Magnetorheological damper with external refrigeration part

Abstract

The utility model discloses a magneto-rheological damper with an external refrigeration part, which mainly comprises a piston head, a refrigeration part protection shell, a refrigerator, an inductor, a cooling liquid flowing pipe, a cooling liquid return pipe, a voltage valve, a temperature sensor, a magnet exciting coil and the like, and the refrigeration part is externally arranged in an annular groove of a damper cylinder body and is tightly matched with the damper cylinder body. When the piston head moves, the refrigerating part cools the magnetorheological damper through cooling liquid circularly flowing in the cooling liquid flowing pipe and the cooling liquid return pipe, and the device is prevented from being damaged due to overheating. According to the utility model, a refrigeration part is additionally arranged on the basis of a traditional magnetorheological damper, so that the risk that the magnetorheological damper is damaged due to overheating is reduced, and the magnetorheological damper is particularly suitable for a damping system in the traffic industry.

Description

TECHNICAL FIELD

[0001] The utility model relates to a magneto-rheological damper, especially a magneto-rheological damper with external refrigeration part. BACKGROUND

[0002] The magneto-rheological damper is an intelligent damping device developed based on the characteristics of magneto-rheological fluid, and the magneto-rheological fluid is mixed by small soft magnetic particles with high magnetic permeability and low magnetic hysteresis and non-magnetic liquid, and is a typical intelligent material. Under zero magnetic field conditions, the magneto-rheological fluid shows the characteristics of a low-viscosity Newtonian fluid. This unique rheological property enables the magneto-rheological damper to achieve rapid adjustment of damping force within a millisecond response time, with significant advantages such as low power consumption, high reliability, and fast response. The magneto-rheological damper has been widely used in many fields such as bridges, buildings, automobiles, aerospace, etc., and is mainly used for vibration reduction and vibration control.

[0003] In practical applications, the magneto-rheological damper converts the excited mechanical energy into heat energy during operation, and the energization of the damper coil also generates Joule heat, resulting in an increase in the internal temperature of the damper. The increase in temperature has a significant negative impact on the performance of the magneto-rheological damper, limiting its performance and service life in practical applications. SUMMARY

[0004] The utility model aims at providing a magneto-rheological damper with external refrigeration part, which is composed of a cooling liquid flow pipe (5), a refrigeration part protection shell (7), a refrigerator (16), an inductor (17), a cooling liquid return pipe (18), a voltage valve (20), and a temperature sensor (21). When the temperature sensor (21) senses an increase in the temperature of the damper, the voltage valve (20) is started, and the cooling liquid is output. The cooling liquid circulates and flows in the cooling liquid flow pipe (5) to reduce the temperature, and flows back from the cooling liquid return pipe (18). When the inductor (17) detects an increase in the temperature of the cooling liquid, the refrigerator (16) is started to cool the cooling liquid, achieving rapid cooling of the magneto-rheological damper under continuous working conditions.

[0005] The utility model discloses a technical scheme that solves its technical problem includes: a kind of external refrigeration part's magneto rheological damper, it is characterized by including: piston rod (1), sealing ring I (2), damper left end cover (3), screw I (4), cooling liquid flow pipe (5), excitation coil (6), refrigeration part protective shell (7), nut (8), floating piston (9), sealing ring II (10), right ear (11), damper right end cover (12), screw II (13), sealing ring III (14), damper cylinder (15), refrigerator (16), inductor (17), cooling liquid return pipe (18), piston head (19), voltage valve (20), temperature sensor (21), sealing ring IV (22), left ear (23), piston rod (1) left end is connected by thread fastening with left ear (23), damper left end cover (3) middle processing right circular through-hole, piston rod (1) and damper left end cover (3) circular through-hole inner surface clearance cooperation, piston rod (1) is sealed with the inner surface of circular through-hole of damper left end cover (3) by sealing ring I (2), damper left end cover (3) and damper cylinder (15) left end surface clearance cooperation, damper left end cover (3) is fixedly connected with damper cylinder (15) by screw I (4), piston rod (1) right end is processed with external thread, piston rod (1) is connected by thread fastening with piston head (19), piston head (19) right end is processed with external thread, piston head (19) is connected by thread fastening with nut (8), the outer surface of damper cylinder (15) is processed with annular groove, refrigeration part protective shell (7) is built-in in annular groove, voltage valve (20) is installed in refrigeration part protective shell (7), voltage valve (20) is connected with the left end of cooling liquid flow pipe (5), cooling liquid flow pipe (5) is arranged on the annular groove on the outer surface of damper cylinder (15), the right end of cooling liquid flow pipe (5) is connected with the right end of cooling liquid return pipe (18), the left end of cooling liquid return pipe (18) is connected with voltage valve (20), the right end of cooling liquid flow pipe (5) is connected with refrigerator (16), inductor (17) is installed on the top of refrigerator (16), and is connected with inductor (17), rectangular small hole is processed in damper cylinder (15) directly below voltage valve (20), temperature sensor (21) is inlaid in rectangular small hole, and is connected with voltage valve (20), floating piston (9) is placed below piston head (19), 2 circular grooves are processed on the both sides of floating piston (9), sealing ring III (14) is sealed with damper cylinder (15) by the circular groove of the both sides of floating piston (9), damper right end cover (12) and damper right end surface clearance cooperation, damper right end cover (12) is fixedly connected by screw II (13), damper right end cover (12) is sealed with damper cylinder (15) by sealing ring II (10), damper right end cover (12) is processed with external thread, right ear (11) is processed with internal thread,The right end cover (12) of the damper is fixedly connected with the right hanger (11) through machined external threads, the excitation coil (6) is wound in the groove of the piston head (19), two leads of the excitation coil (6) are led out from the lead groove in the piston head (19) and are led out through the lead hole in the piston rod (1).

[0006] Compared with the background art, the utility model has the beneficial effects that:

[0007] (1) The utility model discloses a refrigeration part protection shell (7) is installed on the outer surface of the damper cylinder (15), a temperature sensor (21) is arranged in the refrigeration part protection shell (7), and the temperature sensor (21) is used for monitoring the temperature of the magnetorheological damper.

[0008] (2) The utility model discloses an electromagnetic valve (22) is arranged at the cooling liquid inlet, the electromagnetic valve (22) is connected with the temperature sensor (21), and the circulation speed of the cooling liquid can be controlled under different sensing temperatures.

[0009] (3) The utility model discloses a refrigerator (16) is installed on the right part of the cooling liquid flow pipe (5), the refrigerator (16) is connected with the inductor (17), when the inductor (17) senses that the temperature of the cooling liquid is too high, the refrigerator (16) is opened to regulate the temperature of the cooling liquid, and the temperature of the magnetorheological damper can be autonomously adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the utility model.

[0011] Figure 2 It is the refrigeration part local view of the utility model.

[0012] Figure 3 It is the three-dimensional structure diagram of the utility model. DETAILED DESCRIPTION

[0013] The utility model will be further described in connection with the drawings and examples:

[0014] For example, Figure 1As shown, the utility model of include: piston rod (1), sealing ring I (2), damper left end cover (3), screw I (4), cooling liquid flow pipe (5), exciting coil (6), refrigeration site protection shell (7), nut (8), floating piston (9), sealing ring II (10), right ear (11), damper right end cover (12), screw II (13), sealing ring III (14), damper cylinder (15), refrigerator (16), inductor (17), cooling liquid return pipe (18), piston head (19), voltage valve (20), temperature sensor (21), sealing ring IV (22), left ear (23).

[0015] The left end of the piston rod (1) is connected with the left hanger (23) by screw fastening, the middle of the damper left end cover (3) is processed with a right circular hole, the piston rod (1) is matched with the inner surface of the circular hole of the damper left end cover (3) by clearance, the piston rod (1) is sealed with the inner surface of the circular hole of the damper left end cover (3) by the sealing ring I (2), the damper left end cover (3) is matched with the left end surface of the damper cylinder (15) by clearance, the damper left end cover (3) is fixedly connected with the damper cylinder (15) by the screw I (4), the right end of the piston rod (1) is processed with external thread, the piston rod (1) is screw fastened with the piston head (19) through the threaded hole, the right end of the piston head (19) is processed with external thread, the piston head (19) is screw fastened with the nut (8), the outer surface of the damper cylinder (15) is processed with an annular groove, the refrigeration part protection shell (7) is embedded in the annular groove, the voltage valve (20) is installed in the refrigeration part protection shell (7), the voltage valve (20) is connected with the left end of the cooling liquid flow pipe (5), the cooling liquid flow pipe (5) is arranged on the annular groove of the outer surface of the damper cylinder (15), the right end of the cooling liquid flow pipe (5) is connected with the right end of the cooling liquid return pipe (18), the left end of the cooling liquid return pipe (18) is connected with the voltage valve (20), the right end of the cooling liquid flow pipe (5) is connected with the refrigerator (16), the inductor (17) is installed on the top of the refrigerator (16) and connected with the inductor (17). The damper cylinder (15) is processed with a rectangular small hole right below the voltage valve (20), the temperature sensor (21) is embedded in the rectangular small hole and connected with the voltage valve (20), the floating piston (9) is placed below the piston head (19), two circular grooves are respectively processed on the two sides of the floating piston (9), the sealing ring III (14) is sealed with the damper cylinder (15) through the circular grooves processed on the two sides of the floating piston (9), the damper right end cover (12) is matched with the right end surface of the damper by clearance, the damper right end cover (12) is fixedly connected by the screw II (13), the damper right end cover (12) is sealed with the damper cylinder (15) by the sealing ring II (10), the damper right end cover (12) is processed with external thread, the right hanger (11) is processed with internal thread, the damper right end cover (12) is screw fixedly connected with the right hanger (11) through the processed external thread, the excitation coil (6) is wound in the groove of the piston head (19), the two leads of the excitation coil (6) are led out from the lead groove in the piston head (19) and led out from the lead hole in the piston rod (1).

[0016] The left end cover (3) of the damper, the piston head (19) and the damper cylinder (15) form a sealed cavity I, the piston head (19), the damper cylinder (15) and the floating piston (9) form a sealed cavity II, the floating piston (9), the damper cylinder (15) and the right end cover (12) of the damper form a sealed cavity III, the sealed cavity I and the sealed cavity II are filled with magnetorheological fluid, and the sealed cavity III is filled with compressed gas; when the piston rod (1) is stretched in the axial direction, the magnetorheological fluid in the sealed cavity I enters the sealed cavity II through the liquid flow channel; when the piston rod (1) is compressed in the axial direction, the magnetorheological fluid in the sealed cavity II enters the sealed cavity I through the liquid flow channel; when the piston rod (1) moves in the axial direction, the volume of the sealed cavity I and the sealed cavity II changes accordingly, and at this time, the floating piston (9) realizes volume compensation through left and right floating in the axial direction.

[0017] As shown in Figure 2 The refrigeration part is composed of a cooling liquid flow pipe (5), a refrigeration part protection shell (7), a refrigerator (16), a sensor (17), a cooling liquid return pipe (18), a voltage valve (20) and a temperature sensor (21); when the temperature sensor (21) senses that the temperature of the damper is increased, the voltage valve (20) is started, and cooling liquid is output; the cooling liquid is circulated and flows in the cooling liquid flow pipe (5) to be cooled, and then flows back from the cooling liquid return pipe (18); when the sensor (17) detects that the temperature of the cooling liquid is increased, the refrigerator (16) is started to cool the cooling liquid, so that the magnetorheological damper is rapidly cooled under the condition of continuous work.

[0018] Figure 3 It is a three-dimensional structure diagram of the utility model, the cooling liquid flow pipe (5) is arranged on the outer surface of the damper cylinder (15) to cool the magnetorheological damper; the right end of the cooling liquid flow pipe (5) is connected with the right end of the cooling liquid return pipe (18); and the left end of the cooling liquid return pipe (18) is connected with the voltage valve (20).

[0019] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above with a preferred embodiment, however, it is not used to limit the utility model, any person skilled in the art, without departing from the technical scheme range of the utility model, can make some changes or modifications to the above disclosed technical content to make equivalent embodiments with equivalent changes, but as long as it does not depart from the technical scheme content of the utility model, any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. A magnetorheological damper for an external cooling unit, characterized in that: The main components include piston rod (1), sealing ring I (2), damper left end cap (3), screw I (4), coolant flow pipe (5), excitation coil (6), cooling part protective shell (7), nut (8), floating piston (9), sealing ring II (10), right lifting lug (11), damper right end cap (12), screw II (13), sealing ring III (14), damper cylinder (15), cooler (16), sensor (17), coolant return pipe (18), piston head (19), voltage valve (20), temperature sensor (21), sealing ring IV (22), and left lifting lug (23). The left end of piston rod (1) is fastened to the left lifting lug (23) by threads. The right circle is machined in the middle of the damper left end cap (3). The piston rod (1) is fitted with the inner surface of the circular through hole of the left end cover (3) of the damper with clearance. The piston rod (1) is sealed with the inner surface of the circular through hole of the left end cover (3) of the damper through sealing ring I (2). The left end cover (3) of the damper is fitted with the left end face of the damper cylinder (15) with clearance. The left end cover (3) of the damper is fixedly connected to the damper cylinder (15) through screw I (4). The right end of the piston rod (1) is machined with external threads. The piston rod (1) is threadedly fastened to the piston head (19) through the threaded hole. The right end of the piston head (19) is machined with external threads. The piston head (19) is threadedly fastened to the nut (8). The outer surface of the damper cylinder (15) is machined with an annular groove. The cooling part protective shell (7) is built into the annular groove. A voltage valve (20) is installed inside the protective shell (7) of the cooling section. The voltage valve (20) is connected to the left end of the coolant flow pipe (5). The coolant flow pipe (5) is arranged on the annular groove on the outer surface of the damper cylinder (15). The right end of the coolant flow pipe (5) is connected to the right end of the coolant return pipe (18). The left end of the coolant return pipe (18) is connected to the voltage valve (20). The right end of the coolant flow pipe (5) is connected to the refrigerator (16). A sensor (17) is installed on the top of the refrigerator (16) and is connected to the sensor (17). A rectangular hole is machined directly below the voltage valve (20) in the damper cylinder (15). The temperature sensor (21) is embedded in the rectangular hole and is connected to the voltage valve (20). The moving piston (9) is placed below the piston head (19). Two circular grooves are machined on each side of the floating piston (9). The sealing ring III (14) seals the damper cylinder (15) through the circular grooves machined on both sides of the floating piston (9). The right end cover (12) of the damper is clearance-fitted with the right end face of the damper. The right end cover (12) of the damper is fixedly connected by screw II (13). The right end cover (12) of the damper is sealed with the damper cylinder (15) through the sealing ring II (10). The right end cover (12) of the damper is machined with external threads. The right lifting lug (11) is machined with internal threads. The right end cover (12) of the damper is fixedly connected to the right lifting lug (11) through the machined external threads. The excitation coil (6) is wound in the groove of the piston head (19).The two leads of the excitation coil (6) are led out from the lead slot in the piston head (19) and through the lead hole in the piston rod (1).

2. The magnetorheological damper for an external cooling unit according to claim 1, characterized in that: The left end cap (3) of the damper, the piston head (19) and the damper cylinder (15) form a sealed chamber I. The piston head (19), the damper cylinder (15) and the floating piston (9) form a sealed chamber II. The floating piston (9), the damper cylinder (15) and the right end cap (12) of the damper form a sealed chamber III. The sealed chamber I and the sealed chamber II are filled with magnetorheological fluid. The sealed chamber III is filled with compressed gas. When the piston rod (1) is stretched in the axial direction, the magnetorheological fluid in the sealed chamber I enters the sealed chamber II through the fluid flow channel. When the piston rod (1) is compressed in the axial direction, the magnetorheological fluid in the sealed chamber II enters the sealed chamber I through the fluid flow channel. When the piston rod (1) moves in the axial direction, the volumes of the sealed chamber I and the sealed chamber II will change accordingly. At this time, the floating piston (9) will achieve volume compensation by floating left and right in the axial direction.

3. The magnetorheological damper for an external cooling unit according to claim 1, characterized in that: The cooling section consists of a coolant flow pipe (5), a cooling section protective shell (7), a cooler (16), a sensor (17), a coolant return pipe (18), a voltage valve (20), and a temperature sensor (21). When the temperature sensor (21) senses that the damper temperature has increased, the voltage valve (20) is activated and outputs coolant. The coolant circulates and cools down in the coolant flow pipe (5) and flows back from the coolant return pipe (18). When the sensor (17) detects that the coolant temperature has increased, the cooler (16) is activated to cool down the coolant, thus realizing rapid cooling of the magnetorheological damper under continuous working conditions.

4. The magnetorheological damper for an external cooling section according to claim 1, characterized in that: The cooler (16), sensor (17), cooling part protective shell (7), coolant flow pipe (5), and coolant return pipe (18) are all made of non-magnetic material.

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