CN211667136U - Adjustable skeleton oil blanket seal structure - Google Patents
Adjustable skeleton oil blanket seal structure Download PDFInfo
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- CN211667136U CN211667136U CN201922310366.XU CN201922310366U CN211667136U CN 211667136 U CN211667136 U CN 211667136U CN 201922310366 U CN201922310366 U CN 201922310366U CN 211667136 U CN211667136 U CN 211667136U
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- oil seal
- framework oil
- planet carrier
- positioning
- bolt
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- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 58
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an adjustable skeleton oil blanket seal structure belongs to vehicle transmission technical field. This structure includes that the path end stretches into annular wheel hub and planet carrier, has the location step in the wheel hub, is equipped with first skeleton oil blanket outside and second skeleton oil blanket including in planet carrier and wheel hub's radial clearance, and the inner of at least second skeleton oil blanket is equipped with through the screw hole can and tight positioning bolt, and positioning bolt's end supports and leans on the location step, and first skeleton oil blanket passes through the location of second skeleton oil blanket. After the assembly, the relative positions of the hub and the planet carrier are unchanged, and the length of the positioning bolt extending out of the inner end surface of the second framework oil seal can be adjusted within a certain range, so that the assembly position of the framework oil seal relative to the planet carrier is adjustable, the purpose of staggering the abrasion grooves of the planet carrier is achieved, and the reliable sealing can be ensured after long-term operation. Adopt the utility model discloses can convenient operation, the mode of cost economy, properly solve the sealed difficult problem after the planet carrier wearing and tearing.
Description
Technical Field
The utility model relates to an oil blanket seal structure, especially an adjustable skeleton oil blanket seal structure suitable for hub reduction gear output belongs to vehicle transmission technical field.
Background
The wheel-side speed reducer is fixed on a rear axle of the mining dump truck through a planet carrier and is one of core components of the mining dump truck, and after power is input, the power is decelerated and torque is increased, and finally the power is output through a wheel hub to realize vehicle driving. Relative rotation takes place between wheel hub and the planet carrier, in order to guarantee the sealed of the inside lubricating oil of hub reduction gear, need set up seal structure between wheel hub and planet carrier.
According to the applicant, the sealing structure between the existing wheel hub and the planet carrier is realized by adopting a framework oil seal with a fixed position. Although the operation back, the skeleton oil blanket of wearing and tearing can be changed respectively at any time, but the sealed oil leak of slot production appears in the planet carrier wearing and tearing that long-term operation leads to, and is really very tricky because the planet carrier is large-scale forge piece, and the price is expensive, and the dismouting is loaded down with trivial details, and it can lead to great economic loss to change or maintain the planet carrier.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the adjustable framework oil seal structure is used for properly solving the problem of abrasion and sealing of a planet carrier by adjusting the framework oil seal.
In order to reach above purpose, the utility model discloses an adjustable skeleton oil blanket seal structure includes that the path end stretches into annular wheel hub and planet carrier, location step has in the wheel hub, be equipped with first skeleton oil blanket outside and second skeleton oil blanket including in planet carrier and wheel hub's radial clearance, at least the inner of second skeleton oil blanket is equipped with through the screw hole and can be tight positioning bolt, positioning bolt's end supports and leans on the location step, first skeleton oil blanket passes through second skeleton oil blanket location.
Because the relative position of the hub and the planet carrier is unchanged after the assembly, and the length of the positioning bolt extending out of the inner end surface of the second framework oil seal can be properly adjusted within a certain range, the assembly positions of the second framework oil seal and the first framework oil seal relative to the planet carrier can be adjusted, so that the purpose of staggering the abrasion grooves of the planet carrier is achieved, and the reliable sealing can be ensured after the long-term operation. Therefore, adopt the utility model discloses can convenient operation, the sealed difficult problem after the cost economy properly solving the planet carrier wearing and tearing.
The utility model discloses one of further perfection is: eight bolts and positioning bolts which are uniformly distributed in the circumferential direction and can be tightly pressed are respectively arranged at the outer end of the first framework oil seal and the inner end of the second framework oil seal; each two adjacent positioning bolts are in one group and are respectively screwed and pressed on the corresponding positioning gasket group and the arc-shaped positioning pressing plate; every two adjacent compression bolts are in a group and are respectively screwed and pressed on the corresponding compression gasket group and the arc-shaped compression pressing plate.
Further: and a round bolt head counter bore is formed in the pressing pressure plate.
The utility model discloses second is further perfect: the threaded holes of the first framework oil seal and the second framework oil seal are punched by the same threaded structures corresponding to the positions, the positioning bolt is composed of a large-diameter section and a small-diameter section which are opposite in thread turning direction, the compression bolt is in a tubular shape with an internal thread and an external thread, and the internal thread is matched with the external thread of the small-diameter section.
Furthermore, the outer end of the compression bolt and the large-diameter section and the small-diameter section of the positioning bolt are respectively provided with corresponding clamping nuts, so that clamping structures of the compression bolt and the positioning bolt can be formed.
The utility model discloses further perfect is: and a detachable annular baffle is fixedly arranged in one end of the hub, which is adjacent to the planet carrier.
The utility model discloses further perfection is again: the first framework oil seal is of a double-lip structure, and the second framework oil seal is of a single-lip structure.
Drawings
The present invention will be described in further detail with reference to the following embodiments, which are illustrated in the accompanying drawings.
Fig. 1 is a schematic view of an overall structure of a first embodiment of the present invention.
Fig. 2 is a schematic perspective exploded view of the embodiment of fig. 1.
Fig. 3 is a partially enlarged schematic view of fig. 1.
Fig. 4 is a schematic diagram of a partially enlarged structure of a second embodiment of the present invention.
Detailed Description
Example one
The adjustable framework oil seal structure of the embodiment is as shown in fig. 1, 2 and 3, the small diameter end of the planet carrier 1 extends into the annular hub 11, and a positioning step is arranged in the hub 11. An outer first framework oil seal 5 and an inner second framework oil seal 7 are arranged in a radial gap between the planet carrier 1 and the hub 11. The first skeleton oil blanket 5 of this embodiment is two lip structures, and the left side lip is dustproof, and right side lip seals lubricating oil, and second skeleton oil blanket 7 is single lip structure.
Eight bolts 10 which can be tightly adjusted and are circumferentially and uniformly distributed are arranged at the inner end of the second framework oil seal 7 through threaded holes, eight pressing bolts 6 which can be tightly adjusted and are circumferentially and uniformly distributed are arranged at the outer end of the first framework oil seal 5 through threaded holes, the end of the adjusting bolt 10 is abutted against a positioning step, and the first framework oil seal 5 is abutted against the outer end of the second framework oil seal 7 through the inner end for positioning.
Every two positioning bolts 10 are in a group and are pressed and held on the positioning gasket group 8 consisting of the arc gaskets 8.1, 8.2, 8.3, 8.4 and 8.5 and the arc positioning pressure plate 9 after being screwed, so that the positioning bolts 10 are in a tightening state of eliminating thread gaps after being screwed. After every two hold-down bolts 6 are screwed down, the hold-down bolt groups 4 formed by arc gaskets 4.1, 4.2, 4.3, 4.4 and 4.5 and the arc hold-down press plate 3 are pressed to form a structure capable of being tightened. The compressing pressure plate 3 is provided with a round bolt head counter bore. The detachable annular baffle 2 is fixedly installed in one end, close to the planet carrier 1, of the hub 11, silt and water can be blocked, and axial limiting of a framework oil seal is assisted.
When the groove of the planet carrier is abraded and needs to be maintained, the compression bolt and the positioning bolt can be detached in sequence, and a plurality of compression gasket groups can be taken down as appropriate and added into the positioning gasket group; a plurality of pieces in the positioning gasket group can be taken down and added into the pressing gasket group, so that the contact positions of the first framework oil seal lip and the second framework oil seal lip with the planet carrier are changed, and the planet carrier can still be reliably sealed and continuously used.
Experiments prove that after the embodiment is adopted, under the condition that parts do not need to be increased and replaced, the planet carrier can be normally used for a long time by adjusting the extending length of the limiting bolt and locking the limiting bolt tightly by means of the proper quantity of the gaskets, and the convenience and the economical efficiency of maintenance of the hub reduction gear are obviously improved.
Example two
The adjustable framework oil seal structure of the embodiment is basically the same as the first embodiment in constitution, as shown in fig. 4, except that the threaded holes of the first framework oil seal 5 and the second framework oil seal 7 are through holes with the same threaded structure corresponding to the positions, the positioning bolt 10 is composed of a large diameter section 10-2 and a small diameter section 10-1 with opposite thread turning directions, the compression bolt 6 is in a tubular shape with internal and external threads, and the internal thread is matched with the small diameter section. The outer end of the pressure bolt 6 and the large diameter section 10-2 and the small diameter section 10-1 of the positioning bolt 10 are respectively provided with a respective clamping nut 12, thereby forming a clamping structure of the pressure bolt 6 and the positioning bolt 10.
When the contact position of the oil seal lip of the first framework oil seal 5 and the oil seal lip of the second framework oil seal 7 with the planet carrier 1 needs to be changed, two modes of equidirectional adjustment and reverse adjustment can be provided.
And (3) adjusting in the same direction, namely, enabling the first framework oil seal 5 and the second framework oil seal 7 to shift relative to the planet carrier 1 in the same direction, loosening the clamping nuts of the compression bolt 6 and the large-diameter section 10-2 of the positioning bolt 10, screwing in the compression bolt 6, attaching the inner end of the compression bolt 6 to the end surface of the large-diameter section 10-2 (shown in figure 4) to enable the positioning bolt 10 with the same thread structure in the large-diameter section to synchronously rotate, and because the end of the positioning bolt 10 is abutted against a positioning step and cannot axially shift in the screwing direction of screwing in the compression bolt 6, under the action of a screw pair, the first framework oil seal 5 and the second framework oil seal 7 axially shift in the same direction opposite to screwing in the compression bolt 6, the distance between the two framework oil seals is unchanged, and the nuts can be screwed up after adjustment.
Reverse adjustment, namely, the first framework oil seal 5 and the second framework oil seal 7 are shifted relative to the planet carrier 1 in different directions, at the moment, the nuts which are fastened together with the small-diameter section 10-1 and the large-diameter section 10-2 of the positioning bolt 10 are loosened, and the hexagon socket at the end of the small-diameter section is screwed in the direction of screwing the compression bolt 6, so that the large-diameter section of the positioning bolt 10 rotates together because the hexagon socket is coaxial with the large-diameter section 10-2, and the second framework oil seal 7 is axially shifted towards the direction close to the first framework oil seal 5 because the end of the positioning bolt 10 is abutted against a positioning step and cannot be axially shifted; meanwhile, under the action of the small-diameter section 10-1 and the inner hole reverse spiral pair of the compression bolt 6, the compression bolt 6 is enabled to shift towards the direction close to the second framework oil seal 7, the compression bolt 6 is fixedly connected with the first framework oil seal 5 due to the effect of the compression bolt parallel nut, so that the first framework oil seal 5 and the second framework oil seal 7 shift towards different directions close to each other, the distance between the two framework oil seals is changed, and the compression bolt 6 can be screwed and screwed up after being adjusted.
By adopting the embodiment, parts do not need to be added or replaced, the relative positions of the framework oil seals and the planet carrier are completely changed through the adjusting bolts, so that the planet carrier can be normally used for a long time, the number of the parts is small, the two framework oil seals can realize the same-direction displacement of the pressure bolts and the positioning bolts through adjusting the same thread parts of the pressure bolts and the positioning bolts, and can realize the opposite-direction displacement of the pressure bolts and the positioning bolts through adjusting the opposite thread parts of the pressure bolts and the positioning bolts, therefore, the pressure bolts and the positioning bolts can be selected as.
In addition to the above embodiments, the present invention may have other embodiments. For example, the fastening structure may be a bolt or a spring washer having a self-locking function. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (7)
1. The utility model provides an adjustable skeleton oil blanket seal structure, includes that the path end stretches into annular wheel hub and planet carrier, wheel hub has the location step in, be equipped with first skeleton oil blanket outside and second skeleton oil blanket including in planet carrier and wheel hub's radial clearance, its characterized in that: at least, the inner of the second framework oil seal is provided with a positioning bolt which can be tightened through a threaded hole, the end of the positioning bolt is abutted against the positioning step, and the first framework oil seal is positioned through the second framework oil seal.
2. The adjustable framework oil seal sealing structure of claim 1, wherein: eight bolts and positioning bolts which are uniformly distributed in the circumferential direction and can be tightly pressed are respectively arranged at the outer end of the first framework oil seal and the inner end of the second framework oil seal; each two adjacent positioning bolts are in one group and are respectively screwed and pressed on the corresponding positioning gasket group and the arc-shaped positioning pressing plate; every two adjacent compression bolts are in a group and are respectively screwed and pressed on the corresponding compression gasket group and the arc-shaped compression pressing plate.
3. The adjustable framework oil seal sealing structure of claim 2, wherein: and a round bolt head counter bore is formed in the pressing pressure plate.
4. The adjustable framework oil seal sealing structure of claim 1, wherein: the threaded holes of the first framework oil seal and the second framework oil seal are punched by the same threaded structures corresponding to the positions, the positioning bolt is composed of a large-diameter section and a small-diameter section which are opposite in thread turning direction, the compression bolt is in a tubular shape with an internal thread and an external thread, and the internal thread is matched with the external thread of the small-diameter section.
5. The adjustable framework oil seal sealing structure of claim 2, wherein: the outer end of the compression bolt and the large-diameter section and the small-diameter section of the positioning bolt are respectively provided with corresponding clamping nuts, so that clamping structures of the compression bolt and the positioning bolt can be formed.
6. The adjustable framework oil seal structure according to any one of claims 1 to 5, characterized in that: and a detachable annular baffle is fixedly arranged in one end of the hub, which is adjacent to the planet carrier.
7. The adjustable framework oil seal sealing structure of claim 6, wherein: the first framework oil seal is of a double-lip structure, and the second framework oil seal is of a single-lip structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310366.XU CN211667136U (en) | 2019-12-20 | 2019-12-20 | Adjustable skeleton oil blanket seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310366.XU CN211667136U (en) | 2019-12-20 | 2019-12-20 | Adjustable skeleton oil blanket seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667136U true CN211667136U (en) | 2020-10-13 |
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ID=72734065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922310366.XU Active CN211667136U (en) | 2019-12-20 | 2019-12-20 | Adjustable skeleton oil blanket seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667136U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893435A (en) * | 2022-05-27 | 2022-08-12 | 中国南方电网有限责任公司超高压输电公司昆明局 | Centrifugal pump and skeleton oil blanket |
-
2019
- 2019-12-20 CN CN201922310366.XU patent/CN211667136U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893435A (en) * | 2022-05-27 | 2022-08-12 | 中国南方电网有限责任公司超高压输电公司昆明局 | Centrifugal pump and skeleton oil blanket |
| CN114893435B (en) * | 2022-05-27 | 2024-04-02 | 中国南方电网有限责任公司超高压输电公司昆明局 | Centrifugal pump and skeleton oil seal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |