A monorail crane vehicle anti-runaway device

Abstract

This utility model relates to a runaway prevention device for monorail cranes, belonging to the category of monorail emergency braking equipment. The device includes a monorail crane, a track, and a carrier trolley. Multiple carrier trolleys are mounted on the monorail crane and run on the track. A capture device is located at the front end of the monorail crane and is connected to the monorail crane via a connecting rod. The capture device is mounted on the track via the carrier trolleys. The capture device includes a capture hook, a centrifugal release device, and a brake cylinder. It also includes a lasso and a deceleration mechanism. The lasso is located at the connection end of the deceleration mechanism, and the deceleration mechanism is located above the track. This utility model can prevent runaway of the monorail crane on slopes, providing a safety redundancy for runaway prevention in addition to the crane's braking mechanism. It can also be used on slopes to slow down the monorail crane's running speed. In the event of overspeeding or runaway on the monorail, the lasso engages the capture hook, achieving deceleration and stopping the crane.

Description

Technical Field

[0001] This utility model relates to a runaway prevention device for monorail cranes, which belongs to the category of emergency braking equipment for monorail cranes. Background Technology

[0002] Monorail cranes are auxiliary transportation equipment that run on suspended tracks in underground coal mines. They have advantages such as high carrying efficiency, large carrying capacity, and wide range of cargo types, and are widely used in the coal mine transportation field both domestically and internationally.

[0003] Coal mine underground roadways are complex and varied, and monorail locomotives operate on inclines, declines, and curves. Furthermore, with the increasing demand for coal mine transportation, monorail locomotives are undertaking increasingly heavier loads. Under extreme conditions, locomotives may experience runaway uphill, runaway downhill, or runaway due to overloading, and are also at risk of accidents due to speeding caused by the failure of various protection systems. Existing locomotive braking systems primarily employ two methods: electric motor braking and drive unit braking, which can meet the braking requirements for normal locomotive operation.

[0004] To improve the safety redundancy of locomotives and avoid accidents under extreme conditions, anti-runaway devices are needed for monorail locomotives to provide important protection for their safe operation. Summary of the Invention

[0005] In response to the above problems, This invention provides a runaway prevention device for monorail cranes, which solves the problem of runaway on slopes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model relates to a runaway prevention device for monorail crane vehicles, comprising a monorail crane vehicle, a track, and load-bearing trolleys. The monorail crane vehicle is equipped with multiple load-bearing trolleys, which run on the track. The front end of the monorail crane is equipped with a capture device, which is connected to the monorail crane via a connecting rod. The capture device is set on the track via a carrying trolley. The capture device is equipped with a capture hook, a centrifugal release device and a brake cylinder. The centrifugal release device is equipped with a touch switch. The brake switch is connected to the input terminal of the PLC. The hydraulic output pipe of the hydraulic system is connected to the brake cylinder. The hydraulic output pipe is equipped with a solenoid valve. The control signal of the solenoid valve is connected to the output terminal of the PLC. The front end of the extension rod of the brake cylinder is connected to the capture hook. It also includes a lasso and a deceleration mechanism. The lasso is located at the connection end of the deceleration mechanism, and the deceleration mechanism is located above the track. The lasso is on the movement path of the capture hook when it is lifted to capture.

[0007] The monorail crane anti-runaway device also includes a frame, the rear end of which is connected to the monorail crane via a connecting rod. The frame is equipped with two sets of carrying trolleys, and a brake cylinder fixing frame is provided in the lower middle part of the frame. The lower part of the brake cylinder body is connected to the brake cylinder fixing frame via a pin, and the top of the brake cylinder extension rod is connected to the capture hook via a pin.

[0008] According to the aforementioned anti-runaway device for monorail crane vehicles, the capture hook includes a Y-shaped hook and a lifting frame. The Y-shaped hook is located at one end of the lifting frame, and the other end of the lifting frame is hinged to the frame. The front end of the piston rod of the brake cylinder is connected to the middle position of the lifting frame via a pin.

[0009] According to the aforementioned anti-runaway device for monorail crane vehicles, the deceleration mechanism is a steel belt deceleration mechanism, which includes a steel belt, a steel belt fixing seat, and steel belt compression wheels. The steel belt fixing seat is located above the track, and the steel belt is located on the steel belt fixing seat. The end of the steel belt in the monorail crane's running direction is threaded through a pair of steel belt compression wheels, which are located above the track. The aforementioned sling is located at the front end of the steel belt.

[0010] According to the aforementioned anti-runaway device for monorail cranes, the PLC and hydraulic station are installed in the monorail crane, and the connected circuits and hydraulic pipelines extend to the frame through connecting rods and are connected to the corresponding components.

[0011] This utility model can prevent monorail locomotives from running off track at the ramp position, and provides a safety redundancy against running off track outside the locomotive braking mechanism; This device can also be used on slopes to slow down monorail cranes. When the monorail reaches the speed limit or slips, the cable catches the capture hook to achieve deceleration and stop the crane. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a structural diagram of the capture device of this utility model. Figure 3 This is a diagram of the steel belt braking structure of this utility model. Figure 4 This is a PLC control connection diagram for this utility model.

[0013] Figure label: 1. Lane, 2. Track, 3. Capture device, 4. Linkage rod, 5. Monorail crane, 6. Reduction mechanism, 7. Frame, 8. Centrifugal release device, 9. Brake cylinder, 10. Carrying trolley, 11. Roller, 12. Capture hook, 121. Y-hook, 133. Lifting frame, 13. Lasso, 14. Fixing frame, 15. Extrusion wheel, 16. Connecting cable, 17. Steel belt, 18. Steel belt fixing seat, 19. Solenoid valve, 20. Hydraulic system. Detailed Implementation

[0014] The specific details of this utility model are further described below: This utility model relates to a runaway prevention device for monorail cranes, which is added to an existing monorail crane operating system. The specific monorail crane operating system includes a monorail crane 5, a track 2, and a carrier trolley 10. Multiple carrier trolleys 10 are provided on the monorail crane 5, and the carrier trolleys 10 run on the track 2.

[0015] This device has a capture device 3 at the front end of the monorail crane 5, such as... Figure 1 As shown, the capture device 3 is connected to the monorail crane 5 via a connecting rod 4, and the capture device 3 is mounted on the track 2 via a carrying trolley 10.

[0016] Specifically, such as Figure 2 As shown, the capture device 3 includes a capture hook 12, a centrifugal release device 8, and a brake cylinder 9. The centrifugal release device 8 has rollers mounted on a track. During operation, the rollers contact the track, driving the release mechanism inside the centrifugal release device. A trigger switch is located next to the centrifugal release device 8. The brake switch is connected to the input terminal of the PLC. The hydraulic output pipe of the hydraulic system is connected to the brake cylinder 9. A solenoid valve is installed on the hydraulic output pipe. The control signal of the solenoid valve is connected to the output terminal of the PLC. The front end of the extension rod of the brake cylinder 9 is connected to the capture hook 12.

[0017] A lasso and a deceleration mechanism 6 are installed at the bottom of the inclined tunnel. The lasso is located at the connection end of the deceleration mechanism, and the deceleration mechanism 6 is located above the track 2. The lasso is on the movement path of the capture hook 12 when it is lifted to capture.

[0018] The capture hook is attached to the lasso, and the speed of the capture hook and the monorail crane is reduced by a deceleration mechanism.

[0019] Furthermore, the capture device 3 is mounted on the frame 7. Specifically, the rear end of the frame 7 is connected to the monorail crane 5 via a connecting rod 4. The frame 7 is equipped with two sets of carrying trolleys 10. A brake cylinder fixing frame is located at the lower middle part of the frame 7. The lower part of the cylinder body of the brake cylinder 9 is connected to the brake cylinder fixing frame via a pin. The top of the extension rod of the brake cylinder 9 is connected to the capture hook 12 via a pin.

[0020] Specifically, the capture hook 12 includes a Y-shaped hook and a lifting frame. The Y-shaped hook is located at one end of the lifting frame, and the other end of the lifting frame is hinged to the frame 7. The front end of the piston rod of the brake cylinder 9 is connected to the middle position of the lifting frame through a pin.

[0021] Specifically, the deceleration mechanism 6 of this device is implemented via a steel belt, including a steel belt 17, a steel belt fixing seat 18, and steel belt pressing wheels 15. The steel belt fixing seat 18 is located above the track 2, and the steel belt 17 is mounted on the steel belt fixing seat 18. The end of the steel belt 17 in the monorail's running direction passes through a pair of steel belt pressing wheels 15. The steel belt pressing wheels 15 are located above the track 2, and the aforementioned sling is attached to the front end of the steel belt 17. The steel belt pressing wheels 15 are fixed to the top of the tunnel 1 by a fixing frame 14, and the connecting cable 16 connects the tunnel 1 behind the fixing frame 14 to the fixing frame 14.

[0022] The PLC and hydraulic station are installed in the monorail crane 5, and the connected circuits and hydraulic lines extend to the frame 7 through the connecting rod 4 and are connected to the corresponding components.

[0023] Description of the anti-sports car mechanism of this utility model: (1) When the locomotive is not started, when the purpose of preventing runaway is to extend the piston rod of the brake cylinder under the high pressure oil in the hydraulic oil pipe controlled by PLC, the capture hook is raised and the height position is just enough to be hooked by the lasso. When the locomotive starts, the piston rod retracts under the high pressure oil in the hydraulic oil pipe, the capture hook falls down, and the locomotive runs normally.

[0024] (2) When the locomotive is traveling downhill, the capture hook is lowered during normal travel. When the overspeed brake is applied, the centrifugal release device is working in the overspeed state and touches the brake switch. The brake switch sends a signal to the PLC. The PLC controls the solenoid valve on the hydraulic oil pipe to act, controls the piston rod of the brake cylinder to extend, and lifts the capture hook. The lasso at the bottom of the slope is put on the capture hook. The steel belt is pulled on the steel belt fixing seat and rubs against the steel belt fixing seat and the extrusion wheel, generating plastic deformation and generating resistance, consuming the kinetic energy of the capture hook, frame and monorail locomotive, and achieving the purpose of overspeed capture. (3) Specifically, when the monorail locomotive's operating speed is less than 3m / s, i.e. during normal operation, the capture hook will not be raised, ensuring it remains below the hook of the braking device. When the locomotive's operating speed is detected to be greater than 3m / s, the centrifugal release device will depressurize, and the brake cylinder will raise the capture hook.

[0025] Once the locomotive reaches the coupling position and the coupling is successful, it will slowly and uniformly decelerate until it comes to a stop.

[0026] Main technical parameters 1 Overspeed value (m / s) ≥3 2 Adaptation speed (m / s) ≤12 3 Braking force of a single steel belt (kN) 100 4 Quantity of steel strip (kN) Selected according to the design. 5 Braking distance (m) ≤4

Claims

1. A runaway prevention device for a monorail crane, comprising a monorail crane (5), a track (2), and a carrying trolley (10), wherein multiple carrying trolleys (10) are arranged on the monorail crane (5), and the carrying trolleys (10) run on the track (2). Its characteristics are, The front end of the monorail crane (5) is equipped with a capture device (3), which is connected to the monorail crane (5) through a connecting rod (4). The capture device (3) is set on the track (2) through a carrying trolley (10). The capture device (3) is equipped with a capture hook (12), a centrifugal release device (8) and a brake cylinder (9). The centrifugal release device (8) is equipped with a touch switch. The brake switch is connected to the input terminal of the PLC. The hydraulic output pipe of the hydraulic system is connected to the brake cylinder (9). The hydraulic output pipe is equipped with a solenoid valve. The control signal of the solenoid valve is connected to the output terminal of the PLC. The front end of the extension rod of the brake cylinder (9) is connected to the capture hook (12). It also includes a lasso and a deceleration mechanism (6). The lasso is set at the connection end of the deceleration structure, and the deceleration mechanism (6) is set above the track (2). The lasso is on the movement path of the capture hook (12) when it is lifted to capture.

2. The anti-runaway device for monorail cranes according to claim 1, characterized in that, It also includes a frame (7), the rear end of which is connected to a monorail crane (5) via a connecting rod (4). The frame (7) is equipped with two sets of carrying trolleys (10). A brake cylinder fixing frame is provided in the lower middle part of the frame (7). The lower part of the cylinder body of the brake cylinder (9) is connected to the brake cylinder fixing frame via a pin. The top of the extension rod of the brake cylinder (9) is connected to the capture hook (12) via a pin.

3. The anti-runaway device for monorail cranes according to claim 2, characterized in that, The capture hook (12) includes a Y-shaped hook and a lifting frame. The Y-shaped hook is located at one end of the lifting frame, and the other end of the lifting frame is hinged to the frame (7). The front end of the piston rod of the brake cylinder (9) is connected to the middle position of the lifting frame through a pin.

4. The anti-runaway device for monorail cranes according to claim 1, characterized in that, The deceleration mechanism (6) is a steel belt deceleration mechanism, which includes a steel belt (17), a steel belt fixing seat (18) and a steel belt extrusion wheel. The steel belt fixing seat (18) is set above the track (2), and the steel belt (17) is set on the steel belt fixing seat (18). The end of the steel belt (17) in the monorail running direction is threaded through a pair of steel belt extrusion wheels. The steel belt extrusion wheels are set above the track (2), and the front end of the steel belt (17) is provided with the aforementioned sling.

5. The anti-runaway device for monorail cranes according to claim 4, characterized in that, The PLC and hydraulic station are installed in the monorail crane (5), and the connected circuits and hydraulic pipelines extend to the frame (7) through the connecting rod (4) and are connected to the corresponding components.

6. The anti-runaway device for monorail cranes according to claim 4, characterized in that, The steel belt (17) and the extrusion wheel (15) are fixed to the top of the roadway (1) by the fixing frame (14), and the connecting cable (16) connects the roadway (1) behind the fixing frame (14) to the fixing frame (14).

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