CN112575831B - Excavator shock attenuation connecting rod and excavator - Google Patents
Excavator shock attenuation connecting rod and excavator Download PDFInfo
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- CN112575831B CN112575831B CN202110039392.2A CN202110039392A CN112575831B CN 112575831 B CN112575831 B CN 112575831B CN 202110039392 A CN202110039392 A CN 202110039392A CN 112575831 B CN112575831 B CN 112575831B
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- protective shell
- excavator
- piston
- shock absorber
- fixing seat
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- 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
- E02F3/3604—Devices to connect tools to arms, booms or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2214—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing the shock generated at the stroke end
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides an excavator shock absorption connecting rod and an excavator, wherein the excavator shock absorption connecting rod comprises a lower fixing seat, an upper fixing seat and a shock absorber, and the shock absorber is fixed between the lower fixing seat and the upper fixing seat. When receiving big impact force, the shock attenuation connecting rod can play the cushioning effect, reduces the impact force that the dipper received to extension dipper life.
Description
Technical Field
The invention relates to the field of mining machinery, in particular to an excavator shock absorption connecting rod and an excavator.
Background
The working device is an important component on the excavator, and mainly comprises a bucket, an arm, a movable arm, a connecting rod, a rocker, a bucket oil cylinder, an arm oil cylinder and a movable arm oil cylinder. In the practical use process, the bucket collides with materials, impact energy generated by collision can be transmitted to each component on the whole working device, the bucket oil cylinder and the connecting rod are of a two-force rod structure in the working device, the force bearing direction is simple, the bucket oil cylinder and the connecting rod have the capability of bearing large one-way impact force through the initial design, the impact force of the bucket rod in collision and impact is complex, the fatigue damage is most easily generated at the stress concentration part to cause the transverse cracking condition, and the large impact force accelerates the fatigue cracking.
The existing method is to improve the internal structure of the bucket rod, increase the strength of key parts and improve the stress concentration condition, but the method can increase the mass of the bucket rod and reduce the working efficiency of the excavator. And when the excavator is in stripping operation or meets severe working conditions such as rock loading with high material density, the traditional bucket rod is easy to crack and break, and the like, so that the failure is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a shock absorption connecting rod of an excavator, which is used for relieving large impact force on a bucket rod and prolonging the service life of the bucket rod.
The invention is realized according to the following technical scheme:
the invention discloses a shock-absorbing connecting rod of an excavator, which comprises:
the lower fixing seat is used for being hinged with the bucket;
the upper fixing seat is used for being hinged with the bucket oil cylinder and the rocker;
and the shock absorber is connected between the lower fixing seat and the upper fixing seat and used for storing and eliminating the impact force applied to the bucket.
Further, the elastic component in the shock absorber is always in a compressed state; when the external resistance is applied to the degree that the elastic component can be compressed again, the shock absorber can be started, so that the shock absorber has a buffering effect; when the external applied resistance is smaller than the elastic force of the elastic component, the shock absorber restores to the original length.
Further, the shock absorber includes a spring and a damper; the buffer comprises an upper connecting seat, a lower connecting seat, an outer pipe, an inner pipe, a piston rod, a piston and a check valve; the inner pipe is provided with at least one oil return hole and an oil discharge hole; the upper side of the outer pipe is provided with a piston hole, and the lower side of the outer pipe is fixed with the lower connecting seat without a gap; the inner pipe is arranged on the inner side of the outer pipe and is fixed on the lower connecting seat; the piston rod is inserted into the piston hole, the end part of the piston rod outside the piston hole is connected with the upper connecting seat, and the spring is sleeved on the piston rod between the outer pipe and the upper connecting seat; the piston and check valve are mounted on the end of the piston rod in the piston bore.
Furthermore, a sealing element is also arranged in the outer pipe and is tightly attached to the upper side of the inner pipe; the diameter of the inner wall of the sealing element is equal to that of the piston rod, and the diameter of the outer wall of the sealing element is larger than that of the outer wall of the inner pipe.
Further, in the initial state, the spring is in the longest state, the piston can be tightly attached to the sealing element, and the oil return opening is located at the connecting position of the piston and the sealing element; the oil outlet is positioned below the oil return port, the aperture of the oil outlet is smaller than that of the oil return port, and the outflow speed of hydraulic oil flowing from the oil outlet to the outer pipe is reduced; the aperture of the check valve is larger than that of the oil outlet, and hydraulic oil between the sealing element and the piston can rapidly flow through the check valve.
Further, a protective shell is arranged outside the shock absorber; the protective shell comprises an upper protective shell and a lower protective shell; the upper protective shell is fixed on the upper fixed seat, and the lower protective shell is fixed on the lower fixed seat; the upper protective shell and the lower protective shell are staggered in the direction parallel to the moving direction.
Further, the length and the width of the upper protective shell are larger than those of the lower protective shell, and the lower protective shell is completely wrapped by the upper protective shell; or the length and the width of the upper protective shell are smaller than those of the lower protective shell, and the upper protective shell is completely wrapped by the lower protective shell.
Furthermore, the number of the shock absorbers is N, N is larger than or equal to 1, and the motion directions of the N shock absorbers are parallel to each other.
Furthermore, a lower shaft hole for placing a pin shaft is arranged on the lower fixing seat, and an upper shaft hole for placing the pin shaft is arranged on the upper fixing seat; the connection mode of bumper shock absorber and lower fixing base is threaded connection, and the connection mode of bumper shock absorber and last fixing base is threaded connection.
The invention also discloses an excavator, which comprises a bucket, a bucket rod, a remote rod, a bucket oil cylinder and the excavator shock absorption connecting rod.
The invention has the beneficial effects that:
1) adopt the shock attenuation connecting rod on the excavator, can pass through the storage in the bumper shock absorber with the partial impact force that the scraper bowl received and eliminate to alleviate the impact force that receives on the dipper, reach the purpose that prevents the dipper fracture, the shock attenuation connecting rod can also resume original length after the impact force is eliminated.
2) The spring in the bumper shock absorber is compression state, only can the bumper shock absorber be started when external force reaches the degree that enables the spring to compress once more, reaches the effect that consumes the impact force, so at normal excavation operation in-process, excavation force does not reach the degree that starts the bumper shock absorber, so the bumper shock absorber can not influence the normal excavation operation of excavator, just can play the effect that alleviates the impact force when only receiving great impact force.
3) The protective housing of adoption disconnect-type can avoid the protective housing to influence the motion of bumper shock absorber, can cover the bumper shock absorber again completely moreover, plays the effect of protection bumper shock absorber.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention with a protective case;
FIG. 3 is a schematic cross-sectional view of the shock absorber in compression;
FIG. 4 is a schematic cross-sectional view of the uncompressed shock absorber;
fig. 5 is a schematic view of the position of the present invention in a working apparatus.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be 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 in specific cases to those skilled in the art.
As shown in fig. 1 to 5, a shock-absorbing connecting rod for an excavator comprises a lower fixing seat 1, an upper fixing seat 2 and a shock absorber 3. The bumper shock absorber 3 is located down between fixing base 1 and the last fixing base 2, and 1 upside of fixing base is installed under to 3 one end of bumper shock absorber, and the other one end of bumper shock absorber 3 is installed at last fixing base 2 downside. The lower fixing seat 1 is further hinged with the bucket, the upper fixing seat 2 is further hinged with a bucket oil cylinder and a rocker, and the shock absorber 3 is used for storing and eliminating impact force applied to the bucket.
Continuing to refer to fig. 1 and 5, a lower shaft hole 1-1 for placing a pin shaft is arranged on the lower fixed seat 1, two symmetrical hinged plates are arranged on the back of the bucket at intervals, the lower fixed seat 1 is arranged between the two hinged plates, and the two hinged plates and the lower fixed seat 1 are connected by penetrating the pin shaft; an upper shaft hole 2-1 for placing a pin shaft is formed in the upper fixing seat 2, the front end of a telescopic rod of the bucket oil cylinder is arranged in the middle of the upper fixing seat, the remote rods on two sides of the bucket rod are respectively arranged on two sides of the upper fixing seat 2, and the two remote rods, the telescopic rod and the upper fixing seat 2 are connected through penetrating the pin shaft.
It should be noted that the spring 3-1 on the damper 3 is always in a compressed state, and when the external resistance is applied to the extent that the spring 3-1 can be compressed again, the damper 3 can be started, so as to play a role in buffering; when the resistance applied from the outside is smaller than the elastic force of the spring 3-1, the damper 3 is restored to the original length.
The following is a preferred embodiment of the above embodiment with respect to the shock absorber:
continuing to refer to fig. 3 and 4, the damper 3 includes a spring 3-1 and a damper 3-2. The buffer 3-2 comprises an upper connecting seat 3-3, a lower connecting seat 3-4, an outer tube 3-5, an inner tube 3-6, a piston rod 3-7, a piston 3-8, a check valve 3-9 and a sealing element 3-10.
The inner pipe 3-6 is provided with an oil return hole 3-11 and an oil discharge hole 3-12, and at least one oil return hole 3-11 and at least one oil discharge hole 3-12. The upper side of the outer tube 3-5 is provided with a piston hole 3-13, and the lower side of the outer tube 3-5 is fixed with the lower connecting seat 3-4 without a gap. The inner pipe 3-6 is arranged at the inner side of the outer pipe 3-5, and the inner pipe 3-6 is fixed on the lower connecting seat 3-4. The upper side of the piston rod 3-7 is fixed with the upper connecting seat 3-3, and the lower side of the piston rod 3-7 is provided with a piston 3-8 and a check valve 3-9. The sealing element 3-10 is fixed in the outer pipe 3-5 and clings to the upper side of the inner pipe 3-6. The piston rod 3-7 is inserted from the piston bore 3-13 and the diameter of the piston rod 3-7 is equal to the diameter of the piston bore 3-13. The diameter of the inner wall of the sealing element 3-10 is equal to that of the piston rod 3-7, and the diameter of the outer wall of the sealing element 3-10 is larger than that of the outer wall of the inner tube 3-6. The diameter of the piston 3-8 is equal to the diameter of the inner wall of the inner tube 3-6.
In the initial state, the spring 3-1 is in the longest state, the piston 3-8 is tightly attached to the sealing element 3-10, and the oil return hole 3-11 is arranged at the joint of the piston 3-8 and the sealing element 3-10. At least one oil drain hole 3-12 is arranged below the oil return hole 3-11, and the diameter of the oil drain hole 3-12 is far smaller than that of the oil return hole 3-11.
Continuing to refer to fig. 1, the connection mode of the shock absorber 3 and the lower fixing seat 1 is threaded connection, that is, the lower connecting seat 3-4 and the lower fixing seat 1 are connected together through threads, four included angles of the lower connecting seat 3-4 are respectively provided with a through hole, the lower fixing seat 1 is provided with four threaded holes concentric with the through holes, and the four threaded holes are fastened through four bolts. The shock absorber 3 is connected with the upper fixing seat 2 in a threaded manner, namely the upper connecting seat 3-3 is connected with the upper fixing seat 2 through threads, a through hole is respectively formed in each of four included angles of the upper connecting seat 3-3, and the upper fixing seat 2 is provided with four threaded holes concentric with the through holes and fastened through four bolts.
Continuing to refer to fig. 2, a protective shell 4 is arranged outside the shock absorber 3, the protective shell 4 is divided into an upper protective shell 4-1 and a lower protective shell 4-2, the upper protective shell 4-1 is fixed on the upper fixing seat 2, and the lower protective shell 4-2 is fixed on the lower fixing seat 1. The lower protective shell 4-2 is connected with the lower fixed seat 1 in a threaded manner. The upper protective shell 4-1 is connected with the upper fixed seat 2 in a threaded manner. The upper protective shell 4-1 is staggered from the lower protective shell 4-2 in a direction parallel to the direction of movement. That is, the length and width of the upper protective shell 4-1 are greater than the length and width of the lower protective shell 4-2, and the lower protective shell 4-2 is completely wrapped by the upper protective shell 4-1. Or the length and width of the upper protective shell 4-1 are smaller than those of the lower protective shell 4-2, and the upper protective shell 4-1 is completely wrapped by the lower protective shell 4-2. When the shock absorber 3 shortens, the upper protective shell 4-1 and the lower protective shell 4-2 are respectively fixed on the upper fixing seat 2 and the lower fixing seat 1, so the upper protective shell 4-1 and the lower protective shell 4-2 are also close to each other, and the upper protective shell 4-1 and the lower protective shell 4-2 are staggered in the direction parallel to the moving direction, so the upper protective shell 4-1 and the lower protective shell 4-2 cannot collide together, and the movement of the shock absorber 3 cannot be influenced.
It should be noted that the number of the dampers 3 is N, N is equal to or greater than 1, and the motion directions of the N dampers are parallel to each other. Of course, the embodiment shows two shock absorbers 3, which are not limited to two, three, or four shock absorbers, and the adjustment is made according to the actual situation.
The concrete implementation process of the shock absorption connecting rod of the excavator is as follows:
the bucket is driven by the bucket rod to move, so that the bucket is fast moved before digging hard materials and has larger kinetic energy. While the hard material can provide great resistance to the bucket, one end of the bucket is connected to the bucket rod, the other end of the bucket is connected to the damping connecting rod, so that the force borne by the bucket can be transmitted to the damping connecting rod, if the resistance is greater than the elastic force of a spring 3-1 in the damper 3, the damper 3 can be shortened, a piston 3-8 in the damper 3 is driven by a piston rod 3-7 to move towards an inner pipe 3-6, the pressure of the inner pipe 3-6 is increased, hydraulic oil can flow into an outer pipe 3-5 from an oil discharge hole 3-12, but the aperture of the oil discharge hole 3-12 is small, the outflow speed of the hydraulic oil can be reduced, therefore, the pressure of the hydraulic oil in the inner pipe 3-6 can be increased, the hydraulic oil in the inner pipe 3-6 can apply the pressure to the piston 3-8, the movement speed of the piston 3-8 can be reduced, and the damper 3 can play a role of buffering, hydraulic oil flows from the outer pipe 3-5 through the oil return hole 3-11 to the gap between the seal 3-10 and the piston 3-8, and the piston 3-8 can also move slowly in the inner pipe 3-6.
At this moment, the scraper bowl rotates round the dipper, and the dipper still can continue the downstream, and the deceleration distance of dipper will prolong greatly, and this will lead to being used in the impact force on the dipper to reduce greatly, plays the effect of protection dipper, also can reduce the interact force between scraper bowl and the dipper moreover, also can play the effect of protection scraper bowl.
When the bucket rod stops moving, the elastic force of the spring 3-1 compressed again is increased, when the resistance applied by the outside is smaller than the elastic force of the spring 3-1, the spring 3-1 drives the upper connecting seat 3-3, the piston rod 3-7 and the piston 3-8 to move outwards, at the moment, the pressure of hydraulic oil between the sealing element 3-10 and the piston 3-8 is larger than the pressure of the lower side of the piston 3-8, the check valve 3-9 is opened to form a backflow channel, and the aperture of the check valve 3-9 is far larger than that of the oil drain hole 3-12, so that the hydraulic oil between the sealing element 3-10 and the piston 3-8 can rapidly flow through the check valve 3-9, and the rebound speed of the piston 3-8 is accelerated until the shock absorber 3 recovers the initial length.
When soft materials such as sand and soil are excavated, the soft materials can provide small resistance for the bucket, so that the bucket can be easily inserted into the materials, when the resistance transmitted to the connecting rod by the materials is smaller than the elastic force of the spring 3-1, the spring 3-1 can not be shortened, the shock absorber 3 can not play a role in buffering and damping, because the resistance of the soft materials is small, the impact force received after the bucket touches the soft materials is small, and the bucket rod can not generate fatigue damage because of too large impact force, so that the whole working device can normally work.
With continued reference to FIG. 5, the present disclosure also provides an excavator comprising a bucket, an arm, a telelever, a bucket cylinder, and the aforementioned excavator shock link.
In summary, adopt the shock attenuation connecting rod on the excavator, can pass through the storage of bumper shock absorber with the partial impact force that the scraper bowl received and eliminate to alleviate the impact force that receives on the dipper, reach the purpose that prevents the dipper fracture, the shock attenuation connecting rod can also resume original length after the impact force is eliminated. The spring in the bumper shock absorber is compression state, only can the bumper shock absorber be started when external force reaches the degree that enables the spring to compress once more, reaches the effect that consumes the impact force, so at normal excavation operation in-process, excavation force does not reach the degree that starts the bumper shock absorber, so the bumper shock absorber can not influence the normal excavation operation of excavator, just can play the effect that alleviates the impact force when only receiving great impact force. Adopt the protective housing of disconnect-type, can avoid the protective housing to influence the motion of bumper shock absorber, can cover the bumper shock absorber again completely moreover, play the effect of protection bumper shock absorber.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An excavator shock link, comprising:
the lower fixing seat is used for being hinged with the bucket;
the upper fixing seat is used for being hinged with the bucket oil cylinder and the rocker;
the shock absorber is connected between the lower fixing seat and the upper fixing seat and used for storing and eliminating impact force applied to the bucket;
the elastic component in the shock absorber is always in a compressed state;
when the external resistance is applied to the degree that the elastic component can be compressed again, the shock absorber can be started, so that the shock absorber has a buffering effect;
when the external applied resistance is smaller than the elastic force of the elastic component, the shock absorber restores to the original length.
2. The excavator shock absorbing linkage as set forth in claim 1, wherein:
the shock absorber comprises a spring and a buffer;
the buffer comprises an upper connecting seat, a lower connecting seat, an outer pipe, an inner pipe, a piston rod, a piston and a check valve;
the inner pipe is provided with at least one oil return hole and an oil discharge hole;
the upper side of the outer pipe is provided with a piston hole, and the lower side of the outer pipe is fixed with the lower connecting seat without a gap;
the inner pipe is arranged on the inner side of the outer pipe and is fixed on the lower connecting seat;
the piston rod is inserted into the piston hole, the end part of the piston rod outside the piston hole is connected with the upper connecting seat, and the spring is sleeved on the piston rod between the outer pipe and the upper connecting seat;
the piston and check valve are mounted on the end of the piston rod in the piston bore.
3. The shock absorbing link for excavators of claim 2, characterized in that:
a sealing element is also arranged in the outer pipe and is tightly attached to the upper side of the inner pipe;
the diameter of the inner wall of the sealing element is equal to that of the piston rod, and the diameter of the outer wall of the sealing element is larger than that of the outer wall of the inner pipe.
4. The excavator shock absorbing linkage as set forth in claim 3, wherein:
in an initial state, the spring is in the longest state, the piston can be tightly attached to the sealing element, and the oil return opening is positioned at the connecting position of the piston and the sealing element;
the oil outlet is positioned below the oil return port, the aperture of the oil outlet is smaller than that of the oil return port, and the outflow speed of hydraulic oil flowing from the oil outlet to the outer pipe is reduced;
the aperture of the check valve is larger than that of the oil outlet, and hydraulic oil between the sealing element and the piston can rapidly flow through the check valve.
5. The excavator shock absorbing linkage as set forth in claim 1, wherein:
a protective shell is arranged outside the shock absorber;
the protective shell comprises an upper protective shell and a lower protective shell;
the upper protective shell is fixed on the upper fixed seat, and the lower protective shell is fixed on the lower fixed seat;
the upper protective shell and the lower protective shell are staggered in the direction parallel to the moving direction.
6. The excavator shock absorbing linkage as set forth in claim 5, wherein:
the length and the width of the upper protective shell are larger than those of the lower protective shell, and the upper protective shell completely wraps the lower protective shell;
or the length and the width of the upper protective shell are smaller than those of the lower protective shell, and the upper protective shell is completely wrapped by the lower protective shell.
7. The excavator shock absorbing linkage as set forth in claim 1, wherein:
the number of the shock absorbers is N, N is larger than or equal to 1, and the motion directions of the N shock absorbers are parallel to each other.
8. The excavator shock absorbing linkage as set forth in claim 1, wherein:
the lower fixing seat is provided with a lower shaft hole for placing a pin shaft, and the upper fixing seat is provided with an upper shaft hole for placing the pin shaft;
the connection mode of bumper shock absorber and lower fixing base is threaded connection, and the connection mode of bumper shock absorber and last fixing base is threaded connection.
9. The utility model provides an excavator, includes scraper bowl, dipper, rocking bar, scraper bowl hydro-cylinder, its characterized in that:
further comprising the excavator shock link of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039392.2A CN112575831B (en) | 2021-01-13 | 2021-01-13 | Excavator shock attenuation connecting rod and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039392.2A CN112575831B (en) | 2021-01-13 | 2021-01-13 | Excavator shock attenuation connecting rod and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112575831A CN112575831A (en) | 2021-03-30 |
| CN112575831B true CN112575831B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110039392.2A Active CN112575831B (en) | 2021-01-13 | 2021-01-13 | Excavator shock attenuation connecting rod and excavator |
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| Country | Link |
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| CN (1) | CN112575831B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200267341Y1 (en) * | 2001-11-21 | 2002-03-09 | 현대중공업 주식회사 | Shock-absorbing apparatus for the arm of excavator |
| CN104264727A (en) * | 2014-09-15 | 2015-01-07 | 上海三一重机有限公司 | Damping bucket rod structure and excavator |
| KR101651969B1 (en) * | 2015-04-30 | 2016-08-31 | 한양대학교 에리카산학협력단 | Vibration suppression device for excavator |
| CN204852157U (en) * | 2015-07-21 | 2015-12-09 | 济宁市技师学院 | Shock absorber |
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2021
- 2021-01-13 CN CN202110039392.2A patent/CN112575831B/en active Active
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| CN112575831A (en) | 2021-03-30 |
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