Roller compaction machine

Abstract

To provide a roller compaction machine capable of preventing a vehicle body from becoming dirty and ensuring good visibility of rolling wheels during rolling work.SOLUTION: A pneumatic tire roller 1 includes a vehicle body 2 including a rear roller wheel 3r, and a mat brush device 40 having a brush section 43 that contacts a peripheral surface 36 of the rear roller wheel 3r. The rear roller wheel 3r has an overhanging section that overhangs from the vehicle body 2, and a fender device 60 has a shielding member 61 that is arranged around the overhanging section. The mat brush device 40 has a brush position holding mechanism that holds the brush section 43 in a first position in contact with the peripheral surface 36 of the rear roller wheel, or in a second position away from the peripheral surface 36. The fender device 60 has a shielding member holding mechanism that holds the shielding member 61 in an open position where it is retracted from the vicinity of the peripheral surface of the rear roller wheel 3r relative to the overhanging section when the brush section 43 is in the first position, and holds the shielding member 61 in a closed position near the peripheral surface of the rear roller wheel 3r relative to the overhanging section when the brush section 43 is in the second position.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a rolling machine, and more particularly to a rolling machine provided with a shielding member for mud protection. [Background technology]

[0002] When paving roads and the like with asphalt, roller compactors equipped with roller wheels have traditionally been used. Examples of such roller compactors include a pneumatic tire roller, as described in Patent Document 1. When compacting a pavement surface with the roller wheels of a pneumatic tire roller, asphalt mixture adheres to the circumferential surface of the roller. Further compaction can cause the adhesion to deteriorate the flatness and smoothness of the pavement surface, adversely affecting pavement quality. Therefore, pneumatic tire rollers, as typified by Patent Document 1, are equipped with a mat brush device including a brush unit that slides against the circumferential surface of the roller wheel to remove paving material, such as asphalt, adhering to the circumferential surface of the roller wheel, and a sprayer device that sprays water or a liquid anti-adhesion agent toward the circumferential surface of the roller wheel. These devices prevent the asphalt mixture from adhering to the circumferential surface of the roller wheel. In detail, during the rolling operation, the spraying device continuously or intermittently sprays liquid agents such as water or anti-adhesion agents onto the circumferential surface of the rolling wheel, and the brush part of the mat brush device rubs against the circumferential surface of the rolling wheel to remove any adhering matter and evenly apply the liquid agent to the circumferential surface of the rolling wheel.

[0003] In pneumatic tire rollers, the outer end face of the driving wheel at the rear of the vehicle (hereinafter referred to as the rear wheel) is located at the outermost position in the width direction of the vehicle, and the outermost rear wheel protrudes beyond the side of the tire roller's body. Compaction work begins with aligning the end face of the rear wheel with the edge of the road surface to be compacted. During this process, the operator checks the position of the end face of the rear wheel visually or using the side mirrors to ensure safety in the surrounding area, align the edge of the area to be compacted, and move the vehicle to the shoulder. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-154148 Summary of the Invention [Problem to be solved by the invention]

[0005] When a tire roller such as the one described above travels on a wet road surface, it can splash up muddy water droplets, particularly from the rear rolling wheels that protrude beyond the sides of the vehicle body, soiling the vehicle body.Since compaction work is carried out while spraying water or liquid agent from the spraying device, as described above, the road surface is sufficiently wet during compaction work, and the tire roller inevitably travels on wet road surfaces on many occasions.

[0006] Furthermore, when the tire roller is not performing compaction work, it is sent to a designated waiting area, etc. In particular, when the tire roller is sent to a designated waiting area, the tire roller travels at its maximum speed, which makes it easy for water droplets containing mud to scatter over a wide area from the rear roller.

[0007] As a result, it is currently difficult to ensure visibility of the position of the end face of the rolling wheel during rolling work while also preventing the vehicle body from becoming dirty.

[0008] The present invention has been made in consideration of these circumstances, and its purpose is to provide a compaction machine that can prevent the body from becoming dirty while ensuring good visibility of the compaction wheels during compaction work. [Means for solving the problem]

[0009] In order to achieve the above object, the rolling machine of the present invention comprises a vehicle body that is self-propelled by a rolling wheel, and a mat brush device that is provided on the vehicle body and has a brush portion that contacts the peripheral surface of the rolling wheel, and the rolling wheel has a protruding portion that protrudes from a side surface of a frame of the vehicle body in the vehicle width direction, and the rolling machine further comprises a fender device that has a shielding member that is arranged around the protruding portion of the rolling wheel, and the mat brush device has a brush portion that is arranged at a first position where it contacts the peripheral surface of the rolling wheel, or a second position where it contacts the peripheral surface of the rolling wheel. The fender device has a brush position holding mechanism that holds the shielding member in an open position retracted from the vicinity of the circumferential surface of the rolling wheel relative to the protruding portion of the rolling wheel when the brush position holding mechanism holds the brush section in the first position, and a shielding member holding mechanism that holds the shielding member in a closed position near the circumferential surface of the rolling wheel relative to the protruding portion of the rolling wheel when the brush position holding mechanism holds the brush section in the second position. [Effects of the Invention]

[0010] In the rolling compaction machine of the present invention, the shielding member can be disposed in a position where the protruding portion of the rolling wheel is not hidden and can be seen when performing rolling work, and when it is necessary to prevent water or mud from splashing, the shielding member can be disposed in a position where the protruding portion of the rolling wheel is partially covered. Thus, according to the present invention, it is possible to provide a rolling compaction machine that can achieve both prevention of dirt on the vehicle body and ensuring good visibility of the rolling wheel during rolling work. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a left side view showing a pneumatic tire roller according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing the pneumatic tire roller as viewed from the rear. [Figure 3] FIG. 2 is a plan view showing the pneumatic tire roller as viewed from the rear. [Figure 4] FIG. 10 is a partial perspective view showing the pneumatic tire roller with the shielding member raised. [Figure 5]FIG. 10 is a partial perspective view showing the pneumatic tire roller with the shielding member lowered. [Figure 6] FIG. 10 is a left side view of the pneumatic tire roller showing the operator's eye point and the imaginary line VL when the shielding member is raised. DETAILED DESCRIPTION OF THE INVENTION

[0012] Below, a description will be given of a tire roller 1 according to one embodiment of a rolling compaction machine of the present invention with reference to the drawings. Fig. 1 is a left side view showing the tire roller 1 of the embodiment, and Fig. 2 is a perspective view showing the tire roller 1 of the embodiment as viewed from behind. In the following description, the fore-and-aft direction of the vehicle body, the left-right direction (i.e., the vehicle width direction), and the up-and-down direction will be defined with reference to an operator riding on the tire roller 1.

[0013] Three rubber front rolling wheels 3f, which also serve as running wheels, are arranged in parallel in the left-right direction at the front of the car body 2 of the tire roller 1, and are supported by the car body 2 via a yoke 3 so as to be steerable. Furthermore, four rubber rear rolling wheels 3r, which also serve as running wheels, are arranged in parallel in the left-right direction at the rear of the car body 2, and are supported by the car body 2 via axles (not shown).

[0014] At approximately the center of the vehicle in the fore-and-aft direction on the vehicle body 2, on the right side, a floor 4 is formed by a floor plate, and on the left side, a stair-like step 5 is formed by cutting out the left side surface 2L of the vehicle body 2, and the operator can get on and off the vehicle body 2 via the step 5.

[0015] An operation console 8 equipped with a steering wheel 6, a forward / reverse lever, etc. is installed on the front side of the floor 4, and a driver's seat 9 is installed on the rear side. Directly above the driver's seat 9, a roof 13 is supported via a roof stand 12, and with the above configuration, a driver's cab 14 is formed on the right side of the vehicle body 2.

[0016] As described above, in a typical pneumatic tire roller, the cab 14 is located on the right side of the vehicle body 2, and therefore a step 5 is often provided for accessing the cab 14 from the left side of the vehicle body 2. Because a relatively large space is provided around this step 5, this space may be utilized to accommodate various filter devices and the like. In this embodiment, various filter devices 22 are also provided on the front side of the vehicle body 2 in the cutout portion 30 where the step 5 is formed. Examples of the filter devices 22 include a fuel filter for removing foreign matter contained in fuel supplied to the engine, a filter for removing water contained in fuel, an oil filter for removing foreign matter contained in hydraulic oil supplied to hydraulic equipment, and a water filter for removing foreign matter contained in water sprayed onto the roller wheels. By locating the various filter devices 22 near the step 5, the operator can easily check them when getting on the vehicle body 2 at the start of work and when getting off the vehicle body 2 at the end of work.

[0017] An engine room 20 equipped with an openable engine hood 19 is defined in front of the operating console 8 on the vehicle body 2, and although not shown, an HST (Hydro Static Transmission) is mounted inside the engine room 20. As the configuration of the HST is well known, only an outline will be described; it is a hydraulic system that uses hydraulic oil from a hydraulic pump driven by the engine to drive hydraulic actuators of various hydraulic devices installed in various parts of the vehicle body 2. This HST drives the rear rolling wheels 3r and steers the front rolling wheels 3f.

[0018] The operator seated in the driver's seat 9 operates the steering wheel 6, forward / reverse lever, and pedals on the floor 4 to move the tire roller 1, and during paving work, the front roller 3f and rear roller 3r roll and compact the asphalt paving material laid on the road surface.

[0019] A side mirror 10 is provided on the left side of the front portion of the vehicle body 2. An operator seated in the driver's seat 9 can view the rear rolling wheel 3r through this side mirror 10.

[0020] A water sprinkler pipe 17 including a water sprinkler nozzle and a liquid agent pipe 18 including a liquid agent spray nozzle are disposed near the top of the rear roller 3r, and are connected to a water storage tank and a liquid agent tank, respectively, provided inside the vehicle body 2, to form a water sprinkler system and a liquid agent sprayer system. During paving work, to prevent paving material and mud from adhering to the circumferential surfaces of the rear rollers 3r, water stored in the water storage tank is sprayed from the water sprinkler nozzle onto the top of the circumferential surface of each rear roller 3r, and a liquid agent (solvent) serving as an anti-adhesion agent stored in the liquid agent tank is sprayed from the liquid agent sprayer nozzle. The front rollers 3f are also separately configured with a water sprinkler system and a liquid agent sprayer similar to those for the rear rollers 3r. The water sprinkler system and liquid agent sprayer system described above prevent part of the paving material from adhering to the front rollers 3f and rear rollers 3r.

[0021] In addition, a mat brush device 40 including a brush section 43 is arranged near the front roller 3f and the rear roller 3r, which slides against the peripheral surface of the rollers to remove paving materials such as asphalt adhering to the peripheral surface of these rollers.

[0022] Here, the mat brush device 40 disposed on the side of the rear roller wheel 3r will be described in detail. As shown in Fig. 3, a pair of mat brush devices 40 are arranged on the left and right sides at the rear end of the vehicle body 2. The left mat brush device 41 and the right mat brush device 42 basically have the same structure, so only the left mat brush device 41 will be described.

[0023] This left-side mat brush device 41 comprises a pair of brush units 43, 43, a pair of holding frames 44, 44 that hold these brush units 43, 43, a connecting plate 45 that connects the pair of holding frames 44, 44, a brush position holding mechanism 54 that holds the brush units 43, 43 in a first position in contact with the circumferential surface of the rear roller wheel 3r or in a second position away from the circumferential surface of the rear roller wheel 3r, and a rotation mechanism that rotates the brush units 43, 43 between the first position and the second position, and includes an attachment arm 46 as a rotation arm that rotatably attaches the brush units 43, 43 to the vehicle body 2 via the connecting plate 45.

[0024] The brush unit 43 is not particularly limited, and a conventional brush unit may be suitably used. In this embodiment, the brush unit 43 includes a brush body (not shown) made of plant fiber bristles and a brush holder case 47 that holds the brush body. As shown in FIG. 4, the brush holder case 47 includes a plate-shaped portion 47a that is generally rectangular with rounded corners, a frame-shaped portion 47b that surrounds the outer periphery of the plate-shaped portion 47a, and a plurality of hooks 47c on the back surface of the plate-shaped portion 47a. The brush body is fitted into the area defined by the surface of the plate-shaped portion 47a and the frame-shaped portion 47b. The surface on which the brush body is located faces the peripheral surface 36 of the rear roller wheel 3r.

[0025] The holding frames 44, 44 include an outer edge frame portion 44a formed by processing a pipe with a circular cross section into a substantially rectangular shape, and an intermediate frame portion 44b connecting a pair of long sides of the outer edge frame portion 44a. The hooks 47c of the brush unit 43 described above are detachably engaged with the long sides of the outer edge frame portion 44a and the intermediate frame portion 44b.

[0026] The connecting plate 45 is a rectangular plate material, and a pair of holding frames 44, 44 are welded to both sides thereof. More specifically, a short side portion 44c of the outer edge frame portion 44a of the holding frame 44 located on the right side is welded to the right side of the connecting plate 45, and a short side portion 44c of the outer edge frame portion 44a of the holding frame 44 located on the left side is welded to the left side of the connecting plate 45. In this way, the pair of holding frames 44, 44 are connected by the connecting plate 45.

[0027] The mounting arm (rotating arm) 46 is a pair of elongated plate members welded to the surface of the connecting plate 45, and includes a left arm 46L and a right arm 46R spaced apart from each other in the left-right direction. The left arm 46L and the right arm 46R extend in a direction perpendicular to the direction in which the holding frames 44, 44 are lined up. In other words, the brush unit 43 is attached to the mounting arm (rotating arm) 46 via the connecting plate 45.

[0028] At the rear end of car body 2, there are disposed a left side hanging arm 50L that is located between the two left side rear rolling wheels 3r out of the four rear rolling wheels 3r and extends below car body 2, and a right side hanging arm 50R that is located between the two right side rear rolling wheels 3r and extends below car body 2. Left side hanging arm 50L and right side hanging arm 50R basically have the same configuration and effect, so only left side hanging arm 50L will be described.

[0029] Left side hanging arm 50L is a pair of elongated plate members, and includes first arm 51 and second arm 52 spaced apart from each other in the left-right direction. The left arm 46L and right arm 46R of mounting arm 46 are combined with first arm 51 and second arm 52, which are spaced apart from each other, so as to sandwich these first arm 51 and second arm 52. Specifically, the left arm 46L and right arm 46R of mounting arm 46 are disposed such that their distal ends are positioned at the vertical intermediate portions of first arm 51 and second arm 52, and in this state, a connecting pin 53 penetrates through the intermediate portions of first arm 51 and second arm 52 and the distal ends of left arm 46L and right arm 46R. This connecting pin 53 functions as a pivot shaft provided on first arm 51 and second arm 52 on the vehicle body 2 side. This allows the brush part 43 to rotate in a direction toward and away from the peripheral surface 36 of the rear roller wheel 3r, with the connecting pin 53 as a rotation axis and the left arm 46L and right arm 46R as rotation arms.

[0030] Furthermore, a brush position holding mechanism 54 is provided at the lower tip of the first arm 51 and the second arm 52, which can hold the brush part 43 in a first position in which it contacts the peripheral surface 36 of the rear roller wheel 3r, or in a second position in which the brush part 43 is away from the peripheral surface 36 of the rear roller wheel 3r.

[0031] This brush position holding mechanism 54 is, for example, a multi-stage engagement groove that engages with a protrusion provided at a predetermined position on the brush part 43, and is an engagement groove having a first groove that holds the brush part 43 in a first position in contact with the rear roller wheel 3r, and a second groove that holds the brush part 43 in a second position spaced apart from the rear roller wheel 3r.

[0032] When performing rolling work, the brush portion 43 must be brought into contact with the circumferential surface 36 of the rear rolling wheel 3r to prevent asphalt and other particles from adhering to the circumferential surface 36 of the rear rolling wheel 3r. In this case, the operator engages the protrusions of the brush portion 43 with the first groove to hold the brush portion 43 in the first position. On the other hand, when the tire roller 1 is being driven for transportation, if the brush portion 43 remains in contact with the circumferential surface 36 of the rear rolling wheel 3r, the brush body will wear out, so the brush portion 43 must be separated from the circumferential surface 36 of the rear rolling wheel 3r. In this case, the operator engages the protrusions of the brush portion 43 with the second groove to hold the brush portion 43 in the second position. In this way, the position of the brush portion 43 can be switched between the first position in which it contacts the circumferential surface 36 of the rear rolling wheel 3r and the second position in which it is separated from the circumferential surface 36 of the rear rolling wheel 3r, and can be held in either position.

[0033] At this time, the left arm 46L and the right arm 46R rotate about the connecting pin 53 serving as the rotation axis, and are displaced between a position corresponding to the first position and a position corresponding to the second position. In other words, the left arm 46L and the right arm 46R as rotating arms and the connecting pin 53 serving as the rotation axis constitute a rotation mechanism of the brush part 43.

[0034] In the tire roller 1 of this embodiment, as is clear from Figure 3, of the rear rolling wheels 3r, the leftmost rear rolling wheel 31r protrudes from the left side surface 2L of the body 2, and of the rear rolling wheels 3r, the rightmost rear rolling wheel 34r protrudes from the right side surface 2R of the body 2.

[0035] Here, as described above, the operator's cab 14 of the tire roller 1 is located toward the right side of the vehicle body 2. In this case, the operator can easily see the right rear rolling wheel 34r directly, but the left rear rolling wheel 31r is difficult to see directly and must be viewed through the side mirror 10 installed on the left side of the vehicle body 2. In this case, to make the left rear rolling wheel 31r easier to see through the side mirror, it is desirable to design the left rear rolling wheel 31r so that it protrudes more from the side surface of the vehicle body than the right rear rolling wheel 34r. Therefore, in this embodiment, the protrusion amount of the protruding portion 31P of the leftmost rear rolling wheel 31r is designed to be greater than the protruding amount of the protruding portion 34P of the rightmost rear rolling wheel 34r.

[0036] In this way, in a tire roller 1 in which the left rear rolling wheel 31r has a large extension, the larger the extension of the left rear rolling wheel 31r, the more water and mud will be splashed up from the left rear rolling wheel 31r, and the left side of the vehicle body 2 will tend to become more dirty.

[0037] Here, the various filter devices 22 described above have a partially transparent housing so that the state of the internal filters can be visually confirmed. If such a housing becomes dirty, it becomes difficult to check the state of the internal filters. Therefore, it is desirable to avoid contamination of the various filter devices 22. However, as described above, the various filter devices 22 are often located on the left side of the vehicle body 2, and therefore are prone to becoming dirty due to water, particularly muddy water, splashed up from the left rear rolling wheel 31r.

[0038] For the reasons described above, in the above-described tire roller 1, it is particularly necessary to take measures to prevent dirt from getting on the left side of the body 2. Therefore, it is conceivable to provide a mudguard shielding member around the protruding portion of the left rear rolling wheel 31r.

[0039] However, if a mudguard shield is provided around the protruding portion of the left rear rolling wheel 31r, it may be difficult for the operator to see the left rear rolling wheel 31r through the side mirror during the rolling work. In particular, when aligning with the road shoulder, etc., if the end face of the left rear rolling wheel 31r cannot be seen, it becomes difficult to perform the rolling work.

[0040] Therefore, in order to eliminate such a problem, in this embodiment, a fender device 60 is provided that can change the position of the shielding member 61, particularly around the protruding portion 31P of the left rear rolling wheel 31r. In other words, the fender device 60 can change the position of the shielding member 61, as shown in Figures 4 and 5, which are perspective views showing the rear of the pneumatic tire roller 1.

[0041] In more detail, the fender device 60 has a shielding member 61 that can prevent water droplets and the like from scattering, and a shielding member holding mechanism that can hold this shielding member 61 in an open position where it is retracted from the vicinity of the peripheral surface 36 of the left rear rolling wheel 31r relative to the protruding portion 31P of the left rear rolling wheel 31r, or in a closed position where it is near the peripheral surface 36 of the left rear rolling wheel 31r relative to the protruding portion 31P of the left rear rolling wheel 31r.

[0042] The shielding member holding mechanism described above includes a link mechanism 62 that supports the shielding member 61, a rotation mechanism that rotates the brush part 43, and a connecting mechanism that connects the link mechanism 62.

[0043] The shielding member 61 is made of a curved thin plate and includes a base end 61a fixed to the link mechanism 62 and a tip end 61b located on the opposite side to the base end 61a.

[0044] 4 and 5, the connecting mechanism is specifically a connecting rod 63, which includes one end 63a connected to the left arm 46L serving as a pivot arm, and the other end 63b opposite the one end 63a. The one end 63a is fixed to a position slightly closer to the brush part 43 than the tip of the left arm 46L through which the connecting pin 53 is inserted, and the other end 63b is fixed to a base end of a first link bar 64 of the link mechanism 62 (one end of the link mechanism 62), which will be described later.

[0045] The link mechanism 62 includes a first link bar 64 connected to the connecting rod 63, a second link bar 65 connected to the first link bar 64, and a third link bar 66 connected to the second link bar 65.

[0046] As described above, the first link bar 64 includes a first link base end 64a to which the other end 63b of the connecting rod 63 is fixed, a first link tip end 64b on the opposite side of the first link base end 64a, and a first link main body 64c between the first link base end 64a and the first link tip end 64b. A first link pin 67 is provided in the first link main body 64c near the first link base end 64a. The first link pin 67 extends parallel to the connecting rod 63 toward the center of the vehicle body 2 in the width direction. The first link pin 67 is rotatably supported by a bracket 55 extending downward from near the left side surface 2L of the vehicle body 2. The first link pin 67 serves as a first fulcrum f1.

[0047] The second link bar 65 includes a second link base end 65a rotatably connected to the first link tip end 64b of the first link bar 64, a second link tip end 65b on the opposite side of the second link base end 65a, and a second link main body 65c between the second link base end 65a and the second link tip end 65b. The portion of the second link base end 65a rotatably connected to the first link tip end 64b of the first link bar 64 serves as the first joint n1. In other words, the first link bar 64 and the second link bar 65 are connected at a joint that serves as the first joint n1.

[0048] The third link bar 66 includes a third link base end 66a rotatably connected to the second link tip end 65b of the second link bar 65, a third link tip end 66b on the opposite side of the third link base end 66a, and a third link main body 66c between the third link base end 66a and the third link tip end 66b. The portion of the third link base end 66a rotatably connected to the second link tip end 65b of the second link bar 65 serves as the second joint n2. In other words, the second link bar 65 and the third link bar 66 are connected at a joint portion serving as the second joint n2. Furthermore, a portion of the third link main body 66c near the third link base end 66a is rotatably connected to a side link pin 68 protruding from a predetermined position on the left side surface 2L of the vehicle body 2. This side link pin 68 serves as the second fulcrum f2. As described above, the base end 61a of the shielding member 61 is fixed to the third link tip end 66b (the other end of the link mechanism 62).

[0049] As described above, in this embodiment, the mat brush device 41 including the brush units 43, 43 is connected to the fender device 60 including the shielding member 61 and the link mechanism 62, so the position of the shielding member 61 can be changed in conjunction with the switching of the brush units 43, 43 between contact with and separation from the left rear rolling wheel 31r. Here, the interaction between the link mechanism 62 and the brush units 43, 43 will be described below.

[0050] For example, when performing a rolling operation, as shown in FIG. 4, the brush units 43, 43 of the mat brush device 40 are held in a first position in contact with the peripheral surface 36 of the rear rolling wheel 3r. At this time, the left arm 46L rotates about the connecting pin 53 and moves in the direction of arrow A. This movement of the left arm 46L moves the first link base end 64a of the first link bar 64 via the connecting rod 63. In other words, the first link bar 64 is rotated in the direction of arrow B about the first link pin 67, which serves as the first fulcrum f1. Furthermore, with this movement of the first link base end 64a, the first link tip end 64b moves in the direction of arrow C. In other words, the first node n1 moves in the direction of arrow C. When the first node n1 moves in this way, the second link bar 65 moves toward the rear of the vehicle body 2, as shown by arrow D. As a result, the third link base end 66a (second joint n2) of the third link bar 66 also moves in the direction of arrow D, and accordingly, the third link bar 66 rotates in the direction of arrow E around the side link pin 68, which serves as the second fulcrum f2. This rotation of the third link bar 66 causes the shielding member 61, which is fixed to the third link tip end 66b of the third link bar 66, to rotate in the direction of arrow F. This causes the shielding member 61 to move significantly away from the left rear rolling wheel 31r. In other words, when the brush unit 43 is held in the first position, the shielding member 61 is held in the open position where it is retracted from the vicinity of the circumferential surface 36 of the left rear rolling wheel 31r relative to the protruding portion of the left rear rolling wheel 31r.

[0051] In this way, when the shielding member 61 is in the open position far away from the left rear rolling wheel 31r, the operator can fully see the left rear rolling wheel 31r through the side mirror 10, making it easier to align the end face of the left rear rolling wheel 31r with the road shoulder during rolling work.

[0052] Next, for example, when the tire roller 1 is self-propelled for transport from the compaction site to a parking area, as shown in FIG. 5 , the brush units 43, 43 of the mat brush device 40 are held in a second position away from the circumferential surface 36 of the rear compaction wheel 3r. At this time, the left arm 46L rotates about the connecting pin 53 and moves in the direction of arrow G. This movement of the left arm 46L moves the first link base end 64a of the first link bar 64 via the connecting rod 63. In other words, the first link bar 64 is rotated in the direction of arrow H about the first link pin 67 serving as the first fulcrum f1. Furthermore, in conjunction with this movement of the first link base end 64a, the first link tip end 64b moves in the direction of arrow I. In other words, the first joint n1 moves in the direction of arrow I. When the first joint n1 moves in this manner, the second link bar 65 moves diagonally upward and forward of the vehicle body 2, as indicated by arrow J. As a result, the third link base end 66a (second joint n2) of the third link bar also moves in the direction of arrow J, and accordingly, the third link bar 66 rotates in the direction of arrow K around the side link pin 68, which serves as the second fulcrum f2. This rotation of the third link bar 66 causes the shielding member 61, which is fixed to the third link tip end 66b of the third link bar 66, to rotate in the direction of arrow L. As a result, the shielding member 61 surrounds a portion of the circumferential surface 36 of the left rear rolling wheel 31r that protrudes from the left side surface 2L of the car body 2. In other words, when the brush unit 43 is held in the second position, the shielding member 61 is held in a closed position near the circumferential surface 36 of the left rear rolling wheel 31r relative to the protruding portion of the left rear rolling wheel 31r.

[0053] In this way, when the shielding member 61 is in a closed position enclosing a portion of the circumferential surface 36 of the left rear rolling wheel 31r, it is possible to prevent muddy water droplets from scattering from the circumferential surface 36 of the rear rolling wheel 31r when the tire roller 1 is running, and thereby prevent the vehicle body 2 and various filter devices 22 arranged on the left side of the vehicle body 2 from becoming soiled.

[0054] As described above, when performing compaction work, the tire roller 1 in this embodiment is positioned in a first position where the brush portions 43, 43 are in contact with the circumferential surface 36 of the rear roller 3r to remove asphalt mixture and the like from the rollers. In this first position, it is necessary to ensure visibility of the left rear roller 31r. Therefore, in the first position, the shielding member 61 is positioned away from the left rear roller 31r so that the left rear roller 31r can be seen. On the other hand, when traveling, such as in a road, to prevent wear on the brush body, the brush portion 43 is positioned in a second position where it is spaced away from the circumferential surface 36 of the rear roller 3r. In this second position, the tire roller 1 often travels at a relatively high speed, which makes the vehicle body 2 prone to becoming dirty, and therefore, it is necessary to prevent this dirt from forming. Therefore, in the second position, the shielding member 61 is positioned to surround a portion of the left rear rolling wheel 31r and prevent water and mud from scattering.

[0055] As described above, in the tire roller 1 of this embodiment, when the body 2 is likely to become dirty, the shielding member 61 is lowered to prevent water and the like from splashing from the rear roller wheel 3r, and when it is necessary to see the rear roller wheel 3r during compaction work, the shielding member 61 can be raised to make the rear roller wheel 3r clearly visible, making it possible to prevent the body from becoming dirty while also ensuring good visibility of the roller wheel during compaction work.

[0056] Here, during the rolling compaction operation, it is preferable to move the shielding member 61 to a position that does not obstruct the operator's view of the rear rolling wheel 31r on the left side through the side mirror 10. To achieve this, as shown in FIG. 6, if a tangent line extending from the center of the side mirror 10 and tangent to the outer periphery 38 of the upper half of the outer periphery of the rear rolling wheel 31r, which partially protrudes from the left side surface 2L of the vehicle body 2, is imaginary, and this tangent line is designated as imaginary line VL, it is preferable that the position of the tip 61b of the shielding member 61 is positioned above the imaginary line VL. In other words, it is preferable that the open position of the shielding member 61 is a position in which the tip 61b of the shielding member 61 is above the tangent line (imaginary line VL) extending from the center of the side mirror 10 attached to the vehicle body 2 and tangent to the outer periphery 38 of the rear rolling wheel 3r. With the above-described configuration, when the rear roller wheel 31r is viewed from the operator's eye point EP through the side mirror 10, the shielding member 61 does not interfere with the operator's visual confirmation work, and the rear roller wheel 3r can be accurately aligned. Therefore, it is preferable to adjust the positions of the components of the link mechanism 62 (connecting rod 63, first link bar 64, second link bar 65, third link bar 66, first link pin 67, side link pin 68, etc.) so that the tip end 61b of the shielding member 61 is positioned above the above-described imaginary line VL. [Explanation of symbols]

[0057] 1 Tire roller 2. Body 3f Front rolling wheel 3r Rear rolling wheel 9 Driver's seat 10 Side mirrors 22 Filter device 31P protruding part 40 Mat Brush Device 43 Brush section 46 Mounting arm (rotating arm, rotating mechanism) 46L Left arm (rotating arm, rotating mechanism) 46R Right arm (rotating arm, rotating mechanism) 53 Connecting pin (rotating shaft, rotating mechanism) 54 Brush position retention mechanism 60 Fender device 61 Shielding member 62 Link mechanism 63 Connecting rod (connecting mechanism) VL Virtual Line

Claims

1. A vehicle body that can move by itself using rolling wheels, a mat brush device provided on the vehicle body and having a brush portion that contacts the peripheral surface of the rolling wheel; Equipped with The rolling wheel has a protruding portion that protrudes in the vehicle width direction from the frame side surface of the vehicle body. In compaction machines, a fender device having a shielding member disposed around the protruding portion of the rolling wheel, The mat brush device is a brush position holding mechanism that holds the brush unit at a first position in contact with the peripheral surface of the roller wheel or at a second position away from the peripheral surface of the roller wheel; The fender device is When the brush position holding mechanism holds the brush unit at the first position, the shielding member is held at an open position where it is retracted from the vicinity of the peripheral surface of the rolling wheel relative to the protruding portion of the rolling wheel, a shielding member holding mechanism that holds the shielding member in a closed position near the circumferential surface of the rolling wheel relative to the protruding portion of the rolling wheel when the brush position holding mechanism holds the brush unit in the second position; A compaction machine characterized by:

2. the mat brush device includes a rotation mechanism that rotates the brush unit between the first position and the second position, the shielding member holding mechanism includes a link mechanism to which the shielding member is attached, and a connecting mechanism that connects the pivot mechanism and the link mechanism, 2. The rolling machine according to claim 1, wherein the link mechanism is connected to the pivot mechanism via the connecting mechanism, and positions the shielding member in the open position when the brush unit is in the first position, and positions the shielding member in the closed position when the brush unit is in the second position.

3. The rolling machine according to claim 1, characterized in that the open position is a position in which the tip of the shielding member is above a tangent line extending from the center of the side mirror attached to the vehicle body and tangent to the outer periphery of the rolling wheel.

4. The rotation mechanism includes: a rotating shaft provided on the vehicle body; a rotating arm that is rotatably supported on the rotating shaft and to which the brush unit is attached, the connecting mechanism is a connecting rod that connects one end of the link mechanism and the pivot arm to interlock them, 3. The rolling compaction machine according to claim 2, wherein the shielding member is attached to the other end of the link mechanism.

5. a front rolling wheel disposed at the front of the vehicle body; A rear rolling wheel disposed at the rear of the vehicle body; a filter device disposed on a side of the vehicle body and between the front rolling wheel and the rear rolling wheel in the front-to-rear direction of the vehicle body; The rolling wheel having the protruding portion is the rear rolling wheel, the shielding member of the fender device is disposed on a side of the vehicle body and between the filter device and the rear rolling wheel in the front-to-rear direction of the vehicle body, 2. The rolling machine according to claim 1, wherein the fender device can hold the shielding member in the closed position or the open position relative to the rear rolling wheel.

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