CN110629815A - Three-degree-of-freedom twelve-rod hydraulic excavator - Google Patents
Three-degree-of-freedom twelve-rod hydraulic excavator Download PDFInfo
- Publication number
- CN110629815A CN110629815A CN201910955358.2A CN201910955358A CN110629815A CN 110629815 A CN110629815 A CN 110629815A CN 201910955358 A CN201910955358 A CN 201910955358A CN 110629815 A CN110629815 A CN 110629815A
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- CN
- China
- Prior art keywords
- bucket
- hinged
- rod
- arm
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/302—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with an additional link
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/308—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working outwardly
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/425—Drive systems for dipper-arms, backhoes or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Earth Drilling (AREA)
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. According to the invention, the flexibility of the output track of the bucket is enhanced and the aim of improving the excavating force is fulfilled by additionally arranging the rocker arm connecting rod and the rocker arm, so that the working efficiency is high.
Description
Technical Field
The invention relates to the field of engineering excavators, in particular to a three-degree-of-freedom twelve-rod hydraulic excavator which is used for improving the working efficiency, enhancing the flexibility of the output track of a bucket and achieving the aim of improving the excavating force.
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 purpose, the invention 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 invention has the outstanding advantages that:
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 three-degree-of-freedom twelve-rod hydraulic excavator according to the present invention.
Fig. 2 is a schematic view of a partial loading structure of the three-degree-of-freedom twelve-rod hydraulic excavator 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 motion of a partial bucket rod of the three-degree-of-freedom twelve-rod hydraulic excavator according to the present invention.
Fig. 5 is a schematic diagram of the partial bucket movement 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 illustrated 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 construed broadly, and may be, for example, fixedly, detachably, or integrally, mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the 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 according to the present invention includes components including a frame 1, a boom 2, a swing arm 3, a swing arm link 4, an arm 5, a bucket 6, a bucket hydraulic cylinder 7, an arm hydraulic cylinder 8, and a boom hydraulic cylinder 9, and the specific structures and connection relationships 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, downward pressure generated at the tail end of the bucket rod is transmitted to the rocker arm through the rocker arm connecting rod, two ends of the movable arm hydraulic cylinder are hinged with the rack and the movable arm respectively, two ends of the bucket rod hydraulic cylinder are hinged with the bucket rod hinge lug and the movable arm hinge lug respectively, one end of the bucket hydraulic cylinder is hinged with the bucket, the other end of the bucket hydraulic cylinder is hinged with the rocker.
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 |
|---|---|---|---|
| CN201910955358.2A CN110629815B (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 |
|---|---|---|---|
| CN201910955358.2A CN110629815B (en) | 2019-10-09 | 2019-10-09 | Three-degree-of-freedom twelve-rod hydraulic excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110629815A true CN110629815A (en) | 2019-12-31 |
| CN110629815B CN110629815B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910955358.2A Active CN110629815B (en) | 2019-10-09 | 2019-10-09 | Three-degree-of-freedom twelve-rod hydraulic excavator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101001895B1 (en) * | 2010-05-18 | 2010-12-17 | 대한석탄공사 | A excavator having remote-controller |
| CN102720229A (en) * | 2012-06-01 | 2012-10-10 | 燕山大学 | Motion redundancy face shovel excavating mechanism capable of optimizing lifting force |
| CN103382728A (en) * | 2013-07-01 | 2013-11-06 | 燕山大学 | Face shovel excavating and loading device capable of optimizing lifting power of moveable arm and drive of bucket rod |
| CN103382729A (en) * | 2013-07-01 | 2013-11-06 | 燕山大学 | Face shovel excavating and loading device capable of increasing pushing force and journey of bucket hydraulic cylinder |
| CN103437386A (en) * | 2013-07-01 | 2013-12-11 | 燕山大学 | Front shovel excavating and loading device capable of automatically realizing bucket lifting energy saving and meeting translation requirement |
| CN210857315U (en) * | 2019-10-09 | 2020-06-26 | 广西大学 | Three-degree-of-freedom twelve-rod hydraulic excavator |
-
2019
- 2019-10-09 CN CN201910955358.2A patent/CN110629815B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101001895B1 (en) * | 2010-05-18 | 2010-12-17 | 대한석탄공사 | A excavator having remote-controller |
| CN102720229A (en) * | 2012-06-01 | 2012-10-10 | 燕山大学 | Motion redundancy face shovel excavating mechanism capable of optimizing lifting force |
| CN103382728A (en) * | 2013-07-01 | 2013-11-06 | 燕山大学 | Face shovel excavating and loading device capable of optimizing lifting power of moveable arm and drive of bucket rod |
| CN103382729A (en) * | 2013-07-01 | 2013-11-06 | 燕山大学 | Face shovel excavating and loading device capable of increasing pushing force and journey of bucket hydraulic cylinder |
| CN103437386A (en) * | 2013-07-01 | 2013-12-11 | 燕山大学 | Front shovel excavating and loading device capable of automatically realizing bucket lifting energy saving and meeting translation requirement |
| CN210857315U (en) * | 2019-10-09 | 2020-06-26 | 广西大学 | Three-degree-of-freedom twelve-rod hydraulic excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110629815B (en) | 2024-02-20 |
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