72results about How to "Good structure and craftsmanship" patented technology

The invention provides a vertical type integrated thrust vector testing device, belongs to the field of sensing and measurement and control and especially relates to an engine thrust vector test control system. The structure of the device mainly comprises a loading unit, an upper cylinder, a dynamometer, a lower cylinder, a guided positioning unit, an adapter flange, a hexagon socket-head cap screw and a reinforcing rib. The device has an advantage that the vertical type integrated structure is adopted. The device has high rigidity, high inherent frequency and high dynamic force measurement accuracy. Due to the vertical type structure, the influence of gravity factor of structure members when horizontally arranged on the test precision is eliminated. Thus, there is no error accumulation. The guided positioning unit is convenient to adjust, a loading measuring head can be adjusted to any position in a loading plane, and measurement of thrust vector/moment within different measuring ranges can be realized.

The invention discloses a self-calibrating inertial positioning and orientating device, which comprises a base, a framework, a sliding damping component, an outer shaft system, an inner shaft system, an outer shaft locking component and an entire machine locking component, wherein the outer shaft system is arranged on the framework; the inner shaft system is arranged on the outer shaft system; the outer shaft locking component is arranged on the outer shaft system; the entire machine locking component is arranged on the base; the framework is arranged on the bottom surface of the base through the sliding damping component; the framework is in locking fit with the side face of the base through the entire machine locking component; the outer shaft system is in locking fit with the framework through the outer shaft locking component; an inertial group is arranged on the inner shaft system; and a compression component for compressing and fixing the inertial group is arranged between the outer shaft system and the inner shaft system. An inertial group self-calibrating system is formed by the outer shaft system and the inner shaft system; the inner shaft system can be orientated by rotating around a vertical shaft; and the inertial group is conveniently linked with a carrier by locking the inner and outer shaft systems and the framework, so that inertia positioning and posture conveying functions can be realized. According to the device, inertia positioning and orientating and conveying of a posture reference are realized, and inertial group parameters are calibrated automatically.

The invention discloses a full plastic closestool. The full plastic closestool comprises a main body of a base, a liner, a siphon, an upper cover of the base, a base plate of the base, stuffing and a water tank of the closestool; the structure can make the manufacturing of the full plastic closestool possible and has good manufacturability; with the full plastic structural design, the whole of the closestool becomes light and environment-friendly and can be regenerated and utilized, thereby providing a comfortable and reliable closestool for people; and the stuffing is filled between the main body of the base and the liner and can enhance integrated strength and reduce noise of water rinsing.

The invention provides a long-focus type panoramic annular imaging lens. The long-focus type panoramic annular imaging lens is totally composed of eleven spherical lenses, and comprises a panoramic annular lens assembly and a transferring lens assembly. The panoramic annular lens assembly comprises a first lens, a second lens and a third lens coaxial and arranged sequentially from an object space to an image space, and is of a triplet panoramic annular lens structure. The transferring lens assembly is composed of eight lens including a negative meniscus lens, a positive lens and two doublets. The long-focus type panoramic annular imaging lens satisfies f-theta object-image relation, and has the advantages of high resolution, super large field of view (360 degrees in the horizontal direction and 60 degrees in the vertical direction), high imaging quality and the like; adopted glass is ordinary optical glass excluding special glass and calcium fluoride; the lens structure is good in manufacturability to the benefit of processing and reduction of cost.

The invention relates to a jacking type sand core microwave drying device. The drying device mainly comprises a microwave drying cavity, a jacking assembly and a sand core tray, wherein the jacking assembly comprises two supporting stand columns and a jacking sealing bracket arranged between the two supporting stand columns; a vertical linear rail is arranged on each supporting stand column; the jacking sealing bracket is jacked and descended on the supporting stand columns through the vertical linear rails; an inner roller way is arranged on the jacking sealing bracket, and is used for beingmatched with a outer roller way to carry and transport the sand core tray; the microwave drying cavity is located above the supporting stand columns; the bottom of the microwave drying cavity is provided with a feeding opening; when the jacking sealing bracket ascends, the jacking sealing bracket is in sealing connection with the feeding opening. Through matching and sealing of the jacking sealingbracket and the upper microwave drying cavity, microwave leakage prevention is carried out, the problem of microwave leakage is effectively solved, and 3D printing sand core flow coating and automatic drying after dip coating are efficiently realized.

The invention relates to an interlinked indexing and positioning device and belongs to the technical field of machining. The operating principle and process include that an air cylinder pushes a crank, the crank drives an intermediate sleeve to rotate clockwise, and a collision block on the intermediate sleeve pushes a swing arm to drive a steel wire rope to pull out a positioning pin. When the positioning pin is pulled out, a pawl of the intermediate sleeve is clamped on clamping grooves of a ratchet during rotation so as to drive the ratchet to rotate, and the ratchet directly drives an indexing disc to rotate by a certain angle. When indexing is finished, the positioning pin is inserted into a positioning hole of the indexing disc under the action of a spring to position the indexing disc. The air cylinder drives the crank, the intermediate sleeve and the pawl to return to the initial indexing position to prepare next indexing, and interlinked indexing and positioning are achieved by cycling the process. The interlinked indexing and positioning device can achieve indexing and positioning simultaneously and is energy-saving, small in occupied space, accurate and reliable.

The invention provides an internal reflection type catadioptric panoramic imaging lens. The internal reflection type catadioptric panoramic imaging lens comprises a catadioptric mirror group and a relay mirror group which are arranged in sequence. The catadioptric mirror group includes a first catadioptric lens and a second catadioptric lens which are arranged coaxially and arranged sequentially along a direction from the catadioptric mirror group to the relay mirror group, and the first catadioptric lens and the second catadioptric lens are connected by a connecting surface. Full-view ultra-wide-angle imaging is realized. An appropriate angle magnification is provided to expand the field of view. The catadioptric mirror group is a lens group, and can bear greater vertical field of view and relative aperture. The field of view and the aperture of the lens are large. The long after-work distance ensures the installation space of other parts. Moreover, the lens has the effects of compact structure, small size, and easy installation.

The invention discloses a die locking mechanism, wherein, a die moving guide rail pair is utilized to lead two die locking device to move in the opposite directions; a die locking guide rail pair is utilized to close pivoted arm connecting seats; a die locking oil cylinder is taken as driving power and pivoted arms are used for transmission so as to achieve the closure or separation of the two pivoted arm connecting seats, and the two pivoted arm connecting seats can move synchronously with the help of a synchronous gear device; in addition, an anticollision rack and an anticollision block are additionally arranged on the die locking mechanism, so that the safety can be ensured when the die locking mechanism operates. Due to the effects of the mechanical principle and the guide rail pair,the die locking mechanism ensures that the stress central point is not changed when templates on the pivoted arm connecting seats act on a die, the templates are not easy to be deformed even if a large-scale die is closed, and the guide rail pair and a corresponding slide block are less vulnerable to abrasion; the pivoted arm-type closing is adopted, so that the closing force of the pivoted arm connecting seats can begreatly increased further, the die locking force is enough, the two pivoted arm connecting seats can move synchronously and can be closed synchronously with the help of the synchronous gear device at the same time, and the product quality can be enhanced greatly.

The invention relates to a turning clamp. The structure is that a main framework is mounted on the base; a turning inner tube is mounted in the main framework; a workpiece is fixed on the turning inner tube; the turning inner tube and the workpiece are respectively subjected to axial positioning, end face positioning and angular direction positioning; the turning inner tube and the main framework are respectively subjected to axial positioning, end face positioning and angular direction positioning. The turning clamp is a tool for processing a butt-joint molded surface of a worm wheel cover, so that requirements on the coaxiality, the size and the angular direction position of the molded surface butted to the worm wheel cover are guaranteed; the turning clamp is convenient to dismount and mount, high in practicability and high in processing efficiency.

The invention relates to a sleeving valve type hydraulic breaking hammer. The sleeving valve type hydraulic breaking hammer comprises a front body, a middle cylinder and a nitrogen chamber which are sequentially arranged from front to back. A drill rod is arranged inside the front body in the axial direction. The middle cylinder is internally provided with a piston, a sleeving valve and a hydraulic oil path system, wherein the piston is in transmission connection with the drill rod; the sleeving valve is arranged outside the piston in a sleeving mode and matched with the inner wall of the middle cylinder; and the hydraulic oil path system drives the piston and the sleeving valve to move back and forth in the axial direction of the middle cylinder. In the working state, the piston drives the drill rod to move back and forth in the axial direction of the middle cylinder under driving of the hydraulic oil path system, and accordingly hard objects are broken. Compared with the prior art, the sleeving valve type hydraulic breaking hammer is simple in structure, the sleeving valve is directly arranged on the piston in the sleeving mode, a valve element is omitted, the structure is more compact, and structure manufacturability is good; and since the travel stroke of the sleeving valve is short, the working efficiency is remarkably improved, and the demands of engineering application can be met.

The invention discloses a fork shrinkage type screw jack, comprising a lower supporting arm group and an upper supporting arm group, wherein each upper supporting arm and each lower supporting arm have similar geometry elements and are provided with the same U-shaped open slot and reinforcing framework respectively; an included angle of 126+/-5 degrees is formed between a symmetry plane of each U-shaped open slot formed by the upper supporting arm and the lower supporting arm and a ligature reference plane between the center lines of rotary shaft holes; a first side plate, a second plate, a reinforcing inclined plate, a clamping slot, a closed frame and a top plate are formed on an ejector header; and respective rotation pairs of the lower supporting arm group and the upper supporting arm group are formed through the rotation connection of a hinge block and a hinge nut at each U-shaped open slot. The fork shrinkage type screw jack has the beneficial effects that as each part and relevant structure elements are optimized, each rotation pair is enabled to be more reliable and have more excellent structure technological performance; and the reinforced ejector header structure causes a vehicle to be jacked more safely.

A non-circular stator internal ring curve single-acting vane pump belongs to the field of mechanical design in mechanical engineering, which is a hydraulic pump that the vane is geometrically sealed with the stator and that the vane is tightly jointed with the internal surface of the stator without external force. The stator internal ring curve in the invention is a non-circular closed curve: any straight line is made through the acnode of the non-circular closed curve, the length of the line segment formed by two intersection points of the straight line and the non-circular closed curve is always a definite value, and the polar equation of the non-circular closed curve is as follows: rho equals R plus F (theta); in the formula, rho is polar radius, theta is polar angle, R is constant; and in rectangular coordinate system, F (theta) is continuous periodic function and is symmetrical about the point (phi, 0), the cycle time T is equal to 2 phi, and theta belongs to (0, 2 phi). Compared with the existing vane pump, in the working process of the non-circular stator internal ring curve single-acting vane pump in the invention, the vane radial force is balanced without supplying high pressure oil through the root of the vane groove, that is, oil supply path is not needed; and the pump is simple in structure, and the manufacturing technology is convenient. The non-circular closed curve further can be used for vane hydraulic motors.

The invention provides a water pump assembly used for diesel engines. The water pump assembly used for the diesel engines comprises a belt pulley, a belt pulley hub, a water pump body, a water seal and an impeller which is matched with a volute of the water pump body, wherein the belt pulley hub is arranged in the belt pulley, and is fixedly connected with one end of the water pump body together with the belt pulley; a water pump bearing in the other end of the water pump body is fixedly provided with the water seal; the impeller is fixedly arranged on a shaft between the water pump bearing and the water seal; the other end of the water pump body is sealed by a pump cover. The water pump assembly used for the diesel engines, provided by the invention, is simple, compact and novel in structure, and the size of the water pump assembly is smaller than those of similar water pumps of other types; moreover, the water pump assembly can be conveniently arranged in various compact diesel engines; the water pump assembly is light in weight, small in pressure surge, stable to work, reliable in performance and long in service life.

The invention discloses a welding thermal cycle curve test device and an application method thereof. The welding thermal cycle curve test device is characterized in that a workpiece to be tested is placed at the upper opening of a support frame; a thermocouple is clamped on a clamping device; a driving device is used for driving a tightening device to move towards the upper opening of the supportframe, so that the measuring end of the thermocouple is pressed against the workpiece to be tested; and the driving device can be used for tightly pressing the measuring end of the thermocouple against a position to be tested of the workpiece to be tested, so that the thermocouple is prevented from deviating from a desired position in the welding process; the temperature measuring point is real and reliable; operation is easy and convenient; the thermocouple and a test board have good contact performance; and the test accuracy is improved. Through adoption of the device, radiation of arc lightto the human body is avoided. Moreover, the welding thermal cycle curve test device has the advantages of simple structure, and convenience in use and maintenance.

The invention discloses a sliding block and swing rod type precise numerical control rotary table. The sliding block and swing rod type precise numerical control rotary table comprises a fixed base, a driving mechanism, a swing rod mechanism and an output unit, wherein the driving mechanism, the swing rod mechanism and the output unit are installed on the fixed base. The driving mechanism is connected with the swing rod mechanism and drives the output unit to swing. The driving mechanism comprises a motor, a lead screw and a sliding plate. The motor is connected with the lead screw. The lead screw is connected with a linear guide rail. The sliding plate is arranged on the linear guide rail. The motor drives the lead screw to drive the sliding plate to reciprocate on the linear guide rail so as to provide power drive. According to the sliding block and swing rod type precise numerical control rotary table, synchronous swing of double output table tops is achieved, and the sliding block and swing rod type precise numerical control rotary table is good in structural manufacturability, small in machining and assembling difficulty, good in rigidity and wide in market prospect.

A novel digital servo hydraulic cylinder comprises a cylinder barrel and an upper cover. The upper cover is arranged at the upper end of the cylinder barrel, the cylinder barrel is placed on the leftside of a piston rod, the left side of the piston rod is provided with an arch-shaped oil return valve, a triangular spiral oil passing groove is formed in the oil cylinder inner wall at the lower endof the arch-shaped oil return valve, an oil return valve is arranged in the center position of the lower portion of the triangular spiral oil passing groove and disposed on a plunger, and a base plate is arranged at the lower end of the plunger. The novel digital servo hydraulic cylinder has the advantages of good structural machinability, small rotation angle, continuous control, quick response,good speed stability, high precision, great simplification of structure, and improvement on anti-pollution capacity of oil, and thus the structure of the novel digital servo hydraulic cylinder has advancement, reasonability and practicability, and development potential is great.

The invention discloses a micro-motion mechanism, which comprises a hand wheel, a support, a shaft sleeve, and a guide sleeve. A buffer layer is arranged inside the hand wheel, and a set screw and a washer are arranged between the hand wheel and the shaft sleeve. The bushing is provided with fixing screws, the bushing is provided with a screw rod, the bushing and the support are connected by screws, the guide bushing is provided with a guide rod, and the guide rod moves back and forth under the action of the screw rod. High sensitivity, the minimum moving amount meets the requirements of use, flexible and stable transmission, no lost motion and crawling, can maintain a stable position after braking, strong anti-interference ability, good quick response, and good structural and technological effects.

The invention relates to a plug for a switching device. The plug comprises two contact-use connection pieces, elastic pieces, a support and mounting plates, wherein the two contact-use connection pieces and the elastic pieces are used for forming a conducting loop, the support is used for mounting the two contact-use connection pieces, and the mounting plates are used for mounting the elastic pieces. The two contact-use connection pieces are arranged on the two sides of the support respectively, and the elastic pieces abut against the contact-use connection pieces and exert certain pressure on the contact-use connection pieces; the inner surfaces of the two sides of the two contact-use connection pieces form a first contact face in contact with a drawer seat busbar and second contact face in contact with a body busbar. When the plug is plugged in, the first contact face and the second contact face are in contact with the drawer seat busbar and the body busbar respectively, breakover of a circuit is achieved, the current is borne, the main function of a switch is achieved, when the current flows across the switching device, electric power is overcome through pressure of the elastic pieces on the contact-use connection pieces, and a power system can operate safely and effectively.

The invention relates to the technical field of special machining, in particular to an electric melting explosion special-shaped deep hole machining electrode. The electrode mainly comprises an electrode round hole machining section, an electrode special-shaped hole machining section and an electrode connecting section; the electrode is provided with a guide strip and a chip removal channel; and on one hand, the guiding role is provided for a special-shaped deep hole, and on the other hand, timely cooling can be achieved, so that chips separated by explosion in machining are discharged smoothly. The electrode belongs to organic combination of electric melting explosion and deep hole machining, and an innovative technological means is provided for the special-shaped deep hole which is hardto machine; the electrode has the advantages that the dimensional accuracy and positional accuracy of the special-shaped deep hole are improved, and the high machining quality is ensured; and meanwhile, the machining time is shortened, and the machining efficiency is improved greatly.