CN103104270A - Shear type expansion anchor rod and extension application thereof - Google Patents
Shear type expansion anchor rod and extension application thereof Download PDFInfo
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- CN103104270A CN103104270A CN 201310052027 CN201310052027A CN103104270A CN 103104270 A CN103104270 A CN 103104270A CN 201310052027 CN201310052027 CN 201310052027 CN 201310052027 A CN201310052027 A CN 201310052027A CN 103104270 A CN103104270 A CN 103104270A
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Abstract
The invention provides a shear type expansion anchor rod which comprises a fixing part, a pushing part and a tightening part, wherein the fixing part is provided with an expansion part. The shear type expansion anchor rod is characterized in that the pushing part is matched with the fixing part, the pushing part and the fixing part can move along the coaxial direction of the axis of the fixing part, the expansion part is hinged with the top end portion of the fixing part, the lower end portion of the expansion part is provided with an inclined surface facing the pushing part, the top end portion of the pushing part can contact with the inclined surface of the lower end portion of the expansion part and pushes the expansion part along the inclined surface, the expansion part is stretched in a shear mode towards the outer side of the pushing part, and the tightening part is arranged at the lower end of the pushing part and can move in the coaxial direction of the axis of the pushing part. The shear type expansion anchor rod is simple and ingenious in structure, the expansion part is stretched in the shear mode, the stretched range is large, anchoring force is strong, and the shear type expansion anchor rod not only is used for surrounding rock support and protection, but also is widely suitable for anchoring or fixation of mines, tunnels, protection slops, foundation trenches, buildings and other engineering. Extension application comprises underpinnings for constructing the buildings, stand columns for highway sides, and the like, and safety, reliability and universal values of the shear type expansion anchor rod are achieved really.
Description
Technical field
The present invention relates to a kind of anchor pole in the anchoring field, specifically a kind of scissors expansion anchor rod, comprise expanding and use.
Background technology
In the project implementing process such as mine, tunnel, bank protection, foundation ditch, dam, with the loosening unstability layer of bolt anchorage, become a kind of application trend, academia is awfully hot door also, as having of patent documentation record that occur on the market or existing:
1. expansion tubing anchor pole, the shell class that rises anchor pole, this type of anchor pole due to self fault of construction cause the opening degree of rock bolt head expanding end and the dynamics after rigidity and distending limited, so can not realize expanding reliably fixed or sealed with anchoring matrix elastic region or stable state strong layer, uplift resistance is poor, and suspention and clamping force are not strong;
2. in order to make up defects, grouting class anchor pole has appearred again, annotate compression swelling class anchor pole, this type of anchor pole is by some loosening or debris layer being conspired to create one and by slurry blind and the overall friction that increases anchor pole and anchoring matrix hole wall, realize so-called " compound beam " or " arching ", this type of way is is sheerly shirkd the heavy work and choose the light, the suspention foundation on country rock top and the dependence foundation of lateral wall (foundation is exactly matrix elastic region or stable state strong layer) have been fallen into disuse, even so, namely enable to look to so-called " compound beam " or " arching " generation effect, to become flexible so or debris layer string all-in-one-piece clamping force still require the opening degree of anchor pole expanding end and rigidity strong and powerful, otherwise the nut of anchor pole afterbody can't tighten up them, anchor pole can only play the effect of " pin ", the what is called of so making out " compound beam " or " arching " are somewhat self-deceiving,
3. in order to solve the solidification problem of rock bolt head, people have developed again the bonding adhesive method, it is evident that, " taking root " problem that attempt looks to the thing of bonding adhesive class to solve anchor pole is very dangerous (taking root is exactly the solid and reliable fixed or sealed of rock bolt head and matrix elastic region or stable state strong layer), in the time of particularly maybe must embodying the anchoring effect (bonding adhesive is to need curing time) that gets instant result or bonding adhesive to the harshness of using environment (as unclean in moist or soft sand stone layer or hole cleaning) etc. situation for the suspention on country rock top or permanent anchoring, bonding adhesive is that the no one is foreseeable for the negative reaction that the difference of application and service life occurs still more,
For make up can not " take root " or " taking root " unreliable, people have taked again by increasing bolt consistency, allowing weight or the displacement force of loosening layer share on more anchor pole, so just greatly increased labour intensity, operating efficiency and construction speed have been reduced, integrated cost greatly rises, but " taking root " problem of anchor pole does not still solve, just some " pins " have been beaten in so-called " compound beam " or " arching " zone at most more, cures the symptoms, not the disease real the genus, make bad also can disturbance or destroy the stabilized zone of periphery.
In sum, the inventor thinks, no matter adopt which kind of anchor pole to carry out anchoring, the rock bolt head expansion arc when work must be strong and powerful, solid and reliable " taking root " in anchoring matrix elastic region or the stable state strong layer, be only like this anchoring truly, could allow the people feel at ease, otherwise be exactly stall off or cover up the facts, become blind exactly with shiring the heavy work aning choose the light and turn from side to side, will bury potential safety hazard, after all in short, be exactly that the anchor pole technology is not advanced, the security reliability in anchoring field and economic and practical be people's will to the greatest extent just.
Summary of the invention
For above-mentioned present situation, the invention provides a kind of scissors expansion anchor rod, it be number of patent application in inventor invention be 201210269582.4 and PCT/CN2012/079504 and the patent No. be structure innovation and application innovation on 201220376629.1 shear expansion bolt basis, it is shear expansion bolt " counterpart ", and it should be anchoring field expectation thing for a long time.
The present invention includes fixture and impeller and tightener with expansion piece, described impeller coordinates with fixture and can be along the axis coaxle of fixture to movement; The top ends of described expansion piece and fixture is hinged, the bottom of this expansion piece has an inclined-plane towards impeller, the impeller top ends can contact with the inclined-plane of expansion piece bottom, and along the slope driving expansion piece of expansion piece bottom, expansion piece is strutted as scissors to the outside of impeller; Described tightener be enclosed within impeller the lower end and can be along the axis coaxle of impeller to movement.
Described fixture is a lug nut bearing, has two gripper shoes that are oppositely arranged on this lug nut bearing, and gripper shoe top arranges hinge hole; Described expansion piece is two expansion oplates, and these two expansion oplates merging are inlaid between two gripper shoes of lug nut bearing, and hinged with gripper shoe; Described impeller is a screw rod with lug nut bearing coupling, and the top ends of described screw rod contact with two expansion oplate bottoms, and rotary screw can make its inclined-plane two expansion oplates of direct promotion along the expansion oplate bottom strut laterally respectively; Described tightener is a nut and one supporting supporting plate with it, and supporting plate and nut sleeve be in the lower end of screw rod, the supporting plate limit section warpage that makes progress, and a cancave cambered surface is upwards swelled in the supporting plate bottom, and a convex globoidal is upwards swelled on nut top, and the curvature of two cambered surfaces is identical; Certainly, locking decorative pattern or tooth can also be set respectively on cancave cambered surface and convex globoidal.
Two gripper shoe root arranged outside limited steps that are oppositely arranged that can be on described lug nut bearing, expansion oplate its inclined-plane, bottom when not strutted lean against on this limited step, to limit its inside rotation; Can also limited post be set at the inwall of described two gripper shoes, with the riding position of control expansion oplate, thus convenient the use.
Certainly, expansion piece of the present invention can be also an expansion oplate, and this expansion oplate is inlaid between two gripper shoes of lug nut bearing, can set up be used to the pad of regulating described expansion oplate thickness between expansion oplate and gripper shoe, and hinged with gripper shoe; Also can lean on wall with respect to a side setting of expansion oplate at described lug nut bearing, when described screw rod promotes this expansion oplate and struts laterally, should support described screw rod by wall, screw rod is axially promoted all the time, screw rod stress equalization and do not produce bending in promoting the process of expansion oplate along the lug nut bearing.
In order to reuse, can pilot hole be set in the upper end of two expansion oplates, install return spring between pilot hole, draw the expansion oplate that is strutted in by return spring, realize that the scissors expansion anchor rod is detachable; In order to make anchoring effect of the present invention better, particularly for anchoring or locking on weak stratum or closely knit soil, can two expansion oplates are hinged to expansion oplate with another respectively, thereby the expansion that forms the larger degree of depth is fixed or locking, comprise can repeatedly connect between expansion oplate and expansion oplate hinged, the end installing return spring of expansion oplate that can also be after series connection is hinged.
In order to make the anchoring operation even more ideal, it is lighter that screw rod promotes expansion oplate, and the top ends of described screw rod is designed to cambered surface; Further, also ratchet can be set on this cambered surface, the corner angle interlock by ratchet and expansion oplate realizes self-locking; The direction of rotation when direction of set ratchet point should advance with screw rod is opposite; From the economy of processing, cambered surface part in top can also be processed separately, then by inlaying client link on pin and screw rod, the pin of inlaying here partly is connected with cambered surface, adopting cold heading technique is very economical; Certainly, when selecting nonmetals to make screw rod, its top cambered surface part still can be processed separately and by inlaying client link on pin and screw rod; For the needs of different anchoring purposes, anchoring requirement or purposes, the lower end of described screw rod can be interior side or outer square toes, can be also interior hexagonal or outer-hexagonal head, or suspension ring, or hook, or additional loose joint is set, or meets grouting and annotate the instructions for use of pressing.
In order to be fit to the anchoring of soft anchoring matrix, can be at the hinged a kind of movable supporting leg that can increase stress surface of the anchored end of described expansion piece; In order to make expansion piece have with the stable state strong layer effect that elasticity is fixed or lock after scissors strut, the anchored end (section) of expansion piece can be made the shape with elastic buffer effect, and can be to its heat treatment (for the stable state strong layer, the locking effect that the elastic expansion specific rigidity expands is better), can also on this elasticity anchoring face, anti-skid design or tooth be set, or fixed flexible anti-pressure and abrasion-proof material; Shape with elastic buffer effect described here, make recessed the inclined-plane of described expansion piece bottom or convex globoidal exactly, the anchoring face of described anchored end (section) is made the recessed or convex globoidal of involute, the inclined-plane is consistent with the recessed and protruding direction of anchoring face, certainly, also the anchoring section of expansion piece can be made the body of rod or the plate shape with elastic buffer effect.
Can be by zooming in or out two spacings between gripper shoe, the thickness that reaches the expansion oplate in it with setting-in matches, here it is to be noted, when dwindling two spacings between gripper shoe, its spacing can less than with the screw rod external diameter of its coupling, at this moment should with interfering the part of screw rod to remove, make screw rod precession smoothly; Can also be by lengthening or shorten the length of two gripper shoes, the length that reaches the expansion oplate in it with setting-in matches, and the distance of the hinge hole of the two ends that it is pointed out that the expansion oplate length direction here on it can be equal, can be also unequal.
In order to satisfy the needs of grouting anchoring, can be at the inner shaft of described screw rod to grout hole be set, in the screw rod periphery, some slurry outlets are set; When punching grouting anchoring up, can also be on screw rod a kind of elasticity slurry seal of segmented sheathing back-up ring, in case that the excessive appearance integral body of slurry deadweight stays the upper end is blank, set up a seal cover simultaneously in the lower end of screw rod; In addition, can also be at the fixed notes compression swelling in screw rod stage casing pipe, notes compression swelling pipe of the present invention is aobvious " dumbbell " shape in the distribution of annotating the expansion power after pressing, can become flexible layer by Automatic-clamping like this, in order to realize this purpose, the tube wall of annotating compression swelling pipe two ends can be done slightly thin or strip fold slightly.
More convenient in order to use, omit punch out step in advance, drill bit or a chisel head can be set in the upper end of described fixture, so scissors expansion anchor rod of the present invention directly can be pierced in the anchoring matrix by self-cutting or directly squeezes in the anchoring matrix; In order to be fit to more high-intensity anchoring requirement, can make two gripper shoes more firmly firm at the fixed gap bridge in the upper end of two gripper shoes, this gap bridge can be taper, also can be arc or flat shape; Certainly, described gap bridge is to integrate described drill bit or chisel head function, comprises the self tapping thread being set in head and the side of fixture; It is that arc one end is the expansion oplate of pointed shape that setting-in expansion piece in it can be transformed to an end, and the expansion oplate of this kind shape has extremely strong arch and enters and lock the resistance to plucking ability.
Expanding application facet, for example the present invention can be made the huge specification (pile) that building or structure are used; Can also be with the fence upright of the present invention as speedway and high-speed railway; The present invention can also be made small-sized or miniature specification to satisfy the use of furniture, electrical equipment, ornaments, medical treatment; The base for post that the present invention can also be used as (post, bar, towers) such as bridge, electric power, communication, probes uses; Can also be with a plurality of the present invention's parallel connections or the application that is together in series; In a word, can derive plurality of specifications or pattern to satisfy multi-purpose needs by principle of the present invention.
simple and ingenious structure of the present invention, easily processing and manufacturing, easy to use and reliable, low processing cost, easily realize industrialization, strut as scissors by expansion oplate, strut amplitude large, anchored force is extremely strong, a kind of principle, multiple pattern, required precision to the anchoring hole is low, can self-cutting or self tapping or hammering, can reuse, can also realize grouting and annotate and press, the most important thing is that it has thoroughly solved " taking root " problem of anchor pole, it not only is used for the surrounding rock supporting of mining, also be widely applicable for the tunnel, bank protection, foundation ditch, anchoring or reinforcing and the highway of loosening unstability layer in the engineerings such as dam, railway, bridge, water conservancy, communication, military project, building, construct, the steel structure, anchoring in the engineerings such as finishing or fixing, also comprise expanding and use, really realized the safe and reliable and general value of scissors expansion anchor rods.
Description of drawings
Fig. 1 is positive facade structural representation of the present invention.
Fig. 2 is side elevation structural representation of the present invention.
Fig. 3 is the A-A generalized section.
Fig. 4 is the structural representation under scissors softened state of the present invention.
Fig. 5 is that cambered surface of the present invention end is divided by inlaying pin and is inlaid in schematic diagram on screw rod.
Fig. 6 is that cambered surface of the present invention end is divided and the schematic diagram of inlaying pin and being connected.
Fig. 7 is the positive facade structural representation that gap bridge is set of the present invention.
Fig. 8 is the side elevation structural representation that gap bridge is set of the present invention.
Fig. 9 is the structural representation under the scissors softened state that arranges after gap bridge of the present invention.
In figure: cambered surface 4-lug nut bearing 5-screw rod 6-grout hole 7-supporting plate 8-convex globoidal 9-nut 10-screw rod lower end, 1-expansion oplate 2-riveting axle 3-screw rod upper end square toes 11-cancave cambered surface 12-slurry outlet 13-limited step 14-gap bridge 15-one end is that arc one end is that the expansion oplate 16-of pointed shape inlays pin 17-limited post.
The specific embodiment
Be described further below in conjunction with accompanying drawing and concrete enforcement:
Referring to accompanying drawing, fixture of the present invention is a lug nut bearing (4), and this lug nut bearing has two gripper shoes that are oppositely arranged, and gripper shoe top arranges hinge hole; Described expansion piece is two expansion oplates (1), and these two expansion oplates merging are inlaid between two gripper shoes of lug nut bearing, and hinged with gripper shoe; Described impeller is a screw rod (5) that mates with the lug nut bearing, the top ends cambered surface (3) of described screw rod contacts with the bottom of two expansion oplates, and rotary screw can make its inclined-plane along the bottom of expansion oplate directly promote two expansion oplates and strut laterally respectively; Certainly, the screw thread on described screw rod can be full thread, but also only at screw rod two, screw thread is set.
Two gripper shoe root arranged outside limited steps (13) that are oppositely arranged that can be on described lug nut bearing (4), expansion oplate (1) its inclined-plane, bottom when not strutted lean against on this limited step, to limit its inside rotation.
Certainly, expansion piece of the present invention can be also an expansion oplate (1), this expansion oplate is inlaid between two gripper shoes of lug nut bearing (4), can set up be used to the pad of regulating described expansion oplate thickness between expansion oplate and gripper shoe, and hinged with gripper shoe.
Be inlaid in when single expansion oplate between two gripper shoes of lug nut bearing, and hinged with gripper shoe, can lean on wall with respect to a side setting of expansion oplate (1) at described lug nut bearing (4), when this single expansion oplate of described screw rod (5) promotion struts laterally, should support described screw rod by wall, screw rod is axially promoted all the time, screw rod stress equalization and do not produce bending in promoting the process of expansion oplate along the lug nut bearing.
In order to reuse, can pilot hole be set in the upper end of expansion oplate (1), install return spring between the pilot hole of two expansion oplates, draw the expansion oplate that is strutted in by return spring, realize that the scissors expansion anchor rod is detachable.
In order to make anchoring effect of the present invention better, particularly for anchoring or locking on weak stratum or closely knit soil, the upper end of described expansion oplate is horn shape and is provided with pilot hole, the pilot hole of two expansion oplates is hinged to expansion oplate with another respectively, thereby the expansion that forms the larger degree of depth is fixed or locking, certainly, can repeatedly connect between expansion oplate and expansion oplate hinged, the end installing return spring of expansion oplate that can also be after series connection is hinged.
In order to make expansion anchoring operation even more ideal, it is lighter that screw rod promotes expansion oplate, and the top ends of described screw rod (5) is designed to cambered surface (3); Further, also ratchet can be set on this cambered surface, the corner angle interlock by ratchet and expansion oplate realizes self-locking; The direction of rotation when direction of set ratchet point should advance with screw rod is opposite; Economy from processing, top cambered surface (3) part can also be processed separately, by inlaying client link on pin (16) and screw rod, the pin (16) of inlaying here is connected with the part of cambered surface (3) again, and adopting cold heading technique is very economical; Certainly, when selecting nonmetals to make screw rods (5), its top cambered surface part still can be processed separately and by inlaying client link on pin and screw rod; For the needs of different anchoring purposes, anchoring requirement or purposes, the lower end of described screw rod (5) can be interior side or outer square toes, can be also interior hexagonal or outer-hexagonal head, or suspension ring, or hook, or additional loose joint is set, or meets grouting and annotate the instructions for use of pressing.
in order to be fit to the anchoring of soft anchoring matrix, can be at the hinged a kind of movable supporting leg that can increase stress surface of the anchored end of described expansion piece, in order to make expansion piece have with the stable state strong layer effect that elasticity is fixed or lock after scissors strut, the anchored end (section) of expansion piece can be made the shape with elastic buffer effect, and can be to its heat treatment (for the stable state strong layer, the locking effect that the elastic expansion specific rigidity expands is better), can also on this elasticity anchoring face, anti-skid design or tooth be set, or fixed flexible anti-pressure and abrasion-proof material, the cross curvature of its elasticity anchoring face should be close with the curvature of anchoring hole wall, shape with elastic buffer effect described here, make recessed the inclined-plane of described expansion piece bottom or convex globoidal exactly, the anchoring face of described anchored end (section) is made the recessed or convex globoidal of involute, the inclined-plane is consistent with the recessed and protruding direction of anchoring face, certainly, also the anchored end (section) of expansion piece can be made the body of rod or the plate shape with elastic buffer effect, what need here to further illustrate is, described have an elastic buffer effect, when referring to that on the one hand impeller advances, the power that expansion piece struts is that elasticity increases progressively, so just can not make the stable state strong layer impaired because of excessively strong expansion force, the duty after anchoring of referring on the other hand to expand be also be in flexible, like this when anchorage zone occurs to wriggle, common elastic buffer by expansion piece and tightener, realized the self adaptation of anchor pole and anchoring matrix, and anchor pole and anchor pole and the dynamic equilibrium of (anchor system) each other of anchoring matrix, make anchoring effect be in optimum state, simultaneously can also give warning in advance and avoid occuring fragility and cave in.
when assembling or use, for the purpose of aspiring after perfection, should be noted that: left side expansion oplate (1) counter-clockwise direction is revolved and is put and lean against on limited step (13), right side expansion oplate (1) clockwise direction revolves to be put and leans against on limited step (13), the benefit of putting like this is when clockwise precession screw rod, it is smooth that the contacting of inclined-plane, the lower end property at parts of edges and corners of the top ends cambered surface of screw rod and two expansion oplates promotes, for this smooth when putting and promoting that guarantees expansion oplate, the inwall of two gripper shoes that are oppositely arranged that can be on described lug nut bearing (4) arranges limited post (17), so just do not need to consider how to have put expansion oplate, and then facilitated use, certainly, if the screw thread on screw rod is left-hand thread (counter-clockwise precession screw rod), corresponding adjustment also should be made in the position of its limited post.
Can be by zooming in or out two spacings between gripper shoe, the thickness that reaches the expansion oplate in it with setting-in matches, here it is to be noted, when dwindling two spacings between gripper shoe, its spacing can less than with the external diameter of the screw rod (5) of its coupling, at this moment should with interfering the part of screw rod to remove, make screw rod precession smoothly; Can also be by lengthening or shorten the length of two gripper shoes, the length that reaches the expansion oplate in it with setting-in matches, and the distance of the hinge hole of the two ends that it is pointed out that the expansion oplate length direction here on it can be equal, can be also unequal.
In order to satisfy the needs of grouting anchoring, can be at the inner shaft of described screw rod (5) to grout hole (6) be set, in the screw rod periphery, some slurry outlets (12) are set; When punching grouting anchoring up, can also be on screw rod a kind of elasticity slurry seal of segmented sheathing back-up ring, so the weight of slurry can be shared on each back-up ring, in case that slurry integral body stays the upper end is blank, set up a seal cover simultaneously in the lower end of screw rod.
More convenient in order to use, omit punch out step in advance, drill bit or a chisel head can be set in the upper end of described fixture, so scissors expansion anchor rod of the present invention directly can be pierced in the anchoring matrix by self-cutting or directly squeezes in the anchoring matrix; In order to be fit to more high-intensity anchoring, can make two gripper shoes more firmly firm at the fixed gap bridge in the upper end of two gripper shoes (14), this gap bridge can be taper, also can be arc or flat shape; Certainly, described gap bridge is to integrate described drill bit or chisel head function, comprises the self tapping thread being set in head and the side of fixture; Can be with setting-in the expansion piece in it to be transformed to an end be that arc one end is the expansion oplate (15) of pointed shape, the expansion oplate of this kind shape has extremely strong arch and enters and lock the resistance to plucking ability.
described tightener is a nut (9) and one supporting supporting plate (7) with it, supporting plate and nut sleeve are in the lower end of described screw rod (5), the limit section of the supporting plate warpage that makes progress, the degree of its warpage should meet the requirement of elastic buffer, a cancave cambered surface (11) upwards swells in the bottom of supporting plate, a convex globoidal (8) upwards swells on nut (9) top, the curvature of two cambered surfaces is identical, so, when the anchoring matrix surface slightly during out of plumb anchoring hole, after supporting plate is tightened up by nut, its supporting plate periphery also can be close to the anchoring matrix surface and make it stressed evenly, be exactly that the supporting plate limit section warpage that makes progress has the elastic buffer effect and can bring out the best in each other with the elastic buffer effect of described expansion oplate in addition, realize the dynamic equilibrium of anchor system of the present invention, if implement grouting, can also play good sealing function, then to have be exactly that the supporting plate bottom upwards is embedded in the entrance of anchoring hole in the part just coincide ground of protuberance, anchor pole effective between two parties, the slurry during the grouting anchoring can be around the evenly distribution of anchor pole periphery, certainly, locking decorative pattern or tooth can also be set respectively on described cancave cambered surface and convex globoidal, in addition, can also be at the fixed notes compression swelling in screw rod stage casing pipe, notes compression swelling pipe of the present invention is aobvious " dumbbell " shape in the distribution of annotating the expansion power after pressing, can become flexible layer by Automatic-clamping like this, in order to realize this purpose, the tube wall of annotating compression swelling pipe two ends can be done slightly thin or strip fold slightly.
Expanding application facet, the present invention can be made the huge specification (pile) that building or structure are used, rigidity and aperture after the expansion oplate scissors of this specification strut are very large, and then produce huge uplift resistance and compressive resistance; Can also be with the fence upright of the present invention as speedway and high-speed railway, the inventor notices the manufacturing of existing column and the original backwardness of method of installation in place, the present invention is used as column, the hole that only need to reserve several installation guardrails on anchor pole gets final product, directly pierce in the anchoring matrix or directly squeeze in the anchoring matrix by self-cutting during construction, save time and save trouble, effect is remarkable; The present invention can also be made small-sized or miniature specification to satisfy the use of furniture, electrical equipment, ornaments, light fixture, medical treatment; The base for post that the present invention can also be used as bridge, electric power, communication, probe (post, bar, tower) uses; Can also be with a plurality of the present invention's parallel connections or the application that is together in series, the in parallel or series connection here builds by support frame, and support frame can be any shape; In a word, can derive plurality of specifications or pattern to satisfy multi-purpose needs by principle of the present invention, as space is limited, just not give unnecessary details one by one here.
It is worth mentioning that: Combination application in any case, no matter adopt what material and technique manufacturing product of the present invention, all must do tension, shearing resistance and resistance to plucking check to it, in actual applications, should be according to mechanics parameter of the present invention, can not be only according to the anchoring experience of traditional anchor pole or the thing on existing textbook, because anchor pole performance of the present invention or anchoring effect and range of application have been not traditional things.
Claims (10)
1. a scissors expansion anchor rod, comprise fixture and impeller and tightener with expansion piece, it is characterized in that: described impeller coordinates with fixture and can be along the axis coaxle of fixture to movement; The top ends of described expansion piece and fixture is hinged, the bottom of this expansion piece has an inclined-plane towards impeller, the impeller top ends can contact and along this slope driving expansion piece, expansion piece be strutted to the outside of impeller as scissors with the inclined-plane of expansion piece bottom; Described tightener be enclosed within impeller the lower end and can be along the axis coaxle of impeller to movement.
2. scissors expansion anchor rod according to claim 1, be further characterized in that: described fixture is a lug nut bearing, has two gripper shoes that are oppositely arranged on this lug nut bearing, gripper shoe top arranges hinge hole; Described expansion piece is two expansion oplates, and these two expansion oplates merging are inlaid between two gripper shoes of lug nut bearing, and hinged with gripper shoe; Described impeller is a screw rod with lug nut bearing coupling, and the top ends of described screw rod contact with two expansion oplate bottoms, and rotary screw can make its inclined-plane two expansion oplates of direct promotion along the expansion oplate bottom strut laterally respectively; Described tightener is a nut and one supporting supporting plate with it, supporting plate and nut sleeve be in the lower end of screw rod, the supporting plate limit section warpage that makes progress, and a cancave cambered surface upwards swells for the supporting plate bottom, a convex globoidal is upwards swelled on nut top, and cancave cambered surface is identical with the curvature of convex globoidal.
3. scissors expansion anchor rod according to claim 2, be further characterized in that: two gripper shoe root arranged outside limited steps that are oppositely arranged that can be on described lug nut bearing, expansion oplate its inclined-plane, bottom when not strutted leans against on this limited step, to limit its inside rotation; Can also limited post be set at the inwall of described two gripper shoes, to control the orientation of expansion oplate.
4. scissors expansion anchor rod according to claim 1 and 2, be further characterized in that: described expansion piece can be also an expansion oplate, this expansion oplate is inlaid between two gripper shoes of lug nut bearing, can set up between expansion oplate and gripper shoe for the pad of regulating expansion oplate thickness, and hinged with gripper shoe; Be inlaid in when single expansion oplate between two gripper shoes of lug nut bearing, and hinged with gripper shoe, can lean on wall with respect to a side setting of expansion oplate at described lug nut bearing, when described screw rod promotes this expansion oplate and struts laterally, should support described screw rod by wall, screw rod is axially promoted all the time, screw rod stress equalization and do not produce bending in promoting the process of expansion oplate along the lug nut bearing.
5. scissors expansion anchor rod according to claim 2, be further characterized in that: the upper end of described expansion oplate is provided with pilot hole, install return spring between the pilot hole of two expansion oplates, draw the expansion oplate that is strutted by return spring in, realize that the scissors expansion anchor rod is detachable; In order to be fit to anchoring or locking on weak stratum or closely knit soil, the upper end of described expansion oplate is horn shape and is provided with pilot hole, and the pilot hole of two expansion oplates is hinged to expansion oplate with another respectively, thereby forms the fixed or locking of the expansion of the larger degree of depth; Certainly, can repeatedly connect between expansion oplate and expansion oplate hinged, end installing return spring that can also be after series connection is hinged.
6. scissors expansion anchor rod according to claim 1 and 2, be further characterized in that: described impeller is a screw rod, and its upper end is cambered surface; Also can on this cambered surface, ratchet be set, the corner angle interlock by ratchet and expansion oplate realizes self-locking; The direction of rotation when direction of set ratchet point should advance with screw rod is opposite; Described cambered surface part can also be processed separately, then by inlaying client link on pin and screw rod; For the needs of different anchoring purposes, anchoring requirement or purposes, the lower end of described screw rod can be interior side or outer square toes, can be also interior hexagonal or outer-hexagonal head, or suspension ring, or hook, or additional loose joint is set, or meets grouting and annotate the instructions for use of pressing.
7. scissors expansion anchor rod according to claim 1 and 2, be further characterized in that: more convenient in order to use, omit punch out step in advance, drill bit or a chisel head can be set in the upper end of described fixture, so scissors expansion anchor rod of the present invention directly can be pierced in the anchoring matrix by self-cutting or directly squeezes in the anchoring matrix; In order to be fit to more high-intensity anchoring requirement, can make two gripper shoes more firmly firm at the fixed gap bridge in the upper end of two gripper shoes, this gap bridge can be taper, also can be arc or flat shape; Certainly, described gap bridge can integrate described drill bit or chisel head function, comprises the self tapping thread being set in head and the side of fixture; It is that arc one end is the expansion oplate of pointed shape that its interior expansion piece of setting-in can be transformed to an end; Can be at the inner shaft of described screw rod to grout hole be set, at the some slurry outlets of screw rod arranged outside, to satisfy the needs of grouting anchoring; When punching grouting anchoring up, can also be on screw rod a kind of elasticity slurry seal of segmented sheathing back-up ring, set up a seal cover simultaneously in the lower end of screw rod; In addition, can also be at the fixed notes compression swelling in screw rod stage casing pipe, notes compression swelling pipe of the present invention is aobvious " dumbbell " shape in the distribution of annotating the expansion power after pressing, can become flexible layer by Automatic-clamping like this, in order to realize this purpose, the tube wall of annotating compression swelling pipe two ends can be done slightly thin or strip fold slightly.
8. scissors expansion anchor rod according to claim 2, be further characterized in that: can be by zooming in or out two spacings between gripper shoe, the thickness that reaches the expansion oplate in it with setting-in matches, here it is to be noted, when dwindling two spacings between gripper shoe, its spacing can less than with the screw rod external diameter of its coupling, at this moment should with interfering the part of screw rod to remove, make screw rod precession smoothly; Can also be by lengthening or shorten the length of two gripper shoes, the length that reaches the expansion oplate in it with setting-in matches, and the distance of the hinge hole of the two ends that it is pointed out that the expansion oplate length direction here on it can be equal, can be also unequal.
9. scissors expansion anchor rod according to claim 1, its feature also in: as required, can be at the hinged a kind of movable supporting leg that can increase anchoring face of the anchored end of described expansion piece; In order to make expansion piece have the fixed effect of elasticity with the stable state strong layer after scissors strut, the anchored end (section) of expansion piece can be made the shape with elastic buffer effect also can be to its heat treatment, can also on this elasticity anchoring face, anti-skid design or tooth be set, or fixed flexible anti-pressure and abrasion-proof material.
10. according to claim 1,2,3,4,5,6,7,8 or 9 described scissors expansion anchor rods, be further characterized in that: the present invention can be expanded application, the huge specification (pile) of using as the present invention being made building or structure; The present invention can also be made small-sized or miniature specification to satisfy the use of panel beating, furniture, electrical equipment, light fixture, ornaments, medical treatment; Can also be with the fence upright of the present invention as speedway and high-speed railway; The base for post that the present invention can also be used as bridge, electric power, communication, highway probe (post, bar, tower) uses; Can also be with a plurality of the present invention's parallel connections or the application that is together in series, the in parallel or series connection here builds by support frame, and support frame can be any shape; In a word, can derive plurality of specifications or pattern to satisfy multi-purpose needs by principle of the present invention.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310052027 CN103104270A (en) | 2013-02-19 | 2013-02-19 | Shear type expansion anchor rod and extension application thereof |
| CN201410014781.XA CN103696790B (en) | 2013-02-19 | 2014-01-13 | Scissors expansion anchor rod and application thereof |
| CN201420019169.7U CN203655328U (en) | 2013-02-19 | 2014-01-13 | Shear type expansion anchor bolt |
| PCT/CN2014/000096 WO2014127680A1 (en) | 2013-02-19 | 2014-01-24 | Scissor-type expansion bolt and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310052027 CN103104270A (en) | 2013-02-19 | 2013-02-19 | Shear type expansion anchor rod and extension application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104270A true CN103104270A (en) | 2013-05-15 |
Family
ID=48312435
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310052027 Pending CN103104270A (en) | 2013-02-19 | 2013-02-19 | Shear type expansion anchor rod and extension application thereof |
| CN201410014781.XA Active CN103696790B (en) | 2013-02-19 | 2014-01-13 | Scissors expansion anchor rod and application thereof |
| CN201420019169.7U Expired - Fee Related CN203655328U (en) | 2013-02-19 | 2014-01-13 | Shear type expansion anchor bolt |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410014781.XA Active CN103696790B (en) | 2013-02-19 | 2014-01-13 | Scissors expansion anchor rod and application thereof |
| CN201420019169.7U Expired - Fee Related CN203655328U (en) | 2013-02-19 | 2014-01-13 | Shear type expansion anchor bolt |
Country Status (1)
| Country | Link |
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| CN (3) | CN103104270A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN203655328U (en) | 2014-06-18 |
| CN103696790B (en) | 2016-04-20 |
| CN103696790A (en) | 2014-04-02 |
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| WD01 | Invention patent application deemed withdrawn after publication |