JP2014025297A - Construction machinery for pavement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machinery for pavement, capable of comfortably executing expansion/contraction operation and the like of a screed while a signal distribution cable is not exposed to a high temperature and an operator does not have to concern about the signal distribution cable.SOLUTION: A construction machinery for pavement provided with a signal distribution cable 21 disposed astride a traveling vehicle body and a screed 15 is equipped with a bending type wiring support device 22. The bending type wiring support device 22 has a pair of connection members 23, 24 of which respective one ends are link-coupled with each other so as to rotatable in a vertically moving direction, the other end of the connection member 24 on one side of the pair of connection members 23, 24 is link-connected to the screed 15 side so as to rotatable in a vertically moving direction, and the other end of the connection member 23 on the other side is link-connected to the traveling vehicle body side while enabling the traveling vehicle body to rotate in lateral width and vertical directions. The signal distribution cable 21 is disposed along the pair of connection members 23, 24.

Description

  The present invention relates to a pavement construction machine, and in particular, a pavement material such as asphalt mixture supplied to a hopper is conveyed to a telescopic screw device by a feeder device, and a predetermined pavement is formed on the pavement surface by the telescopic screw device. The present invention relates to a construction machine for paving, such as an asphalt finisher, which is uniformly spread in width and then spread to a predetermined thickness by a screed.

  Conventionally, as this type of paving construction machine, for example, there is an asphalt finisher known from Patent Document 1. An asphalt finisher known from Patent Document 1 is shown in FIG.

  The asphalt finisher 1 shown in FIG. 5 is pulled by a traveling vehicle body 3 having a hopper 2 and a leveling arm 4 to the traveling vehicle body 3 and spreads an asphalt composite material, which is a paving material, to smooth the paved surface. It consists of a pair of screeds 5 etc. on the left and right to be finished. Further, in front of the screed 5, a pair of telescopic screw devices 6 are provided on the left and right for spreading the asphalt mixture on the pavement surface. In addition, the arrow D in a figure shows the advancing direction of the asphalt finisher 1. FIG.

  Then, the asphalt composite material that has been heated and loaded on the hopper 2 is fed into the traveling vehicle body by a feeder device (see the feeder device 7 in FIGS. 6 and 7) provided over almost the entire length of the traveling vehicle body 3. 3 is transported to the rear of 3 and dropped onto the telescopic screw device 6. The telescopic screw device 6 rotates the screw blades by the rotation of the screw shaft, and spreads the asphalt mixture fed by the feeder device 7 uniformly over the entire front width of the rear screed 5. The asphalt mixture spread on the pavement surface by the telescopic screw device 6 is spread by the screed 5 and finished as a smooth pavement surface.

  The structure of the screed 5 and the telescopic screw device 6 is shown together with the feeder device 7 in FIGS. 6 and 7.

  6 and 7, the screed 5 includes main screeds 5a and 5a that move in the left-right width direction of the traveling vehicle body 3, and extensions that are detachably attached to left and right outer ends of the main screeds 5a and 5a. It comprises screeds 5b, 5b and formwork sliders 5c, 5c.

  The telescopic screw device 6 includes the main screws 6a, 6a, extension screws 6b, 6b that can move and extend in the left-right width direction of the traveling vehicle body 3 with respect to the main screws 6a, 6a, and the extension screws 6b. , 6b and extension screws 6c, 6c, which are detachably attached by connecting bolts (not shown) with their axial centers aligned with the left and right outer ends, respectively, and left and right inner ends of the main screws 6a, 6a, respectively. The main screw drive unit 8a is attached, and the extension screw drive units 8b and 8b are attached to the inner ends of the extension screws 6b and 6b, respectively. When the screws 6a, 6a, 6b, 6b, 6c, 6c rotate on the outer peripheral surfaces of the screw shafts of the main screws 6a, 6a, the extension screws 6b, 6b, and the extension screws 6c, 6c. Screw blades 6d for spreading the asphalt mixture in the lateral width direction of the traveling vehicle body 3 are provided.

  Further, in the conventional asphalt finisher 1 configured as described above, the position of the asphalt mixture discharge portion of the feeder device 7 is the screw blades 6d and 6d of the main screws 6a and 6a and the screws of the extension screws 6b and 6b. The blades 6d and 6d are set at approximately the center position.

  In the conventional asphalt finisher 1, when the leveling width of the screed 5 is expanded or contracted according to the paving width, the main screeds 5a and 5a are appropriately moved to the left and right together with the formwork sliders 5c and 5c. Alternatively, the extension screeds 5b and 5b are respectively attached between the main screeds 5a and 5a and the formwork sliders 5c and 5c, and these are integrally moved to the right and left as appropriate, and the expansion width of the telescopic screw device 6 is also expanded and contracted. Let

  The extension of the telescopic screw device 6 and the extension of the screed 5 are extended as shown in FIG. 6 when the extension screws 6c and 6c and the extension screed 5b and 5b are not mounted, respectively. When 6c, 6c, the extended screeds 5b, 5b and the mold sliders 5c, 5c are mounted, they are extended as shown in FIG. 7 shows that the left half side is extended by moving the extension screw 6b and the main screed 5a outward in the width direction, and the right half side is not extended by the extension screw 6b and the main screed 5a. ing. 7 shows that the left and right extension screws 6b and 6b and the extension screws 6c and 6c, and the left and right main screed 5a, the extension screed 5b, and the formwork slider 5c are moved outward in the width direction. Shows an expanded state.

  Therefore, in the conventional asphalt finisher 1, when the asphalt mixture is sent to the rear of the traveling vehicle body 3 by the feeder device 7, the sent asphalt mixture becomes the screw of the main screws 6a, 6a. The blades 6d, 6d and the extension screws 6b, 6b are dropped to substantially the center position of the screw blades 6d, 6d, which are the screw blades 6d, 6d of the main screws 6a, 6a and the screws of the extension screws 6b, 6b. The blades 6d, 6d (and the screw blades 6d, 6d of the extension screws 6c, 6c) are spread over the entire front width of the screed 5. 6 and 7, black arrow B indicates that the asphalt mixture discharged from the asphalt mixture discharge portion of the feeder device 7 onto the telescopic screw device 6 spreads over the entire front width of the screed 5. It shows the flow that is being done.

  In addition, by extending the telescopic screw device 6 according to the paving width in this way, the asphalt mixture is spread to the end even on a wide paving surface, and it is possible to spread and spread over the entire width. Become. In the asphalt finisher 1, the extension width formed by the extension screws 6b and 6b and the extension screws 6c and 6c can be extended up to a range indicated by reference numerals S1 and S2 in FIG. 7, respectively.

  By the way, this type of asphalt finisher is provided with a driver's seat on one side of the rearmost end of the traveling vehicle body and working steps on both the left and right sides of the rear end of the screed, as shown in Patent Document 2, for example. . In addition, screed operation panels are provided on the left and right sides of the rear end of the screed so that an operator who takes the work step can perform operations such as adjusting the expansion / contraction in the width direction of the screed and adjusting the level. . On the top surface of the screed operation panel, leveling adjustment switches, screw switches, screed telescopic switches, etc. are arranged, and this screed operation panel is connected to the driver's seat of the traveling vehicle body via a signal wiring cable (also referred to as “harness”). It is electrically connected to the operation panel and control unit on the side.

  In addition, since the screed is always exposed to high-temperature heat, the signal wiring cable does not pass through the inside of the screed, and a handrail is provided between the traveling vehicle body and the screed so that the outside of the screed is placed along the outside. The signal wiring cable is hooked on the handrail in a slack state and wired to correspond to the expansion and contraction operation of the screed.

JP 2001-279611 A. JP 2007-217990 A.

  As described above, in the conventional asphalt finisher, the wiring of the signal wiring cable that electrically connects the operation panel and the control unit on the traveling vehicle body and the screed operation panel provided on the screed side is used for the expansion and contraction operation of the screed and the like. In order to cope with this, the outside of the creed was lined up and wired in a relaxed state. However, in such a wiring method in which the signal wiring cable is loosened, the signal wiring cable is damaged by being hooked on the protrusion or being sandwiched by the screed when the screed is stretched. There were many cases.

  Further, if the screed operation panel is outside the screed, the operability is improved, but the signal wiring cable must be extended by that amount to be further loosened. However, by extending the signal wiring cable, the signal wiring cable does not follow the expansion / contraction of the screed well, and the probability of damage is increased. For this reason, the operator must always perform the expansion / contraction operation while paying attention to the signal wiring cable, which is inconvenient.

  Therefore, it is a solution to provide a construction machine for paving that can comfortably perform the expansion and contraction operation of the screed without exposing the signal wiring cable to high temperatures and without the operator being concerned about the signal wiring cable. The technical problem which should arise arises, and this invention aims at solving this subject.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 includes a traveling vehicle body, a screed mounted on the rear of the traveling vehicle body so as to be movable up and down, the traveling vehicle body, In a pavement construction machine comprising a traveling vehicle body for electrically connecting a screed and a signal wiring cable disposed across the screed, each one end portion rotates in the up and down direction relative to each other. A pair of connecting members movably linked together, and the other end of the connecting member on one side of the pair of connecting members is linked to the screed side so as to be rotatable in the vertical direction; A bending-type wiring support device in which the other end of the connecting member on the other side is linked to the traveling vehicle body side so that the traveling vehicle body can be pivoted in the left-right width direction and vertically pivoted; The signal wiring cable Providing paving construction equipment formed by arranged along a pair of connecting members.

  According to this configuration, the bending-type wiring support device disposed between the traveling vehicle body and the screed is connected so that the pair of connecting members are linked together when the screed rotates in the vertical direction with respect to the traveling vehicle body. In the portion, the connecting members are rotated in the vertical direction to bend (bend) in the folded state, and absorb the rotational displacement amount of the screed in the vertical direction and the expansion / contraction displacement amount in the front-rear direction with respect to the traveling vehicle body. Further, when the screed moves in the left-right width direction with respect to the traveling vehicle body, the displacement amount in the left-right width direction is absorbed by the other end portion of one of the connecting members and the rotation link of the traveling vehicle body. To do. That is, the bending type wiring support device can absorb changes in displacement in the vertical direction, the horizontal direction, and the longitudinal direction of the screed with respect to the traveling vehicle body by bending (bending) without changing the length of the connecting member.

  Therefore, when the signal wiring cable is disposed along the pair of connecting members in the bending type wiring support device so as to move together with the pair of connecting members, the signal wiring cable is not slackened and the traveling vehicle body And can be disposed across the screed.

  In addition, the signal wiring cable can be arranged together with the bending type wiring support device so as not to be exposed to the high temperature of the screed, for example, above the traveling vehicle body and above the screed. Furthermore, since the bending type wiring support device can be greatly extended, it is possible to dispose the screed operation panel or the like outside the screed that is easy for the operator to operate.

  According to a second aspect of the present invention, in the configuration according to the first aspect, the screed includes a main screed and a pair of left and right extending screeds respectively attached to the left and right outer ends of the main screed, and the bent The wiring support device and the signal wiring cable are respectively between the left end of the traveling vehicle body and the left end of the left extension screed, and between the right end of the traveling vehicle body and the right end of the right extension screed. There is provided a construction machine for paving that is provided so that the link connecting portions of each pair of connecting members are always on the upper side and the pair of connecting members are bent.

  According to this configuration, the connecting member and the signal wiring cable can be disposed so as not to be exposed to high temperatures, for example, above the traveling vehicle body and above the screed. Further, the bending of each pair of connecting members is bent together with the signal wiring cable in such a way that the portion where the link is connected is away from the construction surface, that is, always on the upper side, so that the signal wiring cable can be further protected from high temperatures. it can.

  According to a second aspect of the present invention, in the configuration according to the first or second aspect, at least one of the connecting members in the bent wiring support device has an axial center between the ends of the connecting members. Provided is a construction machine for paving which is configured to be rotatable around.

  According to this configuration, when the screed moves with respect to the traveling vehicle body and a twisting force is applied to the bending type wiring support device, at least one connecting member is rotated around the axis, and the twist is reduced. It can smoothly rotate in the vertical and horizontal directions while absorbing.

  According to the first aspect of the present invention, the signal wiring cable is arranged along the pair of connecting members of the bending type wiring support device without making slack, and straddles the traveling vehicle body and the screed together with the pair of connecting members. Since it can be disposed, the signal wiring cable is not hooked on the projection or is not caught in the screed when the screed is extended or contracted, and the signal wiring cable is not damaged. It is also possible to arrange the signal wiring cable together with the bending type wiring support device at a position where it is not exposed to high temperatures, for example, above the traveling vehicle body and screed, and for the operator to install the screed operation panel and the like. It is also possible to arrange it outside the screed which is easy to operate. Therefore, it can be expected to provide a construction machine for paving that can comfortably perform the operation of extending and retracting the screed without exposing the signal wiring cable to a high temperature and without the operator paying attention to the signal wiring cable.

  In the invention according to claim 2, the connecting member and the signal wiring cable are disposed so as not to be exposed to high temperatures, for example, above the traveling vehicle body and above the screed, and the pair of connecting members are not bent. In addition, since the link connecting portion is bent together with the signal wiring cable in a direction away from the construction surface, that is, always on the upper side, the signal cable can be further protected from high temperature, in addition to the effect of the invention of claim 1, Improvement in reliability can be expected.

  In the invention according to claim 3, when a twisting direction force is applied to the wiring support device, the connecting member is rotated around the axis to absorb the twist, and can smoothly rotate in the vertical and horizontal directions. In addition to the effect of the invention of claim 1 or 2, an effect of obtaining a smoother operation can be expected.

The top view of the goose asphalt finisher shown as embodiment of this invention. The AA arrow side view of FIG. The figure explaining the wiring support apparatus in a goose asphalt finisher same as the above. The elements on larger scale explaining the structure of the connection member in a wiring support apparatus same as the above. The side view of the asphalt finisher shown as a conventional construction machine for paving. The figure explaining the case where the width | variety of an expansion-contraction screw apparatus and a screed is extended in the conventional asphalt finisher, without using an extension screw and the extension screed. The figure explaining the case where the width | variety of an expansion-contraction screw apparatus and a screed is extended using the extension screw and the extension screed in the conventional asphalt finisher.

  The present invention provides a construction machine for paving that can comfortably perform a screed expansion and contraction operation, etc., without exposing the signal wiring cable to high temperatures and without an operator being concerned about the signal wiring cable. To achieve the object, a traveling vehicle body, a screed mounted on the rear of the traveling vehicle body so as to be movable up and down, and the traveling vehicle body and the screed for electrically connecting the traveling vehicle body and the screed. In the construction machine for paving provided with the signal wiring cable disposed over the two ends, each of the one end portions has a pair of connecting members that are rotatably coupled to each other in the vertically moving direction, and The other end of one connecting member of the pair of connecting members is linked to the screed side so as to be pivotable in the vertical direction, and the other end of the other connecting member is connected to the traveling vehicle body. A bending-type wiring support device that enables link in the right-and-left width direction and vertical rotation of the vehicle body and that is linked is provided, and the signal wiring cable is disposed along the pair of connecting members. It was realized.

  Hereinafter, a case where the construction machine for paving according to the embodiment of the present invention is applied to a goose asphalt finisher will be described as an example, and a preferred example will be described in detail with reference to FIGS.

  FIG. 1 is a plan view showing a goose asphalt finisher 11 to which the present invention is applied, and FIG. 2 is a side view taken along line AA of FIG. In the following description, the left and right direction left side (arrow D) in FIG. 1 will be described as the front and rear in the front-rear direction, the right side as the rear, the up and down direction as left and right, and the direction perpendicular to the page as the top and bottom. Further, an arrow D in FIG. 1 indicates the traveling direction of the goose asphalt finisher 11.

  In the figure, a goose asphalt finisher 11 has a traveling vehicle body 13 having a hopper 12 and a leveling arm 14 extending rearward from the left and right sides of the traveling vehicle body 13, and is attached to the rear end of the leveling arm 14. Asphalt composite material, which is a paving material, is spread and leveled to smooth the paved surface. A pair of screeds 15 on the left and right, and the asphalt composite material disposed between the traveling vehicle body 13 and the screed 15 are used as the paved surface. It is composed of a pair of telescopic screw devices 16 on the left and right.

  In the asphalt finisher 11, the asphalt composite material heated to be loaded on the hopper 12 is conveyed to the rear of the traveling vehicle body 13 by a feeder device 17 provided over the entire length of the traveling vehicle body 13. Then, it is dropped onto the telescopic screw device 16. The telescopic screw device 16 rotates the screw blade 16a by the rotation of a screw shaft (not shown), and uniformly spreads the asphalt mixture sent by the feeder device 17 over the entire width of the front part of the rear screed 15. spread. Further, the asphalt mixture spread on the pavement surface by the telescopic screw device 16 is spread by the screed 15 and finished to a smooth pavement surface.

  Further, the detailed structure of the asphalt finisher 11 will be described. A main driver's seat 13 a is provided on one side of the rear end portion on the traveling vehicle body 13. In addition, a step 18 for work on which an operator rides is attached to the rear end of each of the left and right screeds 15, and an operator on the work step 18 is attached to the outer end of each screed 15. A screed operation panel 19 for operating the screed 15 is provided via a support member 20. On the upper surface of each screed operation panel 19, a leveling adjustment switch, a screw switch, a screed expansion switch and the like are disposed.

  As shown in FIG. 2, each screed operation panel 19 is electrically connected to an operation panel and a control unit (not shown) disposed on the main driver's seat 13 a side of the traveling vehicle body 13 via a signal wiring cable 21. It is connected to the. The signal wiring cable 21 is held by a bending type wiring support device 22, and is stretched across the traveling vehicle body 13 and the screed 15 together with the bending type wiring support device 22.

  As shown in FIGS. 1 to 3, the bent wiring support device 22 includes a pair of connecting members 23, 24, and one end side of each connecting member 23, 24 is rotated with respect to each other via an intermediate hinge 25. It is connected in a movable state, that is, in a foldable state. Note that the bending by folding is set so that the intermediate hinge portion 25 is always positioned above the one end side of the connecting members 23 and 24, as shown in FIG. is there.

  In addition, the other end side of the connecting member 23 can be turned up and down with the first link portion 26a that allows the movement of the connecting member 23 in the left-right width direction. The second link portion 26 b is connected to the rear surface of the traveling vehicle body 13 via a connecting hinge 26. On the other hand, the other end side of the connecting member 24 is linked to the support member 20 on the screed 15 side to which the screed operation panel 19 is attached via a connecting hinge 27 so as to be rotatable in the vertical direction.

  As shown in FIG. 4, each of the connecting members 23 and 24 has a pipe member 28 and one end side inserted into the pipe member 28 from one end opening side of the pipe member 28. It consists of the pipe material 29 connected so that rotation is possible. That is, the pipe members 28 and 29 can be rotated around the axis of the connecting members 23 and 24. By enabling the rotation, the twist applied to the connecting members 23 and 24 from the outside is removed. Be able to.

  Therefore, the bending type wiring support device 22 disposed between the traveling vehicle body 13 and the screed 15 causes the connection hinge 26 to move when the screed 15 rotates in the vertical direction with respect to the traveling vehicle body 13. The connecting members 23 and 24 rotate in the vertical direction with the vertical rotation of the second link portion 26a and the connecting hinge 27 and the vertical rotation of the intermediate hinge 25, respectively. Accordingly, the screed 15 can be bent with respect to the traveling vehicle body 13 to absorb both the amount of vertical displacement of the screed 15 and the amount of expansion and contraction in the front-rear direction.

  Further, when the screed 15 moves in the left-right width direction with respect to the traveling vehicle body 13, the first link portion 26 a of the connecting hinge 26 that links the other end portion of the connecting member 23 and the traveling vehicle body 13. The horizontal displacement in the horizontal direction absorbs the amount of displacement in the horizontal width direction. Further, when a twist is applied to each of the connecting members 23, 24, the twist is absorbed with the rotation between the pipe material 28 and the pipe material 29.

  That is, the bendable wiring support device 22 bends each change in the amount of displacement of the screed 15 with respect to the traveling vehicle body 13 in the vertical direction, the horizontal direction, and the front-rear direction without changing the length of the connecting members 23, 24. It can be absorbed by (folding) and turning.

  The bending type wiring support device 22 is provided with an attachment member (not shown) so as to be along the side surfaces of the pair of connecting members 23 and 24 without giving the signal wiring cable 21 slack. It is attached. That is, even if the signal wiring cable 21 is wired on the bendable wiring support device 22 without making slack, the bendable wire support device 22 has the screed 15 in the vertical direction with respect to the traveling vehicle body 13. Since each change displaced in the left-right direction and the front-rear direction can be absorbed by bending and turning action without changing the length of the connecting members 23, 24, the signal wiring cable 21 has a slack. Even if it is not arranged, it can be bent together with the connecting members 23 and 24 to absorb changes in the displacement of the screed 15 with respect to the traveling vehicle body 13 in the vertical direction, the horizontal direction, and the longitudinal direction.

  Therefore, in the goose asphalt finisher 11 in which the signal wiring cable 21 is placed along the bent wiring support device 22 in this way, the traveling vehicle body 13 and the screed 15 are not slackened in the signal wiring cable 21. Since the signal wiring cable 21 can be disposed so as to extend over the screed, the signal wiring cable 21 is not hooked on the protrusions and is not caught in the screed 15, and the signal wiring cable 21 can be damaged. Disappear.

  The signal wiring cable 21 is disposed together with the bent wiring support device 22 at a position not greatly affected by heat from the screed 15, that is, above the screed 15. Further, the pair of connecting members 23, The bending of 24 is also set so that the intermediate hinge 25 which is a link coupling portion is away from the construction surface, that is, always positioned above the connecting members 23 and 24. Can be protected from high temperatures.

  As a result, the signal wiring cable 21 is not exposed to the high temperature of the screed 15, and the operator can perform operations such as the expansion / contraction operation of the screed 21 without paying attention to the signal wiring cable 21. .

  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 present invention can be applied to paving construction machines other than goose asphalt finishers.

DESCRIPTION OF SYMBOLS 11 Asphalt finisher 12 Hopper 13 Traveling vehicle body 13a Main driver's seat 14 Leveling arm 15 Screed 15a Main screed 15b Extension screed 15c Formwork slider 16 Telescopic screw device 17 Feeder device 18 Work step 19 Screed operation panel 20 Support member 21 Signal wiring cable 22 Bending Type wiring support device 23 connecting member 24 connecting member 25 intermediate hinge 26 connecting hinge 26a first link portion 26b second link portion 27 connecting hinge

Claims (3)

A traveling vehicle body, a screed mounted on the rear of the traveling vehicle body so as to be vertically movable, and the traveling vehicle body and the screed for electrical connection between the traveling vehicle body and the screed. In a construction machine for paving equipped with a signal wiring cable,
Each of the one end portions has a pair of connecting members which are linked to each other so as to be pivotable in the up and down direction, and the other end portion of one side connecting member of the pair of connecting members is connected to the screed side. The other end of the connecting member on the other side is linked to the traveling vehicle body so that the traveling vehicle body can be pivoted in the lateral width direction and the vertical direction. A pavement construction machine comprising a bending type wiring support device formed by coupling, wherein the signal wiring cable is disposed along the pair of connecting members.   The screed includes a main screed and a pair of left and right extending screeds respectively attached to the left and right outer ends of the main screed, and the bent wiring support device and the signal wiring cable are respectively connected to the traveling vehicle body. Between the left end and the left end of the screed, and between the right end of the traveling vehicle body and the right end of the screed, and the pair of connecting members, the link coupling portion is the pair of connecting members. 2. The construction machine for paving according to claim 1, wherein the pair of connecting members are provided so as to be bent in a state of being always located on the upper side.   The at least one connecting member among the pair of connecting members in the bent wiring support device is configured such that both ends thereof are rotatable around the axis of the connecting member. 2. Construction machine for paving as described in 2.