JPS6126413Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sealing device for a hopper.

For example, an asphalt finisher used to pave road surfaces has a hopper device into which mixed material is input. Some models have wings that can be lifted about the longitudinal and lateral axes so that they can be folded up for storage. In this type of hopper device, in order to enable each wing to be lifted around the front-rear axis and the left-right axis, a gap surrounded by each wing is provided at the intersection of the two axes. Therefore, in order to prevent the mixture from leaking through these gaps, conventionally the gap was covered with a thick rubber sheet material that took heat into account, and the corners of the rubber sheet material were fixed to each wing with mounting bolts.

However, since the corners of the rubber sheet material installed as described above are fixed, each time each wing is lifted, the central portion suddenly curves and bulges, causing the rubber sheet material to When excessive force is applied to these parts, they tend to deteriorate, shortening their lifespans and requiring a great deal of time to replace them. Therefore, the sheet function with sufficient gaps could not be achieved, and furthermore, the rubber sheet material had to be replaced frequently, which caused problems such as interfering with paving work.

This invention was created in view of the above points.In other words, this invention does not apply excessive force to the sealing material even when each wing is lifted, extending the life of the sealing material, and ensuring sufficient clearance. It is an object of the present invention to provide a sealing device for a hopper, which can ensure the sealing function of the hopper and which can replace the sealing material in an extremely short time.

Therefore, in order to achieve this purpose, this invention uses a sealing material that is formed into a plate shape from a flexible material and covered at the intersection of the rotational axes in two directions, which is the lift center of the hopper wing. , at least a plurality of protection members fixed to the wings of each of the hoppers and fitting and holding each corner of the sealing material, and the sealing material is arranged between the protection members along the wings of each hopper It is characterized by being able to slide.

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

FIG. 1 shows an asphalt finisher equipped with a hopper sealing device according to this invention, and a hopper device 2 into which asphalt mixture is introduced is provided on the front side of the machine body 1. First, the configuration of this hopper device 2 will be explained with reference to FIG. Left and right rear wings 5, 6 are attached to the left and right sides of the feeders 4, 4 that feed asphalt mixture to the screed 3 at the rear of the machine body 1, so as to be able to be lifted in the left and right directions around the rotation axes -, -. Further, left and right front wings 7, 8 and a center wing 9 are attached to the front sides of the rear wings 5, 6, and the rear parts of the front wings 7, 8 are attached to the front parts of the rear wings 5, 6, respectively. has been done.

The front wings 7, 8 have rotating shafts -, -
The front wings 7, 8 and the center wing 9 are liftable in the front-rear direction about the rotation axis.

Next, the seal devices 11 and 12 provided in the gaps 10 and 10 at the intersection of the rotating shafts -, -, - will be explained with reference to FIGS. 2 to 4. The sealing device 11 is made of a flexible material with excellent heat resistance and abrasion resistance, such as synthetic rubber, and includes a substantially square plate sealing material 13 that covers the gap 10 on the left side, and The sealing material 1 is fixed to each corner of the front wing 17, the center wing 9, and the rear wing 5 forming the
Protective member 1 into which the three corners 13a of 3 are fitted
4, 15, 16, and the protection members 14, 15, 1
Inset portions 14a, 15a, 1 surrounded by 6, front wing 7, center wing 9, and rear wing 5
6a, and the corner 13a of the sealing material 13
L-shaped contact members 14b, 15b,
16b.

The corner portion 13b of the sealing material 13 located on the feeder 4 side is cut off diagonally, and the thickness of the sealing material 13 is made thick in consideration of generated heat and wear. is at least larger than the size of the gap 10. Further, the protective members 14, 15, and 16 have the same shape, and the fitting portions 14a, 15a, and 16a have a space large enough to allow the corner portion 13a of the sealing material 13 to be inserted therein. The upper surfaces of the protective members 14, 15, and 16 are sloped with an extremely small slope on the front wing 7, center wing 9, and rear wing 5, which facilitates the flow of the mixture inside the hopper device 2. This is due to the fact that it was taken into consideration to reduce the chance of hitting objects such as Scotch.

Furthermore, the contact members 14b, 15b, 16b
has a circular cross-section, each corner 13a is fitted into the fitting part 14a, 15a, 16a,
In addition, when the front wing 7, the center wing 9, and the rear wing 5 are not lifted, the contact members 14b, 15b, 16b and the corresponding corner portions 1
A spacing S is formed between 3a.

Further, the sealing device 12 has the same configuration as the sealing device 11 described above and is symmetrical, and has a sealing material 17 equivalent to the sealing material 13 described above, and three corners of the sealing material 17 are fitted. , protective members 18, 19, 20 having the same shape as the protective members 14, 15, 16, and the protective member 1 (not shown).
8, 19, and 20, and has contact members having the same shape as the above-mentioned contact members 14b, 15b, and 16c.

Next, the operation of the above configuration will be explained.
Incidentally, since the sealing devices 11 and 12 have the same function, the function of the sealing device 11 will be mainly explained with reference to FIG. 4B.

When the asphalt finisher is performing paving work, the front wings 7, 8, the center wing 9, and the rear wings 5, 6 are used to feed the mixed material input into the hopper device 2 to the feeders 4, 4.
is appropriately lifted around the rotation axis -, -, -. For example, when the front wing 7 and the rear wing 5 are lifted around the rotation axis, the sealing material 13 is gently curved along the front wing 7, the rear wing 5, and the center wing 9, as shown in FIG. 4B. Then, each corner 13a slides by a distance S in the fitted portions 14a, 15a, 16a and comes into contact with the abutting members 14b, 15b, 16b. From this, the corner 13a is the inset part 14.
a, 15a, and 16a are not wedged. Similarly, even when the front wing 7 and the center wing 9 are lifted, the sealing material 13 is gently curved. Therefore, even if the front wing 7, center wing 9, and rear wing 5 are lifted, the sealing material 13
The sharp curvature causes the parts to bulge out, making them less susceptible to deterioration and significantly extending their lifespan. From this, the gap 1
0 sealing function can be ensured sufficiently.

Also, when the front wing 8 and the rear wing 6 are lifted, or when the front wing 8 and the center wing 9 are lifted, the sealing device 12 causes the sheet material 17 to be gently curved in the same manner as the sealing device 11. Therefore, the sealing function of the gap 10 can be sufficiently ensured.

Note that the sheet materials 13 and 17 do not come off the protective members 14, 15, 16, 18, 19, and 20 even if the pressure of the composite material or the frequency of lift operations of each wing is high.

Next, when cleaning the hopper device 2, the composite material on each wing is removed using a scoop or the like, but at that time, the sealing materials 13, 17 are
6, 18, 19, and 20, there is no risk that the corners of the sealing materials 13 and 17 will be damaged. In addition, the protective members 14, 1
5, 16, 18, 19, and 20 have gentle slopes, so they do not interfere with cleaning.

In this way, since the corners of the sealing materials 13 and 17 are fitted and held in the protective members 14, 15, 16, 18, 19, and 20, the sealing materials 13,
This means that the sealing function can be fully performed without applying excessive force to 17.

In addition, when replacing the sealing materials 13 and 17, it is sufficient to simply bend the worn sealing materials 13 and 17, remove the corners from the protective members, and fit the corners of the new sealing materials into each protective member. It can be replaced in time.

In addition, any one of the protective members and the sealing material 13,
If you fix one corner of 17 with a bolt etc.,
The sealing materials 13 and 17 are held even more reliably.

As explained above, according to this invention, there is a sealing material formed into a plate shape from a flexible material and covered at the intersection of the rotating shafts in two directions, which are the lift centers of the hopper wings, and each of the hopper wings. a plurality of protection members fixedly attached to the hopper and fitting and holding each corner of the sealing material, and the sealing material is configured to be able to slide between the protection members along the wings of each hopper. Therefore, even when each wing is lifted, no excessive force is applied to the sealing material, extending the life of the sealing material, and preventing damage to the corners, ensuring a sufficient sealing function in the gaps. In addition to being effective, there is also the effect that the sealing material can be replaced in an extremely short period of time, and therefore the paving workability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view of an asphalt finisher, FIG. 2 is a perspective view showing a hopper sealing device according to this invention, FIG. 3 is a plan view of the hopper sealing device, and FIG. 4A is a A sectional view taken along the - line in FIG. 3 and FIG. 4B are sectional views showing the hopper sealing device when the front wing is lifted. 11, 12... Seal device, 13, 17... Seal material, 14, 15, 16, 18, 19, 20...
...Protection member.

Claims (1)

[Scope of utility model registration request] A sealing material formed into a plate shape from a flexible material and covering the intersection of two rotating shafts, which are the lift centers of the hopper wings, and a sealing material fixed to the wings of each hopper and covered with the A sealing device for a hopper, comprising at least a plurality of protective members that fit and hold each corner, and the sealing material is slidable between the protective members along the wings of each hopper. .