CN209324822U

CN209324822U - Eccentric expansion bolt

Info

Publication number: CN209324822U
Application number: CN201821861006.8U
Authority: CN
Inventors: 裴飞扬; 裴俊; 段姣玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-13
Filing date: 2018-11-13
Publication date: 2019-08-30
Anticipated expiration: 2028-11-13

Abstract

The utility model provides a kind of eccentric expansion bolt, by expansion-head, screw rod, casing, gasket, spring washer, nut composition, it is characterised in that not in same axle center, screw rod is in eccentric state for screw rod and casing；The utility model is novel, simple process, and eccentric structure brings the innovation of function, and effectively anti-rotational and adjustment mounting hole spacing greatlys improve working efficiency, can be applied to big machinery installation, road and rail, building, bridge etc.；Based on this eccentric notable feature, it may make the structure of bolt itself ever-changing, to obtain more extensive purposes.

Description

Eccentric expansion bolt

Technical field

The utility model relates to one of expansion bolt technical field bolt, in particular to a kind of eccentric expansion bolt.

Background technique

Traditional expansion bolt is widely used in people's production and living, with China's economic sustainable development, overall national strength Become stronger day by day, the industries such as industry, highway, railway, building all rank among world forefront, and consequent is new equipment, new process, new Technology, new material emerge one after another, so that traditional expansion bolt application range is smaller and smaller, attempt to solve with conventional bolt all Installation question be impossible；People need to install more convenient and fast expansion bolt in production and living, need to install more firm Expansion bolt, need the wider expansion bolt of purposes to hold in conclusion the present inventor is dedicated to the invention of expansion bolt The bright upset bolt of supervention, to make up the deficiencies in the prior art, any bolt is also not omnipotent again, more novel knot The more professional purposes of structure is only the future of this technology sustainable development of expansion bolt.

Summary of the invention

The utility model provides a kind of eccentric expansion bolt, to overcome the deficiencies in the prior art under different structure.

The technical solution of the utility model is:

1. the eccentric expansion bolt is by expansion-head, screw rod, casing, gasket, spring washer, nut composition；Its feature exists In screw rod and casing not in same axle center, screw rod is in eccentric state, and casing can be thin-wall tube or eccentric pipe etc.；When with thin-wall tube When for casing, several slots are opened in thin-wall tube upper end, make upper end expansible, and lower end inwardly has several limitation screw rods at the limit of eccentric state System protrusion；When using eccentric pipe as casing, due to bias, so that the wall thickness of pipe is in thin and thick transition, thick part is not easy to open, therefore Eccentric pipe upper end fluting, and in the distal aperture of slot, it is referred to as the weakening hole for being easy to open；

2. preferably, eccentric expansion Bolt sizes are bigger, when using eccentric pipe as casing, the part of thickness of pipe wall is thicker, When using big specification heavy type eccentric expansion bolt, since the extruding force needed for expanding is very big, decentralized casing is using skills such as cuttings Art means open casing easily；Or bilayer sleeve is used, outer ring is thin wall casing, interior plus decentralized casing；Or in thin wall casing, Upper section has the scattered block combination of expansion, and lower section is that eccentric contract block limits screw rod bias, is easy to stress opening so that expanding and dissipating block；

3. preferably, expansion-head is not eccentric, screw rod upper end is that crankshaft shape is connect with expansion-head；

4. preferably, expansion-head has internal screw thread, cooperate with full flight screw, referred to as interior expansion；

5. preferably, expansion-head is squash type expansion-head, upper section opens several slots and is easy to squeeze the hole of opening in casing；

6. preferably, casing section, upper section is thin-wall tube, and lower section is decentralized casing or upper section is decentralized casing, and lower section is The thin-wall tube of the restricted protrusion of inner wall, to reduce cost；

7. preferably, casing is thin-wall tube, with eccentric contract block or item limitation screw rod in eccentric shape in pipe；

8. preferably, casing is thin-wall tube, lower end is eccentric with step eccentric washer limitation screw rod；

9. preferably, eccentric expansion head inclined-plane there are several protrusions, agree with several slots of casing；

The utility model is novel, simple process, and eccentric structure brings the innovation of function, effectively anti-rotational and adjustment Mounting hole spacing greatlys improve working efficiency, can be applied to big machinery installation, road and rail, building, bridge etc.；With bias Based on this notable feature, it may make the structure of bolt itself ever-changing, to obtain more extensive purposes.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawings and examples

Fig. 1 is the structural schematic diagram of the utility model

Fig. 2 is the heavy eccentric expansion bolt explosive view of the utility model

Fig. 3 is the thin-wall tube mode structure chart of the utility model

Fig. 4 is the thin-wall tube sectional view of the utility model

Fig. 5 is the eccentric pipe mode structure chart of the utility model

Fig. 6 is the thin-wall tube mode sectional view of the utility model

Fig. 7 is expansion fashion sectional view in the thin-wall tube of the utility model

Fig. 8 is the eccentric pipe mode sectional view of the utility model

Fig. 9 is expansion fashion sectional view in the eccentric pipe of the utility model

Figure 10 is the crankshaft approach screw sectional view of the utility model

Figure 11 is the squash type structure chart of the utility model

Figure 12 is the squash type working state figure of the utility model

Figure 13 is that the casing section of the utility model combines A structure chart

Figure 14 is that the casing section of the utility model combines B structure figure

Figure 15 is the step eccentric washer figure of the utility model

Figure 16 is two sectional views being applied in combination of the utility model

Figure 17 is the multiple sectional views being applied in combination of the utility model

Appended drawing reference indicates are as follows: 1- expansion-head, 2- screw rod, and 3- notch, 4- thin wall casing, 5- limitation protrusion, second group of 6- Limitation protrusion, 7- gasket, 8- spring washer, 9- nut, 10- decentralized casing, 11- weaken hole, 12- crankshaft screw rod, 13- full thread Screw rod, expansion-head in 14-, 15- thin wall casing section, 16- decentralized casing section, section on 17- segmented decentralized casing, 18- Section under segmented thin wall casing, section on 19- segmented thin wall casing, section under 20- segmented decentralized casing, 21- are squeezed Formula expansion-head, the middle section 22- fluting thin wall casing, the short limiting boot of 23-, 24-, which expands, dissipates block, 25- bias contract block, 26- porthole, 27- steel plate mounting hole, 28- steel plate, 29- combine mounting hole, 30- eccentric expansion bolt.

Specific embodiment

In order to fully understand the structure and effect of the utility model, the preferred implementation of the utility model is described with reference to the accompanying drawings Example.

As shown in figure 16, this example illustrates that two eccentric expansion bolts when installing one block of steel plate, check and balance, magical ground gram It takes that hole has been beaten big or wall loosely causes bolt to rotate integrally, can not be fastened, done by other by single tool The modes such as method, such as clamping screw, certainly, this example also illustrate eccentric expansion bolt hole away from adjustable；Steel plate 28 is provided with installation Hole 27, aperture are greater than screw diameter, and wall beats porthole 26, and wall aperture is greater than the eccentric expansion diameter of bolt, such as the mounting hole of figure Away from the pitch-row for being less than wall；One, fastening right side at this time, whole support bolt attempts rotation, and due to eccentric effect, rotation just must Drive steel plate to turn right movement, and the screw rod in left side located steel plate make its can not toward moving right, thus fastening be able to smoothly into Row；This just overcomes the expansion bolt rotation often said, certainly, the pitch-row of wall must be greater than or less than steel plate installation Pitch-row, otherwise can not mutually restrain, at this time can the stabilized steel plate of external force human intervention, still can make its fasten Shi Buxuan Turn；This explanation, it is intended to state the preferred working principle of eccentric expansion bolt, people can lift one in production and living Anti- three, well using this eccentric structure formed bolt between mutual containing, overcome bolt due to wall to friction Power not enough and caused by rotate.

Here by taking more figures as an example, illustrate eccentric expansion bolt preferably several structures:

1, Fig. 2 can be used when eccentric expansion bolt is bigger for the heavy eccentric expansion bolt explosive view of the utility model The mode of bilayer sleeve, in thin wall casing 4, the part for needing to expand above, which increases to expand, dissipates block 24, and here is eccentric contract block 25, this combination, the expansion of upper part dissipates block 24 due to not being integral with eccentric contract block 25, so being easy to be squeezed It opens；

2, Fig. 3 be the thin-wall tube mode structure chart of the utility model, can refer to the thin-wall tube mode sectional view of Fig. 6, inwardly Limitation protrusion in a manner of punching press etc., the cross sectional shape after punching press is shown in Fig. 4, and three protrusions limit screw rod 2 in bias well Shape, such structure are low in cost；

3, Fig. 5 be the eccentric pipe mode structure chart of the utility model, can refer to the eccentric pipe mode sectional view of Fig. 8, here Decentralized casing wall thickness from left to right gradually increase, the advantages of this frame mode, is, thick wall part increases opening angle, When materials for wall intensity is smaller, installation reliability is improved；

4, as Fig. 7 thin-wall tube in expansion fashion sectional view, such bias in the eccentric pipe of expansion fashion sectional view and Fig. 9 Structure can also interior expansion, the in this way popularity of raising application；

5, Figure 10 be the crankshaft approach screw sectional view of the utility model, and expansion-head and casing at this time is concentric, screw rod end End is eccentric, as long as punching press conventional expanded screw rod, such structure or can reduce cost；

6, such as the squash type structure chart of Figure 11 and the squash type working state figure of Figure 12, expansion-head at this time is actually one flat Cylindrical body, middle section fluting thin wall casing 22 can open several slots, and the quantity of fluting can be adjusted according to bolt specification, as long as reaching by crowded Press the purpose easily opened；

7, the casing section as the casing section of Figure 13 combines A structure chart and Figure 14 combines B structure figure, it is obvious that these Combination is cost-saved, also can do the adjustment combined according to different use environments, for another example the step bias pad of Figure 15 Piece, when using thin wall casing, tube wall not punching press limitation protrusion, end increases a step eccentric washer and also may be used.

The multiple embodiments being applied in combination of the utility model of Figure 17 are stressed below, it is assumed that figure is certain equipment in wall Installation, equipment are mounted with four eccentric expansion bolts there are four hole, as shown, four hole locations of wall with the peace of equipment Hole location is filled to deviate, however screw rod can be still aligned with the combination mounting hole 29 of equipment, this allows for eccentric structure and is pacifying more Filling has great adjustment hole away from function in the equipment in hole, while more eccentric expansion bolt combinations are used and also preferably mutually led System, overcome bolt as wall to frictional force not enough and caused by rotation；The industries such as industry, building, road and bridge, are often related to To same equipment there are multiple mounting holes, mostly overcomes expansion bolt punch position at this time with the technological means such as long hole or plagioclase hole Offset, however these technological means do not well solve problem in actual installation；And it is empty also to there is installation hole location Between it is narrow, bolt does not obtain enough frictional force when fastening and rotation, narrow space can not implement multiple tool combinations Overcome rotation；The high altitude operation such as outdoor installation of air conditioning bracket for another example, punching often will appear deviation, and high altitude operation requirement The property easy to install of expansion bolt is more preferable, at this time check and balance it is anti-rotational seem particularly convenient, bias makes section tubular wall in addition Increase thickness, also to install stronger safer.

It is illustrated above and describe the preferred embodiment of the utility model, but the utility model be not limited to it is above-mentioned Specific embodiment, the utility model those of ordinary skill in the art can complete the implementation of various modifications, and must not be detached from Claimed invention main idea in interest field.

Claims

1. a kind of eccentric expansion bolt, by expansion-head, screw rod, casing, gasket, spring washer, nut composition；It is characterized in that spiral shell Not in same axle center, screw rod is in eccentric state for bar and casing, and casing is thin-wall tube or eccentric pipe；It is thin using thin-wall tube as casing Several slots are opened in wall pipe upper end, and lower end inwardly has several limitation screw rods at the limitation protrusion of eccentric state, using eccentric pipe as casing, partially It slots and opens the weakening hole for making pipe upper end be easy to open in heart pipe upper end.

2. eccentric expansion bolt according to claim 1, it is further characterized in that, big specification heavy type eccentric expansion bolt is eccentric Casing opens casing easily using technological means such as cuttings；Or outer ring is thin wall casing, interior plus decentralized casing；Or thin wall casing Interior, upper section has expansion to dissipate block, and lower section is eccentric contract block.

3. eccentric expansion bolt according to claim 1, it is further characterized in that, expansion-head is not eccentric, and screw rod upper end is song Shaft-like is connect with expansion-head.

4. eccentric expansion bolt according to claim 1, it is further characterized in that, expansion-head has internal screw thread, with full thread spiral shell Bar cooperation.

5. eccentric expansion bolt according to claim 1, it is further characterized in that, expansion-head is squash type expansion-head, casing Middle upper section opens several slots and is easy to squeeze the hole of opening.

6. eccentric expansion bolt according to claim 1, it is further characterized in that, casing section, upper section is thin-wall tube, lower section It is decentralized casing for decentralized casing or upper section, lower section is the thin-wall tube of the restricted protrusion of inner wall.

7. eccentric expansion bolt according to claim 1, it is further characterized in that, casing is thin-wall tube, with eccentric contract in pipe Block or item limitation screw rod are in eccentric shape.

8. eccentric expansion bolt according to claim 1, it is further characterized in that, casing is thin-wall tube, and lower end is with step It is eccentric that eccentric washer limits screw rod.

9. eccentric expansion bolt according to claim 1, it is further characterized in that, there are several protrusions on eccentric expansion head inclined-plane, Agree with several slots of casing.