Connecting mechanism of slag salvaging rake

Abstract

The utility model discloses a connecting mechanism of a slag salvaging rake. The slag rake is provided with a rear end plate, and the rotating shaft is used for driving the slag rake to rotate. A longitudinal shaft hole is formed in the lower end part of the rotating shaft, the upper end part of a slag rake shaft in a circular shaft form is mounted in the longitudinal shaft hole, and the lower end part of the slag rake shaft is fixedly connected with the rear end plate; the rotating shaft is further provided with a transverse pin hole penetrating through the longitudinal shaft hole, and a connecting pin is installed in the transverse pin hole and further penetrates through the slag rake shaft. The slag rake shaft is designed to be the circular shaft or the circular truncated cone shaft, so that the manufacturing cost and the machining difficulty of parts are further reduced, and the assembly efficiency of the connecting mechanism is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of slag removal from the surface of molten iron and steel. It relates to a connecting mechanism for a slag rake. Background Technology

[0002] Rotary slag removal from molten iron and steel is a relatively new technology that has emerged in the last decade or so. The slag rake used in rotary slag removal is a consumable part and requires frequent replacement. Furthermore, due to the continuous and fast-paced nature of steel production, the disassembly and connection of the slag rake to the rotary shaft of the slag remover must be rapid to avoid delaying normal slag removal operations.

[0003] Chinese utility model patent CN209502962U discloses a slag-removing mechanism, in which a connecting shaft is provided on the top of the slag rake for connecting the rotating shaft and the slag rake. The cross-sectional shape of the connecting shaft is polygonal. Although the torque borne by the slag rake can be borne through the polygonal shaft hole, in actual manufacturing, it has been found that this polygonal connecting shaft has problems such as difficult production and processing, high manufacturing cost, and slow installation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a connecting mechanism for a slag rake. First, by further optimizing the connection method between the slag rake shaft and the rotary shaft of the slag remover, the defects of difficult processing, high manufacturing cost and slow installation of polygonal connecting shafts are overcome. Second, the load-bearing capacity and reliability of the connecting mechanism are further improved.

[0005] The technical solution of this utility model is as follows:

[0006] A connecting mechanism for a slag rake includes a slag rake with a rear end plate and a rotating shaft for driving the slag rake to rotate. The lower end of the rotating shaft has a longitudinal shaft hole, and the upper end of the slag rake shaft in the form of a round shaft is installed in the longitudinal shaft hole. The lower end of the slag rake shaft is fixedly connected to the rear end plate. The rotating shaft also has a transverse pin hole that passes through the longitudinal shaft hole, and a connecting pin is installed in the transverse pin hole. The connecting pin also passes through the slag rake shaft.

[0007] The slag rake shaft is preferably cylindrical or a frustum shape with the upper end face dimension smaller than the lower end face dimension.

[0008] Preferably, keyways are provided on the wall of the longitudinal shaft hole and the side wall of the slag rake shaft, and a flat key is installed in the keyway.

[0009] Preferably, the lower end of the slag rake shaft has a vertically oriented insertion interface, and the rear end plate is connected to the insertion interface.

[0010] The beneficial effects of this utility model are as follows:

[0011] First, by designing the slag rake shaft as cylindrical or frustum-shaped, this utility model further reduces the manufacturing cost and processing difficulty of the components, and improves the assembly efficiency of the connecting mechanism.

[0012] Secondly, in the optimized technical solution of this utility model, a flat key is added to limit the relative rotation between the rotary shaft and the slag rake shaft, which further ensures the synchronous rotation of the rotary shaft and the slag rake shaft, improves the load-bearing capacity and reliability of the connecting mechanism, prevents the connecting pin from being subjected to excessive shear force, and reduces the wear between components and transmission noise.

[0013] Third, in the optimized technical solution of this utility model, a more robust and reliable connection between the slag rake shaft and the rear end plate is achieved through the "shaft-wrapped plate" method. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Explanation of reference numerals in the attached diagram: 1. Slag rake; 1-1. Rear end plate; 2. Slag rake shaft; 3. Rotary shaft; 4. Flat key; 5. Connecting pin. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0017] like Figure 1 An embodiment of the slag rake connecting mechanism of this utility model includes a slag rake 1 with a rear end plate 1-1. It also includes a rotating shaft 3 for driving the slag rake 1 to rotate, and a slag rake shaft 2 is connected between the rear end plate 1-1 and the rotating shaft 3. Specifically, the lower end of the rotating shaft 3 has a longitudinal shaft hole, and the upper end of the slag rake shaft 2 is installed in the longitudinal shaft hole. The rotating shaft 3 also has a transverse pin hole penetrating the longitudinal shaft hole, and a connecting pin 5 is installed in the transverse pin hole. The connecting pin 5 also penetrates the slag rake shaft 2.

[0018] The slag rake shaft 2 is a round shaft. Further, the slag rake shaft 2 can be cylindrical or a frustum shape with an upper surface dimension smaller than the lower surface dimension. The advantage of a frustum shape is that assembly is more convenient.

[0019] To further ensure that the rotary shaft 3 and the slag rake shaft 2 rotate synchronously, improve the reliability of the connection mechanism, and reduce the wear and transmission noise between components, keyways are provided on the wall of the longitudinal shaft hole and the side wall of the slag rake shaft 2, respectively. A flat key 4 is installed in the keyway to more reliably limit the relative rotation between the rotary shaft 3 and the slag rake shaft 2.

[0020] To further achieve a more robust and reliable connection between the rake shaft 2 and the rear end plate 1-1, a vertically oriented insertion interface is provided at the lower end of the rake shaft 2, into which the rear end plate 1-1 is inserted from below. After insertion, the rake shaft 2 and the rear end plate 1-1 can be fixed by bolt connection, or other fixing methods can be used, such as tight fit or welding.

[0021] After inserting the connecting pin 5 into the transverse pin hole, the exposed end of the connecting pin 5 needs to be locked to prevent lateral movement. The locking method is a conventional technique, and only one example is given here. Figure 1 The exposed left end of the connecting pin 5 has a connecting pin head with a radial dimension larger than that of the transverse pin hole, and the exposed right end is equipped with a limit lock pin. Figure 1 (The limit lock stop pin has been omitted).

Claims

1. A connecting mechanism for a slag rake, comprising a slag rake (1) having a rear end plate (1-1) and a rotating shaft (3) for driving the slag rake (1) to rotate, characterized in that: The lower end of the rotary shaft (3) is provided with a longitudinal shaft hole, and the upper end of the round shaft-shaped slag rake shaft (2) is installed in the longitudinal shaft hole. The lower end of the slag rake shaft (2) is fixedly connected to the rear end plate (1-1). The rotary shaft (3) is also provided with a transverse pin hole that passes through the longitudinal shaft hole and a connecting pin (5) is installed in the transverse pin hole. The connecting pin (5) also passes through the slag rake shaft (2).

2. The connecting mechanism of the slag-removing rake as described in claim 1, characterized in that: The slag rake shaft (2) is cylindrical or a frustum shape with the upper end face size smaller than the lower end face size.

3. The connecting mechanism of the slag rake as described in claim 1 or 2, characterized in that: Keyways are provided on the wall of the longitudinal shaft hole and the side wall of the slag rake shaft (2), and a flat key (4) is installed in the keyway.

4. The connecting mechanism of the slag rake as described in claim 1 or 2, characterized in that: The lower end of the slag rake shaft (2) is provided with a vertically oriented insertion interface, and the rear end plate (1-1) is connected to the insertion interface.

5. The connecting mechanism of the slag-removing rake as described in claim 3, characterized in that: The lower end of the slag rake shaft (2) is provided with a vertically oriented insertion interface, and the rear end plate (1-1) is connected to the insertion interface.

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