CN112160963B - Anchor bolt and support connection structure - Google Patents
Anchor bolt and support connection structure Download PDFInfo
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- CN112160963B CN112160963B CN202011166061.7A CN202011166061A CN112160963B CN 112160963 B CN112160963 B CN 112160963B CN 202011166061 A CN202011166061 A CN 202011166061A CN 112160963 B CN112160963 B CN 112160963B
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- section
- bolt
- anchor bolt
- head
- support
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- 230000010354 integration Effects 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 238000010008 shearing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anchoring bolt and a support connecting structure. The screw rod comprises a head and a screw rod which are connected in an integrated manner, the screw rod comprises a first section and a second section which are coaxially arranged, the first section is connected between the head and the second section, the surface of the first section is a smooth surface, the surface of the second section is a threaded surface, the thickness K of the head is 0.3-0.5M, the diameter R of the first section is M + 4-6 mm, the length H of the first section is 1.5-2.5M, the length L of the second section is 1.5-2.5M, and the diameter M of the second section is. According to the invention, the size structure of each part of the bolt is reasonably optimized, and the thickness of the head of the bolt is reduced, so that the replacement space of the support bolt can be reduced, and the size of the support is convenient to optimize; the length proportion of the polished rod and the threaded part of the screw is designed, so that the stress of each bolt can be ensured to be more reliable, and the service life and the reliability are greatly increased.
Description
Technical Field
The invention belongs to the technical field of mechanical parts, and particularly relates to an anchor bolt and support connecting structure.
Background
Most structures on the bridge support are connected through bolts, and the bolts bear pure shear stress. The head of the existing connecting bolt is designed to be larger in thickness, which is generally 0.6 times of the nominal diameter of the bolt, a larger replacing space is needed when the bolt is replaced, and the size of a corresponding support is larger, which is not beneficial to the position layout of a connecting part; meanwhile, the length proportion of the polish rod and the thread of the screw rod is small, when the bolt is connected with the support, the sleeve and other parts, the thread part can bear horizontal shearing force, when the thread section bears the shearing force, the diameter reduction after thread machining needs to be considered, the effective sectional area of the thread is related to the thread pitch of the thread, and the effective sectional area of the bolt commonly used for the anchoring support is approximately 75 to 85 percent of that of the polish rod screw rod. The bolt locking measure commonly used at present adopts bullet pad locking, and locking principle plays locking purpose for the deformation of bullet pad provides the pretightning force for the bolt, because the pretightning force that the bullet pad provided is limited, and bridge beam supports anchor bolt is under long-term vibrations operating mode, appears not hard up problem easily, and when the bolt nominal diameter was greater than M48, conventional bullet pad was not suitable for moreover.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide an anchoring bolt and a support connecting structure which are simple in structure and reliable in stress.
The technical scheme adopted by the invention is as follows: the utility model provides an anchor bolt, includes head and the screw rod that the integration is connected, the screw rod includes first section and the second section of coaxial arrangement, and first section is connected between head and second section, first section surface is the smooth surface, second section surface is the helicoid, head thickness K is 0.3-0.5M for K, first section diameter R is M +4~6mm for R, first section length H is 1.5-2.5M for H, second section length L is 1.5-2.5M for L, M is second section diameter.
Further, the head thickness K is 0.4M.
Further, the first section diameter R is M +5 mm.
Further, the first segment length H is H ═ 2M.
Further, the second segment length L is L ═ M.
And a fastening area with inclined tooth surfaces is arranged on one side of the head connected with the first section, and the washer penetrates through the second section and the first section to be matched with the fastening area.
Further, the fastening zone thickness G is 1-8 mm.
Furthermore, the inclined surface inclination angle of the inclined tooth surface of the fastening area and the radial direction of the bolt form an angle alpha, the thread inclination angle of the thread surface of the second section is an angle beta, and the angle alpha is larger than the angle beta.
Furthermore, one side surface of the gasket is an inclined tooth surface matched with the fastening area, and the other side surface of the gasket is a radial convex grain surface.
The utility model provides a support connection structure, includes the roof beam body, support and pier, still includes as above-mentioned arbitrary anchor bolt, the support top surface passes through anchor bolt is connected with the roof beam body bottom surface, the support bottom surface passes through anchor bolt is connected with the pier top surface.
According to the invention, the size structure of each part of the bolt is reasonably optimized, the thickness of the bolt head is designed to be less than or equal to half of the diameter of the thread part, and the thickness of the bolt head is reduced, so that the replacement space of the support bolt can be reduced, and the size of the support is convenient to optimize; the length proportion of a polished rod and a threaded part of the screw is designed, when the bolt is connected with a support, a sleeve and other parts, the joint is a shaft lever stress structure, a common bolt thread shear structure is replaced, and the stress of each bolt can be ensured to be more reliable; meanwhile, the threaded part only plays a role in connection, does not bear horizontal shearing force, and greatly prolongs the service life and reliability; the inclined tooth surface of the fastening area needs to be matched with a gasket with the inclined tooth surface, so that the self-locking and anti-loosening purposes are achieved, the anti-loosening effect is good, and the adverse effect of bolt failure caused by bolt loosening is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a partial schematic view of a second section of the screw of the present invention.
Fig. 3 is a partial longitudinal cross-sectional view of a fastening region of the present invention.
Fig. 4 is a side view of the gasket of the present invention.
Fig. 5 is another side view of the gasket of the present invention.
Fig. 6 is a partial longitudinal cross-sectional view of a gasket of the present invention.
Fig. 7 is a schematic view of a stand connecting structure of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-6, the present invention provides an anchor bolt, comprising a head 1 and a threaded rod which are integrally connected, wherein the radial section of the head 1 can be an equilateral pentagon, hexagon or other polygon structure, the threaded rod comprises a first section 2 and a second section 3 which are coaxially arranged, the first section 2 is connected between the head 1 and the second section 3, the surface 2.1 of the first section 2 is a smooth surface, namely the first section 2 is a polished rod part, and the surface 3.1 of the second section 3 is a threaded surface, namely the second section 3 is a threaded part. The thickness K of the head part 1 is 0.3-0.5M, the diameter R of the first section 2 is M + 4-6 mm, the length H of the first section 2 is 1.5-2.5M, the length L of the second section 3 is 1.5-2.5M, and M is the diameter of the second section 3. The whole bolt is subjected to corrosion prevention treatment by adopting multi-element alloy co-permeation and sealing layers, and the use requirement of the support can be met.
The bolt further comprises a washer 5, a fastening area 4 with an inclined tooth surface is arranged on one side, connected with the first section 2, of the head 1, the washer 5 penetrates through the second section 3 and the first section 2 to be matched with the fastening area 4, and the thickness G of the fastening area 4 is 3-5 mm. The inclined surface inclination angle of the inclined tooth surface 4.1 of the fastening area 4 and the radial direction of the bolt form an alpha angle, the thread tooth inclination angle of the thread surface of the second section 3 is a beta angle, and the alpha angle is larger than the beta angle. One side surface of the gasket 5 is an inclined tooth surface 5.1 matched with the fastening area, and the other side surface of the gasket 5 is a radial convex grain surface 5.2.
According to the invention, the size structure of each part of the bolt is reasonably optimized, the thickness of the bolt head is designed to be less than or equal to half of the diameter of the thread part, and the thickness of the bolt head is reduced, so that the replacement space of the support bolt can be reduced, and the size of the support is convenient to optimize; the length proportion of a polished rod and a thread part of the screw is designed, when the bolt is connected with a support, a sleeve and other parts, the joint is a shaft lever stress structure, a common bolt thread shear-resistant structure is replaced, and the stress of each bolt can be ensured to be more reliable; meanwhile, the threaded part only plays a role in connection, does not bear horizontal shearing force, and greatly prolongs the service life and reliability; the inclined tooth surface of the fastening area needs to be matched with a gasket with the inclined tooth surface, so that the self-locking and anti-loosening purposes are achieved, the anti-loosening effect is good, and the adverse effect of bolt failure caused by bolt loosening is reduced.
In the above embodiment, the thickness K of the head 1 is preferably 0.4M. The bolt that uses under the operating mode that shears, suitable reduction bolt head thickness can not influence the safe handling of bolt, simultaneously, reduces when bolt head thickness, can reduce the total length of bolt, when support mounting, change, the installation of bolt and when taking out the space and receiving the restriction, the reduction of bolt length provides the advantage to convenient construction, and then provides the advantage to support height dimension's optimization.
In the above embodiment, the diameter R of the first section 2 is preferably M +5 mm. The diameter of the polished rod screw is slightly larger than the nominal diameter of the thread, so that the processing difficulty of the inner thread of the anchor rod matched with the bolt is reduced under the condition of ensuring the safe use of the bolt, and meanwhile, the nominal diameter of the thread is reduced, and the installation precision of the bolt can be effectively improved.
In the above embodiment, the length H of the first segment 2 is preferably H ═ 2M. When the length of the polished rod screw is set to be about twice of the nominal diameter of the thread, the most of the horizontal shearing force of the support can be ensured to be resisted by the polished rod screw section.
In the above embodiment, the length L of the second segment 3 is preferably L ═ M. The length of the thread section is the nominal diameter of the thread, so that the connection strength of the thread can be effectively ensured.
In the above embodiment, the thickness G of the fastening region 4 is preferably 1 to 8mm, and more preferably 3 to 5 mm. According to the difference of bolt screw thread nominal diameter, design suitable bolt pretightning force separately to reach the locking effect of bolt auto-lock, through examining the calculation, according to the difference of screw thread nominal diameter, when the skewed tooth height is 1 ~ 3mm, locking effect and the effect of the artifical bolt of unscrewing are the best, set up 2 mm's non-skewed tooth thickness, are favorable to the distribution of bolt head stress, to sum up, 4 thickness G in fastening area is 3 ~ 5mm for G is comparatively suitable.
In the scheme, the lower surface of the preferable matched washer 5 is a radial convex grain surface, so that the lower surface of the matched washer can be effectively meshed with the support plate, and the bolt is prevented from rotating along with the bolt in the loosening process.
In the scheme, the angle of the inclined surface alpha of the optimized inclined tooth surface 4.1 is larger than the angle of the inclined surface beta of the thread, when the bolt generates a loosening tendency in a vibration environment, the inclined tooth surface of the bolt head and the inclined tooth surface of the matched washer are relatively staggered, and because the angle of the inclined tooth surface alpha is larger than the angle of the inclined thread beta, the bolt can generate tension in the loosening process, so that the bolt is prevented from being further loosened, and the purpose of loosening prevention and self locking is achieved.
When the support height is fixed, anchor bolt department, vertical high space is certain, the bolt installation, when taking out, need unscrew the bolt, when the bolt overall length is too long, anchor bolt's bolt head often contacts with other structures of support easily, thereby influence anchor bolt's smooth unscrewing, in the practical design, in order to solve this problem, the solution commonly used is exactly the overall height that increases the support, and then increase the vertical space of anchor bolt department, the direct result that this kind of scheme leads to is because the increase of support height and then leads to support weight to increase, cause the extravagant condition of resource. Meanwhile, the increase of the weight of the support increases the difficulty of the installation, replacement and other constructions of the support.
Aiming at the problem of bolts for connecting the existing support, the invention also provides a support connecting structure, as shown in fig. 7, which comprises a support 7, a beam body 8 and an abutment 9, wherein the top surface of the support 7 is connected with the supporting structure on the bottom surface of the beam body 8 through the anchoring bolts 6, and the bottom surface of the support 7 is connected with the top surface of the abutment 9 through the anchoring bolts 6.
The size and the structure of the anchor bolt are reasonably designed, and when the support 7, the beam body 8 and the abutment 9 are connected through the anchor bolt 6, the size and the weight of the support can be reduced due to the small length and the small taking-out space of the anchor bolt, so that the cost is reduced, and the optimization of the size of the bolt also facilitates the construction of the support; meanwhile, the cross section of the bolt is changed into the shearing resistance of the shaft lever, so that the diameter size of the bolt can be reduced, the cost is reduced, the stress borne by the bolt is reduced, the threaded part only plays a role in connection, the horizontal shearing force is not borne, and the service life and the reliability are greatly improved. The top surface and the bottom surface of the support are in plane contact with the beam bottom and the abutment pad respectively to form a shear surface, when the round section range of the bolt shaft rod just contains the shear section, the horizontal shear force of the support is directly transmitted to the beam body or a connecting piece in the abutment pad through the shaft rod at the shear section, and the purpose of force transmission is achieved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. The utility model provides an anchor bolt for bridge beam supports, includes head (1) and the screw rod that the integration is connected, the screw rod includes first section (2) and second section (3) of coaxial arrangement, and first section is connected between head (1) and second section (3), first section (2) surface is the smooth surface, second section (3) surface is the screw thread face, its characterized in that: the thickness K of the head (1) is K =0.3-0.5M, the diameter R of the first section (2) is R = M + 4-6 mm, the length H of the first section (2) is H = 1.5-2.5M, the length L of the second section (3) is L = M, and M is the diameter of the second section (3).
2. The anchor bolt for a bridge bearing according to claim 1, wherein: the head (1) has a thickness K = 0.4M.
3. The anchor bolt for a bridge bearing according to claim 1, wherein: the first section (2) has a diameter R = M +5 mm.
4. The anchor bolt for a bridge bearing according to claim 1, wherein: the length H of the first segment (2) is H = 2M.
5. The anchor bolt for a bridge bearer according to claim 1, wherein: the head is characterized by further comprising a gasket (5), a fastening area (4) with an inclined tooth surface is arranged on one side, connected with the first section, of the head (1), and the gasket (5) penetrates through the second section and the first section to be matched with the fastening area (4).
6. The anchor bolt for a bridge bearing according to claim 5, wherein: the fastening zone (4) has a thickness G of G =1-8 mm.
7. The anchor bolt for a bridge bearing according to claim 5, wherein: the inclined surface inclination angle of the inclined tooth surface of the fastening area (4) and the radial direction of the bolt form an alpha angle, the inclined angle of the thread tooth of the thread surface of the second section (3) is a beta angle, and the alpha angle is larger than the beta angle.
8. The anchor bolt for a bridge bearing according to claim 5, wherein: one side surface of the gasket (5) is an inclined tooth surface matched with the fastening area, and the other side surface of the gasket is a radial convex grain surface.
9. The utility model provides a support connection structure, includes the roof beam body, support and pier, its characterized in that: the bridge bearing of any one of claims 1 to 8, further comprising an anchor bolt, wherein the top surface of the bearing is connected with the bottom surface of the beam body through the anchor bolt, and the bottom surface of the bearing is connected with the top surface of the abutment through the anchor bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166061.7A CN112160963B (en) | 2020-10-27 | 2020-10-27 | Anchor bolt and support connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166061.7A CN112160963B (en) | 2020-10-27 | 2020-10-27 | Anchor bolt and support connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112160963A CN112160963A (en) | 2021-01-01 |
| CN112160963B true CN112160963B (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011166061.7A Active CN112160963B (en) | 2020-10-27 | 2020-10-27 | Anchor bolt and support connection structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN112160963B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030219328A1 (en) * | 2002-05-23 | 2003-11-27 | Dennis Schultz | Light weight fastener for use on interference fits in automation |
| CN206513683U (en) * | 2017-02-14 | 2017-09-22 | 东莞市三标汽车配件有限公司 | One kind is used for engine or seat hexagonal flange |
| CN108533601A (en) * | 2018-04-20 | 2018-09-14 | 梁智 | A kind of self-locking screw |
| CN108487052A (en) * | 2018-05-07 | 2018-09-04 | 武汉市三江新桥技术有限公司 | A kind of anchor and ball-shaped height-adjusting support of ball-shaped height-adjusting support |
| CN209925396U (en) * | 2018-12-25 | 2020-01-10 | 天津市天龙得冷成型部件有限公司 | Bearing surface projection welding bolt |
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2020
- 2020-10-27 CN CN202011166061.7A patent/CN112160963B/en active Active
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| CN112160963A (en) | 2021-01-01 |
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