CN216343257U - Expansion bolt capable of being repeatedly used - Google Patents
Expansion bolt capable of being repeatedly used Download PDFInfo
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- CN216343257U CN216343257U CN202122283596.9U CN202122283596U CN216343257U CN 216343257 U CN216343257 U CN 216343257U CN 202122283596 U CN202122283596 U CN 202122283596U CN 216343257 U CN216343257 U CN 216343257U
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Abstract
The utility model discloses a reusable expansion bolt which comprises a screw rod, a prism, an external thread rod, a round table, a cylinder, a drill bit, a sleeve, a first internal thread pipe, an arc-shaped plate, a ring, a first external thread, a sealing ring, a second internal thread pipe, a third internal thread pipe and a nut. According to the utility model, the sealing ring is composed of the second internal thread pipe and the third internal thread pipe, the inner diameter of the second internal thread pipe is slightly smaller than the outer diameter of the external thread rod, and the inner diameter of the third internal thread pipe is slightly smaller than the outer diameter of the external thread, so that the sealing ring can be more tightly connected with the external thread rod and the external thread, water vapor and the like are prevented from entering between the first internal thread pipe and the external thread rod, and the first internal thread pipe and the external thread rod are not easy to corrode.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of fasteners, in particular to the technical field of a reusable expansion bolt.
[ background of the utility model ]
The fixing principle of expansion bolt is that the wedge slope of the wedge is used to make the expansion produce friction force to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with a taper. The steel sheet is covered on the outer surface, a plurality of notches are arranged on one half of the iron sheet cylinder, the steel sheet cylinder and the notches are plugged into a hole drilled in a wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the steel sheet cylinder, the steel sheet cylinder is expanded and then is tightly fixed on the wall, and the steel sheet cylinder is generally used for fastening protective guards, rain sheds, air conditioners and the like on materials such as cement, bricks and the like. The expansion bolt is widely applied, and the existing expansion bolt is poor in sealing performance, not easy to disassemble and incapable of being used repeatedly.
[ Utility model ] content
The utility model aims to solve the problems in the prior art and provides a reusable expansion bolt which has good sealing performance and can be detached easily and reused.
In order to achieve the purpose, the utility model provides a reusable expansion bolt, which comprises a screw rod, a prism, an external threaded rod, a round table, a cylinder, a drill bit, a sleeve, a first internal threaded pipe, arc plates, a circular ring, a first external thread, a sealing ring, a second internal threaded pipe, a third internal threaded pipe and a nut, wherein the screw rod mainly comprises the prism, the external threaded rod, the round table, the cylinder and the drill bit, the prism, the external threaded rod, the round table, the cylinder and the drill bit are coaxially connected in sequence, the drill bit is arranged under the prism, the sleeve mainly comprises the first internal threaded pipe, the arc plates, the circular ring and the first external thread, the first internal threaded pipe is screwed on the external threaded rod, the coaxial circular ring is sleeved at the upper end of the first internal threaded pipe, the first external thread is arranged on the outer wall of the first internal threaded pipe above the circular ring, the arc plates are arranged at the lowest end of the first internal threaded pipe, the sealing ring is arranged above the circular ring, the sealing ring mainly comprises a second internal thread pipe and a third internal thread pipe, wherein the lower end face of the second internal thread pipe is provided with the coaxial third internal thread pipe, the second internal thread pipe is screwed on the external thread rod, the third internal thread pipe is screwed on the first external thread, a nut is arranged above the sealing ring, and the nut is screwed on the external thread rod.
Preferably, the horizontal section of the prism is inscribed in the horizontal section of the male screw rod.
Preferably, the arc plates are circumferentially distributed at the lower end surface of the first internal thread pipe, the arc plates are coaxial with the first internal thread pipe, the inner diameter and the outer diameter of the arc plates are the same as those of the first internal thread pipe, and the axial length of the arc plates is greater than the sum of the axial lengths of the circular truncated cone and the circular column.
Preferably, the outer wall of the first internal thread pipe is provided with a second external thread, the second external thread axially extends to the lowest end of the arc plate from the lower end face of the circular ring, a third adaptive internal thread pipe is screwed on the outer wall of the first internal thread pipe below the circular ring, the axial length of the third internal thread pipe is greater than that of the arc plate, the axial length of the third internal thread pipe is smaller than that of the first internal thread pipe below the circular ring, and the outer wall of the third internal thread pipe is provided with anti-skidding vertical stripes.
Preferably, the upper bottom of the circular truncated cone is coaxially connected with the lower end face of the external thread rod, the outer diameter of the upper bottom of the circular truncated cone is the same as that of the lower end face of the external thread rod, and the outer diameter of the third internal thread tube, the lower bottom of the circular truncated cone, the outer diameter of the cylinder and the maximum outer diameter of the drill bit are the same.
Preferably, the inner diameter of the second internally threaded tube is slightly smaller than the outer diameter of the externally threaded rod, the inner diameter of the third internally threaded tube is slightly smaller than the outer diameter of the first external thread, and the axial length of the third internally threaded tube is equal to that of the first external thread.
Preferably, the external diameters of the second internally threaded tube, the third internally threaded tube and the nut are the same, and the external diameters of the second internally threaded tube, the third internally threaded tube and the nut are all larger than the external diameter of the ring.
The utility model has the beneficial effects that: according to the utility model, the sealing ring is composed of the second internal thread pipe and the third internal thread pipe, the inner diameter of the second internal thread pipe is slightly smaller than the outer diameter of the external thread rod, and the inner diameter of the third internal thread pipe is slightly smaller than the outer diameter of the external thread, so that the sealing ring can be more tightly connected with the external thread rod and the external thread, water vapor and the like are prevented from entering between the first internal thread pipe and the external thread rod, and the first internal thread pipe and the external thread rod are not easy to corrode; the outer diameters of the second internal thread pipe, the third internal thread pipe and the nut are the same, and the outer diameters of the second internal thread pipe, the third internal thread pipe and the nut are all larger than the outer diameter of the circular ring, so that the sealing property between the nut and the mounting surface can be enhanced, water vapor and the like are not easy to enter between the expansion bolt and the mounting hole, and the expansion bolt in the mounting hole is not easy to rust; the ring limits the position of the sleeve, the sleeve above the ring is positioned outside the mounting hole after the sleeve is mounted, an operation space is provided for taking out the sleeve, and the ring and the external thread can be used as operation positions for taking out the sleeve; the mounting hole of expansion bolts uses drilling equipment to bore out basically, the interior a large amount of sweeps of the collection of the mounting hole that drills out, the back is accomplished in the expansion bolts installation, remaining sweeps in the mounting hole, the sleeve inflation leads to factors such as mounting hole deformation can lead to the screw rod to continue to go deep into in the mounting hole, though make the installation of spiral shell more firm but the screw rod also consequently be difficult to take out, and the drill bit can make the screw rod continue to go deep into in the mounting hole, reset the space for the arc resets and provide, third internal thread pipe cooperation second external screw thread can reset the arc, make expansion bolts can be easily extracted and the arc resets after expansion bolts can used repeatedly.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a front view of a reusable expansion bolt of the present invention.
In the figure: the screw rod 1, the prism 11, the external thread rod 12, the circular truncated cone 13, the cylinder 14, the drill bit 15, the sleeve 2, the first internal thread pipe 21, the arc-shaped plate 22, the circular ring 211, the first external thread 212, the fourth internal thread pipe 201, the second external thread 202, the sealing ring 3, the second internal thread pipe 31, the third internal thread pipe 32 and the nut 4.
[ detailed description ] embodiments
Referring to fig. 1, the reusable expansion bolt of the present invention comprises a screw 1, a prism 11, an external threaded rod 12, a circular truncated cone 13, a cylinder 14, a drill 15, a sleeve 2, a first internal threaded rod 21, an arc plate 22, a circular ring 211, a first external thread 212, a sealing ring 3, a second internal threaded rod 31, a third internal threaded rod 32, and a nut 4, wherein the screw 1 mainly comprises the prism 11, the external threaded rod 12, the circular truncated cone 13, the cylinder 14, and the drill 15, the prism 11, the external threaded rod 12, the circular truncated cone 13, the cylinder 14, and the drill 15 are coaxially connected in sequence, the drill 15 is arranged right below the prism 11, the sleeve 2 mainly comprises the first internal threaded rod 21, the arc plate 22, the circular ring 211, and the first external thread 212, the first internal threaded rod 21 is screwed on the external threaded rod 12, the circular ring 211 is coaxially arranged at the upper end of the first internal threaded rod 21, the first external threaded pipe 21 is sleeved with the first external thread 212, the lowermost end of the first internal thread pipe 21 is provided with a plurality of arc-shaped plates 22, a sealing ring 3 is arranged above the circular ring 211, the sealing ring 3 mainly comprises a second internal thread pipe 31 and a third internal thread pipe 32, the lower end face of the second internal thread pipe 31 is provided with a coaxial third internal thread pipe 32, the second internal thread pipe 31 is screwed on the external thread rod 12, the third internal thread pipe 32 is screwed on the first external thread 212, a nut 4 is arranged above the sealing ring 3, the nut 4 is screwed on the external thread rod 12, the horizontal section of the prism 11 is inscribed in the horizontal section of the external thread rod 12, the plurality of arc-shaped plates 22 are circumferentially distributed at the lower end of the first internal thread pipe 21, the arc-shaped plates 22 are coaxial with the first internal thread pipe 21, the inner diameter and the outer diameter of the arc-shaped plates 22 are the same as the inner diameter and the outer diameter of the first internal thread pipe 21, the axial length of the arc-shaped plates 22 is greater than the sum of the axial lengths of the circular truncated cones 13 and the cylinders 14, the outer wall of the first internal thread pipe 21 is provided with a second external thread 202, the second external thread 202 axially extends from the lower end surface of the circular ring 211 to the lowest end of the arc-shaped plate 22, the outer wall of the first internal thread pipe 21 below the circular ring 211 is screwed with a corresponding fourth internal thread pipe 201, the axial length of the fourth internal thread pipe 201 is greater than that of the arc-shaped plate 22, the axial length of the fourth internal thread pipe 201 is less than that of the first internal thread pipe 21 below the circular ring 211, the outer wall of the fourth internal thread pipe 201 is provided with anti-skid vertical threads, the upper bottom of the circular table 13 is coaxially connected with the lower end surface of the external thread rod 12, the outer diameter of the upper bottom of the circular table 13 is the same as that of the lower end surface of the external thread rod 12, the outer diameter of the fourth internal thread pipe 201, the lower bottom of the circular table 13, the outer diameter of the cylinder 14 and the maximum outer diameter of the drill 15 are the same, and the outer diameter of the second internal thread pipe 31 is slightly smaller than that of the external thread rod 12, the internal diameter of the third internal thread pipe 32 is slightly smaller than the external diameter of the first external thread 212, the axial length of the third internal thread pipe 32 and the first external thread 212 is equal, the external diameters of the second internal thread pipe 31, the third internal thread pipe 32 and the nut 4 are the same, and the external diameters of the second internal thread pipe 31, the third internal thread pipe 32 and the nut 4 are all larger than the external diameter of the ring 211.
The working process of the utility model is as follows:
the expansion bolt capable of being reused is firstly used when the expansion bolt is installed in the working process; inserting the expansion bolt into the mounting hole, rotating the sleeve 2 to enable the upper end surface of the fourth internal threaded pipe 201 to prop against the lower end surface of the circular ring 211 in the inserting process, and performing a second step; rotating the external thread rod 12 to enable the plurality of arc-shaped plates 22 to clamp the circular truncated cone 13 and the cylinder 14, wherein the circular truncated cone 13 is positioned below the first internal thread pipe 21, and the fourth step; the nut 4 is tightened. When the expansion bolt is disassembled, the first step is carried out; rotating the external thread rod 12 to make the circular truncated cone 13 positioned below the arc-shaped plate 22, and performing a second step; rotating the sleeve 2 to enable the fourth internal threaded pipe 201 to completely sleeve the arc-shaped plate 22, and performing a third step; and pulling out the expansion bolt.
According to the utility model, the sealing ring 3 is composed of the second internal thread pipe 31 and the third internal thread pipe 32, the inner diameter of the second internal thread pipe 31 is slightly smaller than the outer diameter of the external thread rod 12, and the inner diameter of the third internal thread pipe 32 is slightly smaller than the outer diameter of the first external thread 212, so that the sealing ring 3 can be connected with the external thread rod 12 and the first external thread 212 more tightly, water vapor and the like are prevented from entering between the first internal thread pipe 21 and the external thread rod 12, and the first internal thread pipe 21 and the external thread rod 12 are prevented from being corroded easily; the outer diameters of the second internal threaded pipe 31, the third internal threaded pipe 32 and the nut 4 are the same, and the outer diameters of the second internal threaded pipe 31, the third internal threaded pipe 32 and the nut 4 are all larger than the outer diameter of the ring 211, so that the sealing property between the nut 4 and the mounting surface can be enhanced, water vapor and the like are not easy to enter between the expansion bolt and the mounting hole, and the expansion bolt in the mounting hole is not easy to rust; the ring 211 limits the position of the sleeve 2, the sleeve 2 above the ring 211 is positioned outside the mounting hole after the sleeve 2 is mounted, an operation space is provided for taking out the sleeve 2, and meanwhile, the ring 211 and the first external thread 212 can be used as operation positions for taking out the sleeve 2; expansion bolts's mounting hole is the field usage drilling equipment basically and drills out, a large amount of sweeps of the downthehole collection of mounting that drills out, after the expansion bolts installation, remaining sweeps in the mounting hole, 2 inflation of sleeve lead to factors such as mounting hole deformation can lead to screw rod 1 to continue to go deep into in the mounting hole, though make the installation of spiral shell 1 more firm but screw rod 1 also consequently be difficult to take out, and drill bit 15 can make screw rod 1 continue to go deep into in the mounting hole, reset for arc 22 provides the space that resets, fourth internal thread pipe 201 cooperation second external screw thread 202 can reset arc 22, make expansion bolts can be easily extracted and expansion bolts can used repeatedly after arc 22 resets.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (7)
1. A reusable expansion bolt, characterized in that: comprises a screw rod (1), a prism (11), an external thread rod (12), a circular truncated cone (13), a cylinder (14), a drill bit (15), a sleeve (2), a first internal thread pipe (21), an arc plate (22), a circular ring (211), a first external thread (212), a sealing ring (3), a second internal thread pipe (31), a third internal thread pipe (32) and a nut (4), wherein the screw rod (1) mainly comprises the prism (11), the external thread rod (12), the circular truncated cone (13), the cylinder (14) and the drill bit (15), the prism (11), the external thread rod (12), the circular truncated cone (13), the cylinder (14) and the drill bit (15) are sequentially and coaxially connected, the drill bit (15) is arranged under the prism (11), the sleeve (2) mainly comprises the first internal thread pipe (21), the arc plate (22), the circular ring (211) and the first external thread (212), and the first internal thread pipe (21) is screwed on the external thread rod (12), the upper end cover of first internal thread pipe (21) has coaxial ring (211), and first internal thread pipe (21) outer wall of ring (211) top is equipped with first external screw thread (212), and first internal thread pipe (21) is equipped with a plurality of arc (22) bottom, and the top of ring (211) is equipped with sealing washer (3), sealing washer (3) mainly comprise second internal thread pipe (31), third internal thread pipe (32), and the terminal surface is equipped with coaxial third internal thread pipe (32) under second internal thread pipe (31), and second internal thread pipe (31) are twisted on external screw rod (12), and third internal thread pipe (32) are twisted on first external screw thread (212), and the top of sealing washer (3) is equipped with nut (4), and nut (4) are twisted on external screw rod (12).
2. A reusable expansion bolt as claimed in claim 1, wherein: the horizontal section of the prism (11) is inscribed in the horizontal section of the external thread rod (12).
3. A reusable expansion bolt as claimed in claim 1, wherein: the arc plates (22) are circumferentially distributed at the lower end surface of the first internal threaded pipe (21), the arc plates (22) are coaxial with the first internal threaded pipe (21), the inner diameter and the outer diameter of the arc plates (22) are the same as those of the first internal threaded pipe (21), and the axial length of the arc plates (22) is greater than the sum of the axial lengths of the circular truncated cone (13) and the circular column (14).
4. A reusable expansion bolt as claimed in claim 1, wherein: the outer wall of first internal thread pipe (21) is equipped with second external screw thread (202), second external screw thread (202) are from ring (211) lower terminal surface axial extension to the lower extreme of arc (22), twist on first internal thread pipe (21) outer wall of ring (211) below has fourth internal thread pipe (201) that suits, the axial length of fourth internal thread pipe (201) is greater than the axial length of arc (22), the axial length of fourth internal thread pipe (201) is less than first internal thread pipe (21) axial length of ring (211) below, the outer pipe wall of fourth internal thread pipe (201) is equipped with anti-skidding stria.
5. A reusable expansion bolt as claimed in claim 4, wherein: the upper bottom of the circular truncated cone (13) is coaxially connected with the lower end face of the external threaded rod (12), the outer diameter of the upper bottom of the circular truncated cone (13) is the same as that of the lower end face of the external threaded rod (12), and the outer diameter of the fourth internal threaded pipe (201), the lower bottom of the circular truncated cone (13), the outer diameter of the cylinder (14) and the maximum outer diameter of the drill (15) are the same.
6. A reusable expansion bolt as claimed in claim 1, wherein: the internal diameter of the second internal thread pipe (31) is slightly smaller than the external diameter of the external thread rod (12), the internal diameter of the third internal thread pipe (32) is slightly smaller than the external diameter of the first external thread (212), and the axial length of the third internal thread pipe (32) is equal to that of the first external thread (212).
7. A reusable expansion bolt as claimed in claim 1, wherein: the outer diameters of the second internal threaded pipe (31), the third internal threaded pipe (32) and the nut (4) are the same, and the outer diameters of the second internal threaded pipe (31), the third internal threaded pipe (32) and the nut (4) are all larger than the outer diameter of the circular ring (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122283596.9U CN216343257U (en) | 2021-09-22 | 2021-09-22 | Expansion bolt capable of being repeatedly used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122283596.9U CN216343257U (en) | 2021-09-22 | 2021-09-22 | Expansion bolt capable of being repeatedly used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216343257U true CN216343257U (en) | 2022-04-19 |
Family
ID=81172390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122283596.9U Active CN216343257U (en) | 2021-09-22 | 2021-09-22 | Expansion bolt capable of being repeatedly used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216343257U (en) |
-
2021
- 2021-09-22 CN CN202122283596.9U patent/CN216343257U/en active Active
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