Electric foot buckle and working method thereof

Abstract

The present invention discloses an electric foot buckle and a working method thereof, comprising a foot buckle frame and a pull rod, wherein a foot buckle back sole is hingedly connected to the inner side of the front end of the foot buckle frame, a foot pedal is fixedly arranged on the top of the foot buckle frame, and straps are inserted into the ears on both sides of the foot pedal; a sleeve is fixedly connected to the rear end of the foot buckle frame, and the pull rod is slidably connected to the foot buckle frame through the sleeve, the inner side of the front end of the pull rod is the foot buckle front sole, a first fixing member and a second fixing member are fixedly arranged on the sleeve and the pull rod respectively, and nuts are fixedly arranged on both sides of the first fixing member; a bracket is fixedly arranged at the bottom of the sleeve, a motor is fixedly arranged on the bracket, a controller is fixedly arranged at the bottom of the rear end of the foot buckle frame, the motor is connected to the controller through a wire, and the controller is electrically connected to a button arranged on the upper end of the foot pedal; the output shaft of the DC motor is connected to a lead screw through a coupling, the lead screw passes through the through holes of the first fixing member and the second fixing member and is threadedly connected to the nut so that when the motor drives the lead screw to rotate, the pull rod moves in the sleeve, and the length of the pull rod can be automatically adjusted, which is safe and saves time and effort.

Description

Technical Field

[0001] The invention relates to an electric power repair tool, in particular to an electric foot buckle and a working method thereof. Background Art

[0002] With the progress of urbanization and the expansion of power grid construction, high-voltage and ultra-high-voltage power lines are growing. According to statistics, as of 2021, there are 794,000 kilometers of power lines with a voltage level of 200 kV and below, and 5.3739 million kilometers of power lines with a voltage level of 10 kV. The safe and reliable operation of power lines is the wish of every power worker.

[0003] Since the power lines are basically running at a load of more than 80% during operation, whether it is 0.4 kV or 10 kV, a sudden power outage for several hours will have a great impact on the reliability of power supply, increase the complaint rate, and affect the good image in the minds of customers. In order to ensure the reliable operation of the equipment, the front-line staff need to operate the pole in time, so safe and reliable pole climbing equipment is particularly important. However, the old-fashioned foot buckle has the following problems: First, the old-fashioned foot buckle has no electric part, and the pole is thin on the top and thick on the bottom. When it encounters rain and snow, the foot buckle slides down and the pull rod automatically becomes larger, so it is easy for people to fall down, posing a great threat to the life safety of the operators. Many people are disabled every year. Second, when the operator climbs the pole, the person must shake his feet or use his hands to retract the telescopic rod. At this time, he can only use one foot to force, the speed is very slow, and it is possible that it will not be in place at one time, and a second adjustment is required. Therefore, it consumes a lot of physical strength for the operator.

[0004] It can be seen that the old-style foot clips pose obvious safety hazards when pedaling the pole in extreme weather, and the problem of time-consuming and labor-intensive operation and low efficiency is becoming increasingly prominent. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide an electric foot buckle and a working method thereof, which can automatically adjust the length of the pull rod, is safer and saves time and effort.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An electric foot buckle comprises a foot buckle frame and a pull rod, the foot buckle back sole is hingedly connected to the inner side of the front end of the foot buckle frame, a foot pedal is fixedly installed on the top of the front end of the foot buckle frame, and straps are worn inside the ears on both sides of the foot pedal;

[0008] The rear end of the foot buckle frame is fixedly connected with a collar, the pull rod is slidably connected with the foot buckle frame through the collar, the inner side of the front end of the pull rod is the forefoot of the foot buckle, the collar and the pull rod are respectively fixedly installed with a first fixing piece and a second fixing piece, through holes are provided at relative positions of the first fixing piece and the second fixing piece, nuts are fixedly connected at both sides of the second fixing piece, and the threaded holes of the nuts are connected with the through holes;

[0009] A bracket is fixedly installed at the bottom of the collar, a DC motor is fixedly installed on the bracket, a controller is fixedly installed at the bottom of the rear end of the foot buckle frame, the DC motor is connected to the controller through a wire, and the controller is electrically connected to a button arranged at the upper end of the foot pedal;

[0010] The output shaft of the DC motor is connected to a screw rod through a coupling. The screw rod passes through the through holes of the first fixing member and the second fixing member and is threadedly connected to the nut so that the pull rod moves in the collar when the DC motor drives the screw rod to rotate.

[0011] Furthermore, the inner surfaces of the rear sole of the foot buckle and the front sole of the foot buckle are fixedly provided with silicone, and the surface of the silicone is provided with a pattern.

[0012] Furthermore, the DC motor is a JGB37-520 DC reduction 12V motor.

[0013] Furthermore, the power source of the DC motor is a lithium battery.

[0014] Furthermore, the controller is a STM32F1 microcontroller.

[0015] A working method of an electric foot buckle comprises the following steps:

[0016] Step 1: One foot is placed on the ground, and the foot buckle of the other foot is clamped flat on the electric pole. The foot presses the button at the upper end of the foot pedal, and the controller starts to send a clamping action signal to the DC motor. The motor rotates forward and drives the lead screw to rotate, so that the pull rod moves toward the direction of the foot buckle frame so that the foot buckle clamps the electric pole;

[0017] Step 2: Clamp the foot buckle of the foot that was previously on the ground flatly on the pole, and press the button on the upper end of the pedal with your foot. The controller starts to send a clamping action signal to the DC motor, and the motor rotates forward and drives the lead screw to rotate, so that the pull rod moves toward the direction of the foot buckle frame so that the foot buckle clamps the pole;

[0018] Step 3: In step 2, the weight of the body is transferred to the other foot, so that the button on the upper end of the pedal of the foot buckle in step 1 is released, and the controller starts to send a release action signal to the DC motor, and the DC motor reverses and drives the lead screw to rotate in the opposite direction, so that the pull rod moves in the direction of the foot buckle frame, so that the foot buckle releases the pole, and then moves upward and clamps the pole again;

[0019] Step 4. Repeat steps 1 to 3, alternately loosening or clamping the pole with the foot buckles of both feet to complete climbing the pole.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] Since the technicians will alternately climb up with their two feet during the pole climbing process, the weight of the human body will be alternately loaded onto one of the foot pedals. When the foot steps on the button on the foot pedal, the controller starts to send a clamping action signal to the DC motor, and the motor starts to rotate forward and drives the screw rod to rotate, so that the pull rod slides in the ring toward the foot buckle frame, thereby clamping the pole. When the clamping force is greater than the rotation torque of the motor, the motor stops rotating; when gravity is loaded onto the other foot pedal, that is, the foot steps on the button of the other foot pedal, the controller sends a command to make the corresponding other foot buckle clamp the pole; and the button on the aforementioned foot buckle is released, so the motor starts to reverse and drives the screw rod to rotate in the opposite direction, so that the pull rod slides in the ring in the direction away from the foot buckle frame, thereby loosening the pole. Such repeated cycles can achieve rapid pole climbing, which solves the problem that the old foot buckle requires workers to adjust the pull rod by themselves during the pole climbing process. In addition, the foot buckle of the present invention has a greater gripping force, which can effectively prevent the foot buckle from slipping or sliding.

[0022] The inner surfaces of the rear sole and the front sole of the foot buckle are fixed with silicone, and the silicone surface is provided with patterns. Compared with traditional rubber, it will not harden even at low temperatures and is wear-resistant. Moreover, the silicone surface has patterns, which further enhances the anti-slip property.

[0023] The JGB37-520 DC reduction 12V motor has the following advantages: First, it is compact, stable, and small in size, making the foot buckle light as a whole, and has a large transmission ratio, which can obtain a greater clamping force. Secondly, it has mechanical self-locking properties. When the lead angle of the screw is less than the equivalent friction angle between the nut and the screw, reverse self-locking can be achieved, that is, the screw can only be driven by the motor to rotate, but not by the screw. The reverse self-locking property can play a role in safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : A schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 : A schematic diagram of the top view of the structure of the present invention;

[0026] Figure 3 : A schematic structural diagram of a fixing member of the present invention;

[0027] In the figure: 1. foot buckle frame; 2. pull rod; 3. ring; 31. first fixing member; 32. second fixing member; 4. DC motor; 5. screw rod; 6. controller; 7. button; 8. foot pedal; 9. back of foot buckle; 10. front of foot buckle; 11. wire. DETAILED DESCRIPTION

[0028] The specific contents of the present invention are further explained in detail below in conjunction with the embodiments, but are not intended to limit the present invention.

[0029] like Figure 1-Figure 3 As shown, an electric foot buckle comprises a foot buckle frame 1 and a pull rod 2, the inner side of the front end of the foot buckle frame 1 is hinged with a foot buckle back 9, a foot pedal 8 is fixedly installed on the top of the front end of the foot buckle frame 1, and straps are worn inside the ears on both sides of the foot pedal 8;

[0030] The rear end of the foot buckle frame 1 is fixedly connected with a collar 3, the pull rod 2 is slidably sleeved in the collar 3, the inner side of the front end of the pull rod 2 is the foot buckle forefoot 10, the collar 3 and the pull rod 2 are respectively fixedly installed with a first fixing member 31 and a second fixing member 32, through holes are provided at relative positions of the first fixing member 31 and the second fixing member 32, nuts are welded on both sides of the second fixing member 32, and the threaded holes of the nuts are aligned with and connected to the through holes;

[0031] A bracket is fixedly installed at the bottom of the collar 3, a DC motor 4 is fixedly installed on the bracket, a controller 6 is fixedly installed at the bottom of the rear end of the foot buckle frame 1, the DC motor 4 is connected to the controller 6 through a wire 11, and the controller 6 is electrically connected to a button 7 provided at the upper end of the foot pedal 8;

[0032] The output shaft of the DC motor 4 is connected to a screw rod 5 through a coupling. The screw rod 5 passes through the through holes of the first fixing member 31 and the second fixing member 32 and is threadedly connected to the nut so that the pull rod 2 can move in the collar 3 when the DC motor 4 drives the screw rod 5 to rotate.

[0033] The inner surfaces of the foot buckle rear sole 9 and the foot buckle front sole 10 are fixedly provided with silica gel, and the silica gel surface is provided with patterns. The rubber on the existing foot buckle is replaced with silica gel material, which will not harden in winter and is also wear-resistant, and the pattern on the silica gel surface is like the pattern of a car tire.

[0034] The DC motor 4 is a JGB37-520 DC reduction 12V motor, the shaft of the motor 4 is equipped with a gear reducer, the output shaft of the reducer is equipped with a coupling small hole, and the coupling large hole is equipped with an M10 screw 5. The rotation of the motor 4 drives the reducer, coupling and screw to rotate to clamp and release. The purpose of using a gear reducer in this structure is to reduce the speed of the motor shaft and increase the torque to obtain a greater clamping force.

[0035] Preferably, the power source of the DC motor 4 is a lithium battery.

[0036] Preferably, the controller 6 is an STM32F1 microcontroller, which is designed and manufactured by ST (STMicroelectronics) and is based on the Cortex-M3 core of the ARM architecture. As a high-performance microcontroller, the STM32F1 series uses a 90-nanometer NVM process and ART (Adaptive Real-Time Memory Accelerator) technology to enable zero-wait execution of programs, improve the efficiency of program execution, and maximize the performance of Cortext-M4, so that the main frequency of the STM32 F4 series can reach 168MHz. The chip's adaptive real-time accelerator can fully release the performance of the Cortex-M3 core; when the CPU operates at all allowed frequencies (≤168MHz), the program running in the flash memory can achieve performance equivalent to zero wait cycles. The STM32F4 series microcontroller integrates single-cycle DSP instructions and FPU (Floating Point Unit), which improves computing power and can perform complex calculations and controls. Compared with traditional control chips, this chip integrates new DSP and FPU instructions. The high-speed performance of 168MHz has brought digital signal controller applications and rapid product development to a new level, improving the execution speed and code efficiency of control algorithms. Its built-in adaptive real-time accelerator (ARTAccelerator) and multiple AHB bus matrix and multi-channel DMA support parallel processing of program execution and data transmission. The 168MHz main frequency uses ST's ART accelerator, and the program runs from FLASH, which is equivalent to 0 waiting for more memory. Based on the above advantages, we use this chip as our main controller, which can fully meet our precise control needs for various types of motors, and at the same time meet the real-time and high response sensitivity requirements of our system design.

[0037] Regarding the drive circuit, although some drive modules are available on the market and can be used directly, we found through research that most drive modules use DC chopper chips, and their large current driving capabilities are generally weak. Therefore, we use MOS tubes to build an H-bridge as a drive circuit to control the forward or reverse rotation of motor 4, and use PWM (pulse width modulation) technology to achieve speed regulation.

[0038] A working method of an electric foot buckle comprises the following steps:

[0039] Step 1, one foot is placed on the ground, the foot buckle of the other foot is clamped flat on the electric pole, the foot is pressed on the button at the upper end of the foot pedal 8, the controller 6 starts to send a clamping action signal to the DC motor 4, the DC motor 4 rotates forward and drives the screw rod 5 to rotate, so that the pull rod 2 moves toward the direction of the foot buckle frame 1 so that the foot buckle clamps the electric pole;

[0040] Step 2: clamp the foot buckle of the foot that was previously on the ground flat on the electric pole, and step on the button 7 located at the upper end of the foot pedal 8, the controller 6 starts to send a clamping action signal to the DC motor 4, the DC motor 4 rotates forward and drives the screw rod 5 to rotate, so that the pull rod 2 moves toward the direction of the foot buckle frame 1 so that the foot buckle clamps the electric pole;

[0041] In step 3, the weight of the body is transferred to the other foot in step 2, so that the button 7 on the upper end of the pedal 8 of the foot buckle in step 1 is released, and the controller 6 starts to send a release action signal to the DC motor 4, and the DC motor 4 reverses and drives the screw rod 5 to rotate in the opposite direction, so that the pull rod 2 moves in the direction of the foot buckle frame 1, so that the foot buckle releases the electric pole, and then moves upward and clamps the electric pole again;

[0042] Step 4. Repeat steps 1 to 3, alternately loosening or clamping the pole with the foot buckles of both feet to complete climbing the pole.

Claims

1. An electric foot buckle, characterized in that: It comprises a foot buckle frame (1) and a pull rod (2), wherein a foot buckle rear sole (9) is hingedly connected to the inner side of the front end of the foot buckle frame (1), a foot pedal (8) is fixedly mounted on the top of the front end of the foot buckle frame (1), and straps are provided inside the ears on both sides of the foot pedal (8); The rear end of the foot buckle frame (1) is fixedly connected with a collar (3), the pull rod (2) is slidably connected to the foot buckle frame (1) via the collar (3), the inner side of the front end of the pull rod (2) is a foot buckle forefoot (10), the collar (3) and the pull rod (2) are respectively fixedly mounted with a first fixing member (31) and a second fixing member (32), a through hole is provided at a relative position between the first fixing member (31) and the second fixing member (32), nuts are fixedly connected at both sides of the second fixing member (32), and the threaded holes of the nuts are connected with the through holes; A bracket is fixedly mounted on the bottom of the collar (3), a DC motor (4) is fixedly mounted on the bracket, a controller (6) is fixedly mounted on the bottom of the rear end of the foot buckle frame (1), the DC motor (4) is connected to the controller (6) via a wire (11), and the controller (6) is electrically connected to a button (7) provided at the upper end of the foot pedal (8); The output shaft of the DC motor (4) is connected to a screw rod (5) via a coupling, and the screw rod (5) passes through the through holes of the first fixing member (31) and the second fixing member (32) and is threadedly connected to a nut so that when the DC motor (4) drives the screw rod (5) to rotate, the pull rod (2) moves inside the collar (3); The power source of the DC motor (4) is a lithium battery; The controller (6) is a STM32F1 microcontroller.

2. The electric foot buckle according to claim 1, characterized in that: The inner surfaces of the foot buckle rear sole (9) and the foot buckle front sole (10) are both fixedly provided with silica gel, and the surface of the silica gel is provided with patterns.

3. The electric foot buckle according to claim 1 or 2, characterized in that: The DC motor (4) is a JGB37-520 DC reduction 12V motor.

4. A method for operating the electric foot buckle according to claim 1, characterized in that: The steps include: Step 1: One foot is placed on the ground, and the foot buckle of the other foot is clamped flat on the electric pole. The foot presses the button (7) located at the upper end of the foot pedal (8), and the controller (6) starts to send a clamping action signal to the DC motor (4). The DC motor (4) rotates forward and drives the screw rod (5) to rotate, so that the pull rod (2) moves toward the foot buckle frame (1) so that the foot buckle clamps the electric pole; Step 2: clamp the foot buckle of the foot that was previously on the ground flat on the electric pole, and step on the button (7) located at the upper end of the pedal (8), the controller (6) starts to send a clamping action signal to the DC motor (4), the DC motor (4) rotates forward and drives the screw rod (5) to rotate, so that the pull rod (2) moves toward the direction of the foot buckle frame (1) so that the foot buckle clamps the electric pole; In step 3 and step 2, due to the transfer of the body weight to the other foot, the button (7) at the upper end of the foot pedal (8) of the foot buckle in step 1 is released, and the controller (6) starts to send a release action signal to the DC motor (4), and the DC motor (4) reverses and drives the screw rod (5) to rotate in the opposite direction, so that the pull rod (2) moves in the direction of the foot buckle frame (1), so that the foot buckle releases the electric pole, thereby moving upward and clamping the electric pole again; Step 4. Repeat steps 1 to 3, alternately loosening or clamping the pole with the foot buckles of both feet to complete climbing the pole.

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