CN211343880U

CN211343880U - Hoisting ring hoisting chain

Info

Publication number: CN211343880U
Application number: CN201921957268.9U
Authority: CN
Inventors: 姜崎伍; 闫涛; 李刚
Original assignee: RUI STEEL INDUSTRY Co Ltd OF PANZHIHUA GANGCHENG GROUP
Current assignee: RUI STEEL INDUSTRY Co Ltd OF PANZHIHUA GANGCHENG GROUP
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-25
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to a rings lifting chain belongs to hoist technical field. The utility model discloses a chain link that a plurality of heads and tails were detained mutually has detachable position limiting plate in the chain link middle part, and two regions about position limiting plate separates the chain link into, makes the last chain link of this chain link move about in last region, and the next chain link of this chain link moves about in lower region. Thereby can prevent that rings in use chain ring from taking place the condition of displacement, the utility model discloses still easily make and convenient follow-up maintenance to the chain ring.

Description

Hoisting ring hoisting chain

Technical Field

The utility model relates to a rings lifting chain belongs to hoist technical field.

Background

Heavy slings are often used in the metallurgical industry, primarily for lifting large equipment or objects. As shown in fig. 1, the links of the lifting rings are normally used, but the links are often displaced during use, as shown in fig. 2, especially when multiple groups of heavy lifting rings are used simultaneously, if the links are displaced during use, the lifted object is seriously unbalanced, which may cause serious accidents, and if the links are manually straightened, fingers may be injured.

Patent document CN206329676U discloses a reinforcement welding seam type displacement-proof hoist chain, which comprises chain links fastened end to end, and a first fastener and a second fastener welded on the inner sides of two straight edges of the chain links, so as to improve the use strength of the chain links and limit the displacement of the upper and lower chain links in the middle chain link. The utility model discloses a simple structure, but the manufacturing approach at the inboard welded fastener of two straight flanges of chain link is comparatively complicated, and manufacturing efficiency is lower moreover to inconvenient subsequent maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: an eye lifting chain is provided which prevents displacement of the chain links during use and which is easy to manufacture and maintain.

For solving the technical problem the utility model discloses the technical scheme who adopts is: the hoisting ring chain includes several chain rings in the middle part and separated into two upper and lower areas, so that the upper chain ring moves in the upper area and the lower chain ring moves in the lower area. Thereby can prevent the utility model discloses the condition that the chain ring takes place the displacement appears in the in-service use.

The position limiting plate is fastened on the chain ring in a detachable mode, and the position limiting plate can be detached for replacement after the chain ring is damaged, or the position limiting plate is replaced on a new chain for use, so that the chain ring is convenient to machine, manufacture and maintain.

The utility model discloses a position restriction board includes metal sheet and fastener, and the metal sheet is installed respectively at the front and the back of chain link, and the metal sheet at the front and the back of fastener connecting chain link, make the chain link be pressed from both sides between the metal sheet, and the fastener is near the inner ring at the chain link to increase the fastening degree of metal sheet and chain link, when avoiding in use to run into the condition such as collision, vibrations or impact, the position of position restriction board takes place to remove, thereby improve reliability and the security of in use.

Drawings

FIG. 1 is a schematic view of a prior art link of a lifting ring in normal use;

FIG. 2 is a schematic view of a prior art construction of a lifting ring with a displaced link;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a schematic structural view of a second embodiment of the middle link according to the present invention;

FIG. 5 is a schematic structural view of a third embodiment of the middle link according to the present invention;

the labels in the figure are: 1-position limiting plate, 2-fastener, 3-metal plate, 4-chain ring.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

As shown in fig. 3, the present invention comprises a plurality of links 4 fastened end to end, a detachable position limiting plate 1 is provided in the middle of the link 4, the position limiting plate 1 separates the link 4 into an upper region and a lower region, so that the previous link of the link 4 moves in the upper region and the next link of the link 4 moves in the lower region. In the present invention, the position restricting plate 1 may be directly connected to the chain ring 4, or may be connected to the chain ring 4 via other parts. To facilitate the removal of the position restricting plate 1, the following preferable modes may be adopted: sleeving a U-shaped plate at the middle part of a chain ring 4, wherein the width between the straight edges at two sides of the U-shaped plate is matched with the thickness of the chain ring 4, the length of the two straight edges of the U-shaped plate is matched with the maximum dimension of the chain ring 4 in the width direction, sleeving the U-shaped plate at the middle part of the chain ring 4, and the height dimension of the U-shaped plate is determined according to the dimension of the chain ring 4, so long as the upper and lower areas formed between the chain ring 4 and the U-shaped plate can enable the upper chain ring and the lower chain ring of the chain ring 4 to move freely, then opening 4 through holes on the plates where the straight edges at two sides of the U-shaped plate are located, opening a groove penetrating through the thickness of the U-shaped plate at the middle position of a connecting plate of the plates where the straight edges at two sides of the U-shaped plate are located, welding a fastener at, when the U-shaped plate is sleeved on the chain ring 4, the fastener welded on the chain ring 4 penetrates through the groove on the U-shaped plate, the U-shaped plate and the chain ring are fastened together by 4 bolts, the positions of the 4 bolts are close to the inner ring of the chain ring 4, the thickness of the U-shaped plate is generally 5mm-10mm, the thickness of the U-shaped plate is changed according to the size of the chain ring 4, and the smaller the size of the chain ring 4, the thinner the thickness of the U-shaped plate.

In the present invention, the position restricting plate 1 may further be composed of a metal plate 3 and a fastener 2, the metal plate 3 being respectively installed on the front and back of the chain ring 4, and the fastener 2 being used to connect the metal plates 3 on the front and back of the chain ring 4, so that the chain ring 4 is sandwiched between the metal plates 3. As shown in fig. 4, when the chain ring 4 is composed of two straight edges and two circular arc segments, the present invention can adopt the following preferred modes: the method comprises the following steps that 2 rectangular steel plates 3 are fastened on a chain ring 4 through 4 bolts 2, the width dimension of each rectangular steel plate 3 is matched with the outer side dimensions of two straight sides of the chain ring 4, the length dimension of each rectangular steel plate 3 is matched with the dimensions of the straight side sections of the chain ring 4, the thickness of each rectangular steel plate 3 is generally 5-10 mm, the thickness of each rectangular steel plate 3 is changed according to the dimension of the chain ring 4, and the smaller the dimension of the chain ring 4, the thinner the thickness of each rectangular steel plate 3 is. The rectangular steel plates 3 are respectively arranged on the front surface and the back surface of the chain ring 4, the chain ring 4 is clamped between the two rectangular steel plates 3, two long sides of the rectangular steel plates 3 are respectively superposed with the outer sides of two straight edges of the chain ring 4, the rectangular steel plates 3 are symmetrically distributed in the center of the chain ring 4 in the length direction, 4 holes are respectively formed in the two rectangular steel plates 3 and are closely attached to an inner ring of the chain ring 4, the size of each hole is the nominal diameter of each bolt 2, the size of each bolt 2 is determined according to the size and the model of the chain ring 4, the larger the size of the chain ring 4 is, the larger the size of each bolt 2 is generally selected to be more than 12mm, 4 bolts 2 pass through the holes in the rectangular steel plates 3, penetrate through the two rectangular steel plates 3 and are locked by nuts on the other sides of the rectangular steel plates 3, so that the rectangular steel, the previous one of the links 4 is made to move only in the upper zone and the next one of the links 4 is made to move only in the lower zone.

As shown in fig. 5, when the chain ring 4 is formed by two arc segments directly connected, the present invention can adopt the following preferred modes: the method is characterized in that 4 screws 2 are used for fastening 2 iron plates 3 with arcs at two ends on a chain ring 4, the maximum size of the arc sections at two ends of the iron plates 3 is matched with the maximum size of the chain ring 4 in the width direction, the arc sections of the iron plates 3 are matched with the arc section at the middle part of the chain ring 4, the length size of the iron plates 3 is determined according to the size of the chain ring 4, as long as the upper area and the lower area formed between the chain ring 4 and the iron plates 3 can enable the upper chain ring and the lower chain ring of the chain ring 4 to move freely, the larger the size of the chain ring 4 is, the larger the size of the iron plates 3 in the length direction is, the thickness of the iron plates 3 is generally 5mm-10mm, the thickness of the iron plates 3 is changed according to the size. The iron plates 3 are respectively arranged on the front surface and the back surface of the chain ring 4, so that the chain ring 4 is clamped between the two iron plates 3, the arcs at the two ends of the iron plates 3 are respectively matched with the arcs at the two ends of the

chain ring

4, 4 holes are respectively arranged on 2 iron plates 3, one of the iron plates is provided with 4 through holes, the other iron plate is provided with 4 threaded holes, the holes are tightly abutted against the inner ring of the chain ring 4, the size of each hole is the nominal diameter of each screw 2, the size of each screw 2 is determined according to the size of the chain ring 4, the larger the size of the chain ring 4 is, the larger the size of each screw 2 is, the generally selected diameter is more than 12mm, 4 screws 2 pass through the iron plates 3 with the through holes and are screwed on the other iron plate 3 with the threaded holes, so that the iron plates 3 are fastened on the chain ring 4, an upper area and a lower area are formed between the arc section of the chain, the next link of the links 4 is only active in the lower zone.

Of course, the utility model discloses a rectangular copper plate can also be selected to metal sheet 3, and fastener 2 also can adopt stud's and the combination of nut. The width dimension of the rectangular copper plate is matched with the maximum dimension of the chain ring 4 in the width direction, the thickness of the rectangular copper plate is generally 5mm-10mm, the thickness of the rectangular copper plate is changed according to the dimension of the chain ring 4, the smaller the dimension of the chain ring 4 is, the thinner the thickness of the rectangular copper plate is, the length dimension of the rectangular copper plate is determined according to the dimension of the chain ring 4, as long as the upper and lower two areas formed between the chain ring 4 and the rectangular copper plate are ensured to enable the upper chain ring and the lower chain ring of the chain ring 4 to move freely, the larger the dimension of the rectangular copper plate in the length direction is, the larger the dimension of the chain ring 4 is, the rectangular copper plates are respectively arranged on the front surface and the back surface of the chain ring 4, the chain ring 4 is clamped between the two rectangular copper plates, the rectangular copper plate is positioned at the middle part of, the holes are abutted against the inner ring of the chain ring 4, the size of each hole is the nominal diameter of the stud, the size of each stud is determined according to the size and the model of the chain ring 4, the larger the size of the chain ring 4 is, the larger the size of the stud is, the generally selected diameter is more than 12mm, 4 studs penetrate through the holes in two rectangular copper plates, and are respectively locked at two ends of the stud by nuts, so that the rectangular copper plates are fastened on the chain ring 4, the rectangular copper plates form an upper area and a lower area in the chain ring 4 and an arc section of the chain ring 4, the upper chain ring of the chain ring 4 only moves in the upper area, and the lower chain ring of the chain ring 4 only moves in the lower area.

Claims

1. Rings lifting chain, link (4) including a plurality of end to end looks buckles, its characterized in that: the middle part of the chain ring (4) is provided with a detachable position limiting plate (1), the chain ring (4) is divided into an upper area and a lower area by the position limiting plate (1), the upper chain ring of the chain ring (4) moves in the upper area, and the lower chain ring of the chain ring (4) moves in the lower area.

2. The eye hoist chain of claim 1, wherein: the position restricting plate (1) includes metal plates (3) and fasteners (2), the metal plates (3) are respectively installed on the front and back surfaces of the chain ring (4), and the metal plates (3) on the front and back surfaces of the chain ring (4) are connected by the fasteners (2) so that the chain ring (4) is sandwiched between the metal plates (3).

3. The eye hoist chain of claim 2, wherein: the fastener (2) is composed of a bolt and a nut.

4. The eye hoist chain of claim 2, wherein: the fastener (2) is composed of a stud and a nut.

5. The eye hoist chain of claim 2, wherein: the fastener (2) is a screw.

6. The eye hoist chain of any one of claims 2 to 5, wherein: the fastener (2) abuts against the inner ring of the chain ring (4).

7. The eye hoist chain of any one of claims 2 to 5, wherein: the metal plate (3) is a steel plate.