KR200149745Y1 - Loader - Google Patents

Abstract

The present invention relates to a loader, more specifically, it can be used in a narrow space, the center of rotation of the boom is located in the middle position of the front and rear body of the loader so that the rear wheel of the loader is not lifted when lifting the load. It relates to a loader in which the rear body of the vehicle rotates to prevent the loader from being lifted sideways and overturned when driving on a floor. The loader according to a suitable embodiment of the present invention is characterized.

Description

Loader

The present invention relates to a loader, more specifically, it can be used in a narrow space, the center of rotation of the boom is located in the middle position of the front and rear body of the loader so that the rear wheel of the loader is not lifted when lifting the load. It relates to a loader in which the rear body of the vehicle rotates to prevent the loader from being lifted to the side and overturning when driving on a floor.

The loader used for the construction industry is a bucket provided in front of the heavy lifting equipment that lifts and moves loads such as soil, sand, and gravel, and then unloads or unloads the truck into a loading box. In general, the loader is connected to the front and rear propulsion shaft through the engine, a torque converter that receives the output from the engine to rotate, a reducer for decelerating the rotational force generated by the torque converter to transfer the rotational force to the front and rear propulsion shaft, and a universal joint, respectively. It is composed of differentials for rotating the axle. On the other hand, the bucket for lifting and unloading the load is to be rotated up and down by the boom, the boom is to be rotated by the operation of the boom cylinder driven by the hydraulic pump.

Since such conventional loaders are manufactured for construction and civil engineering, they are not suitable for performing operations such as manure treatment of livestock in places where spaces such as barns are narrow. Meanwhile, as shown in FIG. 2, the rotation center 0bC0c of the boom 16 in the loader 10 is adjacent to the front wheel 12 of the loader 10. Accordingly, when the boom 16 is rotated to lift and unload the load into the bucket 15, the center of gravity of the bucket 15 is moved to the rear drawing point of the front wheel 12, so that the load Since the load is taken around the front wheel 12, the phenomenon that the rear wheel 14 side is lifted often occurs. Therefore, the weight of the load that can be lifted and unloaded into the bucket 15 is limited, and in order to solve the problem that the rear wheel 14 side is lifted as described above, the rear body of the loader 10 is made more heavy and In addition, the additional weight is mounted to the rear of the loader, so that the weight of the loader is increased, thereby increasing the manufacturing cost of the loader and increasing fuel consumption.

In addition, when the wheels of the loader 10 pass through any uneven obstacles located on the road surface during work or movement, the whole body may be lifted sideways and tilted, and may be overturned. The burden will be poured out, so the need to prevent it is required. In addition, the conventional loader has a relatively large rotation radius, which makes it unsuitable for use in a relatively narrow place. Therefore, there is a need to develop a loader suitable for the loader.

Therefore, the present invention is designed to solve the problems as described above, and the object of the present invention is that the center of rotation of the boom is in the middle position of the front and rear body of the loader when lifting and unloading the load, This is to provide the loader which is located in the intermediate position.

Another object of the present invention is to provide a loader in which the loader rotates about the pivot pin so that the front body and the rear vehicle are connected to the pivot pin so that the loader can be rotated in a narrow space.

Another object of the present invention is to provide a loader equipped with a rotating device for rotating the rear body so as to prevent the loader from being lifted to the side when the loader passes through uneven obstacles on the road during work or movement.

Still another object of the present invention is to provide a loader having a large torque by directly transmitting the output of a hydraulic motor operated by a hydraulic pump without using a speed reducer to a driven gear connected to the front and rear axles.

1 is a side view schematically showing a center of rotation of a loader boom according to the prior art;

2 is a schematic perspective view of a loader according to a preferred embodiment of the present invention.

3 is a side view schematically showing the center of rotation of the loader boom according to a preferred embodiment of the present invention;

4 is a plan view schematically showing the radius of rotation of the loader according to a preferred embodiment of the present invention;

5 is a plan view schematically showing a rotating device for rotating the rear body when the loader passes through the unevenness on the road surface according to a preferred embodiment of the present invention.

FIG. 6 is a perspective view showing the rotation device of FIG. 5 in more detail. FIG.

7 is a perspective view schematically showing a drive device of a loader according to a preferred embodiment of the present invention.

8 is a rear view illustrating a state in which the rear wheels of the loader pass through an obstacle according to a preferred embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

10: loader

12: front wheel

14: rear wheel

15: bucket

16: boom

20: front body

21: Rotating pin

22: rear body

24: pin connection

26: pivot axis

28: hall

29: locking member

38: hydraulic motor

40: drive gear

42: forward propulsion shaft

44: rear propulsion shaft

46: driven gear

A loader according to a suitable embodiment of the present invention for achieving the above object is a loader for lifting and unloading a load into a bucket which is located in front of itself, the center of rotation of the boom for lifting the bucket is the front of the loader It is characterized in that it is located in the middle position of the vehicle body and the rear vehicle body.

Another feature of the loader according to a preferred embodiment of the present invention is that the front body and the rear body are connected by pivot pins such that the radius of rotation of the loader is the distance from the middle of the body to the front wheels.

Another feature of the loader according to a suitable embodiment of the present invention is that the front and rear propulsion shafts for driving the front and rear wheels are directly rotated by a driven gear coupled with a drive gear from the hydraulic motor.

Another feature of the loader according to a preferred embodiment of the present invention is that the rotation device is provided such that its rear body rotates when its rear wheel passes the unevenness.

A further feature of the loader according to a preferred embodiment of the present invention is that the pivoting device has a pivot shaft pivoted in a hole formed in the rear vehicle body and is connected to the pivot pin, and the pivot shaft is connected to the pivot shaft. It includes a locking member for holding.

The above-mentioned features and other features can be better understood from the following detailed description with reference to FIGS. 2 to 7.

Figure 2 schematically shows a loader according to a suitable embodiment of the present invention. The center of rotation 0bC0c of the boom 16 of the loader 10 is located at an intermediate position between the front body 20 and the rear body 22, as shown in FIG. The front vehicle body 20 and the rear vehicle body 22 are connected to the pivot pin 21 so as to rotate with a relatively small turning radius 0bR0c as shown in FIG. 5 and 6 schematically show a turning device for rotating the rear vehicle body 22 when the loader 10 according to the preferred embodiment of the present invention passes through the unevenness on the road surface. The pivoting device has a pivot shaft 26 pivoted in a hole 28 formed in the rear vehicle body 22 and a pin connecting portion 24 connected to the pivot pin 21, and the pivot shaft ( And a locking member 29 for retaining 26 in the hole 28.

Next, referring to FIG. 7, there is schematically shown a driving device of the loader 10 according to a preferred embodiment of the present invention. The hydraulic pump 36 operated by the engine 34 is connected to rotate the hydraulic motor 38, and the driving gear 40 is fixed to the drive shaft 39 of the hydraulic motor 38. The drive gear 40 is connected to the front propulsion shaft 42 and the rear propulsion shaft 44 for driving the front wheel 12 and the rear wheel 14 via respective universal joints 48 and differentials (not shown). Meshes with a driven gear 46,

In addition, the loader 10 according to a preferred embodiment of the present invention is to be equipped with equipment for the other purposes, such as before and after the body to be used as equipment for other uses, such as excavators, plow rotary, and the like.

The operation of the loader 10 according to a suitable embodiment of the present invention will now be described. As shown in Fig. 3, since the rotation center 0bC0c of the boom 16 is located at the intermediate position between the front body 20 and the rear body 22, the boom 16 is operated by the operation of the boom cylinder 18. As it is lifted and rotated upward, the center of gravity of the bucket 15 is moved from the front vehicle body 20 to the rear vehicle body 22. As a result, the center of gravity of the load is prevented from acting about the front wheel 12, thereby eliminating the problem that the rear wheel 14 is lifted.

As described with reference to FIG. 4, when the loader 10 rotates to change direction, the front vehicle body is operated by the steering cylinder 23 installed to connect the front vehicle body 20 and the rear vehicle body 22. 20 rotates while rotating around the rotation pin 21 about the rotation radius 0bR0c, it is possible to rotate the loader in a narrow space.

On the other hand, as shown in Fig. 7, the drive gear 40 from the hydraulic motor 38 is driven by a driven gear 46 for rotating the front propulsion shaft 42 and the rear propulsion shaft 44 without going through a separate speed reducer Because they are directly coupled, they deliver a relatively large torque.

When the rear wheel 14 of the loader 10 passes over the uneven obstacle 60 on the road surface, the rear body 22 rotates to the left or right around the pivot shaft 26, so that the front wheel 12 is horizontal. By maintaining the state, the risk that the loader 10 is lifted to the side and overturned is eliminated, thereby preventing the load in the bucket 15 from spilling (see FIGS. 5, 6, and 8). .

As described above, the loader according to a preferred embodiment of the present invention is prevented from lifting the rear wheel of the loader when lifting and unloading the load has the effect of lifting the load more than the weight of the vehicle. In addition, since the radius of rotation is small, it is possible to work in a relatively narrow space as in a relatively barn, and when passing through the uneven obstacles on the road surface, the rear body is rotated to prevent the loader from overturning or spilling the load in the bucket. In addition, since a separate reducer is not used, a relatively large driving torque may be obtained.

Claims (5)

In the loader (10) for lifting and unloading a load into a bucket (15) located in front of itself, A loader, characterized in that the center of rotation of the boom (16) for lifting the bucket (15) is located at an intermediate position between the front body (20) and the rear body (22) of the loader (10). 2. The loader according to claim 1, wherein the front vehicle body 20 and the rear vehicle body 22 are connected to the pivot pin 21 so that the rotation radius of the loader 10 is a distance from the middle portion of the vehicle body to the front wheel 12. . The driven gear 46 according to claim 1, wherein the front propulsion shaft 42 and the rear propulsion shaft 44 for driving the front wheel 12 and the rear wheel 14 are engaged with the drive gear 40 from the hydraulic motor 38. Loader rotated directly by). The loader according to claim 1, wherein a rotation device is provided so that the rear body 22 of the rear body rotates when the rear wheel 14 passes the unevenness obstacle. The pin connecting portion 24 according to claim 4, wherein the pivoting device has a pivot shaft 26 pivoted in the hole 28 formed in the rear vehicle body 22 and connected to the pivoting pin 21. And a locking member (28) for retaining the pivot shaft (26) in the hole (28).