Anti-skid monitoring device for coal mine elevator

Abstract

The utility model relates to the technical field of monitoring devices, and discloses a coal mine hoister anti-skid monitoring device which comprises a hoister body, brake modules are arranged on the two sides of the hoister body respectively, and a steel cable is wound around the outer portion of a rotating wheel of the hoister body. A brake caliper of the brake module is movably connected with a rotating wheel of the elevator body in a sleeved mode, and the anti-skid monitoring assembly is arranged on one side of the elevator body and used for conducting anti-skid monitoring on a steel cable on the outer wall of the rotating wheel of the elevator body. The elevator body, the brake module, the first fixing plate, the rotating plate and the fixing holes are used in cooperation, the purpose of conducting independent slip detection on a plurality of steel cables outside a rotating wheel of the elevator body is achieved, movement data are collected through the monitoring wheel abutting against the steel cables, rotation data analysis of the elevator body is combined, and the detection accuracy is improved. The state of each steel cable is judged in real time, the problem that the abnormity of a single steel cable cannot be distinguished in the prior art is solved, and practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of monitoring device technology, and in particular to an anti-slip monitoring device for coal mine hoists. Background Technology

[0002] Coal mine hoists are core equipment used in mines for vertical or inclined transportation of coal, ore, personnel, and equipment. They typically use a motor-driven wire rope and drum (or friction wheel) system for lifting and lowering. Their safety directly impacts mine production efficiency and the safety of personnel and property. The necessity of anti-slip monitoring devices stems from several safety risks. If slippage occurs between the wire rope and drum during hoist operation, it can lead to overload loss of control, wire rope breakage, or equipment damage, potentially causing major accidents. Efficiency impacts include reduced transmission efficiency, increased energy consumption, and compromised transportation stability. Existing typical anti-slip monitoring devices include the tension difference detection method and the speed comparison method. The tension difference detection method measures the tension difference between the two ends of the steel cable (the hoisting container side and the counterweight side) to determine if overall slippage has occurred. The speed comparison method compares the difference between the driving drum speed and the guide and driven drum speeds to determine if slippage exists.

[0003] In existing technologies, the tension difference detection method and the rotation speed comparison method still have certain limitations: the tension difference detection method can only detect the overall slippage of multiple steel cables and cannot distinguish the abnormality of a single steel cable. If the tension of multiple steel cables changes synchronously (such as uniform wear), it may miss the local slippage of a single cable. The rotation speed comparison method reflects the collective friction state of all steel cables and the drum. The rotation speed sensor is usually installed at the end of the drum shaft and cannot sense the microscopic motion difference of a single steel cable, nor can it locate which specific steel cable is slipping. Therefore, it is necessary to propose an anti-slip monitoring device for coal mine hoists to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-slip monitoring device for coal mine hoists.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coal mine hoist anti-slip monitoring device includes a hoist body, with braking modules respectively arranged on both sides of the hoist body. A steel cable is wound around the outside of the hoist body's rotating wheel. The brake calipers of the braking modules are movably sleeved with the rotating wheel of the hoist body. The device also includes an anti-slip monitoring component, disposed on one side of the hoist body, for monitoring the anti-slip of the steel cable on the outer wall of the hoist body's rotating wheel. The anti-slip monitoring component includes a first fixing plate, which is fixedly installed between the two braking modules located on the left side. A second fixing plate is fixedly installed on the top surface of the plate. A fixing ring is movably sleeved on the outside of the second fixing plate. A rotating plate is rotatably connected to the second fixing plate. Fixing holes are opened on both sides of the rotating plate. A monitoring wheel is movably sleeved inside the fixing holes. A rotary encoder is fixedly installed on one side of the rotating plate. The rotating shaft of the rotary encoder is fixedly installed at one end of the rotating shaft of the monitoring wheel. Several protrusions are fixedly installed on the inner circular wall of the monitoring wheel. A vibration sensor and a pressing assembly are fixedly installed on the top surface of the rotating plate. The pressing assembly is used to press down on the monitoring wheel.

[0007] As a further embodiment of this utility model, the pressing assembly includes: a connecting plate, the connecting plate being fixedly installed on one side of the rotating plate, a tension spring being fixedly installed on the bottom surface of the connecting plate, and a fixing ring being fixedly installed with the tension spring.

[0008] As a further embodiment of this utility model, a plurality of threaded grooves are provided on one side of the second fixing plate, and a threaded hole is provided on one side of the fixing ring. A threaded post is threadedly connected to the inner circular wall of the threaded hole, and the threaded post is threadedly connected to the threaded groove.

[0009] As a further embodiment of this utility model, an audible and visual alarm is fixedly installed on one side of the first fixed plate, and a PLC controller is fixedly installed on one side of the first fixed plate. The rotary encoder, the audible and visual alarm, and the PLC controller are electrically connected.

[0010] As a further embodiment of this utility model, a storage battery is fixedly installed on one side of the first fixing plate.

[0011] As a further embodiment of this utility model, a protective cover is fixedly installed on one side of the first fixing plate, and the storage battery is disposed inside the protective cover.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By using the hoist body, braking module, first fixing plate, monitoring wheel, rotating plate and fixing holes in a coordinated manner, the purpose of individually detecting slippage of multiple steel cables outside the hoist body's rotating wheel is achieved. By collecting movement data through the monitoring wheel that abuts against the steel cable, and combining it with the rotation data of the hoist body, the status of each steel cable can be judged in real time, solving the problem that existing technologies cannot distinguish abnormalities in a single steel cable, which is quite practical.

[0014] 2. By unscrewing the threaded post from the threaded groove and lowering the fixing ring to adjust the tension of the tension spring, the downward pressure of the rotating plate and the monitoring wheel can be adjusted. Then, the threaded post can be inserted into the corresponding threaded groove to achieve the adjustment function. Emergency power is provided by the installed battery. The installed vibration sensor detects the vibration of the top of the rotating plate and provides timely warning when the steel cable vibrates significantly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an anti-slip monitoring device for a coal mine hoist proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the first fixing plate structure of an anti-slip monitoring device for a coal mine hoist proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the rotating plate structure of an anti-slip monitoring device for a coal mine hoist proposed in this utility model;

[0018] Figure 4 for Figure 3 A partial structural diagram of A in the middle;

[0019] Figure 5 This is a schematic diagram of the monitoring wheel structure of an anti-slip monitoring device for a coal mine hoist proposed in this utility model.

[0020] In the diagram: 1. Hoist body; 2. Braking module; 3. First fixing plate; 4. Monitoring wheel; 5. Rotating plate; 6. Fixing hole; 7. Rotary encoder; 8. Second fixing plate; 9. Connecting plate; 10. Tension spring; 11. Fixing ring; 12. Threaded post; 13. Threaded hole; 14. Threaded groove; 15. Vibration sensor; 16. Audible and visual alarm; 17. Battery; 18. Protective cover; 19. Raised bar. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-5 A coal mine hoist anti-slip monitoring device includes a hoist body 1, with brake modules 2 respectively installed on both sides of the hoist body 1. A steel cable is wound around the outside of the impeller of the hoist body 1. The brake calipers of the brake modules 2 are movably engaged with the impeller of the hoist body 1. The device also includes an anti-slip monitoring component, which is located on one side of the hoist body 1 and is used to monitor the anti-slip activity of the steel cable on the outer wall of the impeller of the hoist body 1. The anti-slip monitoring component includes a first fixing plate 3, which is fixedly installed between the two brake modules 2 located on the left side. The top surface of the first fixing plate 3... A second fixing plate 8 is fixedly installed, and a fixing ring 11 is movably sleeved on the outside of the second fixing plate 8. A rotating plate 5 is rotatably connected to the second fixing plate 8. Fixing holes 6 are opened on both sides of the rotating plate 5. A monitoring wheel 4 is movably sleeved inside the fixing holes 6. A rotary encoder 7 is fixedly installed on one side of the rotating plate 5. The rotating shaft of the rotary encoder 7 is fixedly installed at one end of the rotating shaft of the monitoring wheel 4. Several protrusions 19 are fixedly installed on the inner circular wall of the monitoring wheel 4. A vibration sensor 15 and a pressing assembly are fixedly installed on the top surface of the rotating plate 5. The pressing assembly is used to press down on the monitoring wheel 4.

[0025] In operation, when the rotating wheel rotates, it drives the external steel cable to move. The movement of the steel cable causes the externally contacting monitoring wheel 4 to rotate. Several protrusions 19 are installed in the groove of the monitoring wheel 4. These protrusions 19 increase the friction between the monitoring wheel 4 and the steel cable. Combined with the downward pull of the tension spring 10, this ensures that the monitoring wheel 4 rotates simultaneously with the movement of the steel cable. The rotary encoder 7 connected to the end of the rotating monitoring wheel 4 detects the rotation state of the monitoring wheel 4, thereby monitoring the movement state of the steel cable. Several detection data are analyzed by the PLC controller. When the hoist body 1 starts, its shaft end collects data... According to the data from multiple rotary encoders 7, the data should be within a stable range. When the steel cable slips, an abnormality occurs in the collected data, and an alarm is triggered by the audible and visual alarm 16. At the same time, the PLC controller data is transmitted and communicated with the main controller of the hoist body 1. If necessary, the main controller activates the braking module 2 to brake the wheel, thereby realizing the detection of slippage of multiple steel cables outside the wheel of the hoist body 1. The movement data is collected by the monitoring wheel 4 that is in contact with the steel cable. Combined with the rotation data of the hoist body 1, the status of each steel cable is judged in real time, which solves the problem that the existing technology cannot distinguish the abnormality of a single steel cable, and is more practical.

[0026] In this embodiment, the pressing component includes: a connecting plate 9, which is fixedly installed on one side of the rotating plate 5. A tension spring 10 is fixedly installed on the bottom surface of the connecting plate 9. A fixing ring 11 is fixedly installed with the tension spring 10. A plurality of threaded grooves 14 are opened on one side of the second fixing plate 8. A threaded hole 13 is opened on one side of the fixing ring 11. A threaded post 12 is threadedly connected to the inner circular wall of the threaded hole 13. The threaded post 12 is threadedly connected to the threaded groove 14.

[0027] In use, the threaded post 12 is screwed out of the threaded groove 14, the fixing ring 11 is moved down to adjust the tension of the tension spring 10, thereby adjusting the downward pressure of the rotating plate 5 and the monitoring wheel 4, and then the threaded post 12 is inserted into the corresponding threaded groove 14 to achieve the adjustment function.

[0028] In this embodiment, an audible and visual alarm 16 is fixedly installed on one side of the first fixed plate 3, and a PLC controller is fixedly installed on one side of the first fixed plate 3. The rotary encoder 7, the audible and visual alarm 16 are electrically connected to the PLC controller. A storage battery 17 is fixedly installed on one side of the first fixed plate 3, and a protective cover 18 is fixedly installed on one side of the first fixed plate 3. The storage battery 17 is located inside the protective cover 18.

[0029] In use, emergency power is provided by the installed battery 17, and the installed vibration sensor 15 detects the vibration of the top of the rotating plate 5 and provides timely warning when the steel cable vibrates significantly.

[0030] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0031] By configuring the hoist body 1, when the user is monitoring the anti-slip of the steel cable outside the hoist body 1's rotating wheel, the PLC controller is connected to the main controller of the hoist body 1. The rotary encoder (if not present, it will be installed later) on the shaft end of the hoist body 1 is connected to the PLC controller to read the rotation status of the rotating wheel. When the rotating wheel rotates, it drives the external steel cable to move. The movement of the steel cable drives the externally abutting monitoring wheel 4 to rotate. Several protrusions 19 are installed in the groove of the monitoring wheel 4. The protrusions 19 increase the friction between the monitoring wheel 4 and the steel cable. Combined with the downward pull of the tension spring 10, this ensures that the monitoring wheel 4 rotates as the steel cable moves. The rotary encoder 7 connected to the end of the rotating monitoring wheel 4 detects the rotation status of the monitoring wheel 4, thereby monitoring the movement status of the steel cable. Several detection data are analyzed by the PLC controller. When the hoist body 1 starts, the data collected at its shaft end and the data collected by multiple rotary encoders 7 should be within a stable range. When the steel cable slips, the steel cable may stop or move rapidly, causing the speed of the monitoring wheel 4 to vary. The data collected by the rotary encoders 7 will be abnormal. The wheel of the hoist body 1 will rotate normally, and the data collected at the shaft end will be normal. The data should be within a stable range through real-time comparison of the two. If an abnormality occurs, an alarm will be triggered by the audible and visual alarm 16. At the same time, the PLC controller data will be transmitted and communicated with the main controller of the hoist body 1. If necessary, the main controller will activate the braking module 2 to brake the wheel. This will enable the detection of slippage of multiple steel cables outside the wheel of the hoist body 1. By collecting movement data from the monitoring wheel 4 that is in contact with the steel cable and combining it with the rotation data of the hoist body 1, the status of each steel cable can be judged in real time. This solves the problem that the existing technology cannot distinguish the abnormality of a single steel cable, which is quite practical.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A coal mine hoist anti-skid monitoring device, comprising a hoist body (1), brake modules (2) are arranged on both sides of the hoist body (1) respectively, and a steel cable is wound outside a rotating wheel of the hoist body (1), characterized in that, Also includes: An anti-slip monitoring component is disposed on one side of the hoist body (1) and is used to monitor the steel cable on the outer wall of the hoist body (1) wheel for anti-slip monitoring. The anti-slip monitoring component includes: a first fixing plate (3), which is fixedly installed between the two braking modules (2) located on the left side; a second fixing plate (8) is fixedly installed on the top surface of the first fixing plate (3); a fixing ring (11) is movably sleeved on the outside of the second fixing plate (8); and a rotating plate (5) is rotatably connected to the second fixing plate (8). The rotating plate (5) has fixing holes (6) on both sides. A monitoring wheel (4) is movably sleeved inside the fixing hole (6). A rotary encoder (7) is fixedly installed on one side of the rotating plate (5). The rotating shaft of the rotary encoder (7) is fixedly installed at one end of the rotating shaft of the monitoring wheel (4). Several protrusions (19) are fixedly installed on the inner circular wall of the monitoring wheel (4). A vibration sensor (15) is fixedly installed on the top surface of the rotating plate (5). The brake caliper of the braking module (2) is movably sleeved with the rotating wheel of the hoist body (1). A pressing component is used to press down the monitoring wheel (4).

2. The anti-slip monitoring device for coal mine hoist according to claim 1, characterized in that, The pressing assembly includes: a connecting plate (9), which is fixedly installed on one side of the rotating plate (5), and a tension spring (10) is fixedly installed on the bottom surface of the connecting plate (9), and the fixing ring (11) is fixedly installed with the tension spring (10).

3. The anti-slip monitoring device for coal mine hoist according to claim 1, characterized in that, The second fixing plate (8) has several threaded grooves (14) on one side, and the fixing ring (11) has a threaded hole (13) on one side. The inner circular wall of the threaded hole (13) is threaded with a threaded post (12), and the threaded post (12) is threadedly connected to the threaded groove (14).

4. The anti-slip monitoring device for coal mine hoist according to claim 1, characterized in that, A sound and light alarm (16) is fixedly installed on one side of the first fixed plate (3), and a PLC controller is fixedly installed on one side of the first fixed plate (3). The rotary encoder (7), the sound and light alarm (16) and the PLC controller are electrically connected.

5. The anti-slip monitoring device for coal mine hoist according to claim 1, characterized in that, A storage battery (17) is fixedly installed on one side of the first fixing plate (3).

6. The anti-slip monitoring device for coal mine hoist according to claim 5, characterized in that, A protective cover (18) is fixedly installed on one side of the first fixing plate (3), and the battery (17) is disposed inside the protective cover (18).

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