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153results about How to "Improve connection rigidity" patented technology

Engine turbine disc cavity structure with pre-rotation nozzle and flow guiding disc

The invention discloses an engine turbine disc cavity structure with a pre-rotation nozzle and a flow guiding disc. The engine turbine disc cavity structure comprises a turbine disc and further comprises the flow guiding disc and a pre-rotation nozzle ring which are arranged in front of the turbine disc. High-pressure low-temperature two-strand airflow is divided into two strands after entering apre-rotation airflow cavity through the pre-rotation nozzle ring. One strand of airflow passes through pre-rotation cool air receiving holes evenly distributed in the circumferential direction of theflow guiding disc and enters an axial ventilation hole in the bottom of a turbine disc mortise along a radial flow guiding plate on the rear side of the flow guiding disc. The other strand of airflowpasses through a sealed grid tooth ring on the flow guiding disc, and after the other strand of airflow is pre-rotated and pressurized through an inclined flow guiding plate above the front side of the flow guiding disc and is converged with cool air from cool air impact holes evenly distributed in the circumferential direction of the installing edge of a guiding device, the other strand of airflow enters a main runner through a turbine rotor and stator gap. By means of the engine turbine disc cavity structure, the relative total temperature of cool air can be reduced, convection heat exchangeof cool air and the turbine disc is enhanced, pre-rotation pressurizing is conducted on the wheel edge seal gas, the seal effect is improved, and seal gas and main flow mixing losses are reduced.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

Turbine blade vibration test tool and turbine blade clamping method

The invention discloses a turbine blade vibration test tool and a turbine blade clamping method, the vibration test tool comprises a main body, the main body is internally provided with an opening alignment chute inner cavity and a force application step hole, the included angle of the opening alignment chute inner cavity is the same as the included angle of blade tenon teeth, and the opening alignment chute inner cavity is used for placing a clamping block; the clamping block is provided with a clamping mortise and a large arc transition hollow elastic section, one end of the clamping block is provided with a threaded hole communicated with the hollow elastic section, and the threaded hole is used for installing a stress application screw. The other end of the connecting rod is connectedwith the nut; the stop block tightly abuts against the tenon bottom of the blade under the action of the adjusting bolt. The stress application screw penetrates through a stress application stepped hole in the main body and extends into the threaded hole of the clamping block, the stop block penetrates through the main body and the clamping block, and an adjusting bolt used for adjusting the position of the stop block is installed on the main body. According to the structure, the blade tenon is fixedly held through the combined action of pressing and jacking, so that the attachment area of thetenon tooth surface of the blade and a tool mortise is large, the contact is uniform, the fixedly holding rigidity is high, and the consistency is good.
Owner:AECC AVIATION POWER CO LTD

High-precision and high-efficiency injection molding machine

The invention provides a high-precision and high-efficiency injection molding machine. The high-precision and high-efficiency injection molding machine comprises a machine body and further comprises amovable mold plate, a fixed mold plate and an injection mechanism. A plurality of pull rods are mounted between the movable mold plate and the fixed mold plate. A combined contracting brake mechanismcorresponding to the pull rods is mounted on the movable mold plate. A nitrogen auxiliary injection device connected with the injection mechanism is mounted at the side end of the machine body. During mold closing, the combined contracting brake mechanism locks the pull rods. the combined contracting brake mechanism comprises a contracting brake cylinder and a plurality of mold locking pistons. The contracting brake cylinder is connected with one mold locking piston. A piston linkage connecting rod is eccentrically hinged between the two adjacent mold locking pistons. The high-precision and high-efficiency injection molding machine provided by the invention is high in mold replacing speed, good in combined mold locking effect and high in reliability and safety coefficient. The whole high-precision and high-efficiency injection molding machine is high in starting speed, stable in injection rate, high in repeating precision, large in mold containing space, high in production efficiencyand stable and reliable in operation.
Owner:宁波力松注塑科技有限公司

Large-scale paraboloid antenna surface operation angle control and loading measurement system

The present invention discloses a large-scale paraboloid antenna surface operation angle control and loading measurement system. The large-scale paraboloid antenna surface operation angle control and loading measurement system comprises a high-strength support (1), a rotating head (2), a reinforcing cover (3), a handle combination (4) and a theodolite (5). The rotating head (2) is installed on the high-strength support (1) through threaded connection; the reinforcing cover (3) is installed on the rotating head (2) through threaded connection; the theodolite (5) is installed on the rotating head (2) through threaded connection; the theodolite (5) is located in the reinforcing cover (3); the handle combination (4) is installed on the reinforcing cover (3) through threaded connection; and the handle combination (4) is connected with the theodolite (5). The large-scale paraboloid antenna surface operation angle control and loading measurement system is able to measure and control the operation angle of the large-scale paraboloid antenna surface, eliminate measurement errors caused by factors such as wind loading, dead weight, positioning error and the like, and ensure the measurement precision. Moreover the large-scale paraboloid antenna surface operation angle control and loading measurement system is able to effectively fix a theodolite and allow the theodolite to perform inclination measurement which cannot be realized in the prior art.
Owner:CHENGDU JINJIANG ELECTRONICS SYST ENG

Side connecting component for automobile floor

The invention discloses a side connecting component for an automobile floor. In the side connecting component for the automobile floor, a body is an integrally punched component; and the side connecting component for the automobile floor is characterized in that: a main plane of the body is rectangular; the upper part of the main plane is bent backwards and rightwards to form an upper connecting part; a right triangular supporting plate of which the vertex angle is downward is vertically connected on the right side of the main plane; the upper part of the right triangular supporting plate is bent rightwards to form a right connecting part; a left triangular supporting plate of which the vertex angle is downward is vertically connected on the left side of the main plane; the upper part of the left triangular supporting plate is bent leftwards to form a left connecting part; a concave lower connecting part is connected with the lower part of the right triangular supporting plate, the lower part of the left triangular supporting plate and the lower edge of the main plane; and the upper connecting part, the right connecting part, the left connecting part and the lower connecting part are planes. By the side connecting component for the automobile floor, the connecting rigidity and the connecting strength between a chair installing component and the floor are improved; through experimental verification, the local mode of a chair installing position is improved; and through fixture sample vehicle verification, the structural form and the installation mode of the side connecting component for the automobile floor are applicable to various automobile models.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Combinative structure slow cooker

The invention discloses a combinative structure slow cooker, which comprises a faceplate body. The middle of the faceplate body is provided with at least three parallelly arranged cooker holes and the left side and right side thereof are both provided with flange bodies extending downwards; the cooker holes are all internally embedded with cooker bodies, the front face part of the faceplate is assembled with a front faceplate, and the assembly edge between the front faceplate and the faceplate body is embedded with a front sealing strip; the back face part of the faceplate body is assembled with a back faceplate, and the assembly edge between the back faceplate and the faceplate body is embedded with a back sealing strip; a lining medium plate is connected at the middle position between the back faceplate and the front faceplate; the lower part of the faceplate body is assembled with a bottom plate which is also assembled with the lower edge of the back faceplate and the lower edge of the front faceplate; three parallel cooker bodies are designed with simple structure and are convenient and quick for installation; an electrical heating mode is used to heat each cooker that is strong in operation independence and beneficial to energy saving; a horizontal manual supporting plate and a lining side plate are arranged to enhance the connection rigidity and firmness between the front faceplate and the back faceplate; and a casing handle is assembled to facilitate carrying.
Owner:浙江亿达控股集团有限公司
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