JPS6030030Y2 - Hopper support device in concrete mixer vehicle - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hopper support device in a concrete mixer truck.

Generally, in a concrete mixer truck, a hopper is fixed on a support provided at the rear end of the chassis, and the input port of this hopper is fitted into a charging cylinder of a rotating drum, and the hopper is passed through the batcher plant. Ready-mixed concrete is poured into a rotating drum.

Therefore, when inspecting the inside of the rotating drum, removing solidified waste concrete from inside the drum, or replacing the hopper seal wrapped around the hopper's inlet, it is necessary to move the hopper away from the rotating drum. .

By the way, in order to separate the hopper from the rotating drum, if the hopper is simply fixed to the support with fixing bolts, the hopper is quite heavy, so the hopper must be removed from the support using a crane or the like. First, the work area for inspecting and cleaning the inside of the rotating drum was limited to a location with crane equipment, which was inconvenient.

For this purpose, as shown in FIG. 1, the support part 6 of the hopper 1 is fixed to the pipe 3 fixed to the support base 2 with U bolts 4, and the hopper 1 with the U bolts 4 loosened is centered around the pipe 3. Support devices that can be rotated have been considered, but
In this type of support device, when re-fixing the hopper 1 to the support base 2, it is difficult to align the axis O of the input port 1a of the hopper 1 with the center line of the charging cylinder 5a of the rotating drum 5. Re-fixing work is troublesome.

This idea was made in view of the above circumstances, and the hopper can not only be easily separated from the rotating drum, but also easily re-fixed to the support base. The purpose is to provide a support device.

An embodiment of this invention will be described below with reference to FIGS. 2 to 7.

Reference numeral 11 in the figure is a concrete mixer truck.

A driver's seat 13 is provided at the front end of a chassis 12 of this concrete mixer truck 11, and a rotating drum 14 for stirring fresh concrete is provided at the center thereof.

Furthermore, a support stand 16 for fixing the hopper 15 is provided at the rear end of the chassis 12.

This support stand 16 is connected to support frames 17 that are located on both sides of the rear end of the rotating drum 14 and are provided at the rear end of the chassis 12.
．． 17, and fixing members 18 and 18 made of C-shaped steel that are fixed to the upper ends of each of the support frames 17 and 17 and extend in the front-rear direction.

The support member 2 made of C-shaped steel is connected by the horizontal shafts 19, 19 provided at the rear end portions of the fixing members 18, 18, respectively.
0 is rotatably supported.

That is, as shown in FIGS. 5 to 7, reinforcing plates 21 and 22 are welded to each inner side of the rear end of the fixing member 18 fixed to the support frame 17. A horizontal shaft 19 is attached to .22.

On the other hand, end plates 23, 23 each having a long hole 23a extending in the front-rear direction are welded to both end surfaces of the support member 20.

Then, the horizontal shaft 19 is inserted into the long hole 23a and the flat washer 2
4 and the split pin 25 to prevent the support member 20 from being removed, thereby allowing the support member 20 to freely move back and forth to the fixed member 18.
It is mounted so that it can rotate up and down.

Further, on the upper surface of the support member 20, a locking plate (locking means) 27 to which a reinforcing plate 26 is welded connects one end of the locking plate to the fixing member 18.
Welded in contact with the top surface of the

This locking plate 27 is arranged so that, except when rotating the hopper 15 about the horizontal axis 19, the horizontal axis 19 is positioned at the rear end of the elongated hole 23a, that is, the support member 20 is positioned at the frontmost position. Fixing member 1 with bolts 28 and 28
It is fixed at 8.

In this case, the elongated hole 23a is made to have a slightly larger diameter than the horizontal shaft 19, so that the locking plate 27 can smoothly rotate around the horizontal shaft 19 while contacting the rear edge of the fixing member 18. .

Further, a hopper 15 is attached to a bolt 2 at the center of the support member 20.
9.29. Fixed by

An input port 15a is provided on the side of the hopper 15 on the rotating drum 14 side.

An elastic member 30 such as a rubber plate is wound around approximately 2/3 of the entire outer circumference of the input port 15a, centering on the lower end.
It is fixed to the outer periphery of 5a.

The elastic member 30 protrudes from the tip of the input port 15a, and the protruding portion is fitted into the charging cylinder 14a of the rotating drum 14.

Furthermore, a locking member 32.32 having an angular cross-section is welded to the upper side of the hopper 15 on the rotating drum 14 side. The hopper stay 33 is fixed to the hopper stay 33 with bolts (not shown), thereby fixing the hopper 15 more firmly to the support base 16.

Note that the reference numeral 34 in the figure is a chute for receiving fresh concrete discharged from the rotating drum 14.

Therefore, when removing the hopper 15 fixed to the support base 16 from the rotating drum 14, first remove the bolts fixing the angle iron 32 to the hopper stay 33 and the bolts 28 fixing the locking plate 27 to the fixing member 18. Pull it out.

Next, the hopper 15 and the support member 20 are moved backward through the elongated hole 2.
3a to disengage the elastic member 30 and the charging cylinder 14a, and rotate the hopper 15 together with the support member 20 about the horizontal axis 19.

On the other hand, when re-fixing the hopper 15 to the support base 16, the hopper 15 is fixed until the locking plate 27 comes into contact with the upper surface of the fixing member 18.
is rotated together with the support member 20 about the horizontal axis 19.

Next, the hopper 15 is moved toward the rotating drum 14 together with the support member 20 until the horizontal shaft 19 comes into contact with the rear end of the elongated hole 23a, and the elastic member 30 is moved toward the charging cylinder 14a.
Fit the inner periphery of the

Then, the locking plate 27 is fixed to the fixing member 18 with bolts 28, and the locking member 32 is fixed to the hopper stay 33 with bolts, thereby completing refixing of the hopper 15.

In the above embodiment, the horizontal shaft 19 is connected to the fixing member 18.
, the long holes 23a are provided in the support member 20, but on the contrary, the horizontal shaft 19 is provided in the support member 20, and the long holes 23a are provided in the support member 20.
a may be provided on the fixing member 18, respectively.

Further, in the above embodiment, the locking plate 27 is connected to the support member 20.
Although it is provided on the lower surface of the fixing member 18,
Further, the locking means is not limited to the locking plate 27.

As explained above, according to the hopper support device for a concrete mixer truck according to this invention, the support member to which the hopper is attached to the support base is provided to be movable back and forth and rotatable up and down. Since a locking means is provided between the hopper and the support base to restrict the range of rotation of the support member relative to the support base, the hopper can be easily rotated and separated from the rotating drum. The internal inspection of the drum can be carried out at any time, and the rotational position of the hopper can be regulated by the locking means, so that the axis of the hopper input port can be easily aligned with the axis of the charging cylinder of the rotating drum. It has the effect of being able to match.

[Brief explanation of drawings]

Fig. 1 is a partially omitted side view showing an example of a support device in a conventional concrete mixer truck, Figs. 2 to 7 show an embodiment of this invention, and Fig. 2 is a concrete mixer car according to this invention. Fig. 3 is a partially omitted enlarged view of Fig. 2, Fig. 4 is a view in the direction of the ■ arrow in Fig. 3, Fig. 5 is a plan view showing the main parts of the support device, and Fig. 6 is its The partially cutaway front view, FIG. 7, is a view taken along the line ■-■ in FIG. 6. 14... Rotating drum, 15... Hopper, 16... Support stand, 19... Horizontal axis,
20... Support member, 23a... Elongated hole,
27... Locking plate (locking means).

Claims (1)

[Scope of utility model registration request] A support member is provided on the support base by inserting a horizontal shaft into the elongated hole so that it can move back and forth and rotate up and down, and a hopper for charging fresh concrete into the rotating drum is provided on the support member, A hopper support device for a concrete mixer truck, characterized in that a locking means is provided between the support member and the support base to restrict the range of rotation of the support member with respect to the support base.