CN111677733B

CN111677733B - Ring-buckle type pin shaft anti-drop assembly for engineering machinery

Info

Publication number: CN111677733B
Application number: CN202010564578.5A
Authority: CN
Inventors: 王海金; 张继光; 孙余; 单昌猛; 耿倩斌
Original assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Current assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-07-05
Anticipated expiration: 2040-06-19
Also published as: CN111677733A

Abstract

The invention discloses a ring-buckle type pin shaft anti-falling assembly for engineering machinery, and belongs to the field of engineering machinery. The pin shaft structure comprises a pin shaft, wherein a spacer bush is sleeved at the end part of the pin shaft, and opposite round holes are formed in the end part of the pin shaft and the wall of the spacer bush; anti-falling bolts are inserted into the round holes of the pin shaft and the spacer bush in a matching way, and two ends of each anti-falling bolt are respectively provided with a lock hole; and the spring steel wire ring buckles are sleeved outside the spacer sleeves and penetrate through the lock holes at the two ends of the anti-falling bolt. During assembly, firstly installing the pin shaft and the spacer bush, inserting the anti-falling bolt, and screwing the spring steel wire buckle into the lock holes at two ends of the anti-falling bolt; because the aperture of anticreep bolt both ends lockhole is different, the part that the spring wire latch closure number of turns is greater than 1 can not pass through the lockhole of the anticreep bolt other end all the time, has ensured that the spring wire latch closure can not because of the number of turns too little free drunkenness back-out anticreep bolt, causes the dropout accident.

Description

Ring-buckle type pin shaft anti-drop assembly for engineering machinery

Technical Field

The invention relates to the field of engineering machinery, in particular to a ring-buckle type pin shaft anti-falling assembly for engineering machinery.

Background

At present, the anti-falling mode of the engineering machinery pin shaft mainly comprises a standard component anti-falling mode and a self-made anti-falling mode. The former includes anti-drop devices such as locking washer cotter pins; the latter includes welded and assembled pin baffles fastened with bolts. The two anti-falling modes have certain defects for the anti-falling mode of the pin shaft of the engineering machinery. The former lock washer cannot be tightened and has a low load-bearing capacity in the loose condition, and therefore has low anti-slip reliability. The thinner split pin has lower bearing capacity and is easy to cause fracture failure. The bolt-fastened welding and assembly pin baffle plate has the possibility of looseness due to the fastening of the bolts, and the reliability is low.

The engineering machinery has severe working conditions, and the load acting on the pin shaft has the characteristics of large load and more vibration impact. Once the pin shafts at some key parts fail to prevent falling off, the pin shafts can cause vicious accidents such as machine collapse after the pin shafts break off. Once the pin shafts at the higher parts fail to prevent falling off, the falling devices can cause safety accidents of constructors. Therefore, the anti-falling of the pin shaft in the field of engineering machinery requires high reliability and high bearing capacity.

Disclosure of Invention

The invention aims to provide a ring-buckled type pin shaft anti-falling assembly for engineering machinery, so that the pin shaft anti-falling reliability and the bearing capacity in the field of engineering machinery are improved.

The invention is realized by the following technical scheme: a ring-buckle type pin shaft anti-drop assembly for engineering machinery comprises a pin shaft, wherein a spacer bush is sleeved at the end part of the pin shaft, and opposite round holes are formed in the end part of the pin shaft and the wall of the spacer bush; anti-falling bolts are inserted into the round holes of the pin shaft and the spacer bush in a matching way, and two ends of each anti-falling bolt are respectively provided with a lock hole; and the spring steel wire ring buckles are sleeved outside the spacer sleeves and penetrate through the lock holes at the two ends of the anti-falling bolt.

Preferably: the number of turns of the spring steel wire ring buckle is more than 1.5 and less than 2; the lockhole of anticreep bolt one end can pass through 2 steel wires in the spring wire eye, and the lockhole of the anticreep bolt other end only can pass through 1 steel wire in the spring wire eye.

Compared with the prior art, the invention has the beneficial effects that: during assembly, the pin shaft and the spacer bush are installed firstly, the anti-falling bolt is inserted, and the spring steel wire ring buckle is screwed into the lock holes at two ends of the anti-falling bolt; because the aperture of anticreep bolt both ends lockhole is different, the part that the spring wire eye ring number of turns is greater than 1 can not pass through the lockhole of the anticreep bolt other end all the time, has ensured that the spring wire eye ring can not be because of the number of turns too little free drunkenness back spin out the anticreep bolt, cause the obscission.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a front view of an embodiment of the present invention;

in the figure: 1. a pin shaft; 2. a spacer sleeve; 3. the spring steel wire is buckled; 4. anti-drop bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, in the ring-buckle type pin anti-drop assembly for engineering machinery, a spacer 2 is sleeved on an end of a pin 1, and opposite round holes are formed in the end of the pin 1 and the wall of the spacer 2 for fixing an anti-drop bolt 4. The round holes of the pin shaft 1 and the spacer bush 2 are matched and inserted with the anti-falling bolt 4, the anti-falling bolt 4 selects a proper diameter according to the bearing calculation of the pin shaft, and the anti-falling bolt 4 is prevented from falling and losing efficacy when bearing a certain axial force; two ends of the anti-falling bolt 4 are respectively provided with a lock hole. The spacer 2 is externally sleeved with a spring steel wire ring buckle 3, and the spring steel wire ring buckle 3 passes through lock holes at two ends of the anti-falling bolt 4.

Further: the number of turns of the spring steel wire buckle 3 is more than 1.5 and less than 2; the lockhole of 4 one ends of anticreep bolt can only pass through 1 steel wire in the spring wire latch closure 3 through 2 steel wires in the spring wire latch closure 3, the lockhole of the 4 other ends of anticreep bolt.

During assembly, firstly installing the pin shaft and the spacer bush, inserting the anti-falling bolt, and screwing the spring steel wire buckle into the lock holes at two ends of the anti-falling bolt; because the aperture of anticreep bolt both ends lockhole is different, the part that the spring wire eye ring number of turns is greater than 1 can not pass through the lockhole of the anticreep bolt other end all the time, has ensured that the spring wire eye ring can not be because of the number of turns too little free drunkenness back spin out the anticreep bolt, cause the obscission.

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

1. A ring-buckle type pin roll anti-drop component for engineering machinery, which comprises a pin roll (1),

the method is characterized in that:

the end part of the pin shaft (1) is sleeved with a spacer bush (2), and opposite round holes are formed in the end part of the pin shaft (1) and the wall of the spacer bush (2);

an anti-falling bolt (4) is inserted into the round holes of the pin shaft (1) and the spacer bush (2) in a matching way, and two ends of the anti-falling bolt (4) are respectively provided with a lock hole;

the spring steel wire ring buckles (3) are sleeved outside the spacer sleeve (2), and the spring steel wire ring buckles (3) penetrate through lock holes at two ends of the anti-falling bolt (4);

the number of turns of the spring steel wire ring buckle (3) is more than 1.5 and less than 2; the lock hole at one end of the anti-falling bolt (4) can pass through 2 steel wires in the spring steel wire ring buckle (3), and the lock hole at the other end of the anti-falling bolt (4) can only pass through 1 steel wire in the spring steel wire ring buckle (3);

because the aperture of anticreep bolt (4) both ends lockhole is different, the part that spring wire eye (3) number of turns is greater than 1 can not pass through the lockhole of anticreep bolt (4) other end all the time, has ensured that spring wire eye (3) can not be because of the number of turns is too few free drunkenness and unscrew anticreep bolt (4), causes the accident of droing.