Magnetic leveling device of pendulum bob type laser demarcation device

Abstract

The utility model discloses a magnetic leveling device of a pendulum bob type laser demarcation device, which comprises a hanging bracket and a pendulum body hung in the hanging bracket, a magnetic damping body consisting of a plurality of magnets is arranged on the hanging bracket according to a Halbach array, and a magnetic field which is made of non-magnetic conductive materials and can cut magnetic lines in a magnetic field generated by the magnetic damping body is arranged on the pendulum body. The utility model aims to provide a damping piece which adopts two different forms of Halbach arrays to generate magnetic damping, and compared with the existing common magnet arrangement scheme, the magnetic flux is obviously enhanced, so that a stronger magnetic damping effect is generated, and the magnetic damping effect is improved. The magnetic leveling device can effectively prevent the swinging body from swinging excessively, so that the leveling time is effectively shortened, the leveling speed and precision of the laser demarcation device are further improved, and the working efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of laser level accessories, in particular to a magnetic leveling device for a pendulum-type laser leveler. Background Art

[0002] A laser level, also known as a laser projector, is a tool that uses a laser beam to assist in horizontal and vertical measurements. It is widely used in fields such as construction and renovation that require precise measurements. Traditional levels rely on the balance principle of a bubble tube to determine horizontality. While simple to operate, they offer low accuracy and are susceptible to user angles. Laser levels, on the other hand, use electronic components to generate a laser beam, enabling them to maintain high horizontal or vertical accuracy over longer distances, significantly improving work efficiency.

[0003] One of the core functions of a laser level is automatic leveling, meaning it can quickly adjust and maintain a level position after placement. Common leveling methods include manual and automatic leveling. Manual leveling relies on the user adjusting the instrument's tripod or base to ensure the device is level. Automatic leveling, on the other hand, uses gravity to allow the pendulum to hang freely and naturally droop to find its vertical orientation, thereby automatically leveling the level. This leveling method is simple to operate and does not require complex electronic sensors, but it does have certain limitations.

[0004] While existing laser levels can achieve automatic leveling, their leveling speed and vibration resistance still need to be improved. First, the pendulum structure that relies on gravity for leveling is often affected by external vibrations, tilt, or environmental factors during operation, causing the pendulum to continuously oscillate. Due to the inertia of the pendulum's oscillation, the leveling process can be slow, making it difficult to quickly reach a stable state. This delayed leveling response affects the practicality of laser levels in work scenarios that require rapid deployment or frequent adjustments. Second, gravity-based leveling methods can easily cause the pendulum to enter a state of continuous oscillation when encountering even small vibrations or tilt, causing the leveler to take longer to stabilize. This not only reduces work efficiency but can also cause the laser projection line to temporarily deviate during the oscillation, affecting measurement accuracy. This drawback is particularly prominent in precision construction or surveying tasks. Furthermore, gravity-based leveling methods have certain requirements for the working environment. Under extreme conditions, such as large tilt angles or strong environmental vibrations, the pendulum may have difficulty returning to a horizontal state, causing the laser level to malfunction.

[0005] Therefore, while gravity leveling is simple and easy to implement, its performance in terms of rapid leveling and stability is still insufficient, making it unsuitable for certain applications requiring high efficiency and precision. Improving the leveling efficiency of laser levels and accelerating the stabilization of the pendulum has become a key area of ​​technical improvement in the industry. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetic leveling device for a pendulum-type laser line projector, which can reduce the leveling time and improve the work efficiency without manual adjustment, and avoid the influence of external vibration or uneven placement on the accuracy of the laser line.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: a magnetic leveling device for a pendulum-type laser line projector, comprising:

[0008] A hanger, which is installed in the laser line projector;

[0009] A pendulum suspended in the hanger, the pendulum being capable of swinging in the front, back, left, and right directions, and having a plurality of laser emission modules mounted on the pendulum;

[0010] A magnetic damper, the magnetic damper being composed of a plurality of magnets arranged in a Halbach array and disposed on the hanger;

[0011] The damping member is arranged on the pendulum body and is made of non-magnetic conductive material. It can cut the magnetic lines of force in the magnetic field generated by the magnetic damping body, thereby generating eddy currents and providing a damping effect to prevent the pendulum body from swinging excessively and achieve rapid leveling.

[0012] Traditional pendulum leveling methods often result in prolonged swing times due to inertia. However, the magnetic damper, using a Halbach array of magnets, effectively enhances the magnetic flux (magnetism) of the magnetic damping system compared to existing conventional magnet arrangements, resulting in a greater magnetic damping effect. This array's action causes the conductor (damping element) to cut through the magnetic flux lines, generating a Lorentz force in the opposite direction of the conductor's motion, inhibiting excessive swing of the pendulum. This force significantly reduces pendulum leveling time, allowing the pendulum to return to a stable position more quickly, resulting in a more efficient automatic leveling process. This optimized magnetic field distribution significantly improves the overall leveling efficiency of the device, enhancing both operational efficiency and the pendulum's resistance to external interference in various directions, thereby ensuring stable horizontal and vertical accuracy of the laser line.

[0013] As a preferred solution of the present invention, the hanger is composed of an upper hanger and a lower support seat spaced apart from each other, and a support column connected between the upper hanger and the lower support seat, and the pendulum body is mounted on the upper hanger through a cross axis. This solution provides a more stable support structure. The cross axis design allows the pendulum body to swing more accurately around the center point, ensuring that the swing amplitude of the pendulum body in any direction remains consistent, thereby helping to achieve higher horizontal accuracy and stability. In addition, the upper and lower distribution between the upper hanger and the lower support seat enhances the structural strength of the entire device and prevents external vibrations from affecting the leveling effect of the equipment.

[0014] As a further advantageous feature of the present invention, the damping element is mounted in an annular configuration at the bottom end of the pendulum. This annular structure ensures more uniform force distribution and magnetic field distribution across the damping element, enhancing the generation of eddy currents and thus more effectively suppressing the pendulum's swing. This design extends the coverage of the damping effect, making the leveling process more stable and rapid.

[0015] In a preferred embodiment of the present invention, the damping element is made of copper. As a highly conductive, non-magnetic material, copper more effectively generates eddy currents, enhancing the damping effect. Compared to other metal materials, the copper damping element responds quickly to changes in the magnetic field of the magnetic damper, further shortening the pendulum's leveling time and improving operating efficiency.

[0016] As a further aspect of this invention, the magnetic damper is composed of a plurality of magnets arranged in a Halbach array, arranged in a circular pattern on the lower support base below the damper. This Halbach array arrangement of magnets surrounding the base of the pendulum allows the magnetic field to be more concentrated and symmetrically applied to the damper below the pendulum, increasing its strength and uniformity. This design optimizes eddy current generation, further improving leveling speed and reducing pendulum swing time.

[0017] As a preferred embodiment of the present invention, the magnets are neodymium iron boron magnets. Neodymium iron boron magnets, with their high magnetic energy product and strong magnetic properties, are ideal magnetic damping materials. Using neodymium iron boron magnets ensures a strong magnetic field within a relatively small volume, thereby improving the performance of the entire magnetic damping body and further enhancing the leveling efficiency of the system.

[0018] As a preferred embodiment of the present invention, an extension platform is provided on one side of the pendulum body. The bottom surface of the extension platform forms a downwardly inclined surface, which is angled outward. The damping element is annularly attached to the downwardly inclined surface. The downwardly inclined surface at the bottom of the extension platform allows the damping element to be stably attached to the inclined surface, ensuring a more concentrated magnetic field cutting effect. This helps prevent excessive swing of the pendulum body and enhances the leveling performance of the device.

[0019] As a further embodiment of the present invention, an upwardly projecting boss is provided on the top of the lower support base. The boss's top surface forms an upper slope parallel to the lower slope, and the magnetic damper is mounted on the upper slope. This boss and slope design optimizes the magnetic field interaction between the magnetic damper and the damping element. The slope creates a stable magnetic field area, effectively suppressing the pendulum's swing and improving the leveling response speed.

[0020] As a preferred embodiment of the present invention, the magnetic damper comprises a plurality of magnets arranged linearly on the upper inclined surface in a Halbach array configuration. Compared to a circular Halbach array, the linear array design allows for a more directional magnetic field, particularly in certain swing directions, enhancing the damping effect and further improving leveling accuracy and speed.

[0021] As a further aspect of the present invention, a gap is provided between the magnetic damping body and the damping element. This appropriate gap allows for smoother relative motion between the damping element and the magnetic damping body. This appropriate distance reduces friction or interference, ensuring the continuity and stability of the damping effect while also avoiding wear and tear caused by mechanical contact.

[0022] In summary, the beneficial effects of the present invention compared to the prior art are as follows: the present invention adopts two different forms of Halbach arrays to generate magnetic damping design, which significantly enhances the magnetic flux compared to the existing ordinary magnet arrangement scheme, thereby generating a stronger magnetic damping effect, thereby effectively shortening the leveling time.

[0023] First, the magnets, arranged in a circular Halbach array around the pendulum on the lower support, create a more concentrated and symmetrical magnetic field. This symmetrical magnetic field distribution ensures consistent magnetic damping in all directions, effectively preventing excessive pendulum swing and enabling rapid leveling. This design is particularly suitable for applications requiring multi-directional leveling. This design also reduces the impact of external interference on the pendulum in any one direction, further improving the device's anti-interference capabilities and leveling accuracy.

[0024] On the other hand, magnets arranged in a linear Halbach array offer greater directionality, making them suitable for providing enhanced damping in specific swing directions. This linear arrangement of magnets, aligned with the pendulum's primary swing direction, concentrates and enhances magnetic field strength, resulting in a faster, more effective damping effect. This is particularly useful for rapid leveling of the pendulum, either forward or backward or left and right. Compared to a circular array, a linear array design is more suitable for achieving a faster response in specific motion directions, improving both speed and efficiency.

[0025] Overall, the circular Halbach array arrangement of magnetic dampers provides comprehensive magnetic damping, suitable for multi-directional leveling, while the linear Halbach array provides a more concentrated damping effect in a specific direction. These two solutions enhance the flexibility and efficiency of the leveling system in different application scenarios, further improving the leveling speed and accuracy of the laser line projector and significantly enhancing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional cross-sectional view of the first embodiment of the present utility model.

[0027] Figure 2 for Figure 1 Magnified view of point A in the middle.

[0028] Figure 3 This is an exploded view of the first embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the magnets of the magnetic damper in the first embodiment of the present invention being arranged in a ring according to the Halbach array.

[0030] Figure 5 This is a three-dimensional view of the second embodiment of the present utility model.

[0031] Figure 6 This is one of the exploded views of the second embodiment of the present invention.

[0032] Figure 7 This is the second exploded view of the second embodiment of the present invention.

[0033] Figure 8 for Figure 7 An enlarged view of point B in the middle, and a schematic diagram of the magnets of the magnetic damper in the second embodiment being arranged in a straight line according to the Halbach array.

[0034] Explanation of the accompanying drawings: 1. hanger; 2. pendulum body; 3. damping element; 4. magnetic damping body; 11. boss; 12. upper inclined surface; 13. upper hanger; 14. lower support seat; 15. support column; 16. supporting ring; 17. rectangular groove; 21. extension platform; 22. lower inclined surface; 23. screw hole; 24. screw; 41. mounting ring; 42. deep groove. DETAILED DESCRIPTION

[0035] The following detailed description provides various embodiments or examples for implementing the present invention. These are, of course, merely examples and are not intended to be limiting. Furthermore, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. Such repetition is for simplicity and clarity in describing the present invention and does not imply a specific relationship between the various embodiments and / or configurations discussed.

[0036] In addition, spatially related terms may be used, such as "below," "lower side," "from the inside out," "above," "upper side," and similar terms. These terms are used to facilitate the description of the relationship between one element or feature and another element or feature in the drawings. These spatially related terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, they cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 8 The illustrated magnetic leveling device for a pendulum-type laser line projector includes a hanger 1 installed within the laser line projector. The hanger 1 comprises an upper hanger 13 and a lower support 14, spaced apart from each other, and a support column 15 connected between the upper and lower support 13 and 14. A pendulum 2, capable of swinging in the forward, backward, left, and right directions, is suspended within the hanger 1 via a cross-axis. Because the pendulum 2 is mounted on the upper hanger 13 via the cross-axis, its four degrees of freedom are restricted, limiting its movement to the Y and X axes. Four 360-degree laser emission modules (inverted cone + laser emitter) are mounted on the pendulum 2. These 360-degree laser modules emit laser pulses, projecting parallel or perpendicular beams that the user can use for alignment and positioning. The laser modules are bolted to the pendulum 2, so the swing of the pendulum 2 affects the horizontal or vertical accuracy of the beam emitted by the laser modules. A magnetic damper 4, composed of magnets arranged in a Halbach array, is mounted on the lower support 14. A damping member 3 made of non-magnetic conductive material and used in conjunction with a magnetic damping body 4 is provided on the pendulum body 2. The damping member 3 can cut the magnetic lines of force in the magnetic field generated by the magnetic damping body 4, thereby generating eddy currents and providing a damping effect, thereby preventing the pendulum body 2 from swinging excessively, thereby achieving rapid leveling of the pendulum body 2.

[0038] Among them, such as Figures 1 to 4The first embodiment of the present invention is shown. In this embodiment, the damping element 3 is preferably made of copper and has an annular shape. It is glued to the bottom end of the pendulum 2 and moves with the swing of the pendulum 2. A through-hole is formed through the center of the lower support base 14 below the pendulum 2. A support ring 16 is provided at the bottom of the inner circumference of the through-hole. A mounting ring 41 is attached to the support ring 16 and fits against the inner circumference of the through-hole. The mounting ring 41 is made of plastic. Sixteen deep grooves 42 are arranged end-to-end along the top of the mounting ring 41. The magnetic damper 4 consists of sixteen 4x4 mm square magnets arranged in a Halbach array, each embedded in a deep groove 42. When the pendulum 2 is subjected to external vibration or impact, it will swing in the Y and X axes. The 360 ​​laser emission module connected to the pendulum 2 will swing with it, affecting the positioning and alignment of the laser beam. Since the damping element 3 made of copper sheet is a conductor, the movement of the copper sheet will cut the magnetic flux lines in the magnetic field generated by the magnetic damper 4, thereby generating a Lorentz force to hinder the movement of the copper sheet. In this embodiment, the magnet of the magnetic damper 4 adopts a Halbach array, which greatly increases the magnetic flux of the magnetic field generated, so it can generate greater magnetic damping, so that the pendulum 2 can quickly stop swinging when it swings, thereby reducing the settling time of the laser transmitter.

[0039] In addition, if Figures 5 to 8 The second embodiment of the present invention is shown. It can be clearly seen from the figure that this embodiment is basically the same as the first embodiment in the hanger 1 and the pendulum body 2 suspended in the hanger 1, and only the arrangement of the magnetic damping body 4 and the position of the magnetic damping body 4 and the damping member 3 are different. An extension platform 21 extending outward is provided on one side of the pendulum body 2, and the bottom surface of the extension platform 21 is a lower inclined surface 22 obliquely facing outward. The damping member 3 in this embodiment is also made of an annular copper sheet. In this embodiment, a screw hole 23 obliquely passing through the lower inclined surface 22 is provided. An M2X5 flat head hexagon screw 24 is passed through the hole in the center of the damping member 3 into the screw hole 23, so that the damping member 3 is fit and fixed on the lower inclined surface 22. An upwardly protruding boss 11 is provided on the top of the lower support seat 14. The top surface of the boss 11 is an upper inclined surface 12 parallel to the lower inclined surface 22. A rectangular groove 17 is provided on the upper inclined surface 12. The magnetic damping body 4 is composed of three N35 NdFeB 10x5x3mm rectangular magnets arranged in a linear array according to the Halbach array. The three N35 NdFeB rectangular magnets are glued to the rectangular groove 17 with hot melt glue. In order to allow space for relative movement between the damping member 3 and the magnetic damping body 4, a gap is provided between the magnetic damping body 4 and the damping member 3.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic leveling device for a pendulum laser line projector, characterized in that: include: A hanger (1), the hanger (1) being installed in the laser line projector; A pendulum (2) suspended in the hanger (1), the pendulum (2) being capable of swinging in the front, back, left, and right directions, and a plurality of laser emission modules being mounted on the pendulum (2); A magnetic damping body (4), the magnetic damping body (4) is composed of a plurality of magnets, and the magnets are arranged in a Halbach array and arranged on the hanger (1); A damping member (3) is provided on the pendulum body (2) and is made of a non-magnetic conductive material. The damping member (3) is capable of cutting magnetic lines of force in the magnetic field generated by the magnetic damping body (4), thereby generating eddy currents and providing a damping effect to prevent the pendulum body (2) from swinging excessively and achieve rapid leveling.

2. The magnetic leveling device of a pendulum laser line projector according to claim 1, characterized in that: The hanger (1) is composed of an upper hanger seat (13) and a lower support seat (14) spaced apart from each other, and a support column (15) connected between the upper hanger seat (13) and the lower support seat (14). The pendulum body (2) is mounted on the upper hanger seat (13) via a cross axis.

3. The magnetic leveling device of a pendulum laser line projector according to claim 2, characterized in that: The damping member (3) is in an annular structure and is mounted on the bottom end of the pendulum body (2).

4. The magnetic leveling device for a pendulum laser line projector according to claim 3, characterized in that: The damping member (3) is made of metallic copper.

5. A magnetic leveling device for a pendulum laser line projector according to any one of claims 2 to 4, characterized in that: The magnetic damping body (4) is composed of a plurality of magnets arranged in a surrounding manner according to a Halbach array and is arranged on a lower support seat (14) below the damping member (3).

6. The magnetic leveling device for a pendulum laser line projector according to claim 5, characterized in that: The magnet is a neodymium iron boron magnet.

7. The magnetic leveling device for a pendulum laser line projector according to claim 2, characterized in that: An extension platform (21) is provided on one side of the pendulum body (2), the bottom surface of the extension platform (21) is a lower inclined surface (22) inclined outward, and the damping member (3) is annularly attached to the lower inclined surface (22).

8. The magnetic leveling device for a pendulum laser line projector according to claim 7, characterized in that: An upwardly protruding boss (11) is provided on the top of the lower support seat (14); the top surface of the boss (11) is an upper inclined surface (12) parallel to the lower inclined surface (22); and the magnetic damping body (4) is mounted on the upper inclined surface (12).

9. The magnetic leveling device for a pendulum laser line projector according to claim 8, characterized in that: The magnetic damping body (4) is composed of a plurality of magnets mounted on the upper inclined surface (12) in a linear array according to a Halbach array.

10. A magnetic leveling device for a pendulum laser line projector according to claim 7 or 8, characterized in that: There is a gap between the magnetic damping body (4) and the damping member (3).

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