CN108487364B - Oil cylinder protection mechanism of excavator bucket - Google Patents
Oil cylinder protection mechanism of excavator bucket Download PDFInfo
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- CN108487364B CN108487364B CN201810203589.3A CN201810203589A CN108487364B CN 108487364 B CN108487364 B CN 108487364B CN 201810203589 A CN201810203589 A CN 201810203589A CN 108487364 B CN108487364 B CN 108487364B
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- bucket
- rocker
- rod
- cylinder
- connecting rod
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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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2271—Actuators and supports therefor and protection therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention relates to an excavator bucket oil cylinder protection mechanism, which aims to solve the problem that an existing excavator bucket oil cylinder is damaged due to external force action. According to the invention, the protection plate of the bucket cylinder is positioned above the bucket cylinder, so that the impact of materials on the bucket cylinder and the fouling of barrier materials on the piston rod of the bucket cylinder can be effectively resisted, the protection effect on the bucket cylinder is achieved, and the service life of the bucket cylinder is prolonged.
Description
Technical Field
The invention relates to an upper part of an excavator, in particular to an oil cylinder protection mechanism of a bucket of the excavator.
Background
The oil cylinder plays a role as an actuator in a working device as a common component in an excavator, and is divided into a boom cylinder, a bucket bar cylinder, and a bucket cylinder. Under the mutual cooperation of the three types of oil cylinders, the excavator has strong excavating force. Wherein the thrust provided by the bucket cylinder accounts for the largest proportion of the digging force. The hydraulic excavator is usually exposed to the open air for working, and the quality of the oil cylinder is also a great test. Therefore, whether the bucket oil cylinder works normally or not is important.
As shown in fig. 1, the bucket 1 is hinged to the front end of the arm 2, and the excavator bucket cylinder 3 is mounted to the rear of the upper side of the excavator arm 2, and the rear end thereof is hinged to the arm 2. A bucket link mechanism connected to the arm is attached to the front portion of the upper side surface of the arm 2. The bucket connecting rod mechanism comprises a first rocker 6, a second rocker 4, a first connecting rod 5 and a second connecting rod 7; first rocker 6 and second rocker 4 are the double-rod structure that respectively sets up a pole in 2 both sides of dipper, and first rocker 6 and second rocker 4 are arranged around on the dipper, and the lower extreme of first rocker 6 and second rocker 4 rotates through the round pin axle and connects on the dipper, and the upper end that first rocker 6 is located the two poles of dipper both sides is through round pin hub connection, and the upper end that second rocker 4 is located the two poles of dipper both sides also is through round pin axle fixed connection. The front end and the rear end of the second connecting rod 7 are respectively connected with the first rocker 6 and the pin shaft at the upper end of the second rocker 4 in a rotating mode, the front end of the first connecting rod 5 is connected with the bucket 1 in a rotating mode, the rear end of the first connecting rod 5 is connected with the pin shaft at the upper end of the second rocker 4 in a rotating mode, the pin shaft at the upper end of the first rocker 6 is connected with the front end of the bucket oil cylinder 3 in a rotating mode, the first rocker 6, the second rocker 4, the second connecting rod 7 and the bucket rod 2 form a quadrilateral connecting rod mechanism, and the bucket oil cylinder pushes the bucket to rotate around the hinge point of the bucket and the.
Under usual operational environment, the position of the bucket cylinder of the excavator is above the material, and no external force can act on the bucket cylinder to damage the bucket cylinder during normal operation, so the bucket cylinder does not need a protective device to protect the cylinder, and meanwhile, the bucket cylinder can be arranged at the rear part of the bucket rod due to the bucket connecting rod mechanism, is higher in position and far away from the bucket and the material, so that the bucket cylinder is not easy to be damaged by collision of the material or a piston rod is stained by the material. But when the excavator is working in a special working environment, for example: when the excavator excavates loose material blocks at a high position at a low position, the material blocks fall from the high position to hit a bucket cylinder, and powdery hard materials fall on a cylinder piston rod to cause fouling of the bucket cylinder piston rod; when the bucket is pitched down, an object having a certain height may strike the bucket cylinder. The bucket cylinder has no protection, and the cylinder barrel or the piston resists the external force from materials, so the bucket cylinder is easy to damage.
Disclosure of Invention
The invention provides a protective mechanism for a bucket cylinder of an excavator, aiming at solving the technical problem of no protection of the bucket cylinder of the excavator, so as to realize necessary protection of the bucket cylinder of the excavator.
The technical scheme for realizing the purpose of the invention is as follows: the utility model provides a structure excavator bucket hydro-cylinder protection mechanism, includes the dipper, connects the scraper bowl at the dipper front end, sets up the scraper bowl link mechanism, both ends correspondence that are connected at the dipper front portion and front end and scraper bowl and the scraper bowl of dipper rear portion articulated scraper bowl hydro-cylinder, and its characterized in that still includes hydro-cylinder protection mechanism, hydro-cylinder protection mechanism includes pendulum rod, the scraper bowl hydro-cylinder guard plate of two pole structures, two parallel settings of pole of pendulum rod in both sides and the lower extreme at the rear portion of dipper and the dipper rotates to be connected, the upper end of two poles of pendulum rod through round pin axle interconnect and pass through the round pin axle with the rear end of scraper bowl hydro-cylinder guard plate rotates to be connected, scraper bowl hydro-cylinder guard plate is located the top of scraper bowl hydro-cylinder and the front end of scraper bowl hydro-cylinder guard plate with the rear end of scraper. According to the invention, the swing rod, the bucket cylinder protection plate, the bucket link mechanism and the bucket rod form the quadrilateral link mechanism, the swing rod swings back and forth under the telescopic pushing of the bucket cylinder, the bucket cylinder protection plate is always positioned above the bucket cylinder, and the impact of materials on the bucket cylinder and the fouling of barrier materials on a piston rod of the bucket cylinder can be effectively resisted, so that the protection effect on the bucket cylinder is achieved, and the service life of the bucket cylinder is prolonged. In the invention, when the bucket rod extends forwards, the bucket cylinder protection plate and the bucket cylinder are positioned above the bucket rod; if the bucket rod is in the vertical position, the bucket oil cylinder protection plate and the bucket oil cylinder are located on the front side of the bucket rod.
In the bucket cylinder protection mechanism of the excavator, the bucket link mechanism comprises a first rocker, a second rocker, a first connecting rod and a second connecting rod; first rocker and second rocker are respectively the double-rod structure that sets up a pole in the dipper both sides, first rocker and second rocker are arranged around on the dipper, the lower extreme of first rocker and second rocker all rotates through the round pin axle and connects on the dipper, both ends are respectively through round pin axle and first rocker around the second connecting rod, the upper end of second rocker rotates and is connected, the front end of first connecting rod rotates with the scraper bowl to be connected, the rear end of first connecting rod rotates with the upper end of second rocker to be connected, the upper end of first rocker rotates with the front end of scraper bowl hydro-cylinder and scraper bowl hydro-cylinder guard plate simultaneously and is connected. In the technical scheme, the length of the bucket rod is usually long, and the installation position of the bucket oil cylinder is located at the rear part of the bucket rod as far as possible through the connection effect of the first connecting rod and the second connecting rod, so that the bucket oil cylinder is far away from the bucket or a working device. If the length of the bucket rod is short, a second swing rod and a second connecting rod can be omitted, namely the bucket connecting rod mechanism comprises a first swing rod and a first connecting rod; the first rocker is a double-rod structure with a rod arranged on each of two sides of the bucket rod, the lower end of the first rocker is rotatably connected to the bucket rod through a pin shaft, the front end of the first connecting rod is rotatably connected with the bucket, the rear end of the first connecting rod is rotatably connected with the upper end of the first rocker, and the upper end of the first rocker is rotatably connected with the front end of the bucket oil cylinder and the bucket oil cylinder protection plate.
In the excavator bucket cylinder protection mechanism, the bucket cylinder protection plate comprises an anti-collision beam and an upper baffle plate, wherein the anti-collision beam is arranged in the front-back direction, and the upper baffle plate is fixed on the anti-collision beam. The anti-collision beam is mainly used for resisting the impact of large materials on the bucket cylinder, and the baffle is used for separating the fouling of small materials on the piston rod of the bucket cylinder.
In the excavator bucket cylinder protection mechanism, the front end of the anti-collision beam is provided with the support leg extending downwards, and the tail end of the support leg is rotatably connected with the upper end of the first rocker. The landing leg is being realized bucket cylinder guard plate and is being rotated with the upper end of first rocker and be connected, also improves the distance of anticollision roof beam and baffle and bucket cylinder simultaneously, avoids bucket cylinder mutual interference and makes things convenient for the installation of guard plate appearing at flexible in-process.
Compared with the prior art, the excavator bucket oil cylinder protection mechanism has the advantages of simple structure, convenience in installation and easiness in manufacturing. The protective effect can be achieved on the bucket oil cylinder, so that the normal work of the bucket oil cylinder of the excavator in a special working environment is prolonged, and the damage rate of the oil cylinder is reduced.
Drawings
Fig. 1 is a layout view of a bucket cylinder in a conventional excavator.
FIG. 2 is a schematic structural view of the oil cylinder protection mechanism of the excavator bucket.
FIG. 3 is a schematic structural diagram of a swing link in the bucket cylinder protection mechanism of the excavator of the present invention.
Part names and serial numbers in the figure:
the bucket comprises a bucket 1, a bucket rod 2, a bucket cylinder 3, a first rocker 6, a first connecting rod 5, a second rocker 4, a second connecting rod 7, a rocker 8, a bucket cylinder protection plate 9, an anti-collision beam 91, supporting legs 92 and a baffle 93.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 2, the excavator bucket cylinder guard mechanism in the present embodiment includes an arm 2, a bucket 1, a bucket link mechanism, and a bucket cylinder 3. The bucket 1 is hinged at the front end of the bucket rod 2, the excavator bucket cylinder 3 is installed at the rear part of the upper side surface of the excavator bucket rod 2, and the rear end of the excavator bucket cylinder is hinged with the bucket rod 2. A bucket link mechanism connected to the arm is attached to the front portion of the upper side surface of the arm 2. The bucket connecting rod mechanism comprises a first rocker 6, a second rocker 4, a first connecting rod 5 and a second connecting rod 7; first rocker 6 and second rocker 4 are the double-rod structure that respectively sets up a pole in 2 both sides of dipper, and first rocker 6 and second rocker 4 are arranged around on the dipper, and the lower extreme of first rocker 6 and second rocker 4 rotates through the round pin axle and connects on the dipper, and the upper end that first rocker 6 is located the two poles of dipper both sides is through round pin axle fixed connection, and the upper end that second rocker 4 is located the two poles of dipper both sides also is through round pin axle fixed connection. The front end and the rear end of the second connecting rod 7 are respectively connected with the first rocker 6 and a pin shaft at the upper end of the second rocker 4 in a rotating mode, the front end of the first connecting rod 5 is connected with the bucket 1 in a rotating mode, the rear end of the first connecting rod 5 is connected with a pin shaft at the upper end of the second rocker 4 in a rotating mode, a pin shaft at the upper end of the first rocker 6 is connected with the front end of the bucket oil cylinder 3 in a rotating mode, the first rocker 6, the second rocker 4, the second connecting rod 7 and the bucket rod 2 form a quadrilateral connecting rod mechanism, and the bucket oil cylinder stretches out and draws back to push the bucket to rotate around a hinge point of.
In order to realize the protection to the scraper bowl hydro-cylinder in this embodiment, still include hydro-cylinder protection mechanism, hydro-cylinder protection mechanism includes pendulum rod 8, the scraper bowl hydro-cylinder guard plate 9 of two pole structures, and two parallel settings of pole of pendulum rod 8 are connected through round pin axle and 2 rotations of dipper at both sides and the lower extreme at the rear portion of dipper, as shown in fig. 3, the inlaying of pendulum rod 8 has bush 82, makes it realize selling epaxial the rotation. The upper ends of two rods of the swing rod 8 are connected with each other through a pin shaft and are rotationally connected with the rear end of a bucket cylinder protection plate 9 through the pin shaft, the bucket cylinder protection plate 9 is positioned above the bucket cylinder, and the front end of the bucket cylinder protection plate is rotationally connected with the rear end of the bucket link mechanism.
The bucket cylinder protection plate 9 is composed of an anti-collision beam 91 arranged in a front-back direction and a baffle plate 93 fixed on the anti-collision beam. The anti-collision beam 91 is mainly used for resisting the impact of large materials on the bucket cylinder 3, and the baffle 93 is used for separating the dirt and damage of small materials on the piston rod of the bucket cylinder. The front end of the impact beam 91 is provided with a leg 92 extending downwards, and the tail end of the leg 92 is rotatably connected with a pin shaft at the upper end of the first rocker 6. Landing leg 92 realizes that bucket cylinder guard plate 9 rotates with the upper end of first rocker 6 to be connected, also improves simultaneously crashproof roof beam 91 and baffle 93 and bucket cylinder 3's distance, avoids bucket cylinder 3 at the flexible in-process rather than taking place the installation of mutual interference and convenient guard plate.
In this embodiment, the bucket cylinder protection plate 9, the swing rod 8, the first rocker 6 and the bucket rod 2 form a quadrilateral linkage, and the bucket cylinder protection plate moves back and forth along with the extension and retraction of the bucket cylinder to protect the bucket cylinder, so that the service life of the bucket cylinder is prolonged.
The above technical solution can be used in the embodiment where the length of the bucket rod is longer than that of the bucket cylinder, and if the length of the bucket rod is shorter than that of the bucket cylinder, the second swing link 4 and the second link 7 can be eliminated in the above technical solution, that is, the bucket link mechanism includes the first rocker 6 and the first link 5; the lower extreme of first rocker 6 rotates through the round pin axle to be connected on dipper 2, and the front end of first connecting rod 5 rotates with scraper bowl 1 to be connected, and the rear end of first connecting rod 5 rotates with the upper end of first rocker 6 to be connected, and the upper end of first rocker 6 rotates with the front end of scraper bowl hydro-cylinder 3 and scraper bowl hydro-cylinder guard plate 9 simultaneously and is connected.
Claims (5)
1. A bucket oil cylinder protection mechanism of an excavator comprises a bucket rod, a bucket connected to the front end of the bucket rod, a bucket connecting rod mechanism arranged at the front part of the bucket rod, a bucket oil cylinder arranged at the front end of the bucket rod and connected with the bucket, and a bucket oil cylinder with two ends corresponding to the rear part of the bucket connecting rod mechanism and the rear part of the bucket rod and hinged with the rear part of the bucket rod, and is characterized by further comprising an oil cylinder protection mechanism, wherein the oil cylinder protection mechanism comprises two rods of a double-rod structure, a bucket oil cylinder protection plate, two rods of the rods are arranged at two sides of the rear part of the bucket rod in parallel, the lower end of the rod is rotationally connected with the bucket rod, the upper ends of the two rods of the rod are mutually connected through a pin shaft,
the rear end of the bucket connecting rod mechanism is provided with a first rocker (6) of a double-rod structure, wherein two sides of the bucket rod are respectively provided with a rod;
the bucket cylinder protection plate is positioned above the bucket cylinder, the front end of the bucket cylinder protection plate is rotatably connected with the upper end of the first rocker (6) through a pin shaft, and the lower end of the first rocker (6) is rotatably connected to the bucket rod through a pin shaft;
the bucket cylinder protection plate (9), the swing rod (8), the first rocker (6) and the bucket rod (2) form a quadrilateral connecting rod mechanism.
2. The excavator bucket cylinder guard mechanism of claim 1 wherein the bucket linkage further comprises a second rocker, a first link, a second link; the second rocker is for respectively setting up the double-rod structure of a pole in dipper both sides, first rocker and second rocker are arranged around on the dipper, the lower extreme of second rocker rotates through the round pin axle and connects on the dipper, both ends are connected through round pin axle and first rocker, the upper end of second rocker rotates respectively around the second connecting rod, the front end of first connecting rod rotates with the scraper bowl to be connected, the rear end of first connecting rod rotates with the upper end of second rocker to be connected, the upper end of first rocker rotates with the front end and the scraper bowl hydro-cylinder guard plate of scraper bowl hydro-cylinder simultaneously and is connected.
3. The excavator bucket cylinder guard mechanism of claim 1 wherein the bucket linkage includes a first rocker, a first link; the first rocker is a double-rod structure with a rod arranged on each of two sides of the bucket rod, the lower end of the first rocker is rotatably connected to the bucket rod through a pin shaft, the front end of the first connecting rod is rotatably connected with the bucket, the rear end of the first connecting rod is rotatably connected with the upper end of the first rocker, and the upper end of the first rocker is rotatably connected with the front end of the bucket oil cylinder and the bucket oil cylinder protection plate.
4. The excavator bucket cylinder guard mechanism of claim 2 or 3 wherein the bucket cylinder guard is comprised of an impact beam disposed in a front-to-back orientation and a guard fixed to the impact beam.
5. The excavator bucket cylinder guard mechanism of claim 4 wherein the front end of the impact beam has a downwardly extending leg, the distal end of the leg being pivotally connected to the upper end of the first rocker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203589.3A CN108487364B (en) | 2018-03-13 | 2018-03-13 | Oil cylinder protection mechanism of excavator bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203589.3A CN108487364B (en) | 2018-03-13 | 2018-03-13 | Oil cylinder protection mechanism of excavator bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108487364A CN108487364A (en) | 2018-09-04 |
| CN108487364B true CN108487364B (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810203589.3A Active CN108487364B (en) | 2018-03-13 | 2018-03-13 | Oil cylinder protection mechanism of excavator bucket |
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| CN (1) | CN108487364B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945802A (en) * | 2020-08-25 | 2020-11-17 | 中国铁建重工集团股份有限公司 | Shovel loader working device |
| CN114875997A (en) * | 2022-04-13 | 2022-08-09 | 中联重科土方机械有限公司 | Control method and control device for excavator, controller and excavator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3731734A1 (en) * | 1987-09-21 | 1989-04-06 | Fritz Hildebrandt | Machine with hydraulic cylinder |
| DE4010225A1 (en) * | 1990-03-30 | 1991-10-02 | Porsche Ag | PROTECTIVE DEVICE FOR A PISTON ROD OF A HYDRAULIC CYLINDER |
| CN201050082Y (en) * | 2007-06-15 | 2008-04-23 | 龙工(上海)机械制造有限公司 | Protecting device for oil cylinder |
| CN201187066Y (en) * | 2008-04-30 | 2009-01-28 | 王相军 | Forklift truck turning bucket oil cylinder protector |
| CN204826021U (en) * | 2015-06-17 | 2015-12-02 | 内蒙古包钢钢联股份有限公司 | Bull -dozer tilting cylinder safety cover |
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2018
- 2018-03-13 CN CN201810203589.3A patent/CN108487364B/en active Active
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| Publication number | Publication date |
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| CN108487364A (en) | 2018-09-04 |
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