A finishing mill loop encoder handle

Abstract

The utility model relates to a kind of finishing mill loop encoder handle, including for connecting transmission loop frame and loop encoder, still including first connecting piece, it is connected with the rotating shaft of the transmission loop frame;Second connecting piece, it is connected with the input shaft of the loop encoder, the first connecting piece is connected with the second connecting piece, the rotating shaft is coaxially arranged with the input shaft;Elastic buffer component is set between the first connecting piece and the second connecting piece, and the elastic buffer component is compressed by the first connecting piece and the second connecting piece.It is reduced wear and tear, fatigue fracture phenomenon by setting elastic buffer component absorption vibration impact, improve the service life, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of finishing mill equipment, and in particular to a finishing mill loop encoder connector. Background Technology

[0002] In finishing mill equipment, the looper rolls are located between the stands of the finishing mill unit. They participate in the speed control of the finishing mill unit via angle signals emitted by the looper encoder. Their working principle is as follows: when the strip head passes through the lower stand, the looper rolls lift; when the strip tail leaves the upper stand, the looper rolls fall. The purpose is to store a certain amount of looper rolls between adjacent stands under a certain tension, serving as a buffer when there is speed inconsistency between mills, and reducing the sensitivity of the rolling line to speed adjustments.

[0003] A looper assembly is a device used to adjust the angle, position, and speed of the looper rolls. Each looper assembly consists of a hydraulic cylinder and a drive looper frame. The looper rolls, as driven rolls, rotate around the shaft of the drive looper frame, thus changing their angle and position. The looper encoder connector is a key component connecting the input shaft of the looper encoder to the shaft of the drive looper frame. It ensures that the looper encoder can accurately measure parameters such as the position and speed of the looper rolls, providing precise data for the automated control system of the finishing mill. This enables precise control of the rolling process and ensures the stability of product quality.

[0004] Existing looper encoder connectors present numerous problems in practical applications. From a materials perspective, during the operation of the finishing mill, the looper encoder connector is susceptible to wear and fatigue fracture under the combined effects of high temperature, vibration, impact, and alternating stress, resulting in a short service life and high maintenance costs. Structurally, traditional connector connections are often not robust enough, relying solely on shaft bolts to fix them to the transmission looper frame and the input shaft of the looper encoder. Because the coaxiality requirement between the looper encoder's input shaft and the looper roll is high, even a slight coaxial deviation between the input shaft and the transmission looper frame's rotating shaft during equipment operation will exacerbate connector wear and may even cause unstable signal transmission from the looper encoder, leading to decreased looper roll control accuracy and affecting the dimensional accuracy and surface quality of the rolled steel products. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problems of wear, fatigue fracture and other issues caused by the easy impact of equipment vibration on the traditional loop encoder connector in the prior art. In this way, a loop encoder connector for finishing mill is provided, which absorbs vibration and impact by setting an elastic buffer component, reduces wear and fatigue fracture, improves service life and reduces maintenance costs.

[0006] To solve the above-mentioned technical problems, this utility model provides a finishing mill looper encoder connector, which is used to connect the transmission looper frame and the looper encoder, including, The first connecting member is connected to the rotating shaft of the transmission loop frame; The second connector is connected to the input shaft of the loop encoder, the first connector is connected to the second connector, and the rotating shaft is coaxial with the input shaft; An elastic buffer assembly is disposed between the first connector and the second connector, the elastic buffer assembly including an elastic buffer element, the elastic buffer element being pressed together by the first connector and the second connector.

[0007] In one embodiment of the present invention, the center of the first connector is provided with a first internal spline connection hole, and the rotating shaft of the transmission loop frame is coaxially connected with a first external spline, the first external spline cooperating with the first internal spline connection hole.

[0008] In one embodiment of the present invention, the center of the second connector is provided with a second internal spline connection hole, and the input shaft of the loop encoder is coaxially connected with a second external spline, and the second internal spline connection hole cooperates with the second external spline.

[0009] In one embodiment of the present invention, the elastic buffer includes a plurality of disc springs and a plurality of elastic rubber pads arranged alternately and side by side.

[0010] In one embodiment of the present invention, the elastic buffer assembly further includes a third connector, which connects the first connector and the second connector. The elastic buffer is provided between the third connector and the first connector, and between the third connector and the second connector.

[0011] In one embodiment of the present invention, the center of the third connector is provided with a third internal spline connection hole, and the third internal spline connection hole is engaged with the first external spline and the second external spline.

[0012] In one embodiment of this utility model, the first connecting member is coaxially provided with a first connecting flange, the second connecting member is coaxially provided with a second connecting flange, and the third connecting member is provided as a flange. The first connecting flange, the second connecting flange, and the flange are coaxially connected.

[0013] In one embodiment of the present invention, the elastic buffer is disposed between the first connecting flange and the third connecting member, and between the second connecting flange and the third connecting member, and the elastic buffer is connected to the first connecting flange and the second connecting flange.

[0014] In one embodiment of this utility model, the first connector, the second connector, and the third connector are all made of alloy steel.

[0015] In one embodiment of this utility model, an external spline connecting shaft is further included. The external spline connecting shaft cooperates with the second internal spline connecting hole and the third internal spline connecting hole. The input shaft of the loop encoder is coaxially connected with an internal spline, and the external spline connecting shaft cooperates with the internal spline.

[0016] In one embodiment of this utility model, the first connecting flange, the second connecting flange, and the third connecting member are all provided with connecting holes.

[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects: The finishing mill loop encoder connector of this utility model uses a first connector to connect to the rotating shaft of the transmission loop frame and a second connector to connect to the input shaft of the loop encoder. Connecting the first and second connectors then connects the input shaft of the loop encoder to the rotating shaft of the transmission loop frame, enabling the loop encoder to measure the angle and speed of the transmission loop frame. By setting an elastic buffer component between the first and second connectors, the elastic buffer absorbs the vibration energy and instantaneous impact generated by the equipment, improving the flexibility of the connector, reducing the risk of wear and fatigue fracture, and thus saving on subsequent maintenance costs. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 This is a structural schematic diagram of a cross-sectional view of the encoder connection of the finishing mill looper in a preferred embodiment of the present invention; Figure 2 for Figure 1 Side view of the first connector shown; Figure 3 for Figure 1 The side view of the third connector shown.

[0019] Explanation of reference numerals in the accompanying drawings: 1. First connector; 11. First connecting flange; 111. Connecting hole of the first connector; 12. First internal spline connecting hole; 121. Keyway of the first internal spline connecting hole; 2. Second connector; 21. Second connecting flange; 22. Second internal spline connecting hole; 3. Elastic buffer; 31. Third connector; 311. Third internal spline connecting hole; 3111. Keyway of the third internal spline connecting hole; 312. Connecting hole of the third connector; 4. Bolt. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0021] For reference Figure 1 As shown, in one embodiment of this utility model, a finishing mill looper encoder connector is disclosed, which is used to connect the transmission looper frame and the looper encoder, including, The first connecting member 1 is connected to the rotating shaft of the transmission loop frame; The second connector 2 is connected to the input shaft of the loop encoder, the first connector 1 is connected to the second connector 2, and the rotating shaft is coaxial with the input shaft; An elastic buffer assembly is disposed between the first connector 1 and the second connector 2. The elastic buffer assembly includes an elastic buffer 3, which is pressed together by the first connector 1 and the second connector 2.

[0022] The finishing mill loop encoder connector described in this embodiment uses a first connecting piece 1 to connect the rotating shaft of the transmission loop frame, and a second connecting piece 2 to connect the input shaft of the loop encoder. Connecting the first connecting piece 1 and the second connecting piece 2 further connects the input shaft of the loop encoder to the rotating shaft of the transmission loop frame, enabling the loop encoder to measure the angle and speed of the transmission loop frame. By setting an elastic buffer assembly between the first connecting piece 1 and the second connecting piece 2, and using the elastic buffer 3 to absorb the high-frequency vibration and instantaneous impact generated by the equipment, the flexibility of the connector is improved, reducing the risk of wear and fatigue fracture, thereby saving subsequent maintenance costs and ensuring the accuracy and stability of the loop encoder's measurements.

[0023] For reference Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the center of the first connector 1 is provided with a first internal spline connection hole 12, and the shaft of the transmission loop frame is coaxially connected with a first external spline. The first external spline and the first internal spline connection hole 12 cooperate to transmit torque.

[0024] In one embodiment of this utility model, the tooth profile of the first internal spline connecting hole 12 is an involute tooth profile, and the tooth side clearance is controlled between 0.05 and 0.1 mm to ensure a tight fit with the rotating shaft of the transmission looper, thereby improving the accuracy and stability of torque transmission.

[0025] For reference Figure 2As shown, in one embodiment of the present invention, the center of the second connector 2 is provided with a second internal spline connection hole 22, and the input shaft of the loop encoder is coaxially connected with a second external spline. The second internal spline connection hole 22 and the second external spline cooperate to transmit torque.

[0026] For reference Figure 1 As shown, in one embodiment of this utility model, the elastic buffer 3 includes a plurality of disc springs and a plurality of elastic rubber pads arranged alternately and in parallel. The plurality of disc springs and the plurality of elastic rubber pads are fixedly connected between the first connecting member 1 and the second connecting member 2 by bolts 4. The disc springs are made of 60Si2MnA spring steel material and are made by quenching and tempering treatment, which has good elasticity and fatigue life. The elastic rubber pads are made of oil-resistant and high-temperature resistant nitrile rubber material, which can effectively absorb vibration and impact energy.

[0027] For reference Figure 1 As shown, in one embodiment of this utility model, the elastic buffer assembly further includes a third connector 31, which connects the first connector 1 and the second connector 2. The third connector 31 is used for the installation of the elastic buffer 3, making the installation, debugging and maintenance of the elastic buffer assembly more convenient. The third connector 31 can also ensure normal torque transmission in the event of damage or aging of the elastic buffer 3. The elastic buffer 3 is provided between the third connector 31 and the first connector 1, and between the third connector 31 and the second connector 2. The elastic buffer 3 on both sides of the third connector 31 is symmetrically arranged, which can effectively buffer the high-frequency vibration and instantaneous impact generated during the operation of the finishing mill, reduce the impact on the encoder, and improve the stability of encoder signal transmission.

[0028] For reference Figure 3 As shown, the third connector 31 is further provided with a third internal spline connection hole 311 at its center, and the third internal spline connection hole 311 is engaged with the first external spline and the second external spline.

[0029] For reference Figure 1 As shown, further, a first connecting flange 11 is coaxially provided on one side of the first connecting member 1, a second connecting flange 21 is coaxially provided on one side of the second connecting member 2, and the third connecting member 31 is configured as a flange. The first connecting flange 11, the second connecting flange 21 and the flange are coaxially connected.

[0030] For reference Figure 1As shown, in one embodiment of this utility model, the elastic buffer 3 is respectively disposed between the first connecting flange 11 and the third connecting member 31, and between the second connecting flange 21 and the third connecting member 31, to improve the flexibility between the first connecting flange 11 and the third connecting member 31, and between the second connecting flange 21 and the third connecting member 31. The elastic buffer 3 is connected to the first connecting flange 11 and the second connecting flange 21 by bolts 4.

[0031] In one embodiment of this utility model, the first connector 1, the second connector 2, and the third connector 31 are all made of alloy steel. Alloy steel has the characteristics of high strength and high wear resistance, which can significantly improve the wear resistance and fatigue resistance of the connector and effectively resist the impact of harsh working conditions such as high temperature and vibration during the operation of the finishing mill.

[0032] In one embodiment of this utility model, an external spline connecting shaft is also included. The external spline connecting shaft is engaged with the second internal spline connecting hole 22 and the third internal spline connecting hole 311. The three are engaged to transmit torque. The input shaft of the loop encoder is coaxially connected with an internal spline. The external spline connecting shaft is engaged with the internal spline. The two are engaged to transmit torque. The function of the external spline connecting shaft is to adapt to encoders of different brands or models (with different specifications of internal splines), thereby improving the versatility of the connection.

[0033] Furthermore, the tooth profile of the external spline connecting shaft is also involute, and the tooth flank clearance is controlled between 0.05 and 0.1 mm, forming a good fit with the internal spline of the loop encoder input shaft to transmit torque. For reference Figure 2 As shown, in one embodiment of this utility model, the first connecting flange 11 is provided with a plurality of connecting holes 111, the second connecting flange 21 is provided with a plurality of connecting holes, and the third connecting member 31 is also provided with connecting holes 312, so as to facilitate the fixed connection of the elastic buffer assembly.

[0034] For reference Figure 1 As shown, in one embodiment of this utility model, the diameters of the first connecting flange 11, the second connecting flange 21, and the third connecting member 31 are equal.

[0035] In one embodiment of the present invention, the first connecting member 1 is also connected to the rotating shaft of the transmission loop frame by bolts, and the second connecting member 2 is also connected to the input shaft of the loop encoder by bolts.

[0036] The working principle of the finishing mill loop encoder connection described in this utility model is as follows: Assemble the first internal spline connecting hole 12 of the first connecting piece 1 with the first external spline of the transmission looper frame shaft, and then fix the first connecting piece 1 on the transmission looper frame shaft with bolts 4. Next, assemble the second internal spline connecting hole 22 of the second connecting piece 2 with the external spline connecting shaft, and then assemble the external spline connecting shaft with the internal spline on the looper encoder input shaft. Then fix the second connecting piece 2 on the encoder input shaft with bolts 4. Finally, install the elastic buffer assembly between the first connecting piece 1 and the second connecting piece 2, and fix it on the first connecting piece 1 and the second connecting piece 2 with bolts 4. Tighten the bolts 4 to generate a certain preload force in the elastic buffer assembly, thus completing the connection between the transmission looper frame shaft and the encoder input shaft.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A finishing mill looper encoder connector, used to connect the transmission looper frame and the looper encoder, characterized in that, include, The first connecting member is connected to the rotating shaft of the transmission loop frame; The second connector is connected to the input shaft of the loop encoder, the first connector is connected to the second connector, and the rotating shaft is coaxial with the input shaft; The first connector has a first internal spline connection hole at its center, and the shaft of the transmission looper is coaxially connected to a first external spline, which mates with the first internal spline connection hole. The second connector has a second internal spline connection hole at its center, and the input shaft of the looper encoder is coaxially connected to a second external spline, which mates with the second internal spline connection hole. The teeth of the first internal spline connection hole are involute teeth, and the tooth flank clearance is controlled between 0.05 and 0.1 mm. An elastic buffer assembly is disposed between the first connector and the second connector. The elastic buffer assembly includes an elastic buffer element, which is pressed together by the first connector and the second connector. The elastic buffer element includes a plurality of alternating and parallel disc springs and a plurality of elastic rubber pads. The elastic buffer assembly further includes a third connector, which connects the first connector and the second connector. The elastic buffer is provided between the third connector and the first connector, and between the third connector and the second connector. The first connector has a first connecting flange coaxially, the second connector has a second connecting flange coaxially, and the third connector is a flange. The first connecting flange, the second connecting flange, and the flange are coaxially connected. The diameters of the first connecting flange, the second connecting flange, and the third connector are equal. The center of the third connector has a third internal spline connection hole, which mates with both the first external spline and the second external spline. It also includes an external spline connecting shaft, which is engaged with the second internal spline connecting hole and the third internal spline connecting hole. The three are engaged to transmit torque. The input shaft of the loop encoder is coaxially connected with an internal spline. The external spline connecting shaft is engaged with the internal spline. The two are engaged to transmit torque.

2. The finishing mill loop encoder connector according to claim 1, characterized in that, The elastic buffer is disposed between the first connecting flange and the third connecting member, and between the second connecting flange and the third connecting member, and the elastic buffer is connected to the first connecting flange and the second connecting flange.

3. The finishing mill loop encoder connector according to claim 1, characterized in that, The elastic buffer is also connected to the flange.

4. The finishing mill loop encoder connector according to claim 1, characterized in that, The first connector, the second connector, and the third connector are all made of alloy steel.

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