Pore type viscous damper

Abstract

The utility model discloses a pore type viscous damper which comprises a cylinder barrel, sealing end covers, pistons and a piston rod, the sealing end covers and the pistons are arranged at the two ends of the cylinder barrel, the piston rod is installed in the cylinder barrel and penetrates through the two sealing end covers and the pistons, and the pistons comprise three sub-pistons which are the first piston, the second piston and the third piston. The piston divides the cylinder barrel filled with the damping liquid into a first cavity and a second cavity, a damping hole extension pipe is arranged between the first piston and the second piston, the third piston is arranged between the first piston and the second piston, the damping hole extension pipe penetrates through the third piston, and the third piston is fixedly connected with the damping hole extension pipe. The length of the damping hole can be effectively increased, the length of the damping hole can be self-adaptively adjusted, and the damper is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building structure technical field relates to building structure energy dissipation and shock attenuation device, concretely relates to a porous viscous damper. BACKGROUND

[0002] In modern structure system, the structure seismic performance is very important, thus needs to utilize various ways to promote the structure seismic capacity, in addition to promoting the structure itself's seismic capacity, the introduction energy dissipation and shock attenuation system can also effectively protect the structure main body, when the building structure encounters big external load, along with building structure deformation increases, the shock attenuation system will provide additional damping ratio for the structure, dissipates the external load effect, reduces the structure vibration response, thereby protects the structure.

[0003] At present, there are many dampers in use, among them, viscous damper is widely used, viscous damper generates damping force through the relative movement of internal fluid (such as silicon oil) and piston, can efficiently absorb and dissipate the energy generated by earthquake or wind load, reduces the structure vibration. Its energy dissipation efficiency is high, can reach above 90%. But the existing viscous damper when encountering major load, due to its fixed length of damping hole, cannot carry out dynamic adjustment, is easy to dissipate energy not in time, instantaneous damping force is too large, leading to the structure damage. Therefore, an economical and practical and long service life damper is urgently needed. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems existing in prior art, provides a porous viscous damper, the porous viscous damper can adjust the length of damping hole with the size of load and thus adjust damping force, avoid the damage of damper due to instantaneous load being too large and cannot work.

[0005] The utility model aims at solving the following technical scheme:

[0006] A porous viscous damper, characterized by: the damper includes cylinder, two end covers, piston placed in the cavity of cylinder and piston rod, the piston is composed of three sub-pistons, piston one, piston two and piston three, piston one and piston two are slidably sleeved on the piston rod, and piston three is fixedly connected with the piston rod. The piston with damping hole divides the cylinder into two chambers, and a damping hole extension pipe is arranged between the three sub-pistons, the damping hole extension pipe is composed of a corrugated pipe and a high-pressure oil pipe, and the two ends of the damping hole extension pipe are connected with the piston one and the piston two respectively to extend the length of the damping hole.

[0007] Further, the high-pressure oil pipe and the corrugated pipe are fixedly connected through the connecting piece to form a whole.

[0008] Further, the damping hole extension pipe is connected with the piston one and the piston two through the connecting piece.

[0009] Further, the damping hole extension pipe is divided into three sections, in sequence, a corrugated pipe, a high-pressure oil pipe and a corrugated pipe.

[0010] Further, the middle part of the damping hole extension pipe, i.e. the high-pressure oil pipe section, passes through the three centers of the piston and is fixedly connected with the piston.

[0011] Further, a limiting piece is arranged on each side of the sliding direction of the piston one and the piston two, the limiting piece is fixedly connected with the piston rod, and the limiting piece is used for limiting the displacement stroke of the piston one and the piston two, so as to avoid damage of the corrugated pipe.

[0012] Further, the cavity of the piston is partially filled with heat-absorbing material, and the heat-absorbing material wraps the piston rod and the high-pressure oil pipe.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The pore viscous damper is connected with the three sub-pistons in the form of the damping hole extension pipe, the length of the damping hole is effectively increased without increasing the piston material, and the damper can automatically adapt to the damping force in the form of the movable piston piece and the corrugated pipe at two ends, so that the damper is prevented from being damaged instantaneously under the condition that the external load is too large. BRIEF DESCRIPTION OF DRAWINGS

[0015] ATTACHED Figure 1 It is a sectional structure schematic view of the pore viscous damper of the utility model;

[0016] Wherein: 1 - first connecting head;2 - left sealing end cover;3 - piston rod;4 - limiting piece;5 - piston one;6 - piston two;7 - heat-absorbing material;8 - piston three;9 - cylinder;10 - right sealing end cover;11 - second connecting head;12 - corrugated pipe connecting piece;13 - corrugated pipe;14 - high-pressure oil pipe;15 - high-pressure oil pipe connecting piece;16 - first chamber;17 - second chamber; DETAILED DESCRIPTION

[0017] In order to make the purpose, the realization method and the advantages of the utility model more clear, the utility model will be further described below in combination with the drawings. Obviously, the described examples are only one form of the utility model, and do not represent all examples.

[0018] In the description of the utility model, it is necessary to understand that the orientation or position relation indicated by the terms "left", "right", "inner" and "outer" only bases on the orientation relation in the drawing, just for better describing the position relation between components, and is not indicated or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0019] As Figure 1 Indicated, the porous viscous damper includes cylinder 9, left sealing end cover 2 and right sealing end cover 10 installed at both ends of cylinder 9, piston rod 3 installed in cylinder 9 and passing through left sealing end cover 2 and right sealing end cover 10 respectively, first connecting head 1 fixedly connected with the right end of piston rod 3, left sealing end cover 11 arranged inside cylinder 4, second connecting head fixedly connected with the left end of cylinder, damping hole arranged on piston one 5 and piston two 6, damping hole extension pipe connected between the damping holes of piston one and piston three, damping hole extension pipe divided into three sections, in turn, corrugated pipe, high-pressure oil pipe and corrugated pipe, the middle part of damping hole extension pipe, i.e. high-pressure oil pipe section, passes through the center of piston three and is fixedly connected with piston three, corrugated pipe 12 is fixedly connected with piston one and piston two through corrugated pipe connecting piece 15. The cylinder is divided into first chamber 16 and second chamber 17 by the piston, the cylinder is filled with damping liquid, and the damping liquid flows from first chamber 16 to second chamber 17 through damping hole and damping hole extension pipe. The two sides of the cylinder are fixedly connected with first sealing end cover 3 and second sealing end cover 11 respectively; two, three pistons divide the cylinder into four closed spaces, the closed inner cavity formed by the three-piston-composed piston and the cylinder is partially filled with heat-absorbing material 7, the heat-absorbing material 7 is a material with small expandable coefficient and strong heat-absorbing capacity, which can absorb heat in the damping hole and damping hole extension pipe. Three pistons are concentrically connected with piston rod 3, piston one 5 and piston two 6 are slidingly connected with piston rod 3, and piston three 8 is fixedly connected with piston rod 3, such as fixedly connected through threads, limit pieces 4 are arranged in front of and behind the moving direction of piston one 5 and piston two 6, to limit the displacement stroke of corrugated pipe, and the limit pieces are fixedly connected with piston rod 3.

[0020] The first connecting head 1 can drive the piston rod to reciprocate left and right, and the piston rod can drive the piston three 8 and the high-pressure oil pipe to move synchronously when the piston rod moves, and the heat-absorbing material 7 moves synchronously with the piston 6, and when the damping force is too large, the compression piston one or the compression piston two is compressed, so that the corrugated pipe 12 is shortened, the length of the damping hole is dynamically adjusted, the effect of adjusting the damping force is achieved, and the damper is prevented from being damaged. When the external load is small, the running speed is slow, the corrugated pipe is not deformed, the length of the damping hole is constant, and the damping liquid flows from the left first chamber 16 into the right second chamber 17; if the external load is large, the running speed is fast, and the damping force is large, then the liquid pressure on both sides can drive the compression piston one 5 or the compression piston two 6 to compress the corrugated pipe, so that the increase range of the damping force is small, and the damper is not easy to be damaged.

[0021] The damping hole lengthening pipe is arranged, the length of the damping hole can be lengthened under the condition of saving the piston material, the energy consumption efficiency is increased, the combination of the corrugated pipe and the high-pressure oil pipe is used, the effect of dynamically adjusting the length of the damping hole is achieved, the damping hole can fully consume energy, and the damper is prevented from being damaged.

[0022] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A porated viscous damper, characterized by: The damper comprises a cylinder, sealing end covers and pistons at both ends of the cylinder, a piston rod installed in the cylinder and penetrating through the two sealing end covers and the pistons, the piston comprises three sub-pistons, namely a piston one, a piston two and a piston three, the piston separates the cylinder filled with damping liquid into a first chamber and a second chamber, a damping hole extension pipe is arranged between the piston one and the piston two, the piston three is arranged between the piston one and the piston two, the damping hole extension pipe penetrates through the piston three, and the piston three is fixedly connected with the damping hole extension pipe.

2. The orificed viscous damper of claim 1, wherein: The damping hole extension pipe is divided into three parts, the two ends are corrugated pipes, and the middle part is a high-pressure oil pipe.

3. The orificed viscous damper of claim 2, wherein: The corrugated pipes are fixedly connected with the piston one and the piston two through corrugated pipe connectors.

4. The orificed viscous damper of claim 3, wherein: The corrugated pipes are connected with the high-pressure oil pipe through high-pressure oil pipe connectors.

5. The orifice-type viscous damper of claim 4, wherein: Limiting pieces are arranged in front of and behind the moving direction of the piston one and the piston two.

6. The orificeed viscous damper of claim 5, wherein: The inner cavity of the piston is partially filled with heat-absorbing material.

7. The orifice-type viscous damper of claim 6, wherein: The piston one and the piston two are sleeved on the piston rod and are in sliding connection with the piston rod.

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