JPS6131053Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hopper wing lifting device that raises a hopper wing provided on a construction machine.

A hopper installed on construction machinery, such as an asphalt finisher or a base paver, uses an operation cylinder to raise the wing to a large angle of elevation, and transfers the material put into the hopper to the center and rear of the hopper. Send it to the material feeder,
It is important to ensure that no composite material remains on the wing.
This is desirable in order to smoothly supply the mixture to the mixture feeder.

However, in conventional hoppers of this type, an operating cylinder is attached to the bottom of the hopper due to its structural limitations, but if a long stroke operating cylinder is attached to raise the wing at a large lifting angle, it will be difficult to place the construction machine on the truck. When this occurs, the operating cylinder hits the container, causing problems in loading.
For this reason, in reality, the stroke of the operating cylinder cannot be long and it is necessary to use an operating cylinder with a small stroke.As a result, it is not possible to secure a large lifting angle for the wing, resulting in residual material remaining on the wing. There was an inconvenience that the mixture could not be smoothly supplied to the feeder side.

This invention was made in view of the above points, and the purpose of this invention is to provide a hopper wing lifting device that can obtain a large lifting angle with a small stroke and does not leave any mixture residue on the wing. shall be.

Therefore, in order to achieve this object, the hopper wing lifting device of this invention is a hopper wing lifting device for lifting the rotating end side of the loading surface of a hopper wing mounted on a construction machine, in which one end side is a fixed part below the hopper wing. An arm bracket is attached to the arm bracket and a roller follower is attached to the other end thereof, and the piston rod is attached to the fixed part at a predetermined angle with respect to the horizontal, and the rod head is connected to the longitudinal center position of the arm bracket so that the piston rod is extended. an operating cylinder that raises the roller follower at the other end of the arm bracket with one end as the center of rotation; and a rising angle multiplier member that raises the rotation end side by rolling the roller follower and raising the roller follower.

This invention will be explained below with reference to an illustrated embodiment.

Figure 1 shows an asphalt finish equipped with a hopper wing lifting device according to this invention. In the figure, 1 is the fuselage, and on the front chassis frame F of this fuselage 1, asphalt composite material is
Hopper 2 where AM (hereinafter referred to as composite material) is introduced
However, at the rear of this machine 1, there is also a screw 3 that spreads the composite material AM to a predetermined pavement width, and the expanded composite material.
Each vehicle is equipped with a screed 4 for performing AM pavement construction.

The hopper 2 has left and right rear wings 5 and 6, which can be raised in the left and right directions of the aircraft 1 by means of an operating cylinder OC ₁ , respectively, about rotational fulcrum axes - and -, as shown in Fig. 2, and the left and right rear wings. wing 5,
Left and right front wings 8, 9 are installed in a state inscribed on the front side of the aircraft 6, and are capable of being raised from a horizontal state by means of hopper wing lifting devices 7, 7 in the rearward direction of the fuselage 1 around the rotation fulcrum axis. A central wing 10 is provided between the left and right front wings 8 and 9 and is capable of being raised from a horizontal state by the above-mentioned hopper wing lifting devices 7 and 7.

Next, the hopper wing lifting devices 7, 7 will be described in detail.

As shown in FIGS. 3 and 4, the hopper wing lifting devices 7, 7 have two pairs of bilobed brackets 11, 11 provided protruding from the front end of the chassis frame F, respectively, so that the cylinder bottom side of the babel 12 is attached to the two sets of bilobed brackets 11, 11, as shown in FIGS. Pivotally supported operation cylinders 13, 13, which are hydraulically driven, for example, and a mounting piece 14, one end of which is erected on the rear side of the chassis frame F, with one end serving as a fixed part.
14 via a fulcrum shaft 15, and a roller follower 1 is rotatably attached to the other end located in front of the chassis frame F.
6 and 16 are attached, and an arm bracket 17 to which the rod heads 13a, 13a of the operating cylinders 13, 13 are rotatably attached at the central position in the longitudinal direction; It has a rising angle multiplier member 18 having a substantially V-shaped cross section and serving as a direct-acting cam that is attached to the back surface of the rotating end 10b and guides the roller followers 16, 16.

The operation cylinders 13, 13 are small in size, with cylinder rods 13b, 13b having a small stroke S as shown in FIG. θ,
For example, the cylinder rods 13b, 13b are attached at an angle of θ=45°, and the cylinder rods 13b are extended obliquely upward. Further, the rising angle multiplier member 18 has a full width l equal to the roller support width L formed by the roller followers 16, 16 of the arm bracket 17, and is inserted into the central gap 17a of the arm bracket 17. It has a size that can be adjusted freely. The rising angle multiplier 18 is activated by the left and right front wings 8, 9 and the center wing 1 by the extension operation of the operating cylinders 13, 13.
This is for multiplying the climbing angle of 0, and as shown in Figs. 5 and 6, it forms an angle α with the center wing 10, for example α = 45°, and is directed diagonally downward in front of the aircraft 1. Roller follower guide surface 18a
have.

Therefore, as shown in FIG.
3, 13 are contracted, the roller followers 16, 16 are positioned at the lower end of the roller follower guide surface 18a, and the center wing 10 and left and right front wings 8, 9 are held in a substantially horizontal state, and the operating cylinders 13, 13 is in the extended state, as shown in FIG. 6, it is located on the upper end side of the roller follower guide surface 18a, and is configured to be able to raise the center wing 10 and the left and right front wings 8, 9 by a rising angle β. .

Furthermore, between the left and right rear wings 5 and 6 and behind the center wing 10, there are mix material feeders 19 and 1 for conveying the mix material AM in the hopper 2 to the screw 3 side.
9 is equipped.

Next, the operation of the above configuration will be explained.

When the composite material AM is fed into the hopper 2, as shown in Fig. 2, the left and right rear wings 5, 6 and the left and right front wings 8, 9 are raised around the rotational fulcrum shafts -, -, and the mixture is fed into the hopper 2. The mixture AM is collected on the central wing 10 and the mixture feeder 19. Next, the hopper wing raising devices 7, 7 are operated, and the left and right front wings 8, 9 and the center wing 10 are raised toward the rear of the fuselage 1 about the pivot axis. Specifically, as shown in FIGS. 5 and 6, when the operating cylinders 13, 13 of the hopper wing lifting devices 7, 7 are synchronously extended, the roller followers 16, 16 of the arm brackets 17, 17 The side is the fulcrum shaft 15,1
5 in the clockwise direction in FIG. 6. As the roller followers 16, 16 rise, the roller follower guide surfaces 18a, 1 of the rising angle multipliers 18, 18 move upward.
8a, the rising angle multiplier member 18,1
8 and the rotating end 10b of the center wing 10, and the left and right front wings 8 and 9 are pushed up and smoothly raised to a rising angle β. This rising angle β is the operating cylinder 1
It is clear that the rod head of the operating cylinder with the same stroke as in 3 and 13 is mounted directly on the underside of the center wing, and the angle of elevation is multiplied compared to that when the center wing is raised by the extension action of the operating cylinder. be. That is, the roller follower guide surfaces 18a, 18a, which serve as direct-acting cams for the roller followers 16, 16 as followers, are formed to be inclined downward at an angle α with respect to the mixture loading surface 10a of the central wing 10. Even if the operating cylinders 13, 13 are extended by a small stroke S, the front end of the central wing 10 will be raised by an amount M several times the small stroke S, as shown in FIGS. 5 and 6. , a large ascending angle β
will be obtained. Therefore, the composite material AM on the center wing 10 and the left and right front wings 8, 9, which have been raised at a large ascending angle β, is transferred to the composite material feeder 19.
It is quickly and reliably fed upwards, and there is no risk of any mixture remaining on the center wing 10 and the left and right front wings 8 and 9.

Then, the composite material AM on the composite material feeder 19, 19
is sent to a screed 3 and paved by a screed 4.

When the mixture AM is sent to the mixture feeders 19, 19, the operation cylinders 13, 13 are immediately contracted, and the roller followers 16, 16 are rolled on the roller follower guide surfaces 18a, 18a, and the center front wing 10 and The left and right front wings 8, 9 are lowered and held substantially horizontally. In addition, operation cylinder 1
Since the strokes of the cylinders 3 and 13 are small and compact, the operation cylinders 13 and 13 do not become an obstacle when the load stabilizer is placed on a truck. Furthermore, the above-mentioned hopper wing lifting device is not limited to asphalt finishers.
It can also be applied to other construction machines such as base paver.

As explained above, according to this invention, the roller follower of the arm bracket, which is raised by the extension action of the operating cylinder, is attached to the back surface of the rotating end side of the loading surface of the wing at a predetermined angle with respect to the loading surface. Since we have installed a cam mechanism that causes the multiplier to roll and raise the wing, the operating cylinder has a smaller stroke than the conventional device that connects the operating cylinder directly to the wing and raises the wing by the extension of the operating cylinder. Since the wing can be raised at a large angle, it is possible not only to smoothly feed the mixture to the mixture feeder without leaving any mixture on the wing, but also to reduce the stroke of the operation cylinder, making it easier to transport the truck. This has the effect of eliminating hindrances when loading construction machinery.

[Brief explanation of the drawing]

Fig. 1 is a side view of an asphalt finisher equipped with the hopper wing lifting device according to this invention, Fig. 2 is a perspective view of the hopper, Fig. 3 is an enlarged perspective view of the hopper wing lifting device, and Fig. 4 is a plan view of the lifting device, FIG. 5 is an explanatory diagram of the operation of the lifting device showing a state in which the operating cylinder is retracted, and FIG. 6 is a state in which the operating cylinder is extended and the hopper wing is raised. It is an explanatory diagram of the operation of the same lifting device. 2... Hoppa, 7, 7... Hoppa wing lifting device, 8, 9... Left and right front wings, 10... Center wing, 13, 13... Operation cylinder, 16,
16...Roller follower, 17...Arm bracket, 18...Rising angle multiplier, 18a...Roller follower guide surface, F...Chassis frame as a fixed part.

Claims (1)

[Scope of utility model registration request] A hopper wing lifting device for raising the rotating end side of the loading surface of a hopper wing mounted on construction machinery includes an arm bracket whose one end is attached to a lower fixed part of the hopper wing and a roller follower is attached to the other end, and a horizontal The piston rod is attached to the fixed part at a predetermined angle relative to the piston rod, and the rod head is connected to the longitudinal center position of the arm bracket, and the piston rod is extended to raise the roller follower at the other end of the arm bracket with the one end as the center of rotation. an operating cylinder and a rising angle that is attached to the back surface of the rotational end side of the loading surface of the hopper wing at a predetermined angle with respect to the loading surface, and that the roller follower is rolled and the rotational end side is raised by the rise of the roller follower; A hopper wing lifting device characterized by comprising a multiplier member.