JP4880921B2 - Rolling roller and road surface rolling method - Google Patents

Description

  The present invention relates to a method for rolling a road surface comprising a rolling roller and asphalt composite material used for rolling work on the ground or road surface.

  When rolling compaction is performed on an asphalt road having a plurality of lanes, it is common to perform the construction in units of one lane in order to allow a general vehicle to pass through the lane outside the construction. In addition, on asphalt roads having a plurality of lanes, the standard width of one lane is 3.5 m or less in Japan, etc. unless otherwise specified.

  FIG. 15 is an explanatory plan view showing a conventional method when rolling asphalt roads having a lane width of 3.5 m on one lane using a rolling roller. The rolling roller in this figure is shown as a tandem type (a type in which the front and rear rolls are arranged in a row and the heels are in the same position). For convenience, only the rolls 81 and 82 are shown, and the vehicle body and the like are omitted. An example of the structure in the roll in the vibration roller that is a type having a vibration device as the rolling roller is described in FIG. Further, Patent Document 2 and Patent Document 3 describe conventional examples of Macadam type (types having a three-wheel roll) vibration roller.

  When rolling asphalt road for one lane, the most commonly performed method in the past is the method (a). When the rolling width (roll width) of the rolls 81 and 82 is 2.1 m, For a lane width of 3.5 m, first, the vehicle is moved forward and backward in a travel lane closer to one side for a predetermined number of times, then the lane is changed, and a predetermined number of times in a travel lane closer to the other so that a rolling lap occurs. It travels back and forth.

  However, in this method, the temperature of the asphalt mixture in the other traveling lane decreases (typically, the temperature at the start of rolling is 130 degrees to 140 degrees) while traveling back and forth in one traveling lane first. Therefore, there is a problem that the compaction density is easily affected. A method of driving both lanes alternately instead of going back and forth only in one lane first is also conceivable, but this method has the problem that the number of turnovers of the vehicle for changing the lane increases. There is a problem that the trace accuracy of the driving lane is difficult to obtain.

Therefore, when the temperature drop of the asphalt mixture is particularly problematic, such as when the construction section is long, the two rolling rollers are shifted back and forth so that a rolling wrap is generated as shown in (b). The method of running in parallel is adopted.
US Patent Publication No. 4,619,552 (FIG. 2) Japanese Utility Model Publication No. 3-24647 JP 2001-342609 A

  However, in the method (b), since a plurality of rolling rollers and drivers are required, the construction cost becomes high, and since each driver runs side by side, each driver contacts the vehicles in addition to checking the road surface condition. There is also a problem that you have to drive with care.

  Needless to say, if a roll having a large rolling width is simply used to solve the above problem, for example, if a roll having a rolling width of 3.5 m or more is used, the lane can be handled in one traveling lane. However, since the rolling roller is loaded and transported on a trailer or a truck bed to the construction site, the roll rolling width dimension is naturally limited to the width dimension of the bed. Therefore, the current roll has a maximum rolling width of around 2.1 m.

  The present invention was devised to solve the above-described problems, and provides a rolling roller excellent in the efficiency of rolling work and a method for rolling road surfaces such as asphalt composites using the rolling roller. The purpose is to do.

In order to solve the above-described problems, the present invention provides a compaction roller having front and rear rolls, wherein at least one of the rolls is divided into left and right sides and arranged coaxially. Within the range where the rolling wrap allowance is generated for the other roll positioned, it is provided with roll distance variable means that can be moved in the vehicle width direction to change the distance between the left and right rolls. Each has a vibration device that vibrates the roll and a vibration motor that drives the vibration device, and is attached to the vehicle body via an elastic vibration-proof member. The unsprung mass on the roll side of the vibration-proof member. On the side, a rolling roller comprising a roll coupling mechanism that couples the left and right rolls so as to follow the movement of the left and right rolls .

According to this rolling roller, the following effects are produced.
(1) Since the rolling width dimension of all the rolls can be freely changed, the rolling roller can be widely used from small-scale rolling construction to large-scale rolling construction.
(2) The rolling roller is transferred to the vicinity of the construction site by a trailer or a truck. Trailers and trucks are limited in the width of objects that can be loaded due to legal restrictions and mechanical restrictions on traveling on their roads. Since the rolling roller of the present invention can be narrowed when transported, it is very advantageous for transporting on a trailer or truck.

Then, according to the compaction roller, the unsprung mass side, the left and right roll is a structure which forms an integral rigid by intervention of roll coupling mechanism becomes a movement of the integral with respect to the vehicle body, Patent Document 3 The rocking vibration described in paragraph [0013] and FIG. 3 is less likely to occur.

  Further, the present invention is characterized in that the roll coupling mechanism includes a coupling shaft extending in the vehicle width direction and an annular guide member through which the coupling shaft is inserted so as to be relatively movable in the axial direction. A rolling roller was used.

  According to this rolling roller, it is possible to realize an economical roll coupling mechanism that has a simple structure for changing the roll interval.

  Further, according to the present invention, each of the left and right rolls has a traveling motor in which a fixed portion is connected to the vehicle body side and an output portion is connected to the roll side to rotate the roll, and is positioned so as to sandwich the vehicle body. The rolling roller is attached to both side surfaces of the vehicle body via the vibration isolating member, and the roll coupling mechanism is provided between the fixed portions of the traveling motor.

  According to this rolling roller, it is possible to prevent interference between the vehicle body and the roll connecting mechanism existing between the left and right rolls, and a simple and robust structure can be realized.

  Further, according to the present invention, the left and right rolls can be brought into contact with each other at the inner ends, and are attached to the side frames of the vehicle body from the outer end sides via the vibration isolating member. The connecting mechanism is a rolling roller provided between the end plates of the left and right rolls.

  According to this rolling roller, a simple structure and an economical roll coupling mechanism can be realized.

  Further, the present invention comprises at least one of a scraper that scrapes off deposits adhered to the surfaces of the left and right rolls or a spraying device that sprays a liquid agent for preventing deposits from adhering to the surfaces of the left and right rolls, and the scraper Alternatively, the roller is characterized in that the spraying device is attached to a member that moves integrally with the roll by the roll distance varying means.

  According to this rolling roller, there is no relative movement between the roll and the scraper or the spraying device, and a structure for individually moving the scraper or the spraying device is not required, so that an economical rolling roller is obtained.

  Further, the present invention is characterized in that when the left and right rolls move to the outer stroke end in the vehicle width direction, the distance between the outer ends of each roll is set to 3.5 m or more. A rolling roller is used.

In an asphalt road having a plurality of lanes, the standard width dimension of one lane is 3.5 m or less unless otherwise specified. Accordingly, if the distance between the outer ends of each roll is set to be 3.5 m or more when the left and right rolls move to the stroke end on the outer side in the vehicle width direction, 3 in one traveling lane. Can handle rolling work on 5m lanes.
According to the present invention, the roll distance varying means is a rolling roller having a configuration in which the left and right rolls are synchronously moved in opposite directions.
According to this rolling roller, the operation for changing the setting of the rolling width can be performed more quickly than when the left and right rolls are individually moved.
In the present invention, the driving source of the roll distance varying means is constituted by a pair of hydraulic cylinders that expand and contract in opposite directions.
According to this rolling roller, it is possible to realize a roll distance variable means having a simple structure and economical.

  Further, the present invention is a rolling roller in which both the front and rear rolls are divided into left and right, each having the roll distance varying means, and the respective inner ends of each of the left and right rolls can be abutted against each other. In order to roll the road surface material in a spread state using a rolling roller having a structure attached to the side frame of the vehicle body from each outer end side, first, the left and right rolls before and after are rolled. A road surface characterized in that the vehicle travels a predetermined number of times along a traveling lane with the same distance from each other, and then the vehicle travels along the traveling lane with front and rear left and right rolls facing each other. The rolling method was as follows.

According to this road surface rolling method,
(A) Since the number of times the driving lane is changed by operating the steering wheel is reduced or eliminated, it is an easy construction method for driving the vehicle for the driver.
(B) Since the road surface material such as asphalt mixture in a spread state is applied first from both ends, the amount of extrusion of the road surface material to both ends by the roll can be reduced.
Etc. are produced.

ADVANTAGE OF THE INVENTION According to this invention, it becomes the rolling-rolling method of the rolling-roller and road surface which are excellent in the efficiency of rolling work, and are hard to generate rocking vibration .

  Hereinafter, the present invention will be described by dividing it into forms applied to tandem type and Macadam type rolling roller. In both embodiments, the rolling roller is described as a vibrating roller having a vibrating device that vibrates the roll.

"Form applied to tandem rolling roller (vibrating roller)"
FIG. 1 is an explanatory side view of the vibrating roller 1. The vehicle body configuration of the vibration roller 1 includes a front vehicle body 2 and a rear vehicle body 3 connected in an articulated manner via a center pin 4, and the steering of the vehicle is performed in front of the center pin 4 by a hydraulic cylinder 5 as a fulcrum. This is done by turning the vehicle body 2 and the rear vehicle body 3. The front vehicle body 2 and the rear vehicle body 3 are formed as a rectangular frame body in a plan view that supports the front roll 6 and the rear roll 7 made of iron wheels, respectively, from both sides. A driver's seat is formed at the upper front end of the rear vehicle body 3, and an upper vehicle body 8 on which an engine, a hydraulic pump, and the like (not shown) are mounted is fixed.

  In the present invention, at least one of the front roll 6 and the rear roll 7 is divided into left and right parts, and the divided left and right rolls can be moved in the vehicle width direction by a roll distance varying means described in detail later. Features. In this embodiment, both the front roll 6 and the rear roll 7 are divided into left and right. 2 to 4 are plan views of the front vehicle body 2 and the rear vehicle body 3. FIG. 2 shows a state in which the left and right rolls are abutted in both the front roll 6 and the rear roll 7, and FIG. From the state of 2, the left and right rolls are moved to the stroke end outside in the vehicle width direction only on the front roll 6 side, FIG. 4 shows the left and right rolls in the vehicle width direction outside stroke in both the front roll 6 and the rear roll 7. The state moved to the end is shown. 5 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 6 is an external perspective view showing a state in which the left and right rolls on the front roll 6 side are moved to the stroke end outside in the vehicle width direction.

  Since the basic configurations on the front roll 6 side and the rear roll 7 side are the same, the constituent members on the rear roll 7 side are omitted in FIGS. 2 to 4, and only the front roll 6 side will be described below. As the drawings to be referred to, FIGS. 3 and 6 are mainly preferable from the viewpoint of easy viewing. Although the front vehicle body 2 that supports the front roll 6 is originally a fixed frame whose shape is unchanged, in the present invention, the front vehicle body 2 is movable so that its length in the vehicle width direction is variable. It consists of a frame. A square pipe material that forms both sides of the front vehicle body 2 and extends toward the opposite side frame 9 in the vicinity of the front and rear ends of the inner side surface of each side frame 9 that is the attachment site of the front roll 6. A front frame 10 and a rear frame 11 are fixed. Each front frame 10 is inserted into a connection frame 12 made of a single square pipe material from both sides, and each rear frame 11 is connected to each connection frame 13 in which two square pipe materials are welded and fixed in a series of two front and rear. It is inserted into the pipe material. That is, the front vehicle body 2 has a structure in which the distance between the side frames 9 is variable as the front frame 10 and the rear frame 11 expand and contract with respect to the connection frames 12 and 13. The distance between the right roll 6R and the left roll 6L can be changed by moving the front roll 6 attached to the frame 9 (hereinafter, the right roll is called the right roll 6R and the left roll is called the left roll 6L) in the vehicle width direction. The roll distance varying means 14 is configured as follows. A member for articulate connection with the rear vehicle body 3 is fixedly provided at the center in the vehicle width direction on the rear surface of the connection frame 13.

  As shown in FIG. 3, between the right roll 6R and the left roll 6L that are separated from each other by the maximum distance, and the rear roll 7 (the right roll 7R and the left roll 7L) that are in contact with each other, the rolling force is applied. A lapping margin L1 occurs. That is, the roll distance varying means 14 is within a range in which the rolling lap allowance L1 occurs with respect to the rear roll 7 positioned at the center by abutting the right roll 6R and the left roll 6L in a state where the vehicle is viewed from the front. The distance between the right roll 6R and the left roll 6L can be changed by moving the vehicle while maintaining a coaxial shape in the vehicle width direction. The size of the rolling wrap margin L1 is set as appropriate, but is preferably about several tens of centimeters.

  The drive source of the roll distance varying means 14 is composed of a hydraulic cylinder, and specifically, a pair of hydraulic cylinders 15 extending and contracting opposite to each other in the left-right direction so as to move the right roll 6R and the left roll 6L in opposite directions synchronously. Consists of Each hydraulic cylinder 15 has a base end portion 15 a attached to each square pipe member of the connection frame 13, and a tip end portion 15 b of each rod attached to each rear frame 11. Specifically, the hydraulic cylinder 15 is housed inside the rear frame 11 and the connection frame 13, and as shown in FIG. 5, the pin 65 extends vertically over the inner upper surface and the inner bottom surface of the connection frame 13. A proximal end portion 15 a is attached, and a distal end portion 15 b is attached to a pin 66 that extends vertically over the inner upper surface and the inner bottom surface of the rear frame 11. Reference numeral 67 denotes a pedestal for mounting the pins 65 and 66. FIG. 8 shows an example of a hydraulic circuit that synchronizes a pair of hydraulic cylinders 15. Each hydraulic cylinder 15 is a cylinder having the same cylinder inner diameter and the same maximum stroke length. The discharge port of the hydraulic pump P is connected to the current collecting side port Sp of the current collecting valve S through a switching valve V consisting of a three-position, four-port solenoid valve. Each hydraulic cylinder 15 has a port 15pa connected to one of the oil chambers of a pair of oil chambers sandwiched between pistons connected to the flow dividing ports Sa and Sb of the flow dividing valve S, and the other oil chamber is connected to the other oil chamber. The flow paths from the communicating port 15pb merge and are connected to the oil tank T via the switching valve V.

  When the switching valve V is switched to the left position in FIG. 8, the pressure oil supplied from the hydraulic pump P flows to the current collecting side port Sp of the current collecting valve S. And the pressure oil of the same capacity flows into each port 15pa from the diversion side ports Sa and Sb, and the pressure oil flows from each port 15pb to the oil tank T via the switching valve V, so that the rod of each hydraulic cylinder 15 is moved. Stretch in synchrony. When the switching valve V is switched to the right position in FIG. 8, the pressure oil supplied from the hydraulic pump P flows to the port 15 pb of each hydraulic cylinder 15. At this time, since each port 15pa is connected to the flow dividing ports Sa and Sb of the flow collecting valve S, pressure oil of the same capacity flows through the port 15pb. Then, pressure oil of the same capacity flows from the port 15pa to the flow dividing ports Sa and Sb and from the current collecting port Sp to the oil tank T via the switching valve V, so that the rods of the hydraulic cylinders 15 are synchronized. Degenerate. When the rod is extended and the right roll 6R and the left roll 6L are separated by the maximum distance as shown in FIG. 3, and when the rod is retracted and the right roll 6R and the left roll 6L are abutted as shown in FIG. When the eight switching valves V are switched to the center position, the flow of pressure oil is cut off, and the state of each rod is maintained. Thereby, the positions of the right roll 6R and the left roll 6L in each state are maintained.

  In FIG. 3, a retaining plate 10 a is welded to the outer surface around the front end of the front frame 10, and a flange 12 a is attached to the inner surface around the end of the connection frame 12 with bolts. Thereby, the stopper plate 10a and the flange 12a abut against each other to prevent the front frame 10 from coming off from the connection frame 12, and when the right roll 6R and the left roll 6L are separated by the maximum distance, The connection frame 12 is positioned at the center in the vehicle width direction. Such a retaining mechanism is shown as an example when the front vehicle body 2 is a rectangular frame. In some cases, the structure in which the front frame 10 is not provided, that is, the front vehicle body 2 can be configured by a U-shaped frame body in a plan view including a pair of side frames 9 and a rear frame 11. In this case, of course, the retaining mechanism as described above is not necessary.

  Next, the structure around the right roll 6R and the left roll 6L will be described. The right roll 6R and the left roll 6L have built-in vibration devices 16, and a vibration motor 17 that drives the vibration device 16 and a traveling motor 18 that rotates the right roll 6R and the left roll 6L are provided correspondingly. The vibration motor 17 and the traveling motor 18 are hydraulic motors or the like. The vibration device 16, the vibration motor 17, and the traveling motor 18 are arranged in the order of the vibration device 16, the traveling motor 18, and the vibration motor 17 from the vehicle center side.

  On the inner peripheral surfaces of the right roll 6R and the left roll 6L, a disc-shaped first end plate 19 and second end plate 20 are fixed in order from the center of the vehicle so as to be separated from each other. A hollow cylindrical exciter case 21 is fixed. FIG. 7 is an enlarged explanatory view around the vibration device 16, and will be described with reference to this figure. Inside the vibrator case 21, bearings 22, 22 attached to the first end plate 19 and the second end plate 20 are interposed. Thus, the eccentric weight 23 constituting the vibration device 16 and the excitation shaft 24 fixed with the eccentric weight 23 are rotatably supported so as to be coaxial with each roll.

  In the present embodiment, the traveling motor 18 is a motor having a hollow and non-axial structure having a through-hole 18d. As an example, a multi-stroke radial piston motor is used. This radial piston motor is a well-known hydraulic motor that is thin and generates low speed and high torque, and has a structure in which an output portion 18b is rotatably supported via a bearing 18c in a fixed portion 18a forming a casing. . Although FIG. 7 shows the radial piston motor in a simplified manner, a more specific structure is described in Patent Document 3. The traveling motor 18 is disposed so that the air core of the through hole 18d is concentric with the rotating shaft core of the roll, the output portion 18b is fastened and fixed to the second end plate 20 by the bolt 25, and the fixing portion 18a. Are fastened and fixed to the motor mounting plate 27 by bolts 26. As shown in FIG. 3, the motor attachment plate 27 is a member that is attached to the side frame 9 via a bracket 28 and an anti-vibration rubber 29. As shown in FIG. 7, one end of the vibration shaft 24 protrudes from the second end plate 20 and is inserted into the through hole 18 d of the traveling motor 18, and the output of the vibration motor 17 is coupled via the coupling 30. It is connected to the shaft 17a. The body portion of the vibration motor 17 is fastened and fixed by a bolt 31 to a bracket fixed to the motor mounting plate 27.

  As described above, when pressure oil flows into the traveling motor 18, the output unit 18b rotates with respect to the fixed unit 18a, and the second end plate 20 fixed to the output unit 18b rotates to rotate the roll. When pressure oil flows through the vibration motor 17, the vibration shaft 24 connected to the output shaft 17a via the coupling 30 rotates, and the roll vibrates. In the present embodiment, the vibration device 16 is a uniaxial eccentric type, but may be a multiaxial eccentric type. Alternatively, a variable amplitude vibration device 16 having a movable eccentric weight that is movable with respect to the excitation shaft 24 may be used.

  In the structure up to the above description, in FIG. 3, the right roll 6R and the left roll 6L are mounted on the side frames 9 in a so-called cantilevered manner. Even if there is no anti-vibration rubber 29 in the structure, the right roll 6R and the left roll 6L are difficult to maintain the horizontal state due to the reaction force from the road surface. Further, in the case of the vibration roller, vibration (generally referred to as rocking vibration) that the roll swings easily occurs. When the right roll 6R and the left roll 6L are vibrated simultaneously by the vibration device 16, the vibration is transmitted to the front vehicle body 2 from both sides regardless of the presence of the vibration isolating rubber 29, which is the operation on the rear vehicle body 3 side. There is a risk of transmission as a large vibration to the seat.

  In this embodiment, the right roll 6R and the left roll 6L are moved by the right roll 6R and the left roll 6L on the unsprung mass side on the roll side from the vibration proof rubber 29 that is an elastic vibration proof member. It is set as the structure which provided the roll connection mechanism 32 connected so that tracking was possible. In the present embodiment, the mass on the frame main body side is the “sprung mass” and the mass on the roll side is the “unsprung mass” with respect to the antivibration rubber 29. With the above configuration, the movement of the right roll 6R and the left roll 6L with respect to the front vehicle body 2 is integrated. The roll connecting mechanism 32 includes a connecting shaft 33 extending in the vehicle width direction and an annular guide member 34 through which the connecting shaft 33 is inserted so as to be relatively movable in the axial direction. The structure spanning between each 1st end plate 19 and 2nd end plate 20 of the roll 6L is mentioned. In the right roll 6R and the left roll 6L, both ends are opened between the first end plate 19 and the second end plate 20 on the outside of each vibrator case 21 so as to face each other at 180 degrees across the center axis of the roll. The cylindrical (annular) guide members 34 are fixed so as to be spanned as a pair. Openings at both ends of the guide member 34 protrude beyond the first end plate 19 and the second end plate 20 and face the outside of each roll. One end of the connecting shaft 33 is inserted through the guide member 34 on the right roll 6R side, and the other end is inserted through the guide member 34 on the left roll 6L side. Of course, it is important that the connecting shaft 33 and the guide member 34 are rigidly connected, and the connecting shaft 33 slides in the axial direction (vehicle width direction) without rattling with respect to the guide member 34. The number of sets of the connecting shaft 33 and the guide members 34, 34 is shown as two sets in the drawing, but may be three or more sets as appropriate.

  A retaining mechanism is provided as necessary so that the distal end of the connecting shaft 33 does not come out of the guide member 34 when the right roll 6R and the left roll 6L are separated from each other by the maximum distance. In the figure, a sliding collar 35 is fitted and fixed to the inner peripheral portion of the guide member 34 facing the center of the vehicle, and the end of the connecting shaft 33 is a disk member having a diameter larger than the shaft diameter. A cap 36 is attached, and the edge of the end cap 36 and the end of the collar 35 are brought into contact with each other in the guide member 34 to prevent the connecting shaft 33 from coming off. In the present embodiment, the positions where the end caps 36 at both ends abut each collar 35 are the positions where the right roll 6R and the left roll 6L are separated from each other by the maximum distance, that is, the vehicle widths of the right roll 6R and the left roll 6L. This is the stroke end outside the direction. The stroke end on the inner side in the vehicle width direction is a position where the right roll 6R and the left roll 6L are associated with each other.

As described above, at least one of the front roll 6 and the rear roll 7 is divided into left and right sides and arranged coaxially, and the right roll 6R and the left roll 6L are arranged on the rear roll 7 located in the center when viewed from the front. On the other hand, if the rolling roller is provided with a roll distance variable means 14 that can be moved in the vehicle width direction and change the distance between the right roll 6R and the left roll 6L within the range where the rolling wrap margin L1 occurs, The following effects are produced.
(1) Since the rolling width dimension of all the rolls can be freely changed, the rolling roller can be widely used from small-scale rolling construction to large-scale rolling construction.
(2) The rolling roller is transferred to the vicinity of the construction site by a trailer or a truck. Trailers and trucks are limited in the width of objects that can be loaded due to legal restrictions and mechanical restrictions on traveling on their roads. Since the rolling roller of the present invention can be narrowed when transported, it is very advantageous for transporting on a trailer or truck.

In addition, the following rolling method can be constructed when rolling a road surface material such as asphalt mixture in a spread state.
"Method of rolling in Fig. 9 (a)"
FIGS. 9 (a) and 9 (b) both illustrate the case where the asphalt road having a lane width of 3.5 m shown in FIG. 15, for example, is pressed for one lane, and the compressed vehicle according to the present invention is illustrated. For convenience, only the center pin 4, the front roll 6, and the rear roll 7 are shown, and the vehicle body is omitted. 9A, only the front roll 6 which is one of the front and rear rolls is moved to the stroke end outside in the vehicle width direction, and the rear roll 7 which is the other roll is positioned at the center. It is a method of using it in the state of letting it. Therefore, as long as this method is used, it is not always necessary to divide the rear roll 7, and it is sufficient to divide at least one of the front and rear rolls. According to this method, since the rolling width dimension by all the rolls becomes large, it is not necessary to change the traveling lane of the rolling roller as compared with the conventional case shown in FIG. That is, in the case of this figure, the distance dimension L2 between the outer ends of the right roll 6R and the left roll 6L is set to be at least 3.5 m or more when moving to the stroke end outside in the vehicle width direction. Then, it is possible to perform the rolling compaction in one traveling lane for one lane section with a lane width of 3.5 m. In consideration of the overrun lap margin L3 from the lane, the distance dimension L2 is preferably set to 3.7 m or more.

The effects of the rolling method shown in FIG. 9A include the following.
(A) Since the number of times the driving lane is changed by operating the steering wheel is reduced or eliminated, it is an easy construction method for driving the vehicle for the driver.

"Method of rolling in Fig. 9 (b)"
The rolling method shown in FIG. 9B is limited to a rolling roller in which both front and rear rolls are divided into left and right. In the rolling method shown in FIG. 9B, first, as shown in the upper part, the rolling roller is caused to travel a predetermined number of times along the traveling lane with the front and rear left and right rolls separated from each other by the same distance. As shown in the lower part, this is a method of running the rolling roller along the running lane in a state where the front and rear left and right rolls are in contact with each other. In addition to the effect (a), this rolling method
(B) Since the road surface material such as asphalt mixture in a spread state is applied first from both ends, the amount of extrusion of the road surface material to both ends by the roll can be reduced.
The effect is played.

  Next, in FIG. 3, as in the present embodiment, if the roll distance variable means 14 is configured to move the right roll 6 </ b> R and the left roll 6 </ b> L in the opposite directions synchronously, compared to the case where the rolls are individually moved. The operation to change the rolling width setting can be performed quickly.

  In addition, if the drive source of the roll distance varying means 14 is composed of a pair of hydraulic cylinders 15 that expand and contract in opposite directions to each other, the roll distance varying means 14 having a simple structure can be realized.

  Further, the right roll 6R and the left roll 6L have the vibration device 16 and the vibration motor 17, respectively, and the vehicle body (the front vehicle body 2, the rear vehicle body) via an elastic vibration isolation member (antivibration rubber 29). 3) When the vibration roller is structured to be attached to 3), the right roll 6R and the left roll 6L are connected to the right roll 6R on the unsprung mass side of the roll side (right roll 6R, left roll 6L side) from the anti-vibration rubber 29. If the structure is provided with a roll coupling mechanism 32 that couples the left roll 6L so as to follow the movement of the left roll 6L, the right roll 6R and the left roll 6L have an integral rigid body. For example, the right roll 6R and the left roll 6L Even if they are separated from each other, both can be regarded as a single wide roll in which the intermediate portion has been removed, and rocking vibration is less likely to occur.

  Furthermore, if the roll coupling mechanism 32 is configured to include a coupling shaft 33 extending in the vehicle width direction and an annular guide member 34 through which the coupling shaft 33 is inserted so as to be relatively movable in the axial direction, the structure is as follows. A simple and economical roll coupling mechanism 32 can be realized. A structure in which the connecting shaft 33 is fixed on the first end plate 19 and the second end plate 20 and the guide member 34 is loosely fitted to the connecting shaft 33 is also possible.

  Moreover, if the roll coupling mechanism 32 is provided between the first end plate 19 and the second end plate 20 of the right roll 6R and the left roll 6L, the roll coupling mechanism 32 having a simpler structure and more economical can be realized.

"Form applied to Macadam-type rolling roller (vibrating roller)"
FIGS. 10A and 10B are a side explanatory view and a front explanatory view of the vibration roller 41. The vehicle body structure of the vibration roller 41 includes a front vehicle body 42 and a rear vehicle body 43 connected in an articulated manner via a center pin 44, and the steering of the vehicle is performed with a center pin 44 as a fulcrum by a hydraulic cylinder (not shown). This is done by turning the front vehicle body 42 and the rear vehicle body 43. In the front body 42, a driver's seat is formed above the rear, and an engine, a hydraulic pump, and the like are mounted below the rear.

  The front roll 46 is disposed as a pair of left and right with the front body 42 interposed therebetween. The pair of left and right front rolls 46 constitutes a roll “divided into left and right and arranged coaxially” described in the claims. The rear vehicle body 43 is formed of a U-shaped frame body in plan view, and a rear roll 47 located in the center is pivotally mounted on the rear vehicle body 43 in a state of supporting both ends in a state where the vibration roller 41 is viewed from the front. . A known vibration device and vibration motor are built in the rear roll 47. In addition, in this embodiment, since the back roll 47 is a conventional roll which is not divided | segmented, description of the back roll 47 is abbreviate | omitted below.

  FIG. 11 is a plan view of the front vehicle body 42 and the rear vehicle body 43. A right front roll 46 (hereinafter referred to as a right roll 46R) and a left front roll 46 (hereinafter referred to as a left roll 46L) are arranged in a vehicle. The case where it is located at the stroke end on the inner side in the width direction (that is, the roll position in the conventional Macadam vibration roller) is shown. FIG. 12 is a view showing the mounting structure of the hydraulic cylinder 56 with respect to FIG. 11, and the rear vehicle body 43 side is omitted. 13 is an explanatory plan view when the right roll 46R and the left roll 46L are moved to the outer stroke end in the vehicle width direction, and FIG. 14 is an external perspective view of the same. In FIG. 14, the front vehicle body 42 is indicated by a virtual line.

  The drawings referred to in the following description are mainly those shown in FIGS. 13 and 14 from the viewpoint of visibility. A support plate 49 is attached to each side surface of the front vehicle body 42 via a plurality of anti-vibration rubbers 48 so as to be parallel to the side surface of the front vehicle body 42. A pair of cylindrical members 50 are fixed to the respective support plates 49 at positions that face each other 180 degrees across the rotation shaft of the front roll 46 in a side view. A motor attachment plate 51 that is parallel to the support plate 49 is disposed outside the support plates 49 in the vehicle width direction. A pair of guide shafts 52 projecting horizontally toward the support plate 49 side are fixed to the motor mounting plate 51. When the pair of guide shafts 52 are inserted into the pair of cylindrical members 50 and moved in the vehicle width direction, the motor mounting plate 51 is attached to the support plate 49 so as to be movable in the vehicle width direction. ing. An end cap 53, which is a disk member having a diameter larger than the shaft diameter of the guide shaft 52, is attached to the end of each guide shaft 52 closer to the vehicle inner side in order to prevent the guide shaft 52 from coming off from the cylindrical member 50. . Further, a through hole for escaping the guide shaft 52 is formed in the side surface of the front vehicle body 42.

  End plates 54 are fixed to the inner peripheral surfaces of the right roll 46R and the left roll 46L, and a sealed cylindrical exciter case 55 with a built-in vibration device is attached to the end plate 54 and a rotation axis of each roll. It is attached coaxially. Although a vibration device is omitted in the figure, a uniaxial eccentric type or multi-axis eccentric type vibration mechanism described in the form of the tandem type vibration roller is applied. An output portion of the traveling motor 18 having the same hollow structure as that described in the form of the tandem vibration roller is attached to the side surface of the vibration generator case 55 closer to the vehicle inner side. And the fixed part of the motor 18 for driving | running | working is attached to the surface near the vehicle outer side of the said motor attachment board 51. FIG. A vibration motor 17 is attached to the surface of the motor mounting plate 51 closer to the inside of the vehicle, and its output shaft is connected to the vibration shaft of the vibration device in the through hole 18d (FIG. 7) of the traveling motor 18. . The support plate 49 is provided with a through hole 49a (FIG. 14) for escaping the vibration motor 17. A through hole for escaping the vibration motor 17 is also formed in the side surface of the front body 42. With the above structure, when pressure oil flows to the traveling motor 18, the exciter case 55 fixed to the output portion of the traveling motor 18 rotates, and the right roll 46R and the left roll 46L travel. When pressure oil flows into the vibration motor 17, the excitation shaft connected to the output shaft rotates, and the right roll 46R and the left roll 46L vibrate.

  As can be seen from the above description, in the present embodiment, the motor mounting plate 51 to which the right roll 46R and the left roll 46L are attached via the traveling motor 18 is moved in the vehicle width direction with respect to the support plate 49. However, “the roll distance variable means 14 that can change the distance between the right roll 46R and the left roll 46L by moving the right roll 46R and the left roll 46L in the vehicle width direction” is configured. Of course, the right roll 46R and the left roll 46L move while maintaining the same coaxial shape. Even when the right roll 46R and the left roll 46L move to the stroke end on the outer side in the vehicle width direction, a rolling wrap margin is generated between the both rolls and the rear roll 47 (FIG. 11). .

  Also in this embodiment, the drive source of the roll distance varying means 14 is a hydraulic cylinder, and as shown in FIG. 12, the right roll 46R and the left roll 46L are opposite to each other in the left-right direction in order to move the right roll 46R and the left roll 46L synchronously in opposite directions. It is comprised from a pair of hydraulic cylinder 56 which expands-contracts. Brackets 57 are fixedly provided on the inner surfaces of both side surfaces of the front vehicle body 42 at positions shifted vertically when viewed from the side (only one side is shown in FIG. 12). On the other hand, brackets 58 are fixed to the side surfaces of the motor mounting plates 51 closer to the outside of the vehicle. Each hydraulic cylinder 56 has a base end portion 56a attached to the bracket 57 and a tip end portion 56b of each rod attached to the bracket. By being attached to 58, it is arranged horizontally along the vehicle width direction. Therefore, when the rod expands and contracts, the motor mounting plate 51 moves in the vehicle width direction via the bracket 58. Note that through holes for escaping the hydraulic cylinder 56 are formed on both side surfaces of the front vehicle body 42, and the supporting plate 49 and the motor mounting plate 51 are also provided for escaping the hydraulic cylinder 56, as shown in FIG. Through-holes 49b and 51a are formed.

  The hydraulic circuit that synchronizes the pair of hydraulic cylinders 56 can be the same as that described with reference to FIG.

  Next, in FIG. 13, the roll coupling mechanism 32 that is effective against the problem of rocking vibration described in the above embodiment will be described. Also in the present embodiment, the right roll 46R and the left roll 46L are moved to move the right roll 46R and the left roll 46L on the unsprung mass side on the roll side (right roll 46R, left roll 46L side) from the anti-vibration rubber 48. The structure includes a roll coupling mechanism 32 coupled so as to be able to follow.

  Similarly to the case of the above embodiment, the roll connecting mechanism 32 of the present embodiment also has a connecting shaft 59 extending in the vehicle width direction, and an annular shape (cylindrical shape) through which the connecting shaft 59 is inserted so as to be relatively movable in the axial direction. The guide member 60 is included. However, while the above embodiment has a structure in which the roll coupling mechanism 32 is provided between the end plates of each roll, the present embodiment specifically provides the roll coupling mechanism 32 between the fixed portions of the traveling motor 18. Are different from each other in that they are provided between the motor mounting plates 51 to which the fixed portions of the traveling motor 18 are mounted. That is, in the case of the above-described embodiment, there is no vehicle body between the left and right rolls. Therefore, there is no problem even if the roll coupling mechanism 32 spanned between the end plates rotates together with the rolls. In the case of the embodiment, the vehicle body (the front vehicle body 42) exists between the left and right rolls. Therefore, it is substantially difficult to rotate the roll coupling mechanism 32 together with the rolls.

  At the front and rear ends of the motor mounting plate 51, through-holes are formed at positions that are opposed to each other by 180 degrees across the center axis of the roll, and the motor mounting plate 51 is located closer to the inside of the vehicle so as to communicate with each through-hole. A cylindrical guide member 60 having both ends opened is fixed on the side surface. One end of the connecting shaft 59 is inserted into the guide member 60 on the right roll 46R side, and the other end is inserted into the guide member 60 on the left roll 46L side. Of course, it is important that the connecting shaft 59 and the guide member 60 are rigidly connected, and the connecting shaft 59 slides in the axial direction (vehicle width direction) without rattling with respect to the guide member 60. According to the above structure, the roll coupling mechanism 32 is provided between the fixed portions of the traveling motor 18 that does not rotate with respect to the front vehicle body 42 (specifically, the motor attachment in which the fixed portion of the traveling motor 18 is attached). (Between the plates 51), it does not rotate integrally with the roll. Note that through holes for escaping the roll coupling mechanism 32 are formed on both side surfaces of the front vehicle body 42.

  When the right roll 46R and the left roll 46L are separated from each other by a maximum distance (when moving to the stroke end outside in the vehicle width direction), a retaining mechanism is provided as necessary so that the connecting shaft 59 does not come out of the guide member 60. . In the figure, end caps 61, which are disk members having a diameter larger than the shaft diameter, are attached to both ends of the connecting shaft 59, and the edge of the end cap 61 is brought into contact with the side surface of the motor mounting plate 51 closer to the vehicle outer side. In this way, the connection shaft 59 is prevented from coming off. In the present embodiment, the position where the end caps 61 at both ends abut on the side surfaces of the motor mounting plates 51 closer to the vehicle outer side is the position where the right roll 46R and the left roll 46L are separated by the maximum distance, that is, the right roll. 46R and the left roll 46L are stroke ends on the outer side in the vehicle width direction.

  In addition, a cylindrical positioning guide member 62 is externally fitted and fixed to the center of the connecting shaft 59 in the vehicle width direction. When the right roll 46R and the left roll 46L have finished moving inward in the vehicle width direction, the left and right guides The end surface of the member 60 comes into contact with both end surfaces of the positioning guide member 62 (state shown in FIG. 11). By the intervention of the positioning guide member 62, the connecting shaft 59 is positioned so as to be symmetrical with respect to the vehicle center. Therefore, the end portion (end cap 61) of the connecting shaft 59 does not interfere with the end plate 54. The position where the end surfaces of the left and right guide members 60 abut on both end surfaces of the positioning guide member 62 is the stroke end on the inner side in the vehicle width direction of the right roll 46R and the left roll 46L.

  As described above, even in the Macadam-type rolling roller, the right roll 46R and the left roll 46L are within the range where the rolling roll wrap margin is generated with respect to the rear roll 47 (FIG. 11 and the like) positioned in the center when viewed from the front. Thus, the rolling roller provided with the roll distance varying means 14 that can be moved in the vehicle width direction to change the distance between the right roll 46R and the left roll 46L is described in the above embodiment (1), ( The effect of 2) will be achieved. Further, the rolling method shown in FIG. 9A is also possible.

  Further, if the right roll 46R and the left roll 46L are synchronously moved in opposite directions as the roll distance varying means 14, the operation for changing the setting of the rolling width is quicker than in the case of individually moving. Will be able to do it.

  If the drive source of the roll distance varying means 14 is composed of a pair of hydraulic cylinders 56 that expand and contract in opposite directions, the roll distance varying means 14 can be realized with a simple structure and economical.

  Further, the right roll 46R and the left roll 46L each have the vibration device 16 and the vibration motor 17, and are attached to the vehicle body (front vehicle body 42) via elastic vibration-proof members (vibration-proof rubber 48). In the case of the vibration roller having the structure, the right roll 46R and the left roll 46L are connected to the right roll 46R and the left roll 46L on the unsprung mass side on the roll side (right roll 46R and left roll 46L side) from the anti-vibration rubber 48. If the roll connecting mechanism 32 is connected to follow the movement of the right roll 46R and the left roll 46L, the right roll 46R and the left roll 46L form an integral rigid body. Even when moving to the stroke end closer to the outside, both can be regarded as a single wide roll with only the intermediate part removed, causing the occurrence of rocking vibration. It can be reduced.

  Further, if the roll connecting mechanism 32 includes a connecting shaft 59 extending in the vehicle width direction and an annular guide member 60 through which the connecting shaft 59 is inserted so as to be relatively movable in the axial direction, the structure can be obtained. A simple and economical roll coupling mechanism 32 can be realized.

  In addition, when the right roll 46R and the left roll 46L are vibration rollers arranged with the front vehicle body 42 interposed therebetween as in the present embodiment, the traveling motor that attaches the roll coupling mechanism 32 to the front vehicle body 42 side. With the configuration provided between the 18 fixed portions, the roll coupling mechanism 32 does not rotate integrally with the right roll 46R and the left roll 46L, and does not interfere with the front vehicle body 42.

  The case where the present invention is applied to two oscillating rollers of a tandem type and a Macadam type has been described above. A scraper (for example, reference numeral 71 shown in FIG. 1) for scraping off the adhered matter adhered to the surfaces of the left and right rolls by the rolling roller, or a spraying device for spraying a liquid agent for preventing the adhesion of adhered matter on the surfaces of the left and right rolls. In the case where at least one of (for example, reference numeral 72 shown in FIG. 1) is provided, the scraper 71 or the spraying device 72 is attached to a member (for example, the side frame 9 or the like) that moves integrally with the roll by the roll distance varying means 14. Then, there is no relative movement between the roll and the scraper 71 or the spraying device 72, and a structure for individually moving the scraper 71 or the spraying device 72 is not required, so that an economical rolling roller is obtained.

It is side surface explanatory drawing of a vibration roller. It is the figure which planarly viewed the front part vehicle body and the rear part vehicle body, Comprising: The state which matched the right and left roll in both the front roll and the rear roll is shown. It is the figure which planarly viewed the front vehicle body and the rear vehicle body, and shows a state in which the left and right rolls are moved to the stroke end outside in the vehicle width direction in the front roll, and the left and right rolls are abutted in the rear roll. It is the figure which planarly viewed the front vehicle body and the rear vehicle body, and shows a state where the left and right rolls are moved to the stroke end outside in the vehicle width direction in both the front roll and the rear roll. It is AA sectional drawing in FIG. It is an external appearance perspective view which shows the state which moved the roll on either side of the front roll side to the stroke end of the vehicle width direction outer side. It is an expansion explanatory view around a vibration device. It is a hydraulic circuit diagram regarding the hydraulic cylinder which is a drive source of a roll distance variable means. (A), (b) is an explanatory plan view of the asphalt road surface rolling method using the rolling roller according to the present invention. (A), (b) is side explanatory drawing and front explanatory drawing of a vibration roller, respectively. It is the figure which planarly viewed the front vehicle body and the rear vehicle body, and shows a state where the left and right rolls are positioned at the stroke end inside the vehicle width direction. It is plane explanatory drawing which shows the attachment structure of a hydraulic cylinder. It is plane explanatory drawing of the state which moved the right and left roll to the stroke end of the vehicle width direction outer side. It is an external appearance perspective view of the state which moved the right-and-left roll to the stroke end of the vehicle width direction outer side. It is plane explanatory drawing which showed the conventional method in the case of rolling-comprising asphalt road with a lane width of 3.5 m about one lane using a rolling roller.

Explanation of symbols

1, 41 Vibration roller (rolling roller)
2,42 Front car body
3, 43 Rear body (body)
6, 46 Front roll 6R, 46R Right roll 6L, 46L Left roll 7, 47 Rear roll 14 Roll distance variable means 15, 56 Hydraulic cylinder 16 Vibration device 17 Vibration motor 18 Traveling motor 19 First end plate 20 Second end plate 29 48 Anti-vibration rubber (anti-vibration member)
32 Roll connection mechanism 33, 59 Connection shaft 34, 60 Guide member 71 Scraper 72 Dispersing device

Claims (9)

In the rolling roller with rolls at the front and back,
At least one roll is divided into left and right and arranged coaxially,
A roll capable of changing the distance between the left and right rolls by moving the left and right rolls in the vehicle width direction within a range where a rolling wrap margin is generated with respect to the other roll located in the center when viewed from the front. With variable distance means ,
Each of the left and right rolls has a vibration device that vibrates the rolls and a vibration motor that drives the vibration device, and is attached to the vehicle body via an elastic vibration-proof member,
A rolling roller comprising a roll coupling mechanism that couples the left and right rolls to follow the movement of the left and right rolls on the unsprung mass side of the roll side from the vibration isolation member . The roll coupling mechanism, according to claim 1, wherein the coupling shaft that extends in the vehicle width direction, that the coupling shaft is composed of an annular guide member for inserting relatively movably in the axial direction Rolling roller. Each of the left and right rolls has a traveling motor that has a fixed part connected to the vehicle body side and an output part connected to the roll side to rotate the roll, and is positioned so as to sandwich the vehicle body. Is attached via the vibration isolating member,
The roller according to claim 1 or 2 , wherein the roll coupling mechanism is provided between fixed portions of the traveling motor. The left and right rolls are capable of abutting each inner end, and are attached to the side frame of the vehicle body from the outer end side via the vibration isolating member,
The roller according to claim 1 or 2 , wherein the roll coupling mechanism is provided across the end plates of the left and right rolls. It comprises at least one of a scraper that scrapes off deposits adhered to the surfaces of the left and right rolls or a spraying device that sprays a liquid agent for preventing adhesion of deposits on the surfaces of the left and right rolls,
The rolling roller according to any one of claims 1 to 4 , wherein the scraper or the spraying device is attached to a member that moves integrally with the roll by the roll distance varying means. The distance between the outer ends of each roll is set to be 3.5 m or more when the left and right rolls move to the outer stroke end in the vehicle width direction. compacting roller according to any one of claims 5. The rolling roller according to any one of claims 1 to 6, wherein the roll distance varying means is configured to move the left and right rolls synchronously in opposite directions. The roller according to any one of claims 1 to 7, wherein a drive source of the roll distance varying means is composed of a pair of hydraulic cylinders that expand and contract in opposite directions. The rolling roller according to claim 1, wherein both the front and rear rolls are divided into right and left, and each of which includes the roll distance varying means, and the inner ends of each of the left and right rolls can be abutted against each other. In order to roll the road surface material in a spread state using a rolling roller having a structure attached to the side frame of the vehicle body from each outer end side,
First, run the vehicle a predetermined number of times along the driving lane with the front and rear left and right rolls separated by the same distance from each other,
Next, the road surface rolling method characterized in that the vehicle is caused to travel along the travel lane in a state where the front and rear left and right rolls face each other.

Images