JP3195905B2 - Hopper swivel lock device for concrete pump truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete pump truck and, more particularly, to a lock device (hereinafter referred to as a lock device) for engaging and fixing a hopper support on which a hopper for feeding ready-mixed concrete to a concrete pump is mounted. Hopper rotation lock device).

[0002]

2. Description of the Related Art In recent years, concrete pump trucks have
Concrete pump vehicles equipped with concrete pumps such as squeezing type and piston type are widely used. A hopper for efficiently feeding the ready-mixed concrete to the concrete pump is mounted on such a concrete pump truck.

FIG. 10 is a view showing a main part of a concrete pump truck equipped with a squeezing type concrete pump. In this concrete pump truck 51, the body 5
A squeezing pump 53 is mounted at the rear of the hopper 2, and a hopper 55 is mounted on a hopper support (hopper frame) 54 attached to the vehicle body 52.

[0004] In this concrete pump truck 51, the ready-mixed concrete supplied from the mixer truck to the hopper 55 passes through a supply passage 56 and is squeezed out of a pump 53.
Is pumped into a pumping tube 57 made of an elastic material, squeezed out of the pumping tube 57 by a roller 60, and fed through a concrete transfer pipe 58 to a predetermined construction site.

In the above-mentioned squeezing pump 53, the pumping tube 57 is worn or damaged by use. Therefore, the pumping tube 57 can be replaced by rotating the hopper support 54 horizontally. I have. Also, in the case of a concrete pump truck equipped with a piston type concrete pump, to repair or replace the base of the switching valve of the concrete pump,
The hopper supporting table on which the hopper is mounted is turned horizontally to disengage the hopper from the concrete pump.

[0006]

However, in the conventional concrete pump truck 51 described above, the hopper support 54
Is pivotally supported at one end thereof, and the hopper support 54 is horizontally rotated in a so-called cantilever state. After the maintenance work is completed, the hopper support 54 is horizontally rotated again, and the hopper is rotated. The support table 54 is
When the vehicle body 52 and the hopper support 5
4 (particularly in the vertical direction), which makes it difficult to secure the vehicle body 52 and the hopper support 54 in a predetermined positional relationship.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem. When the hopper support on which the hopper is mounted is horizontally turned to engage and secure the hopper support to the vehicle body, the vehicle and the hopper support are used. It is an object of the present invention to provide a highly reliable hopper turning lock device for a concrete pump truck, which can prevent the displacement of the hopper and securely fix the vehicle body and the hopper support base easily and reliably.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a hopper turning lock device for a concrete pump truck according to the present invention comprises: a vehicle body; a concrete pump mounted on the vehicle body; And a hopper support table mounted on the vehicle body so that the concrete pump and the hopper can be engaged and disengaged as necessary, so that the concrete pump and the hopper can be disengaged. Hopper swing lock device in a concrete pump truck
A pivoting means for pivotally supporting one end of the hopper supporter to the vehicle body side and supporting the hopper supporter so that the hopper supporter can turn horizontally, and the other end of the hopper supporter which is not pivotally supported by the bearing means. And a pair of engagement portions disposed on the vehicle body side,
Positioning means configured to engage the pair of engaging portions so that the vehicle body and the hopper support stand have a predetermined positional relationship; and the vehicle body disposed near the positioning means. Securing means for securing the hopper support.

In the hopper turning lock device of the present invention, the positioning between the vehicle body and the hopper support table is performed by the positioning means having a pair of engaging portions provided on the hopper support table side and the vehicle body side. At the same time, the vehicle body and the hopper support are fastened in the aligned state by the securing means disposed near the positioning means. In the hopper swivel lock device of the present invention, since the positioning means is provided on the other end side not supported by the bearing means, the positioning means is provided near the bearing means. Compared to the case, the accuracy of the alignment can be improved.
In addition, since the securing means is disposed near the positioning means, after performing the positioning, the securing work can be immediately performed in the vicinity thereof, so that the workability can be improved. .

The hopper turning lock device of the present invention is
The positioning means includes a pair of convex and concave engaging portions such that the vehicle body and the hopper support stand have a predetermined positional relationship when they are fitted to each other. It is assumed that one of the engaging portions having the shape and the concave shape is provided on one of the vehicle body side and the hopper support side, and the other is provided on the other side of the vehicle body side and the hopper support side. It is a feature. As described above, by using the positioning means having the convex engaging portion and the concave engaging portion as the positioning means, the positioning between the vehicle body and the hopper support can be reliably performed. become able to.
One of the convex engaging portion and the concave engaging portion is disposed on one of the vehicle body and the hopper support, and the other is disposed on the other of the vehicle and the hopper support. It is possible.

[0011] Further, the hopper turning lock device of the present invention comprises:
The securing means comprises a main securing means having a large securing strength such as a screw fastening type, and an auxiliary securing means which facilitates securing work such as a pin insertion type; and The securing means is disposed inside (closer to) the main securing means when viewed from the turning shaft (shaft support) side of the hopper support. As the securing means, a main securing means having a large securing strength such as a screw fastening type is combined with an auxiliary securing means such as a pin insertion type which facilitates securing work. When viewed from the turning shaft (shaft support portion) side, when the securing means disposed inside (front side) of the main securing means is used, first, the auxiliary securing means can easily assist the auxiliary securing means. After lashing, it is possible to perform firm lashing by the main lashing means, thereby improving workability and lashing reliability. Further, since the auxiliary securing means is disposed at a position closer to the front side than the main securing means when viewed from the turning shaft (shaft support portion) side of the hopper support base, for example, an auxiliary securing device is provided. In the case where a pin insertion type securing means is used, the amount of displacement of the pin hole is reduced, and it is possible to suppress the necessity of high machining accuracy at the time of production, thereby reducing the production cost. Thus, the workability of the auxiliary lashing can be improved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be shown and features thereof will be described in more detail. FIG. 1 is a plan view showing a schematic configuration of a concrete pump truck using a hopper turning lock device according to an embodiment of the present invention, FIG. 2 is a front view showing a configuration of a main part thereof, and FIGS. It is a figure which shows the structure of a positioning means, a securing means, etc. which comprise a hopper rotation lock device.

As shown in FIGS. 1 and 2, this concrete pump truck 1 includes a vehicle body 2, a squeezable concrete pump 3 mounted on the vehicle body 2, and a hopper support ( And a hopper 5 mounted on the hopper frame 4 for feeding the ready-mixed concrete to the concrete pump 3. The ready-mixed concrete put into the hopper 5 is supplied from the supply port 5 a via the supply path 6 to the concrete pump. 3 and is squeezed out by a roller 10 to be pumped from a concrete transfer pipe 8 to a predetermined construction site.

In this concrete pump truck, the hopper support 4 on which the hopper 5 is mounted has one end 4a (FIG. 1, FIG. 3 (a), etc.) 11 (shaft support means).
By being pivotally supported by, it is attached to the vehicle body 2 so as to be able to turn horizontally.

Further, the concrete pump truck 1 of this embodiment has a positioning means 14 for positioning the vehicle body 2 and the hopper support 4, and a vehicle body 2 disposed near the positioning means 14. And securing means 15 for securing the hopper support 4.

The positioning means 14 is disposed on the other end of the hopper support 4 which is not supported by the bearing means 11, as shown in FIGS. A wedge-shaped engaging portion 12 and an engaging portion 13 having a V-shaped groove 13a provided on the vehicle body 2 side are provided. The hopper support 4 and the vehicle body 2 are configured to engage with each other in a predetermined positional relationship. The leading edge 12a of the wedge-shaped engaging portion 12 (FIGS. 4, 7 and the like) and the V-shaped groove 13a (FIG. 3)
(b), FIG. 4, FIG. 7, etc.)
Are the leading edge portion 12a and the V-shaped groove 13a, respectively.
Are arranged so that the direction of the line is substantially horizontal.

The securing means 15 comprises a main securing means 16 having a large securing strength with a screw type, and an auxiliary securing means 17 which facilitates securing work by inserting a pin. The auxiliary securing means 17 is located near the main securing means 16 when viewed from a position supported by the shaft 11 of the hopper support 4.
It is arranged at a position on the near side of the main securing means 16.

The main securing means 16 is, as shown in FIGS. 5 and 8, etc., a bolt 1 having a nut 18 attached to its tip.
9 is formed of a vehicle body side bracket 20 rotatably mounted on a shaft 28 and a hopper support base side bracket 22 having a groove 21 into which the bolt 19 is fitted.
The auxiliary securing means 17 includes a projection 24 having a pin hole 23 provided on the hopper support base side bracket 22,
A pin hole 25 formed in the vehicle body-side bracket 20;
A pin 26 is provided. The pin holes 25 on the vehicle body side bracket 20 are formed on both of the two plate-like members 20a and 20b constituting the vehicle body side bracket 20. The pins 26 are attached to the hopper support 4 by wires 27 so as not to be lost.

Next, the operation of the concrete pump truck will be described. For example, when the pumping tube 7 is worn by use, the engagement between the hopper support 4 and the vehicle body 2 is released, and as shown in FIG. 6, the hopper support 4 is horizontally turned 90 ° to exchange the pumping tube. After performing the predetermined maintenance work, the vehicle body 2 and the hopper support 4 are engaged again. In that case, first, the hopper support 4
By turning about 90 degrees in the original direction, the hopper support 4 returns to the original position. At this time, if one side of the hopper support 4 is somewhat lowered by bending, as shown in FIG. Engaging part 1 on vehicle body 2 side that constitutes positioning means 14
The wedge-shaped engaging portion 12 of the hopper support 4 is engaged with the V-shaped groove 13a of No.3. Then, when the hopper support 4 is further turned horizontally toward the vehicle body 2, finally, as shown in FIG.
As shown in (1), the positioning is reliably performed so that the vehicle body 2 and the hopper support 4 have a predetermined positional relationship.

In the hopper swivel lock device of this embodiment, the positioning means 14 is a shaft (shaft support means) 11.
Since it is provided on the opposite side (the other end side) from the one supported by the shaft, higher positioning accuracy can be obtained as compared with the case where the positioning means is provided near the shaft (supporting means) 11. Lashing means 1 near the alignment means 14
Since the position 5 is provided, it is possible to immediately perform the securing operation in the vicinity of the position after performing the alignment, thereby improving the workability. Further, in the hopper turning lock device of this embodiment, the wedge-shaped engaging portion 12 and the engaging portion 13 having the V-shaped groove are combined, and the leading edge portion 12a and the V-shaped groove 13a are combined. Since the positioning means disposed so that the direction is substantially horizontal is used, the positioning between the vehicle body 2 and the hopper support 4, especially the vertical positioning, can be performed easily and reliably. .

In the latter half of the above positioning step, as shown in FIGS. 8 (a) and 8 (b), the projection 24 of the hopper support base side bracket 22 constituting the securing means 15 is connected to the vehicle body side bracket. 20, two plate-like members 20a,
As shown in FIG. 8B, the pin 26 is inserted through the pin hole 25 of the plate member 20a on the upper side of the vehicle body side bracket 20 into the gap 20c of the hopper support base side bracket 2 as shown in FIG.
The hopper support 4 and the vehicle body are inserted into the pin holes (not shown) of the plate-like member 20b on the lower side of the vehicle body side bracket 20 through the pin holes 23 (FIG. 8A) of the projections 24 of FIG. 2
Is temporarily fixed (assisted securing). Then, FIGS. 5 and 8
As shown in (b), the bolt 19 is turned to fit into the groove 21 of the hopper support side bracket 22, and then the nut 18 is tightened to fix the hopper support 4 to the vehicle body 2 (main securing). . Thereby, the vehicle body 2 and the hopper support 4
Engagement and fastening are reliably performed in a predetermined positional relationship.

In the hopper swivel lock device of the present invention, the securing means 15 includes a screw-type main securing means 16 having a large securing strength, and a pin inserting type securing means which facilitates securing work. Means 17 and the pin 2
6 is inserted into the pin holes 25, 23 and the like to perform auxiliary securing. Then, the bolt 19 is turned to fit into the groove 21 of the hopper support base side bracket 22, and the nut 18 is tightened. In addition, it is possible to securely tie the vehicle body 2 and the hopper support 4 to each other, thereby improving workability.

In the above embodiment, a description has been given of the case where the positioning means is a combination of a wedge-shaped engaging part and an engaging part having a V-shaped groove. The mating means is not limited to the one having the above-described configuration, and may be a convex-shaped engaging portion and a concave-shaped engaging portion such that when fitted together, the vehicle body and the hopper support stand engage in a predetermined positional relationship. It is also possible to adopt a configuration including a joining portion, and in that case, there is no particular restriction on the specific shape of the convex and concave engaging portions.

In the above embodiment, the case where the positioning means and the securing means are separately provided has been described. However, in the hopper turning lock device of the present invention, for example, as shown in FIG. It is also possible to adopt a configuration in which the binding means and the positioning means are integrated. That is, the positioning / assisting securing mechanism includes, for example, on the vehicle body 2 side, an engaging portion 33 having a V-shaped groove 33a and a pin hole 45 is disposed, and the hopper supporting table 4 side. Engaging portion 32 having a wedge shape and having a pin hole 43
Is arranged. In this positioning and auxiliary securing mechanism, the hopper support 4 is rotated horizontally to perform positioning, and then the pin 26 is inserted into the pin hole 4.
By inserting them into 3, 45, it becomes possible to perform alignment and auxiliary securing simultaneously and in parallel, and it is possible to further improve workability.

The present invention is not limited to the above-described embodiment in other respects, but includes the type of concrete pump, the specific shape and structure of the hopper, the configuration of the hopper turning mechanism, and the positioning of the securing means. Regarding the specific configuration of the means and the positional relationship between them, the specific configuration and the positional relationship of the main securing means and the auxiliary securing means constituting the securing means, etc., various applications and modifications within the scope of the invention It is possible to add

[0026]

As described above, the hopper swing lock device for a concrete pump truck according to the present invention supports one end of the hopper support base by the shaft support means to support the hopper support base so as to be able to rotate substantially horizontally. A pair of engaging portions are arranged on the other end side of the hopper supporting base that is not supported by the shaft supporting means and the vehicle body side to form a positioning means, and the vehicle body is located near the positioning means. And the securing means for securing the hopper support base is arranged, so that the positioning means aligns the vehicle body with the hopper support base and, in the aligned state, the positioning means The vehicle body and the hopper support are fastened by the fastening means arranged in the vicinity. Also,
Since the positioning means is provided on the other end side which is not supported by the bearing means, the accuracy of positioning can be improved as compared with the case where the positioning means is provided near the bearing means. it can. Furthermore, since the securing means is provided near the positioning means, the securing work can be performed immediately in the vicinity after the positioning, so that the workability can be improved.

Further, by using a positioning means having a convex engaging portion and a concave engaging portion as the positioning means, the positioning between the vehicle body and the hopper support is ensured. Can be.

As the securing means, a main securing means having a large securing strength such as a screw fastening type is combined with an auxiliary securing means such as a pin insertion type which facilitates securing work.
In the case of using the securing means in which the auxiliary securing means is disposed in the vicinity of the main securing means, first the auxiliary securing means is easily secured by the auxiliary securing means, and then the strong securing means is used. Fastening can be performed, and workability can be improved and fastening reliability can be improved. In particular, when the hopper support is returned to its original position by horizontal turning at the place where it is lowered backward, the auxiliary securing means prevents the hopper support from separating, and the main securing means can be operated in that state. Workability is significantly improved.

Further, in a mode in which the auxiliary securing means is disposed at a position closer to the front side than the main securing means when viewed from the turning shaft (shaft support portion) side of the hopper support, for example,
When a pin insertion type lashing device is used as the auxiliary lashing device, the amount of displacement of the pin hole is reduced, and it is possible to suppress the necessity of high machining accuracy at the time of manufacturing, thereby reducing the manufacturing cost. As a result, the workability of the auxiliary lashing can be improved, and the present invention can be further implemented.

[Brief description of the drawings]

FIG. 1 is a plan view showing a concrete pump truck using a hopper turning lock device according to an embodiment of the present invention.

FIG. 2 is a view showing a main part of the concrete pump truck of FIG. 1;

3A and 3B are diagrams illustrating a main part of a hopper turning lock device according to an embodiment of the present invention, wherein FIG. 3A is a plan view and FIG. 3B is a side view.

FIG. 4 is a view showing a configuration of a positioning means constituting the hopper turning lock device according to one embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a securing means constituting the hopper turning lock device according to one embodiment of the present invention.

FIG. 6 is a plan view showing an operation of a concrete pump truck using the hopper turning lock device according to one embodiment of the present invention.

FIG. 7 is a view showing the operation of the positioning means of the hopper turning lock device according to one embodiment of the present invention.

FIGS. 8A and 8B are diagrams showing the operation of the securing means constituting the hopper turning lock device according to one embodiment of the present invention.

FIG. 9 is a perspective view showing another example of the positioning means according to the embodiment of the present invention.

FIG. 10 is a front view showing a configuration of a conventional concrete pump truck.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete pump truck 2 Car body 3 Concrete pump 4 Hopper support stand (hopper frame) 5 Hopper 5a Supply port 6 Supply path 7 Pumping tube 8 Concrete transfer pipe 10 Roller 11 Shaft (shaft support means) 12, 32 Wedge-shaped engaging part 12a edge portion 13, 33 engaging portion having V-shaped groove 13a, 33a V-shaped groove 14 positioning means 15 securing means 16 main securing means 17 auxiliary securing means 18 nut 19 bolt 20 vehicle body side bracket 20a, 20b Plate-like member 21 Groove 22 Hopper support side bracket 23, 43 Pin hole 24 Projection 25, 45 Pin hole 26 Pin 27 Wire 28 Shaft

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B28C 9/04 B60P 3/16 E04G 21/04

Claims (3)

(57) [Claims] A concrete pump mounted on the body, a hopper for feeding ready-mixed concrete to the concrete pump, and the hopper mounted thereon, and the concrete pump and the hopper are connected as required. If
A hopper turning lock device for a concrete pump truck comprising a hopper supporting base attached to a vehicle body so as to be able to turn horizontally so that the hopper can be disengaged. A shaft supporting means for supporting the support base so as to be able to turn horizontally; a second end of the hopper support base which is not supported by the shaft supporting means; and a pair of engaging portions provided on the vehicle body side. Positioning means configured to engage the pair of engaging portions so that the vehicle body and the hopper support stand have a predetermined positional relationship, and disposed near the positioning means. And a securing means for securing the vehicle body and the hopper support base to each other. 2. The positioning means comprises a pair of convex and concave engaging portions such that the vehicle body and the hopper support stand have a predetermined positional relationship when fitted together. Further, one of the convex and concave engaging portions is disposed on one of the vehicle body side and the hopper support base side, and the other is disposed on the other side of the vehicle body side and the hopper support base side. The hopper turning lock device for a concrete pump truck according to claim 1, wherein: 3. The securing means comprises a main securing means having a large securing strength, such as a screw type, and an auxiliary securing means, such as a pin insertion type, which facilitates securing work. ,And,
2. The auxiliary securing means is disposed on the inner side (front side) of the main securing means when viewed from a pivot (a shaft support portion) side of the hopper support base. Hopper rotation lock device for concrete pump trucks.