JPS6332190Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to an improvement of a power transport vehicle for transporting earth and sand to construction sites, etc.

(b) Prior Art Conventionally, this type of power transport vehicle has been provided with a box-shaped loading platform b on the top of a crawler-type traveling device a, as shown in FIG. It was equipped with a support arm e having a bucket d for loading at its tip.

(c) Problems to be solved by the invention Therefore, in order to prevent the forward-sloping loading platform b from coming into contact with the loading bucket d, the entire support arm e must be made long, and the loading platform Since the width of the left and right crawlers f is wider than the width of the crawler f, it is necessary to reinforce the crawler f, which has disadvantages such as difficulty in manufacturing and high cost.

(d) Means to solve the problem In this invention, a box-shaped loading platform is installed on the top of the traveling device.
The base of the actuating arm is rotatably supported on both sides of the front half side wall on the tilting side of the loading platform via a fulcrum pin, and the rotational raising and lowering operation of the operating arm is controlled by the tilting of the loading platform. By configuring the operation arm to be performed in the side direction, the opening/closing bucket at the tip of the arm can be raised and lowered in the direction of the tilting side of the loading platform regardless of the forward tilting operation of the loading platform. is constructed so that it can be raised and lowered by a hydraulic device pivotally supported on the side wall of the loading platform, and a hydraulic cylinder is attached to the upper edge of the operating arm, and the hydraulic cylinder is interlocked with the opening/closing bucket of the loading bucket via a link mechanism. The link mechanism is such that when the opening/closing bucket is closed, the hydraulic cylinder and the rod interposed between the cylinder and the bucket are located approximately in a straight line, and the operating end of the cylinder and the connecting portion of the rod are in contact with each other. The present invention provides a power transport vehicle in which a link interposed between the arm and the arm is positioned substantially perpendicular to the above-mentioned straight line.

(E) Functions and Effects According to the present invention, the following functions and effects can be achieved.

In the conventional type, the mounting arm for mounting the loading bucket was directly mounted on the traveling frame, so the overall length of the mounting arm had to be made long, and the mounting arm and the mounting device had to be made strong. However, in this invention, the operating arm base is pivoted on both sides of the front half of the loading platform, so the overall length of the operating arm can be configured as short as possible, and the strength is increased. In addition, it is possible to achieve a simple structure without requiring a separate reinforcing member.

In addition, with the conventional model, the distance between the left and right mounting arms had to be wide, making it impossible to securely and firmly support the loading bucket. Since the spacing is narrow, the bucket can be supported reliably.

The hydraulic cylinder for operating the bucket is attached to the upper edge of the operating arm and is interlocked with the loading bucket via a link mechanism, so the actuation arm and bucket can be operated separately and independently. Even though the bucket cart is located in the front half of the cargo box when the operating arm is rotated upward, earth and sand can be loaded into the entire cargo box by rotating the bucket cart independently.

The overall structure is small and compact, and loading and unloading operations can be carried out easily and efficiently.

In addition, the tilting and restoring operation of the box-shaped cargo platform and the lifting and lowering of the loading bucket can both be performed simultaneously without contacting each other. For example, while restoring the box-shaped cargo platform after dumping, the Lower the loading bucket to the forward position,
Earth and sand leveling work can be started immediately.
The waiting time for operation is shortened and efficiency can be improved.

This has the effect of streamlining the transmission of force from the hydraulic cylinder when closing the bucket, reducing the burden on the cylinder and link mechanism and preventing wear and tear thereon.

(F) Embodiment The mode of implementation of the present invention will be described in detail below with reference to the illustrative drawings. Reference numeral 1 denotes a machine frame body of a power carrier, and crawler type traveling devices 2 are equipped on both sides of the lower part.
Reference numeral 3 denotes a box-shaped loading platform placed on the upper part of the machine frame body 1, and is configured to be tiltable forward by a hydraulic cylinder 5 installed at the bottom 4.

Reference numeral 6 denotes a rotation fulcrum pin of the box-shaped loading platform 3; 7 is a mounting bracket fixed to both sides of the box-shaped loading platform 3 with bolts 8; the front and rear ends of the bracket 9, 10;
Support pins 11 and 12 are respectively provided to protrude laterally.

Reference numeral 13 denotes an operating arm on which a loading bucket 15 is attached to the tip 14, and a base 16 of the arm.
is pivotally connected to a fulcrum pin 11 at the front end.

Furthermore, the fulcrum pin 11 is arranged in the front half of the box-shaped loading platform 3 as shown in FIG. I'm being forced to do it.

17 is an opening/closing bucket for loading bucket 15;
18 is a fulcrum pin; 19 is a hydraulic cylinder for opening and closing the bucket as a hydraulic cylinder for operating the bucket, which is attached to the operating arm 13 and the link 20; and 21 is a rod connecting the link 20 and the opening/closing bucket 17; The rod 21 constitutes a link mechanism M, through which the bucket belt 15 and a hydraulic cylinder 19 for operating the bucket belt are interlocked and connected.

Moreover, the link mechanism M is connected to the loading bucket 1.
When the opening/closing bucket 17 of No. 5 is closed, the hydraulic cylinder 19, the same cylinder 19 and the same bucket 1
The rod 21 interposed between the cylinder 19 and the rod 21 is located substantially in a straight line, and the link 20 interposed between the connecting portion of the cylinder 19 and the rod 21 and the actuating arm 13 is located substantially perpendicular to the above straight line. It is configured to be located in the state.

Due to the configuration of the hydraulic cylinder 19, rod 21, and link 20, when the bucket is closed, where a great force is applied to the link mechanism M, the hydraulic cylinder 19 and the rod 21 are located substantially in a straight line, and the pressing force of the cylinder 19 is reduced. It is transmitted to the opening/closing bucket 17 without loss, and since the link 20 is substantially orthogonal to the above-mentioned straight line, there is only a slight change in the relative position between the hydraulic cylinder 19 and the rod 21, and the force applied to the link 20 is also small. The burden on the hydraulic cylinder 19 and the link mechanism M is reduced.

Reference numeral 22 denotes a hydraulic cylinder for lifting and lowering that rotates the operating arm 13 up and down, and has a base 23 pivotally attached to the fulcrum pin 12 and a tip 24 connected to the operating arm 13.

Further, the front half of the actuating arm 13 is configured to protrude forward from the front end of the box-shaped loading platform 3 when the loading bucket 14 touches the ground, and as shown in FIG. 2, the actuating arm 13 is raised. The loading bucket 14 is configured to be located above the front half of the box-shaped loading platform 3 at the upper limit rotation position.

25 is an engine mounted at the rear of the machine frame body 1;
26 is a driver's seat.

The present invention has the above-mentioned configuration, and therefore,
When loading soil or the like onto the loading platform, extend the hydraulic cylinder 22 that raises and lowers the operating arm 13, and then move the operating arm 13 toward the front of the machine, that is, to the front of the box-shaped cargo platform 3, as shown in FIG. is placed in a grounded state, and at the same time, the front half of the operating arm 13 is made to project forward from the front end of the loading platform, and in this state, the machine is moved forward to scoop earth and sand into the bucket 15.

Then, while contracting the hydraulic cylinder 22, the actuating arm 13 is rotated toward the loading platform, that is, toward the rear, and the bucket cart 15 is rotated upward to above the front half of the loading platform.

Next, the bucket opening/closing hydraulic cylinder 19 is operated to rotate and tilt the opening/closing bucket 17 via the link mechanism M, and the earth and sand fall onto the loading platform.

In addition, when unloading earth and sand loaded onto a loading platform, as shown in FIG. 3, the hydraulic cylinder 5 provided under the loading platform is extended to tilt the loading platform forward and allow it to slide off.

In addition, as shown in FIG.
7 is installed, irregularities on the ground surface can be easily smoothed out by appropriately operating the operating arm 13 in the vertical direction using the hydraulic cylinder 22.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is an overall side view of the power carrier of the present invention, Figure 2
The figure is a diagram of the operation of the main parts, Figure 3 is a diagram of the operation of the main parts, Figure 4 is a sectional view of the same, Figure 5 is a side view of the main parts,
FIG. 6 is a side view of a conventional power carrier. 2: Traveling device, 3: Box-shaped loading platform, 11: Fulcrum pin, 13: Operating arm, 15: Loading bucket, 16: Base, 19: Hydraulic cylinder, 22:
Hydraulic equipment.

Claims (1)

[Scope of utility model registration request] A box-shaped loading platform 3 is provided on the top of the traveling device 2 so as to be tiltable forward, and the base 16 of the actuating arm 13 is rotatably pivoted via a fulcrum pin 11 on both sides of the side wall of the front half of the loading platform 3 on the tilting side. Supporting and operating arm 13
By configuring the rotational lifting and lowering operation of the arm 13 to be performed in the direction of the tilting side of the loading platform 3,
The opening/closing bucket cart 17 at the tip is configured so that it can be raised and lowered in the direction of the tilting side of the loading platform 3, regardless of the forward tilting operation of the loading platform 3, and furthermore, the operating arm 13 is connected to a hydraulic motor whose base end is pivoted to the side wall of the loading platform. A hydraulic cylinder 19 is attached to the upper edge of the operating arm 13 and the hydraulic cylinder 19 is interlocked with the opening/closing pail 17 of the loading pail 15 via a link mechanism M. M is such that when the opening/closing bucket 17 is closed, the hydraulic cylinder 19 and the rod 21 interposed between the cylinder 19 and the bucket 17 are located approximately in a straight line, and the operating end of the cylinder 19 and the rod are located in a straight line. 21 and the actuating arm 13, the link 20 is positioned substantially perpendicular to the above straight line.