CN213628406U - Drawing block type unilateral bolt fastener - Google Patents
Drawing block type unilateral bolt fastener Download PDFInfo
- Publication number
- CN213628406U CN213628406U CN202022486237.9U CN202022486237U CN213628406U CN 213628406 U CN213628406 U CN 213628406U CN 202022486237 U CN202022486237 U CN 202022486237U CN 213628406 U CN213628406 U CN 213628406U
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- Prior art keywords
- nut
- sleeve
- shaped
- block
- drawing block
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- Expired - Fee Related
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- 238000009434 installation Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000011089 mechanical engineering Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a drawing block type unilateral bolt fastener, wherein, the inner side of a high-strength main screw nut is provided with 4L-shaped baffles, a drawing block is arranged between every two L-shaped baffles, the inner side of the drawing block is provided with a region for placing a rotating shaft support and a rotating plate, and the two sides of the region are provided with strip-shaped grooves matched with a protruding block at one end of the rotating plate in advance; one end of the sleeve matched with the high-strength main screw rod is provided with an arc-shaped bulge embedded with the 4L-shaped baffles, and a strip-shaped groove matched with the bulge block at the other end of the rotating plate is arranged in the sleeve. Before installation, 4 pulling blocks are hidden in a nut and an L-shaped baffle, a fastener is implanted into a hole of a connected workpiece by taking one end of the nut as the positive direction, the tail part of the high-strength main screw rod is fixed by one hand, a small nut is fastened by the other hand, the pulling blocks are slightly pulled back after being screwed, the pulling blocks are in contact with the inside of the sealed workpiece, and then the large nut is screwed to finish the fixing work. The utility model discloses only need carry out the installation of bolt in one side, realized the unilateral operation of bolt, satisfy steel construction design requirement in intensity to simple structure, low in cost, convenient assembling, but wide application in fields such as civil construction structure, mechanical engineering.
Description
Technical Field
The utility model relates to a take out unilateral bolt fastener of piece formula belongs to civil construction engineering and mechanical assembly connection field.
Background
At present, in the field of civil engineering and mechanical connection and fastening, the installation demand for connection and fastening of structural members is very huge, and a common bolt composed of a screw rod and a nut is generally used, when fastening operation is carried out, the screw rod is inserted into one side and the nut is clamped, then the nut is screwed by a tool on the other side, and when the bolt is installed, an installer is required to simultaneously operate on two sides of the structural member. However, the use of such commonly used bolts is inconvenient in relation to the installation of more conventional open section members, for example, closed section members and members which are not conveniently accessible on one side. In many cases, hand holes are required during construction, which further weakens the section strength, resulting in the bolt strength not reaching the theoretical value. The common expansion one-way bolt cannot meet the design requirement under a large load due to the fact that the application of the pretightening force of the bolt is difficult to realize. The core-through bolt in the prior art has extremely high requirement on the reserved precision of the bolt hole, is difficult to install on site and is difficult to apply to the joint of the side column and the corner column. The existing single-side bolt is not suitable for a large-span or large-load structure, and needs a complex mounting tool and complex mounting steps.
For example, in steel pipe structure (square steel pipe or round steel pipe), steel pipe concrete structure, beam column connected node etc. department, because the post cross-section is mostly closed cross-section, ordinary bolt can not operate on both sides, can only operate the connection installation in the unilateral, therefore traditional bolt and nut connecting fastener can't satisfy the fastening installation of similar structure.
SUMMERY OF THE UTILITY MODEL
The technical problem who solves, to prior art not enough, the utility model provides a can overcome not enough, that current bolt can not unilateral fastening that take out the unilateral bolt fastener of piece formula that is used for the unilateral installation of component that is used for of improvement bolt-up effect, still can be as required, convenient dismantlement, repeatedly usable.
The technical scheme to be adopted is as follows: the drawing block type unilateral bolt fastener comprises a high-strength main screw rod, a sleeve matched with the high-strength main screw rod, a large nut used for fixing a workpiece and a small nut used for fixing the sleeve, wherein an L-shaped baffle, a drawing block and a rotating plate are arranged on a nut at the top of the high-strength main screw rod.
In the utility model, 4L-shaped baffles are arranged at the inner side of the high-strength main screw nut, 4 pumping blocks are arranged between every two L-shaped baffles, the inner side of each pumping block is provided with an area for placing a rotating shaft support and a rotating plate, and strip-shaped grooves matched with the protruding blocks at one end of the rotating plate are pre-opened at the two sides of the area; one end of the sleeve matched with the high-strength main screw rod is provided with an arc-shaped bulge embedded with the 4L-shaped baffles, and a strip-shaped groove matched with the bulge block at the other end of the rotating plate is arranged in the sleeve; during installation, 4 are taken out the piece and are hidden in nut and L type baffle to nut one end is the positive direction, implants the fastener in the hole of being connected the work piece, and the little nut of fastening is in order to screw up the sleeve afterwards, makes the rotor plate rotatory through telescopic fastening, extrudes and takes out the piece, and the big nut of fastening is in order to fix the work piece afterwards to realize the unilateral fastening of component.
In the preferred embodiment of the present invention, when the drawing block is hidden in the nut and the L-shaped baffle, the fastener just passes through the hole of the connected workpiece.
The utility model discloses an among the preferred scheme, during little nut fastening sleeve, when removing to the nut through the sleeve, make the rotor plate rotatory to the piece is taken out in the extrusion, L type baffle on sleeve and the nut gomphosis becomes a whole just this moment, presents the wholeness in the outward appearance.
The utility model has the advantages that:
the utility model only needs to install the bolt on one side of the workpiece, thereby realizing the unilateral operation of the bolt;
the high-strength main screw rod and the inner side of the closed workpiece form a larger contact surface, and are not easy to pull out under the action of load, so that the fastening effect is good, and the workpiece is prevented from being damaged due to larger cross-section stress;
compared with the existing unilateral fastening bolt made of special materials, the unilateral fastening bolt does not need to use special materials and does not depend on material deformation to form support, thereby avoiding the hidden danger caused by further deformation due to material fatigue;
the utility model discloses when using, use nut one end to implant the hole of being connected the work piece as the positive direction with the fastener, then the afterbody of the fixed main screw rod that excels in of one hand, little nut of another hand fastening is pulled back a little after screwing up, makes and takes out inside the piece contact seals the work piece, screws up big nut afterwards and accomplishes fixed work promptly. When the high-strength main screw rod needs to be disassembled, the large nut and the small nut are sequentially loosened, the tail of the high-strength main screw rod is fixed by one hand, the sleeve is pulled back by the other hand, and the workpiece is pulled out. Compared with the prior art, can realize unilateral implementation fastening operation, still can be as required, convenient dismantlement, repeatedly usable.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the utility model before the drawing block is drawn out; FIG. 2a is a schematic overall three-dimensional view; FIG. 2b is a three-dimensional view of the interior of the sleeve taken along a diameter; FIG. 2c is a three-dimensional schematic view of a high-strength main screw; FIG. 2d is a schematic view of the inner side of the high-strength main screw;
FIG. 3 is a schematic diagram of the utility model after the drawing block is drawn out; FIG. 3a is a schematic overall three-dimensional view; FIG. 3b is a three-dimensional view of the interior of the sleeve taken along a diameter; FIG. 3c is a three-dimensional schematic view of a high-strength main screw; FIG. 3d is a schematic view of the inner side of the high-strength main screw;
FIG. 4a is a schematic view of a sleeve; FIG. 4b is a schematic plan view of the side of the sleeve near the nut;
FIG. 5a is a cross-sectional view of the drawer block before being extracted; FIG. 5b is a cross-sectional view of the pump block after extraction;
FIG. 6a is a schematic view of a fastener after it has been installed in a hole; fig. 6b is a usage effect diagram.
In the figure: 1 is a high-strength main screw rod; 1a is a screw cap; 1b is an L-shaped baffle; 1c is a rotary shaft support; 2, a drawing block; 3 is a rotating plate; 3a is a convex block; 3b is a sleeve groove; 3c is a drawing block groove; 4 is a sleeve; 5 is a small nut; 6 is a big nut; 7 is a closed workpiece; and 8 is a workpiece.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments of the specification, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, in the present embodiment, a drawer-type single-side bolt fastener is configured as follows: the high-strength main screw rod (1), the pulling block (2), the rotating plate (3), the sleeve (4), the small nut (5) and the large nut (6) are arranged, an L-shaped baffle (1b) and a rotating shaft support (1c) are arranged on the inner side of a nut (1a) of the high-strength main screw rod (1), the rotating plate is provided with a protruding block (3a), and a sleeve groove (3b) matched with the protruding block (3a) and a pulling block groove (3c) are respectively formed in the sleeve (4) and the pulling block (2).
The inner side of the high-strength main screw nut is provided with 4L-shaped baffles, a pumping block is arranged between every two L-shaped baffles, the inner side of the pumping block is provided with an area for placing a rotating shaft support and a rotating plate, and two sides of the area are provided with strip-shaped grooves matched with a protruding block at one end of the rotating plate in advance; one end of the sleeve matched with the high-strength main screw rod is provided with an arc-shaped bulge embedded with the 4L-shaped baffles, and a strip-shaped groove matched with the bulge block at the other end of the rotating plate is arranged in the sleeve.
Before installation, the connected workpiece is ensured to be provided with holes with the diameter slightly larger than the diameter of the sections of the nut of the high-strength main screw rod and the sleeve, 4 pulling blocks are hidden in the nut and the L-shaped baffle, a fastener is implanted into the holes of the connected workpiece by taking one end of the nut as the positive direction, the nut and the pulling blocks are ensured to completely penetrate through the reserved holes at the moment, the pulling blocks can be smoothly pulled out, then the tail part of the high-strength main screw rod is fixed by one hand, the small nut is fastened by the other hand, the pulling blocks are slightly pulled back after being screwed, the pulling blocks are in contact with the inside of the sealed workpiece, and then the large.
Compared with the prior art, can realize unilateral implementation fastening operation, still can be as required, convenient dismantlement, repeatedly usable.
When the high-strength main screw rod needs to be disassembled, the large nut and the small nut are sequentially loosened, the tail of the high-strength main screw rod is fixed by one hand, and the sleeve is pulled back by the other hand, so that the pulling block is reset into the screw cap and the L-shaped baffle again. And then the fastener is drawn out of the workpiece hole.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A draw out unilateral bolt fastener of piece formula, its characterized in that: including excel in spindle screw (1), take out piece (2), rotor plate (3), sleeve (4), little nut (5), big nut (6), nut (1a) inboard of excel in spindle screw (1) is equipped with L type baffle (1b) and pivot support (1c), is equipped with protruding piece (3a) on the rotor plate, sets up respectively on sleeve (4) and take out piece (2) with protruding piece (3a) assorted sleeve recess (3b) and take out piece recess (3 c).
2. The draw block type single-sided bolt fastener of claim 1, wherein: the section diameters of a nut (1a) and a sleeve (4) of the high-strength main screw rod (1) are slightly smaller than the diameter of a hole of a connected workpiece.
3. The draw block type single-sided bolt fastener of claim 1, wherein: the drawing block (2) is hidden in the screw cap (1a) and the L-shaped baffle (1b) before installation, one end of the screw cap (1a) is implanted into a hole of a connected workpiece in the positive direction to be deep enough, the screw cap (1a) and the drawing block (2) are guaranteed to completely penetrate through the reserved hole, and the drawing block (2) can be smoothly drawn out.
4. The draw block type single-sided bolt fastener of claim 1, wherein: the rotary plate (3) is extruded out of the drawing block (2) through the rotation of the sleeve (4), a section with the longest diameter larger than that of the hole is formed on one side of the closed workpiece, and the other side of the connected workpiece is fastened through the large nut (6), so that unilateral fastening is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022486237.9U CN213628406U (en) | 2020-10-31 | 2020-10-31 | Drawing block type unilateral bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022486237.9U CN213628406U (en) | 2020-10-31 | 2020-10-31 | Drawing block type unilateral bolt fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628406U true CN213628406U (en) | 2021-07-06 |
Family
ID=76627800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022486237.9U Expired - Fee Related CN213628406U (en) | 2020-10-31 | 2020-10-31 | Drawing block type unilateral bolt fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628406U (en) |
-
2020
- 2020-10-31 CN CN202022486237.9U patent/CN213628406U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |