CN204851300U - Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof - Google Patents
Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof Download PDFInfo
- Publication number
- CN204851300U CN204851300U CN201520256963.8U CN201520256963U CN204851300U CN 204851300 U CN204851300 U CN 204851300U CN 201520256963 U CN201520256963 U CN 201520256963U CN 204851300 U CN204851300 U CN 204851300U
- Authority
- CN
- China
- Prior art keywords
- steel strand
- movable sleeve
- lockset
- prestress wire
- squeeze
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof, weighing apparatus hinder and make a concession the prestress wire anchor rope including crowded movable sleeve and the damping tube cut, and this tool to lock includes at least three locking plate, the locking plate compresses tightly between the stretch -draw end of the crowded steel strand wires hole pore wall of cutting the movable sleeve and steel strand wires, with limited along circumference in proper order steel strand wires for crowded displacement of cutting the movable sleeve. Compare with traditional tool to lock, this kind is exclusively used in the weighing apparatus and hinders the tool to lock of making a concession the prestress wire anchor rope and saved the catch body, directly compresses tightly the locking plate and cuts between movable sleeve and the steel strand wires in crowding to simplified the weighing apparatus and hindered the overall structure who makes a concession the prestress wire anchor rope, made it compacter reasonable.
Description
Technical field
The utility model relates to the technical field of lockset structures of prestress wire anchor cable, and particularly prestress wire anchor cable and lockset thereof are made a concession in the resistance of one weighing apparatus.
Background technology
Prestress wire anchor cable is full coal anchor cable hole top board, the one of region of high stress breaking roof commonly uses suspension device, utilize the effective aspect ratio parameter of prestress wire, keep the deformability of supporting rock (coal) body and the allowable transformation of anchor cable hole, make prestress wire anchor cable continue stressed supporting rock (coal) body in maximum, force (breaking load) tolerance band.
As shown in Figure 1, prestress wire anchor cable comprises steel strand 1, pallet 2 and lockset, wherein, steel strand 1 bear pulling force effect, the Anchor Agents 9 such as its one end resin explosive roll are fixed in the anchor cable hole O of rock mass S, solidify post-tensioning steel strand 1 at Anchor Agent 9, lockset compresses pallet 2 and pins the stretching end of steel strand 1.
In practice, because prestress wire 1 anchor cable elongation rate is less, (prestress wire elongation rate L commonly used by anchor cable
0>=500 ~ 610mm), namely the modulus of elasticity of steel strand material own is extremely limited, therefore before anchor cable hole O arrives far away its allowable transformation scope, consuming completely with regard to modulus of elasticity of steel strand 1, steel strand 1 enter disrumpent feelings state, lose support capacity, cause rock (coal) body to collapse.
Many research experiments are had to show, on impacts such as the releases of the rock manifested with deformation state (coal) body stress, dynamically aobvious pressure, by effectively controlling (permission) its distortion, can its stress of release by a relatively large margin and pressure, make the pressure-bearing support materials such as prestress wire, supporting pressure-bearing within its breaking load, forms effective support state.This just requires the pressure-bearing supporting products such as prestress wire anchor cable, outside its modulus of elasticity, has and " deformability " that effectively control (permission) rock (coal) body deformability and adapt.
For this reason, those skilled in the art have developed a kind of weighing apparatus resistance and make a concession prestress wire anchor cable, as shown in Figure 2, it has set up damper tube 6 on traditional prestress wire anchor cable basis, squeeze and cut movable sleeve 7 and position-limit mechanism, wherein, position-limit mechanism is arranged at damper tube 6, the maximum displacement of movable sleeve 7 relative to damper tube 6 is cut to limit to squeeze, its intensity is enough to bear the shearing force being greater than steel strand 1 breaking load, be fixedly connected with pallet 2 in the anchor cable hole that damper tube 6 is plugged in rock mass S, squeeze and cut movable sleeve 7 and be plugged in damper tube 6, the anchored end of steel strand 1 through squeeze cut the steel strand hole of movable sleeve 7 after be anchored in anchor cable hole by Anchor Agent 9, lockset locks the tension force end of steel strand 1 and offsets with the crowded rear end face cutting movable sleeve 7, movable sleeve 7 pre-pressing is cut in the damper portion of damper tube 6 by squeezing with the pre-tensioning by steel strand 1, when the tensile force of steel strand 1 increases to the resistance being enough to overcome damper portion, squeeze cut movable sleeve 7 under tensile force effect squeeze cut damper portion and move to position-limit mechanism along damper tube 6.
This prestress wire anchor cable relies on the damper portion formation damping action of squeezing and cutting in movable sleeve extruding, cutting damper tube, move ahead under prestress wire traction, keep the deformability of supporting rock (coal) body, continuous and effective supporting rock (coal) body, adapts to permission (design) distortion that tunnel is larger.
As shown in Figure 2, this weighing apparatus of making a concession hinders the lockset that prestress wire anchor cable still employs traditional prestress wire anchor cable, this lockset comprises lock ring body 3 and three locking plates 4, wherein, lock ring body 3 offers conical steel strand hole, during locking, three locking plates are circumferentially pressed between steel strand hole hole wall and steel strand 1 successively, so that steel strand 1 stretching end is locked in lock ring body 3, and make lock ring body 3 cut movable sleeve 7 and offset with squeezing, cut movable sleeve 7 be pressed in the damper portion of damper tube 6 to be squeezed by the tensile force of steel strand 1.
In addition, the steel strand 1 of the corresponding a kind of specification of a kind of lock ring body 3 of specification in conventional lock, such as, when steel strand 1 diameter is 17.8mm, in lockset, the external diameter of lock ring body 3 is 52mm, and when steel strand 1 diameter increases to 21.6mm, correspondingly the external diameter of lock ring body 3 increases to 68mm.It can thus be appreciated that also there is the problem of poor universality in conventional lock.
Although conventional lock is applicable to make a concession weighing apparatus resistance prestress wire anchor cable, but those skilled in the art think to research and develop and are a kind ofly exclusively used in the lockset making a concession weighing apparatus resistance prestress wire anchor cable, with simplify make a concession weighing apparatus resistance prestress wire anchor cable overall structure, reduce its manufacturing cost.
Utility model content
To achieve these goals, the utility model provides a kind of and is exclusively used in the lockset that prestress wire anchor cable is made a concession in weighing apparatus resistance.On this basis, the utility model also provides a kind of weighing apparatus resistance comprising this lockset to make a concession prestress wire anchor cable.
The lockset making a concession prestress wire anchor cable for resistance of weighing provided by the utility model, described weighing apparatus resistance yielding prestress wire anchor cable comprises squeezing cuts movable sleeve and damper tube, this lockset comprises at least three locking plates, described locking plate is circumferentially pressed in squeeze successively to be cut between the steel strand hole hole wall of movable sleeve and the stretching end of steel strand, squeezes the displacement of cutting movable sleeve to limit described steel strand relative to described.
Compared with conventional lock, this lockset being exclusively used in weighing apparatus resistance yielding prestress wire anchor cable eliminates lock ring body, locking plate is directly pressed in squeeze and cuts between movable sleeve and steel strand, thus simplify the overall structure that prestress wire anchor cable is made a concession in weighing apparatus resistance, make it compact and reasonable more.
In addition, squeeze in this programme and cut movable sleeve pre-pressing in damper tube, when rock mass is after the factor generation deformation of internal stresses release, dynamically aobvious pressure, the tensile force of steel strand increases, squeeze cut be actively set on this tensile force effect under overcome damper tube damping and move vertically relative to it, cut until crowded under being actively set on tensile force and damping action and again reach stress balance, meanwhile, the damper portion of extruding, cutting damper tube.
That is, no matter squeeze and cut movable sleeve is that its periphery wall offsets with the internal perisporium of the damper portion of damper tube all the time and fit under static or motion state, cuts formation between movable sleeve and damper tube be similar to the assembly relation of interference fit to make to squeeze.
It can thus be appreciated that, cut under movable sleeve and damper tube coordinate the effect mentioning lock ring body in conventional lock jointly by squeezing in the lockset that this programme provides, and both comprehensive strengths are far longer than the intensity of lock ring body, therefore, a kind of specification crowded cut movable sleeve can with the steel strand of plurality of specifications with the use of, thus drastically increase the versatility of lockset.
Preferably, described steel strand hole is conical bore, and the external surface of described locking plate is the circular cone cambered surface suitable with described steel strand hole, and its inner surface is the cylinder cambered surface suitable with described steel strand.
Preferably, the zigzag that the inner surface of described locking plate is specially vertically and/or circumference extends successively.
Preferably, three described locking plates relative to described steel strand axis circumferentially 120 ° uniform.
Preferably, also comprise elastic collar, described elastic collar is flush-mounted in the draw-in groove of described locking plate external surface, to limit the axial relative displacement between described locking plate.
Except above-mentioned lockset, the utility model also provides a kind of weighing apparatus resistance to make a concession prestress wire anchor cable, comprise steel strand, squeeze and cut movable sleeve and lockset, the stretching end of described steel strand is locked in described squeezing by described lockset and cuts in the steel strand hole of movable sleeve, and described lockset is specially lockset as above.
Because this lockset has above-mentioned technique effect, therefore, the weighing apparatus resistance yielding prestress wire anchor cable comprising this lockset has same technique effect, so do not repeat them here herein.
Accompanying drawing explanation
Fig. 1 shows the structural representation under traditional prestress wire anchor cable duty;
Fig. 2 shows a kind of weighing apparatus resistance and makes a concession prestress wire anchor cable structure schematic diagram;
Fig. 3 shows the structural representation that a kind of detailed description of the invention of prestress wire anchor cable is made a concession in weighing apparatus resistance provided by the utility model
Fig. 4 shows the structural representation squeezing in Fig. 3 and cut movable sleeve;
Fig. 5 shows the A-A of Fig. 4 to sectional structure schematic diagram;
Fig. 6 shows the structural representation of lock sheet groups in Fig. 3;
Fig. 7 shows the side-looking structural representation of lock sheet groups shown in Fig. 3;
Fig. 8 shows the structure for amplifying view at I place in Fig. 6.
Fig. 9 show the utility model the structural representation of the another kind of detailed description of the invention of prestress wire anchor cable is provided;
Figure 10 shows the structural representation of internal thread damper tube in Fig. 9;
Figure 11 shows the side-looking structural representation of the damper tube of internal thread shown in Fig. 9;
Figure 12 shows the structure for amplifying view at I place in Figure 10;
Figure 13 shows the structural representation of another internal thread damper tube;
Figure 14 shows the C of the damper tube of internal thread shown in Figure 13 to structural representation.
Corresponding relation in Fig. 1 to Figure 14 between Reference numeral and all parts title:
1 steel strand, 2 pallets, 3 lock ring bodies, 4 locking plates, 5 elastic collars, 6 damper tubes, 61 damping rings, 62 contraction flow regions, 7 squeeze and cut movable sleeve, 71 steel strand holes, 72 gathering sills, 8 stop screws, 9 Anchor Agents, S rock mass, O anchor cable hole.
Detailed description of the invention
Core object of the present utility model is, provides a kind of and is exclusively used in the lockset that prestress wire anchor cable is made a concession in weighing apparatus resistance, to simplify the overall structure that prestress wire anchor cable is made a concession in weighing apparatus resistance, make it compact and reasonable more.On this basis, the utility model also provides a kind of weighing apparatus resistance comprising this lockset to make a concession prestress wire anchor cable.
Without loss of generality, next, in conjunction with Figure of description, by two kinds of detailed description of the invention, the structure and working principle that prestress wire anchor cable is made a concession in weighing apparatus resistance provided by the utility model is illustrated.It should be noted that, for the ease of understanding, detailed description of the invention part and background technology part adopt identical Reference numeral to same assembly.
Refer to Fig. 3, the figure shows the structural representation that a kind of detailed description of the invention of prestress wire anchor cable is made a concession in weighing apparatus resistance provided by the utility model.
As shown in Figure 3, weighing apparatus resistance provided in the present embodiment is made a concession prestress wire anchor cable and is comprised steel strand 1, pallet 2, lockset, damper tube 6, squeeze and cut movable sleeve 7 and position-limit mechanism, wherein, position-limit mechanism is arranged at damper tube 6, the maximum displacement of movable sleeve 7 relative to damper tube 6 is cut to limit to squeeze, its intensity is enough to bear the shearing force being greater than steel strand 1 breaking load, be fixedly connected with pallet 2 in the anchor cable hole that damper tube 6 is plugged in rock mass S, squeeze and cut movable sleeve 7 and be plugged in damper tube 6, the anchored end of steel strand 1 through squeeze cut the steel strand hole 71 of movable sleeve 7 after be anchored in anchor cable hole by Anchor Agent 9, lockset locks the tension force end of steel strand 1 and offsets with the crowded rear end face cutting movable sleeve 7, movable sleeve 7 pre-pressing is cut in the damper portion of damper tube 6 by squeezing with the pre-tensioning by steel strand 1, when the tensile force of steel strand 1 increases to the resistance being enough to overcome damper portion, squeeze cut movable sleeve 7 under tensile force effect squeeze cut damper portion and move to position-limit mechanism along damper tube 6.
Particularly, composition graphs 4 is known, and in the first detailed description of the invention, damper portion is specially the damping ring 61 that several are arranged at intervals at damper tube 6 internal perisporium vertically successively; Crowded movable sleeve 7 of cutting comprises guide section B and squeezes the section of cutting A.Wherein, squeeze the multidiameter that the section of cutting A is specially the unidirectional gradual change of the diameter of axle, point on stretching end direction by the anchored end of steel strand 1, the diameter of axle of multidiameter increases progressively, and its minimum diameter of axle is greater than the internal diameter of damping ring 61, its maximum diameter of axle is less than damper tube 6 internal perisporium diameter, and the diameter of axle of guide section B is less than the internal diameter of damping ring 61.Be appreciated that to squeeze and cut object that movable sleeve 7 arranges guide section B and be to provide good guiding for it moves relative to damper tube 6, ensure mobile happy property.For the ease of understanding the concrete structure squeezing and cut movable sleeve 7 better, please also refer to Fig. 5.
Crowded movable sleeve 7 of cutting is imported after in damper tube 6 by guide section B, small axle diameter end face again by squeezing the section of cutting A under the effect of steel strand 1 pre-tensioning is pressed in damping ring 61, prestress wire 1 anchor cable is made to form initial supporting state, now rock mass S puts on by damper tube 6 that to squeeze tensile force equal and opposite in direction, the direction of cutting the resistance of movable sleeve 7 and prestress wire 1 contrary, also namely squeeze and cut movable sleeve 7 and be in stress balance state, static relative to damper tube 6.
Along with service time increases, because of internal stresses release, dynamically show the factor rock mass S such as pressure will deform, the active force of the distortion formation of rock mass S will put on to squeeze by damper tube 6 cuts movable sleeve 7, in other words, namely rock mass S puts on and squeezes the resistance cutting movable sleeve 7 and be greater than the tensile force that steel strand 1 put on it, cause squeezing and cut movable sleeve 7 stress balance state and be broken, now will there is elastic deformation in steel strand 1, also namely increase tensile force again to make to squeeze and cut movable sleeve 7 and reach stress balance, when the tensile force that steel strand 1 elastic deformation causes exceeds the supporting capacity of damper tube 6 damping ring 61, the tensile force of steel strand 1 will drive to squeeze and cut movable sleeve 7 and squeeze and cut damping ring 61, and move a certain distance along damper tube 6, cut movable sleeve 7 again reach stress balance to squeezing.
Owing to causing rock mass S distortion to be a progressive formation because of internal stresses release, the dynamically factor of aobvious pressure, therefore, in this programme, interval is provided with multiple damping ring 61 successively vertically, cut movable sleeve 7 and squeeze to cut when squeezing under the effect of steel strand 1 tensile force and destroy after current damping ring 61, squeeze and cut movable sleeve 7 and stopped until it reaches stress balance again by a rear damping ring 61, in other words, squeeze and cut movable sleeve 7 and do relative to damper tube 6 intermittent mobile under the effect of steel strand 1 tensile force, with meet rock mass S be out of shape gradually and required and stage make a concession demand.
It should be noted that, movable sleeve 7 is cut relative in damper tube 6 moving process in order to prevent from squeezing, occur lacking resistance and making it because deadweight is to anchored end free-falling, the problem causing the effect of prestress wire 1 cable bolting to be lost efficacy occurs, the interval squeezed the crowded section of the cutting A length of cutting movable sleeve 7 and be at least greater than adjacent two damping rings 61 is limited further in this programme, with make to squeeze cut movable sleeve 7 squeeze cut last damping ring 61 after be at once subject to after the balanced resistance of a damping ring 61, prevent it from sailing because of sky and cause cable bolting disabler, to improve prestress anchorage cable job security and reliability.
In addition, in this programme squeeze cut movable sleeve 7 under the effect of steel strand 1 tensile force squeeze cut damping ring 61, well imagine, squeeze and cut movable sleeve 7 and damper tube 6 and need to adopt different hardness material or implement different heat treatment technique to identical material, to make both hardness property of there are differences, thus make to squeeze and cut movable sleeve 7 and can squeeze the damping ring 61 of cutting damper tube 6 and relative to generation displacement under external load function, and then realize the deformability function of prestress wire 1 anchor cable.
Particularly, in this programme, the steel pipe of damper tube 6 to be hardness be HRC15 ~ 40, squeezes and cuts the 40Cr etc. that movable sleeve 7 is specially hardness HRC50 ~ 70.Certainly; meet squeeze cut movable sleeve 7 squeeze under external load function cut damper tube 6 damping ring 61 function, processing and assembly technology requirement basis on; squeeze in this programme and cut movable sleeve 7 and damper tube 6 and be not limited in the material and hardness range that preferably adopt in this programme; that is, squeeze and cut movable sleeve 7 and damper tube 6 and adopt when differing from material and hardness in this programme and all fall in protection domain of the present utility model.
Further, as previously mentioned, in this programme, crowded movable sleeve 7 of cutting is specially the multidiameter increased progressively by the diameter of axle on anchored end sensing stretching end direction, and its height (for greatest axis radius and minimum axle semidiameter) squeezing the section of cutting A is less than the height (for damping ring 61 is relative to the radical length of damper tube 6 internal perisporium) of damping ring 61.Particularly, in this programme, the height of damping ring 61 is 1.0mm ~ 2.0mm, and squeezing the crowded section of the cutting height cutting movable sleeve 7 is 0.7mm ~ 1mm.For the ease of understanding the concrete structure squeezing and cut movable sleeve 7 better, please also refer to Fig. 4 and Fig. 5, wherein, Fig. 4 shows the structural representation squeezing in Fig. 3 and cut movable sleeve, and Fig. 5 shows the A-A of Fig. 4 to sectional structure schematic diagram.
This programme adopts the crowded of multidiameter structure to cut movable sleeve 7, and multiple points that are namely divided into vertically by the crowded crowded section of the cutting A cutting movable sleeve 7 are squeezed the sections of cutting, and multiple points of height summations of squeezing the sections of cutting are squeeze the height of the section of cutting A.Setting like this, crowded movable sleeve 7 of cutting is cut damping ring 61 is crowded one by one by the multiple points of crowded sections of cutting under the effect of steel strand 1 tensile force, reduce to squeeze the shearing force of cutting needed for damper portion, prestress wire 1 anchor cable can be made to make yielding to the load change that rock mass S is deformed on a small quantity, that is when steel strand 1 deform cause its comparatively small deformation amount time, squeeze and cut movable sleeve 7 and can respond fast and move to anchored end along damper tube 6, to make rock mass S when the internal strain of allowable transformation scope, the elongation that between twice stress balance state, steel strand 1 elastic deformation causes can be reduced, thus increase the yielding length of prestress wire 1 anchor cable.
Certainly, cut on basis that damping ring 61 function of damper tube 6, processing and assembly technology require meeting to squeeze, squeeze the concrete structure cutting movable sleeve 7 and be not limited in above-mentioned multidiameter structure, that is, crowded movable sleeve 7 of cutting also can be one section of constant axle of the diameter of axle or other equivalent distressed structures.
Further, squeeze the diameter of axle equal difference change of cutting the crowded section of the cutting A of movable sleeve 7, also namely adjacent two points of diameter of axle differences of squeezing the section of cutting are equal, setting like this, can ensure that each point of crowded section of cutting is substantially equal with the contact area of damping ring 61, comparatively balanced resistance can be formed crowded cutting when movable sleeve 7 moves along damper tube 6, thus make the yielding process of prestress wire 1 anchor cable keep continuity.
Further, as shown in Figure 4 and Figure 5, squeeze the periphery wall cutting movable sleeve 7 and also offer at least two axially directed grooves 72 arranged relative to its axisymmetrical, the groove depth of this gathering sill 72 is greater than the height of damping ring 61, and the groove depth of gathering sill 72 refers to the vertical distance of bottom land to notch herein.
Squeeze and cut movable sleeve 7 and move relative to damper tube 6 under the effect of steel strand 1 tensile force, damping ring 61 is cut in meanwhile extruding, and its gathering sill 72 and have neither part nor lot in squeeze cut process, therefore, region corresponding with this gathering sill 72 on damping ring 61 is protruded formed raised strip portion by squeezed region of cutting, and this lug boss embeds in gathering sill 72 and forms guide frame.
This programme utilizes to squeeze and cuts movable sleeve 7 and squeeze under external load function and cut the characteristic of the damping ring 61 of damper tube 6, and by cutting movable sleeve 7 and offer axially directed groove 72 squeezing, achieve the guide frame squeezing and cut movable sleeve 7 cleverly, novel structure is simple.
Squeeze cut movable sleeve 7 gathering sill 72 except there is guide effect, also by increasing and decreasing the quantity of gathering sill 72, adjust to squeeze and cut movable sleeve 7 and move suffered damping relative to damper tube, adjustment principle makes increase or reduces the contact area of squeezing and cutting the crowded section of cutting of movable sleeve 7 and the damping ring 61 of damper tube 6, the quantity of contact area size and gathering sill 72 is inversely proportional to, also namely when gathering sill 72 groove width is constant, along with increasing of gathering sill 72 quantity squeezes the damping ring 61 cutting the crowded section of cutting of movable sleeve 7 and damper tube 6 contact area is less between the two, resistance is less.
Continue known see Fig. 3, in this detailed description of the invention, position-limit mechanism is specially two stop screws 8 that relative damping pipe 6 axisymmetrical is arranged, stretch in pipe in stop screw 8 installing hole that stop screw 8 is threadedly connected to the tube wall of damper tube 6, be appreciated that, as long as stop screw 8 length stretched in pipe meets backstop and squeezes and cut movable sleeve 7 and deviate from, and its intensity is enough to bear the axial shearing force being greater than prestress wire 1 breaking load, even if steel strand 1 can be met like this when rupturing because its tensile force reaches its breaking load, squeeze and cut movable sleeve 7 and also must not rush more stop screw 8 and deviate from damper tube 6.Be appreciated that in this programme, stop screw 8 does not limit and 2, namely illustrates, on the basis meeting limit function, processing and assembly technology requirement, stop screw 8 also can be any amount that 3 or 4 etc. differ from this programme.
In addition, position-limit mechanism is not limited to aforesaid stop screw 8 structure, meeting on limit function basis, also can for being riveted on the limiting rivet of damper tube 6 tube wall, or on damper tube 6 internal perisporium, be welded to connect intensity be greater than to squeeze and cut the limit damping ring 61 of movable sleeve 7, certain limit damping ring 61 is enough to bear with the bonding strength of damper tube 6 the axial shearing force being greater than prestress wire 1 breaking load.
As shown in Figure 3, pallet 2 is the middle square plate offering through hole, and pallet 2 is sheathed on damper tube 6 periphery wall and two-sided welding connects with it, and also namely the both ends of the surface of pallet 2 are all welded to connect with the periphery wall of damper tube 6.Because pallet 2 is for accepting rock mass S pressure and being passed to damper tube 6, therefore, pallet 2 and damper tube 6 weld strength, rigidity requirement meet the breaking load of prestress wire 1.Certainly, meet on the breaking load basis of prestress wire 11 at pallet 2 and prop bonding strength and rigidity, the connected mode that both also can adopt other this areas conventional.
As previously mentioned, lockset locks the stretching end of steel strand 1 and offsets with the crowded rear end face cutting movable sleeve 7, and lockset is under tensile force effect, lock steel strand 1 stretching end.Next, in conjunction with figure and figure of Figure of description, describe concrete structure and the working mechanism thereof of lockset in detail.
Fig. 3, Fig. 6 to Fig. 8 in conjunction with Figure of description are known, and lockset comprises three locking plates 4, and in radial section, the shape of each locking plate 4 is circular arc ring, and the external surface of each locking plate 4 is circular cone cambered surface, and its inner surface is cylinder cambered surface.The outline of the locking plate after the split of three locking plates 44 groups is the taper seat suitable with squeezing the conical steel strand hole 71 of cutting movable sleeve 7, its steel strand 1 hole is cylindrical steel twisted wire hole 71 and its diameter is less than steel strand 1 external diameter.
During installation, three locking plates 4 are circumferentially pressed between steel strand hole 71 hole wall and steel strand 1 successively, cut movable sleeve 7 relative displacement between the two to limit steel strand 1 and to squeeze, be namely locked and cut in movable sleeve 7 in squeezing.
Compared with conventional lock, this lockset being exclusively used in weighing apparatus resistance yielding prestress wire 1 anchor cable eliminates lock ring body, locking plate 4 is directly pressed in squeeze and cuts between movable sleeve 7 and steel strand 1, thus simplify the overall structure that prestress wire 1 anchor cable is made a concession in weighing apparatus resistance, make it compact and reasonable more.
In addition, squeeze in this programme and cut movable sleeve 7 pre-pressing in damper tube 6, when rock mass S is after the factor generation deformation of internal stresses release, dynamically aobvious pressure, the tensile force of steel strand 1 increases, squeeze and cut movable sleeve 7 and under this tensile force effect, overcome damper tube 6 damping move vertically relative to it, cut movable sleeve 7 until crowded and again reach stress balance under tensile force and damping action, meanwhile, the damper portion of extruding, cutting damper tube 6.
That is, no matter squeeze and cut movable sleeve 7 is that its periphery wall offsets with the internal perisporium of the damper portion of damper tube 6 all the time and fit under static or motion state, cuts formation between movable sleeve 7 and damper tube 6 be similar to the assembly relation of interference fit to make to squeeze.
It can thus be appreciated that, cut under movable sleeve 7 and damper tube 6 jointly coordinate and mention the effect of lock ring body in conventional lock by squeezing in the lockset that this programme provides, and both comprehensive strengths are far longer than the intensity of lock ring body, therefore, a kind of specification crowded cut movable sleeve 7 can with the steel strand 1 of plurality of specifications with the use of, thus drastically increase the versatility of lockset.
In addition, it should be noted that, in this programme three locking plates 4 relative to steel strand 1 axis circumferentially 120 ° uniform, so arrange, steel strand 1 can be made at circumferential stress equalization, ensure that the reliability that lockset locks and safety.Be appreciated that meet with crowded cut movable sleeve 7 coordinate lock steel strand function, processing and assembly technology requirement time, in lockset, the quantity of locking plate can be any number differing from three such as four, five or six.
Further, tapered steel twisted wire 1 hole and lock sheet groups suitable is with it adopted in this detailed description of the invention, locking plate 4 is pressed on steel strand 1 squeezing to cut under movable sleeve 7 puts on frictional force between both fitting faces and positive pressure, ensure that locking reliability and safety.
Be appreciated that, on the basis meeting lock function, processing and assembly technology requirement, squeeze steel strand 1 hole of cutting movable sleeve 7 and also can be cylindrical hole, the outline of certain locking plate 4 groups is correspondingly adjusted to the suitable face of cylinder with it, or other structures that existing lockset adopts.
Continue known see Fig. 6 and Fig. 7, the inner surface of locking plate 4 is specially the zigzag structure extended along the axial and circumferential directions, setting like this, can increase the frictional force between locking plate 4 and steel strand 1 fitting face, thus further increases the locking reliability of latching force, raising lockset.Certainly, the inner surface of locking plate 4 also can be only vertically or circumferential single direction extend zigzag structure.
Further, as shown in Figure 8, lockset also comprises elastic collar 5, pre-steel strand of locking plate 4 pre-determined bit 1 and after squeezing and cutting the relevant position of movable sleeve 7, again elastic collar 5 is flush-mounted in the draw-in groove of locking plate 4 external surface, locking plate 4 is pressed in steel strand 1 finally by external applied load and squeezes and cut between movable sleeve 7.
Axial relative shift between locking plate 4 can be limited by setting up elastic collar 5, three locking plates 4 basic synchronization under external load function can be made to move, to ensure to squeeze the object of cutting movable sleeve and the setting of steel strand 1 almost coaxial.
Except above-mentioned detailed description of the invention, the utility model also provides weighing apparatus resistance to make a concession another detailed description of the invention of prestress wire anchor cable, next, in conjunction with Fig. 9 to Figure 12 of Figure of description, describes its concrete structure in detail.It should be noted that, it is identical with last detailed description of the invention that prestress wire anchor cable other modular constructions except damper tube 6 are made a concession in weighing apparatus resistance provided in the present embodiment, those skilled in the art can be direct and beyond all doubt in conjunction with foregoing teachings the structure and working principle of other assemblies of understanding, so only described in detail damper tube 6 structure at this herein.
As shown in Figure 9, in the second detailed description of the invention, damper tube 6 is specially riffled tube, preferred high-pressure boiler internal-thread seamless steel pipe, and its internal thread is equivalent to damper portion, and damper tube 6 material hardness is HRC15 ~ 40.
Equally, crowded movable sleeve 7 of cutting is imported after in damper tube 6 by guide section, small axle diameter end face again by squeezing the section of cutting under the effect of steel strand 1 pre-tensioning is pressed in the internal thread end face of screwed pipe, prestress wire 1 anchor cable is made to form initial supporting state, now rock mass S puts on by damper tube 6 that to squeeze tensile force equal and opposite in direction, the direction of cutting the resistance of movable sleeve 7 and prestress wire 1 contrary, also namely squeeze and cut movable sleeve 7 and be in stress balance state, squeeze that to cut movable sleeve 7 static relative to damper tube 6.
Along with service time increases, because of internal stresses release, dynamically the factor rock mass S of aobvious pressure will deform, the deflection of rock mass S will put on to squeeze by damper tube 6 with power form cuts movable sleeve 7, in other words, namely rock mass S puts on and squeezes the power of cutting movable sleeve 7 and be greater than the tensile force that steel strand 1 put on it, cause squeezing and cut movable sleeve 7 stress balance state and be broken, now will there is elastic deformation in steel strand 1, also namely increase tensile force again to make to squeeze and cut movable sleeve 7 and reach stress balance, when the tensile force that steel strand 1 elastic deformation causes exceeds the supporting capacity of damper tube 6 internal thread, the tensile force of steel strand 1 will drive to squeeze and cut movable sleeve 7 and squeeze and cut internal thread, and move a certain distance along damper tube 6, cut movable sleeve 7 again reach stress balance to squeezing.
Owing to causing rock mass S distortion to be a progressive formation because of internal stresses release, the dynamically factor of aobvious pressure, therefore, riffled tube is adopted in this programme, internal thread due to riffled tube is spiral extension, squeeze and cut movable sleeve 7 relative in damper tube 6 moving process, can ensure to squeeze and cut movable sleeve 7 and squeeze in real time and cut internal thread, cut movable sleeve 7 to make damper tube 6 form balanced resistance to squeezing.
Compared with last detailed description of the invention, rear one detailed description of the invention adopt inner thread steel pipe as damper tube 6, it is advantageous that following some, be respectively:
1, the commercially available existing product of inner thread steel pipe, can purchase according to the actual requirements, without the need to die sinking processing, and low cost of manufacture;
2, in inner thread steel pipe internal thread as damper portion, crowded movable sleeve 7 of cutting can be pressed in Bottom of Thread region along helical structure by squeezing the iron filings cutting generation relative in its moving process, prevent iron filings to cut movable sleeve 7 in the Dampening regions of internal thread deposition form additional friction to squeezing, reduce and make a concession effect;
3, due to internal thread helicoidal structure, squeeze the crowded end surface of cutting cutting movable sleeve 7 and coordinate with inclined-plane, both contacts area are little, suitably can reduce the crowded power of cutting of squeezing and cutting described in internal thread, correspondingly improve yielding ability.
Equally, the crowded periphery wall cutting movable sleeve 7 coordinated with this riffled tube also offers at least two and arranges and the gathering sill 72 extended vertically relative to its axisymmetrical, the groove depth of this gathering sill 72 is greater than the height of internal thread, and the groove depth of gathering sill 72 refers to the vertical distance of bottom land to notch herein.
Squeeze and cut movable sleeve 7 and move relative to damper tube 6 under the effect of steel strand 1 tensile force, internal thread is cut in meanwhile extruding, and its gathering sill 72 and have neither part nor lot in squeeze cut process, therefore, region corresponding with this gathering sill 72 on internal thread is protruded formed raised strip portion by squeezed region of cutting, and this lug boss to embed in gathering sill 72 and coordinates with it and forms guide frame.
This programme utilizes to squeeze and cuts movable sleeve 7 and squeeze under external load function and cut the characteristic of the internal thread of damper tube 6, and by cutting movable sleeve 7 and offer axially directed groove 72 squeezing, achieve the guide frame squeezing and cut movable sleeve 7 cleverly, novel structure is simple.
Squeeze cut movable sleeve 7 gathering sill 72 except there is guide effect, also by increasing and decreasing the quantity of gathering sill 72, or increase or reduce the groove width (referring to the vertical distance between two cell walls) of gathering sill 72, adjusting to squeeze and cut movable sleeve 7 and move suffered damping relative to damper tube.
Damping adjustment principle realizes by increasing or reducing crowded contact area of cutting the crowded section of the cutting A of movable sleeve 7 and the internal thread of damper tube 6, be appreciated that, both contact area sizes and the quantity of gathering sill 72 or the groove width of gathering sill 72 are inversely proportional to, also namely when the groove width of gathering sill 72 is constant, along with increasing of gathering sill 72 quantity squeezes the internal thread cutting the crowded section of cutting of movable sleeve 7 and damper tube 6 contact area is less between the two, resistance is less; When gathering sill 72 quantity is certain, along with the increase of gathering sill 72 groove width, contact area is less between the two to squeeze the internal thread cutting the crowded section of cutting of movable sleeve 7 and damper tube 6, and resistance is less.
It should be noted that, as shown in Figure 9, in this detailed description of the invention, the position-limit mechanism of damper tube still adopts stop screw 8, particularly, two stop screws 8 to be threaded tube wall relative to damper tube axisymmetrical, that is, have employed the position-limit mechanism the same with last detailed description of the invention in this detailed description of the invention.
Equally, meeting on limit function basis, also can for being riveted on the limiting rivet of damper tube 6 tube wall, or on damper tube 6 internal perisporium, be welded to connect intensity be greater than to squeeze and cut the limit damping ring 61 of movable sleeve 7, certain limit damping ring 61 is enough to bear with the bonding strength of damper tube 6 the axial shearing force being greater than prestress wire 1 breaking load.
Or known in conjunction with Figure 13 and Figure 14, position-limit mechanism is inwardly extruded near anchored end port section tubular wall by damper tube 6 to form contraction section E, and the reentrant diameter D of contraction section E is greater than steel strand 1 external diameter, so that steel strand 1 are relative to damper tube 6 free-extension.
Compared with employing stop screw 8 mode, this position-limit mechanism is the contraction section E utilizing damper tube 6 self-characteristic to be formed by punching press, and structure is simple, novel.
Particularly, it is uniform relative to 120 °, damper tube axis that damper tube 6 tube wall extrudes formation three contraction flow regions 62, three contraction flow regions 62 in pipe, and the shape of each contraction flow region 62 is arc bending in pipe.
In preferred version, contraction flow region 62 adopts arc, makes the contraction flow region 62 of same circumferential tube wall and non-constricted portion by smooth surface transition, can effectively reduce to form stress because of Sheet Metal Forming Technology and concentrate, and makes position-limit mechanism (have higher impact resistance.
Certainly, realize on the basis of limit function and processing technology requirement satisfied by forming contraction section to punching press tube wall in pipe, contraction section also can be tube wall all overall inside punching presses or extruded.
The foregoing is only preferred embodiment of the present utility model, do not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (6)
1. the lockset of prestress wire anchor cable is made a concession for resistance of weighing, described weighing apparatus resistance yielding prestress wire anchor cable comprises squeezing cuts movable sleeve (7) and damper tube (6), it is characterized in that, described lockset comprises at least three locking plates (4), it is characterized in that, between steel strand hole (71) hole wall that described locking plate (4) is circumferentially pressed in successively and the stretching end of steel strand (1), squeeze the displacement of cutting movable sleeve (7) to limit described steel strand (1) relative to described.
2. lockset as claimed in claim 1, it is characterized in that, described steel strand hole (71) is conical bore, the external surface of described locking plate (4) is the circular cone cambered surface suitable with described steel strand hole (71), and its inner surface is the cylinder cambered surface suitable with described steel strand (1).
3. lockset as claimed in claim 1, is characterized in that, the zigzag that inner surface is specially vertically and/or circumference extends successively of described locking plate (4).
4. lockset as claimed in claim 1, is characterized in that, three described locking plates (4) relative to described steel strand (1) axis circumferentially 120 ° uniform.
5. the lockset according to any one of Claims 1-4, it is characterized in that, also comprise elastic collar (5), described elastic collar (5) is flush-mounted in the draw-in groove of described locking plate (4) external surface, to limit the axial relative displacement between described locking plate (4).
6. prestress wire anchor cable is made a concession in weighing apparatus resistance, comprise steel strand, squeeze and cut movable sleeve and lockset, the stretching end of described steel strand is locked in described squeezing by described lockset and cuts in the steel strand hole of movable sleeve, and it is characterized in that, described lockset is specially the lockset according to any one of power 1 to power 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256963.8U CN204851300U (en) | 2015-04-24 | 2015-04-24 | Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256963.8U CN204851300U (en) | 2015-04-24 | 2015-04-24 | Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851300U true CN204851300U (en) | 2015-12-09 |
Family
ID=54741858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520256963.8U Expired - Fee Related CN204851300U (en) | 2015-04-24 | 2015-04-24 | Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083772A (en) * | 2017-05-25 | 2017-08-22 | 陕西煤业化工技术研究院有限责任公司 | A kind of internal resistance type metal shearing resistance pressure-release anchor cable device |
-
2015
- 2015-04-24 CN CN201520256963.8U patent/CN204851300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083772A (en) * | 2017-05-25 | 2017-08-22 | 陕西煤业化工技术研究院有限责任公司 | A kind of internal resistance type metal shearing resistance pressure-release anchor cable device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE4446806C1 (en) | Gas-tight pipe connection | |
| CN112854516A (en) | Self-resetting steel support with prepressing disc spring and friction damper | |
| EP1034096B1 (en) | Device for the mutual support of two construction members | |
| DE3431635C2 (en) | ||
| CN205078914U (en) | A tube expander that is used for non - excavation of old pipeline to change | |
| DE60114890T2 (en) | METHOD OF MANUFACTURING A COMPONENT WITH THREAD AND COMPONENT MANUFACTURED THEREFOR | |
| CN204851300U (en) | Weighing apparatus hinders makes a concession prestress wire anchor rope and tool to lock thereof | |
| EP2792892B1 (en) | Blind rivet nut | |
| CN204827495U (en) | Weighing apparatus hinders makes a concession prestress wire anchor rope | |
| EP0353181A2 (en) | Drill pipe connection | |
| CN214657933U (en) | Self-resetting steel support with prepressing disc spring and friction damper | |
| DE60005763T2 (en) | Bending press with lower beam provided with slots | |
| CN104819004A (en) | Constant-resistance conceding prestressed steel stranded wire anchor cable | |
| CN105464291A (en) | Bursting reinforcement bar connecting sleeve | |
| CN203602290U (en) | Rope pressing device and engineering machine | |
| CN101943195B (en) | Pull rod end part fastening joint and manufacturing method thereof | |
| CN214884400U (en) | Connecting device for stiff concrete section steel column and reinforced concrete beam steel bars | |
| CN214993791U (en) | Tubular pile connecting device based on improved strength | |
| CN206070526U (en) | Combination Extrusion anchor ground tackle | |
| EP2372026B1 (en) | Tension cable and ground anchor composed with it | |
| CN102953376B (en) | Pressure-release anchor structure and manufacture method thereof | |
| KR102329500B1 (en) | Stud bolt and connecting sturcture between column and beam | |
| CN202899130U (en) | Yield anchoring cable | |
| EP2604361B1 (en) | Tensioning wedge device for fastening tools to tool machines | |
| CN211114438U (en) | Grouting sleeve of anti-deformation dislocation punching press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20200424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |