JPH07156657A - Cab device in construction machine for road work - Google Patents

Abstract

PURPOSE:To prevent visibility from being impaired by lowering down an eye line of an operator, by vertically movably providing a cab device for protecting a driver's seat relating to the main unit of a road work construction machine. CONSTITUTION:A right/left directional running rail 11 is provided in a rear end upper surface of a machine body frame 10 in a running machine body, to fit a running roller 14a of a running mount 14 to a fitting groove 11a of this rail 11, and a supporting shaft 12a of a supporting member 12 in a cab 13 is supported by a supporting pipe 14b of the running mount 14. This supporting member 12 can be,right/left moved by an oil hydraulic motor, drive pulley and an operating belt, and the cab 13, fitting its guide roller 24 to a lift rail 25 of the supporting member 12, is vertically moved relating to the supporting member 12 by extending/contracting a hydraulic cylinder 26, in a right/left directional prescribed position of the cab 13. Accordingly, a cab device is placed in a lifted position to obtain a wide visual field during work and in a low position to obtain convenience for transport during carrying by a carrier vehicle, and workability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab device for road construction machines such as road rollers, asphalt finishers, and base paver.

[0002]

BACKGROUND OF THE INVENTION Generally,
Among construction machines for road construction, there are passenger-type construction machines in which an operator rides in a driver's seat provided on the machine to drive. In order to improve the working environment of the vehicle, it is attempted to provide a cab device for protecting the driver's seat. By the way, since construction machines for road construction such as asphalt finishers are set to run at low speed, many of them cannot run on ordinary roads at normal speed.
To carry it into the work site, it is loaded on a transportation vehicle such as a truck and transferred. If a cab device is installed in the driver's seat of such a construction machine for road construction, the height of the vehicle body (vehicle height) will be correspondingly increased. If you do, the roof of the cab device will be located at a higher position and safe driving will be impaired, and there is a fear that it will exceed the vehicle height limit prescribed by the Road Traffic Law, so it remains as it is. A cab device cannot be installed in. Therefore, it is proposed that the cab device should be low so that the height of the car body does not become too high. However, if this is done, the driver's seat will have to be lowered, and as a result, the driver will sit in the driver's seat. There is a problem that the operator's eyes are lowered and the visibility is sacrificed.

Further, in the case where the work range is wide in the left-right direction, such as the asphalt finisher, the position where the operator can easily operate when performing road construction work is
Depending on the width of the road surface, the reference line, etc., the position may be different at the center position, left side position, or right side position. However, the problem is that the driver's seat that is not used is useless and the operator has to move between driver seats, which is troublesome. Is required.

[0004]

SUMMARY OF THE INVENTION The present invention was conceived with the object of providing a cab device for a construction machine for road construction which can eliminate these drawbacks in view of the above circumstances. When a cab device for protecting a driver's seat on which an operator rides is provided in a machine body of a road construction machine, the cab device is provided so as to be vertically movable with respect to the machine body. Further, the present invention is characterized in that, when a cab device for protecting a driver's seat on which an operator rides is provided in a main body of a road construction machine, the cab device is provided so as to be movable left and right with respect to the main body. It is a thing. Further, according to the present invention, when a cab device for protecting a driver's seat on which an operator rides is provided in a main body of a road construction machine, the cab device is provided so as to be vertically movable and left and right movable with respect to the main body. It is characterized by that.

According to the present invention, the cab on which an operator rides can be moved up and down and left and right as necessary by this configuration.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of an asphalt finisher, and the traveling machine body 1 includes front wheels 2, rear wheels 3,
It is composed of a hopper 4 for receiving the asphalt mixture, a bar feeder 5 for sending the asphalt mixture received by the hopper 4 backward, and a screw spreader 6 for evenly spreading the asphalt mixture sent from the bar feeder 5 on a pavement surface. Further, the screed device 7 towed by the traveling vehicle body 1 includes a tamper 8 for compacting the asphalt mixture spread on the paved surface, a screed plate 9 for smoothing the paved surface, etc. Is the same as before.

Reference numeral 10 denotes a machine body frame of the traveling machine body 1. On the upper surface of the rear end portion of the machine body frame 10, a traveling rail 11 having a length extending over substantially the entire length in the left-right direction of the traveling machine body 1 is laid. The traveling rail 11 is formed with a pair of front and rear fitting grooves 11a facing in the left-right direction. On the other hand, 12 is a support member for a cab 13 which will be described later, and the left and right width of the support member 12 is set to be substantially the same as the left and right width of the cab 13. Has a pair of front and rear support shafts 12a facing in the left-right direction.
Reference numeral 14 denotes a traveling pedestal, and the lateral width of the traveling pedestal 14 is set to be shorter than the lateral width of the support member 12, but the traveling rails 11 are provided at the front, rear, left and right ends of the traveling pedestal 14. A running roller 14a that is fitted in the fitting groove 11a so as to freely move in the left-right direction is supported. Further, a hollow support pipe 14b oriented in the left-right direction is integrally attached to the upper surface of the traveling base 14. The support pipe 14b is penetrated so that the support shaft 12a of the support member 12 can be slid in the left-right direction in a state where the support shaft 12a is retained, so that the support member 12 is integrated with the traveling base 14. While moving left and right along the traveling rail 11,
It is configured so that it can be moved left and right with respect to the traveling base 14.

Here, the support member 12 is moved by the amount that the support member 12 moves left and right with respect to the traveling base 14 so that the traveling rail 1
It is configured to be able to move left and right beyond the left and right end portions of 1 and constitutes the moving means of the present invention. That is, for example, when the support member 12 is moved to the left, the traveling roller 14
When a reaches the left end of the traveling rail 11, the traveling platform 14
Further movement of the support member 1 to the left side is restricted, but the support member 1
2 can move further to the left side beyond the position corresponding to the left end of the traveling rail 11 by moving the support shaft 12a to the left inside the support pipe 14b, whereby the support member 12 has its left and right end portions. Is configured so that it can be moved left and right from the left and right end portions of the traveling rail 11 to a position further protruding outward in the left and right direction.

On the other hand, 15 is a drive device for moving the support member 12 to the left and right, and a drive pulley 16 constituting the drive device 15 is arranged below the left and right ends of the traveling rail 11. On the other hand, a driven pulley 17 is arranged below the left and right ends of the traveling rail 11. An endless actuating belt 18 is suspended between the pulleys 16 and 17, and the lower surface of the support member 12 is integrally fixed to the actuating belt 18 and is attached to the drive pulley 16. The operating belt 18 moves left and right on the basis of forward and reverse driving of a hydraulic motor (not shown) connected in an interlocking manner, and the supporting member 12 moves leftward and rightward accordingly.

The cab 13 is of a box type having a seat 20 for an operator to sit on and a driver's seat 22 equipped with various operating tools such as a driver's steering wheel 21. The upper and lower support brackets 23 and 23a protruding forward are fixedly attached, and a pair of left and right guide rollers 24 are attached to the upper and lower support brackets 23 and 23a, respectively. On the other hand, on the rear surface portion of the support member 12, a pair of left and right elevating rails 25 that are vertically oriented with the upper end inclined slightly forward of the lower end are fixed. The lower half part of the lower part of the machine body frame 10 is slightly spaced rearward from the rear surface part of the body frame 10 and protrudes below the lower surface part of the support member 12. A guide roller 24 on the side of the cab 13 is fitted to the lifting rail 25 so as to be movable in the vertical direction, whereby the cab 13 projects rearward from the rear surface portion of the machine body frame 10. It is supported by the support member 12. Further, 26 is a hydraulic cylinder, and a cylinder tube 26 a of the hydraulic cylinder 26.
The base end portion of is supported by the rear surface portion of the support member 12, and the tip end portion of the piston rod 26b of the hydraulic cylinder 26 is supported by the lower support bracket 23a. The cab 13 moves up and down with respect to the support member 12 as the lower support bracket 23a moves up and down based on the expansion and contraction operation of the hydraulic cylinder 26, and the support member 12 moves based on the drive of the drive device 15 described above. Along with the horizontal movement, the supporting member 12 is integrally moved left and right.

By the way, the cab 13 is located rearward of the rear surface of the machine body frame 10 as described above, that is, above the screed device 7. However, when the cab 13 is moved up and down, the cab 13 is moved to the left and right of the screed device 7. It is set so that it is performed only when it is located at a predetermined position in the direction. Then, when the cab 13 is located above the site where the upper surface of the screed device 7 is the lowest (in the embodiment, the left end of the cab 13 is located above the substantially central position of the screed device 7 in the left-right direction). (When the parts are positioned), the cab 13 can be moved up and down, so that the cab 13 can move downward as much as possible while avoiding the members protruding upward of the screed device 7. There is. Incidentally, when the asphalt finisher is mounted on a transportation vehicle such as a truck and transferred, the leveling arm 27 is moved upward and the screed device 7 is lifted and transferred. Screed device 7 and cab 1 moved down to the bottom
It is needless to say that the positions of 3 and 3 are set so as not to interfere with each other.

In the embodiment of the present invention constructed as described above, the cab 13 is moved to the left and right integrally with the lateral movement of the support member 12 based on the drive of the drive device 15 at a position rearward of the rear surface portion of the machine body frame 10. While moving, it can move up and down with respect to the support member 12 at a predetermined position in the left-right direction. As a result, although the cab 13 for protecting the driver's seat 22 is provided to improve the working environment, when the asphalt finisher is mounted on a transportation vehicle and transferred, the cab 13 is lowered. If it is moved, the cab 13 will be located at a lower position, and the height can be set so as not to exceed the vehicle height limit stipulated by the Road Traffic Law, and the roof of the cab 13 can be used when passing under the elevated line. It is possible to avoid a problem that the section comes into contact with the elevated line, and to perform safe driving. further,
When the operator gets into the cab 13, the cab 13
Keeping the down position also has the advantage that the operator can easily get in. Moreover, since the cab 13 is configured to move up and down at a position rearward of the rear surface portion of the machine body frame 10, the cab 13 is provided on the traveling machine body 1 side.
Without separately securing a space for lowering
There is an advantage that the cab 13 can be moved down to a position lower than the upper surface of the machine body frame 10.

On the other hand, when performing paving work at a work site, after moving the cab 13 upward, the cab 13 is moved left and right to a desired position which is easy for the operator to control according to the width of the road surface, the reference line and the like. If possible, the operator's seat in the driver's seat 22 can have a sufficient field of view, and the workability can be greatly improved. Moreover, unlike the conventional case, it is not necessary to provide a plurality of driver seats, and it is possible to eliminate waste of unused driver seats, or the operator does not have to move between driver seats one by one. Further, since the cab 13 is located rearward of the rear surface portion of the body frame 10, that is, above the screed device, the driver's seat 22
The operator sitting on the table can visually check the working status of the screw spreader 6 and the screed device 7,
There is an advantage that workability and safety can be further improved.

Moreover, in this one, the support member 1
The cab 2 is configured to be able to move left and right beyond the left and right ends of the traveling rail 11 provided on the side of the traveling machine body 1 to a position where the traveling rail 11 further protrudes outward in the left and right direction. 13 can also be moved left and right from the traveling rail 11 to a position protruding outward in the left and right direction.
As a result, in the case where the reference line for paving work is located on one side of the traveling vehicle body 1, if the cab 13 is moved to a position that projects outward from the traveling rail 11 in the left-right direction, Since the reference line can be surely confirmed without the visibility being disturbed by the traveling body 1, the workability can be further improved and the cab 13 can be
If necessary, keep it within the width specified by the law when it is carried in a vehicle while carrying it while projecting to the outside beyond the left and right width specified by the Road Traffic Act to improve the forward visibility during work. It also has the advantage of being able to

[0015]

In summary, since the present invention is constructed as described above, the cab device for protecting the driver's seat is provided to improve the working environment. With a structure that can move up and down with respect to the main body, if the cab device is moved up during work, it will be possible to secure sufficient visibility of the operator sitting in the driver's seat, When transporting construction equipment loaded on a transportation vehicle, lowering the cab device will cause the cab device to be located at a lower position, which exceeds the vehicle height limit prescribed by the Road Traffic Act. Not only can the height be set to a non-high value, but safe driving can be performed. Further, in the case where the cab device is configured to be movable left and right with respect to the main body of the body, it means that the cab device can be moved left and right to a desired position where the operator can easily maneuver according to the width of the road surface and the reference line. Therefore, the workability can be greatly improved. Moreover, unlike the conventional case, it is not necessary to provide a plurality of driver seats, and it is possible to eliminate waste of unused driver seats, or the operator does not have to move between driver seats one by one. Furthermore, with the cab device that can be moved left and right over the traveling rail provided on the main body of the machine, when the reference line for road construction work is located on one side of the traveling machine, Since the reference line can be reliably confirmed without the visibility being obstructed by the traveling aircraft, the workability can be further improved, and the cab device can be adjusted to the left and right width as required by the Road Traffic Act, if necessary. There is an advantage that it can be accommodated within the width defined by the same law when it is loaded on a vehicle and transported while the visibility is improved during the work by projecting it outwardly beyond.

[Brief description of drawings]

FIG. 1 is a side view of an asphalt finisher.

FIG. 2 is a plan view of an asphalt finisher.

FIG. 3 is an enlarged side view of a main part.

FIG. 4 is an enlarged plan view of a main part.

[Explanation of symbols]

 1 Travel Aircraft 11 Travel Rail 13 Cab 22 Driver's Seat 25 Lift Rail

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location E02F 9/16 A

Claims (4)

[Claims] 1. When a cab device for protecting a driver's seat on which an operator rides is provided in a body of a road construction machine, the cab device is provided so as to be vertically movable with respect to the body. Cab equipment in construction machinery for road construction. 2. When a cab device for protecting a driver's seat on which an operator rides is provided in a machine body of a road construction machine, the cab device is provided so as to be movable left and right with respect to the machine body. Cab equipment in construction machinery for road construction. 3. When providing a cab device for protecting a driver's seat on which an operator rides in a body of a road construction machine, the cab device is provided so as to be vertically movable and left and right movable with respect to the body. A cab device in a construction machine for road construction, which is characterized in that 4. The construction machine for road construction according to claim 2 or 3, wherein the cab device is provided with a moving means set so as to be able to move left and right over a traveling rail provided in the body of the machine body. Cab device.