Anti-falling device for steel wire rope reel

Abstract

The invention provides a steel wire rope reel anti-falling device which comprises a supporting seat, a monitoring part, a control part and an alarm part, the supporting seat is arranged below a steel wire rope reel and used for bearing the falling steel wire rope reel, the monitoring part comprises a vibration sensor, and the vibration sensor is arranged on a bearing seat of the steel wire rope reel. The monitoring part is used for acquiring vibration information on the bearing seat, the control part is connected with the monitoring part and the alarm part, and the control part is used for acquiring the vibration information and controlling the alarm part to give an alarm when the vibration information is larger than a preset vibration threshold value. The vibration sensor is arranged to obtain the vibration information of the bearing seat, the control part controls the alarm part to give an alarm when the vibration information exceeds the threshold value, real-time monitoring and early warning of the falling risk of the steel wire rope reel are achieved, and the operation safety of equipment is improved. The supporting seat is arranged below the steel wire rope reel, so that a bearing effect can be achieved when the steel wire rope reel falls off, the steel wire rope reel is prevented from further falling off and rolling over, and the damage of accidents is effectively reduced.

Description

Technical Field

[0001] This application belongs to the field of protective equipment technology, specifically relating to a wire rope drum anti-fall device. Background Technology

[0002] Wire rope drums are widely used in equipment such as cranes and winches. The wire rope drum is rotatably connected to a base via a shaft and bearing housing. The surface of the wire rope drum is typically machined with helical grooves to ensure the wire rope is wound in an orderly manner. The wire rope drum is driven to rotate by a power unit, which in turn drives the wire rope in and out. When the wire rope drum rotates clockwise, the wire rope winds onto the drum to achieve winding; when it rotates counterclockwise, the wire rope is released.

[0003] Because of the large weight of the wire rope, once it is wound onto the wire rope drum, it will significantly increase the overall load on the drum, causing the bearing to be subjected to extreme stress and potentially breaking. Once the bearing breaks, the wire rope drum is likely to fall, and there is a lack of corresponding protective devices in the current technology, posing a great safety hazard. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide a wire rope drum anti-fall device that can reduce the risk of wire rope drum shaft breakage.

[0005] To address the aforementioned problems, this application provides a wire rope drum anti-fall device, comprising a support base, a monitoring unit, a control unit, and an alarm unit. The support base is disposed below the wire rope drum to catch any falling wire rope drum. The monitoring unit includes a vibration sensor, which is mounted on a bearing seat of the wire rope drum to acquire vibration information from the bearing seat. The control unit is connected to both the monitoring unit and the alarm unit, and acquires the vibration information. When the vibration information exceeds a preset vibration threshold, the control unit activates the alarm unit to sound an alarm.

[0006] Optionally, the monitoring unit includes an eccentricity monitoring device connected to the control unit. The eccentricity monitoring device includes a first displacement sensor and a second displacement sensor. The wire rope drum includes a rotating shaft. The first displacement sensor and the second displacement sensor are both arranged radially toward the rotating shaft and are arranged opposite each other radially to obtain displacement information of the outer peripheral wall of the rotating shaft. The control unit is used to obtain the displacement information and control the alarm unit to sound an alarm when the displacement information is greater than a preset offset threshold.

[0007] Optionally, the wire rope drum anti-fall device includes a hydraulic locking mechanism, which is radially opposite to the rotating shaft and connected to the control unit to control the hydraulic locking mechanism to radially press the rotating shaft when the displacement information of the outer peripheral wall of the rotating shaft is greater than the offset preset threshold.

[0008] Optionally, the hydraulic locking mechanism includes a base, a hydraulic system, and a plurality of wedges. The base is circumferentially disposed on the outer periphery of the rotating shaft. The plurality of wedges are evenly distributed circumferentially along the rotating shaft and are slidably disposed on the base in the radial direction. The hydraulic system includes a plurality of output ends, each of which corresponds to one of the wedges to push the wedges to press radially against the outer periphery of the rotating shaft.

[0009] Optionally, the support base is disposed below the rotating shaft, the top surface of the support base is a concave arc surface, and the middle part of the top surface is vertically opposite to the axis of the rotating shaft.

[0010] Optionally, the top surface of the support is provided with a graphene-liquid metal composite buffer layer.

[0011] Optionally, the support extends from both ends of the circumferential axis toward the center of the top surface of the support.

[0012] Optionally, the support base is provided with a lifting part, which is connected to the control unit to lift the support base when the vibration information is greater than a preset vibration threshold or when the displacement information of the outer peripheral wall of the rotating shaft is greater than a preset offset threshold, so that the support base moves toward the rotating shaft.

[0013] Optionally, the wire rope drum anti-fall device further includes an anti-detachment upper seat and a lower pressing part. The anti-detachment upper seat is disposed above the wire rope drum and is vertically opposite to the support seat. The bottom surface of the anti-detachment upper seat is a concave arc surface and is adapted to fit the top surface of the support seat to form a ring. The pressing part is connected to the anti-detachment upper seat to lift the support seat when the vibration information is greater than the vibration preset threshold or when the displacement information of the outer peripheral wall of the rotating shaft is greater than the offset preset threshold, so that the anti-detachment upper seat moves toward the support seat and abuts against the support seat.

[0014] Optionally, the alarm device includes an alarm unit, a power generation unit, and a battery. The power generation unit is connected to the wire rope drum and the battery, respectively, and the alarm unit is connected to the control unit and the battery, respectively.

[0015] Beneficial effects: The wire rope drum anti-fall device provided in this embodiment of the invention acquires bearing housing vibration information through a vibration sensor, and the control unit activates an alarm when the vibration information exceeds a threshold. This achieves real-time monitoring and early warning of the risk of wire rope drum falling, enabling early detection of abnormal bearing conditions and alerting operators. This effectively reduces the safety hazard of wire rope drum falling due to shaft breakage, etc., and improves equipment operational safety. By placing a support base below the wire rope drum, it can act as a buffer in the event of a fall, preventing the wire rope drum from further falling and tumbling, effectively minimizing the damage of the accident. Attached Figure Description

[0016] Figure 1 This is a schematic front view of the wire rope drum anti-fall device according to an embodiment of this application; Figure 2 This is a side view of the wire rope drum anti-fall device according to an embodiment of this application; Figure 3 This application presents a schematic diagram of the eccentricity monitoring device and hydraulic locking mechanism according to embodiments of the present application.

[0017] The reference numerals in the attached figures are as follows: 1. Wire rope drum; 2. Shaft; 3. Support base; 4. First displacement sensor; 5. Second displacement sensor; 6. Base; 7. Hydraulic system; 8. Wedge block; 9. Anti-detachment upper seat. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] See also Figures 1 to 3 As shown in the embodiment of this application, a wire rope drum anti-fall device is provided, including a support base 3, a monitoring unit, a control unit, and an alarm unit. The support base 3 is disposed below the wire rope drum 1 and is used to support the falling wire rope drum 1. The monitoring unit includes a vibration sensor, which is disposed on the bearing seat of the wire rope drum 1 to acquire vibration information on the bearing seat. The control unit is connected to the monitoring unit and the alarm unit respectively. The control unit is used to acquire vibration information and control the alarm unit to sound an alarm when the vibration information is greater than a preset vibration threshold.

[0023] By installing vibration sensors to acquire bearing housing vibration information and triggering an alarm in the control unit when the vibration exceeds a threshold, real-time monitoring and early warning of the risk of the wire rope drum 1 falling are achieved. This allows for early detection of abnormal bearing conditions and alerts to operators, effectively reducing the safety hazard of the wire rope drum 1 falling due to factors such as shaft 2 breakage, and improving equipment operational safety. By placing the support base 3 below the wire rope drum 1, it can act as a buffer in the event of a fall, preventing further drop and tumbling, effectively minimizing the damage from an accident.

[0024] Among them, there can be one or more support seats 3. When there are multiple support seats 3, the multiple support seats 3 can be arranged sequentially along the axial direction of the wire rope drum 1.

[0025] The vibration sensor is installed on the bearing housing of the wire rope drum 1 to obtain vibration information on the bearing housing and monitor the vibration of the bearing housing in real time. It converts mechanical vibration into electrical signals to provide data for judging the state of the shaft 2 and the bearing housing.

[0026] The control unit is connected to both the monitoring unit and the alarm unit. After receiving vibration information from the monitoring unit, the control unit compares it with a preset vibration threshold. When the vibration information exceeds the preset threshold, it indicates a potential abnormality in the bearing, such as wear or loosening. In this case, the control unit will control the alarm unit to issue an alarm signal, providing timely warning of abnormal equipment conditions.

[0027] The vibration information includes the maximum amplitude and vibration frequency. The preset vibration threshold also includes the preset maximum safe amplitude and safe vibration frequency.

[0028] Specifically, when the wire rope drum 1 may break or experience other abnormalities due to excessive stress on the shaft 2, the vibration sensor in the monitoring unit first detects the abnormal vibration information of the bearing housing and transmits it to the control unit. The control unit compares the maximum amplitude, vibration frequency, and other data in the vibration signal with the preset maximum safe amplitude and safe vibration frequency. If the amplitude, frequency, and other parameters exceed the preset vibration threshold, the vibration intensity and frequency characteristics generated by the bearing operation have deviated from the normal state. Since the bearing housing and shaft 2 are tightly connected, the abnormal vibration of the bearing housing will reduce the fitting accuracy between the bearing and shaft 2, causing uneven stress on shaft 2. Shaft 2 will be subjected to additional bending and torsional stress, leading to increased metal fatigue and significantly increasing the risk of shaft 2 breaking. If the vibration information exceeds the threshold, the alarm unit is immediately activated to issue an alarm, indicating the risk.

[0029] The control unit can be a PLC controller.

[0030] The monitoring unit includes an eccentricity monitoring device, which is connected to the control unit. The eccentricity monitoring device includes a first displacement sensor 4 and a second displacement sensor 5. The wire rope drum 1 includes a rotating shaft 2. The first displacement sensor 4 and the second displacement sensor 5 are both arranged radially toward the rotating shaft 2 and are arranged opposite each other radially to obtain displacement information of the outer peripheral wall of the rotating shaft 2. The control unit obtains the displacement information and controls the alarm unit to sound an alarm when the displacement information is greater than the offset preset threshold.

[0031] By setting the first displacement sensor and the second displacement sensor 5 radially opposite each other along the rotating shaft 2, the displacement information of the outer peripheral wall of the rotating shaft 2 can be obtained in real time and accurately. By connecting the eccentricity monitoring device to the control unit, the control unit can compare the displacement information with the offset preset threshold. When the displacement information is greater than the offset preset threshold, the control unit controls the alarm unit to issue an alarm message, thereby reducing serious accidents such as fatigue fracture of the rotating shaft 2 and fall of the wire rope drum 1 caused by increased eccentricity.

[0032] The first displacement sensor 4 and the second displacement sensor 5 are both arranged radially toward the rotating shaft 2 and are arranged opposite each other radially along the rotating shaft 2. That is, the first displacement sensor 4 and the second displacement sensor 5 are 180° symmetrical, which ensures that the two sensors can synchronously collect displacement data of the outer peripheral wall of the rotating shaft 2 on the same radial section.

[0033] Specifically, the first displacement sensor 4 and the second displacement sensor 5 are equidistant from the axis of the normally operating rotating shaft 2. When the shaft 2 rotates normally, the distance between each point on its outer periphery and the first displacement sensor 4 and the second displacement sensor 5 remains constant. If the shaft 2 is eccentric, the distance between its outer periphery and the first displacement sensor 4 and the second displacement sensor 5 will change, for example, resulting in abnormal waveforms. The first displacement sensor and the second displacement sensor 5 acquire the displacement information of the outer periphery of the shaft 2 in real time and transmit the data to the control unit. By analyzing the displacement waveforms acquired by the first displacement sensor and the second displacement sensor 5, the control unit can determine whether the shaft 2 is eccentric and the magnitude of the eccentricity. If the displacement information exceeds a preset offset threshold, an alarm is issued.

[0034] The first displacement sensor 4 and the second displacement sensor 5 can be fixed on a bracket, which is fixed to the frame of the wire rope drum 1, thereby ensuring the stable fixation of the first displacement sensor 4 and the second displacement sensor 5. The part of the bracket used to fix the first displacement sensor 4 and the second displacement sensor 5 can be annular and wrapped around the outer periphery of the rotating shaft 2.

[0035] The wire rope drum anti-fall device includes a hydraulic locking mechanism, which is arranged radially opposite to the rotating shaft 2. The hydraulic locking mechanism is connected to the control unit so that when the displacement information of the outer peripheral wall of the rotating shaft 2 is greater than the offset preset threshold, the hydraulic locking mechanism is controlled to press the rotating shaft 2 radially.

[0036] By setting a hydraulic locking mechanism and arranging it radially opposite to the rotating shaft 2 and connecting it to the control unit, when the eccentricity monitoring device detects that the displacement information of the outer peripheral wall of the rotating shaft 2 exceeds the preset offset threshold, the control unit can activate the hydraulic locking mechanism to press the rotating shaft 2 radially. Through the hydraulic system 7, multiple wedges 8 are driven to uniformly squeeze the outer peripheral wall of the rotating shaft 2, which can quickly suppress the abnormal displacement of the rotating shaft 2 caused by eccentricity, effectively reduce the risk of the rotating shaft 2 breaking, and quickly slow down the rotation speed of the rotating shaft 2, thus achieving a braking effect.

[0037] When the displacement information of the outer peripheral wall of the rotating shaft 2 is greater than the offset preset threshold, the control unit controls the motor that drives the wire rope drum 1 to stop, and controls the hydraulic locking mechanism to press the rotating shaft 2 radially, thereby quickly achieving a stop.

[0038] The surface of the hydraulic locking mechanism that contacts the rotating shaft 2 is provided with an anti-slip layer, thereby shortening the braking time.

[0039] The hydraulic locking mechanism includes a base 6, a hydraulic system 7, and multiple wedges 8. The base 6 is circumferentially arranged on the outer periphery of the rotating shaft 2. The multiple wedges 8 are evenly distributed along the circumference of the rotating shaft 2 and can slide radially on the base 6. The hydraulic system 7 includes multiple output ends, each of which corresponds to a wedge 8 to push the wedge 8 radially against the outer periphery of the rotating shaft 2.

[0040] By positioning the base 6 circumferentially on the outer periphery of the rotating shaft 2, and having multiple wedges 8 evenly distributed circumferentially and capable of radial sliding, the output end of the hydraulic system 7 corresponds one-to-one with the wedges 8. The hydraulic system drives the wedges 8 to synchronously press against the outer periphery of the rotating shaft 2 radially. The evenly distributed multi-wedge structure ensures balanced circumferential force on the rotating shaft 2, avoiding additional deformation caused by single-point compression. At the same time, the controllable thrust of the hydraulic system 7 enables precise locking, effectively counteracting the radial force generated by the eccentricity of the rotating shaft 2. This improves the applicability and reliability of the locking mechanism, ensuring rapid and stable radial braking when the rotating shaft 2 experiences abnormal displacement, and reducing the risk of the rotating shaft 2 breaking.

[0041] The base 6 is arranged circumferentially on the outer periphery of the rotating shaft 2, forming a ring support structure around the rotating shaft 2. The wedge 8 is installed radially opposite to the rotating shaft 2, ensuring that the wedge 8 can act directly on the rotating shaft 2 radially when it moves.

[0042] Each wedge 8 is at the same distance from the rotating shaft 2, so that the hydraulic system 7 pushes each wedge 8 to contact the rotating shaft 2 simultaneously, thus avoiding uneven force on the rotating shaft 2.

[0043] Multiple wedges 8 are evenly distributed along the circumference of the rotating shaft 2, and each wedge 8 can be slidably mounted on the base 6 in the radial direction. The base 6 is provided with a radial guide structure, such as a slide or guide rail, so that the wedges 8 can move linearly in the radial direction of the rotating shaft 2 under hydraulic drive, ensuring the accuracy and stability of the action when the wedges 8 press against the rotating shaft 2.

[0044] The hydraulic system 7 includes multiple output ends, each corresponding to a wedge 8, meaning each wedge 8 is driven by an independent hydraulic circuit. When the control unit issues a locking command, the hydraulic system 7 supplies oil to the corresponding hydraulic cylinder through each output end, pushing the wedge 8 to slide synchronously along the radial guide structure of the base 6. This causes multiple wedges 8 to simultaneously press radially against the outer circumferential wall of the rotating shaft 2 from different positions around the shaft, ensuring uniform force on the shaft 2 and preventing additional deformation due to uneven pressure from a single wedge 8. Thus, the coordinated pressing of multiple wedges 8 achieves stable radial locking of the rotating shaft 2, effectively suppressing eccentric displacement of the shaft 2.

[0045] Specifically, in this embodiment, there can be six wedges 8.

[0046] The support base 3 is located below the rotating shaft 2. The top surface of the support base 3 is a concave arc surface, and the middle part of the top surface is vertically opposite to the axis of the rotating shaft 2.

[0047] By placing the support base 3 below the rotating shaft 2 and having a concave arc surface on its top surface, with its center vertically aligned with the axis of the rotating shaft 2, the top surface of the support base 3 can be matched with the curvature of the outer peripheral wall of the rotating shaft 2. When catching the falling wire rope drum 1, the wire rope drum 1 can be moved towards the lowest point of the center of the support base 3, preventing the wire rope drum 1 from coming off the support base 3.

[0048] Specifically, the support base 3 is positioned below the rotating shaft 2. When the wire rope drum 1 falls due to the breakage of the rotating shaft 2, the support base 3 can serve to catch it. The top surface of the support base is designed as a concave arc surface, which can better match the curvature of the outer peripheral wall of the rotating shaft 2. The concave arc surface also has a certain guiding function. During the fall of the wire rope drum 1, it may have a certain lateral velocity component due to initial offset or other factors. The concave arc surface can guide the wire rope drum 1 to adjust its position, reduce offset, and make the wire rope drum 1 more stably supported on the support base 3, thus improving the stability and reliability of the support process.

[0049] Among them, the top surface of the support base 3 forms an arc-shaped surface along the circumference of the wire rope drum 1, that is, the top edge of the cross-section of the support base 3 is a downward concave arc.

[0050] The top surface of the support 3 is provided with a graphene-liquid metal composite buffer layer.

[0051] The cushioning material consists of graphene sheets, GaInSn liquid metal, and a silicone rubber matrix.

[0052] Of these, graphene sheets account for 20 wt%, GaInSn liquid metal accounts for 60 wt%, and silicone rubber matrix accounts for 20 wt%.

[0053] This composite buffer layer consists of graphene sheets, GaInSn liquid metal, and a silicone rubber matrix. It combines the high strength and excellent thermal conductivity of graphene, the high ductility of liquid metal, and the elastic buffering properties of silicone rubber, achieving an energy absorption density of 35 MJ / m³. 3 It can absorb impact energy through multi-stage deformation of the material when the wire rope drum 1 falls, thereby reducing the falling speed of the wire rope drum 1.

[0054] When the wire rope drum 1 falls and impacts the composite buffer layer on the top surface of the support base 3, the composite buffer layer provides cushioning. First, the liquid metal, due to its fluidity, can quickly deform to a certain extent upon impact, initially dispersing some of the impact force. The graphene sheets, with their high strength, bear the main impact resistance, absorbing impact energy through their elastic deformation and preventing further transmission of the impact force to the support base 3. Throughout the process, the liquid metal and graphene sheets work together. The fluidity of the liquid metal allows the graphene sheets to better adapt to changes in the direction and magnitude of the impact force, while the graphene sheets enhance the overall rigidity and impact resistance of the composite buffer layer.

[0055] The support base 3 bends and extends from both ends of the circumferential axis 2 toward the center of the top surface of the support base 3.

[0056] By bending and extending both ends of the support base 3 towards the center of the top surface, when the wire rope drum 1 falls, the bent and extended ends can exert radial restraint on the wire rope drum 1, causing the wire rope drum 1 to roll back to the center of the support base 3, preventing the wire rope drum 1 from coming off to both sides in the circumferential direction, and improving the stability during the connection.

[0057] The support base 3 extends in an arc shape from the top of both ends of the pivot axis 2 towards the upper center of the support base 3. The interior of both ends of the support base 3 along the pivot axis 2 is an arc surface.

[0058] The support base 3 is provided with a lifting part, which is connected to the control part, so as to lift the support base 3 when the vibration information is greater than the vibration preset threshold or when the displacement information of the outer peripheral wall of the rotating shaft 2 is greater than the offset preset threshold, so as to move the support base 3 toward the rotating shaft 2.

[0059] By incorporating a lifting mechanism connected to a control unit, when the monitoring unit detects dangerous signals such as abnormal bearing vibration or eccentric displacement of the shaft 2, the control unit activates the lifting mechanism to elevate the support seat 3 in advance, thereby shortening its distance from the shaft 2. If the wire rope drum 1 falls, this effectively reduces the fall height, thus lowering the impact force and mitigating damage to the support seat 3 and the wire rope drum 1.

[0060] The linkage between the lifting and control units, along with other protective components such as the hydraulic locking mechanism, forms a more comprehensive protection system, enhancing the fall arrest device's response to dangerous situations and its protective effect, thus better ensuring the safe operation of the equipment.

[0061] When the system is in operation, the vibration sensor in the monitoring unit constantly monitors the vibration information of the bearing housing, while the first displacement sensor 4 and the second displacement sensor 5 of the eccentricity monitoring device continuously acquire the displacement information of the outer peripheral wall of the rotating shaft 2. When the vibration information detected by the vibration sensor exceeds a preset vibration threshold, an abnormality occurs in the bearing housing. Similarly, when the displacement information of the outer peripheral wall of the rotating shaft 2 fed back by the eccentricity monitoring device exceeds a preset offset threshold, an eccentricity phenomenon occurs in the rotating shaft 2, and the monitoring unit will quickly transmit the corresponding signal to the control unit.

[0062] Upon receiving an abnormal signal from the monitoring unit, the control unit sends a lifting command to the lifting unit. Upon receiving the command, the lifting unit rises to a preset position.

[0063] Specifically, the lifting part includes a hydraulic cylinder, which is connected to the aforementioned hydraulic system 7. The hydraulic pump of the hydraulic system 7 starts to work, delivering hydraulic oil to the hydraulic cylinder through the oil pipe. Under the pressure of the hydraulic oil, the piston drives the piston rod connected to the support seat 3 to move upward, providing power for the support seat 3 to move upward.

[0064] The lifting section also includes a guide unit. The support base 3 is slidably mounted on the guide unit in a vertical direction. The guide unit can be multiple slide rails arranged circumferentially along the support base 3 and extending vertically.

[0065] Among them, after the support seat 3 moves upward to the preset position, it still maintains a certain distance from the normally operating wire rope drum 1 to avoid interference with the normally operating wire rope drum 1.

[0066] The wire rope drum anti-fall device also includes an anti-detachment upper seat 9 and a pressing part. The anti-detachment upper seat 9 is positioned above the wire rope drum 1 and is vertically opposite to the support seat 3. The bottom surface of the anti-detachment upper seat 9 is a concave arc surface, which is adapted to fit the top surface of the support seat 3 to form a ring. The pressing part is connected to the anti-detachment upper seat 9 so that when the vibration information is greater than the vibration preset threshold or when the displacement information of the outer peripheral wall of the rotating shaft 2 is greater than the offset preset threshold, the support seat 3 is lifted, so that the anti-detachment upper seat 9 moves toward the support seat 3 and abuts against the support seat 3.

[0067] By setting an anti-detachment upper seat 9 and a lower pressing part, and making the anti-detachment upper seat 9 and the support seat 3 vertically opposite each other and the concave arc surface of the bottom surface of the support seat 3 adapted to the top surface of the support seat 3, they can be assembled into a ring structure. During normal operation, it does not affect the rotation of the wire rope drum 1. When the vibration or deviation exceeds the threshold, the lower pressing part drives the anti-detachment upper seat 9 to move toward the support seat 3 and abut against it, forming a closed protective ring with the support seat 3, preventing the wire rope drum 1 from falling and coming off due to its own fixation, avoiding the expansion of the accident, and reducing the safety risk.

[0068] The lower pressing part includes a sliding frame, which can be a gantry-shaped structure. The bottom of the sliding frame is fixed to the ground, and the sliding frame is installed across the wire rope drum 1. The anti-detachment upper seat 9 is vertically slidably installed on the sliding frame.

[0069] Among them, the anti-slip upper seat 9 and the support seat 3 are arranged roughly symmetrically.

[0070] Specifically, the anti-derailment upper seat 9 is positioned directly above the wire rope drum 1, and is vertically aligned with the support seat 3 below. When the anti-derailment upper seat 9 and the support seat 3 are closed, the center line of the entire structure coincides with the axis of the rotating shaft 2. The bottom surface of the anti-derailment upper seat 9 is designed as a concave arc surface. When the anti-derailment upper seat 9 and the support seat 3 are closed, they form a complete ring structure that surrounds the outer periphery of the wire rope drum 1 from top to bottom.

[0071] When the vibration sensor detects that the vibration information of the bearing housing exceeds the preset vibration threshold, or when the displacement information of the outer peripheral wall of the rotating shaft 2 fed back by the eccentricity monitoring device exceeds the preset offset threshold, the monitoring unit transmits the signal to the control unit. After processing, the control unit sends a start command to the pressing unit, and the pressing unit begins to work. The pressing unit includes a hydraulic cylinder, which is connected to the aforementioned hydraulic system 7. The hydraulic pump of the hydraulic system 7 starts to work, delivering hydraulic oil to the hydraulic cylinder through the oil pipe. Under the pressure of the hydraulic oil, the piston drives the piston rod connected to the anti-detachment upper seat 9 to move downward, providing power for the downward movement of the anti-detachment upper seat 9 until it stops moving after abutting against the support seat 3.

[0072] The alarm device includes an alarm unit, a power generation unit, and a battery. The power generation unit is connected to the wire rope drum 1 and the battery, respectively. The alarm unit is connected to the control unit and the battery, respectively.

[0073] By connecting the power generation unit to the wire rope drum 1 and the battery respectively, the mechanical energy of the wire rope drum 1 during rotation can be used to generate electricity, which is then converted into electrical energy and stored in the battery to power the alarm unit. No additional external power supply is required, making it energy-saving and environmentally friendly.

[0074] When the control unit detects abnormal conditions such as vibration information exceeding the preset vibration threshold or displacement information of the outer peripheral wall of the rotating shaft 2 exceeding the preset offset threshold, the control unit controls the alarm unit to issue an alarm via battery power to remind personnel of the potential equipment failure risk, so as to handle the situation in a timely manner and ensure the safe operation of the equipment.

[0075] Specifically, the power generation unit includes a mechanical transmission module, a power generation module, a rectifier and voltage regulator module, and an energy storage interface.

[0076] The mechanical transmission module connects the external mechanical energy input to the power generation module. It includes a driving gear, a driven gear, a transmission shaft, and a bearing support. The driving gear is fixed to one end of the transmission shaft via a key and meshes with the transmission components of the wire rope drum 1. The driven gear is mounted on the other end of the transmission shaft and connects to the rotor shaft of the power generation module. The bearing support uses deep groove ball bearings to provide stable support for the transmission shaft, ensuring low-friction and high-precision operation during transmission.

[0077] The power generation module adopts a permanent magnet synchronous generator structure, consisting of a stator and a rotor. The rotor is composed of an array of neodymium iron boron permanent magnets with high remanence density, which is connected to the driven gear of the mechanical transmission module through the rotor shaft. The stator consists of an iron core made of laminated silicon steel sheets and three-phase windings. The three-phase windings are wound in the slots of the iron core. When the rotor rotates, the magnetic field generated by the permanent magnets cuts the stator windings, generating alternating current based on the principle of electromagnetic induction.

[0078] The rectification and voltage regulation module includes a rectifier bridge, filter capacitors, and a voltage regulator chip. The rectifier bridge, composed of four diodes forming a full-bridge rectifier circuit, converts the AC output from the generator module into DC. The filter capacitors are large-capacity electrolytic capacitors used to smooth the DC voltage waveform after rectification, reducing voltage ripple. The voltage regulator chip is an adjustable linear regulator, which automatically adjusts the output voltage according to load requirements, ensuring a stable DC output voltage to meet the power needs of battery charging and the alarm unit.

[0079] The energy storage interface is equipped with a standard charging port, which connects to the battery's charging management module via wires to enable power transfer between the power generation unit and the battery. Additionally, the interface is equipped with overcurrent and overvoltage protection circuits to prevent battery damage under abnormal conditions.

[0080] The battery is a rechargeable battery and is equipped with a charge / discharge management module.

[0081] The alarm unit includes audible and visual alarm components, such as buzzers and LED lights, and also includes a signal receiving circuit. The units are connected to each other by wires or ribbon cables.

[0082] When the displacement or vibration of the rotating shaft 2 exceeds the threshold, the control unit sends a trigger signal to the alarm unit, which draws power from the battery to drive the sound and light components to issue an alarm.

[0083] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A steel wire rope drum fall arrest device, characterized in that, The device comprises a support base (3), a monitoring unit, a control unit and an alarm unit, the support base (3) is arranged below the steel wire rope drum (1) to support the falling steel wire rope drum (1), the monitoring unit comprises a vibration sensor arranged on the bearing seat of the steel wire rope drum (1) to obtain vibration information of the bearing seat, the control unit is connected with the monitoring unit and the alarm unit, and the control unit is used for obtaining the vibration information and controlling the alarm unit to alarm when the vibration information is greater than a vibration preset threshold.

2. The steel cable reel fall arrest device of claim 1, wherein, The monitoring unit comprises an eccentric monitoring device connected with the control unit, the eccentric monitoring device comprises a first displacement sensor (4) and a second displacement sensor (5), the steel wire rope drum (1) comprises a rotating shaft (2), the first displacement sensor (4) and the second displacement sensor (5) are arranged along the radial direction of the rotating shaft (2) and oppositely arranged along the radial direction of the rotating shaft (2) to obtain the displacement information of the outer peripheral wall of the rotating shaft (2), and the control unit is used for obtaining the displacement information and controlling the alarm unit to alarm when the displacement information is greater than an eccentricity preset threshold.

3. The steel cable reel fall arrest device of claim 2, wherein, The steel wire rope drum anti-falling device comprises a hydraulic locking mechanism oppositely arranged along the radial direction of the rotating shaft (2), the hydraulic locking mechanism is connected with the control unit to control the hydraulic locking mechanism to compress the rotating shaft (2) along the radial direction when the displacement information of the outer peripheral wall of the rotating shaft (2) is greater than the eccentricity preset threshold.

4. The steel cable reel fall arrest device of claim 3, wherein, The hydraulic locking mechanism comprises a base (6), a hydraulic system (7) and a plurality of wedge blocks (8), the base (6) is arranged on the outer peripheral side of the rotating shaft (2) in the circumferential direction, the plurality of wedge blocks (8) are uniformly distributed along the circumferential direction of the rotating shaft (2) and are arranged on the base (6) to be able to slide along the radial direction, and the hydraulic system (7) comprises a plurality of output ends corresponding to the wedge blocks (8) to push the wedge blocks (8) to compress the outer peripheral wall of the rotating shaft (2) along the radial direction.

5. The steel cable reel fall arrest device of claim 2, wherein, The support base (3) is arranged below the rotating shaft (2), the top surface of the support base (3) is an inner concave arc surface, and the central part of the top surface is vertically opposite to the axis of the rotating shaft (2).

6. The steel cable reel fall arrest device of claim 5, wherein, The top surface of the support base (3) is provided with a graphene-liquid metal composite buffer layer.

7. The steel cable reel fall arrest device of claim 5, wherein, The support base (3) is curved and extended to the central part of the top surface of the support base (3) along the two ends of the circumferential direction of the rotating shaft (2).

8. The steel cable reel fall arrest device of claim 2, wherein, The support base (3) is provided with a lifting part connected with the control unit to lift the support base (3) when the vibration information is greater than the vibration preset threshold or when the displacement information of the outer peripheral wall of the rotating shaft (2) is greater than the eccentricity preset threshold, so that the support base (3) moves towards the rotating shaft (2).

9. The steel cable reel fall arrest device of claim 8, wherein, The steel wire rope winding drum anti-falling device further comprises an anti-falling upper seat (9) and a pressing part, the anti-falling upper seat (9) is arranged above the steel wire rope winding drum (1) and vertically opposite to the support seat (3), the bottom surface of the anti-falling upper seat (9) is a concave arc surface and is matched with the top surface of the support seat (3) to be spliced into a ring shape; The pressing part is connected with the anti-falling upper seat (9) to lift the support seat (3) when the vibration information is greater than a preset vibration threshold or when the outer peripheral wall displacement information of the rotating shaft (2) is greater than a preset displacement threshold, so that the anti-falling upper seat (9) moves towards the support seat (3) to abut against the support seat (3).

10. The steel cable reel fall arrest device of claim 1, wherein, The alarm device comprises an alarm unit, a power generation unit and a battery, the power generation unit is connected with the steel wire rope winding drum (1) and the battery respectively, and the alarm unit is connected with the control part and the battery respectively.

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