CN213117028U

CN213117028U - Anti-withdrawal pin shaft of tower crane

Info

Publication number: CN213117028U
Application number: CN202021297541.2U
Authority: CN
Inventors: 丁万福; 童凡凡
Original assignee: Foshan Xingyangxin Technology Co ltd
Current assignee: Foshan Xingyangxin Technology Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-05-04
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a tower crane prevent moving back round pin axle, including round pin axle main part, round pin axle main part one end is prismoid, and round pin axle main part center part has seted up cylindrical through-hole to be equipped with fixed ball installation cover in the through-hole of round pin axle main part, round pin axle main part outer wall has seted up the lockpin mounting hole, and the inside lockpin main part that inserts of lockpin mounting hole to curved recess has been seted up to the outer wall of lockpin main part, the spring mounting hole has been seted up at the center part of fixed ball installation cover, and the external fixation of fixed ball installation cover has the retainer plate, inside spring main part and the lockpin fixed ball of being equipped with of spring mounting hole, and the both ends veneer of spring mounting hole is fixed with. This tower crane prevents moving back the round pin axle and is provided with the block structure, can fix the both ends of round pin axle, makes fixing that the round pin axle can be firmly on equipment, avoids the condition that the round pin axle breaks away from to appear.

Description

Anti-withdrawal pin shaft of tower crane

Technical Field

The utility model relates to a tower crane technical field specifically is a tower crane prevent moving back round pin axle.

Background

The tower crane is the most common hoisting equipment on the construction site, also called tower crane, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction by the extension (height) of one section and one section (called standard section for short). The tower crane is an indispensable device on a construction site.

The junction on the current tower crane is generally fixed through round pin axle, and at the in-process that uses, because the tower crane can receive external influence, not hard up condition appears easily in the round pin axle on the tower crane like this, influences tower crane firm in connection like this.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tower crane prevent moving back round pin axle to what put forward in the solution background art because the tower crane can receive external influence, not hard up condition appears easily in the round pin axle on the tower crane like this, influences the problem of tower crane firm in connection nature like this.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a tower crane prevent moving back round pin axle, includes round pin axle main part, round pin axle main part one end is prismoid, and round pin axle main part center part has seted up cylindrical through-hole to be equipped with fixed ball installation cover in the through-hole of round pin axle main part, round pin axle main part outer wall has seted up the lockpin mounting hole, and the inside lockpin main part that inserts of lockpin mounting hole to curved recess has been seted up to the outer wall of lockpin main part, the spring mounting hole has been seted up at the center part of fixed ball installation cover, and the external fixation of fixed ball installation cover has the retainer plate, spring main part and lockpin fixed ball are equipped with to spring mounting hole inside, and the both ends veneer of spring mounting hole.

Preferably, the inner wall of the pin shaft main body is provided with an annular groove, and the inner shape of the groove in the inner wall of the pin shaft main body is matched with the outer shape of the fixing ring.

Preferably, the number of the locking pin fixing balls is 2, the locking pin fixing balls are symmetrically distributed around the center line of the spring main body, and the external radian of the locking pin fixing balls is smaller than the internal radian of the groove in the locking pin main body.

Preferably, the number of the lock pin mounting holes is 4, and the lock pin mounting holes are symmetrically distributed about the center line of the pin shaft main body.

Preferably, the outer diameter of the spring body is smaller than that of the locking pin fixing ball, and the original length of the spring body is larger than that of the fixing ball mounting sleeve.

Preferably, a through hole is formed in the center of the fixing ball clamping piece, and the inner diameter of the through hole in the fixing ball clamping piece is smaller than the outer diameter of the locking pin fixing ball.

Compared with the prior art, the beneficial effects of the utility model are that: this tower crane prevents moving back the round pin axle and is provided with the block structure, can fix the both ends of round pin axle, makes fixing that the round pin axle can be firmly on equipment, avoids the condition that the round pin axle breaks away from to appear. The inside annular groove of the round pin axle main part of the device plays the effect of fixed retainer plate, can block the position of retainer plate, avoids retainer plate and fixed ball installation cover gliding condition to appear, and the fixed ball inside of lockpin is equipped with spring body moreover, can fix the lockpin fixed ball in the recess of lockpin main part outer wall through spring body, fixes the position of lockpin main part, avoids the lockpin main part to break away from in the lockpin mounting hole.

Drawings

FIG. 1 is a schematic view of the structure of an anti-receding pin shaft of a tower crane of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1 of the anti-receding pin shaft of the tower crane of the present invention;

fig. 3 is the utility model relates to a tower crane prevent moving back the cross-sectional view of round pin axle fixing ball installation cover.

In the figure: 1. the pin shaft comprises a pin shaft main body, 2, a lock pin main body, 3, a fixed ball mounting sleeve, 4, a fixing ring, 5, a lock pin fixing ball, 6, a lock pin mounting hole, 7, a spring mounting hole, 8, a spring main body, 9 and a fixed ball clamping piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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. 1-3, the present invention provides a technical solution: a tower crane anti-withdrawal pin comprises a pin body 1, wherein one end of the pin body 1 is in a frustum shape, a cylindrical through hole is formed in the center of the pin body 1, a fixing ball mounting sleeve 3 is arranged in the through hole of the pin body 1, a pin mounting hole 6 is formed in the outer wall of the pin body 1, a pin body 2 is inserted in the pin mounting hole 6, an arc-shaped groove is formed in the outer wall of the pin body 2, an annular groove is formed in the inner wall of the pin body 1, the inner shape of the groove in the inner wall of the pin body 1 is matched with the outer shape of a fixing ring 4, the position of the fixing ring 4 can be clamped by the groove in the pin body 1 with the structure, so that the position of the fixing ring 4 is fixed, the sliding of the fixing ring 4 is avoided, 4 pin mounting holes 6 are formed, and the pin mounting holes 6 are symmetrically distributed about the center line of the pin, the lockpin mounting hole 6 of the structure plays a role of accommodating the lockpin main body 2, so that the lockpin main body 2 can pass through the outer wall of the pin main body 1, the positions of two sides of the pin main body 1 are limited, the pin main body 1 cannot be separated from external equipment, the center part of the fixed ball mounting sleeve 3 is provided with the spring mounting hole 7, the outside of the fixed ball mounting sleeve 3 is fixed with the fixing ring 4, the spring mounting hole 7 is internally provided with the spring main body 8 and the lockpin fixing ball 5, the two ends of the spring mounting hole 7 are fixedly glued with the fixing ball clamping pieces 9, the lockpin fixing balls 5 are totally provided with 2 lockpin, the lockpin fixing balls 5 are symmetrically distributed about the central line of the spring main body 8, the external radian of the lockpin fixing ball 5 is smaller than the internal radian of the groove on the lockpin main body 2, the lockpin fixing ball 5 of the structure can be pushed into the groove on the, so that the lockpin main body 2 can not be separated from the lockpin mounting hole 6, the external diameter of the spring main body 8 is smaller than that of the lockpin fixing ball 5, and the original length of the spring main body 8 is larger than the length of the fixed ball mounting sleeve 3, the spring main body 8 of the structure is under the condition of being compressed in the fixed ball mounting sleeve 3, thus, the two ends of the fixed ball mounting sleeve 3 can push the lockpin fixed ball 5 towards two sides, so that the lockpin fixed ball 5 can clamp the position of the lockpin main body 2, the center part of the fixed ball clamping piece 9 is provided with a through hole, and the inner diameter of the through hole on the fixing ball clamping piece 9 is smaller than the outer diameter of the lockpin fixing ball 5, the through hole on the fixing ball clamping piece 9 of the structure plays a role of containing the lockpin fixing ball 5, so that the arc-shaped end on the lockpin fixing ball 5 can extend out, meanwhile, the lockpin fixing ball 5 can be clamped in the fixing ball mounting sleeve 3, and the lockpin fixing ball 5 is prevented from being separated from the fixing ball mounting sleeve 3.

The working principle is as follows: when the anti-withdrawal pin shaft of the tower crane is used, firstly, the prismatic table-shaped end of the pin shaft main body 1 of the device is inserted into external equipment, the lockpin mounting holes 6 on the pin shaft main body 1 are positioned at two sides of the equipment, then the lockpin main body 2 is inserted into the lockpin mounting holes 6, one end of the lockpin fixing ball 5 can be propped in the groove on the outer wall of the lockpin main body 2, thereby fixing the position of the lock pin main body 2, preventing the lock pin main body 2 from being separated from the lock pin mounting hole 6, and the annular groove on the inner wall of the lockpin main body 2 can clamp the position of the fixed ring 4, so as to fix the positions of the fixed ring 4 and the fixed ball mounting sleeve 3, and the spring body 8 in the spring mounting hole 7 can push the locking pin fixing ball 5 towards two sides, so that the arc-shaped end of the locking pin fixing ball 5 can pass through the through hole on the fixing ball clamping piece 9 to be fixed on the locking pin body 2, thereby completing a series of work.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a tower crane prevent moving back round pin axle, includes round pin axle main part (1), its characterized in that: the hinge pin comprises a hinge pin body (1), wherein one end of the hinge pin body (1) is frustum-shaped, a cylindrical through hole is formed in the center of the hinge pin body (1), a fixing ball mounting sleeve (3) is arranged in the through hole of the hinge pin body (1), a lock pin mounting hole (6) is formed in the outer wall of the hinge pin body (1), a lock pin body (2) is inserted into the lock pin mounting hole (6), an arc-shaped groove is formed in the outer wall of the lock pin body (2), a spring mounting hole (7) is formed in the center of the fixing ball mounting sleeve (3), a fixing ring (4) is fixed outside the fixing ball mounting sleeve (3), a spring body (8) and a lock pin fixing ball (5) are arranged inside the spring mounting hole (7), and fixing ball clamping pieces (9) are fixed at the two ends of the spring mounting hole.

2. The anti-receding pin shaft of the tower crane according to claim 1, wherein: the inner wall of the pin shaft main body (1) is provided with an annular groove, and the inner shape of the groove in the inner wall of the pin shaft main body (1) is matched with the outer shape of the fixing ring (4).

3. The anti-receding pin shaft of the tower crane according to claim 1, wherein: the number of the locking pin fixing balls (5) is 2, the locking pin fixing balls (5) are symmetrically distributed around the center line of the spring main body (8), and the external radian of each locking pin fixing ball (5) is smaller than the internal radian of the groove in the locking pin main body (2).

4. The anti-receding pin shaft of the tower crane according to claim 1, wherein: the number of the lock pin mounting holes (6) is 4, and the lock pin mounting holes (6) are symmetrically distributed around the center line of the pin shaft main body (1).

5. The anti-receding pin shaft of the tower crane according to claim 1, wherein: the outer diameter of the spring main body (8) is smaller than that of the lockpin fixing ball (5), and the original length of the spring main body (8) is larger than that of the fixing ball mounting sleeve (3).

6. The anti-receding pin shaft of the tower crane according to claim 1, wherein: the center of the fixing ball clamping piece (9) is provided with a through hole, and the inner diameter of the through hole on the fixing ball clamping piece (9) is smaller than the outer diameter of the locking pin fixing ball (5).