CN202851555U - Self-tangency hole reaming anchor bolt - Google Patents
Self-tangency hole reaming anchor bolt Download PDFInfo
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- CN202851555U CN202851555U CN 201220162373 CN201220162373U CN202851555U CN 202851555 U CN202851555 U CN 202851555U CN 201220162373 CN201220162373 CN 201220162373 CN 201220162373 U CN201220162373 U CN 201220162373U CN 202851555 U CN202851555 U CN 202851555U
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Abstract
The utility model discloses a self-tangency hole reaming anchor bolt comprising a sleeve cylinder, wherein the lower end of the sleeve cylinder is provided with an expansion structure, the upper end of the sleeve cylinder is provided with a clamp groove in which an installing tool is embedded, the expansion structure comprises a plurality of expansion sheets, the lower end of the expansion structure is provided with a milling structure, the milling structure comprises a plurality of cutter teeth which are evenly distributed around the axis of the sleeve cylinder in the circumferential direction, one side each cutter tooth is provided with a cutting edge and the side faces to the rotating direction of the sleeve cylinder, each cutting edge is obliquely arranged relative to an end face of the sleeve cylinder, and the bottom end of each cutting edge protrudes towards the rotating direction of the sleeve cylinder; and the cutter teeth are directly machined through the lower end of the expansion structure, a hard material wear resistant layer is arranged on the working faces of the cutter teeth or the cutting edges are provided with hard alloy blocks, or the cutter teeth are wholly formed by the hard alloy and are fixed at the lower end of the expansion structure. The self-tangency hole reaming anchor bolt is characterized in that the milling principle of a milling cutter is used, the cutting edges match with the hard alloy or hard material wear resistant layer, therefore, the transverse and lengthways milling performance can be greatly improved when the anchor bolt is expanded.
Description
Technical field
The utility model relates to a kind of reaming crab-bolt of autotomying, be specifically related to a kind of in inflation process automatic counterboring, not only can the milling concrete but can the milling concrete in the expansion anchor of metallic material.
Background technique
When reaming crab-bolt application technology is installed after existing, punch at concrete substrate with drill bit first, carry out the bottom reaming with special-purpose counterbore cutter head again, form locked mechanism with the reaming space behind the crab-bolt body head distending, do not produce swelling stress.But in actual reaming, run into reinforcing bar in the concrete of being everlasting, the at present design of counterbore cutter head is only for concrete substrate cutting reaming, and to reinforcing bar cutting poor performance, the concrete that can't finish the reinforcing bar position is arranged carries out reaming.There are the defectives such as complex operation, the location is inaccurate, installation efficiency is low in counterbore cutter head simultaneously.
The reaming crab-bolt of autotomying with milling structure, the use of having saved counterbore cutter head have been designed for the problems referred to above.The tube-in-tube structure of this crab-bolt as shown in Figure 1, its lower cartridge is provided with expansion structure, the barrel that expansion structure is cut apart the sleeve lower end by cracking seam 1-4 forms, but and the cutter tooth of simultaneously formation milling, cracking seam 1-4 vertical sleeve end face arranges, the blade of cutter tooth is positioned at the side towards sleeve rotating, be actually the side of cracking seam 1-4, in order to improve crab-bolt to the milling ability of metallic material, be provided with the diamond turning layer on the cutter tooth surface, rely on the hardness of diamond self and the rough surface of milling layer to implement milling; As shown in Figure 2, can also realize Milling Function by hard alloy blocks 1-8 is set at cutter tooth, the outstanding cutter tooth of hard alloy blocks 1-8 surface consists of the milling blade.Cooperate expansion structure also to be provided with technology groove 1-3 on barrel, technology groove 1-3 can discharge the stress that produces when expanding, and is conducive to dilatancy, and this crab-bolt is also with cone nut or the taper rod of dilating expansion structure, and is also not shown among the figure.
The installation method of this reaming crab-bolt of autotomying is as follows, sleeve and cone nut or taper rod assemble and are placed in the mounting hole, the sleeve upper end is provided with draw-in groove 1-6, utilize instrument as shown in Figure 8 to be installed on the percussion drill, projection 8 and the chimeric sleeve rotating that drives of draw-in groove 1-6, be hit the pressure house that bores towards the precession of mounting hole bottom, expansion structure is namely strutted by cone nut or taper rod, cutter tooth gets final product milling concrete and reinforcing bar wherein when expansion structure expands, automatic counterboring is finished installation, not only has vertical milling but also have cross milling in inflation process.
But above-mentioned two kinds of milling structures of the reaming crab-bolt of autotomying, Milling Function is still good not, one of reason is that cracking seam 1-4 and sleeve rotating direction are vertical relation all the time, cause crab-bolt structure itself less to the incision dynamics of material, with milling cutter passivation or tipping be an effect, in milling process, be difficult to reinforcing bar is applied effective Milling Force; Former two is to expand the later stage in crab-bolt therefore, because the spacing of cracking seam 1-4 becomes large, the milling continuity of each cutter tooth reduces, along with expand to carry out Milling Force more and more less, the milling process is more and more slower, in fact is difficult to reach firm degrees of expansion is installed; Adopt the crab-bolt of hard alloy blocks, because the gap between the alloy block is larger, the milling continuity is not high, and is not ideal enough equally to the milling performance of metallic material, and also the phenomenon that alloy block comes off can occur in the milling process.
The tube drill that also has the water rig that the tubular type milling structure is common, its front end is also with milling structure, concrete form is to consist of by process the slit at the chisel edge tube wall, but tube drill does not laterally expand when vertically going deep into, namely only vertically laterally not milling of milling, its Milling Force is constant in theory, and this drill bit is also because the reason of self material hardness, better to Brittleness of Concrete material milling performance, but very poor for the metallic material milling performance with toughness.
The model utility content
Deficiency for above-mentioned prior art existence, the purpose of this utility model is to provide a kind of novel reaming crab-bolt of autotomying, this crab-bolt is provided with the tilting blade that is beneficial to milling at the cutter tooth position, cooperate cemented carbide or hard material wearing layer, has increased substantially the milling performance when crab-bolt expands.
In order to achieve the above object, the utility model reaming crab-bolt of autotomying comprises that the lower end is provided with the sleeve of expansion structure, and the sleeve upper end is provided with the draw-in groove chimeric with setting tool, and the shape of draw-in groove can be rectangle, U-shaped etc.
Described expansion structure comprises by the cracking seam cuts apart several expanding plates that sleeve lower end barrel consists of, the expansion structure lower end is provided with milling structure, described milling structure comprises around circumferential several the uniform cutters tooth of sleeve axis, described cutter tooth towards sleeve rotating direction one side with blade, the relative sleeve end face of described blade is obliquely installed, and protrude to the sleeve rotating direction blade bottom, forms to be beneficial to the acute angle-shaped of incision material.
Cutter tooth front end and its inner radial surface chamfering transition are in order to match with the cone nut of dilating expansion structure or the conical surface of taper rod.
Described cutter tooth directly is processed to form by the expansion structure lower end, cutter tooth and expanding plate one, be provided with the hard material wearing layer on the cutter tooth working surface or at its blade position hard alloy blocks be set, perhaps, the whole cemented carbide that adopts of described cutter tooth consists of, and by inlaying or being weldingly fixed on the expansion structure lower end.
Further, each described expanding plate lower end is respectively arranged with one or several cutters tooth, when a cutter tooth is set, the tilting blade is positioned at cracking seam lower end, from seeing in shape the nick shaped that is neat, when a plurality of cutter tooth was set, knife-tooth structure was identical, the tilting blade still is neat nick shaped between adjacent cutter tooth.
Further, described expanding plate outer surface is with the diminishing conical section of external diameter vertically from the described cutter tooth of front end place.
Further, the barrel on described cutter tooth top with the radial contraction section with outstanding cutter tooth, cutter tooth outer side surface angulation milling face.
Further, described hard material wearing layer is made of diamond and/or boron nitride, can also adopt the cemented carbide coating, and wearing layer is arranged on the cutter tooth working surface in the mode of welding or plating; Described cemented carbide block welding or be riveted on the blade position.
This place's wearing layer role is different from the diamond turning layer of mentioning in the background technique, in order to improve the wear-resisting property on cutter tooth surface, so need not deliberately pursue surface roughness, can adopt the cemented carbide coating, the tilting blade that cutter tooth itself arranges plays a major role to the milling process.
Further, described sleeve is provided with the technology groove that discharges the stress that produces when expanding on expansion structure top, and the technology groove place wears seal ring.Seal ring adopts yielding material, rubber for example, and role is to prevent that the chip that produces in the milling process from entering technology groove, because stone matter chip or metal fragment are to be not easy compressedly, can affect the degrees of expansion of expanding plate.
Further, described crab-bolt also comprises the packing ring that is arranged on the buffering crab-bolt load of sleeve draw-in groove place, and packing ring top is provided with the clamping sleeve of packing washer.When especially the equipment fixed of crab-bolt was subject to Long-term Vibration, the buffer function that this packing ring rose just can avoid crab-bolt loosening well.
Further, described crab-bolt also comprises the cone nut of dilating expansion structure, and the screw rod that arranges in this cone nut and the sleeve is connected, and the tapering face that adapts with mounting hole bottom shape is arranged in this cone nut lower end surface, is provided with anti-slip veins on the tapering face.
Further, the sleeve split of described crab-bolt is arranged to the sleeve of internal thread with the expansion sleeve of expansion structure, the expansion sleeve lower end is equipped with the taper rod of dilating expansion structure, this taper rod comprises the frustum that one section screw rod that is connected with sleeve and screw rod lower end arrange, the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
Further, described expansion sleeve is with the internal thread that matches with taper rod, and perhaps, its upper end is provided with the draw-in groove chimeric with setting tool, and described sleeve lower end is with the projection that matches with described draw-in groove.
Further, be provided with internal thread in the sleeve of described crab-bolt, the sleeve lower end is equipped with the taper rod of dilating expansion structure, this taper rod comprises the frustum that one section screw rod that is connected with sleeve and screw rod lower end arrange, the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
A kind of setting tool that adapts to above-mentioned crab-bolt, comprise the body of rod that connects crab-bolt, described body of rod rear end is with the clamping handle that is connected with power tool, be provided with the controlling device that the control body of rod gos deep into the mounting hole degree of depth on the described body of rod, described controlling device comprises the positioning chuck that is set with on the body of rod, described chuck is located by bolton, or locates by the screw thread that body of rod outer surface arranges.
Further, the described body of rod is by the projection of front end setting and the sleeve draw-in groove clamping of described crab-bolt, and the described body of rod can also join by tapped hole and the described taper rod of axial setting.
Further, described body of rod outer surface also is provided with the scale of reaction crab-bolt degrees of expansion.In order to prevent that scale is worn away, can be processed at the body of rod outer surface structure of convex-concave line.
The utility model reaming crab-bolt of autotomying, have the following advantages: this reaming crab-bolt of autotomying is utilized the principle of milling tool, side at original cutter tooth is provided with the tilting blade that is beneficial to milling, the blade bottom forms and is beneficial to the acute angle-shaped of incision material, cooperate cemented carbide or hard material wearing layer, horizontal and vertical milling performance when having increased substantially crab-bolt and expanding both can the milling concrete, again can the milling metallic material; Cooperate this crab-bolt also to design corresponding setting tool, this setting tool can accurately be regulated the degrees of expansion of crab-bolt, so that the installation of crab-bolt can accurately be carried out according to predetermined design.
Description of drawings
Fig. 1 is the 1st kind of crab-bolt sleeve schematic representation with milling structure in the prior art;
Fig. 2 is the 2nd kind of crab-bolt sleeve schematic representation with milling structure in the prior art;
Fig. 3 is the utility model embodiment 1 stereogram;
Fig. 4 is the utility model embodiment 1 decomposing schematic representation;
Fig. 5 by the utility model embodiment 1 the plan view of use sleeve;
Fig. 6 by the utility model embodiment 2 the plan view of use sleeve;
Fig. 7 by the utility model embodiment 3 the plan view of use sleeve;
Fig. 8 by the utility model embodiment 1 the schematic representation of use setting tool;
Fig. 9 by the utility model embodiment 4 the plan view of use sleeve;
Figure 10 by the utility model embodiment 5 the plan view of use sleeve;
Figure 11 by the utility model embodiment 6 the plan view of use sleeve;
Figure 12 by the utility model embodiment 7 the plan view of use sleeve;
Figure 13 is the utility model embodiment 8 stereogram;
Figure 14 is the utility model embodiment 8 decomposing schematic representation;
Figure 15 is the utility model embodiment 9 decomposing schematic representation;
Figure 16 is the utility model embodiment 10 decomposing schematic representation;
Figure 17 by the utility model embodiment 8 the schematic representation of use setting tool;
Figure 18 is the utility model embodiment 8 scheme of installation;
Figure 19 is the utility model embodiment 10 scheme of installation.
Among the figure: 1. sleeve, 1-1. cutter tooth, 1-2. blade, 1-3. technology groove, 1-4. cracking seam, 1-5. seal groove, 1-6. draw-in groove, 1-7. wearing layer, 1-8. hard alloy blocks, 2. packing ring, 3. clamping sleeve, 4. pad, 5. nut, 6. screw rod, 7. cone nut, 8. projection, the 9. body of rod, 10. clamping handle, 11. taper rods, 12. expansion sleeves, 13. bolts, 14. positioning chucks.
Embodiment
Be to reach technological means and the effect that predetermined model utility purpose is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, structure of the present utility model, feature and effect be described in detail as follows.
Such as Fig. 3, Fig. 4, Figure 5 shows that one of designed embodiment of the utility model, in this embodiment, the reaming crab-bolt of autotomying comprises that the lower end is provided with the sleeve 1 of expansion structure, sleeve 1 upper end is provided with the draw-in groove 1-6 chimeric with setting tool, the barrel that expansion structure is cut apart sleeve 1 lower end by cracking seam 1-4 consists of, comprise several expanding plates, adopt in this embodiment 6 expanding plates, also can adopt common 4 and the expanding plate of other suitable quantities.The expansion structure lower end is provided with milling structure, and this milling structure comprises that the structure of cutter tooth 1-1 can be with reference to figure 5 around the circumferential uniform cutter tooth 1-1 of sleeve 1 axis.
Cutter tooth 1-1 towards a side of sleeve 1 rotation with the blade 1-2 that can carry out milling, blade 1-2 is positioned at cracking seam 1-4 lower end, the facade of blade 1-2 is obliquely installed, be an acute angle angle with sleeve end face, according to the manufacturing process of milling cutter in the prior art as can be known, and by the metal milling process as can be known, the milling performance of acute angle angle is superior than vertical angle, adopt the blade 1-2 of the inclination facade seam 1-4 that ftractureed to be segmented on the adjacent cutter tooth, add easier milling moulding in man-hour at blade like this.
In this embodiment, the expanding plate lower end is provided with 1 cutter tooth 1-1, outer surface is with the diminishing conical section of external diameter vertically from front end cutter tooth 1-1 place, cutter tooth 1-1 is included in the level and smooth tapering body that forms after the radial contraction of barrel lower end, correspondingly the working surface at cutter tooth 1-1 is provided with hard material wearing layer 1-7, outer side surface and the left and right side of working surface enclosed mass cutter tooth 1-1, wearing layer 1-7 is made of diamond or boron nitride, can also adopt the blending material of diamond and boron nitride, mixed proportion such as 50%:50%, also can select other suitable ratios according to milling process, so both can suitably reduce manufacture cost, can reach technological requirement again; Diamond and boron nitride all have the characteristic of high hardness, wear-resisting property is outstanding, often use in the techniques such as milling, grinding, grinding, boring and polishing, wearing layer is arranged on the cutter tooth outer surface in the mode of soldering or plating, wearing layer 1-7 can also adopt the cemented carbide coating, and the wear-resisting property of cemented carbide is outstanding equally.
As shown in Figure 3, Figure 4, the reaming crab-bolt of autotomying also comprises the packing ring 2 that stops up draw-in groove 1-6, the setting of packing ring 2 is in order to prevent that foreign material from entering sleeve 1 inside, packing ring 2 adopts rubber or plastic production, can provide buffering for the load of crab-bolt simultaneously, when crab-bolt was given a shock for a long time with being connected of external member, packing ring 2 can play the effect of alleviating vibrations, weaken the loosening of sleeve bottom expansion structure, so that the connection of this crab-bolt is more fastening, packing ring 2 tops are provided with the clamping sleeve 3 of packing washer 2.For fixing or connection external structure part, also be provided with pad 4 and nut 5 in sleeve 1 upper end.
As shown in Figure 4, the reaming crab-bolt of autotomying also comprises the cone nut 7 of dilating expansion structure, this cone nut 7 is connected with the screw rod 6 of sleeve 1 interior setting, the tapering face that adapts with mounting hole bottom shape is arranged in these cone nut 7 lower end surfaces, be provided with anti-slip veins on the tapering face, arranging of anti-slip veins increased cone nut 7 and the frictional force that hole wall is installed, and prevents from skidding, and is conducive to the expansion of crab-bolt.
As shown in Figure 5, sleeve 1 is provided with the technology groove 1-3 that discharges the stress that produces when expanding on expansion structure top, and technology groove 1-3 place need to wear seal ring, enters the dilatancy that technology groove 1-3 hinders expanding plate to prevent the milling chip.
Also be provided with seal groove 1-5 in technology groove 1-3 top, seal groove 1-5 place wears the seal ring that can seal mounting hole, and this place's seal ring can prevent that the milling chip from running out of mounting hole, can prevent to a certain extent that also exterior materials from entering the mounting hole bottom.
As shown in Figure 8, it is a kind of setting tool of reaming crab-bolt of autotomying among this embodiment that adapts to, comprise the clamping body of rod 9 of reaming crab-bolt of autotomying, the body of rod 9 rear ends are with the clamping handle 10 that is connected with power tool such as percussion drill, the body of rod 9 front ends are provided with the projection 8 with sleeve draw-in groove 1-6 clamping, also be provided with the hole that holds screw rod 6 in the body of rod 9, hole wall is smooth effect.Percussion drill band moving sleeve 1 rotation when crab-bolt is installed, the effect sleeve 1 that is stressed simultaneously is to the precession of mounting hole bottom, but cross milling concrete automatic counterboring when expansion structure is expanded by cone nut 7, when running into the pre-buried metal constructions such as reinforcing bar, can overcome obstruction, in the lump milling.
Figure 6 shows that the 2nd kind of mode of execution of the present utility model, compare with embodiment 1, cutter tooth 1-1 is welded with hard alloy blocks at blade 1-2 position, cemented carbide has a series of premium properties such as hardness height, wear-resisting, intensity and toughness is better, heat-resisting, corrosion-resistant, is common constituent material in milling tool.If this spot size allows, hard alloy blocks can adopt the mode of riveted joint to fix.
Figure 7 shows that the 3rd kind of mode of execution of the present utility model, compare with embodiment 1, the expanding plate lower end is provided with 2 cutter tooth 1-1, but the identical width of the structure of cutter tooth 1-1 reduces, the density increase of cutter tooth 1-1 can be accelerated the milling frequency of milling mechanism, improves Milling Speed.
Correspondingly the working surface at cutter tooth 1-1 is provided with hard material milling layer, and hard material milling layer is made of diamond or boron nitride, also can adopt the cemented carbide coating, and the milling layer is arranged on the cutter tooth working surface in the mode of soldering or plating.
Figure 9 shows that the 4th kind of mode of execution of the present utility model, compare with embodiment 1, the barrel radial contraction of expanding plate and cutter tooth 1-1 connecting part is with outstanding cutter tooth 1-1, the similar angle milling cutter of cutter tooth 1-1 outer side surface, be arranged to the angular milling bevel, more be conducive to cross milling.
Correspondingly the working surface at cutter tooth 1-1 is provided with hard material milling layer, and hard material milling layer is made of diamond or boron nitride, also can adopt the cemented carbide coating, and the milling layer is arranged on the cutter tooth working surface in the mode of soldering or plating.
Figure 10 shows that the 5th kind of mode of execution of the present utility model, compare with embodiment 4, the shape of sleeve 1 lower end is similar to Example 4, but cutter tooth 1-1 integral body is made of cemented carbide, cemented carbide has a series of premium properties such as hardness height, wear-resisting, intensity and toughness is better, heat-resisting, corrosion-resistant, is common constituent material in milling tool.The whole cutter tooth 1-1 of cemented carbide that adopts can weld or be riveted on the expansion structure lower end.
Figure 11 shows that the 5th kind of mode of execution of the present utility model, compare with embodiment 5 that cutter tooth 1-1 welds the hard alloy blocks that is beneficial to the milling metal at blade 1-2 position, if this spot size allows, hard alloy blocks can adopt the mode of riveted joint to fix.
Figure 12 shows that the 7th kind of mode of execution of the present utility model, compare with embodiment 4, the expanding plate lower end is provided with 2 cutter tooth 1-1, but the identical width of the structure of cutter tooth 1-1 reduces, the density increase of cutter tooth 1-1 can be accelerated the milling frequency of milling mechanism, improves Milling Speed.
Correspondingly the working surface at cutter tooth 1-1 is provided with hard material milling layer, and hard material milling layer is made of diamond or boron nitride, also can adopt the cemented carbide coating, and the milling layer is arranged on the cutter tooth working surface in the mode of soldering or plating.
Embodiment 8
Figure 13, Figure 14 shows that the 8th kind of mode of execution of the present utility model, compare with embodiment 1, the sleeve split of the reaming crab-bolt of autotomying is arranged to the sleeve of internal thread with the expansion sleeve 12 of expansion structure, expansion sleeve 12 lower ends are equipped with the taper rod 11 of dilating expansion structure, these taper rod 11 lower ends are provided with frustum, frustum top is with one section screw rod that is connected with sleeve, and the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
Be as shown in figure 17 a kind of setting tool of reaming crab-bolt of autotomying among this embodiment that adapts to, comprise and connect the body of rod 9 of reaming crab-bolt of autotomying, the body of rod 9 rear ends are with the clamping handle 10 that is connected with power tool such as percussion drill, the body of rod 9 front ends axially are provided with the deep hole of internal thread, and the body of rod 9 outer surfaces are provided with the controlling device that the control body of rod gos deep into the mounting hole degree of depth.
Controlling device comprises on the body of rod 9 positioning chuck 14 of suit, and positioning chuck 14 is by bolt 13 fastening location, or the screw thread location that arranges by the body of rod 9 outer surfaces, and the body of rod 9 outer surfaces also are provided with the scale of reaction crab-bolt degrees of expansion.
Figure 18 shows that installation process, at first with expansion sleeve 12, put in the pre-drilled mounting hole after taper rod 11 assemblings, use setting tool as shown in figure 17, rely on the body of rod 9 interior tapped holes to be connected with taper rod and connect to lock expansion sleeve 12 and drive expansion sleeve 12 rotations, can transfer to percussion drill common rig gear this moment, without impact function, or directly adopt common rig, screw thread on dependence taper rod 11 bodies of rod and the snap-in force of setting tool can force expansion sleeve 12 to the precession of mounting hole bottom, by regulating the upper-lower position of positioning chuck 14 on the body of rod 9, can control the degree of depth that setting tool enters mounting hole, thereby the degrees of expansion of control expansion structure, but cross milling concrete when expansion structure is expanded by frustum are when running into the pre-buried metal constructions such as reinforcing bar, can overcome obstruction, in the lump milling.Again installing sleeve, packing ring 2, pad 4 and bolt 13 after expansion is finished.
Because setting tool need to be by the screw thread precession on the taper rod 11, thus the precession of sleeve at the uniform velocity carrying out, the inflation process of expanding plate uses percussion drill more steady, the stabilized structure after the expansion is better than percussion drill and installs.
Embodiment 9
Figure 15 shows that the 9th kind of mode of execution of the present utility model, compare with embodiment 8 that expansion sleeve 12 upper ends are with the draw-in groove chimeric with setting tool, the sleeve lower end is with the projection that matches with this draw-in groove.Adopt the expansion sleeve 12 of this structure, can use setting tool as shown in figure 17, also can use setting tool as shown in Figure 8.Expansion sleeve 12 can also arrange the internal thread that matches with taper rod 11, also not shown among Figure 15, adopt internal thread can make expansion sleeve 12 precessions at the uniform velocity carrying out, the inflation process of expanding plate uses percussion drill more steady, and the stabilized structure after the expansion is better than percussion drill and installs.
Figure 16 shows that the 10th kind of mode of execution of the present utility model, compare with embodiment 8, the sleeve of the reaming crab-bolt of autotomying is for integral body and be provided with internal thread, the sleeve lower end is equipped with the taper rod 11 of dilating expansion structure, these taper rod 11 lower ends are provided with frustum, frustum top is with one section screw rod that is connected with sleeve, and the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
The installation process of this crab-bolt as shown in figure 19, employed setting tool front end is provided with the projection 8 with sleeve draw-in groove 1-6 clamping.At first will put in the pre-drilled mounting hole after sleeve, taper rod 11 assemblings, use setting tool clamping sleeve upper end as shown in figure 19, percussion drill drives sleeve rotating, the effect sleeve that is stressed simultaneously is to the precession of mounting hole bottom, the degree of depth that positioning chuck 14 can controlling tool enters mounting hole, thereby the degrees of expansion of control expansion structure, but cross milling concrete when expansion structure is expanded by frustum, when running into the pre-buried metal constructions such as reinforcing bar, can overcome obstruction, in the lump milling.Packing ring 2, pad 4 and bolt 13 after finishing, are installed in expansion again.
Above describedly be construed as the utility model and be not limited to above embodiment just for the utility model is described, meet the various flexible form of the utility model thought all within protection domain of the present utility model.
Claims (14)
1. reaming crab-bolt of autotomying, comprise that the lower end is provided with the sleeve of expansion structure, the sleeve upper end is provided with the draw-in groove chimeric with setting tool, described expansion structure comprises by the cracking seam cuts apart several expanding plates that sleeve lower end barrel consists of, the expansion structure lower end is provided with milling structure, it is characterized in that, described milling structure comprises around circumferential several the uniform cutters tooth of sleeve axis, described cutter tooth towards sleeve rotating direction one side with blade, the relative sleeve end face of described blade is obliquely installed, and protrude to the sleeve rotating direction blade bottom, cutter tooth front end and its inner radial surface chamfering transition; Described cutter tooth directly is processed to form by the expansion structure lower end, be provided with the hard material wearing layer on the cutter tooth working surface or at its blade position hard alloy blocks be set, perhaps, the whole cemented carbide that adopts of described cutter tooth consists of, and by inlaying or being weldingly fixed on the expansion structure lower end.
2. crab-bolt as claimed in claim 1 is characterized in that, each described expanding plate lower end is respectively arranged with one or several cutters tooth.
3. crab-bolt as claimed in claim 1 is characterized in that, described expanding plate outer surface is with the diminishing conical section of external diameter vertically from the described cutter tooth of front end place.
4. crab-bolt as claimed in claim 1 is characterized in that, the barrel on described cutter tooth top with the radial contraction section with outstanding cutter tooth, cutter tooth outer side surface angulation milling face.
5. crab-bolt as claimed in claim 1 is characterized in that, described hard material wearing layer is made of diamond and/or boron nitride, can also adopt the cemented carbide coating, and wearing layer is arranged on the cutter tooth working surface in the mode of welding or plating; Described cemented carbide block welding or be riveted on the blade position.
6. crab-bolt as claimed in claim 1 is characterized in that, described sleeve is provided with the technology groove that discharges the stress that produces when expanding on expansion structure top, and the technology groove place wears seal ring.
7. crab-bolt as claimed in claim 1 is characterized in that, described crab-bolt also comprises the packing ring that is arranged on the buffering crab-bolt load of sleeve draw-in groove place, and packing ring top is provided with the clamping sleeve of packing washer.
8. crab-bolt as claimed in claim 1, it is characterized in that described crab-bolt also comprises the cone nut of dilating expansion structure, this cone nut is connected with the screw rod of setting in the sleeve, the tapering face that adapts with mounting hole bottom shape is arranged in this cone nut lower end surface, is provided with anti-slip veins on the tapering face.
9. crab-bolt as claimed in claim 1, it is characterized in that, the sleeve split of described crab-bolt is arranged to the sleeve of internal thread with the expansion sleeve of expansion structure, the expansion sleeve lower end is equipped with the taper rod of dilating expansion structure, this taper rod comprises the frustum that one section screw rod that is connected with sleeve and screw rod lower end arrange, the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
10. crab-bolt as claimed in claim 9 is characterized in that, described expansion sleeve is with the internal thread that matches with taper rod, and perhaps, its upper end is provided with the draw-in groove chimeric with setting tool, and described sleeve lower end is with the projection that matches with described draw-in groove.
11. crab-bolt as claimed in claim 1, it is characterized in that, be provided with internal thread in the sleeve of described crab-bolt, the sleeve lower end is equipped with the taper rod of dilating expansion structure, this taper rod comprises the frustum that one section screw rod that is connected with sleeve and screw rod lower end arrange, the tapering face that adapts with mounting hole bottom shape is arranged in the frustum lower end surface, is provided with anti-slip veins on the tapering face.
12. setting tool that adapts to power 1 described crab-bolt, comprise the body of rod that connects crab-bolt, body of rod rear end is with the clamping handle that is connected with power tool, it is characterized in that, be provided with the controlling device that the control body of rod gos deep into the mounting hole degree of depth on the described body of rod, described controlling device comprises the positioning chuck that is set with on the body of rod, and described chuck is located by bolton, or locates by the screw thread that body of rod outer surface arranges.
13. setting tool as claimed in claim 12 is characterized in that, the described body of rod is by the projection of front end setting and the sleeve draw-in groove clamping of described crab-bolt, and the described body of rod can also join by tapped hole and the described taper rod of axial setting.
14. setting tool as claimed in claim 12 is characterized in that, described body of rod outer surface also is provided with the scale of reaction crab-bolt degrees of expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220162373 CN202851555U (en) | 2012-04-17 | 2012-04-17 | Self-tangency hole reaming anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220162373 CN202851555U (en) | 2012-04-17 | 2012-04-17 | Self-tangency hole reaming anchor bolt |
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| CN202851555U true CN202851555U (en) | 2013-04-03 |
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| CN 201220162373 Expired - Fee Related CN202851555U (en) | 2012-04-17 | 2012-04-17 | Self-tangency hole reaming anchor bolt |
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| CN (1) | CN202851555U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635616A (en) * | 2012-04-17 | 2012-08-15 | 王春华 | Self-tangency broaching anchor bolt |
| CN103615452A (en) * | 2013-12-03 | 2014-03-05 | 居万里 | Countersunk head type self-reaming expansion anchor bolt |
| CN105658965A (en) * | 2013-10-21 | 2016-06-08 | 喜利得股份公司 | Expansion anchor having an expansion sleeve having high strength in some regions |
-
2012
- 2012-04-17 CN CN 201220162373 patent/CN202851555U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635616A (en) * | 2012-04-17 | 2012-08-15 | 王春华 | Self-tangency broaching anchor bolt |
| CN105658965A (en) * | 2013-10-21 | 2016-06-08 | 喜利得股份公司 | Expansion anchor having an expansion sleeve having high strength in some regions |
| US10018213B2 (en) | 2013-10-21 | 2018-07-10 | Hilti Aktiengesellschaft | Expansion anchor having a high-strength expansion sleeve in certain areas |
| CN103615452A (en) * | 2013-12-03 | 2014-03-05 | 居万里 | Countersunk head type self-reaming expansion anchor bolt |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130417 |