CN210857315U - Three-degree-of-freedom twelve-rod hydraulic excavator - Google Patents
Three-degree-of-freedom twelve-rod hydraulic excavator Download PDFInfo
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- CN210857315U CN210857315U CN201921679468.2U CN201921679468U CN210857315U CN 210857315 U CN210857315 U CN 210857315U CN 201921679468 U CN201921679468 U CN 201921679468U CN 210857315 U CN210857315 U CN 210857315U
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Abstract
A three-degree-of-freedom twelve-rod hydraulic excavator comprises a rack, a movable arm, a bucket rod, a bucket, and rocker arms, rocker arm connecting rods, a movable arm hydraulic cylinder, a bucket rod hydraulic cylinder and a bucket hydraulic cylinder which are symmetrically arranged; the movable arm is hinged with the rack, the rocker arm and the bucket rod respectively; one end of the rocker arm connecting rod is hinged with the bucket rod, and the other end of the rocker arm connecting rod is hinged with the rocker arm; two ends of the movable arm hydraulic cylinder are hinged with the frame and the movable arm; two ends of the bucket rod hydraulic cylinder are hinged with the bucket rod hinge lug and the movable arm hinge lug; one end of the bucket hydraulic cylinder is hinged with the bucket, and the other end of the bucket hydraulic cylinder is hinged with the rocker arm. The utility model discloses an add rocking arm connecting rod and rocking arm, realize the flexibility ratio of reinforcing scraper bowl output orbit, improve the target of digging force, work efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the engineering excavator and specifically relates to a be used for improving work efficiency, the flexibility ratio of reinforcing scraper bowl output orbit realizes improving the twelve pole hydraulic shovel of three degrees of freedom that digging force is the target.
Background
The hydraulic excavator has the advantages of simple structure, realization of complex actions and the like, and is widely applied to the aspects of mechanical construction in the building and traffic industry, farmland transformation, water conservancy and hydropower, mine excavation, modern military engineering and the like. In the course of working with an excavator, the work environment becomes more and more complicated, and thus the demand for the excavating force of the excavator becomes higher and higher. In a traditional hydraulic excavator, the track output of the root part of a bucket on the plane is realized by the combined driving of a movable arm hydraulic cylinder and an arm hydraulic cylinder, and then the bucket is turned over by the driving of an independent bucket hydraulic cylinder. However, due to the structural limitation, the problems that the common hydraulic excavator is insufficient in excavating force in the operation process and low in working efficiency exist. Therefore, it is necessary to develop a novel hydraulic excavator for improving the working efficiency, enhancing the flexibility of the bucket output trajectory, and achieving the goal of improving the excavating force.
Disclosure of Invention
The invention aims to provide a three-degree-of-freedom twelve-rod hydraulic excavator, which can effectively solve the problems of inflexible action, limited working space and low excavating force of the traditional hydraulic excavator.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the three-degree-of-freedom twelve-rod hydraulic excavator comprises components including a rack, a movable arm, an arm, a rocker arm connecting rod, a movable arm hydraulic cylinder, an arm hydraulic cylinder and a bucket hydraulic cylinder, and the specific structures and connection relations of the components are as follows:
the movable arm is hinged to the rack, the rocker arm and the bucket rod respectively, one end of the rocker arm connecting rod is hinged to the bucket rod, the other end of the rocker arm connecting rod is hinged to the rocker arm, downward pressure generated at the tail end of the bucket rod is transmitted to the rocker arm through the rocker arm connecting rod, the two ends of the movable arm hydraulic cylinder are hinged to the rack and the movable arm, the two ends of the bucket rod hydraulic cylinder are hinged to the bucket rod hinge lug and the movable arm hinge lug, one end of the bucket hydraulic cylinder is hinged to the bucket, the other end of the bucket hydraulic cylinder is hinged to the rocker arm.
The bucket rod is provided with three hinge holes, the upper hinge hole is hinged with the bucket, the middle hinge hole is hinged with the movable arm, the tail hinge hole is hinged with the rocker arm connecting rod, a pair of hinge lugs are symmetrically arranged in the middle of the machine frame, the hinge lugs are provided with hinge holes, the bucket rod hydraulic cylinder barrel is hinged with the bucket rod hinge lugs, and the movable arm hinge lugs at the end parts of the piston rods of the bucket rod hydraulic cylinders are hinged.
Two groups of rocker arms, rocker arm connecting rods, movable arm hydraulic cylinders, bucket rod hydraulic cylinders and bucket hydraulic cylinders which are hinged to the frame, the movable arms, the bucket rods and the buckets are symmetrically installed.
The utility model discloses outstanding advantage lies in:
1. because the bucket rod of the hydraulic excavator adopts four pairs of rods, the average stress of the bucket rod of the hydraulic excavator is reduced, the stress distribution is more uniform, and the strength of the bucket rod is improved.
2. Hydraulic excavator rocking arm connecting rod one end is terminal articulated with the dipper, and the other end is articulated with the rocking arm, can transmit the terminal decurrent pressure that produces of dipper to the rocking arm through the rocking arm connecting rod, and scraper bowl pneumatic cylinder one end is connected with the rocking arm, and the other end is articulated with the scraper bowl, and pressure transmits the scraper bowl pneumatic cylinder and then promotes the scraper bowl through the rocking arm, has further increased the digging force.
3. The bucket rod and the rocker arm connecting rod form a parallel mechanism, so that the bearing capacity of the excavator can be increased when the excavating thrust of the bucket is increased; one end of the bucket hydraulic cylinder is connected with the rocker arm, and the other end of the bucket hydraulic cylinder is hinged with the bucket, so that the flexibility of the bucket output track is enhanced.
4. Two mechanisms of the rocker arm and the rocker arm connecting rod are symmetrically added to the excavator, so that the force transmission is reasonably utilized while the number of hydraulic push cylinders is not increased, and the excavating force of the hydraulic excavator is enhanced.
Drawings
Fig. 1 is a schematic view of the overall structure of a twelve-rod hydraulic excavator with three degrees of freedom according to the present invention.
Fig. 2 is a schematic view of a local loading structure of a twelve-rod hydraulic excavator with three degrees of freedom according to the present invention.
Fig. 3 is a schematic diagram of the three-degree-of-freedom twelve-rod hydraulic excavator according to the present invention.
Fig. 4 is a schematic diagram of the local bucket rod movement of the three-degree-of-freedom twelve-rod hydraulic excavator according to the present invention.
Fig. 5 is a schematic diagram of the local bucket motion of the three-degree-of-freedom twelve-rod hydraulic excavator according to the present invention.
Labeled as: 1. a frame; 2. a movable arm; 3. a rocker arm; 4. a rocker arm connecting rod; 5. a bucket rod; 6. a bucket; 7. a bucket hydraulic cylinder; 8. a bucket rod hydraulic cylinder; 9. a boom cylinder; R1-R12-hinge.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
It should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" in the description of the present invention are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 4, the three-degree-of-freedom twelve-rod hydraulic excavator of the present invention includes a frame 1, a movable arm 2, a rocker arm 3, a rocker arm connecting rod 4, a dipper 5, a bucket 6, a bucket hydraulic cylinder 7, a dipper hydraulic cylinder 8 and a movable arm hydraulic cylinder 9, and the concrete structure and connection relationship of the components are as follows:
one end of the movable arm 2 is hinged on the frame 1 through a hinge R1; one end of a movable arm hydraulic cylinder 9 is hinged on the frame 1 through a hinge R2, and the other end of the movable arm hydraulic cylinder is hinged with a movable arm 2 through a hinge R3; one end of the arm hydraulic cylinder 8 is hinged with the pair of hinge lugs of the movable arm 2 through a hinge R10, and the other end of the arm hydraulic cylinder is hinged with the pair of hinge lugs of the arm 5 through a hinge R11; one end of the bucket rod 5 is hinged with the movable arm 2 through a hinge R6, and the other end of the bucket rod is hinged with the bucket 6 through a hinge R12; one end of the bucket hydraulic cylinder 7 is hinged with the bucket through a hinge R9, and the other end of the bucket hydraulic cylinder is hinged with the rocker arm 3 through a hinge R8; one end of the rocker arm connecting rod 4 is hinged with the rocker arm 3 through a hinge 4, the other end of the rocker arm connecting rod is hinged with the tail end of the bucket rod 5 through a hinge 5, pressure is transmitted to the bucket hydraulic cylinder through the rocker arm to further push the bucket, and the rocker arm 3 is hinged with the movable arm 2 through a hinge R7.
The working principle and the process are as follows:
(1) excavation conditions
Under the working condition, the movable arm hydraulic cylinder 9 contracts, so that the movable arm 2 rotates anticlockwise around the hinge R6, the excavating device is close to an excavating plane as much as possible, the arm hydraulic cylinder 8 contracts to the shortest distance, the arm 5 rotates anticlockwise, and the bucket 6 is adjusted to an initial excavating pose through the bucket hydraulic cylinder 7; when the tooth point of the bucket 6 is in contact with the digging surface, firstly, the arm hydraulic cylinder 8 is extended for a certain length, then the bucket hydraulic cylinder 7 is driven to adjust the position of the bucket 6, and the operation is repeated for 3-4 times until the arm hydraulic cylinder 8 is extended to the maximum position; the bucket cylinder 7 is driven to rotate the bucket 6 clockwise for loading, the arm cylinder 8 is compressed to recover the arm 5, the boom cylinder 9 is driven to lift the boom 2, and the excavation task is completed.
(2) Working condition of unloading
Under this condition, the bucket cylinder 7 contracts to rotate the bucket 6 counterclockwise to be unloaded, the arm cylinder 8 contracts to retract the arm 5, and the boom cylinder 9 is driven to lift the boom 2, thereby completing the unloading task.
Claims (3)
1. The utility model provides a twelve pole hydraulic shovel of three degrees of freedom, composition component includes frame, swing arm, dipper, rocking arm connecting rod, swing arm pneumatic cylinder, dipper pneumatic cylinder and scraper bowl pneumatic cylinder, its characterized in that, the concrete structure and the relation of connection of component are:
the movable arm is hinged with the rack, the rocker arm and the bucket rod respectively, one end of the rocker arm connecting rod is hinged with the bucket rod, the other end of the rocker arm connecting rod is hinged with the rocker arm, two ends of a movable arm hydraulic cylinder are hinged with the rack and the movable arm respectively, two ends of a bucket rod hydraulic cylinder are hinged with a bucket rod hinging lug and a movable arm hinging lug respectively, one end of a bucket hydraulic cylinder is hinged with a bucket, and the other end of the bucket hydraulic cylinder is hinged.
2. The three-degree-of-freedom twelve-rod hydraulic excavator according to claim 1, wherein the bucket rod is provided with three hinge holes, the upper hinge hole is hinged with the bucket, the middle hinge hole is hinged with the movable arm, the tail hinge hole is hinged with the rocker arm connecting rod, a pair of hinge lugs are symmetrically arranged in the middle of the bucket rod facing the frame, the hinge lugs are provided with hinge holes, the bucket rod hydraulic cylinder barrel is hinged with the bucket rod hinge lugs, and the movable arm hinge lugs are hinged at the end part of the piston rod of the bucket rod hydraulic cylinder.
3. The three-degree-of-freedom twelve-rod hydraulic excavator according to claim 1, wherein the two sets of rocker arms, rocker arm connecting rods, boom hydraulic cylinders, arm hydraulic cylinders and bucket hydraulic cylinders hinged to the frame, the boom, the arm and the bucket are symmetrically installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679468.2U CN210857315U (en) | 2019-10-09 | 2019-10-09 | Three-degree-of-freedom twelve-rod hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679468.2U CN210857315U (en) | 2019-10-09 | 2019-10-09 | Three-degree-of-freedom twelve-rod hydraulic excavator |
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| Publication Number | Publication Date |
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| CN210857315U true CN210857315U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921679468.2U Active CN210857315U (en) | 2019-10-09 | 2019-10-09 | Three-degree-of-freedom twelve-rod hydraulic excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629815A (en) * | 2019-10-09 | 2019-12-31 | 广西大学 | Three-degree-of-freedom twelve-rod hydraulic excavator |
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- 2019-10-09 CN CN201921679468.2U patent/CN210857315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629815A (en) * | 2019-10-09 | 2019-12-31 | 广西大学 | Three-degree-of-freedom twelve-rod hydraulic excavator |
| CN110629815B (en) * | 2019-10-09 | 2024-02-20 | 广西大学 | Three-degree-of-freedom twelve-rod hydraulic excavator |
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