Rolling machine

Abstract

To provide a rolling machine that enables easy check of an amount of work oil stored in a work oil tank.SOLUTION: A tire roller 1 (rolling machine) includes: a driver seat 9; front rolling wheels 3f provided on the front side of the driver seat 9; and a work oil tank 60 that stores work oil to be supplied to a mounted hydraulic apparatus. The work oil tank 60 is provided above the front rolling wheels 3f and is provided so as to partially expose toward the driver seat 9. A portion of the work oil tank 60 that exposes toward the driver seat 9 (back surface 60a) includes an oil gauge 70 (liquid level gauge) that indicates height of a liquid level of the work oil stored in the work oil tank 60.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a rolling machine equipped with a hydraulic oil tank that stores hydraulic oil to be supplied to hydraulic equipment. [Background technology]

[0002] Conventionally, there is known a technique related to a work machine such as a rolling machine equipped with a hydraulic oil tank that stores hydraulic oil to be supplied to hydraulic equipment. For example, Patent Document 1 describes a work machine in which a prime mover room is provided below a cabin in which a driver's seat is provided, and a hydraulic oil tank is arranged in the prime mover room. In this work machine, a partition plate that separates the cabin and the prime mover room is provided near the feet of a driver seated in the driver's seat, and an oil gauge that displays the liquid level of the hydraulic oil stored in the hydraulic oil tank is attached to this partition plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7051631 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration of Patent Document 1, the oil gauge is located near the driver's feet, so the driver sitting in the driver's seat cannot check the oil gauge while driving unless he or she significantly changes their posture or line of sight, and the driver must get into the cabin to visually check the oil gauge, making it difficult to smoothly and easily check the hydraulic oil level during a pre-start inspection, etc. As a result, there is a possibility that maintenance of the hydraulic oil cannot be performed appropriately.

[0005] The present invention has been made in consideration of such problems, and its object is to provide a rolling machine that makes it possible to easily check the amount of hydraulic oil stored in the hydraulic oil tank. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the rolling machine of the present invention is a rolling machine comprising a driver's seat, a front rolling wheel provided in front of the driver's seat, and a hydraulic oil tank for storing hydraulic oil to be supplied to mounted hydraulic equipment, wherein the hydraulic oil tank is provided above the front rolling wheel and is provided so that at least a portion of it is exposed toward the driver's seat, and the portion of the hydraulic oil tank exposed toward the driver's seat is provided with a level gauge that indicates the liquid level of the hydraulic oil stored in the hydraulic oil tank. Effect of the Invention

[0007] According to the rolling machine of the present invention, it is possible to easily check the amount of hydraulic oil stored in the hydraulic oil tank. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a tire roller as a rolling machine according to an embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is an exploded perspective view of the fender shield as viewed from the front left and above. [Diagram 5] FIG. 2 is an exploded perspective view of the fender shield as viewed from the rear right side and above. [Figure 6] FIG. 2 is a perspective view of the tire roller as viewed from the front right side and above; [Figure 7] FIG. 7 is a perspective view showing the tire roller in the state shown in FIG. 6 with some components of the fender shield removed. [Figure 8] FIG. 2 is a perspective view of the tire roller with the engine hood removed, viewed from the front left and above. [Figure 9] FIG. 2 is a perspective view of the tire roller as viewed from the rear right side and below. [Figure 10]FIG. 2 is a perspective view of the tire roller as viewed from the rear and above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a perspective view showing a tire roller as a rolling machine of the embodiment. Fig. 2 is a right side view showing the tire roller, and Fig. 3 is a plan view showing the tire roller. In the following description, the vehicle front-rear direction, left-right direction (i.e., vehicle width direction), and up-down direction are defined with reference to a driver riding on the tire roller 1.

[0010] Three rubber front rolling wheels 3f (rolling wheels) that also serve as running wheels are arranged in parallel in the left-right direction at the front of the body 2 of the tire roller 1, and are supported by the body 2 via a yoke 3 so as to be steerable. In addition, four rubber rear rolling wheels 3r that also serve as running wheels are arranged in parallel in the left-right direction at the rear of the body 2, and are supported by the body 2 via axles (not shown).

[0011] On the right side of the vehicle body 2, approximately in the center in the vehicle front-rear direction, a floor 4 is formed by a floor plate, and on the left side, a step-like step 5 is formed by cutting out the left side of the vehicle body 2, and an operator can get on and off the vehicle body 2 via the step 5. An operating console 8 equipped with a steering wheel 6 and a forward / reverse lever 7 is installed on the front side of the floor 4, and a driver's seat 9 is installed on the rear side. A water supply pump 10 is installed adjacent to the left side of the driver's seat 9, and a ladder 11 is installed on the right side of the driver's seat 9. A roof 13 is supported directly above the driver's seat 9 via a roof stand 12, and the above forms a driver's cab 14 on the right side of the vehicle body 2. The operator seated in the driver's seat 9 operates the steering wheel 6, the forward / reverse lever 7, and the pedal 15 on the floor 4 to run the tire roller 1, and during paving work, the front rolling wheels 3f and the rear rolling wheels 3r compact the paving material laid on the road surface. The water supply pump 10 is also used when replenishing water to a water storage tank 24 (see the shaded area in FIG. 2) from a nearby pond, river, or the like.

[0012] A water sprinkler nozzle 17 and a liquid agent spray nozzle 18 are disposed near the top of the front roller 3f and the rear roller 3r, respectively, and are connected to a water storage tank 24 and a liquid agent tank provided in the vehicle body 2, respectively. Although not shown, three water storage tanks 24 are provided in the vehicle body 2, lined up in the vehicle width direction. During paving work, in order to prevent adhesion of paving material or mud to the outer peripheral surfaces of the front roller 3f and the rear roller 3r, water stored in the water storage tank 24 is sprayed from the water sprinkler nozzle 17 to each outer peripheral surface, and a liquid agent (solvent) serving as an adhesion prevention agent stored in the liquid agent tank is sprayed from the liquid agent spray nozzle 18. This prevents part of the paving material from adhering to the front roller 3f and the rear roller 3r.

[0013] An engine room 20 equipped with an openable / closable engine hood 19 is defined in front of the operation console 8 on the vehicle body 2, and although not shown, an HST (Hydro Static Transmission) is mounted inside the engine room 20. Since the configuration of the HST is well known, only an outline will be described; it is a hydraulic system that uses hydraulic oil from a hydraulic pump driven by the engine to drive hydraulic actuators of various hydraulic devices installed in various parts of the vehicle body 2. This HST drives the rear rolling wheels 3r and steers the front rolling wheels 3f.

[0014] The vehicle body 2 has fender shields 25, 26 that cover the left and right front rolling wheels 3f from above. The fender shield 25 is attached to the right side surface 20a of the engine room 20, and the fender shield 26 is attached to the left side surface 20b of the engine room 20. The right fender shield 25 is provided with a hydraulic oil tank 60 (schematically shown in Figs. 2 and 3) that stores hydraulic oil to be supplied to various hydraulic devices mounted on the vehicle body 2, such as a hydraulic pump, and a headlamp 23 is provided in front of the tank. In addition, an opening 21 is formed between the right fender shield 25 and the vehicle body 2, in front of the driver's seat 9 on the vehicle body 2, to ensure visibility for the operator. The opening 21 is formed by dividing the right side of the engine room 20 of the vehicle body 2 into front and rear parts, and the divided front structure serves as the fender shield 25. The left side of opening 21 is defined by the right side surface of engine compartment 20, the rear side of opening 21 is defined by an inclined cutout surface 2a formed in vehicle body 2, the front side of opening 21 is defined by the lower part of fender shield 25, and the right side of opening 21 is open to the right.

[0015] The opening 21 communicates the driver's seat 9 side with the back surface 60a of the hydraulic oil tank 60, and also communicates the driver's seat 9 side with the right front rolling wheel 3f. As a result, as shown by the solid arrow in FIG. 2, the driver sitting in the driver's seat 9 can visually check the back surface 60a of the hydraulic oil tank 60 and the space between the front rolling wheel 3f and the fender shield 25 from the eye point P. As a result, the driver can visually check the situation around the upper part of the front rolling wheel 3f through the opening 21, for example, the state of adhesion of paving material and mud to the outer peripheral surface of the front rolling wheel 3f, and the state of spraying of water or liquid agent from each nozzle 17, 18. In addition, the degree of wetness of the outer peripheral surface of the front rolling wheel 3f can be visually checked, so that it is possible to judge whether water is being sprayed or not based on the degree of wetness.

[0016] Next, the configuration of the right fender shield 25 and the hydraulic oil tank 60 will be described with reference to Figs. 4 to 10. Fig. 4 is an exploded perspective view of the fender shield 25 as viewed from the front left side and above. Fig. 5 is an exploded perspective view of the fender shield 25 as viewed from the rear right side and above. Fig. 6 is a perspective view of the tire roller 1 as viewed from the front right side and above, and Fig. 7 is a perspective view of the tire roller 1 with some components of the fender shield 25 removed from the state shown in Fig. 6. Fig. 8 is a perspective view of the tire roller 1 as viewed from the front left side and above with the engine hood 19 removed. Fig. 9 is a perspective view of the tire roller 1 as viewed from the rear right side and above. Fig. 10 is a perspective view of the tire roller 1 as viewed from the rear side and above.

[0017] As shown in Figs. 4 and 5, the fender shield 25 includes a bracket 30, a tank body 40, and a cover 50. The bracket 30 is made of a metal material and is a frame having a U-shaped cross section and includes a front plate 31 and side plates 32 and 33. The front plate 31 forms the front surface of the fender shield 25. The front plate 31 is formed with an opening 31a for attaching the headlight 23. The side plates 32 and 33 are arranged opposite each other and extend rearward from both ends of the front plate 31 in the vehicle width direction. One of the side plates 32 is fastened to the right side surface 20a forming the engine room 20 of the vehicle body 2 by using bolts and nuts. A space is formed between the front plate 31 of the bracket 30 and the tank body 40. The lower surface of the space is not closed, and an operator can use this space to attach the headlight 23 or perform maintenance on the hydraulic oil tank 60.

[0018] The tank body 40 is formed of a metal material and has a front plate 41, an upper plate 42, a lower plate 43 (FIG. 9), and a rear plate 44. The tank body 40 is disposed between the side plates 32, 33 of the bracket 30, and is joined to the side plates 32, 33 at both ends in the vehicle width direction. As a result, the space surrounded by the side plates 32, 33 and the tank body 40 becomes a storage space for storing hydraulic oil. Therefore, the hydraulic oil tank 60 is composed of the side plates 32, 33 of the bracket 30 and the tank body 40. The side plate 32 constituting the hydraulic oil tank 60 in this manner is provided with mounting portions 32a, 32b, 32c, 32d for a plurality of hoses 65 (FIG. 8) that communicate between the hydraulic pump of the HST disposed in the engine room 20 and the hydraulic oil tank 60. 8, an opening 20c is formed in the right side surface 20a of the engine room 20 for passing a plurality of hoses 65 that communicate between a hydraulic pump arranged in the engine room 20 and the hydraulic oil tank 60, and the plurality of hoses 65 are attached to the respective attachment portions 32a, 32b, 32c, and 32d via the opening 20c. In this embodiment, the hydraulic pump is arranged forward of the engine.

[0019] Furthermore, oil supply ports 45a, 45b are provided on the top plate 42 of the tank body 40. The oil supply ports 45a, 45b are provided for supplying hydraulic oil to the hydraulic oil tank 60 and for maintaining filters and the like provided inside, and are fitted with removable caps 47a, 47b. Furthermore, an air breather 46 is attached to the cap 47b. The air breather 46 is a pressure regulating device that exhausts internal air to the outside when the pressure inside the hydraulic oil tank 60 increases, and allows outside air to flow inside when the pressure decreases.

[0020] The cover 50 has an upper surface portion 51 and a side surface portion 52 formed of a metal material, and is a cover with an L-shaped cross section that covers the bracket 30 and the tank body 40 from above and from the outside in the vehicle width direction. The upper surface portion 51 of the cover 50 is fastened to the front plate 31 of the bracket 30 and the back plate 44 of the tank body 40 by bolts. As shown in Fig. 9, both the upper surface portion 51 and the side surface portion 52 of the cover 50 extend rearward in the vehicle front-rear direction beyond the back plate 44 of the tank body 40. More specifically, the upper surface portion 51 and the side surface portion 52 extend rearward in the vehicle front-rear direction beyond an oil gauge 70 described later, i.e., toward the driver's seat 9.

[0021] In the hydraulic oil tank 60 configured as above, the back plate 44 of the tank body 40, i.e., the back surface 60a of the hydraulic oil tank 60, is provided so as to be exposed toward the driver's seat 9. An oil gauge 70 is provided on the back surface 60a as a level gauge. The oil gauge 70 has a colorless and transparent cylinder 71 extending in the vertical direction, and the upper and lower ends of the cylinder 71 are fastened to the back surface 44 by bolts. The oil gauge 70 communicates with the inside of the hydraulic oil tank 60 through passages formed at the upper and lower ends, and indicates the level of the hydraulic oil stored in the hydraulic oil tank 60 by the hydraulic oil flowing in from inside the hydraulic oil tank 60. The oil gauge 70 is disposed on the outer side in the vehicle width direction than the outer end 3fa of the front rolling wheel 3f in the vehicle width direction, as shown by the dashed line and solid line arrow in FIG. 10.

[0022] As described above, the tire roller 1 (rolling machine) of the embodiment includes the driver's seat 9, the front rolling wheel 3f provided in front of the driver's seat 9, and the hydraulic oil tank 60 that stores hydraulic oil to be supplied to the mounted hydraulic equipment. The hydraulic oil tank 60 is provided above the front rolling wheel 3f and is provided with a portion exposed toward the driver's seat 9, and an oil gauge 70 (level gauge) that indicates the level of the hydraulic oil stored in the hydraulic oil tank 60 is provided on the portion of the hydraulic oil tank 60 exposed toward the driver's seat 9 (rear surface 60a).

[0023] With this configuration, the driver seated in the driver's seat 9 can visually check the oil gauge 70 attached to the back surface 60a of the hydraulic oil tank 60, so that the driver can easily check the amount of hydraulic oil in the hydraulic oil tank 60 even while the tire roller 1 is in operation. In addition, as shown in FIG. 9, for example, the oil gauge 70 can be easily visually checked even when the driver or other workers are on the ground. This makes it possible to suppress forgetting to perform the inspection before starting work, and to avoid insufficient maintenance of the hydraulic oil. Even if the driver forgets to perform the inspection before getting on the floor 4 where the driver's seat is located, the oil gauge 70 can be checked even after the driver sits on the driver's seat as described above. Furthermore, since the inspector does not need to get on and off the floor 4 where the driver's seat is located to check the oil gauge, the burden on the inspector can be reduced and the work efficiency of the inspection work can be improved. Therefore, according to the tire roller 1 of the embodiment, it is possible to easily check the amount of hydraulic oil stored in the hydraulic oil tank 60.

[0024] As a result, the occurrence of hydraulic oil leakage in the tire roller 1 can be easily and quickly grasped, and the occurrence of malfunctions of various hydraulic equipment such as hydraulic pumps can be suppressed, and damage can be minimized. In particular, in a rolling machine such as the tire roller 1, which is often operated on public roads, by preventing malfunctions of various hydraulic equipment, it is possible to prevent an impact on public infrastructure. In addition, in a rolling machine such as the tire roller 1, which is often used under relatively low load and tends to be used for long periods of time, it is possible to prevent deterioration and wear of various hydraulic equipment. Furthermore, in this embodiment, since the oil gauge 70 has a colorless and transparent cylinder 71, not only the amount of hydraulic oil but also the color of the hydraulic oil can be confirmed, and the degree of deterioration of the hydraulic oil can be easily grasped. Therefore, it is possible to prevent hydraulic equipment troubles and detect sudden troubles early, and it becomes possible to operate the tire roller 1 without incurring unnecessary costs and time.

[0025] In addition, the oil gauge 70 is provided on the outer side of the front roller 3f in the vehicle width direction. This configuration makes it possible to prevent mud splashes caused by the front roller 3f and water or liquid sprayed from each nozzle 17, 18 from adhering to the oil gauge 70.

[0026] The tire roller 1 also includes a fender shield 25 that covers the front rolling wheels 3f from above, and the fender shield 25 includes a hydraulic oil tank 60 and a cover 50 that covers the hydraulic oil tank 60 from above, and an upper surface portion 51 of the cover 50 extends toward the driver's seat 9 beyond the oil gauge 70. With this configuration, the upper surface portion 51 of the cover 50 can be used as a rain or sunshade for the oil gauge 70 attached to the back panel 44, and the upper surface portion 51 can also prevent dust and other dirt from adhering to the oil gauge 70 from above.

[0027] Moreover, the cover 50 covers the side panel 33 of the hydraulic oil tank 60 and includes a side portion 52 that extends toward the driver's seat 9 side beyond the oil gauge 70. With this configuration, the side portion of the cover 50 can prevent dust and other dirt from adhering to the oil gauge 70 attached to the back panel 44 from the outside in the vehicle width direction.

[0028] Although the description of the embodiment is finished above, the aspect of the present invention is not limited to this embodiment. For example, the rolling machine is not limited to the tire roller 1, but may be a vibrating roller, a macadam roller, a tamping roller, or the like. In addition, the cylinder 71 of the oil gauge 70 may not be colorless as long as it can at least confirm the amount of hydraulic oil in the hydraulic oil tank 60. In addition, the oil gauge 70 may be attached to the inside in the vehicle width direction of the outer end 3fa of the front rolling wheel 3f in the vehicle width direction as long as it is visible from the driver seated in the driver's seat 9. In addition, the upper surface portion 51 and the side surface portion 52 of the cover 50 may not extend to the driver's seat 9 side beyond the oil gauge 70. In addition, the hydraulic oil tank 60 may be arranged above the front rolling wheel 3f so that at least a part of it is exposed toward the driver's seat 9, not limited to the back surface 60a, and the oil gauge 70 may be provided in the part of the hydraulic oil tank 60 exposed toward the driver's seat 9. [Explanation of symbols]

[0029] 1 Tire roller (rolling machine) 2. Body 3f Front rolling wheel 3r Rear rolling wheel 9 Driver's seat 20 Engine Room 21 Opening 25, 26 Fender shield 30 Bracket 40 Tank body 50 Cover 51 Top part 52 Side part 60 Hydraulic Oil Tank 60a Back 70 Oil gauge (level gauge)

Claims

1. In a compaction machine equipped with a driver's cab and a hydraulic oil tank for storing hydraulic oil, The hydraulic fluid tank is located in front of the driver's seat. An oil gauge indicating the amount of hydraulic fluid stored in the hydraulic fluid tank is provided in the portion of the hydraulic fluid tank that is exposed towards the driver's seat. A compaction machine characterized by the following features.

2. The front rolling wheel is provided in front of the driver's seat, The hydraulic fluid tank is located above the front compaction wheel. The compaction machine according to claim 1, characterized in that the oil gauge is provided at a position that protrudes outward in the vehicle width direction from the front compaction wheel.

3. The hydraulic oil tank is provided with a cover that covers it from above, The upper part of the cover extends further towards the driver's seat than the oil gauge. A compaction machine according to claim 1 or 2.

4. The compaction machine according to claim 3, characterized in that the cover covers the side plate of the hydraulic oil tank and includes a side portion that extends toward the driver's seat side beyond the oil gauge.

5. The front rolling wheel is provided in front of the driver's seat, The hydraulic fluid tank is located above the front compaction wheel. The oil gauge is located on the rear of the hydraulic fluid tank, which is exposed towards the driver's seat. The compaction machine according to feature 1.

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