A vibrating mechanism for a continuous casting mold

Abstract

The utility model relates to cast steel equipment technical field, concretely is a kind of vibration mechanism for continuous casting crystallizer, it includes: base, the top surface of base is fixedly connected with two side plates;Vibration frame, it is located above base and is used to install crystallizer body;Eccentric rotation drive assembly, it is provided with two, respectively install in the inner side wall of two side plates, the eccentric rotation drive assembly includes crank and connecting rod, the crank is rotatably connected with its corresponding side plate, one end of the connecting rod is hinged with the eccentric part of crank, the other end of the connecting rod is hinged with vibration frame, the rotary motion of the crank is converted into reciprocating linear motion of vibration frame by connecting rod. In the utility model, by adopting symmetrical eccentric rotation drive assembly, make vibration frame stress balance, effectively reduce eccentric load and sway, improve motion synchronism, and eccentric rotation drive assembly drives vibration frame pure mechanical drive, need not hydraulic station or complex transmission chain, system structure is simple, maintenance workload is significantly reduced.

Description

Technical Field

[0001] This utility model relates to the field of steel casting equipment technology, specifically a vibration mechanism for a continuous casting crystallizer. Background Technology

[0002] The continuous casting crystallizer is the core component of the continuous casting machine, often referred to as the "heart" of the continuous casting equipment. It is a forced water-cooled bottomless ingot mold, which mainly receives molten steel and cools and solidifies it to form a billet shell. It is used in the continuous casting production of iron and steel and non-ferrous metals. The equipment consists of a frame, copper plate, cooling system, vibration system and adjustment system. Water cooling accelerates the solidification of molten steel, and the vibration device enables stable demolding of the billet shell to prevent steel leakage or breakage. According to the shape of the inner wall, it is divided into straight and curved types.

[0003] In existing technologies, crystallizer vibration devices typically consist of a base, a vibration table, a drive mechanism, a guide mechanism, and a buffer reset mechanism. The drive mechanism often employs hydraulic servo cylinders or electric cylinders. When using hydraulic servo cylinders, a hydraulic station and servo valve assembly are required, resulting in a complex system with high energy consumption, extensive maintenance, and susceptibility to malfunctions due to oil contamination. When using electric cylinders, the rotary motion must be converted into linear motion via ball screws or rack and pinion mechanisms, leading to numerous components, high costs, and stringent requirements for sealing and lubrication. Utility Model Content

[0004] The purpose of this invention is to provide a vibration mechanism for a continuous casting crystallizer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vibration mechanism for a continuous casting crystallizer, comprising:

[0007] The base has two side plates fixedly connected to its top surface;

[0008] A vibration frame, located above the base, is used to mount the crystallizer body;

[0009] Two eccentric rotary drive assemblies are provided, which are respectively installed on the inner sidewalls of two side plates. The eccentric rotary drive assembly includes a crank and a connecting rod. The crank is rotatably connected to its corresponding side plate. One end of the connecting rod is hinged to the eccentric part of the crank, and the other end of the connecting rod is hinged to the vibration frame. The rotational motion of the crank is converted into the reciprocating linear motion of the vibration frame through the connecting rod.

[0010] Furthermore, the two side plates are symmetrically arranged on the top surface of the base, and motor mounts are fixedly connected to the outer side walls of the two side plates. Servo motors are fixedly installed on the top surfaces of the two motor mounts, and the motor shafts of the two servo motors are respectively connected to the corresponding two cranks for transmission.

[0011] Furthermore, the base has four uprights fixedly connected symmetrically to each other on its top surface, located on the same side and in pairs, and the inner sidewalls of the four uprights are provided with sliding grooves.

[0012] Furthermore, the vibration frame has two opposite side walls that are fixedly connected to connecting columns, and two connecting rods are rotatably connected to the ends of the two connecting columns respectively. A support rod is provided on each side of the vibration frame, one end of the support rod is fixed to the vibration frame, and the other end of the support rod is fixedly connected to a slider. The four sliders are respectively slidably engaged with the grooves of the four columns.

[0013] Furthermore, a connecting plate is sleeved and fixed to the outer wall of the connecting column, and the two ends of the connecting plate are respectively sleeved and fixed to the outer walls of the two support rods on the same side.

[0014] Furthermore, the top surface of the vibration frame is fixedly connected to a top frame, and the top surfaces of the two columns on the same side are jointly fixedly connected to a top plate.

[0015] Furthermore, at least one hydraulic shock absorber is provided between the bottom surface of the top plate and the top surface of the top frame, and several hydraulic shock absorbers are provided between the bottom surface of the top frame and the top surface of the base.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By employing a symmetrical eccentric rotary drive assembly, the vibration frame is subjected to balanced forces, effectively reducing off-center loading and swaying, and improving motion synchronization. Furthermore, the vibration frame is driven purely mechanically by the eccentric rotary drive assembly, eliminating the need for a hydraulic station or complex transmission chain. This results in a simple system structure and significantly reduced maintenance workload. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front view of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the base structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the vibration frame structure in this utility model.

[0022] In the diagram: 100, crystallizer body; 200, base; 210, side plate; 211, motor base; 220, servo motor; 230, column; 231, slide rail; 240, top plate; 300, vibration frame; 310, top frame; 320, connecting column; 330, support rod; 340, slider; 350, connecting plate; 400, eccentric rotation drive assembly; 410, crank; 420, connecting rod; 500, hydraulic shock absorber one; 600, hydraulic shock absorber two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 In this embodiment of the present invention, a vibration mechanism for a continuous casting crystallizer includes a base 200, a vibration frame 300, and an eccentric rotation drive assembly 400. The base 200 is horizontally fixed on the foundation frame of the continuous casting machine. Two side plates 210 are fixedly connected to the top surface of the base 200, and the two side plates 210 are symmetrical about left and right. The vibration frame 300 is located above the base 200 and is used to mount the crystallizer body 100. The crystallizer body 100 can vibrate synchronously with the vibration frame 300. The eccentric rotation drive assembly 400... There are two eccentric rotary drive assemblies 400, which are respectively installed on the inner sidewalls of the two side plates 210. Each eccentric rotary drive assembly 400 includes a crank 410 and a connecting rod 420. The crank 410 is rotatably connected to its corresponding side plate 210. One end of the connecting rod 420 is hinged to the eccentric part of the crank 410, and the other end of the connecting rod 420 is hinged to the vibration frame 300. The rotational motion of the crank 410 is converted into the reciprocating linear motion of the vibration frame 300 through the connecting rod 420.

[0025] Specifically, during the casting process, the two cranks 410 rotate at a constant speed around their rotation center, and the eccentric part of the crank 410 makes a circular motion, which drives one end of the connecting rod 420 to rotate synchronously. The rotational motion of the crank 410 is converted into the reciprocating linear motion of the vibrating frame 300 by the connecting rod 420. The crystallizer body 100 is fixed on the vibrating frame 300 and vibrates up and down synchronously with the vibrating frame 300 at the set frequency and amplitude.

[0026] Example

[0027] like Figure 1 and Figure 3-4As shown, in this embodiment, two side plates 210 are symmetrically arranged on the top surface of the base 200. Motor mounts 211 are fixedly connected to the outer walls of both side plates 210. Servo motors 220 are fixedly mounted on the top surfaces of both motor mounts 211. The motor shafts of the two servo motors 220 are respectively connected to two corresponding cranks 410 for transmission. Four columns 230 are symmetrically fixedly connected to the top surface of the base 200, located on the same side and arranged in left-right pairs. Slide grooves 231 are provided on the inner side walls of all four columns 230. Two opposite side walls of the vibration frame 300 are fixedly connected to connecting columns 320. The connecting columns 320 are welded to the center line of the side wall of the vibration frame 300. Two connecting rods 420 are rotatably connected to the ends of the two connecting columns 320 respectively. A support rod 330 is set on each side of the vibration frame 300. One end of the support rod 330 is fixed to the vibration frame 300, and the other end of the support rod 330 is fixedly connected to a slider 340. The four sliders 340 are respectively slidably engaged with the sliding grooves 231 of the four columns 230 to form a four-sided constraint, ensuring that the vibration frame 300 only moves in a straight line up and down. A gap of 0.1 to 0.2 mm is left between the sliders 340 and the sliding grooves 231, and a solid lubricating film is coated on them.

[0028] In this embodiment, two servo motors 220 arranged symmetrically on the left and right are respectively fixed on motor mounts 211 on the outer side of the corresponding side plates 210. After the motor shafts of the servo motors 220 pass through the side plates 210, they are rigidly connected to the rotation center of their respective cranks 410. The eccentric part of the crank 410 is connected to one end of the connecting rod 420 through a joint bearing. The other end of the connecting rod 420 is hinged to the connecting post 320 on the side wall of the vibration frame 300. A set of support rods 330 is provided on each side of the vibration frame 300. The outer end of each support rod 330 is fixedly connected to the connecting post 320. A slider 340 is attached, which is embedded in the groove 231 of the corresponding column 230. There are four columns 230 in total, arranged symmetrically in pairs to form a four-sided guide. The sliding engagement between the groove 231 and the slider 340 only allows the vibration frame 300 to move in a straight line in the vertical direction, preventing horizontal deviation and torsion. When the two servo motors 220 rotate synchronously, the cranks 410 on both sides generate a circular motion with the same speed and radius, causing the connecting rod 420 to swing and push the vibration frame 300 to reciprocate in the vertical direction along the path of the groove 231.

[0029] like Figure 4 As shown, in this embodiment, a connecting plate 350 is sleeved and fixed on the outer wall of the connecting column 320, and the two ends of the connecting plate 350 are respectively sleeved and fixed on the outer walls of the two support rods 330 on the same side.

[0030] In practice, an integral connecting plate 350 is sleeved and welded to the outer wall of the connecting column 320. The two ends of the connecting plate 350 continue to extend forward and are respectively sleeved and welded to the outer walls of the two support rods 330 on the same side. Thus, the connecting column 320, the connecting plate 350 and the two support rods 330 form a closed rigid frame structure. The connecting plate 350 connects the two support rods 330 and the connecting column 320 into one unit, which significantly improves the lateral and torsional stiffness. The horizontal component force transmitted by the crank 410-connecting rod 420 is evenly distributed to the two support rods 330 and the slider 340 through the connecting plate 350, reducing single-point stress concentration and improving motion accuracy and mechanism life.

[0031] like Figure 1-2 As shown, in this embodiment, a top frame 310 is fixedly connected to the top surface of the vibration frame 300, and a top plate 240 is fixedly connected to the top surfaces of the two columns 230 on the same side. The top plate 240 and the top frame 310 are vertically opposite each other and remain parallel. At least one hydraulic shock absorber 500 is provided between the bottom surface of the top plate 240 and the top surface of the top frame 310, and several hydraulic shock absorbers 600 are provided between the bottom surface of the top frame 310 and the top surface of the base 200.

[0032] In specific implementation, the cylinder end of hydraulic shock absorber 500 is hinged to the bottom surface of top plate 240 via a pin, and the piston rod end is hinged to the upper end surface of top frame 310 of vibration frame 300 via a pin. When vibration frame 300 moves upward, hydraulic shock absorber 500 provides compression damping and tension damping when moving downward to suppress overshoot. The cylinder end of hydraulic shock absorber 600 is hinged to the top surface of base 200 via a pin, and the piston rod end is hinged to the lower end surface of top frame 310 via a pin. Hydraulic shock absorber 500 and hydraulic shock absorber 600 together constitute a bidirectional damping system, so that vibration frame 300 is subjected to stable damping and reset action throughout the entire reciprocating stroke, resulting in smooth vibration, low noise, and constant amplitude.

[0033] In this invention, the servo motor 220 has a built-in encoder and is controlled in a closed loop with the PLC. The rotation angle-speed curve of the servo motor 220 can be changed by modifying the PLC parameters. The PLC controller is existing technology and will not be described in detail here.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibration mechanism for a continuous casting crystallizer, characterized in that, include: The base (200) has two side plates (210) fixedly connected to its top surface; A vibrating frame (300) is located above the base (200) and is used to mount the crystallizer body (100); Two eccentric rotary drive assemblies (400) are provided and are respectively installed on the inner sidewalls of two side plates (210). The eccentric rotary drive assembly (400) includes a crank (410) and a connecting rod (420). The crank (410) is rotatably connected to its corresponding side plate (210). One end of the connecting rod (420) is hinged to the eccentric part of the crank (410), and the other end of the connecting rod (420) is hinged to the vibration frame (300). The rotational motion of the crank (410) is converted into the reciprocating linear motion of the vibration frame (300) through the connecting rod (420).

2. The vibration mechanism for a continuous casting mold according to claim 1, characterized in that, Two side plates (210) are symmetrically arranged on the top surface of the base (200). Motor mounts (211) are fixedly connected to the outer side walls of the two side plates (210). Servo motors (220) are installed and fixed on the top surface of the two motor mounts (211). The motor shafts of the two servo motors (220) are respectively connected to the corresponding two cranks (410) for transmission.

3. The vibration mechanism for a continuous casting mold according to claim 1, characterized in that, The top surface of the base (200) is symmetrically connected to four columns (230), which are located on the same side and are paired left and right. The inner sidewalls of the four columns (230) are provided with sliding grooves (231).

4. The vibration mechanism for a continuous casting mold according to claim 1, characterized in that, Two opposite side walls of the vibration frame (300) are fixedly connected to connecting columns (320), and two connecting rods (420) are rotatably connected to the ends of the two connecting columns (320). A support rod (330) is provided on each side of the vibration frame (300). One end of the support rod (330) is fixed to the vibration frame (300), and the other end of the support rod (330) is fixedly connected to a slider (340). The four sliders (340) are slidably engaged with the sliding grooves (231) of the four columns (230).

5. The vibration mechanism for a continuous casting mold according to claim 4, characterized in that, A connecting plate (350) is sleeved and fixed on the outer wall of the connecting column (320), and the two ends of the connecting plate (350) are respectively sleeved and fixed on the outer walls of two support rods (330) on the same side.

6. The vibration mechanism for a continuous casting mold according to claim 4, characterized in that, The top surface of the vibrating frame (300) is fixedly connected to a top frame (310), and the top surfaces of the two columns (230) on the same side are fixedly connected to a top plate (240).

7. The vibration mechanism for a continuous casting mold according to claim 6, characterized in that, At least one hydraulic shock absorber (500) is provided between the bottom surface of the top plate (240) and the top surface of the top frame (310), and several hydraulic shock absorbers (600) are provided between the bottom surface of the top frame (310) and the top surface of the base (200).

Images