Device for connecting air cylinder and pressure head of synchronizing mechanism of flame cutting machine

Abstract

The utility model discloses a device for connecting a cylinder and a pressure head of a synchronizing mechanism of a flame cutting machine, which belongs to the technical field of flame cutting machines and comprises a connecting rod and a pin shaft. One end of the connecting rod is provided with a threaded sleeve which is in threaded fit with a cylinder cap; a shaft seat for mounting a pin shaft is arranged at the other end of the connecting rod; a shaft sleeve is arranged on the outer wall of the pin shaft; the shaft seat is formed by splicing a first connecting part and a second connecting part which wrap the outer side of the shaft sleeve, the shaft seat is cylindrical, and the first connecting part and the second connecting part are connected through a bolt; the outer wall of the first connecting part is fixedly connected with the end part of the connecting rod; the connecting rod is perpendicular to the pin shaft. The first connecting part and the second connecting part are spliced to form the cylindrical shaft seat, the shaft sleeve and the pin shaft are clamped through bolt connection so as to achieve rotation of the shaft and transmission of force, when a fault occurs, the shaft seat can be quickly opened through the bolt, and then the shaft sleeve and / or the pin shaft in the shaft seat can be replaced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flame cutting machine technical field, concretely relates to a device of connecting the cylinder and the pressure head of flame cutting machine synchronous mechanism. BACKGROUND

[0002] Flame cutting machine is one of the core equipment of slab continuous casting machine, in the process of high-temperature continuous production, it bears the vital task, namely the accurate cutting of various specifications of the casting blank after straightening treatment, and is cut into the fixed length that meets the production demand. This cutting process is crucial to meet the production demand, because only through accurate cutting, can the size and quality of the casting blank meet the requirements of subsequent processing.

[0003] In the working process of flame cutting machine, first, the pressure head is driven by the cylinder to press down the casting blank, to ensure that the casting blank remains stable during the cutting process. Subsequently, the casting blank drives the cutting machine to run synchronously, to ensure the synchronism of the cutting process. In this process, two cutting trolleys will move horizontally, and the cutting torch on the trolley will move relatively above the slab, thereby completing the cutting work of the casting blank.

[0004] The synchronous mechanism of the flame cutting machine is composed of multiple key components, including a double-stroke cylinder, a shaft hinge base, and a pressure head made of a water-cooled rectangular steel pipe. These components work together to ensure the accuracy and synchronism of the cutting process. The cylinder is installed above the water-cooled trolley frame and connected to one end of the pressure head, while the other end of the pressure head is hinged to the rear of the rear trolley frame. During the cutting process, the cylinder pushes the pressure head to press the casting blank, allowing the cutting trolley to run synchronously with the casting blank, ensuring that the cutting gap is perpendicular to the longitudinal axis of the casting blank.

[0005] The working principle of the flame cutting machine is as follows: in the standby state, the solenoid valve is in a power-off state, the pressure head is in an upper position, and the brake of the cutting trolley transmission device is in a power-off braking state. When the casting blank runs to a position 200 mm before the cutting fixed size, the automatic control system controls the solenoid valve to be powered on, causing the pressure head to quickly descend and stop at a position 50 mm away from the surface of the casting blank (this distance is controlled by the stroke of the cylinder). When the casting blank continues to run to the cutting fixed size position, the automatic control system controls the solenoid valve to be powered on again, causing the pressure head to press on the surface of the casting blank with full pressure, and the brake of the cutting trolley transmission device is powered on to release, and the cutting trolley runs synchronously with the casting blank.

[0006] When the cutting work of the casting blank is completed, the automatic control system controls the solenoid valve to be power off, causing the pressure head to rise to the limit position and enter the standby state. However, due to design reasons, when the cylinder, pressure head or bearing of the connecting device has a problem, the pin shaft of the connection between the cylinder and the pressure head will become very difficult to disassemble, which will cause the replacement time of the equipment to be prolonged, thereby affecting the start-up production of the continuous casting machine. Utility Model Content

[0007] This utility model addresses the technical problems existing in the prior art by providing a device for connecting the cylinder and pressure head of the synchronization mechanism of a flame cutting machine, which can conveniently and quickly disassemble and replace the bushing and pin.

[0008] The purpose of this utility model is to provide a device for connecting the cylinder and the pressure head of a flame cutting machine's synchronization mechanism, including a connecting rod and a pin; a threaded sleeve that engages with the cylinder head is provided at one end of the connecting rod; a shaft seat for mounting the pin is provided at the other end of the connecting rod; a bushing is provided on the outer wall of the pin; the shaft seat is composed of a first connecting part and a second connecting part that wrap around the outside of the bushing, and the shaft seat is cylindrical, with the first connecting part and the second connecting part connected by bolts; the outer wall of the first connecting part is fixedly connected to the end of the connecting rod; the connecting rod and the pin are perpendicular to each other.

[0009] Preferably, the outer side wall of the splicing surface of the first connecting part and the second connecting part is provided with an outwardly extending protrusion, and a bolt hole is provided on the protrusion; the central axis of the bolt hole is parallel to the central axis of the connecting rod.

[0010] Preferably, the bushing is a steel bushing.

[0011] Preferably, the first connecting part and the second connecting part have the same structure and size.

[0012] The advantages and positive effects of this utility model are:

[0013] This invention, through ingenious design, employs a first connecting part and a second connecting part, which can be spliced ​​together to form a cylindrical shaft seat structure. This structure, connected by bolts, effectively clamps the bushing and pin, thereby achieving smooth shaft rotation and efficient force transmission. In practical use, if the equipment malfunctions, engineers can easily open the shaft seat by quickly removing the bolts, allowing for convenient replacement and maintenance of the internal bushing and / or pin. This design not only greatly simplifies the replacement process of the bushing and pin but is also particularly suitable for limited working areas with confined space and difficult operation during maintenance and disassembly. Therefore, this shaft seat structure has been widely used in the cylinder and pressure head connection of flame cutting machines in continuous casting areas. It is also suitable for the connection needs of other similar equipment and provides great convenience and efficiency when operating in similar environments. Attached Figure Description

[0014] Figure 1 This is a front view of a preferred embodiment of the present invention;

[0015] Figure 2This is a cross-sectional view of a preferred embodiment of the present invention;

[0016] Figure 3 This is a front view of the second connecting portion in a preferred embodiment of the present invention;

[0017] Figure 4 This is a left view of the second connecting portion in a preferred embodiment of the present invention;

[0018] The components are: 1. threaded sleeve; 2. connecting rod; 3. first connecting part; 4. second connecting part; 5. bushing; 6. bolt hole; 7. bolt; 8. pin. Detailed Implementation

[0019] To make the above-mentioned objectives, control system design, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0020] like Figures 1 to 4 As shown, the technical solution of this utility model is as follows:

[0021] A device for connecting the cylinder and the pressure head of a flame cutting machine's synchronization mechanism includes a connecting rod 2 and a pin 8; wherein,

[0022] At one end of the connecting rod 2 ( Figure 1 The left end of the cylinder is provided with a threaded sleeve 1 that mates with the cylinder head thread. The design process of the threaded sleeve 1 is as follows: First, measure the inner diameter, pitch and length of the cylinder head thread. Then, determine the machining dimensions of the internal thread of the cylinder connection threaded sleeve 1 based on the measurement results to ensure a tight and secure connection.

[0023] A bearing seat for mounting a pin 8 is provided at the other end of the connecting rod 2; a bushing 5 is provided on the outer wall of the pin 8; the bearing seat is composed of a first connecting part 3 and a second connecting part 4 that wrap around the outside of the bushing 5, and the bearing seat is cylindrical. The first connecting part 3 and the second connecting part 4 are connected by bolts; the outer wall of the first connecting part 3 is fixedly connected to the end of the connecting rod 2; the connecting rod 2 and the pin 8 are perpendicular to each other. The dimensional design process of the bushing 5 is as follows: First, the inner and outer diameters of the cylinder head spherical bearing are measured, and then the inner and outer diameters of the bushing 5 are determined according to the inner and outer diameters. At the same time, the center hole distance of the pressure head is measured to determine the width of the bushing 5, thereby determining the machining dimensions of the bushing 5. This ensures the fit between the bushing and the pin, thereby protecting the shaft, reducing wear, and improving the stability and service life of the equipment; finally, the inner diameters and widths of the first connecting part 3 and the second connecting part 4 are determined according to the outer diameter and width of the bushing 5. The outer diameters of the first connecting part 3 and the second connecting part 4 are designed to smoothly transition with the circular tangent of the connecting rod 2, and they are welded to ensure a firm connection and smooth operation.

[0024] The outer side wall of the splicing surface of the first connecting part 3 and the second connecting part 4 is provided with a protrusion extending outward, and a bolt hole 6 is formed in the protrusion; the central axis of the bolt hole 6 is parallel to the central axis of the connecting rod 2. The thickness and width of the bolt connection part are determined according to the inner and outer diameters, thickness and width of the first connecting part 3 and the second connecting part 4, and the length is reasonably designed to realize firm connection, simplicity, convenience.

[0025] The shaft sleeve 5 is a steel shaft sleeve.

[0026] The first connecting part 3 and the second connecting part 4 are the same in structure and size.

[0027] The detailed description of the working principle is as follows:

[0028] 1) First, the head part of the cylinder needs to be disassembled for subsequent installation. This step is the basis of the whole process, and it is necessary to ensure that the head part is completely removed for the next connection operation.

[0029] 2) Next, connect the cylinder to the pressure head connecting device. In this step, the threaded sleeve 1 needs to be connected to the telescopic rod of the cylinder. In order to ensure the firmness of the connection, the threaded sleeve 1 needs to be tightened with a wrench. This process needs to be operated carefully to ensure that the connection between the threaded sleeve 1 and the telescopic rod of the cylinder is firm and reliable.

[0030] 3) Then, the pin shaft 8 is inserted and installed on the pressure head and the shaft sleeve 5. This step needs to ensure that the pin shaft 8 can smoothly pass through the pressure head and the shaft sleeve 5, and during the installation process, it is necessary to ensure that the position of the pin shaft 8 is accurate and correct, so that the subsequent connection work can be smoothly carried out.

[0031] 4) After completing the above steps, the cylinder needs to be pressed down to make the first connecting part 3 fit with the shaft sleeve 5. Then, the installation of the second connecting part 4 is carried out. During the installation process, the connecting bolt 7 needs to be installed in the bolt hole 6, and a wrench is used to tighten it. During the tightening process, attention should be paid to the uniform force on both sides to ensure the tightening effect of the connecting bolt 7. After the connecting bolt is tightened, it is necessary to ensure that the inner circle of the first connecting part 3 and the second connecting part 4 fits tightly with the shaft sleeve 5 without gap. In this way, the stability and reliability of the connecting device can be ensured.

[0032] After the installation of the connecting device is completed, the stroke of the telescopic rod of the cylinder needs to be adjusted to ensure that after the connecting device is installed, the pressure head can press the cast blank tightly when the cylinder is pressed for the second time. In this way, the pressure head can run synchronously with the cast blank to ensure that the slit is perpendicular to the longitudinal axis of the cast blank, so that the slab slit is neat and meets the production needs. This process needs to be carefully adjusted to ensure that the stroke of the telescopic rod of the cylinder can meet the production needs, thereby ensuring the quality of the product.

[0033] The utility model discloses simple and clear structure design can effectively promote the service life of cylinder and pressure head connecting part, significantly reduce the pressure head pressure of the insufficient pressure of the flame cutting machine and the synchronousity of the casting blank, cause the cutting gap to be not neat, the slab cutting is not complete and other equipment and production failure, and further promote the operation efficiency and service life of equipment.

[0034] The connecting mode between the original flame cutting machine cylinder head and the pressure head adopts the joint bearing inner through pin shaft, although the joint bearing has multidirectional bearing capacity and large angle rotating performance, but its bearing capacity is relatively low. In slab cutting operation, the pressure head needs to act on the surface of the casting blank with all pressure until cutting is completed, and then is lifted and withdrawn to the preset position, and continues to press down for cutting of the next slab. In this process, the joint bearing bears pressure for a long time and is baked by high temperature, and if lubrication is insufficient, it is easy to crack and damage due to excessive stress.

[0035] The utility model discloses the connecting mode of shaft and shaft sleeve is replaced with the connecting mode of original joint bearing and shaft, and the steel shaft sleeve is used as the bearing part, is responsible for bearing the rotation, sliding and other movements of shaft. The steel shaft sleeve has the advantages of high rigidity and high bearing capacity, and is suitable for equipment under high load and high temperature environment. In addition, the cost of the steel shaft sleeve is low, and it is suitable for mass production, which can not only prolong the service life of the connecting device, reduce the replacement frequency and maintenance time, but also reduce the cost of spare parts consumption.

[0036] Meanwhile, the utility model effectively avoids the difficult problem of pin shaft disassembly caused by pressure head deformation, cylinder failure and bearing damage. The original joint bearing and the pin shaft are rigidly connected, and although the installation is fastened, the disassembly is difficult, and the phenomenon of forced cutting often occurs because the pin shaft cannot be disassembled. Since the cylinder and the pressure head connecting device are located at the bottom of the flame cutting machine, the operation space is small, and the cutting is limited, which leads to long disassembly time and affects the equipment start-up. After adopting the technical scheme of the utility model, when replacing the parts, only the connecting bolts at both ends need to be disassembled, the first connecting part and the second connecting part are opened, and then the pin shaft and the shaft sleeve can be easily removed. Even if the pin shaft and the shaft sleeve are stuck and cannot be disassembled, since the first connecting part and the second connecting part have been disassembled, the pin shaft can be removed by cutting off the worn old shaft sleeve, which is simple and convenient to operate, does not affect the maintenance time, provides great convenience for replacement operation and rapid maintenance production rhythm.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change and modification made according to the technical essence of the utility model belong to the range of the technical scheme of the utility model.

Claims

1. A device for connecting a gas cylinder and a ram of a synchronous mechanism of a flame cutting machine, comprising a connecting rod (2) and a pin (8); characterized in that, Threaded sleeve (1) is arranged at one end of connecting rod (2) and cooperates with cylinder head; shaft seat is arranged at the other end of connecting rod (2) and installs pin shaft (8); shaft sleeve (5) is arranged at the outer wall of pin shaft (8); the shaft seat is composed of first connecting part (3) and second connecting part (4) spliced and wrapped outside shaft sleeve (5), the shaft seat is cylindrical, and the first connecting part (3) and the second connecting part (4) are connected by bolts; the outer wall of the first connecting part (3) is fixedly connected with the end of the connecting rod (2); the connecting rod (2) and the pin shaft (8) are perpendicular to each other.

2. The apparatus of claim 1, wherein, The outer wall of the splicing surface of the first connecting part (3) and the second connecting part (4) is provided with outwardly extending protrusions, and bolt holes (6) are formed in the protrusions; the central axis of the bolt hole (6) is parallel to the central axis of the connecting rod (2).

3. The apparatus of claim 1, wherein, The shaft sleeve (5) is a steel shaft sleeve.

4. The apparatus of claim 1, wherein, The structure and size of the first connecting part (3) and the second connecting part (4) are the same.

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