CN106436954A - Disc spring damper with presettable initial stiffness - Google Patents
Disc spring damper with presettable initial stiffness Download PDFInfo
- Publication number
- CN106436954A CN106436954A CN201610905964.XA CN201610905964A CN106436954A CN 106436954 A CN106436954 A CN 106436954A CN 201610905964 A CN201610905964 A CN 201610905964A CN 106436954 A CN106436954 A CN 106436954A
- Authority
- CN
- China
- Prior art keywords
- wire rope
- steel wire
- disc spring
- guide sleeve
- steel plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 176
- 239000010959 steel Substances 0.000 claims abstract description 176
- 238000007667 floating Methods 0.000 claims abstract description 53
- 238000002955 isolation Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 29
- 238000000034 method Methods 0.000 description 10
- 230000035939 shock Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000013016 damping Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a disc spring damper with presettable initial stiffness, characterized in that a counter pressure device is disposed in a guide sleeve and comprises more than three prestressed wire ropes, wire rope reversing elements as many as the prestressed wire ropes, and a floating counter pressure steel plate, wherein the prestressed wire ropes are distributed in a center hole of a disc spring set in a broken line form, one end of each prestressed wire rope is fixed symmetrically around the axis of the guide sleeve to the floating counter pressure steel plate, and the other end of each prestressed wire rope is passed through the opposite wire rope reversing element and returned and is then passed through the floating counter pressure steel plate beside a fixation point thereof on the floating counter pressure steel plate and fixed to a second end cover; the prestressed wire ropes are tensioned to tension required by preset initial stiffness, such that the disc spring set is clamped constantly between a drive member and the floating counter pressure steel plate.
Description
Technical Field
The invention relates to a building anti-vibration device, in particular to a damping device comprising a disc spring.
Background
A damper is a device that dissipates energy from motion in a manner that provides resistance to motion. From the twenty-century and the seventies, the damper is gradually transferred to structural engineering such as buildings, bridges, railways and the like from industries such as aerospace, aviation, war industry, firearms, automobiles and the like. The disk spring is widely applied to shock insulation and absorption devices in various heavy-load occasions due to the characteristics of large bearing capacity, strong buffering and absorption capacity and wide range of nonlinearity. The disc spring is usually combined into a disc spring group by a plurality of discs, and the use effects of different combination modes are different; however, the disc spring assembly formed by any mode can only be compressed and deformed. Therefore, existing dampers for resisting wind and earthquakes use at least two sets of disc springs, or are compounded with other types of dampers (e.g., viscoelastic dampers). However, this approach using multiple sets of belleville springs or combinations with other types of dampers creates many negative problems, such as: 1. the damping characteristics of stretching and compression of the damper are asymmetric, so that the shock insulation and absorption effects are influenced; 2. the volume is large, and the installation cannot be carried out in a narrow space; 3. the structure is complex, the production is difficult, and the cost is high; and so on.
The action of seismic waves is multidirectional and random, namely, the magnitude direction and the frequency of force acting on a building are random, so that the damper for resisting earthquake needs to meet the following two requirements: the characteristic frequency of the damper needs to be staggered with the resonance frequency domain of earthquake input excitation, and the characteristic frequency of the damper needs to be staggered with the characteristic frequency of a building or a building structure. According to the theoretical analysis of the author's easy loyalty of the ' basic characteristic parameter analysis of the disc spring ', the natural frequency of the single disc spring(in the formula, KpFor stiffness, msFor the mass of the Belleville spring, m is the mass of the body to which the Belleville spring is attached, ξ is the equivalent mass conversion factor [ see journal of Petroleum machinery, 23, vol. 23, pp. 3, 10 to 22, 1995]It can be seen that when the mass of the belleville spring and the mass of the object connected with the belleville spring are determined by design, the square of the natural frequency of the belleville spring is proportional to the stiffness of the belleville spring.
The invention patent application with the publication number of CN1932324A discloses an adjustable disc spring mechanical shock absorption damper, which comprises a shell, a load connecting rod and two groups of disc springs, wherein the load connecting rod and the two groups of disc springs are arranged in the shell, the middle part of the load connecting rod is provided with an adjusting gear fixedly connected with the load connecting rod, the load connecting rods on the two sides of the adjusting gear are respectively provided with a left-handed nut and a right-handed nut which are in threaded fit with the load connecting rod, and the two groups of disc springs are respectively arranged on the outer sides of the left-handed nut and the right-handed nut and are respectively clamped between the left-handed nut or the right-handed nut and a sealing plate at the. The damping coefficient of the damper can be adjusted by only turning the adjusting gear on the load connecting rod to enable the left-handed nut and the right-handed nut to be close to or far away from each other, so that the pretightening force of the two groups of disk springs can be adjusted, and the use requirements of different frequencies and different amplitudes are met. However, the invention still has the following disadvantages:
1. the load connecting rod is kept in balance under the combined action of the two groups of disc springs, although the pretightening force of the two groups of disc springs can be adjusted, no matter how the pretightening force is adjusted, the acting forces of the two groups of disc springs on the load connecting rod are equal in one group, and opposite in direction, and the balance can be damaged only by applying any external force on the load connecting rod, so that the two groups of disc springs deform, and the damper cannot preset initial rigidity;
2. the damper is provided with two groups of disc springs which are matched with each other, so that the damper can provide damping when the damper is subjected to pressure or tensile load, certain waste is caused, the length of the damper is greatly increased, and the damper is not suitable for occasions with compact installation space.
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 inserted into the center of a spiral spring and is in interference fit with the spring, 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, and the spiral bulge is clamped between spring wires, so that 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.
Disclosure of Invention
The invention aims to solve the technical problem of providing a disc spring damper with preset initial stiffness, which not only keeps the effective working length of a disc spring group, but also can compress and stretch energy dissipation and vibration reduction.
The technical scheme for solving the technical problems is as follows:
a disc spring damper capable of presetting initial stiffness comprises a guide sleeve, wherein one end of the guide sleeve is provided with a first end cover, the other end of the guide sleeve is provided with a second end cover, and a disc spring group is coaxially arranged inside the guide sleeve; a driving component extends into the guide sleeve from the center of the first end cover and acts on the disc spring group, wherein the disc spring group is formed by overlapping a group of disc springs; it is characterized in that the preparation method is characterized in that,
the guide sleeve is also internally provided with a back pressure device which comprises more than three pre-pressed steel wire ropes, steel wire rope turning elements with the same number as the pre-pressed steel wire ropes and a floating back pressure steel plate, wherein,
the floating back pressure steel plate is arranged between the disc spring set and the second end cover;
the steel wire rope direction changing element is symmetrically fixed on the driving component around the axis of the guide sleeve;
the prepressing steel wire ropes are distributed in the central holes of the disc spring groups in a broken line state, one end of each prepressing steel wire rope is symmetrically fixed on the floating back pressure steel plate around the axis of the guide sleeve, the other end of each prepressing steel wire rope passes through the opposite steel wire rope turning element and then turns back, and then the prepressing steel wire rope passes through the floating back pressure steel plate beside the fixed point of the prepressing steel wire rope on the floating back pressure steel plate and is fixed on the second end cover;
on the floating back pressure steel plate, a through hole for penetrating the pre-pressed steel wire rope is arranged at the penetrating position of each pre-pressed steel wire rope, and the aperture of the through hole is larger than the diameter of the pre-pressed steel wire rope;
and tensioning the pre-pressed steel wire rope to a tension required by the preset initial rigidity, so that the disc spring group is always clamped between the driving member and the floating back pressure steel plate.
The working principle of the damper is as follows: when the dynamic load is relatively acted along the axis of the guide sleeve, the driving member compresses the disc spring group downwards; when the dynamic load acts along the axis of the guide sleeve in a reverse direction, the prepressing steel wire rope reversely lifts the floating counter-pressure steel plate through the steel wire rope direction changing element to compress the disc-shaped spring group. Therefore, the axial dynamic load can compress the disc spring group to cause the disc spring group to generate elastic deformation and consume energy no matter the disc spring group is oppositely or reversely acted on the damper.
According to the working principle, the prepressing steel wire rope and the hole wall of the through hole in the floating back pressure steel plate cannot generate friction in the working process, otherwise, the up-and-down movement of the floating back pressure steel plate is interfered, so that the diameter of the through hole is larger than that of the prepressing steel wire rope, and the up-and-down movement of the floating back pressure steel plate is preferably not interfered and influenced.
In the above scheme, the wire rope direction changing element is a common fixed pulley or a hoisting ring-shaped member with a direction changing function similar to that of the common fixed pulley, such as a hoisting ring screw, a U-shaped member and the like.
According to the disc spring damper capable of presetting initial stiffness, two ends of the prepressing steel wire rope can be fixed by welding or can be tied and fixed by similar lifting ring screws, however, if the two ends are fixed by welding or the lifting ring screws, the tension can be preset only by calculating in advance and strictly controlling the length of the prepressing steel wire rope to achieve the purpose of presetting the initial stiffness, and further the purpose of presetting the initial stiffness is achieved. However, in the actual production and debugging process, the purpose of presetting the initial stiffness by adopting the method for controlling the length of the pre-pressed steel wire rope has two major problems, namely, errors are generated in the welding or tying process, and even if the errors generated in the welding or tying process are controlled, the steel wire rope 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 the prepressing steel wire rope is fixed on the second end cover by a steel wire rope self-locking anchorage device; the steel wire rope self-locking anchorage device consists of a mounting hole, a clamping jaw and a check bolt, wherein,
the mounting hole is formed in the second end cover; 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 guide sleeve, the pointed end points into the guide sleeve, and the threaded hole is positioned at the other side far away from the guide sleeve;
the clamping jaw is conical and matched with the taper hole, and consists of 3-5 petals, and a clamping hole for clamping and prepressing the steel wire rope is formed in the clamping jaw along the axis;
the anti-loosening bolt is matched with the threaded hole, and a round hole with the diameter larger than that of the corresponding prepressing steel wire rope is arranged in the anti-loosening bolt along the axis;
the clamping jaw is installed in the taper hole, and the anti-loosening bolt is installed in the threaded hole.
It can be seen from the above improved scheme that one end of each prepressing steel wire rope is fixed on the floating counter-pressure plate, and the other end of each prepressing steel wire rope penetrates through the clamping hole and the round hole of the steel wire rope self-locking anchorage device, so that the exposed rope end can be tied on a traction tensioning machine, and tension is monitored by adopting a tension detector while traction tensioning is carried out. When the pre-pressing steel wire rope is tensioned to the tension required by the preset initial rigidity, the anti-loosening bolt is screwed to push the clamping jaw to clamp and lock the pre-pressing steel wire rope, and the pre-pressing steel wire rope cannot be loosened even in the repeated relaxation vibration process.
The damper can be widely applied to various one-dimensional fields, such as isolation of internal vibration of mechanical equipment, isolation of equipment foundation, seismic reinforcement of building structures, seismic resistance of large buildings and the like.
Compared with the prior art, the disc spring damper with the presettable initial stiffness has the following effects:
(1) external force is applied along the axis, and no matter the external force is pressure or tension, the disc spring group can generate elastic compression deformation to consume energy, so that the defect that the traditional disc spring damper can only compress, deform and consume energy is overcome;
(2) when the dynamic load is larger than the resisting capacity of the preset initial rigidity of the damper, the damper is symmetrical in two-way elastic deformation, so that the compression deformation energy consumption effect of the damper is not influenced by the change of the positive direction and the negative direction of the external load, and a convenient condition is provided for the reinforcement design of the building structure such as wind load resistance;
(3) the initial rigidity of the whole damper can be changed by only changing the length of the steel wire rope, and the damper cannot be deformed by external force before the initial rigidity is overcome, so that when the damper is used for vertical shock insulation of a building, the seismic intensity can be preset, and the shock insulation cost is obviously reduced;
(4) the two working states of stretching and compressing can be realized only by one group of disc springs, and the length of the damper is obviously shortened.
(5) In the process of presetting the initial stiffness, the effective working length of the disc spring set is unchanged, and the original characteristic parameters of the disc spring set cannot be changed.
(6) The characteristic frequency domain range of the damper is further selected, the inherent frequency domain range of the building structure and the frequency domain range of vertical seismic waves are avoided, and resonance is prevented.
Drawings
Fig. 1 to 5 are schematic structural views of an embodiment of a disc spring damper according to the present invention, in which fig. 1 is a front view (fig. 3C-C rotation section), fig. 2 is a sectional view a-a of fig. 1 (pre-stressed steel wire rope is omitted), fig. 3 is a sectional view B-B of fig. 1 (pre-stressed steel wire rope is omitted), fig. 4 is a structural enlarged view of a part i of fig. 1, and fig. 5 is a structural enlarged view of a part ii of fig. 1.
Fig. 6 to 11 are schematic structural views of a disc spring damper according to a second embodiment of the present invention, in which fig. 6 is a front view (cross section), fig. 7 is a cross section D-D of fig. 6 (with the pre-stressed wire rope omitted), fig. 8 is a cross section E-E of fig. 6 (with the pre-stressed wire rope omitted), fig. 9 is an enlarged cross section F-F of fig. 7, fig. 10 is an enlarged cross section of a portion iii of fig. 6, and fig. 11 is an enlarged cross section G-G of fig. 10.
Fig. 12 to 16 are schematic structural views of a disc spring damper according to a third embodiment of the present invention, in which fig. 12 is a front view (J-J rotation section of fig. 14), fig. 13 is a H-H cross section (with pre-stressed wire rope omitted) of fig. 12, fig. 14 is an I-I cross section (with pre-stressed wire rope omitted) of fig. 12, fig. 15 is a structural enlarged view of a part iv of fig. 12, and fig. 16 is a structural enlarged view of a part v of fig. 12.
Detailed Description
Example 1
Referring to fig. 1 to 5, the damper in this embodiment is a vertical seismic isolation device (also called a vertical seismic isolation support) for building seismic resistance, and includes a guide sleeve 1, a first end cover 2, a second end cover 3, a disc spring group 4, and a back pressure device.
Referring to fig. 1-3, the guide sleeve 1 is in a circular tube shape, the upper end of the guide sleeve is contracted inwards and radially to form a first end cover 2 with a guide hole in the center, and the lower end of the guide sleeve extends outwards and radially to form a flange 5. The second end cover 3 is disc-shaped, mounting holes 6 are formed in the peripheral edge, and the guide sleeve 1 is fixed in the middle of the upper surface of the guide sleeve through a flange 5 arranged at the lower end of the guide sleeve.
Referring to fig. 1 to 3, the driving member is composed of a movable platen 7 and an upper connecting plate 8, wherein the upper connecting plate 8 is disc-shaped, the edge of the upper connecting plate is provided with a mounting hole 6, the center of the lower end surface extends downwards to form a boss for guiding, the boss extends into the guide sleeve 1 from a guide hole arranged on the first end cover 2, and the boss is fixed with the movable platen 7 by a screw.
Referring to fig. 1-3, the disc spring set 4 is arranged in the guide sleeve 1, and a movable platen 7 in the driving member acts on the upper end surface of the disc spring set, wherein the disc spring set 4 is formed by vertically overlapping 16 disc springs pairwise in a relative manner.
Referring to fig. 1, a gap 14 larger than the amplitude is provided between the upper connecting plate 8 and the first end cap 2; in order to avoid that during vibration a collision occurs between the movable platen 7 of the driving member and the first end cap 2, a collision avoidance gap 13 is provided between the movable platen 7 and the first end cap 2.
Referring to fig. 1-3, the back pressure device is arranged in the guide sleeve 1, and the specific scheme is as follows:
referring to fig. 1 to 5, the back pressure device comprises three pre-pressed steel wire ropes 9, three lifting ring screws 10 serving as steel wire rope turning elements, a floating back pressure steel plate 11 and six other lifting ring screws 10 for fixing the pre-pressed steel wire ropes 9. Wherein,
the floating back pressure steel plate 11 is arranged between the disc spring set 4 and the second end cover 3;
the three lifting ring screws 10 serving as steel wire rope direction changing elements are symmetrically fixed on the movable platen 7 of the driving component around the axis of the guide sleeve 1;
three lifting ring screws 10 are symmetrically arranged on the floating back pressure steel plate 11 around the axis of the guide sleeve 1, and another three lifting ring screws 10 are correspondingly arranged on the floating back pressure steel plate 11 on the second end cover 3 beside the opposite positions of the three lifting ring screws 10; three pre-pressing steel wire ropes 9 are all arranged in a central hole of the disc spring group 4 in a broken line state, one end of each pre-pressing steel wire rope 9 is tied and fixed on one lifting bolt 10 arranged on the floating counter-pressure steel plate 11, the other end of each pre-pressing steel wire rope 9 bypasses the lifting bolt 10 which is used as a steel wire rope direction-changing element and then turns back, and then the pre-pressing steel wire rope 9 penetrates through the floating counter-pressure steel plate 11 from the position, corresponding to the lifting bolt 10 arranged on the second end cover 3, beside the fixed point of the pre-pressing steel wire rope on the floating counter-pressure steel plate 11 and is tied and fixed on; on the floating back pressure steel plate 11, a through hole 12 penetrating the pre-pressing steel wire rope 9 is arranged at the penetrating position of each pre-pressing steel wire rope 9, and the diameter of the through hole 12 is larger than the diameter of the pre-pressing steel wire rope 9.
Referring to fig. 1 to 3, in order to achieve the purpose of presetting the initial stiffness, the installation and tensioning methods of the three pre-pressed steel wire ropes 9 are as follows: (1) firstly, determining the compression amount of a disc spring set 4 according to the initial stiffness preset by a damper and the elastic coefficient of the disc spring set 4, and further calculating the length of each pre-pressed steel wire rope 9 meeting the requirement of the initial stiffness of the damper; (2) after the disc spring group 4, the back pressure device and the movable platen 7 of the driving member are connected according to the figures 1-3, the disc spring group 4 is compressed, three lifting ring screws 10 on the floating back pressure steel plate 11 and three through holes 12 on the second end cover 3 are exposed, the adjustment is repeated, the actual length of each prepressing steel wire rope 9 is equal to the calculated length, then the prepressing steel wire rope is tied on the lifting ring screws 10 on the second end cover 3 and is fixed by common steel wire rope clamps (not shown in the figures), and the disc spring group 4 is always clamped between the movable platen 7 of the driving member and the floating back pressure steel plate 11; (3) and (3) placing the components assembled in the step (2) into the guide sleeve 1, fixing the guide sleeve 1 and the second end cover 3 together, and finally fixing the upper connecting plate 8 and the movable platen 7 together to obtain the disc spring damper with the preset initial stiffness.
Referring to fig. 1-3, because the damper is a vertical shock isolation device in this embodiment, when the pre-pressed steel wire rope 9 is tensioned, the sum of the tensions of the three pre-pressed steel wire ropes 9 is equal to the static load borne by the damper, so that the two-way elastic deformation symmetry of the damper can be ensured.
Under ideal conditions, the building should not displace when the vertical waves of the earthquake are transmitted to the building through the shock isolation device. Based on the above, the working principle of the earthquake-proof shock isolation device for buildings in the embodiment is as follows: referring to fig. 1, when the dynamic load generated by the vertical wave of the earthquake overcomes the initial stiffness of the damper, if the dynamic load pushes up the second end cap 3 along the axis of the guide sleeve 1, the reaction force of the dynamic pressure plate 7 compresses the disc spring group 4 downward, and the second end cap 3 moves upward with the ground without the building moving; if the second end cover 3 is pulled down along the axis of the guide sleeve 1 by the dynamic load, the prepressing steel wire rope 9 reversely lifts the floating counter-pressure steel plate 11 through the lifting bolt 10 serving as a steel wire rope direction changing element to compress the disc spring group 4 upwards, and the second end cover 3 moves downwards along with the ground, but the building still does not move. Therefore, when the ground vibrates up and down due to the longitudinal seismic wave, the disc spring set can be compressed to generate elastic deformation so as to consume energy.
Example 2
Referring to fig. 6 to 11, the damper in this example is also a vertical seismic isolation device for earthquake resistance of buildings, and the following improvements are mainly made on the basis of example 1: (1) increasing the number of the pre-pressed steel wire ropes 9 from three to six; (2) replacing the lifting bolt 10 as a steel wire rope turning element with a U-shaped member 15; (3) replacing a lifting ring screw 10 for fixing the other end of the prepressing steel wire rope 9 with a steel wire rope self-locking anchorage device 16; (4) the middle part of the second end cover 3 is thickened and is upwards bulged to form an inverted basin shape, so that a steel wire rope self-locking anchorage device 16 can be conveniently installed; (5) the counter-pressure device is correspondingly changed to:
the back pressure device consists of six pre-pressed steel wire ropes 9, six U-shaped members 15 serving as steel wire rope turning elements, a floating back pressure steel plate 11, six lifting ring screws 10 for fixing one ends of the pre-pressed steel wire ropes 9 and six steel wire rope self-locking anchors 16 for fixing the other ends of the pre-pressed steel wire ropes 9; wherein,
the floating back pressure steel plate 11 is arranged between the disc spring set 4 and the second end cover 3;
six U-shaped members 15 serving as steel wire rope direction changing elements are symmetrically fixed on the movable pressing plate 7 of the driving member around the axis of the guide sleeve 1; referring to fig. 9, the U-shaped member 15 is formed by bending round steel, and circular holes matched with two side edges of the U-shaped member 15 are arranged at corresponding positions of the movable platen 7 of the driving member, where the U-shaped member 15 is arranged, the U-shaped member 15 is inserted into the circular holes, and the two are welded and fixed together;
six lifting ring screws 10 are symmetrically arranged on the floating back pressure steel plate 11 around the axis of the guide sleeve 1, and six steel wire rope self-locking anchors 16 are correspondingly arranged beside the opposite positions of the six lifting ring screws 10 arranged on the floating back pressure steel plate 11 on the second end cover 3; six pre-pressing steel wire ropes 9 are distributed in the central hole of the disc-shaped spring group 4 in a broken line state, one end of each pre-pressing steel wire rope 9 is fixed on a floating counter-pressure steel plate 11 by a lifting ring screw 10, the other end of each pre-pressing steel wire rope 9 is folded after passing through a U-shaped member 15 which is used as a steel wire rope turning element and is opposite, then the pre-pressing steel wire rope 9 passes through the floating counter-pressure steel plate 11 from a position which is close to a fixed point on the floating counter-pressure steel plate 11 and corresponds to a steel wire rope self-locking anchorage device 16 arranged on the second end cover 3, and the; on the floating back pressure steel plate 11, a through hole 12 penetrating the pre-pressing steel wire rope 9 is arranged at the penetrating position of each pre-pressing steel wire rope 9, and the diameter of the through hole 12 is larger than the diameter of the pre-pressing steel wire rope 9.
Referring to fig. 10 and 11, in the above-mentioned counter-pressure device, the steel wire rope self-locking anchorage 16 is composed of a mounting hole 16-1, a clamping jaw 16-2 and a locking bolt 16-3, wherein the mounting hole 16-1 is arranged on the second end cover 3; the mounting hole 16-1 consists of a section of taper hole and a section of threaded hole, wherein the taper hole is positioned at one side in the guide sleeve 1, the pointed end points to the inside of the guide sleeve 1, and the threaded hole is positioned at one side outside the guide sleeve 1; the clamping jaw 16-2 is conical and matched with the taper hole, and consists of 3 petals, and a clamping hole for clamping and prepressing the steel wire rope 9 is arranged in the clamping jaw along the axis; the check bolt 16-3 is matched with the threaded hole, and a round hole with the diameter larger than that of the pre-pressing steel wire rope 9 is arranged in the body along the axis; the clamping jaw 16-2 is arranged in the taper hole, and the anti-loose bolt 16-3 is arranged in the threaded hole.
And assembling the damper according to the figures 6-11, and enabling the other end of the corresponding pre-pressing steel wire rope 9 to penetrate out of the clamping hole in the corresponding clamping jaw 16-2 and the round hole of the anti-loosening bolt 16-3. Then the rope head of the exposed prepressing steel wire rope 9 is tied on a traction tensioning machine, and the tension of the prepressing steel wire rope 9 is monitored by a tension detector while the traction tensioning is carried out. When the prepressing steel wire rope 9 is tensioned to the tension required by the preset initial rigidity, the locking bolt 16-3 is screwed to push the clamping jaw 16-2 to clamp and lock the prepressing steel wire rope 9, so that the disc spring group 4 is always clamped between the floating back pressure steel plate 11 and the movable pressure plate 7.
The other embodiments other than the above-described embodiment are the same as those of embodiment 1.
The working principle of the seismic isolation device for the earthquake resistance of the building in the embodiment is the same as that in the embodiment 1, and the public can analyze the seismic isolation device by referring to the embodiment 1.
Example 3
Referring to fig. 12 to 14, this example is a damper for earthquake-resistant reinforcement of a building structure, the damper includes a guide sleeve 1, a first end cap 2 and a second end cap 3 are respectively fixed at two ends of the guide sleeve 1, a disc spring set 4 is arranged inside the guide sleeve, and a driving member extends into the guide sleeve 1 from the center of the first end cap 2 at one end of the guide sleeve and presses on the disc spring set 4; wherein the driving member is composed of a movable platen 7 and a first driving rod 17 connected with the movable platen, and the tail end of the first driving rod 17 is provided with a hinge hole 18.
Referring to fig. 12, a second driving rod 19 is integrally connected to the outside of the second end cap 3, and the end of the second driving rod 19 is also provided with a hinge hole 18.
Referring to fig. 12-16, a back pressure device is arranged in the guide sleeve 1, and the back pressure device is composed of three pre-pressed steel wire ropes 9, three fixed pulleys 20 serving as steel wire rope turning elements, a floating back pressure steel plate 11, three lifting bolts 10 for fixing one end of the pre-pressed steel wire ropes 9, and three steel wire rope self-locking anchors 16 for fixing the other end of the pre-pressed steel wire ropes 9. Wherein,
the floating back pressure steel plate 11 is arranged between the disc spring set 4 and the second end cover 3;
three fixed pulleys 20 as steel wire rope direction changing elements symmetrically fix the lower surface of the movable platen 7 of the driving member in the central hole of the disc spring group 4 around the axis of the guide sleeve 1; wherein the fixed pulley 20 is hinged on a bracket which is welded on the movable platen 7 of the driving member;
three lifting ring screws 10 are symmetrically arranged on the floating back pressure steel plate 11 around the axis of the guide sleeve 1, and three steel wire rope self-locking anchors 16 are correspondingly arranged beside the opposite positions of the three lifting ring screws 10 arranged on the floating back pressure steel plate 11 on the second end cover 3; the three pre-pressing steel wire ropes 9 are distributed in the central hole of the disc-shaped spring group 4 in a broken line state, one end of each pre-pressing steel wire rope 9 is fixed on the floating counter-pressure steel plate 11 through a lifting ring screw 10, the other end of each pre-pressing steel wire rope 9 is folded after passing through a fixed pulley 20 which is used as a steel wire rope turning element and is opposite, then the pre-pressing steel wire rope 9 passes through the floating counter-pressure steel plate 11 from a position which is close to a fixed point of the pre-pressing steel wire rope on the floating counter-pressure steel plate 11 and corresponds to a steel wire rope self-locking anchorage device 16 arranged; on the floating back pressure steel plate 11, a through hole 12 penetrating the pre-pressing steel wire rope 9 is arranged at the penetrating position of each pre-pressing steel wire rope 9, and the diameter of the through hole 12 is larger than the diameter of the pre-pressing steel wire rope 9.
The steel wire rope self-locking anchorage device 16 in the scheme is completely the same as that in the example 2, the assembling method of the damper is also similar to that in the example 2, and the public can refer to the example 2 for implementation.
Referring to fig. 12, the working principle of the damper for seismic reinforcement of a building structure according to the present embodiment is as follows: when a dynamic load larger than the designed static load is relatively acted on the first driving rod 17 and the second driving rod 19 along the axis of the guide sleeve 1, the dynamic pressure plate 7 compresses the disc spring group 4 downwards, and the hinge holes 18 on the first driving rod 17 and the second driving rod 19 relatively move; when a dynamic load larger than a designed static load acts on the first driving rod 17 and the second driving rod 19 along the axis of the guide sleeve 1 in a reverse direction, the prepressing steel wire rope 9 reversely lifts the floating back-pressure steel plate 11 through the fixed pulley 20 to compress the belleville spring group 4, and the hinge holes 18 on the first driving rod 17 and the second driving rod 19 reversely move (at this time, the belleville spring group 4 is still in a pressed state). It can be seen that the axial dynamic load acting on the damper, either oppositely or oppositely, can compress the disc spring assembly 4 to cause it to elastically deform and consume energy.
Claims (5)
1. A disc spring damper capable of presetting initial stiffness comprises a guide sleeve, wherein one end of the guide sleeve is provided with a first end cover, the other end of the guide sleeve is provided with a second end cover, and a disc spring group is coaxially arranged inside the guide sleeve; a driving component extends into the guide sleeve from the center of the first end cover and acts on the disc spring group, wherein the disc spring group is formed by overlapping a group of disc springs; it is characterized in that the preparation method is characterized in that,
the guide sleeve is also internally provided with a back pressure device which comprises more than three pre-pressed steel wire ropes, steel wire rope turning elements with the same number as the pre-pressed steel wire ropes and a floating back pressure steel plate, wherein,
the floating back pressure steel plate is arranged between the disc spring set and the second end cover;
the steel wire rope direction changing element is symmetrically fixed on the driving component around the axis of the guide sleeve;
the prepressing steel wire ropes are distributed in the central holes of the disc spring groups in a broken line state, one end of each prepressing steel wire rope is symmetrically fixed on the floating back pressure steel plate around the axis of the guide sleeve, the other end of each prepressing steel wire rope passes through the opposite steel wire rope turning element and then turns back, and then the prepressing steel wire rope passes through the floating back pressure steel plate beside the fixed point of the prepressing steel wire rope on the floating back pressure steel plate and is fixed on the second end cover;
on the floating back pressure steel plate, a through hole for penetrating the pre-pressed steel wire rope is arranged at the penetrating position of each pre-pressed steel wire rope, and the aperture of the through hole is larger than the diameter of the pre-pressed steel wire rope;
and tensioning the pre-pressed steel wire rope to a tension required by the preset initial rigidity, so that the disc spring group is always clamped between the driving member and the floating back pressure steel plate.
2. The disc spring damper with the presettable initial stiffness of claim 1, wherein the disc spring damper with the presettable initial stiffness is a damper for seismic reinforcement of a building structure.
3. The disc spring damper with the presettable initial stiffness of claim 1, wherein the disc spring damper with the presettable initial stiffness is a vertical seismic isolation device for seismic resistance of a building.
4. The disc spring damper with the presettable initial stiffness as claimed in claim 1, 2 or 3, wherein the other end of the pre-pressed wire rope is fixed on the second end cap by a wire rope self-locking anchorage; the steel wire rope self-locking anchorage device consists of a mounting hole, a clamping jaw and a check bolt, wherein,
the mounting hole is formed in the second end cover; 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 guide sleeve, the pointed end points into the guide sleeve, and the threaded hole is positioned at the other side far away from the guide sleeve;
the clamping jaw is conical and matched with the taper hole, and consists of 3-5 petals, and a clamping hole for clamping and prepressing the steel wire rope is formed in the clamping jaw along the axis;
the anti-loosening bolt is matched with the threaded hole, and a round hole with the diameter larger than that of the corresponding prepressing steel wire rope is arranged in the anti-loosening bolt along the axis;
the clamping jaw is installed in the taper hole, and the anti-loosening bolt is installed in the threaded hole.
5. The disc spring damper with preset initial stiffness as claimed in claim 4, wherein the wire rope direction changing element is a fixed pulley, an eye screw or a U-shaped member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905964.XA CN106436954A (en) | 2016-10-17 | 2016-10-17 | Disc spring damper with presettable initial stiffness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905964.XA CN106436954A (en) | 2016-10-17 | 2016-10-17 | Disc spring damper with presettable initial stiffness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106436954A true CN106436954A (en) | 2017-02-22 |
Family
ID=58175423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610905964.XA Pending CN106436954A (en) | 2016-10-17 | 2016-10-17 | Disc spring damper with presettable initial stiffness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106436954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938152A (en) * | 2018-08-09 | 2018-12-07 | 深圳市龙岗区人民医院 | A kind of bionical intervertebral disk prosthesis |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000336971A (en) * | 1999-06-01 | 2000-12-05 | Nippon Steel Corp | Vibration energy absorbing device for tension structure and method of construction |
| CN2716587Y (en) * | 2004-07-09 | 2005-08-10 | 北京工业大学 | Disk spring and elastic daub buffer |
| CN201136517Y (en) * | 2007-12-18 | 2008-10-22 | 中国北车集团四方车辆研究所 | Bidirectional buffer for pulling-pressing conversion of elastic body |
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
-
2016
- 2016-10-17 CN CN201610905964.XA patent/CN106436954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000336971A (en) * | 1999-06-01 | 2000-12-05 | Nippon Steel Corp | Vibration energy absorbing device for tension structure and method of construction |
| CN2716587Y (en) * | 2004-07-09 | 2005-08-10 | 北京工业大学 | Disk spring and elastic daub buffer |
| CN201136517Y (en) * | 2007-12-18 | 2008-10-22 | 中国北车集团四方车辆研究所 | Bidirectional buffer for pulling-pressing conversion of elastic body |
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938152A (en) * | 2018-08-09 | 2018-12-07 | 深圳市龙岗区人民医院 | A kind of bionical intervertebral disk prosthesis |
| CN108938152B (en) * | 2018-08-09 | 2024-05-14 | 深圳市龙岗区人民医院 | Bionic intervertebral disc prosthesis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106369096B (en) | A kind of adjustable back pressure type disk spring damper of initial stiffness | |
| CN106545101A (en) | The three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted | |
| CN106368482A (en) | Disc spring shock absorber with adjustable initial rigidity | |
| CN106567322B (en) | A kind of spiral compression spring damper of predeterminable initial stiffness | |
| CN106567461A (en) | Three-dimensional shock isolation support adjustable in vertical initial stiffness | |
| CN106381930A (en) | Three-dimensional vibration isolation device capable of presetting vertical initial rigidity | |
| CN106499079B (en) | Three-dimensional shock isolation device capable of adjusting vertical early rigidity | |
| CN106593053A (en) | Three-dimensional vibration isolation support seat capable of presetting vertical initial rigidity | |
| CN106382316B (en) | A kind of complex spring damper that can adjust early stage rigidity | |
| CN106382321B (en) | A kind of adjustable back pressure type coiled spring damper of initial stiffness | |
| CN106481131A (en) | A kind of three-dimensional shock isolation support of predeterminable vertical initial stiffness | |
| CN106436954A (en) | Disc spring damper with presettable initial stiffness | |
| CN106382322B (en) | A kind of complex spring damper of adjustable initial stiffness | |
| CN106381932A (en) | Three-dimensional vibration isolation support with adjustable vertical early-stage rigidity | |
| CN106436918A (en) | Three-dimensional shock insulation support capable of presetting vertical early rigidity | |
| CN106438812B (en) | A kind of rubber air spring damper that early stage rigidity is predeterminable | |
| CN106436953A (en) | Rubber damper with presettable initial rigidity | |
| CN106286699B (en) | A kind of complex spring damper of adjustable early stage rigidity | |
| CN106286663B (en) | A kind of disk spring damper of adjustable early stage rigidity | |
| CN106567589A (en) | Rubber damper capable of adjusting initial stiffness | |
| CN106499080A (en) | A kind of predeterminable three-dimensional isolation device of vertical early stage rigidity | |
| CN106352002B (en) | A kind of predeterminable disk spring damper of early stage rigidity | |
| CN106401000A (en) | Vertical initial rigidity adjustable three-dimensional shock insulation device | |
| CN106337593A (en) | Composite spring damper capable of pre-setting initial rigidity | |
| CN106639455A (en) | Three-dimensional shock isolation device with presettable initial vertical rigidity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |