CN110665978A

CN110665978A - Loop lifting device

Info

Publication number: CN110665978A
Application number: CN201910853554.9A
Authority: CN
Inventors: 杨亚辉; 赵子祥; 陆文韬; 唐剑; 黎朝晖; 黄柳荣
Original assignee: Liuzhou Iron and Steel Co Ltd
Current assignee: Liuzhou Iron and Steel Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-01-10

Abstract

A loop lifting device, a cylinder is hinged with a loop bracket, and the moving end of the cylinder is hinged with a triangular connecting rod; the triangular connecting rod is formed by welding a second connecting rod, a third connecting rod and a fourth connecting rod on a shaft, wherein the second connecting rod and the third connecting rod are positioned in the same direction and are in a parallel state, the fourth connecting rod, the second connecting rod and the third connecting rod are distributed in a triangular shape, the shaft is connected to the loop support through a bearing, the fourth connecting rod is hinged to the moving end of the cylinder, the second connecting rod and the third connecting rod are respectively hinged to one ends of the first connecting rod and the fifth connecting rod, and the other ends of the first connecting rod and the fifth connecting rod are hinged to the loop roller support, so that the linear reciprocating motion of the cylinder drives the loop roller support to ascend or descend through the transmission of the triangular connecting rod. The multi-connecting-rod type air cylinder has the advantages that the mounting position of the air cylinder is changed, the efficiency of manual replacement of spare parts is improved, the field operation is facilitated, certain bearing performance and stability are improved due to the use of the multi-connecting-rod type air cylinder, the existing blank and the air cylinder can be used for transformation, the transformation cost is low, and the transformation cost of the spare parts is low.

Description

Loop lifting device

Technical Field

The invention relates to the technical field of metallurgical manufacturing, in particular to a loop lifting device.

Background

The loop used on the rolling line of the rolled steel bar mainly eliminates the pulling force in the rolling process so as to realize the tension-free rolling, reduce the size deviation of the head and the tail of the steel and improve the precision of the product and the stability of the process. The cylinder of traditional looper mainly all installs on the bottom support of looper, and the cylinder connects direct and plays set roller support and link to each other, through the flexible size of directly controlling set wheel lifting height of cylinder. However, the installation form is inconvenient to disassemble and assemble, the efficiency of manually replacing spare parts is low due to the narrow field operation environment, the cylinder is directly connected with the sleeve lifting frame and is stressed greatly, the fatigue degree of the cylinder can be enhanced to a certain extent, and the stability is relatively low, so that the installation position of the cylinder is urgently required to be adjusted.

Disclosure of Invention

The invention aims to provide the loop lifting device which realizes tension-free rolling, improves the precision of products and the stability of the process, has simple structural design, lower input cost and convenient maintenance and can realize the required functional requirements.

The solution of the invention is such that:

in order to solve the problems that the cylinder in the bar looping equipment is inconvenient to disassemble and assemble, the efficiency of manually replacing spare parts is low and the like, the installation position of the cylinder needs to be considered, the practicability of the device needs to be considered, the investment cost is low, and the bar looping equipment is suitable for being popularized and used. The scheme of adopting a connecting rod mechanism is considered, the cylinder is used as a power source, and the connecting rod drives the sleeve lifting support to move up and down. The cylinder can drive the triangular connecting rod to rotate around the square seat bearing through telescopic control, and the triangular connecting rod can drive the connecting rod to move so as to drive the sleeve lifting support to move up and down, so that tension-free rolling is realized.

Based on the basic technical scheme, the specific technical scheme of the invention is as follows:

a loop lifting device comprises a loop lifting wheel, a loop lifting roller support and a cylinder, wherein the cylinder is hinged with a loop support, and the moving end of the cylinder is hinged with a triangular connecting rod; the triangular connecting rod is formed by welding a second connecting rod, a third connecting rod and a fourth connecting rod on a shaft, wherein the second connecting rod and the third connecting rod are positioned in the same direction and are in a parallel state, the fourth connecting rod, the second connecting rod and the third connecting rod are distributed in a triangular shape, the shaft is connected to the loop support through a bearing, the fourth connecting rod is hinged to the moving end of the cylinder, the second connecting rod and the third connecting rod are respectively hinged to one ends of the first connecting rod and the fifth connecting rod, and the other ends of the first connecting rod and the fifth connecting rod are hinged to the loop roller support, so that the linear reciprocating motion of the cylinder drives the loop roller support to ascend or descend through the transmission of the triangular connecting rod.

The more specific technical scheme also comprises the following steps: the lower end of the sleeve lifting roller support is provided with a limiting bolt, the threaded end of the limiting bolt is over against the bottom of the loop support, and the position of the sleeve lifting roller support is adjusted by adjusting the extending height of the limiting bolt.

Further: the loop support comprises a transverse supporting part and pillars arranged at intervals, the pillars arranged at intervals are positioned below the sleeve lifting roller support, U-shaped plates are connected between the pillars arranged at intervals, the bearings are fixed on the U-shaped plates, and the shaft penetrates through the U-shaped grooves of the U-shaped plates to be connected with the bearings; the cylinder is obliquely arranged outside the two supporting columns.

Further: the length of the triangular connecting rod for welding the second connecting rod, the third connecting rod and the fourth connecting rod is shorter than that of the first connecting rod and the fifth connecting rod.

The invention has the advantages that:

1. the existing blank and the air cylinder are used for modification, the modification cost is low, and the modification spare part cost is low;

2. the mounting position of the air cylinder is changed, so that the efficiency of manually replacing spare parts is improved, and the field operation is facilitated;

3. through the use of the multi-connecting-rod form, the bearing performance and stability are improved to a certain extent.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the whole structure of the embodiment of the invention viewed from the bottom upwards.

Fig. 3 is a schematic view of the connecting structure of the pullout roller support 2 and the cylinder 3 of the present invention when the cylinder is extended.

Fig. 4 is a schematic view of the structure of fig. 3 with the cylinder retracted.

Fig. 5 is a schematic view of the structure of the rising-side set-up roller holder 2 shown in fig. 1.

Fig. 6 is a schematic view of the structure of the pullout roll support 2 shown in fig. 1 after it is lowered.

The parts of the drawings are detailed as follows: the device comprises a sleeve lifting wheel 1, a sleeve lifting roller support 2, an air cylinder 3, a U-shaped plate 4, a bearing 5, a triangular connecting rod 6, a first connecting rod 7, a first fixed hinged support 8, a second fixed hinged support 9, a limiting bolt 10, a second connecting rod 11, a third connecting rod 12, a fourth connecting rod 13, a reinforcing rib 14, a shaft 15, a third fixed hinged support 16, a fifth connecting rod 17, an air cylinder connector 18 and a loop support 19.

Detailed Description

As shown in fig. 1, 2 and 3, the invention comprises a sleeve lifting wheel 1, a sleeve lifting roller support 2 and a cylinder 3, wherein the cylinder 3 is hinged with a loop bracket 19, and a cylinder joint 18 at the moving end of the cylinder is hinged with a triangular connecting rod 6; the triangular connecting rod 6 is formed by welding a second connecting rod 11, a third connecting rod 12 and a fourth connecting rod 13 on a shaft 15, wherein the second connecting rod 11 and the third connecting rod 12 are positioned in the same direction and are in a parallel state, reinforcing ribs 14 are respectively welded between the second connecting rod 11, the third connecting rod 12, the fourth connecting rod 13 and the shaft 15 so as to improve the bearing strength, the fourth connecting rod 13, the second connecting rod 11 and the third connecting rod 12 are distributed in a triangular shape, the shaft 15 is connected to a U-shaped plate 4 at the lower part of a loop support 19 through a bearing 5, the bearing 5 adopts a square bearing, the fourth connecting rod 13 is hinged with the moving end of the cylinder 3, the second connecting rod 11 and the third connecting rod 12 are respectively hinged with one end of a first connecting rod 7 and one end of a fifth connecting rod 17, the other ends of the first connecting rod 7 and the fifth connecting rod 17 are respectively hinged with a sleeve roller support 2 through a second hinged support 9 and a third hinged support 16, so that the linear reciprocating motion of, driving the sleeve lifting roller support 2 to ascend or descend; the length of the triangular connecting rod 6 welded with the second connecting rod 11, the third connecting rod 12 and the fourth connecting rod 13 is shorter than that of the first connecting rod 7 and the fifth connecting rod 17, so that the singularity of the mechanism is avoided, and the equipment failure is caused.

The lower end of the sleeve lifting roller support 2 is provided with a limiting bolt 10, the threaded end of the limiting bolt 10 is right opposite to the bottom of the loop support 19, and the sleeve lifting roller support 2 is limited by adjusting the extending height of the limiting bolt 10.

The loop support 19 comprises a transverse supporting part and pillars arranged at intervals, the pillars arranged at intervals are positioned below the sleeve lifting roller support 2, U-shaped plates 4 are connected between the pillars arranged at intervals, the bearings 5 are fixed on the U-shaped plates 4, and the shaft 15 penetrates through the U-shaped grooves of the U-shaped plates 4 to be connected with the bearings 5; the cylinder 3 is obliquely arranged outside the two pillars, so that the cylinder is arranged externally, and replacement and maintenance are convenient.

The working principle of the invention is as follows:

when the cylinder 3 extends out, the triangular connecting rod 6 is driven to rotate, the triangular connecting rod 6 drives the first connecting rod 7 and the fifth connecting rod 17 to move, the first connecting rod 7 and the fifth connecting rod 17 drive the sleeve lifting roller support 2 to move upwards, and the limiting bolt 10 collides with the bottom of the loop support 19 when the sleeve lifting roller support 2 rises to the limit position to play a limiting role, as shown in fig. 3 and 5. On the contrary, when the cylinder 3 contracts, the triangular connecting rod 6 is driven to rotate, the triangular connecting rod 6 drives the first connecting rod 7 and the fifth connecting rod 17 to move, and the first connecting rod 7 and the fifth connecting rod 17 drive the sleeve lifting roller support 2 to perform descending movement, as shown in fig. 4 and 6. The telescopic length of the cylinder 3 can be flexibly adjusted according to the working condition, and the pulling force in the continuous rolling process is eliminated, so that the tension-free rolling is realized, the size deviation of the head and the tail of the steel is reduced, and the precision of the product and the stability of the process are improved.

Claims

1. The utility model provides a loop hoisting device, includes set wheel (1), set roller support (2), cylinder (3), its characterized in that: the cylinder (3) is hinged with a loop support (19), and the moving end of the cylinder is hinged with a triangular connecting rod (6); the triangular connecting rod (6) is formed by welding a second connecting rod (11), a third connecting rod (12) and a fourth connecting rod (13) on a shaft (15), wherein the second connecting rod (11) and the third connecting rod (12) are positioned in the same direction and are in a parallel state, the fourth connecting rod (13) is in triangular distribution with the second connecting rod (11) and the third connecting rod (12), the shaft (15) is connected with the loop support (19) through the bearing (5), the fourth connecting rod (13) is hinged with the moving end of the cylinder (3), the second connecting rod (11) and the third connecting rod (12) are respectively hinged with one ends of the first connecting rod (7) and the fifth connecting rod (17), the other ends of the first connecting rod (7) and the fifth connecting rod (17) are hinged with the sleeve roller support (2) to ensure that the cylinder (3) linearly reciprocates, the sleeve lifting roller support (2) is driven to ascend or descend by the transmission of the triangular connecting rod (6).

2. The loop lifting device according to claim 1, wherein: the lower end of the sleeve lifting roller support (2) is provided with a limiting bolt (10), the threaded end of the limiting bolt (10) is right opposite to the bottom of the loop support (19), and the position of the sleeve lifting roller support (2) is adjusted by adjusting the extending height of the limiting bolt (10).

3. The loop lifting device according to claim 1, wherein: the loop support (19) comprises transverse supporting parts and pillars arranged at intervals, the pillars arranged at intervals are positioned below the sleeve lifting roller support (2), U-shaped plates (4) are connected between the pillars arranged at intervals, the bearings (5) are fixed on the U-shaped plates (4), and the shaft (15) penetrates through the U-shaped grooves of the U-shaped plates (4) to be connected with the bearings (5); the cylinder (3) is obliquely arranged outside the two struts.

4. The loop lifting device according to claim 1, wherein: the length of the triangular connecting rod (6) welded with the second connecting rod (11), the third connecting rod (12) and the fourth connecting rod (13) is shorter than that of the first connecting rod (7) and the fifth connecting rod (17).