TWI700445B - Fluid viscous damper - Google Patents

Abstract

This invention relates to a fluid viscous damper, comprising a cylinder, a piston assembly, an accumulation unit, a detector and a warning device. The cylinder has a first chamber filled with fluid. The piston assembly has a piston disposed in the cylinder and dividing the chamber into two rooms in communication with one another. The accumulation unit has a secondary chamber filled with fluid for making up any leakage of the fluid in the first chamber to maintain the oil pressure in the first chamber in consistency. The detector is configured to detect the fluid consumption in the second chamber and send out a detective signal if the fluid consumption has arrived in a predetermined value. The warning device is electrically connected with the detector. Upon reception of the detective signal from the detector, the warning device sends a warning signal, showing that the fluid lost in the first chamber has reached its limit.

Description

Liquid viscous damper

The present invention relates to a damper, especially a liquid viscous damper used for shock absorption or shock absorption of a building structure.

Taiwan Patent Publication No. 201116738 discloses an adjustable liquid flow damper applied to civil building structures to increase the damping coefficient of the civil building structure to achieve an effective shock absorption design. Although this kind of fluid damper can absorb vibration energy when an earthquake strikes, and achieve the effect of shock absorption and energy dissipation of the building structure, but the damper may cause the inner cylinder of the cylinder after many earthquakes or long-term use. The filling oil is depleted or leaked and cannot continue to effectively absorb the vibration energy. If the oil leakage problem is not solved immediately, the structure of the building will not be able to withstand the disaster caused by the earthquake in the future.

The present invention provides a liquid viscous damper that can be automatically refilled, and it can also actively monitor whether the oil leakage problem has reached the upper limit, as a reference for whether further replacement or maintenance is required, thereby ensuring the safety of the building.

Specifically, the liquid viscous damper of the present invention roughly includes a cylinder, a piston assembly, a pressure accumulation unit, a detection device, and a warning device. Wherein, the cylinder body has an oil pressure chamber, which is filled with a filling oil. The piston assembly includes a piston and a piston rod. The piston is arranged in the cylinder and divides the oil pressure chamber of the cylinder into a first oil chamber and a second oil chamber that are connected to each other. The piston rod can drive the displacement of the piston to change The space capacity of the first and second oil chambers. The pressure accumulation unit has an oil storage chamber in which a spare oil is stored. The pressure accumulation unit is used to automatically make the spare oil flow to the first oil chamber to make up for the loss of the filling oil when the filling oil in the oil pressure chamber of the cylinder is lost. In order to maintain the oil pressure in the oil pressure chamber of the cylinder at a predetermined pressure. The detecting device is used to detect the amount of spare oil in the oil storage chamber of the pressure storage unit, and output a sensing signal when the amount of spare oil is detected to reach a preset value. The warning device is electrically connected to the detection device to send a warning signal when receiving the sensing signal of the detection device to indicate that the filling oil consumption in the hydraulic chamber of the cylinder has reached the upper limit.

Preferably, the oil storage chamber of the pressure accumulation unit is defined in the piston rod, the oil storage chamber has an oil inlet and an oil outlet, the oil outlet is connected to the first oil chamber of the cylinder, and the pressure accumulation unit further includes a piston member And a propeller. The piston is embedded in the oil inlet of the oil storage chamber. The propeller can accumulate energy to gradually release energy when the filling oil in the oil pressure chamber of the cylinder is consumed. The spare oil is pushed to the first oil chamber of the cylinder block to make up for the loss of filling oil.

Preferably, the thruster of the pressure accumulation unit is a dish-shaped spring or a compressed air.

Preferably, the liquid viscous damper further includes a one-way valve which is arranged at the oil outlet of the oil storage chamber to restrict the filling oil in the oil pressure chamber of the cylinder from flowing back to the oil storage chamber.

Preferably, the detecting device is a displacement sensor for detecting the displacement of the piston member of the pressure accumulation unit.

Preferably, the detection device includes a magnetic ruler, a reading head, and an identification system. The magnetic ruler is arranged on the cylinder; the reading head is arranged on the piston to detect the magnetic change of the magnetic ruler to output a position signal ; The identification system is electrically connected to the reading head, and the displacement of the piston part is identified according to the position signal of the reading head.

Preferably, the cylinder includes a sleeve, a cover and a partition. The sleeve has a closed end and an open end. The cover seals the open end of the sleeve. The partition is fixed in the sleeve. The pressure chamber is defined in the sleeve and between the cover and the partition. The second oil chamber of the oil pressure chamber is defined between the cover and the piston of the piston assembly, and the first oil chamber of the oil pressure chamber is Defined between the piston and the partition of the piston assembly, the sleeve further defines an air chamber between the partition and the closed end of the sleeve. One end of the piston rod passes through the cover, the oil pressure chamber and Divider and extend into the air chamber.

Preferably, the end of the piston rod defines a cavity on its end surface. The cavity is connected to the oil storage chamber for accommodating the piston and the pusher of the pressure accumulating unit. The piston has a piston head and a shaft. The piston head is embedded At the oil inlet of the oil storage chamber, one end of the shaft is connected with the piston head, and the other end extends into the air chamber of the cylinder. The reading head of the detection device is set at the other end of the shaft.

Preferably, the shaft of the piston member defines a cavity at the end surface of the other end along its length direction, and one end of the magnetic ruler of the detecting device is fixed on the inner wall of the air chamber of the cylinder, and The other end of the magnetic ruler extends into the cavity of the shaft of the piston member.

1 to 3 show a preferred embodiment of the liquid viscous damper 100 of the present invention. As shown in FIG. 1, the damper 100 roughly includes a cylinder 1, a piston assembly 2, a pressure accumulation unit 3, a detection device 4 and a warning device 5.

As shown in FIG. 1, the cylinder block 1 includes a sleeve 11, a cover 12 and a partition 13. The sleeve 11 has a closed end 111 and an open end 112. The closed end 111 is integrally connected to a fisheye connector 113 for fixing one end of the damper 100 to a pin seat (not shown) on the building. The cover 12 seals the open end 112 of the sleeve 11, and the partition 13 is fixed in the sleeve 11. The sleeve 11 has an oil pressure chamber 14 and an air chamber 15. The oil pressure chamber 14 is located between the cover 12 and the partition 13 and is filled with a filling oil L1. The air chamber 15 is located between the partition 13 and the closed end 11 of the sleeve 11 and is filled with gas.

The piston assembly 2 includes a piston 21 and a piston rod 22. The piston 21 is arranged in the cylinder 1 and partitions the oil pressure chamber 14 of the cylinder 1 into a first oil chamber 141 and a second oil chamber 142. An oil chamber 141 is defined between the piston 21 and the partition 13, and a second oil chamber 142 is defined between the cover 12 and the piston 21. In addition, there is an appropriate gap between the peripheral wall of the piston 21 and the tube wall of the sleeve 11 and the piston 21 has at least one through hole 210 so that the first oil chamber 141 and the second oil chamber 142 can communicate with each other. The piston rod 22 can drive the displacement of the piston 21 to change the space capacity of the first oil chamber 141 and the second oil chamber 142 to provide a damping effect. One end of the piston rod 22 passes through the cover 12, the oil pressure chamber 14 and the partition 13, and extends into the air chamber 15. In addition, the piston rod 22 defines a recessed chamber 220 on the end surface of its end. The other end of the piston rod 22 is formed with a fisheye connector 221 for fixing the other end of the damper 100 to another pin seat (not shown) on the building.

The pressure accumulating unit 3 has an oil storage chamber 31 which is defined in the piston rod 22 and communicates with the recess 220 of the piston rod 22, and the oil storage chamber 31 stores a spare oil L2. The accumulating unit 3 is used to automatically make the spare oil L2 flow to the first oil chamber 141 when the filling oil L1 in the oil pressure chamber 14 of the cylinder block 1 is consumed to make up for the loss of the filling oil L1, so that the The oil pressure in the oil pressure chamber 14 is maintained at a predetermined pressure.

3, the detection device 4 is used to detect the amount of spare oil L2 in the oil storage chamber 31 of the accumulating unit 3, and output a sensor when detecting that the amount of spare oil L2 reaches a preset value Signal. The warning device 5 is electrically connected to the detection device 4, and is used to send a warning signal when receiving the sensing signal of the detection device 4, indicating that the filling oil L1 in the oil pressure chamber 14 of the cylinder 1 has reached the upper limit. .

In detail, as shown in the enlarged view of FIG. 2, the oil storage chamber 31 of the pressure accumulation unit 3 has an oil inlet 311 and an oil outlet 312. The oil outlet 312 communicates with the first oil chamber 141 of the oil pressure chamber 14 of the cylinder block 1, and the oil outlet 312 is provided with a one-way valve 6 to restrict the filling oil L1 in the oil pressure chamber 14 of the cylinder block 1 from flowing back to the oil storage Room 31. In addition, the pressure accumulating unit 3 further includes a piston member 32 and a propeller 33 located in the cavity 220 at the end of the piston rod 22. The piston 32 has a piston head 320 and a shaft 321. The piston head 320 is embedded in the oil inlet 311 of the oil storage chamber 31. One end of the shaft 321 is connected to the piston head 320, and the other end extends into the air chamber 15 of the cylinder 1.

The propeller 33 of the accumulating unit 3 can accumulate energy to gradually release the energy when the filling oil L1 in the oil pressure chamber 14 of the cylinder 1 is consumed, so as to push the piston member 32 to push the spare oil L2 in the oil storage chamber 31 The first oil chamber 141 of the cylinder block 1 makes up for the loss of the filling oil L1. In this preferred embodiment, the pusher 33 adopts a dish-shaped spring composed of a plurality of discs mixed and stacked in the same and reverse directions, but it is not limited to this. In other examples, the thruster of the pressure accumulation unit 3 can also be a compression spring or an air spring.

2 again, in this preferred embodiment, the detecting device 4 is a displacement sensor for detecting the displacement of the piston member 32 of the pressure accumulating unit 3. In detail, the detection device 4 includes a magnetic ruler 41, a reading head 42, and an identification system 43 (FIG. 3). One end of the magnetic ruler 41 is fixed on the inner wall of the air chamber 15 of the cylinder 1, and The other end extends into a cavity 322 of the shaft 321 of the piston member 32. The recess 322 of the shaft 321 is defined on the end surface of the other end of the shaft 321 along the length direction of the shaft 321 of the piston member 32. The reading head 42 is arranged on the other end of the shaft 321 of the piston member 32 and located in the air chamber 15 of the cylinder 1. When the spare oil L2 is continuously output to the first oil chamber 141, the reading head 42 will detect the magnetic change of the magnetic ruler 41 in front of the piston 32 to output a position signal. The identification system 43 is electrically connected to the reading head 42 and recognizes the displacement of the piston member 32 according to the position signal of the reading head 42 to obtain the amount of spare oil L2. When the identification system 43 knows that the amount of spare oil L2 reaches the preset value, it immediately informs the warning device 5 to send a warning signal through an indicator light 51 or a monitoring screen, etc., so that the user can detect the hydraulic chamber 14 of the cylinder 1 The consumption of the filling oil L1 inside has reached the upper limit, and then it is known whether it needs to be replaced or repaired to ensure safety.

10‧‧‧Dampener 1‧‧‧Cylinder 11‧‧‧Sleeve 111‧‧‧Closed end 112‧‧‧Open end 113‧‧‧Fisheye connector 12‧‧‧Cover 13‧‧‧Separator 14‧‧‧Hydraulic chamber 141‧‧‧First oil chamber 142‧‧‧Second oil chamber 15‧‧‧Air Chamber 2‧‧‧Piston assembly 21‧‧‧Piston 210‧‧‧through pores 22‧‧‧Piston rod 220‧‧‧Alcove 221‧‧‧Fisheye connector 3‧‧‧Pressure storage unit 31‧‧‧Oil storage room 311‧‧‧Inlet 312‧‧‧Oil outlet 32‧‧‧Piston 320‧‧‧Piston head 321‧‧‧Shaft 322‧‧‧Cave 33‧‧‧Propeller 4‧‧‧Detection device 41‧‧‧Magnetic ruler 42‧‧‧Reading head 43‧‧‧Identification System 5‧‧‧Warning device 51‧‧‧Indicator 6‧‧‧One-way valve L1‧‧‧Filling oil L2‧‧‧Spare oil

Figure 1 is a schematic cross-sectional view of the liquid viscous damper of the present invention. Fig. 2 is a partial enlarged schematic diagram of the liquid viscous damper of Fig. 1. FIG. 3 is a system block diagram of the liquid viscous damper of FIG. 1.

10‧‧‧Dampener

1‧‧‧Cylinder

111‧‧‧Closed end

113‧‧‧Fisheye connector

12‧‧‧Cover

14‧‧‧Hydraulic chamber

141‧‧‧First oil chamber

2‧‧‧Piston assembly

21‧‧‧Piston

22‧‧‧Piston rod

3‧‧‧Pressure storage unit

32‧‧‧Piston

33‧‧‧Propeller

4‧‧‧Detection device

42‧‧‧Reading head

11‧‧‧Sleeve

112‧‧‧Open end

13‧‧‧Separator

15‧‧‧Air Chamber

142‧‧‧Second oil chamber

210‧‧‧through pores

221‧‧‧Fisheye connector

31‧‧‧Oil storage room

322‧‧‧Cave

41‧‧‧Magnetic ruler

6‧‧‧One-way valve

Claims (7)

A liquid viscous damper, comprising: a cylinder with an oil pressure chamber filled with a filling oil; a piston assembly comprising a piston and a piston rod, the piston is arranged in the cylinder and the The oil pressure chamber of the cylinder is divided into a first oil chamber and a second oil chamber which are connected to each other. The piston rod can drive the displacement of the piston to change the space capacity of the first and second oil chambers. The piston rod has a recessed chamber; an oil storage chamber is defined in the piston rod and communicates with the recessed chamber of the piston rod, wherein spare oil is stored in the oil storage chamber; a piston member has a piston head and a shaft rod, The piston head is movably arranged in the recessed chamber of the piston rod, and one end of the shaft rod is connected to the piston head; a propeller is provided in the recessed chamber of the piston rod for being in the hydraulic chamber of the cylinder When the filling oil is depleted, the piston is pushed so that the spare oil in the oil storage chamber flows to the first oil chamber of the oil pressure chamber, so as to make up for the loss of the filling oil; a displacement sensor is arranged in the cylinder , Can know the amount of spare oil in the oil storage chamber by detecting the displacement of the piston, and output a sensing signal when the amount of spare oil reaches a preset value. The liquid viscous damper described in item 1 of the scope of patent application, wherein the thruster of the pressure accumulating unit is a dish-shaped spring. The liquid viscous damper described in item 1 of the scope of patent application, wherein the propeller of the pressure accumulating unit is an air spring. The liquid viscous damper described in item 1 of the scope of patent application further includes a one-way valve arranged on the piston rod and located in the first oil chamber and the oil storage chamber of the cylinder Between, to restrict the filling oil in the first oil chamber of the cylinder from flowing back to the oil storage chamber. The liquid viscous damper as described in item 1 of the scope of patent application, wherein the displacement sensor includes a magnetic ruler, and the shaft of the piston member defines a cavity at the other end along its length direction, One end of the magnetic ruler of the displacement sensor is fixed on the inner wall of the air chamber of the cylinder, and the other end of the magnetic ruler extends into the cavity of the shaft of the piston member. The liquid viscous damper described in item 1 of the scope of patent application, wherein the cylinder includes a sleeve, a cover and a partition, the sleeve has a closed end and an open end, and the cover seals Holding the open end of the sleeve, the partition is fixed in the sleeve, the oil pressure chamber is defined in the sleeve and between the cover and the partition, wherein the second oil pressure chamber The second oil chamber is defined between the cover and the piston of the piston assembly, the first oil chamber of the oil pressure chamber is defined between the piston of the piston assembly and the partition, and the sleeve further defines an air chamber The air chamber is between the partition and the closed end of the sleeve, and one end of the piston rod passes through the cover, the oil pressure chamber and the partition, and extends into the air chamber. For the liquid viscous damper described in item 5 of the scope of patent application, the displacement sensor further includes a reading head and an identification system. The reading head is arranged on the piston for detecting the magnetic ruler The magnetism changes to output a position signal; the identification system is electrically connected to the reading head, and the displacement of the piston member is identified according to the position signal of the reading head.

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