CN206802180U - A kind of MR damper of embedded with spring automatic protection - Google Patents

Abstract

The utility model relates to a magneto-rheological damper with built-in spring type automatic protection, which belongs to the field of mechanical vibration engineering. The cylinder of the magnetorheological damper is filled with magnetorheological fluid, which is sealed by the end cover. The piston wound with the excitation coil is put into the cylinder, and the left and right ends of the piston are respectively connected with piston guide rods and pistons The guide rod passes through the end cover with a through hole, and the left end surface of the piston and the left end cover and between the right end surface of the piston and the right end cover are connected by springs. The left and right springs can play a certain role when the magnetorheological damper works normally. At the same time, when the control circuit fails, under the shock absorption effect of the spring, it can play a certain self-protection function.

Description

A magneto-rheological damper with built-in spring type automatic protection

technical field

The utility model relates to a magnetorheological damper device, in particular to a magnetorheological damper device with built-in spring type automatic protection.

Background technique

At present, the known magnetorheological damper is composed of magnetorheological fluid, cylinder and piston with excitation coil. By applying current to the excitation coil, an electromagnetic field is generated, and the magnetorheological effect is used to change the magnetorheological effect. Viscosity of the liquid, thereby changing the size of the output force, has achieved a good shock absorption effect. However, due to the certain instability of electrical control, once the circuit or control components fail, the damping effect of the damper will be lost, which will easily cause some dangerous accidents.

Contents of the invention

In order to overcome the potential safety hazards of the magneto-rheological damper, the utility model provides a magneto-rheological damper, which can play a certain self-protection function when the control circuit fails.

The technical scheme adopted by the utility model to solve the technical problem is: firstly put the piston wound with the excitation coil into the cylinder, the left and right end faces of the piston are respectively connected with piston guide rods of the same diameter, and the piston guide rod passes through the through hole. The end cover is tightly connected with the cylinder, and the magnetorheological fluid is sealed in the cylinder. The left end of the piston and the left end cover and the right end of the piston and the right end cover are connected by springs. The left and right springs can The magneto-rheological damper has a certain shock-absorbing effect when it works normally, and at the same time, when the control circuit fails, it plays a certain self-protection function under the shock-absorbing effect of the spring.

The beneficial effect of the utility model is that the energy consumption of the magneto-rheological damper can be reduced, the maximum output damping force can be increased, and the utility model can also play a certain protection function and reduce the occurrence rate of dangerous accidents.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structure schematic diagram of the utility model.

In the figure 1. Lead wire 2. End cap 3. Cylinder barrel 4. Piston 5. Damping channel 6. Coil 7. Spring 8. Piston guide rod 9. Magnetorheological fluid.

detailed description

First, the excitation coil 6 is wound on the piston 4 in an orderly manner, and the lead wire 1 of the excitation coil 6 is drawn out through the inner hole of the piston guide rod 8, and then the piston 4 wrapped with the excitation coil 6 is put into the cylinder, and the left and right end faces of the piston 4 are respectively connected There is a piston guide rod 8 with the same diameter. The piston guide rod 8 passes through the end cover 2 with a through hole. The end cover 2 is closely connected with the cylinder barrel 3, and the magnetorheological fluid 9 is sealed in the cylinder barrel. The left end surface of the piston is in contact with the cylinder barrel. Between the left end cover and between the right end face of the piston and the right end cover are connected by spring 7. The left and right springs can play a certain damping effect when the magnetorheological damper works normally. At the same time, when the control circuit fails, the Under the shock absorption effect of the spring, it has a certain self-protection function.

Claims (1)

1. A magnetorheological damper with built-in spring type automatic protection, characterized in that it includes: lead wire (1), end cover (2), cylinder barrel (3), piston (4), damping channel (5), coil (6), spring (7), piston guide rod (8), magnetorheological fluid (9); the connection of the above components: firstly, the excitation coil (6) is wound on the piston (4) in an orderly manner, and the excitation coil ( 6) The lead wire (1) is led out through the inner hole of the piston guide rod (8), and then the piston (4) wound with the excitation coil (6) is put into the cylinder, and the left and right ends of the piston (4) are respectively connected with the same diameter The piston guide rod (8), the piston guide rod (8) passes through the end cover (2) with a through hole, the end cover (2) is tightly connected with the cylinder barrel (3), and the magnetorheological fluid (9) is sealed in the In the cylinder, the left end face of the piston and the left end cap and between the right end face of the piston and the right end cap are connected by springs (7). At the same time, when the control circuit breaks down, under the damping effect of the spring, it can play a certain self-protection function.