CN102410376A - 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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- CN102410376A CN102410376A CN2011102140332A CN201110214033A CN102410376A CN 102410376 A CN102410376 A CN 102410376A CN 2011102140332 A CN2011102140332 A CN 2011102140332A CN 201110214033 A CN201110214033 A CN 201110214033A CN 102410376 A CN102410376 A CN 102410376A
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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; Be encapsulating method and the seal ring that the type bridge steel support is heightened in a kind of injection specifically; This kind encapsulating method and seal ring are a kind of unidirectional motive sealings of high-pressure and hydraulic of heightening the type bridge steel support that can realize injecting; Low to sealing configuration counterpart (hole, axle) processing request simultaneously, the package technique difficulty is low, extremely is convenient to encapsulating method and the seal ring assembled.
Background technique
The type bridge steel support is heightened in injection have been increased injection with respect to not being both of plain carbon steel bearing and has heightened structure; Be decomposed into benzvalene form structure, piston cylinder operator two macrostructures to the lower support plate of plain carbon steel bearing; With seal ring sealing, increase inlet again and just form and heighten structure between piston cylinder operator and the benzvalene form structure.Constituting these most critical parts of heightening structure is seal rings; Inject liquid bulking agent (polyurethane) when heightening at the realization bearing; The seal ring fitness for purpose realizes the dynamic hydraulic sealing in the scope that comprises 15-32 MPa, solidify (being generally 4-12 hour) until bulking agent.As obvious liquid bulking agent takes place reveal, then think seal failure, this just means that also the bearing injection heightens disabler.Therefore, the injectable effect of heightening the steel support seal ring is particularly crucial.
Injection height-adjustable supports encapsulating method mainly contains dual mode at present.A kind of is the structure that adopts like 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 a ball shaped steel bearing is exactly to carry all to be born by steel structure; Load-carrying properties are obvious more superior than neoprene bearing; As in ball shaped steel bearing, adopting the monoblock rubber pad to do sealing configuration, then offset the strong superiority of ball shaped steel bearing load-carrying properties.
Like the patent No. be: 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.The lower support plate (4) in the outside of vibration damper plate (6) is provided with a baffle ring (3), and the outer overlap joint of vibration damper plate (6) is on this baffle ring (3), and the vertical direction on the said baffle ring (3) is provided with and opens top fastening bolt (2), and is threaded with it.
Other type is to heighten the piston of steel support, bar, the cylinder structure that benzvalene form structure correspondence is regarded as common oil cylinder to injectable; And between piston and benzvalene form structure, adopt the specific hydraulic seal ring to seal; And on the piston of bearing or benzvalene form structure, excavate seal groove, the sealing of hydraulic seal circle 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 fit 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 common hydraulic seal circles such as Y-shaped ring or V-type circle; With regard to the hole with regard to seal ring; Surface roughness fitness for purpose Ra≤0.4 to hole wall needs precision grinding process, and cost is high, manufacturing efficiency is low.The hole all need form initial sealing at radially preparatory crush seal circle with Y-shaped ring or V-type circle in addition, and its lip limit is under free state; The aperture that maximum outside diameter can be mated big (can be considered interference fit); Assembling difficulty is big, and assembling technical ability requires high, and efficient is lower.In brief, it is high to heighten the cost that uses Y-shaped ring or V-type circle on the ball shaped steel bearing at injectable, and bearing manufacturing efficiency is low, is not desirable selection.
Like the patent No. be: 200820076682.4, denomination of invention is: the Chinese patent of ball-type height-adjustable supports discloses a kind of similar sealing means; Its major technique is characterized as: comprise upper bracket plate, ball-type steel scaleboard, middle steel scaleboard; The arranged outside of steel scaleboard has the steel basin in the middle of said, is provided with seal ring between middle steel scaleboard and the steel basin, has the hydraulic pressure hole on the steel basin; Pour in the hydraulic pressure hole through special tool and to heighten injecting, can carry out the measurement of bearing vertical bearing capacity and the lifting of bearing.
In sum, all there are certain deficiency in the encapsulating method and the device of existing injection height-adjustable supports, therefore necessary this are improved.
Summary of the invention
The technical problem that the present invention will solve is to the existing existing deficiency of ball shaped steel bearing of heightening; Propose a kind ofly to be fit to heighten that ball shaped steel bearing uses; Can bear high-pressure and hydraulic (comprising 15-32MPa) motive sealing; Low to the bearing structure processing request that is sealed and matched simultaneously, the mounting technology difficulty is low, and the 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, be with seal ring, and seal ring is at the vertical height of vertical thickness greater than piston (axle) bottom trapeze cut; 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); This moment, seal ring did not have stress deformation basically; Again bearing piston (axle) need further be installed to the basal surface position in bearing basin (hole); Promptly contact, make the seal ring extruding form preliminary sealing with basin (hole) formula structure; When injecting from inlet when heightening bulking agent,, comprise the piston (axle) in the bridge steel support in the bearing superstructure; Receive in the high pressure liquid pressure lifting process of (including lifting trend); At seal ring end face and radially inner side, receive high pressure liquid pressure and seal ring endogenetic process respectively, produce compressional deformation; Keep static relatively with bearing piston (axle), form the high pressure static seal; At the seal ring radial outside; Bulking agent through 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, and seal ring relatively upwards slides simultaneously, forms high pressure dynamic sealing at radial outside.
Heighten the seal ring of bridge steel support according to a kind of injection that said method proposed, be the square-section seal ring, and, prune one jiao, form a unfilled corner through the corner cut mode on the internal diameter limit and the limit, lower end surface of square-section; On the outer diameter side of seal ring square-section, in the square-section, have a triangular groove at least simultaneously; Constitute the lip limit by remaining seal behind the triangular groove that in the square-section, has on one jiao end surface side and the outer diameter side pruned; The lip direction on lip limit is radially; Basin in triangular groove and the bearing (hole) inner edge forms the lip chamber, and the lip chamber does not contact with the high-pressure and hydraulic medium; Be attached to by the formed upper-end surface, limit, upper end of seal ring on the trapeze cut side of piston (axle) bottom in the spherical bearing, the limit, lower end surface that one jiao the limit, lower end surface of pruning is constituted is down uncovered.
The invention has the advantages that:
1 seal ring and counterpart radially need not interference fit under original state and in the assembly process, the seal ring sealing is pressed through bearing gravity compressing seal ring in advance and realizes that 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 standard U type circle 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.
Description of drawings
Fig. 1 is an overall installation schematic representation of the present invention;
Fig. 2 is a unreinforced seal ring cross-section schematic representation of the present invention;
Fig. 3 is the present invention when installing, and does not receive bearing weight schematic representation;
After Fig. 4 is installation of the present invention, be out of shape by bearing weight, form the initial sealing schematic representation with axis hole;
Fig. 5 is under the present invention in working order, receives high pressure liquid pressure selfsealings schematic representation.
Embodiment
Further the present invention will be described below in conjunction with accompanying drawing and embodiment:
Can find out through accompanying drawing 1; 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, be with seal ring 3, and seal ring 3 is at the vertical height of vertical thickness greater than piston (axle) bottom trapeze cut 2; 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; This moment, seal ring 3 did not have stress deformation basically; Again bearing piston (axle) 1 is installed to as required the basal surface position of bearing basin (hole) 4; Promptly contact, make seal ring 3 extruding form preliminary sealing with basin (hole) formula structure; When injecting from inlet when heightening bulking agent,, comprise the piston (axle) 1 in the bridge steel support in the bearing superstructure; Receive in the high pressure liquid pressure lifting process of (including lifting trend); At seal ring 3 end faces and radially inner side, receive high pressure liquid pressure and seal ring endogenetic process respectively, produce compressional deformation; This moment, seal ring 3 kept static relatively with bearing piston (axle) 1, formed the high pressure static seal; At seal ring 3 radial outsides; Bulking agent through 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; Further extruding is closely connected with basin (hole) formula structure on long lip limit 5, and 3 pairs of seal ring phases are upwards slided simultaneously, form high pressure dynamic sealing at piston (axle) 1 radial outside.
The seal ring of heightening bridge steel support according to a kind of injection that said method proposed is shown in accompanying drawing 2, and seal ring 3 is the square-section seal ring, and on the internal diameter limit 9 and limit, lower end surface of square-section, prunes one jiao through the corner cut mode, forms a unfilled corner 6; On the outer diameter side of seal ring square-section, in the square-section, have a triangular groove 7 at least simultaneously; Constitute lip limit 8 by remaining seal behind the triangular groove that in the square-section, has on one jiao end surface side and the outer diameter side pruned; The lip direction on lip limit 8 is radially; Basin in triangular groove and the bearing (hole) inner edge forms the lip chamber, and the lip chamber does not contact with the high-pressure and hydraulic medium; Be attached to by the formed upper-end surface, limit, upper end of seal ring on the trapeze cut side of piston (axle) bottom in the spherical bearing, the limit, lower end surface that one jiao the limit, lower end surface of pruning is constituted is down uncovered.Described seal ring is through 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 that the hole is used or axle is used sealing, and seal ring is exoskeletal or has the seal ring of skeleton.
Can find out working principle of the present invention through accompanying drawing 3-5, as follows:
The technological form that 1 accompanying drawing 3-5 appears is that one-way sealing is used in the hole.Radially, seal ring comprises that basin (hole) formula structure and piston (axle) the formula structure in the spherical bearing do not need interference fit under original state and counterpart, 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 that stays on piston (axle) the formula structure.In the installation process, seal ring is in place prior to bearing piston (axle) formula structure, and this moment, seal ring did not have stress deformation basically, and bearing piston (axle) formula structure need further be in place, and promptly contacts with basin (hole) formula structure, and is 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 the spherical bearing, all push and form preliminary sealing, as shown in Figure 4.
4 when injecting from inlet when heightening bulking agent; Receive in the high pressure liquid pressure lifting process of (including lifting trend) in the bearing superstructure; At seal ring radially inner side and end face; Seal ring receives seal ring internal force and the effect of high-pressure and hydraulic power respectively, keeps static relatively with bearing piston (axle) formula structure, forms the high pressure static seal.At the seal ring radial outside; Bulking agent through in the 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, and seal ring relatively upwards slides simultaneously, forms high pressure dynamic sealing at radial outside.On the certificate, formed complete unidirectional motive sealing, as shown in Figure 5.
5 bearing heightened predetermined height after, stop to inject 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 when bridge is fully loaded and unloaded, can both heighten smoothly, 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 with installation process in, seal ring and counterpart need not interference fit, the lip chamber need not contact with hydraulic medium, as required select tape skeleton or be not with skeleton.
The present invention is through a kind of special Sealing, and seal ring and counterpart radially need not interference fit under original state and in the assembly process, and the seal ring sealing is pressed through bearing gravity compressing seal ring in advance and realizes that 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 standard U type circle 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.
Claims (5)
1. type bridge steel support hydraulic seal method is heightened in an injection; It is characterized in that: a trapeze cut is arranged at the bottom of the piston in bridge steel support; On trapeze cut, be with seal ring, and seal ring is at the vertical height of vertical thickness greater than the piston base trapeze cut; Bearing basin and piston adopt Spielpassung; At first seal ring is installed to the basal surface position of bearing basin prior to the bearing piston; This moment, seal ring did not have stress deformation basically; Again the bearing piston need further be installed to the basal surface position of bearing basin, promptly contact, make the seal ring extruding form preliminary sealing with the benzvalene form structure; When injecting from inlet when heightening bulking agent,, comprise the piston in the bridge steel support in the bearing superstructure; Receive in the process of high pressure liquid pressure lifting; At seal ring end face and radially inner side, receive high pressure liquid pressure and seal ring endogenetic process respectively, produce compressional deformation; Keep static relatively with the bearing piston, form the high pressure static seal; At the seal ring radial outside; Bulking agent through 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, and seal ring relatively upwards slides simultaneously, form high pressure dynamic sealing at radial outside.
2. type bridge steel support hydraulic seal method is heightened in said injection according to claim 1; It is characterized in that: shunk back in labiad oral cavity, the long lip of seal ring limit through utilizing hydraulic coupling; Along the lip edge direction power that is squeezed, with hole or the closely connected formation selfsealings of axle, the brachycheilia limit does not directly receive hydraulic coupling.
3. the high-pressure and hydraulic seal ring of type bridge steel support hydraulic seal method is heightened in said injection according to claim 1; It is characterized in that: be the square-section seal ring; And, prune one jiao through the corner cut mode on the internal diameter limit and the limit, lower end surface of square-section, form a unfilled corner; On the outer diameter side of seal ring square-section, in the square-section, have a triangular groove at least simultaneously; Constitute the lip limit by remaining seal behind the triangular groove that in the square-section, has on one jiao end surface side and the outer diameter side pruned, the lip direction on lip limit is radially, and the basin inner edge in triangular groove and the bearing forms the lip chamber, and the lip chamber does not contact with the high-pressure and hydraulic medium; Formed upper-end surface, limit, upper end by seal ring is attached on the trapeze cut side of the piston base in the spherical bearing, and the limit, lower end surface that one jiao the limit, lower end surface of pruning is constituted is down uncovered.
4. high-pressure and hydraulic seal ring according to claim 3 is characterized in that: the lip length of side of described seal ring is short different.
5. high-pressure and hydraulic seal ring according to claim 3 is characterized in that: described seal ring can be that the hole is used or axle is used sealing, and seal ring is exoskeletal or has the seal ring of skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN102410376A (en) | 2012-04-11 |
| CN102410376B CN102410376B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN102410376B (en) | 2013-12-18 |
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