JP4877851B2 - Pavement machine controller moving mechanism - Google Patents

Description

  The present invention relates to a control device moving mechanism for a paving machine that moves a control device for operating the paving machine.

  Conventionally, as a control device moving mechanism of this type of paving machine, for example, there is one disclosed in Patent Document 1. The asphalt finisher disclosed in Patent Document 1 is provided with a control box that controls the operation of the machine. This control box is provided so as to be movable right and left along a horizontal rail provided on the floor. Therefore, the operator can perform the leveling work in a state in which the control box is brought close to each driver seat by moving the control box to the front of each driver seat provided on the left and right sides of the floor body and fixing it at that position. I can do it.

  Conventionally, there is also an asphalt finisher 1 as shown in FIG. The asphalt finisher 1 has a control box 2 attached thereto by a single arm 3 having one end connected to the vehicle body and the other end connected to the control box 2. The control box 2 is moved by the arm 3 to an arbitrary position such as a seat 4L provided on the left side of the vehicle body or a front side of the seat 4R provided on the right side of the vehicle body while drawing an arc locus.

JP 2000-45222 A (see paragraphs [0019], [0021], [0034], FIG. 3 and FIG. 4)

  However, in the paving machine disclosed in the above-mentioned conventional Patent Document 1, the control box is fixed at a predetermined position on the left or right side of the floor body. For this reason, when driving while standing on the screed device in the center of the vehicle body, even if the control box is placed at the position where it is most easy for the operator to operate, for example, at the center position, the control box cannot be fixed at that position. It was.

  Further, in the conventional paving machine shown in FIG. 1, after the control box 2 is moved to an arbitrary position, it is necessary to adjust and fix the direction so that it faces the front of the operator. Therefore, the conventional paving machine shown in FIG. 1 requires not only labor for adjusting the orientation of the control box 3, but also parts for adjusting the orientation of the control box 3.

The present invention has been made to solve such problems,
A parallel link mechanism for moving the control device, which is composed of a pair of arms rotatably connected to the connection portion of the paving machine with the vehicle body and the control device for operating the paving machine, and below the control device It is provided so that it can expand and contract according to the operation of the operator, locks expansion and contraction at a position where the grounding plate is in contact with the body of the paving machine, and supports and fixes the control device to the body of the paving machine via the grounding plate. And a control mechanism moving mechanism for the paving machine.

  According to this configuration, when the control device is moved, the pair of arms constituting the parallel link mechanism are connected to the control device centering on the connection portion of the arm base connected to the vehicle body of the paving machine. The connecting portion is pivoted to support the control device. The control device is pivotally supported in such a manner at the tip ends of the pair of arms, and moves so as to draw an arc while maintaining a state in which the control device always faces a certain direction. For this reason, even if it moves a control apparatus to arbitrary positions, the effort which adjusts and fixes the direction of a control apparatus like the past is not required. In addition, parts for adjusting and fixing the direction of the control device are not required, and the manufacturing cost of the paving machine can be kept low.

In addition, according to this configuration, the control device can contact the grounding plate with the vehicle body of the pavement machine at an arbitrary position moved by the parallel link mechanism according to the operation of the operator. It is supported and fixed to the body of the paving machine via the main plate. For this reason, the operator can operate the paving machine by moving and fixing the control device to an arbitrary position where it can be most easily operated. Further, since the lock mechanism fixes the movement of the control device by the parallel link mechanism and supports the control device at the same time, in addition to the cantilever state supported by the pair of arms, the control device is below the pavement machine body. Both ends are supported. For this reason, the control device is less likely to be shaken by vibration from the paving machine, and damage to the control device due to the shake can be reduced.

  According to the control device moving mechanism of the paving machine according to the present invention, as described above, even if the control device is moved to an arbitrary position, it is necessary to adjust the direction of the control device and fix it as before. It will not be done. In addition, parts for adjusting and fixing the direction of the control device are not required, and the manufacturing cost of the paving machine can be kept low.

It is a top view which shows the asphalt finisher provided with the conventional control box moving mechanism. The crawler type asphalt finisher which has a control device movement mechanism by one embodiment of the present invention as a parallel link mechanism is shown, (a) is the top view, and (b) is the left side view. The locking mechanism which comprises the control apparatus moving mechanism by one Embodiment of this invention is shown, (a) is the partial top view, (b) is the left view. The asphalt finisher in a state where the control box is positioned at the center of the vehicle body using the parallel link mechanism shown in FIG. 2 is shown, (a) is a plan view thereof, and (b) is a left side view thereof.

  Next, the form for implementing this invention is demonstrated.

  FIG. 2 shows a crawler type asphalt finisher 1 having a control device moving mechanism as a parallel link mechanism according to an embodiment of the present invention. FIG. 2 (a) is a plan view thereof, and FIG. 2 (b) is a left side thereof. FIG.

  The asphalt finisher 11 is provided with a hopper 12 on which the asphalt heating mixture is loaded at the front of the vehicle body. The hopper 12 is provided with two conveyors 13 and 13 that convey the heated asphalt mixture loaded in the hopper 12 symmetrically about the machine center line C, and the vehicle body further rearward of the conveyors 13 and 13. A screw spreader 14 is provided at the lower part. The screw spreader 14 has screw blades 14b formed on the outer periphery of the screw shaft 14a. The screw blades 14b rotate as the screw shaft 14a rotates at a constant speed, and are supplied from the conveyors 13 and 13 on the road surface R. The fallen asphalt heating mixture is spread in the width direction of the road surface R and spread. A screed device 15 is provided on the rear side of the vehicle body for smoothing the paved surface by spreading the leveled asphalt heating mixture. The asphalt finisher 11 travels to the left in the figure, which is the traveling direction, by a pair of left and right crawlers 16L and 16R, and pulls the screed device 15.

  Further, a control device 17 for operating the asphalt finisher 11 and driver seats 22L and 22R on which an operator is seated are provided at the upper part of the vehicle body. The control device 17 includes a control box 18, a stand 19 provided below the control box 18, and a foot brake 20 provided on the bottom surface of the stand 19. On the upper surface of the control box 18, there are provided a plurality of operation levers for an operator to operate the traveling direction of the asphalt finisher 11 front and rear, left and right, operation switches for operating engines, actuators, etc., operation dials, and instruments. ing. A hood 21 is provided on the back of the control box 18. The hood 21 is rotated forward by the operator to cover the operation surface of the control box 18 and protect the operation surface of the control box 18 from dust and dirt when not in use.

  The control box 18 is supported on the vehicle body of the asphalt finisher 11 by a pair of arms 31 and 31 having the same length. The vehicle body of the asphalt finisher 11 and one end of the pair of arms 31, 31 are coupled to each other in a stepless manner at connection portions 32, 32 provided on the vehicle body symmetrically with respect to the machine center line C. . In addition, the other end of the pair of arms 31 and 31 and the control box 18 are connected in a steplessly rotatable manner at connection portions 33 and 33 provided in the lower part thereof symmetrically with respect to the center of the control box 18. Has been. The arms 31 and 31 that connect the vehicle body of the asphalt finisher 11 and the control box 18, the connection portions 32 and 32 to the vehicle body of the asphalt finisher 11, and the connection portions 33 and 33 to the control box 18 constitute a parallel link mechanism. ing.

  3A is a partial plan view of the foot brake 20, and FIG. 3B is a left side view thereof.

  The foot brake 20 constitutes a lock mechanism that supports and fixes the control box 18 to the vehicle body 11 a of the asphalt finisher 11, and a support plate 42 is screwed to the bottom surface of the stand 19 and is provided below the control box 18. The foot brake 20 is provided with a down pedal 43 and an up pedal 44.

  The solid line shown in FIG. 7B indicates a state where the down pedal 43 is not depressed, and the two-dot chain line indicates a state where the down pedal 43 is depressed. One end of the down pedal 43 is connected to one end of the link 41 by a pin 46, and the other end of the link 41 is connected to the bent portion 42 a of the support plate 42 by a pin 45. The down pedal 43 is connected to the up pedal 44 by a pin 47, and is connected to a storage unit 50 that stores the tension coil spring 48 by a pin 49. The storage portion 50 is slidably provided within the cylindrical portion 52, and a ground plate 51 having a surface facing the vehicle body 11 a of the asphalt finisher 11 is provided at the lower end of the storage portion 50.

  When the operator depresses the down pedal 43, the pin 49 is lowered along the vertical direction against the contraction force of the tension coil spring 48, and the pin 46 is moved to the operator side. When the down pedal 43 is depressed from the position indicated by the solid line of the height h to the position indicated by the two-dot chain line in contact with the vehicle body 11a of the asphalt finisher 11, each center of the pin 45, the pin 46, and the pin 49 is The tension coil spring 48 is locked at the position where the grounding plate 51 is in contact with the vehicle body 11a of the asphalt finisher 11 while being aligned with the straight line L shown by the two-dot chain line and kept in a state resisting the contraction force of the tension coil spring 48. The

  When the operator steps on the up pedal 44 while the control box 18 is supported and fixed to the vehicle body 11a of the asphalt finisher 11 via the ground plate 51, the down pedal 43 is pushed by the pin 47, and the pin 46 is Move to the opposite side of the operator. As a result, the balanced state in which the centers of the pin 45, the pin 46, and the pin 49 are aligned on the straight line L is broken, and the pin 49 is raised along the vertical direction by the contraction force of the tension coil spring 48. Accordingly, the ground plate 51 that has been in contact with the vehicle body 11 a of the asphalt finisher 11 also returns to the position of the height h, and the control box 18 is supported and fixed to the vehicle body 11 a of the asphalt finisher 11 via the ground plate 51. The released state is released.

  In such a configuration, when the operator moves the control box 18, the pair of arms 31, 31 constituting the parallel link mechanism are connected to the arm 31, 31 base connection portions 32, 32 connected to the vehicle body of the asphalt finisher 11. The connection portions 33 and 33 at the tips of the arms 31 and 31 connected to the control box 18 support the control box 18 while turning around the center.

  4 shows a state in which the control box 18 shown in FIG. 2 is positioned at the center of the vehicle body using the parallel link mechanism provided in the asphalt finisher 11, and (a) is a plan view thereof. (B) is the left side view. In the figure, the same parts as those in FIG.

  According to such a parallel link mechanism according to the present embodiment, when the control box 18 is moved as described above, the control box 18 is rotatably supported by the distal ends of the pair of arms 31, 31. It moves like drawing an arc while always keeping a certain direction. For this reason, even if the control box 18 is moved to an arbitrary position, it is not necessary to adjust and fix the orientation of the control box 18 as in the prior art. Further, the parts for adjusting and fixing the direction of the control box 18 are not necessary, and the manufacturing cost of the asphalt finisher 11 can be reduced accordingly.

  Further, the control box 18 is brought into contact with the vehicle body 11a of the asphalt finisher 11 at an arbitrary position moved by the parallel link mechanism according to the operation of the operator. It is supported and fixed to the vehicle body 11 a of the asphalt finisher 11 through 51. For this reason, the operator can operate the asphalt finisher 11 by moving and fixing the control box 18 to an arbitrary position where it can be most easily operated. Since the foot brake 20 fixes the movement of the control box 18 by the parallel link mechanism and supports the control box 18 at the same time, the control box 18 has a cantilever state supported by the pair of arms 31 and 31, The lower side is in a state where both ends are supported by the vehicle body 11a of the asphalt finisher 11. For this reason, the control box 18 becomes difficult to sway due to vibration from the asphalt finisher 11, and damage to the control box 18 due to the sway can be reduced.

  In the above embodiment, the case where the control device moving mechanism of the paving machine according to the present invention is applied to the control box 18 in the asphalt finisher 11 has been described, but the present invention is not limited to this. For example, the present invention can also be applied to a control box such as a road surface layer regenerator such as a remixer or a re-paver.

DESCRIPTION OF SYMBOLS 11 ... Asphalt finisher 18 ... Control box 19 ... Stand 20 ... Foot brake 31 ... Arm 32, 33 ... Connection part 43 ... Down pedal 44 ... Up pedal 48 ... Tension coil spring 51 ... Ground plate

Claims (1)

A parallel link mechanism for moving the control device, comprising a pair of arms rotatably connected to a connection portion with a vehicle body of the paving machine and a control device for operating the paving machine ;
The control device is provided below the control device so as to be extendable and retractable in response to an operation by an operator. The grounding plate locks the expansion and contraction at a position where the grounding plate is in contact with the vehicle body of the paving machine, and the control device is A control device moving mechanism for a paving machine, comprising a lock mechanism for supporting and fixing the car body of the paving machine.

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