Centrifugal releaser speed measuring device for monorail crane

Abstract

The utility model relates to a centrifugal releaser speed measuring device for a monorail crane, and belongs to the field of monorail crane centrifugal releaser detection. According to the technical scheme, the device comprises a box body, a steel wire flexible shaft, a connector, a pneumatic motor, a direct-current power supply, a speed sensor and a digital display tachometer, the digital display tachometer is arranged on the surface of the box body, a steel wire flexible shaft is arranged in an opening in the end part of the box body, and a connector is arranged at the end part of the steel wire flexible shaft and is connected with the centrifugal releaser for the monorail crane; a pneumatic motor, a direct-current power source and a speed sensor are arranged in the box body, an air inlet and an air outlet of the pneumatic motor penetrate through the box body to be connected with a high-pressure air source, the output end of the pneumatic motor is connected to the steel wire flexible shaft, the output end is further provided with the speed sensor to measure the output rotating speed, and the power source supplies power to the speed sensor and the digital display tachometer. The device is applied to daily inspection of the centrifugal releaser, can effectively monitor effectiveness of overspeed centrifugal braking, and avoids overspeed braking failure caused by structural faults.

Description

Technical Field

[0001] The utility model patent relates to a speed measuring device for a centrifugal release of a single rail hoist locomotive, belonging to the field of detection of a centrifugal release of a single rail hoist locomotive. Background Art

[0002] A single rail hoist locomotive runs on a suspension track at the top of an underground roadway in a mine, and is an auxiliary transportation equipment that combines the operations of transporting people and goods. The running speed is an important performance parameter of the single rail hoist locomotive, which is directly related to the transportation efficiency and running safety of the locomotive. At present, the single rail hoist locomotive mainly uses a centrifugal release to achieve overspeed protection of the locomotive. When the speed exceeds the maximum speed of the locomotive, the centrifugal release triggers the control system to realize the deceleration and braking of the locomotive, ensuring the running safety of the single rail hoist locomotive. The setting of the speed by the centrifugal release directly affects the maximum running speed of the single rail hoist locomotive. Therefore, how to effectively detect the set speed of the centrifugal release is of great significance.

[0003] The centrifugal release is a commonly used mechanical overspeed protection device for single rail hoist locomotives at present. The daily inspection and adjustment of the centrifugal release mostly focus on its own structure and function, and its detection device is rarely seen. However, the reliable operation of the centrifugal release directly affects the safety of the operation of the single rail hoist locomotive. Summary of the Utility Model

[0004] In view of the above problems, the utility model designs a speed measuring device for a centrifugal release of a single rail hoist locomotive to solve the problem of reliable detection of overspeed centrifugal braking of a single rail hoist.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A speed measuring device for a centrifugal release of a single rail hoist locomotive includes a box body, a wire soft shaft, a connector, a pneumatic motor, a DC power supply, a speed sensor and a digital display tachometer;

[0007] The digital display tachometer is arranged on the surface of the box body, and a wire soft shaft is arranged through an opening at the end of the box body. A connector is arranged at the end of the wire soft shaft and is connected to the centrifugal release of the single rail hoist locomotive;

[0008] The pneumatic motor, the DC power supply and the speed sensor are arranged inside the box body. The air inlet and outlet of the pneumatic motor pass through the box body and are connected to a high-pressure air source. The output end of the pneumatic motor is connected to the wire soft shaft, and the speed sensor is also arranged at the output end to measure the output speed. The power supply provides power for the speed sensor and the digital display tachometer, and the digital display tachometer is connected to the speed sensor to display the speed.

[0009] According to the centrifugal release speed measuring device for monorail hoist locomotives, handles are provided on both sides of the box body, the digital display tachometer is provided on the top, the wire soft shaft penetrates through the front end face through a hole, and the air inlet and outlet connecting pipes of the starting motor are provided through holes on the rear end face.

[0010] According to the centrifugal release speed measuring device for monorail hoist locomotives, the box body includes a lower shell, end shells and an upper shell. The cross-section of the lower shell is U-shaped, the upper shell is provided on the top and fixed by bolts, end shells are provided at both ends, and the digital display tachometer is installed through a hole on the upper shell.

[0011] According to the centrifugal release speed measuring device for monorail hoist locomotives, a throttle valve and an adjustment knob are provided on the input pipeline of the starting motor, and the opening degree of the throttle valve is adjusted by rotating the adjustment knob.

[0012] According to the centrifugal release speed measuring device for monorail hoist locomotives, a fixed frame is provided inside the box body, the starting motor is placed on the fixed frame, a matching U-shaped fixing plate is provided above the fixed frame to hold the pneumatic motor, and bolts are used to fix between the U-shaped fixing plate and the fixed frame.

[0013] According to the centrifugal release speed measuring device for monorail hoist locomotives, a speed measuring wheel is provided on the output shaft of the pneumatic motor, and the speed sensor is provided on the side of the speed measuring wheel to measure the rotation speed of the speed measuring wheel.

[0014] According to the centrifugal release speed measuring device for monorail hoist locomotives, a pair of handles are provided on both side faces of the box body, and a switch is provided on one side of the end to control the on-off of the DC power supply.

[0015] This device is applied to the daily inspection and adjustment of centrifugal releases, can effectively monitor the effectiveness of overspeed centrifugal braking, and avoid the failure of overspeed braking caused by structural failures. The centrifugal release speed measuring device designed by the utility model has the advantages of simple structure, stable reliability, low cost, etc. At the same time, it is also applicable to the detection of other equipment equipped with centrifugal releases. Brief Description of the Drawings

[0016] Figure 1 is the side view of the utility model,

[0017] Figure 2 is the top view of the utility model,

[0018] Figure 3 is the Figure 2 sectional view taken along the S direction in the utility model,

[0019] Reference Signs:

[0020] 1. Box body, 101. Upper shell, 102. Lower shell, 103. End shell, 2. Switch, 3. Handle, 4. Shell bolt, 5. Digital tachometer, 6. Air source interface, 7. DC power supply, 8. Adjusting knob, 9. Throttle valve, 10. Starting motor, 11. Fixed bracket, 12. U-shaped fixing plate, 13. Internal bolt, 14. Speed sensor, 15. Tachogenerator wheel, 16. Flexible wire shaft, 17. Connector. Detailed implementation mode

[0021] The following is a detailed description of the specific content of the present utility model:

[0022] The speed measuring device of the centrifugal release for the single-track hoist locomotive of the present utility model detects the centrifugal release of the single-track hoist locomotive for overspeed braking to ensure its normal operation state.

[0023] Specifically, as Figure 1 shown, it includes a box body 1, a flexible wire shaft 16, a connector 17, a pneumatic motor 10, a DC power supply 7, a speed sensor 14 and a digital tachometer 5. The starting motor drives the flexible wire shaft 16 and the connector 17 to rotate. The connector 17 is connected to the centrifugal overspeed release. When the centrifugal overspeed release reaches the target speed, the centrifugal overspeed release releases the brake. At this time, read the reading of the digital tachometer 5 to determine whether the centrifugal overspeed meets the overspeed standard.

[0024] The box body 1 includes a lower shell, an end shell and an upper shell. The cross-section of the lower shell is U-shaped. The upper shell is arranged on the top and fixed by bolts. End shells are arranged at both ends. An opening is made in the upper shell of the box body 1 to install the digital tachometer 5. Handles 3 are arranged on both sides of the box body 1. An opening is made in the front end face to pass through the flexible wire shaft 16, and an air inlet and outlet connecting pipe of the pneumatic motor 10 is arranged through an opening in the rear end face. A connector 17 is arranged at the end of the flexible wire shaft 16 and is connected to the centrifugal release of the single-track hoist locomotive.

[0025] The pneumatic motor 10, the DC power supply 7 and the speed sensor 14 are arranged inside the box body 1. The air inlet and outlet of the pneumatic motor 10 pass through the box body 1 and are connected to a high-pressure air source. The output end of the pneumatic motor 10 is connected to the flexible wire shaft 16. The speed sensor 14 is also arranged at the output end to measure the output speed. The power supply provides power for the speed sensor 14 and the digital tachometer 5. The digital tachometer 5 is connected to the speed sensor 14 to display the speed.

[0026] A fixed bracket 11 is arranged inside the box body 1. The pneumatic motor 10 is placed on the fixed bracket 11. A matching U-shaped fixing plate is arranged above the fixing to hold the pneumatic motor 10. An internal bolt is arranged between the U-shaped fixing plate and the fixed bracket 11 for fixing. A tachogenerator wheel 15 is arranged on the output shaft of the pneumatic motor 10. The speed sensor 14 is arranged on the side of the tachogenerator wheel 15 to measure the rotational speed of the tachogenerator wheel 15.

[0027] A throttle valve 9 and an adjusting knob 8 are provided on the input pipeline of the pneumatic motor 10 to adjust the opening degree of the throttle valve 9 by rotation. A switch 2 is provided on one side of the end of the box body 1 to control the on / off of the DC power supply 7.

[0028] The usage process of this device:

[0029] 1). Preparation work: Ensure that the speed wheel to be measured on the single-track hoist locomotive has been disengaged from the track, check whether the connections of all parts are firm. After checking that the throttle valve is in the closed state, connect the air inlet and outlet to the high-pressure air source and introduce clean and dry compressed air.

[0030] 2). Power-on inspection: Turn on the power switch on the device. The numbers on the digital meter light up. Gradually adjust the adjusting knob of the throttle valve to let the device run idly for 3 - 5 seconds. After checking that the digital display tachometer shows normal, turn off the adjusting knob of the throttle valve.

[0031] 3). Testing: Align the hexagon head on the flexible wire shaft with the hexagon hole at the center of the centrifugal release. Gradually open the adjusting knob of the throttle valve to increase the speed step by step, driving the centrifugal release to rotate. Observe the speed shown on the digital display tachometer when the centrifugal release action can make the toggle block move and record it.

[0032] 4). Close the air source, turn off the device power, remove the flexible shaft and air pipe, and put the tools in the box. It's done.

[0033] This device is applied to the daily inspection and adjustment of the centrifugal release, can effectively monitor the effectiveness of the overspeed centrifugal braking, and avoid the overspeed braking failure caused by structural faults. The centrifugal release speed measuring device designed by the utility model has the advantages of simple structure, stable reliability, low cost, etc. At the same time, it is also applicable to the detection of other devices equipped with centrifugal releases.

Claims

1. A speed measuring device for a centrifugal release of a single-rail hoist locomotive, characterized in that, It includes a box body (1), a flexible wire shaft (16), a connector (17), a pneumatic motor (10), a DC power supply (7), a speed sensor (14) and a digital display tachometer (5); The digital display tachometer (5) is arranged on the surface of the box body (1). An opening is made at the end of the box body (1) for the flexible wire shaft (16). The end of the flexible wire shaft (16) is provided with a connector (17) which is connected to the centrifugal release of the single-track hoist locomotive; The box body (1) is internally provided with a pneumatic motor (10), a DC power supply (7) and a speed sensor (14). The air inlet and outlet of the pneumatic motor (10) pass through the box body (1) and are connected to a high-pressure air source. The output end of the pneumatic motor (10) is connected to the flexible wire shaft (16). The speed sensor (14) is also arranged at the output end to measure the output speed. The power supply provides power for the speed sensor (14) and the digital display tachometer (5). The digital display tachometer (5) is connected to the speed sensor (14) to display the speed.

2. The centrifugal release speed measuring device for a single-rail hoist locomotive according to claim 1, characterized in that, Handles (3) are arranged on both sides of the box body (1), and the digital display tachometer (5) is arranged on the top. An opening is made on the front end face for the flexible wire shaft (16) to pass through, and an air inlet and outlet connecting pipe of the pneumatic motor (10) is arranged through an opening on the rear end face.

3. The centrifugal release speed measuring device for a single-rail hoist locomotive according to claim 2, characterized in that, The box body (1) includes a lower shell, end shells and an upper shell. The cross-section of the lower shell is U-shaped. The upper shell is arranged on the top and fixed by bolts. End shells are arranged at both ends. An opening is made on the upper shell for installing the digital display tachometer (5).

4. The speed measurement device for the centrifugal release of the single-rail hoist locomotive according to claim 2, characterized in that, A throttle valve (9) and an adjusting knob (8) are arranged on the input pipeline of the pneumatic motor (10), and the opening degree of the throttle valve (9) is adjusted by rotating the adjusting knob.

5. The centrifugal release speed measuring device for a single-rail hoist locomotive according to claim 1, characterized in that A fixing frame (11) is arranged inside the box body (1). The pneumatic motor (10) is placed on the fixing frame (11). A U-shaped fixing plate is arranged on the upper part of the fixing frame to hold the pneumatic motor (10) in cooperation, and internal bolts are arranged between the U-shaped fixing plate and the fixing frame (11) for fixation.

6. The speed measuring device of the centrifugal release for the single-rail hoisting locomotive according to claim 1, characterized in that, A speed measuring wheel (15) is arranged on the output shaft of the pneumatic motor (10), and the speed sensor (14) is arranged on the side of the speed measuring wheel (15) to measure the rotational speed of the speed measuring wheel (15).

7. The speed measuring device of the centrifugal release for the single-rail hoist locomotive according to claim 1, characterized in that, A pair of handles (3) are arranged on both side faces of the box body (1), and a switch (2) is arranged on one side of the end for controlling the on-off of the DC power supply (7).

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