CN211501240U - Expansion anchor bolt for up-down double expansion of anti-seismic support - Google Patents
Expansion anchor bolt for up-down double expansion of anti-seismic support Download PDFInfo
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- CN211501240U CN211501240U CN201922215861.2U CN201922215861U CN211501240U CN 211501240 U CN211501240 U CN 211501240U CN 201922215861 U CN201922215861 U CN 201922215861U CN 211501240 U CN211501240 U CN 211501240U
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- 238000010276 construction Methods 0.000 description 3
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- 238000009434 installation Methods 0.000 description 3
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Abstract
The utility model relates to an expansion anchor bolt that expands about is used for antidetonation support, include: the anchor bolt rod is an oblique connecting top sleeve formed by connecting an upper expansion section, a main section and a lower expansion section which are sequentially connected, and the upper end of the oblique connecting top sleeve is provided with an expansion top sleeve and a flange nut, wherein the small end of the expansion top sleeve is positioned at the frustum-shaped top of the upper side; the anchor rod includes: the upper end of the bolt rod is provided with a frustum-shaped expansion head, and the outer diameter of the bolt rod is larger than the diameter of the bolt rod and is coaxially connected with the lower end of the bolt rod; the oblique top sleeve is sleeved outside the bolt rod, and the inner diameter of the oblique top sleeve is matched with the outer diameter of the bolt; the lower end of the inner hole of the oblique top sleeve is provided with a frustum-shaped hole matched with the frustum-shaped top head; the expansion top sleeve is sleeved outside the screw rod, and the frustum-shaped top head extends into the frustum-shaped hole; the flange nut is positioned at the lower side of the expansion top sleeve and is in threaded connection with the screw rod. The expansion anchor bolt for the upper and lower double-expansion of the anti-seismic support reduces the diameter of a mounting hole on a building, reduces the strength of the building less, is stably connected with the mounting hole, and has better mounting strength.
Description
Technical Field
The utility model belongs to the technical field of the support equipment technique and specifically relates to an expansion anchor bolt that expands about two for antidetonation support.
Background
In view of the great destructiveness of earthquake, the earthquake resistance is an important construction index which must be considered before building construction, and the laying of pipelines in the building is an important factor influencing the earthquake resistance; the earthquake-resistant support is used for installing electromechanical engineering facilities such as building water supply, drainage, fire fighting, heating, ventilation, air conditioning, gas, electric power, heating power, communication and the like, can limit the displacement of the attached electromechanical engineering facilities when an earthquake occurs, controls the vibration of the facilities, transmits load to various components or devices on a bearing structure, lightens earthquake damage, and reduces or prevents secondary disasters as much as possible, thereby reducing casualties and property loss; seismic supports are often fixed to floors, walls or columns by means of expansion anchors; the construction of an expansion anchor is known from the expansion anchor disclosed in the utility model of the chinese patent application No. 201680018925.6; traditional expansion anchor's crab-bolt pole is equipped with the screw rod section of constant diameter, in order to improve screw thread intensity, the crab-bolt pole will be adorned oblique joint top sleeve smoothly, oblique joint top sleeve's hole need be greater than the diameter of crab-bolt pole, thereby the diameter of oblique joint top telescopic external diameter and the mounting hole on the building has been increaseed, and the inflation region is only one, there is not being unfavorable for the miniaturization of expansion anchor and the material uses more, it is more to reduce building intensity, be connected not enough firm and the lower not enough of mounting strength with the mounting hole, therefore, design one kind and do benefit to the miniaturization of expansion anchor and the material uses less, reduce the mounting hole diameter on the building, it is less to reduce building intensity, be connected firm and the higher upper and lower two expansion anchor that are used for the antidetonation support of mounting strength with the mounting hole, become the problem of treating.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming present expansion anchor has to be unfavorable for the miniaturization of expansion anchor and the material uses more, and it is more to reduce building intensity, is connected not firm enough and the lower not enough of installation intensity with the mounting hole, provides one kind and does benefit to the miniaturization of expansion anchor and the material uses less, reduces the mounting hole diameter on the building, and it is less to reduce building intensity, is connected firm and the better expansion anchor who is used for two expansions of upper and lower of installing intensity with the mounting hole.
The utility model discloses a concrete technical scheme is:
an upper and lower double-expanding expansion anchor for an anti-seismic stent, comprising: the anchor bolt rod is an oblique connecting top sleeve formed by connecting an upper expansion section, a main section and a lower expansion section which are sequentially connected, and the upper end of the oblique connecting top sleeve is provided with an expansion top sleeve and a flange nut, wherein the small end of the expansion top sleeve is positioned at the frustum-shaped top of the upper side; the anchor rod includes: the upper end of the bolt rod is provided with a frustum-shaped expansion head, and the outer diameter of the bolt rod is larger than the diameter of the bolt rod and is coaxially connected with the lower end of the bolt rod; the oblique top sleeve is sleeved outside the bolt rod, and the inner diameter of the oblique top sleeve is matched with the outer diameter of the bolt; the lower end of the inner hole of the oblique top sleeve is provided with a frustum-shaped hole matched with the frustum-shaped top head; the expansion top sleeve is sleeved outside the screw rod, and the frustum-shaped top head extends into the frustum-shaped hole; the flange nut is positioned at the lower side of the expansion top sleeve and is in threaded connection with the screw rod. The expansion anchor bolt for the upper and lower double-expansion of the anti-seismic bracket has the advantages that the outer diameter of the screw is larger than the diameter of the bolt rod, so that the thread strength is ensured, the outer diameter of the oblique-connection top sleeve and the diameter of the mounting hole on a building are reduced, the expansion anchor bolt is beneficial to miniaturization, less materials are used, and the strength of the building is reduced; the oblique top connecting sleeve is provided with an upper expansion section and a lower expansion section, a frustum-shaped expansion head of the bolt rod is matched with the upper expansion section, the expansion top sleeve is matched with the lower expansion section, the frustum-shaped top head extends into a frustum-shaped hole, and the outer diameter of the upper expansion section and the outer diameter of the lower expansion section are expanded up and down by rotating the flange nut, so that the oblique top connecting sleeve is stably connected with the mounting hole and has higher mounting strength; and reversely screwing out the flange nut, and then installing and connecting the anti-seismic support.
Preferably, the side wall of the upper expansion section is provided with a plurality of axial grooves which are distributed along the circumferential direction and the upper ends of which are communicated with the upper end of the upper expansion section; an arc-shaped transition ring groove and a plurality of annular grooves are formed in the outer side of the upper expansion section, the arc-shaped transition ring groove is communicated with the lower end of the axial groove, and the annular grooves are formed between the arc-shaped transition ring groove and the upper end of the upper expansion section. The arc-shaped transition ring groove and the annular groove of the upper expansion section are beneficial to enabling the upper expansion section to expand outwards with small force when the frustum-shaped expansion head is inserted into the upper expansion section.
Preferably, the side wall of the lower expansion section is provided with a plurality of axial grooves which are distributed along the circumferential direction and the lower ends of which are communicated with the lower end of the lower expansion section; the outer side of the lower expansion section is surrounded with an arc-shaped transition ring groove which is respectively communicated with the upper end of the axial groove, and a plurality of annular grooves which are arranged between the arc-shaped transition ring groove and the lower end of the lower expansion section. The arc-shaped transition ring groove and the annular groove of the lower expansion section are beneficial to enabling the lower expansion section to expand outwards with small force when the frustum-shaped top head extends into the frustum-shaped hole.
Preferably, the upper end of the inner hole of the oblique top sleeve is provided with a guide chamfer. The frustum-shaped expansion head can be inserted into the upper expansion section conveniently.
Preferably, the upper end of the frustum-shaped hole is lower than the upper end of the axial groove on the lower expansion section. The lower expansion section is favorable for outward expansion and enlargement and the strength is ensured.
Preferably, the outer diameter of the expansion top sleeve is equal to or smaller than that of the oblique top sleeve.
Preferably, the inner side of the expansion top sleeve is surrounded with a spherical crown-shaped convex block extending into the space between two adjacent teeth of the screw rod. The expansion top sleeve can not fall off without being held by hands during installation.
Compared with the prior art, the beneficial effects of the utility model are that: the expansion anchor bolt for the upper and lower double-expansion of the anti-seismic bracket has the advantages that the outer diameter of the screw is larger than the diameter of the bolt rod, so that the thread strength is ensured, the outer diameter of the oblique-connection top sleeve and the diameter of the mounting hole on a building are reduced, the expansion anchor bolt is beneficial to miniaturization, less materials are used, and the strength of the building is reduced; the oblique top connecting sleeve is provided with an upper expansion section and a lower expansion section, a frustum-shaped expansion head of the bolt rod is matched with the upper expansion section, the expansion top sleeve is matched with the lower expansion section, the frustum-shaped top head extends into a frustum-shaped hole, and the outer diameter of the upper expansion section and the outer diameter of the lower expansion section are expanded up and down by rotating the flange nut, so that the oblique top connecting sleeve is stably connected with the mounting hole and has higher mounting strength; and reversely screwing out the flange nut, and then installing and connecting the anti-seismic support. The arc-shaped transition ring groove and the annular groove of the upper expansion section are beneficial to enabling the upper expansion section to expand outwards with small force when the frustum-shaped expansion head is inserted into the upper expansion section. The arc-shaped transition ring groove and the annular groove of the lower expansion section are beneficial to enabling the lower expansion section to expand outwards with small force when the frustum-shaped top head extends into the frustum-shaped hole. The upper end of the inner hole of the oblique top connecting sleeve is provided with a guide chamfer, so that a frustum-shaped expansion head can be inserted into the upper expansion section conveniently. The upper end of the frustum-shaped hole is lower than the upper end of the axial groove on the lower expansion section, so that the lower expansion section is favorably expanded outwards, and the strength is ensured. The inner side of the expansion top sleeve is surrounded with a spherical convex block extending into the space between two adjacent teeth of the screw rod, so that the expansion top sleeve can not fall off without being held by hands during installation.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the anchor rod;
FIG. 3 is a schematic structural view of a miter roof sleeve;
FIG. 4 is a schematic view of the construction of an expansion plug wrap;
FIG. 5 is a schematic view of a screw and a bolt body.
In the figure: the device comprises an upper expansion section 1, a main section 2, a lower expansion section 3, a frustum-shaped top head 4, an expansion top sleeve 5, a flange nut 6, a frustum-shaped expansion head 7, a bolt rod 8, a screw rod 9, a frustum-shaped hole 10, an axial groove 11, an arc-shaped transition ring groove 12, an annular groove 13, a guide chamfer 14, a spherical crown-shaped bump 15 and a bolt rod body 16.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in figures 1 to 5: an upper and lower double-expanding expansion anchor for an anti-seismic stent, comprising: the anchor bolt rod is a slantwise-connected top sleeve formed by integrally connecting an upper expansion section 1, a main section 2 and a lower expansion section 3 which are sequentially connected, and the upper end of the anchor bolt rod is provided with an expansion top sleeve 5 and a flange nut 6, wherein the small end of the expansion top sleeve 5 is positioned at the upper side of a frustum-shaped top head 4; the anchor rod includes: the upper end of the bolt rod 8 is provided with a frustum-shaped expansion head 7, and the outer diameter of the bolt rod 8 is larger than the diameter of the bolt rod 8 and is coaxial with the lower end of the bolt rod 8 to form a screw rod 9 which is connected with the bolt rod; the oblique top-contacting sleeve is sleeved outside the bolt rod 8, and the inner diameter of the oblique top-contacting sleeve is in clearance fit with the outer diameter of the bolt; the lower end of the inner hole of the oblique top sleeve is provided with a frustum-shaped hole 10 matched with the frustum-shaped top head 4; the expansion top sleeve 5 is sleeved outside the screw rod 9, and the frustum-shaped top head 4 extends into the frustum-shaped hole 10; the flange nut 6 is positioned at the lower side of the expansion top sleeve 5 and is in threaded connection with the screw rod 9.
The side wall of the upper expansion section 1 is provided with four axial grooves 11 which are uniformly distributed along the circumferential direction and the upper ends of which are communicated with the upper end of the upper expansion section 1; the lower end of the outer side of the upper expansion section 1 is provided with an arc-shaped transition ring groove 12 and two annular grooves 13, wherein the arc-shaped transition ring groove 12 is communicated with the lower end of the axial groove 11, and the two annular grooves 13 are arranged between the arc-shaped transition ring groove 12 and the upper end of the upper expansion section 1.
The side wall of the lower expansion section 3 is provided with four axial grooves 11 which are uniformly distributed along the circumferential direction and the lower ends of which are communicated with the lower end of the lower expansion section 3; the lower end of the outer side of the lower expansion section 3 is provided with an arc-shaped transition ring groove 12 and two annular grooves 13, wherein the arc-shaped transition ring groove 12 is respectively communicated with the upper end of the axial groove 11, and the two annular grooves are arranged between the arc-shaped transition ring groove 12 and the lower end of the lower expansion section 3.
The upper end of the inner hole of the oblique top-contacting sleeve is provided with a guide chamfer 14.
The upper end of the frustum-shaped hole 10 is lower than the upper end of the axial groove 11 on the lower expansion section 3.
The outer diameter of the expansion top sleeve 5 is equal to that of the oblique top sleeve.
The inner side of the expansion top sleeve 5 is surrounded with a spherical crown-shaped convex block 15 extending between two adjacent teeth of the screw rod 9.
The manufacturing method of the expansion anchor bolt for up-down double expansion of the anti-seismic bracket comprises the following steps of (1) machining an anchor bolt blank with the length larger than that of an anchor bolt to manufacture a screw rod 9, and machining the rest part of the anchor bolt blank to a bolt rod body 16 with the diameter being the outer diameter of the bolt rod 8, wherein the volume of the bolt rod body 16 is equal to the sum of the volume of the bolt rod 8 and the volume of the frustum-shaped expansion head 7; (2) sleeving the oblique joint jacking sleeve manufactured by machining outside the bolt body 16; (3) heating and forging one end of the bolt body 16 extending out of the oblique top sleeve to form a frustum-shaped expansion head 7; (4) sleeving an expansion top sleeve manufactured by machining outside the screw rod 9, and rotating the expansion top sleeve 5 to enable the spherical crown-shaped convex block 15 to extend into a space between two adjacent teeth of the screw rod 9 and enable the frustum-shaped top head 4 to extend into the frustum-shaped hole 10; (5) the flange nut 6 is screwed with the screw 9.
In addition to the above embodiments, the technical features or technical data of the present invention can be selected and combined again within the scope disclosed in the claims and the specification of the present invention to constitute new embodiments, which can be realized by those skilled in the art without creative efforts, and therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.
Claims (7)
1. An upper and lower double-expanding expansion anchor for an anti-seismic stent, comprising: anchor rod, characterized by, the expansion anchor bolt that is used for two expansions of upper and lower of antidetonation support still include: the oblique top sleeve is formed by connecting an upper expansion section, a main section and a lower expansion section which are connected in sequence, and the upper end of the oblique top sleeve is provided with an expansion top sleeve and a flange nut, wherein the small end of the expansion top sleeve is positioned at the frustum-shaped top of the upper side; the anchor rod includes: the upper end of the bolt rod is provided with a frustum-shaped expansion head, and the outer diameter of the bolt rod is larger than the diameter of the bolt rod and is connected with the lower end of the bolt rod; the oblique top sleeve is sleeved outside the bolt rod, and the inner diameter of the oblique top sleeve is matched with the outer diameter of the bolt; the lower end of the inner hole of the oblique top sleeve is provided with a frustum-shaped hole matched with the frustum-shaped top head; the expansion top sleeve is sleeved outside the screw rod, and the frustum-shaped top head extends into the frustum-shaped hole; the flange nut is positioned at the lower side of the expansion top sleeve and is in threaded connection with the screw rod.
2. The expansion anchor bolt for the upper and lower double-expansion of an anti-seismic bracket as set forth in claim 1, wherein the side wall of the upper expansion section is provided with a plurality of axial grooves which are distributed along the circumferential direction and the upper ends of which are communicated with the upper end of the upper expansion section; an arc-shaped transition ring groove and a plurality of annular grooves are formed in the outer side of the upper expansion section, the arc-shaped transition ring groove is communicated with the lower end of the axial groove, and the annular grooves are formed between the arc-shaped transition ring groove and the upper end of the upper expansion section.
3. The expansion anchor bolt for the upper and lower double-expansion of an anti-seismic bracket as set forth in claim 1, wherein the side wall of the lower expansion section is provided with a plurality of axial grooves which are distributed along the circumferential direction and the lower ends of which are communicated with the lower end of the lower expansion section; the outer side of the lower expansion section is surrounded with an arc-shaped transition ring groove which is respectively communicated with the upper end of the axial groove, and a plurality of annular grooves which are arranged between the arc-shaped transition ring groove and the lower end of the lower expansion section.
4. An expansion anchor bolt with upper and lower double expansion for an anti-seismic support according to claim 1 or 2, characterized in that the upper end of the inner hole of the oblique top sleeve is provided with a guide chamfer.
5. An upper and lower double-expanded expansion anchor bolt for an anti-seismic stent as defined in claim 1 or 3, wherein the upper end of said frustum-shaped hole is lower than the upper end of the axial groove formed in the lower expansion section.
6. An expandable anchor bolt for earthquake-resistant support according to claim 1, 2 or 3, wherein the outer diameter of the expandable top sleeve is equal to or less than that of the oblique top sleeve.
7. An expansion anchor bolt with double expansion for an anti-seismic support according to claim 1, 2 or 3, wherein the inner side of the expansion top sleeve is surrounded by a spherical crown-shaped projection extending between two adjacent teeth of the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215861.2U CN211501240U (en) | 2019-12-11 | 2019-12-11 | Expansion anchor bolt for up-down double expansion of anti-seismic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215861.2U CN211501240U (en) | 2019-12-11 | 2019-12-11 | Expansion anchor bolt for up-down double expansion of anti-seismic support |
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| CN211501240U true CN211501240U (en) | 2020-09-15 |
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| CN201922215861.2U Active CN211501240U (en) | 2019-12-11 | 2019-12-11 | Expansion anchor bolt for up-down double expansion of anti-seismic support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255785A (en) * | 2019-12-11 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
-
2019
- 2019-12-11 CN CN201922215861.2U patent/CN211501240U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255785A (en) * | 2019-12-11 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
| CN111255785B (en) * | 2019-12-11 | 2022-01-11 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
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