Damping device for building earthquake resistance

Abstract

The utility model discloses a damping device for building earthquake resistance, which comprises a main barrel body, an upper piston and a lower piston, the upper piston and the lower piston are both provided with a plurality of damping liquid holes, the lower piston is fixedly connected with an inner rod, and the upper piston is fixedly connected with a loop bar; an upper reset spring is arranged between the upper piston and the sealing end cover, and a lower reset spring is arranged between the lower piston and the main barrel body; a sealing end cover is fixed to the top of the main barrel body, a through hole matched with the sleeve rod is formed in the sealing end cover, and the main barrel body is filled with damping liquid. The damping liquid holes in the lower piston and the damping liquid holes in the upper piston are staggered by a certain angle, so that the size of the cross sectional area of the damping liquid holes which actually circulate is changed, and the damping force of the pistons is adjusted. Through cooperation of the worm and the turbine, the rotation angle of the upper piston can be conveniently adjusted, meanwhile, the position of the upper piston can be fixed through the self-locking function of the worm and the turbine, and the damping effect of the adjusted damper is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to damper technical field, concretely relates to a damping device for building anti-seismic. BACKGROUND

[0002] Viscous damper is a kind of oil cylinder structure filled with damping medium, the flow of internal medium is driven by the reciprocating movement of piston, and the damping effect is generated, and then the kinetic energy is converted into heat energy, and it is widely used in energy dissipation and shock absorption engineering.

[0003] Common viscous damper is mainly composed of piston, piston rod, cylinder and sealing element etc. The piston divides the cylinder into two chambers, and the two chambers are filled with viscous damping liquid as damping medium, and small holes are provided on the piston or gaps are left between the piston and the cylinder to make the damping medium pass through;When the piston and the cylinder produce relative movement, the piston will extrude the damping medium in the chamber on the side of its movement direction, and the extruded damping medium flows to the other chamber through the small holes on the piston or the gaps between the piston and the cylinder, and the mechanical energy transmitted by the structure is converted into heat energy in the process of high-speed flow of damping medium, so as to play the role of shock absorption, buffering and energy dissipation. The effect of energy dissipation of viscous damper is mainly determined by the length of main flow hole, the longer the length of main flow hole, the better the energy dissipation effect, but in actual situation, the length range left for piston is limited, so that the energy dissipation effect of existing viscous damper is limited, and the damping size of existing viscous damper cannot be adjusted, so it cannot better meet the actual demand. Therefore, it is necessary to put forward a new damping device for building anti-seismic with better damping effect and adjustable damping effect. SUMMARY

[0004] In view of the above shortcomings of the prior art, the utility model provides a damping device for building anti-seismic with better damping effect and adjustable damping effect.

[0005] In order to achieve the above-mentioned purposes, the utility model adopts the technical scheme that: a main barrel body is arranged, the upper piston and the lower piston are arranged in the main barrel body, a plurality of damping liquid holes are arranged on the upper piston and the lower piston correspondingly, the plurality of damping liquid holes are arranged uniformly, the inner rod is fixedly connected to the top of the lower piston, the sleeve rod is fixedly connected to the top of the upper piston, and the sleeve rod is nested outside the inner rod;The upper reset spring is arranged between the upper piston and the sealing end cover, and the lower reset spring is arranged between the lower piston and the main barrel body;The sealing end cover is fixed to the top of the main barrel body, the through hole matched with the sleeve rod is arranged on the sealing end cover, the sealing chamber is formed between the main barrel body and the sealing end cover, and the damping liquid is filled in the main barrel body.

[0006] Further, the top of the sleeve rod is connected with the damping adjusting mechanism, and the damping adjusting mechanism is used for adjusting the communication size of the damping liquid hole.

[0007] Further, the damping adjusting mechanism comprises a worm gear arranged at the top of the sleeve rod and a worm wheel matched with the worm gear, the worm gear is installed at the top of the inner rod through a worm gear support, and the worm gear support is fixedly connected with the inner rod.

[0008] Further, the top of the worm wheel is provided with a rotating identification arrow, and the rotating identification arrow points to the direction of increased resistance.

[0009] Further, one end of the worm gear is provided with a rotating knob, and the other end is provided with a limiting convex ring.

[0010] Further, the inner rod is provided with a limiting disc matched with the top of the sleeve rod.

[0011] Further, the limiting disc is provided with a main scale mark, and the top of the worm wheel is provided with two side marks matched with the main scale mark.

[0012] Further, the bottom of the main barrel body is provided with a lower mounting part.

[0013] Further, the top of the inner rod is provided with an upper mounting part.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model discloses a lower piston and an upper piston are arranged in the main barrel body, the lower piston is connected with the inner rod, the upper piston is connected with the sleeve rod, the lower piston and the upper piston are provided with corresponding a plurality of damping liquid holes, the damping liquid holes on the lower piston and the upper piston are staggered by a certain angle, thereby the size of the actual flow cross section of the damping liquid hole is changed, the adjustment of the piston damping force size is realized.

[0016] The specific principle of the utility model is as follows: the rotating knob is rotated, the rotating knob drives the worm gear to rotate, the worm gear drives the worm wheel to rotate, the worm wheel drives the sleeve rod to rotate around the inner rod, the sleeve rod drives the upper piston to rotate by a certain angle, when the upper piston is staggered by a certain angle with the lower piston, the actual flow cross section size of the damping liquid holes of the upper piston and the lower piston changes, the adjustment of the damper damping size is realized, thereby the damping force of the damper is adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown Figure 1 ;

[0018] Figure 2The overall structure diagram of the utility model Figure 2 ;

[0019] Figure 3 The cross section diagram of the utility model

[0020] Figure 4 The Figure 1 Enlarged view of A in the middle

[0021] The symbols of each component are as follows:

[0022] 1, main barrel body; 101, lower mounting portion; 2, sealing end cover; 3, lower piston; 4, upper piston; 5, inner rod; 501, upper mounting portion; 6, sleeve rod; 7, upper reset spring; 8, lower reset spring; 9, turbine; 10, worm; 11, worm support; 12, knob; 13, limit disc; 14, main scale mark; 15, side mark; 16, rotating mark arrow. DETAILED DESCRIPTION

[0023] The specific embodiment of the utility model is described below, so that the person skilled in the art can understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiment, and for the ordinary skilled person in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the appended claims, these changes are obvious, and all the utility model creations utilizing the concept of the utility model are within the scope of protection.

[0024] For example Figure 1 , 2As shown in Figure 3, the seismic damping device for buildings includes a main barrel 1. An upper piston 4 and a lower piston 3 are installed inside the main barrel 1. Several damping fluid holes are correspondingly provided on the upper piston 4 and the lower piston 3, and these holes are evenly distributed. An inner rod 5 is fixedly connected to the top of the lower piston 3, and a sleeve rod 6 is fixedly connected to the top of the upper piston 4, nested outside the inner rod 5. An upper return spring 7 is provided between the upper piston 4 and the sealing end cap 2, and a lower return spring 8 is provided between the lower piston 3 and the main barrel 1. The upper return spring 7 and the lower return spring 8 cooperate to reset the upper piston 4 and the lower piston 3. A sealing end cap 2 is fixed to the top of the main barrel 1. The sealing end cap 2 has a through hole that mates with the sleeve rod 6, and the sealing end cap 2 and the sleeve rod 6 are interference-fitted. Alternatively, an annular groove can be provided on the inner wall of the sealing end cap 2, and a rubber sealing ring can be installed in the annular groove to achieve a sliding sealing connection. A sealed chamber is formed between the main barrel 1 and the sealing end cap 2, and the main barrel 1 is filled with damping fluid. In this embodiment, the upper piston 4 and the lower piston 3 are preferably provided with eight damping fluid holes, which are evenly distributed and arranged around each other. The distance between the centers of adjacent damping fluid holes is equal to the diameter of the damping fluid hole. After the upper piston 4 and the lower piston 3 are offset by a certain angle, the damping fluid holes on the upper piston 4 and the lower piston 3 will be misaligned, which reduces the cross-sectional area of ​​the damping fluid holes that actually participate in the flow. Therefore, by adjusting the misalignment angle between the upper piston 4 and the lower piston 3, the cross-sectional area of ​​the damping fluid holes that actually participate in the flow can be adjusted, thereby adjusting the magnitude of the damper's resistance to meet the damping effect requirements of the damper under different conditions.

[0025] A damping adjustment mechanism is connected to the top of the sleeve rod 6. This mechanism is used to adjust the size of the damping fluid orifice. The damping adjustment mechanism includes a turbine 9 located at the top of the sleeve rod 6 and a worm gear 10 that cooperates with the turbine 9. The worm gear 10 is mounted on the top of the inner rod 5 via a worm gear bracket 11, which is fixedly connected to the inner rod 5. When the upper piston 4 is rotated to its correct position, the self-locking effect of the turbine 9 and the worm gear 10 locks the position of the upper piston 4, thereby adjusting the damping force of the damper.

[0026] like Figure 4 As shown, a rotating indicator arrow 16 is provided on the top of the turbine 9, pointing in the direction of increased resistance. Two circular protrusions of different sizes can also be provided on either side of the rotating indicator arrow 16. The larger circular protrusion represents a damping fluid orifice with a large flow cross-section, and the smaller circular protrusion represents a damping fluid orifice with a small flow cross-section. This allows operators to easily adjust the actual flow cross-section of the damping fluid orifice, thereby adjusting the damping effect of the damper.

[0027] A knob 12 is provided at one end of the worm gear 10, and a limit ring is provided at the other end. The knob 12 can be easily rotated to adjust the damping effect of the damper. The limit ring limits the worm gear 10 to prevent it from disengaging during rotation.

[0028] The inner rod 5 is provided with a limiting disc 13 matched with the top of the sleeve rod 6. The limiting disc 13 has two functions. One function is fixedly connected with the inner rod 5, which is used for limiting the movement of the top of the sleeve rod 6, so that the sleeve rod 6 can only rotate around the inner rod 5. The other function is to set a main scale mark 14, and the top of the turbine 9 is provided with two side marks 15 matched with the main scale mark 14. The damping effect of the damper is determined by the position of the main scale mark 14 between the two side marks 15. Further, a plurality of scale stops can be arranged on the top of the turbine 9 to facilitate the adjustment of the damping effect of the damper. This way makes the adjustment of the damper more intuitive and convenient. When the upper piston 4 and the lower piston 3 coincide with the maximum area of the damping liquid hole, the damping force of the damper is the minimum value. When the upper piston 4 and the lower piston 3 coincide with the minimum area of the damping liquid hole, the damping force of the damper is the maximum value. The minimum damping force and the maximum damping force correspond to the two side marks 15 respectively.

[0029] The bottom of the main barrel 1 is provided with a lower mounting portion 101, and the top of the inner rod 5 is provided with an upper mounting portion 501. The lower mounting portion 101 and the upper mounting portion 501 are both provided with mounting holes. Through the mounting holes arranged on the lower mounting portion 101 and the upper mounting portion 501, the damper can be conveniently installed at the desired position.

[0030] Working process and principle: when in use, the damper is installed at the desired position through the lower mounting portion 101 arranged at the bottom of the main barrel 1 and the upper mounting portion 501 arranged at the top of the inner rod 5. After the damper is installed in place, the damping effect of the damper is adjusted. Specifically, the knob 12 is rotated to drive the worm 10 to rotate, the worm 10 drives the turbine 9 to rotate, the turbine 9 drives the sleeve rod 6 to rotate around the inner rod 5, and the sleeve rod 6 drives the upper piston 4 to rotate by a certain angle. When the upper piston 4 and the lower piston 3 are offset by a certain angle, the actual flow cross-sectional area of the damping liquid holes of the upper piston 4 and the lower piston 3 changes, the size of the damping of the damper is adjusted, and thus the damping force of the damper is adjusted. According to the position of the main scale mark 14 between the two side marks 15 on the limiting disc 13, the size of the damping force of the damper can be intuitively adjusted. When the main scale mark 14 is rotated to the appropriate position, the self-locking action of the turbine 9 and the worm 10 is utilized to lock the rotating position of the upper piston 4, and the adjustment of the damping force of the damper is completed.

Claims

1. A damping device for use in earthquake resistant construction, characterized in that Including main bucket body (1), be provided with upper piston (4) and lower piston (3) in the main bucket body (1), the upper piston (4) and lower piston (3) are provided with several damping liquid holes on the corresponding, several damping liquid holes are evenly distributed, the lower piston (3) top fixedly connected with inner rod (5), the upper piston (4) top fixedly connected with sleeve rod (6), the sleeve rod (6) is nested in the outer portion of inner rod (5); The upper piston (4) and sealing end cover (2) between be provided with upper reset spring (7), the lower piston (3) and main bucket body (1) between be provided with lower reset spring (8); The main bucket body (1) top fixed sealing end cover (2), the sealing end cover (2) on be provided with with sleeve rod (6) cooperation through -hole, the main bucket body (1) and sealing end cover (2) between form sealed chamber, the main bucket body (1) is filled with damping liquid; The top of sleeve rod (6) is connected with damping adjustment mechanism, and the damping adjustment mechanism is used for adjusting the communication size of damping liquid hole.

2. The damping device for earthquake resistance of a building according to claim 1, wherein The damping adjustment mechanism includes turbine (9) arranged at the top of sleeve rod (6) and worm (10) cooperating with turbine (9), the worm (10) is installed at the top of inner rod (5) through worm support (11), and the worm support (11) is fixedly connected with inner rod (5).

3. The damping device for earthquake resistance of a building according to claim 2, wherein The top of turbine (9) is provided with rotating identification arrow (16), and the rotating identification arrow (16) points to the direction of increasing resistance.

4. The damping device for earthquake resistance of a building according to claim 2, wherein One end of worm (10) is provided with knob (12), and the other end is provided with limit convex ring.

5. The damping device for earthquake resistance of a building according to claim 2, wherein The inner rod (5) is provided with limit disc (13) cooperating with the top of sleeve rod (6).

6. The damping device for earthquake resistance of a building according to claim 5, wherein The limit disc (13) is provided with main scale mark (14), and the top of turbine (9) is provided with two edge side marks (15) cooperating with main scale mark (14).

7. The damping device for earthquake resistance of a building according to claim 1, wherein The bottom of main bucket body (1) is provided with lower mounting portion (101).

8. The damping device for earthquake resistance of a building according to claim 1, wherein The top of inner rod (5) is provided with upper mounting portion (501).

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