Double-order viscous damper

Abstract

The utility model discloses a double-order viscous damper which comprises a cylinder body, a first piston rod and a second piston rod, a first piston head and a second piston head are respectively provided with a plurality of flow holes, the flow hole of the first piston head is communicated with two first damping liquid cavities, and the flow hole of the second piston head is communicated with two second damping liquid cavities. A flowing hole of the second piston head is communicated with the first damping liquid cavity and the second damping liquid cavity located on the right side, the flowing hole comprises two horn sections and a straight flow section, the inner diameter of the straight flow section is constant, the horn sections are connected to the two ends of the straight flow section, and the inner diameters of the horn sections are gradually reduced from the end away from the straight flow section to the end close to the straight flow section. The flow holes in the first piston head and the second piston head are used for guiding the internal viscous damping medium, so that friction is generated between the viscous damping medium and the flow holes, double-stage energy consumption is achieved, and the damping capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to a double-order viscous damper. Background Art

[0002] The viscous fluid damper is an energy dissipation and vibration reduction device widely used in the field of civil engineering. It generates damping force by allowing liquid to flow through small holes during the reciprocating motion of the piston, thereby controlling structural vibration. For example, the utility model patent with application number CN202120361855.2 discloses a viscous fluid damper, including: a cylinder, the cylinder includes a main cylinder and a sub-cylinder, the sub-cylinder is arranged at one axial end of the main cylinder, the sub-cylinder is coaxially arranged with the main cylinder, and the first guide sleeve and the second guide sleeve are arranged at both ends of the main cylinder, the first guide sleeve and the second guide sleeve are arranged in the main cylinder and fixedly connected to the main cylinder; a piston rod, a piston is sleeved on the piston rod, the piston is located between the first guide sleeve and the second guide sleeve, the piston is fixedly connected to the piston rod, and a movable structure is fixedly connected to the two ends of the cylinder, the movable structure includes a fixed part, the fixed part is respectively fixedly connected to the front end of the piston rod and the rear end of the sub-cylinder, the fixed part is movably connected to a movable part that can rotate at multiple angles along the fixed part, an active space is formed between the fixed part and the movable part, and an earring is fixedly connected to the movable part. Energy is dissipated by the damping force generated by the viscous fluid built into the cylinder, but the existing viscous damper of this type can only achieve one-time energy dissipation. At the same time, it is easy to cause blockage during the flow of the viscous fluid, affecting the fluidity and further affecting its effect on consuming vibration energy. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a double-stage viscous damper, which can achieve double-stage energy dissipation and improve shock absorption capacity.

[0004] The double-stage viscous damper according to the first aspect of the utility model comprises a cylinder body, a first piston rod and a second piston rod. The cylinder body is straight-cylindrical, and both ends of the cylinder body are sealed. The interior of the cylinder body is hollow and filled with a viscous damping medium. One end of the first piston rod is passed through the left end of the cylinder body and is provided with a first connecting portion, and the other end is fixedly connected to a first piston head. The first piston head is embedded in the cylinder body and can slide in the cylinder body, and divides the internal space of the cylinder body into two relatively independent first damping liquid chambers. A groove is provided on the side of the first piston head facing the right end of the cylinder body. One end of the second piston rod is passed through the right end of the cylinder body and is provided with a second connecting portion, and the other end is fixedly connected to the second piston head. The second piston The head is embedded in the groove and can slide in the groove along the length direction of the cylinder body, and the second piston head closes the groove to cooperate with the groove to construct a second damping liquid chamber separated from the first damping liquid chamber; wherein, the first piston head and the second piston head are both provided with a plurality of flow holes, the flow holes of the first piston head connect the two first damping liquid chambers, and the flow holes of the second piston head connect the first damping liquid chamber and the second damping liquid chamber located on the right side, and the flow holes include two horn sections and a DC section, the inner diameter of the DC section is constant, and the horn section is connected to both ends of the DC section, and the inner diameter of the horn section gradually decreases from the end away from the DC section to the end close to the DC section.

[0005] The double-stage viscous damper according to the embodiment of the utility model has at least the following beneficial effects: the flow holes in the first piston head and the second piston head are used to guide the internal viscous damping medium, so that friction is generated between the viscous damping medium and the flow holes, thereby realizing double-stage energy dissipation and improving the shock absorption capacity.

[0006] According to some embodiments of the present utility model, the connection between the DC section and the speaker section has a smooth transition.

[0007] According to some embodiments of the present invention, there is a smooth transition between the end of the horn section and the end surface of the first piston head or the second piston head.

[0008] According to some embodiments of the present invention, the first connecting portion and the second connecting portion are both connecting ears, the connecting ears are fixedly connected to the end of the first piston rod, and the connecting ears are fixedly connected to the end of the second piston rod.

[0009] According to some embodiments of the utility model, a first sealing groove is arranged around the side wall of the first piston head, and a first sealing rubber ring is embedded in the first sealing groove; a second sealing groove is arranged around the side wall of the second piston head, and a second sealing rubber ring is embedded in the second sealing groove.

[0010] According to some embodiments of the utility model, both ends of the cylinder body are through-set, and both ends of the cylinder body are detachably connected with rubber plugs, and the rubber plugs are used to close the two ends of the cylinder body.

[0011] According to some embodiments of the utility model, steps are provided at both ends of the cylinder body, and the edge of the end of the rubber plug protrudes to form a mounting ring, and the mounting ring overlaps the steps.

[0012] According to some embodiments of the utility model, a first thread is provided on the outer side of the mounting ring, a second thread is provided on the inner side of the cylinder body, and the rubber plug is embedded in the cylinder body so that the first thread and the second thread are engaged.

[0013] According to some embodiments of the present utility model, a plurality of third sealing rubber rings are arranged between the rubber plug and the inner wall of the cylinder body.

[0014] According to some embodiments of the utility model, the first piston rod and the second piston rod respectively penetrate the two rubber plugs and are slidably connected to the two rubber plugs respectively, and a fourth sealing rubber ring is provided between the first piston rod and the rubber plug and between the second piston rod and the rubber plug.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 It is a schematic diagram of a double-stage viscous damper according to an embodiment of the present utility model.

[0018] 100, cylinder body; 110, first damping liquid chamber; 120, step; 130, third sealing rubber ring;

[0019] 200, first piston rod; 210, first connecting portion; 220, first piston head; 221, groove; 230, first sealing rubber ring;

[0020] 300, second piston rod; 310, second connecting portion; 320, second piston head; 321, second damping liquid chamber; 330, second sealing rubber ring;

[0021] 400, flow hole; 410, horn section; 420, direct current section;

[0022] 500, rubber plug; 510, mounting ring; 520, fourth sealing rubber ring;

[0023] 600, viscous damping medium; DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1The double-stage viscous damper of the first embodiment of the present utility model comprises a cylinder body 100, a first piston rod 200 and a second piston rod 300. The cylinder body 100 is a straight cylinder, and both ends of the cylinder body 100 are sealed. The interior of the cylinder body 100 is hollow and filled with a viscous damping medium 600; one end of the first piston rod 200 is passed through the left end of the cylinder body 100 and is provided with a first connecting portion 210, and the other end is fixedly connected with a first piston head 220, the first piston head 220 is embedded in the cylinder body 100, and can slide in the cylinder body 100, and divides the internal space of the cylinder body 100 into two relatively independent first damping liquid chambers 110, and the first piston head 220 is provided with a groove 221 on the side facing the right end of the cylinder body 100; one end of the second piston rod 300 is passed through the right end of the cylinder body 100 and is provided with a second connecting portion 310, and the other end is fixedly connected with the second piston head 320, the second The piston head 320 is embedded in the groove 221 and can slide in the groove 221 along the length direction of the cylinder body 100. The second piston head 320 closes the groove 221 to cooperate with the groove 221 to construct a second damping liquid chamber 321 separated from the first damping liquid chamber 110; wherein, the first piston head 220 and the second piston head 320 are both provided with a plurality of flow holes 400, the flow holes 400 of the first piston head 220 connect the two first damping liquid chambers 110, and the flow holes 400 of the second piston head 320 connect the first damping liquid chamber 110 and the second damping liquid chamber 321 located on the right side, and the flow holes 400 include two horn sections 410 and a direct current section 420, the inner diameter of the direct current section 420 is constant, and the horn section 410 is connected to both ends of the direct current section 420, and the inner diameter of the horn section 410 gradually decreases from the end away from the direct current section 420 to the end close to the direct current section 420.

[0029] The flow holes 400 in the first piston head 220 and the second piston head 320 can be used to guide the internal viscous damping medium 600, so that friction is generated between the viscous damping medium 600 and the flow holes 400, thereby achieving double-stage energy consumption and improving the shock absorption capability.

[0030] Furthermore, the double-stage viscous damper of the second embodiment of the present invention includes a cylinder 100, a first piston rod 200 and a second piston rod 300. The cylinder 100 is a straight cylinder, and both ends of the cylinder 100 are sealed. The interior of the cylinder 100 is hollow and filled with a viscous damping medium 600. One end of the first piston rod 200 is passed through the left end of the cylinder 100 and is provided with a first connecting portion 210, and the other end is fixedly connected with a first piston head 220. The first piston head 220 is embedded in the cylinder 100 and can slide in the cylinder 100, and divides the internal space of the cylinder 100 into The first damping liquid chamber 110 is separated into two relatively independent first damping liquid chambers 110, and a groove 221 is provided on the side of the first piston head 220 facing the right end of the cylinder body 100; one end of the second piston rod 300 is penetrated through the right end of the cylinder body 100, and is provided with a second connecting portion 310, and the other end is fixedly connected with the second piston head 320, the second piston head 320 is embedded in the groove 221, and can slide in the groove 221 along the length direction of the cylinder body 100, and the second piston head 320 closes the groove 221, so as to cooperate with the groove 221 to construct a second damping liquid chamber 321 separated from the first damping liquid chamber 110;The first piston head 220 and the second piston head 320 are both provided with a plurality of flow holes 400. The flow holes 400 of the first piston head 220 are connected to the two first damping liquid chambers 110. The flow holes 400 of the second piston head 320 are connected to the first damping liquid chamber 110 and the second damping liquid chamber 321 located on the right side. The flow holes 400 include two horn sections 410 and a DC section 420. The inner diameter of the DC section 420 is constant. The horn sections 410 are connected to both ends of the DC section 420. From the end away from the DC section 420, toward Towards the end close to the DC section 420, the inner diameter of the horn section 410 gradually decreases, the DC section 420 and the horn section 410 are connected at a smooth transition, and the end of the horn section 410 and the end surface of the first piston head 220 or the second piston head 320 are smoothly transitioned, the first connecting portion 210 and the second connecting portion 310 are both connecting ears, the connecting ears are fixedly connected to the end of the first piston rod 200, and the connecting ears are fixedly connected to the end of the second piston rod 300, and the side wall of the first piston head 220 is surrounded by a first sealing groove The first sealing groove is embedded with a first sealing rubber ring 230, the side wall of the second piston head 320 is surrounded by a second sealing groove, the second sealing groove is embedded with a second sealing rubber ring 330, the two ends of the cylinder body 100 are penetrated, and the two ends of the cylinder body 100 are detachably connected with rubber plugs 500, the rubber plugs 500 are used to seal the two ends of the cylinder body 100, and the rubber plugs 500 seal the two ends of the cylinder body 100 so that the internal space of the cylinder body 100 is sealed, and the first piston rod 200 and the second piston rod 300 respectively penetrate Two rubber plugs 500 are provided, and are slidably connected with the two rubber plugs 500 respectively. A fourth sealing rubber ring 520 is provided between the first piston rod 200 and the rubber plug 500, and between the second piston rod 300 and the rubber plug 500. Steps 120 are provided at both ends of the cylinder body 100. The edge of the end of the rubber plug 500 protrudes to form a mounting ring 510. The mounting ring 510 overlaps the step 120. A plurality of third sealing rubber rings 130 are provided between the rubber plug 500 and the inner wall of the cylinder body 100. ;

[0031] In actual use, the first connecting portion 210 and the second connecting portion 310 located at both ends of the cylinder body 100 are used to connect building components. When the first connecting portion 210 and the second connecting portion 310 are relatively displaced, the first piston rod 200 will drive the first piston head 220 to move in the cylinder body 100. At the same time, the second piston head 320 movably connected to the first piston head 220 also slides in the groove 221. During the sliding of the first piston head 220, the viscous damping medium 600 in the two first damping liquid chambers 110 will flow, and the viscous damping medium 600 in the first damping liquid chamber 110 and the second damping liquid chamber 321 on the right side will also flow. During the flow of the viscous damping medium 600, it will flow from the high The high-pressure chamber flows to the low-pressure chamber, and a damping force is generated in the process of the viscous damping medium 600 flowing through the flow hole 400. The damping forces are respectively generated in the flow holes 400 in the first piston head 220 and the second piston head 320, thereby forming a two-stage damping energy consumption. It should be emphasized that in the structure of the embodiment of the present application, when the viscous damping medium 600 flows in from the bell section 410, passes through the direct current section 420, and finally flows out from the bell section 410, the resistance of the inflow process gradually increases, so that the damping effect gradually increases, and the release process is a radial process, so that the viscous damping medium 600 can be instantly released into the low-pressure chamber, thereby promoting the flow of the viscous damping medium 600 and avoiding blockage of the viscous damping medium 600.

[0032] In summary, the flow holes 400 in the first piston head 220 and the second piston head 320 can be used to guide the internal viscous damping medium 600, so that friction is generated between the viscous damping medium 600 and the flow holes 400, achieving double-stage energy dissipation and improving shock absorption capability.

[0033] In order to guide the viscous damping medium 600 and prevent the viscous damping medium 600 from being blocked in the flow hole 400, the connection between the direct current section 420 and the bell section 410 is smoothly transitioned, and the end of the bell section 410 and the end face of the first piston head 220 or the second piston head 320 are smoothly transitioned.

[0034] Specifically, it can be seen in the above-mentioned embodiments that the first connection part 210 and the second connection part 310 are used to connect building components. To this end, the first connection part 210 and the second connection part 310 are both connecting ears, which are fixedly connected to the end of the first piston rod 200 and the end of the second piston rod 300.

[0035] In some embodiments, in order to improve the sealing performance inside the entire cylinder body 100, so that the two first damping liquid chambers 110 remain isolated, and thus the viscous damping medium 600 can and only can flow through the flow hole 400 from one first damping liquid chamber 110 to the other first damping liquid chamber 110, a first sealing groove is arranged around the side wall of the first piston head 220, and a first sealing rubber ring 230 is embedded in the first sealing groove; similarly, in order to isolate the first damping liquid chamber 110 and the second damping liquid chamber 321 on the right side, so that the viscous damping medium 600 can and only can flow through the flow hole 400 between the first damping liquid chamber 110 and the second damping liquid chamber 321 on the right side, a second sealing groove is arranged around the side wall of the second piston head 320, and a second sealing rubber ring 330 is embedded in the second sealing groove. Specifically, the first sealing rubber ring 230 and the second sealing rubber ring 330 are used to improve the sealing performance between the first piston head 220 and the cylinder body 100, and between the second piston head 320 and the groove 221.

[0036] Specifically, in some embodiments, both ends of the cylinder body 100 are penetrated, and both ends of the cylinder body 100 are detachably connected with rubber plugs 500, which are used to close the two ends of the cylinder body 100. The rubber plug 500 seals the two ends of the cylinder body 100 so that the internal space of the cylinder body 100 is sealed. At the same time, in the two-stage viscous damper, the first piston rod 200 and the second piston rod 300 respectively penetrate the two rubber plugs 500 and are respectively slidably connected to the two rubber plugs 500. A fourth sealing rubber ring 520 is provided between the first piston rod 200 and the rubber plug 500, and between the second piston rod 300 and the rubber plug 500. The sealing of the cylinder body 100 is ensured by the fourth sealing rubber ring 520.

[0037] Furthermore, steps 120 are provided at both ends of the cylinder body 100, and the edges of the ends of the rubber plug 500 protrude to form a mounting ring 510, and the mounting ring 510 overlaps the steps 120. The rubber plug 500 is installed in place by the cooperation of the mounting ring 510 and the steps 120, and in order to ensure the stability of the installation, the outer side of the mounting ring 510 is provided with a first thread (not shown in the figure), and the inner side of the cylinder body 100 is provided with a second thread (not shown in the figure), and the rubber plug 500 is embedded in the cylinder body 100 so that the first thread and the second thread are engaged.

[0038] Preferably, in the above structure, in order to improve the sealing performance and prevent the viscous damping medium 600 from overflowing, a plurality of third sealing rubber rings 130 are arranged between the rubber plug 500 and the inner wall of the cylinder body 100 .

[0039] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A two-stage viscous damper, characterized in that: include: The cylinder body (100) is in a straight cylindrical shape, both ends of the cylinder body (100) are sealed, and the interior of the cylinder body (100) is hollow and filled with a viscous damping medium (600); A first piston rod (200), one end of which is passed through the left end of the cylinder body (100) and is provided with a first connecting portion (210), and the other end of which is fixedly connected with a first piston head (220); the first piston head (220) is embedded in the cylinder body (100) and can slide in the cylinder body (100) and divide the internal space of the cylinder body (100) into two relatively independent first damping liquid chambers (110); a groove (221) is provided on one side of the first piston head (220) facing the right end of the cylinder body (100); A second piston rod (300), one end of which is passed through the right end of the cylinder body (100) and is provided with a second connecting portion (310), and the other end of which is fixedly connected with a second piston head (320), the second piston head (320) being embedded in the groove (221) and being able to slide in the groove (221) along the length direction of the cylinder body (100), the second piston head (320) closing the groove (221) to cooperate with the groove (221) to construct a second damping liquid chamber (321) separated from the first damping liquid chamber (110); Wherein, the first piston head (220) and the second piston head (320) are both provided with a plurality of flow holes (400), the flow holes (400) of the first piston head (220) are connected to the two first damping liquid chambers (110), and the flow holes (400) of the second piston head (320) are connected to the first damping liquid chamber (110) and the second damping liquid chamber (321) located on the right side, and the flow holes (400) include two horn sections (410) and a direct current section (420), the inner diameter of the direct current section (420) is constant, the horn section (410) is connected to both ends of the direct current section (420), and the inner diameter of the horn section (410) gradually decreases from the end away from the direct current section (420) to the end close to the direct current section (420).

2. The dual-stage viscous damper according to claim 1, characterized in that: The connection between the DC section (420) and the horn section (410) is smoothly transitioned.

3. The dual-stage viscous damper according to claim 1 or 2, characterized in that: There is a smooth transition between the end of the bell section (410) and the end surface of the first piston head (220) or the second piston head (320).

4. The dual-stage viscous damper according to claim 1, characterized in that: The first connecting portion (210) and the second connecting portion (310) are both connecting lugs, wherein the connecting lug is fixedly connected to the end of the first piston rod (200), and the connecting lug is fixedly connected to the end of the second piston rod (300).

5. The dual-stage viscous damper according to claim 1, characterized in that: A first sealing groove is arranged around the side wall of the first piston head (220), and a first sealing rubber ring (230) is embedded in the first sealing groove; a second sealing groove is arranged around the side wall of the second piston head (320), and a second sealing rubber ring (330) is embedded in the second sealing groove.

6. The dual-stage viscous damper according to claim 1, characterized in that: The two ends of the cylinder body (100) are penetrated, and the two ends of the cylinder body (100) are detachably connected with rubber plugs (500), and the rubber plugs (500) are used to seal the two ends of the cylinder body (100).

7. The dual-stage viscous damper according to claim 6, characterized in that: Both ends of the cylinder body (100) are provided with steps (120), and the edge of the end of the rubber plug (500) protrudes to form a mounting ring (510), and the mounting ring (510) overlaps the steps (120).

8. The dual-stage viscous damper according to claim 7, characterized in that: The outer side of the mounting ring (510) is provided with a first thread, the inner side of the cylinder body (100) is provided with a second thread, and the rubber plug (500) is embedded in the cylinder body (100) so that the first thread and the second thread are meshed.

9. The dual-stage viscous damper according to claim 6, characterized in that: A plurality of third sealing rubber rings (130) are arranged between the rubber plug (500) and the inner wall of the cylinder body (100).

10. The dual-stage viscous damper according to claim 6, characterized in that: The first piston rod (200) and the second piston rod (300) respectively penetrate the two rubber plugs (500) and are respectively slidably connected to the two rubber plugs (500). A fourth sealing rubber ring (520) is provided between the first piston rod (200) and the rubber plug (500), and between the second piston rod (300) and the rubber plug (500).

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