CN102588498A - No-leakage electromagnetic fluid body damper - Google Patents

Abstract

The invention relates to a no-leakage electromagnetic fluid body damper. The damper comprises a disc (32), a bottom disc flange (17) arranged opposite to the disc (32), a hydraulic cylinder (2) which is used for connecting with the disc (32) and the bottom disc flange (17) in a no-leakage manner, a first disc flange (1) provided with a third unthreaded hole (39), a cylinder (25) which is provided with an opening and disc flanges at two ends, an upper end disc flange arranged on the upper end of the cylinder (25) with the disc flanges at the two ends, and a lower end disc flange arranged on the lower end of the cylinder (25) with the disc flanges at the two ends; and the magnetic force is utilized to drag a piston in the damper to move, when the piston moves, the damping liquid flows past a small round through hole on the piston to consume energy, thereby playing the role of controlling oscillatory effects. As a sealing member is not used, and the damper is not easy to leak out the damping liquid.

Description

A non-leakage electromagnetic fluid damper

technical field

The invention proposes "a non-leakage electromagnetic fluid damper", which belongs to the field of structural vibration control.

Background technique

The fluid damper is an effective structural damper, but during the working process of the fluid damper, there is a possibility of fluid leakage in the fluid damper. limit. The present invention proposes a fluid damper, which does not use a seal, and thus is less prone to liquid leakage failures.

Contents of the invention

Technical problem: The object of the present invention is to propose a "non-leakage electromagnetic fluid damper", which is especially suitable for structural vibration control under the condition that no leakage is allowed.

Technical solution: In order to solve the above technical problems, the technical solution provided by the invention is:

The non-leakage electromagnetic fluid damper of the present invention utilizes magnetic force to push the piston movement in the damper to consume energy in a non-contact manner, thereby achieving the effect of controlling vibration.

The damper comprises: a disk, a bottom disk flange opposite to the disk, a hydraulic cylinder connecting the disk and the bottom disk flange without leakage, a first disk flange with a third light hole, A cylinder with disc flanges at both ends having an opening, a cylinder with disc flanges at both ends has an upper end disc flange, and a cylinder with disc flanges at both ends has a lower end disc flange;

The bottom disk flange, the disk and the hydraulic cylinder form a closed non-leakage space, and the damping fluid fills the closed non-leakage space, and the closed non-leakage space is partly located in the cylinder with disk flanges at both ends, The disc flange at the lower end of the cylinder with disc flanges at both ends is connected to the disc flange, the hydraulic cylinder passes through the third light hole of the disc flange, and the disc flange has a built-in electromagnet block;

The damper also includes a piston moving axially along the hydraulic cylinder, a circular shaft and a permanent magnet block. The piston is located in the middle of the hydraulic cylinder. The flange of the bottom disc is connected without leakage. The upper end surface of the circular shaft is flush with the upper end surface of the disc and is connected without leakage. There is a small round through hole on the piston. When the damping fluid passes through the small round through hole, the resultant force of the damping force on the piston is The line of action coincides with the axis of the circular shaft, and the permanent magnet block is arranged inside the piston.

The axes of the cylinder with disk flanges at both ends, the axis of the disk flange, the axis of the hydraulic cylinder, the axis of the bottom disk flange, the axis of the circular shaft, the axis of the piston, and the axis of the circular through hole coincide.

The electromagnet block and the permanent magnet block attract each other through magnetic force, and the resultant force of all permanent magnet blocks in the horizontal direction is zero; the electromagnetic field generated by the electromagnet block can be changed by adjusting the magnitude and direction of the current of the electromagnet block The direction and strength of the permanent magnet block can be actively adjusted to achieve the purpose of active vibration control.

A round shaft with a second spring on its upper section to obtain another style of a non-leakage electromagnetic fluid damper; wherein: the lower end of the second spring is connected to the upper surface of the piston, and the upper end of the second spring is connected to the upper part of the round shaft connected, the line of action of the resultant force of the force of the second spring on the piston coincides with the axis of the circular shaft.

The lower section of the circular shaft is provided with a first spring to obtain another style of a non-leakage electromagnetic fluid damper; wherein: the upper end of the first spring is connected with the lower surface of the piston, and the lower end of the first spring is connected with the lower surface of the circular shaft. The lowermost ends are connected, and the line of action of the resultant force of the force of the first spring on the piston coincides with the axis of the circular shaft.

The circular shaft is provided with a second spring and a first spring to obtain another style of a non-leakage electromagnetic fluid damper; wherein: the lower end of the second spring is connected with the upper surface of the piston, and the upper end of the second spring is connected with the upper surface of the piston. The upper part of the circular shaft is connected; the upper end of the first spring is connected with the lower surface of the piston, and the lower end of the first spring is connected with the lower end of the circular shaft; The axis of the shaft coincides; the line of action of the resultant force of the force of the first spring on the piston coincides with the axis of the circular shaft.

The flange of the upper end disc is connected to the lower end, and a third spring is provided between the discs to obtain another style of a non-leakage electromagnetic fluid damper; the upper end of the third spring is connected with discs at both ends The upper end of the cylinder of the flange is on the lower end surface of the disc flange, and the lower end of the third spring is connected to the upper surface of the disc.

When in use, the upper disc flange of the cylinder with disc flanges at both ends is fixed on the vibrating body (or stationary foundation), and the upper disc flange of the cylinder with disc flanges at both ends The upper surface is in contact with the vibrating body (or stationary base), the bottom disc flange is fixed on the stationary base (or vibrating body), and the lower surface of the upper disc flange of the cylinder with disc flanges at both ends The distance from the upper surface of the disc is greater than the maximum vibration displacement of the vibrating body relative to the foundation; the axis of the cylinder with disc flanges at both ends, the axis of the bottom disc flange, the axis of the cylindrical hydraulic cylinder, the circle The axis of the disc, the axis of the circular shaft, the axis of the piston, the axis of the disc flange, the axis of the second spring and the axis of the first spring coincide. Due to the magnetic attraction between the permanent magnet block in the piston and the permanent magnet block in the disc flange, when the vibrating body is stationary, the piston is at rest under the joint action of gravity, magnetic force, the second spring and the first spring, etc. In equilibrium state, when the vibrating body vibrates, the disc flange will pull the piston to move along the circular axis. When the piston moves, the damping fluid flows through the small round through hole on the piston, and the damping fluid flows through the small round through hole on the piston to dissipate the structural vibration. When energy is used, the size and direction of the current in the electromagnet block can be changed by computer control according to the demand, and it plays the role of active control.

Beneficial effects: the cylindrical hydraulic cylinder, the bottom disk flange, and the disk form a leak-free airtight space, and the piston is pulled by magnetic force to move along the circular axis in this airtight space. When the piston moves, the damping fluid flows through the small hole on the piston. Round hole, when the damping fluid flows through the small round hole on the piston, it consumes energy, which has the effect of suppressing vibration. Since no seal is used, the piston only moves in a leak-free airtight space, and the fluid damper does not have liquid leakage in the vibration control process of general fluid dampers. Due to the use of electromagnets, the magnetic polarity and magnetic field strength of the electromagnets are controlled by adjusting the external power supply, which plays a role in active control, and the distance between the electromagnet block and the permanent magnet block can be very close without being affected by vibration displacement. According to the principle of science, the magnetic force is greater, so it can provide greater damping force.

Description of drawings:

Fig. 1 is a front view sectional structural schematic diagram of a non-leakage electromagnetic fluid damper;

Fig. 2 is a front view sectional structure schematic diagram of the disc flange 1 and the components installed on the disc flange 1 in Fig. 1;

Fig. 3 is a front view sectional structural schematic diagram of the disc flange 1 in Fig. 1;

Fig. 4 is a front view sectional structure schematic diagram of the disc flange 1 and the components installed on the disc flange 1 in the A-A direction in Fig. 1;

Fig. 5 is a front view sectional structural schematic diagram of the disc flange 1 in Fig. 4;

Fig. 6 is the bottom view of disc flange 1 in Fig. 1;

Fig. 7 is a schematic diagram of the cross-sectional structure of the disc flange 1 in the direction of BB in Fig. 6;

Fig. 8 is the bottom view of the second quadrangular briquetting block 9 in Fig. 6;

Fig. 9 is a front view sectional structure schematic diagram of the piston 18 and the parts installed on the piston 18 in Fig. 1;

Fig. 10 is a top view of piston 18 in Fig. 1;

Fig. 11 is a schematic cross-sectional structure diagram of the CC direction of the piston 18 in Fig. 10;

Fig. 12 is a DD-direction sectional structure schematic diagram of the piston 18 in Fig. 10;

Fig. 13 is a bottom view of the first quadrangular briquetting block 4 in Fig. 10;

In the above figure, there are: disc flange 1, cylindrical hydraulic cylinder 2, first bolt 3, first quadrilateral pressing block 4, first light hole 5, first threaded hole 6, permanent magnet block 7, Round shaft 8, second quadrilateral pressure block 9, second bolt 10, electromagnet block 11, second threaded hole 12, second light hole 13, first bolt hole 14, damping fluid 15, first circular spring 16, bottom disc flange 17, piston 18, small round through hole 19, round through hole 20, second circular spring 21, lower end disc flange 22 of cylinder 25 with disc flanges at both ends, second Bolt hole 23, the 3rd bolt hole 24, the cylinder 25 that both ends have disc flange, the 4th bolt hole 26, the upper end disc flange 27 of the cylinder 25 that both ends have disc flange, the 2nd Three circular springs 28, a cylinder 29, a through hole 30, a third bolt 31, a disc 32, a first T-shaped quadrilateral groove 33, a larger quadrilateral groove 34 in the upper part of the first T-shaped quadrilateral groove 33, the first The less quadrilateral groove 35 of the bottom width of T-shaped quadrilateral groove 33, the second T-shaped quadrilateral groove 36, the less quadrilateral groove 37 of the upper width of the second T-shaped quadrilateral groove 36, the lower width of the second T-shaped quadrilateral groove 36 Larger quadrilateral slot 38 , third light hole 39 , fourth light hole 40 , first wire 41 , second wire 42 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

The invention proposes a non-leakage electromagnetic fluid damper, which uses magnetic force to push the piston in the damper to move. When the piston moves, the damping fluid flows through the small round hole (damping hole) on the piston, and the damping fluid flows through the small round hole on the piston. The circular hole (orifice) dissipates energy while controlling vibration.

The following descriptions of embodiments of the invention are merely exemplary in nature, and are in no way intended to limit the application or uses of the invention.

The feature of this non-leakage electromagnetic fluid damper is that all springs are in the form of circular springs, the upper surface of the piston 18 has a first T-shaped quadrilateral groove 33, and the length direction of the first T-shaped quadrilateral groove 33 passes through the piston 18. The center of circle, the first T-shaped quadrilateral groove 33 is evenly distributed on the piston 18, the distance from the axis of all the first T-shaped quadrilateral groove 33 to the piston 18 is the same, the first T-shaped quadrilateral groove 33 is formed by the first T-shaped quadrilateral groove 33 The larger quadrilateral groove 34 of top width and the less quadrilateral groove 35 of the bottom width of the first T-shaped quadrilateral groove 33 are formed; 35 have the same shape, and the size of the columnar permanent magnet piece 7 is identical to the size of the smaller quadrilateral groove 35 of the first T-shaped quadrilateral groove 33; In the less quadrangular groove 35, the lower surface of the columnar permanent magnet piece 7 fits with the lower surface of the lower quadrangular groove 35 of the lower width of the first T-shaped quadrangular groove 33; two magnetic poles of the columnar permanent magnet piece 7 point to The axial direction of the piston 18 and pointing away from the axial direction of the piston 18; the shape of the first quadrangular pressing block 4 is identical to the shape of the larger quadrangular groove 34 of the upper width of the first T-shaped quadrangular groove 33, the first quadrangular The size of the briquetting block 4 is the same as the size of the larger quadrilateral groove 34 of the upper width of the first T-shaped quadrilateral groove 33; The first threaded holes 6 are symmetrically arranged; the first light hole 5 is arranged on the first quadrangular pressing block 4, and the first quadrangular pressing block 4 is placed in the quadrangular groove with a larger width on the upper part of the first T-shaped quadrangular groove 33 34, the lower surface of the first quadrangular briquetting block 4 fits with the upper surface of the larger quadrangular groove 34 of the upper width of the first T-shaped quadrangular groove 33, and the upper surface of the first quadrangular briquetting block 4 and the piston The upper surface of 18 is flush; the quantity of the first light hole 5 on the first quadrangular pressing block 4 is the same as the first threaded hole 6 of the larger quadrangular groove 34 of the upper width of the first T-shaped quadrangular groove 33 of the piston 18 The same number, the axis of the first light hole 5 on the first quadrangular pressing block 4 coincides with the axis of the first threaded hole 6 of the first T-shaped quadrangular groove 33 of the piston 18; the threaded end of the first bolt 3 Screw through the first light hole 5 into the first threaded hole 6. When the first bolt 3 is tightened, the first bolt 3 will compress the first quadrilateral pressing block 4; There are small round through holes 19, the distances from all the small round through holes 19 to the axis of the piston 18 are the same, and the small round through holes 19 must not overlap with the first T-shaped quadrilateral groove 33, so that the small round through holes 19 arranged in this way can ensure that when the damping fluid 15 passes through the small The line of action of the resultant force of the damping force on the piston 18 coincides with the axis of the circular shaft 8 during the round through hole 19; the lower surface of the disc flange 1 has a second T-shaped quadrilateral groove 36, and the length direction of the second T-shaped quadrilateral groove 36 The line crosses the center of circle of the disc flange 1, and the second T-shaped quadrilateral groove 36 is formed by the smaller four sides of the upper width of the second T-shaped quadrilateral groove 36. Shaped groove 37 and the larger quadrilateral groove 38 of the bottom width of the second T-shaped quadrilateral groove 36 are formed; The size of iron block 11 is identical with the size of the less quadrilateral groove 37 of the upper width of the second T-shaped quadrilateral groove 36; The upper surface of the electromagnet block 11 is attached to the upper surface of the second T-shaped quadrilateral groove 36; the two magnetic poles of the electromagnet block 11 point to the axial direction of the disc flange 1 and point away from the axial direction of the disc flange 1 After electrification, the magnetic polarity of the electromagnet block 11 near the end of the cylindrical hydraulic cylinder 2 is opposite to that of the columnar permanent magnet block 7 near the end of the cylindrical hydraulic cylinder 2, so that the electromagnet block 11 and the columnar permanent magnet block 7 Just can satisfy electromagnet piece 11 and columnar permanent magnet piece 7 to attract each other by magnetic force, the resultant force of all columnar permanent magnet piece 7 is subjected to the requirement of the component of magnetic force in the horizontal direction to be zero; The shape of the bigger quadrilateral groove 38 of the lower width of the second T-shaped quadrilateral groove 36 is identical, and the size of the second quadrilateral pressing block 9 is identical with the larger size of the lower width of the second T-shaped quadrilateral groove 36 of the quadrilateral groove 38. The four corners of the larger quadrangular groove 38 of the bottom width of the second T-shaped quadrilateral groove 36 arrange the second threaded hole 12 symmetrically with respect to the diameter line of the disc flange 1; The second light hole 13; the second quadrangular pressing block 9 is placed in the larger quadrangular groove 38 of the bottom width of the second T-shaped quadrangular groove 36, the upper surface of the second quadrangular pressing block 9 and the electromagnet block 11 The lower surface of the second quadrilateral pressing block 9 is flush with the lower surface of the disc flange 1; The number of the second threaded holes 12 of the second T-shaped quadrangular groove 36 of 1 is the same, and the axis of the second light hole 13 on the second quadrangular pressing block 9 is the same as that of the second T-shaped quadrangular groove 36 of the disk flange 1. The axis of the second threaded hole 12 coincides; the end face of the second quadrangular pressing block 9 is also arranged with a fourth light hole 40, the fourth light hole 40 must not overlap with the second light hole 13, the first lead 41 and the second The wire 42 passes through the fourth light hole 40 and is respectively connected to the positive and negative poles of the external power supply; the threaded end of the second bolt 10 passes through the second light hole 13 and is screwed into the second threaded hole 12, and when the second bolt 10 is tightened, the second Two bolts 10 compress the second quadrilateral briquetting block 9; the second bolt holes 24 are evenly distributed along a circumferential line of the disk flange 1, and the second bolt holes 24 must not overlap with the second T-shaped quadrilateral groove 36. Two bolt holes 24 are distributed outside the second T-shaped quadrilateral groove 36; Electromagnet block 11 and columnar permanent magnet block 7 attract each other because of magnetic force, the plane that electromagnet block 11 is divided into two parts up and down and columnar permanent magnet block 7. The planes that are equally divided into upper and lower parts overlap; the cylindrical hydraulic cylinder 2 passes through the third light hole 39 of the disc flange 1, the axis of the disc flange 1, the axis of the bottom disc flange 17, and the circle Cylindrical hydraulic cylinder 2, the axis of disc 32, the axis of circular shaft 8, the axis of piston 18, the axis of second circular spring 21 and the axis of first circular spring 16 coincide. The second T-shaped quadrilateral groove 36 in the disk flange 1 is the same as the first T-shaped quadrilateral groove 33 in the piston 18. One second T-shaped quadrilateral groove 36 is distributed with and only with one first T-shaped quadrilateral groove 33. On the same ray perpendicular to the axis of the disk 32. The upper surface of the bottom disc flange 17 is connected to the lower end surface of the cylindrical hydraulic cylinder 2 without leakage, the disc 32 is connected to the upper end surface of the cylindrical hydraulic cylinder 2 without leakage, and the lower end surface of the circular shaft 8 is connected to the bottom disc method The flange 17 is connected without leakage, and the upper end surface of the circular shaft 8 is flush with the upper end surface of the disc 32 and is connected without leakage. A closed non-leakage space filled with damping fluid 15; the first bolt holes 14 are evenly distributed along a circumferential line on the bottom disc flange 17, and the first bolt holes 14 are distributed outside the cylindrical hydraulic cylinder 2; the circular shaft 8 passes through Through the piston 18, the second circular spring 21 and the first circular spring 16; the piston 18 is located at the middle part of the cylindrical hydraulic cylinder 2; The upper end of 21 is connected with the top of the cylindrical surface of circular shaft 8, and the distance between the upper end of second circular spring 21 and the upper end surface of circular shaft 8 is the thickness of disk 32; The upper end of first circular spring 16 is connected with piston 18 The lower surface is connected, and the lower end of the first circular spring 16 is connected with the lowermost end of the cylindrical surface of the circular shaft 8; like this, it can be ensured that the line of action of the resultant force of the second spring 21 to the active force of the piston 18 is consistent with that of the circular shaft 8. The axis coincides; the line of action of the resultant force of the first spring 16 to the active force of the piston 18 coincides with the axis of the circular shaft 8; the axis of the cylinder 25 with disc flanges at both ends coincides with the axis of the disc flange 1, The second bolt holes 23 on the lower end disc flange 22 of the cylinder 25 with disc flanges at both ends have the same number and position as the third bolt holes 24 on the disc flange 1; Through the third bolt hole 24 and the second bolt hole 23, the cylinder 25 with the disc flange at both ends and the disc flange 1 are connected together, the upper surface of the disc flange 1 is connected with the disc flange at both ends. The lower end surface of the lower end disc flange 22 of the cylinder 25 of the flange fits; the fourth bolt hole 26 on the upper end disc flange 27 of the cylinder 25 with the disc flange at both ends has The axis of the cylinder 25 of the disc flange is evenly distributed on the same circumference; the axis of the third circular spring 28 and the fourth bolt on the upper end disc flange 27 of the cylinder 25 with the disc flange The axes of the holes 26 are coincident, the upper end of the third circular spring 28 is connected to the lower surface of the cylinder 29, and the lower end of the third circular spring 28 is connected to the upper surface of the disc 32; the cylinder 29 passes through the through hole 30 The inside is connected with the cylinder 25 with disc flanges at both ends, the upper end surface of the cylinder 29 is flush with the upper end surface of the upper end disc flange 27 of the cylinder 25 with disc flanges at both ends, and the cylinder The lower end face of 29 is flush with the lower end face of the upper end disc flange 27 of the cylinder 25 with disc flanges at both ends.

This non-leakage electromagnetic fluid damper is also characterized in that the second circular spring 21 and the first circular spring 16 are removed simultaneously, still obtaining an effective non-leakage electromagnetic fluid damper.

This non-leakage electromagnetic fluid damper is also characterized in that the second circular spring 21 is removed, still obtaining an effective non-leakage electromagnetic fluid damper.

The non-leakage electromagnetic fluid damper is also characterized by the removal of the first circular spring 16, still resulting in an effective non-leakage electromagnetic fluid damper.

This non-leakage electromagnetic fluid damper is also characterized by the removal of the third circular spring 28, still resulting in an effective non-leakage electromagnetic fluid damper.

Except for the electromagnet block 11 and the columnar permanent magnet block 7, all parts of the non-leakage damper are made of non-ferromagnetic metal or alloy material (such as aluminum alloy, stainless steel, etc.). The specific manufacturing process of the fluid damper can be carried out in the following steps:

Step 1: According to vibration control requirements, select disc flange 1, cylindrical hydraulic cylinder 2, circular shaft 8, piston 18, cylinder 25 with disc flanges at both ends, first circular spring 16 , the second circular spring 21, the third circular spring 28, the cylinder 29, the size of the first wire 41 and the second wire 42; selected silicone oil as the damping fluid 15; according to the vibration control requirements, selected the first bolt 3 , the first quadrilateral pressing block 4, the first optical hole 5, the first threaded hole 6, the columnar permanent magnet block 7, the second quadrilateral pressing block 9, the second bolt 10, the electromagnet block 11, the second screw thread Hole 12, second light hole 13, first bolt hole 14, small round through hole 19, second bolt hole 23, second bolt hole 24, fourth bolt hole 26, third bolt 31, third light hole 39, the first Two T-shaped quadrilateral grooves 36, the larger quadrilateral groove 38 of the bottom width of the second T-shaped quadrilateral groove 36, the smaller quadrilateral groove 37 of the upper width of the second T-shaped quadrilateral groove 36, round through hole 20, the first T-shaped quadrilateral Groove 33, the upper width of the first T-shaped quadrilateral groove 33 is a larger quadrilateral groove 34, the lower part of the first T-shaped quadrilateral groove 33 is a smaller width quadrilateral groove 35, the number and position of the through hole 30 and the fourth light hole 40 and size. The second T-shaped quadrilateral groove 36 in the disc flange 1 and the first T-shaped quadrilateral groove 33 position and quantity in the piston 18 correspond one by one, that is, the second T-shaped quadrilateral groove 36 in the disc flange 1 and the piston The number of first T-shaped quadrilateral grooves 33 in 18 is the same, and one second T-shaped quadrilateral groove 36 and only one first T-shaped quadrilateral groove 33 are distributed on the same ray perpendicular to the axis of the disc 32 . For example: according to the installation requirement that the piston 18 is located in the middle of the cylindrical hydraulic cylinder 2 after the damper is installed, after the damper is installed, the piston 18 will be in the magnetic force, the second circular spring 21, the first circular spring 16 and Under the combined action of gravity and other forces, they are in a state of force balance, and the parameters of the second circular spring 21 and the first circular spring 16 are determined by conventional mechanical calculations. The height of the cylinder 25 with disc flanges at both ends coincides with the plane that divides the electromagnet block 11 equally into two parts up and down and the plane that divides the columnar permanent magnet block 7 into two parts up and down equally" and "the third circle The length of spring 28 is not less than the maximum vibration displacement of vibrating body " these two conditions determine, for example when vibration is simple harmonic vibration, the height of cylindrical hydraulic cylinder 2 is not less than twice of the maximum vibration displacement of vibrating body.

The second step: the round shaft 8 passes through the round through hole 20 of the piston 18, one end of the second round spring 21 is welded on the upper surface of the piston 18, and the other end of the second round spring 21 is welded to the cylinder of the round shaft 8 On the top of the surface, the distance between the upper end of the second circular spring 21 and the upper end surface of the circular shaft 8 is the thickness of the disc 32; the upper end of the first circular spring 16 is welded on the lower surface of the piston 18, and the first circular spring 16 The lower end of the lower end is welded on the lowermost end of the cylindrical surface of the circular shaft 8; before and after welding, the axis of the circular shaft 8, the axis of the piston 18, the axis of the second circular spring 21 and the axis of the first circular spring 16 must coincide.

The third step: the columnar permanent magnet piece 7 is placed in the lower quadrilateral groove 35 of the first T-shaped quadrilateral groove 33 of the piston 18, and the magnetic poles of the columnar permanent magnet piece 7 point to the axial direction of the piston 18 and point away The axial direction of piston 18; the lower surface of the columnar permanent magnet block 7 fits with the lower surface of the first T-shaped quadrilateral groove 33, that is, the lower surface of the columnar permanent magnet block 7 and the bottom width of the first T-shaped quadrilateral groove 33 are smaller The lower surface of the quadrangular groove 35 fits; the first quadrangular briquetting block 4 is placed in the larger quadrangular groove 34 of the upper width of the first T-shaped quadrangular groove 33, and the lower surface of the first quadrangular briquetting block 4 Fit the upper surface of the columnar permanent magnet block 7, the upper surface of the first quadrangular pressing block 4 is flush with the upper surface of the piston 18; the axis of the first light hole 5 on the first quadrangular pressing block 4 Coincident with the axis of the first threaded hole 6 of the first T-shaped quadrilateral groove 33 of the piston 18; the threaded end of the first bolt 3 is screwed into the first threaded hole 6 through the first light hole 5 and tightened, the first bolt 3 When tightening, the first bolt 3 compresses the first quadrangular briquetting block 4 tightly.

Step 4: Weld the lower end surface of the circular shaft 8 to the upper surface of the bottom disc flange 17, and ensure that the axis of the bottom disc flange 17 coincides with the axis of the circular shaft 8 before and after welding.

Step 5: Put the cylindrical hydraulic cylinder 2 on the outside of the piston 18, and weld the lower end surface of the cylindrical hydraulic cylinder 2 to the upper surface of the bottom disc flange 17. Before and after welding, the bottom disc flange 17 must be ensured. The axis coincides with the axis of the cylindrical hydraulic cylinder 2 .

Step 6: Drill a circular hole a at the center of the disc 32. The diameter of the circular hole a is slightly larger than the diameter of the circular shaft 8 (take the specific value according to the conventional welding specification), and the axis of the circular hole a coincides with the axis of the disc 32. On the disk 32 about the axial symmetry of the disk 32, the small circular hole b and the small circular hole c are drilled, and the respective axes of the small circular hole b and the small circular hole c are equal to the distance of the axis of the circular disk 32 from the axis of the cylindrical hydraulic pressure Half of the sum of the inner radius of the cylinder 2 and the radius of the circular hole a, the radii of the small circular hole b and the small circular hole c are less than half of the value of the inner radius of the cylindrical hydraulic cylinder 2 minus the radius of the circular hole a one.

The seventh step: then insert the top of the circular shaft 8 in the circular hole a drilled in the sixth step, and the lower surface of the disk 32 is placed on the upper end surface of the cylindrical hydraulic cylinder 2 . Weld the upper end surface of the cylindrical hydraulic cylinder 2 on the lower surface of the disc 32, and then weld the upper end surface of the circular shaft 8 and the disc 32 at the hole a drilled in the sixth step. The axis of cylindrical hydraulic cylinder 2, the axis of disk 32, and the axis of circular shaft 8 coincide.

Step 8: First use the funnel to use silicone oil as the damping fluid to fill the cylindrical hydraulic cylinder 2 through the small round hole b drilled in the sixth step, and observe that the damping fluid has filled the cylindrical hydraulic cylinder 2 through the small round hole b and the small round hole c After the hydraulic cylinder 2, the small round hole b drilled in the sixth step and the small round hole c are welded and blocked.

Step 9: Place the electromagnet block 11 in the quadrilateral groove 37 with a smaller width on the upper part of the second T-shaped quadrilateral groove 36 of the disc flange 1; the magnetic poles of the electromagnet block 11 point to the axis of the disc flange 1 respectively Direction and pointing away from the axial direction of the disc flange 1; the upper surface of the electromagnet block 11 is attached to the upper surface of the second T-shaped quadrilateral groove 36, that is, the upper surface of the electromagnet block 11 and the second T-shaped quadrilateral groove 36 The upper surface of the quadrilateral groove 37 with a smaller upper width is pasted; the first lead 41 and the second lead 42 are passed through the fourth optical hole 40 to be connected to the positive and negative poles of the external power supply respectively, and the electromagnet block 11 is close to the circle after power-on. The magnetic polarity of one end of cylindrical hydraulic cylinder 2 is opposite to the magnetic polarity of columnar permanent magnet block 7 near one end of cylindrical hydraulic cylinder 2; In the large quadrangular groove 38, the upper surface of the second quadrangular briquetting block 9 fits the lower surface of the electromagnet block 11, and the lower surface of the second quadrangular briquetting block 9 is flush with the lower surface of the disc flange 1. Flat; the axis of the second light hole 13 on the second quadrilateral pressing block 9 is aligned with the axis of the second threaded hole 12 of the second T-shaped quadrilateral groove 36 of the disk flange 1 (coincident); the second The threaded end of the bolt 10 is screwed into the second threaded hole 12 through the second light hole 13 and tightened. When the second bolt 10 is tightened, the second bolt 10 compresses the second quadrilateral pressing block 9 tightly.

Step ten: Weld the lower end of the third circular spring 28 to the upper surface of the disc 32 , and weld the upper end of the third circular spring 28 to the lower surface of the cylinder 29 . The axis of the third circular spring 28, the axis of the cylindrical hydraulic cylinder and the axis of the cylinder 29 coincide.

Step 11: Pass the cylindrical hydraulic cylinder 2 through the third light hole 39 , that is, set the disc flange 1 outside the cylindrical hydraulic cylinder 2 .

The twelfth step: put the cylindrical hydraulic cylinder 2 into the cylinder 25 with disc flanges at both ends, ensure that the cylinder 29 is sleeved in the through hole 30, and connect the cylinder 29 with the round flanges at both ends. The upper end disc flange 27 of the disc flange cylinder 25 is welded, and the welding requirements ensure that the upper end surface of the cylinder 29 is flush with the upper end surface of the upper end disc flange 27 of the cylinder 25 with disc flanges at both ends , the lower end surface of the cylinder 29 is flush with the lower end surface of the upper disc flange 27 of the cylinder 25 with disc flanges at both ends.

The thirteenth step: use the third bolt 31 to pass through the third bolt hole 24 and the second bolt hole 23, and connect the disc flange 1 to the lower end disc flange 22 of the cylinder 25 with disc flanges at both ends. connect.

In the foregoing process, only the second circular spring 21 and the first circular spring 16 are removed at the same time, and an effective leak-free electromagnetic fluid damper is still obtained; similarly, only the second circular spring 21 is removed in the foregoing process, An effective non-leakage electromagnetic fluid damper is still obtained; similarly, only the first circular spring 16 is removed in the aforementioned process, and an effective non-leakage electromagnetic fluid damper is still obtained.

So far the present invention can be realized.

Claims (7)

1. one kind is not had the electromagnetic fluid of leakage damper; It is characterized in that this damper comprises: disk (32), the bottom disc flange (17) that is oppositely arranged with disk (32), disk (32) and bottom disc flange (17) do not had the cylinder (25) that the two ends of leaking the oil hydraulic cylinder (2) that is connected, first disc flange (1) that is provided with the 3rd unthreaded hole (39), having opening have disc flange; There is upper end disc flange (27) upper end that two ends have the cylinder (25) of disc flange, and there is lower end disc flange (22) lower end that two ends have the cylinder (25) of disc flange;

Bottom disc flange (17); Disk (32) and oil hydraulic cylinder (2) are formed closed no leakage space; Damp liquid (15) is full of this closed no leakage space; This closed no leakage space part be positioned at the cylinder (25) that two ends have disc flange; The lower end disc flange (22) that two ends have the cylinder (25) of disc flange links to each other with disc flange (1), and oil hydraulic cylinder (2) passes the 3rd unthreaded hole (39) of disc flange (1), disc flange (1) built-in electromagnetic iron block (11);

This damper also comprises along the piston (18) of oil hydraulic cylinder (2) axial motion, circular shaft (8) and permanent magnetic iron block (7); This piston (18) is positioned at the middle part of oil hydraulic cylinder (2); Piston (18) circle centre position is provided with round tube hole (20); Circular shaft (8) passes round tube hole (20); The lower end surface of circular shaft (8) does not have leakage with bottom disc flange (17) and is connected, and the upper-end surface of circular shaft (8) flushes with the upper-end surface of disk (32) and do not have to leak and is connected, and has little round tube hole (19) on the piston (18); When the line of action of making a concerted effort of damp liquid (15) suffered damping force of piston (18) during through little round tube hole (19) and the dead in line of circular shaft 8, permanent magnetic iron block (7) is arranged on piston (18) inside.

2. a kind of nothing according to claim 1 is leaked the electromagnetic fluid damper, and it is characterized in that: two ends have the axis of the cylinder (25) of disc flange, the axis of disc flange (1), the axis of oil hydraulic cylinder (2), the axis of bottom disc flange (17), the axis of circular shaft (8), the axis of piston (18), the dead in line of round tube hole (20).

3. a kind of nothing according to claim 1 is leaked the electromagnetic fluid damper, it is characterized in that: electromagnet block (11) attracts each other through magnetic force with permanent magnetic iron block (7), and the component of making a concerted effort in the horizontal direction of the suffered magnetic force of all permanent magnetic iron blocks (7) is zero; Can reach the direction and strong and weak purpose that change the electromagnetic field that electromagnet block (11) produced through the size and Orientation of electric current of adjustment electromagnet block (11); And then the size and Orientation of the suffered magnetic force of active adjustment permanent magnetic iron block (7), reach the purpose of Active Vibration Control.

4. a kind of nothing according to claim 1 is leaked the electromagnetic fluid damper, and it is characterized in that: circular shaft (8), its epimere are provided with second spring (21), obtains a kind of another kind of style of leaking the electromagnetic fluid damper of not having; Wherein: the lower end of second spring (21) is connected with piston (18) upper surface; The upper end of second spring (21) is connected with the top of circular shaft (8), and second spring (21) is to the dead in line of the line of action of making a concerted effort and the circular shaft (8) of the active force of piston (18).

5. a kind of nothing according to claim 1 is leaked the electromagnetic fluid damper, and it is characterized in that: the hypomere of said circular shaft (8) is provided with first spring (16), obtains a kind of another kind of style of leaking the electromagnetic fluid damper of not having; Wherein: the upper end of first spring (16) is connected with piston (18) lower surface; The lower end of first spring (16) is connected with circular shaft (8) bottom, and first spring (16) is to the dead in line of the line of action of making a concerted effort and the circular shaft (8) of the active force of piston (18).

6. leak the electromagnetic fluid damper according to claim 4 or 5 described a kind of nothings, it is characterized in that: said circular shaft (8) is provided with second spring (21), first spring (16), obtains a kind of another kind of style of leaking the electromagnetic fluid damper of not having; Wherein: the lower end of second spring (21) is connected with piston (18) upper surface, and the upper end of second spring (21) is connected with the top of circular shaft (8); The upper end of first spring (16) is connected with the lower surface of piston (18), and the lower end of first spring (16) is connected with circular shaft (8) bottom; This second spring (21) is to the dead in line of the line of action of making a concerted effort and the circular shaft (8) of the active force of piston (18); First spring (16) is to the dead in line of the line of action of making a concerted effort and the circular shaft (8) of the active force of piston (18).

7. a kind of nothing according to claim 6 is leaked the electromagnetic fluid damper; It is characterized in that: described upper end disc flange (27) and lower end are connected and are provided with the 3rd spring (28) between the disk (32), obtain a kind of another kind of style of leaking the electromagnetic fluid damper of not having; The upper end of the 3rd spring (28) is connected two ends and has on the lower end surface of upper end disc flange (27) of cylinder (25) of disc flange, and the lower end of the 3rd spring (28) is connected on the upper surface of disk (32).

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