CN106286669B - A kind of coiled spring damper that early stage rigidity is predeterminable - Google Patents
A kind of coiled spring damper that early stage rigidity is predeterminable Download PDFInfo
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- CN106286669B CN106286669B CN201610902626.0A CN201610902626A CN106286669B CN 106286669 B CN106286669 B CN 106286669B CN 201610902626 A CN201610902626 A CN 201610902626A CN 106286669 B CN106286669 B CN 106286669B
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- 238000007667 floating Methods 0.000 claims abstract description 56
- 230000006835 compression Effects 0.000 claims abstract description 39
- 238000007906 compression Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 105
- 239000010959 steel Substances 0.000 claims description 105
- 238000003825 pressing Methods 0.000 claims description 51
- 206010052904 Musculoskeletal stiffness Diseases 0.000 claims description 23
- 208000002740 Muscle Rigidity Diseases 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/123—Attachments or mountings characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of coiled spring dampers that early stage rigidity is predeterminable, it is characterized in that, it is additionally provided with backpressure device between the two end plates of the damper, the backpressure device includes quantity at least three two groups of precompressed cable wires and two pieces of floating platens respectively, wherein, two pieces of floating platens are respectively sleeved on one piece of guide rod between end plate and cylindrical helical compression spring；Two groups of precompressed cable wires are symmetrically distributed in linear state the surrounding of the cylindrical helical compression spring rotating around the axis of guide rod, and, one of each group of precompressed cable wire is separately fixed on one piece of floating platen, and other end is each passed through another piece of floating platen and is fixed on the end plate adjacent with the floating platen；Tensioning two groups of precompressed cable wires, cylindrical helical compression spring are clamped in always between two pieces of floating platens.
Description
Technical Field
The present invention relates to a shock absorbing device, and more particularly, to a damper using a cylindrical helical compression spring.
Background
A damper is a shock absorbing device that dissipates energy of motion by providing resistance to motion. The utilization of dampers to dissipate energy and reduce vibration is a traditional technology widely applied to the industries of aerospace, aviation, war industry, guns, automobiles and the like. Since the seventies of the twentieth century, people have gradually applied the energy dissipation and shock absorption technology by using dampers to structural engineering such as buildings, bridges, railways and the like. The spiral spring damper is widely applied to anti-seismic structures of various buildings due to the characteristics of high impact resistance, low cost and good shock absorption effect.
People pursue a comprehensive anti-seismic performance combining 'resistance' and 'consumption' for the design of anti-seismic structures of buildings, particularly high-rise buildings, namely the anti-seismic structures can provide extra additional rigidity for a building main body to resist the action of external loads under the action of weak wind vibration and small earthquakes, the integrity of the main body structure is maintained, the internal damage of the main body structure is avoided, the anti-seismic structures begin to yield and deform under the action of strong wind vibration and large earthquakes, the external energy is dissipated through the damping action of a damper in the anti-seismic structures, the main body structure is prevented from being seriously damaged or even collapsing in strong wind vibration and large earthquakes, and the life and property safety of people is ensured. The requirement is that the anti-seismic structure can keep rigidity and does not deform under the action of external weak load; the energy can be dissipated by deformation under the action of external strong load. However, the existing spring damper cannot meet the requirement of shock resistance, and any spring damper can generate more or less elastic deformation under the action of external load. The performance of the above-mentioned seismic structure of buildings is difficult to achieve.
The utility model discloses a utility model patent application with grant publication number CN 204081122U discloses a wind-resistant shock attenuation spring damper for building, this damper with two elastomers (be two coil spring) respectively rigid coupling in the uide bushing on the epaxial middle restriction subassembly of center, when the damper is drawn or is compressed, one of them elastomer is drawn, another elastomer is compressed to realize the wind-resistant shock attenuation. However, the utility model patent obviously has the following disadvantages: 1. two spiral springs are needed, the whole damper is long, and the damper is not suitable for being installed in a space with a small distance; 2. in the process, the equal rigidity (including the tensile rigidity and the compression rigidity) of the two springs is difficult or even impossible to ensure, so that the damping effects are different when the wind directions are different; 3. the early rigidity of the damper cannot be changed, and the aims of presetting the wind resistance level and reducing the damping cost are fulfilled; 4. one helical spring works in two states of stretching and compressing simultaneously, the metal material and the production process of the existing spring are difficult to meet the requirements, and the two working states of stretching and compressing can be realized only by reducing the elastic deformation range of the helical spring, which obviously causes resource waste.
The patent application with the publication number of CN 102409777A discloses a structural three-dimensional shock isolation and anti-overturning device, which comprises a laminated rubber shock isolation support and a spring shock isolation support which is arranged at the lower part of the laminated rubber shock isolation support and consists of a spiral compression spring, wherein the spring shock isolation support is mainly used for isolating vertical seismic waves; however, vertical seismic waves are bidirectional, and the spring shock-insulation support in the invention can only be compressed, deformed and consumed energy; the device is therefore unable to isolate the negative going waves that move instantaneously downwards from the earth's surface in an earthquake. In addition, the device still has the rigidity that can't change the attenuator, reaches preset antidetonation intensity, reduces the purpose of shock attenuation cost.
The invention patent application with the publication number of CN101457553A discloses a tuned mass damper with adjustable spring stiffness, which is a composite damper, the characteristic frequency of the damper is changed by changing the thickness of a mass block, the damping ratio of the damper is changed by changing the flow of a working medium of the viscous damper, and the stiffness of the damper is changed by changing the effective working length of a spring, wherein three means are adopted for changing the effective working length of the spring, firstly, a section of the spring positioned in a curing cylinder is cured by adopting a curing material, secondly, a constraint block is plugged into a central hole of a spiral spring, the constraint block and the spring are in interference fit, so that a section of the spring contacted with the constraint block fails, thirdly, a spiral bulge is arranged on the surface of the constraint block, the spiral bulge is clamped between spring wires, and a section of the spring clamped with the spiral bulge between the spring wires fails. It can be seen that although the spring in the patent application can change the stiffness, the effective working length of the spring is obviously shortened, and the spring can only compress energy consumption and reduce vibration but cannot stretch the energy consumption and reduce vibration. In addition, the rigidity of the spring is changed by changing the effective working length of the spring, the adjusting range is limited by the material and shape of the spring, and the adjusting range is very limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing a spiral spring damper with predesigned early rigidity, which not only keeps the effective working length of a spiral spring, but also can compress and stretch energy dissipation and vibration reduction.
The technical scheme for solving the technical problems is as follows:
a spiral spring damper with predefinable early rigidity comprises two end plates, wherein a cylindrical spiral compression spring is arranged between the two end plates, one end plate is provided with a guide rod, and the guide rod penetrates out of the other end plate along the central hole of the cylindrical spiral compression spring; it is characterized in that the preparation method is characterized in that,
a back pressure device is arranged between the two end plates and comprises two groups of prepressing steel cables with at least three and two floating pressure plates respectively,
the two floating pressure plates are respectively sleeved on the guide rod between one end plate and the cylindrical spiral compression spring;
the two groups of prepressing steel cables are respectively and symmetrically distributed around the cylindrical spiral compression spring in a linear state around the axis of the guide rod, one end of each group of prepressing steel cables is respectively fixed on one floating pressing plate, and the other end of each group of prepressing steel cables respectively penetrates through the other floating pressing plate and is fixed on an end plate adjacent to the floating pressing plate;
the floating pressing plate is provided with through holes penetrating the prepressing steel cable at the positions penetrating the prepressing steel cable respectively, and the aperture of each through hole is larger than the diameter of the penetrating prepressing steel cable;
and tensioning the two groups of pre-pressing steel cables to ensure that the distance between the two floating pressure plates is equal to the length of compressing the cylindrical spiral compression spring to preset early stiffness.
In the above scheme, the pre-pressed steel cable may be a steel cable or a pre-stressed steel strand.
The coil spring damper with the preset early stiffness is characterized in that two ends of the prepressing steel rope can be anchored by adopting a conventional method, and can also be tied and fixed by adopting a U-shaped component similar to a lifting ring screw or bent by a steel bar, so that if the two ends of the prepressing steel rope are both anchored or tied and fixed by the lifting ring screw, the preset tension can be obtained only by calculating in advance and strictly controlling the length of the prepressing steel rope to achieve the aim of presetting the early stiffness, and the aim of presetting the early stiffness is further achieved. However, in the actual production and debugging process, the method for controlling the length of the pre-pressed steel cable to achieve the purpose of presetting the early stiffness has two problems that firstly, errors are generated in the welding or tying process, and secondly, even if the errors generated in the welding or tying process are controlled, the pre-pressed steel cable can also cause the change of characteristic parameters in the cutting and placing processes. In order to solve the technical problem, an improved scheme of the invention is as follows:
the other end of each group of prepressing steel cables is respectively fixed on the corresponding end plate by a steel cable self-locking anchorage device; the steel cable self-locking anchorage device consists of a mounting hole, a clamping jaw and a check bolt, wherein,
the mounting hole is formed in the end plate adjacent to the floating pressure plate; the mounting hole consists of a section of taper hole and a section of threaded hole, wherein the taper hole is positioned at one side close to the floating pressure plate, the pointed end points to the floating pressure plate, and the threaded hole is positioned at one side far away from the floating pressure plate;
the clamping jaw is conical and matched with the taper hole, and consists of 3-5 petals, and a clamping hole for clamping the prepressing steel cable is formed in the clamping jaw along the axis;
the check bolt is matched with the threaded hole, and a round hole with the diameter larger than that of the prepressing steel cable is arranged in the body along the axis;
the clamping jaw is installed in the taper hole, and the anti-loosening bolt is installed in the threaded hole.
According to the improved scheme, one end of the prepressing steel cable is fixed on one floating pressing plate, the other end of the prepressing steel cable penetrates through the other floating pressing plate and penetrates out of the clamping hole and the round hole of the steel cable self-locking anchorage device, so that the exposed rope end can be tied on a traction tensioning machine, and the distance between the two floating pressing plates is monitored while traction tensioning is carried out; when the distance between the two floating pressing plates is equal to the length of compressing the cylindrical spiral compression spring to meet the early rigidity, the locking bolt is screwed to push the clamping jaw to clamp and lock the pre-pressed steel cable, and the pre-pressed steel cable cannot be loosened even if the two groups of pre-pressed steel cables are repeatedly tensioned and loosened in the vibration process.
The damper can be widely applied to various one-dimensional shock insulation fields, such as isolation of internal vibration of mechanical equipment, shock insulation of equipment foundations, shock resistance reinforcement of building structures, shock insulation of building foundations and the like.
The damper has the following beneficial effects:
(1) the cylindrical spiral compression spring can generate elastic compression deformation to consume energy no matter the damper is subjected to positive or reverse axial external force only by the cylindrical spiral compression spring, so that one spring is saved, and the length of the damper is greatly shortened.
(2) When the dynamic load is larger than the early rigidity resisting capacity of the damper, the bidirectional elastic deformation is symmetrical, so that the compression deformation and energy consumption effects of the external force load are not influenced by the positive and negative direction changes of the external force load.
(3) The early stiffness of the whole damper can be changed by changing the length of the prepressing steel cable, and when the early stiffness is larger than zero, the damper cannot be deformed by external force before overcoming the early stiffness, so that when the damper is used for building structure earthquake resistance, the earthquake fortification grade can be preset, and the earthquake insulation cost is obviously reduced.
(4) The early stiffness of the damper can be preset by presetting the length of the prepressing steel cable, the effective working length is unchanged without one circle of failure of the cylindrical spiral compression spring, and the original characteristic parameters of the cylindrical spiral compression spring cannot be changed.
Drawings
Fig. 1 to 6 are schematic structural views of an embodiment of a damper according to the present invention, in which fig. 1 is a front view (cross-sectional view), fig. 2 is a cross-sectional view a-a of fig. 1, fig. 3 is a cross-sectional view B-B of fig. 1, fig. 4 is a bottom view, fig. 5 is an enlarged view of a portion i of fig. 1, and fig. 6 is an enlarged view of a portion ii of fig. 2.
Fig. 7 to 12 are schematic structural views of a second embodiment of a damper according to the present invention, in which fig. 7 is a front view (cross-sectional view), fig. 8 is a cross-sectional view from C to C of fig. 7, fig. 9 is a cross-sectional view from D to D of fig. 7, fig. 10 is a bottom view, fig. 11 is an enlarged view of a portion iii of fig. 7, and fig. 12 is an enlarged view of a portion iv of fig. 8; for the convenience of observation, the protective sleeves are hidden in the figures 8-9.
Fig. 13 to 15 are schematic structural views of the steel cable self-locking anchor device in the embodiment shown in fig. 7 to 12, in which fig. 13 is a front view (a cross-sectional view, in which a two-dot chain line indicates a pre-stressed steel cable), fig. 14 is a top view, and fig. 15 is a cross-sectional view E-E of fig. 13.
FIGS. 16 to 18 are schematic structural views of a third embodiment of a damper according to the present invention, wherein FIG. 16 is a front view (sectional view), FIG. 17 is a sectional view taken along line F-F of FIG. 16, and FIG. 18 is a sectional view taken along line G-G of FIG. 16; for the convenience of observation, the protective sleeves are hidden in fig. 17-18.
Detailed Description
Example 1
Referring to fig. 1 and 4, the coil spring damper with a predefinable early stiffness in this example is a damper for earthquake-proof reinforcement of a building structure, and includes a disc-shaped upper end plate 2 and a lower end plate 3, a cylindrical coil compression spring 4 is disposed between the upper end plate and the lower end plate, wherein a guide rod 1 is disposed on the upper end plate 2, and the guide rod 4 penetrates through the lower end plate 3 downwards along a central hole of the cylindrical coil compression spring 4; the lower end plate 3 is movably matched with the guide rod 1.
Referring to fig. 1 and 4, the upper surface of the upper end plate 2 and the lower surface of the lower end plate 3 are respectively provided with two connection ear plates 11 having hinge holes 12. And the distance between the hinge holes 12 on the connecting ear plate 11 arranged on the lower end plate 3 and the lower end plate 3 is larger than the length of the end part of the guide rod 1 penetrating through the lower surface of the lower end plate 3, and a movable space for the end part of the guide rod 1 to stretch is formed between the two hinge holes 12 and the lower surface of the lower end plate 3.
Referring to fig. 1 to 6, a back pressure device is arranged between the upper end plate 2 and the lower end plate 3, and comprises two groups of prepressing steel cables and two floating pressure plates; the two groups of pre-pressing steel cables are a first group of pre-pressing steel cables 8 consisting of five pre-pressing steel cables and a second group of pre-pressing steel cables 7 consisting of three pre-pressing steel cables; the two floating pressing plates are a first floating pressing plate 6 sleeved on the guide rod between the lower end plate 3 and the cylindrical spiral compression spring 4 and a second floating pressing plate 5 sleeved on the guide rod between the upper end plate 2 and the cylindrical spiral compression spring 4.
Referring to fig. 1 to 6, the two sets of pre-pressing steel cables are respectively and symmetrically distributed around the cylindrical helical compression spring 4 in a linear state around the axis of the guide rod 1, each pre-pressing steel cable is parallel to the axis of the guide rod 1, and the distance from the first set of pre-pressing steel cables 8 to the axis of the guide rod is equal to the distance from the second set of pre-pressing steel cables 7 to the axis of the guide rod; the upper ends of the first group of prepressing steel cables 8 are respectively fixed on the second floating pressing plate 5 through lifting bolts 13, and the lower ends of the first group of prepressing steel cables respectively penetrate through the first floating pressing plate 6 and are fixed on the lower end plate 3 through the lifting bolts 13; the lower ends of the second group of prepressing steel cables 7 are respectively fixed on the first floating pressing plate 6 by lifting ring screws 13, and the upper ends of the second group of prepressing steel cables pass through the second floating pressing plate 5 and are fixed on the upper end plate 2 by the lifting ring screws 13; a first through hole 10 for each first group of pre-pressing steel cables 8 to pass through is formed in the position, through which each first group of pre-pressing steel cables 8 passes, of the first floating pressing plate 6, and the diameter of the first through hole 10 is larger than that of the first group of pre-pressing steel cables 8; a second through hole 9 for each second set of pre-pressed steel cables 7 to pass through is formed in the position, through which each second set of pre-pressed steel cables 7 passes, on the second floating pressing plate 5, and the aperture of each second through hole 9 is larger than the diameter of each second set of pre-pressed steel cables 7; the method for fixing the two ends of the prepressing steel cable on the corresponding components by the lifting ring screws comprises the following steps: the eye screw 13 is fixed to the corresponding component, and then one end of the pre-pressed steel cable is tied to the eye of the eye screw and is fixed by a steel cable clamp (not shown in the figure).
The pre-stressed steel cable in the embodiment can be a steel wire rope or a pre-stressed steel strand, and can be selected according to actual requirements during specific implementation.
In order to achieve the purpose of presetting the early stiffness, the installation and tensioning method of the two groups of pre-pressed steel ropes is as follows: (1) all the other components except the two groups of pre-pressed steel cables in the damper group are assembled according to the figures 1 to 6; (2) applying pressure to two ends of the damper obtained in the step (1) to compress the cylindrical helical compression spring 4 to a length which meets the early stiffness (the length can be obtained by calculating the elastic coefficient of the cylindrical helical compression spring 4 and the early stiffness which needs to be preset); (3) both ends of each pre-pressed steel cable are tied to the corresponding eyebolts 13 by a common steel cable clamp (not shown), so that each pre-pressed steel cable is tensioned, and then the pressure applied in the step (2) is removed, and the cylindrical helical compression spring 4 is always clamped between the first floating pressing plate 6 and the second floating pressing plate 5 by the two sets of pre-pressed steel cables.
Referring to fig. 1, the two sets of pre-pressing steel cables respectively pull the two floating pressing plates to compress the cylindrical helical compression springs 4 to provide pre-pressing force, and the pre-pressing force can be changed by changing the lengths of the pre-pressing steel cables, so as to achieve the purpose of presetting the stiffness of the pre-pressing steel cables. Referring to fig. 1, when the damper is subjected to an external load in the axial direction, the cylindrical helical compression spring 4 does not continue to deform regardless of whether the external load is a compressive force or a tensile force as long as it is smaller than the above-mentioned pre-pressure. When the external load is greater than the pre-pressure, if the external load is pressure, the lower end plate 3 pushes the first floating pressing plate 6 to continue to compress the cylindrical helical compression spring 4 to generate elastic deformation energy consumption, and if the external load is tension, the two groups of pre-pressing steel cables respectively pull the two floating pressing plates to move relatively to compress the cylindrical helical compression spring 4 to generate elastic deformation energy consumption. Because the finally generated deformation is the compression deformation of the same spring no matter the dynamic load borne by the damper is tension or pressure, the bidirectional elastic deformation of the damper is necessarily symmetrical.
Example 2
Referring to fig. 7 to 10, the first set of pre-pressed steel cables 8 and the second set of pre-pressed steel cables 7 are composed of three pre-pressed steel cables.
Referring to fig. 7 to 12, the lower head of the first set of pre-pressed steel cables 8 and the upper head of the second set of pre-pressed steel cables 7 are respectively fixed on the lower end plate 3 and the upper end plate 2 by using a steel cable self-locking anchorage 14 instead of the lifting bolt in example 1. In order to prevent dust and other impurities from falling onto the cylindrical spiral compression spring 4 to influence the normal operation of the damper, a rubber protective sleeve 15 is wrapped on the outer side of the back pressure device, and two ends of the protective sleeve 15 are respectively bonded with the outer peripheral surfaces of the first floating pressure plate 6 and the second floating pressure plate 5. The length of the sheath 15 is larger than the distance between the upper surface of the upper end plate 2 and the lower surface of the lower end plate 3, so as not to influence the operation of the damper.
Referring to fig. 13 to 15 in combination with fig. 7, the steel cable self-locking anchorage 14 is composed of a mounting hole provided on a mounting plate 14-1, a clamping jaw 14-2 and a locking bolt 14-4, wherein the mounting plate 14-1 is the lower end plate 3 or the upper end plate 2. The axis of the mounting hole is collinear with the straight line where the corresponding pre-pressing steel cable is located; the mounting hole comprises a section of taper hole and a threaded hole, wherein the taper hole is positioned at one side close to the floating pressure plate, the pointed end points to the floating pressure plate, and the threaded hole is positioned at the other side far away from the floating pressure plate. The clamping jaw 14-2 is conical matched with the taper hole and consists of 3 petals, and a clamping hole 14-3 for clamping a corresponding prepressing steel cable is arranged in the body along the axis. The check bolt 14-4 is matched with the threaded hole, and a round hole 14-5 with the diameter larger than that of the corresponding prepressing steel cable is arranged in the body along the axis. The clamping jaw 14-2 is arranged in the taper hole, and the anti-loose bolt 14-4 is arranged in the threaded hole; the other end of the corresponding prepressing steel cable is clamped in the clamping hole 14-3, and the tail end of the prepressing steel cable penetrates out of the round hole 14-5 of the corresponding check bolt 14-4.
After the damper is manufactured and assembled according to the scheme of the embodiment, the rope ends of the exposed first group of prepressing steel ropes 8 and the second group of prepressing steel ropes 7 are tied on a traction tensioning machine, and the distance between the two floating press plates is monitored while traction tensioning is carried out; when the distance between the two floating pressing plates is equal to the length of compressing the cylindrical spiral compression spring 4 to meet the early rigidity, the locking bolt 14-4 is screwed to push the clamping jaw 14-2 to clamp and lock the pre-pressed steel cable, so that the cylindrical spiral compression spring 4 is always clamped between the first floating pressing plate 6 and the second floating pressing plate 5.
The method of carrying out the present embodiment other than the above is the same as that of example 1.
Example 3
Referring to fig. 16 to 18, the early-stage coil spring damper in this embodiment is a vibration isolation device (also called vibration isolation support) for isolating the building from the vertical vibration, and the present embodiment mainly has the following differences compared with example 2:
1. as a vibration isolation support, for the convenience of installation, a connecting lug plate arranged on the upper end plate 2 is omitted in the embodiment, the edge of the upper end plate 2 extends upwards and axially and then radially outwards, and connecting bolt holes 16 are uniformly arranged at the edge; wherein, the length of the upward axial extension is required to be larger than the length of the steel cable self-locking anchorage 14 exposed out of the outer part of the upper end plate 2.
2. The connecting lug plate arranged on the outer side of the lower end plate 3 is omitted, the lower end plate 3 extends downwards axially from the edge and then extends outwards radially to form a base of the damper, and connecting bolt holes 16 are uniformly arranged on the edge; wherein the length of the downward axial extension is larger than the length of the end part of the guide rod 1 penetrating out of the outer side of the lower end plate 3 and the length of the steel cable self-locking anchorage 14 exposed out of the outer side part of the lower end plate 3 so as to form a movable space 17 for the end part of the guide rod 1 to stretch.
3. The first group of prepressing steel cables 8 and the second group of prepressing steel cables 7 are respectively composed of five prepressing steel cables.
Other embodiments than the above-described embodiment are the same as embodiment 2.
Claims (5)
1. A spiral spring damper with predefinable early rigidity comprises two end plates, wherein a cylindrical spiral compression spring is arranged between the two end plates, one end plate is provided with a guide rod, and the guide rod penetrates out of the other end plate along the central hole of the cylindrical spiral compression spring; it is characterized in that the preparation method is characterized in that,
a back pressure device is also arranged between the two end plates and comprises two groups of prepressing steel cables and two floating pressure plates, wherein the number of the prepressing steel cables in each group is at least three; wherein,
the two floating pressure plates are respectively sleeved on the guide rod between one end plate and the cylindrical spiral compression spring;
the two groups of prepressing steel cables are respectively and symmetrically distributed around the cylindrical spiral compression spring in a linear state around the axis of the guide rod, one end of each group of prepressing steel cables is respectively fixed on one floating pressing plate, and the other end of each group of prepressing steel cables respectively penetrates through the other floating pressing plate and is fixed on an end plate adjacent to the floating pressing plate;
the floating pressing plate is provided with through holes penetrating the prepressing steel cable at the positions penetrating the prepressing steel cable respectively, and the aperture of each through hole is larger than the diameter of the penetrating prepressing steel cable;
and tensioning the two groups of pre-pressing steel cables to ensure that the distance between the two floating pressure plates is equal to the length of compressing the cylindrical spiral compression spring to preset early stiffness.
2. An early pre-settable coil spring damper according to claim 1, wherein the early pre-settable coil spring damper is a damper for seismic reinforcement of a building structure.
3. The coil spring damper with the predefinable early stiffness as claimed in claim 1, wherein the coil spring damper with the predefinable early stiffness is a vertical seismic isolation device for earthquake resistance of buildings.
4. The coil spring damper with predefinable early stiffness as claimed in claim 1, 2 or 3, wherein the pre-stressed steel cable is a steel cable or a pre-stressed steel strand.
5. The coil spring damper with predefinable early stiffness as claimed in claim 4, wherein the other end of each set of pre-stressed steel cables is fixed on the corresponding end plate by a steel cable self-locking anchorage respectively; the steel cable self-locking anchorage device consists of a mounting hole, a clamping jaw and a check bolt, wherein,
the mounting hole is formed in the end plate adjacent to the floating pressure plate; the mounting hole consists of a section of taper hole and a section of threaded hole, wherein the taper hole is positioned at one side close to the floating pressure plate, the pointed end points to the floating pressure plate, and the threaded hole is positioned at one side far away from the floating pressure plate;
the clamping jaw is conical and matched with the taper hole, and consists of 3-5 petals, and a clamping hole for clamping the prepressing steel cable is formed in the clamping jaw along the axis;
the check bolt is matched with the threaded hole, and a round hole with the diameter larger than that of the prepressing steel cable is arranged in the body along the axis;
the clamping jaw is installed in the taper hole, and the anti-loosening bolt is installed in the threaded hole.
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| CN201610902626.0A CN106286669B (en) | 2016-10-17 | 2016-10-17 | A kind of coiled spring damper that early stage rigidity is predeterminable |
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| CN201610902626.0A CN106286669B (en) | 2016-10-17 | 2016-10-17 | A kind of coiled spring damper that early stage rigidity is predeterminable |
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| CN106286669A CN106286669A (en) | 2017-01-04 |
| CN106286669B true CN106286669B (en) | 2018-07-20 |
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| CN114737710B (en) * | 2022-04-22 | 2024-09-06 | 红蚂蚁装饰股份有限公司 | Damping accessory for suspended ceiling bolt |
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|---|---|---|---|---|
| US5120277A (en) * | 1989-07-06 | 1992-06-09 | Hutchinson | Tensioner for a transmission belt |
| CN1932324A (en) * | 2006-10-09 | 2007-03-21 | 毛学军 | Adjustable disc-shape spring mechanical vibration reducing damper |
| CN101457553A (en) * | 2007-12-14 | 2009-06-17 | 尹学军 | Spring stiffness adjustable tuning quality damper |
| CN102401053A (en) * | 2010-09-15 | 2012-04-04 | 溧阳市振大铁路设备有限公司 | Composite spring for train bogie |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6033591B2 (en) * | 2012-07-02 | 2016-11-30 | 特許機器株式会社 | Seismic reduction device |
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2016
- 2016-10-17 CN CN201610902626.0A patent/CN106286669B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5120277A (en) * | 1989-07-06 | 1992-06-09 | Hutchinson | Tensioner for a transmission belt |
| CN1932324A (en) * | 2006-10-09 | 2007-03-21 | 毛学军 | Adjustable disc-shape spring mechanical vibration reducing damper |
| CN101457553A (en) * | 2007-12-14 | 2009-06-17 | 尹学军 | Spring stiffness adjustable tuning quality damper |
| CN102401053A (en) * | 2010-09-15 | 2012-04-04 | 溧阳市振大铁路设备有限公司 | Composite spring for train bogie |
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| CN106286669A (en) | 2017-01-04 |
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Effective date of registration: 20191225 Address after: Room 1,020, Nanxun Science and Technology Pioneering Park, No. 666 Chaoyang Road, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee after: Huzhou You Yan Intellectual Property Service Co., Ltd. Address before: 104 6 Building 327, Mingguang Road, Yaohai District, Anhui, Hefei 230011, China Patentee before: Anhui Xinze Technology Co. Ltd. |