Variable-index protection damper

Abstract

The utility model discloses a viscous damper, belongs to the technical field of dampers, and particularly relates to a variable index protection damper which comprises an outer cylinder, an overflow valve assembly, a piston, a connecting lug seat and a damping medium. The overflow valve assembly is installed in the piston, the piston is installed in the outer cylinder, the number of the connecting lugs is two, the connecting lugs are fixedly connected with the two ends of the outer cylinder respectively, and the damping medium is filled in the outer cylinder; the overflow valve assembly is composed of a sealing gasket, a pressing spring, a locking nut and a pressing steel ball. The overflow valve assembly starts to take effect at a specific speed through a specific spring structure, compared with a previous structure, the production cost and the construction cost are greatly reduced, a so-called protection type damper cannot be effectively protected on site, meanwhile, the index of the damper is a value before the valve is opened, and the safety of the valve is improved. When the set speed is reached, the index of the damper begins to change, and the variable index is achieved.

Description

Technical Field

[0001] The utility model discloses a viscous damper, belonging to the technical field of dampers, and specifically relates to a variable-index protection damper. Background Technique

[0002] At present, the application of viscous dampers in engineering has different requirements for damping force under different usage conditions. A viscous damper is a type of damper, mainly composed of a piston, a cylinder body, end covers, a damping medium, and a connecting body. During the reciprocating movement of the piston in the cylinder body, the damping medium flows in two separated cavities, and the damping medium generates intense friction with the piston. When passing through the piston holes or gaps, damping force is generated. The seismic energy is dissipated as heat through the reciprocating movement of the piston in the damper through the damping medium, gradually reducing the movement speed of the damper piston to achieve the purpose of damping energy dissipation.

[0003] In the prior art, in some buildings at high speeds, the output force cannot be too large. Too large a damping force will cause the failure of our damper and the connecting components, resulting in greater damage to the entire building. In severe cases, it will cause problems of life and property losses. Therefore, it is urgent to develop a damper with a variable-index protection function that can meet such application conditions. Content of the Utility Model

[0004] Purpose of the utility model: To provide a variable-index protection damper to solve the above-mentioned problems.

[0005] Technical solution: A variable-index protection damper includes: an outer cylinder, an overcurrent valve assembly, a piston, connecting lugs, and a damping medium;

[0006] The overcurrent valve assembly is installed in the piston, the piston is installed in the outer cylinder, there are two connecting lugs and they are respectively fixedly connected to both ends of the outer cylinder, and the damping medium is filled in the outer cylinder;

[0007] The overcurrent valve assembly consists of a sealing gasket, a compression spring, a locking nut, and a compression steel ball.

[0008] In a further embodiment, the piston is provided with a valve installation hole and an oil passage hole, the overcurrent valve assembly is installed in the valve installation hole, and the oil passage hole is communicated with the valve installation hole.

[0009] In a further embodiment, a sealing ring is provided between the inner wall of the outer cylinder and the piston.

[0010] In a further embodiment, the sealing gasket is installed at one end of the valve mounting hole, the lock nut is installed at the other end of the valve mounting hole, the pressing steel ball and the pressing spring are located in the valve mounting hole, the pressing steel ball is located between the sealing gasket and the pressing spring, and the pressing spring is located between the pressing steel ball and the lock nut.

[0011] In a further embodiment, there are two sets of the valve mounting holes and the oil passing holes, and they are arranged in a parallel and reverse manner.

[0012] In a further embodiment, two damping holes are further provided on the piston, and the damping holes are arranged in a circumferential cross manner with the two sets of valve mounting holes and oil passing holes.

[0013] The utility model has the following beneficial effects:

[0014] 1. The flow control valve assembly of the utility model starts to take effect at a specific speed through a specific spring structure.

[0015] 2. Compared with the previous structure, the utility model greatly reduces the production cost and construction cost. Among the so-called protective dampers on the site, none can provide effective protection.

[0016] 3. For the damper of the utility model, the index of the damper is a value before the valve is opened. When the set speed is reached, the damper index starts to change, realizing a variable index.

[0017] 4. The stable controllability of the output force increase of the damper of the utility model under ultra-rare earthquakes, that is, it should not exceed 10% of the designed damping force of the damper, so as to effectively protect the load-bearing safety of the connecting parts, embedded parts and adjacent sub-structures matching with the damper.

[0018] 5. The true stability and reliability of the mechanical properties of the damper product of the utility model after experiencing rare earthquakes (Vmax working condition) and ultra-rare earthquakes (1.5*Vmax working condition). Description of the Drawings

[0019] Figure 1 is a schematic diagram of the utility model.

[0020] Figure 2 is a partial cross-sectional view of the utility model.

[0021] Figure 3 is a schematic diagram of the valve mounting hole and the damping hole of the utility model.

[0022] Figure 4 is a mechanical property test diagram of the utility model.

[0023] Reference numerals: outer cylinder 1, flow-through valve assembly 2, piston 3, connecting ear seat 4, damping medium 5, sealing gasket 6, compression spring 7, locking nut 8, compression steel ball 9, valve mounting hole 10, oil passage hole 11, sealing ring 12, damping hole 13. Detailed implementation mode

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the technical features involved in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] A variable exponent protection damper includes: an outer cylinder 1, a flow-through valve assembly 2, a piston 3, a connecting ear seat 4, and a damping medium 5.

[0028] In one embodiment, as Figures 1 to 3 shown, the flow-through valve assembly 2 is installed in the piston 3, the piston 3 is installed in the outer cylinder 1, two connecting ear seats 4 are provided and are respectively fixedly connected to both ends of the outer cylinder 1, and the damping medium 5 is filled in the outer cylinder 1;

[0029] The flow-through valve assembly 2 is composed of a sealing gasket 6, a compression spring 7, a locking nut 8, and a compression steel ball 9.

[0030] In one embodiment, as Figures 1 to 3 shown, a valve mounting hole 10 and an oil passage hole 11 are provided on the piston 3, the flow control valve assembly 2 is installed in the valve mounting hole 10, and the oil passage hole 11 communicates with the valve mounting hole 10.

[0031] In one embodiment, as Figures 1 to 3 shown, a sealing ring 12 is provided between the inner wall of the outer cylinder 1 and the piston 3.

[0032] In one embodiment, as Figures 1 to 3 shown, the sealing gasket 6 is installed at one end of the valve mounting hole 10, the locking nut 8 is installed at the other end of the valve mounting hole 10, the pressing steel balls 9 and the pressing spring 7 are located in the valve mounting hole 10, the pressing steel balls 9 are located between the sealing gasket 6 and the pressing spring 7, and the pressing spring 7 is located between the pressing steel balls 9 and the locking nut 8.

[0033] In one embodiment, as Figures 1 to 3 shown, two damping holes 13 are further provided on the piston 3, and the damping holes 13 are arranged in a circumferential cross manner with two groups of valve mounting holes 10 and oil passage holes 11.

[0034] In one embodiment, as Figures 1 to 3 shown, two damping holes 13 are further provided on the piston 3, and the damping holes 13 are arranged in a circumferential cross manner with two groups of valve mounting holes 10 and oil passage holes 11.

[0035] Working principle: As Figures 1 to 4 shown, when the damper operates normally, the pressing spring 7 cooperates with the pressing steel balls 9 to press normally. At this time, the valve mounting hole 10 is in a closed state. At this time, the damper generates a damping force through the damping holes 13, so that the damper plays a normal energy dissipation role. When the speed of the damper increases and exceeds the maximum speed, the pressing spring 7 in the flow control valve assembly 2 is compressed, the oil passage hole 11 is opened, and the entire flow passage is opened. At this time, no matter how the speed increases, energy can be supplemented and the damping force can be increased, thereby protecting the damper body and the structure of the house.

[0036] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A variable exponential protection damper, characterized in that: The damper comprises: an outer cylinder, a flow valve assembly, a piston, a connecting ear seat and a damping medium; The flow valve assembly is installed in the piston, the piston is installed in the outer tube, two connecting ear seats are provided and are respectively fixedly connected to the two ends of the outer tube, and the damping medium is filled in the outer tube; The flow valve assembly is composed of a sealing gasket, a compression spring, a locking nut and a compression steel ball.

2. A variable exponential protection damper according to claim 1, characterized in that: The piston is provided with a valve mounting hole and an oil passing hole, the flow valve assembly is installed in the valve mounting hole, and the oil passing hole is communicated with the valve mounting hole.

3. A variable exponential protection damper according to claim 1, characterized in that: A sealing ring is arranged between the inner wall of the outer cylinder and the piston.

4. A variable exponential protection damper according to claim 2, characterized in that: The sealing gasket is installed at one end of the valve mounting hole, the locking nut is installed at the other end of the valve mounting hole, the clamping steel ball and the clamping spring are located in the valve mounting hole, the clamping steel ball is located between the sealing gasket and the clamping spring, and the clamping spring is located between the clamping steel ball and the locking nut.

5. A variable exponential protection damper according to claim 2, characterized in that: The valve installation holes and the oil holes are provided in two groups and are arranged in parallel and inversely.

6. A variable exponential protection damper according to claim 2, characterized in that: The piston is also provided with two damping holes, which are arranged in a circumferentially cross manner with the two groups of valve mounting holes and the oil passage holes.

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