Protective components for transmission devices and metallurgical cranes

Abstract

This invention discloses a protective component for a transmission device and a metallurgical crane. The transmission device includes an input shaft, a coupling, and an output shaft connected in sequence. The coupling moves axially under abnormal conditions. The protective component includes two retaining rings and a detection module. The two retaining rings are respectively fitted onto the input shaft and the output shaft, located on both sides of the coupling. When the coupling moves axially, it can abut against the retaining rings. Specifically, when the thrust of the coupling on the retaining rings is less than a pushing threshold, the retaining rings axially limit the coupling; when the thrust exceeds the pushing threshold, the coupling pushes the retaining rings axially. A detection module is spaced apart on the side of the retaining rings away from the coupling. The detection module is used to monitor the axial displacement of the coupling or the retaining rings. The retaining rings achieve effective protection and graded limiting of axial movement on both sides of the coupling, improving the flexibility and accuracy of coupling movement protection.

Description

Technical Field

[0001] This application relates to the field of metallurgical machinery technology, and in particular to a protective component for a transmission device and a metallurgical crane. Background Technology

[0002] The transmission devices of metallurgical cranes, such as the hoisting mechanism of a metallurgical casting bridge crane, are core production equipment, and their safety is of paramount importance. Couplings, as key mechanical components in the transmission chain of these devices, are prone to axial movement due to bolt breakage, tooth wear, and other reasons, leading to catastrophic accidents such as wheel sags and shaft breakage. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] The first aspect of this application proposes a protective component for a transmission device. The transmission device includes an input shaft, a coupling, and an output shaft connected in sequence. The coupling moves axially under abnormal conditions. The protective component includes two retaining rings and a detection module. The two retaining rings are respectively fitted onto the input shaft and the output shaft, located on both sides of the coupling. When the coupling moves axially, it abuts against the retaining rings. When the thrust of the coupling on the retaining rings is less than a pushing threshold, the retaining rings axially limit the coupling. When the thrust of the coupling on the retaining rings exceeds the pushing threshold, the coupling pushes the retaining rings to move axially. A detection module is spaced apart on the side of the retaining rings away from the coupling. The detection module is used to monitor the axial displacement of the coupling or the retaining rings.

[0005] In some of the technical solutions provided in this application, the transmission device is equipped with a braking module, and the protection components also include a control module, which is used to trigger the braking module when the axial displacement of the coupling or retaining ring exceeds the alarm value.

[0006] In some of the technical solutions provided in this application, the transmission device is equipped with a braking module, and the protection components also include a control module, which is used to trigger the braking module when the axial displacement of the coupling or retaining ring exceeds the alarm value.

[0007] In some technical solutions provided in this application, the coupling includes a flange and a connecting part. The flange is arranged around the outer periphery of the connecting part. The input shaft and the output shaft extend into the connecting part from both sides. The detection module also includes a second detection element, which is located on the end face of the reducer facing the coupling. The second detection element is used to obtain the axial displacement of the coupling.

[0008] In some of the technical solutions provided in this application, the second detection element is used to obtain the distance between the reducer and the flange end face.

[0009] In some of the technical solutions provided in this application, the detection module further includes: a measuring target, the measuring target being disposed on the coupling, and a second detection element used to obtain the distance between the reducer and the end face of the measuring target.

[0010] In some of the technical solutions provided in this application, when the axial displacement of the coupling or retaining ring is between the warning value and the alarm value, the control module issues a warning message, and the warning value is less than the alarm value.

[0011] In some of the technical solutions provided in this application, when the axial displacement of the coupling or retaining ring is between the warning value and the alarm value, the control module issues a warning message, and the warning value is less than the alarm value.

[0012] In some of the technical solutions provided in this application, the retaining ring includes: two half-rings and a connector. The end faces of the two half-rings are opposite to each other and coaxially arranged. The connector connects the two half-rings respectively, so that the two half-rings are detachably connected.

[0013] The second aspect of this application provides a metallurgical crane, which includes: a transmission device, a braking module, and a protective assembly provided in any of the above embodiments. The braking module is used to brake the transmission device.

[0014] Compared with related technologies, the present invention has at least the following beneficial effects: The coupling effectively protects against axial movement by incorporating retaining rings on both sides. These retaining rings provide tiered limiting of axial movement, acting as a primary interceptor in the initial stages of movement and providing rigid resistance during extreme movements, thus enhancing the flexibility and accuracy of the protection against axial movement. Furthermore, the detection module monitors the movement displacement in real time, preventing minor movements from affecting transmission stability and promptly capturing abnormal movement signals. This provides data support for subsequent protective actions, making the safety protection of the transmission device more accurate and comprehensive. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 An axial schematic diagram of a protective component according to one embodiment of this application; Figure 2 A front view of a protective component according to one embodiment of this application; Figure 3 A schematic diagram of the structure of a semi-ring according to an embodiment of this application; Figure 4A schematic diagram of the structure of a retaining ring according to an embodiment of this application; Figure 5 A schematic flowchart illustrating a braking method for a protective component according to an embodiment of this application.

[0016] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Snap ring; 110. Half ring; 120. Connector; 200. Detection module; 210. First detection component; 220. Second detection component; 230. Measuring target; 21. Input shaft; 22. Output shaft; 23. Coupling; 231. Flange; 232. Connecting part; 24. Reducer. Detailed Implementation

[0017] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0018] The first aspect of this application provides a protective component for a transmission device, such as... Figure 1 and Figure 2 As shown, the transmission device includes an input shaft 21, a coupling 23, and an output shaft 22 connected in sequence. The coupling 23 moves axially under abnormal conditions. The protective assembly includes two retaining rings 100 and a detection module 200. The two retaining rings 100 are respectively fitted onto the input shaft 21 and the output shaft 22, located on both sides of the coupling 23. When the coupling 23 moves axially, it can abut against the retaining rings 100. Specifically, when the thrust of the coupling 23 on the retaining rings 100 is less than a pushing threshold, the retaining rings 100 axially limit the coupling 23. When the thrust of the coupling 23 on the retaining rings 100 exceeds the pushing threshold, the coupling 23 pushes the retaining rings 100 to move axially. A detection module 200 is spaced apart on the side of the retaining rings 100 away from the coupling 23. The detection module 200 is used to monitor the axial displacement of the coupling 23 or the retaining rings 100.

[0019] In this embodiment, the transmission device can be the hoisting mechanism of a metallurgical crane. The two ends of the coupling 23 are connected to the input shaft 21 and the output shaft 22, respectively, to transmit the power from the input shaft 21 to the output shaft 22. The coupling 23 may move axially left and right under abnormal conditions. Figure 2 In the diagram, the arrow at position X points to the axial direction of coupling 23.

[0020] Snap rings 100 are fitted onto the input shaft 21 and output shaft 22 respectively. A coupling 23 is located between the two snap rings 100. The snap rings 100 are made of forgings or high-strength alloy steel and undergo heat treatment to ensure their mechanical strength far exceeds the torque impact of the transmission device. The snap rings 100 exert a certain clamping force on the input shaft 21 or output shaft 22. When the coupling 23 moves into the position of the snap rings 100, it abuts against the snap rings 100. When the coupling 23 is in the initial stage of movement, such as when bolts are loose, the thrust of the coupling 23 on the snap rings 100 is less than the pushing threshold. The snap rings 100, through their strong clamping force with the input shaft 21 or output shaft 22, transmit the impact force to the input shaft 21 or output shaft 22 itself. The snap rings 100 form a primary barrier and limit the axial movement of the coupling 23, inhibiting further expansion of displacement. When the coupling 23 is in an extreme situation, the thrust of the coupling 23 on the retaining ring 100 exceeds the pushing threshold. The coupling 23 pushes the retaining ring 100 to move axially. The retaining ring 100 acts as the last mechanical barrier, rigidly limiting the disengagement range of the coupling 23, preventing the coupling 23 from being completely thrown out, and avoiding the components or housing connected to the input shaft 21 or output shaft 22 from being pried apart.

[0021] A detection module 200 is provided at intervals on the outer side of the retaining ring 100. When the coupling 23 or the retaining ring 100 moves, the detection module 200 can obtain the axial displacement of the coupling 23 or the retaining ring 100 in real time, realizing direct monitoring of the mechanical state of the transmission device, enabling the staff to grasp the movement of the coupling 23 in a timely manner, and filling the safety blind spot.

[0022] The coupling 23 effectively protects against axial movement by using retaining rings 100 on both sides. The retaining rings 100 provide graded limiting of axial movement of the coupling 23, forming a primary interception in the initial stage of movement and providing rigid resistance during extreme movement, thus improving the flexibility and accuracy of the protection against axial movement. Furthermore, the detection module 200 monitors the movement displacement in real time, preventing minor movement from affecting transmission stability and promptly capturing abnormal movement signals, providing data support for subsequent protective actions and making the safety protection of the transmission device more accurate and comprehensive.

[0023] For example, the end face of the retaining ring 100 facing the coupling 23 is provided with a buffer layer. The buffer layer is made of an elastic wear-resistant material and has a thickness of 0.5 mm to 3 mm. The buffer layer absorbs the impact force when the coupling 23 and the retaining ring 100 come into contact, reducing the rigid collision wear between the two and extending the service life of the retaining ring 100 and the coupling 23. At the same time, the elastic buffer can prevent the vibration caused by the collision from affecting the transmission accuracy, thus taking into account both protection and equipment durability.

[0024] For example, the outer periphery of the input shaft 21 and the output shaft 22 is provided with scale markings that extend axially to visually indicate the axial displacement of the retaining ring 100, facilitating on-site personnel to quickly determine the degree of abnormality. Furthermore, the scale display results are calibrated in conjunction with the detection module 200 to achieve dual calibration of the displacement value, further improving the accuracy of displacement measurement, avoiding errors from a single detection method, and reducing the difficulty of detection during equipment debugging and maintenance.

[0025] In some embodiments provided in this application, the transmission device is provided with a braking module, and the protection component further includes a control module, which is used to trigger the braking module when the axial displacement of the coupling 23 or the retaining ring 100 exceeds the alarm value.

[0026] In this embodiment, a braking method for the protective component is provided. The braking module is used to brake the transmission device. The control module and the detection module 200 are communicatively connected. The control module can be a PLC (Programmable Logic Controller), such as... Figure 5 As shown, the detection component monitors the position of coupling 23, and the control module processes and judges the detected axial displacement. When the detection module 200 detects that the axial displacement of coupling 23 or retaining ring 100 exceeds the alarm value, the control module sends a high-priority emergency signal to the original metallurgical crane's control system, activating the overload limiter and height limiter, and collaboratively triggering the original metallurgical crane's safety circuit. This de-energizes the main contactor of the braking module, causing the two braking systems—the working brake and the safety brake—to operate simultaneously. The control module is linked with the existing braking module, avoiding the need for an additional independent braking structure in the protection component, simplifying the structure of the protection component, saving the significant cost of purchasing and installing new brakes, and avoiding compatibility issues or insufficient safety levels caused by additional braking circuit design. Furthermore, the control module utilizes the existing mature and efficient braking module to perform braking, achieving millisecond-level rapid response, ensuring braking force, and promptly nipping accidents in the bud, ensuring the reliability and safety of braking action.

[0027] For example, the control module is electrically connected to the safety relay. The safety relay outputs a set of normally closed dry contacts, which are connected in series in the trigger circuit of the braking module. Under normal operating conditions, the normally closed dry contacts remain closed, not affecting the normal operation of the original vehicle. When the detection module 200 detects that the axial displacement exceeds the alarm value, the control module controls the safety relay to operate, causing the normally closed dry contacts to immediately open. This triggers the original vehicle control system to cut off the power supply to the main hoisting motor and drive the working brake and safety brake of the braking module to engage synchronously, according to the preset highest safety logic. The safety relay utilizes the normally closed dry contacts in series with the original vehicle's safety circuit, without altering the original vehicle's control logic and hardware structure, while leveraging the original vehicle's highest safety level braking system for emergency fault response. Furthermore, the dry contact signal integration offers strong compatibility and versatility, facilitating retrofitting.

[0028] In some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the transmission device also includes a reducer 24, which is connected to the output shaft 22. The detection module 200 includes a first detection element 210, which is disposed on the end face of the reducer 24 facing the coupling 23. The first detection element 210 is used to obtain the distance between the reducer 24 and the retaining ring 100 disposed on the input shaft 21.

[0029] In this embodiment, a detection structure for the retaining ring 100 in the detection module 200 is provided. The output end of the reducer 24 is connected to the output shaft 22. A first detection element 210 is provided on the end face of the reducer 24 facing the coupling 23. The first detection element 210 is spaced apart on the side of the coupling 23 connected to the input shaft 21. The first detection element 210 measures the axial distance B1 between the end face of the retaining ring 100 and the reducer 24 in a non-contact manner. The first detection element 210, as the detection module 200, is located on the side of the input shaft 21, which can directly capture the original axial displacement of the coupling 23, avoiding detection errors caused by the superposition of the displacement of the reducer 24 itself, making the measurement data more accurate and the monitoring results more realistic and effective. Furthermore, this side has a spacious interior and fewer components, making installation and maintenance more convenient.

[0030] In other embodiments, the detection module 200 is located on both sides of the coupling 23 to improve the accuracy of the detection data.

[0031] In some embodiments provided in this application, such as Figure 1 and Figure 2As shown, the coupling 23 includes a flange 231 and a connecting part 232. The flange 231 is arranged around the outer periphery of the connecting part 232. The input shaft 21 and the output shaft 22 extend into the connecting part 232 from both sides. The detection module 200 also includes a second detection element 220. The second detection element 220 is disposed on the end face of the reducer 24 facing the coupling 23. The second detection element 220 is used to obtain the axial displacement of the coupling 23.

[0032] In this embodiment, a detection structure for the coupling 23 in the detection module 200 is provided. The second detection element 220 measures the relevant distances of the coupling 23 in a non-contact manner, and then determines the axial displacement of the coupling 23 based on the change in the front and rear distances. The second detection element 220 monitors the axial displacement of the coupling 23 in a non-contact manner, forming a dual monitoring system with the first detection element 210. This achieves redundant arrangement of the two detection elements, avoiding omissions in a single monitoring dimension and malfunctions caused by single-point failures, thus improving the comprehensiveness and reliability of the monitoring. For example, when both the first detection element 210 and the second detection element 220 exceed their limits, the control module determines that the transmission device is in a faulty state.

[0033] For example, the first detection element 210 and the second detection element 220 can be safety-type eddy current displacement sensors or laser rangefinders. The first detection element 210 and the second detection element 220 have strong resistance to pollution and electromagnetic interference, high response frequency, and are suitable for metallurgical working conditions. The first detection element 210 and the second detection element 220 are fixed to the housing of the reducer 24 or an absolutely stationary reference surface by high-strength, anti-loosening mounting brackets.

[0034] In some embodiments provided in this application, such as Figure 2 As shown, the second detection element 220 is used to obtain the distance between the reducer 24 and the end face of the flange 231.

[0035] In this embodiment, a monitoring object of the second detection element 220 is provided, namely the end face of the flange 231. The second detection element 220 detects the distance B2 between the reducer 24 and the end face of the flange 231. The second detection element 220 utilizes the rigid structure of the flange 231 of the coupling 23 itself and the defined end face, avoiding the need for additional target elements for measurement and simplifying the structure of the detection module 200.

[0036] In some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the detection module 200 also includes a measuring target 230, which is disposed on the coupling 23, and a second detection element 220 is used to obtain the distance between the reducer 24 and the end face of the measuring target 230.

[0037] In this embodiment, another monitoring object for the second detection element 220 is provided, namely the end face of the measuring target 230. The measuring target 230 is set on the end face or radial surface of the flange 231 of the coupling 23, so that the measuring target 230 extends radially outward from the outer wall of the flange 231. The second detection element 220 detects the distance B3 between the reducer 24 and the end face of the measuring target 230. The measuring target 230 provides a more stable and flat measurement reference surface for the second detection element 220, avoiding measurement deviations caused by irregularities in the structure of the coupling 23 body. Furthermore, the measuring target 230 expands the target range of the measurement, improves the stability and anti-interference capability of displacement detection, and prevents radial runout during the rotation of the coupling 23 from affecting the measurement results of axial displacement, making the displacement data of the coupling 23 more accurate.

[0038] In some embodiments provided in this application, when the axial displacement of the coupling 23 or the retaining ring 100 is between the warning value and the alarm value, the control module issues a warning message, where the warning value is less than the alarm value.

[0039] This embodiment provides a specific early warning method for the protective components. The control module divides the threshold into two levels: early warning value and alarm value, to achieve a graded response of early warning reminder and alarm braking. This avoids excessive braking that affects production efficiency when there is a slight deviation, while also enabling timely shutdown in case of serious abnormalities, thus balancing production continuity and equipment safety.

[0040] For example, the control module records historical displacement data and predicts the lifespan of coupling 23 through trend analysis, thus achieving predictive maintenance. The control module is communicatively connected to an alarm module, which includes an audible and visual alarm and a remote communication unit. When the axial displacement reaches a warning value, the audible and visual alarm is activated. When the displacement value exceeds the alarm value, the remote communication unit sends alarm information to a preset terminal. This enriches the alarm methods; local audible and visual alarms can alert on-site personnel for timely investigation, while remote communication alarms enable remote monitoring and rapid response, preventing the escalation of anomalies due to lack of on-site personnel and improving the protection system.

[0041] In some embodiments provided in this application, such as Figure 2 As shown, a safety gap is provided between any retaining ring 100 and the coupling 23, and the safety gap is less than the maximum displacement threshold of the coupling 23.

[0042] In this embodiment, a mounting position for the retaining ring 100 is provided. A safety clearance A of 2mm to 3mm is maintained between the retaining ring 100 and the end face of the coupling 23. The safety clearance A is greater than the normal thermal expansion and contraction and fretting displacement of the coupling 23, so as to reserve a small amount of movement space for the normal operation of the coupling 23 and avoid frictional wear caused by no clearance. Furthermore, the safety clearance A is much smaller than the maximum allowable displacement of the coupling 23, ensuring that the coupling 23 can promptly abut the retaining ring 100 in case of abnormal movement, preventing the movement from exceeding the safe range, and balancing operational flexibility and protective effectiveness.

[0043] In some embodiments provided in this application, such as Figure 3 and Figure 4 As shown, the retaining ring 100 includes two half-rings 110 and a connector 120. The end faces of the two half-rings 110 are opposite and coaxially arranged. The connector 120 connects the two half-rings 110 respectively, so that the two half-rings 110 can be detachably connected.

[0044] In this embodiment, a specific structure of the retaining ring 100 is provided. The connecting member 120 can be a bolt. After two coaxial half-rings 110 are sleeved on the outside of the input shaft 21 or output shaft 22, the split surfaces of the two half-rings 110 face each other. The connecting member 120 passes through and connects the two half-rings 110, forming a detachable split structure for the retaining ring 100. The double-clamp split retaining ring 100 is connected by a high-strength reamed hole bolt. By controlling the tightness of the connecting member 120, the clamping force of the retaining ring 100 can be adjusted, ensuring that the retaining ring 100 is firmly clamped onto the input shaft 21 or output shaft 22, preventing the retaining ring 100 from loosening. Furthermore, the split structure facilitates the installation, disassembly, and maintenance of the retaining ring 100 on the input shaft 21 and output shaft 22, improving the convenience of installation and maintenance. Operators can replace or adjust the retaining ring 100 without disassembling shaft components, reducing equipment maintenance costs and downtime, and improving the practicality and maintainability of the protective components.

[0045] A second aspect of this application provides a metallurgical crane, which includes: a transmission device, a braking module, and a protective assembly provided in any of the above embodiments. The braking module is used to brake the transmission device.

[0046] In this embodiment, the metallurgical crane can be a metallurgical casting bridge crane, and the braking module includes a working brake and a safety brake. It should be noted that the metallurgical crane has all the beneficial technical effects of the above-mentioned protective components because it includes the protective components provided in any of the above embodiments. To avoid repetition, it will not be described in detail here.

[0047] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above are merely some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective assembly for a transmission device, characterized in that, The transmission device includes an input shaft, a coupling, and an output shaft connected in sequence. The coupling moves axially under abnormal conditions. The protective assembly includes: Two retaining rings are respectively fitted onto the input shaft and the output shaft, and the two retaining rings are located on both sides of the coupling. The coupling can abut against the retaining rings when it moves. When the thrust of the coupling on the retaining ring is less than the pushing threshold, the retaining ring axially limits the coupling. When the thrust of the coupling on the retaining ring exceeds the pushing threshold, the coupling pushes the retaining ring to move axially. The detection module is provided at a distance from the side of the retaining ring away from the coupling. The detection module is used to monitor the axial displacement of the coupling or the retaining ring.

2. The protective assembly of the transmission device according to claim 1, characterized in that, The transmission device is equipped with a braking module, and the protective components also include: A control module is provided to trigger the braking module when the axial displacement of the coupling or the retaining ring exceeds an alarm value.

3. The protective assembly of the transmission device according to claim 1, characterized in that, The transmission device further includes a speed reducer connected to the output shaft, and the detection module includes: A first detection element is disposed on the end face of the reducer facing the coupling. The first detection element is used to obtain the distance between the reducer and the retaining ring disposed on the input shaft.

4. The protective assembly of the transmission device according to claim 3, characterized in that, The coupling includes a flange and a connecting part. The flange is arranged around the outer periphery of the connecting part. The input shaft and the output shaft extend into the connecting part from both sides. The detection module further includes: The second detection element is located on the end face of the reducer facing the coupling, and the second detection element is used to obtain the axial displacement of the coupling.

5. The protective assembly of the transmission device according to claim 4, characterized in that, The second detection element is used to obtain the distance between the reducer and the flange end face.

6. The protective assembly of the transmission device according to claim 4, characterized in that, The detection module also includes: A measuring target is disposed on the coupling, and the second detection element is used to obtain the distance between the reducer and the end face of the measuring target.

7. The protective assembly of the transmission device according to claim 2, characterized in that, When the axial displacement of the coupling or the retaining ring is between the warning value and the alarm value, the control module issues a warning message, wherein the warning value is less than the alarm value.

8. The protective assembly of the transmission device according to any one of claims 1 to 7, characterized in that, A safety clearance is provided between any of the retaining rings and the coupling, and the safety clearance is less than the maximum displacement threshold of the coupling.

9. The protective assembly of the transmission device according to any one of claims 1 to 7, characterized in that, The retaining ring includes: Two semi-rings, the end faces of the two semi-rings being opposite each other and coaxially arranged; A connector is provided to connect the two half-rings respectively, so that the two half-rings can be detachably connected.

10. A metallurgical crane, characterized in that, include: Transmission device; A braking module is used to brake the transmission device; The protective component as described in any one of claims 1 to 9.

Images