32results about How to "Change characteristic parameters" patented technology

The invention discloses a rubber damper capable of adjusting early-stage rigidity. The rubber damper is characterized in that a guide sleeve is internally further provided with a backward pressing device; the backward pressing device comprises two groups of pre-pressing steel ropes with the quantity of at least three, and two floating pressing plates, wherein the two groups of pre-pressing steel ropes are distributed in an annular space at a linear state; one end of each of one group of pre-pressing steel ropes is fixed on the floating pressing plate adjacent to a second end cover, and the other ends of the pre-pressing steel ropes penetrate through the floating pressing plate adjacent to a driving component to be anchored on the driving component through steel rope self-locking tensioning anchoring devices; one end of each of the other group of pre-pressing steel ropes is fixed on the floating pressing plate adjacent to driving component, and the other ends of the pre-pressing steel ropes penetrate through the floating pressing plate adjacent to the second end cover to be anchored on the driving component through the steel rope self-locking tensioning anchoring devices; and the two groups of pre-pressing steel ropes are tensioned, so that a rubber vibration absorption pad is clamped between the two floating pressing plates all the time.

The invention relates to a composite spring damper capable of regulating initial stiffness. The composite spring damper is characterized in that a back pressure device is further arranged in a guide sleeve, wherein the back pressure device comprises three or more pre-compaction steel wire ropes, steel wire rope turning elements which are as many as the pre-compaction steel wire ropes, steel wire rope self-locking tensioning anchorage devices which are as many as the pre-compaction steel wire ropes and a floating back pressure steel plate; the pre-compaction steel wire ropes are distributed in a ring-shaped space in a folding mode; one end of each pre-compaction steel wire rope is symmetrically fixedly arranged on the floating back pressure steel plate around the axis of the guide sleeve; the other end of each pre-compaction steel wire rope is turned back after passing through one opposite steel wire rope turning element, then, passes through the floating back pressure steel plate beside a fixed point, on the floating back pressure steel plate, of each pre-compaction steel wire rope, and is fixedly arranged on a second end cover through each steel wire rope self-locking tensioning anchorage device; and each pre-compaction steel wire rope is tensioned to tension needed for setting initial rigidity, so that the composite spring is clamped between a drive component and the floating back pressure steel plate all the time.

The invention relates to a three-dimensional shock insulation device capable of adjusting the vertical initial stiffness. The three-dimensional shock insulation device comprises a vertical shock insulation support and a laminated rubber shock insulation support, and is characterized in that a back pressure device is further arranged in a guide sleeve of the vertical shock insulation support and comprises three or more pre-pressing steel wire ropes, steel wire rope direction-changing elements and steel wire rope self-locking tightening anchors which are numerically equal to the pre-pressing steel wire ropes, and a floating back pressure steel plate; the pre-pressing steel wire ropes are in broken line state; one end of each pre-pressing steel wire rope is symmetrically fixed on the floating back pressure steel plate around the axial line of the guide sleeve, and the other end of each pre-pressing steel wire rope bypasses the corresponding steel wire rope direction-changing element in a penetrating manner and then returns back; all the pre-pressing steel wire ropes are connected in parallel together to form a rope bundle which penetrates through the floating back pressure steel plate and is anchored on a pedestal through the steel wire rope self-locking tightening anchors; and the pre-pressing steel wire ropes are tightened to tension required by preset initial stiffness, so that a cylindrical helical compression spring is always clamped between a driving pressure plate and the floating back pressure steel plate.

The invention discloses a disc spring damper with an early stiffness adjusting function. The disc spring damper is characterized in that a reverse pressing device is arranged between two end plates of the damper, the reverse pressing device comprises two sets of prepressing steel cables and two floating pressing plates, each set of prepressing steel cables comprises at least three steel cables, and each floating pressing plate is arranged on a guide rod between the corresponding end plate and a disc spring set; the two sets of prepressing steel cables are symmetrically distributed on the periphery of the disc spring set around the axes of the guide rods in a linear mode. One ends of each set of prepressing steel cables are fixed to one of the floating pressing plates, and the other ends of each set of prepressing steel cables penetrate through the other floating pressing plate and anchored onto the end plate adjacent to the floating pressing plate through a steel cable self-locking tensioning anchor. The two sets of prepressing steel cables are tensioned, and the disc spring is clamped between the two floating pressing plates all the time.

The invention discloses a spiral spring damper with adjustable early-period rigidity. The spiral spring damper is characterized in that a reverse pressure device is also arranged in a guide sleeve; the reverse pressure device comprises two groups of (at least three) prepressing steel cables and two floating press plates, wherein the two groups of prepressing steel cables are symmetrically distributed in a center hole of a cylindrical spiral compression spring in a linear state by surrounding the axial line of the guide sleeve; one end of one group of prepressing steel cables is fixed on the floating press plate adjacent to a driving component; the other end of the one group of prepressing steel cables penetrates through the floating press plate adjacent to a second end cover and is anchored on the second end cover through a steel rope self-locking tensioning anchor; one end of the other group of prepressing steel cables is fixed on the floating press plate adjacent to the second end cover; the other end of the other group of prepressing steel cables penetrates the floating press plate adjacent to the driving component and is anchored on the driving component by the steel rope self-locking tensioning anchor; the two groups of prepressing steel cables are tensioned, so that the cylindrical spiral compression spring is always clamped between the two floating press plates.

The invention discloses a three-dimensional shock isolation device with adjustable vertical early stiffness. The three-dimensional shock isolation device comprises a laminated rubber shock isolation bearing and a vertical shock isolation bearing which are sequentially connected with each other up and down in series, and is characterized in that a back pressure device is also arranged between two end plates of the vertical shock isolation bearing, and the back pressure device comprises two groups of pre-pressing steel cables and two floating platens, wherein the two floating platens are respectively sleeved on a guide rod between one end plate and a cylindrical helical compression spring; the two groups of pre-pressing steel cables are respectively distributed at the periphery of the cylindrical helical compression spring around the axis of the guide rod in a straight line state, one head of each pre-pressing steel cable of each group of pre-pressing steel cables is fixed on one floating platen, and the other head of each pre-pressing steel cable of each group of pre-pressing steel cables penetrates through the other floating platen and is anchored on the end plate adjacent to the floating platen by a steel cable self-locking tensioning anchor; the two groups of pre-pressing steel cables are tensioned, so that the cylindrical helical compression spring is clamped between the two floating platens all the time.

The invention discloses a three-dimensional shock-insulating support base for adjusting vertical early rigidity. The three-dimensional shock-insulating support base comprises an overlapped rubber shock-insulating support base and a vertical shock-insulating support base, which are vertically connected in series with each other. The three-dimensional shock-insulating support base is characterized in that a back pressure device is arranged in a guide sleeve of the vertical shock-insulating support base; the back pressure device comprises two sets of pre-pressing wire ropes and two floating pressing plates; the two sets of pre-pressing wire ropes are distributed between a cylindrical rubber elastic component and the guide sleeve; one end of each pre-pressing wire rope in one set is fixed on the floating pressing plate adjacent to a driving pressing plate while the other end respectively penetrates through the floating pressing plate adjacent to the base and is anchored on the base through a rope self-locking tensioning anchor; one end of each pre-pressing wire rope in the other set is fixed on the floating pressing plate adjacent to the base while the other end penetrates through the floating pressing plate adjacent to the driving pressing plate and is anchored on the driving pressing plate through the rope self-locking tensioning anchor; through the tensioning of the two sets of pre-pressing wire ropes, the cylindrical rubber elastic component is clamped between the two floating pressing plates all the time.

The invention discloses an early-rigidity-adjustable composite spring damper. The early-rigidity-adjustable composite spring damper is characterized in that a counter pressure device is further arranged in a guide sleeve, the counter pressure device comprises two groups of pre-pressing steel cables and two floating pressure plates, each group of the pre-pressing steel cables comprises at least three steel cables, the two groups of the pre-pressing steel cables are respectively distributed in an annular space in a straight line state, one ends of one group of the pre-pressing steel cables are respectively fixed on the floating pressure plate adjacent to a second end cover, the other ends of the one group of the pre-pressing steel cables penetrate the floating pressure plate adjacent to a drive component and are anchored to the drive component through steel-cable self-locking tensioning anchoring tools, one ends of the other group of the pre-pressing steel cables are respectively fixed on the floating pressure plate adjacent to the drive component, and the other ends of the other group of the pre-pressing steel cables penetrate the floating pressure plate adjacent to the second end cover and are anchored to the second end cover through steel-cable self-locking tensioning anchoring tools; when the two groups of the pre-pressing steel cables are tensioned, composite springs are constantly clamped between the two floating pressure plates.

The invention discloses a spiral spring damper with early rigidity capable of being adjusted. The spiral spring damper is characterized in that a back pressure is arranged between two end plates of the damper, the back pressure device comprises two sets of prepressing steel cables with the number being three or more in each set and two floating pressing plates, wherein each floating pressing plate is arranged on a guide rod between one end plate and a cylindrical spiral compressed spring in a sleeving mode, the two sets of prepressing steel cables are symmetrically distributed on the periphery of the cylindrical spiral compressed spring in a linear state about the axes of the guide rods correspondingly, one ends of each set of prepressing steel cables are fixed to one floating pressing plate, the other ends of each set of prepressing steel cables penetrate through the other floating pressing plate to be anchored to the corresponding end plate adjacent to the floating pressing plate through a steel cable self-locking tensioning anchor gear, the two sets of prepressing steel cables are tensioned, and the cylindrical spiral compressed spring is always clamped between the two floating pressing plates.

The invention relates to a back pressure spiral compression spring damper adjustable in stiffness. The back pressure spiral compression spring damper is characterized in that a back pressure device is arranged between two end plates and comprises three or more prepressing steel wire ropes, a floating back pressure steel plate, steel wire rope turning elements and steel wire rope self-locking tensioning anchorage devices, and the number of the steel wire rope turning elements and the number of the steel wire rope self-locking tensioning anchorage devices are equal to the number of the prepressing steel wire ropes; the prepressing steel wire ropes are distributed on the periphery of a cylindrical spiral compression spring in a broken line state; one ends of all the prepressing steel wire ropes are symmetrically fixed to the floating back pressure steel plate around the axis of a guide rod, and the other ends of all the prepressing steel wire ropes are retraced after winding the corresponding steel wire rope turning elements in a penetrating mode, then penetrate through the floating back pressure steel plate from the positions beside fixing points of the prepressing steel wire ropes on the floating back pressure steel plate and are anchored to the end plate adjacent to the floating back pressure steel plate through the corresponding steel wire rope self-locking tensioning anchorage devices; and the prepressing steel wire ropes are tensioned to the tensile force required by the preset initial stiffness, so that the cylindrical spiral compression spring is always clamped between the end plate away from the floating back pressure steel plate and the floating back pressure steel plate.

The invention relates to a disc spring shock absorber with adjustable initial rigidity. The disc spring shock absorber is characterized in that a back pressure device is arranged in a guide sleeve; the back pressure device comprises three or more prestressed steel wire ropes, steel wire rope turning elements equal to the prestressed steel wire ropes in number, steel wire rope self-locking tensioning anchors equal to the prestressed steel wire ropes in number and a floating back pressure steel plate; the prestressed steel wire ropes are distributed in a central hole of a disc spring set in a broken line mode; one end of each prestressed steel wire rope is symmetrically fixed to the floating back pressure steel plate around the axis of the guide sleeve, and the other end of the prestressed steel wire rope turns back after being wound across the opposite steel wire rope turning element, then penetrates through the floating back pressure steel plate from the position beside a fixing point, on the floating back pressure steel plate, of the prestressed steel wire rope, and is anchored to a second end cover through the corresponding steel wire rope self-locking tensioning anchor; and each prestressed steel wire rope is tensioned to the tension required for preset initial rigidity, and the disc spring set is made to be clamped between a driving component and the floating back pressure steel plate all along.

The invention discloses an adjustable vertical early-stage rigid three-dimensional shock insulation support. The three-dimensional shock insulation support comprises a laminated rubber shock isolation support and a vertical shock isolation support which are vertically and serially connected in sequence and is characterized in that a reverse pressing device is further arranged in a guiding sleeve of the vertical shock isolation support and comprises two groups of pre-pressing steel cables and two floating press plates, the two groups of pre-pressing steel cables are distributed between a rubber air spring and the guiding sleeve, one end of one group of pre-pressing steel cables is fixed to the corresponding floating press plate adjacent to a driving press plate, and the other end of the group penetrates through the corresponding floating press plate adjacent to base to be anchored on the base through a steel cable self-locking and tensioning anchor. One end of the other group of pre-pressing steel cables is fixed to the corresponding floating press plate adjacent to the base, and the other end of the other group of pre-pressing steel cables penetrates through the corresponding floating press plate adjacent to the corresponding driving press plate to be anchored on the corresponding driving press plate through a steel cable self-locking and tensioning anchor. The two groups of pre-pressing steel cables are tensioned, so that the rubber air spring is always clamped between the two floating press plates.

The invention discloses a three-dimensional vibration isolation device with adjustable vertical early-stage rigidity. The device comprises a stacked rubber vibration isolation support and a vertical vibration isolation support which are sequentially connected in series from top to bottom, and is characterized in that a backward pressing device is arranged in a guide sleeve of the vertical vibration isolation support; the backward pressing device comprises two groups of pre-pressing steel cables and two floating pressing plates, wherein the two groups of pre-pressing steel cables are distributed in a central hole of a cylindrical spiral compression spring in a straight-line state respectively; one end of one group of the pre-pressing steel cable is fixed on the floating pressing plate adjacent to a driving pressing plate respectively, and the other end of the pre-pressing steel cable penetrates through the floating pressing plate adjacent to a base respectively and then is anchored on the base through a steel cable self-locking tensioning anchorage device; one end of the other group of the pre-pressing steel cable is fixed on the floating pressing plate adjacent to the base respectively, and the other end of the other group of the pre-pressing steel cable penetrates through the floating pressing plate adjacent to the driving pressing plate respectively and then is anchored on the driving pressing plate through a steel cable self-locking tensioning anchorage device; and the two groups of pre-pressing steel cables are tensioned, so that the cylindrical spiral compression spring is clamped between the two floating pressing plates all the time.

The invention relates to a composite spring damper capable of regulating initial stiffness. The composite spring damper is characterized in that a back pressure device is further arranged in a guide sleeve, wherein the back pressure device comprises three or more pre-compaction steel wire ropes, steel wire rope turning elements which are as many as the pre-compaction steel wire ropes, steel wire rope self-locking tensioning anchorage devices which are as many as the pre-compaction steel wire ropes and a floating back pressure steel plate; the pre-compaction steel wire ropes are distributed in a ring-shaped space in a folding mode; one end of each pre-compaction steel wire rope is symmetrically fixedly arranged on the floating back pressure steel plate around the axis of the guide sleeve; the other end of each pre-compaction steel wire rope is turned back after passing through one opposite steel wire rope turning element, then, passes through the floating back pressure steel plate beside a fixed point, on the floating back pressure steel plate, of each pre-compaction steel wire rope, and is fixedly arranged on a second end cover through each steel wire rope self-locking tensioning anchorage device; and each pre-compaction steel wire rope is tensioned to tension needed for setting initial rigidity, so that the composite spring is clamped between a drive component and the floating back pressure steel plate all the time.

The invention discloses a three-dimensional seismic isolation bearing capable of adjusting vertical early rigidity. The three-dimensional seismic isolation bearing comprises a laminated rubber seismic isolation bearing and a vertical seismic isolation bearing which are sequentially connected with each other in series up and down and is characterized in that a back pressure device is further arranged in a guide sleeve of the vertical seismic isolation bearing, the back pressure device comprises two groups of prepressing steel cables and two floating platens, wherein the two groups of prepressing steel cables are distributed between a composite spring and the guide sleeve, one end of each prepressing steel cable of one group of prepressing steel cables is fixed on the floating platen adjacent to a driving platen, and the other end of each prepressing steel cable of one group of prepressing steel cables penetrates through the floating platen adjacent to a base and is anchored on the base by a steel cable self-locking and tensioning anchorage device; one end of each prepressing steel cable of the other group of prepressing steel cables is fixed on the floating platen adjacent to the base, and the other end of each prepressing steel cable of the other group of prepressing steel cables penetrates through the floating platen adjacent to the driving platen and is anchored on the driving platen by the steel cable self-locking and tensioning anchorage device; the two groups of prepressing steel cables are tensioned, so that the composite spring is clamped between the two floating platens all the time.

The invention discloses a three-dimensional shock isolation device with adjustable vertical early stiffness. The three-dimensional shock isolation device comprises a laminated rubber shock isolation bearing and a vertical shock isolation bearing which are sequentially connected with each other up and down in series, and is characterized in that a back pressure device is also arranged between two end plates of the vertical shock isolation bearing, and the back pressure device comprises two groups of pre-pressing steel cables and two floating platens, wherein the two floating platens are respectively sleeved on a guide rod between one end plate and a cylindrical helical compression spring; the two groups of pre-pressing steel cables are respectively distributed at the periphery of the cylindrical helical compression spring around the axis of the guide rod in a straight line state, one head of each pre-pressing steel cable of each group of pre-pressing steel cables is fixed on one floating platen, and the other head of each pre-pressing steel cable of each group of pre-pressing steel cables penetrates through the other floating platen and is anchored on the end plate adjacent to the floating platen by a steel cable self-locking tensioning anchor; the two groups of pre-pressing steel cables are tensioned, so that the cylindrical helical compression spring is clamped between the two floating platens all the time.

The invention discloses a disc spring damper with an early stiffness adjusting function. The disc spring damper is characterized in that a reverse pressing device is arranged between two end plates of the damper, the reverse pressing device comprises two sets of prepressing steel cables and two floating pressing plates, each set of prepressing steel cables comprises at least three steel cables, and each floating pressing plate is arranged on a guide rod between the corresponding end plate and a disc spring set; the two sets of prepressing steel cables are symmetrically distributed on the periphery of the disc spring set around the axes of the guide rods in a linear mode. One ends of each set of prepressing steel cables are fixed to one of the floating pressing plates, and the other ends of each set of prepressing steel cables penetrate through the other floating pressing plate and anchored onto the end plate adjacent to the floating pressing plate through a steel cable self-locking tensioning anchor. The two sets of prepressing steel cables are tensioned, and the disc spring is clamped between the two floating pressing plates all the time.

The invention discloses a spiral spring damper with early rigidity capable of being adjusted. The spiral spring damper is characterized in that a back pressure is arranged between two end plates of the damper, the back pressure device comprises two sets of prepressing steel cables with the number being three or more in each set and two floating pressing plates, wherein each floating pressing plate is arranged on a guide rod between one end plate and a cylindrical spiral compressed spring in a sleeving mode, the two sets of prepressing steel cables are symmetrically distributed on the periphery of the cylindrical spiral compressed spring in a linear state about the axes of the guide rods correspondingly, one ends of each set of prepressing steel cables are fixed to one floating pressing plate, the other ends of each set of prepressing steel cables penetrate through the other floating pressing plate to be anchored to the corresponding end plate adjacent to the floating pressing plate through a steel cable self-locking tensioning anchor gear, the two sets of prepressing steel cables are tensioned, and the cylindrical spiral compressed spring is always clamped between the two floating pressing plates.

The invention discloses a rubber damper capable of adjusting early-stage rigidity. The rubber damper is characterized in that a guide sleeve is internally further provided with a backward pressing device; the backward pressing device comprises two groups of pre-pressing steel ropes with the quantity of at least three, and two floating pressing plates, wherein the two groups of pre-pressing steel ropes are distributed in an annular space at a linear state; one end of each of one group of pre-pressing steel ropes is fixed on the floating pressing plate adjacent to a second end cover, and the other ends of the pre-pressing steel ropes penetrate through the floating pressing plate adjacent to a driving component to be anchored on the driving component through steel rope self-locking tensioning anchoring devices; one end of each of the other group of pre-pressing steel ropes is fixed on the floating pressing plate adjacent to driving component, and the other ends of the pre-pressing steel ropes penetrate through the floating pressing plate adjacent to the second end cover to be anchored on the driving component through the steel rope self-locking tensioning anchoring devices; and the two groups of pre-pressing steel ropes are tensioned, so that a rubber vibration absorption pad is clamped between the two floating pressing plates all the time.

The invention relates to a counter pressure type disc spring damper with the adjustable initial rigidity. The damper is characterized in that a counter pressure device is arranged inside a guide sleeve and comprises more than three pre-compression steel wire ropes, steel wire rope deflecting components with the same number as the pre-compression steel wire ropes, a steel wire rope self-locking and tensioning anchorage device and a floating counter pressure steel plate; the pre-compression steel wire ropes are distributed in a center hole of a disc spring set in the mode of a zigzag line, one ends of the pre-compression steel wire ropes are symmetrically fixed to the floating counter pressure steel plate around the axis of the guide sleeve, the other ends of the pre-compression steel wire ropes are deflected back after penetrating through the opposite steel wire rope deflecting components, then all the pre-compression steel wire ropes are combined to form a rope strand, and the rope strand penetrates through the floating counter pressure steel plate from the point where the axis of the guide sleeve passes on the floating counter pressure steel plate and is anchored to a second end cover by the steel wire rope self-locking and tensioning anchorage device; and when the pre-compression steel wire ropes are tensioned to reach the tension needed by the preset initial rigidity, the disc spring set is always clamped between a drive component and the floating counter pressure steel plate.

The invention discloses an early-rigidity-adjustable composite spring damper. The early-rigidity-adjustable composite spring damper is characterized in that a counter pressure device is further arranged in a guide sleeve, the counter pressure device comprises two groups of pre-pressing steel cables and two floating pressure plates, each group of the pre-pressing steel cables comprises at least three steel cables, the two groups of the pre-pressing steel cables are respectively distributed in an annular space in a straight line state, one ends of one group of the pre-pressing steel cables are respectively fixed on the floating pressure plate adjacent to a second end cover, the other ends of the one group of the pre-pressing steel cables penetrate the floating pressure plate adjacent to a drive component and are anchored to the drive component through steel-cable self-locking tensioning anchoring tools, one ends of the other group of the pre-pressing steel cables are respectively fixed on the floating pressure plate adjacent to the drive component, and the other ends of the other group of the pre-pressing steel cables penetrate the floating pressure plate adjacent to the second end cover and are anchored to the second end cover through steel-cable self-locking tensioning anchoring tools; when the two groups of the pre-pressing steel cables are tensioned, composite springs are constantly clamped between the two floating pressure plates.

The invention discloses a spiral spring damper with adjustable early-period rigidity. The spiral spring damper is characterized in that a reverse pressure device is also arranged in a guide sleeve; the reverse pressure device comprises two groups of (at least three) prepressing steel cables and two floating press plates, wherein the two groups of prepressing steel cables are symmetrically distributed in a center hole of a cylindrical spiral compression spring in a linear state by surrounding the axial line of the guide sleeve; one end of one group of prepressing steel cables is fixed on the floating press plate adjacent to a driving component; the other end of the one group of prepressing steel cables penetrates through the floating press plate adjacent to a second end cover and is anchored on the second end cover through a steel rope self-locking tensioning anchor; one end of the other group of prepressing steel cables is fixed on the floating press plate adjacent to the second end cover; the other end of the other group of prepressing steel cables penetrates the floating press plate adjacent to the driving component and is anchored on the driving component by the steel rope self-locking tensioning anchor; the two groups of prepressing steel cables are tensioned, so that the cylindrical spiral compression spring is always clamped between the two floating press plates.

The invention discloses a three-dimensional base-isolation device capable of adjusting vertical early stage rigidity; the three-dimensional base-isolation device comprises a lamination rubber base isolation bearer and a vertical base isolation bearer connected up and down in series; the features are that a back pressure device is arranged between two end plates of the vertical base isolation bearer; the back pressure device comprises two precompressed steel ropes and two floating pressure plates; the two floating pressure plates are respectively sleeved on a guide rod between one end plate and a disc spring assembly; the two precompressed steel ropes are symmetrically distributed around the disc spring assembly in a linear state by respectively winding the guide rod axis; in addition, one end of each precompressed steel rope is respectively fixed on one floating pressure plate, and the other end respectively penetrates the other floating pressure plate and is anchored on the end plate adjacent to the floating pressure plate by a steel rope self-locking tensioning anchorage device; the two precompressed steel ropes can be tensioned, so the disc spring assembly can be always clamped between the two floating pressure plates.

The invention discloses a three dimensional base isolation device capable of adjusting vertical early stage rigidity; the three dimensional base isolation device comprises a lamination rubber base isolation bearer and a vertical base isolation bearer connected in series up and down; the features are that a back pressure device is arranged in a guide sleeve of the vertical base isolation bearer; the back pressure device comprises two sets of precompressed steel ropes and two floating pressure plates; the two sets of precompressed steel ropes are respectively distributed in the central hole of a disc type spring assembly in a linear state, wherein one end of one set of the precompressed steel rope is respectively fixed on the floating pressure plate adjacent to a drive pressure plate, and the other end respectively penetrates the floating pressure plate adjacent to the pedestal and is anchored on the pedestal by a steel rope self-locking tensioning anchorage device; one end of the other set of precompressed steel rope is respectively fixed on the floating pressure plate adjacent to the pedestal, and the other end respectively penetrates the floating pressure plate adjacent to the drive pressure plate and is anchored on the drive pressure plate by the steel rope self-locking tensioning anchorage device; the two sets of precompressed steel ropes are tensioned, so the disc type spring assembly is always clamped between the two floating pressure plates.

The invention discloses a communication device and an adjustable microstrip filter, wherein the adjustable microstrip filter includes a dielectric substrate, at least a first microstrip line and a second microstrip line and a first switch element, and one side of the dielectric substrate The surface is provided with a grounded conductive layer, at least the first microstrip line and the second microstrip line are arranged on the other surface of the dielectric substrate facing away from the grounded conductive layer, and the two ends of the first microstrip line are respectively connected to the signal input terminal and the signal output terminal ; One end of the second microstrip line is connected between the input end and the output end, and the other end is the first electrical floating end, and the first switch element is coupled to the first preset position of the second microstrip line for controlling the second Whether the effective length of the microstrip line ends at a first preset position. Through the above method, the present invention can change the effective length of the second microstrip line under the action of the external control signal, and then make the filter output microwave signals of different frequencies, thereby changing the characteristic parameters of the filter.

The invention discloses a rubber-air-spring damper capable of adjusting the early rigidity. The rubber-air-spring damper is characterized in that a reversely-pressing device is also arranged in a guiding sleeve and comprises two groups of at least three pre-pressed steel ropes and two floating pressing plates, wherein the two groups of pre-pressed steel ropes are respectively distributed in a ring-shaped space in a linear state, one end of each of one group of pre-pressed steel ropes is respectively fixedly arranged on the floating pressing plate adjacent to a second end cover, and the other end of each of one group of pre-pressed steel ropes penetrates through the floating pressing plate adjacent to a driving member to be anchored on the driving member by a steel-rope self-locking tensioning device; one end of each of the other group of pre-pressed steel ropes is respectively fixedly arranged on the floating pressing plate adjacent to the driving member, and the other end of each of the other group of pre-pressed steel ropes penetrates through the floating pressing plate adjacent to the driving member to be anchored on the driving member by the steel-rope self-locking tensioning device; rubber air springs are clamped between the two floating pressing plates all the time by tensioning the two groups of pre-pressed steel ropes.