45results about How to "Reliable constraints" patented technology

A structure for the front part of a vehicle body includes left and right front side frames (40L, 40R) provided with at least left and right front bending sections (61L, 61R), left and right intermediate bending sections (62L, 62R), and left and right rear bending sections (63L, 63R). Due to a collision load (fs) applied to the front end of the vehicle body (11), the left and right front bending sections (61L, 61R) bend so as to protrude inward in the width direction of the vehicle and thereby grasp and restrain a power unit (20) from both sides in the width direction of the vehicle. The left and right intermediate bending sections (62L, 62R) are located at a distance rearward from the left and right front bending sections (61L, 61R). The left and right rear bending sections (63L, 63R) are located at a distance rearward from the left and right intermediate bending sections (62L, 62R), bend outward in the width direction of the vehicle due to the collision load (fs), and absorb collision energy when subjected to a collision with the power unit (20) which moves backward together with the left and right front bending sections (61L, 61R) due to the collision load (fs).

A loading tray 13 supports at least one thin plate safely and reliably. It comprises a first loading portion 18, provided on one side thereof, on which at least one thin plate is loaded; a second loading portion 19, provided on the other side thereof, fitted to the first loading portion 18 of adjacent loading tray 13 to form a housing space sealed off from the external environment, for sandwiching the thin plate within the housing space, and for loading the thin plate on the loading tray when the loading tray is placed upside-down; a hook 30, provided on one side thereof, for coupling with an adjacent loading tray 13; and a hook locking mechanism 31, provided on the other side thereof, for coupling with the hook 30 of an adjacent loading tray 13. As many loading trays 13 as the number of the thin plate is stacked to constitute a thin plate container 11. The thin plate container 11 can support the thin plate from both upper and lower sides.

The invention relates to a multi-station friction screw press which comprises a body, a multi-station mold, a slide block, a screw, a plurality of guide rails and a screw driving device, wherein the multi-station mold is arranged on the workbench of the body; the slide block is arranged above the multi-station mold; one end of the screw is inserted into the slide block and is rotatablely connected with the slide block, and the screw drives the slide block to move up and down; the plurality of guide rails are arranged on the body and are used for guiding the slide block, and the distance amongthe guide rails is suitable for the slide block to slide among the guide rails; the screw driving device is connected with the other end of the screw and can drive the screw to rotate forward or backward and simultaneously rise or fall; the ratio of the longitudinal height of the slide block along the length direction of the guide rails to the minimum transverse width of the size of the slide block is greater than 1.5; and the gap between the outer diameter of the screw and the minimum inner diameter of the opening at the inserting end of the slide block is 0.3-0.5mm. The invention provides an economical multi-station friction screw press which can be used for multi-station forging.

The invention relates to a rod type core bar bending restrain steel support which solves the problems of large difference of rigidity and stability of all directions of an energy dissipation section of the traditional bending restrain support, difficult support installation and complex restrain construction. A core main stress part comprises an energy dissipation section, conversion sections and an installation section, wherein the energy dissipation section is a solid steel bar or hollow steel pipe; an outer restrain steel part comprises a local restrain steel member and an integral restrainsteel member, the local restrain steel member comprises a core bar steel sleeve, the integral restrain steel member comprises a delay steel frame fixed outside the core bar steel sleeve and an auxiliary steel cylinder; one section of the two conversion section is in friction contact with the steel cylinder of the conversion section and a gap is remained between the core bar steel sleeve and the delay steel frame. The section of the energy dissipation section of the support has uniform size in all directions, which eliminates the difference of the rigidity and the stability of different directions, thus the local stable bearing capacity and the integral bending-preventing capacity are high, and the working reliability under large axial direction strain and strong shock is high; and the rodtype core bar bending restrain steel support is convenient for installation, and is suitable for engineering earthquake fortification and reinforcement.

The invention provides variable-tread axles of trailer, in the state of freely advancing and retreating of inside axle relative to outside axle and in the variable-tread axles, realizing stopping the rotation of inside axle and needing no spline to position vehicle at the same time, in addition, realizing enlarging the widening amount of the tread. It has: the outside axle supported on the bodywork by plate springs, the inside axle supporting the wheel, the hydraulic cylinder device driving the inside axle in the axial direction and the locking device fixing the inside axle..

A vehicle seat is configured in such a manner that, when a collision from the front relative to the occupant occurs, the seat surface of the seating section moves. The vehicle seat is provided with: a base frame which is supported on the seating section at a position thereof which is on the vehicle body side; a movable frame (40) which is movable relative to the base frame; at least one driving force generating member (second gas cylinder (61)) which is activated in a frontal collision; and one or more power transmitting members for transmitting the driving force of the driving force generating member. At least one of said one or more driving force generating members is disposed so as to face the movable frame (40), and the movable frame (40) has a recess (42A) provided at the portion thereof which faces the driving force generating member.

The invention provides a rotation positioning device. The rotation positioning device comprises a rotation shaft, a rotation bearing and positioning frame and an adjustable positioning ball assembly, wherein a V-shaped groove is formed in the surface of the rotation shaft, three positioning ball assembly installation planes are arranged on the surface of the rotation bearing and positioning frame and symmetrically arranged in the rotation direction of the rotation shaft, the adjustable positioning ball assembly comprises three eccentric positioning balls and three adjustment bolts, the three adjustment bolts are arranged on the three positioning ball assembly installation planes respectively, the eccentric poisoning balls are of a semi-spherical structure and connected to the three adjustment bolts respectively, one of the eccentric positioning balls makes point contact with the two planes of the V-shaped groove, and the other two eccentric positioning balls make point contact with the cylindrical surface of the rotation shaft. The rotation movement is restrained and delivered when the adjustable eccentric positioning balls make four-point contact with the rotation shaft, the rotation positioning device has relative movement freedom degrees in three directions, the requirement for rapid and repeated assembly and positioning can be met, the rotation positioning device adapts to the deviation caused by changes of the environment, and no additional disturbance torque is generated.

The invention relates to a corrugated pipe?expansion joint internal pressure bursting test device. According to the invention, the corrugated pipe?expansion joint is fixed in a steel frame structure; a water pressure required by testing is charged; and a bursting test is carried out. Therefore, working status of the corrugated pipe?expansion joint at internal pressure blasting can be truly reflected, and reliable axial restraining can be provided for a tested part during internal pressure bursting. The corrugated pipe?expansion joint internal pressure bursting test device provided by the invention comprises main bearing parts which are an upper bearing beam (201) and a lower bearing beam (2013), a column (204), a blocking cover (206), sealing rings (2023, 2020), a blocking cover with a filling port (208), an elevation pressure plate (203), a pressure board (209), a fixing plate (2012), a pressurizing hose (2017), a hydraulic bursting test stand (2019), a pressure plate mount (2018), and a fixing element. The device provided by the invention has the advantages of fast fixing, high versatility, high bearing capacity, convenient moving, and the like.

A portable laser emitter, laser targets, and method for aligning commercial truck and trailer axles are disclosed. The laser emitter is mounted to the wheel of a truck drive axle while the laser targets are mounted to the truck's steer wheels. Measurements are taken of the laser dot position on the laser targets for both ends of the axle. The measurements taken from either end of the axle are compared to determine the angle of the drive axle. This method may also be applied to a commercial trailer by using a floor standing laser target centered on the trailer king pin.

The invention provides a mobile phone with a battery waterproof function, which can solve the problems in the prior art such as poor sealing effect, need for disassembly and assembly, small sealing area, poor reliability, and troublesome disassembly and assembly methods. The technical scheme of the present invention is that an annular groove is arranged around the periphery of the battery on the inner bottom surface of the battery, the sealing ring is installed in the annular groove, the upper part of the battery is inserted into the battery positioning groove provided by the casing through the boss at the upper end of the battery casing; The bayonet on the upper part of the buckle is inserted into the battery groove, so that the battery and the battery casing are locked in the battery compartment. The battery adopts a movable and detachable installation structure. The battery buckle structure can not only ensure the tight positioning, but also form an effective pressure on the sealing ring, and it does not need tools to disassemble and assemble, which brings convenience to users.

The invention discloses a novel ground vehicle device for carrying ammunitions for fighters, particularly relates to an aviation ammunition carrier loader with a large carrying capacity, and is developed to overcome the defects that an active-duty ground ammunition carrier is heavy, slow in ammunition hanging speed and large in personnel demand and the like. Designs such as front axle steering, a concave chassis, an aviation bomb placing rack, rolling wheels and a constraining mechanism are utilized in the aviation ammunition carrier loader with the large carrying capacity, the aviation ammunition carrier loader with the large carrying capacity can be used in a single mode and a plurality of aviation ammunition carrier loaders can be also towed for being used simultaneously, so that single-time ammunition carrying quantity can be greatly improved. The aviation ammunition carrier loader with the large carrying capacity allows conventional aviation ammunitions to be transported and stored without ammunition cages, after the ammunitions are transported to an airport, an ammunition hanging device can be used for directly hanging ammunitions on a fighter, the ammunition hanging time is greatly shorted, and the number of occupied operators is reduced.

The invention provides a reinforced material which is a meshy reinforced material formed in a way that stretched honeycomb hexagonal reinforced units are mutually welded. The reinforced material is mainly characterized in that the reinforced material with a certain thickness is in a reasonable grid shape, and the thickness is between geogrid and geocell. The reinforced material is annularly stretched to form a geotextile material which has higher strength and smaller deformability, compaction of packing and constraint of the reinforced material in the packing can be obviously improved by using the two characteristics, and the bearing capacity of fills is enhanced; additionally, the loss of the reinforced material in a compacting process can be reduced.

The invention discloses a camera internal parameter solving method and system based on an absolute quadric surface, and relates to the technical field of camera calibration, and the method comprises the steps: extracting a feature pixel point through employing an SIFT descriptor, and converting the feature pixel point into a corresponding feature vector; matching corresponding frames of the feature vectors by adopting a violence matching algorithm; calculating a basic matrix and poles between the matched frames through an eight-point algorithm to obtain a projection matrix P; on the basis of the projection matrix P and the constrained internal reference matrix K, solving an absolute quadric surface to apply a mandatory constraint to the absolute quadric surface, the absolute quadric surface being positive semi-definite, and solving an absolute quadric surface matrix parameter value; and performing optimization constraint on the absolute quadric surface matrix parameter value by utilizing the energy function E, and when the energy function E is minimum, obtaining an optimal solution of the internal reference of the camera. By adding reliable constraint, the solving difficulty is reduced, and the accuracy of a self-calibration result is improved.

The invention discloses a locking mechanism and a folding airfoil with the locking mechanism, belongs to the technical field of aircraft design, and aims to solve the problem that an existing lockingstructure occupies a spanwise layout space. The locking mechanism comprises a first part, a second part and a locking device, wherein the locking device comprises a telescopic locking pin, a locking hole, a release mechanism and a trigger mechanism; when the second part is located at the unfolding position, the release mechanism is triggered and drives the locking pin to extend out and enter the locking hole; the central axis of the locking pin and the central axis of the locking hole are parallel to the central axis of a pivot. Compared with the prior art, the occupied space is flexible in design, and the requirement for arranging the locking device in a small spanwise space can be met.

The invention provides a cell phone with waterproof performance for battery, which solves such problems existed in the prior art as poor sealing effect, tools aid being required for disassembly or assembly, limited sealing area, poor reliability, complicated ways of disassembly or assembly, etc. The technical proposal of the invention includes the following steps: a ring-shaped groove is arranged around a periphery on an inner bottom of the battery; a sealing ring is positioned inside the ring-shaped groove; through a lug boss on an upper end of the battery shall, an upper part of the battery is inserted in a battery position socket which is arranged on a shell, while the lower part of the battery is inserted inside a battery socket through a bayonet lock on an upper part of a hook; therefore, the battery and a battery shell are locked fixedly inside a battery box. The battery adopts a movable and detachable installation structure in which the battery hook structure is capable of guaranteeing fixed position and forming effective pressure on the sealing ring; besides, no tool is required for disassembly or assembly, thus offering users more convenience.

The invention discloses a photovoltaic module mounting rack well adaptable to environment temperature change. The mounting rack comprises a plurality of vertical rods and a plurality of cables, wherein the plurality of cables constitute a plurality of cable parts; each cable part comprises two transverse cables, and two transverse cables at each cable part are located at different heights; each cable part also comprises a plurality of middle connecting pieces which adopt length-adjustable rod-like structures; in each cable part, the transverse cables at the top ends are upper end cables. The mounting rack also comprises anchoring parts, and each anchoring part comprises an anchoring nail and a spiral spring; in the cable part between any two vertical rods, the transverse cable on the lowerside is connected with one anchoring part, and each anchoring part is connected with the corresponding transverse cable through the other end of a pull cable. The mounting rack has high structural stability, can effectively guarantee support stability for a solar photovoltaic device and has good shape holding capacity in seasonal change.

The invention discloses a steam and dry iron evaporation cavity impurity collecting structure, and belongs to the field of steam and dry irons. According to the steam and dry iron evaporation cavity impurity collecting structure, a collecting box component comprises two lock pieces, each lock piece is provided with a lock tongue, the lock tongues on the two lock pieces are arranged back to back, a rear lid of an electric iron is provided with lock holes of which each lock hole is corresponding to each lock tongue, the two lock pieces are subject to reverse elastic forces so as to make the lock tongues stretch into corresponding lock holes respectively and lock the collecting box component on the rear lid, and the two lock pieces are subject to extrusion in opposite directions so as to make the lock pieces overcome the elastic forces and drop out corresponding lock holes respectively; the structure is simple, the assembling is reliable, the operation is convenient and fast, the collecting box component can be reliably restrained in an assembly position, and steam leakage caused by accidental prolapse of the collecting box component is avoided.

The invention discloses a horizontal gradually pressurized DC electric field sludge drying device, which comprises a lower crawler, a distributor, an upper crawler, a frame, a guide rail, a transmission mechanism, a flat brush, an unloader, a flusher and a cleaner . The guide rails are divided into two layers. The guide rails fixedly connected on both sides of the upper layer of the frame are curved straight rails, and the guide rails fixedly connected on both sides of the lower layer of the frame are flat straight rails. The vertical distance between the upper and lower layers of guide rails gradually increases from right to left. Minus, the upper crawler is driven by the guide rails located on the upper layer, and the lower crawler is driven by the guide rails located on the lower layer, thus forming a step-by-step supercharging structure. In the present invention, wet sludge is directly clamped between the upper crawler and the lower crawler which are respectively connected to the positive and negative poles of the DC electric field. There is no filter belt in the pressing dehydration area, so there is no voltage drop problem, which greatly optimizes the pressing environment, improves dehydration efficiency, and saves waste. Energy, improve the safety performance of the equipment, the most important thing is to greatly increase the biscuitization degree of the mud produced, and reduce the energy consumption of the dehydration system.

The invention discloses a frictional wear experimental device capable of realizing time-varying positive pressure. The frictional wear experimental device comprises a supporting system, a friction pair test piece, an excitation system and a measurement system. The supporting system is used for installation and connection of each test device. The friction pair test piece comprises a static test piece and a dynamic test piece, the dynamic test piece is arranged on the sliding rail and can slightly move along the direction of the rail, and the static test piece is restrained and fixed on the supporting frame through a hinge device and a universal ball bearing. The excitation system comprises a vibration exciter for providing relative displacement for the dynamic test piece and a piezoelectric actuator for providing normal time-varying positive pressure for the static test piece. The measuring system comprises a laser displacement sensor, an acceleration sensor and three force sensors. The device has the advantages that the loaded state of the contact interface under the service condition can be reproduced, and the device can be used for analyzing the influence rule of the time-varying positive pressure on the mechanical property evolution of the friction pair interface.

The invention provides a multi-freedom-degree constraint auxiliary supporting device for reverse guided missile launching. The multi-freedom-degree constraint auxiliary supporting device comprises a guide rail, the guide rail is mounted in launching equipment in a fastened manner, a groove is formed in the guide rail, and an axial limiting block is arranged on the guide rail in a fastened manner.A push plate is located between the axial limiting block and the groove, the axial limiting block is in close contact with the push plate, and the push plate is in close contact with the groove. A parallelogram mechanism comprises a bottom plate, a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a first connecting rod, a second connecting rod and anarc baffle device. The bottom plate is mounted on the launching equipment in a fastened manner, and the first connecting rod and the second connecting rod are connected with the bottom plate through the first rotating shaft and the second rotating shaft. The first connecting rod and the second connecting rod are connected with the arc baffle device through the third rotating shaft and the fourth rotating shaft. The first connecting rod and the second connecting rod are in linkage through the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft. Multi-freedom-degree full constraining of the guided missile is achieved, and the product transporting safety is improved.

The invention relates to the field of laser processing, in particular to a laser shock peening method and a laser shock peening device using high-pressure gas as a constrained layer. The high-pressure gas serves as the constrained layer; the pressure of the high-pressure gas can be set and adjusted according to the test requirement; the pressure in the whole shocking process is controlled to be unchanged; and the position of a nozzle can be adjusted in real time, so that the jet center of the high-pressure gas, the spot center of laser and the pre-shock treatment position of a workpiece are overlapped, and single-point multi-time shock and multi-point continuous shock on a test sample are realized.

The invention provides a rotation positioning device. The rotation positioning device comprises a rotation shaft, a rotation bearing and positioning frame and an adjustable positioning ball assembly, wherein a V-shaped groove is formed in the surface of the rotation shaft, three positioning ball assembly installation planes are arranged on the surface of the rotation bearing and positioning frame and symmetrically arranged in the rotation direction of the rotation shaft, the adjustable positioning ball assembly comprises three eccentric positioning balls and three adjustment bolts, the three adjustment bolts are arranged on the three positioning ball assembly installation planes respectively, the eccentric poisoning balls are of a semi-spherical structure and connected to the three adjustment bolts respectively, one of the eccentric positioning balls makes point contact with the two planes of the V-shaped groove, and the other two eccentric positioning balls make point contact with the cylindrical surface of the rotation shaft. The rotation movement is restrained and delivered when the adjustable eccentric positioning balls make four-point contact with the rotation shaft, the rotation positioning device has relative movement freedom degrees in three directions, the requirement for rapid and repeated assembly and positioning can be met, the rotation positioning device adapts to the deviation caused by changes of the environment, and no additional disturbance torque is generated.

The invention provides a reinforced material which is a meshy reinforced material formed in a way that stretched honeycomb hexagonal reinforced units are mutually welded. The reinforced material is mainly characterized in that the reinforced material with a certain thickness is in a reasonable grid shape, and the thickness is between geogrid and geocell. The reinforced material is annularly stretched to form a geotextile material which has higher strength and smaller deformability, compaction of packing and constraint of the reinforced material in the packing can be obviously improved by using the two characteristics, and the bearing capacity of fills is enhanced; additionally, the loss of the reinforced material in a compacting process can be reduced.

A portable laser emitter, laser target, and method for measuring the toe angle of a commercial truck steer axle are disclosed. The laser emitter is mounted to the wheel of a truck steer axle while the laser target is placed in front of the truck. Measurements are taken of the laser dot position on the target with the emitter mounted at either end of the steer axle. The process is then repeated with the target positioned behind the truck. The measurements taken from either end of the steer axle with both front and rear target positions are compared to determine the toe angle of the steer axle.

A double-axis flexible binding structure for a micro-angle displacement platform comprises flexible axial binding hinges fixedly connected with the lower end of the micro-angle displacement platform. The other ends of the axial binding hinges are fixed at the bottom of a fixed casing, the structure further comprises a first flexible transverse binding hinge, a second flexible transverse binding hinge, a third flexible transverse binding hinge and a fourth flexible transverse binding hinge which have the same size and shape, one end of the first flexible transverse binding hinge, one end of the second flexible transverse binding hinge, one end of the third flexible transverse binding hinge and one end of the fourth flexible transverse binding hinge are respectively fixed at one ends of the micro-angle displacement platform, and the other ends of the four flexible transverse binding hinges are fixed on the inner walls of the fixed casing. Axial rigidity of the flexible transverse binding hinges is relatively large and is used for binding axial movement of the micro-angle displacement platform, and the four flexible transverse binding hinges have large transverse rigidity which is used for binding transverse movement of the micro-angle displacement platform. The double-axis flexible binding structure for the micro-angle displacement platform is reliable in binding, provides basis for high speed adjustment of a sub-micro radian rotating angle, and simultaneously has the advantages of being small in size and light in weight.

The invention relates to the technical field of foundation pit supporting engineering, and discloses a basement floor slab construction method based on stand column assembly type fixing, which specifically comprises the following steps: S1, constructing a supporting pile, a stand column and a supporting beam according to the requirements of a design drawing, and excavating a foundation pit to a pit bottom; and S2, a basement bottom plate, a basement outer wall and the bottommost floor are sequentially constructed, the hole space of the fabricated fixing device is reserved in the bottommost floor, concrete is poured into the floor outside the reserved hole, and after the fabricated fixing device is installed in the range of the reserved hole, the supporting beam on the bottommost floor is dismantled. Temporary constraint is arranged at the position of the floor, constraint of a supporting beam before support dismounting is replaced, after the supporting beam is dismounted, the stability and bearing capacity of the stand column can be effectively guaranteed, the construction gap between the stand column and the floor is effectively filled, reliable constraint is provided, meanwhile, rectangular or circular stand column grooves can be prefabricated, and the construction efficiency is improved. The cross section forms of rectangular stand columns, circular stand columns and the like can be used, and therefore the practicability of the assembly type fixing device is improved.

The invention relates to a multi-station friction screw press which comprises a body, a multi-station mold, a slide block, a screw, a plurality of guide rails and a screw driving device, wherein the multi-station mold is arranged on the workbench of the body; the slide block is arranged above the multi-station mold; one end of the screw is inserted into the slide block and is rotatablely connected with the slide block, and the screw drives the slide block to move up and down; the plurality of guide rails are arranged on the body and are used for guiding the slide block, and the distance among the guide rails is suitable for the slide block to slide among the guide rails; the screw driving device is connected with the other end of the screw and can drive the screw to rotate forward or backward and simultaneously rise or fall; the ratio of the longitudinal height of the slide block along the length direction of the guide rails to the minimum transverse width of the size of the slide block is greater than 1.5; and the gap between the outer diameter of the screw and the minimum inner diameter of the opening at the inserting end of the slide block is 0.3-0.5mm. The invention provides an economical multi-station friction screw press which can be used for multi-station forging.