CN110616756B - Excavator telescopic boom and excavator - Google Patents
Excavator telescopic boom and excavator Download PDFInfo
- Publication number
- CN110616756B CN110616756B CN201910916249.XA CN201910916249A CN110616756B CN 110616756 B CN110616756 B CN 110616756B CN 201910916249 A CN201910916249 A CN 201910916249A CN 110616756 B CN110616756 B CN 110616756B
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- China
- Prior art keywords
- excavator
- shaft sleeve
- rotating shaft
- bucket
- telescopic arm
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims description 50
- 230000004888 barrier function Effects 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 239000000428 dust Substances 0.000 abstract description 12
- 238000005299 abrasion Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E02F3/36—Component parts
- E02F3/369—Devices to connect parts of a boom or an 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
- E02F3/36—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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 provides an excavator telescopic arm and an excavator, and relates to the field of construction machinery. The telescopic arm of the excavator comprises a bucket rod, a bucket and a closed cover, wherein one end of the bucket rod is rotationally connected with the bucket through a shaft sleeve, a rotating shaft and an ear plate, and the rotating shaft is sleeved in the shaft sleeve and is arranged on the ear plate. The airtight cover is arranged on one side of the end part of the lug plate, which is close to the rotating shaft, and an airtight space can be formed between the airtight cover and the lug plate so as to close a gap between the end part of the rotating shaft and the lug plate. The excavator is provided with the excavator telescopic arm. According to the invention, the technical problem that impurities are easy to enter between the shaft sleeve and the shaft sleeve along with water flow passing through a gap between the lug plate and the shaft sleeve and a dust ring along the axial direction of the shaft sleeve when the excavator in the prior art works underwater, so that the shaft sleeve and the shaft sleeve are still subjected to larger abrasion is solved.
Description
Technical Field
The invention relates to the technical field of construction machinery, in particular to an excavator telescopic arm and an excavator.
Background
The telescopic arm of the excavator comprises a bucket and a bucket rod for supporting the bucket, and the bucket rod is hinged with the bucket through a pin shaft. The specific hinging mode between the bucket rod and the bucket is as follows: two lugs are welded on the bucket, and perforations are arranged on the lugs. The shaft sleeve is arranged on the bucket rod, the shaft sleeve of the bucket rod is arranged between the two lug plates, and the shaft sleeve is communicated with the through holes in the lug plates in sequence. And then a pin shaft is arranged between the shaft sleeve and the through hole on the lug plate, so that the pin shaft can rotate in the shaft sleeve.
The excavator is often in the abominable operational environment that dust flies upward, can aggravate wearing and tearing between round pin axle and the axle sleeve after impurity gets into between round pin axle and the axle sleeve, and then can reduce the life of the flexible arm of excavator, therefore current flexible arm of excavator still includes the dust ring, and the dust ring setting is in the tip position department of axle sleeve, and is located between round pin axle and the axle sleeve.
However, when the excavator works underwater, such as dredging underwater and dredging underwater, the telescopic arm of the excavator can stir impurities such as water, sediment and the like, and at the moment, the impurities such as the sediment and the like easily pass through a gap between the lug plate and the pin shaft along the axial direction of the pin shaft along with water flow, and enter between the shaft sleeve and the pin shaft after passing through the dust ring. Therefore, the pin shaft and the shaft sleeve in the telescopic arm of the existing excavator are still easy to enter impurities to be worn greatly, and the service life of the telescopic arm is still reduced.
Disclosure of Invention
The invention aims to provide an excavator telescopic arm and an excavator, which are used for solving the technical problems that impurities are easy to pass through a dust ring and enter between a shaft sleeve on a bucket rod and a pin shaft along the axial direction of the pin shaft between the bucket and the bucket rod after passing through a gap between a bucket lug plate and the pin shaft along the axial direction of the pin shaft in the bucket rod when the excavator telescopic arm of the excavator works underwater in the prior art, so that the pin shaft and the shaft sleeve are still subjected to larger abrasion, and the service life of the excavator telescopic arm is reduced.
The telescopic arm of the excavator provided by the invention comprises a bucket rod, a bucket and a closed cover;
one end of the bucket rod is rotationally connected with the bucket through a shaft sleeve, a rotating shaft and an ear plate, and the rotating shaft is sleeved in the shaft sleeve and is arranged on the ear plate;
the airtight cover is arranged on one side of the end part of the lug plate, which is close to the rotating shaft, and an airtight space can be formed between the airtight cover and the lug plate so as to close a gap between the end part of the rotating shaft and the lug plate.
Further, the excavator telescoping arm further comprises an annular first seal;
The shaft sleeve is arranged at one end of the bucket rod, which is rotationally connected with the bucket, the bucket is provided with two lug plates, and the shaft sleeve is positioned between the two lug plates;
The first sealing piece is sleeved on the rotating shaft and is abutted between one side, close to the lug plate, of the bucket rod and the lug plate.
Further, the closed cover comprises a supporting cover and a baffle plate;
The supporting cover is a hollow cylinder with openings at two ends, the supporting cover is sleeved on the outer side of the rotating shaft, and one end of the supporting cover is welded on one side of the lug plate, which is far away from the shaft sleeve;
The other end of the supporting cover is detachably connected with a baffle plate, and the baffle plate is used for closing an opening at the other end of the supporting cover.
Further, the enclosure further comprises an annular second seal;
An annular first groove is formed in one end, close to the baffle, of the supporting cover, the second sealing piece is arranged in the first groove, and the second sealing piece is abutted between one side, close to the rotating shaft, of the baffle and the first groove.
Further, one end of the supporting cover, which is close to the baffle, is connected with the baffle through bolts, and the second sealing piece is positioned between the bolt and the hollow position of the supporting cover.
Further, the excavator telescopic arm further comprises an annular third sealing element;
The hollow position of the end part of the shaft sleeve is provided with an annular second groove, the third sealing element is arranged in the second groove, and the third sealing element is abutted between the second groove and the rotating shaft.
Further, an annular third groove is formed in one side, close to the shaft sleeve, of the lug plate, and the third sealing element is installed in the third groove.
Further, the telescopic arm of the excavator further comprises a hollow cylindrical first fixing piece, the first fixing piece is sleeved on the rotating shaft, and the first fixing piece is fixed on one side, close to the shaft sleeve, of the ear plate;
The end part of the shaft sleeve is abutted with the first fixing piece; the first sealing piece is sleeved on the outer side of the first fixing piece.
Further, the telescopic arm of the excavator further comprises a hollow cylindrical second fixing piece, the second fixing piece is sleeved on the rotating shaft, and the second fixing piece is fixed on one side, away from the shaft sleeve, of the ear plate;
the supporting cover is sleeved on the outer side of the second fixing piece.
The excavator provided by the invention is provided with the excavator telescopic arm according to any one of the technical schemes.
The telescopic arm of the excavator and the excavator provided by the invention have the following beneficial effects:
The invention provides an excavator telescopic arm which comprises a bucket rod, a bucket and a closed cover. When the telescopic boom of the excavator works underwater, such as dredging underwater and dredging underwater, the telescopic boom of the excavator can stir impurities such as water, sediment and the like, and the impurities such as the sediment and the like can flow along all directions along with water flow. Because the sealed cover is arranged in the telescopic arm of the excavator, the sealed cover is arranged on one side, close to the end part of the rotating shaft, of the lug plate, a sealed space can be formed between the sealed cover and the lug plate, and the sealed space can cover a gap between the end part of the rotating shaft and the lug plate, so that water flow carrying impurities can be prevented from passing through the gap between the lug plate and the rotating shaft along the axial direction of the rotating shaft from the end part of the rotating shaft, and water flow carrying impurities can be prevented from entering the gap between the shaft sleeve and the rotating shaft after passing through the dust ring.
Compared with the prior art, the telescopic arm of the excavator provided by the invention can prevent water flow carrying impurities from entering into the gap between the perforated part of the lug plate and the rotating shaft along the axial direction of the rotating shaft by utilizing the closed cover, so that the impurity amount entering between the shaft sleeve and the rotating shaft after passing through the dust ring can be reduced, the abrasion between the rotating shaft in the telescopic arm of the excavator and the shaft sleeve is reduced, and the service life of the telescopic arm of the excavator is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of an excavator telescoping arm according to a first embodiment of the present invention.
Icon: 1-a bucket rod; 10-shaft sleeve; 100-a second groove; 2-ear plates; 3-rotating shaft; 4-a closed cover; 40-supporting cover; 400-first grooves; 41-baffle; 42-a second seal; 5-a first seal; 6-a third seal; 7-a first fixing member; 8-second fixing piece.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 1, the telescopic arm of the excavator provided in this embodiment includes a bucket rod 1, a bucket and a closed cover 4, wherein one end of the bucket rod 1 is rotatably connected with the bucket through a shaft sleeve 10, a rotating shaft 3 and an ear plate 2, and the rotating shaft 3 is sleeved in the shaft sleeve 10 and is mounted on the ear plate 2. The sealing cover 4 is mounted on one side of the ear plate 2 near the end of the rotating shaft 3, and a sealed space can be formed between the sealing cover 4 and the ear plate 2 to seal a gap between the end of the rotating shaft 3 and the ear plate 2.
When the telescopic boom of the excavator works underwater, such as dredging underwater and dredging underwater, the telescopic boom of the excavator can stir impurities such as water, sediment and the like, and the impurities such as the sediment and the like can flow along all directions along with water flow. Because be provided with airtight cover 4 in the flexible arm of excavator that this embodiment provided, airtight cover 4 installs on the one side of the tip that is close to pivot 3 on otic placode 2, can form airtight space between airtight cover 4 and the otic placode 2, and this airtight space can cover the gap between tip and the otic placode 2 of pivot 3, and then can block to carry impurity-carrying rivers from the tip of pivot 3 along the axial of pivot 3 and pass the gap between otic placode 2 and pivot 3, can prevent to carry impurity-carrying rivers to enter into after passing the dust ring between axle sleeve 10 and the pivot 3.
Compared with the prior art, the telescopic boom of the excavator provided by the embodiment can prevent water flow carrying impurities from entering into the gap between the perforated part of the lug plate 2 and the rotating shaft 3 along the axial direction of the rotating shaft 3 by utilizing the closed cover 4, so that the impurity amount entering between the shaft sleeve 10 and the rotating shaft 3 after passing through the dust ring can be reduced, the abrasion between the rotating shaft 3 and the shaft sleeve 10 in the telescopic boom of the excavator is reduced, and the service life of the telescopic boom of the excavator is prolonged.
Therefore, when the telescopic arm of the excavator in the prior art works underwater, impurities are easy to pass through the gap between the bucket lug plate 2 and the pin shaft along the axial direction of the pin shaft between the bucket and the bucket rod 1, continuously pass through the dust ring and enter between the shaft sleeve 10 and the pin shaft on the bucket rod 1, so that the pin shaft and the shaft sleeve 10 are still subjected to larger abrasion, and the service life of the telescopic arm of the excavator is reduced.
The rotating shaft 3 may be a pin shaft.
As shown in fig. 1, the telescopic arm of the excavator provided in this embodiment further includes an annular first sealing member 5, a shaft sleeve 10 is disposed on one end of the arm 1 rotationally connected to the bucket, two lugs 2 are disposed on the bucket, and the shaft sleeve 10 is located between the two lugs 2. The first sealing piece 5 is sleeved on the rotating shaft 3 and is abutted between one side, close to the lug plate 2, of the bucket rod 1 and the lug plate 2.
The first seal 5 may be a rubber ring or a silicone ring.
The first sealing member 5 can prevent the water flow carrying impurities from entering the gap between the end of the rotating shaft 3 and the ear plate 2 after passing through the gap between the side edge of the bucket rod 1 and the ear plate 2, and then can prevent the water flow carrying impurities from entering the gap between the rotating shaft 3 and the shaft sleeve 10.
It can be seen that the first sealing member 5 can further prevent the water flow from sending impurities between the rotating shaft 3 and the shaft sleeve 10, reduce the abrasion between the rotating shaft 3 and the shaft sleeve 10, and further prolong the service life of the telescopic arm of the excavator.
The first sealing element 5 and the airtight cover 4 are matched for use, so that the impurity amount entering between the rotating shaft 3 and the shaft sleeve 10 along with water flow can be reduced, the protection effect can be enhanced, and the damage to the telescopic arm of the excavator due to impurities is reduced.
In order to enhance the sealing effect of the first seal 5, the present embodiment preferably has the first seal 5 interference-fit between the ear plate 2 and the side of the arm 1 near the ear plate 2.
As shown in fig. 1, the airtight cover 4 provided in this embodiment includes a supporting cover 40 and a baffle 41, where the supporting cover 40 is a hollow cylinder with openings at two ends, the supporting cover 40 is sleeved on the outer side of the rotating shaft 3, and one end of the supporting cover 40 is welded on the side of the ear plate 2 facing away from the shaft sleeve 10. The other end of the support cover 40 is detachably connected with a baffle 41, and the baffle 41 is used for closing an opening of the other end of the support cover 40.
In practical applications, the enclosure 4 may be a hollow cylinder with only one opening formed integrally, and in this case, the side of the enclosure 4 with the opening may be welded to the ear plate 2. The integrally formed sealing cover 4 and the welded connection mode can achieve the effect of sealing the end part of the rotating shaft 3, can block water flow to the greatest extent, and prevent water flow from carrying impurities into a gap between the rotating shaft 3 and the ear plate 2.
However, the integrally formed sealing cover 4 and the welded connection manner can raise the difficulty of assembling the telescopic arm of the excavator and the difficulty of replacing the bucket, so that the sealing cover 4 preferably comprises the supporting cover 40 and the baffle 41, and the baffle 41 is detachably connected to the supporting cover 40.
The material of the supporting cover 40 and the material of the baffle 41 are not limited, and the material of the supporting cover 40 and the material of the baffle 41 may be metal or alloy, and the supporting cover 40 is welded on the ear plate 2. To facilitate removal of the shaft 3 from between the ear plates 2, the baffle 41 is removably attached to the support housing 40. To prevent the water flow from carrying impurities into the support cap 40 and into the gap between the shaft 3 and the ear plate 2, the baffle 41 abuts on the end of the support cap 40 remote from the ear plate 2.
As shown in fig. 1, the enclosure 4 further comprises an annular second seal 42. An annular first groove 400 is provided on one end of the support cover 40 near the baffle 41, the second seal member 42 is installed in the first groove 400, and the second seal member 42 abuts between the side of the baffle 41 near the rotation shaft 3 and the first groove 400.
Since the supporting cover 40 and the baffle 41 are detachably connected, a gap into which water can enter is easily formed between the supporting cover 40 and the baffle 41. The second sealing member 42 abutting against the side of the baffle 41 near the rotating shaft 3 and the first groove 400 can block the water flow, so that the water flow is prevented from carrying impurities to pass through the gap between the supporting cover 40 and the baffle 41 and then enter the gap between the rotating shaft 3 and the ear plate 2.
The second sealing element 42 can also be a rubber ring or a silica gel ring, and the second sealing element 42 can also prevent water flow from sending impurities between the rotating shaft 3 and the shaft sleeve 10, so that abrasion between the rotating shaft 3 and the shaft sleeve 10 is reduced, and the service life of the telescopic arm of the excavator is further prolonged.
In order to enhance the sealing effect of the second seal member 42, the present embodiment preferably has the second seal member 42 interference-fitted between the side of the baffle 41 near the rotation shaft 3 and the first groove 400.
In practical applications, the supporting cover 40 and the baffle 41 may be detachably connected together by bolts or rivets. In order to improve stability of the telescopic arm of the excavator, the support cover 40 and the baffle 41 of the present embodiment are preferably connected by bolts.
In the present embodiment, as shown in fig. 1, the end of the support cover 40 near the baffle 41 is connected to the baffle 41 by bolts, and the second seal member 42 is located at the hollow position of the support cover 40 and between the bolts.
The second sealing member 42 is disposed between the bolts and the hollow position of the supporting cover 40, so that not only can water be effectively prevented from entering the supporting cover 40 through the gap between the supporting cover 40 and the baffle 41, but also the gap between the sealing bolt and the supporting cover 40 and the gap between the sealing bolt and the baffle 41 do not need to be considered.
Therefore, the second seal member 42 can simplify the structure of the hermetic cover 4 while ensuring the sealability of the hermetic cover 4.
As shown in fig. 1, the telescopic boom of the excavator provided in this embodiment further includes a third seal 6 having a ring shape. An annular second groove 100 is provided at a hollow position of an end portion of the sleeve 10, the third seal 6 is installed in the second groove 100, and the third seal 6 abuts between the second groove 100 and the rotating shaft 3.
The third sealing element 6 may also be a rubber ring or a silicone ring.
The third sealing member 6 can prevent the water flow carrying impurities from passing through the gap between the end of the sleeve 10 and the side wall of the shaft 3, and thus can prevent the water flow carrying impurities from entering between the shaft 3 and the sleeve 10.
It can be seen that the third sealing member 6 can further prevent the water flow from sending impurities between the rotating shaft 3 and the shaft sleeve 10, reduce the abrasion between the rotating shaft 3 and the shaft sleeve 10, and further prolong the service life of the telescopic arm of the excavator.
The first sealing element 5, the second sealing element 42, the third sealing element 6 and the airtight cover 4 are matched for use, so that the impurity amount entering between the rotating shaft 3 and the shaft sleeve 10 along with water flow can be greatly reduced, a better protection effect is achieved, and damage to the telescopic arm of the excavator due to impurities is reduced.
In order to enhance the sealing effect of the third seal 6, the present embodiment preferably has the third seal 6 interference-fitted between the second groove 100 and the rotation shaft 3.
Further, the ear plate 2 is provided with a third annular groove on the side close to the sleeve 10, in which third groove the third seal 6 is mounted.
The third groove and the second groove 100 are matched to be used, so that the third sealing element 6 can be stably limited between the end part of the shaft sleeve 10, the lug plate 2 and the side wall of the rotating shaft 3, and the third sealing element 6 can have a good sealing effect.
Further, also for the sealing effect of the third seal 6, the present embodiment preferably has an interference fit of the third seal 6 with the third groove.
As shown in fig. 1, the telescopic arm of the excavator provided in this embodiment further includes a first hollow cylindrical fixing member 7, where the first fixing member 7 is sleeved on the rotating shaft 3, and the first fixing member 7 is fixed on one side of the ear plate 2 near the shaft sleeve 10.
The end of the sleeve 10 abuts against the first fixing member 7, and the first sealing member 5 is sleeved on the outer side of the first fixing member 7.
In practical applications, the material of the first fixing member 7 may be metal or alloy. The first fixing member 7 may be welded to the side of the ear plate 2 near the sleeve 10, and the first fixing member 7 may function to reinforce the ear plate 2.
The first fixing member 7 may be a member provided on the ear plate 2 in the existing excavator. The telescopic boom of the excavator provided in this embodiment is provided with the first sealing member 5 according to the positional relationship among the lug plate 2, the rotating shaft 3, the shaft sleeve 10, the first fixing member 7 and the bucket rod 1 in the telescopic boom of the existing excavator, and the first sealing member 5 can be sleeved on the first fixing member 7 and can seal the gap between the side edge of the bucket rod 1 and the lug plate 2.
The first sealing piece 5 can be stabilized in position by the cooperation of the bucket rod 1 and the lug plate 2 on the first fixing piece 7, and the stability of the telescopic arm of the excavator is improved.
As shown in fig. 1, the telescopic arm of the excavator provided in this embodiment may further include a hollow cylindrical second fixing member 8, where the second fixing member 8 is sleeved on the rotating shaft 3, and the second fixing member 8 is fixed on a side of the ear plate 2 facing away from the shaft sleeve 10. The supporting cover 40 is sleeved outside the second fixing piece 8.
In practical applications, the material of the second fixing member 8 may be metal or alloy, and the second fixing member 8 may be a member provided on the ear plate 2 in the conventional excavator.
The second fixing member 8 is welded to the side of the ear plate 2 close to the shaft sleeve 10, and the second fixing member 8 can also play a role in reinforcing the ear plate 2.
Embodiment two:
the excavator provided by the embodiment is provided with the excavator telescopic arm in the first embodiment, so that the excavator provided by the embodiment can solve the same technical problem as the excavator telescopic arm in the first embodiment, and achieves the same beneficial effects.
The excavator provided by this embodiment has also alleviated the excavator telescopic arm of excavator that exists among the prior art and has operated under water, and impurity is easy to pass behind the clearance between scraper bowl otic placode 2 and the round pin axle along the axial of the round pin axle between scraper bowl and the dipper 1 along rivers, and continue to pass the dust ring and get into between axle sleeve 10 and the round pin axle on the dipper 1, leads to still receiving great wearing and tearing between round pin axle and the axle sleeve 10, reduces the technical problem of excavator telescopic arm's life.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. An excavator telescopic arm is characterized by comprising a bucket rod (1), a bucket, a closed cover (4), a hollow cylindrical first fixing piece (7), an annular first sealing piece (5) and an annular third sealing piece (6);
One end of the bucket rod (1) is rotationally connected with the bucket through a shaft sleeve (10), a rotating shaft (3) and an ear plate (2), the shaft sleeve (10) is arranged at one end of the bucket rod (1) which is rotationally connected with the bucket, two ear plates (2) are arranged on the bucket, the shaft sleeve (10) is positioned between the two ear plates (2), the rotating shaft (3) is sleeved in the shaft sleeve (10) and is arranged on the ear plate (2), a first fixing piece (7) is sleeved on the rotating shaft (3), the first fixing piece (7) is fixed at one side, close to the shaft sleeve (10), of the ear plate (2), the end part of the shaft sleeve (10) is abutted with the first fixing piece (7), and the first sealing piece (5) is sleeved at the outer side of the first fixing piece (7) and is abutted between one side, close to the ear plate (2), of the bucket rod (1);
the closed cover (4) is arranged on one side of the ear plate (2) close to the end part of the rotating shaft (3), and a closed space can be formed between the closed cover (4) and the ear plate (2) so as to close a gap between the end part of the rotating shaft (3) and the ear plate (2);
an annular second groove (100) is formed in the hollow position of the end portion of the shaft sleeve (10), the third sealing piece (6) is installed in the second groove (100), and the third sealing piece (6) is abutted between the second groove (100) and the rotating shaft (3).
2. The telescopic arm of an excavator according to claim 1, wherein the containment hood (4) comprises a support hood (40), a baffle (41) and an annular second seal (42);
the supporting cover (40) is a hollow cylinder with openings at two ends, the supporting cover (40) is sleeved on the outer side of the rotating shaft (3), and one end of the supporting cover (40) is welded on one side of the lug plate (2) away from the shaft sleeve (10);
The other end of the supporting cover (40) is detachably connected with the baffle plate (41), and the baffle plate (41) is used for closing an opening at the other end of the supporting cover (40);
An annular first groove (400) is formed in one end, close to the baffle (41), of the supporting cover (40), the second sealing piece (42) is installed in the first groove (400), and the second sealing piece (42) is abutted between one side, close to the rotating shaft (3), of the baffle (41) and the first groove (400).
3. The telescopic arm of an excavator according to claim 2, wherein the end of the supporting hood (40) adjacent to the barrier (41) is connected to the barrier (41) by means of a bolt, and the second seal (42) is located between the bolt and the hollow position of the supporting hood (40).
4. The telescopic arm of an excavator according to claim 1, characterized in that a third groove of annular shape is provided on the side of the ear plate (2) close to the shaft sleeve (10), in which third groove the third seal (6) is mounted.
5. A telescopic arm for an excavator according to claim 3, further comprising a second hollow cylindrical securing element (8), said second securing element (8) being sleeved on said spindle (3) and said second securing element (8) being secured to the side of said ear plate (2) facing away from said sleeve (10);
The supporting cover (40) is sleeved on the outer side of the second fixing piece (8).
6. An excavator, wherein the excavator is provided with the excavator telescopic arm as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916249.XA CN110616756B (en) | 2019-09-25 | 2019-09-25 | Excavator telescopic boom and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916249.XA CN110616756B (en) | 2019-09-25 | 2019-09-25 | Excavator telescopic boom and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110616756A CN110616756A (en) | 2019-12-27 |
| CN110616756B true CN110616756B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910916249.XA Active CN110616756B (en) | 2019-09-25 | 2019-09-25 | Excavator telescopic boom and excavator |
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| CN (1) | CN110616756B (en) |
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| JP2001330024A (en) * | 2000-05-23 | 2001-11-30 | Hitachi Constr Mach Co Ltd | Bearing device |
| CN102943495A (en) * | 2012-11-16 | 2013-02-27 | 柳州柳工挖掘机有限公司 | Hinge mechanism |
| KR20130092010A (en) * | 2012-02-09 | 2013-08-20 | 김성회 | Linkage structure for bucket and arm of hydraulic excavator |
| CN209294200U (en) * | 2018-11-20 | 2019-08-23 | 河南中烟工业有限责任公司 | A kind of shaker arm connection structure |
| CN211037091U (en) * | 2019-09-25 | 2020-07-17 | 上海三一重机股份有限公司 | Excavator telescopic arm and excavator |
-
2019
- 2019-09-25 CN CN201910916249.XA patent/CN110616756B/en active Active
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| JP2001330024A (en) * | 2000-05-23 | 2001-11-30 | Hitachi Constr Mach Co Ltd | Bearing device |
| KR20130092010A (en) * | 2012-02-09 | 2013-08-20 | 김성회 | Linkage structure for bucket and arm of hydraulic excavator |
| CN102943495A (en) * | 2012-11-16 | 2013-02-27 | 柳州柳工挖掘机有限公司 | Hinge mechanism |
| CN209294200U (en) * | 2018-11-20 | 2019-08-23 | 河南中烟工业有限责任公司 | A kind of shaker arm connection structure |
| CN211037091U (en) * | 2019-09-25 | 2020-07-17 | 上海三一重机股份有限公司 | Excavator telescopic arm and excavator |
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| CN110616756A (en) | 2019-12-27 |
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