CN201272814Y - Connecting mechanism of elevation bearing ring - Google Patents

Abstract

The utility model belongs to the technical field of mechanical engineering and discloses a connection mechanism for a lifting bearing ring. It is mainly composed of a lifting bearing ring, a synchronous lifting piece, an elastic rod and a connecting member. The synchronous lifting piece is connected to the outer ring of the lifting bearing ring through the elastic rod and the connecting member, and the bridge connects the pull rod to the inner ring of the lifting bearing ring. . The principle of this technology is reasonable. On the basis of minor changes to the original material distribution device lifting bearing ring connection mechanism, the stress condition of the entire material distribution device transmission system is greatly improved, the safety and reliability of the transmission system are improved, and the equipment is reduced. The impact during the running process can prolong the life of the equipment, and it can be popularized and used on the multi-point lifting lifting ring type material distribution device.

Description

A connection mechanism for a lifting bearing ring

technical field

The utility model belongs to the technical field of mechanical engineering and discloses a connection mechanism for a lifting bearing ring, in particular to a connection mechanism for a lifting bearing ring in a blast furnace material distribution device.

Background technique

The distribution device is an important core equipment in the blast furnace ironmaking process equipment, among which the distribution device represented by the lifting bearing ring is a transmission form developed in China. In the traditional rigid synchronous lifting mechanism of the lifting bearing ring, some mechanisms use a multi-point lifting synchronous lifting mechanism (usually 3 or 4 points). Theoretically, 3 points of lifting are the ideal lifting point settings, which makes the lifting bearing The ring constitutes a free static state of three points and one side. However, in actual use, considering the load distribution, transmission system and layout of the lifting rod, the design of four lifting points is more commonly used. The traditional lifting bearing ring is lifted at multiple points. In the mechanism, the synchronous lifting part is directly connected to the lifting bearing ring. When four or more rigid synchronous lifting is used, the problem of over-constraint on the lifting bearing ring will occur. This over-constraint phenomenon will occur during the operation of the material distribution device. Jamming phenomenon occurs, and in severe cases, the lifting movement of the mechanism is stuck; at the same time, the over-constraint increases the force change in each lifting rod, and even produces a negative value.

Contents of the invention

The purpose of the utility model is to provide a multi-point lifting lifting bearing ring connection mechanism. The device is mainly composed of a lifting bearing ring, a synchronous lifting piece, an elastic rod and a connecting member. The synchronous lifting piece is connected to the outer ring of the lifting bearing ring through the elastic rod and the connecting member. Circle on.

The elastic bridge and the lifting rod are used to realize the rigid synchronous lifting of the lifting bearing ring and solve the over-constraint problem of multi-point lifting. The principle is to use the lower stiffness or greater flexibility (compared to the lifting bearing ring body) of the elastic rod or plate to solve the deformation coordination of the lifting bearing ring during the four-point lifting, so that the main deformation of the system is caused by the The lifting bearing ring is changed on the elastic rod. Since the stiffness of the elastic rod is many times lower than that of the lifting bearing ring, the deformation of the lifting bearing ring is much smaller than that of the elastic rod. Such a mechanism can eliminate the load of the rods in the four-point tie rod, and at the same time make the force in each rod more balanced under the asymmetrical alternating external load, and the elastic rod itself can also absorb the impact load. After using this mechanism The force condition of the entire transmission system of the material distribution device is greatly improved and balanced, and the mechanism under the over-constrained connection realizes the effect of approximate static support. The above advantages are also verified by finite element analysis.

For the elastic rod, its shape is various, the most common is cylindrical, rectangular or multi-layer plate (made into a leaf spring shape), as long as it meets the relatively small rigidity relative to the lifting bearing ring, there is relatively large deformation. Generally speaking, under the condition of satisfying the strength, the performance of the leaf spring elastic member with lower stiffness is better.

This mechanism is mainly used in the lifting bearing ring lifting mechanism of four suspension points, but it can also be extended to other lifting bearing ring lifting mechanisms of multi-point suspension.

The principle of the utility model is reasonable, and on the basis of minor changes to the connection mechanism of the lifting bearing ring of the original distributing device, the stress condition of the transmission system of the entire distributing device is greatly improved, the safety and reliability of the transmission system are improved, and the The impact during the operation of the equipment can prolong the life of the equipment, and can be popularized and used on the multi-point lifting lifting ring type material distribution device.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model cylindrical beam;

Fig. 2 is a schematic diagram of the three-dimensional structure of the plate beam of the present invention.

In the figure, piece 1 is a lifting bearing ring, piece 2 is a synchronous lifting piece, piece 3 is an elastic rod, piece 4 is a connecting member, piece 5 is a tie rod, and piece 6 is a tie rod bridge.

Detailed ways

The specific embodiment of the utility model is further described below in conjunction with accompanying drawing:

The synchronous lifting member 2 is connected to the elastic rod 3, and the connecting member 4 is connected to the outer ring of the lifting bearing ring 1. Each elastic rod 3 is connected to two connecting members 4 to form a bridge structure. The tie rod 5 passes through the tie rod bridge 6 Connected to the inner ring of the lifting bearing ring 1.

The elastic rod 3 in Fig. 1 is a cylindrical beam, and the elastic rod 3 in Fig. 2 is a plate beam.

Since the inner ring and the outer ring of the lifting bearing ring 1 can rotate relatively, the synchronous lifting member 2 and the pull rod 6 can also rotate relatively and rise and fall synchronously.

This mechanism is very necessary for the number of synchronous lifting members 2 to be four or more. Since the external load is applied to the pull rod 5, the load is eccentric and rotates. In theory, if there is no transition connection of the elastic rod 3, the rigidity The connection and the rigid synchronous mechanism will cause an upturned deformation trend at the connection point of the fourth synchronous lifting member 2 farthest from the pull rod 5 on the lifting bearing ring 1, which will cause an upward deformation trend between the lifting bearing ring 1 and the four synchronous lifting components 2. Internal over-constraints and over-constrained additional loads result in uneven load distribution in each synchronous lifting member 2 , and the equipment is prone to jamming. After the synchronous lifting part 2 is connected in a bridge way through the elastic rod part 3, since the stiffness of the elastic rod part 3 is much lower than that of the lifting bearing ring 1, the deformation of the elastic rod part 3 is much larger than that of the lifting bearing ring 1, which can make the lifting bearing ring 1 is covered up by force and deformation, so that the over-constrained connection mechanism realizes the effect of approximate static support, and the relative rotation of the inner and outer rings of the lifting bearing ring 1 realizes the relative rotation and synchronous lifting of the lifting member 2 and the pull rod 5 Function.

This mechanism is mainly used in the lifting bearing ring lifting mechanism of four suspension points, but it can also be extended to other lifting bearing ring lifting mechanisms of multi-point suspension.

The principle of the utility model is reasonable, and on the basis of minor changes to the connection mechanism of the lifting bearing ring of the original distributing device, the stress condition of the transmission system of the entire distributing device is greatly improved, the safety and reliability of the transmission system are improved, and the The impact during the operation of the equipment can prolong the life of the equipment, and can be popularized and used on the multi-point lifting lifting ring type material distribution device.

Claims (3)

1. the connection mechanism of a lifting bearing ring, mainly form by lifting bearing ring (1), synchronous lifting member (2), elastic bar (3) and coupling member (4), it is characterized in that: lifting member (2) is connected on the outer shroud of lifting bearing ring (1) by elastic bar (3) and coupling member (4) synchronously, and pull bar (5) is connected on the interior ring of lifting bearing ring (1) by crane span structure (6).

2. the connection mechanism of lifting bearing ring according to claim 1, it is characterized in that: elastic bar (3) is the cylinder beam.

3. the elastic bridge connection mechanism of lifting bearing ring according to claim 1, it is characterized in that: elastic bar (3) is tabular beam.

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