CN102410376B - Hydraulic sealing method and sealing ring for injection height-adjusting bridge steel support - Google Patents
Hydraulic sealing method and sealing ring for injection height-adjusting bridge steel support Download PDFInfo
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- CN102410376B CN102410376B CN 201110214033 CN201110214033A CN102410376B CN 102410376 B CN102410376 B CN 102410376B CN 201110214033 CN201110214033 CN 201110214033 CN 201110214033 A CN201110214033 A CN 201110214033A CN 102410376 B CN102410376 B CN 102410376B
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Abstract
The invention discloses a hydraulic sealing method and a sealing ring for an injection height-adjusting bridge steel support. A trapezoidal notch is formed at the bottom of a piston of the bridge steel support; the sealing ring is sleeved on the trapezoidal notch; and a support basin and a piston are in clearance fit. The sealing ring is arranged at a position of the bottom face of the support basin before the support piston is arranged at the position of the bottom face of the support basin, so the sealing ring extrudes to form a primary seal. When a height-adjusting filler is filled through a filling opening, in the process that the upper structure of the support is lifted by high-pressure hydraulic pressure, the end face and the radial inner side of the sealing ring are subjected to the high-pressure hydraulic pressure and the internal force of the sealing ring, and the sealing ring is extruded to be deformed and is kept static relative to the support piston to form a high-pressure static seal. On the radial outer side of the sealing ring, the filler compresses the long lip side of the sealing ring to retreat to the lip opening cavity of the sealing ring through upward and outward hydraulic pressure, so a space occupied by the long lip side becomes shorter, the long lip side extrudes and is tightly adhered to a basin structure and the sealing ring slides upwards relatively to form a high-pressure dynamic seal on the radial outer side of the sealing ring.
Description
Technical field
The present invention relates to encapsulating method and the structure of a kind of bridge with parts, a kind of encapsulating method and seal ring of injecting height-adjusting bridge steel support specifically, this kind of encapsulating method and seal ring are a kind of unidirectional motive sealings of high-pressure and hydraulic that can realize the injection height-adjusting bridge steel support, simultaneously low to sealing configuration counterpart (hole, axle) processing request, the package technique difficulty is low, extremely is convenient to encapsulating method and the seal ring of assembling.
Background technique
The injection height-adjusting bridge steel support has increased the injection height-regulating structure with respect to not being both of plain carbon steel bearing, the lower support plate of plain carbon steel bearing is decomposed into to benzvalene form structure, piston cylinder operator two macrostructures, with seal ring sealing, then increase inlet and just form height-regulating structure between piston cylinder operator and benzvalene form structure.The most critical parts that form this height-regulating structure are seal rings, realizing that bearing injection liquid bulking agent (polyurethane) is while heightening, the seal ring General Requirements is realized the dynamic hydraulic sealing in the scope that comprises 15-32 MPa, until bulking agent solidifies (being generally 4-12 hour).As obvious liquid bulking agent occurs reveal, think seal failure, this also just means that bearing injection height regulating function lost efficacy.Therefore, the effect that injectable is heightened the steel support seal ring is particularly crucial.
Injection height-adjustable supports encapsulating method mainly contains two kinds of modes at present.A kind of is the structure adopted as bridge basin-type rubber height-adjustable supports, thereby sealing is by whole bulk rubber pad pressure-bearing rubber pad sidewall and the airtight realization of end basin inwall.This sealing means comparative maturity, sealing effect might as well.One of characteristic that its maximum problem is ball shaped steel bearing is exactly that carrying is all born by steel structure, load-carrying properties are obvious more superior than neoprene bearing, as adopted the monoblock rubber pad to do sealing configuration, offset the strong superiority of ball shaped steel bearing load-carrying properties in ball shaped steel bearing.
As the patent No. is: 02244866.7, denomination of invention is: a kind of Chinese patent of height-adjustable supports, a kind of similar sealing means is disclosed, comprise lower support plate (1,4), be positioned at the vibration damper plate (6) on lower support plate (4) top.Be provided with a baffle ring (3) on the lower support plate (4) in the outside of vibration damper plate (6), the outer of vibration damper plate (6) is overlapped on this baffle ring (3), be provided with and open top fastening bolt (2) on vertical direction on described baffle ring (3), and be threaded with it.
Another way is that injectable is heightened to the piston of steel support, bar, the cylinder structure that the benzvalene form structural correspondence is considered as common oil cylinder, and between piston and benzvalene form structure, adopt special-purpose hydraulic sealing ring to seal, and excavate seal groove on the piston of bearing or benzvalene form structure, the hydraulic sealing ring sealing is installed in seal groove.There are conventional Y-shaped ring, V-type circle etc. in common unidirectional hole with seal ring, utilizes the pressure after seal ring lip limit opening is full of the high-pressure liquid medium, and compressing lip limit is vertical to be fitted tightly with cylinder, bar, realizes selfsealings.The sealing effect of this sealing means is fine, on engineering, also uses in a large number.Yet herein, its maximum problem is that all matrix (hole wall, the casing wall) processing request to assembling is very high for the common hydraulic sealing rings such as Y-shaped ring or V-type circle, with regard to seal ring is used in hole, to the surface roughness General Requirements Ra of hole wall≤0.4, need precision grinding process, cost is high, manufacturing efficiency is low.Y-shaped ring or V-type circle for hole, all need to form initial sealing at radially pre-crush seal circle in addition, and its lip limit is under free state, maximum outside diameter can be than the aperture be mated large (can be considered interference fit), assembling difficulty is large, and assembling technical ability requires high, and efficiency is lower.In brief, at injectable, heighten on ball shaped steel bearing and use the cost of Y-shaped ring or V-type circle high, bearing manufacturing efficiency is low, is not desirable selection.
As the patent No. is: 200820076682.4, denomination of invention is: the Chinese patent of ball type height-adjusting support, a kind of similar sealing means is disclosed, its technical characteristics is: comprise upper bracket plate, ball-type steel scaleboard, middle steel scaleboard, in the middle of described, the arranged outside of steel scaleboard has the steel basin, between middle steel scaleboard and steel basin, is provided with seal ring, has the hydraulic pressure hole on the steel basin, heighten injecting by special tool to perfusion in the hydraulic pressure hole, can carry out the measurement of bearing vertical bearing capacity and the lifting of bearing.
In sum, all there are certain deficiency in encapsulating method and the device of existing injection height-adjustable supports, therefore necessary this are improved.
Summary of the invention
The technical problem to be solved in the present invention is for the existing existing deficiency of ball shaped steel bearing of heightening, propose a kind ofly to be applicable to heightening that ball shaped steel bearing uses, can bear high-pressure and hydraulic (comprising 15-32MPa) motive sealing, simultaneously low to the bearing structure processing request that is sealed and matched, the mounting technology difficulty is low, and encapsulating method and the seal ring of steel support heightened in the injection that extremely is beneficial to assembling.
For solving the problems of the technologies described above, the technological scheme that the present invention proposes is: the encapsulating method of bridge steel support is heightened in a kind of injection, one trapeze cut is arranged at the bottom of the piston in bridge steel support (axle), on trapeze cut, cover has seal ring, and seal ring is greater than the vertical height of piston (axle) bottom trapeze cut at vertical thickness; Bearing basin (hole) adopts Spielpassung with piston (axle); At first seal ring is installed to the basal surface position in bearing basin (hole) prior to bearing piston (axle), now seal ring does not have stress deformation substantially, again bearing piston (axle) need to further be installed to the basal surface position in bearing basin (hole), contact with basin (hole) formula structure, make the seal ring extruding form preliminary sealing; When from the inlet injection, heightening bulking agent, in the bearing superstructure, comprise the piston (axle) in bridge steel support, be subject in the high pressure liquid pressure lifting process of (including lifting trend), at seal ring end face and radially inner side, be subject to respectively high pressure liquid pressure and seal ring endogenetic process, produce compressional deformation, keep relative static with bearing piston (axle), form the high pressure static seal; At the seal ring radial outside, bulking agent by upwards and hydraulic coupling laterally further oppress labiad oral cavity, the long lip of seal ring limit and shrink back, the space that makes long lip limit occupy changes from long to short or its trend is arranged, long lip limit and basin (hole) formula structure further extruding is closely connected, the relative upward sliding of seal ring, form high pressure dynamic sealing at radial outside simultaneously.
The seal ring of bridge steel support is heightened in a kind of injection proposed according to said method, is the square-section seal ring, and, on internal diameter limit and the limit, lower end surface of square-section, by the corner cut mode, prunes one jiao, forms a unfilled corner; On the outer diameter side of seal ring square-section, in square-section, at least have a triangular groove simultaneously; By on the prune end surface side of a jiao and outer diameter side, to remaining seal after the triangular groove had in square-section, forming the lip limit, the lip direction on lip limit is radially, basin in triangular groove and bearing (hole) inner edge forms the lip chamber, the lip chamber not with the high-pressure and hydraulic medium contact; By the formed upper-end surface, limit, upper end of seal ring, be attached on the trapeze cut side of piston (axle) bottom in spherical bearing, the limit, lower end surface that the limit, lower end surface of a jiao of pruning forms is down uncovered.
The invention has the advantages that:
1 seal ring and counterpart are under original state and in assembly process, and radially without interference fit, the seal ring sealing is pressed through in advance bearing gravity compressing seal ring and realizes, assembly technical requirement is low, and efficiency of assembling is high.
2 seal rings are low to the processing request of counterpart, and the counterpart surface roughness reaches Ra≤1.6 and gets final product, and Vehicle Processing can reach, and the counterpart processing cost is low.
3 seal ring thickness are than the U-shaped circle of the standard of same outer diameter as, and Y-shaped ring is thin, can reduce the height of whole bearing, thereby obviously reduce the cost of bearing.
The accompanying drawing explanation
Fig. 1 is overall installation schematic diagram of the present invention;
Fig. 2 is unreinforced seal ring cross-section schematic diagram of the present invention;
Fig. 3 is the present invention while installing, and is not subject to bearing weight schematic diagram;
After Fig. 4 is installation of the present invention, be out of shape by bearing weight, with axis hole, form the initial sealing schematic diagram;
Fig. 5 is under the present invention in working order, is subject to high pressure liquid pressure selfsealings schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, further the present invention will be described:
By accompanying drawing 1, can find out, the present invention relates to a kind of injection and heighten the encapsulating method of bridge steel support, one trapeze cut 2 is arranged at the bottom of the piston in bridge steel support (axle) 1, on trapeze cut 2, cover has seal ring 3, and seal ring 3 is greater than the vertical height of piston (axle) bottom trapeze cut 2 at vertical thickness; Bearing basin (hole) 4 adopts Spielpassung with piston (axle) 1; At first seal ring 3 is installed to the basal surface position of bearing basin (hole) 4 prior to bearing piston (axle) 1, now seal ring 3 does not have stress deformation substantially, again bearing piston (axle) 1 is installed to as required to the basal surface position of bearing basin (hole) 4, contact with basin (hole) formula structure, make seal ring 3 extruding form preliminary sealing; When from the inlet injection, heightening bulking agent, in the bearing superstructure, comprise the piston (axle) 1 in bridge steel support, be subject in the high pressure liquid pressure lifting process of (including lifting trend), at seal ring 3 end faces and radially inner side, be subject to respectively high pressure liquid pressure and seal ring endogenetic process, produce compressional deformation, now seal ring 3 keeps relative static with bearing piston (axle) 1, forms the high pressure static seal; At seal ring 3 radial outsides, bulking agent by upwards and hydraulic coupling laterally further oppress 5 labiad oral cavities, the long lip of seal ring limit and shrink back, the space that makes long lip limit 5 occupy changes from long to short or its trend is arranged, with basin (hole) formula structure, further extruding is closely connected on long lip limit 5, seal ring 3 pairs of upwards slips mutually simultaneously, form high pressure dynamic sealing at piston (axle) 1 radial outside.
As shown in Figure 2, seal ring 3 is the square-section seal ring to the seal ring that bridge steel support is heightened in a kind of injection proposed according to said method, and, on the internal diameter limit 9 and limit, lower end surface of square-section, by the corner cut mode, prunes one jiao, forms a unfilled corner 6; On the outer diameter side of seal ring square-section, in square-section, at least have a triangular groove 7 simultaneously; By on the prune end surface side of a jiao and outer diameter side, to remaining seal after the triangular groove had in square-section, forming lip limit 8, the lip direction on lip limit 8 is radially, basin in triangular groove and bearing (hole) inner edge forms the lip chamber, the lip chamber not with the high-pressure and hydraulic medium contact; By the formed upper-end surface, limit, upper end of seal ring, be attached on the trapeze cut side of piston (axle) bottom in spherical bearing, the limit, lower end surface that the limit, lower end surface of a jiao of pruning forms is down uncovered.Described seal ring is by radial seal and end face seal, and common formation fully seals, and can bear high-pressure and hydraulic motive sealing (pressure range comprises 15-32 MPa).Described seal ring can be hole with or sealing for axle, seal ring is exoskeletal or with the seal ring of skeleton.
Can find out working principle of the present invention by accompanying drawing 3-5, as follows:
The Form of Technique that 1 accompanying drawing 3-5 presents is the hole one-way sealing.Radially, seal ring under original state with counterpart, comprise that basin (hole) formula structure and piston (axle) the formula structure in spherical bearing do not need interference fit, can be in place easily when mounted.
2 vertical, and the thickness of seal ring is greater than the height of the seal ring installing space stayed on piston (axle) formula structure.In installation process, seal ring is in place prior to bearing piston (axle) formula structure, and now seal ring does not have stress deformation substantially, and bearing piston (axle) formula structure need to further be in place, and with basin (hole) formula structure, contacts, as shown in Figure 3.
After 3 installations, bearing piston (axle) formula structure contacts with basin (hole) formula structure stress, the long lip of seal ring limit compressive deformation, and formation will be in the trend that radially reaches vertical stretching, extension.Radially with counterpart, comprise basin (hole) formula structure and piston (axle) formula structure in spherical bearing, all push and form preliminary sealing, as shown in Figure 4.
4 when heightening bulking agent from the inlet injection, in the bearing superstructure, be subject in the high pressure liquid pressure lifting process of (including lifting trend), at seal ring radially inner side and end face, seal ring is subject to respectively seal ring internal force and high pressure liquid pressure-acting, keep relative static with bearing piston (axle) formula structure, form the high pressure static seal.At the seal ring radial outside, bulking agent by diagram upwards and hydraulic coupling laterally further oppress labiad oral cavity, the long lip of seal ring limit and shrink back, the space that makes long lip limit occupy changes from long to short or its trend is arranged, long lip limit and basin (hole) formula structure further extruding is closely connected, the relative upward sliding of seal ring, form high pressure dynamic sealing at radial outside simultaneously.According to upper, formed complete unidirectional motive sealing, as shown in Figure 5.
5 bearing is heightened to predetermined height after, stop injecting bulking agent, wait for bulking agent quietly and solidify.Design carrying and the actual bearer of considering bearing generally are not quite similar, and require bearing can heighten smoothly when bridge is fully loaded and unloaded, and seal ring must can adapt to different pressure ranges, and through preresearch estimates, the pressure range of its adaptation need comprise 15-32MPa.
6 differences according to the bearing concrete structure, but also respective change of the layout of seal ring can oppositely be opened lip or open a plurality of lips.Specialization of the present invention is, under original state and in installation process, seal ring and counterpart are without interference fit, and the lip chamber does not need to contact with hydraulic medium, as required select tape skeleton or be not with skeleton.
The present invention is by a kind of special Sealing, and seal ring and counterpart are under original state and in assembly process, and radially without interference fit, the seal ring sealing is pressed through the realization of bearing gravity compressing seal ring in advance, and assembly technical requirement is low, and efficiency of assembling is high; Adopt the radial and axial combination seal of bottom comer, seal ring is low to the processing request of counterpart, and the counterpart surface roughness reaches Ra≤1.6 and gets final product, and Vehicle Processing can reach, and the counterpart processing cost is low; Seal ring thickness is than the U-shaped circle of the standard of same outer diameter as, and Y-shaped ring is thin, can reduce the height of whole bearing, thereby obviously reduces the cost of bearing.
Claims (5)
1. inject height-adjusting bridge steel support hydraulic seal method for one kind, it is characterized in that: a trapeze cut is arranged at the bottom of the bearing piston in bridge steel support, on trapeze cut, cover has seal ring, and seal ring is greater than the vertical height of bearing piston base trapeze cut at vertical thickness; Bearing basin and bearing piston adopt Spielpassung; At first seal ring is installed to the basal surface position of bearing basin prior to the bearing piston, now seal ring does not have stress deformation substantially, again the bearing piston need to further be installed to the basal surface position of bearing basin, contact with the benzvalene form structure, make the seal ring extruding form preliminary sealing; When from the inlet injection, heightening bulking agent, in the bearing superstructure, comprise the bearing piston in bridge steel support, be subject in the process of high pressure liquid pressure lifting, at seal ring end face and radially inner side, be subject to respectively high pressure liquid pressure and seal ring endogenetic process, produce compressional deformation, keep relative static with the bearing piston, form the high pressure static seal; At the seal ring radial outside, bulking agent by upwards and hydraulic coupling laterally further oppress labiad oral cavity, the long lip of seal ring limit and shrink back, the space that makes long lip limit occupy changes from long to short or its trend is arranged, long lip limit and benzvalene form structure further extruding are closely connected, the relative upward sliding of seal ring, form high pressure dynamic sealing at radial outside simultaneously.
2. inject according to claim 1 height-adjusting bridge steel support hydraulic seal method, it is characterized in that: by utilizing hydraulic coupling, shunk back in labiad oral cavity, the long lip of seal ring limit, along the lip edge direction power that is squeezed, with hole or the closely connected formation selfsealings of axle, the brachycheilia limit directly is not subject to hydraulic coupling.
3. inject according to claim 1 the high-pressure and hydraulic seal ring of height-adjusting bridge steel support hydraulic seal method, it is characterized in that: be the square-section seal ring, and, on internal diameter limit and the limit, lower end surface of square-section, by the corner cut mode, prune one jiao, form a unfilled corner; On the outer diameter side of seal ring square-section, in square-section, at least have a triangular groove simultaneously; By the lip direction that forms ，Chun limit, lip limit to remaining seal after the triangular groove had in square-section on the prune end surface side of a jiao and outer diameter side, radially, the basin inner edge in triangular groove and bearing forms the lip chamber, the lip chamber not with the high-pressure and hydraulic medium contact; Formed upper-end surface, limit, upper end by seal ring is attached on the trapeze cut side of the bearing piston base in spherical bearing, and the limit, lower end surface that the limit, lower end surface of a jiao of pruning forms is down uncovered.
4. high-pressure and hydraulic seal ring according to claim 3, is characterized in that: the short difference of the lip length of side of described seal ring.
5. high-pressure and hydraulic seal ring according to claim 3 is characterized in that: described seal ring be hole with or sealing for axle, seal ring is exoskeletal or with the seal ring of skeleton.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110214033 CN102410376B (en) | 2011-07-29 | 2011-07-29 | Hydraulic sealing method and sealing ring for injection height-adjusting bridge steel support |
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| CN 201110214033 CN102410376B (en) | 2011-07-29 | 2011-07-29 | Hydraulic sealing method and sealing ring for injection height-adjusting bridge steel support |
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| CN102410376A CN102410376A (en) | 2012-04-11 |
| CN102410376B true CN102410376B (en) | 2013-12-18 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466068A (en) * | 1991-06-13 | 1995-11-14 | Andrae; Hans P. | Articulated bearing for heavy loads |
| RU2122061C1 (en) * | 1998-03-24 | 1998-11-20 | Открытое акционерное общество "Мостотрест" | Supporting part of sleeve-type bridge |
| CN2591087Y (en) * | 2002-11-22 | 2003-12-10 | 中国路桥(集团)新津筑路机械厂 | Height-regulating Bearing |
| CN200988946Y (en) * | 2006-12-15 | 2007-12-12 | 武汉艾尔格桥梁新技术开发有限公司 | Clip ring type hydraulic tempering basin type height regulating support base |
| CN201040827Y (en) * | 2007-06-09 | 2008-03-26 | 衡水中铁建工程橡胶有限责任公司 | Self-cleaning anti-shocking steel support |
| CN201074299Y (en) * | 2007-07-02 | 2008-06-18 | 上海彭浦橡胶制品总厂 | Knock reducing-preventing ball-type bridle iron |
| CN201169746Y (en) * | 2008-03-31 | 2008-12-24 | 衡水宝力工程橡胶有限公司 | Ball type height-adjusting support |
| CN201648957U (en) * | 2010-04-30 | 2010-11-24 | 秦皇岛北方管业有限公司 | Bridge support adjusting structure |
| CN201809866U (en) * | 2010-09-28 | 2011-04-27 | 株洲时代新材料科技股份有限公司 | Sealing ring for bridge or building supporting seat |
-
2011
- 2011-07-29 CN CN 201110214033 patent/CN102410376B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466068A (en) * | 1991-06-13 | 1995-11-14 | Andrae; Hans P. | Articulated bearing for heavy loads |
| RU2122061C1 (en) * | 1998-03-24 | 1998-11-20 | Открытое акционерное общество "Мостотрест" | Supporting part of sleeve-type bridge |
| CN2591087Y (en) * | 2002-11-22 | 2003-12-10 | 中国路桥(集团)新津筑路机械厂 | Height-regulating Bearing |
| CN200988946Y (en) * | 2006-12-15 | 2007-12-12 | 武汉艾尔格桥梁新技术开发有限公司 | Clip ring type hydraulic tempering basin type height regulating support base |
| CN201040827Y (en) * | 2007-06-09 | 2008-03-26 | 衡水中铁建工程橡胶有限责任公司 | Self-cleaning anti-shocking steel support |
| CN201074299Y (en) * | 2007-07-02 | 2008-06-18 | 上海彭浦橡胶制品总厂 | Knock reducing-preventing ball-type bridle iron |
| CN201169746Y (en) * | 2008-03-31 | 2008-12-24 | 衡水宝力工程橡胶有限公司 | Ball type height-adjusting support |
| CN201648957U (en) * | 2010-04-30 | 2010-11-24 | 秦皇岛北方管业有限公司 | Bridge support adjusting structure |
| CN201809866U (en) * | 2010-09-28 | 2011-04-27 | 株洲时代新材料科技股份有限公司 | Sealing ring for bridge or building supporting seat |
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| CN102410376A (en) | 2012-04-11 |
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