JP2000290920A - Road roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cover spaces formed between a frame and a floor plate composing a front car body and front rolling rollers. SOLUTION: A road roller is formed in such a constitution that right and left overhung parts 42, 42 for covering upper sides of right and left front rolling rollers 6 are integratedly formed on an upper surface cover provided on an upper end side of a frame 33, so that a space (a) formed between a side surface plate 34 of the frame 33 and an internal side of the front rolling rollers 6 is covered with one of the overhung parts 42, and a space b formed between a front end part of an overhung floor part 39B of a floor plate 39 and a surface of the front rolling rollers 69 is covered with the other overhung part 42 when an upper surface cover 41 is set to a closing position. Thereby, when an operator performs start-up inspection work on the front rolling rollers 6, it is possible to surely prevent being pinched a tiptoe, etc., in the space (a) or the space (b) even if a foot is slid on the front rolling rollers 6, so that the start-up inspection work can be safely performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road roller suitably used for pavement work for compacting a pavement material such as gravel or asphalt spread on a road surface or the like.

[0002]

2. Description of the Related Art Generally, a road roller such as a drum roller, a tire roller, a macadam roller or the like is used when performing a pavement work on a road surface or the like. A method is employed in which a pavement material is compacted by running a road roller.

[0003] A conventional prior art road roller will be described with reference to FIGS.

In the figure, reference numeral 1 denotes a road roller body.
The vehicle body 1 includes a front vehicle body 2 and a rear vehicle body 4 connected to the front vehicle body 2 via a connecting device 3. A steering cylinder 5 is provided between the front vehicle body 2 and the rear vehicle body 4 so as to swing the rear vehicle body 4 leftward and rightward with respect to the front vehicle body 2 around the coupling device 3. .

[0005] Reference numerals 6 and 6 denote left and right front-side compaction rollers rotatably provided on the front body 2, respectively.
Is made of, for example, a metal drum, and has a configuration in which the weight can be adjusted by sealing water or the like inside. The left and right front side pressure rollers 6 are driven to rotate by a hydraulic motor 12 described later.

[0006] Reference numeral 7 denotes a rotatably provided 1 on the rear body 4.
The rear compaction roller 7 includes a metal drum having an axial dimension larger than that of the front compaction roller 6, and has a water inside like the front compaction roller 6. The weight can be adjusted by enclosing the components. The rear pressure roller 7 is driven to rotate by a hydraulic motor (not shown) provided on the rear vehicle body 4.

The load roller travels on the road surface by rotating the left and right front pressure rollers 6 and the rear pressure roller 7 at the same rotational speed. 6. The pavement material laid on the road surface by the rear roller 7 is rolled.

Reference numeral 8 denotes a frame constituting the front vehicle body 2. The frame 8 includes left and right side plates 8 as shown in FIG.
A, 8A, a rear plate 8B connecting the rear ends of the side plates 8A, and a cross beam 8C connecting the lower ends of the left and right side plates 8A, 8A. Between 8A,
An engine housing 8D for housing the engine 11 and the like is formed.

Reference numeral 9 denotes a floor plate provided on the frame 8. The floor plate 9 is made of a substantially rectangular steel plate as a whole, and closes the rear end of the upper end of the frame 8. In the center of the front part of the floor panel 9, a support leg 9A for supporting a control table 17 described later is provided upright.

Reference numeral 10 denotes a front guard which is located on the front side of the left and right front pressure rollers 6 and connects the left and right side plates 8A of the frame 8 to each other. And a headlight (not shown) is provided inside. And front guard 10
Is to prevent the front portion of the front vehicle body 2 from being damaged by colliding with an obstacle such as a fence during pavement work on a road surface.

Reference numeral 11 denotes an engine accommodated in an engine accommodating portion 8D of the frame 8, and the engine 11 is mounted on inner surfaces of left and right side plates 8A constituting the frame 8 via a mounting member. . 12 and 12 are frames 8
The left and right hydraulic motors 12 are mounted on the left and right side plates 8A, respectively, and the hydraulic motors 12 drive the front-side pressure rollers 6 respectively.

An upper surface cover 13 is provided at the front end of the upper end of the frame 8 so as to be openable and closable. The front end of the upper surface cover 13 has two hinge members 14 and 14 spaced apart in the left and right directions.
, Is rotatably connected to a radiator grill 15 described later. Then, the upper cover 13 is attached to the hinge member 1.
By rotating about the center 4, it is displaced between a closed position for covering the engine 11 and the like from above and an open position for exposing the engine 11 and the like.

Numeral 15 denotes a radiator grill provided on the front end side of the side plate 8A constituting the frame 8. The radiator grill 15 is formed of a substantially rectangular plate, and has a plurality of ventilation holes 15A, 15A,. ing. The radiator grill 15 covers the engine 11 and the like housed in the engine housing portion 8D of the frame 8 from the front side.

16 and 16 are separated from each other in the left and right directions.
The two driver seats mounted on the rear of the vehicle, 17 are each driver's seat 16
The control platform 17 is provided in front of the vehicle, and the control platform 17
Is disposed on the support leg 9A erected in the front center of the
It extends to the right. Steering steering devices 18 and 18 are provided at positions corresponding to the left and right driver's seats 16 of the cockpit 17, and by steering one of the steering devices 18, the above-mentioned steering device is operated. The traveling direction of the road roller is controlled by the expansion and contraction of the steering cylinder 5 and the swinging movement of the rear vehicle body 4 to the left and right with respect to the front vehicle body 2 around the coupling device 3. The upper side of each driver's seat 16 is covered with a canopy 19.

Here, when the pavement material laid on the road surface is compacted using the load roller, for example, when the front-side pressure roller 6 or the like rides on a curb or the like provided on both the left and right sides of the road surface. In such a case, there is a possibility that the curb stone or the like may be damaged by the front-side pressure roller 6.

For this reason, for example, when paving the right side of the road surface, the operator controls the running of the road roller by the right steering device 18 to monitor the interference between the right front pressure roller 6 and the curb, When paving the left side of the road surface, the operator can control the traveling of the road roller by the left steering device 18 in order to monitor the interference between the left front rolling roller 6 and the curb.

Reference numerals 20, 20 denote left and right getting on and off steps provided on the left and right side plates 8A of the frame 8, respectively.
Each step 20 for getting on and off forms a scaffold when the operator gets on and off the driver's seat 16.

Are four handrails erected at the corners of the floor panel 9, and each handrail 21 is gripped by an operator who gets on and off the driver's seat 16 using the step 20 for getting on and off. By doing so, safety when getting on and off the driver's seat 16 is ensured.

Reference numerals 22 and 22 denote left and right watering nozzles projecting from the left and right side plates 8A of the frame 8 to the outside. Each of the watering nozzles 22 is located below the floor plate 9. And extends in the width direction of the left and right front pressure rollers 6. The left and right watering nozzles 22 are connected to, for example, a pump (not shown) provided in the engine accommodating portion 8D of the frame 8 to supply water or the like pumped from the pump to each front-side pressure roller 6. The surface of the front side pressure roller 6 is prevented from adhering to the surface during the pavement work by spraying the surface of the pavement material.

Reference numerals 23, 23 denote left and right roller monitoring mirrors provided on the upper front sides of the left and right side plates 8A, 6A of the frame 8, and each of the roller monitoring mirrors 23 is a driver's seat during pavement work. The operator seated on the monitor 16 monitors whether or not the paving material has adhered to the surfaces of the left and right front rolling rollers 6.

The road roller according to the prior art has the above-described configuration. When pavement work is performed on a road surface using the road roller, an operator sitting in the driver's seat 16 operates the steering device 18 and the like. The road roller is run, and the surface of the pavement material laid on the road surface is compacted by the front-side compaction roller 6 and the rear-side compaction roller 7 to perform pavement work on the road surface.

During pavement work on a road surface using a road roller, an operator sitting in the driver's seat 16
The roller monitoring mirror 23 monitors whether or not the paving material adheres to the surface of the right front pressure roller 6.

[0023]

Before performing the pavement work on the road surface using the road roller as described above, it is usual to perform maintenance on the engine 11 or adjust the position of the left and right roller monitoring mirrors 23. It is necessary to perform a start-up inspection work such as this.

However, the conventional load roller has the following inconvenience when performing the above-mentioned start-up inspection work.

That is, the operator normally moves from the floor plate 9 onto the front pressure roller 6, and opens the top cover 13 on the front pressure roller 6 to perform maintenance of the engine 11, or to perform left / right operation. The position of the roller monitoring mirror 23 is adjusted, but the surface of the front-side compaction roller 6 is easily slid by mud, pavement material and the like adhered during pavement work.

On the other hand, as shown in FIG.
Side plate 8A of frame 8 and front pressure roller 6
A gap a is formed between the front side of the floor plate 9 and a gap b between the front end of the floor plate 9 and the surface of the iron wheel of the front-side pressure roller 6. For this reason, when the operator slides his or her feet on the front-side pressure roller 6, there is a possibility that the toe or the like may be caught in the gap a or b.

During pavement work, the front-side pressure roller 6
Water is sprayed from the watering nozzle 22 onto the surface of the
There is a problem that water or the like splashed from the surface of the front side pressure roller 6 is scattered toward the operator through the above-described gap a and the like.

The present invention has been made in view of the above-mentioned problems of the prior art, and has a load capable of covering a gap formed between a frame and a floor plate constituting a front vehicle body and a front-side compaction roller. It is intended to provide rollers.

[0029]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a front body in which left and right front rolling rollers are rotatably provided, and a rear body connected to the front body. A frame having left and right side plates and a rear plate connecting the rear end sides of the respective side plates; and a frame having a rear body on which a pressure roller is rotatably provided. The present invention is applied to a load roller constituted by a floor plate that closes a rear side of an upper end of the frame, an engine provided in the frame, and an upper surface cover provided at a front upper side of the frame and covering the engine.

The first aspect of the present invention is characterized in that an overhanging cover is provided on both the left and right sides of the top cover and covers the upper sides of the left and right front pressure rollers. is there.

With this configuration, the gap formed between the frame forming the front vehicle body and the left and right front compaction rollers, and the floor plate forming the front vehicle body and the left, right
The gap formed between the right front pressure roller and the right front roller can be covered by the overhanging cover. Thus, when the operator performs a start inspection or the like on the front-side rolling roller, it is possible to prevent the toe or the like from being pinched in the above-described gap, thereby improving workability at the start inspection.

According to a second aspect of the present invention, the overhanging cover is
A gap formed between the left and right side plates forming the frame and the inside of the left and right front compaction rollers, a front end of the floor plate and surfaces of the left and right front compaction rollers; And a gap formed between them.

According to a third aspect of the present invention, the left side of the top cover,
The overhanging cover is formed by the overhanging portion of the upper surface cover by projecting the right both sides toward the left and right front pressure rollers from the side plate of the frame and integrally forming them.

[0034] With this configuration, the gap formed between the frame and the floor plate constituting the front vehicle body and the left and right front compaction rollers can be reduced when the engine is covered by the top cover. It can be covered by the overhang of the cover.

According to a fourth aspect of the present invention, a plate-like member separate from the top cover is fixed to the left and right side plates constituting the frame to provide the overhanging cover with the plate-like member. I did it.

With this configuration, the gap formed between the side plate of the frame constituting the front vehicle body and the inside of the left and right front rolling rollers, regardless of whether the top cover is opened or closed, and The gap formed between the floor plate and the surfaces of the left and right front pressure rollers can always be covered by a plate-shaped member provided on the side plate of the frame.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a load roller according to the present invention will be described below in detail with reference to FIGS.

First, FIGS. 1 to 5 show a first embodiment according to the present invention.
Is shown. In this embodiment, the same components as those of the above-described conventional technology are denoted by the same reference numerals,
The description is omitted.

In the figure, reference numeral 31 denotes a vehicle body of a load roller according to the present embodiment. The vehicle body 31 is a front vehicle body 3 described later in which left and right front-side pressure rollers 6, 6 are rotatably provided.
2 and a rear vehicle body 4 which is rotatably provided with a rear-side pressure roller 7 and is connected to a front vehicle body 32 via a connecting device 3.

Numeral 32 denotes a front body 2 according to the above-mentioned prior art.
Instead of the front vehicle body applied to the present embodiment, the front vehicle body 32 includes a frame 33, an engine 11,
9, the upper surface cover 41 and the like.

Reference numeral 33 denotes a frame of the front body 32. As shown in FIG. 4, the frame 33 has left and right side plates 34 and 34 provided with mounting holes 34A for the hydraulic motor 12, respectively.
34 and a rear plate 35 connecting the rear ends of the side plates 34
And lateral beams 36, 36 connecting between the side plates 34, are formed in a box shape, and an engine accommodating portion 37 for accommodating the engine 11 and the like is formed between the left and right side plates 34.

Reference numeral 38 denotes a front guard which is located forward of the front-side pressure roller 6 and connects the side plates 34 of the frame 33 to each other. The front guard 38 is formed in an elongated box shape extending left and right. , A headlight (not shown) is provided therein. The front guard 38 prevents the front portion of the front vehicle body 32 from being damaged by collision with an obstacle such as a fence during pavement work on a road surface.

Reference numeral 39 denotes a floor plate for closing the rear end of the upper end of the frame 33. The floor plate 39 is made of a substantially rectangular steel plate as a whole, and has the left and right driver's seats 16 mounted thereon.
Here, the floor plate 39 includes a central floor portion 39 </ b> A located between the side plates 34 of the frame 33, and left and right from the central floor portion 39 </ b> A.
It consists of left and right overhanging floor portions 39B, 39B that overhang in the right direction. A notch 39 is formed on the front end side of the center floor 39A to avoid a top cover 41 described later.
C is recessed, and on the rear side of the notch 39C,
The support leg 39D which supports 7 is erected.

Reference numeral 40 denotes a radiator grill provided on the front end side of the frame 33 to cover the engine 11 and the like from the front side. The radiator grill 40 is formed of a substantially rectangular plate and has a plurality of ventilation holes 40A, 40A,. Is formed. The radiator grille 40 is located above the front guard 38 and attached to the front end of the side plate 34 using bolts (not shown) or the like.

An upper surface cover 41 is provided on the upper front side of the frame 33 so as to be openable and closable. The upper surface cover 41 includes an upper surface portion 41A, a front surface portion 41B, and left and right side surface portions 41C and 41.
C, and are formed in a lid shape having left and right side portions 41C and 4C.
Overhang portions 43, 43 described later are integrally formed in 1C. The front portion 41B of the top cover 41 and the radiator grille 40 are connected by hinge members 14 and 14, and the top cover 41 rotates around each hinge member 14 to close the engine 11 and the like. It is configured to be displaced between a position and an open position where the engine 11 and the like are exposed.

Reference numerals 42, 42 denote respective side portions 4 of the top cover 41.
The left and right overhangs as overhanging covers integrally formed in 1C. The overhangs 42 project toward the left and right front pressure rollers 6, 6 from the side plates 34 of the frame 33. I have. Then, each overhang portion 42 is provided on the top cover 4.
The flat plate portion 42A extends horizontally from the side surface portion 41C and extends rearward, and includes a narrow arc-shaped curved plate portion 42B extending rearward and downward from the rear end of the flat plate portion 42A. .

Here, as shown in FIG.
1 is in the closed position, the side surface 41 of the top cover 41
The dimension A (the width dimension of the flat plate portion 42A) from C to the side end of the flat plate portion 42A of the overhang portion 42 is larger than the gap a between the side plate 34 of the frame 33 and the inside of the front pressure roller 6. (A> a) is set.

Therefore, the upper surface cover 41 is set to the closed position, and the lower end of each side surface portion 41 C of the upper surface cover 41 is
In the state of contact with the upper end of each side plate 34, the overhang 4
2 covers the upper side of the front-side pressure roller 6 so that the overhang portion 42
3 is configured to cover a gap a formed between the third side plate 34.

The flat plate portion 42A of the overhanging portion 42 has a gap b formed between the front end of the overhanging floor portion 39B of the floor plate 39 and the iron wheel surface of the front-side pressure roller 6 due to its thickness B.
Is configured to cover part of.

Further, as shown in FIGS. 2 and 3, the curved plate portion 42B of the overhang portion 42 extends rearward along the surface of the front-side pressure roller 6, and covers the watering nozzle 22 from above. The structure is such that water or the like that is sprayed from the watering nozzle 22 and rebounds on the surface of the front-side pressure roller 6 is prevented from scattering around.

The load roller according to the present embodiment has the above-described configuration, and there is no particular difference in the basic operation for compacting the pavement material spread on the road surface during the pavement work on the road surface from that of the prior art. .

However, according to the present embodiment, the upper cover 41 provided on the upper end side of the frame 33 constituting the front vehicle body 32 has the left and right covers over the left and right front pressure rollers 6. When the top cover 41 is in the closed position, the overhang portions 42, 42 are integrally formed.
3 and a gap b formed between the front end of the overhanging floor portion 39B of the floor plate 39 and the surface of the front-side pressure roller 6. Can be covered by the overhang portion 42 integrally formed with the upper surface cover 41.

Therefore, the operator slides his / her foot on the front-side pressure roller 6 when performing maintenance work on the engine 11 on the front-side pressure roller 6 or starting work such as adjusting the position of the roller monitoring mirror 23. Even if this is done, it is possible to reliably prevent a toe or the like from being caught in the above-mentioned gap a or gap b, and to perform a start-up inspection work safely.

Further, even if water or the like jetted from the watering nozzle 22 bounces on the surface of the front-side compaction roller 6 during pavement work, the bounced water or the like scatters toward the operator through the above-mentioned gap a or the like. Can be suppressed,
Workability of paving work can also be improved.

FIGS. 6 to 9 show a second embodiment according to the present invention.
This embodiment is characterized in that a plate-like member separate from the top cover is provided on the left and right side plates constituting the frame of the front vehicle body, and the overhanging cover is provided by the plate-like member. It has been configured. In the present embodiment,
The same components as those in the above-described related art are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 51 denotes a front body applied to the present embodiment in place of the above-described front body 2 according to the prior art. The front body 51 is substantially the same as the front body 2 according to the prior art. , The frame 52, the engine 11, the floor plate 59, the top cover 60, and the like, but the left and right side plates 53, 53 constituting the frame 52 have plate-like members 6 described later.
1 and 61 are provided respectively.

Reference numeral 52 denotes a frame of the front vehicle body 51. As shown in FIG. 8, the frame 52 has left and right side plates 53, provided with mounting holes 53A for the hydraulic motor 12, respectively.
53, a rear plate 54, and cross beams 55, 55 are formed in a box shape, and an engine accommodating portion 56 between the side plates 53 is formed. At the front end of each of the side plates 53 constituting the frame 52, a front guard 57 located forward of the front-side pressure roller 6 and extending left and right is provided.
7 and a plurality of vents 58A, 58A,
. Is provided.

Reference numeral 59 denotes a floor plate for closing the rear end of the upper end of the frame 52. The floor plate 59 is composed of a central floor portion 59A and left and right overhanging floor portions 59B, 59B. A notch 59C is recessed on the front end side of the center floor 59A,
A support leg 59D is provided upright on the rear side of the notch 59C.

An upper surface cover 60 is provided at the front upper end of the frame 52 so as to be openable and closable. The upper surface cover 60 is, like the upper surface cover 13 according to the prior art, an upper surface portion 60A, a front surface portion 60B, left and right side surfaces. The front part 60B and the radiator grill 58 are connected by hinge members 14 and 14, respectively.

Reference numerals 61, 61 denote the left and right parts according to the first embodiment.
Instead of the right overhanging portions 42, 42, left and right plate-like members serving as overhanging covers applied to the present embodiment, each of the plate-like members 61 is provided separately from the top cover 60 by a frame 52.
Are provided on the left and right side plates 53 respectively.

Here, the left and right plate members 61 are formed of plate members having an L-shaped cross section, and a vertical surface portion 61A extending in the vertical direction, and a front compaction from the upper end side of the vertical surface portion 61A. And an overhang surface portion 61B that overhangs the roller 6 side. The plate-like member 61 has a front side extending in the length direction extending in the horizontal direction, and a rear side extending in the length direction extending rearward and downward.

Then, as shown in FIG.
The vertical surface portion 61A is fixed to the side surface plate 53 of the frame 52 by bolts 62, 62, so that the vertical surface portion 61A is attached to the upper end side of the side surface plate 53, and the upper side of the front side pressure roller 6 is covered by the overhang surface portion 61B. Has become. The vertical portion 61A of the plate member 61 includes the frame 5
In a portion corresponding to the watering nozzle 22 protruding from the second side plate 53, a notch 61 that avoids the watering nozzle 22 is provided.
C is formed.

Here, as shown in FIG.
A ′ (width dimension of the overhanging surface portion 61B) from the side plate 34 to the side end of the overhanging surface portion 61B of the plate-shaped member 61 is
It is set to be larger than the gap a between the side plate 53 of the frame 52 and the inside of the front-side pressure roller 6 (A '> a).

The rear side in the length direction of the plate member 61 is
The gap b formed between the front end of the overhanging floor portion 59B and the surface of the front-side pressure roller 6 extends to the lower surface side of the overhanging floor portion 59B of the floor plate 59, and is covered by the plate thickness B 'of the overhanging surface portion 61B. It has a configuration that can be used.

The present embodiment has the above-described structure, and the side plate 5 of the frame 52 constituting the front vehicle body 51 is provided.
3 is provided with left and right plate-like members 61, 61 covering the upper side of the front-side pressure roller 6, so that the side plates 53 of the frame 52 and the inside of the front-side pressure roller 6 are formed by the respective plate members 61. And a gap b formed between the front end of the overhanging floor portion 59B of the floor plate 59 and the surface of the front-side pressure roller 6 can be covered.

For this reason, when the operator performs maintenance work on the engine 11 on the front-side pressure roller 6 or performs a start-up inspection operation such as adjusting the position of the roller monitoring mirror 23, the operator slides his / her foot on the front-side pressure roller 6. Even if this is done, it is possible to reliably prevent a toe or the like from being caught in the above-mentioned gap a or gap b, and to perform a start-up inspection work safely.

Further, even if water or the like sprayed from the watering nozzle 22 bounces on the surface of the front-side pressure roller 6 during pavement work, the bounced water or the like splashes toward the operator through the gap a. Can be suppressed by the plate-shaped member 61, and the workability of pavement work can also be improved.

Further, since the left and right plate members 61 are fixed to the side plate 53 of the frame 52 separately from the top cover 60, the above-mentioned gaps a and b are provided regardless of whether the top cover 60 is opened or closed. Can always be covered. Therefore, even if the operator slides his / her feet on the front-side pressure roller 6 with the top cover 60 opened, for example, it is possible to reliably prevent a toe or the like from being caught in the gap a or the gap b.

In the above-described first embodiment, the case where the front portion 41B of the top cover 41 and the radiator grill 40 are connected by the hinge member 14 has been described as an example, but the present invention is not limited to this. For example, as shown by a two-dot chain line in FIG. 2, a hinge member 1 is provided between the upper rear end of the top cover 41 and the surface of the support leg 39D of the floor plate 39.
It is good also as a structure connected by 4 '.

[0070]

As described in detail above, according to the first and second aspects of the present invention, the overhanging cover is located on the left and right sides of the top cover provided on the front side of the upper end of the frame and covers the upper side of the front pressure roller. And a gap formed between the frame forming the front vehicle body and the left and right front compaction rollers, and a floor plate constituting the front vehicle body and the left and right front compaction rollers. The gap formed therebetween can be covered by the overhanging cover. Thus, when the operator performs a start inspection or the like on the front-side rolling roller, it is possible to prevent the toe or the like from being pinched in the above-described gap, thereby improving workability at the start inspection.

According to the third aspect of the present invention, the projecting cover is formed integrally with the left and right sides of the top cover and projecting from the side plate of the frame toward the left and right front rolling rollers. Therefore, when the engine in the frame is covered by the top cover, a gap is formed between the side plate of the frame and the inside of the front compaction roller, and between the floor plate and the surface of the front compaction roller. The gap to be formed can be covered by the overhanging portion of the upper surface cover, so that the operability when the operator performs a start-up inspection or the like on the front roller can be improved.

Further, according to the fourth aspect of the present invention, the overhanging cover is formed by a plate-like member separate from the upper surface cover fixed to the left and right side plates forming the frame. Regardless of opening and closing, the plate-shaped member always covers the gap formed between the side plate of the frame and the inside of the front-side pressure roller and the gap formed between the floor plate and the surface of the front-side pressure roller. be able to. For this reason, when starting work inspection with the top cover open,
Even if the operator slides his or her feet on the front roller, it is possible to reliably prevent a toe or the like from being caught in the above-described gap, thereby improving workability at the time of starting inspection.

[Brief description of the drawings]

FIG. 1 is a front view showing a load roller according to a first embodiment of the present invention.

FIG. 2 is an enlarged front view showing a front vehicle body in FIG. 1;

FIG. 3 is an enlarged plan view showing a floor panel, a top cover, an overhang, and the like of the front vehicle body in an enlarged manner.

FIG. 4 is an exploded perspective view showing a frame, a floor panel, a top cover, an overhang, and the like.

FIG. 5 is a cross-sectional view showing a frame, a floor panel, a top cover, an overhang, and the like, as viewed from a direction indicated by arrows VV in FIG.

FIG. 6 is an enlarged front view similar to FIG. 2, showing a front vehicle body according to a second embodiment.

FIG. 7 is an enlarged plan view showing a floor plate, a top cover, a plate-like member and the like of the front vehicle body in an enlarged manner.

FIG. 8 is an exploded perspective view showing a frame, a floor plate, a top cover, a plate member, and the like.

9 is a cross-sectional view showing a frame, a floor plate, a top cover, a plate-shaped member, and the like, as viewed from the direction of arrows IX-IX in FIG.

FIG. 10 is a front view showing a conventional load roller.

FIG. 11 is a plan view showing a state in which a canopy is removed from a conventional load roller.

FIG. 12 shows a frame, a floor plate, a top cover, and the like.
It is sectional drawing seen from the arrow XII-XII direction in the middle.

[Explanation of symbols]

 Reference Signs List 4 rear vehicle body 6 front-side pressure roller 7 rear-side pressure roller 11 engine 32, 51 front body 33, 52 frame 34, 53 side plate 35, 54 rear plate 39, 59 floor plate 41, 60 top cover 42 overhang portion (overhang) Cover) 61 Plate member (overhang cover)

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshiyoshi Hirasawa 650, Kandate-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. F-term in Tsuchiura factory (reference) 2D052 AA03 AA04 AD01 AD11 BB01 BB05 BB10

Claims (4)

[Claims] 1. A vehicle comprising: a front vehicle body having left and right front-side pressure rollers rotatably provided; and a rear vehicle body connected to the front vehicle body and having a rear-side pressure roller rotatably provided; The front vehicle body includes a frame having left and right side plates and a rear plate connecting the rear ends of the side plates, a floor plate closing an upper rear portion of the frame, and a floor plate provided in the frame. And a top cover provided on the front side of the upper end of the frame and covering the engine, wherein the left and right front rolls are located on both left and right sides of the top cover. A load roller provided with an overhang cover that covers an upper side of the pressure roller. 2. The overhanging cover includes a gap formed between left and right side plates forming the frame and the inside of the left and right front-side compaction rollers, a front end of the floor plate, and The load roller according to claim 1, wherein the load roller is configured to cover a gap formed between the left and right front pressure rollers. 3. The left and right sides of the upper cover are extended toward the left and right front pressure rollers from the side plates of the frame to be integrally formed, so that the extended cover is formed as a projecting portion of the upper cover. Claim 1 comprising:
Or the load roller according to 2. 4. The overhanging cover is formed of the plate-shaped member by providing a plate-shaped member separate from the upper surface cover on the left and right side plates constituting the frame. 3. The load roller according to 1 or 2.