Ratchet wheel control device with self-locking device

Abstract

The ratchet wheel control device with the self-locking device comprises a base plate, and a locking limiting structure is arranged on the upper surface of the base plate; the locking and limiting structure comprises a ratchet wheel installation rotating shaft, a ratchet wheel body, a fixed rotating shaft, a rotating disc, a limiting piece, two installation columns, a spring, a motor, a worm and an electric control assembly. The invention relates to the technical field of remote control of fire hydrants, and in comparison with the prior art, the ratchet wheel locking device for the remotely-controlled anti-theft fire hydrant which works depending on a battery can effectively lock a ratchet wheel under the condition that a limiting piece and a gear of the ratchet wheel are not completely meshed, the error does not exceed one gear distance, and the anti-theft fire hydrant is safe and reliable. And during working, the power can be cut off when the motor works once respectively when the motor is opened and locked, and under the continuous pulling force of the spring, the reliable ratchet wheel can be ensured to be in a locked or opened state.

Description

Technical Field

[0001] The present invention relates to the technical field of remote control of fire hydrants, and in particular to a ratchet control device with a self-locking device. Background Art

[0002] A fire hydrant is connected to a fire water supply system or a water supply system, and is provided with a switch valve and one or more outlets for supplying water to a fire hose or a fire truck. Fire hydrants are divided into indoor fire hydrants and outdoor fire hydrants; The old-fashioned fire hydrants can be opened at any time with a hexagonal wrench to draw fire water. When theft occurs, it will cause great waste and safety hazards. Most of the existing intelligent fire hydrants only detect the status and do not lock the fire hydrants, so the occurrence of water theft cannot be effectively prevented. In view of this, in-depth research on the above problems has led to the generation of this case. Summary of the Invention

[0003] The technical solution of the present invention to achieve the above object is: a ratchet control device with a self-locking device, including a chassis, and a locking and limiting structure is provided at the upper end of the chassis; The locking and limiting structure includes: a ratchet mounting shaft, a ratchet body, a fixed shaft, a turntable, a limiting piece, two mounting posts, a spring, a motor, a worm, and an electronic control component; The ratchet mounting shaft is movably connected to the chassis, the ratchet body is fixedly installed at the upper end of the ratchet mounting shaft, the fixed shaft is fixedly installed on the upper surface of the chassis, one end of the turntable is movably sleeved on the upper end of the fixed shaft, one end of the limiting piece is movably connected to the fixed shaft, the two mounting posts are respectively installed at one end of the turntable and on one side of the limiting piece, the two ends of the spring are respectively connected to the two mounting posts, the motor is installed on the upper surface of the chassis, one end of the worm is connected to the driving end of the motor, one end of the worm is meshed with one side of the turntable, and the electronic control component is installed on the upper surface of the chassis and is electrically connected to the motor.

[0004] Preferably, the electronic control component includes: a battery, a power supply wire, a main control board, a motor wire, a vibration sensor, an RFID wireless module, and a communication module; The battery is installed on the upper surface of the chassis, one end of the power supply wire is connected to the battery, the main control board is installed on the upper surface of the chassis and is electrically connected to the power supply wire, the motor wire is electrically connected to the main control board, the vibration sensor is provided on one side of the upper end of the main control board and is electrically connected to the main control board, the RFID wireless module and the communication module are provided on the other side of the upper end of the main control board, and the RFID wireless module and the communication module are electrically connected to the main control board.

[0005] Preferably, one end of the limiting piece is provided with N limiting bumps, where N ≥ 1, and preferably the range of N is 3 - 5.

[0006] Preferably, the spring is a tension spring.

[0007] An operating method of a ratchet control device with a self-locking device, characterized by comprising the following steps: S1, equipment installation; S2, remote connection; S3, vibration alarm; S4, remote control; S5, separation of the limiting piece; S6, closing of the limiting piece. In the step S1: Fix this device on the top of the fire hydrant, and connect one end of the ratchet installation rotating shaft to the valve rod of the fire hydrant. In the step S2: Connect the RFID wireless module and the communication module to the handheld terminal and the remote control terminal respectively. In the step S3: Connect the vibration sensor to the main control board. In the step S4: When the vibration sensor detects abnormal vibration of the fire hydrant, it will send an alarm message to the server through the 4G signal. In the step S5: By reversing the driving motor, under the meshing action of the worm and the turntable, drive the turntable to rotate at the upper end of the fixed rotating shaft, change the position of one of the mounting posts, so that the spring is located on the right side of the fixed rotating shaft. At this time, the direction of the spring tension of the limiting piece changes to the tension away from the ratchet. Therefore, under the action of the spring tension, the limiting piece will be completely separated from the ratchet, and the valve of the fire hydrant can be rotated by a wrench. In the step S6: The driving motor rotates forward to reset the turntable. At this time, the direction of the spring tension of the limiting piece changes to the tension approaching the ratchet. Therefore, under the continuous action of the spring tension, the limiting piece gradually meshes with the gear of the ratchet until it is completely meshed and locked.

[0008] Preferably, the communication module in the step S2 is connected to the remote control terminal through a base station and the Internet of Things.

[0009] A ratchet control device with a self-locking device made by using the technical solution of the present invention, compared with the prior art: The present invention is a ratchet locking device for a remotely controllable anti-theft fire hydrant that relies on a battery to work. This device can effectively lock the ratchet when the gear of the limit piece and the ratchet are not fully engaged, with an error not exceeding one gear pitch, and extend the battery life. During operation, the motor only works once when opening and locking, and then can be powered off. Under the continuous pulling force of the spring, the reliable ratchet can be ensured to be in the locked or open state; even when the ratchet and the limit piece are not fully engaged or disengaged, the motor does not need to be continuously powered to provide power, which can effectively reduce the battery energy consumption and increase the battery life. In addition, it can also effectively avoid the possibility of water theft. When water theft occurs, the device of the present invention can send an alarm signal to terminals such as a computer and a mobile phone, and the operator can issue a self-locking instruction to this device at the terminal to avoid water theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. is a schematic structural diagram of the closed state of a ratchet control device with a self-locking device according to the present invention; Figure 2 FIG. is a schematic block diagram of the structural relationship of a ratchet control device with a self-locking device according to the present invention; In the figure: 1, chassis; 2, ratchet mounting rotating shaft; 3, ratchet body; 4, fixed rotating shaft; 5, turntable; 6, limit piece; 7, mounting post; 8, spring; 9, motor; 10, worm; 11, battery; 12, power supply line; 13, main control board; 14, motor line; 15, vibration sensor; 16, RFID wireless module; 17, communication module; 18, limit protrusion. EMBODIMENTS

[0011] The present invention will be specifically described below with reference to the accompanying drawings. As Figure 1-2 shown, a ratchet control device with a self-locking device.

[0012] Embodiment: A ratchet control device with a self-locking device, including a chassis 1. A locking and limiting structure is provided at the upper end of the chassis 1. The locking and limiting structure includes: a ratchet mounting rotating shaft 2, a ratchet body 3, a fixed rotating shaft 4, a turntable 5, a limiting piece 6, two mounting columns 7, a spring 8, a motor 9, a worm 10, and an electronic control component. The electronic control component includes a battery component and a control component. The ratchet mounting rotating shaft 2 is movably connected to the chassis 1. The ratchet body 3 is fixedly installed at the upper end of the ratchet mounting rotating shaft 2. The mounting rotating shaft is a long shaft that penetrates up and down, and its length exceeds the thickness of the ratchet body 3. The fixed rotating shaft 4 is fixedly installed on the upper surface of the chassis 1. One end of the turntable 5 is movably sleeved on the upper end of the fixed rotating shaft 4. One end of the limiting piece 6 is movably connected to the fixed rotating shaft 4. The two mounting columns 7 are respectively installed at one end of the turntable 5 and on one side of the limiting piece 6. The two mounting columns 7 are not connected to the chassis 1 and are used for hanging the spring 8. Both ends of the spring 8 are respectively connected to the two mounting columns 7. The motor 9 is installed on the upper surface of the chassis 1. One end of the worm 10 is connected to the driving end of the motor 9. The worm 10 extends from the driving shaft at the center of the motor. A turbine is sleeved on the worm 10. The motor and the turbine are integrally fixed on the upper surface of the chassis 1. The electronic control component is installed on the upper surface of the chassis 1 and is electrically connected to the motor 9. The electronic control component includes: a battery 11, a power supply wire 12, a main control board 13, a motor wire 14, a vibration sensor 15, an RFID wireless module 16, and a communication module 17. The battery 11 is installed on the upper surface of the chassis 1. One end of the power supply wire 12 is connected to the battery 11. The main control board 13 is installed on the upper surface of the chassis 1 and is electrically connected to the power supply wire 12. The motor wire 14 is electrically connected to the main control board 13. The vibration sensor 15 is electrically connected to the main control board 13. The RFID wireless module 16 and the communication module 17 are both installed on the upper end of the main control board 13. One end of the limiting piece 6 is provided with N limiting protrusions 18, where N≥1, and preferably 3-5. One end of the worm 10 meshes with one side of the turntable 5. The turbine drives the turntable 5 to rotate, thereby driving the movement of the fixed end of the spring 8 on the turntable 5, so as to provide a locking or opening force for the mounting column 7. The purpose of the rotation of the motor 9 is to move the position of the fixed point of the spring 8 on the turntable 5. The spring 8 is a tension spring 8.

[0013] An operation method of a ratchet control device with a self-locking device includes the following steps: S1, equipment installation; S2, remote connection; S3, vibration alarm; S4, remote control; S5, separation of the limit piece 6; S6, closing of the limit piece 6. In step S1: Fix this device on the top of the fire hydrant, and connect one end of the ratchet installation rotating shaft 2 to the valve rod of the fire hydrant. The axes of the ratchet installation rotating shaft 2 and the valve rod of the fire hydrant coincide. In step S2: Connect the RFID wireless module 16 and the communication module 17 to the handheld terminal and the remote control terminal respectively. In step S3: Connect the vibration sensor 15 to the main control board 13. In step S4: When the vibration sensor 15 detects abnormal vibration of the fire hydrant, it will send an alarm message to the server through the 4G signal generated by the communication module 17. In step S5: Reverse the driving motor 9, and control it through remote signals (4G). It can also be controlled on-site through RFID. Multiple control means are considered for fire safety, and the situation where the valve cannot be opened should not occur. Under the meshing action of the worm 10 and the turntable 5, drive the turntable 5 to rotate at the upper end of the fixed rotating shaft 4, change the position of one of the mounting posts 7, so that the spring 8 is located on the right side of the fixed rotating shaft 4. At this time, the direction of the pulling force of the spring 8 on the limit piece 6 changes to a pulling force away from the ratchet. Therefore, under the action of the pulling force of the spring 8, the limit piece 6 will completely disengage from the ratchet, and the valve of the fire hydrant can be rotated by a wrench. In step S6: Rotate the driving motor 9 forward to reset the turntable 5. At this time, the direction of the pulling force of the spring 8 on the limit piece 6 changes to a pulling force approaching the ratchet. Therefore, under the continuous pulling force of the spring 8, the limit piece 6 gradually meshes with the gear of the ratchet until it is completely meshed and locked. The communication module 17 in step S2 is connected to the remote control terminal through the base station and the Internet of Things; It should be noted that first, fix the chassis 1 to the upper end of the fire hydrant, connect the ratchet installation rotating shaft 2 to the valve rod of the fire hydrant, and then connect the device to the remote terminal. When the vibration sensor 15 on the upper end of the main control board 13 detects vibration, an alarm signal is sent to the remote terminal through the RFID wireless module 16 and the communication module 17. When water is needed in case of a fire or other situations nearby, the motor 9 can be remotely controlled to reverse through the 4G signal. Under the meshing action of the worm 10 and the turntable 5, the turntable 5 is driven to rotate on the upper end of the fixed rotating shaft 4, changing the position of one of the mounting columns 7, so that the spring 8 is located on the right side of the fixed rotating shaft 4. At this time, the direction of the pulling force of the spring 8 on the limit piece 6 changes to a pulling force away from the ratchet. Therefore, under the action of the pulling force of the spring 8, the limit piece 6 will be completely disengaged from the ratchet. Even if the teeth of the limit piece 6 and the gear of the ratchet are not completely disengaged and opened, when the ratchet rotates, the limit piece 6 will be completely disengaged from the ratchet under the action of the pulling force of the spring 8 and become a completely open state. Then, the valve of the fire hydrant can be rotated by a wrench to directly unlock the fire hydrant, and the on-site personnel can open the fire hydrant for water supply. On the contrary, by rotating the motor 9 forward, the turntable 5 is reset. At this time, the direction of the pulling force of the spring 8 on the limit piece 6 changes to a pulling force approaching the ratchet. Even if the teeth of the limit piece 6 and the gear of the ratchet are not completely engaged, when the ratchet rotates, the limit piece 6 will gradually engage with the gear of the ratchet under the continuous pulling force of the spring 8 until it is completely engaged and locked, performing a remote locking operation on the fire hydrant. The on-site staff can also control the locking and opening of the ratchet through special equipment through RFID wireless communication (short-range communication). All the electronic control templates, the main board, and the mechanical mechanism together form a ratchet control device in the same space, which can effectively prevent the theft of fire-fighting water through the fire hydrant and has no impact on the normal use of the fire hydrant. The main control board 13 is powered by the battery 11 and communicates with the remote service through the RFID wireless module 16 and the communication module 17, and usually works in a low-power state.

[0014] The above technical solution only reflects the preferred technical solution of the technical solution of the present invention. Some changes that may be made by those skilled in the art to some parts thereof all reflect the principle of the present invention and fall within the protection scope of the present invention.

Claims

1. A ratchet control device with a self-locking device, comprising a chassis (1), characterized in that: The upper surface of the chassis (1) is provided with a locking and limiting structure; The locking and limiting structure comprises: a ratchet mounting shaft (2), a ratchet body (3), a fixed shaft (4), a rotating disk (5), a limiting plate (6), two mounting columns (7), a spring (8), a motor (9), a worm (10) and an electric control component; The ratchet mounting shaft (2) is movably connected to the chassis (1), the ratchet body (3) is fixedly mounted on the upper end of the ratchet mounting shaft (2), the fixed shaft (4) is fixedly mounted on the upper surface of the chassis (1), one end of the turntable (5) is movably sleeved on the upper end of the fixed shaft (4), one end of the limit plate (6) is movably connected to the fixed shaft (4), two mounting posts (7) are respectively mounted on one end of the turntable (5) and one side of the limit plate (6), two ends of the spring (8) are respectively connected to the two mounting posts (7), the motor (9) is mounted on the upper surface of the chassis (1), one end of the worm (10) is connected to the driving end of the motor (9), one end of the worm (10) is meshed with one side of the turntable (5), and the electric control component is mounted on the upper surface of the chassis (1) and is electrically connected to the motor (9).

2. A ratchet control device with a self-locking device according to claim 1, characterized in that: The electric control assembly comprises: a battery (11), a power supply line (12), a main control board (13), a motor line (14), a vibration sensor (15), an RFID wireless module (16) and a communication module (17); The battery (11) is mounted on the upper surface of the chassis (1), one end of the power supply line (12) is connected to the battery (11), the main control board (13) is mounted on the upper surface of the chassis (1) and is electrically connected to the power supply line (12), the motor line (14) is electrically connected to the main control board (13), the vibration sensor (15) is provided on the upper surface of the main control board (13), the vibration sensor (15) is electrically connected to the main control board (13), the RFID wireless module (16) and the communication module (17) are provided on the other side of the upper end of the main control board (13), the RFID wireless module (16) and the communication module (17) are electrically connected to the main control board (13).

3. A ratchet control device with a self-locking device according to claim 1, characterized in that: One end of the limiting plate (6) is provided with N limiting protrusions (18), wherein N≥1.

4. A ratchet control device with a self-locking device according to claim 1, characterized in that: The spring (8) is a tension spring.

5. The method for operating a ratchet control device with a self-locking device as claimed in claim 1, characterized in that: The method comprises the following steps: S1, equipment installation, S2, remote connection, S3, vibration alarm, S4, remote control, S5, separation of the limit piece (6), and S6, closing of the limit piece (6); Step S1: fix the device to the top of the fire hydrant, and connect one end of the ratchet mounting shaft (2) to the valve stem of the fire hydrant; The step S2: connecting the RFID wireless module (16) and the communication module (17) to the handheld terminal and the remote control terminal respectively; The step S3: connecting the vibration sensor (15) to the main control board (13); Step S4: when the vibration sensor (15) detects abnormal vibration of the fire hydrant, an alarm message is sent to the server via a 4G signal generated by the communication module (17); The step S5: by driving the motor (9) in reverse, the worm (10) and the turntable (5) are meshed, driving the turntable (5) to rotate on the upper end of the fixed shaft (4), changing the position of one of the mounting posts (7) so that the spring (8) is located on the right side of the fixed shaft (4). At this time, the direction of the tension of the spring (8) of the limit plate (6) is changed to a tension away from the ratchet. Therefore, the limit plate (6) is completely separated from the ratchet under the action of the tension of the spring (8), and the valve of the fire hydrant can be rotated by a wrench; Step S6: the driving motor (9) rotates forward to reset the turntable (5). At this time, the direction of the tension of the spring (8) of the limit plate (6) changes to a tension force approaching the ratchet wheel. Therefore, under the action of the continuous tension of the spring (8), the limit plate (6) gradually meshes with the gear of the ratchet wheel until it is fully meshed and locked.

6. The method for operating a ratchet control device with a self-locking device according to claim 6, characterized in that: The communication module (17) in step S2 is connected to the remote control terminal via the base station and the Internet of Things.

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