JP2021080666A - Rolling compaction vehicle - Google Patents

Abstract

To provide a rolling compaction vehicle which allows quickly and easily grasping a state of the vehicle based on the display of instruments provided on an instrument panel as well as the quick and easy operation of switches.SOLUTION: A steering wheel 12 and an instrument panel 10 are provided on the front side of a driver seat 8. A liquid crystal display 23 and a warning lamp 24 are provided as instruments 20 on the instrument panel 10. A hazard switch 28, a work light switch 29, a parking switch 30, and a Hi/Lo selector switch 31 are arranged side by side as traveling system switches 21 on the right side of the instruments 20. A vibration switch 33, a solvent switch 34, and a spray mode selection switch 35 are arranged side by side as work system switches 22 on the left side. All of the instruments 20, the traveling system switches 21 and the work system switches 22 are arranged in an area on the instrument panel 10 which is visible, through the inside of a rim 12c, to an operator seated in the driver seat 8.SELECTED DRAWING: Figure 2

Description

The present invention relates to a compaction vehicle.

In this type of compaction vehicle, a steering and instrument panel is provided in front of the driver's seat, and on the instrument panel, instruments that display the vehicle status, and vehicle running operations and compaction work operations are performed. Various switches are provided for this purpose. The operator seated in the driver's seat steers the steering wheel to adjust the course of the vehicle, and operates the forward / backward levers located on the left and right sides of the steering wheel to move the vehicle forward or backward, thereby serving as a traveling wheel. The road surface is compacted by the compaction wheel. During this compaction work, the operator grasps the state of the vehicle, such as the engine cooling water temperature and the remaining amount of fuel, based on the display of the instruments, and also operates the switches necessary for the running and compaction work of the vehicle, for example, the running speed. Hi / Lo switching, hazard lamp ON / OFF, watering mode selection, vibration device ON / OFF, etc. are performed (see, for example, Patent Document 1).

FIG. 5 is a diagram showing a steering and instrument panel seen from an operator seated in the driver's seat in a conventional compaction vehicle, and based on this diagram, an arrangement state of instruments and switches of each type on the instrument panel will be described. To do.

This conventional compaction vehicle is a combined vibration roller 101 in which a front vehicle body 4 and a rear vehicle body 5 are connected via an articulating mechanism, and a driver's seat (not shown) is provided on the rear vehicle body 5 at a position on the front side thereof. A steering wheel 12 and an instrument panel 102 are provided on an erected 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-right direction, and running operations and rolling operations of the vibrating rollers 101 are performed on both left and right sides of them. A plurality of switches 106 for this purpose are provided.

Japanese Unexamined Patent Publication No. 2018-134941

The operator during the compaction work operates the steering wheel 12 and the forward / backward lever 13 quickly and accurately in order to drive the compacted vehicle exactly along a predetermined traveling path such as a fence or a curb. At the same time, it is also necessary to keep track of the position in order to prevent contact with workers working in the surrounding area.

As described above, the driving operation of the vibrating roller 101 during the compaction work requires a high concentration force unlike the driving operation of a passenger car or the like that only keeps a rough traveling lane. Further, the operator during the compaction work needs to visually check the instruments 103 to grasp the state of the vibrating roller 101, and operate each switch 106 for the traveling and rolling work of the vibrating roller 101. However, the time that can be devoted to visually recognizing these instruments 103 and operating the switches 106 is limited to a very short time so that the important vehicle course and attention to the surroundings are not neglected.

The instrument panel 102 of the conventional vibrating roller 101 has room for improvement in response to the above-mentioned circumstances peculiar to the compaction vehicle.
That is, as shown in FIG. 5, a steering wheel 12 is interposed between the operator seated in the driver's seat and the instrument panel 102, and a part of the instruments 103 and the switches 106 is blocked by the rim 12c. .. Therefore, in order to visually recognize the instruments 103 and the switches 106, the operator needs to tilt his / her head or body to shift the viewpoint. Therefore, 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 is prolonged. Such a tendency makes the operation of the vibrating roller 101, which is important, and attention to the surroundings distracted, and also causes unnecessary fatigue of the operator, so that there is room for improvement.

The present invention has been made to solve such a problem, and the purpose of the present invention is to quickly and easily grasp the state of the vehicle based on the display of the instruments provided on the instrument panel. Another object of the present invention is to provide a compaction vehicle capable of quickly and easily operating switches provided on an instrument panel.

In order to achieve the above object, the compaction vehicle of the present invention is provided with a steering and instrument panel at a position in front of the driver's seat, and instruments for displaying the state of the vehicle on the instrument panel and traveling on the vehicle. In a compaction vehicle provided with a plurality of traveling system switches to be operated and a plurality of working system switches to operate the compaction work, an operator seated in the driver's seat in front of the steering wheel is inside the rim of the steering wheel. The instrument panel, the traveling system switches, and the working system switches are arranged in a region on the instrument panel that can be visually recognized via the above.

According to the compaction vehicle of the present invention, the state 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 grasped. It can be easily operated.

It is a side view which shows the combined vibrating roller of embodiment. It is a figure which shows the steering and instrument panel seen from the operator seated in the driver's seat. It is the A arrow view of FIG. 2 which shows the positional relationship between a steering wheel and an instrument panel. It is a figure corresponding to FIG. 3 which shows another example which used the toggle switch as a traveling system switch. It is a figure which shows the steering and instrument panel seen from the operator seated in the driver's seat in the conventional compaction vehicle.

Hereinafter, an embodiment in which the present invention is embodied in a combined vibrating roller will be described.
FIG. 1 is a side view showing the combined vibrating roller of the present embodiment, and in the following description, the front-rear direction and the left-right direction are expressed with reference to the vehicle.

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

The front compaction wheel 2 is composed of a metal drum having a length substantially corresponding to the vehicle width, 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 compaction wheel 3 is composed of a total of four rubber tires, two on each side, and is rotatably supported by axles (not shown) provided at the center on the left and right sides of the rear vehicle body 5. These front and rear compaction wheels 2 and 3 are driven by a traveling hydraulic motor (not shown), and the vehicle 1 travels while compacting the road surface by the respective compaction wheels 2 and 3.

FIG. 2 is a diagram showing a steering wheel 12 and an 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 diagonally upward and rearward is formed on the upper portion of the driver's cab 9, and a two-spoke type 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 the boss 12a supported by the steering shaft 11, and the ring-shaped rim 12c is supported at an angle parallel to the instrument panel 10 via these spokes 12b.
In the compaction work, the operator sits on the driver's seat 8 and operates the forward / backward levers 13 provided on the left and right of the steering wheel 12 and the driver's cab 9, the pedals 14 at his feet, and the like. In response to these operations, the steering cylinder and the hydraulic motor are operated to steer and run the vehicle 1.

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

A hazard lamp 17 and a work light 18 are provided at the rear part of the rear vehicle body 5. For example, the hazard lamp 17 blinks to call attention to the surroundings during work, and the work light 18 is the head of the front part during night work. It is designed to light up with the light.

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

The instrument panel 10 has a horizontally long square shape, and is provided with instruments 20 for displaying the state of the vehicle 1 and various switches 21 and 22. The switches 21 and 22 are 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 rolling compaction work (hereinafter, working system switches). It is roughly classified into (referred to as Class 22), and in this embodiment, it is collectively arranged at different positions on the instrument panel 10 from the viewpoint of operability.

Specifically, a liquid crystal display 23 and a large number of warning lamps 24 are provided as instruments 20 in the center of the instrument panel 10 in the left-right direction. The liquid crystal display 23 displays the engine cooling water temperature, the engine speed, the remaining fuel amount, the operating state of the traveling system and the working system switches 22, and the like. Further, the warning lamps 24 provided on the left and right sides of the liquid crystal display 23 are lit and displayed when, for example, an abnormal rise in the engine cooling water temperature or a shortage of the remaining fuel amount occurs.

Traveling switches 21 are arranged on the right side of the instruments 20 on the instrument panel 10, and working switches 22 are arranged on the left side of the instruments 20. Details will be described later. Further, on the lower side of the work system switches 22 on the instrument panel 10, a switch hole 25 into which switches of an optional device (not shown) can be installed is provided, and is concealed by a removable cover 26. There is.

In this embodiment, a compaction meter range changeover switch, a back buzzer forced OFF switch, and a sprinkler timer are set as options. The range changeover switch is a switch for switching the display range of the graph of the degree of compaction of the road surface 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 the optional equipment is mounted on the vehicle 1 according to the purchaser's request, the cover 26 is removed from the switch hole 25 corresponding to the optional equipment, and the switches are installed.

Then, in the present embodiment, as shown in FIG. 2, all of these instruments 20, traveling system and working system switches 21 and 22 (including the switches when optional equipment is provided) are steering. It is visible through the inside of the 12 rims 12c. Specifically, when the operator sits in the center of the bench-type driver's seat 8 (in other words, in front of the steering wheel 12), the instrument becomes visible through the inside of the rim 12c corresponding to the upper side of the spokes 12b of the steering wheel 12. In the area on the ment panel 10, all of the instruments 20, the traveling system and working system switches 21 and 22, and the switch holes 25 of the optional equipment are arranged.

Therefore, the operator is unobstructed by the rim 12c of the steering wheel 12 (in other words, without tilting his head or body for visual recognition to shift his viewpoint), including the instruments 20 and optional equipment. The switches 21 and 22 can be visually recognized. As a result, the state of the vehicle 1 can be quickly and easily grasped based on the display of the instruments 20 without disregarding the important driving operation of the vehicle 1 and the attention to the surrounding workers, and the desired switches. 21 and 22 can be operated quickly and easily, and unnecessary fatigue of the operator due to this can be prevented.

Next, the details of the switches 21 and 22 on the instrument panel 10 will be described.
In the present embodiment, as the traveling system switches 21, from the upper stage, the hazard switch 28 for turning on / off the hazard lamp 17, the working light switch 29 for turning on / off the work light, the parking switch 30 for turning on / off the parking brake, and the traveling Hi / Lo changeover switches 31 for switching the speed are arranged side by side. Such arrangement of each switch 28 to 31 is provided in the upper row of the switches 28 to 31 having a higher operation frequency in view of the fact that the upper row on the instrument panel 10 is easier 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 rocker switches of the same type. When the ON operation surfaces 28a to 30a are pressed, the device to be operated is operated, and when the OFF operation surfaces 28b to 30b are pressed, the operation is performed. The target device is stopped. 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, and both operation surfaces 28a to 30a and 28b to 30b arranged in the left-right direction. It is installed. As a result, the switches 28 to 31 are arranged side by side in the vertical direction in the same posture in which the ON operation surfaces 28a to 30a are located on the rim 12c side of the steering wheel 12.

When operating these switches 28 to 31, as shown in FIG. 3, the operator brings the fingertip of the right hand closer to the desired switches 28 to 31 from the right side, so that the closer ON operation surfaces 28a to 30a are turned off. The pressing operation can be performed more easily than the operation surfaces 28b to 30b. Since the ON operation of each switch 28 to 31 needs to be executed without delay according to the progress of the work, the priority is higher than the OFF operation, and by arranging both operation surfaces 28a to 30a and 28b to 30b in response to this request. A quick ON operation is possible.

In addition, 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 providing a large gap between them, and as a result, the instrument panels of the three switches 28 to 31 are arranged side by side. The occupied area on 10 can be reduced. There is a limit to the area that can be seen on the instrument panel 10 through the inside of the rim 12c of the steering wheel 12, and within that area, the instruments 20, traveling system and work system switches 21 and 22, and optional equipment It is desirable to provide all of the switch holes 25. Due to the reduction in the occupied area of the three switches 28 to 31, there is a margin in the space on the instrument panel 10, and other switches and the like can be arranged at 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 anti-rim 12c side. For this reason, ON / OFF operation can be performed with a common operation feeling, which enables quicker switch operation and greatly contributes to prevention of erroneous operation.

As shown in FIG. 4, the toggle switches 28 to 30 may be used instead of the rocker switch. 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 side (anti-rim 12c side) in the left-right direction and turned off when the tilting operation is performed to the right side (rim 12c side). Since it is easier to tilt to the left, this side is set as a high-priority ON operation.

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 of high speed and low speed according to the rotation operation. On the surface of the Hi / Lo changeover switch 31, an operation protrusion 31a forming a linear shape in the left-right direction is integrally formed. Similar to the operation of the hazard switch 28 and the like, the operator brings the fingertip of the right hand closer to the Hi / Lo changeover switch 31 from the right side, and the part on the right side of the operation protrusion 31a (corresponding to the operation part for the rotation operation, and is as follows. In the explanation, this portion is also referred to as an operation unit 31b), and the fingertip can be easily pressed against the operation unit 31b).

The operation unit 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 operation unit 31b, it is converted into a rotational force centered on the axis C, and the Hi / Lo selector switch 31 can be rotationally operated. The traveling speed of the vehicle 1 can be easily and quickly switched.

Further, when operating the switch, the hand is released from the rim 12c of the steering 12 and moved to the Hi / Lo changeover switch 31, but since the fingertip can be pressed against the operation unit 31b to perform the rotation operation as described above, for example, an operation protrusion. The movement distance of the hand is shorter than when the entire 31a is pinched and rotated, and this factor also greatly contributes to easy and quick switch operation.

Further, in the present embodiment, as the work system switches 22, vibration that switches the vibration device (not shown) built in the front compaction wheel 2 between two positions of MANUAL (manual operation) and AUTO (interlocked with running) from the upper stage. A switch 33, a solvent switch 34 for spraying the solvent from the solvent spray nozzle, and a watering mode selection switch 35 for selecting the watering mode by the compaction wheel watering nozzles 16f and 16r are arranged side by side. The working switches 22 are also arranged in the upper stages of the switches 33 to 35, which are frequently operated.

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

The solvent switch 34 is configured as a push switch. Since the spraying of the solvent on the rear compaction wheel 3 is very short, a push switch that can finely adjust the spraying time according to the pressing operation is adopted.

The watering mode selection switch 35 is configured as a rotary switch, and the watering mode can be switched between three positions of OFF, ON, and AUTO (interlocked with traveling) according to the rotation operation. On the surface of the watering mode selection switch 35, an operation protrusion 35a forming a linear shape in the left-right direction is integrally formed, and a portion on the left side thereof functions as an operation portion 35b. As shown in FIG. 3, the operator can bring the fingertip of the left hand close to the watering mode selection switch 35 from the left and easily press it against the operation unit 35b to perform a rotation operation, and the movement distance of the hand at that time is short. In addition, the watering mode can be switched easily and quickly.

As described above, the traveling switch 21 is arranged in the space on the right side of the instrument panel 10 sandwiching the instrument 20, and the working switch 22 is arranged in the space on the left side of the instrument 20. ing. When the traveling system switches 21 and the working system switches 22 are mixed, it takes time to search for the desired switches, and inevitably, the time required to complete the switch operation is prolonged. ..

On the other hand, in the present embodiment, the traveling system and the working system switches 21 and 22 are collectively arranged at different positions. Therefore, the operator pays attention to the side of the traveling system switches 21 when operating the traveling of the vehicle 1, and pays attention to the side of the working system switches 22 when operating the rolling compaction work, and reduces the traveling system. Alternatively, the switch operation can be completed more quickly by searching for a desired switch from the working switches 21 and 22.

In addition, as shown in FIG. 2, the traveling system and working system switches 21 and 22 are arranged side by side along the arc shape of the rim 12c of the steering wheel 12, respectively. As a result, the switches 21 and 22 are arranged at a position approximately the shortest distance from the rim 12c, and the hand holding the rim 12c for steering is released to reach the desired switches 21 and 22 at almost the shortest distance. You can move your hand to operate it. Therefore, the switches can be switched more easily and quickly.

In the example of FIG. 3, since the instrument panel 10 and the steering wheel 12 are separated from each other, it was necessary to release the hand from the rim 12c to operate the switch, but the instrument panel 10 and the steering wheel 12 are closer to each other. If this is the case, the switch can be operated with the index finger, for example, with the thumb resting on the rim 12c. As a result of being arranged side by side along the arc 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 is hung as a clue, it is possible to find and operate the desired switches 21 and 22 with one finger without visually recognizing them.

Although the description of the embodiment is completed above, the aspect of the present invention is not limited to this embodiment. For example, in the above embodiment, the combined vibrating roller 1 provided with the articulating mechanism 6 is embodied, but the present invention is not limited to this, and may be applied to other compaction 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 Traveling switches 22 Working switches 25 Switch holes 26 Cover 28 Hazard switches (rocker switches)
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 unit

Claims (7)

A steering wheel and an instrument panel are provided in front of the driver's seat to operate instruments that display the state of the vehicle on the instrument panel, a plurality of traveling system switches that operate the vehicle, and compaction work. In a compaction vehicle equipped with multiple work system switches
The instruments, the traveling switches, and the working switches are located in an area on the instrument panel that is visible to the operator seated in the driver's seat in front of the steering through the inside of the rim of the steering. A compaction vehicle characterized by being arranged. The plurality of traveling system switches are arranged in any one of the spaces on the left and right sides of the instrument panel sandwiching the instruments.
The compaction vehicle according to claim 1, wherein the plurality of work system switches are arranged in any one of the spaces on both the left and right sides of the instruments. The compaction vehicle according to claim 2, wherein the plurality of traveling system switches and the plurality of working system switches are arranged side by side along the arc shape of the rim of the steering wheel, respectively. Any of the plurality of traveling system switches or the plurality of working system switches is configured as a rocker switch having an ON operation surface for operating the operation target device and an OFF operation surface for stopping the operation target device. 1. The instrument panel is arranged with the ON operation surface as the rim side of the steering wheel and the ON operation surface and the OFF operation surface arranged in the left-right direction. The compaction vehicle described in. Either of the plurality of traveling system switches or the plurality of working system switches is configured as a rotary switch that switches the operating state of the device to be operated according to the rotation operation, and the operation unit for the rotation operation is rotated. The compaction vehicle according to claim 1, wherein the rolling vehicle is provided on the rim side of the steering wheel with respect to the center of the steering wheel. The compaction vehicle according to claim 2, wherein switches of the same type are arranged side by side in the same posture as the plurality of traveling system switches or the plurality of working system switches. A switch hole in which optional switches can be installed is provided in an area on the instrument panel that is visible to the operator through the inside of the steering rim and is concealed by a removable cover. The compaction vehicle according to claim 1.

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