Strong magnetic damper

Abstract

The utility model discloses a strong magnetic damper which comprises a cylinder body, a piston, a vibration reduction rod, a magnet I and a magnet II. A plurality of magnets I are fixedly mounted in the cylinder body; the vibration reduction rod extends into the cylinder body from one end of the cylinder body, a piston is fixedly installed on the vibration reduction rod and corresponds to each magnet I, a magnet II is fixedly installed on the face, facing the magnet I, of each piston, and the same poles of the magnets II and the corresponding magnets I are oppositely arranged. The device is simple in structure and low in cost; the piston is arranged in the inner cavity of the cylinder body, the damping hole is formed in the piston, the damping effect can be achieved, meanwhile, the resonant motion generated by the damping effect in the moving process of the piston plate can be well guaranteed, and the damping effect of the hydraulic cylinder is improved through repulsive force generated by the magnet II arranged on the damping rod and the magnet I fixedly installed on the hydraulic cylinder. And the buffering effect can be further enhanced. The thickness of the cylinder body can be reduced, and the weight of the cylinder body can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of dampers, and in particular relates to a strong magnetic damper. Background Art

[0002] The various existing vibration buffering and vibration reduction devices can be divided into fully enclosed and open types in terms of structure. The vibration reduction methods include spring type vibration reduction, pneumatic type vibration reduction and hydraulic type vibration reduction, etc., and they each have their own advantages. The commonly used ones are hydraulic cylinder type vibration reduction structure or spring type vibration reduction structure. The pressure of pneumatic type vibration reduction and hydraulic type vibration reduction is relatively high, and the wall thickness of the hydraulic cylinder is required to be relatively high, resulting in a large volume and weight value; and the alternating stress of the spring type vibration reduction structure will cause material fatigue failure. Therefore, the vibration reduction device with low sensitivity to pollution, low sensitivity to pollution, small size and stable and reliable has irreplaceable advantages. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a strong magnetic damper which has a simple structure and can reduce the wall thickness of the hydraulic cylinder to make it light in weight.

[0004] The technical solution adopted by the utility model is:

[0005] A strong magnetic damper comprises a cylinder body, a piston, a damping rod, a magnet I and a magnet II; a plurality of magnets I are fixedly mounted in the cylinder body; the damping rod extends into the cylinder body from one end of the cylinder body, a piston is fixedly mounted on the damping rod corresponding to each magnet I, a magnet II is fixedly mounted on the end surface of the piston facing the magnet I, and the magnet II is arranged opposite to the corresponding magnet I with the same pole.

[0006] Furthermore, a plurality of damping holes are provided on the magnet II and the piston on which the magnet II is mounted, and the damping holes are connected to the cavities on both sides of the piston.

[0007] Furthermore, the magnet I and magnet II are both ring-shaped.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model has a simple structure and low cost. By arranging a piston in the inner cavity of the cylinder body and providing a damping hole on the piston, it can play a buffering role and well ensure the resonant movement of the piston plate caused by the damping effect during the activity. The repulsive force generated by the magnet II arranged on the vibration reduction rod and the magnet I fixedly installed on the hydraulic cylinder can further enhance the buffering effect, and different numbers of magnets I and magnet II can be arranged according to actual needs, thereby improving the stability of the utility model. When the vibration reduction effect is the same, the pressure required in the cylinder body of the utility model is much smaller than the pressure in the hydraulic cylinder of the traditional hydraulic cylinder vibration reduction structure, which can reduce the thickness of the cylinder body and reduce the weight of the cylinder body and the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of embodiment 1 of the present utility model.

[0011] Figure 2 It is a stereogram of embodiment 1 of the utility model.

[0012] Figure 3 It is a structural diagram of embodiment 2 of the present utility model.

[0013] Figure 4 1 is a state diagram of the utility model embodiment 1 when in use, (A) is a state diagram when the magnetic force and the external force are balanced; (B) is a state diagram when the magnetic force is greater than the external force; (C) is a state diagram when the magnetic force is less than the external force. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0015] like Figure 1-2 As shown, the utility model includes a cylinder body 1, a piston 2, a damping rod 3, a magnet I4 and a magnet II5. Two magnets I4 are fixedly installed in the cylinder body 1; one magnet I4 is arranged at one end of the cylinder body, and the other magnet I4 is arranged in the middle of the cylinder body. The damping rod extends into the cylinder body 1 from the other end of the cylinder body. A piston 2 is fixedly installed on the damping rod 3 corresponding to each magnet I4, and a magnet II5 is provided on the end surface of the piston 2 facing the magnet I4. A plurality of damping holes 6 (the number of damping holes 6 can be one or more) are provided on the magnet II5 and the piston 2 on which the magnet II5 is installed, and the damping holes 6 connect the cavities on both sides of the piston 2. The magnet II5 and the corresponding magnet I4 are arranged opposite to each other with the same pole. The magnet I4 and the magnet II5 are both annular.

[0016] The utility model sets a piston 2 in the inner cavity of the cylinder body 1, and a damping hole 6 is provided on the piston 2, which can play a buffering role and can well ensure the resonant movement of the piston 2 caused by the damping effect during the activity. The repulsive force generated by the magnet II5 set on the vibration reduction rod 3 and the magnet I4 fixedly installed on the hydraulic cylinder can further strengthen the buffering effect, and different numbers of magnets I4 and magnets II5 can be set according to actual needs, thereby improving the stability of the utility model. When the vibration reduction effect is the same, the pressure required in the cylinder body 1 of the utility model is much smaller than the pressure in the hydraulic cylinder of the traditional hydraulic cylinder vibration reduction structure, which can reduce the thickness of the cylinder body 1 and the weight of the cylinder body 1 and the utility model; reduce the use of materials, facilitate installation and use, and be flexible in matching.

[0017] like Figure 4As shown, when the impact force pushes the vibration reduction rod 3 to move, the paired magnetic blocks generate like-polar repulsion forces, which, under the action of the laminated force, push the vibration reduction rod 3 back to stop the movement, thus achieving the magnetic resistance vibration reduction effect. Example 2

[0018] like Figure 3 As shown, its structure is similar to that of embodiment 1, the only difference being that 5 magnets I4 are provided in the middle of the cylinder body 1, and correspondingly, a corresponding number of pistons 2 and magnets II5 are provided on the damping rod 3.

Claims

1. A strong magnetic damper, characterized in that: It comprises a cylinder body, a piston, a damping rod, a magnet I and a magnet II; a plurality of magnets I are fixedly installed in the cylinder body; the damping rod extends into the cylinder body from one end of the cylinder body, a piston is fixedly installed on the damping rod corresponding to each magnet I, a magnet II is fixedly installed on the end surface of the piston facing the magnet I, and the magnet II is arranged opposite to the corresponding magnet I with the same pole.

2. The strong magnetic damper according to claim 1 is characterized in that: The magnet II and the piston on which the magnet II is mounted are provided with a plurality of damping holes, and the damping holes are connected with the cavities on both sides of the piston.

3. The strong magnetic damper according to claim 1 is characterized in that: The magnet I and magnet II are both ring-shaped.

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