CN115075418A - Self-resetting one-way friction energy dissipation device - Google Patents
Self-resetting one-way friction energy dissipation device Download PDFInfo
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- CN115075418A CN115075418A CN202210860247.5A CN202210860247A CN115075418A CN 115075418 A CN115075418 A CN 115075418A CN 202210860247 A CN202210860247 A CN 202210860247A CN 115075418 A CN115075418 A CN 115075418A
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- 230000001681 protective effect Effects 0.000 claims abstract description 94
- 238000005265 energy consumption Methods 0.000 claims abstract description 90
- 239000007787 solid Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 16
- 230000009471 action Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a self-resetting one-way friction energy consumption device, which comprises a protective cylinder; the resetting unit is concentrically arranged in the protective cylinder and is arranged in the middle of the protective cylinder; the first push-pull rod is concentrically arranged at one end of the protection cylinder, and the second push-pull rod is concentrically arranged at the other end of the protection cylinder; the first end of the first push-pull rod is connected with one end of the reset unit, and the second end of the first push-pull rod extends to the outer side of the pile casing; the first end of the second push-pull rod is connected with the other end of the resetting unit, and the second end of the second push-pull rod extends to the outer side of the pile casing; the first energy consumption unit is sleeved on the outer side of the first push-pull rod and is arranged between the first end of the first push-pull rod and the first end of the protective cylinder; the second energy consumption unit is sleeved on the outer side of the second push-pull rod and is arranged between the first end of the second push-pull rod and the second end of the protective cylinder; the first energy consumption unit and the second energy consumption unit are both friction energy consumption units; the invention realizes the mutual noninterference of the energy consumption and the reset process, has higher bearing capacity, outstanding energy consumption capability and strong self-reset performance.
Description
Technical Field
The invention belongs to the technical field of energy dissipation and shock absorption, and particularly relates to a self-resetting one-way friction energy dissipation device.
Background
The recoverable functional structure refers to a structure which can recover the use function of the structure without repair or through simple repair after a rare earthquake occurs or the structure reaches a fortification intensity earthquake; the recoverable functional structure is convenient to install and simple to maintain, and can quickly return to a normal use state after an earthquake occurs; in addition, seismic energy can be dissipated by utilizing the recoverability and the self energy consumption capacity of the structure; the recoverable functional structure has huge development space and application prospect due to excellent anti-seismic performance and rapid recovery performance after earthquake; in recent years, domestic and foreign scholars propose various self-resetting energy dissipation devices based on different resetting materials and energy dissipation mechanisms, carry out related research on the devices, and simultaneously point out some problems needing to be further perfected and solved:
(1) as a resetting material, the elastic deformation capacity of the steel strand is insufficient, and the fiber reinforcement of the composite material is difficult to anchor; although the shape memory alloy has excellent deformability, the wire and the stranded wire of the shape memory alloy have the problem of difficult anchoring; among them, the SMA wire apparatus also has a disadvantage of low load-bearing capacity.
(2) The existing self-reset energy consumption device mostly depends on energy consumption of friction energy consumption elements, so that the self-reset energy consumption device is a spear shield; for the self-resetting device, although the energy consumption capacity can be improved by adding the friction energy consumption element, the resetting capacity can be obviously reduced by the existence of the friction force in the resetting process of the device; however, if no friction energy dissipation element is added, the device has poor energy dissipation capability or even no energy dissipation phenomenon, which is not favorable for the application in the technical field of energy dissipation and shock absorption.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a self-resetting one-way friction energy consumption device, which aims to solve the technical problems that the existing self-resetting energy consumption device is small in bearing capacity and contradictory in requirements on resetting capacity and energy consumption capacity.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a self-resetting one-way friction energy consumption device which comprises a first push-pull rod, a second push-pull rod, a resetting unit, a first energy consumption unit, a second energy consumption unit and a protective cylinder, wherein the first push-pull rod is connected with the resetting unit;
the protective cylinder is of a hollow cylindrical structure; the resetting unit is concentrically arranged in the protective sleeve and is arranged in the middle of the protective sleeve; the first push-pull rod is concentrically arranged at one end of the pile casing, and the second push-pull rod is concentrically arranged at the other end of the pile casing; the first end of the first push-pull rod is connected with one end of the resetting unit, and the second end of the first push-pull rod extends to the outer side of the first end of the pile casing; the first end of the second push-pull rod is connected with the other end of the resetting unit, and the second end of the second push-pull rod extends to the outer side of the second end of the pile casing;
the first energy consumption unit is sleeved on the outer side of the first push-pull rod and is arranged between the first end of the first push-pull rod and the first end of the protective cylinder; the second energy consumption unit is sleeved on the outer side of the second push-pull rod and is arranged between the first end of the second push-pull rod and the second end of the protective cylinder; the first energy consumption unit and the second energy consumption unit are identical in structure and are friction energy consumption units.
Furthermore, the reset unit comprises an SMA screw, a first SMA baffle and a second SMA baffle;
the first SMA baffle is sleeved on the outer side of the first end of the first push-pull rod, and the second SMA baffle is sleeved on the outer side of the first end of the second push-pull rod; the SMA screw is arranged between the first SMA baffle and the second SMA baffle; one end of the SMA screw rod is fixedly connected with the first SMA baffle, and the other end of the SAM screw rod is fixedly connected with the second SMA baffle.
Further, the first SMA baffle plate and the second SMA baffle plate have the same structure and are both disc-shaped SMA baffle plates; a central mounting hole is formed in the center of the disc-shaped SMA baffle, and the first end of the first push-pull rod or the first end of the second push-pull rod penetrates through the central mounting hole; a plurality of fixing holes are formed in the periphery of the disc-shaped SMA baffle plate, and the end part of the SMA screw rod is fixedly arranged in the fixing holes in a penetrating manner; and the end part of the SMA screw rod is fixedly connected with the disc-shaped SMA baffle plate by adopting a high-strength nut.
Furthermore, stiffening ribs are arranged on the side surface of the disc-shaped SMA baffle plate; the stiffening ribs are arranged along the diameter direction of the disc-shaped SMA baffle plate in a vertical crossing mode.
Furthermore, the first energy consumption unit comprises a first inner wedge block, a first outer wedge block, a first spring baffle and a first spring;
the first inner wedge block, the first outer wedge block, the first spring baffle and the first spring are sequentially sleeved on the outer side of the first push-pull rod and are arranged between the first end of the first push-pull rod and the first end of the pile casing;
one end of the first inner wedge block is contacted with one end of the resetting unit; the other end of the first inner wedge-shaped block is a convex wedge-shaped end face; one end of the first outer wedge block is an inwards concave wedge-shaped end face; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face;
the other end of the first outer wedge-shaped block is smoothly connected with one side of the first spring baffle, and the periphery of the first outer wedge-shaped block is in frictional connection with the inner wall of the first end of the pile casing; the other side of the first spring baffle is fixedly connected with one end of the first spring, and the other end of the first spring is fixedly connected with the end part of the first end of the protective cylinder.
Further, the first outer wedge-shaped block comprises a plurality of first wedge-shaped unit bodies, and the first wedge-shaped units are sequentially spliced to form a first circular ring-shaped wedge-shaped entity; the first wedge-shaped unit body is an arc-shaped wedge-shaped entity formed by encircling a first inner arc surface, a first wedge-shaped arc surface, a first outer arc surface, a first annular surface, a second annular surface, a first end surface and a second end surface;
in the plurality of first wedge-shaped unit bodies, all the first inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a first circular ring-shaped wedge-shaped entity, all the first outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the first circular ring-shaped wedge-shaped entity, all the first wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the first circular ring-shaped wedge-shaped entity, all the first circular ring surfaces are sequentially spliced to form a first circular ring end surface of the first circular ring-shaped wedge-shaped entity, and all the second circular ring surfaces are sequentially spliced to form a second circular ring end surface of the first circular ring-shaped wedge-shaped entity; the outer annular surface of the first annular wedge-shaped entity is in rough contact with the inner wall of the first end of the protective cylinder, and the end surface of the first annular wedge-shaped entity is smoothly connected with the first spring baffle; the first end surface of one first wedge-shaped unit body is smoothly contacted with the second end surface of the adjacent first wedge-shaped unit body.
Furthermore, the second energy consumption unit comprises a second inner wedge-shaped block, a second outer wedge-shaped block, a second spring baffle and a second spring;
the second inner wedge block, the second outer wedge block, the second spring baffle and the second spring are sequentially sleeved on the outer side of the second push-pull rod and are arranged between the first end of the second push-pull rod and the second end of the pile casing;
one end of the second inner wedge block is contacted with the other end of the resetting unit; the other end of the second inner wedge block is a raised wedge-shaped end face; one end of the second outer wedge-shaped block is a concave wedge-shaped end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face;
the other end of the second outer wedge-shaped block is smoothly connected with one side of the second spring baffle, and the periphery of the second outer wedge-shaped block is in frictional connection with the inner wall of the second end of the pile casing; the other side of the second spring baffle is fixedly connected with one end of the second spring, and the other end of the second spring is fixedly connected with the end of the second end of the protective cylinder.
Further, the second outer wedge-shaped block comprises a plurality of second wedge-shaped unit bodies, and the second wedge-shaped unit bodies are sequentially spliced to form a second annular wedge-shaped entity; the second wedge-shaped unit body is an arc-shaped wedge-shaped entity formed by encircling a second inner arc surface, a second wedge-shaped arc surface, a second outer arc surface, a third circular ring surface, a fourth circular ring surface, a third end surface and a fourth end surface;
in the plurality of second wedge-shaped unit bodies, all the second inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a second circular ring-shaped wedge-shaped entity, all the second outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the second circular ring-shaped wedge-shaped entity, all the second wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the second circular ring-shaped wedge-shaped entity, all the third circular ring surfaces are sequentially spliced to form a first circular ring end surface of the second circular ring-shaped wedge-shaped entity, and all the fourth circular ring surfaces are sequentially spliced to form a second circular ring end surface of the second circular ring-shaped wedge-shaped entity; the outer circular ring surface of the second circular wedge-shaped entity is in rough contact with the inner wall of the second end of the protection cylinder; the first ring end surface of the second ring-shaped wedge-shaped solid is smoothly connected with the second spring baffle; the third end face of one second wedge-shaped unit body is tightly contacted with the fourth end face of the adjacent second wedge-shaped unit body.
Furthermore, the first push-pull rod and the second push-pull rod have the same structure and adopt a push rod structure;
the push rod structure comprises a force application rod, a connecting body and two round dowel bars; one end of the force application rod is used for being connected with the main body frame structure; the other end of the force application rod is connected with one side of the connecting body; two circular dowel bars parallel arrangement, the one end of circular dowel bar with the opposite side of connector links to each other, the other end of circular dowel bar be used for with reset unit contact.
Further, the protective cylinder comprises a middle protective cylinder, a first outer protective cylinder and a second outer protective cylinder;
the first outer protecting cylinder is detachably fixed at one end of the middle protecting cylinder, and the second outer protecting cylinder is detachably fixed at the other end of the middle protecting cylinder; the middle protective barrel, the first outer protective barrel and the second outer protective barrel are combined to form a hollow cylindrical barrel structure.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a self-resetting one-way friction energy consumption device, which is characterized in that a resetting unit is concentrically arranged in the middle of a protective cylinder and connected with two push-pull rods by utilizing the one-way friction energy consumption principle; meanwhile, the two energy consumption units are respectively sleeved outside the two push-pull rods; the friction effect of the energy consumption unit and the protective cylinder and the deformation of the reset unit can be utilized to consume energy together in the energy consumption process, the reset unit is separated from the reset unit to work independently in the reset process, the mutual interference between the energy consumption and the reset process is realized, the bearing capacity is high, the energy consumption capability is outstanding, and the self-reset performance is strong; the device has simple structure and convenient assembly, and is convenient for maintenance and replacement after earthquake.
Furthermore, the reset unit adopts a combination form of the SMA screw rod and the two SMA baffles, so that the excellent deformability of the SMA material can be effectively utilized, and the SMA material is conveniently anchored and fixed.
Furthermore, the side face of the disc-shaped SMA baffle plate is provided with the stiffening ribs, so that the bearing capacity of the disc-shaped SMA baffle plate can be effectively improved, and the anchoring fixation of the SMA screw rod can be avoided.
Furthermore, an inner wedge block and an outer wedge block in the energy consumption unit are smoothly connected, so that relative sliding is generated between the inner wedge block and the outer wedge block; meanwhile, the outer wedge-shaped block is in smooth contact with the spring baffle plate, so that relative sliding is generated between the outer wedge-shaped block and the spring baffle plate; the outer wedge-shaped block is connected with the inner wall of the pile casing in a friction mode, and the friction energy consumption capacity of the device is effectively improved.
Drawings
Fig. 1 is a schematic overall structure diagram of a self-resetting one-way friction energy dissipation device according to the present invention;
fig. 2 is a schematic view of the internal structure of the self-resetting one-way friction energy-consuming device according to the present invention;
FIG. 3 is an exploded view of a self-resetting one-way friction energy consuming device according to the present invention;
FIG. 4 is a schematic view of a push rod according to the present invention;
FIG. 5 is a schematic structural view of an SMA screw and a high-strength nut of the present invention;
FIG. 6 is a schematic diagram of a first SMA baffle structure in the present invention;
FIG. 7 is a schematic view of a first inner wedge block structure according to the present invention;
FIG. 8 is a schematic view of a first outer wedge block according to the present invention;
figure 9 is an exploded view of a first outer wedge of the present invention;
FIG. 10 is a schematic view of a first wedge-shaped unit cell according to the present invention;
FIG. 11 is a schematic diagram of a first spring retainer structure according to the present invention;
FIG. 12 is a schematic view of a first spring structure according to the present invention;
FIG. 13 is a schematic view of the structure of the middle protective sleeve in the present invention;
FIG. 14 is a schematic structural view of a first outer jacket according to the present invention;
fig. 15 is a schematic view of the working state of the self-resetting one-way friction energy-consuming device according to the present invention.
The device comprises a first push-pull rod 1, a second push-pull rod 2, an SMA screw rod 3, a high-strength nut 4, a first SMA baffle 5, a second SMA baffle 6, a middle protective cylinder 7, a first inner wedge block 8, a second inner wedge block 9, a first outer wedge block 10, a second outer wedge block 11, a first spring baffle 12, a second spring baffle 13, a first spring 14, a second spring 15, a first outer protective cylinder 16, a first outer protective cylinder 17 and a first wedge unit 18; 101 force application rod, 102 connecting body and 103 round force transmission rod.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a self-resetting one-way friction energy consumption device which comprises a first push-pull rod 1, a second push-pull rod 2, a resetting unit, a first energy consumption unit, a second energy consumption unit and a protective cylinder.
The protective cylinder is of a hollow cylindrical structure and comprises a middle protective cylinder 7, a first outer protective cylinder 16 and a second outer protective cylinder 17; the first outer protecting cylinder is detachably fixed at one end of the middle protecting cylinder 7, the second outer protecting cylinder 17 is detachably fixed at the other end of the middle protecting cylinder 7, and the middle protecting cylinder 7, the first outer protecting cylinder 16 and the second outer protecting cylinder 17 are combined to form a hollow cylindrical cylinder structure; a first central hole is formed in the center of the end face of the first outer casing 16, and a second end of the first push-pull rod 1 penetrates through the first central hole; a second central hole is formed in the center of the end face of the second outer casing 17, and a second end of the second push-pull rod 1 penetrates through the second central hole.
The resetting unit is concentrically arranged in the protecting cylinder and is arranged in the middle of the middle protecting cylinder 7; the first push-pull rod 1 is concentrically arranged at one end of the pile casing, and the second push-pull rod 2 is concentrically arranged at the other end of the pile casing; a first end of the first push-pull rod 1 is connected with one end of the resetting unit, and a second end of the first push-pull rod 1 penetrates through the first central hole and extends to the outer side of the end face of the first outer casing 16; a first end of the second push-pull rod 2 is connected with the other end of the resetting unit, and a second end of the second push-pull rod 2 penetrates through the second central hole and extends to the outer side of the end face of the second outer protective cylinder 17.
The first energy consumption unit is sleeved on the outer side of the first push-pull rod 1 and is arranged between the first end of the first push-pull rod 1 and the first end of the pile casing; the second energy consumption unit is sleeved on the outer side of the second push-pull rod 2 and is arranged between the first end of the second push-pull rod 2 and the second end of the pile casing; the first energy consumption unit and the second energy consumption unit are identical in structure and are friction energy consumption units.
In the invention, the reset unit comprises an SMA screw rod 3, a first SMA baffle 5 and a second SMA baffle 6; the first SMA baffle 5 is sleeved outside the first end of the first push-pull rod 1, and the second SMA baffle 6 is sleeved outside the first end of the second push-pull rod 2; the SMA screw 3 is arranged between the first SMA baffle 5 and the second SMA baffle 6 and is coaxially arranged with the middle protective cylinder 7; one end of the SMA screw 3 is fixedly connected with the first SMA baffle 5, and the other end of the SMA screw 3 is fixedly connected with the second SMA baffle 6; the first SMA baffle plate and the second SMA baffle plate 6 have the same structure and adopt disc-shaped SMA baffle plates; a central mounting hole is formed in the center of the disc-shaped SMA baffle, and the first end of the first push-pull rod 1 or the first end of the second push-pull rod 2 penetrates through the central hole; a plurality of fixing holes are formed in the periphery of the disc-shaped SMA baffle plate, and the end part of the SMA screw rod 3 is fixedly arranged in the fixing holes in a penetrating mode; preferably, the end part of the SMA screw rod 3 is fixedly connected with the disc-shaped SMA baffle plate by a high-strength nut 4; stiffening ribs are arranged on the side surface of the disc-shaped SMA baffle plate; the stiffening ribs are arranged along the diameter direction of the disc-shaped SMA baffle plate in a vertical crossing mode.
In the invention, the first push-pull rod 1 and the second push-pull rod 2 have the same structure and both adopt a push rod structure; the push rod structure comprises a force application rod, a connecting body and two round dowel bars; one end of the force application rod is used for being connected with the main body frame structure, and the other end of the force application rod is connected with one side of the connecting body; two circular dowel bars parallel arrangement, the one end of circular dowel bar with the opposite side of connector links to each other, the other end of circular dowel bar be used for with reset unit contact.
In the invention, the first energy consumption unit comprises a first inner wedge block 8, a first outer wedge block 10, a first spring baffle 12 and a first spring 14; the first inner wedge-shaped block 8, the first outer wedge-shaped block 10, the first spring baffle plate 12 and the first spring 14 are sequentially sleeved outside the first push-pull rod 1 and are arranged between the first end of the first push-pull rod 1 and the first end of the pile casing; one end of the first inner wedge block 8 is contacted with one end of the resetting unit; the other end of the first inner wedge block 8 is a convex wedge-shaped end surface; one end of the first outer wedge block 10 is an inwards concave wedge end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face; the other end of the first outer wedge block 10 is smoothly connected with one side of the first spring baffle 12, and the periphery of the first outer wedge block 10 is in friction connection with the inner wall of the first end of the pile casing; the other side of the first spring baffle 12 is fixedly connected with one end of the first spring 14, and the other end of the first spring 14 is fixedly connected with the first end of the pile casing.
The first outer wedge block 10 comprises a plurality of first wedge unit bodies 18, and the first wedge unit bodies 18 are sequentially spliced to form a first circular wedge-shaped solid; the first wedge-shaped unit body 18 is an arc-shaped wedge-shaped entity formed by encircling a first inner arc surface, a first wedge-shaped arc surface, a first outer arc surface, a first annular surface, a second annular surface, a first end surface and a second end surface; in the plurality of first wedge-shaped unit bodies 18, all the first inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a first circular ring-shaped wedge-shaped entity, all the first outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the first circular ring-shaped wedge-shaped entity, all the first wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the first circular ring-shaped wedge-shaped entity, all the first circular ring surfaces are sequentially spliced to form a first circular ring end surface of the first circular ring-shaped wedge-shaped entity, and all the second circular ring surfaces are sequentially spliced to form a second circular ring end surface of the first circular ring-shaped wedge-shaped entity; the outer annular surface of the first annular wedge-shaped entity is in rough contact with the inner wall of the first end of the protective cylinder, and the end surface of the first annular wedge-shaped entity is smoothly connected with the first spring baffle 12; the first end surface of one first wedge-shaped unit body is smoothly contacted with the second end surface of the adjacent first wedge-shaped unit body.
In the invention, the second energy consumption unit comprises a second inner wedge-shaped block 9, a second outer wedge-shaped block 11, a second spring baffle 13 and a second spring 15; the second inner wedge-shaped block 9, the second outer wedge-shaped block 11, the second spring baffle 13 and the second spring 15 are sequentially sleeved outside the second push-pull rod 2 and are arranged between the first end of the second push-pull rod 2 and the second end of the pile casing; one end of the second inner wedge block 9 is contacted with the other end of the resetting unit; the other end of the second inner wedge-shaped block 9 is a convex wedge-shaped end surface; one end of the second outer wedge block 11 is a concave wedge-shaped end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face; the other end of the second outer wedge-shaped block 11 is smoothly connected with one side of the second spring baffle 13, and the periphery of the second outer wedge-shaped block 11 is in friction connection with the inner wall of the second end of the pile casing; the other side of the second spring baffle 13 is fixedly connected with one end of a second spring 15, and the other end of the second spring 15 is fixedly connected with the end part of the second end of the protective cylinder.
The second outer wedge-shaped block 11 comprises a plurality of second wedge-shaped unit bodies which are sequentially spliced to form a second circular wedge-shaped entity; the second wedge-shaped unit body is an arc-shaped wedge-shaped entity formed by encircling a second inner arc surface, a second wedge-shaped arc surface, a second outer arc surface, a third circular ring surface, a fourth circular ring surface, a third end surface and a fourth end surface; in the plurality of second wedge-shaped unit bodies, all the second inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a second circular ring-shaped wedge-shaped entity, all the second outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the second circular ring-shaped wedge-shaped entity, all the second wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the second circular ring-shaped wedge-shaped entity, all the third circular ring surfaces are sequentially spliced to form a first circular ring end surface of the second circular ring-shaped wedge-shaped entity, and all the fourth circular ring surfaces are sequentially spliced to form a second circular ring end surface of the second circular ring-shaped wedge-shaped entity; the outer circular ring surface of the second circular wedge-shaped entity is in rough contact with the inner wall of the second end of the protection cylinder; the first ring end surface of the second ring-shaped wedge-shaped solid is smoothly connected with the second spring baffle 13; the third end face of one second wedge-shaped unit body is tightly contacted with the fourth end face of the adjacent second wedge-shaped unit body.
The self-resetting one-way friction energy consumption device provided by the invention utilizes the one-way friction energy consumption principle, and the resetting unit is concentrically arranged in the middle of the protective cylinder and is connected with the two push-pull rods; meanwhile, the two energy consumption units are respectively sleeved outside the two push-pull rods; the friction effect of the energy consumption unit and the protective cylinder and the deformation of the reset unit can be utilized to consume energy together in the energy consumption process, the reset unit is separated from the reset unit to work independently in the reset process, the mutual interference between the energy consumption and the reset process is realized, the bearing capacity is high, the energy consumption capability is outstanding, and the self-reset performance is strong; the device has simple structure and convenient assembly, and is convenient for maintenance and replacement after earthquake.
Examples
As shown in fig. 1 to 14, the present embodiment provides a self-resetting one-way friction energy dissipation device, which includes a first push-pull rod 1, a second push-pull rod 2, a resetting unit, a first energy dissipation unit, a second energy dissipation unit, and a sheath.
In this embodiment, the first push-pull rod 1 and the second push-pull rod 2 have the same structure, and both adopt a push rod structure; the push rod structure comprises a force application rod 101, a connecting body 102 and two circular dowel bars 103; one end of the force application rod 101 is used for being connected with a main body frame structure, and the other end of the force application rod 101 is connected with the middle part of the first side of the connecting body 102; two circular dowel bars 103 are arranged in parallel, one end of each circular dowel bar 103 is connected with the second side of the connecting body 102, and the other end of each circular dowel bar 103 is used for being in contact with the reset unit; wherein, two round dowel bars 103 are respectively located at two ends of a second side of the connecting body 102.
In this embodiment, the casing is a hollow cylindrical structure, and includes a middle casing 7, a first outer casing 16 and a second outer casing 17; the first outer protecting cylinder is detachably fixed at one end of the middle protecting cylinder 7, and the second outer protecting cylinder 17 is detachably fixed at the other end of the middle protecting cylinder 7; the middle protective cylinder 7, the first outer protective cylinder 16 and the second outer protective cylinder 17 are combined to form a hollow cylindrical structure, the middle protective cylinder 7 is a cylindrical cylinder with openings at two ends, and the first outer protective cylinder 16 and the second outer protective cylinder 17 are both cylindrical cylinders with openings at one end; external threads are respectively arranged on the outer sides of two ends of the middle protective cylinder 7, internal threads are respectively arranged at the opening ends of the first outer protective cylinder 16 and the second outer protective cylinder 17, and the external threads are matched and connected with the internal threads; the center of the closed end of the first outer protective cylinder 16 is provided with a first central hole, and the center of the end surface of the second outer protective cylinder 17 is provided with a second central hole.
The first push-pull rod 1 is concentrically arranged at one end of the middle protective cylinder 7 and extends to the outer side of the closed end of the first outer protective cylinder 16; specifically, the force application rod in the first push-pull rod 1 is arranged to penetrate through the first central hole and extend to the outer side of the closed end of the first outer casing 16; the second push-pull rod 2 is concentrically arranged at the other end of the middle protective cylinder 7 and extends to the outer side of the closed end of the second outer protective cylinder 17; specifically, the force application rod of the second push-pull rod 2 is disposed through the second central hole and extends to the outside of the closed end of the second outer casing 17.
In this embodiment, the resetting unit is concentrically arranged in the casing and is arranged in the middle of the middle casing 7; one end of the resetting unit is connected with the first push-pull rod 1, and the other end of the resetting unit is connected with the second push-pull rod 2; the reset unit comprises an SMA screw rod 3, a high-strength nut 4, a first SMA baffle 5 and a second SMA baffle 6; the first SMA baffle 5 is sleeved on a force application rod in the first push-pull rod 1 and is arranged on a first side of a connecting body in the first push-pull rod 1; the second SMA baffle 6 is sleeved on the force application rod in the second push-pull rod 2 and is arranged on the first side of the connecting body in the second push-pull rod 2; the SMA screw 3 is arranged between the first SMA baffle 5 and the second SMA baffle 6 and is coaxially arranged with the middle protective cylinder 7; the end part of the force application rod in the first push-pull rod 1 and the second side of the connecting body in the second push-pull rod 2 are both in contact with one side surface of the second SMA baffle 6, and the other side surface of the second SMA baffle 6 is in contact with a second inner wedge block 9 in the second energy consumption unit; the end part of a force application rod in the second push-pull rod 2 and the second side of a connecting body in the first push-pull rod are both in contact with one side surface of the first SMA baffle 5, and the other side of the first SMA baffle 5 is in contact with a first inner wedge block 8 in the second energy consumption unit.
One end of the SMA screw 3 is fixedly connected with the first SMA baffle 5, and the other end of the SMA screw 3 is fixedly connected with the second SMA baffle 6; the first SMA baffle 5 and the second SMA baffle 6 have the same structure and adopt disc-shaped SMA baffles; a central mounting hole is formed in the center of the disc-shaped SMA baffle, and a force application rod in the first push-pull rod 1 or a force application rod in the second push-pull rod 2 penetrates through the central mounting hole; a plurality of fixing holes are formed in the periphery of the disc-shaped SMA baffle plate, and the end part of the SMA screw rod 3 is fixedly transmitted in the fixing holes; the end part of the SMA screw rod 3 is fixedly connected with the disc-shaped SMA baffle plate by a high-strength nut 4; stiffening ribs are arranged on the side surface of the disc-shaped SMA baffle; the stiffening ribs are arranged along the diameter direction of the disc-shaped SMA baffle plate in a vertical crossing manner; and the stiffening rib is arranged between the disc-shaped SMA baffle plate and the first energy consumption unit or the second energy consumption unit.
In this embodiment, the first energy consuming unit includes a first inner wedge 8, a first outer wedge 10, a first spring retainer 12, and a first spring 14; the first inner wedge-shaped block 8, the first outer wedge-shaped block 10, the first spring baffle plate 12 and the first spring 14 are sequentially sleeved outside the force application rod in the first push-pull rod 1 and are arranged between the first end of the middle protective cylinder 7 and the first outer protective cylinder 16; one end of the first inner wedge-shaped block 8 is in contact with the first SMA baffle 5 in the resetting unit, and the other end of the first inner wedge-shaped block 8 is a convex wedge-shaped end face; one end of the first outer wedge block 10 is an inwards concave wedge end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face; the other end of the first outer wedge block 10 is smoothly connected with one side of the first spring baffle 12, and the periphery of the first outer wedge block 10 is in friction connection with the inner wall of the middle protective cylinder 7; the other side of the first spring baffle 12 is fixedly connected with one end of the first spring 14, and the other end of the first spring 14 is fixedly connected with the inner wall of the closed end of the first outer casing 16.
The first outer wedge block 10 comprises four first wedge-shaped unit bodies 18 which are sequentially spliced to form a first circular ring wedge-shaped entity; the first wedge-shaped unit body 18 is an arc-shaped wedge-shaped entity formed by encircling a first inner arc surface, a first wedge-shaped arc surface, a first outer arc surface, a first annular surface, a second annular surface, a first end surface and a second end surface; in the plurality of first wedge-shaped unit bodies 18, all the first inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a first circular ring-shaped wedge-shaped entity, all the first outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the first circular ring-shaped wedge-shaped entity, all the first wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the first circular ring-shaped wedge-shaped entity, all the first circular ring surfaces are sequentially spliced to form a first circular ring end surface of the first circular ring-shaped wedge-shaped entity, and all the second circular ring surfaces are sequentially spliced to form a second circular ring end surface of the first circular ring-shaped wedge-shaped entity; the outer annular surface of the first annular wedge-shaped entity is in rough contact with the inner wall of the first end of the middle protective cylinder 7, and the end surface of the first annular wedge-shaped entity is smoothly connected with the first spring baffle 12; the first end surface of one first wedge-shaped unit body is smoothly contacted with the second end surface of the adjacent first wedge-shaped unit body.
In this embodiment, the second energy consumption unit includes a second inner wedge 9, a second outer wedge 11, a second spring baffle 13, and a second spring 15; the second inner wedge-shaped block 9, the second outer wedge-shaped block 11, the second spring baffle 13 and the second spring 15 are sequentially sleeved outside the force application rod in the second push-pull rod 2 and are arranged between the second end of the middle protective cylinder 7 and the second outer protective cylinder 17; one end of the second inner wedge-shaped block 9 is contacted with a second SMA baffle 6 in the resetting unit; the other end of the second inner wedge-shaped block 9 is a convex wedge-shaped end surface; one end of the second outer wedge block 11 is a concave wedge-shaped end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face; the other end of the second outer wedge-shaped block 11 is smoothly connected with one side of the second spring baffle 13, and the periphery of the second outer wedge-shaped block 11 is in frictional connection with the inner wall of the middle protective cylinder 7; the other side of the second spring baffle 13 is fixedly connected with one end of a second spring 15, and the other end of the second spring 15 is fixedly connected with the inner wall of the closed end of the second outer protective cylinder 17.
The second outer wedge-shaped block 11 comprises four second wedge-shaped unit bodies which are sequentially spliced to form a second annular wedge-shaped entity; the second wedge-shaped unit body is an arc-shaped wedge-shaped entity formed by encircling a second inner arc surface, a second wedge-shaped arc surface, a second outer arc surface, a third circular ring surface, a fourth circular ring surface, a third end surface and a fourth end surface; in the plurality of second wedge-shaped unit bodies, all the second inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a second circular ring-shaped wedge-shaped entity, all the second outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the second circular ring-shaped wedge-shaped entity, all the second wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the second circular ring-shaped wedge-shaped entity, all the third circular ring surfaces are sequentially spliced to form a first circular ring end surface of the second circular ring-shaped wedge-shaped entity, and all the fourth circular ring surfaces are sequentially spliced to form a second circular ring end surface of the second circular ring-shaped wedge-shaped entity; the outer annular surface of the second annular wedge-shaped entity is in rough contact with the inner wall of the second end of the middle protective cylinder 7; the first ring end surface of the second ring-shaped wedge-shaped solid is smoothly connected with the second spring baffle 13; the third end face of one of the second wedge-shaped unit bodies is in close contact with the fourth end face of an adjacent second wedge-shaped unit body.
In the self-resetting one-way friction energy dissipation device of the embodiment, the first push-pull rod 1 and the second push-pull rod 2 are arranged in a 90-degree crossed manner, and the first SMA baffle 5 and the second SMA baffle 6 are respectively arranged on two sides of the first push-pull rod 1 and the second push-pull rod 2; the first SMA baffle 5 and the second SMA baffle 6 are connected through a plurality of SMA screws 3 and a plurality of high-strength nuts 4; the first SMA baffle 5 is in hard contact with the first inner wedge block 8, and the second SMA baffle 6 is in hard contact with the second inner wedge block 9; the first outer wedge 10 is arranged on the outer side of the first inner wedge 8, and the second outer wedge 11 is arranged on the outer side of the second inner wedge 9; the first outer wedge block 10 and the second outer wedge block 11 are both tightly and hard contacted with the inside of the middle protective cylinder 7 and can freely move along the horizontal direction; the first spring baffle 12 is positioned at the outer side of the first outer wedge block 10, and the second spring baffle 13 is positioned at the outer side of the second outer wedge block 11; the first end of the first spring 14 is welded and fixed with the first spring baffle 12, and the first end of the second spring 15 is welded and fixed with the second spring baffle 13; the first outer protective barrel 16 is positioned at the second end of the first spring 14, the second outer protective barrel 17 is positioned at the second end of the second spring 15, and the first outer protective barrel 16 and the second outer protective barrel 17 are fixedly connected with the middle protective barrel 7 through threads.
The first SMA baffle 5, the second SMA baffle 6, the first inner wedge 8, the second inner wedge 9, the first spring baffle 12, the second spring baffle 13, the first outer protective cylinder 16 and the second outer protective cylinder 17 are all provided with circular holes at the same horizontal axis, so that the first push-pull rod 1 and the second push-pull rod 2 can conveniently penetrate through the holes and are connected with each other; the first SMA baffle 5 and the second SMA baffle 6 are provided with bolt holes at corresponding positions so that the first SMA baffle 5 and the second SMA baffle 6 are connected through the SMA screws 3 and the high-strength nuts 4; first SMA baffle 5 and second SMA baffle 6 all set up the stiffening rib, are favorable to reducing its deformation, but the stiffening rib setting should not influence the anchor operation of SMA screw rod.
In this embodiment, the first push-pull rod 1, the second push-pull rod 2, the first SMA baffle 5, the second SMA baffle 6, the middle pile casing 7, the first inner wedge block 8, the second inner wedge block 9, the first outer wedge block 10, the second outer wedge block 11, the first spring baffle 12, the second spring baffle 13, the first spring 14, the second spring 15, the first outer pile casing 16, and the second outer pile casing 17 are all aligned on the same horizontal axis.
In the embodiment, the wedge surfaces of the inner wedge block and the outer wedge block are smoothly arranged, so that relative sliding is easy to occur between the inner wedge block and the outer wedge block; the contact surface between the outer wedge block and the spring baffle is smoothly arranged, so that relative sliding is easy to occur between the outer wedge block and the spring baffle; the contact surface between the outer wedge-shaped block and the middle protective cylinder is relatively rough so as to improve the friction energy consumption capability of the device.
In this embodiment, the contact surfaces between the first outer casing 16, the second outer casing 17 and the middle casing 7 are provided with corresponding threads for engagement, so as to facilitate the connection and fixation of the outer casing and the middle casing and apply pre-pressure to the spring; the outer wedge block can be processed by Q235 steel or low yield point steel, and the friction coefficient of each surface of the outer wedge block can be adjusted by an additional process; the push rod is made of Q460 steel, and the rest parts can be made of Q345 or Q420 steel.
In this embodiment, the resetting capability of the self-resetting one-way friction energy consumption device is determined by SMA material parameters; the energy consumption capability is determined by parameters such as the contact surface angle of the inner wedge block and the outer wedge block, the friction coefficient of the outer wedge block and the middle protective barrel, the friction coefficient of the outer wedge block and the spring baffle, the rigidity coefficient of the spring, the prepressing length of the spring and the like; the energy consumption system and the reset system can be combined for application or can be respectively and independently applied; meanwhile, the proportion of the energy consumption capacity and the reset capacity is controlled by adjusting the parameters.
The self-resetting one-way friction energy consumption device has the advantages that required parts can be machined in a factory, and welding requirements are avoided during field assembly; the assembling process of the self-resetting one-way friction energy consumption device comprises the following specific steps:
(1) the first push-pull rod 1 and the second push-pull rod 2 are arranged in a 90-degree crossed manner.
(2) And a first SMA baffle 5 and a second SMA baffle 6 are respectively nested on the first push-pull rod 1 and the second push-pull rod 2 and are fixed by applying pretightening force through the SMA screw rod 3 and the high-strength nut 4, and the reset unit is installed at the moment.
(3) And placing the reset unit after being installed in the middle protective cylinder and adjusting the horizontal axis to be centered.
(4) The first inner wedge block 8 and the second inner wedge block 9 are respectively nested on the first push-pull rod 1 and the second push-pull rod 2.
(5) And (3) placing a plurality of wedge-shaped unit bodies in the pile casing, pushing the wedge-shaped surfaces of the wedge-shaped unit bodies to be in close contact with the wedge-shaped surfaces of the inner wedge-shaped blocks, and splicing the first outer wedge-shaped block 10 and the second outer wedge-shaped block 11.
(6) The first spring baffle 12, the second spring baffle 13, the first spring 14 and the second spring 15 are respectively nested on the first push-pull rod 1 and the second push-pull rod 2.
(7) The first outer protective cylinder 16 and the second outer protective cylinder 17 are respectively nested on the first push-pull rod 1 and the second push-pull rod 2, the positions of the aligned threads are adjusted, the aligned threads are twisted and screwed on the middle protective cylinder 7, and the pre-pressure of the spring is controlled through pre-tightening force or screwing displacement.
The working principle is as follows:
as shown in fig. 15, the working process of the self-resetting one-way friction energy-consuming device of this embodiment will be described in detail by taking the tension state, the initial state, and the compression state of the self-resetting one-way friction energy-consuming device as an example, which is specifically as follows:
in a tensioned state:
when the first push-pull rod 1 and the second push-pull rod 2 are simultaneously under the action of a pulling force, the force is transmitted between the connecting piece on the push-pull rods and the SMA baffle plate, and the two parallel round force transmission rods are in an unstressed state. The first SMA baffle 5 moves towards a first direction, and the second SMA baffle 6 moves towards a second direction; the first direction is the direction of the first push-pull rod 1, and the second direction is the direction of the second push-pull rod 2; the SMA screw rod inside the spring is in a tension state, and the springs on the two sides outside the spring are in a compression state. Taking the first push-pull rod as an example, when the first SMA baffle 5 moves towards the first direction, the first wedge-shaped inner block 8 moves towards the first direction under the thrust action of the first SMA baffle 5, the first wedge-shaped outer block 10 receives the thrust towards the first direction of the first wedge-shaped inner block 8 and the resistance towards the second direction provided by the spring baffle, the first wedge-shaped outer block 10 has a tendency of sliding along a wedge surface while moving towards the first direction, and the first wedge-shaped outer block 10 and the inner wall of the middle protective cylinder 7 are extruded to generate friction force; if the pulling force action is cancelled at a certain moment, the first push-pull rod resets under the action of the SMA screw, the first spring moves towards the second direction under the action of the restoring force of the spring, the inner wedge block and the outer wedge block are not blocked, the first wedge block 10 and the inner wall of the middle protective cylinder 7 have no extrusion force or friction force, and the first spring can reset freely; the working principle of the second push-pull rod is the same as that of the first push-pull rod in the tensioning process, and the description is omitted here.
And (3) a pressed state:
when the first push-pull rod 1 and the second push-pull rod 2 are simultaneously under the action of pressure, the end parts of two parallel round force transmission rods on the push-pull rods are in contact with the SMA baffle plate to transmit force, and the whole push-pull rods are in a compressed state; the first SMA baffle 5 moves in a direction far away from the first direction, the second SMA baffle 6 moves in a direction far away from the second direction, the SMA screw in the second SMA baffle is in a tensioned state, and springs on two sides of the outer SMA baffle are in a compressed state; taking the first push-pull rod as an example, when the first SMA baffle 5 moves in a direction away from the first direction, the first wedge-shaped inner block 8 moves in the direction away from the first direction under the thrust action of the first SMA baffle 5, the first wedge-shaped outer block 10 receives the thrust of the first wedge-shaped inner block 8 in the direction away from the first direction and the resistance force provided by the spring baffle in the direction away from the second direction, the first wedge-shaped outer block 10 has a tendency of sliding along a wedge surface while moving in the direction away from the first direction, and the first wedge-shaped outer block 10 and the inner wall of the middle protective cylinder 7 are extruded to generate friction force; if the pressure action is removed at a certain moment, the push-pull rod resets in advance under the action of the SMA screw, the first spring moves towards the direction far away from the second direction under the action of the spring restoring force, the inner wedge block and the outer wedge block are not blocked, the first wedge block 10 and the inner wall of the middle protective cylinder 7 have no extrusion force or friction force, and the spring system can reset freely. The working principle of the second push-pull rod in the compression process is the same as that of the first push-pull rod, and the details are not repeated.
The self-reset one-way friction energy consumption device is formed by connecting two energy consumption units and a reset unit in series; wherein the reset unit provides a reset capability; the energy consumption unit adopts a spring, an inner wedge-shaped block, an outer wedge-shaped block and a middle protective barrel to form a one-way friction energy consumption mechanism; in the invention, the friction energy consumption process and the reset process are not interfered with each other, and the friction energy consumption process and the reset process can work together and can be respectively and independently applied according to engineering requirements; the device has the advantages of outstanding energy consumption capability, strong self-resetting capability, high industrial production efficiency, simple assembly, maintenance and replacement and the like.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention to be claimed is not limited to the embodiment, but includes any changes, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. A self-resetting one-way friction energy consumption device is characterized by comprising a first push-pull rod (1), a second push-pull rod (2), a resetting unit, a first energy consumption unit, a second energy consumption unit and a protective cylinder;
the protective cylinder is of a hollow cylindrical structure; the resetting unit is concentrically arranged in the protective sleeve and is arranged in the middle of the protective sleeve; the first push-pull rod (1) is concentrically arranged at one end of the pile casing, and the second push-pull rod (2) is concentrically arranged at the other end of the pile casing; the first end of the first push-pull rod (1) is connected with one end of the resetting unit, and the second end of the first push-pull rod (1) extends to the outer side of the first end of the pile casing; the first end of the second push-pull rod (2) is connected with the other end of the resetting unit, and the second end of the second push-pull rod (2) extends to the outer side of the second end of the pile casing;
the first energy consumption unit is sleeved on the outer side of the first push-pull rod (1) and is arranged between the first end of the first push-pull rod (1) and the first end of the pile casing; the second energy consumption unit is sleeved on the outer side of the second push-pull rod (2) and is arranged between the first end of the second push-pull rod (2) and the second end of the protective cylinder; the first energy consumption unit and the second energy consumption unit are identical in structure and are friction energy consumption units.
2. A self-resetting one-way friction energy consumption device according to claim 1, characterized in that the resetting unit comprises an SMA screw (3), a first SMA baffle (5) and a second SMA baffle (6);
the first SMA baffle (5) is sleeved outside the first end of the first push-pull rod (1), and the second SMA baffle (6) is sleeved outside the first end of the second push-pull rod (2); the SMA screw (3) is arranged between the first SMA baffle plate (5) and the second SMA baffle plate (6); one end of the SMA screw rod (3) is fixedly connected with the first SMA baffle (5), and the other end of the SAM screw rod (3) is fixedly connected with the second SMA baffle (6).
3. A self-resetting one-way friction energy consumption device according to claim 2, characterized in that the first SMA baffle and the second SMA baffle (6) are of the same structure and adopt disc-shaped SMA baffles; a central mounting hole is formed in the center of the disc-shaped SMA baffle, and the first end of the first push-pull rod (1) or the first end of the second push-pull rod (2) penetrates through the central mounting hole; a plurality of fixing holes are formed in the periphery of the disc-shaped SMA baffle plate, and the end part of the SMA screw rod (3) is fixedly arranged in the fixing holes in a penetrating mode; the end part of the SMA screw rod (3) is fixedly connected with the disc-shaped SMA baffle plate through a high-strength nut (4).
4. A self-resetting one-way friction energy dissipation device according to claim 3, wherein the disc-shaped SMA baffle is provided with stiffening ribs on the side; the stiffening ribs are arranged along the diameter direction of the disc-shaped SMA baffle plate in a vertical crossing mode.
5. A self-resetting one-way friction dissipative device according to claim 1, characterized in that said first dissipative unit comprises a first inner wedge (8), a first outer wedge (10), a first spring stop (12) and a first spring (14);
the first inner wedge block (8), the first outer wedge block (10), the first spring baffle plate (12) and the first spring (14) are sequentially sleeved on the outer side of the first push-pull rod (1) and are arranged between the first end of the first push-pull rod (1) and the first end of the pile casing;
one end of the first inner wedge block (8) is contacted with one end of the resetting unit; the other end of the first inner wedge block (8) is a raised wedge end face; one end of the first outer wedge block (10) is an inwards concave wedge end face; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face;
the other end of the first outer wedge block (10) is smoothly connected with one side of the first spring baffle plate (12), and the periphery of the first outer wedge block (10) is in friction connection with the inner wall of the first end of the pile casing; the other side of the first spring baffle (12) is fixedly connected with one end of the first spring (14), and the other end of the first spring (14) is fixedly connected with the end part of the first end of the protective cylinder.
6. The self-resetting one-way friction energy consumption device according to claim 5, characterized in that the first external wedge-shaped block (10) comprises a plurality of first wedge-shaped unit bodies (18), and the plurality of first wedge-shaped units (18) are sequentially spliced to form a first circular ring-shaped wedge-shaped solid body; the first wedge-shaped unit body (18) is an arc-shaped wedge-shaped entity formed by encircling a first inner arc surface, a first wedge-shaped arc surface, a first outer arc surface, a first circular ring surface, a second circular ring surface, a first end surface and a second end surface;
in the plurality of first wedge-shaped unit bodies (18), all the first inner arc surfaces are sequentially spliced to form an inner circular ring surface of a first circular ring-shaped wedge-shaped entity, all the first outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the first circular ring-shaped wedge-shaped entity, all the first wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the first circular ring-shaped wedge-shaped entity, all the first circular ring surfaces are sequentially spliced to form a first circular ring end surface of the first circular ring-shaped wedge-shaped entity, and all the second circular ring surfaces are sequentially spliced to form a second circular ring end surface of the first circular ring-shaped wedge-shaped entity; the outer annular surface of the first annular wedge-shaped entity is in rough contact with the inner wall of the first end of the protective cylinder, and the end surface of the first annular wedge-shaped entity is smoothly connected with the first spring baffle (12); the first end surface of one first wedge-shaped unit body is smoothly contacted with the second end surface of the adjacent first wedge-shaped unit body.
7. A self-resetting one-way friction energy consumption device according to claim 1, characterized in that said second energy consumption unit comprises a second inner wedge (9), a second outer wedge (11), a second spring baffle (13) and a second spring (15);
a second inner wedge block (9), a second outer wedge block (11), a second spring baffle plate (13) and a second spring (15) are sequentially sleeved on the outer side of the second push-pull rod (2) and are arranged between the first end of the second push-pull rod (2) and the second end of the protective cylinder;
one end of the second inner wedge block (9) is contacted with the other end of the resetting unit; the other end of the second inner wedge block (9) is a raised wedge end face; one end of the second outer wedge-shaped block (11) is a concave wedge-shaped end surface; the convex wedge-shaped end face is matched and connected with the concave wedge-shaped end face and is in smooth contact with the concave wedge-shaped end face;
the other end of the second outer wedge-shaped block (11) is smoothly connected with one side of the second spring baffle (13), and the periphery of the second outer wedge-shaped block (11) is in friction connection with the inner wall of the second end of the casing; the other side of the second spring baffle (13) is fixedly connected with one end of a second spring (15), and the other end of the second spring (15) is fixedly connected with the end part of the second end of the protective cylinder.
8. The self-resetting one-way friction energy consumption device according to claim 7, wherein the second outer wedge-shaped block (11) comprises a plurality of second wedge-shaped unit bodies, and the plurality of second wedge-shaped unit bodies are sequentially spliced to form a second circular ring-shaped wedge-shaped solid body; the second wedge-shaped unit body is an arc-shaped wedge-shaped entity formed by encircling a second inner arc surface, a second wedge-shaped arc surface, a second outer arc surface, a third circular ring surface, a fourth circular ring surface, a third end surface and a fourth end surface;
in the plurality of second wedge-shaped unit bodies, all the second inner circular arc surfaces are sequentially spliced to form an inner circular ring surface of a second circular ring-shaped wedge-shaped entity, all the second outer circular ring surfaces are sequentially spliced to form an outer circular ring surface of the second circular ring-shaped wedge-shaped entity, all the second wedge-shaped arc surfaces are sequentially spliced to form an inwards concave wedge-shaped end surface of the second circular ring-shaped wedge-shaped entity, all the third circular ring surfaces are sequentially spliced to form a first circular ring end surface of the second circular ring-shaped wedge-shaped entity, and all the fourth circular ring surfaces are sequentially spliced to form a second circular ring end surface of the second circular ring-shaped wedge-shaped entity; the outer circular ring surface of the second circular wedge-shaped entity is in rough contact with the inner wall of the second end of the protection cylinder; the first ring end surface of the second ring-shaped wedge-shaped solid is smoothly connected with the second spring baffle (13); the third end face of one second wedge-shaped unit body is tightly contacted with the fourth end face of the adjacent second wedge-shaped unit body.
9. A self-resetting one-way friction energy consumption device according to claim 1, characterized in that the first push-pull rod (1) and the second push-pull rod (2) are identical in structure and adopt a push rod structure;
the push rod structure comprises a force application rod, a connecting body and two round dowel bars; one end of the force application rod is used for being connected with the main body frame structure; the other end of the force application rod is connected with one side of the connecting body; two circular dowel bars parallel arrangement, the one end of circular dowel bar with the opposite side of connector links to each other, the other end of circular dowel bar be used for with the reset unit contact.
10. A self-resetting one-way friction energy consumption device according to claim 1, characterized in that said casing comprises a middle casing (7), a first outer casing (16) and a second outer casing (17);
the first outer protecting tube (16) is detachably fixed at one end of the middle protecting tube (7), and the second outer protecting tube (17) is detachably fixed at the other end of the middle protecting tube (7); the middle protective cylinder (7), the first outer protective cylinder (16) and the second outer protective cylinder (17) are combined to form a hollow cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210860247.5A CN115075418A (en) | 2022-07-21 | 2022-07-21 | Self-resetting one-way friction energy dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210860247.5A CN115075418A (en) | 2022-07-21 | 2022-07-21 | Self-resetting one-way friction energy dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115075418A true CN115075418A (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210860247.5A Pending CN115075418A (en) | 2022-07-21 | 2022-07-21 | Self-resetting one-way friction energy dissipation device |
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