CN219136201U - Fixing structure for locking positioning pin shaft of round steel standard section of tower crane - Google Patents
Fixing structure for locking positioning pin shaft of round steel standard section of tower crane Download PDFInfo
- Publication number
- CN219136201U CN219136201U CN202223510922.6U CN202223510922U CN219136201U CN 219136201 U CN219136201 U CN 219136201U CN 202223510922 U CN202223510922 U CN 202223510922U CN 219136201 U CN219136201 U CN 219136201U
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- pin
- locking
- round steel
- positioning pin
- positioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to the field of tower crane round steel accessories, in particular to a tower crane round steel standard knot locking positioning pin shaft fixing structure capable of effectively improving the locking effect between a positioning pin and main chord round steel, which comprises the main chord round steel and the positioning pin, wherein the bottom of the positioning pin is arranged in a positioning hole of the main chord round steel, the positioning pin and the positioning hole are coaxially arranged, at least two locking columns are arranged at the bottom of the positioning pin, the locking columns extend downwards along the direction vertical to the bottom of the positioning pin, an expansion gap is arranged between every two adjacent locking columns, a conical pin is arranged in the expansion gap, and the conical tip of the conical pin faces to the bottom of the positioning pin; when the positioning pin is pressed into the positioning hole, the conical pin presses the locking column outwards to open and the bottom of the positioning pin is locked in the positioning hole. The utility model is especially suitable for the fixing structure of the locking positioning pin shaft of the round steel standard section of the tower crane.
Description
Technical Field
The utility model relates to the field of tower crane round steel accessories, in particular to a fixing structure of a locking positioning pin shaft of a tower crane round steel standard joint.
Background
The positioning pin shaft of the tower crane is generally used in a tower body standard section of the tower crane. The upper part of the tower crane can rise to be tens of meters or even hundreds of meters by the connection of tens of standard knots. At present, common positioning pins are used in domestic industries, and are arranged at the center of the standard section main chord round steel in advance during shipping, but the positioning pins are easy to fall off during transportation, so that inconvenience is brought to installation. When the tower crane is disassembled after long-term use, the positioning pin shaft is easy to clamp with the upper main chord round steel due to corrosion and is taken off by the upper main chord round steel, so that safety accidents are easy to occur due to falling from high altitude, and great potential safety hazards are caused.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the tower crane round steel standard knot locking positioning pin shaft fixing structure capable of effectively improving the locking effect between the positioning pin and the main chord round steel.
The technical scheme adopted for solving the technical problems is as follows: the tower crane round steel standard knot locking positioning pin shaft fixing structure comprises main chord round steel and positioning pins, wherein the bottoms of the positioning pins are arranged in positioning holes of the main chord round steel, the positioning pins and the positioning holes are coaxially arranged, at least two locking columns are arranged at the bottoms of the positioning pins, the locking columns extend downwards along the direction perpendicular to the bottoms of the positioning pins, expansion gaps are formed between the adjacent locking columns, conical pins are arranged in the expansion gaps, and conical tips of the conical pins face to the bottoms of the positioning pins; when the positioning pin is pressed into the positioning hole, the conical pin presses the locking column outwards to open and the bottom of the positioning pin is locked in the positioning hole.
Further, the number of the locking columns is four, the locking columns are uniformly distributed around the central axis of the bottom of the locating pin, a locating pin embedding hole is formed in the geometric center of the bottom of the locating pin, and the locating pin is arranged in the locating pin embedding hole.
Further, the cross section of the locking column is in a sector shape, and the central angle of the sector is 90 degrees.
Further, the cross section of the locating pin is circular.
Further, the positioning pin embedding hole is arranged in the positioning hole.
The beneficial effects of the utility model are as follows: in actual use, the taper pin is first placed in the expansion gap between the locking posts at the bottom of the locating pin. Subsequently, the locating pin bottom and the taper pin are placed in the locating hole of the main chord round steel. And then, the positioning pin is pressed into the positioning hole, and the locking column is outwards extruded and spread due to the shape characteristics of the conical pin, so that the bottom of the positioning pin is locked in the positioning hole, and the positioning pin is firmly locked in the positioning hole. The utility model is especially suitable for the fixing structure of the locking positioning pin shaft of the round steel standard section of the tower crane.
Drawings
Fig. 1 is a schematic view of a dowel of the present utility model.
Fig. 2 is a bottom schematic view of fig. 1.
Fig. 3 is a schematic view of the locating pin disposed in the locating hole of the major chord round steel.
Marked in the figure as: a locating pin 1, a locating pin embedding hole 2, an expansion gap 3, a locking column 4, a conical pin 5, a main chord round steel 6 and a locating hole 61.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The tower crane round steel standard knot locking positioning pin shaft fixing structure comprises a main chord round steel 6 and a positioning pin 1, wherein the bottom of the positioning pin 1 is arranged in a positioning hole 61 of the main chord round steel 6, the positioning pin 1 and the positioning hole 61 are coaxially arranged, at least two locking columns 4 are arranged at the bottom of the positioning pin 1, the locking columns 4 extend downwards along the direction perpendicular to the bottom of the positioning pin 1, an expansion gap 3 is arranged between every two adjacent locking columns 4, a conical pin 5 is arranged in the expansion gap 3, and the conical tip of the conical pin 5 faces the bottom of the positioning pin 1; when the positioning pin 1 is pressed into the positioning hole 61, the tapered pin 5 presses the locking column 4 outwards to spread and lock the bottom of the positioning pin 1 into the positioning hole 61. In general, it is preferable that the cross section of the positioning pin 1 is circular.
As shown in fig. 1, 2 and 3, a cross-shaped expansion gap 3 and four locking posts 4 are formed by drilling and forming a cross-shaped groove in the bottom of the positioning pin 1, so that the bottom of the positioning pin 1 can be expanded by the taper pin 5. When the taper pin 5 is installed in the positioning hole 61 and the positioning pin is forced to move into the positioning hole 61, the acting force of the positioning pin 1 enables the taper pin 5 to contact the hole bottom of the positioning hole 61, the reaction force expands the expansion gap 3 and drives the four locking columns 4 to expand towards the periphery and tightly fit with the inner wall of the positioning hole 61, so that the positioning pin 1 is firmly fixed on the main chord round steel 6. The positioning pin shaft can be effectively prevented from falling off during transportation and disassembly, convenience is brought to installation, and potential safety hazards are eliminated. The number of the locking columns 4 is preferably four, the locking columns 4 are uniformly distributed around the central axis of the bottom of the positioning pin 1, the positioning pin embedding holes 2 are formed in the geometric center of the bottom of the positioning pin 1, and the positioning pin 1 is arranged in the positioning pin embedding holes 2. This structure can form a more stable locking support structure. Further, the cross-sectional shape of the locking post 4 is preferably a sector, and the central angle of the sector is preferably 90 degrees.
In actual use, the positioning pin insertion hole 2 is preferably provided in the positioning hole 61, so that when the locking post 4 is expanded by the taper pin 5, the whole expanded deformation is ensured to be in the positioning hole 61, thereby effectively improving the fastening effect.
Claims (5)
1. The utility model provides a tower machine round steel standard festival locking locating pin axle fixed knot constructs, includes main string round steel (6) and locating pin (1), the bottom of locating pin (1) sets up in locating hole (61) of main string round steel (6), and locating pin (1) and locating hole (61) coaxial arrangement, its characterized in that: the bottom of the locating pin (1) is provided with at least two locking columns (4), the locking columns (4) extend downwards along the direction perpendicular to the bottom of the locating pin (1), an expansion gap (3) is arranged between the adjacent locking columns (4), a conical pin (5) is arranged in the expansion gap (3), and the conical tip of the conical pin (5) faces the bottom of the locating pin (1); when the positioning pin (1) is pressed into the positioning hole (61), the conical pin (5) presses the locking column (4) outwards to open and enable the bottom of the positioning pin (1) to be locked in the positioning hole (61).
2. The tower crane round steel standard knot locking positioning pin shaft fixing structure according to claim 1, wherein: the four locking columns (4) are uniformly distributed around the central axis of the bottom of the locating pin (1), a locating pin embedding hole (2) is formed in the geometric center of the bottom of the locating pin (1), and the locating pin (1) is arranged in the locating pin embedding hole (2).
3. The tower crane round steel standard knot locking positioning pin shaft fixing structure according to claim 2, wherein: the cross section of the locking column (4) is in a sector shape, and the central angle of the sector is 90 degrees.
4. The tower crane round steel standard knot locking positioning pin shaft fixing structure according to claim 2, wherein: the cross section of the locating pin (1) is round.
5. The tower crane round steel standard knot locking positioning pin shaft fixing structure according to claim 2, 3 or 4, wherein: the locating pin embedding hole (2) is arranged in the locating hole (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223510922.6U CN219136201U (en) | 2022-12-28 | 2022-12-28 | Fixing structure for locking positioning pin shaft of round steel standard section of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223510922.6U CN219136201U (en) | 2022-12-28 | 2022-12-28 | Fixing structure for locking positioning pin shaft of round steel standard section of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219136201U true CN219136201U (en) | 2023-06-06 |
Family
ID=86565612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223510922.6U Active CN219136201U (en) | 2022-12-28 | 2022-12-28 | Fixing structure for locking positioning pin shaft of round steel standard section of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219136201U (en) |
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2022
- 2022-12-28 CN CN202223510922.6U patent/CN219136201U/en active Active
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