Rigidity and inerter dual nonlinear anti-impact device driven by lattice mechanism

Abstract

The invention discloses a rigidity and inerter dual nonlinear anti-impact device driven by a lattice mechanism. The device comprises a connecting plate, a limb connecting rod, a spring, a spring connecting part, a spring guide rod, a bolt, a rack, a gear, a flywheel, a supporting back plate and a connecting rod limb bolt. The connecting plates are connected with the limb connecting rods through bolts, the limb connecting rods are connected with the spring connecting parts through bolts, the spring guide rods are fixed to the spring connecting parts, the racks are connected with the limb connecting rods through connecting rod limb bolts and provide support for gear movement, and the supporting back plate is fixed to the connecting plates. A rotatable flywheel is fixed to the supporting back plate and connected with a gear. Dual adjustment can be achieved according to the rigidity and inertia characteristics of the to-be-protected structure, flexible and efficient impact resistance is achieved, the structure force transmission path is simple and clear, the machining cost is low, and practicability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural reinforcement and protection, and particularly relates to a dual nonlinear anti-impact device of stiffness and inertia driven by a lattice mechanism, which is suitable for the anti-impact protection of existing structures, and is particularly suitable for the protection of bridge structures from the impact of vehicles and ships. Background Art

[0002] During its service life, bridge structures not only have to bear normal use loads, but may also be subjected to impact loads from vehicles, ships, etc. The load conditions are complex, and the adaptability of anti-impact protection equipment is required to be high. Protecting the safety of the structure by adjusting the dynamic characteristics of the structure to be protected is an important protection method, which is usually carried out by stiffness adjustment. Inertia capacity technology provides a method of using inertia to adjust the dynamic characteristics of the structure. Nonlinear inertia can generate nonlinear inertial force related to relative acceleration, which solves the problem that it was difficult to generate nonlinear inertial force using mass elements related to absolute acceleration in the past. At the same time, unlike the constant apparent mass generated by the classical linear inertia, the nonlinear inertia has a variable apparent mass characteristic, which can achieve the effect of wide-band adaptive control. However, the existing protection device can only adjust the stiffness or inertia of the structure to be protected separately, and cannot achieve dual adjustment of the stiffness and inertia characteristics of the structure to be protected, and has poor adaptability in actual engineering. Therefore, it is necessary to propose a flexible and efficient high-performance and highly adaptable anti-impact device that can achieve dual adjustment of the stiffness and inertia of the structure to be protected. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism, comprising a connecting plate, a connecting rod with limbs, a latch, a flywheel, a supporting back plate, a connecting rod split-limb latch, a translation spring group and a gear transmission group; the connecting plate comprises a first connecting plate and a second connecting plate; the translation spring group comprises a spring, a spring connecting component and a spring guide rod, and the gear transmission group comprises a rack and a gear;

[0006] The limb-belt connecting rod comprises a first limb-belt connecting rod and a second limb-belt connecting rod, one end of the first limb-belt connecting rod and one end of the second limb-belt connecting rod are connected together with a spring connecting component through a latch, the other end of the first limb-belt connecting rod is movably connected with the first connecting plate through a latch, and the other end of the second limb-belt connecting rod is movably connected with the second connecting plate through a latch; the number of the first limb-belt connecting rod and the second limb-belt connecting rod is 4 respectively, and they are evenly connected around the first connecting plate and the second connecting plate respectively; the two ends of the spring and the spring guide rod are fixed to the spring connecting component; the rack is connected to the limb-belt connecting rod through a connecting rod split limb latch, the rack is meshed with the gear and provides support for the gear movement; the gear is fixedly connected to the flywheel, the flywheel is fixedly connected to the support back plate, and the support back plate is fixed to the connecting plate.

[0007] Furthermore, the first connecting plate and the second connecting plate can generate relative vertical movement.

[0008] Furthermore, the relative vertical movement between the first connecting plate and the second connecting plate drives the limb connecting rod to rotate, and the rotation of the limb connecting rod drives the spring and the gear transmission group to produce horizontal deformation, and drives the flywheel to rotate to produce an inertia effect.

[0009] Furthermore, the latch includes an upper latch connecting the first limb link and the first connecting plate, a middle latch connecting the limb link and the spring connecting component, and a lower latch connecting the second limb link and the second connecting plate.

[0010] Furthermore, the racks, gears and flywheels are symmetrically arranged with the spring guide rod as the symmetry axis, the number of racks is 4, the number of gears is 2, and the number of flywheels is 2.

[0011] Furthermore, the horizontal movement of the rack can drive the gear to rotate, and the flywheel rotates along with the gear.

[0012] Furthermore, the limb-belt connecting rod drives the translation spring group to move horizontally through the latch pin, and the limb-belt connecting rod drives the gear transmission group to move horizontally through the connecting rod split limb latch pin.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention drives the connected limb connecting rod to rotate through the relative vertical movement between the first and second connecting plates. The rotation of the limb connecting rod drives the horizontally arranged translation spring group and the gear transmission group to deform horizontally. The gear transmission group drives the flywheel to rotate to produce an inertia effect. Since the vertical deformation between the first and second connecting plates and the deformation relationship between the spring and the gear-rack inertia connection end are nonlinear, the inertia force and spring force in this scheme are transmitted through the limb connecting rod and fed back to the first and second connecting plates, which can generate geometrically nonlinear inertia force and spring force, and have variable apparent mass, and can achieve adaptive control against impact targets.

[0015] (2) The present invention utilizes the connecting rod with limbs to perform translational motion in the vertical direction, drives the translational spring group to perform horizontal motion through the middle pin, drives the gear transmission group to perform horizontal motion through the connecting rod limb pin, and then drives the flywheel to accelerate rotation. The dual geometric nonlinear impact resistance device of stiffness and inertia capacity in this scheme can realize dual adjustment according to the stiffness and inertia characteristics of the structure to be protected, has flexible and efficient impact resistance performance, and the structural force transmission path is simple and clear, the processing cost is low, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the stiffness and inertia dual nonlinear anti-shock device driven by the lattice mechanism provided by the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the translation spring group provided by the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the gear transmission group provided by the present invention.

[0019] Explanation of the reference numerals: first connecting plate 1; second connecting plate 2; connecting rod with limbs 3; spring 4; spring connecting component 5; spring guide rod 6; pin 7; rack 8; gear 9; flywheel 10; supporting back plate 11; connecting rod limb pin 12. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the present invention is further described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example:

[0023] like Figure 1 As shown, this embodiment provides a dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism, including a connecting plate, a limb connecting rod 3, a latch 7, a flywheel 10, a supporting back plate 11, a connecting rod limb latch 12, a translation spring group and a gear transmission group; the connecting plate includes a first connecting plate 1 and a second connecting plate 2; the translation spring group includes a spring 4, a spring connecting component 5 and a spring guide rod 6, as shown in FIG. Figure 2 As shown; the gear transmission group includes a rack 8 and a gear 9, as Figure 3 shown.

[0024] The first connecting plate 1 and the second connecting plate 2 are movably connected to the limb connecting rod 3 through the pin 7 respectively, the limb connecting rod 3 is connected to the spring connecting component 5 through the pin 7, and the two ends of the spring 4 and the spring guide rod 6 are fixed to the spring connecting component 5; the rack 8 is connected to the limb connecting rod 3 through the connecting rod branch pin 12, the rack 8 is meshed with the gear 9 and provides support for the movement of the gear 9; the gear 9 is fixedly connected to the flywheel 10, the flywheel 10 is fixedly connected to the support back plate 11, and the support back plate 11 is fixed to the connecting plate.

[0025] As a preferred embodiment, the limb-belt link 3 includes a first limb-belt link and a second limb-belt link, one end of the first limb-belt link and one end of the second limb-belt link are connected to the spring connection component 5 through a latch 7, the other end of the first limb-belt link is movably connected to the first connecting plate 1 through a latch 7, and the other end of the second limb-belt link is movably connected to the second connecting plate 2 through a latch 7; the number of the first limb-belt link and the second limb-belt link is 4, respectively, and they are evenly connected around the first connecting plate 1 and the second connecting plate 2. The first connecting plate 1 and the second connecting plate 2 can perform translational motion along the vertical direction and drive the connected limb-belt link 3 to rotate.

[0026] Among them, the pin 7 includes an upper pin connecting the limb link 3 and the first connecting plate 1, a middle pin connecting the limb link 3 and the spring connecting component 5, and a lower pin connecting the limb link 3 and the second connecting plate 2; the limb link 3 drives the translational spring group to move horizontally through the middle pin, and the limb link 3 drives the gear transmission group to move horizontally through the connecting rod limb pin 12.

[0027] Among them, the rack 8, the gear 9 and the flywheel 10 are symmetrically arranged with the spring guide rod 6 as the symmetry axis. There are 4 racks 8, 2 gears 9 and 2 flywheels 10. The horizontal movement of the rack 8 can drive the gear 9 to rotate. The flywheel 10 is fixed on the driving gear 9 and rotates with the driving gear 9.

[0028] The present application drives the connected limb connecting rod 3 to rotate through the relative vertical movement between the first connecting plate 1 and the second connecting plate 2. The rotation of the limb connecting rod 3 drives the horizontally arranged spring 4 and the gear-rack to deform horizontally. The gear-rack movement drives the flywheel 10 to rotate and produce an inertia effect. Since the vertical deformation between the first connecting plate 1 and the second connecting plate 2 and the deformation relationship between the spring 4 and the gear-rack inertia connection end are nonlinear, the inertia force and the spring force are transmitted through the limb connecting rod 3 and fed back to the first connecting plate 1 and the second connecting plate 2, which can generate geometrically nonlinear inertia force and spring force. The connecting plate and the limb connecting rod 3 arranged on the same horizontal plane perform translational motion along the vertical direction. The limb connecting rod 3 drives the translational spring group to perform horizontal motion through the latch 7. The limb connecting rod 3 drives the gear transmission group to perform horizontal motion through the connecting rod split limb latch 12. Finally, the gear transmission group drives the flywheel 10 to rotate faster. The dual geometric nonlinear impact-resistant device of stiffness and inertia capacity in the present application can realize dual adjustment according to the stiffness and inertia characteristics of the structure to be protected, has flexible and efficient impact resistance, and the structural force transmission path is simple and clear, with low processing cost and high practicality.

[0029] In this example, the movement of the dual nonlinear anti-impact device of stiffness and inertia driven by the lattice mechanism can be described as follows: through the relative vertical movement between the first connecting plate 1 and the second connecting plate 2, the connected limb connecting rod 3 is driven to rotate, and the rotation of the limb connecting rod 3 drives the horizontally arranged translation spring group and gear transmission group to undergo horizontal deformation, and the gear transmission group drives the flywheel 10 to rotate to produce an inertia effect.

[0030] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism, characterized in that: It comprises a connecting plate, a limb connecting rod (3), a latch (7), a flywheel (10), a supporting back plate (11), a connecting rod limb latch (12), a translation spring group and a gear transmission group; the connecting plate comprises a first connecting plate (1) and a second connecting plate (2); the translation spring group comprises a spring (4), a spring connecting component (5) and a spring guide rod (6); and the gear transmission group comprises a rack (8) and a gear (9); The limb-belt connecting rod (3) comprises a first limb-belt connecting rod and a second limb-belt connecting rod, one end of the first limb-belt connecting rod and one end of the second limb-belt connecting rod are connected to a spring connecting component (5) via a latch (7), the other end of the first limb-belt connecting rod is movably connected to the first connecting plate (1) via a latch (7), and the other end of the second limb-belt connecting rod is movably connected to the second connecting plate (2) via a latch (7); the number of the first limb-belt connecting rod and the second limb-belt connecting rod is four, respectively, and they are evenly connected to each other. Around the first connecting plate (1) and the second connecting plate (2); the two ends of the spring (4) and the spring guide rod (6) are fixed to the spring connecting component (5); the rack (8) is connected to the limb connecting rod (3) through the connecting rod splitting pin (12), the rack (8) is meshed with the gear (9) and provides support for the movement of the gear (9); the gear (9) is fixedly connected to the flywheel (10), the flywheel (10) is fixedly connected to the support back plate (11), and the support back plate (11) is fixed to the connecting plate.

2. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 1, characterized in that: The first connecting plate (1) and the second connecting plate (2) are capable of generating relative vertical movement.

3. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 2, characterized in that: The relative vertical movement between the first connecting plate (1) and the second connecting plate (2) drives the limb connecting rod (3) to rotate. The rotation of the limb connecting rod (3) drives the spring (4) and the gear transmission group to produce horizontal deformation, and drives the flywheel (10) to rotate to produce an inertia effect.

4. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 1, characterized in that: The latch (7) comprises an upper latch connecting the first limb link and the first connecting plate (1), a middle latch connecting the limb link (3) and the spring connecting component (5), and a lower latch connecting the second limb link and the second connecting plate (2).

5. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 1, characterized in that: The racks (8), gears (9) and flywheels (10) are symmetrically arranged with the spring guide rod (6) as a symmetry axis. The number of racks (8) is four, the number of gears (9) is two, and the number of flywheels (10) is two.

6. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 1, characterized in that: The horizontal movement of the rack (8) can drive the gear (9) to rotate, and the flywheel (10) rotates along with the gear (9).

7. The dual nonlinear anti-shock device of stiffness and inertia driven by a lattice mechanism according to claim 1, characterized in that: The limb-belt connecting rod (3) drives the translation spring group to move horizontally through the latch pin (7), and the limb-belt connecting rod (3) drives the gear transmission group to move horizontally through the connecting rod split limb latch pin (12).

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