Double-Hall magnetic induction sensor with pull rope inside

Abstract

The utility model discloses a double-Hall magnetic induction sensor with a pull rope inside, which belongs to the technical field of double-Hall magnetic induction sensors and comprises an upper cover, a lower cover, a first magnetic induction device and a second magnetic induction device. A winding roll is arranged in an inner cavity of the winding roll shell, a connecting rope is connected to the side face of the winding roll, a transmission shaft is fixedly connected to the top face of the winding roll in an embedded mode, and a connecting gear is connected to the top face of the transmission shaft; the double-Hall magnetic induction module comprises a fixed plate and two magnetic blocks, the top surface of the fixed plate is rotatably connected with two gear shafts through bearings, the side surfaces of the two gear shafts are respectively connected with a transmission gear I and a transmission gear II, the transmission gear I is meshed with a positioning gear, the top surface of the positioning gear is connected with the transmission gear II, and the transmission gear II is meshed with the positioning gear; according to the double-Hall magnetic induction device, the connecting rope can be prevented from being loosened, and meanwhile double-Hall magnetic induction is more accurate and reliable.

Description

Technical Field

[0001] This invention belongs to the technical field of dual Hall magnetic induction sensors, and in particular, a dual Hall magnetic induction sensor with a pull rope inside. Background Technology

[0002] The dual Hall effect magnetic induction sensor inside the pull rope is used in the construction machinery industry, including but not limited to crane outriggers, aerial work platform booms, rock drilling rigs, and booms.

[0003] Current sensors mainly use external pull-cord sensors. With the pull cord exposed, the strong vibrations that accompany vehicle operation often cause the pull cord to come off the reel. In some harsh environments, the pull cord is also easily damaged. Utility Model Content

[0004] The purpose of this invention is to provide a dual Hall magnetic induction sensor with a pull rope inside, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual Hall magnetic induction sensor with a pull rope inside, comprising:

[0006] The top cover has a recessed bottom, and a Hall sensor is installed at the bottom of the top cover.

[0007] The cable reel housing has a concave bottom. The inner cavity of the cable reel housing contains the cable reel. A connecting rope is connected to the side of the cable reel. A drive shaft is embedded and fixedly connected to the top surface of the cable reel. A connecting gear is connected to the top surface of the drive shaft.

[0008] The dual Hall magnetic induction module is located on the upper part of the winding reel housing. The dual Hall magnetic induction module includes a fixing plate and two magnetic blocks. The top surface of the fixing plate is rotatably connected to two gear shafts via bearings. The sides of the two gear shafts are respectively connected to a transmission gear one and a transmission gear two. The transmission gear one meshes with a positioning gear, and the top surface of the positioning gear is connected to the transmission gear two. The top surfaces of the two gear shafts are respectively embedded and fixedly connected to the two magnetic blocks. The connecting gear meshes with the transmission gear two.

[0009] Preferably, the bottom surface of the fixing plate is connected and fixed to the outer shell of the winding reel by bolts, and the inner top wall of the outer shell of the winding reel is rotatably connected to the drive shaft.

[0010] Preferably, the bottom surface of the Hall sensor is fixed to the fixing plate by bolts, and there is a gap between the top surface of the two magnetic blocks and the Hall sensor.

[0011] Preferably, the bottom surface of the top cover is connected to the outer shell of the winding reel by bolts, and there is a gap between the inner sidewall of the outer shell of the winding reel and the winding reel.

[0012] Preferably, a flat coil spring housing with a concave bottom is rotatably connected to the side of the drive shaft via a bearing, and a flat coil spring is connected to the inner side wall of the flat coil spring housing.

[0013] Preferably, the bottom surface of the drive shaft is connected to the flat coil spring, the bottom surface of the flat coil spring housing is bolted to a bottom cover, and the side of the coil housing is connected to an internally hollow connecting shell.

[0014] Preferably, the end of the connecting rope away from the reel passes through the connecting housing and is connected to a connecting plate, and there is a gap between the top surface of the Hall sensor and the top cover.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] The pull rope has an internal dual Hall magnetic induction sensor. To prevent the connecting rope from coming off the reel during use and causing damage, the reel is positioned adjacent to the reel shell and the flat spring shell. This prevents the connecting rope from coming off the reel during winding and unwinding, thus protecting the connection. The connecting shell provides positioning for the movement of the connecting rope, further ensuring that the connecting rope will not come off the reel, allowing the connecting plate to connect with the external measuring device.

[0017] The pull rope incorporates a dual Hall effect magnetic sensor internally. The drive shaft is connected to the winding reel, enabling synchronous and co-directional rotation of the drive shaft and the winding reel. The inner and outer ends of a planar coil spring are connected to the drive shaft and the outer shell of the planar coil spring, respectively. When the pull rope is unloaded, the planar coil spring winds it up. When the pull rope needs to be wound up, the planar coil spring provides elastic tension. During the transmission process, the winding reel rotates, winding up the pull rope and improving the ease of use of the dual Hall effect magnetic sensor internally.

[0018] The pull rope contains a dual Hall magnetic induction sensor. The first transmission gear meshes with the positioning gear, the positioning gear is connected and fixed to the second transmission gear, and the second transmission gear meshes with the connecting gear. When the transmission shaft rotates, the first and second transmission gears rotate, thus rotating the two magnetic blocks. Under the change of magnetic field, in conjunction with the Hall sensing device, the data from the two Hall sensors are detected simultaneously, making the Hall sensing more accurate and reliable. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a left sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the disassembled structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Top cover; 2. Hall effect sensor; 3. Dual Hall effect magnetic induction module; 4. Winding reel housing; 5. Winding reel; 6. Drive shaft; 7. Flat coil spring housing; 8. Flat coil spring; 9. Bottom cover; 10. Connecting housing; 11. Connecting rope; 12. Connecting plate. Detailed Implementation

[0025] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0026] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0027] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0028] Please see Figures 1 to 3 A dual Hall effect magnetic induction sensor with a pull cord inside, in this embodiment including:

[0029] The upper cover 1 has a recessed bottom, and a Hall sensor 2 is provided at the lower part of the upper cover 1. The Hall sensor 2 is located in the inner cavity of the upper cover 1.

[0030] The reel housing 4 has a concave bottom. The reel 5 is installed inside the reel housing 4. The top surface of the reel 5 is in rotational frictional contact with the reel housing 4. A connecting rope 11 is connected to the side of the reel 5. The reel 5 is used to wind and release the connecting rope 11. A drive shaft 6 is embedded and fixedly connected to the top surface of the reel 5, so that the drive shaft 6 and the reel 5 rotate synchronously and in the same direction. Both ends of the drive shaft 6 pass through the reel 5. A connecting gear is connected to the top surface of the drive shaft 6, so that the drive shaft 6 can drive the connecting gear to rotate synchronously and in the same direction during the rotation of the drive shaft 6.

[0031] The dual Hall magnetic induction module 3 is located on the upper part of the cable reel housing 4. The dual Hall magnetic induction module 3 includes a fixing plate and two magnetic blocks. The Hall sensing device 2 contains two Hall sensing chips, which correspond one-to-one with the two magnetic blocks, providing the conditions for the dual Hall magnetic induction function. The top surface of the fixing plate is rotatably connected to two gear shafts via bearings. The sides of the two gear shafts are respectively connected to transmission gear one and transmission gear two. The bottom surface of transmission gear two is higher than the top surface of transmission gear one. Transmission gear one meshes with a positioning gear. The top surface of the positioning gear is connected to transmission gear two, so that transmission gear two and positioning gear rotate synchronously and in the same direction. The top surfaces of the two gear shafts are respectively embedded and fixedly connected to the two magnetic blocks. The connecting gear meshes with transmission gear two, so that when the transmission shaft 6 rotates, it can drive the two magnetic blocks to rotate. With the cooperation of the Hall sensing device 2, the data of the two Hall sensors are detected simultaneously, making the Hall sensing more accurate and reliable. There is a gap between the top surface of the connecting gear and the Hall sensing device 2 to prevent friction damage to the Hall sensing device 2 and improve the structural stability of the components of the dual Hall magnetic induction sensor inside the cable.

[0032] The bottom surface of the fixed plate is fixed to the cable reel housing 4 by bolts. The inner top wall of the cable reel housing 4 is rotatably connected to the drive shaft 6. The bottom surface of the Hall sensor 2 is fixed to the fixed plate by bolts. There is a gap between the top surface of the two magnetic blocks and the Hall sensor 2, providing sufficient space for the rotation of the two magnetic blocks. The bottom surface of the top cover 1 is fixed to the cable reel housing 4 by bolts. There is a gap between the inner side wall of the cable reel housing 4 and the cable reel 5, providing sufficient space for the cable reel 5 to wind up the connecting rope 11. The side of the drive shaft 6 is rotatably connected to a flat coil spring housing 7 with a concave bottom via a bearing, so that the flat coil spring housing 7 fixes the rotational position of the drive shaft 6 and improves the dual Hall effect of the pull rope inside. The stability of the component structure of the magnetic induction sensor is ensured by the following: a planar coil spring 8 is connected to the inner wall of the planar coil spring housing 7; the bottom surface of the drive shaft 6 is connected to the planar coil spring 8; the inner and outer end faces of the planar coil spring 8 are respectively connected and fixed to the drive shaft 6 and the planar coil spring housing 7; a bottom cover 9 is bolted to the bottom surface of the planar coil spring housing 7; a hollow connecting housing 10 is connected to the side of the winding reel housing 4; the end of the connecting rope 11 away from the winding reel 5 passes through the connecting housing 10 and is connected to a connecting plate 12; there is a gap between the top surface of the Hall sensor 2 and the top cover 1, allowing the connecting plate 12 to be connected to the external measuring device, thus providing conditions for the use of the dual Hall magnetic induction sensor with the rope inside.

[0033] To prevent the cord from coming loose, the top and bottom surfaces of the reel 5 make rotational friction contact with the reel housing 4 and the flat spring housing 7, respectively. This allows the reel 5 to be located within the inner cavity of the reel housing 4, where it takes in and releases the connecting rope 11. This protects the connecting rope 11 and prevents it from coming loose. The material of the connecting rope 11 can be selected according to actual usage requirements. During the rotation of the reel 5, the drive shaft 6 rotates. When the reel 5 releases the connecting rope 11, the drive shaft 6 winds up and tightens the flat spring 8 under the combined action of the drive shaft 6, the flat spring 8, and the flat spring housing 7. When the reel 5 needs to take in the connecting rope 11, the elastic tension provided by the flat spring 8 allows the reel 5 to take in the connecting rope 11 during its rotation.

[0034] To achieve more accurate Hall effect sensing, when the winding reel 5 rotates, it drives the transmission shaft 6 to rotate. The connecting gear meshes with the second transmission gear, which in turn drives the positioning gear to rotate. The positioning gear meshes with the first transmission gear, causing the two magnetic blocks to rotate during the transmission process. With the cooperation of the Hall effect sensing device 2, dual Hall effect sensing is achieved, making the Hall effect sensing more accurate and reliable.

[0035] The Hall sensor 2 is existing technology. Its working principle, size and model are irrelevant to the function of this application, so they will not be described in detail. The control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0036] Working principle

[0037] The pull rope has a dual Hall magnetic induction sensor inside. When the user uses it, the connecting plate 12 is connected to the external measuring device, and the connecting rope 11 can be pulled to realize the winding reel 5 to release the connecting rope 11. The top and bottom surfaces of the winding reel 5 respectively make rotational friction contact with the winding reel housing 4 and the flat coil spring housing 7. With the cooperation of the connecting housing 10, the connecting rope 11 is prevented from detaching.

[0038] When it is necessary to wind up the connecting rope 11, the flat coil spring 8 of the drive shaft 6 provides elastic tension, so that the connecting rope 11 is wound up during the rotation of the winding reel 5.

[0039] During the rotation of the winding reel 5, the transmission shaft 6 is driven to rotate. During the transmission process, the two magnetic blocks contained in the dual Hall magnetic induction module 3 rotate, so that the Hall sensing device 2 receives the magnetic field changes of the two magnetic blocks, realizing the dual Hall magnetic induction function, making the Hall sensing more accurate and reliable.

[0040] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual Hall effect magnetic induction sensor with an internal pull cord, characterized in that, include: The top cover (1) has a concave bottom, and a Hall sensor (2) is provided at the lower part of the top cover (1); The cable reel housing (4) has a concave bottom. The inner cavity of the cable reel housing (4) is provided with a cable reel (5). A connecting rope (11) is connected to the side of the cable reel (5). A drive shaft (6) is embedded and fixedly connected to the top surface of the cable reel (5). A connecting gear is connected to the top surface of the drive shaft (6). A dual Hall magnetic induction module (3) is set on the upper part of the winding reel shell (4). The dual Hall magnetic induction module (3) includes a fixing plate and two magnetic blocks. The top surface of the fixing plate is rotatably connected to two gear shafts through bearings. The two gear shafts are respectively connected to a transmission gear one and a transmission gear two on their sides. The transmission gear one meshes with a positioning gear. The top surface of the positioning gear is connected to the transmission gear two. The top surfaces of the two gear shafts are respectively embedded and fixedly connected to two magnetic blocks. The connecting gear meshes with the transmission gear two.

2. The dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 1, characterized in that: The bottom surface of the fixing plate is connected and fixed to the outer shell (4) of the winding reel by bolts, and the inner top wall of the outer shell (4) is rotatably connected to the drive shaft (6).

3. A dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 2, characterized in that: The bottom surface of the Hall sensor (2) is fixed to the fixing plate by bolts, and there is a gap between the top surface of the two magnetic blocks and the Hall sensor (2).

4. A dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 3, characterized in that: The bottom surface of the upper cover (1) is connected to the outer shell (4) of the winding reel by bolts, and there is a gap between the inner wall of the outer shell (4) of the winding reel and the winding reel (5).

5. A dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 4, characterized in that: The transmission shaft (6) is rotatably connected to a flat coil spring housing (7) with a concave bottom via a bearing on its side, and a flat coil spring (8) is connected to the inner wall of the flat coil spring housing (7).

6. A dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 5, characterized in that: The bottom surface of the drive shaft (6) is connected to the planar coil spring (8), and the bottom surface of the planar coil spring housing disc (7) is connected to the bottom cover (9) by bolts. The side of the coil housing (4) is connected to the hollow connecting housing (10).

7. A dual Hall effect magnetic induction sensor with an internal pull cord as described in claim 6, characterized in that: The end of the connecting rope (11) away from the winding reel (5) passes through the connecting housing (10) and is connected to the connecting plate (12). There is a gap between the top surface of the Hall sensor (2) and the top cover (1).

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