CN110735832A - bidirectional balance positioning back bolt structure and mounting method thereof - Google Patents
bidirectional balance positioning back bolt structure and mounting method thereof Download PDFInfo
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- CN110735832A CN110735832A CN201810806521.4A CN201810806521A CN110735832A CN 110735832 A CN110735832 A CN 110735832A CN 201810806521 A CN201810806521 A CN 201810806521A CN 110735832 A CN110735832 A CN 110735832A
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- head screw
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 abstract description 8
- 238000011900 installation process Methods 0.000 abstract description 6
- 241000425571 Trepanes Species 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0258—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using resiliently deformable sleeves, grommets or inserts
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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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a bidirectional balance positioning back bolt structure and an installation method thereof, wherein the structure comprises a countersunk screw rod arranged in a back bolt hole, the back bolt hole comprises a straight hole part at the outer end and a hole expanding part at the inner end, the structure also comprises a clamping piece and a positioning piece, the countersunk screw rod comprises a threaded rod body and a clamping head at least arranged at the inner end of the threaded rod body, the clamping piece is provided with at least second clamping head, the clamping piece is combined and connected with the countersunk screw rod and is used for bidirectionally balancing and clamping the clamping head and the second clamping head in the hole expanding part, and the positioning piece is arranged in an annular gap between the hole wall of the straight hole part and the outer wall of the threaded rod body and is used for radially positioning the threaded rod body, so that bidirectional balance positioning can be realized, the positioning precision is high, the assembly and disassembly are convenient, impact force and damage cannot be generated in the installation process, and.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to bidirectional balance positioning back bolt structures and an installation method thereof.
Background
A back bolt structure for installing and anchoring the decorative plate by large area is a installing modes including a knocking back bolt, a screw-in back bolt, an expanding back bolt and an eccentric locating combined back bolt, in which blind holes are drilled at a position from the surface of a material, and a back bolt device is put in the blind holes to tightly connect the back bolt with the material.
As for the knocking type back bolt and the screw-in type back bolt, because the veneer, particularly the veneer with hard and brittle characteristics such as stone, marble, ceramic and the like, has the thickness which is about 10CM and is thinner and thinner, and has difficulty in installation and fixation, when the traditional knocking type back bolt and the screw-in type back bolt are used, because the matched back bolt hole is usually provided with 7CM and is only separated from the outer surface of the veneer by the thickness of 3CM, the knocking type back bolt and the screw-in type back bolt have definite impact and impact force, the 3CM interlayer is easy to be impacted and broken, and the material cost is greatly increased.
In the aspect of , the eccentric structure of the eccentric positioning combined back bolt only enables one side to be stressed during installation, the design is unreasonable, the service life of the back bolt is affected, and in the aspect of , the eccentric positioning easily generates positioning errors, positioning accuracy is affected, multiple times of fine adjustment are needed during installation of a pendant or a veneer, and installation efficiency is greatly affected.
Disclosure of Invention
The invention provides bidirectional balance positioning back bolt structures and an installation method thereof for solving the problems, which can realize bidirectional balance positioning, have high positioning precision and convenient disassembly and assembly, do not generate impact force and damage in the installation process, and are safer and more reliable.
In order to achieve the purpose, the invention adopts the technical scheme that:
back bolt structure with bidirectional balance positioning, comprising a countersunk head screw rod (10) arranged in a back bolt hole (50), wherein the back bolt hole (50) comprises a straight hole part (51) at the outer end and a reaming part (52) at the inner end, the back bolt hole further comprises a clamping piece (20) and positioning pieces (30a, 30b), the countersunk head screw rod (10) comprises a threaded rod body (11) and a clamping head (12) at least arranged at the inner end of the threaded rod body (11), the clamping piece (20) is provided with at least second clamping head (22), the clamping piece (20) is combined and connected with the countersunk head screw rod (10) and hangs the clamping head (12) and the second clamping head (22) in the reaming part (52) in a bidirectional balance way, and the positioning pieces (30a, 30b) are arranged in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11) and perform radial positioning on the threaded rod body (11).
Preferably, the positioning piece adopts a positioning sleeve (30a), and the positioning sleeve (30a) is sleeved in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11); the locating piece adopts more than two locating strips, the locating strips are circumferentially arranged at intervals and are axially symmetrically arranged in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11).
, a thread section is arranged at the outer end of the countersunk head screw rod (10), a locking nut (40) is arranged at the outer end of the countersunk head screw rod (10), the outer wall of the threaded rod body (11) correspondingly matched with the positioning sleeve (30a) is a thread section or a polished rod section, and the chuck (12) and the second chuck (22) are locked through the locking nut (40) after being positioned through the positioning sleeve (30a), so that the chuck (12) and the second chuck (22) form a butt lock with the screw of the locking nut (40).
Preferably, the positioning piece adopts a positioning nut (30b), and the positioning nut (30b) is provided with a trepanning (31) which is in sleeve fit with the threaded rod body (11); trepanning (31) be equipped with the internal thread of the screw-thread body of rod (11) threaded connection, just set nut (30b) pass through trepanning (31) spiral shell sets up the pore wall of straight hole portion (51) with in the annular gap between the outer wall of the screw-thread body of rod (11).
Preferably, the clamping piece (20) is in combined connection with the countersunk head screw (10) through clamping fit and/or inserting fit; and the clamping piece (20) is at least partially overlapped with the countersunk head screw rod (10).
Preferably, the clamping piece (20) comprises a connecting part (21) connected with the countersunk head screw (10) in a combined mode and a second clamping head (22) in clamping and hanging fit with the hole expanding part (52), the connecting part (21) and the second clamping head (22) are combined to form an L-shaped structure or a Z-shaped structure, and the second clamping head (22) is the bottom edge of the L-shaped or Z-shaped structure.
, the connecting part (21) of the clamping piece (20) comprises a C-shaped clamping sleeve (211) and a convex block (212), a groove (111) is formed in the threaded rod body (11) of the countersunk head screw (10), the C-shaped clamping sleeve (211) is in clamping fit with the threaded rod body (11), and the convex block (212) is in splicing fit with the groove (111).
Preferably, the th chuck (12) of the countersunk head screw (10) adopts a central countersunk head or an eccentric countersunk head, and/or the inner holes of the positioning pieces (30a, 30b) adopt central holes or eccentric holes, and the positioning pieces (30a, 30b) and the countersunk head screw (10) form male-female directional connection through grooves and protrusions.
Preferably, an adhesive is arranged in the back bolt hole (50) or on the countersunk head screw (10), and the countersunk head screw (10), the clamping piece (20) and the positioning pieces (30a and 30b) are glued and fixed in the back bolt hole (50) through the adhesive.
Correspondingly, the invention further provides a method for installing the bidirectional balanced positioning back bolt structure of any item, which comprises the following steps:
a. a matched back bolt hole (50) is formed in the position where a back bolt is preset to be implanted, a straight hole part (51) is arranged at the outer end of the back bolt hole (50), and an expanding hole part (52) is arranged at the inner end of the back bolt hole;
b. inserting the end of the countersunk head screw (10) provided with the chuck (12) into the back bolt hole (50), or firstly arranging an adhesive in the back bolt hole (50) or on the countersunk head screw (10), and then inserting the end of the countersunk head screw (10) provided with the chuck (12) into the back bolt hole (50);
c. the th chuck (12) of the countersunk head screw (10) is abutted towards the direction of the hole expanding part (52) at the th side, and simultaneously, the threaded rod body (11) of the countersunk head screw (10) is abutted towards the hole wall of the straight hole part (51) at the th side;
d. a clamping piece (20) is arranged at the second side of the straight hole part (51), the clamping piece (20) is combined and connected with the countersunk head screw (10), and a second clamping head (22) of the clamping piece (20) faces to the opposite side of the th clamping head (12);
e. and positioning pieces (30a and 30b) are arranged in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11), so that the th chuck (12) and the second chuck (22) are bidirectionally and symmetrically clamped and hung on the reaming part (52).
The invention has the beneficial effects that:
(1) the back bolt is hung on the reaming part through the th chuck and the second chuck bidirectional balance clamp, so that bidirectional balance positioning can be realized, the positioning precision is high, the disassembly and the assembly are convenient, impact force and damage cannot be generated in the installation process, and the back bolt is safer and more reliable;
(2) the positioning piece adopts the positioning nut which not only has a positioning effect on the threaded rod body, but also can be directly screwed and fixed in a threaded manner, so that the operation is convenient, and the structure is more compact;
(3) the clamping piece is clamped and matched with the countersunk head screw rod through the C-shaped clamping sleeve and is in splicing and matching with the countersunk head screw rod through the groove and the bump, double fixed connection is realized, and the structure is more reliable;
(4) the invention also comprises step of arranging adhesive in the back bolt hole or the countersunk head screw rod, so that the countersunk head screw rod, the clamping piece and the positioning piece are fixed in the back bolt hole by the adhesive, and the triple fixed connection is realized on the basis of the clamping and inserting double fixed connection, and the structure is more reliable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of , illustrate embodiments of the invention and together with the description serve to explain the invention without limiting it, and in which:
FIG. 1 is a schematic cross-sectional view of an embodiment of the invention showing the inserted state of a countersunk head screw of a bi-directional balanced positioning back bolt structure;
FIG. 2 is a schematic cross-sectional view of a countersunk head screw of a bi-directional balanced positioning back bolt structure of an embodiment of the invention entering a reamer part;
FIG. 3 is a schematic sectional view of the assembled state of the back bolt with bi-directional balanced positioning and the jaw and the countersunk head screw according to embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a positioning member, a latching member and a countersunk head screw of a bi-directional balanced positioning back-bolt structure according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a positioning member, a clamping member and a countersunk head screw of a bi-directional balanced positioning back bolt structure according to a second embodiment of the present invention;
fig. 6 is a schematic perspective view of a countersunk head screw of a bi-directional balanced positioning back bolt structure according to the th and second embodiments of the present invention;
FIG. 7 is a perspective view of a latch member of a bi-directional balanced positioning back latch according to the second embodiment ;
fig. 8 is a schematic perspective view of a positioning member (positioning sleeve) of a bidirectional balanced positioning back bolt structure according to the th and second embodiments of the present invention;
fig. 9 is a perspective view illustrating a combination state of a positioning member, a clamping member and a countersunk head screw of a bidirectional balanced positioning back bolt structure according to the th and second embodiments of the present invention;
FIG. 10 is a schematic cross-sectional view of a positioning member, a clamping member and a countersunk head screw of a bi-directional balanced positioning back bolt structure according to a third embodiment of the present invention;
fig. 11 is a schematic perspective view of a positioning element of a bidirectional balanced positioning back bolt structure according to a third embodiment of the present invention;
in the figure, the position of the upper end of the main shaft,
10-countersunk head screw rod, 11-thread rod body (external thread), 111-groove, 12- th chuck;
20-clips (L-shaped or Z-shaped); 21-a connecting part; 211-C shaped cutting sleeve; 212-bumps; 22-a second chuck;
a positioning piece (30 a-a positioning sleeve or a positioning strip; 30 b-a positioning nut); 31-trepanning (internal threading);
40-a lock nut; 41-a gasket;
50-back bolt hole; 51-straight hole part; 52-a reamer part;
60-hanging parts.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more clear and obvious, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
best mode for carrying out the invention (the positioning element is a positioning sleeve or a positioning strip)
As shown in fig. 1 to 4 and fig. 6 to 9, the bidirectional balanced positioning back bolt structures of this embodiment include a countersunk head screw 10 installed in a back bolt hole 50, where the back bolt hole 50 includes a straight hole portion 51 at an outer end and a hole-expanding portion 52 at an inner end, and further includes a clamping member 20 and positioning members 30a and 30b, where the countersunk head screw 10 includes a threaded rod body 11 and a th clamping head 12 at least disposed at the inner end of the threaded rod body (11), the clamping member 20 is provided with at least second clamping head 22, the clamping member 20 is connected with the countersunk head screw 10 in a combined manner and bidirectionally and symmetrically clamps the th clamping head 12 and the second clamping head 22 to the hole-expanding portion 52, and the positioning members 30a and 30b are disposed in an annular gap between a hole wall of the straight hole portion 51 and an outer wall of the threaded rod body 11 and radially position the threaded rod body 11.
In this embodiment, the chuck (12) of the countersunk head screw (10) may be an eccentric countersunk head, or may also be a central countersunk head, and the inner holes of the positioning members (30a, 30b) may be a central hole or an eccentric hole, which mainly enables that, in a combined body formed by combining the countersunk head screw 10 and the clamping member 20, the chuck 12 and the second chuck 22 are respectively exposed at two sides of the positioning member, and the exposed portion is in clamping and hanging fit with the reaming portion 52 of the back bolt hole 50, wherein, the clamping member 20 is combined and connected with the countersunk head screw 10 by clamping and/or inserting fit, and the clamping member (20) and the countersunk head screw (10) at least have partial overlap, that is, the clamping member is connected by pressing the overlap of the countersunk head screw, so that when the countersunk head screw 10 receives an outward pulling force, the clamping member 20 is also stressed at the same time, the strength is better, preferably, the chuck and the second chuck 22 are symmetrically arranged relative to the central axis of the threaded rod body 11, as shown in fig. 6 and 7, the L-shaped combined structure of the clamping member 20 and the second chuck 22 is a Z-shaped combined and the second chuck structure formed by matching with the second countersunk head screw 22 or the L-shaped connecting portion 21.
As shown in fig. 7 and 9, in this embodiment, the connecting portion 21 of the clip 20 includes a C-shaped ferrule 211 and a protrusion 212, and the threaded rod body 11 of the countersunk head screw 10 is provided with a groove 111; the C-shaped clamping sleeve 211 is matched with the threaded rod body 11 in a clamping mode, and the convex block 212 is matched with the groove 111 in an inserting mode.
In this embodiment, the positioning element is a positioning sleeve 30a, as shown in fig. 8, the positioning sleeve 30a has a smooth inner wall, as shown in fig. 9, the positioning sleeve 30a can be directly sleeved in an annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod body 11; alternatively, an internal thread may be provided on the inner wall of the positioning sleeve 30a, so that the positioning sleeve 30a is screwed on the threaded rod body 11; the positioning element may also be irregular or may also be a split structure, for example, the positioning element may be two or more positioning strips (not shown in the figure), and the positioning strips may be arc positioning strips matched with the outer peripheral surface of the threaded rod body 11; and, the positioning bars are circumferentially spaced and axisymmetrically arranged in an annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod body 11, for example, two semicircular arc positioning bars are provided.
In addition, an adhesive may be further disposed in the back bolt hole 50 or on the countersunk head screw 10, the clamping member 20, and the positioning member 30a are glued and fixed in the back bolt hole 50 through the adhesive, and a metal strip and/or a spring may be further disposed on the threaded rod body 11 of the countersunk head screw 10 or on the chuck 12, the metal strip and/or the spring and the chuck 12 are circumferentially staggered and are used for matching the adhesive and being glued and connected with the back bolt hole 50, and the back bolt structure may further be preferably further provided with a shockproof layer or a shockproof treatment, for example, the shockproof layer may be disposed on an outer circumferential surface of the positioning member 20 contacting with a hole wall of the back bolt hole 50, or disposed between the second chuck or the chuck and the hole wall of the back bolt hole 50, or disposed between the locking nut 40 and the positioning member 30a, and the like, which is not limited thereto.
The positioning piece 30a is provided with a groove or a convex block, the positioning piece and the convex block or the groove of the countersunk head screw 10 are in male-female directional connection, the countersunk head screw 10 is provided with a groove and/or a convex block, and the corresponding clamping piece 20 can be provided with a convex block and/or a groove.
The installation process of the embodiment mainly comprises the following steps:
a. a matched back bolt hole 50 is formed in the position where a back bolt is preset to be implanted, a straight hole part 51 is arranged at the outer end of the back bolt hole 50, and an expanding hole part 52 is arranged at the inner end;
b. as shown in fig. 1, the countersunk head screw 10 with the head 12 end is inserted into the back bolt hole 50, or an adhesive is firstly arranged in the back bolt hole 50 or on the countersunk head screw 10, and then the countersunk head screw 10 with the head 12 end is inserted into the back bolt hole 50;
c. as shown in fig. 2, the th chuck 12 of the countersunk head screw 10 is abutted against the direction of the broaching portion 52 on the th side, and at the same time, the threaded rod body 11 of the countersunk head screw 10 is abutted against the wall of the straight hole portion 51 on the th side;
d. as shown in fig. 3, a card member 20 is inserted into a second side of the straight hole part 51, the card member 20 is combined and connected with the countersunk head screw 10, and a second chuck head 22 of the card member 20 faces to the opposite side of the chuck head 12;
e. as shown in fig. 4, a positioning member 30a is fitted into an annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod body 11, so that the th chuck 12 and the second chuck 22 are bidirectionally and symmetrically engaged with the enlarged hole portion 52.
Second embodiment (the outer end of the positioning piece is also provided with a locking nut and/or a hanging piece)
As shown in fig. 5, the main differences between this embodiment and the embodiment are that in this embodiment, a threaded section is provided at an outer end of the countersunk screw (10), a locking nut (40) is further provided at the outer end of the countersunk screw (10), an outer wall of the threaded rod body (11) corresponding to the positioning sleeve (30a) is a threaded section or a polished rod section, and the th chuck (12) and the second chuck (22) are positioned by the positioning sleeve (30a) and then locked by the locking nut (40), so that the th chuck (12) and the second chuck (22) form a pair lock with the screw of the locking nut (40), wherein two ends of the positioning member 30a abut against between the clamping member 20 and the locking nut 40, or abut against between the th chuck 12 and the locking nut 40.
In this embodiment, a hanging member 60 is further disposed between the locking nut 40 and the positioning member 30a, the hanging member 60 may be configured with different hanging structures according to the type or hanging manner of the external hanging object, which is not illustrated in , or a groove, a tongue, or a round head may be directly disposed at the outer end of the threaded rod 11 for hanging with an external connecting member or an object, the locking nut 40 is in threaded connection with the countersunk head screw 10 and is configured to compress and fix the hanging member 60, or the locking nut 40 may be directly disposed at the outer end of the positioning member 30a to lock and fix the positioning member 30a, and preferably, a gasket is further disposed between the locking nut 40 and the positioning member 30 a.
The remaining structure of this embodiment is substantially similar to that of embodiment , and will not be described herein.
The installation process of this embodiment includes the following steps in addition to steps a through e of embodiment :
f. sleeving the hanging piece 60 at the outer end of the threaded rod body 11 and attaching the hanging piece to the outer end face of the back bolt hole 50;
g. a locking nut 40 is screwed on the outside of the hanging piece 60, and the locking nut 40 is locked and fixed with the threaded rod body 11.
Third embodiment (positioning piece using positioning nut)
As shown in fig. 10 and 11, the main difference between this embodiment and the th and second embodiments is that in this embodiment, the positioning element is a positioning nut 30b, the positioning nut 30b is provided with a trepan boring 31 which is in sleeved fit with the threaded rod 11, the trepan boring 31 is provided with an internal thread which is in threaded connection with the threaded rod 11, and the positioning nut 30b is screwed into an annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod 11 through the trepan boring 31, preferably, the depth of the trepan boring 31 is greater than the length of the threaded rod 11, or, the length of the threaded rod 11 may be greater than the depth of the trepan boring 31 and extend out of the positioning nut 30b, in this embodiment, a gasket 41 is provided between the positioning nut 30b and the outer end surface of the back bolt hole 50 in step .
Similarly, an adhesive may be disposed in the back bolt hole 50 or on the countersunk head screw 10, and the countersunk head screw 10, the clamping member 20, and the positioning member 30b are glued and fixed in the back bolt hole 50 through the adhesive.
The remaining structure of this embodiment is substantially similar to that of the th embodiment and the second embodiment, and is not repeated herein, and the installation process of this embodiment is substantially similar to that of the th embodiment, and the main difference is that in step e of embodiment , the positioning member employs the positioning sleeve 30a, and is directly sleeved in the positioning sleeve 30a in the annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod body 11, and in step e of this embodiment, the positioning member employs the positioning nut 30b, and the positioning nut 30b is spirally sleeved on the threaded rod body 11 and is screwed into the annular gap between the hole wall of the straight hole portion 51 and the outer wall of the threaded rod body 11.
In addition, the invention also provides a method for installing the bidirectional balanced positioning back bolt structure of any item, which comprises the following steps:
a. a matched back bolt hole 50 is formed in the position where a back bolt is preset to be implanted, a straight hole part 51 is arranged at the outer end of the back bolt hole 50, and an expanding hole part 52 is arranged at the inner end;
b. inserting the end, provided with the th chuck 12 , of the countersunk head screw 10 into the back bolt hole 50, or firstly arranging an adhesive in the back bolt hole 50 or on the countersunk head screw 10, and then inserting the end, provided with the th chuck 12 , of the countersunk head screw 10 into the back bolt hole 50;
c. abutting the th chuck 12 of the countersunk head screw 10 to the direction of the hole-enlarging part 52 at the th side, and simultaneously abutting the threaded rod body 11 of the countersunk head screw 10 to the hole wall of the straight hole part 51 at the th side;
d. a clamping piece 20 is arranged at the second side of the straight hole part 51, the clamping piece 20 is combined and connected with the countersunk head screw 10, and the second chuck head 22 of the clamping piece 20 faces to the opposite side of the chuck head 12;
e. positioning pieces 30a and 30b are arranged in an annular gap between the hole wall of the straight hole part 51 and the outer wall of the threaded rod body 11, so that the th chuck 12 and the second chuck 22 are bidirectionally and symmetrically clamped in the reaming part 52, wherein in the process of arranging the positioning pieces 30a and 30b, the th chuck 12 and the second chuck 22 are respectively adjusted and displaced towards two sides until the th chuck 12 and the second chuck 22 are bidirectionally and symmetrically clamped in the reaming part 52 and are positioned by the positioning piece 20.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the embodiment of the installation method, because the embodiment is basically similar to the structural embodiment, the description is simple, and the relevant points can be referred to the partial description of the structural embodiment.
While the above description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
- The back bolt structure comprises a countersunk head screw rod (10) installed in a back bolt hole (50), wherein the back bolt hole (50) comprises a straight hole part (51) at the outer end and a hole expanding part (52) at the inner end, and the back bolt structure is characterized by further comprising a clamping piece (20) and positioning pieces (30a and 30b), wherein the countersunk head screw rod (10) comprises a threaded rod body (11) and a clamping head (12) at least arranged at the inner end of the threaded rod body (11), the clamping piece (20) is provided with at least second clamping head (22), the clamping piece (20) is combined and connected with the countersunk head screw rod (10) and is used for bidirectionally and symmetrically clamping the clamping head (12) and the second clamping head (22) in the hole expanding part (52), and the positioning pieces (30a and 30b) are arranged in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11) and are used for radially positioning the threaded rod body (11).
- 2. The kinds of bidirectional balance positioning back bolt structure of claim 1, wherein the positioning element is a positioning sleeve (30a), the positioning sleeve (30a) is sleeved in an annular gap between the hole wall of the straight hole portion (51) and the outer wall of the threaded rod body (11), the positioning element is more than two positioning strips, the positioning strips are circumferentially arranged at intervals and are axially symmetrically arranged in the annular gap between the hole wall of the straight hole portion (51) and the outer wall of the threaded rod body (11).
- 3. The kind of bidirectional balanced positioning back bolt structure of claim 2, wherein the outer end of the countersunk head screw (10) has a threaded section, and steps are further performed to set a lock nut (40) at the outer end of the countersunk head screw (10), the outer wall of the threaded rod body (11) correspondingly matched with the positioning sleeve (30a) is a threaded section or a polished rod section, and the chuck (12) and the second chuck (22) are locked by the lock nut (40) after being positioned by the positioning sleeve (30a), so that the chuck (12) and the second chuck (22) form a counter lock with the screw of the lock nut (40).
- 4. The kinds of back bolt structures with bidirectional balanced positioning according to claim 1, wherein the positioning member is a positioning nut (30b), the positioning nut (30b) is provided with a trepanning (31) which is in sleeve fit with the threaded rod body (11), the trepanning (31) is provided with an internal thread which is in threaded connection with the threaded rod body (11), and the positioning nut (30b) is screwed in an annular gap between the hole wall of the straight hole portion (51) and the outer wall of the threaded rod body (11) through the trepanning (31).
- 5. Back Pin Structure of bidirectional Balanced orientation according to claim 1, characterized in that the clip (20) is connected in combination with the countersunk head screw (10) by snap-fit and/or plug-fit, and that there is at least a partial overlap between the clip (20) and the countersunk head screw (10).
- 6. The kind of back bolt structure with bidirectional balanced positioning according to claim 1, wherein the clip member (20) includes a connecting portion (21) connected with the countersunk head screw (10) and a second clip head (22) engaged with the enlarged hole portion (52), the connecting portion (21) and the second clip head (22) form an L-shaped structure or a Z-shaped structure, and the second clip head (22) is the bottom edge of the L-shaped or Z-shaped.
- 7. The kind of back bolt structures with bidirectional balanced positioning according to claim 6, characterized in that the connecting portion (21) of the clip (20) includes a C-shaped clip sleeve (211) and a protrusion (212), the threaded rod body (11) of the countersunk head screw (10) has a groove (111), the C-shaped clip sleeve (211) is snap-fitted with the threaded rod body (11), and the protrusion (212) is plug-fitted with the groove (111).
- 8. The kind of bidirectional balanced positioning back bolt structure of claims 1-7, wherein the th chuck (12) of the countersunk head screw (10) is a center countersunk head or eccentric countersunk head, and/or the inner bore of the positioning member (30a, 30b) is a center bore or eccentric bore, and the positioning member (30a, 30b) and the countersunk head screw (10) are connected in male-female orientation by a groove and a bump.
- 9. The kind of bidirectional balanced positioning back bolt structure of any claims 1 to 7, wherein an adhesive is disposed in the back bolt hole (50) or on the countersunk head screw (10), and the countersunk head screw (10), the clip (20), and the positioning members (30a, 30b) are fixed in the back bolt hole (50) by the adhesive.
- 10, method for mounting the bidirectional balanced positioning back bolt structure of any claims 1-9, comprising the steps of:a. a matched back bolt hole (50) is formed in the position where a back bolt is preset to be implanted, a straight hole part (51) is arranged at the outer end of the back bolt hole (50), and an expanding hole part (52) is arranged at the inner end of the back bolt hole;b. inserting the end of the countersunk head screw (10) provided with the chuck (12) into the back bolt hole (50), or firstly arranging an adhesive in the back bolt hole (50) or on the countersunk head screw (10), and then inserting the end of the countersunk head screw (10) provided with the chuck (12) into the back bolt hole (50);c. the th chuck (12) of the countersunk head screw (10) is abutted towards the direction of the hole expanding part (52) at the th side, and simultaneously, the threaded rod body (11) of the countersunk head screw (10) is abutted towards the hole wall of the straight hole part (51) at the th side;d. a clamping piece (20) is arranged at the second side of the straight hole part (51), the clamping piece (20) is combined and connected with the countersunk head screw (10), and a second clamping head (22) of the clamping piece (20) faces to the opposite side of the th clamping head (12);e. and positioning pieces (30a and 30b) are arranged in an annular gap between the hole wall of the straight hole part (51) and the outer wall of the threaded rod body (11), so that the th chuck (12) and the second chuck (22) are bidirectionally and symmetrically clamped and hung on the reaming part (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806521.4A CN110735832B (en) | 2018-07-20 | 2018-07-20 | Back bolt structure with bidirectional balance positioning function and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806521.4A CN110735832B (en) | 2018-07-20 | 2018-07-20 | Back bolt structure with bidirectional balance positioning function and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN110735832A true CN110735832A (en) | 2020-01-31 |
| CN110735832B CN110735832B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810806521.4A Active CN110735832B (en) | 2018-07-20 | 2018-07-20 | Back bolt structure with bidirectional balance positioning function and mounting method thereof |
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| CN (1) | CN110735832B (en) |
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| Publication number | Publication date |
|---|---|
| CN110735832B (en) | 2024-07-09 |
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