JP2009108650A - Travelling pointer for road paving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a travelling pointer used as an indication for travelling in paving work by a road paving machine, wherein the travelling pointer can be set easily and quickly without changing the position of the pointer the right or the left in any working condition. <P>SOLUTION: A rail 21 is securely fixed on the front end of the vehicle body 11 in the breadthwise direction while a slider 22 is horizontally and movably mounted on the rail 21. Also, a rod-like pipe 23 is rotatably attached to the slider 22 and a pointer 24 is suspended from the tip end of the pipe 23. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a travel indicator device for a road pavement machine, and more particularly to a travel indicator device for traveling along a reference line or a curb on the side of a vehicle body.

  Conventionally, this kind of road pavement machine feeds the pavement material in the hopper to the rear screw spreader with a bar feeder while self-propelling the vehicle body, diffuses the pavement material left and right by the screw spreader, and the rear end of the leveling arm. It is leveled with a screed suspended from.

  The pavement machine projects a rod sideways from the front end of the vehicle body, hangs a pointer at the tip of the rod and follows the reference line or curb on the side of the vehicle, so that the car body follows the reference line or curb. (See, for example, Patent Document 1).

  9 and 10 show a road paving machine equipped with a conventional travel indicator device, and a counterweight 50 is suspended from the front end of the vehicle body. A rod 51 is provided on the upper surface of the counterweight 50 in the width direction of the vehicle body, and a pointer chain 52 is suspended from the tip of the rod 51. The rod 51 is fixed to the counterweight 50 by a butterfly bolt 53.

  When pavement work is performed, as shown in FIG. 10 (a), the butterfly bolt 53 is once loosened and the rod 51 is pulled out to the side of the vehicle body. The rod 51 is fixed by tightening the butterfly bolt 53 in a state of being aligned along the reference line 54. Then, the vehicle body is caused to travel so that the pointer chain 52 does not come off the reference line 54.

  When the pavement work is not performed, there is a possibility that the rod 51 may protrude and come into contact with other objects. Therefore, as shown in FIG. 10B, the butterfly bolt 53 is once relaxed and the rod 51 is pushed in. The rod 51 is fixed by tightening the butterfly bolt 53 with the tip of 51 not projecting to the side of the vehicle body.

When there is a reference line 54 on the opposite side of the vehicle body, the butterfly bolt 53 is loosened and the rod 51 is temporarily pulled out, the rod 51 is reversed left and right and inserted from the opposite side of the vehicle body, the butterfly bolt 53 is tightened and the rod 51 is tightened. To fix.
JP-A-61-95103 (especially FIG. 1)

  Japanese Patent Laid-Open No. 2004-151867 shows a travel indicator device in FIG. 1, but there is no description of the travel guide device. The conventional travel pointer device described with reference to FIGS. 9 and 10 has a rod protruding to the side of the vehicle body, and the pointer suspended at the tip is fixed in a state along the reference line. Therefore, if there is a reference line on the opposite side of the vehicle body, it was necessary to pull out the rod and turn it left and right to replace it. In addition, the rod pulled out to the side of the vehicle body may hit an obstacle and bend, or the operator may get injured by hooking his / her foot on the rod.

  Therefore, a traveling guide device used as a guide for traveling during pavement work of road paving machines is solved to enable easy and quick setting of the traveling guide device without changing the pointer to the left and right under any work condition. The technical problem which should arise arises, and this invention aims at solving this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is characterized in that a rail is fixed in the width direction of the front end portion of the vehicle body, and a slider is attached to the rail so as to be horizontally movable. Provided is a road indicator device for a road pavement machine, characterized in that a hook-like pipe is rotatably mounted on a slider and a pointer is suspended from the tip of the pipe.

  According to this configuration, when pavement work is performed, the pointer suspended from the tip of the bowl-shaped pipe is protruded in the direction of the reference line on the side of the vehicle body, and according to the distance from the vehicle body to the reference line. Then, the pipe is moved horizontally along with the slider along the rail so that the pointer follows the reference line. In the unlikely event that the pipe comes into contact with an obstacle or comes into contact with the operator's foot, the pipe rotates and the impact is alleviated.

  When pavement work is not performed, the slider is moved to pull the pipe into the vehicle body, and the pipe is accommodated along the rail so as to be substantially parallel, so that the pointer is attracted and does not get in the way.

  When there is a reference line on the opposite side of the vehicle body, the pipe is rotated to the opposite side, and the pointer suspended from the tip of the pipe is projected in a direction having the reference line on the opposite side of the vehicle body. Thereafter, in the same manner as described above, the pipe is moved horizontally together with the slider in accordance with the distance from the vehicle body to the reference line so that the pointer follows the reference line.

  According to a second aspect of the present invention, the rail is formed by a pipe having a rectangular cross section, and the slider is formed by loosely fitting a pipe having a rectangular cross section larger than the rail outside the rail. A road indicator device for a road pavement machine according to claim 1 is provided.

  According to this configuration, the rail is formed of a pipe having a rectangular cross section, and the slider loosely fitted to the outside of the rail has a rectangular cross section having the same shape. Therefore, when the slider moves horizontally along the rail, The slider does not swing back and forth and moves to the left and right while maintaining the horizontal posture.

  According to a third aspect of the present invention, a bracket is fixed to the front surface of the slider, and a shaft projects from the upper surface of the bracket, and a base end of the pipe is fitted to a side surface of a boss that is rotatably fitted to the shaft. The road indicator device for a road pavement machine according to claim 1 or 2, characterized in that is mounted.

  According to this configuration, since the boss to which the base end of the pipe is attached is fitted to the shaft protruding from the bracket, the pipe can be horizontally rotated around the shaft. If there is a reference line on the other side of the car body, turn the pipe from one side of the car body to the other side so that the hand will follow the reference line on the other side of the car body without changing the left and right Can do. If there is an obstacle during the paving work, the pipe is rotated to avoid the obstacle.

  According to a fourth aspect of the present invention, the outer diameter of the shaft projecting from the bracket is a tapered shape that gradually decreases upward, and the inner diameter of the boss is directed upward corresponding to the tapered shape of the shaft. 4. A traveling pointer device for a road pavement machine according to claim 3, wherein the traveling pointer device is tapered.

  According to this configuration, since the outer diameter of the shaft and the inner diameter of the boss are tapered so as to gradually decrease toward the upper side, when the boss is inserted from the upper side of the shaft, backlash occurs on both sides. And the boss can be smoothly rotated with respect to the shaft.

  In the invention according to claim 5, the pipe is composed of an outer pipe mounted on a side surface of the boss, and an inner pipe inserted into the outer pipe, and the inner pipe is drawn from the shortest state into the outer pipe. 5. The road pavement machine according to claim 1, wherein the inner pipe is formed to extend and contract until the inner pipe reaches a longest state drawn from the outer pipe except for a base end portion thereof. A travel indicator device is provided.

  According to this configuration, when pavement work is performed, the inner pipe is pulled out from the outer pipe to lengthen the entire length of the pipe, and the pointer suspended from the tip of the pipe is protruded to the side of the vehicle body. Along the line. When pavement work is not performed, the inner pipe is pulled into the outer pipe to shorten the total length of the pipe, and the pointer suspended at the tip of the pipe is pulled toward the vehicle body.

  In the first aspect of the invention, since the pipe moves horizontally together with the slider, it is possible to move the pipe to the side of the vehicle body where the reference line is located at the time of paving work and to align the pointer suspended at the tip of the pipe along the reference line. Yes, when the pavement is not working, the pipe can be moved by moving it inside the car body. When the reference line is on the opposite side of the vehicle body, the pipe can be moved to the opposite side of the vehicle body together with the slider. In the unlikely event that the pipe touches an obstacle or comes into contact with the operator's foot, the pipe will turn and the impact will be mitigated, thus preventing damage to the pipe or injury to the operator. be able to.

  According to the second aspect of the invention, since the slider loosely fitted to the outside of the rail has a rectangular cross section of the same shape, in addition to the effect of the first aspect, the slider moves horizontally along the rail. The slider does not swing back and forth, and the slider can move left and right while maintaining a horizontal posture.

  In the third aspect of the invention, since the boss at the base end of the pipe is rotatably fitted on the shaft protruding from the bracket of the slider, when there is a reference line on the opposite side of the vehicle body, the shaft is centered on the shaft. By rotating the pipe to the opposite side of the vehicle body, the pointer can be moved along the reference line on the opposite side of the vehicle body. Therefore, in addition to the effect of the invention described in claim 1 or 2, it is not necessary to replace the pipe or the pointer on the left and right, which can contribute to labor saving.

  In the invention described in claim 4, since the outer diameter of the shaft and the inner diameter of the boss are tapered, in addition to the effect of the invention of claim 3, play may occur between the shaft and the boss. The boss can smoothly rotate with respect to the shaft.

  In the invention described in claim 5, since the pipe with the pointer suspended is composed of an outer pipe and an inner pipe, and the entire length of the pipe can be expanded and contracted, in addition to the effect of the invention described in claim 1, 2, 3 or The pointer suspended from the tip of the pipe can be easily stored.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a travel indicator device for a road pavement machine according to the present invention will be described with reference to preferred embodiments. To achieve the purpose of making it possible to easily and quickly set the travel indicator device without changing the pointer to the left or right under any work condition for the travel guide device used as a guide for traveling during paving work on road paving machines. Further, in the present invention, a rail is fixed in the width direction of the front end of the vehicle body, a slider is attached to the rail so as to be horizontally movable, a hook-like pipe is rotatably attached to the slider, and a pointer is attached to the tip of the pipe. Realized by hanging.

  FIG. 1 is a side view showing an asphalt finisher 10 as an example of a road paving machine, and FIG. 2 is a plan view thereof. As shown in FIGS. 1 and 2, the asphalt finisher 10 has a hopper 12 disposed at the front portion of a vehicle body 11, and the asphalt mixture put into the hopper 12 is conveyed rearward by a feeder conveyor 13, so that the vehicle body 11 A screw spreader 14 provided at the rear part is spread in the width direction of the vehicle body 11 while being spread on the road surface, and the spread asphalt mixture is spread by the screed 15 to an equal thickness.

  A leveling arm 16 extends rearward from both sides of the vehicle body 11, and the outer surface of the screed 15 is attached to the rear end of the leveling arm 16. The screed is composed of a main screed 15A and auxiliary screeds 15B and 15C which are provided at the rear of the main screed 15A and can be expanded and contracted in the width direction of the vehicle body 11.

  A counterweight 17 is provided at a lower position of the hopper 12 at the front end of the vehicle body 11. When a push roller 18 is mounted on the front surface of the counterweight 17 and the supply of asphalt composite material is received from a dump (not shown), the pavement is performed while the vehicle is self-propelled while pushing the dump with the push roller 18. . A travel indicator device 20 is provided on the front surface of the counterweight 17 at a lower position of the push roller 18.

  3 is a front view of the travel indicator device 20, and FIG. 4 is a plan view thereof. As shown in FIGS. 3 and 4, the travel indicator device 20 provided on the front surface of the counterweight 17 includes a rail 21 fixed in the width direction of the vehicle body 11 and a slider 22 attached to the rail 21 so as to be horizontally movable. And a hook-like pipe 23 rotatably attached to the slider 22 and a pointer 24 hung from the tip of the pipe 23.

  The pipe 23 is formed such that its entire length is extendable and includes an outer pipe 23A attached to the slider 22 and an inner pipe 23B inserted into the outer pipe 23A. The inner pipe 23B is drawn into the outer pipe 23A. From the shortest state Lmin to the longest state Lmax in which the inner pipe 23B is drawn from the outer pipe 23A except for its base end portion, the entire length is formed to be extendable.

  5A and 5B show the assembled state of the rail 21 and the slider 22. FIG. 5A is a plan view with the intermediate part omitted, FIG. 5B is a front view with the left part omitted, and FIG. It is a right view when the pipe 23 is rotated to the right side in the figure (b). As shown in FIGS. 5A to 5C, the rail 21 is formed by a pipe having a rectangular cross section, and a pipe having a rectangular cross section larger than the rail 21 is loosely fitted on the outside of the rail 21. A slider 22 is formed. The left and right ends of the rail 21 are fixed to the front surface of the counterweight 17 in a substantially horizontal state by bolting via a block-shaped mounting seat 26.

  Since the rail 21 and the slider 22 are rectangular sections having the same shape, when the slider 22 moves horizontally along the rail 21, the slider 22 does not swing back and forth, and the left and right sides are maintained while maintaining the horizontal posture. Moving. Since the left and right end portions of the rail 21 are fixed to the front surface of the counterweight 17 by the mounting seat 26, the slider 22 does not fall off the rail 21.

  6A and 6B show the slider 22. FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a right side view. 7A and 7B show an outer pipe 23A which is a part of the pipe 23. FIG. 7A is a front view, FIG. 7B is a side view in which an intermediate portion of the pipe is omitted, and FIG. 7C is a front end portion of the pipe. It is the top view which abbreviate | omitted. 8A and 8B show an inner pipe 23B and a pointer 24 which are a part of the pipe 23. FIG. 8A is a front view in which the lower portion of the pointer is omitted, and FIG. 8B is an illustration in which an intermediate portion of the pipe and a lower portion of the pointer are omitted. FIG.

  As shown in FIGS. 5 and 6, the front surface of the slider 22 is provided with fixing bolt insertion holes 22a at two places on the left and right sides, and a nut 22b is fixed to the front surface of the bolt insertion hole 22a. Yes. If the butterfly bolt 22c screwed to the nut 22b is tightened after the slider 22 is moved to an arbitrary position along the rail 21, the tip of the butterfly bolt 22c passes through the bolt insertion hole 22a and the front surface of the rail 21. The slider 22 is fixed at that position.

  A flat bracket 27 is fixed to the front surface of the slider 22 in a substantially horizontal state. A shaft 28 projects from the upper surface of the bracket 27 and a boss 29 can be rotated on the shaft 28. Fit into. The base end of the pipe 23 is attached to the side surface of the boss 29, and the pipe 23 can be horizontally rotated integrally with the boss 29 around the shaft 28. Reference numeral 30 denotes a bolt for retaining the bolt.

  As shown in FIG. 6, the shaft 28 protruding from the bracket 27 has a tapered shape in which an outer diameter 28 a gradually decreases upward, and the bolt 30 is screwed onto the upper end surface of the shaft 28. Screw holes 31 are provided. The lower end of the shaft 28 is fixed to the bracket 27 by any method such as fitting or screwing.

  As shown in FIG. 7, the boss 29 fitted into the shaft 28 has a tapered shape in which the inner diameter 29 a gradually decreases upward corresponding to the tapered shape of the shaft 28, and the outer surface of the boss 29 The base end of the outer pipe 23A is attached to the base. Bolt insertion holes 23a and 23a for fixing are opened at the front end portion of the outer pipe 23A. A nut 23b is fixed to the front surface of each bolt insertion hole 23a, and a butterfly bolt 23c is screwed into the nut 23b. is there.

  Thus, since the outer diameter 28a of the shaft 28 and the inner diameter 28a of the boss 29 are the same taper shape, when the boss 29 is inserted from above the shaft 28, there is no play in both sides. The boss 29 can be smoothly rotated with respect to the shaft 28.

  As shown in FIG. 8, a pointer 24 formed of a chain is suspended from the tip of an inner pipe 23B inserted into the outer pipe 23A. The base end portion of the inner pipe 23B is inserted into the distal end portion of the outer pipe 23A to form the pipe 23. By changing the pull-out length of the inner pipe 23B with respect to the outer pipe 23A, the total length of the pipe 23 is arbitrarily changed. If the butterfly bolt 23c attached to the outer pipe 23A is tightened at a desired drawing position, the tip of the butterfly bolt 23c presses the upper and lower surfaces of the inner pipe 23B inserted into the outer pipe 23A, and the inner pipe 23B Fixed in position.

  Thus, since the travel indicator device 20 of the present invention is configured, the total length of the pipe 23 can be easily changed, and as shown in FIG. 3, the position of the indicator 24 is changed from the shortest state Lmin to the longest state Lmax. In the meantime, it is possible to reliably follow the position of the reference line. Then, as shown by a two-dot chain line in the figure, if the slider 23 is moved to the opposite side of the vehicle body 11 with the pipe 23 contracted, and the pipe 23 is made to be substantially parallel along the rail 21, the pipe 23 The leading end is pulled into the vehicle body 11 and the pointer 24 suspended from the leading end of the pipe 23 is drawn, so that the traveling pointer device 20 is in the stored state.

  Further, since the pipe 23 is rotatable, if there is an obstacle during the paving work, the obstacle can be easily avoided by turning the pipe 23 as shown by a two-dot chain line in FIG. can do. In the unlikely event that the pipe 23 comes into contact with an obstacle or comes into contact with the operator's foot, the pipe 23 rotates and the impact is alleviated, so that damage to the pipe 23 or injury of the operator may occur. Can be prevented.

  Further, when there is a reference line on the opposite side of the vehicle body 11, the pipe 23 is rotated from one side surface to the other side surface of the vehicle body 11, so that the hand 24 is on the opposite side of the vehicle body 11 without changing the left and right hands. Along the reference line.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

The side view of the asphalt finisher to which this invention was applied. The top view of the asphalt finisher shown in FIG. 1 is a front view of a travel indicator device according to the present invention. The top view of the driving | running | working pointer apparatus shown in FIG. Explanatory drawing which shows the assembly | attachment state of the rail and slider which concern on this invention. Explanatory drawing of the slider which concerns on this invention. Explanatory drawing of the outer pipe which concerns on this invention. Explanatory drawing of the inner pipe and pointer which concern on this invention. The perspective view of the road pavement machine which attached the conventional driving | running | working pointer apparatus. Explanatory drawing of the driving | running | working pointer apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Asphalt finisher 11 Car body 18 Counterweight 20 Travel indicator device 21 Rail 22 Slider 23 Pipe 23A Outer pipe 23B Inner pipe 24 Pointer 27 Bracket 28 Shaft 29 Boss

Claims (5)

  A rail is fixed in the width direction of the front end of the vehicle body, a slider is attached to the rail so that it can move horizontally, a hook-like pipe is rotatably attached to the slider, and a pointer is suspended from the tip of the pipe. A road guide device for road pavement machines.   The rail is formed of a pipe having a rectangular cross section, and the slider is formed by loosely fitting a pipe having a rectangular cross section larger than the rail outside the rail. A road guide device for road paving machines.   A bracket is fixed to the front surface of the slider, a shaft projects from the upper surface of the bracket, and a base end of the pipe is attached to a side surface of a boss that is rotatably fitted to the shaft. The road indicator device for a road pavement machine according to claim 1 or 2.   The outer diameter of the shaft projecting from the bracket is a tapered shape that gradually decreases upward, and the tapered shape that the inner diameter of the boss gradually decreases upward corresponds to the tapered shape of the shaft. The road indicator device for a road pavement machine according to claim 3,   The pipe is composed of an outer pipe mounted on the side surface of the boss and an inner pipe inserted into the outer pipe. From the shortest state in which the inner pipe is drawn into the outer pipe, the inner pipe has its base end. 5. The road indicator device for a road pavement machine according to claim 1, wherein the entire length of the road pavement machine is extendable until reaching the longest state drawn from the outer pipe.

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