JP4681107B2 - Compaction vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rolling compact vehicle used for rolling compaction on a road surface.
[0002]
[Prior art]
In FIG. 10, a Macadam type roller 50 is a type of rolling compaction vehicle having three rolls. A front roll 52 is provided as a pair of front wheels on both sides of a vehicle body 51, and a rear roll 53 of a rear wheel is a vehicle body. It is mounted on a machine frame (frame) 55 connected to 51 via a connecting portion 54.
[0003]
If the asphalt mixture just crushed is rolled with a roll as it is, the asphalt mixture will adhere to the surface of the roll, and this deposit will impair the flatness of the pavement surface. For this reason, the macadam type roller 50 is provided with a watering nozzle 56 for spraying water on the surface of the roll continuously or intermittently during the rolling operation for the purpose of preventing asphalt mixture from adhering. On the rear roll 53 side, a plurality of sprinkling pipes 57 located above the rear roll 53 are attached. A watering tank 58 that communicates with the watering pipe 57 through a hose (not shown) is attached to the front side of the rear roll 53 in the frame 55.
[0004]
In general, asphalt pavement construction is a method in which after asphalt finish material is spread with asphalt finisher, first the road surface is flattened with a Macadam type roller 50 and then the road surface is compacted with a subsequent tire roller 70 at high density. It is taken. In this case, the tire roller 70 also travels while spraying water on the surface of the tire in the same manner as described above, but separately for the purpose of adjusting the moisture content of the roadbed, roadbed, etc. and cooling the road surface. In many cases, a large amount of water is sprayed directly from the rear end of the vehicle body 71 onto the road surface. Therefore, the tire roller 70 is generally formed as a large-capacity watering tank inside the vehicle body 71 as it is, and the tank capacity of the watering tank 58 on the Macadam type roller 50 side is about 650 liters, whereas it is around 5000 liters. It has become a big thing. Further, since the tire roller 70 is equipped with a water supply hose 72 and a water supply pump (not shown), if the water spray tank 58 on the Macadam roller 50 side becomes empty on the way, the rolling operation is performed. It is often interrupted and often receives water from this subsequent tire roller 70.
[0005]
[Problems to be solved by the invention]
In such a case, conventionally, an operator who has operated the Macadam type roller 50 once gets down from the vehicle body 51 to receive the hose 62, climbs on the frame 55 and climbs the water spray tank 58, and reaches the upper surface of the tank. The procedure of supplying water with the hose 62 from the water supply port of No. 1 was taken. In addition, for example, when the watering nozzle 56 is clogged during the rolling operation, the operator stops the vehicle, gets down to the ground once, and uses the frame 55 to make the platform unstable. The water sprinkling nozzle 56 is maintained and replaced by climbing the water sprinkling tank 58 having a different shape.
[0006]
Of course, in such a case, from the viewpoint of work efficiency, it is desirable for the operator to be able to move directly from the driver's seat 59 side to the water spray tank 58 side without getting off the ground. However, in the conventional Macadam type roller 50, as shown in FIG. 11, the pedestal 60 of the driver's seat 59 rising from the floor F (FIG. 10) of the driver's seat is extended along the vehicle width direction. Since the stay 62 for supporting the canopy 61 is attached to the upper surface of the central portion of the pedestal 60 via the support bracket 63, these members become obstacles and are difficult to move to the water spray tank 58 side. there were.
[0007]
In addition, as shown in FIG. 12, when the Macadam type roller 50 is loaded on the loading platform C of the truck T so as to be transported to the construction site, for example, the vehicle body 51 is often loaded to the full width of the loading platform C. When the operator gets down from the driver's seat 59 sideways, he / she cannot get down to the floor of the loading platform C, and gets on the upper edge of the lift plate 81 of the unstable loading platform so that he / she gets down. There was a problem.
[0008]
The present invention has been created to solve the above-described problems, and improves the work efficiency during water supply and maintenance of the watering nozzle, and when loaded on a truck bed, the driver's seat An object of the present invention is to provide a compaction vehicle that improves safety when getting off a car.
[0009]
[Means for Solving the Problems]
  In order to solve the above problems, the present invention includes a pair of left and right driver's seats in the front body, and a rear wheel disposed behind the driver's seat across the water tank in the rear body. In an articulated rolling compaction vehicle with a space above the machine frame that supports the water tank and rear wheel, it is possible to move between the driver's seat floor side and the water spray tank side between the driver's seats. To form a passage facing the watering tankA crossover member was provided across the passage and the watering tank..
[0010]
In addition, the rolling vehicle is provided with a canopy and the canopy struts are disposed between the two driver seats, and the canopy struts are disposed so as to be biased in either the left or right direction from the center position between the driver seats. Thus, the passage was formed.
[0012]
Furthermore, when the crossing member is tilted, it is in a state of being suspended over the passage and the watering tank, and when standing, it is movable so as to block the passage or the space behind the passage where the operator should pass the foot. Configured to formula.
[0013]
In addition, when a detecting means for detecting the state where the crossing member is suspended between the passage and the watering tank is provided, and based on the detection signal of the detecting means, the crossing member is in a state of being suspended across the passage and the watering tank. The brake is applied to the wheel.
[0014]
Moreover, the member for scaffolding provided with the slip prevention means was attached to the upper surface of the watering tank.
[0015]
In the above solution, the compaction vehicle is a roller having a pair of left and right front wheels on the front vehicle body in which the width of the machine frame is smaller than the width of the front vehicle body.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In this embodiment, the compaction vehicle is a Macadam type roller. FIG. 1 is a plan view of the Macadam type roller embodying the present invention (canopy 11 is omitted), FIG. 2 is a side view thereof, and FIG. FIG. 4 is a back side explanatory view showing the main part, FIG. 5 is a cross-sectional explanatory view showing the crossover member 15 (when tilted) and the detection means 21 (the bracket 16 is broken), and FIG. It is side surface explanatory drawing which shows the detection means 21, (a) shows the case where the transition member 15 is stood up, (b) shows the case where it fell. FIG. 7 is a perspective view showing the anti-slip means 20a in the scaffold member 20. FIG. 8 is a hydraulic circuit diagram of the negative brake 22. (The two-wire connection part is a hydraulic piping line, and the one-line connection part is an electric wiring. FIG. 9 is a plan view showing a case where Macadam type rollers are loaded on the truck bed.
[0017]
1 and 2, a Macadam type roller R includes a pair of left and right driver's seats 2a and 2b at the upper rear of a front vehicle body (hereinafter simply referred to as a vehicle body) 1, and left and right sides of the vehicle body 1 as front wheels. A pair of front rolls 3 and 3 are provided. Each outer side surface of the front rolls 3 and 3 is an outer portion of the vehicle body 1 (in this example, indicates an outer portion of Step 5 for climbing to the driver's seats 2a and 2b) so that it can be rolled to the edge of the wall of the structure. It is located outside in the vehicle width direction. The illustrated type is generally called an articulate type, and the vehicle body 1 and the rear vehicle body side are connected by a connecting portion 6. The rear roll 4, which is a rear wheel, has a structure in which it is supported and supported from both sides by a U-shaped yoke-shaped machine frame (hereinafter referred to as a frame) 7 constituting the rear vehicle body. As can be seen from FIG. 1, the rear roll 4 is arranged as a central one-wheel roll so as to have a slight overlap width with the front rolls 3 and 3 so as not to be left behind. Note that the rear roll 4 is not limited to the one-wheel type, and has a structure with an operating mechanism that is divided into left and right in order to suppress dragging of the road surface material during rolling and rolling on a curve. A roll or the like may be used. The width dimension L1 of the frame 7 is smaller than the width dimension of the vehicle body 1 (in this example, the dimension between the outer portions of the left and right steps 5 described above) L2. The steering of the vehicle is performed by operating the steering handle S and turning the vehicle body 1 and the frame 7 with a connecting portion 6 as a support shaft by a hydraulic cylinder (not shown).
[0018]
The water spray tank 8 is attached and supported near the front of the rear roll 4 in the frame 7. As can be seen from FIGS. 1 and 2, the upper space of the frame 7 is open (open) without being blocked so that the upper part of the water spray tank 8 and the upper part of the rear roll 4 are exposed. ing. The watering tank 8 is formed of synthetic resin, and the tank capacity is about 650 liters in this example. On the upper surface of the tank, a pair of water supply ports 8a, 8a with lids into which a water supply hose and the like can be inserted are provided on the left and right sides. Near the upper end of the rear roll 4, a watering pipe 9 communicating with the watering tank 8 via a hose (not shown) is attached to the bracket 9 b and extends in the vehicle width direction so as to follow the surface of the rear roll 4. It is installed. A plurality of water spray nozzles 9a are attached to the water sprinkling pipe 9 at appropriate intervals, and water is sprayed from the water spray nozzle 9a toward the surface of the rear roll 4 in a mist state by operating a water spray pump (not shown) during the rolling operation. Spray to prevent asphalt mixture from adhering to the roll surface. In addition to simple water, the sprinkling tank 8 may contain mineral oil or an asphalt adhesion inhibitor obtained by mixing mineral oil and water using an emulsifier in accordance with working conditions and environmental conditions.
[0019]
In the present invention, a passage 10 that faces the water spray tank 8 is formed between the driver seats 2a and 2b so as to allow the driver seat 2a and 2b to move between the floor F side and the water tank 8 side. It is a characteristic. The Macadam type roller R includes a retractable canopy 11 attached to the upper ends of a pair of front and rear columns (hereinafter referred to as stays) 12. For example, the Macadam type roller R is loaded on a truck bed and conveyed. In some cases, as indicated by phantom lines in FIGS. 2 and 3, the canopy 11 is lowered and stored by tilting the stay 12 forward by operating a lever (not shown).
[0020]
As shown in FIG. 4, the stay 12 is disposed between the driver's seats 2a and 2b. The lower end of the stay 12 pivots on a support bracket 13 fixed to the floor F of the driver's seats 2a and 2b. It is supported. In this embodiment, the passage 10 is formed by arranging the stay 12 (and the support bracket 13) so as to be biased in either the left or right direction with respect to the center position between the driver seats 2a and 2b. FIG. 4 shows a case where the passage 10 is formed closer to the right driver's seat 2a by biasing the stay 12 (and the support bracket 13) leftward (closer to the left driver's seat 2b). Compared with the case where 12 is shifted to the opposite side, the following point is advantageous.
(1) In Japan, vehicles are sometimes left-handed. For example, the driver uses the right driver's seat 2a as the main driver's seat rather than the left driver's seat 2b, except in the case of rolling down the curb at the left side of the vehicle. To do. For this reason, it is more convenient for the driver to go to and from the watering tank 8 when the passage 10 is formed on the side of the driver seat 2a that is frequently used. In particular, when the passage 10 is used after the canopy 11 has been stored, such as when a vehicle is loaded on the truck bed, the operator can easily move from the driver's seat 2a to the passage 10 without the tilted stay 12 becoming an obstacle. ,It is valid.
(2) Since the stay 12 is more distant from the driver's seat and has better visibility for the driver, the left visibility from the driver's seat 2a, which is frequently used, is better.
[0021]
As described above, the passage 10 is sandwiched between the right side surface of the support bracket 13 and the left side surface of the pedestal 14 on which the driver's seat 2a is placed at the lower part and between the right side surface of the stay 12 and the left side part of the driver's seat 2a at the upper part. The rear end of the passage faces the upper surface of the water spray tank 8 as it is. The floor portion of the passage 10 is preferably extended from the floor F of the driver's seats 2a and 2b so as to be flush with each other from the viewpoint of safety and convenience. However, for example, the floor portion of the passage 10 can be positioned slightly above or below the floor F to such an extent that an operator can easily pass without straddling his or her legs. Even if it is a case, it is included in the “passage” in the present invention.
[0022]
Depending on the model of the rolling compaction vehicle, there is a type in which the canopy stays are not arranged between the driver seats, for example, as a set on the outer sides of both driver seats, and in this case, there are no obstacles between the passages. Therefore, there is an advantage that the width of the passage can be increased.
But this type is
(1) Since the stays are arranged close to the outside in the left and right direction of both driver seats, the visibility on the outside in the left and right direction is slightly inferior for the operator seated on the driver seat.
(2) The number of members increases, and the canopy storage mechanism becomes complicated.
In these respects, a rolling vehicle in which stays are arranged between driver seats is advantageous.
[0023]
As described above, if the passage 10 is formed between the driver's seats 2a and 2b so as to allow the driver's seats 2a and 2b to move between the floor F side and the water spray tank 8 side, the stay 12 of the canopy 11 is also provided. In the vehicle disposed between the driver's seats 2a and 2b, by forming the passage 10 by biasing the stay 12 in either the left or right direction from the center position between the driver's seats 2a and 2b, the following is achieved. An effect is produced. That is, when water is supplied from another vehicle such as a tire roller or maintenance of the watering nozzle 9a in the watering pipe 9, the worker in the driver's seat once gets down from the vehicle body 1 to the ground using Step 5 as in the prior art. It is possible to go back and forth between the driver's seats 2a and 2b and the water tank 8 side without going through the troublesome procedure of climbing on the frame 7 and climbing to the water tank 8 again. The construction site has a plurality of workers on the ground, and the water supply hose may be received from the workers on the ground), and the maintenance work efficiency of the watering nozzle and the like is improved.
[0024]
Further, when the width dimension L1 of the frame 7 is smaller than the width dimension L2 of the vehicle body 1 as in the Macadam type roller R of the present embodiment, the vehicle is loaded on the loading platform C of the truck T as shown in FIG. When exiting from the driver's seat 2a (or 2b), the left and right spaces of the frame 7 (in phantom lines) pass through the passage 10 (the transfer member 15 will be described in detail later) and the watering tank 8. In this case, the operator can safely get off the floor of the loading platform C, and the safety of the worker is improved.
[0025]
Reference numeral 20 shown in FIG. 1 denotes a member for scaffolding provided for the purpose of securing the worker's scaffolding on the upper surface of the water spray tank 8, and is provided with anti-slip means 20a. The scaffold member 20 also functions as a reinforcing member for the water spray tank 8 when an operator gets on. As described above, the water spray tank 8 is preferably made of synthetic resin rather than metal from the viewpoint of rust prevention. In this case, for example, it may be possible to integrally form a non-slip such as irregularities on the upper surface of the tank when forming the tank. However, since the non-slip made of a resin material has a high degree of wear, the function as a non-slip may not be maintained in the case of long-term use. Therefore, it is desirable that the scaffold member 20 be made of metal such as a steel plate. As an attachment mode, for example, an insert nut (not shown) formed integrally with the water spray tank 8 is fastened and fixed to the upper surface of the tank by a bolt (not shown). As the non-slip means 20a, a plurality of through holes are formed in the plate surface, and as shown in FIG. 7, a plurality of cuts are made at the edge of the through hole, and the edge is bent upward to project the protrusion. For example. Thus, by attaching the scaffolding member 20 to the upper surface of the water spray tank 8, the safety of the operator on the tank is further improved.
[0026]
A gap is formed between the rear end of the passage 10 and the watering tank 8 so that the vehicle body 1 and the watering tank 8 do not interfere when the vehicle is turned. There is a risk that the operator will accidentally drop his feet in this gap when going back and forth. Therefore, it is desirable to provide a crossover member 15 between the passage 10 and the watering tank 8 so that an operator can safely go back and forth between the passage 10 and the watering tank 8. For example, the transition member 15 can be fixedly provided on the side of the passage 10. However, the frame 7 that pivotally supports the rear roll 4 swings within the range of a predetermined angle around the longitudinal axis with respect to the vehicle body 1 at the site of the connecting portion 6 so as to correspond to a road surface with waviness in the left-right direction. In the case of a fixed connection structure, it is necessary to provide the transition member 15 at a predetermined distance so as not to make dynamic contact with the water spray tank 8 in consideration of the swinging portion. There is a problem that the convenience of going back and forth is slightly lacking. In addition, when the passage 10 is left open when the vehicle is running, the operator slips and falls when the worker comes to the end, or the vehicle is started with an object placed on the passage 10. At that time, there is a risk of the object slipping off.
[0027]
With respect to this problem, in the present invention, when the crossover member 15 is tilted, it is suspended over the passage 10 and the water spray tank 8 (preferably its upper surface), and when it is raised, the passage 10 or the passage 10 is placed. It is configured so as to be movable so that the worker behind the vehicle can block the space through which the foot passes, and is attached to the vehicle body 1 side. As the transition member 15, for example, as shown in FIG. 5, a frame member 15a obtained by bending a steel pipe or the like into a substantially U-shape so as to be slightly smaller than the width of the passage 10, and a steel pipe part facing the frame member 15a. It is set as the structure provided with the several board | plate material 15b suspended as a step. It is safer if an uneven portion 15c is formed on the upper edge of each plate 15b as a slip stopper. And the steel pipe piece 15d centering on the left-right direction is fixed to the both ends of the frame member 15a. On the other hand, a lidless and bottomless box-shaped bracket 16 (see also FIG. 3) having a height that does not interfere with the passage of the worker is fastened and fixed to the floor of the passage 10 with bolts 17. The crossover member 15 is attached to the bracket 16 so as to be rotatable about an axis in the vehicle width direction at a portion of the steel pipe piece 15d.
[0028]
The positioning of the crossover member 15 is performed when the tip of the frame member 15a comes into contact with the front edge of the upper surface of the water spray tank 8 as shown by phantom lines in FIG. Further, as shown in FIG. 5, when it is erected, it is positioned by engaging the engaging portion 18a of the plunger 18 attached to the bracket 16 in the hole 15e drilled in the peripheral surface of the steel pipe piece 15d. In the state, as shown in FIG. 3, the crossover member 15 rises in a slightly inclined manner toward the rear, and the passage 10 and the space through which the foot behind the passage 10 should pass are blocked. In the plunger 18, the engaging portion 18 a is a member that is constantly urged so as to move to the peripheral surface side of the steel pipe piece 15 d, and the operator pulls the lever 18 b of the plunger 18 against the urging force. As a result, the engaging portion 18a is pulled out of the hole 15e, and the crossover member 15 can be turned to the side where it falls down.
[0029]
As described above, the crossover member 15 is suspended over the passage 10 and the water spray tank 8 when it is tilted, and is movable so as to block the passage or the space behind the passage through which an operator should pass his / her foot when standing. If configured as a formula, for example, when the worker defeats the crossover member 15 while the vehicle is stopped, the crossover member 15 is suspended over the passage 10 and the upper surface side of the water spray tank 8 without any gap, and the passage 10 You can go to and from the watering tank 8. In addition, when the vehicle is rolling and running, the crossing member 15 is kept upright to prevent dynamic contact with the water spray tank 8, and it is also possible for the operator to inadvertently approach the water spray tank 8 side. Therefore, there is no risk of the operator or objects falling, and safety is improved.
[0030]
In addition, if the handrail 19 which consists of the member etc. which bent the steel pipe is attached to the crossover member 15, an operator will be able to cross over the crossover member 15 more safely, applying a hand to this handrail 19. Since this handrail 19 is located in the space between the driver's seats 2a and 2b when the crossing member 15 is erected, it can be used as a clue for the operator when moving on the floor F. It is.
[0031]
In the present invention, for the purpose of further improving the safety of the operator, a detecting means 21 for detecting a state in which the crossing member 15 is suspended across the passage 10 and the water spray tank 8 is provided, and based on the detection signal of the detecting means 21. The wheel (the front roll 3 and the rear roll 4) is braked when the crossover member 15 is in a state of being suspended across the passage 10 and the water spray tank 8.
[0032]
In this embodiment, a limit switch 31 is used as the detection means 21. The limit switch 31 is a two-circuit type limit switch that operates when a rod 31a having a roller 31c attached to the tip thereof is tilted by a predetermined angle around an axis 31d. It is attached to a bracket 33 fastened and fixed to the floor by bolts 32. On the other hand, a plate-like detected portion 34 (FIGS. 5 and 6) is formed on the front plate 15b of the transition member 15 so as to correspond to the roller 31c of the limit switch 31. FIG. 6A shows a state in which the cross member 15 is erected, and the detected portion 34 and the roller 31c are in a non-contact state. Then, as shown in FIG. 6 (b), when the crossover member 15 falls and is suspended across the passage 10 and the water spray tank 8, the detected portion 34 comes into contact with the roller 31c and tilts the rod 31a. The limit switch 31 is activated to generate a detection signal.
[0033]
Next, a specific configuration for braking the front roll 3 and the rear roll 4 based on this detection signal will be described below.
Referring to FIG. 8, the Macadam type roller R of this example has a traveling hydraulic pump P driven by a prime mover E, and the traveling rolls P 3 and 3 and the rear roll 4 are respectively provided with the traveling hydraulic pump P. A traveling hydraulic motor M connected to is built in. Each traveling hydraulic motor M is a variable displacement hydraulic motor that operates by receiving supply of pressure oil from the traveling hydraulic pump P, and is controlled by a forward / reverse lever (not shown) around the driver's seat via a control cable or the like. By controlling the discharge amount and flow direction of the pressure oil from the traveling hydraulic pump P, the rotational speed and the rotational direction are changed, and the traveling speed of the vehicle is adjusted and forward / reverse switching is performed. The traveling hydraulic pump P and each traveling hydraulic motor M are connected by a hydraulic hose or the like to form a closed circuit (HST “hydrostatic transmission” circuit) (not shown).
[0034]
Each traveling hydraulic motor M has a built-in negative brake 22. The negative brake 22 is a brake configured to apply a braking force to the output portion of the traveling hydraulic motor M by operating the braking body when the hydraulic pressure is stopped. The structure is not particularly limited, but in this example, the mechanism is a simple and economical wet multi-plate type. When the hydraulic pressure is applied, this negative brake is controlled by the hydraulic pressure acting against the urging force of a spring (not shown) in the negative brake 22 so that the discs 23 serving as braking bodies are not brought into close contact with each other. Although the power is released, when the hydraulic pressure is stopped, the disks 23 are brought into close contact with each other by the urging force of the springs, and the output portion of the traveling hydraulic motor M, that is, the front roll 3 and the rear roll 4 is contacted. It has a structure where braking force is applied.
[0035]
Reference numeral Pc is arranged on the output shaft of the prime mover E in a skewered manner with the traveling hydraulic pump P, and rotates with the rotation of the traveling hydraulic pump P to replenish the above-mentioned closed circuit (HST circuit) with pressure oil corresponding to the leak. Indicates a charge pump. The charge pump Pc also has a function of applying hydraulic pressure to the negative brake 22, and the discharge port of the charge pump Pc is connected to the pressure oil port of each negative brake 22 via pipe lines T1 and T2. Since the charge pump Pc operates in conjunction with the prime mover E, the hydraulic pressure from the charge pump Pc stops when the prime mover E stops, and the braking force is automatically applied to the negative brake 22.
[0036]
In the hydraulic circuit of the negative brake 22 of this example, an electromagnetic switching valve 24 is interposed in the pipe line T1. Electrical signal lines from a foot brake pedal switch 26 and a parking brake switch 27 are connected to the switching valve 24 via a control device 25. The switching valve 24 is normally in a position for guiding the pressure oil from the pipe line T1 to each pipe line T2 in the normal state where the prime mover E is driven, such as when the vehicle is running. Therefore, at this time, it receives the hydraulic pressure from the charge pump Pc. Thus, each negative brake 22 is in a state in which the braking force is released. When the vehicle stop signal from each switch is generated, the switching valve 24 shuts off the pressure oil from the pipe line T1 to the pipe line T2, and the pressure oil in the negative brake 22 passes from the pipe line T2 to the pipe line. Since it switches so that it may flow out to the hydraulic oil tank 28 through T3, the negative brake 22 operates as a service brake or a parking brake.
[0037]
In the present embodiment, the limit switch 31 and the control device 25 are connected, and a detection signal generated from the limit switch 31 is transmitted to the control device 25, so that the switching valve is operated in the same manner as when operating as a service brake or a parking brake. 24, the pipe T1 is cut off, and the pressure oil in the negative brake 22 is switched to escape from the pipe T2 to the hydraulic oil tank 28 via the pipe T3, and the braking force is applied to the front roll 3 and the rear roll 4. This is done.
[0038]
As described above, based on the detection signal of the detection means 21, the brake is applied to the wheels (the front roll 3 and the rear roll 4) when the crossover member 15 is in a state of being suspended across the passage 10 and the water spray tank 8. If so, the following effects are produced.
(1) Even when a worker tries to move to the sprinkling tank 8 side by inadvertently stopping the vehicle in an idling state without applying a parking brake on an inclined road surface such as a slope, Since the wheel is automatically braked in conjunction with the use of 15, the accident that the vehicle suddenly starts is surely prevented, and the safety of the operator on the water spray tank 8 is improved.
(2) Even if the operator inadvertently tries to start the vehicle with the crossing member 15 tilted down, the vehicle does not start because the wheels are braked. Damage to the crossover member 15 due to contact or breakage on the water spray tank 8 side is reliably avoided.
[0039]
Further, in the Macadam type roller R provided with a negative brake 22 as a brake and having a switching valve 24 for switching supply / stop of supply of pressure oil to the negative brake 22 in its hydraulic circuit, this switching valve is detected by a detection signal of the detection means 21. If the negative brake 22 is operated by switching 24, a simple brake configuration can be constructed, resulting in an economical vehicle.
[0040]
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and the design, shape, layout, and the like of each component can be changed as appropriate without departing from the spirit of the present invention.
[0041]
【The invention's effect】
  According to the present invention, the following effects are produced.
(1) If a passage facing the watering tank is formed between the two driver's seats so that the floor of the driver's seat and the watering tank side can be moved, water supply and watering from other vehicles such as tire rollers During the maintenance of the nozzle, the operator can go back and forth between the driver's seat side and the watering tank side, so that the work efficiency of water supply and the maintenance efficiency of the watering nozzle are improved.
  And if a crossover member is provided over a passage and a watering tank, it will come safely.
(2) In a rolling compact vehicle in which a canopy column is disposed between both driver's seats, the column is formed by biasing the column in either the left or right direction from the center position between the driver's seats, thereby The work efficiency of water supply and the maintenance efficiency of the watering nozzle can be improved as well as the effect of).
(3) When the crossover member is tilted, it is in a state of being suspended over the passage and the watering tank, and when standing, it is movable so as to block the passage or the space behind the passage where the operator should pass the foot. With this configuration, by standing the crossover member when the vehicle is running, etc., it is possible to prevent dynamic contact with the watering tank, and it is also possible to reliably avoid situations where the operator slips and falls. , Improve safety.
(4) If a detecting means for detecting the state where the crossover member is suspended across the passage and the water spray tank is provided, and the wheel is braked based on the detection signal of this detection means, the crossover member or the water spray tank may be damaged. It is surely avoided and the safety of the worker is further improved.
(5) If a scaffolding member provided with anti-slip means is attached to the upper surface of the water spray tank, the safety of the operator is improved.
(6) If the rolling vehicle is a roller with a pair of left and right front wheels on the front body, the width of the machine frame is smaller than the width of the front body, and the vehicle has been loaded on the truck bed When getting out of the driver's seat, it is possible to safely get off the floor of the cargo bed in the space on the left and right of the machine frame through the water tank through the passage, improving the safety of the operator.
[Brief description of the drawings]
FIG. 1 is a plan view (canopy omitted) of a Macadam type roller embodying the present invention.
FIG. 2 is a side view of a Macadam type roller embodying the present invention.
FIG. 3 is an explanatory side view showing a main part of the present invention.
FIG. 4 is a rear explanatory view showing a main part of the present invention.
FIG. 5 is an explanatory plan view showing a crossover member (when tilted) and detection means.
FIGS. 6A and 6B are side explanatory views showing a crossover member and detection means, where FIG. 6A shows a case where the crossover member is raised and FIG.
FIG. 7 is a perspective view showing anti-slip means in the scaffold member.
FIG. 8 is a hydraulic circuit diagram of a negative brake (a two-line connection portion indicates a hydraulic piping line, and a single line connection portion indicates an electrical wiring);
FIG. 9 is a plan view showing a case where a Macadam type roller embodying the present invention is loaded on a truck bed.
FIG. 10 is a side view showing a water supply operation mode of a Macadam type roller.
FIG. 11 is a rear explanatory view showing the periphery of the driver seat of the Macadam type roller.
FIG. 12 is a plan view showing a case where conventional Macadam type rollers are loaded on a truck bed.
[Explanation of symbols]
R Macadam type roller
1 body
2a, 2b Driver's seat
3 Front roll (front wheel)
4 Rear roll (rear wheel)
7 Frame (machine frame)
8 Watering tank
9 Sprinkling piping
10 passage
11 Canopy
12 Stay
15 Transition member
20 Scaffolding materials
21 Detection means
22 Negative brake
24 selector valve
31 Limit switch

Claims (6)

A machine for supporting the watering tank and the rear wheel, comprising a driver's seat disposed on the upper part of the front body and a rear wheel disposed at the rear of the driver's seat with the watering tank interposed therebetween. In an articulated rolling compaction vehicle with a space above the frame, a passage that faces the watering tank is formed between both driver's seats so that the driver can move between the floor side of the driver's seat and the watering tank side. ,
A rolling compact vehicle characterized in that a crossover member is provided across the passage and the water spray tank .   A rolling-compact vehicle equipped with a canopy and having a canopy post disposed between both driver seats, wherein the canopy post is disposed in a direction biased to the left or right from the center position between the driver seats. The compaction vehicle according to claim 1, wherein the passage is formed. When the crossover member is tilted, it is suspended over the passage and the watering tank, and when standing, it is movable so as to block the passage or the space behind the passage where the operator should pass the foot when standing. The compaction vehicle according to claim 1 or 2 , wherein the compaction vehicle is configured. A detecting means for detecting a state in which the transition member is suspended between the passage and the watering tank is provided, and the wheel when the transition member is in a state of being suspended between the passage and the watering tank based on the detection signal of the detection means. The compaction vehicle according to claim 3 , wherein the vehicle is braked. The rolling compact vehicle according to any one of claims 1 to 4 , wherein a scaffold member having anti-slip means is attached to an upper surface of the watering tank. Width of the machine frame is smaller than the width of the front body, according to claims 1, characterized in that a roller having a pair of left and right front wheels to the front vehicle body any one of claims 5 Rolling compaction vehicle.

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