JP3587990B2 - Matting machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a driving device mounted on a leveling machine such as a relatively large asphalt finisher and a leveling machine equipped with the same.
[0002]
[Prior art]
As a leveling machine, the front running hopper, the rear hopper, the front spreading screw that spreads the paving material sent from the front hopper to the left and right, and the paving material sent from the rear hopper to the left and right. A rear spreading screw that spreads to the front, a front screed that spreads the paving material spread by the front spreading screw, a rear screed that spreads the paving material spread by the rear spreading screw, and the driving device Is proposed in which two types of pavement materials can be piled up and down in a single pavement operation and spread on the road surface at the same time (Japanese Patent Publication No. 9-505370).
[0003]
[Problems to be solved by the invention]
This leveling machine is equipped with two sets of front and rear hoppers and screeds, so it is inevitably larger in size than a normal leveling machine, and the operator's front view in the driver's seat at the rear of the vehicle deteriorates. easy.
[0004]
Therefore, in the above flattening machine, the driver's seat is provided at a high position to widen the field of view of the operator, but when the driver's seat is high, when the flattening machine is loaded on a transport trailer and forwarded, There is a problem that the vehicle cannot pass through a tunnel with a low ceiling. Also, getting on and off the operator is very inconvenient.
[0005]
The present invention, at the time of paving operation, ShikiHitoshi machine equipped with luck UtateSo location that can raise the driver's seat or the like spread forward view of the operator, also lowers the driver's seat or the like at the time of forwarding to lower the height The purpose is to provide.
Another object of the present invention is to provide a ShikiHitoshi machines getting on and off the operator equipped with easy luck UtateSo location.
[0006]
[Means for Solving the Problems]
In order to achieve at least one of the above objects, an invention according to claim 1 is a front spreader for spreading a paving material sent from a front hopper, a rear hopper, and a front hopper to a vehicle. The screw, the rear spreading screw that spreads the paving material sent from the rear hopper to the left and right, the front screed that spreads the paving material spread with the front spreading screw, and the rear spreading screw are spread. Rear screed to spread the paving material, and a flattening machine equipped with an operating device provided behind the rear hopper,
The self-propelled vehicle is provided with a loading feeder for loading the paving material put in the receiving hopper on the front hopper and the rear hopper so as to be vertically movable up and down by a pivot, and the front plate of the rear hopper is tilted forward. The receiving hopper can be folded on the loading feeder, and the driving device can move the floor body up and down along the vertical rail on a vertical rail erected on the self-propelled vehicle. And a driver's seat and driving equipment are mounted on the floor, and a lift device for raising and lowering the floor is provided on the self-propelled vehicle.
[0007]
In this means, the paving material put into the receiving hopper is loaded on the front hopper and the rear hopper, and the two types of paving materials are laid up and down at the same time, and the laying work is performed without difficulty. It can be carried out. When performing the leveling work, the operator's seat is lowered together with the floor by the operation of the elevating device, and after the operator is seated, the operation is started by raising the driver's seat together with the floor. The floor is lowered when the operator gets out of the driver's seat after finishing the leveling operation or when the flattening machine is transported by a trailer. Then, the operator can easily get on and off the driving device without using a ladder or the like.
[0008]
According to a second aspect of the present invention, in the flattening machine , the lifting device includes a lifting cylinder, a sprocket that is moved up and down by the lifting cylinder, and a member wound on the sprocket and having one end connected to the vehicle-side vehicle. And a cable whose other end is fixed to a member on the floor side.
In this configuration, when the sprocket is moved up and down by the elevating cylinder, the floor rises via the cable. The vertical movement distance of the floor at this time is twice the vertical stroke of the sprocket because the rope is wound around the sprocket and turned back.
[0009]
According to a third aspect of the present invention, in the above flattening machine , a pair of left and right driver's seats is mounted on the floor so as to be movable left and right.
In this configuration, the operator selects one driver's seat suitable for the flooring condition and the like, sits down, and operates the machine. In addition, the driver's seat is moved to the left and right as necessary, thereby placing the body in an optimal driving position.
[0010]
According to a fourth aspect of the present invention, in the flattening machine according to the third aspect , the steering handle of the driving device is configured to be movable left and right.
In the case of this flattening machine , the steering wheel is moved in front of an operator sitting in one of the left and right driver's seats to operate the machine.
[0013]
According to a fifth aspect of the present invention, in the flattening machine according to the fifth aspect, a vertical rail is attached to a lift frame on a rear wall of the rear hopper. In this configuration, the rear wall of the rear hopper also serves to fix the driving device.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
In the figure, reference numeral 1 denotes a self-propelled vehicle. The self-propelled vehicle 1 includes a front hopper 2, a rear hopper 3, a front spreading screw 5 that spreads the paving material Ha sent from the front hopper 2 by the bar feeder 4 to the left and right, and discharges from the rear hopper 3. A rear spreading screw 7 for spreading the paving material Hb spread left and right, a front screed 8 for spreading the paving material Ha spread by the front spreading screw 5, and a paving material spread by the rear spreading screw 7. A rear screed 9 for laying Hb, a receiving hopper 10 for paving material, a loading feeder 11, and an operating device A are mounted.
[0015]
The self-propelled vehicle 1 has a pair of right and left crawlers 14 and 15 (only the one on the near side is shown in the figure in FIG. 1), and travels by driving them. As is well known, the rear screed 9 is suspended from the rear ends of a pair of left and right leveling arms 16 (only the front side is shown in FIG. 1), and the front screed 8 is a spreading screw. It is suspended vertically between the leveling arms 16 and 16 between 5 and 7.
[0016]
The receiving hopper 10 receives the paving material from the dump truck T, is supported by a base 18 having support wheels 17, and is mounted on the loading feeder 11 as shown by a two-dot chain line in FIG. 18 can be folded together.
[0017]
The loading feeder 11 carries the pavement material loaded into the receiving hopper 10 by a flight attached to an endless chain and loads the paving material on the front hopper 2 and the rear hopper 3. It is mounted so that it can be turned upside down. The front plate 3a of the rear hopper 3 can be tilted forward, so that the loading feeder 11 can be laid almost horizontally.
[0018]
The loading feeder 11 has a discharge port which is openable and closable with a lid at an intermediate portion between both ends, the discharge port is opened to drop the pavement material into the front hopper 2, and the discharge port is closed to close the pavement material. Can be carried to the upper end of the loading feeder 11 and dropped therefrom to the rear hopper 3.
[0019]
The driving device A is directly or indirectly related to the leveling of the paving materials Ha and Hb such as the self-propelled vehicle 1, the bar feeder 4, the spreading screws 5, 7, the screeds 8, 9, and the loading feeder 11. A machine is operated by controlling all operations and the like, and a floor 23 is mounted on a pair of left and right vertical rails 22 so as to be able to move up and down, and a switchboard box 24, a control box 25, Driving equipment such as an instrument box 26 or a steering handle 27 and a pair of left and right driver's seats 28, 28 are mounted, and the self-propelled vehicle 1 is provided with a lifting device 29 for raising and lowering the floor 23.
[0020]
The pair of left and right vertical rails 22 each have a dovetail structure, and are attached to a gate-shaped lift frame 31 erected on the vehicle 1 along the rear wall 3b of the rear hopper 3 so as to face each other. Upper and lower members 32 each having a dovetail groove are fitted to each of the vertical rails 22, and support the floor 23 horizontally via a bracket 33. The floor 23 is formed of mesh metal and can move up and down along the vertical rails 22.
[0021]
The control box 25 and the steering handle 27 are provided on a wiring board box 24 provided at the front of the floor 23 so as to be movable left and right along a horizontal rail 35 having a dovetail structure. Reference numeral 28 denotes a pair of front and rear cylindrical members 36 (FIG. 8) horizontally fixed to the floor 23, each of which has a support rod 37 inserted therein, and is arranged side by side at the rear of the floor 23 so as to be movable left and right. Each driver's seat 28 can be fixed to the floor 23 by attaching a stopper pin 38 to the support rod 37. A handrail 39 is provided at the rear center of the floor 23 so as to be openable and closable, so that the operator can get on and off the floor 23 freely.
[0022]
The electric wires and the like that connect the switchboard box 24 and the like to the control box 25 or the steering handle 27 are pulled out from the horizontally long through holes 24a (FIG. 3) of the wiring box 24 and connected to the control box 25 and the like. ing.
[0023]
The lifting device 29 includes a pair of lifting cylinders 41, a sprocket 42, and a chain 43. The elevating cylinder 41 is vertically attached to a lower portion of the lift frame 31 on the vehicle 1, and the sprocket 42 is rotatably attached to a piston rod 41 a of the elevating cylinder 41. The chain 43 is wound around the sprocket 42 and turned up and down. One lower end of the chain 43 is fixed to the lower portion of the lift frame 31, and the other lower end is fixed to the bracket 33.
[0024]
Accordingly, when the sprocket 42 is raised by the lifting cylinder 41, the floor 23 rises via the chain 43 and the bracket 33, and when the sprocket 42 is lowered, the floor 23 also lowers. The vertical movement distance of the floor 23 in this case is twice the vertical stroke of the sprocket 42 because the chain 43 is folded up and down by the sprocket 42.
[0025]
As shown in FIG. 9, a pilot operator check valve 45 is provided in the hydraulic circuit of the elevating cylinder 41. The check valve 45 normally stops the flow of working oil from the lower chamber 41b of the elevating cylinder 41, and when hydraulic oil is supplied to the upper chamber 41c, the check valve 45 operates from the lower chamber 41b by the hydraulic oil pressure. Frees oil spills.
The pair of left and right elevating cylinders 41, 41 is extended and contracted in synchronization with each other by a synchronous circuit.
[0026]
Next, the operation of the flattening machine having the above configuration will be described.
First, the raising / lowering cylinder 41 is reduced, the floor 23 is lowered, and the operator selects the driver's seat 28 suitable for the leveling work and sits on it. The elevating cylinder 41 is normally extended and retracted by operating buttons, and the operation buttons are provided on both the floor 23 and the vehicle 1.
[0027]
The operator who arrives at the driver's seat 28 extends the elevating cylinder 41 to raise the floor 23 and draws the control box 25 and the steering handle 27 in front of the operator to operate the machine. Spread. In this case, since the driver's seat 28 is elevated high, the operator has a good front view, and the situation in front, for example, the presence or absence of a worker, the state of the road surface, the receiving situation of the paving material from the dump truck T to the receiving hopper 10. , The operating state of the loading feeder 11 can be accurately grasped.
[0028]
If necessary, the driver's seat 28 is moved right and left. Thereby, for example, even if the loading feeder 11 obstructs the field of view, this can be avoided, and the situation can be easily known by leaning sideways and leaning sideways. .
[0029]
When the operator descends from the driver's seat 28 after finishing the leveling work, the elevator cylinder 41 is contracted to lower the floor 23. Further, in the case such that forward topped with ShikiHitoshi machine on the trailer, in addition to lowering the bed body 23, as two-dot chain line in FIG. 1, while defeat loading feeder 11 substantially horizontally, on which The height of the entire machine is reduced by folding the receiving hopper 10 and the base 18. For this reason, the spreading machine can be smoothly transported without any trouble. In some cases, the floor 23 may be stopped at an intermediate position between the upper and lower sides to perform a spreading operation or the like.
[0030]
The spreading machine shown in the figure is equipped with two sets of front and rear spreading screws 5, 7 and screeds 8, 9 and the like, and two paving materials Ha, Hb are laid up and down at the same time in one paving operation, and are spread at the same time. However, the functions of the spreading screws 5, 7 and the screeds 8, 9 are the same as those of a conventional asphalt finisher having only one set of them.
[0032]
【The invention's effect】
As described above, according to the first aspect of the present invention, the paving material put into the receiving hopper can be loaded on the front hopper and the rear hopper by the loading feeder, and two types of paving work can be performed in one paving operation. The pavement material can be piled up and down and spread at the same time, and a leveling machine with good operability can be obtained. The driver's seat make ShikiHitoshi work is raised together with the floor body, also with lowering the driver's seat, the front plate of the rear hopper contrast to losses substantially horizontally loading feeder Tilt forward thereon By folding the receiving hopper, the height of the entire machine is reduced, and the flattening machine can be smoothly transported by the trailer without any trouble. Therefore, the front view of the operator is widened, the leveling work can be performed smoothly, and the driver's seat, the loading feeder, and the like can be prevented from coming into contact with a tunnel or the like, which is likely to occur during forwarding. In addition, the operator can easily get on and off the vehicle, and there is an effect that the operation burden on the operator is reduced as compared with the case of using a ladder.
[0033]
According to the second aspect of the present invention, it is possible to use an elevating cylinder having a short telescopic stroke, thereby simplifying the structure and reducing the cost.
[0034]
According to the third aspect of the present invention, for example, when paving only one side of the road surface, the operator can see the leveling situation and the like closer by using the driver's seat on the pavement side. Become like In addition, the driver's seat can be moved to the outside of the floor so that the driver can lean on the side, which has an advantage of easy leveling work.
In this leveling machine , if the steering handle of the driving equipment is configured to be movable left and right, the steering operation can be performed smoothly in either driver's seat.
[0035]
According to the fifth aspect of the invention, the rear wall of the rear hopper can be effectively and rationally used, and the cost can be kept low in this respect as well.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a side view of the driving device.
FIG. 3 is also a plan view.
FIG. 4 is a view similarly viewed from behind.
FIG. 5 is a front view of the lifting device.
FIG. 6 is also a side view.
FIG. 7 is a schematic view showing a relationship between a vertical rail and upper and lower members.
FIG. 8 is a cross-sectional view illustrating a relationship between a cylindrical member and a support rod.
FIG. 9 is a hydraulic circuit diagram of a lifting cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Self-propelled vehicle 2 Front hopper 3 Rear hopper 3b Rear wall 4 Bar feeder 5 Front spreading screw 7 Rear spreading screw 8 Front screed 9 Rear screed 10 Receiving hopper 11 Loading feeder 22 Vertical rail 23 Floor 24 Switchboard Box 25 Control box 26 Instrument box 27 Steering handle 28 Driver's seat 29 Lifting device 31 Lift frame 41 Lifting cylinder 41a Piston rod 42 Sprocket 43 Chain (cable)

Claims (5)

For a self-propelled vehicle, a front hopper, a rear hopper, a front spreading screw that spreads the paving material sent from the front hopper left and right, and a rear spray that spreads the paving material sent from the rear hopper left and right. The front screed spreads the paving material spread with the front spreading screw, the front screed spreads the paving material spread with the rear spreading screw, and the rear screed spreads the paving material spread with the rear spreading screw. Leveling machine equipped with the operating device
A loading feeder for loading the paving material charged into the receiving hopper into the front hopper and the rear hopper is pivotally mounted on the self-propelled vehicle so that the paving material can be vertically moved up and down, and the front plate of the rear hopper is forward. The receiving hopper is allowed to be folded on the loading feeder, and the driving device is configured such that a floor is provided along the vertical rail on a vertical rail erected on the self-propelled vehicle. A driver's seat and driving equipment are mounted on the floor, and a lift device for raising and lowering the floor is provided on the self-propelled vehicle. machine. The elevating device includes an elevating cylinder, a sprocket that is moved up and down by the elevating cylinder, and a rope wound around the sprocket and having one end fixed to a member on the self-propelled vehicle and the other end fixed to a member on the floor body side. The flattening machine according to claim 1, further comprising a strip. 3. The leveling machine according to claim 1, wherein a pair of left and right driver's seats are mounted on the floor so as to be movable left and right. 4. The leveling machine according to claim 3, wherein the steering handle of the driving device is movable left and right. The leveling machine according to any one of claims 1 to 4, wherein a vertical rail is attached to a lift frame of a rear wall of the rear hopper.

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