CN210240237U - Sealed effectual pin bush - Google Patents
Sealed effectual pin bush Download PDFInfo
- Publication number
- CN210240237U CN210240237U CN201921206060.3U CN201921206060U CN210240237U CN 210240237 U CN210240237 U CN 210240237U CN 201921206060 U CN201921206060 U CN 201921206060U CN 210240237 U CN210240237 U CN 210240237U
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- CN
- China
- Prior art keywords
- pin
- pinhole
- sealing washer
- wall
- sealing ring
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Abstract
The utility model provides a sealed effectual pin bushing, includes the pin bushing body, and the pinhole has been seted up to this pin bushing body, and two criss-cross annular grooves have been seted up to the inner wall of this pinhole, the periphery middle part of pin bushing body is equipped with the oil groove, is equipped with two inlet ports that the symmetry set up on this oil groove, and these two inlet ports communicate with two intersections that form after two annular grooves intersect respectively, the left end inner wall of pinhole has set firmly left sealing washer, and the right-hand member inner wall of this pinhole has set firmly right sealing washer, the internal diameter of left and right sealing washer is less than the diameter of pinhole. When the pin bush is matched with the pin shaft for use, grease is injected into the oil groove through the grease nipple, and the grease in the oil groove enters the annular groove through the oil inlet hole, so that the space between the pin hole and the pin shaft is filled with the grease, and the pin shaft is lubricated during operation. Simultaneously, the both ends of pinhole are equipped with left sealing washer and right sealing washer, and this left and right sealing washer makes the butter can not reveal, and dust and moisture also can not enter into the pinhole in simultaneously to ensure that the butter can normal use in long-time.
Description
Technical Field
The utility model relates to a machine parts field, specific sealed effectual pin bushing that says so.
Background
The pin bush is a part matched with the pin shaft for use, and is widely applied to engineering machinery (excavators and bulldozers), automobiles, trains, ships and other places with movable arms. At present, when the pin bush and the pin shaft are used in a matched mode, butter needs to be injected into the pin bush, abrasion between the pin shaft and the pin bush is reduced, and the service life of the pin shaft and the pin bush is prolonged. At present, be equipped with various oil grooves in the pin bushing, if be equipped with 8 word grooves or have the hole groove of dense numb or draw and have the transverse groove, these oil grooves all are used for adorning the butter and provide the lubrication for pin bushing and round pin axle, however, the both ends of current pin bushing do not possess sealed effect, must gapped between pin bushing and the round pin axle relative activity both, can follow the clearance outflow of pin bushing after the friction butter of pin bushing melts in the work, dust or the moisture of rainy day in the operational environment also can permeate the pin bushing in, this lubrication life who has all influenced the butter to the life of pin bushing and round pin axle has also been influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealed effectual pin bushing, its main aim at provide one kind have leak protection oil, dustproof and waterproof pin bushing.
The utility model discloses a following technical scheme realizes:
the utility model provides a sealed effectual pin bushing, includes the pin bushing body, and the pinhole that link up about this pin bushing body was seted up, and two criss-cross annular grooves have been seted up to the inner wall of this pinhole, the periphery middle part of pin bushing body is equipped with the oil groove, is equipped with two inlet ports that the symmetry set up on this oil groove, and these two inlet ports communicate with two intersections that form after two annular grooves intersect respectively, the left end inner wall of pinhole has set firmly left sealing washer, and the right-hand member inner wall of this pinhole has set firmly right sealing washer, the internal diameter of left sealing washer, right sealing washer is less than the diameter of pinhole, and the interior periphery middle part of this left and right sealing washer is equipped with the fender portion of evagina.
Furthermore, left and right sealing washer is butadiene acrylonitrile rubber seal, the left end inner wall of pinhole is equipped with left mounting groove, the right-hand member inner wall of pinhole is equipped with right mounting groove, the periphery of left sealing washer is located left mounting groove and vulcanizes with left mounting groove and is connected, the periphery of right sealing washer is located right mounting groove and vulcanizes with right mounting groove and is connected.
From the above description of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses novel structure, design benefit, when the pin bushing uses with the round pin axle cooperation, pour into the butter into to the oil groove through the glib talker, in the butter in the oil groove enters into the annular groove through the inlet port to make and be full of the butter between pinhole and the round pin axle, for the round pin axle provides lubricated at the during operation. Simultaneously, the both ends of pinhole are equipped with left sealing washer and right sealing washer, and the fender portion in this left and right sealing washer makes the butter can not reveal, and dust and moisture also can not enter into the pinhole simultaneously to ensure that the butter can normal use in long-time. The utility model discloses can prolong the live time of butter greatly after the improvement, also guarantee the lubricated effect between the pinhole also round pin axle to the life of pin bush and round pin axle has also been prolonged.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Detailed Description
Refer to fig. 1 and 2. The pin bush with good sealing effect comprises a pin bush body 1, wherein the pin bush body 1 is provided with a pin hole 2 which is communicated from left to right, and the inner wall of the pin hole 2 is provided with two crossed annular grooves 3. An oil groove 4 is formed in the middle of the periphery of the pin bush body 1, two oil inlet holes 5 are symmetrically formed in the oil groove 4, and the two oil inlet holes 5 are communicated with two intersections formed after the two annular grooves 3 are intersected. The inner wall of the left end of the pin hole 2 is fixedly provided with a left sealing ring 6, the inner wall of the right end of the pin hole 2 is fixedly provided with a right sealing ring 7, the inner diameters of the left sealing ring 6 and the right sealing ring 7 are smaller than the diameter of the pin hole 2, and the middle parts of the inner peripheries of the left sealing ring 6 and the right sealing ring 7 are provided with convex blocking parts 8.
Refer to fig. 1. The left sealing ring 6 and the right sealing ring 7 are all nitrile rubber sealing rings, a left mounting groove (not marked in the drawing) is formed in the inner wall of the left end of the pin hole 2, a right mounting groove (not marked in the drawing) is formed in the inner wall of the right end of the pin hole 2, the periphery of the left sealing ring 6 is located in the left mounting groove (not marked in the drawing) and is connected with the left mounting groove (not marked in the drawing) in a vulcanization mode, and the periphery of the right sealing ring 7 is located in the right mounting groove (not marked in the drawing) and is connected with the right mounting groove (not marked in the drawing) in a vulcanization mode. The nitrile rubber sealing ring has the advantages of high temperature resistance, oil resistance, abrasion resistance and the like, and the shape design of the left sealing ring 6 and the right sealing ring 7 can play the roles of dust prevention, water prevention and oil leakage prevention while the friction coefficient of the pin bush is not increased.
Refer to fig. 1 and 2. The design principle of the utility model is as follows: when the pin bush is used with the pin shaft in a matched mode, grease is injected into the oil groove 4 through the grease nipple, the grease in the oil groove 4 enters the annular groove 3 through the oil inlet hole 5, and therefore the space between the pin hole 2 and the pin shaft is filled with the grease, and lubrication is provided for the pin shaft during operation. Simultaneously, the both ends of pinhole 2 are equipped with left sealing washer 6 and right sealing washer 7, and the fender portion 8 in this left sealing washer 6, the right sealing washer 7 makes the butter can not reveal, and dust and moisture also can not enter into the pinhole in simultaneously to ensure that the butter can normal use in long-time. The oil inlet holes 5 are two, so that the speed of the butter entering the two annular grooves 3 can be increased.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (2)
1. The utility model provides a sealed effectual round pin cover which characterized in that: the pin bush comprises a pin bush body, wherein a pin hole which is communicated with the left side and the right side is formed in the pin bush body, two crossed annular grooves are formed in the inner wall of the pin hole, an oil groove is formed in the middle of the periphery of the pin bush body, two oil inlet holes which are symmetrically formed are formed in the oil groove and are communicated with two crossed positions formed after the two annular grooves are crossed, a left sealing ring is fixedly arranged on the inner wall of the left end of the pin hole, a right sealing ring is fixedly arranged on the inner wall of the right end of the pin hole, the inner diameters of the left sealing ring and the right sealing ring are smaller than the diameter of the pin hole, and a blocking portion which protrudes outwards.
2. A well-sealed pin bushing as defined in claim 1, wherein: the left sealing ring and the right sealing ring are all nitrile rubber sealing rings, a left mounting groove is formed in the inner wall of the left end of the pin hole, a right mounting groove is formed in the inner wall of the right end of the pin hole, the periphery of the left sealing ring is located in the left mounting groove and is connected with the left mounting groove in a vulcanization mode, and the periphery of the right sealing ring is located in the right mounting groove and is connected with the right mounting groove in a vulcanization mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206060.3U CN210240237U (en) | 2019-07-29 | 2019-07-29 | Sealed effectual pin bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206060.3U CN210240237U (en) | 2019-07-29 | 2019-07-29 | Sealed effectual pin bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240237U true CN210240237U (en) | 2020-04-03 |
Family
ID=69993234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921206060.3U Active CN210240237U (en) | 2019-07-29 | 2019-07-29 | Sealed effectual pin bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240237U (en) |
-
2019
- 2019-07-29 CN CN201921206060.3U patent/CN210240237U/en active Active
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |