CN206754091U - A kind of locking-type crab-bolt and the mounting structure on concrete - Google Patents

Abstract

The utility model provides a kind of locking-type crab-bolt, and the crab-bolt includes being in screw rod conehead side and being enclosed on the chisel of the lower balance on screw rod expanding retaining connecting portion, the upper balance retaining connecting portion being enclosed on outside screw rod, the impulse force pipe being enclosed on screw rod.The utility model additionally provides the mounting structure on concrete using above-mentioned crab-bolt.Crab-bolt provided by the utility model and mounting structure, not only without carrying out secondary bottom reaming again, significantly reduce installation cost and reduce the careless caused security risk of construction, and the unstressed VE that reaming mounting structure in bottom is formed in real time more firmly, online than ever can be formed in concrete and locks in form whole circle incision concrete surface, make to load on call the firm vertical bearing capacity of crab-bolt in armored concrete, its crab-bolt performance reaches zero shift, ensure that nut will not loosen, crab-bolt screw rod can only break the outstanding result that will not be pulled out.

Description

A kind of locking-type crab-bolt and the mounting structure on concrete

Technical field

It the utility model is related to a kind of crab-bolt, more particularly to a kind of anti-tired heavy load anchor being used under concrete occasion Bolt, the utility model further relate to the mounting structure on concrete.

Background technology

In existing concrete post anchoring technology, expansion anchor forms load by expansive force, long-term load fatigue or by Under pneumatic ripple effect, it can loosen and drop out, accident generation is more, is eliminated by construction industry.

There is pipe crimping type expansion anchor in addition, it is stamped with local pawl using the steel plate of pipe crimping on expansion piece, but by It is narrower in these pawl load-carrying surfaces, the positive and negative blast of powerful pneumatic ripple effect, and long-term load fatigue can not be resisted, so as to lead Loosening is caused to drop out, accident occurs also more.Its problem is by the special drill bit of base expanding and base expanding hole two, after electric hammer impact drill straight hole When carrying out secondary bottom reaming, become horn mouth because electric hammer impacts influence reaming, cause serious position after expanding anchor bolt load Shifting makes nut loosening.

Expanding anchor bolt, the annular groove strutted for expanding plate is above cut with from the expansion pipe of expanding anchor bolt more, and in load, At the weaker annular groove of its wall chamber, it is extruded into no line of rabbet joint after contracting change when being held lotus by crab-bolt tension, shifts crab-bolt, cause nut loosening Drop out, accident occurs also more.

From expanding anchor bolt, using electric tool to sleeve rotating, the blade on expanding plate is set to cut to be formed to concrete Anchoring, but sleeve rotating is rubbed with concrete hole wall, and overlay coating will be caused to have a strong impact on the life-span by comprehensive destruction.

It is related to that drilling residual is remaining to consider to be worth doing when crab-bolt loads, autotomys the detritus to be formed, causes crab-bolt sleeve can not be completely into It is industry common fault in hole.

The content of the invention

The utility model technical problem to be solved first provides a kind of lock that can apply in concrete mounting structure Formula crab-bolt, is more firmly mounted, but without carrying out secondary bottom reaming to institute's drill straight hole by special base expanding and base expanding drill.Therefore, The utility model uses following technical scheme：

A kind of locking-type crab-bolt, including conehead screw rod, it is characterised in that the crab-bolt also includes being in screw rod conehead side and set Lower balance chisel on screw rod expands retaining connecting portion, the upper balance retaining connecting portion, the impulse force being enclosed on screw rod that are enclosed on outside screw rod Pipe；

The top that lower balance chisel expands retaining connecting portion has balance bearing position, and the lower balance chisel expands retaining connecting portion Bottom has balance chisel expansion bearing position, and balance chisel expansion bearing position is made up of multiple valves, has gap between adjacent petals, The balance chisel expansion bearing position can be acted on by the screw rod conehead and outwards dig expansion；

The bottom of upper balance retaining connecting portion has balance power transmission position, and there is upper balance retaining connecting portion balance load to fall Expand position, balance load falls to expand position forms round by multiple valves；

There is the impulse force pipe effect balance load to fall to expand the tapered punch and tube body at position, and the tapered punch can It is punched into balance load to be expanded on the inside of expansion position and form support, and punching is transmitted downwards by upper balance retaining connecting portion Power；

The crab-bolt, which is provided with to fall to expand position in balance load, expands the lock construction of finger lock impulse force pipe, keeps impulse force pipe The support expanded on the inside of position balance load.

Further, on balance retaining connecting portion balance load fall expand position, its intensity higher than it is upper balance retaining connect Socket part body, make balance load fall expand position set chisel edge when, blade surface chisel be pressed on concrete vestibule and carrying when be not to become Shape is caused in deformation.

Further, the balance chisel expansion bearing position end that the lower balance chisel expands retaining connecting portion is chisel edge mouth, should Chisel edge mouth is downward when balance chisel expansion bearing position is unexpanded.

Further, the lower balance chisel expands the balance chisel expansion bearing position of retaining connecting portion, and its intensity is flat higher than lower Weighing apparatus chisel expand retaining connecting portion body, make balance chisel expansion bearing position end blade surface chisel be pressed on concrete vestibule and carrying when not Cause to cause in deformation in deformation.

Further, the balance load, which falls to expand on the outside of position, is provided with anti-slip veins.

Further, the lock construction for pinning impulse force pipe includes at least one of following lock construction：

（1）, the tapered punch there is the anti-back lock section, gap is formed between balance load falls to expand the adjacent petals at position Locking the pawl groove of the anti-back lock section on firm impulse force pipe conehead or the inner side in the balance load portion of falling expansion has the lock jail anti-back lock The anti-back auxiliary section that portion coordinates；

（2）, the impulse force pipe outer upper be provided with multiple bolts, the hole wall in the hole for being connected with the crab-bolt is formed Lock fit.Groove can be provided with the bolt.

The impulse force pipe outer upper is provided with multiple bolts, and its multiple bolt is the annular dentation bolt with hole wall locking. The multiple bolt is alternatively can form the lock constructions such as the helical teeth, double wedge line, elastic card of connection interference locking with hole wall.

Further, the balance load falls to expand when being provided with chisel edge on the outside of size position, and the balance load falls expansion position Pawl groove or anti-back auxiliary section are connected with the anti-back lock section on impulse force pipe conehead, and impulse force pipe internal orifice is provided with prepackage screw fastening, is formed It is overall to exempt from nut prepackage.

Further, the rotation stop rib for preventing that screw rod rotates when installing nut is set on conehead screw rod, and the upper balance is stopped The pawl groove or anti-back auxiliary section for moving back connecting portion are connected with the anti-back lock section on impulse force pipe conehead, and rotation stop rib stops with lower balance chisel expansion Connecting portion Inner portions interference fit is moved back, it is overall that nut prepackage is exempted from formation.

Further, the conehead of the conehead screw rod is provided with storage bits recess, and chip guiding port is provided with the storage bits recess heavy wall.

Further, the upper balance retaining connecting portion is formed by stacking by multiple elements that expand, and is in the expansion of falling of the top The circle that there is element above-mentioned and impulse force pipe to coordinate balances load and falls to expand position, and the element that falls to expand for being in bottom has described put down Also there is a circle balance load to fall to expand position, be in the expansion of falling of top for weighing apparatus power transmission position, the top for falling to expand element at the bottom The lower end of element has tapered punch, and the tapered punch for falling to expand element of top can be punched into the flat of expansion element below Weighing apparatus load falls to expand on the inside of position and is expanded and form support, and transmits impulse force downwards.

Further, the balance chisel that the lower balance chisel expands retaining connecting portion, which expands bearing position chisel edge mouth, can be impregnated with or apply There is wear resistant corrosion resistant layer.When the balance load is provided with chisel edge on the outside of expansion size position, its chisel edge can be impregnated with or scribble wear-resisting Anti-corrosion layer.

Another technical problem to be solved of the utility model is to provide a kind of mounting structure on concrete, and installation is strong Du Genggao, but without carrying out secondary bottom reaming to institute's drill straight hole by special base expanding and base expanding drill.Therefore, the utility model uses Following technical scheme：

A kind of mounting structure on concrete, it is characterised in that：

It drills out the straight hole matched with foregoing crab-bolt size to concrete, in straight hole, places the foregoing of size matching Crab-bolt；

By solenoid mechanical shock or the artificial percussion of liquidating, it is set progressively to be deep into balance retaining connecting portion, on Balance retaining connecting portion, which conducts impulse force to lower balance chisel, expands retaining connecting portion, makes its balance chisel expansion bearing position insertion coagulation Soil layer；

Also, the balance load of upper balance retaining connecting portion falls to expand position top cutting edge stress and dig and expand along drift, Insertion concrete hole wall is formed supports expansion to enclose on chisel expansion retaining, by carrying out mechanical pretension by screw thread on screw rod, or Nut on screw rod is tightened so that lower balance chisel expand the balance chisel expansion further build-in of bearing position of retaining connecting portion in Concrete hole wall is locked in falling to expand bracing ring formation balance on retaining so that the crab-bolt being fitted into armored concrete has firm hold Carry power；

By solenoid mechanical shock or the artificial percussion of liquidating, it is progressively deep into balance load and fall to expand in position Afterwards, the structure for pinning impulse force pipe pins impulse force pipe, prevents its retroversion from losing the branch fallen and expanded on the inside of position to balance load Support acts on, and makes to be embedded in concrete hole wall and is formed to fall chisel and expand support expansion circle on retaining and really hold dead load.

Further, the gap that the lower balance chisel expands between the balance chisel expansion bearing position adjacent petals of retaining connecting portion Stagger in the gap expanded with the balance load of upper balance retaining connecting portion between the adjacent petals of position.

Further, the conehead of the conehead screw rod is provided with storage bits recess, and chip guiding port is provided with the storage bits recess heavy wall； When expanding position incision concrete layer, the detritus cut off is discharged into storage bits recess and drilling vertex (vertices) portion by chip guiding port.

Because using the technical solution of the utility model, crab-bolt provided by the utility model is simple and reasonable, with Past crab-bolt is compared, and can directly be manufactured using cold-heading method, and intensity is big, can form balance chisel expansion bearing position and balance Load falls to expand position.Moreover, crab-bolt of the present utility model uses more than two sections of multi-segment structure, formed in concrete flexible Antidetonation, the mounting structure with flexibility characteristics that can also do not adjusted adaptively directly even if drilling.When mounted, it is of the present utility model The crab-bolt and mounting structure provided, not only without carrying out secondary bottom reaming again, significantly reduce installation cost and drop Security risk caused by low construction accidentally, and it is more firm that bottom reaming mounting structure than ever can be formed in concrete Solid, the online unstressed VE formed in real time locks in form whole circle incision concrete surface so that load armored concrete In the firm vertical bearing capacity of crab-bolt, its crab-bolt performance reaches zero shift, it is ensured that nut will not be loosened, and crab-bolt screw rod can only be broken The outstanding result that will not be pulled out.

Test data is illustrated：

A, M12 8.8 grades of screw rods, chisel expand element, Dao Kuo mechanisms, impulse force pipe external diameter 18mm in C30/C45 concrete structures Anchor hole in collapse state

B, M12 8.8 grades of screw rods, reduce and fall to expand collapse state of the girth in the anchor hole of C30 concrete structures

Brief description of the drawings

Fig. 1 is a kind of schematic diagram of the embodiment of crab-bolt provided by the utility model before being mounted.

Fig. 2 is Fig. 1 sectional view, and conehead screw rod is concealed in figure.

Fig. 3 is showing when upper balance retaining connecting portion and lower balance chisel expand retaining connecting portion disjunctor in embodiment illustrated in fig. 1 It is intended to.

Fig. 4 is the upward view that lower balance chisel shown in Fig. 3 expands retaining connecting portion.

Fig. 5 is the top view of upper balance retaining connecting portion shown in Fig. 3.

Fig. 6 is the schematic diagram of the impulse force pipe in embodiment illustrated in fig. 1.

Fig. 7 be it is lower balance chisel expansion bearing position adjacent petals between gap with balance load fall expand position adjacent petals it Between schematic diagram of gap when staggering.

Fig. 8 is Fig. 7 sectional view.

Fig. 9 be it is lower balance chisel expansion bearing position adjacent petals between gap with balance load fall expand position adjacent petals it Between gap when staggering, mounting structure schematic diagram of the present utility model.

Figure 10 is crab-bolt embodiment installation process schematic diagram shown in the utility model Fig. 1.

Figure 11 for it is upper balance retaining connecting portion by it is multiple fall expand elements be formed by stacking, and it is lower balance chisel expand retaining connecting portion and The schematic diagram of crab-bolt embodiment during upper balance retaining connecting portion split, conceals conehead screw rod in figure.

Figure 12 is the sectional view of embodiment illustrated in fig. 11.

The top view of impulse force pipe in the embodiment illustrated in fig. 11 of Figure 13 positions.

When Figure 14 is that upper balance retaining connecting portion is formed by stacking by multiple expansion elements, be in top expands showing for element It is intended to.

When Figure 15 is that upper balance retaining connecting portion is formed by stacking by multiple expansion elements, be in top expands cuing open for element View.

Figure 16 for upper balance retaining connecting portion by it is multiple fall expand elements and be formed by stacking when, at the bottom fall to expand element shows It is intended to.

Figure 17 for upper balance retaining connecting portion by it is multiple fall expand elements and be formed by stacking when, at the bottom fall to expand element is cutd open View.

When balance chisel expands retaining connecting portion and upper balance retaining connecting portion split under Figure 18 positions, lower balance chisel expands retaining connection The schematic diagram in portion.

Figure 19 is the enlarged drawing at Figure 14 A positions.

Figure 20 is schematic diagram of the crab-bolt another kind embodiment provided by the utility model before being mounted, and is concealed in figure Conehead screw rod.

Figure 21 is Figure 20 exploded view.

Figure 22 is a kind of schematic diagram of embodiment of conehead screw rod.

The sectional view of conehead screw rod shown in Figure 23 bitmaps 22.

Figure 24 is the upward view of conehead screw rod shown in Figure 22.

Embodiment

Referring to the drawings 1-10,22,23,24.Locking-type crab-bolt provided by the utility model, including conehead screw rod 1.The anchor The lower balance chisel that bolt also includes being in the periphery of screw rod conehead 10 expands retaining connecting portion 2, the upper balance retaining being enclosed on outside screw rod 1 connection Portion, the impulse force pipe 4 being enclosed on screw rod 1.

The top that lower balance chisel expands retaining connecting portion 2 has balance bearing position 22, and the lower balance chisel expands retaining connection The bottom in portion has balance chisel expansion bearing position, and balance chisel expansion bearing position is made up of multiple valves 23, had between adjacent petals There is gap, as shown in Fig. 9,10, the balance chisel expansion bearing position can be acted on and expanded outwardly by the screw rod conehead 10.

The bottom of upper balance retaining connecting portion has balance power transmission position 32, for uniformly transferring in a circumferential direction downwards Impulse force；There is upper balance retaining connecting portion balance load to expand position, and balance load falls to expand position forms round by multiple valves 31, There is gap between adjacent petals 31.Balance load, which falls to expand to fall after position can be pressurized, expands embedded concrete hole wall 101, forms inverted cone surface Coordinate, and on concrete hole wall formed close to annular retaining on bracing ring 103, can uniform stressed, eliminate stress.

The balance load of the upper balance retaining connecting portion falls to expand position, and its intensity is higher than upper balance retaining connecting portion sheet Body, namely tubular position.The balance load, which falls to expand on the outside of position, can also be provided with anti-slip veins so that the balance load portion of falling expansion Position also has the grip to hole wall.

The upper balance retaining connecting portion and lower balance chisel, which will expand retaining connecting portion 2, to incite somebody to action both using such as the present embodiment The mode of disjunctor, will balance power transmission position 32 and balance bearing position 22 is connected as a single entity.

The screw rod conehead of the crab-bolt expands the metal tube of retaining connecting portion 2 by upper balance retaining connecting portion and lower balance chisel The multiple valves 31 for swinging to the power transmission balance load portion of falling expansion form the embedded concrete hole wall of circumferencial direction support, to ensure that upper balance is stopped Move back connecting portion and lower balance chisel expands the effective load of metal tube of retaining connecting portion 2, it is proposed that do not cut annular groove, avoid pressure-bearing at annular groove Deformation retract.

The impulse force pipe 4 has the tapered punch 41 and tube body 42 in the effect balance load portion of falling expansion, the tapered punch Balance load can be punched into be expanded on the inside of expansion position and form support, and transmitted downwards by upper balance retaining connecting portion Impulse force.The structure of the impulse force pipe 4 causes it to be alternatively the part of cold-heading manufacture.

The balance load, which falls, expands the taper that the inwall 310 at position most preferably matches into the taper with tapered punch 41.

The crab-bolt, which is provided with to fall to expand position in round balance load, expands the lock construction of finger lock impulse force pipe, makes impulse force pipe Keep the support expanded on the inside of position balance load.The lock construction can be arranged on one or more of crab-bolt position.This In embodiment, the structure for pinning impulse force pipe includes following two lock constructions：

（1）, the tapered punch there is the anti-back lock section 44, balance load falls to expand gap shape between the adjacent petals at position Into the pawl groove 34 for locking the anti-back lock section on firm impulse force pipe conehead.Anti-back lock section 44 can be back taper raised topography.

（2）, the outer upper of impulse force pipe 4 be provided with multiple bolts 43, for the straight hole 100 that is connected with the crab-bolt Hole wall forms lock fit, and the lock fit can be interference fit, locking coordinates, insertion coordinates etc. so that whole branch crab-bolt tool There is locking function, it is automatic locking between hole wall after crab-bolt is connected with straight hole 100, impulse force pipe is pinned, prevents its retroversion The supporting role expanded on the inside of position balance load is lost, makes to be embedded in the formation of concrete hole wall and support on chisel expansion retaining to expand Circle really holds dead load, can further keep the stable connection of crab-bolt on the whole, improves antidetonation, shock proof performance.For Increase effect, groove 431 can be provided with the bolt 43.

As shown in Fig. 1,22,23, rotation stop rib 11, the upper balance retaining connecting portion pawl groove 34 are set on conehead screw rod 1 It is connected with the anti-back lock section 44 on impulse force pipe conehead, rotation stop rib 11 expands the Inner portions of retaining connecting portion 2 with lower balance chisel and is interference fitted, and makes Crab-bolt, which is formed, exempts from nut prepackage entirety.

The conehead of the conehead screw rod can be provided with storage bits recess 12.

As shown in Figure 10, the mounting structure on concrete of the above-mentioned crab-bolt of reason provided by the utility model, including Below：

The straight hole 100 that it is matched to concrete drill size with above-mentioned crab-bolt size, in straight hole 100, place size The above-mentioned crab-bolt matched somebody with somebody；By the mechanical shock of solenoid 4 or the artificial percussion of liquidating, it is set progressively to be deep into balance retaining connecting portion In, upper balance retaining connecting portion, which conducts impulse force to lower balance chisel, expands retaining connecting portion, its balance chisel expansion bearing position is existed Expanded in the presence of screw rod conehead 10 and be embedded in concrete layer 102, due to can have in straight hole drill bit can not chip removal it is clean A small amount of detritus, it is pushed into by crab-bolt to be stored in foot of hole hole point, at this moment crab-bolt bar vertebra head just heads on bottom hole, and leaves multiple The chip guiding port in direction, the detritus cut off would generally fall bottom, then being discharged into storage bits recess 12 by bottom chip guiding port up squeezes Press or occupy remaining drilling vertex (vertices) portion locus.

Also, balance load fall to expand position simultaneously stress and the taper along drift falls to expand, it is synchronous in concrete hole wall 101 Formed and fall to expand bracing ring 103 on retaining, by being tightened to the nut 5 on screw rod so that lower balance chisel expands retaining connecting portion Balance digs the expansion further build-in of bearing position and locked in concrete hole wall with falling to expand bracing ring formation VE on retaining, makes The firm vertical bearing capacity of crab-bolt loaded on call in armored concrete, its crab-bolt performance reach zero shift, it is ensured that and nut will not loosen, Crab-bolt screw rod can only break the outstanding result that will not be pulled out.And balance load falls to expand after position is pressurized diffusion and enters concrete hole Wall 101, form inverted cone surface and coordinate, formed on concrete hole wall close to bracing ring 103 and the quilt of bottom on the retaining of annular The online generation in real time of embedding spill, can be such that form fit is most adapted to, stress is minimized.

The utility model is using synchronous double expansion formula technologies, by impacting conductive equilibrium chisel expansion bearing position and balance load The portion's of falling expansion circle to hole wall expand embedded to aperture is more than, and is the insertion that expansion bearing position is dug by balancing when crab-bolt is in carrying The hole wall vertical tension of the hole wall+balance load portion of falling expansion circle is embedded in the hole wall support vertical tension of hole wall, so to concrete Outwardly against stress it is smaller, therefore available for away from concrete compared with edge region install load.

By solenoid mechanical shock or the artificial percussion of liquidating, it is progressively deep into balance load and fall to expand in position Afterwards, when balance dig expansion bearing position insertion concrete layer 102 in place, balance load fall to expand position when diffusing into, impulse force pipe 4 On bolt 43 also with straight hole hole wall formed lock fit, firmly keep above-mentioned connection status.

Reference picture 7,8,9, when placing crab-bolt, gap 24 and balance between the adjacent petals of balance chisel expansion bearing position Pawl groove 34 between the adjacent petals in the load portion of falling expansion preferably staggers, and can so form unexpected interlocking structure, further Increase installation strength.

Drawing reference numeral 200 is the part for needing to be connected in concrete foundation 300.

Reference picture 11-19.It can be split that upper balance retaining connecting portion and lower balance chisel, which expand retaining connecting portion 2,.

As illustrated, the balance bearing position 22 that lower balance chisel expands retaining connecting portion 2 can typically use round, can also use Other can be formed with the part above it coordinates, and lower balance chisel is expanded the uniform stressed in a circumferential direction of retaining connecting portion 2 Configuration.The diameter at the maximum position that the diameter of the round can expand retaining connecting portion 2 than lower balance chisel is small, forms necking down, energy The injustice of concrete hole wall is avoided.The structure and operation principle of lower balance chisel expansion retaining connecting portion 2 are identical with previous embodiment.

It can be the part that cold-heading pressure is manufactured that the lower balance chisel, which expands retaining connecting portion 2,.To the concrete of C30 labels For hole wall, when its concrete crushing strength is 30MPa, it is proposed that lower balance chisel expands the balance chisel expansion load of retaining connecting portion 2 Position metal strength reaches 600MPa, when concrete crushing strength is more than 40MPa, it is proposed that lower balance chisel expands retaining connecting portion Balance chisel expansion bearing position intensity reach 800MPa.

In the aforementioned embodiment, the upper balance retaining connecting portion is considered to fall to expand element by one and formed, and And can also expand retaining connecting portion split with lower balance chisel, between expansion element and lower balance chisel expand retaining connecting portion 2 Can be with or without intermediate member, as long as impulse force can be passed to lower balance chisel expands retaining connecting portion 2.It is described to fall to expand member The bottom of part has balance power transmission position 32；For uniformly transferring impulse force in a circumferential direction downwards, it typically uses round, Other can be formed with part below can be used to coordinate, chisel is expanded the configuration of the uniform stressed in a circumferential direction of element 2.Institute It is most preferably that diameter is smaller than the diameter at the maximum position of expansion element to state round, forms necking down, it is possible to increase power transmission effect, and can be right The uneven avoidance of concrete hole wall.

The upper retaining connecting portion that balances can be also formed by stacking such as the present embodiment, formed and divided up and down by multiple elements that expand The round balance load of the multiple tracks of cloth falls to expand position.Exemplified by falling to expand element 3a, 3b by two and be formed by stacking, the top is in Expand the circle balance load portion of falling expansion that there is element 3a above-mentioned and impulse force pipe 4 to coordinate, its structure and operation principle and foregoing reality Apply that example is identical, the element 3a that falls to expand for being in bottom has the balance power transmission position 32, at the bottom fall to expand element 3b's Top also encloses balance load with one and falls to expand position, and above-mentioned round balances load and is made up of multiple valves at expansion position, is in top The lower end for expanding element 3a of falling there is tapered punch 35, as a circle balance load of impulse force pipe 4 and top falls to expand the cooperation at position Identical, the balance load for falling to expand element that the tapered punch 35 for falling to expand element of top can be punched into below falls to expand in position Side is expanded and forms support, and transmits impulse force downwards.

The element that expands can be the part that cold-heading pressure is manufactured, to used in the concrete of more than C30 labels Expand element, it is proposed that the metal strength for expanding element is 600MPa.

Can also have on tapered punch 35 such as the anti-back lock section 37 on impulse force pipe, anti-back lock section 37 and expansion of falling at the bottom Element 3b pawl groove forms anti-back lock fit.Similar with previous embodiment, when placing crab-bolt, two are fallen to expand element The pawl groove 34 that balance load falls to expand between the adjacent petals at position preferably staggers.

In Figure 11-19, drawing reference numeral and Fig. 1-10 identicals, identical implication is represented.

Such as Figure 11,12,14,15,19, no matter upper balance retaining connecting portion by one or it is several fall to expand elements and form, its On the balance load fall expand position head on the outside of can be provided with chisel edge 36.The end of chisel edge 36 can have certain thickness and Taper.Chisel edge 36 can be impregnated with or scribble wear resistant corrosion resistant layer.

As shown in Figure 12,13, when the balance load is provided with chisel edge on the outside of expansion position head, on the impulse force pipe conehead Anti-back lock section insertion pawl groove horn mouth in, impulse force pipe internal orifice be provided with prepackage screw fastening 45, can be threadedly coupled with screw rod 1, It is overall that nut prepackage is exempted from formation.

In addition, as shown in Fig. 2,8,18,20,21, the lower balance chisel expands the balance chisel expansion load portion of retaining connecting portion Position end（Namely the end of valve 23）Or chisel edge mouth 230, the chisel edge mouth 230 are unexpanded in balance chisel expansion bearing position When, it is downward.

Reference picture 22-23.There are multiple bolts set by the outer upper of impulse force pipe 4, the multiple bolt is alternatively ring Shape rack 43a structure, the multiple bolt are alternatively helical teeth, double wedge line, the bullet that connection lock fit can be formed with hole wall The structures such as property card.

Anti-back lock section set by the tapered punch can also use the ring at impulse force pipe tapered punch 41 as shown in figs. 23-24 Shape tooth 44a, balance load fall expand position inner side have with the anti-back lock section coordinate anti-back auxiliary section, its can also be with The tooth 34a that annular tooth 44a coordinates.

Connection that above-mentioned mounting structure can be used between concrete substrate and other curtain wall peripheral structures, such as highway bridge Beam splicing railway bridge train accelerates pier reinforcing etc., moist stone curtain wall, tunnel, basement, island, harbour, chemical plant, water conservancy The crowds such as contour wet salt soda acid area, subway, airport, station, venue, skyscraper underground garage relatively concentrate high-risk engineering.

Specific embodiment of the utility model is the foregoing is only, but architectural feature of the present utility model is not limited to This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made Among the protection domain of type.

Claims (16)

1. a kind of locking-type crab-bolt, including conehead screw rod, it is characterised in that the crab-bolt also includes being in screw rod conehead side and being enclosed on Lower balance chisel on screw rod expands retaining connecting portion, the upper balance retaining connecting portion being enclosed on outside screw rod, the impulse force pipe being enclosed on screw rod；

The top that lower balance chisel expands retaining connecting portion has balance bearing position, and the lower balance chisel expands the bottom of retaining connecting portion Expansion bearing position is dug with balance, balance chisel expansion bearing position is made up of multiple valves, has gap between adjacent petals, described Balance chisel expansion bearing position can be acted on by the screw rod conehead and outwards dig expansion；

The bottom of upper balance retaining connecting portion has balance power transmission position, and upper balance retaining connecting portion has the balance load portion of falling expansion Position, balance load falls to expand position forms round by multiple valves；

There is the impulse force pipe effect balance load to fall to expand the tapered punch and tube body at position, and the tapered punch can pour Fall to expand on the inside of position to balance load and expanded and form support, and impulse force is transmitted downwards by upper balance retaining connecting portion；

The crab-bolt, which is provided with to fall to expand position in balance load, expands the lock construction of finger lock impulse force pipe, impulse force pipe is kept to flat The support that weighing apparatus load expands on the inside of position.

2. a kind of locking-type crab-bolt as claimed in claim 1, it is characterised in that the balance load of balance retaining connecting portion falls in institute Expand position, its intensity is higher than upper balance retaining connecting portion body.

3. a kind of locking-type crab-bolt as claimed in claim 1, it is characterised in that the lower balance chisel expands the balance of retaining connecting portion Chisel expansion bearing position, its intensity expand retaining connecting portion body higher than lower balance chisel.

4. a kind of locking-type crab-bolt as claimed in claim 1 or 2, it is characterised in that the balance of the upper balance retaining connecting portion is held Power, which falls to expand position, is provided with chisel edge.

5. a kind of locking-type crab-bolt as claimed in claim 4, it is characterised in that the lower balance chisel expands the balance of retaining connecting portion Chisel expansion bearing position end is chisel edge mouth.

6. a kind of locking-type crab-bolt as claimed in claim 1, it is characterised in that the lock construction for pinning impulse force pipe includes following At least one of structure：

(1), the tapered punch has an anti-back lock section, and balance load, which falls to expand gap between the adjacent petals at position and formed, locks firm impulse force It is anti-that there is the lock jail anti-back lock section to coordinate for the teeth groove of anti-back lock section on pipe conehead or the inner side in the balance load portion of falling expansion Move back auxiliary section；

(2), the impulse force pipe outer upper is provided with multiple bolts, and the hole wall in the hole for being connected with the crab-bolt forms locking Coordinate.

7. a kind of locking-type crab-bolt as claimed in claim 6, it is characterised in that the bolt is provided with groove.

8. a kind of locking-type crab-bolt as claimed in claims 6 or 7, it is characterised in that described impulse force pipe outer upper is provided with multiple Bolt, the range of choice of bolt include vertical bar shaped bolt, annular dentation bolt, oblique tooth-shaped bolt, double wedge line, elastic card.

9. a kind of locking-type crab-bolt as claimed in claim 6, it is characterised in that being set on conehead screw rod prevents when installing nut The rotation stop rib that screw rod rotates, the teeth groove of the upper balance retaining connecting portion or anti-back auxiliary section are locked with the anti-back on impulse force pipe conehead Portion connects, and rotation stop rib expands retaining connecting portion Inner portions with lower balance chisel and is interference fitted, and it is overall that nut prepackage is exempted from formation.

10. a kind of locking-type crab-bolt as claimed in claim 6, it is characterised in that the balance load, which falls to expand on the outside of the head of position, to be set When having chisel edge, the balance load falls to expand position teeth groove or anti-back auxiliary section is connected with the anti-back lock section on impulse force pipe conehead, rushes Solenoid internal orifice is provided with prepackage screw fastening, and it is overall that nut prepackage is exempted from formation.

11. a kind of locking-type crab-bolt as claimed in claim 1, it is characterised in that it is recessed that the conehead of the conehead screw rod is provided with storage bits Portion.

12. a kind of locking-type crab-bolt as claimed in claim 11, its feature is provided with chip guiding port at the storage bits recess heavy wall.

13. a kind of locking-type crab-bolt as claimed in claim 1, it is characterised in that the upper balance retaining connecting portion falls to expand by multiple Element is formed by stacking, and the circle balance load that element has and above-mentioned impulse force pipe coordinates that falls to expand for being in the top falls to expand position, The element that falls to expand for being in bottom has the balance power transmission position, and the top for falling to expand element at the bottom also has a circle flat The load that weighs falls to expand position, and being in the lower end for falling to expand element of top has tapered punch, and top falls to expand the tapered punch of element The balance load for falling to expand element that can be punched into below, which falls to expand on the inside of position, to be expanded and forms support, and is transmitted downwards Impulse force.

A kind of 14. mounting structure on concrete, it is characterised in that：

The straight hole that it is matched to concrete drill size with the crab-bolt size described in claim 1, in straight hole, place size matching Claim 1 described in crab-bolt.

15. a kind of mounting structure on concrete as claimed in claim 14, it is characterised in that the lower balance chisel expansion stops Move back the gap between the balance chisel expansion bearing position adjacent petals of connecting portion and the balance load of upper balance retaining connecting portion falls to expand Stagger in gap between the adjacent petals of position.

A kind of 16. mounting structure on concrete as claimed in claim 14, it is characterised in that the cone of the conehead screw rod Head is provided with storage bits recess, and chip guiding port is provided with the storage bits recess heavy wall；When making chisel edge cut concrete layer by digging expansion, institute The detritus of excision is discharged into storage bits recess and drilling vertex (vertices) portion by chip guiding port.