CN220011947U - Pin shaft fixing device suitable for tower crane - Google Patents

Abstract

The utility model relates to the technical field of tower cranes, and discloses a pin shaft fixing device suitable for a tower crane, which comprises a first structural member, a second structural member and a pin shaft main body, wherein the second structural member is rotationally connected with the first structural member through the pin shaft main body, a pin shoulder is arranged at one end of the pin shaft main body, a groove for the pin shoulder to be clamped in is formed in one side of the first structural member, limiting blocks which are attached to the pin shoulder are symmetrically rotationally arranged at the side wall of the first structural member, an anti-deflection assembly is arranged between the two limiting blocks, a blocking sleeve is sleeved at one end position of the pin shaft main body, which is far away from the pin shoulder, is attached to the outer side wall of the first structural member, and a positioning assembly is arranged between the blocking sleeve and the pin shaft main body. The utility model is convenient for axially limiting the two ends of the tower crane pin shaft, so that the tower crane pin shaft cannot axially move, thereby greatly improving the stability of the tower crane pin shaft.

Description

Pin shaft fixing device suitable for tower crane

Technical Field

The utility model relates to the technical field of tower cranes, in particular to a pin shaft fixing device suitable for a tower crane.

Background

The tower crane is mainly used for vertical transportation of materials and component installation in multi-storey and high-rise building construction and consists of a metal structure, a working mechanism and an electric system.

Because the tower crane continuously repeats no-load, hanging weight and rotation, the lifting arm and the balance arm pull rod inevitably swing back and forth and left and right, the rotation and axial movement of the pull rod connecting pin shaft can be caused, and the axial movement trend can be aggravated along with the natural abrasion of the pin hole on the pin shaft lug plate. Because the split pin bearing capacity of the fixed connection pin shaft is limited, the split pin is cut off when the axial movement of the connection pin shaft is serious, the connection pin shaft is dropped, and even safety accidents such as tower crane overturning occur.

Disclosure of Invention

The utility model aims to solve the problems in the background art, and provides a pin fixing device suitable for a tower crane.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a round pin axle fixing device suitable for tower machine, includes first structure, second structure and round pin axle main part, the second structure rotates with first structure through round pin axle main part and is connected, the round pin shoulder is installed to the one end of round pin axle main part, the recess that supplies the round pin shoulder card to go into is seted up to one side of first structure, and the lateral wall department symmetry rotation of first structure install the stopper that laminates mutually with the round pin shoulder, two install between the stopper and prevent deflection assembly, the one end position department cover that the round pin axle main part kept away from the round pin shoulder is equipped with keeps off the cover, keep off the cover and laminate mutually with the lateral wall of first structure, and keep off and install locating component between cover and the round pin axle main part.

Preferably, the deflection preventing assembly comprises a limiting rod connected to opposite sides of the two limiting blocks, the opposite ends of the two limiting rods are provided with protruding blocks, the two protruding blocks are symmetrically arranged, one protruding block is provided with a threaded pin, and the other protruding block is provided with a threaded hole for the threaded pin to be screwed in.

Preferably, the positioning assembly comprises a pin hole formed in one end of the pin shaft main body, which is far away from the pin shoulder, a through hole corresponding to the pin hole is formed in the blocking sleeve in a penetrating mode, an adaptive bolt is inserted into the pin hole and the through hole together, and a locking nut is installed at the end portion of the bolt in a threaded mode.

Preferably, the protruding blocks are of semi-cylindrical structures, and opposite sides of the two protruding blocks are of rectangular structures.

Preferably, the inner section of the retaining sleeve is of a circular structure, and the outer section of the retaining sleeve is of a rectangular structure.

Compared with the prior art, the utility model provides the pin shaft fixing device suitable for the tower crane, which has the following beneficial effects:

1. this round pin axle fixing device suitable for tower machine makes things convenient for round pin shoulder card of round pin axle main part tip to go into through the recess, and cooperation stopper makes it laminate mutually with the round pin shoulder to the convenience carries out axial spacing to the round pin shoulder, and cooperation fender cover and locating component are convenient carries out further position to the other end of round pin axle main part and is prescribe a limit to, makes the axial displacement can not take place for the tower machine round pin axle, thereby greatly improves the stability of tower machine round pin axle.

2. This round pin axle fixing device suitable for tower machine makes two stopper that laminate mutually with the shoulder of pin can not take place the position deflection through preventing deflection assembly to improve the spacing stability of axial.

The device has the advantages that the non-related parts are the same as or can be realized by adopting the prior art, and the axial limiting is conveniently carried out on the two ends of the pin shaft of the tower crane, so that the pin shaft of the tower crane cannot axially move, and the stability of the pin shaft of the tower crane is greatly improved.

Drawings

Fig. 1 is a schematic structural view of a pin fixing device suitable for a tower crane according to the present utility model;

FIG. 2 is a perspective view of a connecting portion of two stoppers according to the present utility model;

FIG. 3 is a perspective view of the connection portion between the pin body and the collar in the present utility model;

fig. 4 is a perspective view of a connecting portion of a pin body and a shoulder in the present utility model.

In the figure: 1. a first structural member; 2. a second structural member; 3. a pin main body; 4. a pin shoulder; 5. a groove; 6. a limiting block; 7. a blocking sleeve; 8. a limit rod; 9. a bump; 10. a threaded pin; 11. a threaded hole; 12. a pin hole; 13. a bolt; 14. and (5) locking the nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1, a round pin axle fixing device suitable for tower machine, including first structure 1, second structure 2 and round pin axle main part 3, second structure 2 rotates through round pin axle main part 3 with first structure 1 to be connected, round pin shoulder 4 is installed to the one end of round pin axle main part 3, recess 5 that supplies round pin shoulder 4 card to go into is seted up to one side of first structure 1, and the lateral wall department symmetry rotation of first structure 1 install the stopper 6 that laminates mutually with round pin shoulder 4, it is convenient to carry out axial spacing to round pin axle main part 3, install between two stoppers 6 and prevent deflection unit, be convenient for lock the position of stopper 6, improve the stability of its position.

Referring to fig. 1-2, the deflection preventing assembly comprises a limiting rod 8 connected to opposite sides of two limiting blocks 6, wherein the opposite ends of the two limiting rods 8 are provided with protruding blocks 9, the two protruding blocks 9 are symmetrically arranged, the protruding blocks 9 are of semi-cylindrical structures, the opposite sides of the two protruding blocks 9 are of rectangular structures, the protruding blocks 9 at the end parts of the two limiting rods 8 are mutually attached after the two limiting blocks 6 are conveniently deflected, one protruding block 9 is provided with a threaded pin 10, the other protruding block 9 is provided with a threaded hole 11 for screwing in the threaded pin 10, and the threaded pin 10 is rotated to be in threaded connection with the threaded hole 11, so that the two protruding blocks 9 are conveniently connected together, and the two limiting blocks 6 cannot be deflected in position subsequently.

Referring to fig. 1 and 3-4, a retaining sleeve 7 is sleeved at the position of one end of the pin shaft main body 3 far away from the pin shoulder 4, the retaining sleeve 7 is attached to the outer side wall of the first structural member 1, a positioning component is installed between the retaining sleeve 7 and the pin shaft main body 3, the positioning component comprises a pin hole 12 formed in the position of the pin shaft main body 3 far away from the pin shoulder 4, a through hole corresponding to the pin hole 12 is formed in the retaining sleeve 7 in a penetrating manner, an adaptive bolt 13 is inserted into the pin hole 12 and the through hole together, a locking nut 14 is installed at the end portion of the bolt 13 in a threaded manner, the inner section of the retaining sleeve 7 is of a circular structure, the outer section of the retaining sleeve 7 is of a rectangular structure, and the locking nut 14 is conveniently attached to the outer side wall of the retaining sleeve 7 tightly.

Working principle: after the pin shoulder 4 at the end part of the pin shaft main body 3 is matched with the groove 5, the two limiting blocks 6 are respectively rotated to be matched with the pin shoulder 4, the protruding blocks 9 at the end part of the two limiting rods 8 are mutually matched, the threaded pin 10 is rotated to be screwed into the threaded hole 11 of one of the protruding blocks 9, the two protruding blocks 9 can be connected together, the two limiting blocks 6 can not deflect and always keep the joint state with the pin shoulder 4, the pin shaft main body 3 is axially limited, the blocking sleeve 7 is sleeved at one end of the pin shaft main body 3 far away from the pin shoulder 4, the blocking sleeve 7 is matched with the outer side wall of the first structural member 1, the bolt 13 penetrates through the through hole in the side wall of the blocking sleeve 7 and penetrates through the pin hole 12 in the pin shaft main body 3, the blocking sleeve 7 can be fixed in position by screwing the locking nut 14, so that the axial limiting effect of the pin shaft main body 3 is further improved, the pin shaft main body 3 can not axially move, and the stability is ensured.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. The utility model provides a round pin axle fixing device suitable for tower machine, includes first structure, second structure and round pin axle main part, the second structure rotates with first structure through the round pin axle main part and is connected, its characterized in that, the round pin shoulder is installed to the one end of round pin axle main part, the recess that supplies the round pin shoulder card to go into is seted up to one side of first structure, and the lateral wall department symmetry rotation of first structure install the stopper that laminates mutually with the round pin shoulder, two install between the stopper and prevent deflection assembly, the one end position department cover that the round pin axle main part kept away from the round pin shoulder is equipped with keeps off the cover, keep off the cover and laminate mutually with the lateral wall of first structure, and keep off and install locating component between cover and the round pin axle main part.

2. The pin shaft fixing device suitable for the tower crane according to claim 1, wherein the deflection preventing assembly comprises limiting rods connected to opposite sides of the two limiting blocks, protruding blocks are installed at opposite ends of the two limiting rods, the two protruding blocks are symmetrically arranged, a threaded pin is installed on one protruding block, and a threaded hole for screwing in the threaded pin is formed in the other protruding block.

3. The pin shaft fixing device suitable for the tower crane according to claim 1, wherein the positioning assembly comprises a pin hole formed in one end of the pin shaft body away from the pin shoulder, a through hole corresponding to the pin hole is formed in the blocking sleeve in a penetrating mode, an adaptive bolt is inserted into the pin hole and the through hole together, and a locking nut is installed at the end portion of the bolt in a threaded mode.

4. The pin shaft fixing device for a tower crane according to claim 2, wherein the protruding block has a semi-cylindrical structure, and opposite sides of the protruding block have rectangular structures.

5. The pin shaft fixing device for a tower crane according to claim 1, wherein the inner cross section of the retaining sleeve is of a circular structure, and the outer cross section of the retaining sleeve is of a rectangular structure.