Forklift speed acquisition device

Abstract

The utility model discloses a forklift speed acquisition device, specifically relates to forklift accessory technical field, including the inductive ring of installing on the forklift wheel hub inner side wall and the collection seat of being located inductive ring one side, is equipped with detachable collection unit on the collection seat, and the inductive ring is circular and is equipped with at least three permanent magnet post, and the interval between three permanent magnet posts is all not same, and the collection unit is to permanent magnet post one side, drives inductive ring and permanent magnet post rotation when forklift wheel rotation. The utility model discloses through two -segment type inductive ring design realizes the convenient installation of not needing to dismantle the wheel, and with the permanent magnet post of unequal distance distribution can synchronous accurate acquisition wheel speed and positive and negative rotation information, and the screw hole on inductive ring is convenient for permanent magnet post nimble replacement and quantity adjustment, and the heat dissipation through -hole of collection seat can avoid the influence performance of collection unit because of heating, and the bent protective plate can protect collection unit from sundries and the collision damage.

Description

Technical Field

[0001] This utility model relates to the field of forklift accessories technology, and more specifically, to a forklift speed acquisition device. Background Technology

[0002] Current forklift speed acquisition devices mostly use integrated sensing rings, which require wheel removal during installation, making the process cumbersome and taking up forklift operation time. Most devices can only collect rotational speed and cannot determine the forward or reverse rotation of the wheels, making it difficult to adapt to the bidirectional operation requirements of forklifts. Permanent magnet columns are usually fixedly installed, and the operation is complicated or the number needs to be adjusted due to demagnetization or wear, resulting in high maintenance costs. The acquisition unit is susceptible to impact from debris in the operating environment, making it difficult to meet the requirements for long-term stable operation of forklifts. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a forklift speed acquisition device, including a sensing ring installed on the inner wall of the forklift wheel hub and a acquisition seat located on one side of the sensing ring. A detachable acquisition unit is installed on the acquisition seat. The sensing ring is circular and has at least three permanent magnet columns installed on it. The spacing between the three permanent magnet columns is different. The acquisition unit faces the permanent magnet columns. When the forklift wheel rotates, it drives the sensing ring and permanent magnet columns to rotate. The acquisition unit acquires the displacement information of the moving permanent magnet columns. A protective plate is provided above the acquisition unit to protect the acquisition unit.

[0004] In a preferred embodiment, the acquisition unit is a Hall sensor.

[0005] In a preferred embodiment, the sensing ring is composed of two semi-circular arc-shaped iron pieces, which are then joined together to form a ring shape, and the pieces are welded to the inner wall of the wheel hub.

[0006] In a preferred embodiment, each of the two iron plates has a plurality of screw holes, and the spacing between adjacent screw holes on the two iron plates is the same. The outer wall of the permanent magnet column is provided with threads that mate with the screw holes, and the permanent magnet column is installed in the screw holes on the iron plates through the threads.

[0007] In a preferred embodiment, the inside of the collection base is provided with a plurality of heat dissipation holes evenly distributed.

[0008] In a preferred embodiment, bolts for fixing are passed through both sides of the acquisition unit, and the bolts pass through the acquisition base to fix the acquisition unit on the acquisition base.

[0009] In a preferred embodiment, the protective plate is fixedly welded to the surface of the acquisition base and is bent, with the top of the protective plate located directly above the acquisition unit.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] This utility model achieves convenient installation without disassembling the wheel through a two-section induction ring design. With the help of unequally spaced permanent magnet columns, the wheel speed and forward / reverse rotation information can be obtained synchronously and accurately. The screw holes on the induction ring facilitate the flexible replacement and quantity adjustment of the permanent magnet columns. The heat dissipation holes of the acquisition base can prevent the acquisition unit from being affected by heat. The bent protective plate can protect the acquisition unit from debris and collision damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the installation position of this utility model on the forklift assembly;

[0013] Figure 2 This utility model Figure 1 Detailed diagram of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the installation of this utility model at the forklift wheel.

[0015] Explanation of reference numerals in the attached diagram: 1 Forklift, 2 Wheel, 3 Induction ring, 4 Data acquisition base, 5 Data acquisition unit, 6 Permanent magnet column, 7 Protective plate, 8 Iron sheet, 9 Screw hole, 10 Heat dissipation hole, 11 Bolt. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0017] like Figure 1-3 The forklift speed acquisition device shown includes a sensing ring 3 installed on the inner wall of the forklift wheel hub and an acquisition seat 4 located on one side of the sensing ring 3. A detachable acquisition unit 5 is installed on the acquisition seat 4. The acquisition unit 5 is a Hall sensor. The sensing ring 3 is circular and has at least three permanent magnet posts 6 installed. The spacing between the three permanent magnet posts 6 is different. The acquisition unit 5 faces the permanent magnet posts 6. When the forklift wheel 2 rotates, it drives the sensing ring 3 and the permanent magnet posts 6 to rotate. The acquisition unit 5 acquires the displacement information of the moving permanent magnet posts 6. A protective plate 7 is provided above the acquisition unit 5 to protect the acquisition unit 5.

[0018] Based on the above, after the forklift starts, the wheel 2 drives the hub to rotate synchronously. Since the sensing ring 3 is fixed to the inner wall of the hub, the sensing ring 3 rotates with the hub, thereby driving at least three unequally spaced permanent magnet columns 6 on the ring to perform circular motion. When the permanent magnet columns 6 rotate, they will periodically approach or move away from the Hall sensors facing them. The sensors continuously acquire the displacement information of the permanent magnet columns 6 through this magnetic field change, converting it into continuous high and low level pulse signals. After processing the high and low level pulse signals, the rotation speed and forward and reverse rotation information of the forklift wheel 2 are obtained. At the same time, the protective plate 7 above the acquisition unit 5 is always directly above it, blocking dust, gravel and other debris generated during operation and preventing them from touching the sensors.

[0019] The sensing ring 3 is composed of two semi-circular arc-shaped iron pieces 8. The two pieces are combined to form a ring, and the pieces are welded to the inner wall of the hub.

[0020] Based on the above, when installing the induction ring 3, it is not necessary to disassemble the forklift wheel 2. First, attach the two semi-circular arc-shaped iron pieces 8 from the side of the rim to the inner wall of the hub. Adjust the relative positions of the two iron pieces 8 so that they are spliced ​​into a complete ring. After confirming that the position is accurate, use welding to fix the two iron pieces 8 to the inner wall of the hub, ensuring that the welding point is firm and not loose. When the forklift wheel 2 rotates, the welded and fixed iron pieces 8 rotate synchronously with the hub without relative displacement, ensuring that the movement trajectory of the permanent magnet column 6 on the ring is stable and without deviation.

[0021] Furthermore, the two-section structure overcomes the limitation that "the integral sensing ring 3 requires the removal of the wheel 2 for installation", simplifying the installation process and reducing the downtime of the forklift due to the installation device; the welding fixing method ensures a rigid connection between the sensing ring 3 and the wheel hub, avoiding magnetic field position deviation caused by loosening during rotation, and improving detection stability.

[0022] Both iron plates 8 have several screw holes 9, and the spacing between adjacent screw holes 9 on the two iron plates 8 is the same. The outer wall of the permanent magnet column 6 is provided with threads that mate with the screw holes 9. The permanent magnet column 6 is installed in the screw holes 9 on the iron plate 8 through the threads.

[0023] Based on the above, when installing the permanent magnet column 6, according to the core requirement of "at least three with unequal spacing", select different positions of the screw holes 9 in the "adjacent spacing is the same" screw holes 9 of the two iron pieces 8, and slowly screw the permanent magnet column 6 into the selected screw hole 9 through the outer wall thread until it is tightened and fixed, forming an unequal distribution of L1≠L2≠L3; when the permanent magnet column 6 demagnetizes or wears due to long-term use, it is not necessary to disassemble the entire sensing ring 3, but only to rotate the old magnet column in the opposite direction to disengage it from the screw hole 9, and then screw the new magnet column into the corresponding screw hole 9 to complete the replacement; furthermore, if it is necessary to improve the low-speed detection accuracy, the number of magnet columns in the screw hole 9 can be increased to increase the number of pulse signals per revolution.

[0024] Among them, the screw holes 9 with the same adjacent spacing provide flexible installation conditions for the "unequal distribution" of permanent magnet columns 6, accurately matching the design requirements for forward and reverse rotation judgment; the threaded connection enables quick assembly and disassembly of the magnet columns, reducing maintenance costs; the number of magnet columns can be adjusted to adapt to different speed detection accuracies, improving the adaptability of the device to different scenarios.

[0025] The acquisition base 4 has a number of heat dissipation holes 10 evenly distributed inside. When the acquisition unit 5 is working, the internal electronic components will generate heat. The heat is conducted to the acquisition base 4 through the contact surface between the acquisition unit 5 and the acquisition base 4. The heat dissipation holes 10 evenly distributed inside the acquisition base 4 form an air circulation channel. Outside cold air can enter the acquisition base 4 through the holes and exchange heat with the heat-generating parts, carrying the heat out of the acquisition base 4. This effectively solves the problem of heat generation when the acquisition unit 5 is working, prevents "trigger threshold drift" caused by high temperature, and ensures the accuracy of pulse signal output.

[0026] The acquisition unit 5 has bolts 11 for fixing through both sides. The bolts 11 pass through the acquisition base 4 to fix the acquisition unit 5 on the acquisition base 4. When installing the acquisition unit 5, first align the Hall sensor with the installation position of the acquisition base 4, so that the bolt holes 11 on both sides of the sensor are aligned with the corresponding holes of the acquisition base 4, and ensure that the sensor sensing surface faces the permanent magnet column 6. Then, pass the bolt 11 through the sensor side, through the acquisition base 4, and tighten it with a nut. The axial pressure of the bolt 11 will firmly fix the sensor on the acquisition base 4. At the same time, adjust the tightness of the bolt 11 to ensure that the gap between the sensor and the permanent magnet column 6 is controlled within 0.5-2mm. When the sensor malfunctions, loosen the bolt 11 and nut to remove the sensor from the acquisition base 4, replace it with a new sensor, and then fix it with bolt 11 again to restore the detection function.

[0027] The protective plate 7 is fixedly welded to the surface of the acquisition base 4 and is bent. The top of the protective plate 7 is located directly above the acquisition unit 5. The protective plate 7 is fixed to the surface of the acquisition base 4 by welding. The angle and length of the bent structure are designed so that its top is exactly above the acquisition unit 5, forming a shield that is open at the bottom and covered from above. When a forklift is operating in a dusty warehouse, construction site, or other similar environment, dust in the air and debris raised from the ground are blocked by the protective plate 7 and cannot fall directly onto the surface of the acquisition unit 5. If a slight collision occurs when handling goods, the protective plate 7 will absorb the impact force first, preventing direct damage to the acquisition unit 5. At the same time, the bent design does not block the magnetic field path between the acquisition unit 5 and the permanent magnet column 6, and does not affect the magnetoelectric conversion process of "magnet column approaching - sensor triggering". This allows the protective plate 7 to effectively block debris and external collisions without interfering with the detection function, protecting the core components of the acquisition unit 5. The welding fixation ensures the firmness of the protective plate 7, making it less likely to fall off after long-term use and continuously providing protection.

[0028] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A forklift speed acquisition device, characterized in that, It includes a sensing ring installed on the inner wall of the forklift wheel hub and a data acquisition seat located on one side of the sensing ring. The data acquisition seat is equipped with a detachable data acquisition unit. The sensing ring is circular and has at least three permanent magnet columns installed. The spacing between the three permanent magnet columns is different. The data acquisition unit faces the permanent magnet columns. When the forklift wheel rotates, it drives the sensing ring and permanent magnet columns to rotate. The data acquisition unit acquires the displacement information of the moving permanent magnet columns. A protective plate is set above the data acquisition unit to protect the data acquisition unit.

2. The forklift speed acquisition device according to claim 1, characterized in that: The acquisition unit is a Hall sensor.

3. The forklift speed acquisition device according to claim 2, characterized in that: The sensing ring is composed of two semi-circular arc-shaped iron pieces. The two pieces are joined together to form a ring, and the pieces are welded to the inner wall of the wheel hub.

4. The forklift speed acquisition device according to claim 3, characterized in that: Both iron plates have several screw holes, and the spacing between adjacent screw holes on both iron plates is the same. The outer wall of the permanent magnet column is provided with threads that mate with the screw holes. The permanent magnet column is installed in the screw holes on the iron plates through the threads.

5. The forklift speed acquisition device according to claim 1, characterized in that: The inside of the data acquisition base is evenly provided with several heat dissipation holes.

6. The forklift speed acquisition device according to claim 5, characterized in that: Bolts for fixing are inserted through both sides of the acquisition unit, and the bolts pass through the acquisition base to fix the acquisition unit on the acquisition base.

7. A forklift speed acquisition device according to claim 6, characterized in that: The protective plate is fixedly welded to the surface of the acquisition base and is bent, with the top of the protective plate located directly above the acquisition unit.

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