A magnetic cutting vibration reduction device

Abstract

The present invention discloses a magnetic cutting vibration reduction device, including a load-bearing platform, a gear at the bottom of the load-bearing platform, a gear ring, a permanent magnet, a fan blade, a base, a transmission shaft, a rectangular sheet, a self-resetting spring, a rotating shaft, and a circular ring. The present invention achieves the purpose of vibration reduction by cutting magnetic flux lines to generate a damping force. An instrument is placed on the top plate of the load-bearing platform. When the instrument is bumped and vibrated, the transmission shaft is driven to rotate by the gear at the bottom of the load-bearing platform. The fan blade fixed on the transmission shaft is in a closed loop of the magnetic field. Since it cuts the magnetic flux lines as the transmission shaft rotates, its rotation will be hindered, thereby achieving vibration reduction of the instrument. The present invention is simple to manufacture, has a long service life, and has a good anti-vibration effect. Each component is easy to disassemble and replace, which can extend the service life of the device and reduce the risk of failure due to local damage to the device. It can meet the requirements of vibration reduction and vibration reduction in various complex environments.

Description

Technical Field

[0001] The invention relates to the field of vibration reduction of instruments and equipment, and in particular to a magnetic cutting vibration reduction device. Background Art

[0002] At present, the commonly used methods for vibration reduction of instruments and equipment are pneumatic vibration reduction, hydraulic vibration reduction and mechanical vibration reduction, as well as their combination. However, pneumatic vibration reduction devices and hydraulic vibration reduction devices have high maintenance costs, complex structures, and are not suitable for small instruments and equipment. In addition, changes in the surrounding environment can easily weaken their anti-vibration effect. Mechanical vibration reduction devices are easily worn out due to vibration during use, and their service life is often short, the noise is loud, and their vibration reduction ability is weak.

[0003] Patent No. ZL 200520091909.9 discloses a novel magnetic shock absorber, which uses a shock absorber tube and a shock absorber rod to fix a permanent magnet, so that when the shock absorber rod is subjected to force, the sliding magnet is in the middle of the upper and lower end magnets, changing the original magnet spacing and forming a magnetic damping force through the magnets to achieve the purpose of vibration reduction. The disadvantage of this device is that it is relatively complicated to manufacture and the replacement of parts is cumbersome, which is not conducive to large-scale application.

[0004] Announcement No. CN 206145051 U discloses an active magnetic vibration reduction device, including a permanent magnet, a controllable electromagnet, a displacement sensor, and a control circuit part of the electromagnet and the displacement sensor, which plays the role of automatically detecting the vibration amplitude, actively adjusting the electromagnetic damping force, buffering the impact, and reducing the vibration. The disadvantage of this device is that the control circuit requires program writing and the use of a circuit board, which invisibly increases the cost of the device and is not easy to replace parts.

[0005] In view of the above situation, a magnetic levitation vibration reduction device with simple structure, good vibration reduction effect, long service life, simple maintenance, easy replacement of parts, low cost and low noise is proposed. The two internal magnets are arranged with opposite poles to provide a closed magnetic circuit to produce vibration reduction effect, which has good application prospects. Summary of the invention

[0006] The purpose of the present invention is to provide a magnetic cutting vibration reduction device to solve the problems of high cost, high noise, complex production process, difficult maintenance and poor vibration reduction effect of commonly used vibration reduction devices.

[0007] To achieve the above purpose, the present invention discloses a magnetic cutting vibration reduction device, including a load-bearing platform, a gear at the bottom of the load-bearing platform, a gear ring, a permanent magnet, a fan blade, a base, a transmission shaft, a rectangular sheet, a self-resetting spring, a rotating shaft, and a circular ring. The instrument is placed on the top plate of the load-bearing platform. When the instrument is bumped and vibrated, the transmission shaft is driven to rotate through the gear at the bottom of the load-bearing platform, and the rotation of the fan blade fixed on the transmission shaft in the magnetic field will be hindered, thereby achieving vibration reduction of the instrument equipment.

[0008] As a preferred technical solution of the present invention, the load-bearing platform is an inverted steel U-shaped plate, and its top plate is used to place the instrument. The bottom of the two side plates are provided with ears by welding, which are used for welding the gears at the bottom of the load-bearing platform. Cantilevers are provided on the left and right sides of the load-bearing platform, and their length should be longer than the height of the load-bearing platform and shorter than the length from the top plate of the load-bearing platform to the bottom plate of the base, so as to weld the self-resetting spring. The bottom gear of the load-bearing platform is welded on the bottom surface under the ears, and the bottom gear of the load-bearing platform is meshed with the gear ring on the transmission shaft, and the vibration of the instrument is transmitted to the transmission shaft through the bottom gear on the load-bearing platform and the gear ring on the transmission shaft. Finally, the inner wall of the U-shaped plate is treated with anti-friction to reduce the loss of the permanent magnet and the U-shaped plate caused by friction during use.

[0009] As a preferred technical solution of the present invention, the base is a steel box with an upper opening. Holes are symmetrically arranged on the vertical plates on both sides of the base, and the hole diameter is slightly larger than the outer diameter of the transmission shaft for the transmission shaft to penetrate.

[0010] As a preferred technical solution of the present invention, the rectangular thin sheet is made of steel and is fixed to the bottom plate of the base by symmetrical welding. The space left between the rectangular thin sheet and the inner wall of the base matches the permanent magnet for fixing the permanent magnet, and the gap between the two rectangular thin sheets ensures that the fan blades will not touch the permanent magnet during rotation.

[0011] As a preferred technical solution of the present invention, the permanent magnets are in the shape of two rectangular parallelepipeds of the same size and shape, and the two permanent magnets are respectively embedded between the rectangular sheet and the inner wall of the base, and holes are reserved thereon for the transmission shaft to penetrate. At the same time, the two permanent magnets should be placed in a manner of being opposite to each other at different levels, and when the transmission shaft drives the fan blades to rotate, it cuts the magnetic flux lines to form a damping force, hindering the movement of the fan blades, thereby achieving vibration reduction of the instrument and equipment.

[0012] As a preferred technical solution of the present invention, the gear ring is cut from an annular steel pipe, a thread is arranged on the inner wall thereof, and the inner diameter of the gear ring matches the outer diameter of the rotating shaft, so that the gear ring can be screwed into the twisted wire end of the rotating shaft and fixed thereto to form a whole, and the gear cut from the outside of the gear ring meshes with the gear at the bottom of the load-bearing platform.

[0013] As a preferred technical solution of the present invention, the transmission shaft is composed of a gear ring and a rotating shaft. The rotating shaft is a steel round tube, with twisted wires at both ends, and a gear ring is screwed into each end. The length of the untwisted wire portion in the middle of the rotating shaft is slightly longer than the width of the base to avoid contact between the gear ring and the outer wall of the base. After the rotating shaft passes through the holes reserved in the base and the permanent magnet, a gear ring is screwed into each of its left and right ends to form a whole, and the gear ring is meshed with the gear at the bottom of the bearing platform.

[0014] As a preferred technical solution of the present invention, the fan blades are steel fan blades. After the rotating shaft passes through the holes reserved in the base and the permanent magnet, they are fixed in the middle position of the transmission shaft under the premise of symmetry on the left and right sides of the transmission shaft. After fixing, the fan blades can rotate with the rotation of the transmission shaft.

[0015] As a preferred technical solution of the present invention, one end of the self-resetting spring is welded to the cantilever plate of the load-bearing platform, and the other end is welded to the side wall of the base. Two self-resetting springs are symmetrically welded on both sides of the load-bearing platform and the base.

[0016] As a preferred technical solution of the present invention, the circular ring is a steel ring, whose inner diameter is slightly larger than the outer diameter of the transmission shaft, and whose outer diameter is larger than the diameter of the hole reserved for the permanent magnet. After the rotating shaft is inserted into the hole reserved on one side of the permanent magnet and the base, the circular ring is inserted into the rotating shaft, and then inserted into the hole reserved on the other side of the permanent magnet and the base. Finally, the circular ring is fixed to the outer wall of the rotating shaft where the rotating shaft and the permanent magnet are connected to prevent the transmission shaft from sliding, and the circular ring is subjected to anti-friction treatment to reduce the wear of the circular ring and the permanent magnet.

[0017] Compared with the prior art, the invention has the following beneficial effects: the vehicle-mounted vibration reduction device has simple manufacturing and installation of device accessories and low cost. The gear at the bottom of the load-bearing platform drives the transmission shaft to rotate, and the rotation of the fan blades fixed on the transmission shaft in the magnetic field is hindered, thereby achieving vibration reduction of the instrument and equipment. At the same time, the self-resetting springs on both sides of the load-bearing platform can ensure that the load-bearing platform can be reset in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a front view of a magnetic cutting vibration reduction device of the present invention;

[0020] Figure 2 A top view of a magnetic cutting vibration reduction device according to the present invention;

[0021] Figure 3 It is a left side view of a magnetic cutting vibration reduction device of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection between the rotating shaft and the gear ring of a magnetic cutting vibration reduction device of the present invention;

[0023] Figure 5 It is an AA cross-sectional view of a magnetic cutting vibration reduction device of the present invention;

[0024] Figure 6 A cross-sectional view of a BB of a three-dimensional magnetic levitation vibration reduction device of the present invention;

[0025] In the figure: 1. load-bearing platform; 2. gear at the bottom of the load-bearing platform; 3. gear ring; 4. permanent magnet; 5. fan blades; 6. base; 7. transmission shaft; 8. rectangular sheet; 9. self-resetting spring; 10. rotating shaft; 11. circular ring. Specific implementation methods

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by other ordinary technicians in the field without making creative breakthroughs are within the scope of protection of the present invention.

[0027] like Figure 3 , 5 6, the rectangular sheet 8 is symmetrically welded on the bottom plate of the base 6, and the two ends of the rectangular sheet 8 and the rotating shaft 10 of the inner wall of the base 6. Figure 6 , is the BB section of the device, and the fan blade 5 is fixed at the middle position of the transmission shaft 7. Figure 3 , 5 , the two rings 11 are respectively fixed on the outer wall of the transmission shaft 7. Figure 1 It is a front view of the vehicle-mounted instrument vibration reduction device of the present invention, the load-bearing platform 1 is installed, and the gear 2 at the bottom of the load-bearing platform is meshed with the gear ring 3 on the outside of the transmission shaft 7. At both ends of the load-bearing platform 1 in the sliding direction, the lifting plate of the load-bearing platform 1 is welded with one end of the self-resetting spring 9, and the other end of the self-resetting spring 9 is welded to the corresponding position on the side wall of the base 6.

[0028] like Figure 1 The number of transmission shafts 7 should be greater than or equal to two, and they should be arranged symmetrically to avoid damage to the load-bearing platform 1 due to uneven local force.

[0029] like Figure 2 , 6 As shown, the diameter of the hole cut by the permanent magnet 4 is slightly larger than the diameter of the transmission shaft 7, so as to facilitate the insertion of the transmission shaft 7.

[0030] like Figure 2 The self-resetting spring 9 is symmetrically arranged on both sides of the load-bearing platform 1 and the base 6, one end of which is welded to the inner wall of the cantilever plate of the load-bearing platform 1, and the other end is welded to the side wall of the base 6.

[0031] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A magnetic cutting vibration reduction device, characterized in that: The invention comprises a load-bearing platform (1), a gear (2) at the bottom of the load-bearing platform, a gear ring (3), a permanent magnet (4), a fan blade (5), a base (6), a transmission shaft (7), a rectangular sheet (8), a self-resetting spring (9), a rotating shaft (10), and a circular ring (11); a gear (2) at the bottom of the load-bearing platform is arranged on the lower surface of the welded ear of the load-bearing platform (1), the gear is meshed with a gear of the gear ring (3) on the transmission shaft (7), the transmission shaft (7) is composed of the gear ring (3) and the rotating shaft (10), the transmission shaft (7) is inserted into a reserved hole of the base (6), and the permanent magnet (4) is fixed to the base (6) through the rectangular sheet (8) welded to the base. A hole is reserved on the base (6) for the transmission shaft (7) to pass through, and the fan blade (5) is fixed on the transmission shaft (7). The two ends of the self-reset spring (9) are respectively welded to the pick plate of the bearing platform (1) and the side wall of the base (6). Two circular rings (11) are inserted into the transmission shaft (7) so that they are respectively adsorbed on the permanent magnets (4) on both sides, and are fixed on the transmission shaft (7) when the transmission shaft (7) is adjusted to be in a symmetrical state; when the bearing platform (1) reciprocates, the transmission shaft (7) is driven to rotate through the gear (2) at the bottom of the bearing platform, and the fan blade (5) fixed on the transmission shaft (7) rotates accordingly, thereby cutting the magnetic flux lines of the magnetic field.

2. A magnetic cutting vibration reduction device according to claim 1, characterized in that: The load-bearing platform (1) is a steel U-shaped plate, with pick ears welded to the bottom of both side plates, and pick plates connected to the self-resetting springs (9) are respectively arranged at both ends of the sliding direction.

3. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The base (6) is a steel box with an opening at the top, and a hole is reserved on the base for the transmission shaft (7) to penetrate.

4. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The rectangular thin sheet (8) is symmetrically welded to the bottom of the base (6).

5. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The permanent magnets (4) should be placed opposite to each other with opposite poles.

6. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The rotating shaft (10) is a steel round tube with twisted wires at the left and right ends. The two ends of the rotating shaft (10) are respectively screwed into a gear ring (3) to form a whole.

7. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The gear ring (3) is cut from an annular steel pipe, and its inner wall is provided with threads. Its inner diameter matches the diameter of the rotating shaft (10), and it can be rotatably screwed into the rotating shaft (10) and fixed thereto.

8. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The fan blades (5) are made of steel.

9. The magnetic cutting vibration reduction device according to claim 1, characterized in that: Two self-resetting springs (9) are respectively arranged at both ends of the load-bearing platform (1) in the sliding direction.

10. The magnetic cutting vibration reduction device according to claim 1, characterized in that: The circular ring (11) is a steel circular ring, the inner diameter of which is slightly larger than the outer diameter of the transmission shaft (7), and the outer diameter of which is larger than the diameter of the hole reserved for the permanent magnet (4).

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