JP4488737B2 - Push lever used for backhoe - Google Patents

Description

[0001]
(Field of Invention)
The present invention relates to a drilling tool, and particularly to a backhoe.
[0002]
(Technical background)
Backhoes are widely used to excavate objects and transport them from one location to another. Backhoes are typically used for excavating grooves or digging the ground to lay building structures, road foundations, cables, pipes, and the like.
[0003]
A conventional backhoe includes a first arm pivotably attached to the tractor and a second arm pivotally attached to the first arm so as to form a scissors. Typically, separate hydraulic actuators are used to actuate each arm and bucket. Some backhoes include an extendable second arm. There is also a backhoe that is provided with a gripping device facing the bucket and that grips an object between the gripping device and the bucket. Some gripping devices are fixedly attached to the backhoe and do not rotate with respect to the arm. These gripping devices are not easy to use because the arm and bucket must be in an appropriate position relative to the gripping device before the object is picked up. Another gripping device is provided with a separate hydraulic actuator that moves only the gripping device. These backhoes are expensive to manufacture due to the cost of additional hydraulic actuators and the cost of coupling the gripping device to the control device of the tractor. There are also other gripping devices that include a push lever that rotates simultaneously with the bucket. These backhoes are also unwieldy because the bucket and gripper must be in the proper position before use. Furthermore, since the rotating gripping device interferes with the rotating bucket and is difficult to dig, these backhoes are difficult to operate.
[0004]
(Summary of Invention)
The excavator of the present invention is configured such that the push lever assembly is coupled to an extendable linkage having a bucket for holding material. The push lever assembly is configured to rotate when the link device is extended, and the bucket and the push lever assembly can be operated independently.
[0005]
Furthermore, these features, advantages and objects of the present invention will be understood by those skilled in the art with reference to the following specification and claims.
[0006]
Detailed Description of the Preferred Embodiment
Hereinafter, the terms “top”, “bottom”, “left”, “right”, “front”, “back”, “vertical”, “horizontal” and terms derived therefrom are described in FIG. Relevant to the invention in the direction shown. However, it should be understood that the invention may take a variety of other directions unless otherwise specified. It is also to be understood that the specific devices and processes illustrated in the attached drawings and described in the related specification are merely examples of the inventive concept as defined in the claims. . Certain dimensions and other physical features relating to the embodiments disclosed herein are not to be considered limiting unless otherwise specified in the claims.
[0007]
Reference numeral 10 (FIG. 1) generally represents the drilling tool of the present invention. The excavator 10 includes an extendable linkage 12 having a bucket 14 and a push lever assembly 16 that holds material in the bucket 14. The push lever assembly 16 is configured to rotate when the linkage 12 is extended, and both the bucket 14 and the push lever assembly 16 can be driven independently.
[0008]
In the example shown in the figure, the excavator 10 is coupled to the boom 18 at the first turning point 11 so as to turn freely in a scissors manner. In order to operate the excavator 10 at various positions, the boom 18 is configured as a swivel appendage at the rear of the powered mobile tractor (not shown). The combination of tractor, excavator 10 and boom 18 is commonly referred to as a “backhoe”. By rotating the boom 18 downward relative to the tractor and rotating the excavator 10 upward relative to the boom 18, the bucket 14 coupled to the excavator 10 can be extended far from the tractor. . The excavator 10 includes an extendable link device 12 composed of a first telescoping body 20 and a second telescoping body 22, and the second telescoping body 22 has an effective length of the link device 12 and In order to change the reach range of the bucket 14, the first telescopic stretcher 20 is slidable. The illustrated first telescopic stretcher 20 and second telescopic stretcher 22 are a pair of coaxial telescopic stretchers. The first telescoping body 20 and the second telescoping body 22 are illustrated as being hollow and substantially rectangular, but the first telescoping body 20 and the second telescoping body 22 may have any geometric cross section, The second telescopic body 22 may be solid throughout the entire cross section. In order to extend the link device 12, the second telescopic telescopic body 22 is moved outward from the first turning point 11 in the first telescopic telescopic body 20 by a telescopic hydraulic actuator (not shown) in the second telescopic telescopic body 22. To stretch.
[0009]
The extendable link device 12 shown includes a bucket 14 and a telescopic telescopic hydraulic actuator 26 that rotates the bucket 14. The illustrated bucket 14 is pivotably attached to a second pivot point 30 at one end 28 of the second telescopic body 22. Because the opening 28 of the bucket 14 faces the tractor to scoop dirt and other objects close to the tractor, the bucket 18 can be moved in the direction of the tractor by the boom 18 and the extendable linkage 12. . The telescopic telescopic hydraulic actuator 26 is coupled to a pivot sleeve 31 attached to the top surface 32 of the first telescopic telescopic body 20 in the vicinity of the first pivot point 11. The telescopic hydraulic actuator 26 is also coupled to the first arm 33 and the second arm 35 so as to be pivotable. The first arm 33 is further pivotably coupled to the second telescopic stretch body 22 between the second pivot point 30 and the first telescopic stretch body 20. Similarly, the second arm 35 is pivotally coupled to the bucket 14 at a point further away from the second pivot point 30. With the telescopic hydraulic actuator 26, the first arm 33 and the second arm 35, the bucket 14 can rotate more than 90 ° around the second pivot point 30 and around one end 28 of the second telescopic body 22. Configured as follows. The telescopic telescopic hydraulic actuator 26 is operated so that the telescopic telescopic hydraulic actuator 26 extends with the second telescopic telescopic body 22 while the second telescopic telescopic body 22 extends in the first telescopic telescopic body 20. Is possible. Therefore, during this operation, the bucket 14 does not rotate with respect to the second telescopic body 22 even if the link device 12 extends. Similarly, the telescopic telescopic hydraulic actuator 26 can be operated to extend the telescopic telescopic hydraulic actuator 26 when the second telescopic telescopic body 22 is stationary with respect to the first telescopic telescopic body 20. Is possible. Thus, during this operation, the bucket 14 rotates toward the tractor and the boom 18. Further, the link device 12 is extended so that the bucket 14 is rotated with respect to the second telescopic stretcher 22, and the speed is higher than the speed at which the second telescopic stretcher 22 extends in the first telescopic stretcher 20. Or the telescopic hydraulic actuator can be extended at a slower speed.
[0010]
The push lever assembly 16 shown in FIGS. 3 and 4 is coupled to the extendable link device 12 and has a push lever 34 rotatably coupled to the second telescoping elastic body 22, a first telescoping telescopic body 20 and The arm 36 is rotatably coupled to both of the push levers 34. The push lever 34 (FIG. 4) includes a pair of parallel beams 38 coupled by a first transverse beam 40, a second transverse beam 42, and a third transverse beam 44. The beam 38 is preferably slightly bent in the vertical direction, and a tooth 45 for gripping the object is provided between the push lever 34 and the bucket 14. The first transverse beam has a base 46 extending between the parallel beams 38 and a pair of legs 48 extending substantially parallel to the beams outside the parallel beams 38 and has a substantially U shape. More specifically, one of the legs 48 is removably attached to the first transverse beam 40 outside the parallel beam 38 by bolts or other methods so that the push lever 34 can be easily attached to the extendable link device 12. Detachable. It is shown that a leg 48 is attached to the base 46 of the first cross beam 40 with a bolt 200. In order to couple the push lever 34 to the second telescopic telescopic body 22, the pivot pin 50 is inserted into each opening 52 at the second pivot point 30 of the leg 48, the bucket 14 and one end 28 of the second telescopic telescopic body 22. . Therefore, the push lever 34 and the bucket 14 have a common rotation axis. The base 46 of the first cross beam 40 is provided with a central notch that opposes the second telescopic body 22 to accommodate the second telescopic body 22 when the push lever 34 rotates in a direction away from the bucket 14. A second transverse beam 42 extends between the beams 38 at the center of the push lever 34 and includes a pair of sleeves 56 that couple to the arm 36. The third transverse beam 44 extends between the beams 38 at one end of the beam 38 opposite to the first transverse beam 40. As will be described in detail below, the third cross beam 44 is used to grip an object between the bucket 14 and the push lever 34.
[0011]
The illustrated arm 36 is a long shaft having a through hole 58 at a first end and a pair of sleeves 60 at a second end. Each sleeve 60 includes an opening 62 having a common axis parallel to the through hole 58 at the first end of the arm 36. A pin 64 (FIGS. 1 and 2) is inserted through the opening 65 in the shoulder 66 coupled to one end of the first telescopic telescopic body 20 and the through hole 58 of the arm 36, and the arm 36 is inserted into the first telescopic telescopic body. 20 is pivotably coupled. A pin 66 (FIGS. 1 and 2) is also inserted through the sleeve 60 of the arm 36 and the opening 68 of the pair of sleeves 36 on the second transverse beam 42 of the push lever 34, and the arm 36 is pivotally coupled to the push lever 34. The The push lever 34 is turned around the second turning point 30 by the arm 36.
[0012]
Explaining the operation surface, the push lever 34 turns around the second turning point 30 relative to the second telescopic body by extending the link device 12. As shown in FIG. 2, the third cross beam 44 of the push lever 34 is adjacent to the bucket in the position where the link device 12 is retracted to the maximum. At the position where the link device 12 is retracted to the maximum, the angle θ between the push lever 34 and the second telescopic body 22 becomes the maximum value. When the second telescopic body 22 extends from the first telescopic body 20, the push lever 34 rotates in a direction away from the bucket 14. The distance between the pin 64 that couples the push lever 34 to the arm 36 and the second pivot point 30 and the pin 64 that couples the push lever 34 to the arm 36 and the pin that couples the arm 36 to the first telescoping body 20 The distance θ between the push lever 34 and the second telescopic telescopic body 22 is the angle θ between the push lever 34 and the second telescopic body 22, so that the second turning point 30 connects the arm 36 to the first telescopic telescopic body 20. The smaller the distance from 66, the smaller. Therefore, the arm 36 rotates the push lever 34 in a direction away from the second telescopic body 22. When the position of the link device 12 extends to the maximum, the third transverse beam 44 of the push lever 34 is at a position farthest from the bucket 14. Similarly, when the second telescopic telescopic body 22 slides into the first telescopic telescopic body 20, the arm 36 directs the push lever 34 of the push lever assembly 16 toward the bucket. Because, as the second pivot point 30 moves in the direction of the pin 66 that couples the arm 36 to the first telescopic body 20, the angle θ between the push lever 34 and the second telescopic body 22 becomes larger. Because it becomes. Accordingly, when the first and second telescopic telescopic bodies expand and contract, the push lever 34 of the push lever assembly 16 pivots around the second pivot point.
[0013]
By first creating an opening 100 (shown in FIG. 1) between the push lever 34 and the bucket 14 and placing an object in the opening 100, the bucket 14 and push lever assembly 16 of the illustrated excavator 10 are shown. Can be used to grip an object between the bucket 14 and the push lever 34 of the push lever assembly 16. Then, the object can be grasped by the excavator 10 by rotating the bucket 14 in the direction of the push lever 34 or extending the link device 12 and rotating the push lever 34 in the direction of the bucket 14. Further, the object can be moved up and down by rotating the link device 12 with respect to the boom 18 and further moved by moving the power tractor.
[0014]
The advantage of the illustrated push lever assembly 16 is that the push lever assembly 16 can improve the operation of an existing backhoe having the extendable linkage 12 and the bucket 14. First, the shoulder 66 is attached to the first telescopic stretch body 20 by welding or other methods. Next, the pin that connects the bucket 14 to the second telescopic telescopic body 22 is removed, and the old pin is replaced by inserting a new pin 14 through the push lever 34, the bucket 14, and the second telescopic telescopic body 22. . Third, in order to pivotably couple the arm 36 to the first telescoping telescopic body 20, the arm 36 is inserted into the push lever 34 and the shoulder by inserting a pin 64 through the opening 65 in the shoulder 66 and the hole 58 in the arm 36. Coupled to portion 66. Finally, a pin 66 is inserted through the sleeve 60 of the arm 36 and the opening 68 of the pair of sleeves 56 attached to the second transverse beam 42 of the push lever 34, so that the arm 36 is pivotally coupled to the push lever 34. . It should be noted that the sequence of steps for coupling the push lever assembly 16 to the linkage 12 can be changed.
[0015]
Another advantage of the push lever assembly 16 is that the push lever 34 and arm 36 can be easily attached and removed from the extendable linkage 12. As shown in FIG. 5, the pin 50 used for insertion into the push lever 34, the bucket 14, and the second telescopic stretcher 22 includes a pair of hooks 300 at each end of the circular rod 302 of the pin 50. Is included. Each trough 300 is constituted by a ring 303 having a radial crack 304 from the inner diameter of the ring 303 to the outer diameter of the ring 303. The heel also includes an inclined surface 306 having a notch opening for a screw 308 or other attachment that extends across the split 304 in the ring 303 of the heel 300. Since the screw 308 is screwed into the notch opening in the inclined surface 306, the ring 300 is compressed in the vicinity of the crack 304, so that the flange 300 is securely coupled to the rod 302. Therefore, by removing one of the flanges 300 from one side of the rod 302, the pin 50 can be attached to the bucket 14 and the second telescopic stretcher 22. Then, the rod 302 is passed through the bucket 14 and the second telescopic body 22. Accordingly, the screw 308 of the rod 300 is loosened, and the rod 300 is transferred to the bucket 14 and the rod 302 outside the second telescopic body 22. As a result, the rod 302 has a pair of cylindrical end portions on the outer side of each rod 300. Thereafter, the push lever 34 is easily attached to the pin 50 by first removing one of the legs 48 on the first transverse beam 40 of the push lever 34. Then, one of the cylindrical end portions of the rod 302 outside the rod 300 is inserted into the opening 52 of the leg 48 of the first cross beam 40 attached to the push lever 34. The other end of the cylindrical end of the rod 302 outside the rod 300 is inserted into the opening 52 of the leg 48 removed from the first transverse beam 40 of the push lever 34. Thereafter, the removable leg 48 is attached to the push lever 34 with the bolt 200, so that the push lever 34 is securely coupled to the pin 50 and the second telescopic body 22. Further, the pin 64 and the pin 66 that connect the arm 36 to the first telescopic telescopic body 20 are a common removable pin, one end is a fixed rod, and the other end is a removable cam on the pin clip. Is done. Therefore, the pin 64 and the pin 66 can be easily removed. As a result, the arm 36 can be easily detached from the first telescopic body 20 and the push lever 34. When the push lever 16 is removed in this manner, only the pin 50 and the shoulder 66 are left in the link device 12. Thus, the push lever assembly 16 can be easily attached to and removed from the linkage 12 when the bucket 14 is used for excavation only and when the push level assembly 16 is not needed because it is used for another purpose. .
[0016]
The above description is only that of the preferred embodiment. Experts, inventors and users in the field may modify the invention. For example, the extendable link device 12 may also have a pair of main bodies that extend in a manner other than telescoping (eg, the main body of the extendable link device can slide relative to each other, but one of the main bodies is not located within the other main body). included. Accordingly, the foregoing embodiments are merely for purposes of illustration and are not intended to limit the scope of the invention. The scope of the invention is defined in the claims, and is interpreted based on the principles of patent law, including doctrine of equivalents.
[Brief description of the drawings]
FIG. 1 shows a side view of a boom coupled to a drilling tool of the present invention in a fully retracted position.
FIG. 2 shows the side of the boom coupled to the drilling tool of the present invention in a partially extended position.
FIG. 3 shows an exploded side view of the push lever assembly of the present invention.
FIG. 4 shows an exploded top surface of the push lever assembly of the present invention.
FIG. 5 shows a perspective view of a rod used to couple a push lever assembly to the extendable link device of the present invention.

Claims (83)

An extendable link device composed of a first telescopic stretcher (20) and a second telescopic stretcher (22) ;
A bucket (14) and a push lever (34) rotatably coupled to a turning point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
It is composed of one end of the first telescoping elastic body and an arm (36) rotatably coupled to the opposite side of the bucket at the center of the push lever,
The push lever rotates when the link device extends,
Both the bucket and the push lever can be operated independently,
Drilling tool.   The extendable link device includes a first telescopic stretch body and a second telescopic stretch body, and the link device is configured to extend when the first and second telescopic stretch bodies extend. The excavator of claim 1, wherein the bucket is rotatably coupled to a second telescopic body. An extendable link device including a bucket;
An excavator comprised of a push lever assembly that holds material in the bucket,
The push lever assembly rotates as the link device extends, and both the bucket and the push lever assembly are independently operable;
The extendable link device includes a first telescopic body and a second telescopic body, and the link device is configured to extend when the first and second telescopic bodies extend. The bucket is rotatably coupled to a second telescopic body,
The push lever assembly includes a push lever that is rotatably coupled to a second telescopic body, and an arm that is rotatably coupled to the first telescopic body and the push lever.
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
Drilling tool.   The excavator according to claim 3, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic elastic body, and the bucket and the push lever have a common rotation axis.   5. The excavator according to claim 4, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the central portion of the push lever. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. The excavator of claim 5, comprising a pair of parallel beams having. The first transverse beam includes a base extending between the pair of parallel beams and a pair of legs extending to the outside of the pair of parallel beams, and one of the legs is detachably attached to the base. The excavator of claim 6, wherein a push lever can be easily attached and removed from the linkage. The excavator according to claim 1, wherein the bucket and the push lever are rotatably coupled to a turning point at one end of the extendable link device. A link device including a first telescopic body and a second telescopic body displaceable relative to the first telescopic body, and when the first and second telescopic bodies extend, In the excavator that the link device is extended and the bucket is rotatably coupled to one end of the second telescoping elastic body,
A bucket (14) and a push lever (34) rotatably coupled to a pivot point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
It is composed of one end of the first telescoping elastic body and an arm (36) rotatably coupled to the opposite side of the bucket at the center of the push lever,
The push lever rotates around the pivot point when the first and second telescopic bodies extend and contract,
Both the bucket and the push lever are independently operable,
Drilling tool. A link device including a first telescopic stretcher and a second telescopic stretcher; the link device extends when the first and second telescopic stretches extend; and a bucket extends to the second telescopic stretcher. In an excavator that is rotatably coupled to one end of the body,
A push lever assembly is rotatably coupled to a pivot point of the one end of the second telescopic body and one end of the first telescopic body;
The push lever assembly rotates about the pivot point when the first and second telescopic retractors extend, and both the bucket and the push lever assembly are independently operable;
The push lever assembly includes a push lever that is rotatably coupled to a second telescopic body, and an arm that is rotatably coupled to the first telescopic body and the push lever.
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
Drilling tool .   The excavator according to claim 10, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic elastic body, and the bucket and the push lever have a common rotation axis.   The excavator according to claim 11, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the central portion of the push lever. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. The excavator of claim 12, comprising a pair of parallel beams having. The first transverse beam includes a base extending between the pair of parallel beams and a pair of legs extending to the outside of the pair of parallel beams, and one of the legs is detachably attached to the base. 14. The excavator of claim 13, wherein a push lever can be easily attached and removed from the link device.   The excavator according to claim 9, wherein the bucket is rotatably coupled to the turning point of the second telescopic body. A link device comprising a first telescopic stretch body and a second telescopic stretch body, and configured to extend when the first and second telescopic stretch bodies extend,
A bucket and a push lever that are rotatably coupled to a turning point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
It is composed of one end of the first telescoping elastic body and an arm (36) rotatably coupled to the opposite side of the bucket at the center of the push lever,
The push lever rotates around the turning point when the first and second telescopic bodies extend and contract,
Both the bucket and the push lever are independently operable,
Drilling tool. A link device comprising a first telescopic stretch body and a second telescopic stretch body, and configured to extend when the first and second telescopic stretch bodies extend,
A bucket coupled to one end of the second telescopic body;
An excavator comprising a pivot point at the one end of the second telescopic body and a push lever assembly rotatably coupled to one end of the first telescopic body;
The push lever rotates around the pivot point when the first and second telescopic bodies extend and contract, and both the bucket and the push lever can be operated independently,
The push lever assembly includes a push lever that is rotatably coupled to a second telescopic body, and an arm that is rotatably coupled to the first telescopic body and the push lever.
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
Drilling tool.   The excavator according to claim 17, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic elastic body, and the bucket and the push lever have a common rotation axis.   The excavator according to claim 18, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the central portion of the push lever. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. The excavator of claim 17, comprising a pair of parallel beams having. The first transverse beam includes a base extending between the pair of parallel beams and a pair of legs extending to the outside of the pair of parallel beams, and one of the legs is detachably attached to the base. The excavator of claim 20, wherein a push lever can be easily attached and removed from the linkage.   The excavator according to claim 16, wherein the bucket is rotatably coupled to the turning point of the second telescopic body. A link device including a first telescopic stretch body and a second telescopic stretch body, and when the first and second telescopic stretch bodies are extended, the link device is extended to one end of the second telescopic stretch body. A push lever assembly coupled to an excavator including a coupled bucket comprising:
A push lever configured to be rotatably coupled to a second telescopic body;
A first telescopic body and an arm configured to be rotatably coupled to the push lever;
When both the arm and the push lever are coupled to the excavator, when the first and second telescopic telescopic members expand and contract, the arm rotates the push lever around the second telescopic telescopic member,
When both the push lever and bucket are coupled to the excavator, both the push lever and bucket can be operated independently,
Push lever assembly.   24. The push lever assembly of claim 23, wherein the push lever is configured to be rotatably coupled to one end of a second telescopic telescopic body, and the bucket and the push lever have a common axis of rotation.   25. The push lever assembly according to claim 24, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the push lever central portion. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. 24. The push lever assembly of claim 23, comprising a pair of parallel beams having. The first transverse beam includes a base extending between the pair of parallel beams and a pair of legs extending to the outside of the pair of parallel beams, and one of the legs is detachably attached to the base. 27. The push lever assembly of claim 26, wherein the push lever can be easily attached and removed from the link device.   24. The push lever assembly of claim 23, further comprising a shoulder configured to attach to a first telescopic telescopic body and rotatably coupling the arm to the first telescopic telescopic body. A link device including a first telescopic stretch body and a second telescopic stretch body; when the first and second telescopic stretch bodies are extended, the link device is extended, and at one end of the second telescopic stretch body A method of coupling a push lever assembly to an excavator that also includes a bucket coupled to a pivot point, comprising:
A push lever is rotatably coupled to the turning point of the second telescopic body,
An arm is rotatably coupled to the first telescopic body and the push lever;
Coupling both the arm and the push lever to a drilling tool, expanding and contracting the first and second telescopic telescopic bodies, and rotating the push lever around the second telescopic telescopic body with the arms;
Coupling both the push lever and bucket to the drilling rig so that both push lever and bucket can be operated independently;
Method. The boom ,
An extendable link device coupled to the boom at a first end and to a bucket at a second end;
In order to hold the material in the bucket, a push lever assembly in which one end of an arm is coupled to the first telescopic elastic body of the link device and a push lever is rotatably coupled to the second telescopic elastic body. Configured,
The push lever assembly rotates as the link device extends,
Both the bucket and the push lever assembly are independently operable,
The bucket and push lever assembly are rotatably coupled to a pivot point at one end of the second telescopic body;
The excavator has a common rotation axis for the bucket and the push lever .   The extendable link device includes a first telescopic stretch body and a second telescopic stretch body, and the link device is configured to extend when the first and second telescopic stretch bodies extend. 32. The excavator of claim 30, wherein the bucket is rotatably coupled to a second telescopic body.   31. The excavator of claim 30, wherein the bucket and push lever assembly are rotatably coupled to a pivot point at one end of the extendable linkage. A drilling machine having a link coupled to the boom and the boom system, the link device includes a first telescoping member and the second telescoping member is coupled to the boom, the linkage includes first and second It is configured to extend as the two telescopic stretchers stretch,
A bucket is rotatably coupled to a pivot point at one end of the second telescopic body;
A push lever assembly is rotatably coupled to a pivot point of the one end of the second telescopic body and one end of the first telescopic body;
The bucket and the push lever have a common axis of rotation;
The push lever assembly rotates about the pivot point when the first and second telescopic bodies extend and contract,
Both the bucket and the push lever assembly are independently operable,
Excavator. The push lever assembly includes:
A push lever rotatably coupled to the second telescopic body;
An arm that is rotatably coupled to the first telescopic body and the push lever,
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
The excavator according to claim 33.   The excavator according to claim 33, wherein the bucket is rotatably coupled to the pivot point of the second telescoping body. The boom ,
A link device comprising a first telescopic stretcher and a second telescopic stretcher coupled to the boom , the link device configured to extend when the first and second telescopic stretches extend;
A bucket and a push lever that are rotatably coupled to a turning point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
A push lever assembly rotatably coupled to a pivot point of the one end of the second telescopic body and one end of the first telescopic body;
The push lever assembly rotates around the pivot point when the first and second telescopic bodies extend and contract,
Both the bucket and the push lever assembly are independently operable,
Excavator. The push lever assembly includes:
A push lever rotatably coupled to the second telescopic body;
An arm that is rotatably coupled to the first telescopic body and the push lever,
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
The excavator according to claim 36.   38. The excavator according to claim 37, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic stretcher, and the bucket and the push lever have a common rotation axis. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. 38. The excavator of claim 37, comprising a pair of parallel beams having.   The excavator according to claim 36, wherein the bucket is rotatably coupled to the pivot point of the second telescoping body. An extendable link device comprising a first telescoping body (20) and a second telescoping body (22);
A bucket (14) and a push lever (34) rotatably coupled to a pivot point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
It is composed of one end of the first telescoping elastic body and an arm (36) rotatably coupled to the opposite side of the bucket at the center of the push lever,
The push lever is configured to rotate when the link device is extended,
Both the bucket and the push lever can be operated independently,
The push lever and the bucket are detachably coupled to the extendable link device with a pivot pin ,
The swivel pin includes a removable scissors that allow the swivel pin to be removed from the extendable link device.
Drilling tool.   The extendable link device includes a first telescopic stretch body and a second telescopic stretch body, and the link device is configured to extend when the first and second telescopic stretch bodies extend. 42. The excavator of claim 41, wherein the bucket is rotatably coupled to a second telescopic body. For push lever assemblies ,
A push lever rotatably coupled to the second telescopic body;
An arm that is rotatably coupled to the first telescopic body and the push lever,
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
The excavation tool according to claim 42.   44. The excavation tool according to claim 43, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic elastic body, and the bucket and the push lever have a common rotation axis.   45. The excavation tool according to claim 44, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the central portion of the push lever. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. The excavator of claim 45, comprising a pair of parallel beams having. 42. The excavator of claim 41, wherein the bucket and the push lever are rotatably coupled to a pivot point at one end of the extendable link device. The bucket is removably coupled to the extendable linkage with a pivot pin;
Wherein the pivot pin includes a removable collar was detached so the pivot pin from the bucket and the extension freely linking device,
42. The excavation tool according to claim 41. A link device including a first telescopic stretcher and a second telescopic stretcher; the link device extends when the first and second telescopic stretches extend; and a bucket extends to the second telescopic stretcher. In an excavator that is rotatably coupled to one end of the body,
An extendable link device comprising a first telescoping body (20) and a second telescoping body (22);
A bucket (14) and a push lever (34) rotatably coupled to a pivot point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
It is composed of one end of the first telescoping elastic body and an arm (36) rotatably coupled to the opposite side of the bucket at the center of the push lever,
The push lever rotates around the turning point when the first and second telescopic bodies extend and contract, and both the bucket and the push lever can be operated independently,
Said push lever and said second telescoping member, the arm is coupled removably to the first telescoping member,
Drilling tool . For push lever assemblies ,
A push lever rotatably coupled to the second telescopic body;
An arm that is rotatably coupled to the first telescopic body and the push lever,
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
The excavation tool according to claim 49.   51. The excavator according to claim 50, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic elastic body, and the bucket and the push lever have a common rotation axis.   52. The excavator according to claim 51, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the push lever central portion. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. 53. The excavator of claim 52, comprising a pair of parallel beams having.   The excavator of claim 49, wherein the bucket is rotatably coupled to the pivot point of the second telescoping body. The bucket is detachably coupled to the second telescopic body with a pivot pin,
Wherein the pivot pin includes a removable collar was detached so the pivot pin from the bucket and the second telescoping member,
The excavation tool according to claim 49. A link device comprising a first telescopic stretch body and a second telescopic stretch body, and configured to extend when the first and second telescopic stretch bodies extend,
A bucket and a push lever coupled to a pivot point at one end of the second telescopic body;
The bucket and the push lever have a common axis of rotation;
A pivot lever assembly rotatably coupled to the pivot point of the one end of the second telescopic body and the one end of the first telescopic body;
The push lever assembly rotates around the pivot point when the first and second telescopic bodies extend and retract, and both the bucket and the push lever can be operated independently,
The push lever assembly is detachably coupled to the second telescopic body and the first telescopic body;
Drilling tool. The push lever assembly includes:
A push lever rotatably coupled to the second telescopic body;
An arm that is rotatably coupled to the first telescopic body and the push lever,
The arm rotates the push lever around the second telescopic elastic body when the first and second telescopic elastic bodies expand and contract.
The excavation tool according to claim 56.   The excavator according to claim 57, wherein the bucket and the push lever are rotatably coupled to one end of a second telescopic stretcher, and the bucket and the push lever have a common rotation axis.   59. The excavation tool according to claim 58, wherein the arm is rotatably coupled to one end of the first telescoping elastic body and to the bucket opposite side of the push lever central portion. The push lever includes a first transverse beam coupled to the second telescopic body, a second transverse beam coupled to the arm, and a third transverse beam that grips an object between the bucket and the push lever. 58. The excavator of claim 57, comprising a pair of parallel beams having. A supportable first arm member on the boom member;
A second arm member attached to and replaceable with the first arm member;
An instrument rotatably coupled to the second arm member;
First replacement means for replacing the second arm member with respect to the first arm member;
Second replacement means for replacing the instrument with respect to the second arm member;
A third arm member rotatably coupled to the second arm member and cooperating with the instrument to grip an object;
A first link member rotatably coupled to the first arm member and rotatably coupled to the third arm member;
Assembly with 62. The assembly of claim 61, wherein the first replacement means includes a fluid operated cylinder assembly. 64. The assembly of claim 62, wherein the second replacement means includes a fluid operated cylinder assembly. 64. The assembly of claim 63, wherein the cylinder of the second replacement means is rotatably coupled to the first arm member. The second link member rotatably coupled to the second arm member and the second replacement means, and a third link member rotatably coupled to the second link member and the instrument are included. 61. The assembly according to 61. 66. The assembly of claim 65, wherein at least a portion of the second arm member, the second link member, the third link member, and at least a portion of the instrument form a four bar linkage. 64. The assembly of claim 61, wherein the first link member is rotatably coupled to one end of the first arm member. 62. The assembly according to claim 61, wherein the first link member is rotatably coupled to intermediate portions at both ends of the third arm member. 62. The assembly of claim 61, wherein the instrument is a bucket. 70. The assembly of claim 69, wherein the bucket includes an opening disposed on a side facing the third arm member.   62. The assembly of claim 61, wherein the third arm member includes a tooth portion attached to the material. 64. The assembly of claim 61, wherein the instrument and the third arm member have a common axis of rotation. The assembly according to claim 72, wherein the common rotation shaft is disposed at one end of the second arm member. 62. The assembly of claim 61, wherein the first arm member and the second arm member are telescopically coupled to each other. 75. The assembly of claim 74, wherein the second arm member is nested within the first arm member. A boom member;
A first arm member operably coupled to the boom member;
A second arm member attached to and replaceable with the first arm member;
An instrument rotatably coupled to the second arm member;
First replacement means for replacing the second arm member with respect to the first arm member;
Second replacement means for replacing the instrument with respect to the second arm member;
A third arm member having one end rotatably coupled to the lower side of the second arm member and cooperating with the instrument to grip an object;
A first link member rotatably coupled to the first arm member and rotatably coupled to the third arm member;
With machine. 77. The machine of claim 76, wherein the cylinder of the second replacement means comprises a fluid operated cylinder assembly that is rotatably coupled to the first arm member. 77. The machine of claim 76, wherein the first arm member and the second arm member are telescopically coupled to each other. 79. The machine of claim 78, wherein the second arm member is nested within the first arm member. The machine according to claim 76, wherein the first link member is rotatably coupled to one end of the first arm member and is rotatably coupled to an intermediate portion between both ends of the third arm member. A first arm member operably coupled to the boom member; a second arm member attachable to and replaceable with the first arm member; an instrument rotatably coupled to the second arm member; An assembly accessory comprising: a first replacement means for replacing the second arm member with respect to the arm member; and a second replacement means for replacing the instrument with respect to the second arm member,
A third arm member that can be rotatably coupled to the lower side of the second arm member;
A first link member having one end coupled to the lower side of the first arm member and the other end rotatably coupled to an intermediate portion between the end portions of the third arm member;
With accessories. 82. The accessory of claim 81, wherein the third arm member comprises a set of teeth for grasping an object between the instrument and the third arm member. 82. The accessory of claim 81, wherein the third arm member can be coupled to the second arm member on a common axis of rotation with the instrument, and the first link member can be coupled to one end of the first arm member. .

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