Novel pinch roll rotating arm of continuous casting machine

Abstract

The utility model discloses a novel pinch roll rotating arm of a continuous casting machine, belongs to the technical field of steelmaking and continuous casting, and solves the problems that manpower, material resources and time are greatly consumed and the production efficiency is influenced in the process of replacing a pull rod of the pinch roll arm of the continuous casting machine. The pinch roll rotating arm of the continuous casting machine comprises two supporting arms, a connecting plate is arranged between the two supporting arms, a lower pressing plate is arranged at one end of each supporting arm, a semicircular hole is formed in the middle of each lower pressing plate, an upper pressing plate is movably arranged at the top of each lower pressing plate, and the upper pressing plate is movably connected with the semicircular hole. An arc-shaped groove is formed in the middle of the upper pressing plate, the circle center of the arc-shaped groove is located below the bottom face of the upper pressing plate, symmetrical bolt holes are formed in the two ends of the upper pressing plate and the two ends of the lower pressing plate, bolts matched with the bolt holes are arranged in the bolt holes, and the bolts sequentially penetrate through the corresponding bolt holes of the upper pressing plate and the lower pressing plate and are in threaded connection with nuts. According to the novel pinch roll rotating arm of the continuous casting machine, the maintenance time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking continuous casting, and more specifically, to a novel pinch roller rotating arm of a continuous casting machine. Background Art

[0002] As a large-scale equipment, the continuous casting machine is composed of various equipment and devices, including tensioning and straightening machines, pinch rollers, vibrating tables, dummy rods, conveyor rollers, steel turning machines, hot delivery rollers, etc. The pinch rollers are also called auxiliary tensioning and straightening devices.

[0003] Since the pinch rollers are in a hot and humid environment, the pinch roller tie rods need to be replaced frequently. After tracking and analyzing the entire tie rod replacement process, it was found that the time to replace a set of tie rod assemblies (i.e., replacing two tie rods) is generally within 5 hours. During the tie rod replacement process, the removal and installation of the ear pins on the two tie rods takes 4 hours. Figure 1 As shown, the main reason is that the rotating arm 1 and the pull rod 2 are both interference fit with the pin 13. During the assembly process, the pin 13 can only be installed by pressing in, and the pin can only be removed by hammering out the pin 13 or cutting the pin 13 with a cutting gun, which greatly consumes manpower, material resources and time, seriously affects the progress of maintenance, and reduces production efficiency. Therefore, it is urgent to develop and design a new type of continuous casting machine pinch roller rotating arm. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a novel pinch roller rotating arm of a continuous casting machine in view of the above-mentioned deficiencies in the prior art, so as to reduce the time for overhaul, ensure the stability of production and improve the production efficiency.

[0005] The technical solution of the utility model is as follows: a new type of continuous casting machine clamping roller rotating arm, including two support arms, a connecting plate is provided between the two support arms, a lower pressing plate is provided at one end of each of the support arms, a semicircular hole is provided in the middle of the lower pressing plate, an upper pressing plate is movably provided on the top of the lower pressing plate, an arc-shaped groove is provided in the middle of the upper pressing plate, and the center of the circle is located below the bottom surface of the upper pressing plate. Both ends of the upper pressing plate and the lower pressing plate are provided with mutually symmetrical bolt holes, and the bolt holes are provided with bolts adapted thereto. The bolts pass through the bolt holes corresponding to the upper pressing plate and the lower pressing plate in turn and are threadedly connected with nuts, and the semicircular holes and the arc-shaped grooves are spliced ​​into a combined hole that can accommodate a pin shaft.

[0006] As a further improvement, the distance between the central axes of the two bolt holes corresponding to the upper pressing plate and the lower pressing plate is 197 mm.

[0007] Furthermore, the diameter of each of the bolt holes is 22 mm.

[0008] Furthermore, the contact surfaces of the upper pressing plate and the lower pressing plate are both provided with grooves.

[0009] Furthermore, the length of the grooves is 130 mm, and the width of the grooves is 24 mm.

[0010] Furthermore, the distance between the center of the arc groove and the bottom surface of the upper pressing plate is 1 mm.

[0011] Furthermore, each of the bolts is threadedly connected with the two nuts.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model provides a new type of continuous casting machine pinch roller rotating arm. Through the opening and closing installation method, there is no need to use a cutting gun to cut the pin shaft during the dismantling process. The dismantling process will not damage the pin shaft, and the pin shaft can also be reused, which effectively reduces the cost. During installation, it is only necessary to tighten the nut to tighten the pin shaft, which greatly shortens the maintenance time, ensures the stability of production, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the prior art;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the upper pressing plate in the utility model;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the upper pressing plate in the utility model;

[0020] Figure 6 It is a structural schematic diagram of the middle support arm and the lower pressing plate of the utility model.

[0021] Among them: 1- rotating arm, 2- pulling rod, 3- supporting arm, 4- connecting rod, 5- upper pressing plate, 6- lower pressing plate, 7- semicircular hole, 8- arc groove, 9- bolt hole, 10- bolt, 11- nut, 12- groove, 13- pin shaft. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0023] See also Figure 2-5 A novel continuous casting machine pinch roller rotating arm comprises two supporting arms 3, a connecting plate 4 is arranged between the two supporting arms 3, a lower pressing plate 6 is arranged at one end of each supporting arm 3, a semicircular hole 7 is arranged in the middle of the lower pressing plate 6, an upper pressing plate 5 is movably arranged on the top of the lower pressing plate 6, an arc groove 8 with a center located below the bottom surface of the upper pressing plate 5 is arranged in the middle of the upper pressing plate 5, and bolt holes 9 are symmetrically arranged at both ends of the upper pressing plate 5 and the lower pressing plate 6, and bolts 10 adapted thereto are arranged in the bolt holes 9, and the bolts 10 pass through the bolt holes 9 corresponding to the upper pressing plate 5 and the lower pressing plate 6 in turn and are threadedly connected with nuts 11, and the semicircular holes 7 and the arc grooves are symmetrically arranged at both ends of the upper pressing plate 5 and the lower pressing plate 6. 8 is spliced ​​into a combination hole that can accommodate the pin shaft 13; the pin shaft 13 is inserted into the combination hole formed by the semicircular hole 7 and the arc groove 8, and then the bolt 10 is passed from top to bottom through the bolt holes 9 corresponding to the upper pressing plate 5 and the lower pressing plate 6, and then the nut 11 is tightened. Through the open and close installation method, there is no need to use a cutting gun to cut the pin shaft during the removal process. The removal process will not damage the pin shaft, and the pin shaft can also be reused, which effectively reduces the cost. During installation, only the nut 11 needs to be tightened to achieve the purpose of tightening the pin shaft 13, which greatly shortens the maintenance time, ensures the stability of production, and improves production efficiency.

[0024] In this embodiment, the distance between the central axes of the two bolt holes 9 corresponding to the upper pressing plate 5 and the lower pressing plate 6 is 197 mm. The two bolt holes 9 on the upper pressing plate 5 and the two bolt holes 9 on the lower pressing plate 6 correspond to each other one by one. In other embodiments, the number of bolt holes 9 on the upper and lower pressing plates can be increased, such as 4, 6, etc., which can effectively prevent the upper pressing plate 5 and the lower pressing plate 6 from loosening.

[0025] In this embodiment, the diameter of each bolt hole 9 is 22 mm.

[0026] In this embodiment, the contact surfaces of the upper pressing plate 5 and the lower pressing plate 6 are both provided with grooves 12, the length of the grooves 12 is 130 mm, the width of the grooves 12 is 24 mm, and the grooves 12 can ensure that the pin shaft 13 can be smoothly inserted during installation, effectively shortening the installation time.

[0027] In this embodiment, the distance between the center of the arc groove 8 and the bottom surface of the upper pressing plate 5 is 1 mm, and the contact plane between the upper pressing plate 5 and the lower pressing plate 6 is cut off by 1 mm, so that after the bolt 10 is tightened, the combined hole formed by the semicircular hole 7 and the arc groove 8 forms a tight fit with the pin shaft 13.

[0028] In this embodiment, each bolt 10 is threadedly connected with two nuts 11, which can effectively prevent the nuts 11 from loosening due to excessive force, thereby causing the pin 13 to loosen. In other embodiments, a spring washer can be added before the nut 11.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A novel continuous casting machine pinch roll rotating arm, comprising two supporting arms (3), characterized in that: A connecting plate (4) is provided between the two support arms (3), and a lower pressing plate (6) is provided at one end of each support arm (3). A semicircular hole (7) is provided in the middle of the lower pressing plate (6). An upper pressing plate (5) is movably provided on the top of the lower pressing plate (6). An arc-shaped groove (8) is provided in the middle of the upper pressing plate (5), the center of which is located below the bottom surface of the upper pressing plate (5). Mutually symmetrical bolt holes (9) are provided at both ends of the upper pressing plate (5) and the lower pressing plate (6). Bolts (10) adapted thereto are provided in the bolt holes (9). The bolts (10) pass through the bolt holes (9) corresponding to the upper pressing plate (5) and the lower pressing plate (6) in sequence and are threadedly connected with nuts (11). The semicircular hole (7) and the arc-shaped groove (8) are spliced ​​into a combined hole capable of accommodating a pin shaft (13).

2. A novel continuous casting machine pinch roller rotating arm according to claim 1, characterized in that: The distance between the central axes of the two bolt holes (9) corresponding to the upper pressing plate (5) and the lower pressing plate (6) is 197 mm.

3. A novel continuous casting machine pinch roll rotating arm according to claim 2, characterized in that: The diameter of each bolt hole (9) is 22 mm.

4. A novel continuous casting machine pinch roll rotating arm according to claim 1, characterized in that: The contact surfaces of the upper pressing plate (5) and the lower pressing plate (6) are both provided with grooves (12).

5. A novel continuous casting machine pinch roll rotating arm according to claim 4, characterized in that: The length of the groove (12) is 130 mm, and the width of the groove (12) is 24 mm.

6. A novel continuous casting machine pinch roll rotating arm according to claim 1, characterized in that: The distance between the center of the arc-shaped groove (8) and the bottom surface of the upper pressing plate (5) is 1 mm.

7. A novel continuous casting machine pinch roll rotating arm according to claim 1, characterized in that: Each of the bolts (10) is threadedly connected with two nuts (11).

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