JP2011105085A - Vibratory roller vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibratory roller vehicle that secures visibility from an operator's room by a simple structure and exhausts heat in an engine cover while protecting an engine from rainwater and dust. <P>SOLUTION: The vibratory roller vehicle includes: a vehicle body (4) having an operator's room; a vibratory drum (6) also serving as the front wheel of the vehicle body; an engine (14) provided on the vehicle body (4); an openable/closable engine cover (26) for covering the engine (14); a tank device (18) provided in the vehicle body (4) and located outside the engine cover (26) so as to store a hydraulic fluid and fuel; and each recess (30) secured between the vehicle body (4) and the tank device (18), located at the lower side of the engine cover (26), and opened in three directions of the upper, lateral, and rear directions. When the engine cover (26) is in a closed state, each recess (30) is partially covered with the engine cover (26) only from above so as to provide an outlet (36) in the engine cover (26). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vibration roller vehicle, and more particularly, to a vibration roller vehicle that achieves both visibility during traveling and maintainability of equipment such as an engine.

  This type of vibrating roller vehicle has a vibrating drum that also serves as a wheel at either the front or the rear of the vehicle body, and moves forward or backward while vibrating the vibrating drum to perform a compaction operation on the ground. It has become.

Such a vibration roller vehicle includes an engine mounted on the front or rear of a vehicle body, and the engine is covered with an engine cover that can be opened and closed together with other hydraulic devices.
Generally, a cylindrical exhaust duct is provided in the engine cover, and the exhaust duct discharges heat in the engine cover to the outside to prevent overheating in the engine cover (Patent Document 1).

JP 2004-244950 A

  By the way, since the exhaust duct projects vertically from the upper surface of the engine cover, the exhaust duct has a front or rear view from the driver's seat when the vibration roller vehicle travels forward or backward. Narrowing and increasing the blind spot area from the driver's seat provides a sufficiently wide view for the driver, that is, a great obstacle to ensuring visibility from the driver's seat.

  On the other hand, if a plurality of exhaust ports are provided on the upper surface or side surface of the engine cover in place of the exhaust duct, these exhaust ports do not increase the blind spot area. Rain water and dust may enter and cause a failure of an onboard device such as an engine, and the maintainability is deteriorated.

  The present invention has been made based on the above-mentioned circumstances, and the purpose of the present invention is to ensure good visibility from the driver's seat with a simple structure when exhausting heat from inside the engine cover, and Provided is a vibration roller vehicle capable of simultaneously ensuring the maintainability of a mounted device such as an engine.

  In order to achieve the above-described object, the vibration roller vehicle according to the present invention includes a vehicle body having a driver's cab or a driver's seat and wheels provided respectively at the front and rear portions of the vehicle body, and each of the front and rear portions. A wheel on one side also serves as a vibration drum, an engine provided on the vehicle body, and an engine cover that can be opened and closed to cover the engine. An engine cover and a tank device that is disposed on the vehicle body outside the engine cover and stores fuel for the engine and hydraulic fluid for hydraulic equipment, and using the outer surface of at least one of the vehicle body and the tank device, A recess secured at the bottom and open at least upward and horizontally, and when the engine cover is closed, the upper opening of the recess covers at least partially the engine cover. And further comprising a downward discharge port provided in the engine cover by being.

Since the air flow in the engine cover is exhausted to the outside of the engine cover through the exhaust port, the heat generated by the operation of the engine or the like is also sent to the rear of the engine cover together with the air flow, and is exhausted from the exhaust port. Be heated. Therefore, for such exhaust heat, it is not necessary to provide an opening on the upper surface or side surface of the engine cover, the rear dead angle from the cab can be reduced, and the rear view from the cab is ensured satisfactorily.
Moreover, since the discharge port is opened downward, the discharge port greatly reduces the entry of rainwater, dust and the like into the engine cover, and is excellent in terms of vehicle maintainability.

  According to the vibration roller vehicle of the second aspect, the recess may be secured between the vehicle body and the tank device.

According to the vibration roller vehicle of claim 3, since the bottom surface of the recess is formed and the bottom surface is formed as a mesh platform, the bottom surface of the engine cover and the bottom surface of the recess, that is, the platform clearance is small. However, the exhaust heat passes through the platform with the air flow, and the exhaust heat does not accumulate in the recess.
In addition, the step can be used as a step when the inspection operator opens the engine cover and inspects the engine, etc., and the inspection operation of the engine etc. can be easily performed, and the vehicle has excellent maintainability. It becomes.

  According to the vibration roller vehicle of the fourth aspect, since the fan that takes air into the engine cover is disposed in the vicinity of the engine, the air in the engine cover is sent out of the engine cover well.

  The vibration roller vehicle according to any one of claims 1 to 4 has a simple structure and ensures good visibility from the driver's seat while exhausting heat from the inside of the engine cover, and also has maintainability of equipment such as an engine. It can be secured at the same time.

1 is a side view of a vibrating roller vehicle as a first embodiment of the present invention. It is the figure which showed the flow of the air in an engine cover. FIG. 2 is an enlarged perspective view of a rear portion of the vehicle viewed from the direction of arrow A in FIG. It is a side view of a vibration roller vehicle. It is the schematic when an operator gets on the vehicle upper part. It is an expansion perspective view of the vehicle rear part of 2nd Example. It is an expansion perspective view of the vehicle rear part of 3rd Example. It is an expansion perspective view of the vehicle rear part of 4th Example.

A first embodiment of a vibration roller vehicle according to the present invention will be described below with reference to the drawings.
A vibration roller vehicle 1 shown in FIG. 1 includes a vehicle body composed of a front frame 2 and a rear frame 4. The rear frame 4 has a pair of left and right rear wheels 8 at the rear end thereof, while the front frame 2 also serves as a front wheel. A vibration drum 6 is provided, and the vibration drum 6 is rotatably supported by the front frame 2. The front and rear frames 2 and 4 are connected to each other by a joint method via a steering link 10.

  A driver's cab 12 is provided on the upper portion of the rear frame 4, and the driver's cab 12 has a driver's seat and a steering handle (not shown). The frame 4 is rotated via the steering link 10 and its steering is controlled.

  The vibration drum 6 includes a vibration mechanism (not shown). Specifically, the vibration mechanism has a rotation shaft different from the drum shaft in the vibration drum 6 and a weight attached eccentrically to the rotation shaft, and receives the rotation of the rotation shaft. Is to vibrate.

  An engine 14 is disposed behind the cab 12, that is, on the rear end of the rear frame 4, and a tank device 18 is disposed at the rear end of the rear frame 4. It consists of an oil tank.

  A hydraulic pump 16 is disposed on the rear side of the engine 14. The hydraulic pump 16 is driven by the engine 14 and supplies hydraulic oil sucked up from the tank device 18, that is, the hydraulic oil tank toward a hydraulic device such as a hydraulic motor that rotates the rotating shafts of the rear wheels 8 and the vibration drum 6. Supply. The tank device 18 also includes a fuel tank, and the fuel tank stores the fuel of the engine 14.

  On the other hand, an oil cooler 20, a radiator 22, and a fan 24 are sequentially provided from the cab 12 side as a cooling device in front of the engine 14. The fan 24 is driven by the engine 14 to generate a flow of air from the driver's seat 12 side through the oil cooler 20, the radiator 22 and the engine 14 toward the rear of the vehicle 1, and the oil cooler 20 and the radiator 22 Heat exchange takes place between the flowing hydraulic oil and coolant and air.

  The engine 14, the hydraulic pump 16, the oil cooler 20, the radiator 22, and the like described above are covered with an engine cover 26, and the engine cover 26 can be opened and closed via a hinge 28 on a front mounting frame 27. Installed. The upper surface of the engine cover 26 is inclined downward toward the rear of the vehicle, and the height of the engine cover 26 is lowered toward the rear of the vibration roller vehicle 1.

  As shown by the arrows in FIG. 2, when the fan 24 described above is driven, air is guided into the gap between the cab 12 and the mounting frame base 27 from the left and right sides of the vehicle. The air passes through the base 27 and is taken into the engine cover 26, whereby the air flow described above is generated in the engine cover 26.

FIG. 3 shows rear ends of the rear frame 4 and the engine cover 26.
At the rear end portion of the rear frame 4, recesses 30 are secured on both the left and right sides of the tank device 18, and these recesses 30 are opened upward, rearward, and sideward of the vehicle, respectively. Specifically, each recess 30 is defined by a horizontal plane 32 and vertical planes 34l and 34w formed by a part of the rear end surface of the rear frame 4 and a part of the outer wall of the tank device 18, and the vertical plane 34l is a vibrating roller. The vertical surface 34 w is parallel to the longitudinal direction of the vehicle 1, and is parallel to the width direction of the vibration roller vehicle 1.

As apparent from FIG. 3, the horizontal surface 32 is at a lower height than the upper surface of the rear frame 4 to form a platform, and the platform 32 has a mesh structure.
Further, when the engine cover 26 is in a closed state, the rear end edge of the engine cover 26 is supported on the upper surface of the tank device 18, and both corners of the rear end edge overhang with respect to the corresponding recess 30. ing. Specifically, the opening edge 26i on the lower surface of the engine cover 26 protrudes from the vertical surfaces 34l and 34w to the side and rear of the vibration roller vehicle 1 at portions corresponding to the two corners. Such a projecting portion cooperates with the recess 30 to form a discharge port 36, and this discharge port 36 opens downward, that is, toward the step platform 32.

  Therefore, as indicated by the arrows in FIG. 4, the above-described air flow in the engine cover 26 is exhausted to the outside of the engine cover 26 through the exhaust port 36, so that the heat generated with the operation of the engine 14 and the like is generated. Is sent to the rear of the engine cover 26 together with the air flow, and is exhausted from the exhaust port 36. Therefore, it is not necessary to provide an opening on the upper surface or side surface of the engine cover 26 for such exhaust heat. As described above, the engine cover 26 has a shape whose height decreases toward the rear, so that the rear dead angle from the cab 12 can be reduced, and the rear view from the cab 12 is ensured satisfactorily. Is done.

Further, since the discharge port 36 is opened downward, the discharge port 36 greatly reduces the entry of rainwater, dust, and the like into the engine cover 26, and is excellent in terms of vehicle maintainability.
Further, since the above-described step 32 has a mesh structure, even if the clearance between the lower surface of the engine cover 26 and the step 32 is small, the exhaust heat passes through the step 32 together with the air flow and is exhausted into the recess 30. Will not accumulate.

  Furthermore, as shown in FIG. 5, the step platform 32 can be used as a step when an inspection operator opens the engine cover 26 and inspects the engine 14 and the like, thereby facilitating the inspection operation of the engine 14 and the like. This can be performed and the vehicle is excellent in maintainability. In FIG. 5, reference numeral 38 denotes a gas cylinder that holds the engine cover 26 in the open position.

  The description of one embodiment of the present invention is finished above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the embodiment of the present invention.

  For example, as shown in FIG. 6, the recesses 30 may be provided not in the rear end portion of the rear frame 4 but in the intermediate regions on the left and right side surfaces of the rear frame 4. Open only to the side. Specifically, in this case, the tank device 18 has a width substantially equal to the entire width of the rear frame 4, and two vertical surfaces of the three vertical surfaces that define the recess 30 are formed by the rear frame 4, and the rest One vertical plane is formed by the tank device 18. When the engine cover 26 is in a closed state, the opening edge 26 i of the engine cover 26 has a portion that crosses the recess 30, and this crossing portion cooperates with the recess 30 to form a downward discharge port 36. Form.

  Further, as shown in FIG. 7, the recess 30 may be provided in an intermediate region of the rear end surface of the rear frame 4 and open only above and behind the vehicle. In this case, the tank device 18 has a divided structure in which the hydraulic oil tank and the fuel tank are separately arranged on the left and right of the rear frame 4, and one vertical surface 34 w of the vertical surfaces partitioning the three sides of the recess 30 is It is formed by the rear frame 4, and the remaining two vertical surfaces are formed by a split tank device 18. When the engine cover 26 is in the closed state, the rear end portion of the engine cover 26 is supported by the split tank device 18 only at both corners, and a part of the opening edge 26 i of the engine cover 26, that is, the engine cover 26. The rear edge extends across the recess 30 and cooperates with the recess 30 to form a downward outlet 36.

  Further, as shown in FIG. 8, when the tank device 18 has a width equal to the entire width of the rear frame 4, the recess 30 may be opened to the rear and left and right, leaving only the front. Good. In this case, the recess 30 has a step 32 protruding to the rear of the tank device 18, and the rear end portion of the engine cover 26 in the closed state protrudes from the tank device 18 above the step 32, A downward discharge port 36 is formed.

6 to 8 can also discharge the heat in the engine cover 26 together with the air flow, as indicated by the arrows in the corresponding drawings.
The recess 30 shown in FIGS. 2 and 6 may be provided only on either the left or right side of the rear frame 4.

1 Vibrating roller vehicle 2 Front frame (body)
4 Rear frame (car body)
6 Vibrating drum (wheel)
8 Rear tire (wheel)
DESCRIPTION OF SYMBOLS 10 Steering link 12 Driver's seat 14 Engine 16 Pump 18 Tank apparatus 20 Oil cooler 22 Radiator 24 Fan 26 Engine cover 26i Inner peripheral edge 27 Mounting frame base 28 Hinge 30 Recess 32 Step base 34l, 34w Vertical surface 36 Exhaust port 38 Gas cylinder

Claims (4)

A vehicle body having a cab or driver seat;
Wheels provided respectively at the front and rear of the vehicle body, wherein the wheel on either side of the front or rear also serves as a vibration drum; and
An engine provided on the vehicle body;
An engine cover that can be opened and closed to cover the engine, the engine cover having an open bottom surface and capable of taking air into the interior;
A vibration roller vehicle that is disposed on the vehicle body outside the engine cover and includes a tank device that stores fuel for the engine and hydraulic oil for hydraulic equipment,
A recess that is secured on the lower side of the engine cover using at least one outer surface of the vehicle body and the tank device, and that opens at least upward and horizontally;
The engine cover further includes a downward discharge port provided to the engine cover by at least partially covering an upper opening of the recess when the engine cover is in a closed state. Vibration roller vehicle.   The vibrating roller vehicle according to claim 1, wherein the recess is secured between the vehicle body and the tank device.   The vibrating roller vehicle according to claim 1, wherein the vehicle has a bottom surface of the recess, and the bottom surface is formed as a step having a mesh structure.   The vibration roller vehicle according to any one of claims 1 to 3, wherein a fan that takes air into the engine cover is disposed at a position near the engine.

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