Coal mine overhead man car steel wire rope running state monitoring and protecting device
By installing the forward and reverse lock brake assembly and sensor monitoring and protection devices on the overhead vehicle, the problem of the inability to effectively control the wire rope is solved, and segmented monitoring and multi-point braking are realized to ensure safe operation.
Patent Information
- Application Number
- CN202422638947.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-31
AI Technical Summary
When existing overhead vehicles are stalled, reversed or wire rope breaks, although the drive system can brake in time, the wire rope cannot be effectively controlled, resulting in the risk of personnel slipping and falling, threatening the safety of operators.
The monitoring and protection device consisting of a forward and reverse lock brake assembly, sensor and controller is adopted to detect the wire rope status through the sensor. The controller controls the lock brake assembly to quickly brake in abnormal situations, realizing segmented monitoring and multi-point braking.
It can stop the car in time to prevent the accident from expanding, reduce the risk of injury to personnel, and ensure safe operation.
Smart Images
Figure CN223279095U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coal mine transportation, and in particular relates to a coal mine overhead car wire rope running state monitoring and protection device. Background Art
[0002] The overhead manlift is a conveying equipment used to transport personnel in inclined shafts and flat tunnels of coal mines.
[0003] Due to long-term operation, overhead man-lifts may cause serious accidents such as stalling, reversing, rope derailment and rope breakage due to various reasons. Overhead man-lifts usually have protection functions such as overrun, overspeed, underspeed, rope drop, tension drop, and emergency stop by pulling the rope along the line. When a fault occurs, the system will stop running automatically.
[0004] However, these protections only apply timely braking and stopping to the vehicle-driven system in the event of a fault. However, they cannot guarantee braking and stopping of the running wire rope or chairlift. For example, in the event of a stall, reverse, or wire rope break, even if the drive wheels are braked to a stop, the stalled wire rope, without effective control, will continue to descend, potentially leading to a serious accident and the risk of personnel falling. This poses a serious threat to the safety of workers, negatively impacting coal mine safety and society, and represents a technical issue and safety hazard that needs to be addressed urgently. Utility Model Content
[0005] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a coal mine overhead traveling vehicle wire rope running state monitoring and protection device.
[0006] The utility model adopts the following technical solution: a coal mine overhead crane wire rope running status monitoring and protection device, including a forward locking brake assembly, a reverse locking brake assembly, a sensor, a controller and a locking brake assembly mounting plate; the sensor is arranged on the rope supporting wheel for detecting the running status of the wire rope; the controller is connected with the sensor, the forward locking brake assembly and the reverse locking brake assembly; the locking brake assembly mounting plate is fixed to the rope supporting wheel frame with bolts and connected to the anchor rod driven on the tunnel roof, the forward locking brake assembly and the reverse locking brake assembly are installed on the locking brake assembly mounting plate, and the forward locking brake assembly or the reverse locking brake assembly locks the wire rope and the chair rope clamp at the corresponding position based on the control signal of the controller.
[0007] Preferably, the forward locking brake assembly includes a trapezoidal upper groove, a trapezoidal lower groove, an upper wedge-shaped brake block, a lower wedge-shaped brake block, a brake block spring and an electric locking pin; the trapezoidal upper groove and the trapezoidal lower groove are arranged on the locking brake assembly mounting plate, the upper wedge-shaped brake block is slidingly connected to the trapezoidal upper groove through the brake block spring, and the trapezoidal lower groove is slidingly connected to the lower wedge-shaped brake block through the brake block spring, and electric locking pins are provided in the trapezoidal upper groove and the trapezoidal lower groove, and the electric locking pin is used to limit the head of the upper wedge-shaped brake block or the lower wedge-shaped brake block, and the electric locking pin is connected to the controller; the upper wedge brake block and the lower wedge brake block can form a space for the wire rope to pass through or clamp.
[0008] Preferably, an upper sliding clip for guiding the sliding of the upper wedge-shaped brake block is provided in the trapezoidal upper groove, and a lower sliding clip for guiding the sliding of the lower wedge-shaped brake block is provided in the trapezoidal lower groove.
[0009] Preferably, the parts of the upper wedge-shaped brake block and the lower wedge-shaped brake block that are in contact with the wire rope are embedded with high-resistance and wear-resistant material pads.
[0010] Preferably, the tails of the upper wedge-shaped brake block and the lower wedge-shaped brake block are both provided with brake block reset pull rings.
[0011] Preferably, the reverse locking brake assembly has the same structure as the forward locking brake assembly, and is installed in opposite directions on the locking brake assembly mounting plate, so that they are symmetrically installed.
[0012] Preferably, a locking brake assembly fixing seat is anchored at the tunnel roof, and the upper end of the locking brake assembly mounting plate is connected to the locking brake assembly fixing seat through a fixed connecting rod.
[0013] Preferably, the sensor is a Hall element, which detects the running speed and running direction of the wire rope.
[0014] Preferably, a sensor is installed on each of the two rope support wheels at both ends of the locking brake assembly mounting plate. The two sensors detect the running status of the wire rope at that position, and the electric locking pin installed at the locking brake assembly mounting plate operates based on the detection information of the above two sensors.
[0015] Preferably, several coal mine overhead car wire rope operation status monitoring and protection devices are arranged at intervals along the wire rope and share a controller; the input side of the controller is connected to the maintenance test switch and all sensors, and the output side of the controller is connected to all electric lock pins, overhead car controllers and alarms.
[0016] Compared with the prior art, the beneficial effects of the present invention are:
[0017] This device can monitor in sections, brake at multiple points and protect the whole line. If abnormal operation is detected, multiple points will quickly brake at the same time, and each braking point will be controlled at the same time. In this way, no matter it is a forward stall or reverse, or no matter where the rope is broken, it can stop the loss in time to prevent the accident from expanding, avoid personal injury and minimize the danger. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 1 is a schematic diagram of the installation of the overall structure of this embodiment;
[0020] Figure 2 Schematic diagram of the forward locking brake assembly and the reverse locking brake assembly of this embodiment;
[0021] Figure 3 2 is a front view of the forward locking brake assembly of this embodiment;
[0022] Figure 4 is a side view of the reverse locking brake assembly of this embodiment;
[0023] Figure 5 2 is a control schematic diagram of this embodiment;
[0024] Figure 6 Schematic diagram of the installation position of this embodiment.
[0025] In the figure: 101- trapezoidal upper groove; 102- trapezoidal lower groove; 103- upper wedge-shaped brake block; 104- lower wedge-shaped brake block; 105- brake block spring; 106- electric locking pin; 107- upper slide card; 108- lower slide card; 109- high resistance wear-resistant material lining; 110- brake block reset pull ring; 2- sensor; 3- controller; 4- locking brake assembly mounting plate; 5- locking brake assembly fixing seat; 6- fixed connecting rod; 7- steel wire rope; 8- rope pulley; 9- chairlift rope gripper; 10- chairlift rod; 11- overhead man-car driving wheel; 12- overhead man-car controller; 13- overhead man-car driving inverter; 14- tunnel roof; 15- rope pulley fixing beam; 16- chairlift tail wheel. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.
[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by the present invention, should fall within the scope of the technical content disclosed by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.
[0028] The present invention provides an embodiment:
[0029] like Figures 1 to 6 As shown, a coal mine overhead traveling vehicle wire rope running status monitoring and protection device includes a forward locking brake assembly, a reverse locking brake assembly, a sensor 2, a controller 3 and a locking brake assembly mounting plate 4; the sensor 2 is arranged on the rope support pulley for detecting the running status of the wire rope; the controller 3 is connected to the sensor 2, the forward locking brake assembly, and the reverse locking brake assembly; the locking brake assembly mounting plate 4 is connected to the tunnel roof, and the forward locking brake assembly and the reverse locking brake assembly are installed on the locking brake assembly mounting plate 4. The forward locking brake assembly or the reverse locking brake assembly locks the wire rope and the chair rope gripper at the corresponding position based on the control signal of the controller 3.
[0030] In this embodiment, the forward locking brake assembly includes a trapezoidal upper groove 101, a trapezoidal lower groove 102, an upper wedge-shaped brake block 103, a lower wedge-shaped brake block 104, a brake block spring 105 and an electric locking pin 106; the trapezoidal upper groove 101 and the trapezoidal lower groove 102 are arranged on the locking brake assembly mounting plate 4, the upper wedge-shaped brake block 103 is slidingly connected to the trapezoidal upper groove 101 through the brake block spring 105, and the trapezoidal lower groove 102 is slidingly connected to the lower wedge-shaped brake block 104 through the brake block spring 105, and an electric locking pin 106 is provided in the trapezoidal upper groove 101 and the trapezoidal lower groove 102. The electric locking pin 106 is used to limit the head of the upper wedge-shaped brake block 103 or the lower wedge-shaped brake block 104, and the electric locking pin 106 is connected to the controller 3; the upper wedge-shaped brake block 103 and the lower wedge-shaped brake block 104 can form a space for the wire rope to pass through or clamp.
[0031] The trapezoidal upper groove 101 is equipped with an upper sliding catch 107 to guide the sliding of the upper wedge-shaped brake block 103, and the trapezoidal lower groove 102 is equipped with a lower sliding catch 108 to guide the sliding of the lower wedge-shaped brake block 104. The portions of the upper and lower wedge-shaped brake blocks 103 and 104 that come into contact with the wire rope are embedded with high-resistance and wear-resistant material liners 109. The tails of the upper and lower wedge-shaped brake blocks 103 and 104 are both equipped with brake block reset pull rings 110.
[0032] The reverse locking brake assembly shares the same structure as the forward locking brake assembly and is installed symmetrically on the locking brake assembly mounting plate 4 in opposite directions. A locking brake assembly mounting base 5 is anchored to the tunnel roof. The upper end of the locking brake assembly mounting plate 4 is connected to the locking brake assembly mounting base 5 via a fixed link 6.
[0033] The sensor 2 is a Hall element, which detects the running speed and running direction of the wire rope; the controller is an IC controller.
[0034] Control principle:
[0035] Under normal circumstances, the upper and lower wedge-shaped brake blocks 103 and 104 are locked in place by the electric locking pin 106. The gap between the upper and lower wedge-shaped brake blocks is just enough to allow the traction wire rope and the chairlift's cable grip to pass smoothly, ensuring the normal operation of the monkey car. The brake springs in the brake blocks are compressed, preparing for cable-gripping braking. To ensure that the brake blocks can quickly grip the cable and apply braking, high-resistance, wear-resistant material pads are embedded in the contact area between the brake blocks and the cable to enhance braking effectiveness.
[0036] If the monkey car overspeeds and loses control, reverses, or the rope breaks and runs away, the sensor will send the detected signal to the controller, which will immediately issue a braking command, and its output relay will immediately operate to sound an alarm, and the electric lock pin will open. At this time, the upper and lower wedge-shaped brake blocks lose their blocking resistance and slide forward and close rapidly under the strong push of the brake block spring 105. Under the combined force of the spring, wedge-shaped groove, and brake block friction resistance, the stalled wire rope is clamped and locked, bringing the monkey car to a stop and preventing the accident from escalating.
[0037] Because the rope brake is a wedge-shaped structure, braking is directional. A forward-locking brake assembly only brakes the vehicle in the forward direction. If the vehicle reverses, even if the forward-locking brake assembly is activated, it will not be able to clamp the wire rope and apply the brake. Therefore, to prevent accidents caused by the vehicle's reverse rotation due to slippage or loss of control due to a broken wire rope, a certain number of reverse-locking brake assemblies must be installed along the vehicle's route.
[0038] To improve the reliability of detection data, a sensor 2 is installed on each of the two rope support pulleys at either end of the locking and brake assembly mounting plate 4. These two sensors 2 detect the running status of the wire rope at that location and transmit the detected data to the IC controller, which processes the data and determines whether to apply the brake. The electric locking pin 106 installed on the locking and brake assembly mounting plate 4 operates based on the detection information from these two sensors 2.
[0039] Specifically, when two sensors 2 simultaneously detect that the monkey car is speeding by more than 30% and lasts for more than 3-5 seconds, the controller determines that the monkey car is in an out-of-control fault state and immediately issues a rope braking command. The electric locking pin of the forward locking brake assembly opens, and the forward locking brake assembly immediately brakes the rope, clamping the wire rope tightly to control the wire rope from continuing to speed.
[0040] When two sensors 2 simultaneously detect that the monkey car has reversed and the duration is greater than 3-5S (not when set by the maintenance worker), the controller determines that the monkey car is in an out-of-control fault state and immediately issues a rope braking command. The electric locking pin of the reverse locking brake assembly opens, and the reverse locking brake assembly immediately brakes the rope, clamping the wire rope tightly to control the wire rope to continue to overspeed or reverse.
[0041] After the cable brake device takes protective action, it is necessary to manually pull the brake block reset pull ring 110 on the brake block to pull back the upper and lower wedge-shaped brake blocks respectively. The upper and lower wedge-shaped brake blocks are clamped by the electric locking pin to allow the traction wire rope and the chairlift cable device to pass smoothly. Only when the protective device and wire rope are checked to be intact can the normal operation of the monkey car be restored.
[0042] Several coal mine overhead car wire rope operation status monitoring and protection devices are arranged at intervals along the wire rope and share a controller 3; the input side of the controller 3 is connected to the maintenance test switch and all sensors 2, and the output side of the controller 3 is connected to all electric locking pins 106, the overhead car controller and the alarm.
[0043] When the overhead man-carriage is being inspected and debugged, in order to prevent the changes in the operation of the wire rope from causing the monitoring and protection device to malfunction and affect the inspection and maintenance, the main power switch (inspection and test switch) of the monitoring and protection device can be operated to cut off its power supply.
[0044] This project is based on the original protection function of the overhead man-carrying vehicle, and adds a protection device that can realize automatic online detection of the running status of the wire rope and automatic rope-holding braking to prevent the wire rope (monkey car) from stalling, reversing, or breaking and stringing. The device can be installed at intervals of 100-300 meters according to the actual length and slope of the overhead man-carrying vehicle, realizing segmented monitoring, multi-point braking, and full-line force. When the overhead man-carrying vehicle stalls, reverses, breaks the rope, etc., it can quickly brake the wire rope and the hanging chair to stop, ensuring the safety of passengers and equipment.
[0045] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A coal mine overhead traveling vehicle wire rope running status monitoring and protection device, characterized by: It includes a forward locking brake assembly, a reverse locking brake assembly, a sensor (2), a controller (3) and a locking brake assembly mounting plate (4); A sensor (2) is arranged on the rope support wheel and is used to detect the running state of the wire rope; a controller (3) is connected to the sensor (2), the forward locking brake assembly, and the reverse locking brake assembly; a locking brake assembly mounting plate (4) is fixed to the rope support wheel frame with bolts and is connected to an anchor rod set on the tunnel roof; the forward locking brake assembly and the reverse locking brake assembly are mounted on the locking brake assembly mounting plate (4); the forward locking brake assembly or the reverse locking brake assembly locks the wire rope and the chairlift rope gripper at the corresponding position based on the control signal of the controller (3).
2. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 1 is characterized in that: The positive locking brake assembly comprises a trapezoidal upper groove (101), a trapezoidal lower groove (102), an upper wedge-shaped brake block (103), a lower wedge-shaped brake block (104), a brake block spring (105) and an electric lock pin (106); The trapezoidal upper groove (101) and the trapezoidal lower groove (102) are arranged on the locking brake assembly mounting plate (4); the upper wedge-shaped brake block (103) is slidably connected to the trapezoidal upper groove (101) via a brake block spring (105); the trapezoidal lower groove (102) is slidably connected to the lower wedge-shaped brake block (104) via a brake block spring (105); an electric lock pin (106) is provided in each of the trapezoidal upper groove (101) and the trapezoidal lower groove (102); the electric lock pin (106) is used to limit the head of the upper wedge-shaped brake block (103) or the lower wedge-shaped brake block (104); and the electric lock pin (106) is connected to the controller (3); The upper wedge-shaped brake block (103) and the lower wedge-shaped brake block (104) can form a space for the wire rope to pass through or be clamped.
3. The coal mine overhead traveling vehicle wire rope operation status monitoring and protection device according to claim 2 is characterized in that: An upper sliding card (107) for guiding the sliding of an upper wedge-shaped brake block (103) is provided in the trapezoidal upper groove (101), and a lower sliding card (108) for guiding the sliding of a lower wedge-shaped brake block (104) is provided in the trapezoidal lower groove (102).
4. The coal mine overhead traveling vehicle wire rope operation status monitoring and protection device according to claim 2, characterized in that: High-resistance wear-resistant material linings (109) are embedded in the parts of the upper wedge-shaped brake block (103) and the lower wedge-shaped brake block (104) that are in contact with the steel wire rope.
5. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 4 is characterized in that: The tails of the upper wedge-shaped brake block (103) and the lower wedge-shaped brake block (104) are both provided with brake block reset pull rings (110).
6. A coal mine overhead travelling vehicle wire rope running status monitoring and protection device according to any one of claims 1 to 5, characterized in that: The reverse locking brake assembly has the same structure as the forward locking brake assembly, and the mounting directions on the locking brake assembly mounting plate (4) are opposite, so the mounting is symmetrical.
7. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 6, characterized in that: A locking brake assembly fixing seat (5) is anchored at the tunnel roof, and the upper end of the locking brake assembly mounting plate (4) is connected to the locking brake assembly fixing seat (5) via a fixed connecting rod (6).
8. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 7, characterized in that: The sensor (2) is a Hall element, which detects the running speed and running direction of the wire rope.
9. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 8, characterized in that: A sensor (2) is installed on each of the two rope support wheels at both ends of the locking brake assembly mounting plate (4). The two sensors (2) detect the running state of the wire rope at the position, and the electric locking pin (106) installed at the locking brake assembly mounting plate (4) operates based on the detection information of the two sensors (2).
10. The coal mine overhead traveling vehicle wire rope running status monitoring and protection device according to claim 9, characterized in that: Several coal mine overhead car wire rope operation status monitoring and protection devices are arranged at intervals along the wire rope and share a common controller (3); the input side of the controller (3) is connected to a maintenance test switch and all sensors (2), and the output side of the controller (3) is connected to all electric lock pins (106), the overhead car controller and the alarm.