JP2018188890A - Paving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving machine capable of constructing a paving body having water barrier properties in a lower area of pavement of a single pavement layer and using a porous concrete having water permeability and noise reduction performance necessary for drainage in an upper area of the pavement layer.SOLUTION: A paving machine (100) of the present invention comprises: a conveying device (1) for conveying a pavement material (C: for example, a raw concrete material of thixotropic porous concrete); a feeding device (2) for feeding the pavement material (C) to a paving site; a laying and leveling device (3); and vibration application devices (10, 20, 30) for applying vibrations to the pavement material (C). The vibration application devices (10, 20, 30) are located between a discharge part (1A) of the conveying device (1) and the feeding device (2), and are located downward (of the paving machine 100).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a paving machine (asphalt finisher) used for paving roads and the like.

A paving machine (asphalt finisher) has a function of spreading and compacting a paving material over a predetermined area to a uniform thickness over a predetermined width (for example, see Patent Document 1).
In recent years, pavements such as roads have water-blocking properties so that rainwater and the like do not penetrate into the lower area of a single pavement layer by a single construction, and the upper area of the single pavement layer drains rainwater. In some cases, porous (porous) concrete having water permeability and noise reduction performance necessary for the purpose is used. Such porous concrete has a property that the fluidity of the mortar increases when vibration is applied, and the fluidity of the mortar is lost in a stationary state.
When paving with such porous concrete, the raw concrete material is conveyed to the construction site while being kneaded by an agitator vehicle (agitating and transporting vehicle), and the material is applied to the road surface or ground of the construction site by a paving machine (asphalt finisher). Glow down (supply material to the pavement site), and evenly and compact. Then, the vibration force is applied to increase the fluidity of the mortar, and the mortar is lowered in the gap between the coarse aggregates and moved to the lower side or the bottom of the pavement layer. After the compaction, the fluidity of the mortar is lowered by allowing the porous concrete to stand (for example, see Patent Document 2).

As described above, the porous concrete has a property (thixotropic property) in which the fluidity of the mortar increases when vibration is applied and the viscosity increases and fluidization becomes difficult when the vibration stops.
Therefore, when using the porous concrete, it is necessary to give sufficient vibration. And, when spreading and compacting the raw concrete material supplied to the pavement site, by inserting a plate-like vibrator (vibrator) into the lower part of the concrete material, by actively giving vibration energy to the lower part of the pavement, A technique for promoting sedimentation of the mortar and forming a reliable lower water-impervious layer has been proposed (Patent Document 3).
In the related art (Patent Document 3), a vibration applying device that can be moved by human power is positioned below the laid porous concrete to apply vibration. However, it does not disclose a specific configuration applied to a paving machine and a vibration applying device.

JP-A-5-311615 Japanese Patent No. 5904664 JP-A-2006-188535

  The present invention has been proposed in view of the above-mentioned problems of the prior art, and the lower area of the pavement of the single pavement layer has water-impervious properties, and the area above the pavement layer has water permeability necessary for drainage. The purpose is to provide a pavement machine that can construct a pavement using porous concrete having high performance and noise reduction performance.

  The paving machine (100: asphalt finisher) of the present invention includes a conveying device (1: conveyor device) that conveys the paving material (C: raw concrete material of porous concrete having thixotropic properties, for example) (inside the paving machine 100). , Supplying device (2: screw feeder) for supplying the paving material (C) to the paving site, leveling device (3: screed), and vibration applying device (10, 20) for applying vibration to the paving material (C) 30), and the vibration applying device (10, 20, 30) is disposed between the discharge point (1A) of the transport device (1) and the supply device (2), and is below (on the paving machine 100). It is characterized by being located.

In the present invention, the vibration applying device (10, 20, 30) is preferably detachable (relative to the paving machine 100).
Moreover, it is preferable that the width dimension (dimension of the direction orthogonal to the advancing direction) of the vibration addition apparatus (10, 20, 30) is the width length of the pavement width.

  In the paving machine (100) of the present invention, it is preferable that the position of the vibration applying device (10) in the height direction is variable. For example, it is preferable that the installation height of the vibration applying device (10) can be changed in conjunction with the spread leveling device (3: screed).

  The vibration applying device (10, 20, 30) can be configured, for example, by directly hanging a rod vibrator or the like, or a vibration generator (13, 23, 33: weight for eccentricity on the output shaft). It is possible to make it a steel structure with a motor mounted therein.

In the present invention, the paving material (C) is a porous concrete ready-mixed concrete having a property (thixotropic property) in which the fluidity of the mortar increases when vibration is applied, and the viscosity increases when the vibration stops and becomes difficult to fluidize. A material is preferred.
In particular, 1000 kg to 2000 kg of coarse aggregate per 1 m ³ , 500 kg or less of sand, 200 kg to 550 kg of cement, water in an amount of 15 to 50% of water-cement ratio, and evaporation residue relative to the cement mass. A ready-mixed concrete material containing a thixotropic additive (for example, “Saibinol (X-209-074E series)” of Seiden Chemical Co., Ltd.) having a content of 0.5% to 20% is suitable.

According to the paving machine (100: asphalt finisher) of the present invention having the above-described configuration, since the vibration adding device (10, 20, 30) is provided, the paving material (C: for example, the porous material having thixotropy) When paving by laying concrete ready-mixed concrete), efficient paving and continuous paving can be performed while actively applying vibration energy to the paving material (C).
And vibration is given to the pavement material (C) by the vibration applying device (10, 20, 30), the fluidity of the mortar is increased and the pavement layer is moved downward, the mortar content of the lower region is increased, Water impermeability can be improved so that rainwater or the like does not penetrate downward. At the same time, the fluidity of the mortar increases and falls, so that the pores (voids) of the porous structure in the upper region of the pavement layer are suppressed from being filled with the mortar, which is necessary for draining rainwater. Water permeability and noise reduction performance are ensured.

And according to this invention, the vibration addition apparatus (10, 20, 30) is a conveying apparatus (inside the paving machine 100) that conveys the paving material (C: raw concrete material of porous concrete having thixotropy, for example). Since it is arranged between the discharge point (1A) of 1) and the supply device (2: screw feeder) that supplies the pavement material (C) to the pavement site, the pavement material (C) supplied to the pavement site It is possible to add vibration by immersing it inside.
In the present invention, when a device for adding vibration energy (for example, vibrator 3B) is provided in the spread leveling device (3), the vibration energy added by the device (3B) for adding vibration energy is small. It is preferable to be configured (adjusted) as follows.
At the same time, since the vibration applying device (10, 20, 30) is disposed between the discharge point (1A) of the conveying device (1) and the supplying device (2), the paving material (C) to which vibration is applied. Immediately after the fluidity of the mortar is improved, it is leveled and compacted (by the leveling device 3), so that the fluidity of the mortar is high. Then, after the spread leveling device (3) has passed, the mortar portion has moved (lowered) to the lower area of the pavement, and thereafter it remains stationary and no vibration is applied. Therefore, the fluidity of the mortar below the pavement layer does not increase, and it does not spring out above the pavement layer.

And since the vibration addition apparatus (10, 20, 30) is located below (on the paving machine 100), the vibration addition apparatus (10, 20, 30) is immersed in the pavement material thrown into the pavement site. Thus, vibration can be reliably applied to the pavement material (C).
Further, if the vibration applying device (10, 20, 30) has a width dimension of the pavement width, the lower area of the pavement layer has water-imperviousness and the upper area of the pavement layer is water permeable. Performance and noise reduction performance.
In addition to this, if the vibration applying device (10, 20, 30) is detachable, for example, the vibration applying device (10) can be added to an existing large asphalt finisher that has a proven track record in paving (laying and compacting) porous concrete. , 20, 30), the present invention can be easily implemented.

In the present invention, if the position in the height direction of the vibration applying device (10) is variably configured, even if there is unevenness on the paving site, by moving the vibration applying device (10) following the unevenness, The vibration adding device (10) can always be kept immersed in the paving material. At the same time, it is possible to prevent the vibration applying device (10) from being damaged due to interference with the convex portion.
Further, if the vibration applying device (10) is raised in conjunction with the spread leveling device (3) during forwarding, the vibration adding device (10) can be prevented from interfering with an obstacle or the like.

It is a figure which shows the asphalt finisher which concerns on embodiment of this invention. It is the elements on larger scale for demonstrating arrangement | positioning of the vibration addition apparatus in embodiment. It is a partial expanded side view which shows the vibration addition apparatus in 1st Embodiment. It is a front view of the vibration addition apparatus of FIG. It is a partial expanded side view which shows arrangement | positioning of the vibration addition apparatus in 2nd Embodiment of this invention. It is explanatory drawing of the vibration addition apparatus in 2nd Embodiment. It is explanatory drawing which shows the structure different from FIG. 6 of the vibration addition apparatus in 2nd Embodiment. It is a partial expanded side view which shows arrangement | positioning of the vibration addition apparatus in 3rd Embodiment of this invention. It is explanatory drawing which shows the structure of the vibration source in 3rd Embodiment.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
In FIG. 1, a pavement machine (asphalt finisher, AF) according to an embodiment of the present invention is generally indicated by reference numeral 100. The structure of the pavement apparatus 100 shown in FIG. 1 is common to the first to third embodiments.
The paving machine 100 includes a conveying device 1 (conveyor device) for conveying the paving material C inside the paving machine 100, a supply device 2 (screw feeder) for supplying the paving material C to the paving site, and a spread leveling device 3 (screed). And vibration applying devices 10, 20, and 30 (not shown in FIG. 1) for applying vibration to the pavement material C.
The conveyor device 1 is arranged so that the main body of the paving machine 100 extends in the front-rear direction of the paving machine 100, and the paving material C supplied from the hopper 4 is used for the screed 3 arranged at the rearmost part of the paving machine 100. It has a function to transport to the front space.

The paving material C conveyed by the conveyor device 1 is discharged from the discharge location 1A at the rear end of the conveyor device 1 and supplied to the pavement site by the screw feeder 2.
The screw feeder 2 is disposed in front of the screed 3 in the traveling direction of the paving machine 100. The screw feeder 2 extends in the width direction of the pavement machine 100 (direction perpendicular to the paper surface in FIG. 1: the width direction), and the pavement material C is uniformly distributed in the width direction (width direction of the pavement machine 100). Help to supply.
In addition, a baffle plate (not shown) may be provided so that the conveyed paving material C and other materials do not move in front of the screw feeder 2.

In the illustrated embodiment, the paving material C is a porous concrete ready-mixed concrete having a property (thixotropic property) in which the fluidity of the mortar increases when vibration is applied, and the viscosity increases when the vibration stops and becomes difficult to fluidize. It is a material.
For example, 1000 kg to 2000 kg of coarse aggregate per 1 m ³ , 500 kg or less of sand, 200 kg to 550 kg of cement, an amount of water with a water-cement ratio of 15% to 50%, and evaporation residue relative to the cement mass. An embodiment of the present invention includes a ready-mixed concrete material containing a thixotropic additive having a content of 0.5% to 20% (for example, trade name “Cybinol (X-209-074E series)” of Seiden Chemical Co., Ltd.) Then it can be used.

In FIG. 1, the screed 3 is disposed at the rearmost part of the pavement machine 100 and is configured to be stretchable (width is variable) in the width direction of the pavement machine 100 (direction perpendicular to the paper surface of FIG. 1: width direction), It has a function of compacting the paving material C supplied to the pavement site by the screw feeder 2.
The screed 3 includes a tamper 3A and a vibrator 3B. The tamper 3A includes a single tamper and a double tamper, and the pavement material C is beaten immediately after being supplied by the tamper 3A to compact the pavement material C. There is a case where the tamper 3A is omitted.
The vibrator 3B is a device that adds vibration energy, and is provided to efficiently compact the supplied pavement material C. In the illustrated embodiment, the vibration energy applied by the vibrator 3B is adjusted to be small.

The screed 3 includes a pavement thickness adjusting device (not shown in FIG. 1) that adjusts the thickness of the pavement material C supplied to the road surface in addition to the tamper 3A and the vibrator 3B.
The screed 3 is connected to an end portion 5B of a leveling arm 5 (side arm). The leveling arm 5 is disposed on both the left and right side surfaces of the pavement machine 100, and is connected to the main body of the pavement machine 100 using one end 5A as a fulcrum. During the pavement construction, the screed 3 is pulled by the pavement machine 100 in such a manner that the leveling arm 5 can move with a certain degree of freedom in the vertical direction around the end portion 5A.
Even if there is a convex part on the pavement site, the leveling arm 5 is operated, and the screed 3 moves up and down along with the convex part, thereby avoiding the screed 3 from interfering with the convex part and maintaining a certain level. The paving material C can be spread and leveled while ensuring the leveling thickness.
Further, if the vibration applying device 10 is raised in conjunction with the screed 3 during forwarding, the vibration adding device 10 can be prevented from interfering with an obstacle or the like.

In FIG. 1, a pavement machine 100 includes a power device (engine, transmission, etc.) not shown, and travels by driving a tire 6 (travel device). However, a crawler may be provided instead of the tire. In addition, in FIG. 1, the code | symbol 7 shows an operating device and the code | symbol 8 shows a cab.
Although the vibration applying device is not shown in FIG. 1, the vibration applying device 10 in the first embodiment is shown in FIGS. 2 to 4, the vibration applying device 20 in the second embodiment is shown in FIGS. The vibration applying device 30 in the form is shown in FIGS.

In FIG. 2 which shows arrangement | positioning of the vibration addition apparatus 10 in 1st Embodiment, the pavement material C is discharged | emitted from the discharge location 1A of the conveyor apparatus 1, and the pavement material C is supplied to the pavement site | part by the screw feeder 2. FIG. In FIG. 2, the paving material C to be laid is represented with hatching.
As described above with reference to FIG. 1, the screw feeder 2 is connected to the main body of the paving machine 100 by the support member 2A. As described above, the screw feeder 2 extends in the width direction (the width direction of the paving machine 100), and can be configured to be movable up and down.
In order to supply the pavement material C uniformly over the entire width direction, the screw feeder 2 is arranged at a position where at least about half of the whole is immersed (embedded) in the pavement material C in the vertical direction. In the drawing, about 2/3 of the screw feeder 2 is immersed in the pavement material C, but the screw feeder 2 is preferably completely immersed (filled) in the pavement material C.

The vibration adding device 10 is located below the paving machine 100 and is arranged between the discharge location 1A of the conveyor device 1 and the screw feeder 2 (supply device) in the vertical direction. And about the advancing direction (front-back direction) of the pavement machine 100, the vibration addition apparatus 10 is located in the rearmost part of the main body of the pavement machine 100, and in the main body of the pavement machine 100, the rearmost wall 9 extending in the vertical direction. Located just behind and along the rearmost wall 9.
As shown in FIG. 2, the vibration applying device 10 is disposed at a position close to the road surface or the ground (vertically downward) as a paving site (downward in the vertical direction), and the paving material C (hatched by hatching) discharged from the discharge location 1A of the conveyor device 1 It is completely immersed in (shown). Since the vibration applying device 10 is completely immersed in the pavement material C, vibration is reliably added to the pavement material C discharged from the conveyor device 1 and the fluidity of the mortar is improved.

Here, if the vibration applying device 10 is fixed to the rearmost wall 9, and the vertical position of the vibration adding device 10 is fixed, the vibration adding device interferes with the convex portion of the pavement site and is damaged. An inconvenience is considered. In order to avoid such an inconvenience, it is preferable that the vibration applying device 10 is movable up and down (the position in the height direction is variable).
As will be described with reference to FIGS. 3 and 4, the vibration applying device 10 in the first embodiment can move up and down.

3 and 4 showing the vibration applying device 10 according to the first embodiment, the vibration applying device 10 includes both end portions of the pavement machine 100 in the width direction (the direction perpendicular to the paper surface in FIG. 3; the left-right direction in FIG. 4). A hollow body pipe portion 12 having a circular cross section extending to Therefore, the width dimension (dimension in the width direction) of the vibration applying device 10 is the width length of the pavement width.
As shown in FIG. 4, the main body pipe portion 12 is divided into two parts, a first main body pipe portion 12A (a left region in FIG. 4) and a second main body pipe portion 12B (a right region in FIG. 4). The main body pipe portion 12A and the second main body pipe portion 12B are connected to each other via a vibration-proof rubber 12C at the center in the width direction. The anti-vibration rubber 12 </ b> C is supported by the rearmost wall 9.
In the hollow portions of the first main body pipe portion 12A and the second main body pipe portion 12B, the end portion on the side opposite to the vibration isolating rubber 12C in the width direction (that is, the end portion on the pavement machine 100 side end portion side) Vibration generating pipes 11A and 11B each having a circular cross section are arranged (FIG. 4) and fixed. Both end faces of the first and second vibration generating pipes 11A and 11B are also closed.

Vibration generating pipes 11A and 11B are fixed in the hollow portions of the first and second main body pipes 12A and 12B, respectively. The vibration generating pipes 11A and 11B are also configured as hollow pipes having a circular cross section, and a motor 13 that is a vibration generator is fixed at the approximate center in the width direction of the hollow portion.
Although not shown in FIG. 4, an eccentric weight is attached to the output shaft of the motor 13. If power is supplied from a power source (not shown in FIG. 4) via the power cable, the motor 13 is driven to output shaft. Rotates. Here, since an eccentric weight is attached to the output shaft, vibration is generated by the action of the eccentric weight when the output shaft of the motor 13 rotates.
The above-described configuration that generates vibration is also used in a second embodiment described later with reference to FIGS. 5 and 6.

3 and 4, both end portions in the width direction of the main body pipe 12 (first and second main body pipes 12A and 12B) are rotatably connected by a known connection mechanism 15 (FIG. 4). The connection mechanism 15 is provided at the lower ends of the first and second connection members 14A and 14B and includes a vibration isolation mechanism. The first and second connecting members 14A and 14B extend in the vertical direction, and each of the opposite ends of the connecting mechanism 15 of the connecting members 14A and 14B is connected to the side surface of the pavement machine 100 main body by a known connecting mechanism 16. Is connected to the leveling arm 5 in a rotatable manner.
In FIG. 4, a turnbuckle mechanism 14C is provided at the approximate center in the longitudinal direction of the first and second connecting members 14A and 14B, respectively, and the longitudinal direction of the first and second connecting members 14A and 14B is provided. It is possible to finely adjust the vertical position of the vibration device 10 by finely adjusting the length.
The vibration applying device 10 according to the first embodiment includes the main body pipe 12 and the connecting member 14 and is attached to the leveling arm 5, so that it can be attached to and detached from the paver 100 and can be retrofitted. .

As described above, in FIGS. 3 and 4, when the motor 13 fixed to the vibration generating pipes 11 </ b> A and 11 </ b> B is energized and the output shaft rotates, vibration is generated by the action of the eccentric weight.
The vibration generating pipes 11A and 11B fixing the motor 13 are vibrated by the vibration of the motor 13, and the first and second main body pipes 12A and 12B fixing the vibration generating pipes 11A and 11B are vibrated to add vibration. Vibration is applied from the apparatus 10 to the pavement material C (see FIG. 2). Therefore, vibration can be added to the pavement material C discharged from the conveyor device 1 to improve the fluidity of the mortar of the pavement material C.

In FIG. 4, the vibration generating pipes 11 to which the motors 13 with eccentric weights are fixed are arranged at two places, one in each of the vibration generating pipes 11A and 11B. Vibration can be reliably applied to the paving material C over the entire width direction.
Here, since the main body pipe 12 is attached to the leveling arm 5 via the connecting member 14, the screed 3 (FIGS. 1 and 2) is moved up and down by the leveling arm 5 (arrow A and FIG. 3). Following this, the main body pipe 12 which is the vibration applying device 10 also moves up and down (arrow B, FIG. 3), so that the position in the height direction of the vibration applying device 10 in the first embodiment is variable.

In FIG. 4, one vibration generating pipe 11 is arranged in each of the first and second main body pipes 12A and 12B, but a plurality of vibration generating pipes 11 can be arranged. Further, the pipe cross sections of the main body pipe 12 and the vibration generating pipe 11 are not limited to a circle but may be a square, a triangle, or other shapes. In particular, the cross-sectional shape is not limited.
In the vibration generator 10 shown in FIGS. 3 and 4, the motor 13 is disposed in the pipe to prevent the motor from being directly immersed in the paving material C. Here, since the motor 13 is disposed in the pipe, it is considered that the temperature of the hollow portion of the pipe rises. As described above, the vibration generator 10 is immersed in the highly fluid pavement material C supplied to the pavement surface. Therefore, the heat generated in the pipe is transmitted by the paving material C, and the temperature of the space in which the motor 13 is attached is prevented from becoming too high.
Here, as the vibration generating pipe 11, you may utilize the rod-shaped vibrator etc. which are used for concrete placement.

According to 1st Embodiment shown in FIGS. 1-4, since the vibration addition apparatus 10 is provided, when laying and paving the paving material C (For example, the raw concrete material of the porous concrete which has thixotropic property). Can efficiently level the floor while adding vibration energy to the paving material C.
That is, since vibration energy is added, the fluidity of the mortar of the paving material C increases and moves downward in the pavement layer, increasing the mortar content of the lower region, and preventing water from penetrating rainwater or the like downward. Can be secured. And since the fluidity of the mortar increases and falls, it is suppressed that the pores (voids) of the porous structure in the upper region of the pavement layer are filled with the mortar, and the water permeability necessary for draining rainwater. And noise reduction performance is ensured.

In the front-rear direction of the paving machine 100, the vibration adding device 10 is positioned on the paving material C between the discharge location 1 </ b> A of the conveyor device 1 and the screw feeder 2, and at a lower position in the vertical direction of the paving machine 100. Has been placed. Therefore, the vibration applying device 10 can be immersed in the pavement material C supplied to the pavement site and reliably apply vibration to the pavement material C.
Moreover, since the fluidity of the mortar of the paving material C has already been improved by the vibration applying device 10, even if vibration is added by the tamper 3A and the vibrator 3B in the screed 3, the fluidity of the mortar increases and the paving is performed. It does not rise (or spring out) to the surface porous structure, and the mortar does not fill the voids in the porous structure.
After the screed 3 passes, the mortar part moves (lowers) to the lower area of the pavement, and then remains stationary, no vibration is added, and the fluidity of the mortar part below the pavement layer increases. Never do.

Further, since the vibration applying device 10 is configured by the main body pipes 12A and 12B extending to the vicinity of both ends of the paving machine 100 in the width direction, the vibration adding device 10 is applied to the paving material C in the width direction of the paving machine 100. Add vibration.
Further, the vibration adding device 10 includes a main body pipe 12 and a connecting member 14, and since the connecting member 14 is connected to the leveling arm 5 on the main body side of the pavement machine 100, the vibration adding device 10 is detachable from the pavement machine 100. It is. Therefore, for example, the vibration addition apparatus 10 in the first embodiment can be retrofitted to an existing asphalt finisher that has a proven track record in porous concrete paving.

Since the vibration applying device 10 is attached to the leveling arm 5 via the connecting member 14, the vibration adding device 10 moves up and down as the screed 3 moves up and down, so that the position in the height direction is variable.
Therefore, even if there is unevenness on the pavement site, if the vibration applying device 10 is moved up and down in conjunction with the screed 3, it can prevent the vibration adding device 10 from being damaged due to interference with the convex portion, The pavement machine 100 can be run with the vibration applying device 10 raised during forwarding.
In addition, the vibration applying device 10 can perform fine adjustment in the height direction by the turnbuckle mechanism 14A of the connecting member 14.

Next, a vibration applying device according to a second embodiment of the present invention will be described with reference to FIGS. Here, the paving machine in the second embodiment is also expressed with the same reference numeral 100 as in the first embodiment. In this respect, the third embodiment of FIGS. 8 and 9 is the same.
In FIG. 5 which shows arrangement | positioning of the vibration addition apparatus 20 in 2nd Embodiment, the vibration addition apparatus 20 is arrange | positioned between the discharge location 1A of the conveyor apparatus 1 and the screw feeder 2 (supply apparatus) about the front-back direction of the paving machine 100. Has been. The vibration applying device 20 is located below the pavement machine 100.

The vibration applying device 20 is configured by fixing a vibration generating pipe 21 to an outer surface 22A of a housing 22. The housing 22 is made of a relatively thin steel plate, has a hollow triangular prism shape, and extends in the width direction (direction perpendicular to the paper surface in FIG. 5).
The vibration generating pipe 21 is fixed, for example, at a substantially central position in the width direction on the outer surface 22A of the housing 22. A motor 23 (FIG. 6) is fixed to the vibration generating pipe 21 as a vibration generator.
In FIG. 5, the hollow triangular prism-shaped housing 22 is attached to the rearmost wall 9 of the main body of the paving machine 100 via a bracket 28. The housing 22 extends in the width direction along the rearmost wall 9 and can be extended in the width direction of the paving machine 100, or a plurality of vibration applying devices 20 can be provided.

FIG. 6 shows a vibration generating pipe 21 of the vibration applying device 20.
The vibration generating pipe 21 is a hollow member having a circular cross section, and its length dimension is, for example, about 50 cm. A motor 23 is fixed as a vibration generator on the inner wall at the approximate center in the width direction of the hollow portion of the vibration generating pipe 21. Note that both end faces of the vibration generating pipe 21 are closed.
An eccentric weight 25 is attached to the output shaft 24 of the motor 23, and a power cable 26 is routed from the power source (not shown) to the motor 23. The power cable 26 is covered and protected by a flexible tube 27 outside the vibration generating pipe 21 and routed to the power source.

In the same manner as described above for the first embodiment, when the motor 23 is driven and the output shaft 24 rotates by energization by a power source and a power cable 26 (not shown), vibration is generated by the action of the eccentric weight 25. The vibration generating pipe 21 that fixes the motor 23 vibrates, and the entire hollow triangular prism-shaped housing 22 that fixes the vibration generating pipe 21 vibrates. As a result, vibration is added to the pavement material C discharged from the conveyor device 1.
5 and 6, only one vibration generating pipe 21 is fixed to the hollow triangular prism-shaped housing 22, but a plurality of vibration generating pipes 21 may be fixed to the hollow triangular prism-shaped housing 22.

According to the paving machine 100 of the second embodiment shown in FIGS. 5 to 6, the motor 23 as a drive source is arranged in the hollow vibration generating pipe 21 as in the first embodiment. Even if the vibration applying device 20 is immersed in the material C, the motor 23 is prevented from being directly immersed in the paving material C.
Even if the motor 23 is driven in the closed space in the vibration generating pipe 21 to generate heat, the vibration generating pipe 21 is immersed in the pavement material C. Therefore, the motor is passed through the vibration generating pipe 21 and the pavement material C. 23 heat can be dissipated.

Since the hollow triangular prism-shaped housing 22 is attached to the rearmost wall 9 of the main body of the pavement machine 100 via the bracket 28, the vibration adding device 20 can be easily attached to and detached from the pavement machine 100.
Other configurations and operational effects in the second embodiment are the same as those in the first embodiment shown in FIGS.

Next, with reference to FIG. 7, the modification of the vibration addition apparatus 20 in 2nd Embodiment is demonstrated.
In FIG. 7, the vibration applying device 20A includes a vibration generating pipe 21A, a motor 23A disposed outside the vibration generating pipe 21A, and a flexible tube 27A that connects the motor 23A and the vibration generating pipe 21A. The output shaft 24A of the motor 23A is connected to one end of the flexible tube 27A via a coupling 29A. The other end of the flexible tube 27A is connected to a vibrator (not shown), and the vibrator (not shown) is accommodated in the vibration generating pipe 21A.
Since the motor 23A is disposed separately from the vibration generating pipe 21A, it is not disposed in the paving material C.
The vibration generating pipe 21A is fixed to a hollow triangular prism-shaped housing 22 (see FIG. 5).

In FIG. 7, when the motor 23A is driven by a power source (not shown) and the output shaft 24A rotates, the rotation is transmitted to the vibrator (not shown) in the vibration generating pipe 21A via the flexible tube 27A, and the vibration caused by the vibrator vibrates. It is transmitted to the entire hollow triangular prism-shaped housing 22 via the generating pipe 21A.
As a result, the vibration applying device 20A applies vibration to the supplied pavement material C.

According to the paving machine 100 of the modification of the second embodiment shown in FIG. 7, since the motor 23A is not housed in the vibration generating pipe 21A of the vibration applying device 20A, the vibration generating pipe 21A is replaced with the vibration generating pipe of FIG. Compared to 21, the inner diameter can be made smaller and the whole can be made compact.
Further, since the motor 23A can be isolated from the vibration generating pipe 21A and can be disposed at an appropriate place not in the paving material C in FIG. 5, it is easy to maintain and manage the motor 23A.
Other configurations and operational effects in the modified example of the second embodiment are the same as those of the second embodiment shown in FIGS.

Next, a third embodiment of the present invention will be described with reference to FIGS.
In FIG. 8 showing the arrangement of the vibration applying device 30 in the third embodiment, the vibration applying device 30 includes a housing 32, a vibration generating plate 31 fixed to the inner wall 32A thereof, and a motor 33. It is a hollow triangular prism made of a relatively thin steel plate, and the motor 33 is fixed. The position of the hollow triangular prism-shaped housing 32 is the same as that of the housing 22 in FIG.
The hollow triangular prism-shaped housing 32 is attached to the rearmost wall 9 of the main body of the paving machine 100 via a bracket 38, and paved along the rearmost wall 9 in the width direction (direction perpendicular to the paper surface of FIG. 8). The machine 100 extends to the vicinity of both ends in the width direction.

FIG. 9 shows a vibration generating plate 31 of the vibration applying device 30.
A motor 33 is fixed to the vibration generating plate 31, and an eccentric weight 35 is attached to the output shaft 34 of the motor 33. The output shaft 34 and the eccentric weight 35 of the motor 33 are covered and protected by a cover 36. The motor 33 is provided with a power cable from a power source (not shown).
2 to 7, when the motor 33 is driven and the output shaft 34 is rotated by energization by a power source and a power cable (not shown), vibration is generated by the action of the eccentric weight 35. The vibration generating plate 31 that fixes the motor 33 vibrates due to the vibration of the motor 33, and the housing 32 that fixes the vibration generating plate 31 vibrates.

In the third embodiment of FIGS. 8 and 9, the vibration generating plate 31 and the motor 33 are arranged one by one in the hollow triangular prism-shaped housing 32, but the plurality of vibration generating plates 31 and the plurality of motors 33 are fixed. It is also possible.
Since the housing 32 of the vibration adding device 30 is attached to the rearmost wall 9 of the main body of the pavement machine 100 via the bracket 38, it can be easily attached to and detached from the pavement machine 100.
Other configurations and operational effects in the third embodiment are the same as those in the first embodiment and the second embodiment in FIGS.

It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.
For example, the vibration generating pipes 11A and 11B (first embodiment) disposed in the hollow portions of the main body pipes 12A and 12B, the vibration generating pipe 21 (second embodiment) attached to the outer surface 22A of the hollow triangular prism-shaped housing 22, and the hollow triangular shape The number of vibration generating plates 31 (third embodiment) attached to the inner wall 32A of the columnar housing 32 may be one as illustrated in the first to third embodiments, but a plurality of each may be provided.

DESCRIPTION OF SYMBOLS 1 ... Conveyor apparatus 1A ... Discharge location 2 ... Screw feeder (supply apparatus)
3 ... Screed 10, 20, 30 ... vibration applying device 11, 21, 31 ... motor 100 ... paving machine C ... paving material

Claims (4)

  A transport device that transports pavement material, a supply device that supplies the pavement material to the pavement site, a leveling device, and a vibration addition device that adds vibration to the pavement material. A paving machine, which is arranged between feeding devices and is located below.   The paving machine according to claim 1, wherein the position of the vibration adding device in the height direction is variable.   The paving machine according to claim 1, wherein the vibration applying device is detachable.   The paving material is a ready-mixed concrete material of porous concrete having a property that the fluidity of a mortar increases when vibration is applied and the viscosity increases when the vibration stops and becomes difficult to fluidize. Or pavement machine according to item 1.

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