CN115649225B - A railway electric intelligent anti-slip fastener - Google Patents

Abstract

The invention discloses a railway electric intelligent anti-slip fastener, comprising: a hook, a tension sensor, a thrust bearing, a lead screw, a sensor box cover, a sensor box body, a nut, a tension hook, a bearing, a first steering gear, a second steering gear, a steering gear box body, a sleeve, a first driving gear, a second driving gear, a driven gear, a battery, a steering gear box cover, a circuit board, a transparent button switch, and an indicator light; the right end of the lead screw is fixedly connected with a driven gear; the tension hook is hinged with the nut; the circuit board is respectively connected with the button switch, the indicator light, the battery, the first steering gear, the second steering gear and the tension sensor; the circuit board comprises a buzzer, a communication expansion interface, a power management module, a tension acquisition module, a first steering gear control module, a second steering gear control module and a microprocessor. The invention has the function of electric placement and removal, reduces the labor intensity of manual placement and removal of the intelligent anti-slip fastener, improves the operation efficiency, and reduces the safety risk of on-site operation in railway stations.

Description

A railway electric intelligent anti-slip fastener

Technical Field

The invention relates to the field of railway vehicle anti-slipping, in particular to a railway electric intelligent anti-slipping fastener.

Background Art

The purpose of the anti-slip fastener is to tighten the brake chain of the vehicle's manual brake mechanism so that the brake shoe is close to the wheel tread, thereby preventing the vehicle parked on the track from slipping away. The anti-slip fastener plays a vital role in preventing safety accidents such as derailment, switch jamming and collision caused by vehicle slipping away.

At present, the installation and removal of the fastener is done by manually using a crank to rotate the fastener screw in the forward and reverse directions to tighten or loosen the vehicle's manual brake chain. Railway industry standards stipulate that the axial tension generated by the fastener on the manual brake during the anti-skid process should be within a range. Operators use their experience to judge whether the tension of traditional fasteners meets the standard, and there is a possibility of anti-skid failure. The intelligent fastener can prompt on-site operators whether the tension meets the standard, and provide a remote monitoring function for the tension value, so that operators can remotely detect tension anomalies and solve them on site. However, there is still the problem of time-consuming and labor-intensive manual installation and removal of fasteners, and the abnormal tension of the manual brake chain cannot be automatically processed after it is discovered. It takes a certain amount of time for operators to walk to the site to deal with it, and there is a risk of vehicle skidding during the manual processing delay period.

Chinese invention patent disclosures CN109724737A, CN112776850A, CN112504528A, CN107621323A and utility model patent disclosures CN207850578U all disclose an intelligent fastener that realizes on-site tension compliance prompts and remote tension value monitoring functions, but none of them realizes electric placement and removal of the fastener, and none of them realizes automatic adjustment of the tension value.

Summary of the invention

The purpose of the present invention is to provide a railway electric intelligent anti-slip fastener, which can realize the electric placement and removal of the anti-slip fastener, save manpower, and can automatically monitor and adjust the tension value within a specified range, which is safe and convenient to use.

A railway electric intelligent anti-slip fastener, comprising: a hook, a tension sensor, a thrust bearing, a lead screw, a sensor box cover, a sensor box body, a nut, a tension hook, a bearing, a first steering gear, a second steering gear, a steering gear box body, a sleeve, a first driving gear, a second driving gear, a driven gear, a battery, a steering gear box cover, a circuit board, a transparent button switch, and an indicator light;

The hook, the tension sensor, the thrust bearing and the lead screw are fixedly connected in sequence;

The tension sensor is located in the sensor box body, and the sensor box cover is connected to the sensor box body;

The nut is threadedly connected to the lead screw, and a driven gear is fixedly connected to the right end of the lead screw; the tension hook is hinged to the nut;

The left end of the sleeve is fixedly connected to the right end of the sensor box body, and the right end of the sleeve is fixedly connected to the left end of the steering gear box body. The sleeve is sleeved outside the thrust bearing, the lead screw and the nut. The front and rear walls of the sleeve are respectively provided with a long hole, and the tension hook passes through one of the long holes of the sleeve;

The first servo, the second servo, the battery and the circuit board are installed in the servo box, the servo box is fixedly connected to the lead screw through the bearing, and the servo box cover is installed on the servo box; the bearing and the thrust bearing are coaxial; the push button switch is installed on the outer wall of the servo box, and the indicator light is installed behind the push button switch;

The first driving gear is fixedly connected to the output shaft of the first steering gear; the second driving gear is fixedly connected to the output shaft of the second steering gear; the first driving gear and the second driving gear are respectively meshed with the driven gear, and the central axes of the first driving gear, the second driving gear and the driven gear are located in the same plane and are parallel to each other;

The circuit board is respectively connected with the button switch, indicator light, battery, first servo, second servo and tension sensor; the circuit board includes a buzzer, a communication expansion interface, a power management module, a tension acquisition module, a first servo control module, a second servo control module and a microprocessor.

The buzzer is connected to the microprocessor and is used to emit sound to prompt the working status of the fastener and alarm.

The communication expansion interface is connected to the microprocessor and is used for externally connecting a wireless communication module to send working status and anti-slip abnormality alarm information to a ground monitoring center, and receive tightening and loosening control commands from the ground monitoring center.

The power management module is connected to the microprocessor, the first steering gear and the second steering gear respectively.

The tension collection module is connected to the microprocessor and the tension sensor respectively.

The first steering gear control module is connected to the microprocessor and the first steering gear respectively; the second steering gear control module is connected to the microprocessor and the second steering gear respectively.

The microprocessor adopts STM32L151RCT6 chip or STM32F767IGT6 chip.

The microprocessor is connected with the button switch and the indicator light respectively.

Beneficial effects of the present invention:

The railway electric intelligent anti-slip fastener of the present invention adopts the above-mentioned technical scheme, and drives the lead screw to rotate through the first and second steering gears to tighten and loosen the manual brake chain, and has the function of electric placement and removal, thereby reducing the labor intensity of manual placement and removal of the intelligent anti-slip fastener and improving work efficiency; when it is detected that the tension value exceeds the specified range, it can be adjusted in time to solve the problem of untimely handling of abnormal tension and reduce the safety risk of on-site operations in railway stations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the exploded structure of the railway electric intelligent anti-slip fastener of the present invention.

FIG. 2 is a schematic diagram of the front structural view of the railway electric intelligent anti-slip fastener of the present invention.

FIG3 is a schematic diagram of the right side structure of the electric intelligent anti-slip fastener for railways according to the present invention (the steering gear box cover is not shown).

FIG. 4 is a schematic diagram of a circuit board in the railway electric intelligent anti-slip fastener of the present invention.

Figure numerals: 1—hook; 2—tension sensor; 3—sensor box cover; 4—sensor box body; 5—thrust bearing; 6—screw; 7—tension hook; 8—bearing; 9—first servo; 10—servo box body; 11—first driving gear; 12—battery; 13—servo box cover; 14—nut; 15—second servo; 16—sleeve; 17—second driving gear; 18—driven gear; 19—circuit board; 20—button switch; 21—indicator light; 22—long hole; 191—buzzer; 192—communication expansion interface; 193—power management module; 194—tension acquisition module; 195—first servo control module; 196—second servo control module; 197—microprocessor.

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the railway electric intelligent anti-slip fastener of the present invention comprises: a hook 1, a tension sensor 2, a thrust bearing 5, a lead screw 6, a sensor box cover 3, a sensor box body 4, a nut 14, a tension hook 7, a bearing 8, a first steering gear 9, a second steering gear 15, a steering gear box body 10, a sleeve 16, a first driving gear 11, a second driving gear 17, a driven gear 18, a battery 12, a steering gear box cover 13, a circuit board 19, a transparent button switch 20, and an indicator light 21;

The hook 1, the tension sensor 2, the thrust bearing 5 and the lead screw 6 are fixedly connected in sequence; the hook 1 is used to hang the brake chain of the human brake;

The tension sensor 2 is located in the sensor box body 4, and the sensor box cover 3 is connected to the sensor box body 4; the tension sensor 2 is used to measure the axial tension value of the manual brake fastener in real time.

The nut 14 is threadedly connected to the lead screw 6, and a driven gear 18 is fixedly connected to the right end of the lead screw 6; the tensioning hook 7 is hinged to the nut 14, and the tensioning hook 7 is used to hook the vehicle brake rod support bracket and other positions so that the position of the tensioning hook 7 relative to the vehicle remains unchanged; when the lead screw 6 rotates, axial movement occurs between the nut 14 and the lead screw 6, driving the tightening and loosening of the entire mechanism.

The left end of the sleeve 16 is fixedly connected to the right end of the sensor box body 4, and the right end of the sleeve 16 is fixedly connected to the left end of the steering gear box body 10. The sleeve 16 is sleeved outside the thrust bearing 5, the lead screw 6 and the nut 14. The front and rear walls of the sleeve 16 are respectively provided with a long hole, and the tension hook 7 passes through a long hole 22 of the sleeve. The sleeve 16 cooperates with the tension hook 7 to limit the invalid rotation of the entire mechanism.

The first servo 9, the second servo 15, the battery 12 and the circuit board 19 are installed in the servo box 10, the servo box 10 is fixedly connected to the lead screw 6 through the bearing, and the servo box cover 13 is installed on the servo box 10; the bearing 8 and the thrust bearing 5 are coaxial; the button switch 20 is installed on the outer wall of the servo box 10, and the indicator light 21 is installed behind the button switch 20; the indicator light 21 is used to display the working status and alarm signal of the fastener;

The first driving gear 11 is fixedly connected to the output shaft of the first steering gear 9; the second driving gear 17 is fixedly connected to the output shaft of the second steering gear 15; the first driving gear 11 and the second driving gear 17 are respectively meshed with the driven gear 18, and the central axes of the first driving gear 11, the second driving gear 17 and the driven gear 18 are located in the same plane and are parallel to each other; the first steering gear 9 and the second steering gear 15 drive the driven gear 18 and the lead screw 6 to rotate through the first driving gear 11 and the second driving gear 17, and can ensure that the forces on both sides of the driven gear are balanced.

The circuit board 19 is connected to the button switch 20, the indicator light 21, the battery 12, the first servo 9, the second servo 15 and the tension sensor 2 respectively; the circuit board 19 includes a buzzer 191, a communication expansion interface 192, a power management module 193, a tension acquisition module 194, a first servo control module 195, a second servo control module 196 and a microprocessor 197. The first servo 9 and the second servo 15 receive control signals from the first servo control module 195 and the second servo control module 196 respectively and control the output shaft of the first servo 9 and the output shaft of the second servo 15 to rotate clockwise or counterclockwise at the same time. The first servo 9 and the second servo 15 use SRC-T200 high-torque digital servos with a power supply voltage of 12-24V. The first servo 9 and the second servo 15 can provide a maximum torque equivalent to 200Kg·cm respectively. The button switch 20 is used to send a long press signal to the microprocessor 197, and the button switch 20 is transparent for passing the light of the indicator light 21.

The buzzer 191 is connected to the microprocessor 197 and is used to emit sound to indicate the working status of the fastener and to give an alarm.

The communication expansion interface 192 is connected to the microprocessor 197 and is used to connect an external wireless communication module to send the working status and anti-slip abnormality alarm information to the ground monitoring center and receive the tightening and loosening control commands from the ground monitoring center. The anti-slip abnormality alarm information refers to the tension value exceeding the specified range during the anti-slip process.

The power management module 193 is connected to the microprocessor 197 , the first steering gear 9 , and the second steering gear 15 , respectively, to supply power to the microprocessor 197 , the first steering gear 9 , and the second steering gear 15 .

The tension collection module 194 is connected to the microprocessor 197 and the tension sensor 2 respectively. The tension collection module 194 is used to collect the tension value of the tension sensor 2 and transmit it to the microprocessor 197. The microprocessor 197 collects the tension value of the tension sensor 2. When the tension value exceeds the specified range in the anti-slip state, the first steering gear control module 195 and the second steering gear control module 196 automatically control the first steering gear 9 and the second steering gear 15 to rotate continuously clockwise and counterclockwise at the same time, so that the tension value is within the specified range.

The first servo control module 195 is connected to the microprocessor 197 and the first servo 9 respectively, and is used to send command signals to the first servo 9 for continuous clockwise rotation, stop rotation, or continuous counterclockwise rotation, which may be PWM pulse signals; the second servo control module 196 is connected to the microprocessor 197 and the second servo 15 respectively, and is used to send command signals to the second servo 15 for continuous clockwise rotation, stop rotation, or continuous counterclockwise rotation, which may be PWM pulse signals.

The microprocessor 197 adopts STM32L151RCT6 chip or STM32F767IGT6 chip.

The microprocessor 197 is connected to the button switch 20 and the indicator light 21 respectively. The microprocessor 197 receives the signal from the button switch 20 and controls the power management module 193 to supply power to the first servo 9 , the second servo 15 and the microprocessor 197 .

Technical principle of the present invention:

1. When the fastener is in the off state, long press the button switch to start the fastener, and the fastener enters the on state. The microprocessor controls the first servo and the second servo through the first servo control module and the second servo control module to rotate continuously clockwise at the same time, so that the tensioning hook moves toward the hook direction, thereby tightening the manual brake chain.

2. During the tightening process, the microprocessor controls the indicator light to flash yellow and controls the buzzer to continuously emit a "beep, beep" sound. At the same time, the microprocessor regularly collects the tension value of the tension sensor with a period of 200ms. When the tension value is judged to be greater than the lower limit of the specified interval of 10KN, it immediately sends a stop rotation command to the first and second steering gears through the first and second steering gear control modules. The microprocessor controls the buzzer to emit a long "beep" sound, and the fastener enters the anti-slip state.

3. When the fastener is in the anti-slip state, the microprocessor control indicator light is always green. At the same time, the microprocessor regularly collects the tension value of the tension sensor in a period of 20 seconds.

When it is judged that the tension value is less than the lower limit of the specified interval of 10KN, the microprocessor controls the indicator light to flash red, and controls the buzzer to continuously emit a "beep, beep" sound, and performs an anti-slip abnormal alarm. The microprocessor immediately controls the No. 1 and No. 2 servos to rotate clockwise at the same time through the first servo control module and the second servo control module, so that the tensioning hook moves toward the hook direction, thereby tightening the manual brake chain. During the tightening process, the microprocessor controls the indicator light to flash yellow, and controls the buzzer to continuously emit a "beep, beep" sound. At the same time, the microprocessor regularly collects the tension value of the tension sensor with a period of 200ms. When it is judged that the tension value is greater than the lower limit of the specified interval of 10KN, it immediately sends a stop rotation command to the first servo and the second servo through the first servo control module and the second servo control module. The microprocessor controls the indicator light to be always green, and controls the buzzer to make a long "beep" sound. The microprocessor continues to regularly collect the tension value of the tension sensor with a period of 20 seconds;

When the tension value is judged to be greater than the upper limit of the specified interval of 14.7KN, the microprocessor controls the indicator light to flash red, and controls the buzzer to continuously emit a "beep, beep" sound, and performs an anti-slip abnormal alarm. The microprocessor immediately controls the No. 1 and No. 2 servos to rotate counterclockwise at the same time through the first servo control module and the second servo control module, so that the tension hook is away from the hook, thereby releasing the manual brake chain. During the release process, the microprocessor controls the indicator light to flash blue, and controls the buzzer to continuously emit a "beep, beep" sound. At the same time, the microprocessor collects the tension value of the tension sensor at a period of 200ms. When the tension value is judged to be less than the upper limit of the specified interval of 14.7KN, the first servo control module and the second servo control module immediately send a stop rotation command to the first servo and the second servo. The microprocessor controls the indicator light to be always green, and controls the buzzer to make a long "beep" sound. The microprocessor continues to collect the tension value of the tension sensor at a period of 20 seconds.

4. When the fastener is in the on state, long press the button switch and the microprocessor determines the tension value.

When the tension value is greater than 0.1KN, the microprocessor controls the indicator light to flash blue and controls the buzzer to continuously emit a "beep, beep" sound. The microprocessor immediately controls the first and second servos to rotate counterclockwise at the same time through the first servo control module and the second servo control module, so that the tension hook is away from the hook, thereby releasing the manual brake chain. During the release process, the microprocessor regularly collects the tension value of the tension sensor with a period of 200ms. When it is judged that the tension value is less than 0.1KN, it immediately sends a stop rotation command to the first and second servos through the first and second servos control modules. The microprocessor controls the buzzer to sound a long "beep" and controls the indicator light to be extinguished, and the fastener enters the shutdown state.

When the pulling force is less than 0.1KN, the microprocessor controls the buzzer to make a long "beep" sound and turns off the indicator light, and the fastener enters the shutdown state.

If a wireless communication module is connected externally through the communication expansion interface, the microprocessor can also send the tension value of the fastener, the working status information such as the status of the first and second steering gears, and the anti-slip abnormal alarm information to the ground monitoring center through the wireless network. The microprocessor can also receive the tightening and loosening control commands from the ground monitoring center through the wireless communication module, and control the first and second steering gears to rotate clockwise and counterclockwise at the same time through the first steering gear control module and the second steering gear control module, and control the fastener to complete the tightening and loosening actions.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. An electric intelligent anti-slip fastener for a railway, comprising: the device comprises a hook, a tension sensor, a thrust bearing, a screw rod, a sensor box cover, a sensor box body, a nut, a tensioning hook, a bearing, a first steering engine, a second steering engine, a steering engine box body, a sleeve, a first driving gear, a second driving gear, a driven gear, a battery, a steering engine box cover, a circuit board, a transparent button switch and an indicator lamp;

The hook, the tension sensor, the thrust bearing and the screw rod are sequentially and fixedly connected;

The tension sensor is positioned in the sensor box body, and the sensor box cover is connected with the sensor box body;

the nut is in threaded connection with the screw rod, and the right end of the screw rod is fixedly connected with a driven gear; the tensioning hook is hinged with the nut;

The left end of the sleeve is fixedly connected with the right end of the sensor box body, the right end of the sleeve is fixedly connected with the left end of the steering engine box body, the sleeve is sleeved outside the thrust bearing, the screw rod and the nut, a long hole is respectively formed in the front wall and the rear wall of the sleeve, and the tensioning hook penetrates out of one long hole of the sleeve;

The first steering engine, the second steering engine, the battery and the circuit board are arranged in the steering engine box body, the steering engine box body is fixedly connected with the screw rod through the bearing, and the steering engine box cover is arranged on the steering engine box body; the bearing and the thrust bearing are coaxial; the button switch is arranged on the outer wall of the steering engine box body, and the indicator lamp is arranged at the rear of the button switch;

the output shaft of the first steering engine is fixedly connected with the first driving gear; the output shaft of the second steering engine is fixedly connected with the second driving gear; the first driving gear and the second driving gear are respectively meshed with the driven gear, and central axes of the first driving gear, the second driving gear and the driven gear are positioned in the same plane and are parallel to each other;

the circuit board is respectively connected with the button switch, the indicator lamp, the battery, the first steering engine, the second steering engine and the tension sensor; the circuit board comprises a buzzer, a communication expansion interface, a power management module, a tension acquisition module, a first steering engine control module, a second steering engine control module and a microprocessor;

the power management module is respectively connected with the microprocessor, the first steering engine and the second steering engine;

the tension acquisition module is respectively connected with the microprocessor and the tension sensor;

The first steering engine control module is respectively connected with the microprocessor and the first steering engine; and the second steering engine control module is respectively connected with the microprocessor and the second steering engine.

2. The railway electric intelligent anti-slip fastener according to claim 1, wherein the buzzer is connected with the microprocessor and is used for giving out sound to prompt the working state of the fastener and give an alarm.

3. The railway electric intelligent anti-slip fastener according to claim 1, wherein the communication expansion interface is connected with the microprocessor and is used for externally connecting a wireless communication module, sending working state and anti-slip abnormal alarm information to a ground monitoring center and receiving tightening and loosening control commands of the ground monitoring center.

4. The railway electric intelligent anti-slip fastener according to claim 1, wherein the microprocessor adopts an STM32L151RCT6 chip or an STM32F767IGT6 chip.

5. The intelligent anti-slip railway electric fastener according to claim 1, wherein the microprocessor is respectively connected with the push-button switch and the indicator light.