A friction hoist wire rope slippage monitoring device

Abstract

This utility model relates to the field of safety equipment monitoring technology, and in particular to a friction hoist wire rope slippage monitoring device. It includes a base plate with a sliding groove at its top. A friction wheel is slidably connected to the inner wall of the sliding groove. Multiple linearly distributed ropes are slidably connected to the inner wall of the friction wheel. Tension sensors are installed on the outer walls of the ropes. Multiple uniformly distributed laser displacement sensors are installed on the inner wall of the friction wheel. Multiple uniformly distributed data acquisition modules are fixedly connected to the outer wall of the friction wheel. A control panel is fixedly connected to the top of the base plate, and a data analysis module is fixedly connected to the inner wall of the control panel. Through the collaborative operation of the laser displacement sensors and tension sensors, the laser displacement sensors, which may have their measurement accuracy affected by dust adhesion in dusty environments, benefit from the mutual complementation of the two sets of sensors, ensuring stable monitoring data support and improving the reliability and effectiveness of monitoring, thus guaranteeing the safe operation of the friction hoist.

Description

Technical Field

[0001] This utility model relates to the field of safety equipment monitoring technology, and in particular to a friction hoist wire rope slippage monitoring device. Background Technology

[0002] Friction hoists are mechanical devices that use friction to transmit power and achieve vertical lifting or lowering of heavy objects. They are widely used in material and personnel transportation in mining, construction, ports and other fields. Their core working principle is to achieve power transmission and load lifting through the static friction between the wire rope and the friction wheel.

[0003] Inspect the wear of the drive wheel and guide wheel surface pads to ensure that the friction coefficient meets the requirements. Confirm that the wire rope is free of broken strands, rust, or deformation. Test the sensitivity of the brake, limit switch, and overspeed protection device. Start the brake hydraulic system and gradually release the brake. Observe whether the drive wheel rotates smoothly. Close the safety door. The control panel issues a "lifting permitted" signal. Slowly accelerate the operating handle to the set speed. After stopping, open the safety door to complete unloading and close it. The brake automatically engages. The operator manually releases the hoisting container to the nearest level. The fall arrestor immediately locks, and the buffer device inside the shaft absorbs the impact energy.

[0004] However, traditional monitoring methods mainly rely on manual inspections, observing wear marks on the surface of the wire rope or judging whether slippage exists based on experience. This method is not only inefficient but also inaccurate, and cannot detect potential slippage hazards in time. Some existing monitoring devices use a single sensor for monitoring, such as using only a speed sensor. However, due to environmental interference, such as vibration, dust, and the sensor's own errors, false alarms or missed alarms are likely to occur. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention solves the problem of low efficiency in monitoring wire rope slippage in existing devices, avoids false alarms caused by environmental interference, and improves the reliability of monitoring.

[0007] (II) Technical Solution

[0008] In view of the above-mentioned problems with sliding monitoring, this utility model is proposed.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a friction hoist wire rope slippage monitoring device, including a base plate, a sliding groove opened at the top of the base plate, a friction wheel slidably connected to the inner wall of the sliding groove, a plurality of linearly distributed ropes slidably connected to the inner wall of the friction wheel, a tension sensor installed on the outer wall of the ropes, a plurality of uniformly distributed laser displacement sensors installed on the inner wall of the friction wheel, a plurality of uniformly distributed data acquisition modules fixedly connected to the outer wall of the friction wheel, a control panel fixedly connected to the top of the base plate, a data analysis module fixedly connected to the inner wall of the control panel, and a threshold calculation module fixedly installed on the inner wall of the control panel.

[0010] As a preferred embodiment of the friction hoist wire rope slippage monitoring device of this utility model, a drive motor is fixedly installed at the top of the base plate, the output end of the drive motor is fixedly connected to a main shaft that is fixedly connected to the inner wall of the friction wheel, and a fixing plate that is fixedly connected to the top of the base plate is fixedly connected to the outer wall of the main shaft.

[0011] As a preferred embodiment of the friction hoist wire rope slippage monitoring device of this utility model, the outer wall of the friction wheel is provided with multiple slots to facilitate rope sliding, and the outer wall of the tension sensor is fixedly connected to a fixing column that is fixedly connected to the top of the base plate.

[0012] As a preferred embodiment of the friction hoist wire rope slippage monitoring device of this utility model, the outer wall of the friction wheel is provided with a plurality of evenly distributed mounting grooves, the inner wall of the mounting grooves is slidably connected with a plurality of evenly distributed mounting blocks, the inner wall of the mounting blocks is provided with two mirror-distributed slots, and the inner wall of the slots is fixedly connected with connecting rods.

[0013] As a preferred embodiment of the friction hoist wire rope sliding monitoring device of this utility model, the outer wall of the connecting rod is fixedly connected to a rectangular block that is fixedly connected to the bottom end of the laser displacement sensor, the inner wall of the slot is fixedly connected to a transparent cover, and the outer wall of the friction wheel is fixedly connected to a circular plate that is fixedly connected to the outer wall of the data acquisition module.

[0014] As a preferred embodiment of the friction hoist wire rope slippage monitoring device of this utility model, a buzzer is fixedly connected to the outer wall of the control panel, a rectangular groove is opened on the inner wall of the control panel to facilitate the installation of the data analysis module, and a display screen is fixedly connected to the outer wall of the control panel.

[0015] The beneficial effects of this utility model are:

[0016] 1. By employing a collaborative working mode between a laser displacement sensor and a tension sensor, dual protection is provided for monitoring the operating status of the wire rope. In dusty environments, the laser displacement sensor may experience reduced measurement accuracy due to dust adhesion. In such cases, the tension sensor can promptly detect abnormal wire rope slippage by monitoring changes in wire rope tension. If the tension sensor experiences data deviation due to mechanical vibration, the displacement data acquired by the laser displacement sensor can still provide a reliable basis for judging the operating status of the wire rope. The two sets of sensors complement each other, ensuring stable monitoring data support at all times, thereby improving the reliability and effectiveness of monitoring and guaranteeing the safe operation of the friction hoist.

[0017] 2. The data acquisition module collects sensor monitoring data in real time and transmits it to the data analysis module. The latter performs in-depth analysis of the data to identify the characteristics of wire rope tension and displacement changes under different operating conditions such as heavy load and light load. Based on the analysis results, the threshold calculation module automatically optimizes the slip monitoring threshold. Under heavy load conditions, the alarm threshold is appropriately increased to prevent false alarms triggered by normal tension fluctuations and displacement changes; under light load conditions, the threshold is decreased to ensure that minor slip anomalies can be captured in time, improve monitoring accuracy, and reduce the workload of staff to frequently check due to false alarms. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of the tension sensor of this utility model.

[0021] Figure 3 This is a schematic diagram of the installation structure of the laser displacement sensor of this utility model.

[0022] Figure 4 This is a schematic diagram of the installation structure of the buzzer of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. Base plate; 2. Main shaft; 3. Control panel; 4. Friction wheel; 5. Rope; 6. Circular plate; 7. Fixing plate; 8. Fixing column; 9. Tension sensor; 10. Data acquisition module; 11. Mounting block; 12. Transparent cover; 13. Connecting rod; 14. Rectangular block; 15. Laser displacement sensor; 16. Buzzer; 17. Data analysis module; 18. Threshold calculation module. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Reference Figure 1-3 This is the first embodiment of the present invention, which provides a friction hoist wire rope slippage monitoring device, including a base plate 1. A sliding groove is opened at the top of the base plate 1. A friction wheel 4 is slidably connected to the inner wall of the sliding groove. Multiple linearly distributed ropes 5 are slidably connected to the inner wall of the friction wheel 4. Tension sensors 9 are installed on the outer wall of the ropes 5. The tension sensors 9 sense the deformation generated by the tension of the ropes 5 through strain gauges and convert it into an electrical signal to measure the tension. Multiple uniformly distributed laser displacement sensors 15 are installed on the inner wall of the friction wheel 4. The laser displacement sensors 15 use the principle of laser emission and reflection to calculate the distance change between the sensor and the surface of the wire rope by measuring the time from laser emission to reception.

[0027] Multiple evenly distributed data acquisition modules 10 are fixedly connected to the outer wall of the friction wheel 4. The data acquisition modules 10 are responsible for real-time acquisition of electrical or digital signals output by the tension sensor 9 and the laser displacement sensor 15, and converting them into digital quantities that can be processed by a computer for subsequent analysis and processing. The top of the base plate 1 is fixedly connected to the control panel 3. The inner wall of the control panel 3 is fixedly connected to the data analysis module 17. The data analysis module 17 analyzes and calculates the acquired sensor data, extracts key information such as wire rope tension and displacement through preset algorithms and models, and determines whether it is within the normal working range. The inner wall of the control panel 3 is fixedly installed with a threshold calculation module 18. The threshold calculation module 18 dynamically calculates the sliding judgment threshold based on the normal operating data characteristics of the wire rope and parameters such as the operating load and speed of the hoist, providing an accurate standard for monitoring wire rope slippage.

[0028] A drive motor is fixedly installed at the top of the base plate 1. The output end of the drive motor is fixedly connected to a main shaft 2 that is fixedly connected to the inner wall of the friction wheel 4. A fixing plate 7 that is fixedly connected to the top of the base plate 1 is fixedly connected to the outer wall of the main shaft 2.

[0029] The outer wall of the friction wheel 4 has multiple slots to facilitate the sliding of the rope 5, and the outer wall of the tension sensor 9 is fixedly connected to a fixing post 8 that is fixedly connected to the top of the base plate 1.

[0030] During use, the laser displacement sensor 15 continuously emits a laser beam to the surface of the wire rope. By measuring the time difference of the reflected laser, the distance change data between the surface of the wire rope and the friction wheel 4 is accurately obtained, thereby determining whether the wire rope has slipped. At the same time, the tension sensor 9 installed on the outer wall of the rope body 5 monitors the tension of the wire rope in real time.

[0031] When one set of sensors is affected by environmental interference or malfunctions, the other set of sensors can still work independently to ensure the accuracy and reliability of the monitoring data. For example, if the laser displacement sensor 15 has measurement errors due to environmental factors such as dust and water mist, the wire rope tension data monitored by the tension sensor 9 can still provide a key basis for judging whether the wire rope has slipped. Conversely, when the tension sensor 9 malfunctions, the displacement change data collected by the laser displacement sensor 15 can also be used alone to analyze the operating status of the wire rope.

[0032] Example 2

[0033] Reference Figure 1 and Figure 4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the outer wall of the friction wheel 4 is provided with a plurality of evenly distributed mounting grooves, the inner wall of the mounting grooves is slidably connected with a plurality of evenly distributed mounting blocks 11, the inner wall of the mounting blocks 11 is provided with two mirror-distributed slots, and the inner wall of the slots is fixedly connected with a connecting rod 13.

[0034] A rectangular block 14 is fixedly connected to the outer wall of the connecting rod 13 and is fixedly connected to the bottom end of the laser displacement sensor 15. A transparent cover 12 is fixedly connected to the inner wall of the slot. The transparent cover 12 is used to protect the laser displacement sensor 15 from damage. A circular plate 6 is fixedly connected to the outer wall of the friction wheel 4 and is fixedly connected to the outer wall of the data acquisition module 10.

[0035] A buzzer 16 is fixedly connected to the outer wall of the control panel 3. The buzzer 16 is used to sound when abnormal data is encountered during the monitoring process to remind the staff. A rectangular slot is opened on the inner wall of the control panel 3 to facilitate the installation of the data analysis module 17. A display screen is fixedly connected to the outer wall of the control panel 3.

[0036] During operation, when the hoist is under heavy load, the tension on the wire rope increases, and its displacement range is significantly different from that under light load. At this time, the threshold calculation module 18 plays an adaptive threshold control function. Based on the comprehensive analysis results of the wire rope tension and displacement data under the current working conditions by the data analysis module 17, it automatically adjusts the threshold of slip monitoring. For example, under heavy load conditions, the threshold calculation module 18 will appropriately increase the alarm threshold for tension and displacement changes to avoid false alarms triggered by normal tension fluctuations and displacement changes. Under light load conditions, the threshold will be lowered accordingly to ensure that even minor slip abnormalities can be detected in time. The operation is then complete.

[0037] The remaining structure is the same as that in Example 1.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A friction hoist wire rope slip monitoring device, characterized by: The system includes a base plate (1), a sliding groove is provided at the top of the base plate (1), a friction wheel (4) is slidably connected to the inner wall of the sliding groove, a plurality of linearly distributed ropes (5) are slidably connected to the inner wall of the friction wheel (4), a tension sensor (9) is installed on the outer wall of the ropes (5), a plurality of uniformly distributed laser displacement sensors (15) are installed on the inner wall of the friction wheel (4), a plurality of uniformly distributed data acquisition modules (10) are fixedly connected to the outer wall of the friction wheel (4), a control panel (3) is fixedly connected to the top of the base plate (1), a data analysis module (17) is fixedly connected to the inner wall of the control panel (3), and a threshold calculation module (18) is fixedly installed on the inner wall of the control panel (3).

2. A friction hoist wire rope slip monitoring device as claimed in claim 1, characterized in that: A drive motor is fixedly installed at the top of the base plate (1), and the output end of the drive motor is fixedly connected to a main shaft (2) which is fixedly connected to the inner wall of the friction wheel (4). A fixing plate (7) which is fixedly connected to the top of the base plate (1) is fixedly connected to the outer wall of the main shaft (2).

3. A friction hoist wire rope slip monitoring device as claimed in claim 1, wherein: The outer wall of the friction wheel (4) is provided with multiple slots to facilitate the sliding of the rope (5), and the outer wall of the tension sensor (9) is fixedly connected to a fixing column (8) that is fixedly connected to the top of the base plate (1).

4. A friction hoist wire rope slip monitoring device as claimed in claim 1, wherein: The outer wall of the friction wheel (4) is provided with a plurality of uniformly distributed mounting grooves. The inner wall of the mounting groove is slidably connected with a plurality of uniformly distributed mounting blocks (11). The inner wall of the mounting block (11) is provided with two mirror-distributed slots. The inner wall of the slot is fixedly connected with a connecting rod (13).

5. A friction hoist wire rope slip monitoring device as claimed in claim 4, characterized in that: The outer wall of the connecting rod (13) is fixedly connected to a rectangular block (14) which is fixedly connected to the bottom end of the laser displacement sensor (15). The inner wall of the slot is fixedly connected to a transparent cover (12). The outer wall of the friction wheel (4) is fixedly connected to a circular plate (6) which is fixedly connected to the outer wall of the data acquisition module (10).

6. A friction hoist wire rope slip monitoring device as claimed in claim 1, characterized in that: A buzzer (16) is fixedly connected to the outer wall of the control panel (3), and a rectangular groove is provided on the inner wall of the control panel (3) to facilitate the installation of the data analysis module (17). A display screen is fixedly connected to the outer wall of the control panel (3).

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