Compaction machine

Abstract

The present invention provides a compaction machine that can supply liquid to the compaction wheels while suppressing unnecessary consumption and scattering of the liquid supplied to the compaction wheels. [Solution] The tire roller (compaction machine) 1 comprises a front compaction wheel (compaction wheel) 3f, a water spraying device (spraying device) 20 and a liquid spraying device (spraying device) 30 for spraying liquid supplied to the front compaction wheel 3f, a mat brush 42 that slides against the front compaction wheel 3f, and a sliding contact body 40 that includes a holding member 50 for holding the mat brush 42. The water spraying device 20 and the liquid spraying device 30 have supply units (water spray nozzle 22, liquid spray nozzle 32) that supply liquid so as to immerse the mat brush 42, and the supply units are attached to the sliding contact body 40.

Description

Technical Field

[0001] The present invention relates to a rolling machine.

Background Art

[0002] Conventionally, there has been known a technique related to a rolling machine that suppresses the adhesion of road surface materials such as asphalt to a rolling wheel by spraying a liquid onto the rolling wheel. For example, Patent Document 1 describes a rolling vehicle provided with a sliding contact body that forms a film of a liquid such as water or a liquid agent sprayed onto a tire (rolling wheel) by slidingly contacting a non-woven fabric made of artificial fibers with the tread surface of the tire.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in order to supply the liquid as evenly as possible in the width direction of the rolling wheel, it is necessary to secure a liquid supply width larger than the width of the rolling wheel, resulting in unnecessary consumption of the liquid. In addition, the liquid may scatter around, requiring the cleaning of the vehicle body.

[0005] The present invention has been made in view of such problems, and an object thereof is to provide a rolling machine capable of supplying a liquid to a rolling wheel while suppressing unnecessary consumption and scattering of the liquid supplied to the rolling wheel.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention provides a compaction machine comprising: a vehicle body; compaction wheels provided on the vehicle body; a spraying device for spraying liquid supplied to the compaction wheels; a sliding contact body including a mat brush extending along the width direction of the compaction wheels and sliding in contact with the compaction wheels; and a holding member for holding the mat brush, wherein the spraying device has a supply unit for supplying the liquid so as to immerse the mat brush, and the supply unit is attached to the sliding contact body. [Effects of the Invention]

[0007] According to the compaction machine of the present invention, it is possible to supply liquid to the compaction wheels while suppressing unnecessary consumption and scattering of the liquid supplied to the compaction wheels. [Brief explanation of the drawing]

[0008] [Figure 1] This is a side view showing a tire roller as a compaction machine according to an embodiment. [Figure 2] This is a perspective view showing the front of the tire roller vehicle. [Figure 3] This is an enlarged perspective view showing the area enclosed by the dashed line in Figure 2. [Figure 4] This is a perspective view of the sliding contact located on the far right, viewed from the front and above. [Figure 5] This is a cross-sectional view of the sliding joint along line AA in Figure 4. [Figure 6] This is a cross-sectional view of the sliding joint along line AA in Figure 4. [Figure 7] This is an explanatory diagram showing another example of a liquid supply structure to a mat brush. [Modes for carrying out the invention]

[0009] An embodiment of the present invention will be described below with reference to the drawings.

[0010] (Compaction machine: tire roller) Figure 1 is a side view showing a tire roller as a compaction machine according to an embodiment. Figure 2 is a perspective view showing the front of the tire roller 1. The tire roller 1 is a compaction machine for performing compaction work (tamping work) on a predetermined work area such as a road surface or ground. The tire roller 1 comprises a body 10, a water spraying device (spraying device) 20, a liquid spraying device (spraying device) 30, a sliding contact body 40, and a controller (control device) 60. The water spraying device 20, the liquid spraying device 30, and the controller 60 are schematically shown in Figure 1.

[0011] The vehicle body 10 consists of a steel plate main frame 11 on which multiple rubber compaction wheels 3, which also serve as driving wheels, are arranged in the width direction (left-right direction). The compaction wheels 3 include front compaction wheels 3f located at the front of the vehicle body and rear compaction wheels 3r located at the rear of the vehicle body as drive wheels. Three front compaction wheels 3f are arranged in the width direction (Figure 2). On the main frame 11 is a driver's seat 5 where the driver sits, an operation platform 6 equipped with a steering wheel for controlling the direction of travel of the tire rollers 1, a forward / reverse lever for switching between forward and reverse, and a brake pedal. An engine room is defined inside the main frame 11, and the engine and equipment related to the HST (Hydraulic Static Transmission) powered by the engine are mounted in the engine room. This HST drives the rear compaction wheels 3r, steers the front compaction wheels 3f, and operates the water spraying device 20 and the liquid spraying device 30.

[0012] A water spraying device 20 and a liquid spraying device 30 are provided near the front compaction wheel 3f and the rear compaction wheel 3r. The water spraying device 20 includes a water tank (not shown) housed inside the main frame 11, a pump for pumping the water stored in the water tank, water piping (piping, support members) 21 (Figure 2) to which the water pumped from the pump is supplied, and a water spray nozzle (nozzle, supply unit) 22 (Figure 2) for spraying water from the water piping 21. The liquid spraying device 30 includes a liquid tank (not shown) housed inside the main frame 11, a pump for pumping the liquid stored in the liquid tank, liquid piping (piping, support members) 31 (Figure 2) to which the liquid pumped from the pump is supplied, and a liquid spray nozzle (nozzle, supply unit) 32 (Figure 2) for spraying liquid from the liquid piping 31. During paving work with the tire roller 1, water from the water spraying device 20 and liquid from the liquid spraying device 30 are supplied to each compaction wheel 3, suppressing the adhesion of road surface materials such as asphalt paving material to the compaction wheels 3.

[0013] The sliding contact body 40 is provided in close proximity to the front compaction wheel 3f and the rear compaction wheel 3r, respectively. As shown in Figure 2, the sliding contact body 40 includes a mat brush 42 and a holding member 50 that holds the mat brush 42. The sliding contact body 40 removes dust, paving material, etc., adhering to the outer surface of each compaction wheel 3 by the sliding contact of the mat brush 42 with each compaction wheel 3, and also forms a film of water sprayed from the water spraying device 20 or liquid sprayed from the liquid spraying device 30. The mat brush 42 is made of a material that can be immersed in water or liquid, such as coconut fiber. The holding member 50 is made of a material such as rubber or resin.

[0014] The controller 60 is composed of, for example, a central processing unit, ROM (Read Only Memory), RAM (Random Access Memory), and non-volatile RAM. The controller 60 is mounted on the vehicle body 10. The controller 60 controls the spraying of liquid (water or liquid agent) from the water spraying device 20 and the liquid agent spraying device 30 in response to the driver's operating instructions.

[0015] (Sliding joint) Next, the sliding contact body 40 of the present embodiment will be described by taking the front side of the vehicle body 10 as an example. FIG. 3 is an enlarged perspective view showing the range surrounded by the dashed line in FIG. 2. In FIG. 3, a part of the components such as the sliding contact body 40 is shown in cross section. FIG. 4 is a perspective view of the sliding contact body 40 arranged on the rightmost side as viewed from the front and above. FIGS. 5 and 6 are cross-sectional views of the sliding contact body 40 taken along the line A-A in FIG. 4. FIG. 5 shows the state where the sliding contact body 40 contacts the front rolling pressure wheel 3f, and FIG. 6 shows the state where the sliding contact body 40 is separated from the front rolling pressure wheel 3f.

[0016] As shown in FIG. 2, the sliding contact bodies 40 are provided one by one in proximity to the three front rolling pressure wheels 3f. Each sliding contact body 40 includes a holding member 50 that holds the mat brush 42 as described above. The holding member 50 is a plate-like member that extends so as to face the outer peripheral surface of the front rolling pressure wheel 3f. The mat brush 42 is fixed to the surface of the holding member 50 on the side of the front rolling pressure wheel 3f. Adjacent holding members 50 are connected to each other by a plate-like connecting member 55 at their side surfaces. The connecting member 55 is provided with a handle that an operator grips when moving the sliding contact body 40 between a contact position P1 and a separation position P2, which will be described later.

[0017] Here, on the surface of the holding member 50 opposite to the front rolling pressure wheel 3f, a pair of first attachment portions 51 to which the water pipe 21 of the water spraying device 20 is attached and a pair of second attachment portions 52 to which the liquid agent pipe 31 of the liquid agent spraying device 30 is attached are provided. The water pipe 21 and the liquid agent pipe 31 are arranged at intervals in the circumferential direction of the front rolling pressure wheel 3f and extend so as to cover the three front rolling pressure wheels 3f along the vehicle width direction. The first attachment portions 51 are provided in a pair at intervals in the vehicle width direction at the lower end portion of the holding member 50 and sandwich the water pipe 21 by snap fit. The second attachment portions 52 are hook-shaped portions provided in a pair at intervals in the vehicle width direction at the upper end portion of the holding member 50, and the liquid agent pipe 31 is locked thereto. Thereby, the water pipe 21 and the liquid agent pipe 31 are detachably attached to each holding member 50.

[0018] Note that, as shown in FIGS. 2 and 4, the outer peripheral surfaces of the water pipe 21 and the chemical liquid pipe 31 are connected to each other by a plurality of connecting portions 80. Each connecting portion 80 is provided adjacent to the first mounting portion 51 and the second mounting portion 52, and the water pipe 21 and the chemical liquid pipe 31 are positioned in the width direction (vehicle width direction) by the contact of each connecting portion 80 with the first mounting portion 51 and the second mounting portion 52. Note that the connecting portion 80 does not connect the interiors of the water pipe 21 and the chemical liquid pipe 31 to each other.

[0019] The water pipe 21 connected to the sliding contact body 40 in this way is connected to a water tank inside the main body frame 11 via a hose 23, and a water spray nozzle 22 is provided at a position corresponding to the center in the vehicle width direction of each front pressure wheel 3f. Similarly, the chemical liquid pipe 31 is connected to a chemical liquid tank inside the main body frame 11 via a hose 33, and a chemical liquid spray nozzle 32 is provided at a position corresponding to the center in the vehicle width direction of each front pressure wheel 3f.

[0020] Each holding member 50 has an opening 54 for allowing the liquid sprayed from each nozzle to flow toward the mat brush 42. The opening 54 is formed through the holding member 50 so that the mat brush 42 is exposed toward the region on the opposite side of the front pressure wheel 3f. With this configuration, the liquid from the water spray nozzle 22 or the chemical liquid spray nozzle 32 is directly supplied to the mat brush 42 through the opening 54, and after being immersed in the mat brush 42, it is supplied to the outer peripheral surface while spreading in the width direction (vehicle width direction) of the front pressure wheel 3f. Thus, the water spray nozzle 22 and the chemical liquid spray nozzle 32 are configured as supply portions for supplying the liquid so as to immerse the mat brush 42. The water spray nozzle 22 is attached to the sliding contact body 40 via the water pipe 21, and the chemical liquid spray nozzle 32 is attached to the sliding contact body 40 via the chemical liquid pipe 31, and since they are arranged close to the sliding contact body 40, each liquid can be supplied to the mat brush 42.

[0021] Generally, the diameter and width Wf (Figure 4) of the front compaction wheel 3f change according to the ground pressure. However, the mat brush 42 in this embodiment is provided to cover the entire width of the front compaction wheel 3f, taking into account the change in the width Wf of the front compaction wheel 3f. Therefore, it is possible to supply liquid more reliably and evenly across the entire width of the front compaction wheel 3f. In other words, it is no longer necessary to change the liquid spray width in consideration of the change in the width Wf of the front compaction wheel 3f. The holding member 50 is formed to be larger than the width Wf of the front compaction wheel 3f.

[0022] The width W1 of the opening 54 should be large enough to supply sufficient liquid in the width direction of the mat brush 42, but in this embodiment, it is set to be greater than or equal to the spray width W2 of the liquid from the water spray nozzle 22 and the liquid spray nozzle 32. This suppresses the supply of liquid to the outside of the opening 54. In addition, the opening 54 has a height equal to the thickness of the holding member 50, so that the liquid supplied to the inside of the opening 54 does not easily flow out to the outside. It is preferable that the width W1 of the opening 54 is at least 1% of the width Wf of the front compaction wheel 3f. However, the opening 54 is formed to be at least less than or equal to the width Wf of the front compaction wheel 3f. This suppresses the consumption of unnecessary liquid.

[0023] (Mounting structure for sliding contacts) Next, the mounting structure of the sliding contact body 40 to the vehicle body 10 will be described. As shown in Figure 2, in addition to the main frame 11, the vehicle body 10 includes a pair of side frames 12, a front beam 13, and a yoke 14. The pair of side frames 12 are spaced apart from each other in the vehicle width direction and extend along the vehicle's longitudinal direction between adjacent front rolling wheels 3f. The front beam 13 is connected to the front ends of the pair of side frames 12 and extends in the vehicle width direction. The yoke 14 extends from the front beam 13 toward the main frame 11 and is connected to the front end of the main frame 11.

[0024] As shown in Figure 3, each side frame 12 is connected to a support member 15 that extends vertically. The bottom surface of a bracket 16, which has a U-shaped cross-section when viewed from above, is connected to the front surface of the support member 15. A rotating shaft 17 extending in the vehicle width direction is rotatably connected to the upper end of this bracket 16. The rotating shaft 17 protrudes outward in the vehicle width direction from the side surface of the bracket 16, and plate-shaped swinging members 18 are connected to both ends of it. The swinging members 18 are provided in pairs, sandwiching the bracket 16 in the vehicle width direction, and are swingable around the rotating shaft 17 relative to the bracket 16.

[0025] Then, connecting members 55 that connect adjacent sliding contacts 40 to each other are fixed to each rocking member 18, so that each sliding contact 40 is supported by the bracket 16 via the rocking member 18. In addition to the connecting members 55, the liquid piping 31 may also be fixed to the rocking member 18. Alternatively, the rocking member 18 may be extended downwards and the water piping 21 may be fixed to the rocking member 18. In that case, the water piping 21 and liquid piping 31 fixed to the rocking member 18 function as support members that support the sliding contacts 40. Furthermore, when the water piping 21 and liquid piping 31 are used as support members, the connecting members 55 may be omitted.

[0026] The sliding contact body 40 is movable between a contact position P1 (Figure 5) where the mat brush 42 is in contact with the outer circumferential surface of the front compaction wheel 3f, and a separated position P2 (Figure 6) where the mat brush 42 is separated from the outer circumferential surface of the front compaction wheel 3f, as the oscillating member 18 oscillates. A spring member (not shown) is attached between the oscillating member 18 and the bracket 16, and when the sliding contact body 40 is in the contact position P1, the spring member pulls the oscillating member 18 relative to the bracket 16, thereby holding the sliding contact body 40 in the contact position P1. Furthermore, as shown in Figure 3, a lever member 19 with a groove formed on its upper part is pivotably attached to the bracket 16, and the pair of oscillating members 18 are provided with shaft-like portions 181 extending in the vehicle width direction. When this axial portion 181 is engaged with the groove formed in the lever member 19, the swinging member 18, the lever member 19, and the bracket 16 are fixed to each other, and the sliding contact body 40 is held in the separated position P2.

[0027] Furthermore, the bracket 16 is provided with a limit switch (detection unit) 70 that detects contact with the lever member 19. The limit switch 70 and the lever member 19 are arranged to contact each other when the sliding contact body 40 is in the contact position P1, and to separate from each other when the sliding contact body 40 is in the separation position P2. The limit switch 70 outputs the detection result to the controller 60. Based on the input detection result, the controller 60 determines whether the sliding contact body 40 is in the contact position P1 or the separation position P2. The controller 60 then permits the spraying of liquid from the water spraying device 20 and the liquid spraying device 30 when the sliding contact body 40 is in the contact position P1, and prohibits the spraying of liquid from the water spraying device 20 and the liquid spraying device 30 when the sliding contact body 40 is in the separation position P2. This prevents the consumption of unnecessary liquid.

[0028] (Effects of the embodiment) As described above, the tire roller (compaction machine) 1 according to the embodiment comprises a front compaction wheel (compaction wheel) 3f, a water spraying device (spraying device) 20 and a liquid spraying device (spraying device) 30 for spraying liquid supplied to the front compaction wheel 3f, a mat brush 42 that slides against the front compaction wheel 3f, and a sliding contact body 40 that includes a holding member 50 for holding the mat brush 42. The water spraying device 20 and the liquid spraying device 30 have supply units (water spray nozzle 22, liquid spray nozzle 32) that supply liquid so as to immerse the mat brush 42, and the supply units are attached to the sliding contact body 40.

[0029] With this configuration, liquid from the supply unit (water spray nozzle 22, liquid spray nozzle 32) is supplied so that it immerses the mat brush 42. Therefore, even if the liquid spray width is not set wider than the width Wf of the front compaction wheel 3f, the liquid immersed in the mat brush 42 can be supplied so that it spreads from the mat brush 42 in the width direction of the front compaction wheel 3f. As a result, it becomes unnecessary to spray more liquid than necessary. In addition, by preventing the liquid from splashing beyond the width of the front compaction wheel 3f, the number of times the vehicle body 10 is cleaned can be reduced. Thus, according to the tire roller 1 of this embodiment, it is possible to supply liquid to the front compaction wheel 3f while suppressing unnecessary consumption and splashing of the liquid supplied to the front compaction wheel 3f.

[0030] Furthermore, the water spraying device 20 and the liquid spraying device 30 have water piping (piping) 21 and liquid piping (piping) 31 that supply liquid to the supply unit (water spray nozzle 22, liquid spray nozzle 32). As described above, at least one of the water piping 21 and the liquid piping 31 may be used as a support member that supports the holding member 50 against the vehicle body 10. With this configuration, the water piping 21 and the liquid piping 31 can be used as support members for the holding member 50, thereby reducing the number of parts.

[0031] Furthermore, the holding member 50 has an opening 54 that allows the liquid supplied from the supply unit to flow toward the mat brush 42. This configuration allows for a good supply of liquid from the water pipe 21 and the liquid agent pipe 31 to the mat brush 42.

[0032] Furthermore, the water pipe 21 is equipped with a water spray nozzle (nozzle) 22 as a supply unit that sprays water toward the opening 54, and the liquid pipe 31 is equipped with a liquid spray nozzle (nozzle) 32 that sprays liquid toward the opening 54. The width W1 of the opening 54 is greater than or equal to the spray width W2 of the liquid from the water spray nozzle 22 and the liquid spray nozzle 32. This configuration prevents the liquid from splashing outside the opening 54, thereby suppressing liquid consumption.

[0033] Furthermore, the opening 54 is less than or equal to the width Wf of the front compaction wheel 3f. This configuration prevents the liquid from being supplied to an area wider than the width Wf of the front compaction wheel 3f, thereby suppressing liquid consumption.

[0034] The tire roller 1 also includes a controller (control device) 60 that controls the water spraying device 20 and the liquid spraying device 30. The sliding contact body 40 is configured to be movable between a contact position P1 in which the mat brush 42 contacts the front compaction wheel 3f and a separation position P2 in which the mat brush 42 is away from the front compaction wheel 3f. The vehicle body 10 is provided with a limit switch (detection unit) 70 that detects whether the sliding contact body 40 is in the contact position P1 or the separation position P2. When the limit switch 70 detects that the sliding contact body 40 is in the contact position P1, the controller 60 permits spraying from the water spraying device 20 and the liquid spraying device 30, and when the limit switch 70 detects that the sliding contact body 40 is in the separation position P2, the controller 60 prohibits spraying from the water spraying device 20 and the liquid spraying device 30. This configuration makes it possible to more reliably suppress the consumption of unnecessary liquid.

[0035] The liquid supply structure to the mat brush 42 is not limited to the one described above. Figure 7 is an explanatory diagram showing another example of a liquid supply structure to the mat brush 42. In Figure 7, the front compaction wheel 3f and the mat brush 42 are shown with patterns to distinguish each component. The water pipe 21 shown in Figure 7 has a plurality of supply holes (supply parts) 25 as a supply section instead of the water spray nozzle 22. The plurality of supply holes 25 are formed on the surface of the water pipe 21 facing the holding member 50, spaced apart from each other along its extending direction (vehicle width direction, width direction of the front compaction wheel 3f). Similarly, the liquid pipe 31 shown in Figure 7 has a plurality of supply holes 35 instead of the liquid spray nozzle 32. The plurality of supply holes 35 are formed on the surface of the liquid pipe 31 facing the holding member 50, spaced apart from each other along its extending direction. Each supply hole 25, 35 supplies liquid by dripping it towards the sliding contact body 40.

[0036] Furthermore, the retaining member 50 shown in Figure 7 has two openings 541 and 542 instead of the opening 54. The openings 541 and 542 are formed to penetrate from the top surface to the bottom surface of the retaining member 50. Opening 541 extends along the water pipe 21 below the plurality of supply holes 25. Similarly, opening 542 extends along the liquid pipe 31 below the plurality of supply holes 35. With this configuration, the liquid dripped from the supply holes 25 and 35 is immersed in the mat brush 42 through the openings 541 and 542 and supplied to the front compaction wheel 3f. Thus, the liquid supply parts and openings 54 from each pipe only need to be formed to be large and wide enough to sufficiently immerse the liquid in the width direction of the mat brush 42.

[0037] This concludes the description of the embodiments, but the aspects of the present invention are not limited to these embodiments. For example, the present invention may be applied not only to the tire roller 1, but also to other compaction machines such as vibratory rollers, macadam rollers, and tamping rollers. Furthermore, although the present invention was described using the front part of the vehicle body 10 as an example in this embodiment, the present invention may also be applied to the water spraying device 20, liquid spraying device 30, and sliding contact body 40 corresponding to the rear compaction wheel 3r.

[0038] Furthermore, the supply unit may supply liquid towards the end of the mat brush 42 held by the holding member 50. In that case, the opening 54 may be omitted from the holding member 50. [Explanation of symbols]

[0039] 1. Tire roller (compaction machine) 3 Compaction wheels 3f Front compaction wheel (compaction wheel) 3r Rear compaction wheel 10 car bodies 20 Water spraying device (spraying device) 21. Water piping (pipes, support members) 22 Water spray nozzle (nozzle, supply unit) 25, 35 Multiple supply holes (supply section) 30. Liquid spraying device (spraying device) 31. Liquid piping (piping, support members) 32. Liquid spray nozzle (nozzle, supply unit) 40 sliding contact 42 Matte Brushes 50 Retaining member 54, 541, 542 aperture 60 Controllers (control devices) 70 Limit switch (detection unit) P1 contact position P2 Separate position

Claims

1. The car body and, The rolling wheels provided on the vehicle body, A spraying device for spraying the liquid supplied to the compaction wheel, A sliding contact body including a mat brush that extends along the width direction of the compaction wheel and slides against the compaction wheel, and a holding member that holds the mat brush, A compaction machine equipped with, The spraying device has a supply unit that supplies the liquid so as to immerse the mat brush, The supply unit is attached to the sliding contact body, A compaction machine characterized by the following features.

2. The spraying device has piping for supplying the liquid to the supply section, The aforementioned piping is a support member that supports the holding member with respect to the vehicle body. The compaction machine according to feature 1.

3. The compaction machine according to claim 1 or 2, characterized in that the holding member has an opening formed therein that allows the liquid supplied from the supply unit to flow toward the mat brush.

4. The spraying device has piping for supplying the liquid to the supply section, The piping is provided with a nozzle, which sprays the liquid toward the opening, as the supply unit. The width of the opening is greater than or equal to the spray width of the liquid from the nozzle. The compaction machine according to feature 3.

5. The spraying device has piping for supplying the liquid to the supply section, The piping has a plurality of supply holes formed therein, which supply the liquid toward the sliding contact body, as the supply section. The plurality of supply holes are arranged along the width direction of the compaction wheel, The opening is provided below the plurality of supply holes, The compaction machine according to feature 3.

6. The compaction machine according to claim 3, wherein the width of the opening is less than or equal to the width of the compaction wheel.

7. The device further comprises a control device for controlling the aforementioned spraying device, The sliding contact body is configured to be movable between a contact position in which the mat brush contacts the compaction wheel and a separated position in which the mat brush is away from the compaction wheel. The vehicle body is provided with a detection unit that detects whether the sliding contact body is located at the contact position or the separation position. The control device permits spraying from the spraying device when the detection unit detects that the sliding contact is in the contact position, and prohibits spraying from the spraying device when the detection unit detects that the sliding contact is in the separated position. The compaction machine according to feature 1.

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