JPH0442328Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a compaction work vehicle that compacts the bed of railway tracks, etc.

[Conventional technology]

Conventionally, as shown in FIG. 2, as a work vehicle on railway tracks, in addition to running tires 11 for general roads, rail running guide wheels 12 for tracks are provided so as to be movable up and down by hydraulic cylinders etc. There is a revolving body 2 including a seat with an arm 3 attached thereto which can rise and fall and bend freely.

The undulating and bendable arm 3 is attached to the rotating body 2
It consists of a dogleg-shaped first arm 31 that is pivoted to the end of the first arm 31, and a second arm 32 that has one end pivoted to the end of the first arm 31, and connects one of the first cylinders 51 for raising and lowering to the revolving structure 2. attached to the first arm 31,
One side of the second cylinder 52 for refraction is connected to the first arm 3.
1 and the other was attached to the end of the second arm 32.

Further, one end of the third cylinder 53 is connected to the second arm 3.
The third cylinder 53 is attached to the upper part of the third cylinder 53 along the second arm 32, and the other end of the third cylinder 53 is connected to a link mechanism 54 provided at the tip of the second arm 32.

As described above, the work vehicle equipped with the revolving body 2 equipped with a traveling means and the bendable and movable arm 3 can attach various attachments such as a bucket via the link mechanism 54 with a pin or the like depending on the situation. It is used by attaching it to the tip of the second arm 32.

4 in the figure is a compaction device, in which a spatula-shaped clamping piece 41 having a vibrator 48 is provided facing downward from a support part 43 and rotatable by a horizontal rotation cylinder 42, and vertically above the support part 43. A hanging bracket 44a that stands up is formed, and the bracket 44a has a hole 45a for attaching the second arm on the front side and a hole 46a for attaching the link piece of the link mechanism 54 on the outside.

Then, the tip of the second arm 32 is pinned through the hole 45a, and the link mechanism 54 is connected through the hole 46a.
By pinning the compaction device 4 to the tip of the second arm 32 via the link mechanism 54, a compaction work vehicle for compacting the roadbed was obtained.

When such a compaction work vehicle travels on a general path, it travels on running tires 11, and when traveling on rails, it extends hydraulic jacks, etc., lowers the rail running guide wheels 12, and removes them. Use as a guide to prevent rings.

Then, the first cylinder 51 is operated to raise and lower the first arm 31, and the second cylinder 52 is simultaneously operated to bend the second arm 32.
Combining the movements of the arm 31 and the second arm 32, the compaction device 4 is brought to a position above the track bed G. At this time, the link mechanism 54 is moved to the third cylinder 53.
By operating the hole 45a and the hole 46a at a predetermined level, the compaction device 4 is maintained in a vertical position, and the pinching piece 41 is inserted vertically.

The clamping piece 41 is compacted by being inserted while being vibrated by a vibrator 48, or by being inserted into the trackbed G and then vibrated.

Note that the clamping piece 4 is moved by the horizontal rotation cylinder 42.
1 may be changed, and the clip 41 may be inserted into a predetermined position on the track bed G from outside the track.

In addition, in order to perform compaction continuously from one end of the sleeper to the other end, and further from sleeper to sleeper, the compaction device 4
However, if the moving distance is small, the first cylinder 51 operates the raising and lowering motion of the first arm 31, and the second cylinder 52 operates the bending motion of the second arm 32 to move the compaction device 4 up and down and back and forth. If the moving distance is long, the working vehicle itself is also moved and the clamping piece 41 of the compaction device 4 is inserted into a predetermined position on the roadbed G.

[Problems to be solved by this invention]

As described above, conventionally, the vertical posture of the compaction device was maintained by the third cylinder installed along the second arm.

However, the third cylinder must be operated in accordance with the movement of the arm operated by the first and second cylinders.

Therefore, it is very difficult for the operator who operates the cylinder to keep the compaction device vertical, and the operator is easily fatigued and cannot work quickly.

In particular, when compaction is performed one after another, the third cylinder must be operated each time, which tends to increase the overall working time.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
You can easily maintain the vertical position of the compaction equipment.
To provide a compaction work vehicle that can be operated quickly and easily without causing fatigue, and does not take time for continuous compaction.

[Means to solve the problem]

The present invention solves the disadvantages of the conventional example,
An undulating and bendable arm comprising a first arm that can be undulated by a first cylinder and a second arm that is pivoted to the first arm and can be bent by a second cylinder, and is provided with a traveling means. In a compaction work vehicle in which a compaction device using a pinch piece is attached to the tip of the second arm via a link mechanism operated by a third cylinder attached to the rotating body and provided along the second arm, the first arm and the other end of the piece having one end pivoted to the pivot point of the second arm, and the other end of the first bar having one end pivoted to the rotating body below the axis of the first arm, The distance between the two axle attachment points of the piece is equal to the distance between the axle attachment points of the first arm and the first bar on the rotating body side, and the piece and the first The length of the bar is determined, a first parallel link mechanism is constructed, and the second bar is hung between the connecting part of the piece and the first bar and the compaction device in a pivoted state, and both of the pieces are pivoted. The length of the second bar and the two axes of the compaction device are adjusted so that a parallelogram is formed with the point and the two axes of the compaction device as vertices, and the compaction device can be kept vertically. The gist is that the second parallel link mechanism is constructed by determining the position of the second parallel link mechanism.

[Effect]

According to the present invention, the first parallel link mechanism is formed by the piece and the first bar, the pivot point of the first bar on the rotating body side, and the pivot point of the first arm on the rotating body side, and the piece and the second bar A second parallel link mechanism is formed by the shaft attachment point of the second bar on the compaction device side and the shaft attachment point of the second arm on the compaction device side.

When the arm is moved, the first bar of the first parallel link mechanism is centered at the pivot point on the rotating body side,
The pieces move in conjunction with the first bar.

Here, the positions of the pivot point of the first bar on the rotating body side and the pivot point of the first arm on the rotating body side are determined in advance, and the relationship between the two is kept constant regardless of the movement of the arm.

The relationship between the pivot point of the first bar on the rotating body side and the pivot point of the first arm on the rotating body side is maintained as it is between the pivot point of the first bar and the piece by the first parallel link mechanism. This is the relationship between the axis attachment point of the arm and the piece.

Therefore, the relationship between the pivot point of the first bar and the piece and the pivot point of the first arm piece is also kept constant regardless of the movement of the arm.

Further, when the arm is moved, the second bar of the second parallel link mechanism also moves in conjunction with the first bar and the piece.

Here, the relationship between the axis attachment point of the second bar on the compaction device side and the axis attachment point of the first arm on the compaction device side is established by the second parallel link mechanism. The relationship is between the attachment point and the axis attachment point of the second arm and the piece.

Since the first parallel link mechanism and the second parallel link mechanism share a piece, the pivot point between the piece of the first parallel link mechanism and the first arm is the same as that of the piece of the second parallel link mechanism and the second arm. The pivot point between the first parallel link mechanism piece and the first bar is also the pivot point between the first parallel link mechanism piece and the first bar.
It is also the pivot point of the parallel link mechanism piece and the second bar.

Therefore, the pivoting point of the second bar on the compaction device side,
The relationship between the shaft attachment points of the second arm on the compaction device side is the relationship between the shaft attachment points of the first bar on the rotating body side and the relationship between the shaft attachment points of the first arm on the rotating body side, and both shaft attachment points on the compaction device side. The relationship with the point will always remain constant regardless of the movement of the arm.

In other words, the angle between the line above the landing point of both axes on the rotating body side and the horizontal line is the angle between the line above the landing point of both axes on the compaction equipment side and the horizontal line, and this is kept constant regardless of the movement of the arm. It will be.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a compaction vehicle according to the present invention, in which the same components as those in FIG. 2 showing the conventional example are given the same reference numerals. The work vehicle and compaction device are the same as before, and the work vehicle itself includes a revolving structure 2 on the upper part of the vehicle body, which is provided with running tires 11 for general roads and rail running guide wheels 12 for tracks, which are movable up and down. , the first arm 3 pivoted to the rotating body 2
1 and a second arm 32 pivotally attached to the end of the first arm 31, one of the first cylinders 51 for raising and lowering is attached to the revolving body 2, and the other is attached to the first arm 31, and the second cylinder 51 for bending is attached to the first arm 31. An undulating and bendable arm 3 is provided in which one side of the cylinder 52 is attached to the first arm 31 and the other side is attached to the second arm 32.

Further, one end of the third cylinder 53 is connected to the second arm 3.
2, the third cylinder 53 is placed along the second arm 32, and the other end of the third cylinder 53 is attached to the link mechanism 54, which is partially pivoted to the second arm 32, and is attached with a pin or the like. A compaction device 4 was attached to the tip of the second arm 32.

The compaction device 4 is similar to the conventional one in that a spatula-shaped clip 41 having a vibrator 48 is provided facing downward from the support portion 43 and rotatable by a horizontal rotation cylinder 42, but this compaction device 4 is different from the present invention. In the case of an idea,
A hanging bracket 44b that stands vertically above the support part 43 is formed larger than the conventional one, and the bracket 44b has a hole 45b for attaching the second arm on the front side and a link mechanism 54 on the outside.
A hole 46b for attaching the link piece is provided, and further,
A second bar 64, which will be described later, is located near the diagonal position of the hole 45b.
A hole 47 for mounting is provided.

The pivoting point of the first arm 31 and the second arm 32 is designated as P1, and the elongated thin plate-shaped piece 61 is pivoted here,
The first bar 62 is pivoted to the other end of the piece 61, and the pivot point P is
2, the other end of the first bar 62 is pivoted to the rotating body 2, the pivoting point is set to P3, and the pivoting point of the first arm 31 and the rotating body 2 is set to P4.

Here, the distance between P1 and P2 is equal to that between P4 and P3, the distance between P2 and P3 is equal to that between P1 and P4, and a parallelogram is formed with P1, P2, P3, and P4 as vertices. The lengths of the piece 61 and the first bar 62 are determined to form the first parallel link mechanism 63.

Next, one end of the second bar 64 is pivoted to P2, the other end is pivoted to the hole 47 of the bracket 44b as a pivot point P5, and the other end is pivoted to the hole 45b at the tip of the second arm 32 to make the shaft. The destination point is P6.

Here, between P5 and P6 is equal to between P2 and P1, between P2 and P5 is equal to between P1 and P6, and P
1. Determine the length of the second bar 32 and the positions of the holes 45b and 47 so as to form a parallelogram with vertices at P2, P5, and P6, and to keep the compaction device 4 vertical. The second parallel link mechanism 65
shall be.

Next, usage and operation will be explained.

When the compaction work vehicle of the present invention runs on general roads, it runs on running tires 11, and when it runs on rails, it extends hydraulic jacks, lowers the rail running guide wheels 12, and derails them. Use as a guide for prevention.

At the work site, the first parallel link mechanism 63 and the second parallel link mechanism 65 are attached to opposite sides of the arm 3, and in this case, the link piece of the link mechanism 54 is not pinned to the hole 46b and the third cylinder 53
is kept retracted so that the link mechanism 54 does not interfere with the movement of the second arm 32.

Then, the first cylinder 51 is operated to raise and lower the first arm 31, and the second cylinder 52 is simultaneously operated to bend and move the second arm 32. By combining the movements, the compaction device 4 is brought to a position above the trackbed G. At this time, when the arm 3 is moved, the first bar 62 is centered at P3, and the piece 61 is interlocked with the first bar 62. It moves.

Here, the relationship between P2 and P1 is P1, P2, P
The first parallel link mechanism 63 having vertices at P3 and P6 provides a fixed positional relationship between P3 and P4, which is always kept constant regardless of the movement of the arm 3.

Further, when the arm 3 is moved, the second bar 64 moves in conjunction with the first bar 62 and the piece 61.

Here, due to the second parallel link mechanism 65 having P1, P2, P5, and P6 as vertices, the positional relationship between P5 and P6 is the same as that of P1 and P2, and P1, P
2 serves as both the first parallel link mechanism 63 and the second parallel link mechanism 65.

As described above, the relationship between P2 and P1 becomes the relationship P3 and P4 due to the first parallel link mechanism 63, so the positional relationship between P5 and P6 also becomes the relationship P3 and P4.

That is, the direction between P5 and P6 is always kept constant regardless of the movement of arm 3 with respect to the horizontal line.

In other words, the relationship between P5 and P6 is kept constant by the first parallel link mechanism 63 and the second parallel link mechanism 65 regardless of the operation of the arm 3, and the relationship between P5 and P6 is maintained constant regardless of the operation of the arm 3.
5 and P6 so that the compaction device 4 is vertical, the vertical posture of the compaction device 4 can be maintained, and the position of the pinching piece 41 can be adjusted to the trackbed without adjusting the position of the third cylinder 53. It can be inserted into G.

The clamping piece 41 is compacted by being inserted while being vibrated by a vibrator 48, or by being inserted into the trackbed G and then vibrated.

In addition, in order to perform compaction continuously from one end of the sleeper to the other end, and further from sleeper to sleeper, the compaction device 4
However, if the moving distance is small, the first cylinder 51 operates the raising and lowering motion of the first arm 31, and the second cylinder 52 operates the bending motion of the second arm 32 to move the compaction device 4 up and down and back and forth. If the moving distance is long, the working vehicle itself is also moved and the clamping piece 41 of the compaction device 4 is inserted into a predetermined position on the roadbed G.

Also in this case, as described above, the compaction device 4 is connected to the first parallel link mechanism 63 and the second parallel link mechanism 65.
This means that it is always kept vertical.

Note that the clamping piece 4 is moved by the horizontal rotation cylinder 42.
1 may be changed, and the clip 41 may be inserted into a predetermined position on the track bed G from outside the track.

In addition, when it is necessary to insert the clip 41 diagonally, such as when compacting near a point on the track,
Remove the second bar 64 from the bracket 44b and
It is provided along the arm 32 and the first bar 62.

Then, the third cylinder 53 is extended, the link piece of the link mechanism 54 is pivoted to the hole 46b, and the third cylinder 53 is operated to tilt the compaction device 4 for use.

[Effect of idea]

As mentioned above, the compaction work vehicle of the present invention can always keep the compaction device at the end of the arm vertical, so the operator does not need to perform operations to keep it vertical, making the work easier. Now I can do it.

Therefore, the operator does not have to pay extra attention, which reduces fatigue, improves work efficiency, and reduces work time.Especially when performing work one after another, the work time is The shortening of will be significant.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the compaction work vehicle of the present invention, and FIG. 2 is a side view showing a conventional compaction work vehicle. DESCRIPTION OF SYMBOLS 11... Traveling tire, 12... Rail running guide wheel, 2... Swivel body, 3... Arm, 31...
First arm, 32...Second arm, 4...Compaction device, 41...Pinch piece, 42...Horizontal rotation cylinder, 43...Support part, 44a, 44b...Bracket, 45a, 45b... Holes for attaching the second arm, 46a, 46b... Holes for attaching the adjustment link mechanism, 47... Holes for attaching the second bar, 48...
Vibrator, 51...First cylinder, 52...
Second cylinder, 53...Third cylinder, 54...
Link mechanism, 61... piece, 62... first bar, 6
3...first parallel link mechanism, 64...second bar,
65...Second parallel link mechanism, G...Road bed, P
1, P2, P3, P4, P5, P6...Axle attachment points.

Claims (1)

[Scope of utility model registration request] An arm 3 that can be raised and bent is made up of a first arm 31 that can be raised and lowered by a first cylinder 51 and a second arm 32 that is pivoted to the first arm 31 and can be bent by a second cylinder 52. , attached to the revolving body 2 equipped with a traveling means, and attached to the tip of the second arm 32 via a link mechanism 54 operated by a third cylinder 53 installed along the second arm 32.
In a compaction work vehicle equipped with a compaction device 4 using a pinching piece 41, a piece 61 whose one end is pivoted to the pivot point of the first arm 31 and the second arm 32, the other end, and a The other ends of the first bar 62, one end of which is pivoted below the pivot point P4 of the first arm 31, are pivoted to each other, and both ends of the piece 61 are pivoted to the pivot points P1, P2.
The first parallel link mechanism 63 is configured such that the distance between them is equal to the distance between the pivot points P4 and P3 of the first arm 31 and the first bar 62 on the rotating body 4 side, and the piece 61 and the first bar 62 The second bar 64 is hung between the connecting part and the compaction device 4 in a pivoted state, and the two shaft attachment points P1, P2 of the piece 61 and the two shaft attachment points P5, P of the compaction device 4 are connected.
6 are made equal to form a second parallel link mechanism 65.