JP2010043495A - Rolling compaction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain an excellent environment while restraining an antifreezing fluid from being discharged to the outside. <P>SOLUTION: An antifreezing fluid recovery apparatus 33 comprising a front side antifreezing fluid receiving implement 34 connected to each nozzle port 21 of a front side sprinkling nozzle 19, a rear side antifreezing fluid receiving implement 35 connected to each nozzle port 24 of a rear side sprinkling nozzle 22, and an antifreezing fluid recovery tube 36 connecting the front and rear antifreezing fluid receiving implements 34, 35 to an antifreezing fluid tank 25, is mounted between the front and rear side sprinkling nozzles 19, 22 and the antifreezing fluid tank 25. The antifreezing fluid filled in a sprinkling passage 26, the front side sprinkling nozzle 19 and the rear side sprinkling nozzle 22 can thereby be recovered into the antifreezing fluid tank 25 by a sprinkling pump 27 through the antifreezing fluid recovery apparatus 33 without being discharged to the outside. As a result, the antifreezing fluid is restrained from being discharged to the outside from the front and rear sprinkling nozzles 19, 22 to maintain the excellent environment around a vibrating roller 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rolling machine that is suitably used for paving a road surface such as a vibration roller, a tire roller, or a Macadam roller.

  Generally, when paving a road surface or the ground, a rolling machine such as a vibration roller, a tire roller, or a Macadam roller is preferably used. This rolling machine has a road surface on which a front rolling roller is rotatably provided on the front side of the vehicle body and a rear rolling roller is rotatably provided on the rear side, and a pavement material such as a roadbed material and an asphalt mixture is laid on the road surface. This road surface is compacted by rolling with the front and rear rolling rollers.

  Here, the rolling machine body includes a watering tank for storing a large amount of water to be sprayed, a watering nozzle for spraying water in the watering tank onto the pressure roller or road surface, and a watering tank and a watering nozzle. A watering passage that connects the two and a watering pump provided in the middle of the watering passage are provided. And by spraying water in the watering tank toward the watering nozzle with a watering pump, water can always be sprayed on the road surface with paved material and the surface of the front and rear rolling rollers. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 5-47007

  By the way, after the rolling operation of the road surface by the rolling machine is completed, water remains in the watering passage and the like. For this reason, in cold districts and the like, if the water remaining in the watering passage is frozen while the rolling operation by the rolling machine is suspended for a certain period (for example, overnight), the operation can be performed. There is a problem of disappearing.

  For this reason, the body of a rolling compaction machine is usually equipped with an antifreeze liquid tank that stores antifreeze liquid for preventing freezing, and after the road surface rolling operation is completed, the antifreeze liquid in the antifreeze liquid tank is sprinkled with a watering pump. Pump to the aisle. Thereby, it can replace with water and can fill an antifreeze liquid in a watering channel | path, and can prevent freezing of water.

  However, in the prior art, when the compaction machine is stopped overnight and then the compaction operation is performed again, the water in the sprinkling tank is usually pumped into the sprinkling passage by a sprinkling pump, and the water sprayed by this water pressure. A method of extruding antifreeze filled in the passage to the outside is adopted.

  In addition, when the rolling machine is stopped, when filling the sprinkling passage with antifreeze liquid, the antifreezing liquid is normally filled into the sprinkling passage by discharging the antifreezing liquid pumped by the sprinkling pump out of the sprinkling nozzle. A method of confirming that this has been done is employed.

  For this reason, the antifreeze filled in the watering passage is discharged to the outside in large quantities every time the rolling operation is performed, and there is a possibility that the environment around the rolling machine is deteriorated. In addition, there is a problem that a large amount of antifreeze is consumed wastefully because the antifreeze filled in the sprinkling passage is discarded without being collected.

  The present invention has been made in view of the above-described problems of the prior art, and provides a rolling machine capable of suppressing discharge of antifreeze liquid to the outside, maintaining a good environment and suppressing wasteful consumption of antifreeze liquid. It is intended to provide.

  In order to solve the above-described problems, the present invention provides a vehicle body in which a rolling roller is rotatably provided on each of the front side and the rear side, a watering tank that is provided on the vehicle body and stores water to be sprayed, and the vehicle body A water spray nozzle for spraying water in the water spray tank to the rolling roller, a water spray passage connecting the water spray nozzle and the water spray tank, and an antifreeze liquid for storing the antifreeze filled in the water spray passage. The present invention is applied to a pressure rolling machine including a tank and a watering pump that is provided in the middle of the watering passage and pumps the water in the watering tank or the antifreezing liquid in the antifreezing liquid tank toward the watering nozzle.

  A feature of the configuration adopted by the invention of claim 1 is that an antifreeze liquid collecting device is provided for collecting the antifreeze liquid filled in the water spray passage and returning the collected antifreeze liquid into the antifreeze liquid tank. A directional switching valve for selectively switching the watering passage to the watering tank, the antifreeze liquid tank, and the air release position is provided upstream of the watering pump.

  According to a second aspect of the present invention, the antifreeze liquid recovery device includes an antifreeze receiver that receives the antifreeze discharged from the water spray nozzle, and an antifreeze recovery passage that is provided between the antifreeze receiver and the antifreeze tank. It is in the configuration.

  According to a third aspect of the present invention, the direction switching valve is located between the watering tank and the watering pump, is provided in the middle of the watering passage, and supplies water in the watering tank to the watering nozzle. A first direction switching valve that switches between a supply position and an antifreezing liquid filling position that fills the sprinkling passage with the antifreezing liquid in the antifreezing liquid tank; and provided between the antifreezing liquid tank and the first direction switching valve, The antifreeze liquid tank has an antifreeze liquid supply position for supplying the antifreeze liquid to the water sprinkling passage and a second direction switching valve for switching to the air opening position for opening the water sprinkling passage to the atmosphere.

  According to the invention of claim 1, the antifreeze liquid filled in the water sprinkling passage is provided by providing the antifreeze liquid recovery device between the water spray nozzle and the antifreeze liquid tank and switching the direction switching valve to the atmospheric release position to operate the water spray pump. Can be recovered in the antifreeze liquid tank by the antifreeze liquid recovery device. Further, when the antifreeze liquid is filled in the water spray passage, the antifreeze liquid discharged from the water spray nozzle can be recovered by the antifreeze liquid recovery device.

  As a result, the antifreeze liquid can be reliably prevented from being discharged to the outside from the watering nozzle, and the environment around the rolling compactor can be favorably maintained. Also, by collecting the antifreeze liquid discharged from the water spray nozzle, an almost constant amount of antifreeze liquid can always be stored in the antifreeze liquid tank, so that the antifreeze liquid stored in the antifreeze liquid tank can be reused many times. It is possible to reduce wasteful consumption of antifreeze and contribute to cost reduction.

  According to the second aspect of the present invention, the antifreeze liquid discharged from the water spray nozzle by the water spray pump can be received by the antifreeze liquid receiver, and the antifreeze liquid can be circulated into the antifreeze liquid tank through the antifreeze liquid recovery passage.

  According to the third aspect of the present invention, the antifreezing liquid in the antifreezing liquid tank is filled into the watering passage by the watering pump by setting the first direction switching valve to the antifreezing liquid filling position and the second direction switching valve to the antifreezing liquid supply position. can do. On the other hand, by setting the first direction switching valve to the antifreeze filling position and the second direction switching valve to the atmospheric release position, the water is filled in the watering passage by the air pumped into the watering passage by the watering pump. The antifreeze liquid can be discharged from the watering nozzle, and the discharged antifreeze liquid can be returned to the antifreeze liquid tank by the antifreeze liquid recovery device.

  Hereinafter, embodiments of the rolling machine according to the present invention will be described in detail with reference to the accompanying drawings, taking as an example a case where the present invention is applied to a vibrating roller.

  In the figure, reference numeral 1 denotes a vibrating roller as a rolling compactor. This vibrating roller 1 is used, for example, for road pavement work and the like, by running on a road surface paved with roadbed material, asphalt mixture or the like. The road surface is compacted.

  The vibration roller 1 includes a front vehicle body 2 provided with a later-described front rolling roller 6, a rear vehicle body 3 provided with a later-described rear rolling roller 11, and the front vehicle body 2 and the rear vehicle body 3. And a connecting device 4 that connects the left and right sides so as to be swingable. Further, a steering cylinder (not shown) is provided between the front vehicle body 2 and the rear vehicle body 3, and the steering cylinder expands and contracts in response to an operation of a handle 15 to be described later. Is controlled.

  Here, the configuration of the front vehicle body 2 will be described. The front vehicle body 2 is roughly constituted by a front frame 2A having a bottomed box shape and a front cover 2B that covers the front frame 2A so that the front frame 2A can be opened and closed from above, and the front lower side of the front frame 2A is It is a recessed portion 2C that houses a front rolling roller 6 described later. The front frame 2A is provided with equipment (not shown) such as an engine, a hydraulic pump, and a radiator. Further, on the left and right side portions of the front frame 2A, the upper end side of the roller support arm 5 paired in the left and right directions with the recessed portion 2C interposed therebetween is fixed, and on the lower end side of the roller support arm 5 The front rolling roller 6 described later is rotatably supported.

  Reference numeral 6 denotes a front rolling roller that is rotatably provided on the front vehicle body 2, and the front rolling roller 6 has an axial dimension slightly larger than, for example, the left and right width dimensions of the front vehicle body 2. It is composed of a metal drum and is disposed in the recessed portion 2C of the front frame 2A while being supported by the left and right roller support arms 5. Here, a traveling hydraulic motor (not shown) for rotationally driving the front roller roller 6 is provided between the left roller support arm 5 and the front roller roller 6. Between the front rolling roller 6, a vibration hydraulic motor 7 that applies vibration to the front rolling roller 6 is provided. The front rolling roller 6 is configured to compact the road surface by being driven to rotate by the traveling hydraulic motor while generating vibration by the vibration hydraulic motor 7.

  8 is a front blade provided on the front end side of the front vehicle body 2, and the front blade 8 is fixed to the lower surface of the front end portion of the front frame 2A, as shown in FIG. 2, FIG. 4, FIG. It is supported by the right brackets 9 and 9 and extends left and right along the front rolling roller 6. Here, the front blade 8 is formed in a single strip shape extending in the left and right directions using an elastic material such as rubber, for example. And the lower end edge of the front blade 8 is always in contact with the surface of the front rolling roller 6, and for example, the pavement material adhering to the surface of the front rolling roller 6 can be scraped off during paving work. . A front watering nozzle 19 described later is disposed in the vicinity of the front blade 8.

  Next, the configuration of the rear vehicle body 3 will be described. The rear vehicle body 3 is generally constituted by a rear frame 3A having a bottomed box shape and a floor plate portion 3B which is provided on the front side of the rear frame 3A and forms a scaffold for the operator. The side is a recessed portion 3 </ b> C that accommodates a later-described rear rolling roller 11. In the rear frame 3A, a traveling hydraulic motor (not shown) that rotates a rear rolling roller 11 described later is provided, and on the rear frame 3A, a driver seat 10 on which an operator is seated is provided. ing. Further, a water spray tank 18 described later is disposed on the rear side of the driver seat 10, and an antifreeze liquid tank 25 described later is disposed on the right side of the driver seat 10.

  Reference numeral 11 denotes a rear rolling roller rotatably provided on the rear vehicle body 3. The rear rolling roller 11 is fixed to a plurality of axles (not shown) (for example, 4) that extend in the left and right directions. ) Tires 11A, 11A,... And disposed in the recessed portion 3C of the rear frame 3A. The rear rolling roller 11 is rotationally driven by a traveling hydraulic motor (not shown) provided in the rear frame 3A of the rear vehicle body 3 so as to compact the road surface while traveling on the road surface. It has become.

  Reference numeral 12 denotes a rear blade provided on the rear end side of the rear vehicle body 3, and the rear blade 12 is fixed to the lower surface of the rear end portion of the rear frame 3A as shown in FIGS. The brackets 13 and 13 extend to the left and right along the rear rolling roller 11. Here, the rear blade 12 is formed in a single strip shape extending left and right using an elastic material such as rubber, for example. And the lower end edge of the rear blade 12 is always in contact with the surface of the rear rolling roller 11, and for example, it is possible to scrape pavement material and the like adhering to the surface of the rear rolling roller 11 during pavement work. Yes. Further, a rear watering nozzle 22 to be described later is disposed in the vicinity of the rear blade 12.

  14 is an operation stand positioned on the front side of the driver's seat 10 and erected on the floor plate portion 3B. The operation stand 14 includes a steering handle 15 and a forward / reverse switching lever for switching forward and reverse of the vibration roller 1. 16, a brake pedal 17 and the like are provided. When an operator seated in the driver's seat 10 operates the handle 15, a steering cylinder (not shown) provided between the front vehicle body 2 and the rear vehicle body 3 expands and contracts, and the rear vehicle body 3 connects the connecting device 4. The traveling direction of the vibration roller 1 is controlled by swinging left and right with respect to the front vehicle body 2 as a center.

  A watering tank 18 is provided on the rear frame 3A of the rear vehicle body 3 and is located on the rear side of the driver's seat 10, and the watering tank 18 is used for the road surface and the front and rear rolling rollers 6, 6 during paving work. The water sprayed on the surface of 11 is stored. Here, as shown in FIG. 3, the water spray tank 18 has a length dimension substantially equal to the width dimension in the left and right directions of the rear vehicle body 3, and stores a large amount of water inside, thereby vibrating the vibrating roller 1. Is to increase the weight.

  Reference numeral 19 denotes a front watering nozzle which is located near the front blade 8 and is provided on the front end side of the front vehicle body 2, and the front watering nozzle 19 sprays water in the watering tank 18 onto the front rolling roller 6. It is. Here, as shown in FIGS. 2, 4, 5, etc., the front watering nozzle 19 is attached to the front end portion of the front frame 2 </ b> A via a bracket 9, and moves left and right along the front rolling roller 6. And a nozzle port 21 (to be described later) provided in the collective pipe 20. In addition, the vibration roller 1 is usually provided with a road surface water spray nozzle (not shown) for spraying water on the road surface separately from the front water spray nozzle 19 and the rear water spray nozzle 22 described later.

  Reference numeral 21 denotes a plurality of (for example, five) nozzle openings provided in the collecting pipe 20. Each nozzle opening 21 is provided on the lower surface side of the collecting pipe 20 with an appropriate interval in the left and right directions as shown in FIG. The water that protrudes downward and is stored in the water spray tank 18 is sprayed on the surface of the front rolling roller 6.

  Here, as shown in FIGS. 9 and 10, each nozzle port 21 includes a fixed cylinder 21 </ b> A fixed to the lower surface side of the front watering nozzle 19, and a nut screwed to the distal end side of the fixed cylinder 21 </ b> A. The member 21B and a base 21C that is sandwiched between the fixed cylinder 21A and the nut member 21B and injects water from a tip portion protruding from the nut member 21B are roughly configured. Further, a strainer 21D is provided in the fixed cylinder 21A, and a male screw portion 21E is formed on the outer periphery of the distal end portion of the nut member 21B. Then, the water stored in the watering tank 18 is pumped to the front watering nozzle 19 and the rear watering nozzle 22 to be described later by a watering pump 27 described later, and the water pumped to the front watering nozzle 19 is supplied to each nozzle port. 21 is applied to the surface of the front rolling roller 6 through 21.

  A rear watering nozzle 22 is provided in the vicinity of the rear blade 12 on the rear end side of the rear vehicle body 3. The rear watering nozzle 22 supplies water in the watering tank 18 to the rear rolling roller 11. It is something to spray. Here, as shown in FIG. 3, the rear watering nozzle 22 is attached to the rear end portion of the rear frame 3 </ b> A via the bracket 13, and extends in the left and right directions along the rear rolling roller 11. The collecting pipe 23 and each nozzle port 24 described later provided in the collecting pipe 23 are configured.

  Reference numeral 24 denotes a plurality of (for example, four) nozzle openings provided in the collecting pipe 23. Each nozzle opening 24 is provided on the lower surface side of the collecting pipe 23 so as to face each tire 11A constituting the rear rolling roller 11. The water that protrudes downward and is stored in the water spray tank 18 is sprayed on the surface of the rear rolling roller 11.

  Here, similarly to the nozzle port 21 of the front watering nozzle 19, the nozzle port 24 of the rear watering nozzle 22 is generally constituted by a fixed cylinder 24A, a nut member 24B, and a base 24C. Is provided with a strainer 24D, and a male threaded portion 24E is formed on the outer periphery of the tip of the nut member 24B (see FIGS. 9 and 10). The water pumped to the rear watering nozzle 22 by a watering pump 27 described later is configured to be sprayed on the surface of each tire 11 </ b> A of the rear rolling roller 11 through each nozzle port 24.

  Reference numeral 25 denotes an antifreeze liquid tank which is located on the right side of the driver's seat 10 and is provided on the rear frame 3A of the rear vehicle body 3. The antifreeze liquid tank 25 stores antifreeze liquid for preventing freezing. Then, after the rolling operation by the vibrating roller 1 is completed in a cold district or the like, the antifreezing liquid in the antifreezing liquid tank 25 is filled into the watering passage 26, the front watering nozzle 19, and the rear watering nozzle 22 described later. It has become.

  Next, the connection relationship between the watering tank 18, the front watering nozzle 19, the rear watering nozzle 22, the antifreeze liquid tank 25 and the like described above will be described with reference to FIG.

  A watering passage 26 connects between the front watering nozzle 19 and the rear watering nozzle 22 and the watering tank 18, and water in the watering tank 18 or antifreezing liquid in the antifreezing liquid tank 25 is directional switching valves 28, 30 to be described later. By the switching operation, the front watering nozzle 19 and the rear watering nozzle 22 are supplied through the watering passage 26.

  A watering pump 27 is provided in the middle of the watering passage 26, and the watering pump 27 pumps the water in the watering tank 18 or the antifreezing liquid in the antifreezing liquid tank 25 toward the front watering nozzle 19 and the rear watering nozzle 22. To do.

  Reference numeral 28 denotes a first directional switching valve located at the 3 port 2 position between the watering tank 18 and the watering pump 27 and provided in the middle of the watering passage 26. The first direction switching valve 28 is a watering passage. 26, ports 28A and 28B, a port 28C to which a later-described antifreeze passage 29 is connected, and a switching lever 28D operated by an operator.

  The first direction switching valve 28 communicates between the ports 28 </ b> A and 28 </ b> B, thereby supplying water in the water spray tank 18 to the front water spray nozzle 19 and the rear water spray nozzle 22 through the water spray passage 26. (A) is selectively connected to the antifreeze filling position (b) in which the antifreeze liquid in the antifreeze liquid tank 25 is filled into the water spray passage 26, the front water spray nozzle 19 and the rear water spray nozzle 22 by communicating between the ports 28A and 28C. It can be switched to.

  Reference numeral 29 denotes an antifreeze liquid passage for connecting the antifreeze liquid tank 25 and the port 28C of the first direction switching valve 28. The antifreeze liquid passage 29 guides the antifreeze liquid in the antifreeze liquid tank 25 to the water spray passage 26. A second direction switching valve 30 described later is provided in the middle of the antifreeze passage 29.

  Reference numeral 30 denotes a second directional switching valve located at a 3-port 2 position between the antifreezing liquid tank 25 and the first directional switching valve 28 and provided in the middle of the antifreezing liquid passage 29. Has ports 30A and 30B to which the antifreeze passage 29 is connected, an air release port 30C, and a switching lever 30D operated by an operator.

  Then, the second direction switching valve 30 communicates between the ports 30A and 30C and the ports 30A and 30C by communicating between the ports 30A and 30B and the antifreeze solution supply position (c) for supplying the antifreeze solution in the antifreeze solution tank 25 to the water spray passage 26. Thus, the sprinkling passage 26 can be selectively switched to the atmosphere opening position (d) through which the water spray passage 26 is opened to the atmosphere via the antifreeze passage 29.

  A filter 31 is provided between the watering pump 27 and the first direction switching valve 28 and is provided in the middle of the watering passage 26. The filter 31 is provided with water or antifreeze before and after passing through the watering passage 26. When the water flows to the water spray nozzles 19 and 22, foreign matter mixed in the water or antifreeze is captured.

  A check valve 32 is located between the front and rear watering nozzles 19 and 22 and the watering pump 27 and is provided in the middle of the watering passage 26. Water or antifreeze liquid pumped toward the nozzles 19 and 22 is prevented from flowing back to the water spray pump 27 side.

  Reference numeral 33 denotes an antifreeze liquid recovery device provided between the nozzle ports 21 and 24 of the front and rear water spray nozzles 19 and 22 and the antifreeze liquid tank 25. The antifreeze liquid recovery device 33 is filled in the water spray passage 26 and the like. The antifreeze liquid is recovered, and the recovered antifreeze liquid is returned to the antifreeze liquid tank 25. Here, the antifreeze liquid recovery device 33 includes a front antifreeze receiver 34, a rear antifreeze receiver 35, and an antifreeze recovery pipe 36 as an antifreeze recovery passage, which will be described later.

  The antifreeze liquid recovery device 33 fills the sprinkling passage 26, the front and rear sprinkling nozzles 19, 22 with the antifreezing liquid, while the sprinkling passage 26 is filled with the antifreeze liquid, and the sprinkling passage 26, etc. Only when collecting the antifreeze liquid, as shown in FIG. 1, it is provided between the nozzle ports 21 and 24 of the front and rear water spray nozzles 19 and 22 and the antifreeze liquid tank 25. Therefore, when the collection of the antifreeze liquid is completed and the road surface is paved using the vibration roller 1, the antifreeze liquid collection device 33 is removed (see FIG. 6).

  Reference numeral 34 denotes a plurality of (for example, five) front side antifreeze receptacles that are detachably attached to the tip side of each nozzle port 21 provided in the front watering nozzle 19, and each front side antifreeze receptacle 34 is connected to each nozzle port 21. The discharged antifreeze liquid is received, and this antifreeze liquid is led out into an antifreeze liquid recovery pipe 36 described later. Here, as shown in FIGS. 9 and 10, the front antifreeze receiver 34 is attached to the cylinder 34 </ b> B with the cylinder 34 </ b> B having the flange side 34 </ b> A at the distal end side and the cylinder 34 </ b> B in a state where the flange 34 </ b> A is axially retained. The nut member 34C is rotatably configured to be rotatable.

  Then, as shown in FIG. 10, the base member 21 </ b> C of the nozzle port 21 is screwed into the male screw portion 21 </ b> E of the nozzle port 21 by screwing and tightening the nut member 34 </ b> C of the front side antifreeze solution receiving device 34. Thus, the front antifreeze receiver 34 can be detachably attached to the front end side of each nozzle port 21 by being pressed against the inner peripheral edge of the cylindrical body 34B.

  Reference numeral 35 denotes a plurality of (for example, four) rear antifreeze receivers that are detachably attached to the tip end of each nozzle port 24 provided in the rear sprinkling nozzle 22, and each rear antifreeze receiver 35 is connected to each nozzle. The antifreeze discharged from the opening 24 is received, and the antifreeze is led out into an antifreeze collecting pipe 36 described later. Here, as with the front antifreeze receiver 34, the rear antifreeze receiver 35 is roughly constituted by a cylinder 35B having a flange portion 35A at the tip side and a nut member 35C. Then, the rear antifreeze receiver 35 can be attached to and detached from the front end side of each nozzle port 24 by screwing and tightening the nut member 35C of the rear antifreeze receiver 35 to the male threaded portion 24E of the nozzle opening 24. It can be attached to.

  Reference numeral 36 denotes an antifreeze recovery pipe as an antifreeze recovery passage provided by connecting the front antifreeze receiver 34 and the rear antifreeze receiver 35 and the antifreeze tank 25. The antifreeze recovery pipe 36 is provided at each nozzle opening. The antifreeze discharged from 21 and 24 and received by the front antifreeze receiver 34 and the rear antifreeze receiver 35 is collected and returned to the antifreeze tank 25.

  Here, as shown in FIG. 1 and the like, the antifreeze liquid recovery pipe 36 is located below the front watering nozzle 19 and extends left and right, and is connected to the front side recovery pipe 36A to which each front antifreeze liquid receiver 34 is connected. A rear recovery pipe 36B, which is located below the rear watering nozzle 22 and extends left and right, and to which each rear antifreeze receiver 35 is connected, and these front recovery pipe 36A and rear recovery pipe 36B, And a T-shaped joint 36C that is detachably attached to the antifreeze liquid tank 25. Further, the antifreeze liquid recovery pipe 36 is constituted by, for example, a flexible transparent hose so that it can be confirmed from the outside that the colored antifreeze liquid flows through the antifreeze liquid recovery pipe 36. .

  Accordingly, the front antifreeze receiver 34 of the antifreeze liquid recovery device 33 is connected to the nozzle port 21 of the front water spray nozzle 19 and the rear antifreeze receiver 35 is connected to the nozzle port 24 of the rear water spray nozzle 22, which will be described later. In this manner, the antifreeze liquid is discharged from the nozzle ports 21 and 24 by the water spray pump 27 so that the discharged antifreeze liquid can be circulated into the antifreeze liquid tank 25 through the antifreeze liquid recovery pipe 36.

  The vibrating roller 1 according to the present embodiment has the above-described configuration. When the rolling operation such as pavement of a road surface is performed using the vibrating roller 1, first, the antifreezing liquid recovery device 33 shown in FIG. Then, the water is removed from the front watering nozzle 19, the rear watering nozzle 22, and the antifreeze liquid tank 25, and as shown in FIG. 6, the water stored in the watering tank 18 is sprayed from the front watering nozzle 19 and the rear watering nozzle 22 onto the road surface. Make it ready.

  In this state, the driver seated in the driver's seat 10 operates the handle 15 and the like to cause the vibration roller 1 to travel forward or backward. Thereby, the pavement material such as the roadbed material and the asphalt mixture laid on the road surface can be rolled and compacted by the front rolling roller 6 and the rear rolling roller 11.

  At the time of the rolling operation by the vibrating roller 1, as shown in FIGS. 11 and 12, the water spray pump 27 is in a state where the ports 28A and 28B are in communication with the first direction switching valve 28 as the water supply position (a). Is activated. Thereby, the water stored in the watering tank 18 is pumped to the front watering nozzle 19 and the rear watering nozzle 22 through the watering passage 26.

  As a result, water is sprayed from each nozzle port 21 of the front watering nozzle 19 toward the front rolling roller 6 and from each nozzle port 24 of the rear watering nozzle 22 to each tire 11A of the rear rolling roller 11. Can be sprayed with water. Thereby, it can suppress that a pavement material adheres to the surface of the front rolling roller 6 and the surface of each tire 11A which comprises the back rolling roller 11, and can improve workability | operativity of a rolling operation | work.

  When the rolling operation by the vibration roller 1 is completed, the watering pump 27 is stopped, and water spraying from the front watering nozzle 19 and the rear watering nozzle 22 is also stopped. Here, since the water remains in the watering passage 26, the front watering nozzle 19, and the rear watering nozzle 22 when the rolling operation of the vibration roller 1 is completed, the remaining water is frozen in a cold district or the like. As a result, the watering passage 26, the front watering nozzle 19, the rear watering nozzle 22, and the like may be damaged. For this reason, when the vibration roller 1 is put into a resting state for a long time (for example, overnight) after the rolling operation by the vibration roller 1 is finished, water remaining in the watering passage 26 and the like is discharged. It is necessary to fill with antifreeze instead of this water.

  In this case, the first direction switching valve 28 is switched to the antifreeze filling position (b) to connect the ports 28A and 28C, and the second direction switching valve 30 is switched to the atmospheric release position (d). Then, the watering pump 27 is operated. As a result, air is pumped into the sprinkling passage 26 through the antifreeze passage 29 and water remaining inside the sprinkling passage 26 and the like is discharged to the outside through the nozzle ports 21 and 24 of the front and rear sprinkling nozzles 19 and 22. be able to.

  In this way, after the water remaining in the sprinkling passage 26 and the like is discharged, the front antifreeze receiver of the antifreeze recovery device 33 is once stopped with the sprinkling pump 27 stopped, as shown in FIG. 34 is attached to each nozzle port 21 of the front watering nozzle 19, and each rear antifreeze receiver 35 is attached to each nozzle port 24 of the rear water nozzle 22, and these front and rear antifreeze receivers 34, 35 are connected. The T-shaped joint 36C of the antifreeze liquid recovery pipe 36 is connected to the antifreeze liquid tank 25 (see FIG. 1).

  In this way, after the antifreeze liquid recovery device 33 is mounted between the nozzle ports 21 and 24 of the front and rear sprinkling nozzles 19 and 22 and the antifreeze liquid tank 25, the first direction switching valve 28 is moved to the antifreeze liquid filling position. As shown in (b), the ports 28A and 28C are communicated with each other, and the second direction switching valve 30 is switched to the antifreeze liquid supply position (c) to communicate between the ports 30A and 30B. By operating the water spray pump 27 in this state, the antifreeze liquid stored in the antifreeze liquid tank 25 is pumped to the front water spray nozzle 19 and the rear water spray nozzle 22 through the antifreeze liquid passage 29 and the water spray passage 26, and each nozzle port 21. , 24.

  At this time, since the front antifreeze receiver 34 is attached to each nozzle port 21 of the front water spray nozzle 19 and the rear antifreeze receiver 35 is attached to each nozzle port 24 of the rear water nozzle 22, each nozzle The antifreeze discharged from the ports 21 and 24 is led out into the antifreeze recovery pipe 36 via the front and rear antifreeze receptacles 34 and 35 without being discharged onto the road surface or the like.

  Further, since the antifreeze liquid recovery pipe 36 is constituted by a transparent hose, it can be confirmed from the outside that the colored antifreeze liquid has been led into the antifreeze liquid recovery pipe 36. Therefore, the operator can stop the filling operation of the antifreezing liquid by stopping the water spray pump 27 when the antifreezing liquid is led out into the antifreezing liquid recovery pipe 36, and can make the vibration roller 1 in a resting state.

  Thus, by discharging the antifreeze liquid pumped by the water spray pump 27 from the nozzle ports 21 and 24, the water spray passage 26, the front water spray nozzle 19 and the rear water spray nozzle 22 can be reliably filled with the antifreeze liquid. . As a result, it is possible to reliably prevent the watering passage 26, the front watering nozzle 19, the rear watering nozzle 22 and the like from being damaged by freezing of the remaining water.

  In addition, since the antifreeze liquid recovery device 33 is installed between the nozzle ports 21 and 24 of the front and rear watering nozzles 19 and 22 and the antifreeze liquid tank 25, the antifreeze liquid discharged from the nozzle ports 21 and 24 is removed. The antifreeze liquid recovery device 33 can be led into the antifreeze liquid recovery pipe 36. As a result, the antifreeze liquid is not discharged onto the road surface or the like, and the environment around the vibration roller 1 can be kept good.

  Next, in the case of performing the rolling operation again by operating the vibration roller 1 in the operation pause state, first, as shown in FIG. 6, the nozzle ports 21 and 24 of the front and rear watering nozzles 19 and 22 are used. It is confirmed that the antifreeze liquid recovery device 33 is attached between the antifreeze liquid tank 25 and the antifreeze liquid tank 25. Then, the first direction switching valve 28 is set to the antifreeze filling position (b) to communicate between the ports 28A and 28C, and the second direction switching valve 30 is switched to the atmospheric release position (d) to connect the ports 30A and 30C. The watering pump 27 is actuated in a state of communication.

  As a result, air is pumped into the sprinkling passage 26 through the antifreeze passage 29, and the antifreeze filled in the sprinkling passage 26, the front sprinkling nozzle 19, and the rear sprinkling nozzle 22 is received from each nozzle port 21, 24. It can be led out into the antifreeze liquid recovery pipe 36 via the tool 34 and the rear antifreeze receiver 35 and discharged into the antifreeze liquid tank 25 through the antifreeze liquid recovery pipe 36. In this case, since the antifreeze liquid recovery pipe 36 is constituted by a transparent hose, it can be confirmed from the outside that the colored antifreeze liquid returns to the antifreeze liquid tank 25 through the antifreeze liquid recovery pipe 36, and the water spray pump 27 is appropriately connected. By stopping the operation, the antifreeze recovery operation can be completed.

  When a small amount of antifreeze liquid remains in the antifreeze liquid collection pipe 36 after the above-described recovery operation is completed, the first direction switching valve 28 is set to the antifreeze liquid filling position (b) and the second direction switching is performed. With the valve 30 in the atmosphere open position (d), the front antifreeze receiver 34 and the rear antifreeze receiver 35 of the antifreeze recovery device 33 are removed from the nozzle ports 21 and 24. Then, by lifting the entire antifreeze liquid collection pipe 36 to a position higher than the antifreeze liquid tank 25, a small amount of antifreeze remaining in the antifreeze liquid collection pipe 36 can be reliably returned to the antifreeze liquid tank 25.

  In this way, by attaching the antifreeze liquid recovery device 33 between the nozzle ports 21 and 24 of the front and rear water spray nozzles 19 and 22 and the antifreeze liquid tank 25, the water spray passage 26, the front water spray nozzle 19, and the rear water spray nozzle. The antifreeze liquid filled in 22 can be recovered in the antifreeze liquid tank 25 by the air pumped into the water spray passage 26 by the water spray pump 27.

  As a result, it is possible to reliably prevent the antifreeze liquid from being discharged from the nozzle ports 21 and 24 to the road surface and the like, and the environment around the vibration roller 1 can be maintained well. Moreover, by collecting the antifreeze liquid filled in the water spray passage 26, the front water spray nozzle 19 and the rear water spray nozzle 22 in the antifreeze liquid tank 25, an almost constant amount of antifreeze liquid can be always stored in the antifreeze liquid tank 25. This antifreeze can be reused many times.

  After the antifreeze liquid collecting operation is completed in this way, the antifreeze liquid recovery device 33 shown in FIG. 1 is removed from the nozzle ports 21 and 24 of the front and rear water spray nozzles 19 and 22 and the antifreeze liquid tank 25 (see FIG. 1). 6). Then, in the state where the first direction switching valve 28 shown in FIG. 11 is switched to the water supply position (a) and the ports 28A and 28B are in communication with each other, the watering pump 27 is operated to store in the watering tank 18. The sprayed water can be sprayed from the nozzle ports 21 of the front watering nozzle 19 to the front rolling roller 6 and can be sprayed from the nozzle ports 24 of the rear watering nozzle 22 to the rear rolling roller 11.

  Thus, according to the present embodiment, the front antifreeze receiver 34 connected to each nozzle port 21 of the front watering nozzle 19 between the front watering nozzle 19 and the rear watering nozzle 22 and the antifreeze liquid tank 25, and the rear From the rear antifreeze receiver 35 connected to each nozzle port 24 of the side water spray nozzle 22, and the front antifreeze receiver 34 and the antifreeze recovery pipe 36 connecting the rear antifreeze receiver 35 and the antifreeze tank 25. The antifreezing liquid recovery device 33 is attached. Thereby, the antifreezing liquid with which the sprinkling channel | path 26, the front watering nozzle 19, and the rear watering nozzle 22 are filled can be collect | recovered in the antifreezing liquid tank 25 by the water spray pump 27, without discharging | emitting outside.

  Further, when the antifreezing liquid is filled in the watering passage 26, the front watering nozzle 19, and the rear watering nozzle 22, the antifreezing liquid pumped by the watering pump 27 flows from the nozzle ports 21 and 24 of the front and rear watering nozzles 19 and 22. Even when the antifreeze liquid is discharged, the discharged antifreeze liquid can be recovered in the antifreeze liquid recovery pipe 36 of the antifreeze liquid recovery device 33 without being discharged to the outside.

  As a result, it is possible to reliably prevent the antifreeze liquid from being discharged to the outside from the nozzle ports 21 and 24 of the front and rear watering nozzles 19 and 22, and to maintain a favorable environment around the vibration roller 1. it can. Further, by collecting the antifreeze liquid filled in the water spray passage 26, the front water spray nozzle 19 and the rear water spray nozzle 22, an almost constant amount of antifreeze liquid can be always stored in the antifreeze liquid tank 25. The antifreeze liquid stored in 25 can be reused many times, and wasteful consumption of the antifreeze liquid can be suppressed to contribute to cost reduction.

  In the above-described embodiment, in order to supply water to the front and rear watering nozzles 19 and 22, fill with antifreeze liquid, and collect the filled antifreeze liquid, as shown in FIG. The case where the 1st direction switching valve 28 of 3 port 2 position is provided and the 2nd direction switching valve 30 of 3 port 2 position is provided in the middle of the antifreezing liquid channel | path 29 is illustrated.

  However, the present invention is not limited to this. For example, as shown in FIG. 13, the directional control valve is positioned at the 4-port 3 position between the water spray passage 26 and the antifreeze liquid passage 29 located upstream of the water spray pump 27. 37 may be provided. In this case, the direction switching valve 37 has ports 37A and 37B connected to the sprinkling passage 26, a port 37C connected to the antifreeze passage 29, an air release port 37D, and a switching lever 37E operated by the operator. is doing. Then, the direction switching valve 37 is connected to the water supply position (a) for communicating between the ports 37A and 37B, the antifreeze filling position (b) for communicating between the ports 37A and 37C, and the atmosphere opening for communicating between the ports 37A and 37D. By selectively switching to the position (c), it is possible to supply water to the front and rear watering nozzles 19 and 22, to fill the antifreeze liquid, and to collect the filled antifreeze liquid.

  In the above-described embodiment, the connection between the front antifreeze receiver 34 of the antifreeze recovery device 33 and each nozzle port 21 of the front water spray nozzle 19 is connected to the nut member 34C and the nozzle port 21 of the front antifreeze receiver 34. The case where it carries out by screwing with the external thread part 21E provided in is illustrated. However, the present invention is not limited to this. For example, the front antifreeze receiver 34 and the nozzle port 21 may be connected using a quick joint (one-touch coupler). The same applies to the connection between each rear antifreeze receiver 35 of the antifreeze recovery device 33 and each nozzle port 24 of the rear sprinkling nozzle 22.

  Moreover, in embodiment mentioned above, the vibration roller 1 is mentioned as an example and demonstrated as a compaction machine. However, the present invention is not limited to this, and can be widely applied to other rolling machines such as tire rollers and Macadam rollers.

It is a front view which shows the vibration roller by embodiment of this invention. It is the right view which looked at the vibration roller from the arrow II-II direction in FIG. It is the left view which looked at the vibration roller from the arrow III-III direction in FIG. It is the principal part enlarged view which expanded the A section in FIG. It is the principal part enlarged view which expanded the B section in FIG. It is a front view which shows the state which removed the antifreeze liquid collection | recovery apparatus from the vibration roller of FIG. It is a principal part enlarged view which shows the state which removed the antifreeze liquid collection | recovery apparatus from the front side watering nozzle in FIG. It is a principal part enlarged view which shows the state which removed the antifreeze liquid collection | recovery apparatus from the front side watering nozzle in FIG. It is an expanded sectional view which shows the state which removed the front side antifreeze receiver of the antifreeze liquid collection | recovery apparatus from the nozzle opening of the front watering nozzle. It is an expanded sectional view which shows the state which attached the front antifreeze receiver of the antifreeze liquid collection apparatus to the nozzle opening of the front watering nozzle. It is a circuit diagram which shows connection relations, such as a sprinkling tank, an antifreeze liquid tank, a sprinkling channel | path, a front watering nozzle, a rear watering nozzle, an antifreezing liquid collection | recovery apparatus. It is a time chart which shows the operation state of a watering pump, a 1st direction switching valve, and a 2nd direction switching valve with time. It is a circuit diagram similar to FIG. 11 which shows the modification of a direction switching valve.

Explanation of symbols

1 Vibration roller (rolling machine)
2 Front Body 3 Rear Body 6 Front Rolling Roller 11 Rear Rolling Roller 18 Sprinkling Tank 19 Front Watering Nozzle 22 Rear Watering Nozzle 25 Antifreeze Liquid Tank 26 Watering Passage 27 Watering Pump 28 First Directional Switching Valve 29 Antifreeze Liquid Passage 30 First Direction switching valve 2 33 Antifreeze liquid recovery device 34 Front antifreeze receiver 35 Rear antifreeze receiver 36 Antifreeze recovery pipe (antifreeze recovery passage)
37 direction switching valve

Claims (3)

A vehicle body in which a rolling roller is rotatably provided on each of the front side and the rear side, a watering tank that is provided on the vehicle body and stores water to be sprayed, and water in the watering tank provided on the vehicle body A watering nozzle that sprays the rolling roller, a watering passage that connects between the watering nozzle and the watering tank, an antifreeze liquid tank that stores the antifreeze liquid that fills the watering passage, and a water spraying passage that is provided in the middle of the watering passage. In a rolling machine comprising a watering pump that pumps water in the watering tank or antifreezing liquid in the antifreezing liquid tank toward the watering nozzle,
An antifreeze liquid recovery device is provided for recovering the antifreeze liquid filled in the sprinkling passage and returning the recovered antifreeze liquid into the antifreeze liquid tank,
In the sprinkling passage, on the upstream side of the sprinkling pump, there is provided a direction switching valve for selectively switching the sprinkling passage to the sprinkling tank, the antifreeze liquid tank, and the air release position. machine.   The antifreeze liquid recovery device is configured by an antifreeze liquid receiver that receives the antifreeze liquid discharged from the water spray nozzle, and an antifreeze liquid recovery passage that is provided between the antifreeze liquid receiver and the antifreeze liquid tank. 2. The rolling machine according to 1. The direction switching valve is
A water supply position that is located between the watering tank and the watering pump and is provided in the middle of the watering passage, and supplies water in the watering tank to the watering nozzle, and the antifreezing liquid in the antifreezing liquid tank is sprinkled. A first directional control valve for switching to an antifreeze filling position for filling the passage;
Provided between the antifreeze liquid tank and the first direction switching valve, and switches between an antifreeze liquid supply position for supplying the antifreeze liquid in the antifreeze liquid tank to the water spray passage and an air release position for opening the water spray passage to the atmosphere. The compaction machine according to claim 1 or 2, comprising a second direction switching valve.

Images