Early warning device for unbalanced suspension tension of first rope of mine hoist

Abstract

The utility model discloses a mine hoist first rope suspension tension imbalance early warning device which comprises a monitoring device, an electric control device and a wireless charging electrical storage device. The number of the monitoring devices is the same as that of the lifting first ropes, and the monitoring devices are fixed to the first rope hanging device and used for monitoring the elongation of a hanging oil cylinder in the first rope hanging device in real time; the electric control device is electrically connected with the monitoring device and used for receiving the elongation information, monitored by the monitoring device, of the suspension oil cylinder, and when the elongation of the suspension oil cylinder exceeds the stroke of the oil cylinder, the electric control device can send out a prompt signal to remind a maintainer to adjust the tension of the steel wire rope in time; the wireless charging power storage device is electrically connected with the monitoring device and the electric control device and used for providing power for the monitoring device and the electric control device. The device is simple in structure and convenient to install, the display screen installed in the monitoring room can display the position size of the suspension oil cylinder in real time, manual measurement is not needed, and labor intensity and maintenance time can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to an early warning device for unbalanced tension of the head rope suspension of a mine hoist, belonging to the technical field of mine hoisting machines. Background Technology

[0002] In my country's mine shaft hoisting systems, the connection between the hoisting container and the head rope employs an automatic tension balancing suspension device. This device utilizes a closed-loop, passive hydraulic automatic balancing system, enabling high-precision automatic balancing of the wire rope under both dynamic and static conditions. Its operation involves adjusting the tension by extending and retracting the piston rod of the hydraulic cylinder within the suspension. When the piston rod compresses, the suspension extends, reducing the wire rope tension; conversely, when the piston rod extends further, the suspension shortens, increasing the wire rope tension. As long as the cylinder's stroke is not at its extreme limit, the tension of each wire rope remains stable and balanced. Furthermore, within the cylinder's stroke range, the position of the piston rod extension has no impact on the wire rope tension.

[0003] While the advantages are quite prominent, there are also some disadvantages. For example, the length of the piston rod extension and whether it has reached its limit can only be measured and observed at close range. Therefore, workers must reach the top of the lifting container, which is dangerous and increases the labor intensity of workers and delays maintenance time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an early warning device for unbalanced tension in the head rope suspension of a mine hoist. It contains fewer accessories, is easy to install, and is highly versatile, meeting the needs of various types of hoisting systems.

[0005] This utility model is achieved according to the following technical solution:

[0006] A mine hoist head rope suspension tension imbalance early warning device includes:

[0007] The number of monitoring devices is the same as the number of lifting head ropes, and the monitoring devices are respectively fixed on the head rope suspension device for real-time monitoring of the elongation of the suspension cylinder in the head rope suspension device.

[0008] An electronic control device, electrically connected to the monitoring device, is used to receive information on the elongation of the suspension cylinder monitored by the monitoring device. When the elongation of the suspension cylinder exceeds the cylinder stroke, the electronic control device can issue a warning signal to remind maintenance personnel to adjust the tension of the wire rope in a timely manner.

[0009] A wireless charging energy storage device is electrically connected to the monitoring device and the electronic control device, and is used to provide power to the monitoring device and the electronic control device.

[0010] In some embodiments, the wireless charging energy storage device includes:

[0011] The transmitting coil is fixed on the derrick and located at the normal stopping position of the hoisting container;

[0012] A receiving coil is fixed to the top of the lifting container. When the lifting container stops normally, the receiving coil and the transmitting coil are on the same horizontal plane and arranged opposite to each other.

[0013] The battery is fixed to the top of the lifting container and electrically connected to the receiving coil. The battery is wirelessly charged through the transmitting and receiving coils.

[0014] In some embodiments, the distance between the transmitting coil and the receiving coil is no greater than 3 cm.

[0015] In some embodiments, the battery is a lithium iron phosphate battery.

[0016] In some embodiments, the monitoring device includes:

[0017] The retainer is fixed to the head rope suspension device;

[0018] A displacement sensor is installed between the head rope suspension device and the piston rod of the suspension cylinder to monitor the position of the piston rod and transmit the monitored position information to the electronic control device.

[0019] In some embodiments, the displacement sensor is a grating ruler, which consists of a scale grating mounted in the middle of the holder and a grating reading head fixed to the top of the piston rod by a clamp.

[0020] In some embodiments, a position detection sensor for limiting the extension and retraction range of the piston rod is respectively installed at the upper and lower ends of the cage.

[0021] In some embodiments, the retainer is a square frame welded from stainless steel rectangular tubes and is fixed to the head rope suspension device by a clamp.

[0022] In some embodiments, the electronic control device includes:

[0023] The controller is fixed to the top of the lifting container and is electrically connected to the monitoring device.

[0024] A wireless transmitter is fixed to the top of the lifting container and electrically connected to the controller. After receiving and processing the information transmitted by the monitoring device, the controller transmits the information to the outside through the wireless transmitter.

[0025] A wireless receiver, installed in the monitoring room, is used to wirelessly receive information transmitted by the wireless transmitter;

[0026] The notification device is electrically connected to the wireless receiver and is used to display the information transmitted by the wireless receiver.

[0027] In some embodiments, the prompting device includes a display for displaying the elongation value of the suspension cylinder in real time. When the elongation value exceeds a preset value, the display issues an audible and visual alarm.

[0028] The beneficial effects of this utility model are:

[0029] With its simple structure, easy installation, and strong applicability, the display screen installed in the monitoring room can display the position and dimensions of the suspension cylinder in real time, eliminating the need for manual measurement and greatly reducing labor intensity and maintenance time. Attached Figure Description

[0030] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0031] In the attached diagram:

[0032] Figure 1 This is a schematic diagram of the overall early warning device for unbalanced tension of the head rope suspension of a mine hoist according to this utility model.

[0033] Figure 2 This is a schematic diagram showing the connection between the monitoring device and the head rope suspension device of this utility model.

[0034] Attached diagram labels: 1-Wireless charging energy storage device, 2-Monitoring device, 3-Electrical control device, 4-Head rope suspension device, 5-Piston rod, 20-Cage, 21-Position detection sensor, 22-Scale grating, 23-Grate reading head, 24-Clamping hoop.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" 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 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.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] like Figure 1 As shown, a mine hoist head rope suspension tension imbalance early warning device includes a monitoring device 2, an electrical control device 3, and a wireless charging energy storage device 1. The number of monitoring devices 2 is the same as the number of head ropes, and the monitoring devices 2 are fixed on the head rope suspension device 4 to monitor the elongation of the suspension cylinder in the head rope suspension device 4 in real time. The electrical control device 3 is electrically connected to the monitoring device 2 and is used to receive the elongation information of the suspension cylinder monitored by the monitoring device 2. When the elongation of the suspension cylinder exceeds the cylinder stroke, the electrical control device 3 can issue a prompt signal to remind maintenance personnel to adjust the wire rope tension in time. The wireless charging energy storage device 1 is electrically connected to the monitoring device 2 and the electrical control device 3 to provide power to the monitoring device 2 and the electrical control device 3.

[0040] The following provides a further explanation of the specific structure of the aforementioned wireless charging energy storage device.

[0041] The wireless charging energy storage device 1 includes a transmitting coil, a receiving coil, and a battery. The transmitting coil is fixed on the derrick and located at the normal stopping position of the hoisting container. The receiving coil is fixed on the top of the hoisting container. When the hoisting container is normally stopped, the receiving coil and the transmitting coil are on the same horizontal plane and arranged opposite to each other. The battery is fixed on the top of the hoisting container and electrically connected to the receiving coil. The battery is wirelessly charged through the transmitting coil and the receiving coil.

[0042] A further proposed solution is to ensure that the distance between the transmitting coil and the receiving coil is no more than 3cm, so that the transmitting coil and the receiving coil can charge the battery every time the vehicle stops.

[0043] A further proposed solution is to use lithium iron phosphate (LFP) batteries. LFP batteries are lithium-ion batteries that use lithium iron phosphate as the positive electrode material and carbon as the negative electrode material. A single cell has a rated voltage of 3.2V and a charging cut-off voltage of 3.6V~3.65V. LFP batteries have advantages such as high operating voltage, high energy density, long cycle life, good safety performance, low self-discharge rate, and no memory effect.

[0044] The following provides a further explanation of the specific structure of the aforementioned monitoring device.

[0045] like Figure 2 As shown, the monitoring device 2 includes a retainer 20 and a displacement sensor; the retainer 20 is fixed on the head rope suspension device 4; the displacement sensor is installed between the head rope suspension device 4 and the piston rod 5 of the suspension cylinder, and is used to monitor the position of the piston rod 5 and transmit the monitored position information to the electronic control device 3.

[0046] Further options, such as Figure 2 As shown, the displacement sensor employs a grating ruler, which consists of a scale grating 22 mounted in the middle of the holder 20 and a grating reading head 23 fixed to the top of the piston rod 5 by a clamp. The grating ruler is a measurement feedback device that operates based on the optical principle of a grating. Its measurement output signal is a digital pulse, featuring a large detection range, high detection accuracy, and fast response speed.

[0047] Further options, such as Figure 2 As shown, a position detection sensor 21 for limiting the extension and retraction range of the piston rod 5 is installed at the upper and lower ends of the retainer 20, respectively.

[0048] In a further embodiment, the retainer 20 is a square frame welded from stainless steel rectangular tubes, which is fixed to the head rope suspension device 4 by clamps 24.

[0049] The following provides a further explanation of the specific structure of the aforementioned wireless charging energy storage device.

[0050] The electrical control device 3 includes a controller, a wireless transmitter, a wireless receiver, and a prompting device. The controller is fixed on the top of the lifting container and electrically connected to the monitoring device 2. The wireless transmitter is fixed on the top of the lifting container and electrically connected to the controller. After receiving and processing the information transmitted by the monitoring device 2, the controller transmits the information to the outside through the wireless transmitter. The wireless receiver is installed in the monitoring room and is used to wirelessly receive the information transmitted by the wireless transmitter. The prompting device is electrically connected to the wireless receiver and is used to display the information transmitted by the wireless receiver.

[0051] In a further embodiment, the prompting device includes a display for displaying the real-time extension value of the suspension cylinder. When the extension value exceeds a preset value, the display issues an audible and visual alarm.

[0052] In summary, this utility model provides an early warning device for unbalanced tension in the head rope suspension of a mine hoist, comprising a wireless charging power storage device, a monitoring device, and an electronic control device. The wireless charging power storage device supplies power to the monitoring device, whose built-in rangefinder monitors the elongation of the head rope suspension cylinder in real time and transmits this data to the electronic control device. When the elongation exceeds the cylinder's stroke, the electronic control device issues an audible and visual alarm to alert maintenance personnel to adjust the wire rope tension promptly. This utility model features a simple structure, convenient installation, and strong applicability. The display screen installed in the monitoring room can show the position and dimensions of the suspension cylinder in real time, eliminating the need for manual measurement and significantly reducing labor intensity and maintenance time.

[0053] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0054] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mine hoist head rope suspension tension imbalance early warning device, characterized in that, include: The number of monitoring devices is the same as the number of lifting head ropes, and the monitoring devices are respectively fixed on the head rope suspension device for real-time monitoring of the elongation of the suspension cylinder in the head rope suspension device. An electronic control device, electrically connected to the monitoring device, is used to receive information on the elongation of the suspension cylinder monitored by the monitoring device. When the elongation of the suspension cylinder exceeds the cylinder stroke, the electronic control device can issue a warning signal to remind maintenance personnel to adjust the tension of the wire rope in a timely manner. A wireless charging energy storage device is electrically connected to the monitoring device and the electronic control device, and is used to provide power to the monitoring device and the electronic control device.

2. The mine hoist head rope suspension tension imbalance early warning device according to claim 1, characterized in that, The wireless charging energy storage device includes: The transmitting coil is fixed on the derrick and located at the normal stopping position of the hoisting container; A receiving coil is fixed to the top of the lifting container. When the lifting container stops normally, the receiving coil and the transmitting coil are on the same horizontal plane and arranged opposite to each other. The battery is fixed to the top of the lifting container and electrically connected to the receiving coil. The battery is wirelessly charged through the transmitting and receiving coils.

3. The mine hoist head rope suspension tension imbalance early warning device according to claim 2, characterized in that: The distance between the transmitting coil and the receiving coil is no more than 3 cm.

4. The mine hoist head rope suspension tension imbalance early warning device according to claim 2, characterized in that: The battery is a lithium iron phosphate battery.

5. The mine hoist head rope suspension tension imbalance early warning device according to claim 1, characterized in that, The monitoring device includes: The retainer is fixed to the head rope suspension device; A displacement sensor is installed between the head rope suspension device and the piston rod of the suspension cylinder to monitor the position of the piston rod and transmit the monitored position information to the electronic control device.

6. The mine hoist head rope suspension tension imbalance early warning device according to claim 5, characterized in that: The displacement sensor uses a grating ruler, which consists of a scale grating installed in the middle of the holder and a grating reading head fixed to the top of the piston rod by a clamp.

7. The mine hoist head rope suspension tension imbalance early warning device according to claim 6, characterized in that: The upper and lower ends of the cage are respectively equipped with a position detection sensor for limiting the extension and retraction range of the piston rod.

8. The mine hoist head rope suspension tension imbalance early warning device according to claim 5, characterized in that: The retainer is a square frame welded from stainless steel rectangular tubes, which is fixed to the head rope suspension device by clamps.

9. The mine hoist head rope suspension tension imbalance early warning device according to claim 1, characterized in that, The electronic control device includes: The controller is fixed to the top of the lifting container and is electrically connected to the monitoring device. A wireless transmitter is fixed to the top of the lifting container and electrically connected to the controller. After receiving and processing the information transmitted by the monitoring device, the controller transmits the information to the outside through the wireless transmitter. A wireless receiver, installed in the monitoring room, is used to wirelessly receive information transmitted by the wireless transmitter; The notification device is electrically connected to the wireless receiver and is used to display the information transmitted by the wireless receiver.

10. A mine hoist head rope suspension tension imbalance early warning device according to claim 9, characterized in that: The prompting device includes a display for displaying the extension value of the suspension cylinder in real time. When the extension value exceeds a preset value, the display will issue an audible and visual alarm.

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