CN219221008U

CN219221008U - Novel anti-drop bolt of tower crane standard festival

Info

Publication number: CN219221008U
Application number: CN202223513773.9U
Authority: CN
Inventors: 杜振龙; 卫涛; 吴家云; 王闯; 谷海洋
Original assignee: Civil Aviation Airport Construction Engineering Co Ltd
Current assignee: Civil Aviation Airport Construction Engineering Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-20
Anticipated expiration: 2032-12-28

Abstract

A novel anti-drop bolt of a tower crane standard knot relates to the technical field of hardware tools and comprises a bolt body, a C-shaped anti-drop piece, a nut, a fastening sleeve and a positioning bolt. The novel anti-loosening device can prevent the bolt body and the nut from relative rotation, and plays a good anti-loosening role on the premise of not damaging the original structure of the bolt and the nut, thereby effectively ensuring the connection safety between standard sections of the tower crane.

Description

Novel anti-drop bolt of tower crane standard festival

Technical Field

The utility model relates to a hardware and tools technical field, concretely relates to novel anti-drop bolt of tower crane standard festival.

Background

The standard section bolt of the tower crane is used for connecting adjacent standard sections of the tower body of the tower crane, and the existing standard section bolt of the tower crane does not have a locking structure, so that the following problems exist in use:

1. the tower crane frequently lifts and drops the heavy object, and the suspension arm repeatedly starts and brakes in an anti-repetition mode, so that the tower body bears bending moment and torque which are frequently changed alternately in positive and negative directions, and the standard section bolt is easy to loosen.

2. In the prior patent literature, a plurality of lockbolts are used for locking by destroying the original structures of the bolts and nuts, which easily causes the structural strength of the bolts and nuts to be reduced, and the lockbolts are not suitable for tower cranes bearing huge acting forces.

Disclosure of Invention

The utility model provides a novel anti-drop bolt of tower crane standard festival, purpose solve among the prior art 1, 2 the problem.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a novel anti-drop bolt of tower crane standard festival, includes bolt body, C shape anticreep spare, nut, adapter sleeve, positioning bolt, the bolt body include the nut, connect in the screw rod of nut lower extreme, the screw rod including being located the regular prism structure on upper portion and integrated into one piece in the screw thread section of regular prism structure bottom, the last free end of C shape anticreep spare is equipped with first solid fixed ring, first hole and the regular prism structure of first solid fixed ring match to slide and cup joint outside the regular prism structure, the height of regular prism structure be higher than the height of first hole, the lower free end of C shape anticreep spare be equipped with the solid fixed ring of second, the solid fixed ring of second and first solid fixed ring coaxial, and the second hole of second solid fixed ring be the circular hole, the circular hole be equipped with the internal thread to the spiro union has the adapter sleeve, the one end of second solid fixed ring be equipped with run through the second hole and with the positioning bolt of the solid fixed ring spiro union of second.

Preferably, the length of the screw rod is as follows: the nut can be screwed in from the bottom of the screw in an initial state, and the thread segments are inserted into the second inner holes as the nut is screwed.

Preferably, the inner diameter of the fastening sleeve is larger than the outer diameter of the threaded section, and the outer diameter of the fastening sleeve is smaller than or equal to the distance between the opposite edges of the nut.

Preferably, the internal thread of the second inner hole is opposite to the thread section, and when the fastening sleeve is screwed into the second inner hole and is propped against the bottom end of the nut upwards, the loosening rotation direction of the nut is the screwing direction of the fastening sleeve.

Preferably, the bottom end of the fastening sleeve is provided with an inner hexagonal screwing interface.

Preferably, the top end of the thread section is inscribed on the bottom end of the regular prism structure.

Preferably, the regular prism structure is a regular hexagonal prism or a regular quadrangular prism.

Preferably, the size of the C-shaped anti-falling member is as follows: can cooperate with the link lateral wall of the tower body standard festival of tower crane to restrict the rotation of bolt body.

The novel anti-drop bolt of tower crane standard festival's beneficial effect does:

the novel anti-loosening device can prevent the bolt body and the nut from relative rotation, and plays a good anti-loosening role on the premise of not damaging the original structure of the bolt and the nut, thereby effectively ensuring the connection safety between standard sections of the tower crane.

Description of the drawings:

FIG. 1 is a schematic diagram of the initial structure of the novel device in use;

FIG. 2 is a schematic diagram of the structure of the bolt body when the novel bolt is in use;

FIG. 3 is a schematic structural view of the novel fastening sleeve and the positioning bolt after being screwed in use;

FIG. 4 is a schematic structural view of the novel bolt body;

FIG. 5 is a schematic view of the bottom view of the novel fastening sleeve;

1. a bolt body; 1-1, a nut; 1-2, regular prism structure; 1-3, a thread section; 2. c-shaped anti-falling piece; 3. a first fixing ring; 4. a second fixing ring; 5. a fastening sleeve; 5-1, an inner hexagonal screwing interface; 6. positioning bolts; 7. the connecting end of the lower standard section; 8. the connecting end of the upper standard section.

The specific embodiment is as follows:

the following detailed description of the embodiments of the present utility model in a stepwise manner is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present utility model should be included in the scope of the present utility model.

In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, and specific azimuth configuration and operation, and thus should not be construed as limiting the present utility model.

The utility model provides a novel anti-drop bolt of tower crane standard festival, shown in fig. 1-5, includes bolt body 1, C shape anticreep spare 2, nut (not marked in the figure), adapter sleeve 5, positioning bolt 6, bolt body 1 include nut 1-1, connect in the screw rod of nut lower extreme, the screw rod include the regular prism structure 1-2 that is located upper portion and integrated into one piece in the screw thread section 1-3 of regular prism structure bottom, the last free end of C shape anticreep spare 2 is equipped with first solid fixed ring 3, the first hole of first solid fixed ring 3 match with regular prism structure 1-2 to the slip cup joint outside regular prism structure, the height of regular prism structure 1-2 be higher than the height of first hole, the lower free end of C shape anticreep spare be equipped with second solid fixed ring 4, second solid fixed ring 4 and first solid fixed ring 3 coaxial, and the second hole of second solid fixed ring 4 be the circular hole, the circular hole be equipped with the internal thread to connect with adapter sleeve 5, second solid fixed ring 4 and the second fixed ring of second solid fixed ring 4 and positioning bolt 6 of running through that is equipped with.

As shown in fig. 1-5, the length of the screw is as follows: the nut can be screwed in from the bottom of the screw in an initial state, and the thread segments are inserted into the second inner holes as the nut is screwed.

As shown in fig. 1-5, the inner diameter of the fastening sleeve 5 is larger than the outer diameter of the threaded section, and the outer diameter of the fastening sleeve 5 is smaller than or equal to the distance between the opposite edges of the nut. Therefore, the top of the fastening sleeve can be guaranteed to prop against the bottom end of the nut, and the nut is prevented from loosening.

As shown in fig. 1-5, the internal thread of the second inner hole has a rotation direction opposite to that of the thread segments 1-3, and when the fastening sleeve 5 is screwed into the second inner hole and is abutted against the bottom end of the nut upwards, the loosening rotation direction of the nut is the screwing direction of the fastening sleeve 5. The nut will become flexible, and the tight cover can screw on the contrary, can withstand the nut after screwing, avoids the nut to become flexible.

As shown in fig. 1-5, the bottom end of the fastening sleeve 5 is provided with an inner hexagonal screwing interface 5-1, so that the fastening sleeve 5 can be conveniently screwed by using a tool.

As shown in fig. 4, the top ends of the thread segments 1-3 are inscribed in the bottom ends of the regular prism structures 1-2.

As shown in fig. 4, the regular prism structure is a regular hexagonal prism or a regular quadrangular prism.

As shown in fig. 1-3, the size of the C-shaped anti-drop member 2 is as follows: can cooperate with the connecting end side wall of the tower body standard section of the tower crane to limit the rotation of the bolt body 1. After the connecting end 8 of the upper standard section and the connecting end 7 of the lower standard section are locked by the bolt body and the nut, the C-shaped anti-falling piece 2 is clamped at the side wall (generally, the side wall is in clearance fit with the side wall) of the connecting end 8 of the upper standard section and the connecting end 7 of the lower standard section, so that the rotation of the bolt body is prevented.

The utility model discloses a set up as above, can prevent that bolt body and nut from taking place relative rotation, under the prerequisite that does not destroy the original structure of bolt and nut, played good locking effect to effectively guaranteed the connection safety between the tower crane standard festival.

Claims

1. A novel anti-drop bolt of tower crane standard festival, characterized by: including bolt body, C shape anticreep spare, nut, adapter sleeve, positioning bolt, the bolt body include the nut, connect in the screw rod of nut lower extreme, the screw rod including the regular prism structure that is located upper portion and integrated into one piece in the screw thread section of regular prism structure bottom, the last free end of C shape anticreep spare is equipped with first solid fixed ring, first hole and the regular prism structure of first solid fixed ring match to slide and cup joint outside the regular prism structure, the height of regular prism structure be higher than the height of first hole, the lower free end of C shape anticreep spare be equipped with the second solid fixed ring, the second solid fixed ring coaxial with first solid fixed ring, and the second hole of second solid fixed ring is the circular hole, the circular hole be equipped with the internal thread to the spiro union has the adapter sleeve, the one end of second solid fixed ring be equipped with the positioning bolt that runs through the second hole and with the solid fixed ring spiro union of second.

2. The novel anti-drop bolt of a standard knot of a tower crane according to claim 1, which is characterized in that: the length of the screw rod is as follows: the nut can be screwed in from the bottom of the screw in an initial state, and the thread segments are inserted into the second inner holes as the nut is screwed.

3. The novel anti-drop bolt of the standard knot of the tower crane is characterized in that: the inner diameter of the fastening sleeve is larger than the outer diameter of the threaded section, and the outer diameter of the fastening sleeve is smaller than or equal to the distance between the opposite edges of the nut.

4. A novel anti-drop bolt of a standard knot of a tower crane according to claim 3, which is characterized in that: the internal thread of the second inner hole is opposite to the thread section in rotation direction, and when the fastening sleeve is screwed into the second inner hole and is propped against the bottom end of the nut upwards, the loosening rotation direction of the nut is the screwing direction of the fastening sleeve.

5. The novel anti-drop bolt of the tower crane standard knot as claimed in claim 4, wherein: the bottom end of the fastening sleeve is provided with an inner hexagonal screwing interface.

6. The novel anti-drop bolt of the tower crane standard knot as claimed in claim 5, wherein the anti-drop bolt is characterized in that: the top end of the thread section is inscribed at the bottom end of the regular prism structure.

7. The novel anti-drop bolt of the tower crane standard knot as claimed in claim 6, wherein: the regular prism structure is regular hexagonal prism or regular quadrangular prism.

8. The novel anti-drop bolt of the tower crane standard knot as claimed in claim 7, wherein: the size of the C-shaped anti-falling piece is as follows: can cooperate with the link lateral wall of the tower body standard festival of tower crane to restrict the rotation of bolt body.