CN103089978A - Combined sealing device for caterpillar crane chassis to drive hydraulic motor speed reducer - Google Patents
Combined sealing device for caterpillar crane chassis to drive hydraulic motor speed reducer Download PDFInfo
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- CN103089978A CN103089978A CN 201310028236 CN201310028236A CN103089978A CN 103089978 A CN103089978 A CN 103089978A CN 201310028236 CN201310028236 CN 201310028236 CN 201310028236 A CN201310028236 A CN 201310028236A CN 103089978 A CN103089978 A CN 103089978A
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- flange plate
- seal
- bearing support
- large flange
- bearing
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Abstract
The invention provides a combined sealing device for a caterpillar crane chassis to drive a hydraulic motor speed reducer, and belongs to engineering machinery. The sealing device comprises a big flange plate, a bearing seat, an oil seal, a dustproof plate and an O-shaped ring. In original technology, a single oil seal is adopted to serve as a seal, and external slurry and dust easily pass through process intervals and permeate to the oil seal. The dustproof plate is arranged on a joint of the bearing seat and the big flange plate in the sealing device, a seal ring is arranged on a joint of the dustproof plate and the bearing seat, and thus a double-deck seal ring is formed. The double-deck seal ring, the dustproof plate, the bearing seat and the big flange plate form a closed seal cavity on peripheries of the process intervals. The seal cavity has positive pressure, and the external slurry and dust can be blocked to penetrate through the seal ring to enter the seal cavity. Therefore, wear-out failure of the oil seal due to mud and sand invasion is avoided, a bearing is effectively protected, and service life of a gear speed reducer is prolonged.
Description
Technical field
The present invention relates to a kind of engineering machinery, be specifically related to a kind of crawler crane chassis and drive on the hydraulic motor decelerator power unit, use combination sealing arrangement between the large flange plate at output position and bearing support.
Background technique
The crawler crane chassis drives on the hydraulic motor decelerator driver element, is connected by bearing between large flange plate and bearing support, realizes High Rotation Speed between the two, requires bearing that good lubricating and seal must will be arranged.The seal arrangement that uses at present only has a single lip or many lip mouth oil seals, carries out single sealing.This sealing configuration can also play the effect of sealing at short notice, and still along with the infiltration of mud, dust, lip is subjected to the friction of sand grain, accumulates over a long period and will cause lip to damage, until oil sealing heavy wear loses the effect of sealing.Sand grain enters bearing, destroys bearing, reduces working life.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of crawler crane chassis driving hydraulic motor decelerator combination sealing arrangement, connecting part at bearing support and large flange plate arranges dust pan, junction between dust pan and bearing support arranges the O RunddichtringO, and O RunddichtringO and intrinsic oil sealing form double-layer seal.
The present invention is achieved through the following technical solutions: a kind of crawler crane chassis driving hydraulic motor decelerator combination sealing arrangement, seal arrangement is comprised of large flange plate, bearing support, oil sealing and bearing.Described large flange plate is connected with bearing support with oil sealing by bearing.Described oil sealing is embedded in the groove of bearing support end, and the sealing lip of oil sealing abuts against on the cylndrical surface of large flange plate; Leave process gap between bearing support end face and large flange plate shaft shoulder end face.It is characterized in that: the connecting part in bearing support lower end and large flange plate upper end arranges dust pan, described dust pan is the rectangle annulus, the endoporus sliding fit of rectangle annulus is sleeved on the cylndrical surface of bearing support, rectangle annulus lower end is fixed on large flange plate by bolt assembly, and the junction plane between between dust pan and large flange plate is that gapless coordinates.Junction between described dust pan and bearing support arranges seal ring.
Described seal ring is the O RunddichtringO.Described RunddichtringO is inlaid in the circular groove of bearing support.
The invention has the beneficial effects as follows:
1, the component of double seal circle and periphery are at the Seal cage of process gap position formation sealing, effectively resist the intrusion of external mud, dust, avoided oil sealing to invade wear out failure because of silt, for bearing provides good working environment, improve the working life that tracked construction equipment is used speed reducer.
2, compact structure, easy to make, with low cost, be convenient to promote the use of.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the inherent technology structural representation.
In figure: 1, dust pan, 2, seal ring, 3, oil sealing, 4, bearing support, 5, bearing, 6, large flange plate, 7, bolt assembly, 8, process gap, 9, enclosed cavity.
Embodiment:
As shown in Figure 2: a kind of crawler crane chassis driving hydraulic motor decelerator combination sealing arrangement, seal arrangement is comprised of large flange plate 6, bearing support 4, oil sealing 3 and bearing 5.Described large flange plate 6 is connected with oil sealing by bearing 5 and is connected with bearing support 4.Described oil sealing 3 is embedded in the groove of bearing support 4 ends, and the sealing lip of oil sealing 3 abuts against on the cylndrical surface of large flange plate 6.Leave process gap 8 between bearing support 4 end faces and large flange plate 6 shaft shoulder end faces.
As shown in Figure 1: the present embodiment arranges dust pan 1 in the connecting part of bearing support 4 lower ends and large flange plate 6 upper ends, described dust pan 1 is the rectangle annulus, the endoporus sliding fit of rectangle annulus is sleeved on the cylndrical surface of bearing support 4, rectangle annulus lower end is fixed on large flange plate 6 by bolt assembly 7, and dust pan 1 is that gapless coordinates with junction plane between large flange plate 6.Junction between described dust pan 1 and bearing support 4 arranges seal ring 2.
It is the O RunddichtringO that the present embodiment adopts seal ring 2, and described O RunddichtringO is inlaid in the circular groove of bearing support 4.Also can adopt reinforced seal, the sealing of Y type.
As shown in Figure 1: seal ring 2 consists of double-layer seal rings with oil sealing 3, and double-layer seal rings and dust pan 1, bearing support 4 and large flange plate 6 form the Seal cage 9 of sealing at the periphery of process gap 8.Theory analysis, speed reducer in the running, the lubricant oil in bearing 5 have certain malleation, malleation makes the lubricant oil of trace see through oil sealing 3 and enters Seal cage 9.Also malleation should be arranged in Seal cage 9, this malleation can also stop that outside mud, dust penetrate seal ring 2 and enter Seal cage 9.For the mud and the dust that enter Seal cage 9 interior trace, Seal cage 9 also plays the effect of storage, effectively avoids the intrusion bearing 5 of mud, dust, makes bearing 5 high lubricating effect, avoid oil sealing 3 to invade wear out failure because of silt, improved the working life of speed reducer.
As shown in Figure 2: intrinsic crawler crane only has an oil sealing 3 as sealing with the combination sealing arrangement of speed reducer, and outside mud, dust is easy to enter oil sealing inside by process gap 8, damages bearing.
As shown in Figure 1: be that gapless coordinates in order to guarantee dust pan 1 with junction plane between large flange plate 6, the present embodiment is to utilize the accuracy of manufacturing of raising component to guarantee.If accuracy of manufacturing does not reach, can also increase sealing gasket or seal ring.
Claims (2)
1. a crawler crane chassis drives the hydraulic motor decelerator combination sealing arrangement, and seal arrangement is comprised of large flange plate (6), bearing support (4), oil sealing (3) and bearing (5); Described large flange plate (6) is connected 3 by bearing (5) with oil sealing) be connected with bearing support (4); Described oil sealing (3) is embedded in the groove of bearing support (4) end, and the sealing lip of oil sealing (3) abuts against on the cylndrical surface of large flange plate (6); Leave process gap (8) between bearing support (4) end face and large flange plate (6) shaft shoulder end face; It is characterized in that: the connecting part in bearing support (4) lower end and large flange plate (6) upper end arranges dust pan (1), described dust pan (1) is the rectangle annulus, the endoporus sliding fit of rectangle annulus is sleeved on the cylndrical surface of bearing support (4), rectangle annulus lower end is fixed on large flange plate (6) by bolt assembly (7), and the junction plane between between dust pan (1) and large flange plate (6) is that gapless coordinates; Junction between described dust pan (1) and bearing support (4) arranges seal ring (2).
2. crawler crane according to claim 1 chassis drives the hydraulic motor decelerator combination sealing arrangement, and it is characterized in that: described seal ring (2) is the O RunddichtringO.Described (O) RunddichtringO is inlaid in the circular groove of bearing support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310028236 CN103089978A (en) | 2013-01-24 | 2013-01-24 | Combined sealing device for caterpillar crane chassis to drive hydraulic motor speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310028236 CN103089978A (en) | 2013-01-24 | 2013-01-24 | Combined sealing device for caterpillar crane chassis to drive hydraulic motor speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103089978A true CN103089978A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310028236 Pending CN103089978A (en) | 2013-01-24 | 2013-01-24 | Combined sealing device for caterpillar crane chassis to drive hydraulic motor speed reducer |
Country Status (1)
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| CN (1) | CN103089978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105388A (en) * | 2018-01-15 | 2018-06-01 | 中铁工程机械研究设计院有限公司 | For the improved seal structure of hydraulic motor |
| CN108247575A (en) * | 2018-01-15 | 2018-07-06 | 中铁工程机械研究设计院有限公司 | The tooling device and its method of the two-way lip seal component of hydraulic motor drive end bearing bracket |
-
2013
- 2013-01-24 CN CN 201310028236 patent/CN103089978A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105388A (en) * | 2018-01-15 | 2018-06-01 | 中铁工程机械研究设计院有限公司 | For the improved seal structure of hydraulic motor |
| CN108247575A (en) * | 2018-01-15 | 2018-07-06 | 中铁工程机械研究设计院有限公司 | The tooling device and its method of the two-way lip seal component of hydraulic motor drive end bearing bracket |
| CN108247575B (en) * | 2018-01-15 | 2023-05-30 | 中铁科工集团装备工程有限公司 | Tool equipment and method for hydraulic motor front end cover bidirectional lip sealing assembly |
| CN108105388B (en) * | 2018-01-15 | 2024-03-08 | 中铁工程机械研究设计院有限公司 | Improved sealing structure for hydraulic motor |
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Application publication date: 20130508 |