33results about How to "Guaranteed axial stiffness" patented technology

The invention relates to a permanent magnet gyro motor with double stators and a through-hole bearing. The permanent magnet gyro motor comprises the stators, a rotor, two thrust plates and a shaft, wherein the shaft is coaxially sleeved in a bearing hole of a rotor bearing cover; the two thrust plates are respectively arranged at the left and right ends of the shaft according to a working manner of a hydrodynamic gas-lubricated bearing, and are fixed by inner nuts; the left end and the right end of the rotor are respectively provided with a stator; and the two stators are fixed on a shaft by outer nuts. The permanent magnet gyro motor is scientific in design, and reasonable in structure. According to the technology, the aim that the three-phase permanent magnet gyro motor (with the double stators and the through-hole type hydrodynamic gas-lubricated bearing) of a position-free sensor is applied in the field of gyros can be realized, so that the precision of the gyro and an inertial navigation system can be obviously improved, and the permanent magnet gyro motor is advanced in technology, and fills the technology blank in China.

The invention discloses an energy-consuming type buckling induction support with a variable-angle four-fold induction unit at the end. The energy-consuming type buckling induction support includes a restrained section and energy-consuming sections and further includes a supporting straight section, the energy-consuming sections are arranged at the two ends of the supporting straight section, each energy-consuming section is composed of at least one variable-angle four-fold induction unit in the axial direction of the support, and one variable-angle four-fold induction unit is a space body with the regular-polygon-shaped section, wherein the space body is formed by sequentially arranging m same variable-angle four-fold subunits in the ring direction and each variable-angle four-fold subunit is a space body formed by folding four trapezoidal plates in the same plane. Under the effect of a small shock, the energy-consuming type buckling induction support keeps elasticity, under the effects of a moderate or strong shock, the buckling induction support enters a yield stage, and the support has good stagnation and energy-consuming performance and has the effect of a damper. In the preparation, the addition of a sleeve on the outer part of a core energy-consuming member, grouting and other processes are voided, and the preparation is convenient to implement.

The invention relates to an electric spindle adopting double supports of an electromagnetic bearing and an angular contact ball bearing. An axial magnetic bearing (3) is arranged on the spindle in anelectric spindle shell (4), and radial magnetic bearings (2) are symmetrically arranged on the two sides of the axial magnetic bearing (3). The rigidity of the magnetic suspension bearing at a balanceposition is improved by using the electric spindle structure supported by the electromagnetic bearing and the angular contact ceramic ball bearing so that the magnetic suspension bearing is no longerlimited by the current rigidity.

The invention relates to a permanent magnet gyro motor with double stators and a through-hole bearing. The permanent magnet gyro motor comprises the stators, a rotor, two thrust plates and a shaft, wherein the shaft is coaxially sleeved in a bearing hole of a rotor bearing cover; the two thrust plates are respectively arranged at the left and right ends of the shaft according to a working manner of a hydrodynamic gas-lubricated bearing, and are fixed by inner nuts; the left end and the right end of the rotor are respectively provided with a stator; and the two stators are fixed on a shaft by outer nuts. The permanent magnet gyro motor is scientific in design, and reasonable in structure. According to the technology, the aim that the three-phase permanent magnet gyro motor (with the double stators and the through-hole type hydrodynamic gas-lubricated bearing) of a position-free sensor is applied in the field of gyros can be realized, so that the precision of the gyro and an inertial navigation system can be obviously improved, and the permanent magnet gyro motor is advanced in technology, and fills the technology blank in China.

The invention discloses a buckling induction brace with a circumferential-direction trapezoidal induction unit at the end. The buckling induction brace comprises a restrained section and energy consumption sections and further comprises a brace straight section. The energy consumption sections are arranged at the two ends of the brace straight section. Each energy consumption section comprises at least one circumferential-direction trapezoidal induction unit in the axial direction of the buckling induction brace. According to the circumferential-direction trapezoidal induction unit, m circumferential-direction trapezoidal subunits are arranged in the circumferential direction sequentially to form a space body with the section of a polygon. Each circumferential-direction trapezoidal subunit is a space body formed by folding four isosceles-trapezoid plates located in the same plane in a two-to-two collineation mode. The buckling induction brace maintains elasticity under the action of a small earthquake and enters a yield stage under the action of a medium earthquake or a large earthquake, and the good hysteretic energy consumption performance of the buckling induction brace can also achieves an effect of a damper. Compared with a traditional buckling restrained brace, the buckling induction brace reduces the workload of site construction work, and energy conservation and environment protection are achieved.

The invention discloses a buckling induction support with variable-length double-layer concave induction units at the end. The support comprises a constraint segment, energy dissipation segments and a straight support segment. The energy dissipation segments are mounted on the two ends of the straight support segment. Each energy dissipation segment is formed by at least one variable-length double-layer concave induction unit in the axial direction of the support. Each variable-length double-layer concave induction unit is a space body formed by sequentially arranging m variable-length double-layer concave subunits in the circumferential direction, wherein the section of the space body is a regular polygon. Each variable-length double-layer concave subunit is a space body formed by folding six triangular plates and six trapezoidal plates in the same plane. The buckling induction support keeps elasticity under the work of small earthquakes and enters a buckling stage under the work of medium earthquakes or major earthquakes, and the buckling induction support can achieve the effect of a damper due to the good hysteretic energy dissipation performance. Compared with a traditional buckling constraint support, the workload of on-site construction is reduced in the manufacturing process, and energy conservation and environment protection are achieved.

The invention discloses a buckling induced brace provided with length-variable pineapple type induction units at the end parts. The brace comprises a restraint section and an energy dissipation section and further comprises a flat brace section, wherein the energy dissipation section comprises at least one length-variable pineapple type induction unit in the axis direction of the brace; each length-variable pineapple type induction unit is a space body which is formed by arranging m length-variable pineapple type subunits in the annular direction sequentially and has a section of a 2m-regular polygon, and each length-variable pineapple type subunit is a space body formed by folding six isosceles triangle boards in the same plane. With the adoption of the buckling induced brace provided with the length-variable pineapple type induction units at the end parts, the buckling induced brace keeps elasticity under the action of small earthquakes and enters a yield stage under the action of medium earthquakes or large earthquakes, and the buckling induced brace can realize the effect of a damper by the aid of good hysteretic and energy dissipation performance. Compared with a conventional buckling restrained brace, the buckling induced brace has the advantages that workload for site operation is reduced in the aspect of a manufacturing process and energy conservation and environmental protection are realized.

The invention discloses a connecting assembly installed between a vehicle body and an automobile suspension, comprising an outer bracket and an inner bracket, wherein the outer bracket is sleeved on the outer side of the inner bracket; an annular through hole is formed between the inner bracket and the outer bracket, and a first elastic vibration isolator and a second elastic vibration isolator are arranged in the annular through hole at intervals. The first elastic vibration isolator is fastened between the outer bracket and the inner bracket; an outer surface of the second elastic vibrationisolator is fastened to an inner surface of the outer bracket, and a preset annular gap is provided between the inner surface of the second elastic vibration isolator and the outer surface of the inner bracket. The invention also discloses a vehicle body. The invention discloses a connecting assembly and a vehicle body, which are simple in structure, low in cost, reliable in connection, convenientto install and use, and can improve the ratio of the radial stiffness and the axial stiffness of the connecting assembly, so as to meet the higher performance requirements of the vehicle for comfortand maneuverability.

The invention discloses an energy-consuming type buckling induction support with a variable-angle four-fold induction unit at the end. The energy-consuming type buckling induction support includes a restrained section and energy-consuming sections and further includes a supporting straight section, the energy-consuming sections are arranged at the two ends of the supporting straight section, each energy-consuming section is composed of at least one variable-angle four-fold induction unit in the axial direction of the support, and one variable-angle four-fold induction unit is a space body with the regular-polygon-shaped section, wherein the space body is formed by sequentially arranging m same variable-angle four-fold subunits in the ring direction and each variable-angle four-fold subunit is a space body formed by folding four trapezoidal plates in the same plane. Under the effect of a small shock, the energy-consuming type buckling induction support keeps elasticity, under the effects of a moderate or strong shock, the buckling induction support enters a yield stage, and the support has good stagnation and energy-consuming performance and has the effect of a damper. In the preparation, the addition of a sleeve on the outer part of a core energy-consuming member, grouting and other processes are voided, and the preparation is convenient to implement.

The invention discloses a connecting assembly installed between a vehicle body and an automobile suspension, comprising an outer bracket and an inner bracket, wherein the outer bracket is sleeved on the outer side of the inner bracket; an annular through hole is formed between the inner bracket and the outer bracket, and a first elastic vibration isolator and a second elastic vibration isolator are arranged in the annular through hole at intervals. The first elastic vibration isolator is fastened between the outer bracket and the inner bracket; an outer surface of the second elastic vibrationisolator is fastened to an inner surface of the outer bracket, and a preset annular gap is provided between the inner surface of the second elastic vibration isolator and the outer surface of the inner bracket. The invention also discloses a vehicle body. The invention discloses a connecting assembly and a vehicle body, which are simple in structure, low in cost, reliable in connection, convenientto install and use, and can improve the ratio of the radial stiffness and the axial stiffness of the connecting assembly, so as to meet the higher performance requirements of the vehicle for comfortand maneuverability.

The invention discloses a buckling induction support with a combined depressed inducing unit in the end part. The buckling induction support comprises a bound segment and an energy consumption section, the buckling induction support further comprises a supporting straight segment, wherein the energy consumption section is arranged at two ends of the supporting straight segment, and is composed of at least one combined depressed inducing unit in a supporting axial direction, each combined depressed inducing unit is a space body of which a cross section is a regular polygonalm and is formed by sequential arrangement of m combined depressed subelements in a circumferential direction, and each combined depressed subelement is a space body which is folded by two trapezoidal plates and eight triangle plates at a same plane. According to the buckling induction support with the combined depressed inducing unit in the end part, under the action of small seisms, the buckling induction support can maintain elasticity, while under middle seisms or a large earthquake, the buckling induction support then enters into a buckling stage, and good hysteretic dissipation capacity of the buckling induction support plays a role of a damper. Compared with a traditional buckling induction support, the buckling induction support with the combined depressed inducing unit in the end part reduces field operation workload, and is energy-saving and environmentally friendly.

The invention relates to a turntable bearing for a large-size celestial observation device, comprising an outer ring (1), an O-shaped seal ring (2), a holder (3), a large ball (4), a small ball (5), a round clamp (6), an inner ring (7), a dust shield (8) and a round baffle plate (9). The turntable bearing adopts a double-reduced ball structure and a large contact angle structure, the large ball and the small ball respectively bear axial and radial load and ensures the axial rigidity of the turntable bearing, and the small ball adopts a straight-raceway full ball structure, increases radial carrying capacity and satisfies the requirements of a low friction moment simultaneously; the dust shield and the O-shaped seal ring are adopted to seal, a raceway contact point is provided with a radial lubricating hole to indirectly lubricate the turntable bearing, and the turntable bearing can be more sufficiently lubricated and has better lubricating and sealing performance. When the turntable bearing is installed, a bracket shaft is matched with a smallest spigot of the inner ring and is fixed on a bracket (11), and a rotating table (10) is fixed on the spigot of the upper end of the outer ring to regulate a direction angle.

The invention discloses a buckling induction support with the ends provided with annular Y-shaped induction units. The buckling induction support comprises constraining sections, energy consumption sections and a supporting straight section. The energy consumption sections are arranged at the two ends of the supporting straight section and each composed of at least one annular Y-shaped induction unit in the axial direction of the support. Each annular Y-shaped induction unit is a space body which is formed by sequentially arranging m annular Y-shaped sub units in the annular direction, and the section of the space body is a regular m polygon. Each annular Y-shaped sub unit is a space body formed by collinearly folding two triangular plates and two trapezoidal plates located in the same plane correspondingly in pair. The buckling induction support keeps elasticity under the effect of small earthquakes, enters a yielding stage under the effect of medium earthquakes or large earthquakes, and can achieve the effect of a damper by means of the good hysteretic energy consumption performance of the support. Compared with traditional buckling constraint supports, by adoption of the buckling induction support, the workload of site construction operation is decreased, energy is saved, and the environment is protected.

The invention discloses an energy consumption type buckling induction support with the ends provided with changeable-length four-fold type induction units. The energy consumption type buckling induction support comprises constraint sections, energy consumption sections and a supporting straight section. The energy consumption sections are arranged at the two ends of the supporting straight section and each composed of at least one changeable-length four-fold type induction unit in the axial direction of the support. Each changeable-length four-fold type induction unit is a space body formed by sequentially arranging m identical changeable-length four-fold type sub units in the circumferential direction, and the section of the space body is a polygon. Each changeable-length four-fold type sub unit is a space body formed by folding four trapezoidal plates in the same plane. The energy consumption type buckling induction support keeps elasticity under the effect of a small earthquake and enters a yielding stage under the effect of a medium earthquake or a large earthquake, and the effect of a damper can be achieved by means of the good hysteretic energy consumption performance of the support; and compared with traditional buckling constraint supports, by adoption of the support, the workload of site construction operation is decreased, energy is saved, and the environment is protected.

The invention discloses a buckling inducing support with middle sunken type inducing unit at end part thereof, comprising a restriction section and an energy consumption section. The buckling inducing support further comprises a straight support section; the energy consumption section is arranged at both ends of the straight support section and composed of at least one middle sunken type inducing unit along the axial line direction of the support; the middle sunken type inducing unit is a space body with positive m-polygonal section by m middle sunken type subunits orderly along the annular direction; the middle sunken type subunits are the space body formed by folding two trapezoid blocks and four triangular plates on the same one plane in the form of two common lines. The buckling inducing support can keep elasticity under small vibration; the buckling inducing support enters the buckling stage under the medium or big vibration, and the good hysteretic energy consumption performance can play the effect of a damper. Compared with the traditional buckling restriction support, the buckling inducing support reduces the work load of the field construction, saves energy and protects environment.

The invention discloses a buckling induction support with variable-length double-layer concave induction units at the end. The support comprises a constraint segment, energy dissipation segments and a straight support segment. The energy dissipation segments are mounted on the two ends of the straight support segment. Each energy dissipation segment is formed by at least one variable-length double-layer concave induction unit in the axial direction of the support. Each variable-length double-layer concave induction unit is a space body formed by sequentially arranging m variable-length double-layer concave subunits in the circumferential direction, wherein the section of the space body is a regular polygon. Each variable-length double-layer concave subunit is a space body formed by folding six triangular plates and six trapezoidal plates in the same plane. The buckling induction support keeps elasticity under the work of small earthquakes and enters a buckling stage under the work of medium earthquakes or major earthquakes, and the buckling induction support can achieve the effect of a damper due to the good hysteretic energy dissipation performance. Compared with a traditional buckling constraint support, the workload of on-site construction is reduced in the manufacturing process, and energy conservation and environment protection are achieved.

The invention discloses a buckling induction support with the ends provided with oblique spiral induction units. The buckling induction support comprises constraining sections, energy consumption sections and a supporting straight section. The energy consumption sections are arranged at the two ends of the supporting straight section and each composed of at least one oblique spiral induction unit in the axial direction of the support. Each oblique spiral induction unit is a space body formed by sequentially arranging m oblique spiral induction sub units in the oblique direction, and the section of each space body is a spiral line. Each oblique spiral induction sub unit is a space structure formed by folding two triangular plates in the plane. The elasticity of the buckling induction support is maintained under small earthquake action, enters a buckling stage under middle earthquake or large earthquake action, and can further achieve the effect of a damper through the good hysteric energy consumption performance of the buckling induction support. Compared with traditional buckling constraining supports, by adoption of the buckling induction support, the site construction operation workload is decreased, and energy saving and environmental protection are achieved.

The invention discloses a buckling induction brace with lengthened pineapple-shaped induction units at the ends. The buckling induction brace comprises a restrained section and energy consumption sections and further comprises a brace straight section. The energy consumption sections are arranged at the two ends of the brace straight section. Each energy consumption section comprises at least one lengthened pineapple-shaped induction unit in the axial direction of the brace. Each lengthened pineapple-shaped induction unit is a space body, with the section of a regular polygon, formed by arranging m lengthened pineapple-shaped subunits sequentially in the circumferential direction. Each lengthened pineapple-shaped subunit is a space body formed by folding four triangular plates and two trapezoidal plates which are in the same plane. The buckling induction brace maintains elasticity under the action of a small earthquake and enters a yield stage under the action of a medium earthquake or a large earthquake, and the good hysteretic energy consumption performance of the buckling induction brace can also achieves an effect of a damper. Compared with a traditional buckling restrained brace, the buckling induction brace reduces the workload of site construction work, and energy conservation and environment protection are achieved.

The invention discloses a mounting structure of a concentric thin-wall hollow shaft and a main hand tool. The mounting structure of the concentric thin-wall hollow shaft comprises an electric shell; a hollow flange shaft which is in clearance fit with the electric shell is arranged in the electric shell, and a plurality of concave parts which are arranged at intervals are arranged on the inner side face of the lower end of the electric shell; and the lower end of the flange shaft is an inserting part corresponding to the concave part, and the arc length corresponding to the inserting part is smaller than the arc length corresponding to the concave part. According to the mounting structure of the concentric thin-wall hollow shaft, the solid parts of the electric shell and the flange shaft are overlapped in the radial direction and are evenly distributed in the circumferential direction in a staggered mode, the axial rigidity of the electric shell and the flange shaft is guaranteed, the boundary dimension is reduced, and it can be guaranteed that the bending strength of the electric shell and the bending strength of the flange shaft in all directions are roughly equal.

The invention discloses a bending induction support with a circumferential double-layer concave type induction unit at an end part. The bending induction support comprises a constraint section, an energy consumption section and a supporting flat-straight section, wherein the energy consumption section is arranged at two ends of the supporting flat-straight section and comprises at least one circumferential double-layer concave type induction unit along the axial direction of the support; and the circumferential double-layer concave type induction unit is a space body which is composed of m circumferential double-layer concave type subunits arranged sequentially along a circumferential direction and has a regular polygonal cross section, and each circumferential double-layer concave type subunit is a space body which is formed by folding six triangular plates and six trapezoidal plates in the same plane. The bending induction support disclosed by the invention keeps elasticity under the action of small shock, and enters a yield phase under the action of medium shock or big shock, and the good hysteretic energy consumption property of the bending induction support can achieve an effect of a damper. Compared with the conventional bending restraint support, the bending induction support disclosed by the invention reduces the workload of site construction operation, and is energy-saving and environment-friendly.

The invention discloses a buckling induced support with concave-corner type induction units at the end. The buckling induced support includes a bound segment and energy consumption segments and further includes a support flat segment; the energy consumption segments are arranged at the two ends of the support flat segment, each energy consumption segment is formed by at least one concave-corner type induction unit in the axial direction of the support, each concave-corner type induction unit is a space body with the section shaped like an equilateral polygon and is formed by arranging m concave-corner type subunits in the circumferential direction in sequence, and each concave-corner type subunit is a space body formed by mutual collinear folding of two trapezoidal plates and four triangle plates located in the same plane. Under the action of small shock, the buckling induced support keeps elastic, under the action of middle shock or great shock, the buckling induced support enters a yield stage, and the good hysteresis energy-consumption performance makes the support play a role as a damper. Compared with a traditional buckling restrained support, the buckling induced support reduces the workload of field construction work, saves energy and achieves environmental protection.