Detection device for tail end of electric pipe coiling device

Abstract

The Hall sensor detects a magnetic signal and sends an instruction to the MCU to control the motor to decelerate or stop running. The non-contact distance measurement scheme can accurately adapt to flexible tubular objects with different diameters in real time, and the remote controller assembly is effectively prevented from being damaged by decelerating or stopping in advance. The system synchronously monitors the working current in the deceleration process of the motor, and immediately cuts off the power when detecting that the instantaneous current exceeds the safety threshold, thereby protecting the remote controller assembly and avoiding the excessive stretching of the pipe. And the magnetic part is a soft magnetic ring, so that the requirements of reelpipes with various pipe diameters and materials can be flexibly met, and the universality and the maintenance convenience of the equipment are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of electric hose reel technology, and in particular to an electric hose reel end detection device. Background Technology

[0002] Traditional electric hose reels typically rely on mechanical limit switches or timers to control the end point of hose reeling. Mechanical limit switches are prone to damage during high-speed hose reeling due to mechanical impacts, potentially even causing the motor to stall. Prolonged use of mechanical limit switches leads to wear at the limit points, decreased accuracy, and the need for frequent maintenance and replacement.

[0003] The timer cannot adapt to changes in tube length or winding speed. When changing tubes or during initial installation, the time parameters need to be manually reset, which is cumbersome and prone to errors.

[0004] In electric hose reels, inconsistent hose diameters during the winding process make it difficult to effectively determine the number of turns and the winding endpoint. Existing technology uses the remote control assembly of the hose reel to impact the housing for physical positioning, which not only generates high impact force and noise but also easily damages the motor and flexible tubing over time. Summary of the Invention

[0005] To address the shortcomings of the existing technology, the purpose of this invention is to provide an end detection device for electric hose reels. This device is used in electric hose reels.

[0006] The electric hose reel includes a housing, a hose take-up assembly, and a motor. The housing has a guide tube opening. The end detection device includes:

[0007] A flexible tubular object, with one end wrapped around the tube receiving assembly and the other end passing through the tube laying assembly and exiting the conduit opening;

[0008] Hall effect sensor, fixed on the pipe assembly;

[0009] The remote control assembly is fitted onto one end of the flexible tubular object that protrudes from the conduit opening;

[0010] The magnetic component is mounted on a flexible tubular object and spaced apart from the remote control assembly.

[0011] When the Hall sensor detects the magnetic element during the process of the motor driving the tube-retracting assembly to retract the flexible tubular object, it outputs an electrical signal to cause the motor to decelerate or stop.

[0012] In one embodiment, the pipe assembly includes a guide unit through which the flexible tubing passes, and the Hall sensor is fixed to one side of the guide unit.

[0013] In one embodiment, the guiding unit includes a guide frame with a through guide hole, and a Hall sensor is disposed outside the guide hole.

[0014] In one embodiment, the guide frame includes two frames arranged opposite each other and a guide wheel installed between the two frames, with a guide hole formed between the frames and the guide wheel.

[0015] In one embodiment, the guide frame includes two frames arranged opposite each other, a guide wheel installed between the two frames, and a guide hole formed between the frames and the guide wheel.

[0016] In one embodiment, the guide frame is tilted relative to the guiding direction of the flexible tubular structure.

[0017] In one embodiment, the pipe manifold assembly includes a pipe manifold screw rotatably connected to the housing, the pipe manifold screw being provided with intersecting positive and negative threads; the guide frame is connected to the pipe manifold screw and reciprocates.

[0018] In one embodiment, the magnetic elements include a plurality of magnetic elements, which are spaced apart along the flexible tubular structure.

[0019] In one embodiment, the magnetic element is a soft magnetic ring that can be fitted onto a flexible tubular object.

[0020] In one embodiment, the diameter of the remote-controlled ball is larger than the conduit opening.

[0021] In one embodiment, the magnetic field sensing of the magnetic ring and the Hall sensor triggers an MCU control signal to control the motor to decelerate or stop working.

[0022] The advantages of this invention compared to the prior art after adopting the above structure are:

[0023] When the hose reel moves to wind up the hose, the magnetic component moves closer to the Hall sensor until the sensor detects it. The Hall sensor then sends a signal to the MCU to decelerate or stop the motor. This allows for non-contact, high-precision real-time distance measurement regardless of the flexible tubing diameter, enabling pre-emptive deceleration or stopping to prevent damage to the hose reel's remote control assembly. Simultaneously, the current is monitored as the motor begins to decelerate; if the instantaneous current exceeds a threshold, the movement stops, effectively protecting the remote control assembly and preventing excessive stretching of the flexible tubing. The use of a soft magnetic ring facilitates easy disassembly and adapts to different hose diameters and materials. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a three-dimensional structural diagram of the end detection device of the electric hose reel of this utility model.

[0026] Figure 2This is a three-dimensional partial structural diagram of the electric hose reel end detection device of this utility model.

[0027] Figure 3 This is a top-view three-dimensional partial structural diagram of the electric hose reel device of this utility model.

[0028] In the figure: pipe laying assembly 10; guide unit 11; pipe laying screw 12; guide frame 111; guide wheel 112; moving gear 113; Hall sensor 20; magnetic component 30; pipe reel 40; pipe take-up assembly 41; conduit port 42; right housing 43; left housing 44. Detailed Implementation

[0029] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0030] like Figure 3 As shown, the hose reel 40 includes a left housing 44, a right housing 43, and a hose take-up assembly 41. One side of the hose take-up assembly 41 is connected to the moving gear 113 via a chain drive, and the other side is rotatably mounted on the right housing 43. After the left and right housings are joined, the hose reel assembly 10 and the hose take-up assembly 41 are enclosed inside, with a pre-reserved opening at the front end forming a conduit port 42. The hose reel assembly 10 is installed between the hose take-up assembly 41 and the conduit port 42. One end of the flexible tubular material is wound around the roller of the hose take-up assembly 41, and the other end passes through the hose reel assembly 10 and the conduit port 42.

[0031] like Figure 1 As shown, the pipe-laying assembly 10 mainly consists of a guide unit 11, a pipe-laying screw 12, and a moving gear 113. The guide unit 11 includes a guide frame 111 with guide holes. The guide frame 111 is inclined relative to the guiding direction of the flexible tubular object. The magnitude of the inclination angle affects the frictional force on the flexible tubular object; a larger inclination angle results in greater friction, which can be adjusted according to actual conditions. The guide frame 111 includes two opposing frames. The two frames form a U-shaped groove, effectively limiting the lateral sway of the flexible tubular object.

[0032] like Figure 2As shown, the guide hole is formed by the frame and guide wheels 112. The diameters of the two sides of these guide wheels 112 are larger than the diameter in the middle. This structure can effectively help the flexible tubing stay in the center of the U-shaped groove. Considering that the flexible tubing will sway significantly due to inertia when the tubing take-up assembly 41 is running at high speed, a preferred solution is to install two guide wheels 112 at intervals. After the flexible tubing passes between the two guide wheels 112, even if the tubing shifts upward, it can be smoothly taken back under the action of the upper guide wheel 112, which reduces friction and effectively limits the amount of vertical sway. Another optimization is to set the installation interval of the two guide wheels 112 to be equal to the diameter of the flexible tubing. In this way, both guide wheels 112 can contact the tubing, thereby better limiting sway and improving the tubing take-up efficiency.

[0033] like Figure 2 As shown, the Hall sensor 20 is fixed to one side of the U-shaped groove of the guide frame 111. When the flexible tubular object continues to roll inward, the magnetic component 30 mounted on the tube gradually approaches the Hall sensor 20. When the distance between them reaches a threshold value, the Hall sensor 20 inputs a changing level signal to the MCU, triggering a deceleration or stop command. Preferably, the Hall sensor 20 is mounted between the two guide wheels 112, which allows for more accurate detection of the position of the magnetic component 30 and ensures timely signal transmission.

[0034] One side of the pipe-laying screw 12 is horizontally mounted inside the housing of the pipe winder 40 via a moving gear 113, and the other side is mounted on the right housing 43, with intersecting positive and negative threads on its surface. The guide frame 111 is drivenly connected to the pipe-laying screw 12. When the pipe-receiving assembly 41 is running, the chain drives the moving gear 113 and the pipe-laying screw 12, thereby enabling the guide frame 111 to move left and right, ensuring that the flexible tubular material can be evenly distributed.

[0035] like Figure 1 As shown, the device also includes a magnetic component 30 mounted on a flexible tubular object. This magnetic component 30 employs a soft magnetic ring design, is detachable, and can be adapted to different pipe diameters. Its installation position must meet two conditions: first, it must be located at the portion of the flexible tubular object extending beyond the conduit opening 42; second, it must not exceed the remote control ball. To further optimize control, multiple magnetic components 30 can be installed on the flexible tubular object, such as two closely spaced magnetic components 30. When the Hall sensor 20 detects the first magnetic component 30, the moving gear 113 begins to decelerate; upon detecting the second, it comes to a complete stop. Alternatively, when the first magnetic component 30 is detected, the motor decelerates by a certain percentage, and upon detecting the second, it continues to decelerate until it stops. In short, there are multiple installation methods and practical applications available for the magnetic component 30, which can be customized to the user's needs.

[0036] Furthermore, the hose reel 40 employs a dual-protection method to prevent overwinding. A remote-controlled ball is installed at the portion of the flexible tubing extending beyond the guide tube opening 42. Preferably, the diameter of the remote-controlled ball is larger than the diameter of the guide tube opening 42. When the motor enters slow-speed reeling mode, the MCU begins monitoring the current. When the remote-controlled ball, along with the flexible tubing, is reeled inwards and becomes stuck outside the guide tube opening 42, if the instantaneous current exceeds the safety threshold, the MCU will send a signal to stop the motor. Therefore, the remote-controlled ball is positioned as close as possible to the end of the flexible tubing to ensure maximum reeling. This design prevents the motor from being constantly stalled, extending its lifespan, and also prevents damage in case of hands or other foreign objects being caught.

Claims

1. An end detection device for an electric hose reel, used in an electric hose reel, the electric hose reel comprising a housing, a hose take-up assembly, and a motor, the housing having a guide tube opening, characterized in that, The end-point detection device includes: The pipe assembly is mounted on the housing and is located in the direction of the pipe opening's extension; A flexible tubular object, with one end wrapped around the tube receiving assembly and the other end passing through the tube laying assembly and exiting the conduit opening; Hall effect sensor, fixed on the pipe assembly; The remote control assembly is fitted onto one end of the flexible tubular object that protrudes from the conduit opening; The magnetic component is mounted on a flexible tubular object and spaced apart from the remote control assembly. When the Hall sensor detects the magnetic element during the process of the motor driving the tube-retracting assembly to retract the flexible tubular object, it outputs an electrical signal to cause the motor to decelerate or stop.

2. The end-effector detection device according to claim 1, characterized in that, The pipe assembly includes a guide unit through which the flexible tubular material passes, and a Hall sensor is fixed to one side of the guide unit.

3. The end-effector detection device according to claim 2, characterized in that, The guiding unit includes a guide frame with a through guide hole, and a Hall sensor is disposed on the outside of the guide hole.

4. The end-effector detection device according to claim 3, characterized in that, The guide frame includes two frames arranged opposite each other and guide wheels installed between the two frames, with guide holes formed between the frames and the guide wheels.

5. The end-effector detection device according to claim 3, characterized in that, The guide frame is inclined relative to the guiding direction of the flexible tubular structure.

6. The end-effector detection device according to claim 3, characterized in that, The pipe-laying assembly includes a pipe-laying screw rotatably connected to the housing, the pipe-laying screw having intersecting positive and negative threads; the guide frame is connected to the pipe-laying screw and reciprocates.

7. The end-effector detection device according to claim 1, characterized in that, The magnetic components include a plurality of magnetic components, which are spaced apart along the flexible tubular structure.

8. The end-effector detection device according to claim 7, characterized in that, The magnetic component is a soft magnetic ring that can be fitted onto a flexible tubular object.

9. The end-effector detection device according to claim 1, characterized in that, The diameter of the remote-controlled ball is larger than the opening of the conduit.

10. The end-effector detection device according to any one of claims 1-9, characterized in that, The magnetic field of the magnetic ring and the Hall sensor triggers the MCU control signal to control the motor to decelerate or stop working.

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