CN207830306U

CN207830306U - Expansion bolt sleeve and expansion bolt

Info

Publication number: CN207830306U
Application number: CN201820209020.3U
Authority: CN
Inventors: 陆展望
Original assignee: Ningbo Soo Pml Precision Mechanism Ltd
Current assignee: Ningbo Soo Pml Precision Mechanism Ltd
Priority date: 2018-02-06
Filing date: 2018-02-06
Publication date: 2018-09-07
Anticipated expiration: 2028-02-06

Abstract

The utility model is related to a kind of expansion bolt sleeve and expansion bolts, belong to technical field of fastening.Expansion bolt sleeve, including sleeve body, sleeve body is the tube structure of inner hollow, sleeve body includes the first end and second end being oppositely arranged, axial direction of the first end with second end along sleeve body is distributed, and sleeve body offers at least two expansion slots, and at least two expansion slots are symmetrical along rotating in a circumferential direction for sleeve body, expansion slot is extended by first end towards second end, and the flute length of expansion slot is more than 3/4ths of the length of sleeve body.Expansion bolt sleeve, reasonable in design, the flute length of expansion slot is longer, substantially increases the expansive force of the expansion bolt sleeve and the expansion bolt of screw rod composition.Using the expansion sleeve of above-mentioned expansion bolt sleeve, during use, there is larger expansive force, installation accuracy is high, improves connective stability；In addition, screw rod can be detached with tapered cup nut, the dismounting after being easy to use avoids generating security risk.

Description

Expansion bolt sleeve and expansion bolt

Technical field

The utility model is related to technical field of fastening, in particular to a kind of expansion bolt sleeve and expansion bolt.

Background technology

Expansion bolt is mainly used for the fixed object on building wall, and expansion bolt is usually by screw rod cylinder, expansion The parts such as head, expansion sleeve, nut, washer and gasket form.Fastening expansion bolt currently on the market is without being split type It is that half connects together, as the split type link for needing an assembling product；Half uses swollen with expansion bolt together Expansive force is inadequate, has very big displacement generation.

During existing expansion bolt use, the expansive force of expansion sleeve is inadequate, and easy tos produce displacement, meanwhile, Screw column leaks in vitro influences environmental beauty, and metope is often protruded using discarded expansion bolt, it is difficult to remove, it is hidden to there is safety Suffer from.

Utility model content

The purpose of this utility model is that in view of the above-mentioned problems, provide a kind of expansion bolt sleeve, reasonable in design, set The flute length of the expansion slot of cylinder ontology setting is longer, substantially increases the swollen of the expansion bolt that the expansion bolt sleeve and screw rod form Expansive force makes the above problem be improved.

Another of the utility model is designed to provide a kind of expansion sleeve, using above-mentioned expansion bolt sleeve, makes With in the process, which has larger expansive force, and installation accuracy is high, improves connective stability；In addition, screw rod can It is detached with tapered cup nut, the dismounting after being easy to use, avoids generating security risk.

The utility model is realized in this way：

The embodiments of the present invention provide a kind of expansion bolt sleeve, including sleeve body, and the sleeve body is The tube structure of inner hollow, the sleeve body include the first end and second end being oppositely arranged, the first end with it is described For second end along the axial direction distribution of the sleeve body, the sleeve body offers at least two expansion slots, and described at least two Expansion slot is symmetrical along rotating in a circumferential direction for the sleeve body, and the expansion slot is along the axial by the first end of the sleeve body Extend towards the second end, the flute length of the expansion slot is more than 3/4ths of the length of the sleeve body.

In the utility model optional embodiment, the sleeve body is bent by connecting plate, the connecting plate packet Including first connecting portion and second connecting portion, the first connecting portion and the second connecting portion are located at the second end, and described the One interconnecting piece is with the second connecting portion along the circumferentially distributed in the both sides of the connecting plate, the first connecting portion of sleeve body Be fixedly connected with the second connecting portion, the junction of the first connecting portion and the second connecting portion with one of them described in Expansion slot corresponds to, and the first connecting portion is provided with connection bump, and the second connecting portion is provided with matches with the connection bump The connecting groove of conjunction, the connection bump are inserted in the connecting groove of the adjacent second connecting portion.

In the utility model optional embodiment, the expansion slot includes two dregs guiding grooves, described two dregs guiding groove edges The axial distribution of the sleeve body, the dregs guiding groove is axially extending along the sleeve body, and the dregs guiding groove is T-shaped knot Structure.

In the utility model optional embodiment, described two dregs guiding grooves are respectively the first slot and the second slot, and described For one slot relative to second slot close to the first end, the sleeve body is provided at least two groove groups, it is described at least Two groove groups are corresponded at least two expansion slot, and the groove group is along the circumferentially distributed in institute of the sleeve body The both sides of the first slot are stated, the groove group includes the antiskid groove that multiple axially spaced-aparts along the sleeve body are distributed.

In the utility model optional embodiment, first slot includes first segment and second segment, the first segment edge The sleeve body it is axially extending, the first segment be pyramidal structure, the width of the first segment is along the sleeve body Axial to be gradually reduced towards the second end by the first end, the second segment is connected to the first segment, the second segment Along the circumferentially extending of the sleeve body, the width of the second segment is more than the minimum widith of the first segment.

In the utility model optional embodiment, it is provided with marked area between adjacent two expansion slots, it is described Marked area is used to indicate the information of the sleeve body.

In the utility model optional embodiment, the sleeve body is opened up there are three expansion slot.

The embodiments of the present invention additionally provide one kind, including screw rod, gasket, tapered cup nut and above-mentioned expansion bolt Sleeve, the screw rod include head and screw body, and the gasket, the sleeve body and the tapered cup nut are arranged in successively The outside of the screw body, the gasket is relative to the tapered cup nut close to the head, the gasket and the sleeve Ontology is slidably connect with the screw body respectively, and the tapered cup nut is threadedly coupled with the screw body, the set Cylinder ontology is clamped with the tapered cup nut.

In the utility model optional embodiment, the tapered cup nut includes the first connecting pin and second connection end, institute The first connecting pin is stated relative to the second connection end close to the sleeve body, the diameter of first connecting pin is less than described The diameter of second connection end, first connecting pin are arranged in the inside of the sleeve body, and the internal diameter of the sleeve body is small In the diameter of the second connection end, first connecting pin is provided at least two spacing block sets, at least two limit Convex block and at least two expansion slot correspond, the spacing block set be located in the expansion slot and the spacing block set and The sleeve body clamping.

In the utility model optional embodiment, the first end is provided with limiting stand, and the limiting stand is located at described In expansion slot, the spacing block set is located in the expansion slot and the spacing block set coordinates with the limiting stand, the limit Platform is rotated for limiting the tapered cup nut relative to the sleeve body.

Compared with prior art, the beneficial effects of the utility model are：

Expansion bolt sleeve, reasonable in design, the flute length of the expansion slot of sleeve body setting is longer, substantially increases this The expansive force of expansion bolt sleeve and the expansion bolt of screw rod composition.

The expansion sleeve, using above-mentioned expansion bolt sleeve, during use, which has larger expansion Power, installation accuracy is high, improves connective stability；In addition, screw rod can be detached with tapered cup nut, tearing open after being easy to use It removes, avoids generating security risk.

Description of the drawings

It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structural schematic diagram for the expansion bolt sleeve that the utility model first embodiment provides；

Fig. 2 is Fig. 1 sectional views；

Fig. 3 is the structural schematic diagram of connecting plate；

Fig. 4 is the structural schematic diagram of the expansion slot of Fig. 1；

Fig. 5 is a kind of structural schematic diagram at the visual angle for the expansion bolt that the utility model second embodiment provides；

Fig. 6 is the structural schematic diagram at another visual angle for the expansion bolt that the utility model second embodiment provides；

Fig. 7 is the structural schematic diagram of the tapered cup nut of Fig. 5.

Icon：100- expansion bolt sleeves；200- expansion bolts；1- sleeve bodies；11- connecting plates；The connections of 111- first Portion；112- second connecting portions；113- connection bumps；114- connecting grooves；12- first ends；13- second ends；14- limiting stands；15- Guide part；2- expansion slots；The first slots of 21-；211- first segments；212- second segments；The second slots of 22-；221- third sections；222- the 4th Section；3- groove groups；31- antiskid grooves；The marked areas 4-；5- screw rods；The heads 51-；52- screw bodies；6- gaskets；7- taper spiral shells It is female；The first connecting pins 71-；711- spacing block sets；72- second connection ends.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all Belong to the range of the utility model protection.

It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put Relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in utility model.

First embodiment

Fig. 1 is please referred to, the present embodiment provides a kind of expansion bolt sleeves 100, including sleeve body 1.

As Figure 1-Figure 4, in the present embodiment, sleeve body 1 is fastened by the bending of connecting plate 11, sleeve body 1 Including the first end 12 being oppositely arranged and second end 13, the circumferential direction of sleeve body 1 offers at least two expansion slots 2, and at least two A expansion slot 2 is symmetrically distributed, and expansion slot 2 is extended by first end 12 towards second end 13 along the axial of sleeve body 1；Connection Plate 11 includes first connecting portion 111 and second connecting portion 112, and first connecting portion 111 is located at second end with second connecting portion 112 13, first connecting portion 111 is with second connecting portion 112 along the circumferentially distributed in the both sides of connecting plate 11, the first connection of sleeve body 1 Portion 111 is fixedly connected with second connecting portion 112, and first connecting portion 111 and the junction of second connecting portion 112 are swollen with one of them Swollen slot 2 corresponds to, and expansion slot 2 is extended to the junction of first connecting portion 111 and second connecting portion 112 by first end 12.With it is existing The sleeve of expansion bolt compare, the flute length of the expansion slot 2 of the expansion bolt sleeve 100 is more than the four of the length of sleeve body 1 / tri-, that is to say, that after the expansion bolt sleeve 100 cooperatively forms expansion bolt with screw rod, the expansive force of sleeve body 1 is big In existing expansion bolt.

The concrete structure to all parts of the expansion bolt sleeve 100 and mutual position relationship carry out detailed below It describes in detail bright.

In the present embodiment, which includes sleeve body 1, and sleeve body 1 is the tube structure of inner hollow, set Cylinder ontology 1 can be sheathed on the outside of screw rod, and with the composition expansion bolt such as screw rod, nut.As shown in Figure 1, sleeve body 1 is wrapped The first end 12 being oppositely arranged and second end 13 are included, axial direction of the first end 12 with second end 13 along sleeve body 1 is distributed, such as Fig. 2 Shown, sleeve body 1 includes taper guide part 15, and the thickness of guide part 15 is along the axial by 12 direction of first end of sleeve body 1 Second end 13 gradually increases, and the diameter for being equivalent to guide part 15 is gradually reduced by first end 12 towards second end 13.First end 12 For expansion rod (being equivalent to tapered cup nut, second embodiment proposes) connection with expansion bolt, second end 13 is used for and expansion Locking nut (being equivalent to the head of screw rod, second embodiment proposes) connection of bolt.

It should be pointed out that the quantity of connecting plate 11 is at least one, particular number user can be according to practical feelings Condition is chosen.

Sleeve body 1 offers at least two expansion slots 2, and at least two expansion slots 2 rotate in a circumferential direction pair along sleeve body 1 Claim, expansion slot 2 is extended by first end 12 towards second end 13 along the axial of sleeve body 1.It, should relative to existing expansion sleeve The flute length (length that is axially distributed of the expansion slot 2 along sleeve body 1) of expansion slot 2 be more than sleeve body 1 length four/ Three.It is equivalent to, the flute length of expansion slot 2 is far longer than the flute length of existing expansion sleeve, when the sleeve body 1 is sheathed on screw shaped After expansion bolt, during the work time, sleeve body 1 is easier to distending to expansion bolt, increases the expansive force of expansion bolt. It should be pointed out that the quantity of expansion slot 2 is at least two, user can choose the expansion of different number according to actual conditions Slot 2.

The flute length of expansion slot 2 is longer, and during use, 1 easier distending of sleeve body, the sleeve body 1 forms swollen The expansive force of swollen bolt is bigger.But long expansion slot 2 reduces the intensity of sleeve body 1, is easy to cause sleeve body 1 Fracture.Therefore, the flute length of expansion slot 2 should choose suitable length, and user can choose according to actual conditions, still, expansion 3/4ths of the flute length of slot 2 at least more than 1 length of sleeve body.

As the optional mode of the present embodiment, sleeve body 1 is opened up there are three expansion slot 2, and three expansion slots 2 are along sleeve sheet Rotating in a circumferential direction for body 1 is symmetrical.Sleeve body 1 is divided into three expansion cells by three expansion slots 2, when sleeve body 1 is sheathed on When screw rod forms expansion bolt, expanding screw embolism is set in preset hole (not marked in figure), rotates screw rod, and three expansion pieces are opposite In screw rod distending, play the role of expansion limit.

In the present embodiment, for the ease of the processing and manufacturing of sleeve body 1, sleeve body 1 is bent by connecting plate 11 and is detained Conjunction forms tubular structure.As shown in Figure 3 and Figure 4, connecting plate 11 includes first connecting portion 111 and second connecting portion 112, and first connects Socket part 111 is located at second end 13 with second connecting portion 112, and first connecting portion 111 is with second connecting portion 112 along sleeve body 1 The circumferentially distributed both sides in connecting plate 11 (are equivalent to, first connecting portion 111 is located at the width of connecting plate 11 with second connecting portion 112 Spend the both sides in direction), first connecting portion 111 is fixedly connected with second connecting portion 112 so that sleeve body 1 has certain company Connect intensity.The junction of first connecting portion 111 and second connecting portion 112 is with one of expansion slot 2 along the axial direction of sleeve body 1 Distribution, i.e., expansion slot 2 corresponding with junction extend to junction by first end 12, and the width of junction is sleeve body 1 The part of expansion slot 2 is removed in axial direction.In the present embodiment, the flute length of expansion slot 2 is far longer than width (the first company of junction Size of the connecting portion of socket part 111 and second connecting portion 112 in the axial direction of sleeve body 1) so that 1 group of the sleeve body At expansion bolt in work process, have stronger expansive force.

First connecting portion 111 is provided with connection bump 113, connection bump 113 along sleeve body 1 circumferentially extending, second Interconnecting piece 112 is provided with the connecting groove 114 coordinated with connection bump 113, and connection bump 113 is inserted in second connecting portion 112 Connecting groove 114 in, first connecting portion 111 and second connecting portion 112 are welded.First connecting portion 111 and second connecting portion 112 Structure setting, increase the bonding strength of two adjacent connecting plates 11.

Expansion slot 2 includes two dregs guiding grooves, and two dregs guiding grooves are along the axial direction distribution of sleeve body 1, and dregs guiding groove is along sleeve sheet Body 1 it is axially extending.The shape of dregs guiding groove can be diversified forms, and user can choose according to actual conditions.

In the present embodiment, dregs guiding groove is T-shaped structure, and the setting of dregs guiding groove can accommodate powder and clast, convenient for set Cylinder ontology 1 stretches into the hole of wall.Two dregs guiding grooves are respectively the first slot 21 and the second slot 22, and the first slot 21 is relative to the second slot 22 close to first end 12.

As shown in figure 4, the first slot 21 includes first segment 211 and second segment 212, axial direction of the first segment 211 along sleeve body 1 Extend, for first segment 211 relative to second segment 212 close to first end 12, first segment 211 is pyramidal structure, the width of first segment 211 Axial along sleeve body 1 is gradually reduced by first end 12 towards second end 13, and second segment 212 is connected to first segment 211, and second For section 212 along the circumferentially extending of sleeve body 1, the width of second segment 212 is more than the minimum widith of first segment 211.First slot 21 Structure setting so that when the sleeve body 1 is filled in the expansion bolt being combined into preset hole with screw rod, expansion rod, preset hole Interior powder and clast can be piled up in the first slot 21, it is convenient to omit the cleaning after preset hole punching, convenient for expansion The Fast Installation of bolt.

Sleeve body 1 is provided at least two groove groups 3, and at least two groove groups 3 and at least two expansion slot 2 one are a pair of It answers.In the present embodiment, there are three groove groups 3 for the setting of sleeve body 1.Groove group 3 is along the circumferentially distributed in first of sleeve body 1 The both sides of slot 21, groove group 3 include the antiskid groove 31 that multiple axially spaced-aparts along sleeve body 1 are distributed, and antiskid groove 31 is used In increasing the friction between sleeve body 1 and wall, prevent sleeve body 1 from being moved relative to wall in preset hole.

Second slot 22 includes third section 221 and the 4th section 222, and third section 221 is relative to the 4th section 222 close to the first slot 21, third section 221 is axially extending along sleeve body 1, and the 4th section 222 is connected to third section 221, and the 4th section 222 along sleeve sheet The circumferentially extending of body 1.The setting of second slot 22 increases the storage powder of expansion slot 2 and the storage of clast after 1 distending of chamber sleeve body Ability.

In the present embodiment, marked area 4 (as shown in Figure 4) is provided between two adjacent expansion slots 2, marked area 4 is used In the information for indicating sleeve body 1.For example, the specification etc. of the 1 corresponding nut of sleeve body and screw rod, user can be with Different information are indicated in marked area 4 according to actual conditions.

The operation principle of the utility model embodiment is：

The sleeve body 1 is bent into tube structure by connecting plate 11, and sleeve body 1 offers the axis along sleeve body 1 To the expansion slot 2 of extension, the length of expansion slot 2 is more than 3/4ths of the length of sleeve body 1, when the sleeve body 1 forms After expansion bolt, expansion bolt is easy to open in use, after 1 stress of sleeve body, improves the expansion of expansion bolt Power.Opening length relative to existing expansion bolt, the expansion bolt sleeve 100 is larger so that expansion bolt has relatively strong Expansive force.

Second embodiment

Fig. 5 is please referred to, a kind of expansion bolt 200, including screw rod 5, gasket 6, tapered cup nut 7 and are present embodiments provided The expansion bolt sleeve 100 that one embodiment provides.

As shown in Figure 5-Figure 7, in the present embodiment, screw rod 5 includes head 51 and screw body 52, and head 51 is outer-hexagonal Structure, screw body 52 is located at the side on head 51 and screw body 52 is integrally formed with head 51.Gasket 6, sleeve body 1 and Tapered cup nut 7 is arranged in the outside of screw body 52 successively, and gasket 6 is relative to tapered cup nut 7 close to head 51, gasket 6 and set Cylinder ontology 1 slidably connect with screw body 52 respectively, tapered cup nut 7 is threadedly coupled with screw body 52, sleeve body 1 and Tapered cup nut 7 is clamped.The structure of screw rod 5 is improved when the expansion bolt 200 in use, the head 51 of screw rod 5 is naked is exposed on the external The environmental beauty that expansion bolt 200 uses；Meanwhile screw rod 5 is threadedly coupled with tapered cup nut 7, in use, screw rod 5 can It detaches, is avoided after discarding with tapered cup nut 7, screw rod 5, which stretches out outside wall, causes security risk.

Tapered cup nut 7 is equivalent to the expansion rod in existing expansion bolt, and tapered cup nut 7 includes the first connecting pin 71 and second Connecting pin 72, relative to second connection end 72 close to sleeve body 1, the diameter of the first connecting pin 71 is less than for the first connecting pin 71 The diameter of two connecting pins 72, the inside that the first connecting pin 71 is arranged in sleeve body 1 (are equivalent to, guide part 15 is sheathed on first The outside of connecting pin 71), the internal diameter of sleeve body 1 is less than the diameter of second connection end 72.First connecting pin 71 is provided at least Two spacing block sets 711, at least two spacing block sets 711 and at least two expansion slots 2 correspond, and spacing block set 711 is located at In expansion slot 2, and spacing block set 711 is clamped with sleeve body 1.Tapered cup nut 7 is clamped with sleeve body 1, avoids the expansion Displacement is generated during 200 use of bolt so that the expansion bolt 200 has higher installation accuracy.

In the present embodiment, as shown in fig. 7, the first connecting pin 71 is arranged, there are three spacing block set 711, spacing block sets 711 In the first slot 21.First end 12 is provided with limiting stand 14, and limiting stand 14 is located in expansion slot 2 (the first slot 21), limit convex Block 711 coordinates with limiting stand 14, and limiting stand 14 is rotated for limiting tapered cup nut 7 relative to sleeve body 1.It is equivalent to, limits Convex block 711 is located at the open end of expansion slot 2, and spacing block set 711 and the first slot 21 coordinate, and limit the movement of spacing block set 711.Limit The setting of position convex block 711 can prevent tapered cup nut 7 from being rotated relative to wall when expansion bolt 200 works.

The operation principle of the utility model embodiment is：

Gasket 6, sleeve body 1 and tapered cup nut 7 are sheathed on the outside of screw body 52 successively, gasket 6 close to head 51, When using the expansion bolt 200, preset hole is first bored on wall, by an end plug of the close tapered cup nut 7 of screw body 52 Enter in preset hole so that tapered cup nut 7 enters the inside (tapered cup nut 7 is abutted with the bottom hole wall of preset hole) of preset hole, turns Dynamic screw body 52 makes the rotation of screw body 52 exit preset hole, part to be fixed is sheathed on outside screw body 52, by screw rod Ontology 52 is filled in preset hole, and is threadedly coupled fixation with tapered cup nut 7.The expansion bolt 200 has larger during use Expansive force, installation accuracy is high, improves the connective stability of expansion bolt 200；In addition screw rod 5 can divide with tapered cup nut 7 From the dismounting after being easy to use avoids discarded expansion bolt 200 from generating security risk.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention can be tied mutually It closes.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims

1. a kind of expansion bolt sleeve, which is characterized in that including sleeve body, the sleeve body is the cylinder knot of inner hollow Structure, the sleeve body include the first end and second end being oppositely arranged, and the first end is with the second end along the sleeve The axial distribution of ontology, the sleeve body offer at least two expansion slots, and at least two expansion slot is along the sleeve Rotating in a circumferential direction for ontology is symmetrical, and the expansion slot is prolonged by the first end towards the second end along the axial of the sleeve body It stretches, the flute length of the expansion slot is more than 3/4ths of the length of the sleeve body.

2. expansion bolt sleeve according to claim 1, which is characterized in that the sleeve body by connecting plate bend and At the connecting plate includes first connecting portion and second connecting portion, and the first connecting portion is located at institute with the second connecting portion Second end is stated, the first connecting portion is with the second connecting portion along the circumferentially distributed in the two of the connecting plate of sleeve body Side, the first connecting portion are fixedly connected with the second connecting portion, the company of the first connecting portion and the second connecting portion It is corresponding with expansion slot described in one of them to meet place, the first connecting portion is provided with connection bump, the second connecting portion setting There are the connecting groove coordinated with the connection bump, the connection bump to be inserted in the company of the adjacent second connecting portion It connects in groove.

3. expansion bolt sleeve according to claim 1, which is characterized in that the expansion slot includes two dregs guiding grooves, institute Axial direction distribution of two dregs guiding grooves along the sleeve body is stated, the dregs guiding groove is axially extending along the sleeve body, described Dregs guiding groove is T-shaped structure.

4. expansion bolt sleeve according to claim 3, which is characterized in that described two dregs guiding grooves be respectively the first slot and Second slot, for first slot relative to second slot close to the first end, it is recessed that the sleeve body is provided at least two Slot group, at least two grooves group are corresponded at least two expansion slot, and the groove group is along the sleeve body It is circumferentially distributed in the both sides of first slot, the groove group includes that multiple axially spaced-aparts along the sleeve body are distributed Antiskid groove.

5. expansion bolt sleeve according to claim 4, which is characterized in that first slot includes first segment and second Section, the first segment is axially extending along the sleeve body, and the first segment is pyramidal structure, the width edge of the first segment The axial direction of the sleeve body is gradually reduced by the first end towards the second end, and the second segment connects with the first segment Logical, for the second segment along the circumferentially extending of the sleeve body, the minimum that the width of the second segment is more than the first segment is wide Degree.

6. expansion bolt sleeve according to claim 1, which is characterized in that be arranged between two adjacent expansion slots There are marked area, the marked area to be used to indicate the information of the sleeve body.

7. expansion bolt sleeve according to claim 1, which is characterized in that the sleeve body open up there are three expansion Slot.

8. a kind of expansion bolt, which is characterized in that described in screw rod, gasket, tapered cup nut and claim 1-7 any one Expansion bolt sleeve, the screw rod includes head and screw body, the gasket, the sleeve body and the tapered cup nut It is arranged in the outside of the screw body successively, the gasket is relative to the tapered cup nut close to the head, the gasket And the sleeve body is slidably connect with the screw body respectively, the tapered cup nut connects with the screw body screw thread It connects, the sleeve body is clamped with the tapered cup nut.

9. expansion bolt according to claim 8, which is characterized in that the tapered cup nut includes the first connecting pin and second Connecting pin, first connecting pin relative to the second connection end close to the sleeve body, first connecting pin it is straight Diameter is less than the diameter of the second connection end, and first connecting pin is arranged in the inside of the sleeve body, the sleeve sheet The internal diameter of body is less than the diameter of the second connection end, and first connecting pin is provided at least two spacing block sets, it is described extremely Few two spacing block sets are corresponded at least two expansion slot, and the spacing block set is located in the expansion slot and described Spacing block set is clamped with the sleeve body.

10. expansion bolt according to claim 9, which is characterized in that the first end is provided with limiting stand, the limit Platform is located in the expansion slot, and the spacing block set is located in the expansion slot and the spacing block set is matched with the limiting stand It closes, the limiting stand is rotated for limiting the tapered cup nut relative to the sleeve body.