41results about How to "Reliable stiffness" patented technology

An apparatus for testing stiffness characteristics such as modulus of elasticity E of an article such as a piece of lumber moving in a conveying direction transverse to the testing axis, comprises a bearing unit capable of contacting the piece of lumber at two spaced apart portions thereof. There is provided a first deflecting unit including a first working element being normally disposed in a first static position relative to the conveying path for applying a first thrust against a loaded area on the article at an intermediary portion thereof located between the spaced apart portions, to produce an article deflection of a first magnitude. Each working element defines a loading surface extending substantially parallel to the article-conveying path. There is further provided a second deflecting unit including a second working element being normally disposed in a second static position relative to the conveying path for applying a second thrust against a loaded area of the article intermediary portion, to produce an article deflection of a second magnitude, wherein the second position differs from the first position relative to the conveying path by a differential value. The apparatus further comprises load cells coupled to the bearing unit for generating signals indicative of respective magnitudes the first and second thrusts as applied by first and second deflecting units, and a computer for deriving from such signals and differential value an indication of the stiffness of the article, such as modulus of elasticity E.

A rotor for a spinning reel is configured to rotate about a spool shaft, and includes a tubular portion and a plate-shaped portion. The tubular portion is disposed away from the spool shaft at a predetermined interval. The plate-shaped portion includes a radially outer part and a radially inner part. The radially outer part is integrated with an inner peripheral part of the tubular portion. The radially inner part extends from the radially outer part toward the spool shaft. The radially outer part has a smaller thickness than at least a part of the radially inner part.

The invention discloses a driving property test device for a hinge line of a solar wing. The device comprises a base, a shift rod, a rotary bracket a, a sensor seat, a cable fixing seat, a fixed bracket, a double-pulley assembly, a loading heavy block, a vertical column assembly, a fixed seat, a force measuring sensor, a steel wire rope and a movable pulley assembly, wherein the interior of the base is provided with a worm and gear speed reducer, the vertical column assembly is vertically and fixedly arranged at the top of the base, and the double-pulley assembly is fixedly arranged on the vertical column assembly. The test device has the advantages that the unfolding and folding processes of the solar wing can be simulated; the rotation angle and the torque parameter can be tested in real time, and the accurate and reliable test data, such as driving torque, friction drag torque and rigidity, can be obtained; and the reliability and the development level of space application equipment are improved.

The invention discloses a movable prestress supporting system and a using method thereof. The system is characterized by comprising a main frame type steel support, a backrest counter-force seat, an inverted arch counter-force seat, a construction side counter-force seat, an arch bottom counter-force seat, a supporting protection support bottom plate, an under-plate movable wheel rail and a wheelrail vertical telescopic device; the main frame type steel support comprises eight main structure columns which form a rectangle; the backrest counter-force seat comprises a transverse telescopic backrest counter-force seat support and a backrest stress buffer block; the inverted arch counter-force seat comprises a vertical telescopic inverted arch counter-force seat support and an inverted arch stress buffer block; the construction side counter-force seat comprises a transverse telescopic construction side counter-force seat support and two symmetric construction side stress buffer blocks; the arch bottom counter-force seat comprises a vertical telescopic arch bottom counter-force seat support and an arch bottom stress buffer block; the supporting protection support bottom plate is fixedly arranged at the lower end of the main structure column. The system has the advantages of being movable and capable of achieving quick supporting, providing recoil force for a contact channel headingmachine and achieving longitudinal and uniform load distribution.

The invention relates to a cooling and sterilizing process for a protein preparation and a special horizontal type shaking table thereof. In the prior art, a sterilizing device for the protein preparation has the defects of poor stability and difficult control of parameters. The special shaking table comprises a cycloidal pin wheel speed reducer, a driving motor and a shaking table, wherein an eccentric outer gear, an eccentric inner gear, a gear shaft sleeve and a left gear base are fixedly arranged on the cycloidal pin wheel speed reducer and an output shaft of the driving motor; the left gear base is connected with one end of a regulating lead screw; the other end of the regulating lead screw is connected with a right bearing base; a shaking amplitude adjustment device is connected with the bearing base and one end of a shaking oscillating bar; the other end of the shaking oscillating bar is connected with one end of a rotating shaft of the shaking oscillating bar; and the other end of the rotating shaft of the shaking oscillating bar is connected with the shaking table by a transmission device in a shaking table cylinder body. The special horizontal type shaking table has a reasonable and compact structure, is reliable in strength, rigidity and toughness of key positions, small in assembly stress of parts and high process performance, process parameters are easy to control, and the optimal bacteriostatic effect can be achieved.

The invention discloses a circular-seam automatic-welding inner-supporting device for a quick-disassembly-type large-scale storage tank. The device comprises an adjustable clamping shaft base arranged horizontally, a long support rod and a short support rod, wherein one end of the long support rod passes through a short stroke cylinder and is connected with an outer-arc-shaped support block, and one end of the short support rod passes through a long stroke cylinder and is connected with an inner-arc-shaped support block; after the short stroke cylinder and the long stroke cylinder support the outer-arc-shaped support block and the inner-arc-shaped support block to open, the arc-shaped surfaces of the outer-arc-shaped support block and the inner-arc-shaped support block are positioned at the same circumference, and a gap is arranged between the outer-arc-shaped support block and the adjacent inner-arc-shaped support block. According to the circular-seam automatic-welding inner-supporting device, two groups of gas paths are used to control two groups of cylinders with different lengths respectively to achieve the independent telescopic movements of the outer-arc-shaped support block and the inner-arc-shaped support block. The circular-seam automatic-welding inner-supporting device has the advantages of being light in weight, reliable in rigidity, quick, simple and convenient to disassemble, stable and reliable in process of jacking and loosening, adjustable in jacking pressure of seam welding, and capable of being assembled repeatedly to use, and the device can meet the mass production of large-scale storage tanks and improve the welding efficiency.

The invention relates to an engine generator accommodating an engine (21) and a generator (22) inside a case (17). A first stationary handle (118) that extends in the width direction is mounted in the rear section of the case. A second stationary handle (119) is mounted on the upper front part of the case. A draw handle (125) is provided so as to swing in the vertical direction in relation to the second stationary handle. The second stationary handle is manually grasped and the engine generator is moved. The first and second stationary handles are grasped and the engine generator is lifted. The draw handle (125) comprises a support shaft (131) coaxially disposed in the second stationary handle (119); left and the right pivot arms (191,192) vertically and swingably disposed on the support shaft (131); and a movable handle (132) extending between the left and the right pivot arms. The first stationary handle (118) is arranged below the second stationary handle (119). The draw handle is pulled to move the engine generator.

The present invention discloses a three-axial decoupling device with a pre-tightening structure. The three-axial decoupling device with the pre-tightening structure includes a slide rail, an X guide shaft, a Y guide shaft and a Z guide shaft; each guide shaft is arranged floatingly through a static pressure oil film layer formed by a corresponding first static pressure mechanism; and each first static pressure mechanism is provided with a pre-tightening screw, and one end of the pre-tightening screw is fixed to the first static pressure mechanism oppositely, and the other end of the pre-tightening screw is fixed to a static pressure mechanism at the same side or a static pressure mechanism at the other side oppositely. According to the three-axial decoupling device with the pre-tightening structure of the invention, a connection mode adopts the structural design of the pre-tightening screws. When the three-axial decoupling device is working, high-pressure oil is introduced into the three-axial decoupling device, high-pressure oil films are generated at two oil film layers; the pre-tightening forces of the pre-tightening screws can cancel tensile forces generated by the high-pressure oil films to the outside, and therefore, the gap of the oil film layers and the rigidity of the oil film layers can be ensured, and the operational stability and durability of the three-axial decoupling device can be improved. The invention also discloses a vibration table.

The invention discloses a three-plunger hydraulic diaphragm reciprocating pump. The pump comprises a transition plate having a front end surface, a back end surface and multiple side surfaces, three pump heads and a power end; a first hydraulic passage, a second hydraulic passage and a third hydraulic passage which are arranged in parallel are arranged at the front end of the transition plate and communicate with the power end through cylinder sleeves; a first pump head connection port, a second pump head connection port and a third pump head connection port which are connected with the three pump heads are formed in the back end of the transition plate; the second pump head connection port is located in the back end surface of the transition plate; and the first pump head connection port and the third pump head connection port are located in the opposite side surfaces of the back end of the transition plate. The novel three-plunger hydraulic diaphragm reciprocating pump is designed, the three hydraulic diaphragm pump heads are arranged in the shape of a left-center-right U-shaped surface, the transverse size is substantially reduced, the U-shaped-surface transition connecting plate can be machined by the aid of a lathe, the distance of communicating runners for the pump heads and the cylinder sleeves is shortened, and the machining technology is simplified.