Assembly type damping system capable of improving efficiency through cycle index of damper

Abstract

A damper cycle index synergistic assembly type damping system comprises a damper cycle index synergistic mechanism transversely arranged on the upper portion of a middle beam and interlayer displacement transmission mechanisms connected with the damper cycle index synergistic mechanism and arranged at beam column joints of four corners. When the frame deforms laterally, the steel strand drives the bull gear transmission shaft to rotate, the bull gear and the bull gear transmission shaft have the same rotation angle, the diameter of the bull gear is far larger than that of the bull gear transmission shaft, and structural interlayer displacement is amplified; then the large gear drives the small gear and the oval track disc to rotate, the oval track disc rotates to drive the steel column on the connecting rod to horizontally reciprocate, the oval track rotates by one circle, and the damper reciprocates by two circles; linear displacement of the structure is converted into rotating displacement through the steel strands, the steel strands are matched with components such as gears, multiple times of circulating reciprocating work of the damper can be achieved under the condition that the structure reciprocates by one circle, energy consumption of the damper is increased, meanwhile, displacement of the damper is limited, and damage to the damper due to too large displacement is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of energy dissipation and shock absorption of building structures, and in particular relates to an assembled shock absorption system with increased cycle times of a damper. Background Art

[0002] The disastrous consequences of earthquakes on buildings are very serious. With the continuous acceleration of urbanization, the seismic measures of some old buildings are far from the current specifications. In addition, the functions of some buildings have changed, and the original design seismic resistance level cannot meet the current use requirements. More and more buildings need seismic reinforcement. For the seismic reinforcement of existing building structures, the traditional reinforcement method is to increase the strength and stiffness of the structure itself and improve the bearing capacity of the building structure components to resist earthquakes. The shock control technology adjusts the structural force mode to reduce the damage to the structure caused by earthquakes and ensure the safety of the building structure. Its advantages are good economy, can reduce the reinforcement of the structure itself, and effectively improve the overall seismic performance of the building structure. Among the seismic reinforcement methods based on the structural system, adding shear walls and steel supports are the most commonly used reinforcement methods, which have been widely used in actual engineering. Even so, there are still a series of problems: the current method of adding horizontal dampers to shear walls requires high stiffness of shear walls. When the structural deformation is small, the damper displacement is small and the shock absorption effect is poor. When the structural displacement is too large, due to the limited stroke of ordinary viscous dampers, large-stroke viscous dampers need to be specially made, and good shock absorption effect cannot be achieved. Therefore, it is necessary to increase the structural displacement input through some devices, and make the viscous damper reciprocate multiple times within the stroke range, improve the working efficiency of the viscous damper, and give full play to its energy-consuming shock absorption effect.

[0003] The patent application document with publication number CN209637007U discloses a viscous damper transmission device and viscous damping system using a rack-pinion, which transmits structural displacement through a cross diagonal brace, and amplifies the structural displacement through devices such as gears and connecting rods. However, since the cantilever of the cross diagonal brace is too long when the structural span is large, in order to ensure the stability of the shock absorbing system, the diagonal brace requires a large stiffness, thereby increasing the cross section of the rod, thereby increasing the cost of the device and the difficulty of installation. At the same time, the damper only produces one reciprocating motion when the pinion rotates one circle, and the energy consumption of the damper is low.

[0004] The patent application document with publication number CN 217557875 U discloses a viscous damping device that uses a lever to amplify displacement and velocity, and realizes a viscous damping device that amplifies displacement and velocity through the support and lever principle. However, due to the limited stroke of commonly used viscous dampers, if the displacement between structural layers is amplified and directly input into the viscous damper, it will often cause the input displacement to exceed the stroke of the viscous damper under a large earthquake, thereby damaging the damper and causing it to lose its shock absorption ability. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide an assembled shock-absorbing system with enhanced damper cycle times, which converts the linear displacement of the structure into rotational displacement through steel strands, and cooperates with gears and other components to realize multiple cycles of reciprocating work of the damper when the structure reciprocates for one circle, thereby increasing the energy consumption of the damper and limiting the displacement of the damper, avoiding damage to the damper due to excessive displacement.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A damper cycle number enhancement assembled shock absorption system comprises a damper cycle number enhancement mechanism arranged transversely on the upper part of the middle beam and an inter-layer displacement transmission mechanism connected thereto and arranged at the beam-column nodes at the four corners; wherein:

[0008] The damper cycle times enhancement mechanism is used to amplify the interlayer displacement of the structure transmitted by the interlayer displacement transmission mechanism, and convert the amplified interlayer displacement of the structure into a high-frequency and low-amplitude linear displacement, so as to realize multiple cyclic reciprocating motions of the damper;

[0009] The inter-layer displacement transmission mechanism is composed of four steel strands and is used to transmit the inter-layer displacement to the damper cycle enhancement mechanism.

[0010] The damper cycle times enhancing mechanism comprises gear boxes 4 arranged at both ends of the upper part of the middle beam, and a damper 5 is arranged between the two gear boxes 4 .

[0011] The circular hole 4 - 4 protruding from the inner side of the gear box 4 is connected to both ends of the damper 5 .

[0012] The gear box 4 is equipped with a large gear 2 and a small gear 6 that mesh with each other. The small gear 6 is arranged close to the damper 5. The large gear 2 is fixed to the gear box 4 through the large gear transmission shaft 3, and the small gear 6 is fixed to the gear box 4 through the small gear transmission shaft 7. An elliptical track disk 8 is concentrically installed on one side of the small gear 6. A pin shaft 11 is embedded in the elliptical track on the elliptical track disk 8. The pin shaft 11 is connected to one end of the connecting rod 9 close to the small gear 6, and the other end of the connecting rod 9 is fixed to the two ends of the damper 5 respectively.

[0013] The inter-layer displacement transmission mechanism includes four steel strands 1, one end of each steel strand 1 is fixed to the beam-column nodes at the four corners, and the other end of each steel strand 1 is wound around and fixed on the large gear transmission shaft 3 at the diagonal of the beam-column node.

[0014] The large gear transmission shaft 3 is provided with steel strand fixing bolts 10 , and the ends of the four steel strands are fixed to the steel strand fixing bolts 10 on the large gear transmission shaft 3 .

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention transmits the displacement between structural layers through the steel strand 1, wherein one end of the steel strand 1 is respectively fixed at the beam-column nodes located at the four corners. Compared with the previous steel support displacement transmission method, the steel strand has a simple structure, occupies less space, and is convenient for construction.

[0017] 2. The present invention amplifies the displacement between structural layers by the diameter ratio difference between the large gear transmission shaft 3 and the large gear 2. When the steel strand 1 drives the large gear transmission shaft 3 to rotate, the large gear 2 and the large gear transmission shaft 3 rotate at the same angle, and the linear displacement of the large gear transmission shaft 3 is larger. The smaller the diameter of the large gear transmission shaft 3 and the larger the diameter of the large gear 2, the greater the magnification of the displacement between structural layers, thereby increasing the energy consumption of the damper 5.

[0018] 3. The present invention makes the outer edges of the large gear 2 and the small gear 6 have equal linear displacements by meshing with each other. By reducing the diameter of the small gear 6, the number of rotations of the small gear 6 can be increased, so that the small gear 6 drives the elliptical track disk 8, increasing the number of rotations of the elliptical track disk 8.

[0019] 4. The present invention limits the stroke of the damper 5 by means of the elliptical track disk 8 fixed on the pinion 6, increases the number of reciprocating cycles of the damper 5, and prevents the displacement from exceeding the stroke of the damper 5 after being amplified.

[0020] 5. The present invention limits the pin shaft 11 on the connecting rod 9 to move in the elliptical orbit on the elliptical orbit disk 8. When the elliptical orbit disk 8 rotates one circle, the connecting rod 9 drives the damper 5 to generate two reciprocating motions, thereby increasing the number of cycles of the damper 5.

[0021] In summary, the present invention transmits displacement through steel strands, amplifies the displacement of the gear set, and limits the stroke of the damper 5 by the elliptical track plate 8, thereby increasing the number of reciprocating cycle actuations of the damper 5. It has the advantages of simple structure, displacement amplification, and realizing one reciprocating motion of the frame while the damper performs work in multiple cycles, thereby increasing the energy consumption of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a top view of the gear box 4 of the present invention.

[0024] Figure 3 It is a front view of the internal structure of the gear box 4 of the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the elliptical track disk 8 and the pin shaft 11 of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the damper 5 of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the gear box 4 of the present invention.

[0028] 1 is a steel strand; 1-1 is the first steel strand; 1-2 is the second steel strand; 1-3 is the third steel strand; 1-4 is the fourth steel strand; 2 is a large gear; 3 is a large gear transmission shaft; 4 is a gear box; 4-1 is a housing; 4-2 is a mounting hole for the large gear transmission shaft; 4-3 is a mounting hole for the small gear transmission shaft; 4-4 is a circular hole; 5 is a damper; 5-1 is a damper body; 5-2 is a damper extension rod; 6 is a small gear; 7 is a small gear transmission shaft; 8 is an elliptical track plate; 9 is a connecting rod; 10 is a steel strand fixing bolt; 11 is a pinion. DETAILED DESCRIPTION

[0029] The technical solution adopted by the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The invention provides a damper cycle number enhancement assembled shock absorbing system, which consists of four steel strands, two large gears, two large gear shafts, two small gears, two small gear shafts, two gear boxes, two connecting rods and a damper.

[0031] like Figure 1 As shown, a damper cycle number enhancement assembled shock absorbing system comprises a damper cycle number enhancement mechanism arranged transversely on the upper part of the middle beam and an interlayer displacement transmission mechanism connected thereto and arranged at the beam-column nodes at the four corners, wherein the damper cycle number enhancement mechanism is used to amplify the structural interlayer displacement transmitted by the interlayer displacement transmission mechanism, and convert the amplified structural interlayer displacement into a high-frequency and low-amplitude linear displacement, so as to realize multiple cyclic reciprocating motions of the damper;

[0032] The damper cycle times enhancement mechanism comprises a gear box 4 arranged at both ends of the upper part of the middle beam. Figure 6 A damper 5 is disposed between the two gear boxes 4, and the circular hole protruding from the inner side of the gear box 4 is connected to the two ends of the damper 5. Figure 5 .

[0033] like Figure 2-Figure 4As shown, the gear box 4 is installed with a large gear 2 and a small gear 6 that mesh with each other. The small gear 6 is arranged close to the damper 5. The large gear 2 is fixed to the gear box 4 through the large gear transmission shaft 3, and the small gear 6 is fixed to the gear box 4 through the small gear transmission shaft 7. An elliptical track disk 8 is concentrically installed on one side of the small gear 6. The two ends of the damper 5 are respectively fixed to one end of the connecting rod 9. A pin shaft 11 is installed on the other end of the connecting rod 9 close to the pinion 6, and the pin shaft 11 is embedded in the elliptical track on the elliptical track disk 8.

[0034] One side surface of the elliptical track disk 8 is fixed to the pinion 6 and is concentric with the pinion 6. The other side surface of the elliptical track disk 8 is provided with an elliptical track, and the major axis and the minor axis of the elliptical track are at different distances from the center of the elliptical track disk 8.

[0035] The inter-layer displacement transmission mechanism is composed of four steel strands and is used to transmit the inter-layer displacement to the damper cycle enhancement mechanism.

[0036] The inter-layer displacement transmission mechanism includes four steel strands 1, one end of each steel strand 1 is fixed to the beam-column nodes at the four corners, and the other end of each steel strand 1 is wound around and fixed on the large gear transmission shaft 3 at the diagonal of the beam-column node.

[0037] The large gear transmission shaft 3 is provided with steel strand fixing bolts 10 , and the ends of the four steel strands are fixed to the steel strand fixing bolts 10 on the large gear transmission shaft 3 .

[0038] One end of the four steel strands 1 is fixed at the beam-column node, and the other end is wound around the large gear transmission shaft 3 and fixed to the steel strand fixing bolt 10 on the large gear transmission shaft 3; the large gear 2 is fixed to the gear box 4 through the large gear transmission shaft 3 to amplify the displacement. When the structure is deformed, the steel strand drives the large gear rotation shaft 3 to rotate and input displacement; the small gear 6 is fixed to the gear box 4 through the small gear transmission shaft 7, and the large gear 2 and the small gear 6 are meshed with each other to transmit dynamic loads; the elliptical track plate 8 is concentric with the small gear 6 and is fixed to the small gear 6; one end of the connecting rod 9 is fixed to the damper 5 The gear box 4 limits the remaining displacement of the damper 5, and only horizontal movement occurs along the arrangement direction of the damper 5. A pin 11 is provided at the other end of the connecting rod 9. The pin 11 is embedded in the elliptical track on the elliptical track disk 8. When the pinion 6 rotates, it drives the elliptical track disk 8 to rotate. At this time, since the connecting rod 9 only moves horizontally along the arrangement direction of the damper 5, the pin 11 fixed on the connecting rod 9 moves horizontally along the arrangement direction of the damper 5 driven by the elliptical track. The movement distance difference is generated by the difference between the major axis and the minor axis of the elliptical track, so that the connecting rod 9 drives the damper 5 to produce horizontal movement and generate damping force.

[0039] like Figure 5As shown, the damper 5 is a viscous damper, and the size can be selected according to the building characteristics and earthquake resistance requirements; the damper 5 includes a damper body 5-1, and both ends of the damper body 5-1 are fixedly connected with damper extension rods 5-2, one end of the two damper extension rods 5-2 is respectively connected to the damper body 5-1, and the other end of the damper extension rod 5-2 is respectively connected to one end of the connecting rod 9.

[0040] like Figure 6 As shown, the gear box 4 includes a shell 4-1, and a pair of large gear transmission shaft mounting holes 4-2 and a pair of small gear transmission shaft mounting holes 4-3 are symmetrically opened on both sides of the shell 4-1. The large gear transmission shaft mounting hole 4-2 is installed in the large gear transmission shaft mounting hole 4-2, and the small gear transmission shaft 7 is installed in the small gear transmission shaft mounting hole 4-3. A protruding circular channel 4-4 is provided at one end of the gear box 4 for constraining the damper extension rod 5-2. The damper extension rod 5-2 passes through the circular channel 4-4, so that the damper extension rod 5-2 can only generate horizontal movement in the circular channel 4-4, thereby driving the damper body 5-1 to generate damping force.

[0041] The working principle of the present invention is:

[0042] like Figure 1 As shown, after the system is installed, uniform prestress is applied to the steel strands to eliminate the gaps between the components. When the structure is subjected to external loads, the frame deforms laterally, and the steel strands drive the large gear transmission shaft 3 to rotate (for example: the frame deforms to the right to a certain extent, at which time the first steel strand 1-1 and the third steel strand 1-3 are pulled, and the second steel strand 1-2 and the fourth steel strand 1-4 are relaxed. Since the steel strands are pre-wound on the large gear transmission shaft 3, the first steel strand 1-1 and the third steel strand 1-3 are pulled and drive the large gear transmission shaft 3 to rotate, and at the same time, the relaxed second steel strand 1-2 and the fourth steel strand 1-4 are wound back around the large gear transmission shaft 3, and the same is true for the reverse movement). Since the large gear 2 is fixedly connected to the large gear transmission shaft 3, the large gear 2 and the large gear transmission shaft 3 have the same rotation angle, but the diameter of the large gear 2 is much larger than that of the large gear transmission shaft 3, which amplifies the displacement between the structural layers. Then the large gear 2 drives the small gear 6 and the elliptical track plate 8 to rotate. Since the connecting rod 9 only moves horizontally, the rotation of the elliptical track plate 8 drives the steel column on the connecting rod 9 to reciprocate horizontally. The elliptical track rotates one circle, and the damper 5 reciprocates two circles. Since the device is arranged horizontally symmetrically, in order to prevent the connecting rods 9 on both sides from moving in the process of power transmission, the long axis of the elliptical track plate 8 needs to be arranged horizontally at the same time in the initial state, and the damper 5 is in a fully compressed state at this time; or the long axis of the elliptical track plate 8 is lowered in the initial state and arranged vertically at the same time, and the damper is in a fully stretched state at this time.

[0043] Displacement and damper cycle amplification efficiency: After the structure is deformed, the displacement of the steel strand input is fixed. The displacement and damper amplification efficiency of the device are mainly determined by the large gear transmission shaft diameter, large gear diameter, small gear diameter, elliptical aisle major axis and minor axis parameters. Assuming that the frame inter-layer displacement is μ, the layer height is h, the span is l, and the large gear power transmission shaft diameter is d 0 , diameter of large gear d 1 , pinion diameter d 2 , the major axis a of the elliptical orbit, the minor axis b of the elliptical orbit (the lengths of the major and minor axes of the elliptical orbit are determined by the damper stroke. Assuming the damper range is c, then c = ab), the calculation formulas for the device displacement amplification efficiency (f) and the damper period amplification efficiency (t) are as follows:

[0044]

[0045] Where: s is the device displacement input value.

[0046] Case analysis: Assume that the floor height is 3000, the span is 5000, the diameter of the large gear power transmission shaft is 80, the large gear diameter is 300, the small gear diameter is 100, the damper range is 60, the major axis of the elliptical track is 120, and the minor axis of the elliptical track is 60. When the structure has an inter-story displacement of 0.01h, the displacement amplification efficiency is 2.5, and the damper cycle amplification efficiency is 2.5. When the structure has an inter-story displacement of 0.02h, the displacement amplification efficiency is 2.5, and the damper cycle amplification efficiency is 5.

[0047] The present invention has a displacement amplification effect. Under the condition of the same energy consumption, the tonnage of the damper can be reduced by adopting the present invention. At the same time, the stroke of the damper is limited, so that the damper can perform multiple reciprocating movements under the action of external loads such as earthquakes, thereby preventing the deformation amount from exceeding the damper stroke when the structure is deformed.

Claims

1. A damper cycle efficiency-enhancing assembled shock absorption system, characterized in that: It includes a damper cycle enhancement mechanism arranged transversely on the upper part of the middle beam and an inter-story displacement transmission mechanism connected thereto and arranged at the beam-column nodes at the four corners; wherein: The damper cycle times enhancement mechanism is used to amplify the inter-layer displacement of the structure transmitted by the inter-layer displacement transmission mechanism, and convert the amplified inter-layer displacement of the structure into high-frequency and low-amplitude linear displacement, thereby realizing multiple cyclic reciprocating motions of the damper; The inter-layer displacement transmission mechanism consists of four steel strands and is used to transmit the inter-layer displacement to the damper cycle enhancement mechanism.

2. The damper cycle efficiency-enhancing assembled shock absorption system according to claim 1, characterized in that: The damper cycle times enhancement mechanism comprises gear boxes (4) arranged at both ends of the upper portion of the middle beam, and a damper (5) is provided between the two gear boxes (4).

3. The damper cycle efficiency-enhancing assembled shock absorption system according to claim 2, characterized in that: The circular hole (4-4) protruding from the inner side of the gear box (4) is connected to both ends of the damper (5).

4. A damper cycle efficiency-enhancing assembled shock absorption system according to claim 2 or 3, characterized in that: A large gear (2) and a small gear (6) meshing with each other are installed in the gear box (4); the small gear (6) is arranged near the damper (5); the large gear (2) is fixed to the gear box (4) via a large gear transmission shaft (3); the small gear (6) is fixed to the gear box (4) via a small gear transmission shaft (7); an elliptical track disk (8) is concentrically installed on one side of the small gear (6); a pin (11) is embedded in the elliptical track on the elliptical track disk (8); the pin (11) is connected to one end of a connecting rod (9) near the small gear (6); and the other end of the connecting rod (9) is fixed to both ends of the damper (5) respectively.

5. The damper cycle efficiency-enhancing assembled shock absorption system according to claim 1, characterized in that: The inter-layer displacement transmission mechanism comprises four steel strands (1), one end of each steel strand (1) is fixed to a beam-column node located at four corners, and the other end of each steel strand (1) is wound around and fixed to a large gear transmission shaft (3) located diagonally opposite to the beam-column node to which it is fixed.

6. The damper cycle efficiency-enhancing assembled shock absorption system according to claim 5, characterized in that: The large gear transmission shaft (3) is provided with a steel strand fixing bolt (10), and the ends of the four steel strands are all fixed on the steel strand fixing bolt (10) on the large gear transmission shaft (3).

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