JPS6121304Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crane-equipped truck in which a crane is mounted on a loading platform, which is formed by collapsably connecting a swinging support and a boom member, and more specifically, to a crane-equipped truck in which a crane is mounted on a loading platform. This is related to the storage structure of .

Some conventional crane-equipped trucks include a simple crane 3 mounted on the front part of a loading platform 12 of a vehicle 1, as shown in FIG. This crane 3 has a boom whose lower end 4a of a swinging support column 4 is fixed to a support support member 8 in an almost upright state, and which is folded to the upper end 4b of this support column 4 so as to be able to rise and fall freely. It is formed by attaching the member 5. In addition, the reference numeral 7 designates a pivot shaft portion that supports the support column 4 in a rotatable manner, and the reference numeral 9 designates a load receiving plate.

However, in the case of the crane-equipped truck In order to prevent the height H of the vehicle 1 from exceeding the height H regulated by Become. For this reason, the pillar 4
And the maximum length of the boom member 5 is equal to or less than the length from the upper end surface of the loading platform 12 to the highest part 9a of the vehicle 1,
The effective length of the support column 4 and the boom member 5 cannot be taken sufficiently, and when working with the crane 3, the working radius and ground lifting height of the crane 3 are shortened, and the swing range of the boom member 5 is limited to the driver's seat. There was a problem in that the working range of the crane 3 was limited to the rear side of the crane.

In view of the above-mentioned problems with conventional crane-equipped trucks, the present invention allows the crane mounted on the loading platform to be stored in an inclined position, thereby ensuring that the width and height of the vehicle do not exceed the legally regulated vehicle width and height. Even when the crane is stored within a range, the effective length of the crane is longer than before, making it possible to increase the crane's working radius and working lift, as well as expand the crane's swing angle range. This was developed for the purpose of providing a truck with a crane.

Hereinafter, the present invention will be explained based on the embodiment shown in FIGS. 2 to 6. FIGS. 2 to 5 show a truck Y with a crane according to the embodiment of the present invention. In addition, in each drawing, the code 1 is a vehicle, and the code 2 is a vehicle.
is the driver's seat, 9 is the load receiving plate for protecting the driver's seat 2, 10
12 indicates a crane, and 12 indicates a loading platform.

The crane 10 is a so-called simple type crane, and includes a support 14 attached to a support support member 18 fixed to a pivot shaft 7 mounted on a loading platform 12 so as to be able to rise and fall freely with a pin 11, and a support The boom member 15 is foldably attached to the tip 14b by a pin 13.

The column 14 has a pin receiving hole 22 formed at its lower end 14a that matches the pin receiving holes 25, 25 bored in the column supporting member 18, and also extends between the column supporting member 15 and the boom member 15. It is equipped with a hydraulic undulation cylinder 16 that functions to undulate the boom member 15 at an appropriate angle. Incidentally, reference numeral 19 denotes a drive section which incorporates an oil pump and the like for driving the undulation cylinder 16.

The boom member 15 includes a tip boom 31 that can be manually extended and contracted within the main boom 21 on the outside.

The tip boom 31 is formed with several pin receiving holes 29, 29... (FIG. 5) that selectively match the pin receiving holes 26 (FIG. 6) formed at the tip of the main boom 21, The main boom 21 and the tip boom 31 are fixed at a predetermined length by inserting a common pin 28 between the pin receiving holes 26 and 29 that match each other. Note that the reference numeral 23 denotes a load hook 36, 37, and 38 attached to the tip of the wire rope 40 that is wound up or unwound by a hoisting machine (not shown). It shows.

When the boom member 15 is stored, it is fixed in an inclined state as shown in FIG. It is arranged as follows. This boom support member 20 also has a pin receiving hole 27 formed therein.

Next, the usage and operation of the crane-equipped truck of the illustrated embodiment will be explained. When the crane-equipped truck Y is stored, the third
As shown in the figure (solid line) and FIGS. 4 and 6 (imaginary line), when the strut 14 and the boom member 15 are mutually folded, their tips end at the highest part of the vehicle 1 (in the illustrated embodiment, the loading platform 12 The load receiving plate is lowered to a position below the upper end 9a), and the pin receiving holes 27, 27 of the boom support member 20 are aligned with the pin receiving holes 26, 26 of the boom member 15, and further, these pin receiving holes are Pin 2 on 27, 27, 26, 26
8 is inserted and the support column 14 and boom member 15 are fixed and stored. In this case, when the crane 10 is stored, the tip of the crane 10 should not protrude beyond the outermost line of the vehicle 1 (i.e., the entire crane 10 should be within the legally specified allowable vehicle height H). and the length of the boom member 15, etc. of the crane 10 are set in advance so that they fall within the range of the allowable vehicle width W). When using the crane 10, first remove the pin 28 from the boom support member 20 as shown in FIGS. 4 to 6.
and release the fixation of the crane 10,
The operator manually raises the crane 10 in the direction of arrow B, and then inserts the pin receiving hole 25 of the column support member 18,
When the support 14 is raised until the support 25 and the pin support holes 22 of the support lower end 14a match, these pin support holes 2
5, 25, and 22 to fix the column 14 to the column support member 18. Furthermore, as shown in FIG. 5, the boom member 15 is raised to an appropriate angle in the direction of arrow D by the undulating cylinder 16, and the tip boom 31 housed in the boom member 15 is pulled out to an appropriate length in the direction of arrow H, and 14
Perform crane work by turning the crane in the direction of arrow E-F. In addition, when turning this crane,
The mounting height of the boom member 15 relative to the support column 14 is determined so that the boom member 15 can swing above the driver's seat 2 even when the boom member 15 is horizontal. When the crane work is completed, the support column 14 is rotated in a predetermined direction, the tip boom 31 is retracted in the direction of arrow G, the boom member 15 is folded in the direction of arrow C, and the pin 24 is removed from the support support member 18. is pulled out, and by the above-described operation, the column 14 is lowered in the direction of the arrow A, and the column 14 and the boom member 15 are housed and fixed in the boom support member 20 in an inclined state. (Figure 4, Figure 6,
code 10').

In the illustrated truck with crane, when the support column 14 is fixed almost upright on the loading platform ₁₂ , as shown in FIG. From the highest point 9a of the vehicle 1 it can be increased by a further length _H2 , and the length of the boom member 15 can likewise be increased by approximately a length _H2 .
That is, compared to the conventional example shown in FIG. 1, in the crane-equipped truck of the illustrated embodiment, the lift height, working radius, and swing angle range of the crane 10 are increased, and work efficiency is improved.

Next, to explain the effect of the present invention, since the crane-equipped truck of the present invention is stored on the truck loading platform by tilting the strut and boom member, the length of the strut and boom member of the crane is as follows. When retracted, the strut and boom member can be made as long as possible within the range that does not exceed the permissible width and height of the vehicle stipulated by law. Also, the effective length of the strut and boom member can be made sufficiently long. Therefore, the present invention has the practical effect of widening the working range of the crane in terms of both lifting height and working radius, and improving the working surface.

Furthermore, according to the present invention, when the prop is in an upright position, the boom member can swing above the vehicle driver's seat in a horizontal state, which makes it possible to operate a truck that was not possible with conventional trucks with simple cranes. Crane work can be done in front of the driver's seat, and since the crane work can be done with the boom member at a low angle (horizontal position), the maximum crane work radius is the same as the length of the boom member in front of the driver's seat. There is an effect that can be obtained.

[Brief explanation of the drawing]

Figure 1 is a rear view of a conventional truck with a crane.
Figure 2 is a side view of the crane-equipped truck according to the embodiment of the present invention, Figure 3 is a rear view of the crane-equipped truck of Figure 2, and Figures 4 to 6 are how to use the crane-equipped truck of Figure 2. It is an explanatory diagram. 1... Vehicle, 10... Crane, 12... Loading platform, 14... Strut, 15... Boom member, 18...
...Strut support member, 20...Boom support member.

Claims (1)

[Scope of utility model registration request] A crane 10 is installed on the loading platform of the vehicle 1, in which a boom member 15 is vertically foldably attached to a support 14 which is attached to one side end of the loading platform 12 immediately behind the driver's seat 2 of the vehicle 1 so as to be able to rotate horizontally. 12, the crane 10 is in a state where the boom member 15 is folded when stored, and the support 14 is mounted on the loading platform 12.
Further, in the fixed state, the upper ends of the support column 14 and the boom member 15 do not exceed the allowable vehicle width W and allowable vehicle height H of the vehicle 1, and the crane 10
When the column 14 is fixed upright, the column 14
The length of the strut 14 and the mounting height of the boom member 15 are such that the height exceeds the vehicle driver's seat 2, and the boom member 15 attached to the strut 14 can swing above the vehicle driver's seat 2 in a horizontal state. A crane-equipped truck characterized by the following: