CN201496415U - Constant-pressure sealing type petal universal shaft - Google Patents
Constant-pressure sealing type petal universal shaft Download PDFInfo
- Publication number
- CN201496415U CN201496415U CN2009200310820U CN200920031082U CN201496415U CN 201496415 U CN201496415 U CN 201496415U CN 2009200310820 U CN2009200310820 U CN 2009200310820U CN 200920031082 U CN200920031082 U CN 200920031082U CN 201496415 U CN201496415 U CN 201496415U
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- universal joint
- petal
- shaft
- slide block
- joint
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Abstract
The utility model provides a constant-pressure sealing type petal universal shaft, belongs to oil drilling machines, and mainly solves the problem that the petal universal shaft is severely worn and has short service life. The petal universal shaft provided by the utility model comprises a connecting shaft, a universal joint and a transmission shaft joint; the universal joint comprises a first petal body and a second petal body which are meshed with each other; the first and the second petal bodies are hollow; and after being meshed, the hollow part of the petal bodies forms an inner cavity of the universal joint. The universal shaft is characterized in that lubricating oil is injected into the inner cavity of the universal joint; a seal sleeve used for sealing the gap at the meshed part of the first and the second petal bodies is mounted on an outer ring of the universal joint in a clamped manner; an oil through hole communicated with the inner cavity of the universal joint is formed on the transmission shaft joint; a slide block capable of blocking the oil through hole is provided; the slide block is connected with the movable end of an elastic device, and both the slide block and the movable end are positioned in an inner cavity of the transmission shaft joint; the fixed end of the elastic device is fixedly connected with the transmission shaft joint relatively; and the side surface of the slide block is sealed with the inner cavity of the transmission shaft joint.
Description
Technical field
The utility model belongs to a kind of oil drilling and r eoovery machine, specifically is a kind of petal cardan shaft.
Background technique
Petroleum drilling and mining is with in the field, and present petal cardan shaft mainly comprises coupling shaft 1, universal joint 3, ball seat 10, steel ball 11, shaft adapter 7, and as shown in Figure 1, universal joint comprises the intermeshing first petal body, the second petal body.Because the petal type cardan shaft in use is in the open environment, the tiny grains of sand in the mud can be along with mud enters between ball seat 10 and the steel ball 11, the first petal body and the second petal body engagement place in drilling process, produce and grind, quicken the wearing and tearing of steel ball and lobe seam, shortened the working life of cardan shaft.
The model utility content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of isobaric sealed type petal cardan shaft, and its wearing and tearing slows down, and prolong working life.
In order to address the above problem, the utility model is by the following technical solutions: these means of press seals formula petal cardan shafts, comprise coupling shaft, universal joint, shaft adapter, described universal joint comprises the intermeshing first petal body, the second petal body, the first petal body, the equal hollow of the second petal body, both hollow spaces of engagement back form the inner chamber of universal joint; Be marked with lubricant oil in the inner chamber of described universal joint, the outer ring of universal joint is installed with the stuffing box gland that is used to seal the first petal body, gap, the second petal body engagement place; Described shaft adapter is provided with the oil through that communicates with the inner chamber of universal joint, but the slide block of this oil through of shutoff is set, slide block is connected with the movable end of an elastic device and both all are arranged in the inner chamber of shaft adapter, the fixed end of elastic device is connected with the shaft adapter relative fixed, the side of slide block and the bore seal of shaft adapter.
During work, stuffing box gland can prevent that mud from entering, thereby slows down grinding, increases the service life.Lubricant oil in the universal joint inner chamber has certain pressure, and elastic device is compressed, and in the drilling process, the slip by slide block makes the pressure of universal joint inner chamber and the pressure of extraneous mud keep balance, prolongs the stuffing box gland life-span; And universal joint inside, two petal body engagement places all are in the lubricant oil medium, and slowed down the wearing and tearing of universal joint greatly, prolonged the bulk life time of cardan shaft.
As further technological scheme of the present utility model:
In these means of press seals formula petal cardan shafts, establish a pull bar in the inner chamber of described universal joint, one end of this pull bar is coaxial affixed with described coupling shaft, the other end is provided with major part, diameter at butt end is greater than the intracavity diameter of universal joint, and the end face of major part is made as arc surface and is slidingly matched with the end face of shaft adapter.When two petal bodies separated, the major part of pull bar can play anti-lost effect.
The beneficial effects of the utility model are:
(1) this petal cardan shaft is isobaric sealed type, and the position easy to wear of petal all is in having slowed down the bulk life time that wearing and tearing have prolonged cardan shaft in the lubricant oil medium;
(2) diameter at butt end of pull bar can play anti-lost effect greater than the intracavity diameter of universal joint when lobe separates with lobe;
(3) simple in structure, be convenient to install.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further:
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is the utility model embodiment's a structural representation;
Among the figure: 1 coupling shaft, 2 stuffing box glands, 3 universal joints, 4 pull bars, 41 major parts, 5 slide blocks, 6 springs, 7 shaft adapters, 8 jump rings, 9 " O " circle, 10 ball seats, 11 steel balls.
Embodiment
As shown in Figure 2, these means of press seals formula petal cardan shafts mainly comprise coupling shaft 1, universal joint 3, shaft adapter 7; Universal joint 3 comprises the intermeshing first petal body, the second petal body, the first petal body, the equal hollow of the second petal body, and both hollow spaces of engagement back form the inner chamber of universal joint.
The outer ring of universal joint 3 is installed with the stuffing box gland 2 that is used to seal the first petal body, gap, the second petal body engagement place.Establish a pull bar 4 in the inner chamber of universal joint 3, an end of pull bar 4 is coaxial affixed with coupling shaft 1, and the other end is provided with major part 41, and major part 41 diameters are greater than the intracavity diameter of universal joint, when the first petal body, the second petal body play anti-lost effect when separating; The end face of major part 41 is made as arc surface and is slidingly matched with the end face of shaft adapter 7.
Be marked with lubricant oil in the inner chamber of universal joint 3, shaft adapter 7 is provided with the oil through 71 that communicates with the inner chamber of universal joint 3.But the slide block 5 of a shutoff oil through 71 is set, and slide block 5 is connected with the movable end of spring 6 and both all are arranged in the inner chamber of shaft adapter 7, and the fixed end of spring is connected with shaft adapter 7 relative fixed by jump ring 8.Be provided with sealing between the inner chamber of the side of slide block 5 and shaft adapter 7 and enclose 9 with " O ".
During work, stuffing box gland 2 can prevent that mud from entering, thereby slows down grinding, increases the service life.Lubricant oil in the universal joint inner chamber has certain pressure, and spring 6 is compressed, and in the drilling process, the slip by slide block 5 makes the pressure of universal joint inner chamber and the pressure of extraneous mud keep balance, prolongs 2 life-spans of stuffing box gland; And to make the lobe seam of pull bar 4, two petal bodies be that the engagement place all is in the lubricant oil medium, slowed down the wearing and tearing of pull bar, lobe seam greatly, prolonged the bulk life time of cardan shaft.
The utility model is not limited only to the foregoing description.
Claims (2)
1. isobaric sealed type petal cardan shaft, comprise coupling shaft, universal joint, shaft adapter, described universal joint comprises the intermeshing first petal body, the second petal body, the first petal body, the equal hollow of the second petal body, and both hollow spaces of engagement back form the inner chamber of universal joint; It is characterized in that: be marked with lubricant oil in the inner chamber of described universal joint, the outer ring of universal joint is installed with the stuffing box gland that is used to seal the first petal body, gap, the second petal body engagement place; Described shaft adapter is provided with the oil through that communicates with the inner chamber of universal joint, but the slide block of this oil through of shutoff is set, slide block is connected with the movable end of an elastic device and both all are arranged in the inner chamber of shaft adapter, the fixed end of elastic device is connected with the shaft adapter relative fixed, the side of slide block and the bore seal of shaft adapter.
2. isobaric sealed type petal cardan shaft according to claim 1, it is characterized in that: establish a pull bar in the inner chamber of described universal joint, one end of this pull bar is coaxial affixed with described coupling shaft, the other end is provided with major part, diameter at butt end is greater than the intracavity diameter of universal joint, and the end face of major part is made as arc surface and is slidingly matched with the end face of shaft adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200310820U CN201496415U (en) | 2009-08-12 | 2009-08-12 | Constant-pressure sealing type petal universal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200310820U CN201496415U (en) | 2009-08-12 | 2009-08-12 | Constant-pressure sealing type petal universal shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496415U true CN201496415U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200310820U Expired - Fee Related CN201496415U (en) | 2009-08-12 | 2009-08-12 | Constant-pressure sealing type petal universal shaft |
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2009
- 2009-08-12 CN CN2009200310820U patent/CN201496415U/en not_active Expired - Fee Related
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