JP5997618B2 - Rolling machine - Google Patents

Description

  The present invention relates to a rolling machine used for road construction.

  When performing road construction, a rolling machine having a rolling roller such as a vibration roller vehicle is generally used.

  For example, when the compaction machine is a vibration roller vehicle, the compaction roller is configured with a front wheel of the vehicle body as a metal roller and a rear wheel as a tire or a metal roller. The vibration roller vehicle is configured to be able to vibrate at least one of the front wheels and the rear wheels. The vehicle body is composed of a front frame and a rear frame, and these frames are connected by a steering link. The front frame and the rear frame are bent at the steering link portion, and the traveling direction of the vehicle body is determined by the bending angle.

  The front frame houses an engine and a fuel tank used for the engine, and a hydraulic oil tank, a battery, a radiator, a pump, and the like. An operation console and a driver's seat for driving are disposed on the rear frame. The front frame is formed to be as low as possible so as not to obstruct the forward view from the driver's seat. Therefore, sufficient space is not provided in the accommodation space in the front frame. However, since it is necessary to dispose the above-described devices in the front frame, the space in the front frame is considerably narrow. A fuel tank, which is one of the members arranged in the front frame, is fastened to the front frame by bolting with respect to the bottom of the front frame and the right rear side.

  However, since the fuel tank is directly fastened to the front frame with bolts, the fuel tank is easily affected by stress due to deformation of the front frame. Since the stress is transmitted to the front frame by the load caused by vibration and the load caused by the steering operation, this stress is transmitted to the fuel tank, which may cause damage to the tank. Further, since the fuel tank is fixed to both the bottom plate and the right side plate of the front frame, the direction of the stress received is different, and the influence of the stress is even greater. Although it may be possible to move the fuel tank away from the front frame, there is a demand to make effective use of the space in the frame according to the shape of the frame because the tank capacity is to be as large as possible. The gap is small, and the influence of stress concentration on the bolt fixing portion of the front frame is inevitable, and the shape deformation of the fuel tank is a problem.

  Therefore, it is conceivable that the front frame and the fuel tank are not directly fastened by bolts but are fixed via an elastic body or the like (see, for example, Patent Document 1). However, the fuel tank fixing structure as in Patent Document 1 requires a space on the side surface of the tank, so that the space in the front frame cannot be used to the maximum extent possible. Furthermore, in the fuel tank fixing structure of Patent Document 1, a belt for fixing is arranged on the upper surface of the tank. However, an engine is arranged on the upper side of the fuel tank, and the gap between them is narrow. Since there are floats for checking the remaining amount of fuel and pipes for returning and returning to the pump for sending fuel to the engine, it is actually difficult to place a belt on the upper surface of the tank. is there. However, there is also a demand to fix the fuel tank to the front frame while pressing it from above.

Japanese Utility Model Publication No. 2000-62478

  The present invention takes the above-described conventional technology into consideration, and can securely fix the fuel tank in the front frame while pressing it from above, and can suppress the influence of the stress on the fuel tank due to the deformation of the front frame as much as possible. An object is to provide a rolling machine.

In order to achieve the above object, in the present invention, a vehicle body having a front frame and a rear frame having a bottom plate and a plurality of side plates standing from the bottom plate is combined with a wheel attached to the front frame or the rear frame. Fuel supplied to the engine, housed in a space surrounded by a rolling wheel, a connecting portion connecting the front frame and the rear frame, and a bottom plate and a side plate of the front frame and fixed to the bottom plate a fuel tank but which is stored, a gap formed, and the one side surface and the side plate of the fuel tank spaced from each other between at least one side surface and the side plate opposed thereto before Symbol fuel tank, the gap provided on one side surface of the fuel tank to form a, a receiving portion protruding toward the gap, is provided on the side plate forming the gap, and a pressing portion that presses the receiving portion from above, Provided in each even between the pressing portion and the receiving portion without, characterized in that it comprises an engagement surface facing in the longitudinal direction of the vehicle body to each other, and the engagement is provided between the mating face cushioning material rolling Provides pressure machines.

  Preferably, the gap is provided on one side surface of the front frame, a pressing piece is provided that stands up from the bottom plate and presses the other side surface facing the one side surface of the fuel tank, and at least the pressing piece A cushioning material is disposed between the fuel tank and the other side surface of the fuel tank and between the side plate disposed on the rear side surface of the front frame and the fuel tank.

  Preferably, the other side surface of the fuel tank has a bent portion that is bent or inclined, and the pressing piece includes a pressing member that presses the other side surface of the fuel tank including the bent portion.

  Preferably, a cushioning material is disposed between the side surface of the fuel tank and the side plate through the gap and between the fuel tank and the bottom plate.

  According to the present invention, the fuel tank can be fixed to the front frame while being pressed from above by the receiving portion and the pressing portion on the side surface of the fuel tank. For this reason, it is possible to fix the fuel tank while pressing it from above without using the upper surface of the fuel tank with no space. That is, since a member for fixing the tank is not arranged on the upper surface of the tank, the layout of existing floats and pipes arranged on the front surface of the tank is not affected. Also, the maintainability of the members on the upper surface of these tanks is not affected. Furthermore, since the receiving part and the holding part are formed by utilizing a slight narrow gap between the side surface of the fuel tank and the side plate facing the fuel tank, the space in the front frame is not affected. There is no need to make the fuel tank small to secure space. Further, since the buffer material is interposed on the continuous path that is a path where the fuel tank is continuously connected to the front frame, the influence of the stress on the fuel tank due to the deformation of the front frame can be suppressed.

  In addition, by forming the engagement surfaces that oppose each other in the front-rear direction of the vehicle body on the receiving part and the pressing part, it is possible to prevent the fuel tank from shifting in the front-rear direction of the vehicle body.

  Further, the fuel tank is arranged near the right side (one side surface) and the rear side surface of the front frame, and the left side surface (the other side surface) of the fuel tank is pressed with a pressing piece, so that the left and right sides of the fuel tank are The displacement of the direction can be prevented, and the fuel tank can be securely fixed to the front frame. At this time, since the narrow gap is provided on the right side of the front frame, the engagement surface can prevent the fuel tank from shifting in the front-rear direction.

  Further, the fuel tank can be pressed from above by forming a bent portion on the left side surface of the fuel tank and pressing the left side surface including the bent portion with a pressing piece. That is, the fuel tank can be pressed from above by the pressing piece even on the left side facing the pressed portion from above by the receiving portion and the pressing portion on the right side of the fuel tank. For this reason, the fuel tank can be more securely fixed to the front frame.

1 is a schematic side view of a rolling machine according to the present invention. It is a schematic right view which shows the fuel tank arrange | positioned in the front flame | frame. It is a schematic rear view which shows the fuel tank arrange | positioned in the front flame | frame. It is a schematic plan view which shows the fuel tank arrange | positioned in the front flame | frame. It is a schematic left view which shows the fuel tank arrange | positioned in the front flame | frame. It is a schematic perspective view of the fuel tank vicinity. It is a schematic perspective view when a fuel tank is seen from the right side and the front side. It is a schematic perspective view when a fuel tank is seen from the left side and the rear side.

  Hereinafter, an embodiment of a rolling machine according to the present invention will be described with reference to the drawings. A rolling machine 1 according to the present invention is a vibrating roller that has a steel wheel that also serves as a front wheel as shown in FIG.

  The rolling machine 1 has a vehicle body constituted by a front frame 2 and a rear frame 3. The front frame 2 and the rear frame 3 are connected in an articulated manner that can be bent in the horizontal direction via a connection portion 4 including a steering cylinder and a link pin connected to the steering cylinder. The rolling machine 1 can turn the vehicle by bending the front frame 2 and the rear frame 3 to each other via the connection portion 4.

  The above-described rolling wheel 5 made of an iron wheel is a metal drum having a length substantially corresponding to the vehicle width, and is rotatably supported by a pair of left and right support arms 6 extending downward from the front frame 2. . On the other hand, the rear wheel 7 attached to the rear frame 3 is composed of a plurality of tires, for example, a total of four tires each provided with a pair of two tires. The rear wheel 8 is rotatably supported by an axle (axle) 7 provided on the rear frame 3. A device such as an engine or a hydraulic pump (not shown) is mounted on the front frame 2 as a power unit, and the driving force of the engine is transmitted to the rear wheel 8 via the axle 7. Although not shown, the hydraulic oil discharged from the hydraulic pump by driving the engine is supplied to, for example, a vibration motor provided in the rolling wheel 5, and the vibration motor causes the rolling pressure of the road surface to be supplied. Sometimes the rolling wheel 5 is vibrated. In addition, a brake device (not shown) is housed in the axle 7, and the braking of the rear wheel 8 can be performed by the brake device, so that the travel of the rolling compactor 1 can be stopped.

  An operation console 9 having a steering 11 is installed at a front position of the rear frame 3, and a seat 10 is installed on the rear side of the operation console 9. An operator seated on the seat 10 runs the rolling machine 1 by operating the steering 11 and the accelerator pedal or the brake pedal under the foot, and performs rolling of the road surface by the rolling wheel 5 during pavement work. A water storage tank 14 is disposed directly below and behind the seat 10. The water storage tank 14 is connected to a water spray nozzle 15 disposed in the vicinity of the rolling wheel 5 and the rear wheel 8 via a pipe. Specifically, the watering nozzle 15 is attached to scraper devices 12 and 13 to be described later. Thereby, at the time of pavement work, water stored in the water storage tank 14 is transferred from the water spray nozzle 15 to the pressure wheel 5 and the rear wheel 8 so that pavement materials such as gravel and asphalt do not adhere to the pressure wheel 5 and the rear wheel 8. Or water can be sprayed on the road surface.

  The front frame 2 is provided with scraper devices 12 and 16 that extend toward the rolling wheel 5 and extend in the direction along the rotation axis of the rolling wheel 5 as a width direction. It is possible to scrape pavement materials such as gravel and asphalt. In addition, the rear frame 3 is provided with a scraper device 13 that extends toward the rear wheel 8 and extends in the direction along the rotation axis of the rear wheel 8 as a width direction. It is possible to scrape pavement materials such as gravel and asphalt.

  As shown in FIGS. 2 to 8, the front frame 2 accommodates a fuel tank 17 in which the fuel supplied to the engine described above is stored. Specifically, the fuel tank 17 is accommodated in a space surrounded by a bottom plate 18 forming a front frame and a plurality of side plates 19 standing from the bottom plate 18. The fuel tank 17 is accommodated near the right side plate 19 a on the right side surface side of the front frame 2 and the rear side plate 19 b on the rear side surface of the front frame 2. Therefore, at least the right side surface of the fuel tank 17 and the right side plate 19a facing the fuel tank 17 are slightly separated from each other, and a narrow gap 20 is formed. The narrow gap 20 is provided with a receiving piece 21 protruding from the right side surface of the fuel tank 17 toward the right side plate 19a. The receiving piece 21 is a plate material, for example, and is fixed to the fuel tank 17 by welding. A pressing piece 22 is disposed above the receiving piece 21. The holding piece 22 is fixed to the right side plate 19a by a bolt 23 and presses the receiving piece 21 from above.

  In this way, the fuel tank 17 is fixed to the front frame 2 while pressing the fuel tank 17 from above with the receiving piece 21 and the holding piece 22 on the right side surface of the fuel tank 17, so use the upper surface of the fuel tank 17 with no space. The fuel tank 17 can be fixed without being pressed from above. An engine, a radiator 33, and an oil cooler 34 (not shown) are arranged above the fuel tank 17, so that the gap between them is narrow. Further, the upper surface of the tank 17 has a float 24 and an engine for checking the remaining amount of fuel. On the other hand, a pipe 25 for returning to and returning to the pump for sending fuel, or a fuel filler port 26 is provided. By using the narrow gap 20 on the right side surface of the fuel tank 17, it is not necessary to arrange a member for fixing the tank 17 on the upper surface of the tank 17, so that the fuel tank is not affected with respect to these arrangements. 17 can be pressed from above. Further, not arranging a member for pressing the tank 17 from above on the upper surface of the tank 17 affects the maintainability of the float 24, the pipe 25, or the fuel filler 26 on the upper surface of the tank 17 described above. Absent. Further, since the receiving piece 21 and the holding piece 22 are formed by using a small narrow gap 20 between the right side surface of the fuel tank 17 and the right side plate 19a opposed thereto, the receiving piece 21 and the holding piece 22 are formed in the space in the front frame 2. There is no influence, and it is not necessary to make the fuel tank 17 small in order to secure a space therefor.

  On the other hand, the receiving piece 21 and the holding piece 22 are formed with engaging surfaces 27 and 28 that face each other in the longitudinal direction of the vehicle body. Specifically, the receiving piece 21 has a concavely cut portion, the pressing piece 22 has a convexly protruding portion, and the engaging surfaces 27 and 28 are moved by the convex portion entering the concave portion. It is formed. In this example, two surfaces where the receiving piece 21 and the pressing piece 22 are opposed to each other are formed, but the surfaces opposing the front frame 2 on the rear side are used as the engaging surfaces 27 and 28. By forming such an engagement surface, the fuel tank 17 can be prevented from shifting in the front-rear direction of the vehicle body, and as a result, the fuel tank 17 can be securely fixed to the front frame 2.

  The fuel tank 17 is also fixed to the bottom plate 18 of the front frame 2 via bolts 29. Specifically, the left side surface of the fuel tank 17 is fixed while being pressed through a pressing piece 30 having a substantially L-shaped cross section. The bolt 29 passes through a fixing portion 30 a that is one piece of the pressing piece 30 and fixes the pressing piece 30 to the bottom plate 18. The left side surface of the fuel tank 17 is pressed by a standing portion 30 b that is the other piece of the pressing piece 30. That is, the standing portion 30 b is formed so as to protrude from the bottom plate 18. Thus, since the left side surface of the fuel tank 17 is pressed by the pressing piece 30, it is possible to prevent the fuel tank 17 from being displaced in the left-right direction. As a result, the fuel tank 17 can be securely fixed to the front frame 2 without shifting in any of the front, rear, left and right directions.

  Here, when there is an inclined bent portion 31 on the left side surface of the fuel tank 17, the standing portion 30b of the pressing piece 30 may also be inclined following this to form the inclined portion 30c. As a result, the bent portion 31 is pressed by the inclined portion 30c. The pressing to the left side surface of the fuel tank 17 by the inclined portion 30c also contributes as a pressing from the upper side of the fuel tank 17 by at least the pressing piece 30. As a result, the fuel tank 17 is pressed from above by the pressing piece 30 on the left side opposite to the pressed position by the receiving piece 21 and the holding piece 22 on the right side of the fuel tank 17. Will be able to. As described above, the fuel tank 17 can be more securely fixed to the front frame 2 by performing the pressing from the upper side on the right side and the left side of the fuel tank. In other words, the pressing piece 30 presses the left side surface of the fuel tank 17 with a pressing member including the bent portion 31 and the standing portion 30b and the inclined portion 30c.

  A buffer material 32 is necessarily interposed on a continuous path that is a path where the fuel tank 17 and the front frame 2 are continuously connected. That is, the fuel tank 17 and the front frame 2 are in contact with each other only through the cushioning material 32 and are not in direct contact with each other, and moreover, there is no continuous portion through the rigid member. The buffer material 32 is, for example, an elastic member (rubber plate). As described above, the fuel tank 17 always comes into contact with the front frame 2 through the cushioning material 32, so that the stress of the front frame 2 is not transmitted to the fuel tank 17. As an example of the above-mentioned continuous path, between the receiving piece 21 and the pressing piece 22, between the right side surface and the right side plate 19 a of the fuel tank 17 via the narrow gap 20, and the bottom surface and bottom plate of the fuel tank 17. 18, and cushioning materials 32 a, 32 b, and 32 c are disposed between them. Other examples of the continuous path include the rear plate 19b disposed between the engagement surfaces 27 and 28, between the pressing piece 30 and the left side surface of the fuel tank 17, and on the rear side of the front frame 2. Between the rear surfaces of the fuel tank 17, buffer materials 32 d, 32 e, and 32 f are disposed between them. When the pressing piece 30 has the inclined portion 30 c, the cushioning material 32 e is also disposed between the inclined portion 30 c and the bent portion 31 of the fuel tank 17. As described above, since the buffer material 32 is provided on the continuous path that is a path where the fuel tank 17 is continuously connected to the front frame 2, the influence on the fuel tank 17 due to the stress of the front frame 2 can be suppressed.

  In the above example, the engagement surfaces 27 and 28 are formed between the receiving piece 21 and the holding piece 22. However, the receiving piece 21 is protruded from the side surface of the fuel tank 17 on the pressing piece 30 side. Further, by forming the engagement surfaces 27 and 28 between the receiving piece 21 and the pressing piece 30, the fuel tank 17 can be prevented from being displaced in the front-rear direction. By providing the pressing piece 22 and the pressing piece 30 and the engagement surfaces on both sides, it is possible to more reliably prevent the fuel tank 17 from shifting in the front-rear direction. Moreover, although the example which provided the receiving piece 21 and the pressing piece 22 in the right side surface side of the fuel tank 17 was shown, when this is provided in the rear surface side, the shift | offset | difference of the left-right direction can be prevented by the engagement surfaces 27 and 28. In this case, if the pressing piece 30 is arranged on the front surface of the fuel tank 17, the pressing piece 30 can prevent the fuel tank 17 from shifting in the front-rear direction.

  In the above example, the fuel tank 17 is accommodated near the right side and the rear side of the front frame 2, but even when the fuel tank 17 is accommodated near the left side and the rear side, the receiving piece is the same as described above. By providing the pressing piece, the fuel tank 17 can be reliably fixed to the front frame 2.

  Further, in the above-described example, the receiving piece 21, the holding piece 22, and the pressing piece 30 are all described as being separate from the fuel tank and the front frame 2, but for example, the receiving piece 21 is integrally formed by recessing the fuel tank 17. The pressing piece 22 and the pressing piece 30 may be provided integrally with the front frame 2 to be a pressing part and a pressing part, respectively.

1: rolling machine, 2: front frame, 3: rear frame, 4: connection part, 5: rolling wheel, 6: support arm, 7: axle, 8: rear wheel, 9: operation table, 10: seat, 11: Steering, 12: Scraper device, 13: Scraper device, 14: Water storage tank, 15: Water spray nozzle, 16: Scraper device, 17: Fuel tank, 18: Bottom plate, 19: Side plate, 19a: Right side plate, 19b: Rear Side plate, 20: narrow gap, 21: receiving piece (receiving part), 22: pressing piece (pressing part), 23: bolt, 24: float, 25: pipe, 26: oil supply port, 27: engagement surface, 28: Engagement surface, 29: bolt, 30: pressing piece (pressing part), 30a: fixed part, 30b: standing part, 30c: inclined part, 31: bent part, 32: cushioning material, 33: radiator, 34: oil Cooler, 35: pressing member

Claims (4)

A vehicle body having a front frame and a rear frame having a bottom plate and a plurality of side plates standing from the bottom plate ;
A rolling wheel also serving as a wheel attached to the front frame or the rear frame;
A connecting portion connecting the front frame and the rear frame;
A fuel tank that is accommodated in a space surrounded by a bottom plate and a side plate of the front frame and is fixed to the bottom plate, and stores fuel to be supplied to the engine ;
A gap formed between at least one side surface and the side plate opposed thereto, with one side of the fuel tank and the side plate is spaced apart prior Symbol fuel tank,
A receiving portion provided on one side surface of the fuel tank forming the gap and projecting toward the gap ;
A holding part that is provided on a side plate that forms the gap and presses the receiving part from above ;
An engagement surface provided in each of at least the receiving portion and the pressing portion and facing each other in the front-rear direction of the vehicle body;
A cushioning material provided between the engagement surfaces;
Compaction machine, characterized in that it comprises a. Providing the gap on one side of the front frame;
Providing a pressing piece that stands up from the bottom plate and presses the other side surface facing the one side surface of the fuel tank,
A cushioning material is disposed between at least the pressing piece and the other side surface of the fuel tank and between the side plate disposed on the rear side surface of the front frame and the fuel tank. The rolling machine according to claim 1. The other side surface of the fuel tank has a bent portion that is bent or inclined,
The rolling device according to claim 2, wherein the pressing piece includes a pressing member that presses the other side surface of the fuel tank including the bent portion. Between the side surface and the side plate of the fuel tank through the gap, and according to any one of claims 1 to 3, characterized in that arranged cushioning material between the fuel tank and the bottom plate Rolling machine.

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