CN210770234U - Sealing assembly, excavator mechanical arm and excavator - Google Patents
Sealing assembly, excavator mechanical arm and excavator Download PDFInfo
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- CN210770234U CN210770234U CN201921918059.3U CN201921918059U CN210770234U CN 210770234 U CN210770234 U CN 210770234U CN 201921918059 U CN201921918059 U CN 201921918059U CN 210770234 U CN210770234 U CN 210770234U
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Abstract
The utility model provides a seal assembly, excavator arm and excavator relates to engineering machine tool's technical field. The sealing assembly comprises a sealing strip and an annular hoop, wherein the annular hoop is provided with a notch, the two ends of the notch of the annular hoop are connected through a connecting piece, and at least one end of the two ends of the notch of the annular hoop is detachably connected with the connecting piece. The sealing strip is attached to the inner side of the annular hoop, and the annular hoop is used for fixing the sealing strip into a closed annular structure. The excavator arm includes a dipper, and the above-described seal assembly. The excavator comprises the excavator mechanical arm. The utility model discloses two knecks that have the current sealing washer of open structure who exists have been alleviated and have been fixed with bolt and nut respectively among the prior art, and in the use, the sealing washer is pulled to the bolt and nut easy-to-draw, and then leads to the position department that is fixed with bolt and nut on the sealing washer to produce the fracture, makes the damaged technical problem of sealing washer.
Description
Technical Field
The utility model belongs to the technical field of the engineering machine tool technique and specifically relates to a seal assembly, excavator arm and excavator are related to.
Background
The sealing ring is widely applied to the field of engineering machinery, such as a mechanical arm of an excavator. The arm of excavator includes scraper bowl, dipper and round pin axle, and the round pin axle is worn to establish on the tip of dipper, and exposes outside the dipper at the both ends of round pin axle, and the both ends of round pin axle rotate to be connected on two otic placodes on the scraper bowl. The position that the round pin axle is close to the tip has cup jointed the sealing washer, and the sealing washer butt is between dipper and scraper bowl for prevent that the foreign particles from getting into between dipper and the round pin axle.
The sealing ring belongs to a quick-wear part, and the existing sealing ring is of an integrally formed closed-loop structure, and is not easy to maintain and replace after being damaged in the using process. Taking the sealing ring at the joint of the bucket rod and the bucket of the excavator as an example, if the sealing ring at the joint needs to be replaced, the bucket needs to be detached by using a special tool firstly, a new sealing ring sleeve is sleeved on the pin shaft, and finally, the bucket needs to be installed on the bucket rod and abuts against the sealing ring between the bucket and the bucket rod, so that the replacement process is very troublesome.
In order to facilitate replacement of a sealing ring between two components, an existing sealing ring is of an open structure, and a bolt and a nut are respectively fixed at two interfaces of the sealing ring. The opening structure of the sealing ring can be closed and fixed by connecting the bolt and the nut together, and the bolt and the nut are separated, so that the opening of the sealing ring can be opened. However, in order to make the two interfaces of the seal ring tightly abut against each other, the stroke of the nut on the bolt needs to be kept to the maximum, and at this time, the bolt and the nut are likely to pull the position of the seal ring where the bolt and the nut are fixed, and further, the position of the seal ring where the bolt and the nut are fixed is likely to be broken, so that the seal ring is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seal assembly, excavator arm and excavator, two knecks with open structure's the current sealing washer that has that exist are fixed with bolt and nut respectively in order to alleviate among the prior art, in order to make the inseparable butt of two knecks of sealing washer together, need make the stroke of nut on the bolt keep at furthest, the position department that is fixed with bolt and nut that bolt and nut easily made the sealing washer at this moment receives the dragging, and then the position department that is fixed with bolt and nut on easily leading to the sealing washer produces the fracture, make the damaged technical problem of sealing washer.
The utility model provides a sealing component which comprises a sealing strip and an annular hoop;
the annular hoop is provided with a notch, two ends of the notch of the annular hoop are connected through a connecting piece, and at least one end of the two ends of the notch of the annular hoop is detachably connected with the connecting piece;
the sealing strip is attached to the inner side of the annular hoop, and the annular hoop is used for fixing the sealing strip into a closed annular structure.
Furthermore, one end of the connecting piece is detachably connected with one end of the gap of the annular hoop, and the other end of the connecting piece is detachably connected with the other end of the gap of the annular hoop.
Furthermore, two ends of the notch of the annular hoop are respectively provided with a first hook, two ends of the connecting piece are respectively provided with a second hook, and the first hooks and the second hooks are hooked together in a one-to-one correspondence mode.
Furthermore, the annular hoop is made of hard materials.
Further, the annular hoop is any one of a steel wire, a lead wire and a copper wire.
Further, along the extending direction of sealing strip, one side of sealing strip is provided with the recess, and the one side that is provided with the recess of sealing strip is with the laminating of annular hoop, and the annular hoop is installed in the recess.
Furthermore, the connecting piece is an elastic piece, and the elastic piece is in a tensioning state and is used for applying tension to two ends of the gap of the annular hoop.
Further, the elastic member is a coil spring.
The utility model provides an excavator mechanical arm which comprises a bucket rod, a bucket and a sealing component in any one of the technical schemes;
one end of the bucket rod is rotatably connected to the bucket, and a sealing assembly is installed at the rotating connection position between the bucket rod and the bucket.
The utility model provides an excavator includes above-mentioned excavator arm.
The utility model provides a seal assembly, excavator arm and excavator can produce following beneficial effect:
the utility model provides a seal assembly includes that sealing strip and annular hoop, annular hoop have the breach, connect through the connecting piece between the both ends of the breach department of annular hoop, and can dismantle between at least one end and the connecting piece in the both ends of the breach department of annular hoop and be connected. When the sealing assembly is used for sealing a joint between two components, a space for embedding a sealing strip can be reserved between the two components. After the sealing strip is embedded in the space, the sealing strip can seal the joint between the two components. Can then laminate the outside at the sealing strip with the annular hoop to link together through the connecting piece between the breach department both ends of annular hoop, link together the back through the connecting piece between the both ends of annular hoop, the annular hoop can be so that the both ends butt of sealing strip and fix together, and finally can regard the sealing washer to use as sealing washer this moment for the fixed confined annular structure of sealing strip. When the sealing member is damaged, because the both ends of annular hoop link together through the connecting piece, and can dismantle between at least one end in the both ends of breach department of annular hoop and the connecting piece and be connected, therefore follow the connecting piece with the annular hoop between the separation can take off the annular hoop from the sealing strip. Then can take out the sealing strip from between above-mentioned two parts, in the space between two parts with new sealing strip embedding again, the laminating of annular hoop in the sealing strip outside is repeated to the process of linking together through the connecting piece between the annular hoop both ends can be fixed the sealing strip between two parts, makes new sealing strip continue to play sealed effect.
Compared with the prior art, the sealing strip in the sealing assembly provided by the embodiment can be encircled to be annular under the pressure action of the annular hoop, and can be used as a sealing ring. The sealing strip fixed on the position to be sealed is pressed by the annular hoop at each position, so that the stress position on the sealing strip is uniform, the sealing strip is not easy to break at a certain position, and the sealing strip is not easy to damage.
The utility model provides an excavator arm includes dipper, scraper bowl and above-mentioned seal assembly. One end of the bucket rod is rotatably connected to the bucket, and a sealing assembly is installed at the rotating connection position between the bucket rod and the bucket. The utility model provides an excavator arm includes above-mentioned seal assembly, therefore has the same beneficial effect with above-mentioned seal assembly.
The utility model provides an excavator includes above-mentioned excavator arm, therefore has the same beneficial effect with above-mentioned excavator arm.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sealing assembly according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a sealing assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sealing strip according to a first embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of the sealing tape of fig. 3.
Icon: 1-sealing strip; 10-a groove; 2-an annular hoop; 20-a first hook; 3-a connector; 30-second hook.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, the sealing assembly provided by the present embodiment includes a sealing strip 1 and an annular hoop 2, the annular hoop 2 has a gap, two ends of the gap of the annular hoop 2 are connected by a connector 3, and at least one of the two ends of the gap of the annular hoop 2 is detachably connected to the connector 3. The sealing strip 1 is attached to the inner side of the annular hoop 2, and the annular hoop 2 is used for fixing the sealing strip 1 into a closed annular structure.
When the sealing assembly is used to seal a joint between two members, a space for embedding the sealing tape 1 may be first left between the two members. After the sealing tape 1 is inserted into the space, the sealing tape 1 can seal the joint between the two members. Can then laminate annular hoop 2 in the outside of sealing strip 1 to link together through connecting piece 3 between the breach department both ends of annular hoop 2, link together the back through connecting piece 3 between the both ends of annular hoop 2, annular hoop 2 can be so that the both ends butt of sealing strip 1 and fix together, and finally can use sealing strip 1 for the sealing washer of confined annular structure this moment sealing strip 1.
When the sealing member is damaged, because the both ends of the annular hoop 2 are connected together through the connecting piece 3, and the detachable connection between at least one end in the both ends of the gap of the annular hoop 2 and the connecting piece 3, therefore the annular hoop 2 can be taken down from the sealing strip 1 by separating the connecting piece 3 from the annular hoop 2. Then can take out sealing strip 1 from between above-mentioned two parts, in the space between two parts with new sealing strip 1 embedding again, the repeated annular hoop 2 laminating is in the sealing strip 1 outside to the process of connecting together through connecting piece 3 between 2 both ends of annular hoop can be fixed sealing strip 1 between two parts, makes new sealing strip 1 continue to play sealed effect.
Compared with the prior art, the sealing strip 1 in the sealing assembly provided by the embodiment can be annularly enclosed under the pressure of the annular hoop 2, and can be used as a sealing ring. The sealing strip 1 fixed on the position to be sealed is pressed by the annular hoop 2 at all positions, so that the stress position on the sealing strip 1 is uniform, the sealing strip is not easy to break at a certain position, and the sealing strip 1 is not easy to damage.
Therefore, the sealing assembly provided by the embodiment alleviates the technical problems that the bolts and the nuts are respectively fixed at two interfaces of the existing sealing ring with an opening structure in the prior art, in order to enable the two interfaces of the sealing ring to be tightly abutted together, the stroke of the nut on the bolt needs to be kept to the maximum, at the moment, the bolts and the nuts easily pull the positions, fixed with the bolts and the nuts, of the sealing ring, and then the positions, fixed with the bolts and the nuts, of the sealing ring are easily broken, and the sealing ring is damaged.
Compared with the sealing strip 1 fixed on the inner side of the annular hoop 2, the sealing strip 1 is attached to the inner side of the annular hoop 2, so that the annular hoop 2 and the sealing strip 1 can be separated more easily. When the damaged sealing strip 1 needs to be replaced, the old sealing strip 1 can be directly taken down from the position to be sealed, a new sealing strip 1 meeting the requirements is cut off from the sealing strip 1 wound into a disc shape according to the diameter required by the sealing at the position to be sealed, and the new sealing strip 1 is fixed at the position to be sealed by utilizing the annular hoop 2 in the original sealing assembly.
It can be seen that, the sealing strip 1 is attached to the inner side of the annular hoop 2, so that the annular hoop 2 can be replaced sparingly, materials are saved, and cost is reduced.
As shown in fig. 1, one end of the connector 3 is detachably connected to one end of the annular hoop 2 at the notch, and the other end of the connector 3 is detachably connected to the other end of the annular hoop 2 at the notch.
In practical application, at least one of the two ends of the connecting piece 3 is detachably connected with the end part of the annular hoop 2 at the gap. In order to facilitate the installation and the disassembly of the annular hoop 2, in the present embodiment, it is preferable that one end of the connecting piece 3 is detachably connected with one end of the annular hoop 2 at the notch, and the other end of the connecting piece 3 is detachably connected with the other end of the annular hoop 2 at the notch.
As shown in fig. 1 and 2, the two ends of the gap of the annular hoop 2 are respectively provided with a first hook 20, the two ends of the connecting piece 3 are respectively provided with a second hook 30, and the first hooks 20 and the second hooks 30 are correspondingly hooked together.
In the embodiment, it is preferable that the two ends of the annular hoop 2 are respectively provided with the first hooks 20, the two ends of the connecting piece 3 are respectively provided with the second hooks 30, and the two ends of the gap of the annular hoop 2 can be connected together through the connecting piece 3 by hooking the first hooks 20 and the second hooks 30 together.
Compared with the connection mode between a bolt and a nut in the prior art, the first hook 20 and the second hook 30 in the embodiment can realize simple connection relation by using simple structures, so that not only can materials be saved, but also the operation process of installing the sealing component at the position to be sealed can be simplified, and the installation efficiency is improved.
In addition, the connecting member 3 may also be a strip, and compared with the bolt and nut in the prior art, the first hook 20, the connecting member 3, and the second hook 30 on the annular hoop 2 in this embodiment may also occupy a smaller space, and may be applied to a position to be sealed where the space is smaller, and have higher applicability.
In practical application, the material of the annular hoop 2 has various choices, and the annular hoop 2 can be made of materials such as nylon, rubber, metal and the like.
In order to increase the connection stability between the annular hoop 2, the sealing strip 1 and the position to be sealed, so that the annular hoop 2 can apply pressure to the sealing strip 1 more stably, the material of the annular hoop 2 is preferably a hard material in this embodiment.
Further, in the present embodiment, it is preferable that the annular band 2 is any one of a steel wire, a lead wire, and a copper wire.
Wherein, the first hooks 20 at both ends of the annular hoop 2 are integrally formed with the annular hoop 2. When the annular band 2 is made of a hard material, the first hooks 20 may be formed by bending the end of the annular band 2.
As shown in fig. 3 and 4, along the extending direction of the sealing strip 1, a groove 10 is provided on one side of the sealing strip 1, the side of the sealing strip 1 provided with the groove 10 is attached to the annular hoop 2, and the annular hoop 2 is installed in the groove 10.
One side that is used for with the laminating of annular hoop 2 of sealing strip 1 is provided with recess 10, and annular hoop 2 is installed in recess 10, can promote the stability of being connected between annular hoop 2 and the sealing strip 1, prevents that annular hoop 2 from breaking away from sealing strip 1 for this seal assembly's use is more reliable.
For further improving the connection stability between the annular hoop 2 and the sealing strip 1, the annular hoop 2 can be clamped in the groove 10, and the inner wall of the groove 10 can apply pressure to the annular hoop 2 to hold the annular hoop 2 tightly in the groove 10.
As shown in fig. 1 and 2, the connection member 3 is an elastic member, and the elastic member is in a tension state and is used for applying a tensile force to both ends of the annular hoop 2 at the gap.
In this embodiment, the sealing strip 1 is in a strip shape, when the sealing strip 1 needs to be encircled into a ring shape and installed at a position to be sealed, the sealing strip 1 with a corresponding length can be cut out from the longer sealing strip 1 coiled into a roll shape according to the circumference of a part (such as a pin shaft on an excavator mechanical arm) used for being sleeved with the sealing ring around the position to be sealed, and the sealing strips 1 with different diameters are manufactured without adopting dies with different diameters.
The length of the elastic member in the sealing assembly provided by this embodiment can be changed within a certain range, and can be used for fine adjustment of the circumference of the annular structure formed by the annular band 2 and the elastic member after being connected together.
When a part (such as a pin shaft on an excavator mechanical arm) which is used for being sleeved with the sealing ring around the position to be sealed generates size deviation due to machining errors, the sealing strip 1 with the corresponding length and the annular hoop 2 which can slightly adjust the circumference by using the elastic element can be respectively and better suitable for the part with the size deviation.
Compared with the prior art in which the standard-size sealing ring has a deviation in size, or the sealing function cannot be achieved due to over-looseness, or the service life of the sealing ring is shortened due to over-tightness, the sealing strip 1 can be kept in the optimal tensioning state by using the elastic member while achieving the sealing function, and the sealing strip cannot be too loose or too tight.
In order to prevent the two ends of the weather strip 1 from contacting each other and separating due to the free extension of the elastic member, in the present embodiment, it is preferable that the annular band 2 is formed in an annular shape, and then the length change range of the elastic member between the two ends is small, and at this time, the expansion amount of the elastic member needs to be controlled within a small range. There are various methods for controlling the amount of expansion and contraction of the elastic member between the two ends of the annular hoop 2 after the annular hoop 2 is formed into a ring shape, and the present embodiment preferably adopts any one of the following two methods: the method one, adopt the spring with lower elastic limit; the second method is to make the elastic member connected to the two ends of the annular hoop 2 have the initial stretching amount.
Wherein, the elastic component can be a spring or an elastic rubber strip and the like.
As shown in fig. 1 and 2, the elastic member of the present embodiment is preferably a coil spring.
Further, in this embodiment, the elastic member is preferably a coil spring made of a hard material.
Example two:
the excavator mechanical arm provided by the embodiment comprises a bucket rod, a bucket and the sealing assembly in the first embodiment. One end of the bucket rod is rotatably connected to the bucket, and a sealing assembly is installed at the rotating connection position between the bucket rod and the bucket.
Wherein, the round pin axle is worn to be equipped with by one of them end of dipper, and the both ends of round pin axle all expose in the above-mentioned tip of dipper. The scraper bucket is provided with two parallel lug plates, and the end part of the pin shaft is rotatably connected to the lug plates. The sealing strip 1 in the sealing assembly is encircled on the pin shaft to abut against the end part, provided with the pin shaft, of the bucket rod and the lug plate. At this time, the sealing strip 1 is used as a sealing ring, and can play a sealing role.
The excavator mechanical arm provided by the embodiment adopts the sealing assembly in the first embodiment to replace the existing sealing ring, so that the same technical problems can be solved and the same technical effects can be achieved by the excavator mechanical arm provided by the embodiment and the sealing assembly in the first embodiment.
Example three:
the excavator provided by the embodiment comprises the excavator mechanical arm in the second embodiment, so that the excavator provided by the embodiment and the excavator mechanical arm in the second embodiment can solve the same technical problems and achieve the same technical effects.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A sealing assembly, characterized in that it comprises a sealing strip (1) and an annular band (2);
the annular hoop (2) is provided with a gap, two ends of the gap of the annular hoop (2) are connected through a connecting piece (3), and at least one end of the two ends of the gap of the annular hoop (2) is detachably connected with the connecting piece (3);
sealing strip (1) laminating is in the inboard of annular hoop (2), annular hoop (2) are used for with sealing strip (1) is fixed for confined annular structure.
2. The sealing assembly according to claim 1, wherein one end of the connector (3) is detachably connected with one end of the annular band (2) at the gap, and the other end of the connector (3) is detachably connected with the other end of the annular band (2) at the gap.
3. The sealing assembly according to claim 1, wherein a first hook (20) is respectively arranged at two ends of the annular hoop (2) at the gap, a second hook (30) is respectively arranged at two ends of the connecting piece (3), and the first hook (20) and the second hook (30) are correspondingly hooked together.
4. The sealing assembly according to claim 1, characterized in that the annular collar (2) is made of a hard material.
5. The sealing assembly according to claim 4, characterized in that the annular band (2) is any one of a steel wire, a lead wire and a copper wire.
6. The sealing assembly according to claim 1, characterized in that, in the extension direction of the sealing strip (1), one side of the sealing strip (1) is provided with a groove (10), the side of the sealing strip (1) provided with the groove (10) abuts the annular collar (2), and the annular collar (2) is mounted in the groove (10).
7. A sealing assembly according to any one of claims 1 to 6, wherein the connector (3) is a resilient member in a tensioned state for applying a pulling force to both ends of the annular band (2) at the gap.
8. The seal assembly of claim 7, wherein the resilient member is a coil spring.
9. An excavator arm comprising a stick, a bucket and a seal assembly as claimed in any one of claims 1 to 8;
wherein one end of the bucket rod is rotatably connected to the bucket, and the sealing assembly is installed at the rotary connection position between the bucket rod and the bucket.
10. An excavator, characterized in that the excavator comprises the excavator arm of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921918059.3U CN210770234U (en) | 2019-11-08 | 2019-11-08 | Sealing assembly, excavator mechanical arm and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921918059.3U CN210770234U (en) | 2019-11-08 | 2019-11-08 | Sealing assembly, excavator mechanical arm and excavator |
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| Publication Number | Publication Date |
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| CN210770234U true CN210770234U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921918059.3U Active CN210770234U (en) | 2019-11-08 | 2019-11-08 | Sealing assembly, excavator mechanical arm and excavator |
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| CN (1) | CN210770234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108057A (en) * | 2021-04-12 | 2021-07-13 | 上海三一重机股份有限公司 | Sealing ring assembly and operation machine |
-
2019
- 2019-11-08 CN CN201921918059.3U patent/CN210770234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108057A (en) * | 2021-04-12 | 2021-07-13 | 上海三一重机股份有限公司 | Sealing ring assembly and operation machine |
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