CN219795786U - Interlocking type one-way bolt for simple greenhouse steel structure - Google Patents
Interlocking type one-way bolt for simple greenhouse steel structure Download PDFInfo
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- CN219795786U CN219795786U CN202320877300.2U CN202320877300U CN219795786U CN 219795786 U CN219795786 U CN 219795786U CN 202320877300 U CN202320877300 U CN 202320877300U CN 219795786 U CN219795786 U CN 219795786U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 238000004880 explosion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 19
- 238000010276 construction Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides an interlocking type one-way bolt for a simple greenhouse steel structure, which comprises a hexagonal nut, a flat gasket, a first conical part, an expansion sleeve, a second conical part and a countersunk bolt, wherein the flat gasket, the first conical part, the expansion sleeve and the second conical part are sequentially arranged between the hexagonal nut and the countersunk bolt, and the expansion sleeve is opened by the relative movement between the first conical part and the expansion sleeve as well as between the second conical part and the expansion sleeve caused by the high-speed rotation of the hexagonal nut so as to realize the locking of the bolt. The utility model has reasonable structure and easy installation, and solves the problem that the expansion piece possibly drops to influence the installation of the bolt due to the high-speed rotation of the screw thread or the unclear reasons of the screw thread and the like in the construction process by arranging the countersunk head bolt, the conical piece and the like, and can also generate a buffer effect on the pressure born by the bolt and the connected piece in the construction process. The arrangement of the flat gasket can also protect the surface of the joint of the connected piece from abrasion to influence the appearance of the connected piece.
Description
[ field of technology ]
The utility model relates to the technical field of bolt processing, in particular to the technical field of interlocking type one-way bolts for a simple greenhouse steel structure.
[ background Art ]
The steel structure is one of the main building structures, and is composed of steel beams, steel columns, steel trusses and other components made of steel sections, steel plates and the like, and is light in dead weight, simple in construction and widely applied to the fields of large-scale plants, venues, super high-rise buildings and the like. The rectangular hollow steel material in the steel structure not only can reduce the steel consumption, but also is convenient for constructing an attractive indoor environment, and is more suitable for being used as a frame column, but for the bolt connection between the H-shaped beam and the rectangular column, the section of the rectangular column is a closed section, and a common bolt cannot be directly used, so that a special unidirectional bolt capable of being locked on one side is needed.
The unidirectional bolt is a bolt which can realize the functions of unilateral installation and unilateral screwing, not only does not need to additionally process an installation hole, but also can finish the installation of the bolt on the premise of not damaging other parts of steel, and can reduce the welding quantity as much as possible so as to save the construction quantity and labor cost, and has the characteristics of simple and convenient site construction and extremely small welding quantity. Meanwhile, under certain conditions, the mechanical property of the bolt can be comparable with that of the traditional high-strength bolt. For example, chinese patent CN 209604384U proposes a single-sided bolt, which includes an expansion member, an expansion sleeve, and a screw, wherein the expansion teeth are spread apart by a relative movement between the expansion member and the expansion teeth in the expansion sleeve, so as to realize single-sided locking. However, although the expansion member is internally provided with a thread which is matched with the screw, the expansion member is likely to fall down due to high-speed rotation of the thread, unclear threads and the like in the construction process, and the installation of the bolt is affected.
[ utility model ]
The utility model aims to solve the problems in the prior art, and provides an interlocking type one-way bolt for a simple greenhouse steel structure, which aims to solve the problem that an expansion piece is likely to fall down due to high-speed rotation of threads, unclear threads and the like in the construction process, and influences the installation of the bolt.
In order to achieve the above purpose, the utility model provides an interlocking type one-way bolt for a simple greenhouse steel structure, which comprises a hexagonal nut, a flat gasket, a first conical part, an expansion sleeve, a second conical part and a countersunk head bolt, wherein the flat gasket, the first conical part, the expansion sleeve and the second conical part are sequentially arranged between the hexagonal nut and the countersunk head bolt.
Preferably, the inner surface of the hexagon nut is provided with a first thread, the outer surface of the screw rod of the countersunk head bolt is provided with a second thread, the first thread of the inner surface of the hexagon nut is mutually matched with the second thread arranged on the outer surface of the screw rod of the countersunk head bolt, and the hexagon nut is connected with the countersunk head bolt through the first thread and the second thread, so that the tightness of the connection of the bolt and the nut is ensured.
Preferably, the countersunk head bolt comprises a screw rod and a bolt countersunk head, a plurality of second threads are arranged on the outer surface of the screw rod, the bolt countersunk head is a round table, the bolt countersunk head comprises a first round table surface and a second round table surface, the diameter of the screw rod is equal to that of the second round table surface, the screw rod is connected with the second round table surface of the bolt countersunk head to form the countersunk head bolt, other parts arranged on the screw rod can be prevented from falling by the countersunk head bolt, and the stability of the other parts on the screw rod is improved.
Preferably, the flat gasket is a square flat gasket with a first circular through hole in the center, the diameter of the first circular through hole is equal to that of a screw rod in the countersunk head bolt, the flat gasket is arranged on the screw rod in the countersunk head bolt through the first circular through hole, the contact area between the bolt and a connected piece can be increased, the pressure generated to the connected piece in the construction process is dispersed, a certain protection effect can be generated on the surfaces of the bolt and the connected piece, and the surface of the connected piece is not easy to wear.
Preferably, the first conical part comprises a first conical head and a cylindrical rubber pad, the first conical head comprises a first conical surface and a second conical surface which are parallel to each other, the circle centers of the first conical surface and the second conical surface are located on the same first central line, the diameter of the first conical surface is smaller than that of the second conical surface, the second conical surface is propped against the flat gasket, a plurality of first convex columns are arranged on the outer surface of the first conical part, the diameter of the second conical surface in the first conical head is equal to that of the cylindrical rubber pad, the second conical surface of the first conical head is connected with the cylindrical rubber pad to form the first conical part, and the rubber pad can enhance friction force between the first conical part and the flat gasket, so that the first conical part and the flat gasket are fastened more tightly and are not easy to rotate. The diameter of the cylindrical rubber pad in the first conical part is equal to that of the first round table surface of the bolt countersunk head in the countersunk head bolt, so that the outer surface formed by connecting the first conical part and other parts with the countersunk head bolt is kept flat, and the installation of the bolt is easier. The center of first cone is provided with the circular through-hole of second, the diameter of the circular through-hole of second equals with countersunk head bolt's screw rod, first cone passes through the circular through-hole of second and sets up on countersunk head bolt's screw rod, simple structure can make first cone fix on the screw rod better.
Preferably, the expansion sleeve is cylindrical, a third circular through hole is formed in the center of the circular side face of the expansion sleeve, the diameter of the third circular through hole is equal to that of the screw rod in the countersunk head bolt, and the expansion sleeve is arranged on the screw rod in the countersunk head bolt through the third circular through hole, so that the expansion sleeve is simple in structure and can be better fixed on the screw rod. The diameter of the circular side surface in the expansion sleeve is equal to the diameter of the first circular table surface of the bolt countersunk head in the countersunk head bolt, so that the outer surface formed by connecting the expansion sleeve and other parts with the countersunk head bolt is kept flat, and the installation of the bolt is easier.
Preferably, a plurality of expansion sheets are arranged at two ends of the expansion sleeve, and expansion openings are arranged between the expansion sheets. The first conical surface of first conical head among the first conical member and the expansion opening in the expansion shell agree with each other, the first conical surface of first conical head offsets with the circular side of expansion shell, first conical member agrees with each other with the expansion shell through first projection and expansion opening and is connected, and is rational in infrastructure, makes things convenient for the relative motion to take place for first conical member and expansion shell to realize locking effect in the work progress, and both ends all set up the expansion piece and can prevent by the pressure that connecting piece internal connection department received too big.
Preferably, the second conical member comprises a third conical surface and a fourth conical surface which are parallel to each other, the circle center of the third conical surface and the circle center of the fourth conical surface are located on the same second central line, the diameter of the third conical surface is smaller than that of the fourth conical surface, the diameter of the fourth conical surface is equal to that of a first round table surface of a bolt countersunk head in the countersunk head bolt, the inner surface of the second conical member is matched with the bolt countersunk head in the countersunk head bolt, the second conical member can be prevented from falling from the screw rod, and the pressure born by the bolt countersunk head in the construction process can be buffered.
Preferably, a fourth circular through hole is formed in the center of a fourth conical surface of the second conical part, the diameter of the fourth circular through hole is equal to that of the screw rod in the countersunk head bolt, the second conical part is arranged on the screw rod in the countersunk head bolt through the fourth circular through hole, and the structure is simple, so that the second conical part can be better fixed on the screw rod.
Preferably, the outer surface of the second conical part is provided with a plurality of second convex columns, the second convex columns are mutually matched with the expansion openings in the expansion sleeve, the third conical surface of the second conical part is propped against the round side surface of the expansion sleeve, the second conical part is mutually matched with the expansion openings through the second convex columns and is connected with the expansion sleeve, and the expansion sleeve is reasonable in structure, so that the first conical part and the expansion sleeve can relatively move in the construction process conveniently to realize the locking effect.
The utility model has the beneficial effects that: compared with the prior art, the interlocking type one-way bolt for the steel structure of the simple greenhouse is reasonable in structure and easy to install, and due to the fact that the countersunk bolt, the conical part and the like are arranged, the problem that the expansion part possibly drops to influence the installation of the bolt due to the fact that threads rotate at a high speed or the threads are unclear in the construction process is solved, and the buffer effect can be generated on the pressure applied to the bolt and the connected part in the construction process. The arrangement of the flat gasket can also protect the surface of the joint of the connected piece from abrasion to influence the appearance of the connected piece.
The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic diagram of an exploded structure of an interlocking one-way bolt for a simple greenhouse steel structure.
Fig. 2 is a schematic structural view of a hexagonal nut in an interlocking type one-way bolt for a simple greenhouse steel structure.
Fig. 3 is a schematic structural view of a countersunk head bolt in an interlocking type one-way bolt for a simple greenhouse steel structure.
Fig. 4 is a schematic structural view of a first cone in an interlocking unidirectional bolt for a simple greenhouse steel structure.
Fig. 5 is a schematic structural view of an expansion sleeve in an interlocking unidirectional bolt for a simple greenhouse steel structure.
Fig. 6 is a schematic structural view of a second conical member in an interlocking unidirectional bolt for a simple greenhouse steel structure.
Fig. 7 is a schematic diagram of a combined structure of interlocking unidirectional bolts for a simple greenhouse steel structure.
In the figure: 1-hexagonal nut, 2-flat washer, 3-first conical member, 4-expansion shell, 5-second conical member, 6-countersunk head bolt, 11-first screw thread, 21-first circular through hole, 31-first conical head, 32-cylindrical rubber pad, 33-second circular through hole, 34-first boss, 35-first conical surface, 36-second conical surface, 37-first center line, 41-third circular through hole, 42-expansion piece, 43-expansion opening, 44-circular side surface, 51-fourth circular through hole, 52-second boss, 53-third conical surface, 54-fourth conical surface, 55-second center line, 61-screw rod, 62-second screw thread, 63-bolt countersunk head, 631-first circular table top, 632-second circular table top.
[ detailed description ] of the utility model
The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
Referring to fig. 1, the interlocking type one-way bolt for a simple greenhouse steel structure comprises a hexagonal nut 1, a flat gasket 2, a first conical part 3, an expansion sleeve 4, a second conical part 5 and a countersunk bolt 6, wherein the flat gasket 2, the first conical part 3, the expansion sleeve 4 and the second conical part 5 are sequentially arranged between the hexagonal nut 1 and the countersunk bolt 6. The flat gasket 2 is a square flat gasket with a first circular through hole 21 arranged in the center, the diameter of the first circular through hole 21 is equal to that of a screw 61 in the countersunk bolt 6, the flat gasket 2 is arranged on the screw 61 in the countersunk bolt 6 through the first circular through hole 21, the contact area between the bolt and a connected piece can be increased by the flat gasket 2, the pressure generated to the connected piece in the construction process is dispersed, a certain protection effect can be generated on the surfaces of the bolt and the connected piece, and the surface of the connected piece is not easy to wear.
Referring to fig. 2 and 3, the inner surface of the hexagonal nut 1 is provided with a first thread 11, the outer surface of the screw 61 of the countersunk bolt 6 is provided with a second thread 62, the first thread 11 of the inner surface of the hexagonal nut is mutually engaged with the second thread 62 provided on the outer surface of the screw 61 of the countersunk bolt 6, and the hexagonal nut 1 is engaged with the second thread 62 through the first thread 11 and is connected with the countersunk bolt 6, so as to ensure the tightness of the connection of the bolt and the nut.
Referring to fig. 3, the countersunk head bolt 6 includes a screw 61 and a bolt countersunk head 63, a plurality of second threads 62 are provided on the outer surface of the screw 61, the bolt countersunk head 63 is a circular table, the bolt countersunk head 63 includes a first circular table surface 631 and a second circular table surface 632, the diameter of the screw 61 is equal to that of the second circular table surface 632, the screw 61 is connected with the second circular table surface 632 of the bolt countersunk head 63 to form a countersunk head bolt, other components on the screw 61 can be prevented from falling by using the countersunk head bolt 6, and the stability of other components on the screw 61 is improved.
Referring to fig. 1 and 4, the first conical member 3 includes a first conical head 31 and a cylindrical rubber pad 32, the first conical head includes a first conical surface 35 and a second conical surface 36 that are parallel to each other, the center of the first conical surface 35 and the center of the second conical surface 36 are located on the same first center line 37, the diameter of the first conical surface 35 is smaller than that of the second conical surface 36, the second conical surface 36 abuts against the flat gasket 2, a plurality of first protruding columns 34 are provided on the outer surface of the first conical head 31, the diameter of the second conical surface 36 in the first conical head 31 is equal to that of the cylindrical rubber pad 32, the second conical surface 36 of the first conical head 31 is connected with the cylindrical rubber pad 32 to form the first conical member 3, and the rubber pad 32 can enhance the friction force between the first conical member 3 and the flat gasket 2, so that the first conical member 3 and the flat gasket 2 are fastened more tightly and are not easy to rotate. The diameter of the cylindrical rubber pad 32 in the first conical member 3 is equal to the diameter of the first round table surface 631 of the bolt countersunk head 63 in the countersunk head bolt 6, so that the outer surface formed by connecting the first conical member 3 and other components with the countersunk head bolt 6 can be kept flat, and the installation of the bolt is easier. The center of the first conical member 3 is provided with a second circular through hole 33, the diameter of the second circular through hole 33 is equal to that of the screw 61 of the countersunk bolt 6, the first conical member 3 is arranged on the screw 61 in the countersunk bolt 6 through the second circular through hole 33, and the structure is simple, so that the first conical member 3 can be better fixed on the screw 61.
Referring to fig. 1, 4 and 5, the expansion sleeve 4 is cylindrical, a third circular through hole 41 is provided in the center of the circular side surface 44 in the expansion sleeve 4, the diameter of the third circular through hole 41 is equal to the diameter of the screw 61 in the countersunk bolt 6, and the expansion sleeve 4 is disposed on the screw 61 in the countersunk bolt 6 through the third circular through hole 41, so that the expansion sleeve 6 can be better fixed on the screw 61 with simple structure. The diameter of the circular side surface 44 in the expansion sleeve 4 is equal to the diameter of the first circular table surface 631 of the bolt countersunk head 63 in the countersunk head bolt 6, so that the outer surface formed by connecting the expansion sleeve 4 and other components with the countersunk head bolt 6 can be kept flat, and the installation of the bolt is easier. A plurality of expansion pieces 42 are arranged at two ends of the expansion sleeve 4, and expansion openings 43 are arranged between the expansion pieces 42. The first convex column 34 arranged on the outer surface of the first conical head 31 in the first conical member 3 is mutually matched with the expansion opening 43 in the expansion sleeve 4, the first conical surface 35 of the first conical head 31 is propped against the round side surface 44 of the expansion sleeve 4, the first conical member 3 is mutually matched with the expansion opening 43 through the first convex column 34 and connected with the expansion sleeve 4, the structure is reasonable, the first conical member 3 and the expansion sleeve 4 can conveniently perform relative movement in the construction process to realize a locking effect, and the expansion sheets 42 are arranged at two ends of the expansion sleeve, so that the pressure received by the connecting part at the inner connecting part of the connecting part can be prevented from being overlarge.
Referring to fig. 1, 5 and 6, the second conical member 5 includes a third conical surface 53 and a fourth conical surface 54 parallel to each other, the center of the third conical surface 53 and the center of the fourth conical surface 54 are located on the same second center line 55, the diameter of the third conical surface 53 is smaller than the diameter of the fourth conical surface 54, the diameter of the fourth conical surface 54 is equal to the diameter of a first circular table surface 631 of a bolt countersunk head 63 in the countersunk head bolt 6, the inner surface of the second conical member 5 is engaged with the bolt countersunk head 63 in the countersunk head bolt 6, so that the second conical member 5 can be prevented from falling from the screw 61, the center of the fourth conical surface 54 of the second conical member 5 can be provided with a fourth circular through hole 51, the diameter of the fourth circular through hole 51 is equal to the diameter of the screw 61 in the countersunk head bolt 6, the second conical member 5 is arranged on the screw 61 in the countersunk head bolt 6 through the fourth circular through hole 51, and the second conical member 5 can be better fixed on the screw 61. The second conical part 5 is provided with a plurality of second convex columns 52 on the outer surface, the second convex columns 52 are mutually matched with the expansion openings 43 in the expansion sleeve 4, the third conical surface 53 of the second conical part 5 is propped against the round side surface 44 of the expansion sleeve 4, the second conical part 5 is mutually matched with the expansion openings 43 through the second convex columns 52 and is connected with the expansion sleeve 4, and the structure is reasonable, so that the first conical part 3 and the expansion sleeve 4 can move relatively in the construction process conveniently to realize the locking effect.
The working process of the utility model comprises the following steps:
in the working process of the interlocking type unidirectional bolt for the simple greenhouse steel structure, firstly, a combination body formed by sequentially arranging a second conical part 5, an expansion sleeve 4 and a first conical part 3 on a screw 61 passes through a connecting hole on a connected part, then a flat gasket 2 is arranged on the screw 61 to prop against the surface of the connected part, then the screw 61 is fixed by a spanner, finally, a hexagonal nut 1 is rotated at a high speed by a tool to thoroughly lock the bolt, and because the first conical part 3, the expansion sleeve 4 and the second conical part 5 are relatively fixed, a rubber pad 32 in the first conical part 3 props against the flat gasket 2 to relatively fix the flat gasket 2 and the first conical part 3, so that the hexagonal nut 1 can cause the relative movement between the first conical part 3 and the expansion sleeve 4, the second conical part 5 and the expansion sleeve 4, and a plurality of expansion pieces 42 are dispersed and spread in the process of the relative movement between the first conical part 3 and the expansion sleeve 4, and a plurality of expansion pieces 42 are spread, and the bolt is enabled to realize a unilateral locking function after the expansion pieces 42 are spread. The utility model has reasonable structure and easy installation, and solves the problem that the expansion piece possibly drops to influence the installation of the bolt due to the high-speed rotation of the screw thread or the unclear reasons of the screw thread and the like in the construction process by arranging the countersunk head bolt, the conical piece and the like, and can also generate a buffer effect on the pressure born by the bolt and the connected piece in the construction process. The arrangement of the flat gasket can also protect the surface of the joint of the connected piece from abrasion to influence the appearance of the connected piece.
The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a simple and easy greenhouse steel structure is with interlocking formula one-way bolt which characterized in that: the novel anti-explosion nut comprises a hexagonal nut (1), a flat gasket (2), a first conical part (3), an expansion sleeve (4), a second conical part (5) and a countersunk bolt (6), wherein the flat gasket (2), the first conical part (3), the expansion sleeve (4) and the second conical part (5) are sequentially arranged between the hexagonal nut (1) and the countersunk bolt (6).
2. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the hexagonal nut (1) internal surface is provided with first screw thread (11), the screw rod (61) surface of countersunk head bolt (6) is provided with second screw thread (62), first screw thread (11) of hexagonal nut internal surface and second screw thread (62) that screw rod (61) surface of countersunk head bolt (6) set up agree with each other, hexagonal nut (1) agree with second screw thread (62) through first screw thread (11) and are connected with countersunk head bolt (6).
3. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: countersunk head bolt (6) include screw rod (61) and bolt countersunk head (63), screw rod (61) surface is provided with a plurality of second screw threads (62), bolt countersunk head (63) are round platform type, bolt countersunk head (63) contain first round table face (631) and second round table face (632), the diameter of screw rod (61) equals with the diameter of second round table face (632), screw rod (61) are connected with second round table face (632) of bolt countersunk head (63) and form countersunk head bolt.
4. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the flat gasket (2) is a square flat gasket with a first circular through hole (21) arranged in the center, the diameter of the first circular through hole (21) is equal to that of a screw rod (61) in the countersunk head bolt (6), and the flat gasket (2) is arranged on the screw rod (61) in the countersunk head bolt (6) through the first circular through hole (21).
5. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the first conical part (3) comprises a first conical head (31) and a cylindrical rubber pad (32), the first conical head comprises a first conical surface (35) and a second conical surface (36) which are parallel to each other, the center of the first conical surface (35) and the center of the second conical surface (36) are positioned on the same first central line (37), the diameter of the first conical surface (35) is smaller than that of the second conical surface (36), a plurality of first convex columns (34) are arranged on the outer surface of the first conical head (31), the diameter of the second conical surface (36) in the first conical head (31) is equal to that of the cylindrical rubber pad (32), the second conical surface (36) of the first conical head (31) is connected with the cylindrical rubber pad (32) to form the first conical part (3), the diameter of the cylindrical rubber pad (32) in the first conical part (3) is equal to that of a first round table surface (631) of a bolt countersunk head (63) in a countersunk head bolt (6), the diameter of the second conical part (3) is equal to that of a circular through hole (33) of the second countersunk head (33), the first conical part (3) is arranged on a screw (61) in the countersunk head bolt (6) through a second circular through hole (33).
6. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the expansion sleeve (4) is cylindrical, a third circular through hole (41) is formed in the center of a circular side face (44) in the expansion sleeve (4), the diameter of the third circular through hole (41) is equal to that of a screw rod (61) in the countersunk head bolt (6), the expansion sleeve (4) is arranged on the screw rod (61) in the countersunk head bolt (6) through the third circular through hole (41), and the diameter of the circular side face (44) in the expansion sleeve (4) is equal to that of a first circular table surface (631) of a bolt countersunk head (63) in the countersunk head bolt (6).
7. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the expansion sleeve is characterized in that a plurality of expansion sheets (42) are arranged at two ends of the expansion sleeve (4), expansion openings (43) are arranged between the expansion sheets (42), a first convex column (34) arranged on the outer surface of a first conical head (31) in the first conical part (3) is mutually matched with the expansion openings (43) in the expansion sleeve (4), a first conical surface (35) of the first conical head (31) is propped against a circular side face (44) of the expansion sleeve (4), and the first conical part (3) is mutually matched with the expansion openings (43) through the first convex column (34) and is connected with the expansion sleeve (4).
8. The interlocking one-way bolt for a simple greenhouse steel structure according to claim 1, wherein: the second conical part (5) comprises a third conical surface (53) and a fourth conical surface (54) which are parallel to each other, the circle center of the third conical surface (53) and the circle center of the fourth conical surface (54) are located on the same second central line (55), the diameter of the third conical surface (53) is smaller than that of the fourth conical surface (54), the diameter of the fourth conical surface (54) is equal to that of a first round table surface (631) of a bolt countersunk head (63) in the countersunk head bolt (6), and the inner surface of the second conical part (5) is matched with the bolt countersunk head (63) in the countersunk head bolt (6).
9. The interlocking unidirectional bolt for a simple greenhouse steel structure according to claim 8, wherein: the center of a fourth conical surface (54) of the second conical part (5) is provided with a fourth circular through hole (51), the diameter of the fourth circular through hole (51) is equal to that of a screw (61) in the countersunk bolt (6), and the second conical part (5) is arranged on the screw (61) in the countersunk bolt (6) through the fourth circular through hole (51).
10. The interlocking unidirectional bolt for a simple greenhouse steel structure according to claim 8, wherein: the outer surface of the second conical part (5) is provided with a plurality of second convex columns (52), the second convex columns (52) are mutually matched with expansion openings (43) in the expansion sleeve (4), a third conical surface (53) of the second conical part (5) is propped against a round side surface (44) of the expansion sleeve (4), and the second conical part (5) is mutually matched with the expansion openings (43) through the second convex columns (52) and is connected with the expansion sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320877300.2U CN219795786U (en) | 2023-04-18 | 2023-04-18 | Interlocking type one-way bolt for simple greenhouse steel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320877300.2U CN219795786U (en) | 2023-04-18 | 2023-04-18 | Interlocking type one-way bolt for simple greenhouse steel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219795786U true CN219795786U (en) | 2023-10-03 |
Family
ID=88152817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320877300.2U Active CN219795786U (en) | 2023-04-18 | 2023-04-18 | Interlocking type one-way bolt for simple greenhouse steel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219795786U (en) |
-
2023
- 2023-04-18 CN CN202320877300.2U patent/CN219795786U/en active Active
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