JP3551391B2 - Compression roller with cabin - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compaction roller with a cabin of a compaction machine, and more particularly to a tire roller with a cabin.
[0002]
[Prior art]
As a conventional tire roller with a cabin, for example, the one shown in FIG. 5 is known.
This tire roller with a cabin is a so-called vertical engine in which an engine a is arranged with its crankshaft directed in the front-rear direction of the vehicle body. At the rear of the engine a, a hydraulic pump b that is driven by power transmission from the engine a and sends out hydraulic oil is provided below the driver's seat floor of the cabin c. One end of a hydraulic pipe d is connected to the hydraulic pump b, and the hydraulic pipe d extends below the driver's seat floor surface to the rear side, and the other end reaches the power transmission unit e.
[0003]
The power transmission unit e is connected to the other end of the hydraulic pipe d and is supplied with the hydraulic oil sent from the hydraulic pump b. The hydraulic motor f is rotated by the reduction gear g that reduces the rotation of the hydraulic motor f. Is input, and a chain mechanism j (or a gear mechanism) for transmitting the output of the differential gear h to the rear wheels (drive wheels) i. A yoke m for supporting a front wheel (guide wheel) k is attached to a front portion of the vehicle body so as to be rotatable via a vertically long kingpin o arranged in a front frame n.
[Problems to be solved by the invention]
By the way, when performing maintenance of such a tire roller with a cabin, frequently-maintained parts (hereinafter, referred to as maintenance parts) such as the engine a, the hydraulic pump b, the hydraulic pipe d, and the hydraulic motor e are integrated. Since it is an object, the maintenance part is lifted by a crane and taken out to perform maintenance. Then, when lifting the maintenance parts with the crane, since a part of the maintenance parts is arranged below the driver's seat floor surface of the cabin c as described above, the cabin c is removed from the vehicle body and then lifted by the crane. Is going.
[0005]
However, if the cabin c is detached during the maintenance as described above, the work of removing and attaching the cabin c, and the interruption and connection of the transmission system between the steering wheel and the equipment become troublesome, and the maintenance work becomes difficult. There is a disadvantage that the efficiency is reduced.
Further, the weight of the cabin c is reduced from the viewpoint of workability when removing and attaching the cabin c, and as a result, the rigidity of the cabin c cannot be increased, and the durability and strength of the cabin c can be improved. The inconvenience that it cannot be achieved occurs.
[0006]
Further, since the sealing at the detached portion of the cabin c cannot be performed sufficiently, there is a disadvantage that the hermeticity of the cabin c cannot be improved.
Further, since a part of the maintenance parts is arranged below the floor of the driver's seat of the cabin c, it is not possible to lower the position of the cabin c, which causes a disadvantage that the vehicle height is increased.
[0007]
The present invention has been made in order to solve such inconveniences, and can eliminate the necessity of removing the cabin at the time of maintenance, can increase the rigidity of the cabin, and improve the hermeticity of the cabin. It is another object of the present invention to provide a pressure roller with a cabin that can lower the position of the cabin.
[0008]
[Means for Solving the Problems]
To achieve this object, a pressure roller with a cabin according to claim 1 includes an engine, a hydraulic motor that transmits power of the engine to a rear wheel via a hydraulic pump, the hydraulic pump and the hydraulic motor. And a hydraulic piping with a hydraulic pipe interposed between the hydraulic pump and guiding hydraulic oil delivered from the hydraulic pump to the hydraulic motor, wherein the engine and the hydraulic pump are arranged in front of the cabin, and A hydraulic motor is disposed behind the cabin, and the hydraulic piping is disposed laterally of the cabin in a width direction.
[0009]
According to a second aspect of the present invention, there is provided a pressure roller with a cabin, wherein the engine is arranged with its crankshaft directed in the width direction of the vehicle body .
[0010]
According to a third aspect of the present invention, there is provided a rolling roller with a cabin, wherein the cabin is formed in a substantially box shape by a roof, a floor, front, rear, left and right side members, and is fixed to a vehicle body.
According to a fourth aspect of the present invention, there is provided a pressure roller with a cabin, wherein the hydraulic motor is constituted by a pair of hydraulic motors fixedly mounted on respective left and right rear wheels with respective motor shafts.
[0011]
[Action]
According to the first aspect of the present invention, the engine and the hydraulic pump are arranged in front of the cabin, the hydraulic motor is arranged behind the cabin, and the hydraulic piping is arranged laterally in the cabin. The maintenance parts are not arranged below the floor of the driver's seat, so that it is unnecessary to remove the cabin during maintenance. Further, since no maintenance parts are arranged below the floor of the driver's seat of the cabin, the position of the cabin can be lowered, and the vehicle height can be reduced.
[0012]
According to a second aspect of the present invention, in addition to the first aspect, the engine is a so-called horizontal engine having its crankshaft arranged in the width direction of the vehicle body, so that the weight distribution of the vehicle is reduced. The weight distribution of the vehicle is balanced before and after so as not to be biased .
[0013]
According to the third aspect of the invention, in addition to the first or second aspect of the invention, the cabin is formed in a substantially box shape and fixed to the vehicle body, so that the rigidity and the sealing performance of the cabin can be improved. And
According to a fourth aspect of the present invention, in addition to any one of the first to third aspects, the hydraulic motor is a pair of hydraulic motors each having a motor shaft fixed to each of the left and right rear wheels. With this configuration, the number of parts of the hydraulic motor is reduced.
[0014]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory side view in which a part of a tire roller with a cabin according to an embodiment of the present invention is cut away, FIG. 2 is an explanatory plan view for explaining the inside of the tire roller with a cabin, and FIG. FIG. 1 is a sectional view taken along line 3-3 of FIG. 1.
[0015]
Explaining the overall configuration according to FIGS. 1 and 2, the cabin-equipped tire roller 1 includes a cabin 3 disposed on the rear upper side of the vehicle body 2. A guide wheel 4 as a front wheel is disposed at a front portion of the vehicle body 2, and a drive wheel 5 as a rear wheel is disposed at a rear portion. In the present embodiment, the guide wheels 4 are composed of three tires 6a to 6c arranged at equal intervals in the width direction of the vehicle body 2, and the four drive wheels 5 are arranged at equal intervals in the width direction of the vehicle body 2. Of tires 7a to 7d.
[0016]
As shown in FIG. 1, the cabin 3 is formed in a substantially box shape by a roof 3 a, a floor 3 b and front, rear, left and right side members 3 c to 3 f, is unitized, and is fixed to an upper portion of the vehicle body 2. Inside the cabin 3, in addition to the driver's seat 8 and the steering wheel 9, instruments and various operation levers (not shown) are assembled in advance.
The tire 6b located at the center among the tires 6a to 6c constituting the guide wheel 4 is surrounded by a horizontally arranged square frame 13. An axle 12 penetrates the frame 13, and the tires 6 a to 6 c are rotatably supported on the axle 12. As shown in FIGS. 1 and 2, the lower end of a yoke 14 is fixed to the front and rear ends of the frame 13. The upper end of the yoke 14 is pivotally supported by an upper panel 17 of a front frame 16 of the vehicle body 2 via a pivot bearing 15.
[0017]
As shown in FIG. 3, the revolving bearing 15 employs a cross roller bearing in which a roller 20 is held by a retainer 21 between an inner ring 18 and an outer ring 19, as shown in FIG. Although the roller 20 uses a cylindrical roller here, a tapered roller may be used instead. In addition to the cross roller bearing, a single-row or double-row thrust angular ball bearing, a turning thrust cylindrical roller bearing, or the like can be used as the turning bearing 15.
[0018]
The revolving bearing 15 is horizontally interposed between the yoke 14 and the upper panel 17 with its axis centered on the revolving center of the yoke 14. In this embodiment, the inner ring 18 is mounted on the upper surface of the yoke 14. The outer ring 19 is fixed to the lower surface of the upper panel 17. Such fixing is performed by a number of bolts (not shown) for the inner ring 18 and the outer ring 19. By thus interposing the pivot bearing 15 having such a small height horizontally between the yoke 14 and the upper panel 17, the thickness of the front frame 16 is reduced, and the height of the cabin 3 described later is reduced. This solves the problem of poor visibility caused by lowering the distance.
[0019]
As shown in FIGS. 2 and 3, a steering arm 23 extends in the width direction of the vehicle body 2 from the upper end of the yoke 14, and a distal end of the steering arm 23 has a piston of a cylinder device 24 for steering. The rod 25 is connected. The cylinder device 24 turns the yoke 14 via the steering arm 23 by the expansion and contraction, and steers the guide wheel 4. Specifically, as is well known, the controller controls the opening of a control valve (both not shown) by operating the steering wheel 9, so that the fluid pressure to the cylinder device 24 is adjusted and the piston rod 25 is adjusted. Expands and contracts. By such expansion and contraction, the steering arm 23 turns integrally with the yoke 14, and the guide wheel 4 is steered. At this time, in the revolving bearing 15, the inner ring 18 is rotated with respect to the outer ring 19 while the roller 20 is rotated, so that the yoke 14 is smoothly rotated.
[0020]
The forward and backward traveling of the cabin-equipped tire roller 1 is performed by operating an accelerator pedal (not shown), a forward / reverse switching device, and the like in the cabin 3 to drive the driving wheels 5. As shown in FIG. 2, between the tires 7a and 7b, and between the tires 7c and 7d, which constitute the driving wheels 5, hydraulic motors 26 are respectively arranged behind the cabin 3. I have. The hydraulic motor 26 is fixed to brackets 28a extending from the vehicle body frame 28 between the tires 7a and 7b and between the tires 7c and 7d, with their rotation axes directed in the width direction of the vehicle body 2. ing.
[0021]
The hydraulic motor 26 has motor shafts 27a and 27b at both ends. Motor shafts 27a and 27b of the hydraulic motor 26 disposed between the tires 7a and 7b are fixed to the wheel hubs 29a and 29b of the tires 7a and 7b, respectively, and disposed between the tires 7c and 7d. The motor shafts 27a and 27b of the hydraulic motor 26 are fixed to respective wheel hubs (not shown) of the tires 7c and 7d.
[0022]
In addition, as shown in FIGS. 1 and 2, an engine 30 is arranged in front of the cabin 3 with its crankshaft (not shown) directed in the width direction of the vehicle body 2, so-called a horizontal position. By arranging the engine 30 in the horizontal direction in this manner, the weight distribution of the vehicle is not deviated to the front, and the front and rear weight balance of the vehicle is secured. In FIG. 1, reference numeral 2a denotes an opening / closing cover for checking the engine, which is pivotally attached to the vehicle body 2 at a front end thereof and can be opened / closed.
[0023]
A hydraulic pump 31 is attached to one end (left end) of the engine 30 in the width direction of the vehicle body 2. The hydraulic pump 31 is driven by power transmission from the engine 30 and sends out hydraulic oil, and one end of each of two hydraulic pipes 32a and 32b is connected. As shown in FIG. 2, the other end of each of the hydraulic pipes 32a and 32b extends substantially horizontally toward the rear side on the left side of the cabin 3, and is then disposed above the tire 7b and the tire 7c. It is connected to the valve block 33. The valve block 33 is disposed behind the cabin 3, and one end of each of two branch pipes 34a and 34b is connected to both sides thereof. The other ends of the branch pipes 34a and 34b extend downward from both sides of the valve block 33 and are connected to the left and right hydraulic motors 26. In FIG. 1, reference numeral 2b denotes an opening / closing cover for inspecting the valve block 33, the branch pipes 34a, 34b, and the like. Reference numeral 2c denotes an opening / closing door for checking the hydraulic pipes 32a, 32b and the like, and is pivotally attached to the vehicle body 2 at a front end thereof so as to be openable / closable.
[0024]
Then, hydraulic oil is sent from the hydraulic pump 31 to the valve block 33 via the hydraulic pipe 32a (or 32b), and hydraulic oil is supplied from the valve block 33 to each hydraulic motor 26 via the branch pipe 34a (or 34b). By supplying, each hydraulic motor 26 is driven separately. By such driving, the tires 7a to 7d rotate forward or backward, and the tire roller 1 with the cabin travels forward or backward. When the vehicle turns, the differential between the driving wheels 5 causes the load on the inner and outer wheels to change, so that the hydraulic motor 26 on the outer wheel side with a smaller load is more activated than the hydraulic motor 26 on the inner wheel side with a larger load. It is secured by the supply of oil.
[0025]
In the tire roller with a cabin having such a configuration, the engine 30 and the hydraulic pump 31 are arranged in front of the cabin 3, and the hydraulic motor 26, the valve block 33, and the branch pipes 34a and 34b are arranged behind the cabin 3. Since the hydraulic pipes 32a and 32b are arranged on the left side of the cabin 3, the engine 30, the hydraulic pump 31, the hydraulic motor 26, the hydraulic pipes 32a and 32b, the valve block 33 Also, maintenance parts such as the branch pipes 34a and 34b are not arranged. For this reason, the maintenance component can be lifted by the crane during maintenance without removing the cabin 3. As a result, the work of attaching and detaching the cabin 3 at the time of maintenance, which is conventionally required, becomes unnecessary, and the maintenance work can be performed efficiently and in a short time.
[0026]
Further, since the maintenance parts are arranged in front of, behind and on the side of the cabin 3, even when the maintenance parts are not lifted by the crane, the opening / closing covers 2a and 2c and the opening / closing doors arranged corresponding to the positions of the respective maintenance parts. Maintenance work can be easily performed simply by opening 2c.
Furthermore, since there are no maintenance parts below the driver's seat floor of the cabin 3, the driver's seat floor of the cabin 3 can be lowered, and the position of the cabin 3 can be lowered, thereby lowering the vehicle height. .
[0027]
Further, since it is not necessary to consider the removal of the cabin 3, the rigidity of the cabin 3 can be increased by making the cabin 3 a rigid structure having a substantially box shape, as described above. Therefore, the hermeticity of the cabin 3 can be greatly improved.
Furthermore, since the hydraulic motor is constituted by the pair of hydraulic motors 26, a reduction gear, a differential gear, a chain mechanism, and the like are not required, and the number of parts can be greatly reduced. In addition to simplifying the work of assembling the parts, the degree of freedom in designing the arrangement of the parts is greatly improved.
[0028]
In the above embodiment, the engine 30 is arranged with its crankshaft directed in the width direction of the vehicle body 2. Alternatively, the engine 30 is moved forward of the cabin 3 and the crankshaft is moved forward and rearward of the vehicle body 2. You may arrange | position to a direction. However, in this case, it is difficult to design a front view, and the center of gravity of the engine 30 may move forward, so that the weight distribution of the vehicle may be biased forward. Design considerations such as appropriately adjusting the arrangement and weight of the parts are required.
[0029]
As shown in FIG. 4, the engine 30 is arranged on the left side in the width direction of the cabin 3 with the crankshaft facing the front and rear direction of the cabin 3, that is, in a so-called vertical position, and the hydraulic pump 31 and the hydraulic piping 32 a, Similarly, the hydraulic motor 26, the valve block 33, and the branch pipes 34a and 34b are arranged behind the cabin 3 so that the driver's seat 8 of the cabin 3 has a floor 32b. The maintenance component may not be disposed below. However, also in this case, since the center of gravity of the engine 30 may move in the lateral direction and the weight distribution of the vehicle may be shifted in the lateral direction, the arrangement and weight of the other parts may be changed so as not to impair the weight balance of the vehicle. Design considerations such as appropriate adjustment are required. In FIG. 4, reference numeral 35 denotes an opening / closing door for engine inspection.
[0030]
Further, in the above embodiment, the guide wheel 4 and the drive wheel 5 are constituted by a plurality of tires, but the guide wheel 4 may be constituted by a steel drum-shaped rolling wheel.
[0031]
【The invention's effect】
As apparent from the above description, according to the invention of claim 1 Symbol placement, the lifting by crane maintenance parts during maintenance, it is possible to perform without removing the cabin, for maintenance was conventionally required This eliminates the need to install and remove the cabin, making maintenance work efficient and in a short time.Also, even when maintenance parts are not lifted by a crane, they are arranged corresponding to the position of each maintenance part. The effect is obtained that the maintenance work can be easily performed simply by opening the openable cover or the openable door.
[0032]
In addition, since the cabin does not have to be removed during maintenance, the rigidity of the cabin can be increased by making the cabin a strong structure, and the cabin can be sufficiently sealed at the mounting portion of the cabin to the vehicle body, so that the cabin is sealed. The effect that the property can be improved is acquired.
Furthermore, since there are no maintenance parts below the driver's seat floor of the cabin, the driver's seat floor of the cabin can be lowered, so that the cabin position can be lowered and the vehicle height can be reduced. can get.
[0033]
According to the second aspect of the present invention, in addition to the configuration of the first aspect, by arranging the engine so-called laterally, the weight distribution of the vehicle is not biased forward so that the vehicle can be well balanced in weight distribution. The effect of being able to secure is obtained.
According to the third aspect of the present invention, in addition to the configuration of the first or second aspect , the cabin is formed in a substantially box shape and fixed to the vehicle body, so that the cabin has a more rigid structure to further increase rigidity. It is possible to obtain an effect that the size of the cabin can be increased, and the sealing performance of the cabin mounting portion with respect to the vehicle body is further improved, so that the sealing performance of the cabin can be further improved.
[0034]
According to the fourth aspect of the present invention, in addition to the configuration of any one of the first to third aspects, a pair of hydraulic motors each having a motor shaft fixed to each of the left and right rear wheels is provided. By using a motor, the number of parts of the power transmission unit can be reduced, so that the weight of each component can be reduced, the work of assembling the parts can be simplified, and the arrangement of the parts can be reduced. The effect of greatly improving the degree of freedom in designing is obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory side view in which a part of a tire roller with a cabin according to an embodiment of the present invention is cut away.
FIG. 2 is an explanatory plan view for explaining the inside of a tire roller with a cabin.
FIG. 3 is a sectional view taken along the line [3]-[3] in FIG. 1;
FIG. 4 is an explanatory plan view for explaining another embodiment of the present invention.
FIG. 5 is an explanatory side sectional view for explaining an internal structure of a conventional tire roller with a cabin.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Tire roller with cabin 2 ... Body 3 ... Cabin 5 ... Drive wheel (rear wheel)
26 hydraulic motors 27a, 27b motor shaft 30 engine 31 hydraulic pumps 32a, 32b hydraulic piping

Claims (4)

An engine, a hydraulic motor that transmits power of the engine to a rear wheel via a hydraulic pump, and guides hydraulic oil interposed between the hydraulic pump and the hydraulic motor and sent from the hydraulic pump to the hydraulic motor. In a pressure roller with a cabin provided with a hydraulic pipe,
A cabin wherein the engine and the hydraulic pump are arranged in front of the cabin, the hydraulic motor is arranged behind the cabin, and the hydraulic piping is arranged laterally of the cabin. Roller with roller. The compaction roller with a cabin according to claim 1, wherein the engine is arranged with its crankshaft directed in the width direction of the vehicle body. The rolling roller with a cabin according to claim 1 or 2 , wherein the cabin is formed in a substantially box shape by a roof, a floor, front, rear, left and right side members, and is fixed to a vehicle body. The cabin according to any one of claims 1 to 3 , wherein the hydraulic motor is constituted by a pair of hydraulic motors each having a motor shaft fixed to each of the left and right rear wheels. Rolling roller.

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