KR100388745B1 - Heavy Duty Bucket Manipulator - Google Patents

Abstract

The present invention relates to a bucket operating device for a wheel loader installed in a boom assembly, wherein a fixing member for rotatably fixing an end portion of each boom member of the boom assembly is formed integrally on both sides, and a through hole is drilled in the center upper part. A front frame having a support plate, and a bracket mounted to the rear portion of the support plate in which the through hole is perforated, a body mounted on the bracket of the front frame and reversible, and rotatable in a forward or reverse direction with respect to the body. An actuating means having a rotating rod, a fixed shaft fixed to the rotating rod of the actuating means, a variable shaft connected to the fixed shaft and having a variable length, connected to the variable shaft, and having a spiral portion formed therein, by means of a bearing, the boom assembly A driving rod rotatably fixed to each cross member of the movable member, A linkage mechanism having a guide that is integrally formed with an interlocking portion and a guide pin, and a first crank member fixed to a central portion of a fixed rod having both ends fixed between the respective boom members of the boom assembly. A second crank member rotatably fixed to the crank member and formed with a guide groove in which the guide pin of the guide is movable, and one end of which is rotatably fixed to the second crank member, and the other end of which is fixed to the bucket. It is made of a crank mechanism provided with a connecting member, it is possible to ensure the driver's front working clock normally even when the boom assembly is in a vertical state.

Description

Heavy Duty Bucket Manipulator

The present invention relates to a bucket operating device of heavy equipment, such as a wheel loader, and more particularly, when the boom assembly of the heavy equipment is maintained vertically or when the bucket is maintained at the top of the driver's front driving clock or work A bucket manipulator is configured to not block a clock.

In general, various heavy equipments such as wheel loaders, skid steer loaders, excavators, forklifts, and the like are conveniently used in workplaces that perform various tasks.

The wheel loader, which is most widely used among these heavy equipments, is used to move an unshaped object such as soil or sand by using a bucket or to load it at a high place. A heavy equipment, comprising: a boom assembly operated by a boom cylinder in front of a vehicle body and a bucket rotatably fixed to the tip of the boom assembly to perform actual work, the bucket being mounted to the boom assembly and operated hydraulically. Is activated by a bucket cylinder.

That is, as shown in Figure 1, the wheel loader is provided with a wheel (2) at the lower portion of the vehicle body 1 can be quickly moved, the rear end is rotatably fixed to the vehicle body (1) in the front boom The boom assembly 4 which is rotated by the cylinder is provided, and such a boom assembly 4 is usually composed of two boom members 6 and 7, and each of these boom members 6 and 7 is For example, the cross cylinder 8 is connected to each other and maintains its own rigidity, and between each of the boom members 6 and 7, a bucket cylinder 3 for manipulating the bucket 5 to be described later is installed. It is.

In addition, the front of such a boom assembly (4) is provided with a bucket (5) capable of loading various types of objects. In addition, the vehicle body 1 is provided with a cabin 1a which is provided with various operation means for moving the wheel loader itself or manipulating the boom assembly 4 or the bucket 5 while the driver or operator is on board. It is.

Such wheel loaders are operated or manipulated in various ways in various workplaces, for example, when the boom assembly 4 is maintained in a vertical state or when the bucket is located at the top. In this case, the boom assembly is disposed vertically in front of the cabin 1a of the wheel loader.

As such, when the boom assembly is kept fixed vertically in front of the cabin for a long time, the driver who rides in the cabin is blocked by the front driving clock or work clock by the boom assembly in front of the cabin, so that it can perform accurate and proper work. There was a problem that there was no problem, because it is due to the excessive installation area of the bucket cylinder mounted between each boom member of the boom assembly to shield most of the space between each member.

Accordingly, the present invention has been invented to solve the problems as described above, an object of the present invention is to provide a bucket operating apparatus of heavy equipment that can normally secure the driver's driving clock or work clock when working with heavy equipment.

Another object of the present invention is installed in the boom assembly to ensure the driver's forward driving clock and work clock through each boom member of the boom assembly even when the boom assembly of the wheel loader is maintained perpendicular to the front of the cabin It is to provide a bucket operating device.

These objects are attained by the present invention. According to one aspect of the present invention, a wheel is installed on a boom assembly consisting of two boom members, the buckets of which are rotatably fixed at each end and integrally connected to each other by crossmembers. In the bucket operation device of the loader, a support member is mounted to the vehicle body of the wheel loader, the holding member is formed integrally on both sides and the end of each boom member of the boom assembly is rotatably fixed, and the through-hole is punched in the upper center A front frame having a plate and a bracket mounted to the rear portion of the support plate in which the through hole is drilled, a body mounted on the bracket of the front frame and reversibly operated, and a rotating rod rotatable forward or reverse with respect to the body. An operating means having a fixed shaft fixed to the rotating rod of the operating means, the fixed shaft being connected to A variable shaft having a variable length, a drive rod connected to the variable shaft and having a spiral portion, the drive rod being rotatably fixed to each cross member of the boom assembly by a bearing, and an occlusal screw movably screwed to the spiral portion. A linkage mechanism including a guide having a unit and a guide pin integrally formed therein, a first crank member fixed to a central portion of a fixed rod having both ends fixed between respective boom members of the boom assembly, and pivoting on the first crank member A second crank member having a guide groove in which the guide pin of the guide is movable and being movable in the longitudinal direction, and a connecting member having one end rotatably fixed to the second crank member and the other end fixed to the bucket. It is characterized by consisting of a crank mechanism.

1 is a partial side view schematically showing a working state of a bucket of a wheel loader which is one of the conventional heavy equipment.

2 is an exploded perspective view of a bucket operating device according to the present invention.

Figure 3 is an exploded perspective view showing each of the linkage mechanism and the front frame of the bucket control device according to the present invention in detail.

Figure 4 shows the bucket operating device according to the present invention installed on the boom assembly of heavy equipment

Giving front perspective view.

Figure 5 shows the bucket operating device according to the present invention installed on the boom assembly of heavy equipment

Giving back perspective.

<Description of Symbols for Main Parts of Drawings>

10: front frame 20: operating means

30: linkage mechanism 40: crank mechanism

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view of the bucket control device according to the present invention, Figure 3 is an exploded perspective view showing the linkage mechanism and the front frame of the bucket control device according to the invention in detail, Figure 4 A front perspective view showing a state in which a bucket operating device according to the present invention is installed in a boom assembly of heavy equipment is shown, and FIG. 5 is a rear perspective view showing a state in which a bucket operating device according to the present invention is installed in a boom assembly of heavy equipment. .

2 to 5, the bucket operating apparatus of the heavy equipment according to the present invention includes a front frame 10, the operating means 20, the linkage mechanism 30 and the crank mechanism 40.

In more detail, the front frame 10 is mounted to the front lower portion of the cabin of the vehicle body of the wheel loader as shown in Figure 1 and the shape may be formed in various forms. The front frame 10 includes a support plate 11 facing the front face of the wheel loader, and on both sides of the support plate 11 each of the boom members 6, 7 of the boom assembly 4. Fixing members 12 and 13, which can be fixed to one end rotatably, are integrally formed.

A through hole 14 is formed in the upper portion of the support plate 11, and a bent bracket 15 is integrally mounted on the back of the portion through which the through hole 14 is drilled, for example, by welding.

The front frame 10 is equipped with an actuating means 20, the actuating means 20 is preferably composed of a reversible motor that can be operated in the forward and reverse direction, the actuation means 20 is forward and reverse The body 21 is fixed to the bracket 15 and the rotating rod 22 is rotated in accordance with the operation of the body.

Optionally, the rotary rod 22 may be provided with a connector 23 so that the fixed shaft of the linkage mechanism described later in detail can be easily and firmly fixed, and the body 21 of the actuating means 20 For example, the driver who is in the cabin of the wheel loader is connected to a switch or operating lever not shown on the control panel equipped with various switches or operating levers for operating the boom assembly or bucket, so that the driver can control the operation means as desired. Can be.

The linkage mechanism 30 is connected to the actuation means 20, and the linkage mechanism 30 is fixed to the rotating rod 22 by the connector 23 of the actuation means 20. It includes. Variable shaft 32 is connected to the fixed shaft 31, the variable shaft 32 is composed of two splines (32a, 32b) so that each of the splines can be changed in the longitudinal direction of each other It is preferable that the antenna is formed of an antenna or a telescope that cannot rotate.

In addition, a drive rod 33 is connected to the variable shaft 32, and the connecting rod 33 is formed with a spiral portion 33a of a predetermined length along the longitudinal direction at the center thereof.

Here, it is preferable that the fixed shaft 31, the variable shaft 32 and the driving rod 33 are connected to each other in turn by a joint 34 such as a single joint or a double joint, for example, each of these components. This is to transfer power normally even during a large angle change while the rotational driving force of the operating means 20 is transmitted through these. In addition, bearings 35 are installed at both ends of the driving rod 33 to facilitate rotation of the driving rod 33, and each bearing 35 is a boom assembly 4 of the wheel loader. Are fixed to respective crossmembers 8, respectively.

In particular, a guide 36 is inserted into the drive rod 33 so as to be movable along its longitudinal direction, and the guide 36 is screwed to the spiral portion 33a of the drive rod 33. The engaging portion 36a is formed integrally, and the guide pin 37 is protruded integrally in both sides at the upper portion of the guide 36.

The linkage mechanism 30 is provided with a crank mechanism 40 linked thereto, and the crank mechanism 40 has a fixed rod 41 having both ends fixed to respective boom members 6 and 7 of the boom assembly 4. A first crank member 42 fixed to a central portion of the first crank member 42 and a second crank member 43 hinged to an end of the first crank member 42 and rotatably fixed to the first crank member 42. Include.

The first crank member 42 and the second crank member 43 are preferably formed in a form in which two plates face each other, and in particular, each plate of the second crank member 43 has the same size. The guide grooves 44 having mutually opposing guide grooves 44 are formed to be cut, and each end of the guide pins 37 provided in the guides 36 of the linkage mechanism 30 is movably inserted into the guide grooves 44. do.

On the other hand, the second crank member 37 is connected to the connecting member 45, more specifically, one end of the connecting member 45 is rotatably fixed to the lower end of the second crank member 43, In addition, the other end is rotatably fixed to the bucket (5) is fixed to the end of each boom member (6, 7) of the boom assembly (4) serves to actually adjust the bucket (5) in a rotational manner.

When such a bucket operating device according to the present invention is mounted on a boom assembly, an operation clock is formed between the respective boom members by reducing the space occupied by the linkage mechanism of the operating device between the respective boom members of the boom assembly. Is understood to expand relatively.

Thus, according to the use method and the operation mode of the bucket operating device when the bucket operating device according to the present invention is installed in the boom assembly of the wheel loader, for example, the driver operates the operation means 20 to rotate the bucket 5 in one direction. When operating the body 21 of the operating means in one direction by operating a switch or operating lever connected to the body 21 of the), at the same time the rotary rod 22 is rotated in one direction, for example (+) direction, the rotary rod The fixed shaft 31 fixed to 22 is rotated in the same direction.

When the fixed shaft 31 is rotated as described above, the variable shaft 32 and the driving rod 33 which are fixedly fixed to the fixed shaft 31 are also simultaneously rotated in the positive (+) direction, in which case the driving rod ( It can be seen that 33 is easily and smoothly rotated by a bearing 35 provided at its respective end. At this time, the guide 36 is moved in one direction by the bite portion 36a of the guide 36 screwed to the spiral portion 33a of the drive rod 33.

When the guide 36 moves in one direction, for example, forward, the guide pin 37 formed on the guide 36 moves along the guide groove 44 of the second crank member 43 of the crank mechanism 40. At the same time, the second crank member 43 is pushed forward, and accordingly, the connecting member 45 fixed to the end of the second crank member 43 pushes the lower portion of the bucket 5, thereby providing the respective boom members ( A bucket 5 rotatably fixed to the ends of 6, 7 is rotated toward the body 1 of the wheel loader.

Of course, in such a state, if the operation of the switch or operation lever connected to the operating means 20 is stopped, the bucket is held in an operated state, and then, by changing the position of the bucket using a boom cylinder (not shown) to perform a predetermined operation. As can be seen, in this case, even if the length of each boom member of the boom assembly is variable, it is understood that the operation of the boom assembly can be achieved without disturbing by the variable shaft of the linkage mechanism.

Conversely, the driver operates the body 21 of the operating means in the other direction by manipulating a switch or operating lever connected to the body 21 of the operating means 20 to rotate the bucket in the other direction, for example toward the workpiece. Then, at the same time, the rotary rod 22 is rotated in the other direction, for example, the reverse (-) direction, and the fixed shaft 31 fixed to the rotary rod 22 is rotated in the same direction.

When the fixed shaft 31 is rotated in this manner, the variable shaft 32 and the driving rod 33 which are connected to the fixed shaft 31 are also simultaneously rotated in the reverse (-) direction. In this case, the driving rod 33 It can be seen that is rotated easily and smoothly by a bearing 35 provided at its respective end. At this time, the guide 36 is moved in the other direction by the occlusal portion 36a of the guide 36 screwed to the spiral portion 33a of the drive rod 33.

When the guide 36 moves in the other direction, for example, backward, the guide pin 37 formed on the guide 36 is along the guide groove 44 of the second crank member 43 of the crank mechanism 40. At the same time, the second crank member 43 is pulled backward while the connecting member 45 fixed to the end of the second crank member 43 pulls the lower part of the bucket 5, respectively. The bucket (5) rotatably fixed to the ends of the boom members (6) and (7) is rotated toward the workpiece.

Of course, in such a state, if the operation of the switch or operation lever connected to the operating means 20 is stopped, the bucket is held in an operated state, and then, by changing the position of the bucket using a boom cylinder (not shown) to perform a predetermined operation. In this case, of course, a predetermined operation can be easily performed by changing the position of the bucket by manipulating the boom assembly using the boom cylinder.

In particular, even when the operation is performed in a state where the boom assembly 4 is maintained vertically or when the operation is executed while the bucket is maintained at the upper portion, the driver may keep the respective boom members 6 of the boom assembly 4 secured widely. It is possible to clearly grasp the working state in front through the space between, so that the driver can work stably and easily.

As a result, according to the bucket operating device according to the present invention, the space occupied by the linkage mechanism between the respective boom members of the boom assembly is minimized, so that the driver's forward driving clock even in a working state in which the boom assembly is kept vertical to the driver's front. Alternatively, the work clock is normally secured, thereby improving workability and safety.

Claims (3)

In the bucket loader of the wheel loader which is installed in the boom assembly consisting of two boom members connected to each other integrally by a cross member rotatably fixed to each end, The support plate is mounted to the vehicle body of the wheel loader, the fixing member is formed integrally on both sides, the end of each boom member of the boom assembly is rotatably fixed, the support plate perforated through the upper portion, and the through hole A front frame having a bracket mounted to a rear portion of the support plate; An actuating means mounted to a bracket of the front frame and having a reversible body, and a rotating rod rotatable in a forward or reverse direction with respect to the body; A fixed shaft fixed to the rotating rod of the operating means, a variable shaft connected to the fixed shaft, the variable shaft being variable in length, connected to the variable shaft and having a spiral formed therein, the bearing being rotatable to each cross member of the boom assembly. A linkage mechanism including a driving rod fixed to the guide, and a guide in which the bite and the guide pin are movably screwed to the spiral portion; The first crank member is fixed to the center portion of the fixed rod which is fixed at both ends between the respective boom members of the boom assembly, the guide groove which is rotatably fixed to the first crank member and the guide pin of the guide is movable in the longitudinal direction And a crank mechanism having a second crank member, and a connecting member having one end rotatably fixed to the second crank member and the other end fixed to the bucket. The fixed shaft, the variable shaft and the driving rod of the linkage mechanism are jointed. The bucket operating device of the wheel loader, characterized in that connected to each other by interlocking. 3. The bucket loader of claim 1 or 2, wherein the variable shafts are composed of two splines that are mutually variable in the longitudinal direction but are mutually coupled such that they cannot be rotated with respect to each other.