39results about How to "Reduce deflection" patented technology

Provided is a door weather strip for a vehicle that suppresses a door frame of a door for a vehicle from being drawn out to the outside in the vehicle width direction by a pressure difference between the inside and outside of the vehicle when the vehicle is traveling at high speed. The door weather strip (10) has a mounting base (21) that is mounted to the door frame or a door trim, and a sealing lip (22) that abuts against a door opening portion peripheral edge (6) when the door (1) is closed. A protrusion (23) that abuts against the door opening portion peripheral edge (6) when the door (1) is closed is formed on the door opening portion peripheral edge (6) side of a front end portion (22a) of the sealing lip (22). A hard portion (70) that is harder than the material that constitutes the sealing lip (22) is formed so as to extend from a lower area of the protrusion (23) to the root portion (22b) side of the sealing lip (22).

This utility model relates to the field of machining center technology, specifically a quick-change tool chuck for CNC machining centers. It includes a spindle motor and a cutting tool. The spindle motor is mounted on the top of the spindle housing, and a Z-axis motor is fixedly connected to the back of the spindle housing. A motor is mounted on the top of the Z-axis motor, and a guide rail is mounted on the back of the Z-axis motor. The guide rail is mounted on the front of the column. This utility model significantly reduces tool runout and improves radial runout accuracy. The tapered hole design around the spindle port simplifies the mechanical structure and achieves synchronous positioning of the end face and the tapered surface, avoiding the gap problem of traditional tapers and reducing manufacturing costs. The built-in spring and pull stud assembly of the chuck can be disassembled separately, reducing maintenance costs. It overcomes the limitations of traditional chucks in terms of quick tool change, accuracy maintenance, and cost control, providing a better solution for efficient and precise machining in CNC machining centers.

This invention discloses a crankshaft axis inspection instrument based on machine vision, belonging to the field of crankshaft inspection technology. The machine vision-based crankshaft axis inspection instrument includes an inspection table and a primary lead screw slide mounted on the inspection table. A primary slide is slidably mounted on the primary lead screw slide, and a mounting frame is fixed on the primary slide. A vision camera for visually inspecting the crankshaft axis is mounted on the mounting frame. A support frame is vertically fixed on the mounting frame, and an illumination component coaxial with the vision camera is mounted on the support frame. Two sets of follow-up support wheels are provided below the crankshaft main journal to prevent deformation due to their own weight. A base component is provided on the support frame to adjust the position and angle of the follow-up support wheels. A base is mounted on the base component, and an adaptive support sensing component is provided on the base to sense the pressure of the follow-up support wheels supported below the crankshaft main journal. This inspection instrument can support and limit the crankshaft main journal, reduce axis inspection interference, and improve the accuracy of visual inspection.

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The utility model discloses a road road sealer, including the baulk, the towrope, the pivot and the drive arrangement, the pivot verticality is established, and the drive arrangement is connected with the pivot transmission, and the drive arrangement is used for driving the pivot rotation, the baulk is along the direction perpendicular to the pivot and is established, and one end of baulk is connected with the pivot, one end of the towrope is connected with the pivot, and the other end of the towrope is connected with the baulk, and the connecting point of pivot and the towrope is higher than the connecting point of pivot and the baulk, and the connecting point of the towrope and the baulk is close to one end of the baulk and away from the pivot. The technical effect reached is: through the pivot drive baulk horizontal horizontal rotation to carry out the road interception, and through the towrope auxiliary tow baulk, the overall structure is stable, can significantly reduce the flexure deformation of baulk because of dead weight and wind load, makes it still can keep stable operation under the condition of super long span, can greatly extend the applicable length of baulk, breaks through the span limit of traditional road sealing device, is especially suitable for wide road, large span tunnel etc. scene.

This utility model relates to the field of processing equipment technology and discloses an adjustable diamond chamfering wheel mounting structure. It includes a base and a drive assembly. The drive assembly is disposed on one side of the base and includes a protective box fixedly connected to one side of the base. A first drive motor is fixedly connected to the inner wall of the protective box. A first gear is fixedly connected to the output end of the first drive motor, and a second gear meshes with the outer side of the first gear. This utility model, by setting up a drive assembly and an adjustment assembly, avoids the problem of traditional mounting structures relying on bolts or simple slide rails to adjust the chamfering wheel position, which makes the adjustment process susceptible to external factors. It also solves the problem of uneven force during adjustment, leading to deviations in chamfering depth or angle, reducing the influence of external factors, minimizing swaying or jamming, and reducing errors.

This utility model discloses a modular steel structure frame that is easy to assemble, relating to the field of steel structure frame technology. It includes vertical columns, with horizontal columns on the outer sides of the vertical columns. A mounting sleeve is slidably connected to the outer side of the vertical columns. An mounting block is fixedly connected to the side of the mounting sleeve away from the horizontal columns. The mounting block has a pushing mechanism and a locking mechanism inside, which cooperate with each other. The pushing mechanism includes a fixing groove, which is located on the side of the mounting block near the vertical column. A sliding frame is symmetrically slidably connected inside the fixing groove. This utility model discloses a modular steel structure frame that is easy to assemble. Through the locking mechanism, the modular steel structure can be quickly assembled. The entire assembly process requires no welding or complex tools; installation or disassembly can be completed simply by pushing and pulling, significantly improving construction efficiency. It has a simple structure and strong practicality.

The application relates to an ultra-long small-diameter cylinder inner wall processing machine tool, and belongs to the technical field of machine tools, which comprises two three-coordinate moving platforms, the movement ends of the two three-coordinate moving platforms are connected with rotating main shafts; further comprises a rotary guide rail beam, the two rotating main shafts are connected with one end of the rotary guide rail beam and can control the rotation of the rotary guide rail beam; a moving table is slidably arranged on the rotary guide rail beam, a cutter main shaft assembly is arranged on the moving table, the cutter main shaft assembly can be connected with a milling cutter to drive the milling cutter to rotate, and the moving table is controlled to move along the length direction of the rotary guide rail beam through a driving assembly. The application can improve the precision and stability of ultra-long small-diameter cylinder inner wall processing.

The utility model provides an end tail support for supporting a broken roof and a narrow-space roadway, which comprises two groups of hydraulic supports arranged left and right, the two groups of hydraulic supports mutually push and move through a pushing jack, and each hydraulic support comprises a base, a top beam, a front upright post and a rear upright post, pushing jack bases are arranged at the positions, between the front stand columns and the rear stand columns, of the upper surface of the base, the pushing jack bases on the two sets of hydraulic supports are arranged in a front-back staggered mode, and lug plates facing the other set of hydraulic supports are arranged on the side faces of the pushing jack bases. The two ends of the pushing jack are installed on the two lug plates respectively. The left hydraulic support and the right hydraulic support are mutually pushed to move, safe support moving can be achieved on the premise that a roadway top plate is effectively supported, the jack is pushed to avoid occupying the space of the transverse width, and the hydraulic support is suitable for a trapezoidal section end tail area with the narrow space.

This invention relates to the field of food processing equipment technology, and discloses a food processing machine with stable operation, including a mixing cup and a main unit equipped with a motor and a reduction mechanism. The reduction mechanism includes a fixed gear ring, a double gear, a moving gear ring, and a planetary carrier that cooperate with each other. The double gear includes a gear with a shaft hole and a gear shaft passing through the shaft hole. The gear shaft and the motor shaft are arranged side by side, and the motor shaft drives the gear and gear shaft to rotate synchronously. The gear includes an upper gear that meshes with the fixed gear ring and a lower gear that meshes with the moving gear ring. The shaft hole wall is provided with a wear-resistant part, which surrounds the gear shaft to limit the radial movement of the gear shaft. The outer surface of the wear-resistant part is fixedly connected to the shaft hole wall, and a heat dissipation gap is provided between the inner surface of the wear-resistant part and the gear shaft. The axial height h2 of the wear-resistant part and the shaft hole wall height h1 satisfy 1 / 2h1<h2≤h1-2mm. This avoids direct contact between the gear shaft and the shaft hole, provides good wear resistance to the shaft hole, ensures good alignment between the gear and the rotating shaft, and ensures stable operation.

The utility model discloses a clamping device and draw-in machine, clamping device includes first resistance mechanism and second resistance mechanism, and first resistance mechanism and second resistance mechanism can move along the first direction to each other. First resistance mechanism includes a plurality of first resistance unit, and a plurality of first resistance unit interval arrangement along the first direction, and second resistance mechanism includes a plurality of second resistance unit, and a plurality of second resistance unit interval arrangement along the first direction, and one first resistance unit and one second resistance unit correspond, and one first resistance unit and one second resistance unit correspond respectively are used with the opposite sides of string pole along the first direction resistance, wherein, first resistance unit and second resistance unit along the first direction are opposite, and interval arrangement, or, first resistance unit defines first gap, and second resistance unit and first gap along the first direction are opposite, and interval arrangement. The utility model discloses a clamping device can reduce the deflection amplitude that makes string pole when clamping device clamps string pole, reduces the wear and tear to the row of comprehensive wheel.

The utility model discloses a vacuum bin body and a pressing machine, and relates to the technical field of pressing machines. The vacuum bin body comprises a frame and at least two rear vacuum door mechanisms arranged oppositely in the horizontal direction, the frame is provided with a bin opening, each rear vacuum door mechanism comprises a rotating arm assembly and a rear vacuum door assembly, and the rear vacuum door assemblies are rotationally installed on the frame through the rotating arm assemblies so that the rear vacuum door assemblies can be switched between the opening state and the closing state. When the rear vacuum door assemblies of all the rear vacuum door mechanisms are switched to the closed state, the bin opening can be sealed. In the vacuum bin body, the at least two rear vacuum door mechanisms are arranged, and the rear vacuum door assemblies of the rear vacuum door mechanisms can be matched with each other to seal the bin opening, so that the weight of a single rear vacuum door can be reduced, the deflection of a cantilever is reduced, and the probability that the rear vacuum door is unsmooth in rotation, easy to block, easy to droop and the like is reduced.

The present application belongs to the field of robot technology, and particularly relates to a small-diameter pipe detection robot with elastic clamping suspension, comprising three same climbing sub-mechanisms, adjacent climbing sub-mechanisms being connected with each other to form a three-side structure; each climbing sub-mechanism comprises a driving wheel type moving sub-mechanism, a driven wheel type moving sub-mechanism and a frame mechanism, the driving wheel type moving sub-mechanism and the driven wheel type moving sub-mechanism being arranged on two sides of the frame mechanism respectively; in the three-side structure formed by the three climbing sub-mechanisms, three groups of driving wheel type moving sub-mechanisms are arranged on one side of the frame mechanism, and three groups of driven wheel type moving sub-mechanisms are arranged on the other side of the frame mechanism. The robot has simple structure, is convenient to disassemble and assemble, has strong obstacle crossing ability, and can be applied to the outer surface inspection of pipes with different diameters.

The utility model relates to the technical field of photovoltaic flexible supports, in particular to a mountain flexible photovoltaic support system. The flexible supporting structure comprises a plurality of sets of flexible supporting systems arranged side by side, and the flexible supporting structure comprises end stand column assemblies arranged at the two ends, a plurality of sets of middle stand column assemblies arranged between the end stand column assemblies at the two ends and a steel cable system penetrating through the end stand column assemblies at the two ends and the middle stand column assemblies. The end stand column has the advantages that the end stand column is of a single-stand-column structure, the number of foundations of the end stand columns is reduced by half, meanwhile, construction is facilitated, and installation efficiency is improved.

This invention discloses a stacker crane for storing and retrieving extra-long materials, comprising a traveling device, a lifting device, a main frame, a loading platform, and a push-pull device. The traveling device drives the stacker crane to move horizontally within an aisle, and the traveling direction of the stacker crane is parallel to the width direction of the material. The lifting device drives the loading platform to rise and fall vertically, and the loading and unloading direction of the loading platform is parallel to the length direction of the material. The push-pull device includes a lower fork fixed to the loading platform, an upper fork slidably installed in a groove in the lower fork, a conveyor fixed to the upper fork, a chain drive device installed on the upper fork, and a circulating chain. The lower fork has a longitudinal groove on its surface, and the bottom of the upper fork is provided with a bearing structure that cooperates with the groove, realizing the forward and backward sliding of the upper fork along the length direction of the material. The circulating chain consists of two closed square chains, each chain having two rollers fixed on it. When the chain drive device drives the circulating chain to rotate, the rollers move in a closed loop with the chain.

The invention discloses a multi-zone carbon capture device which comprises an inlet flue section, a tower body and an outlet flue section, and the interior of the tower body is divided into a plurality of zones which operate independently through at least one partition plate; the inlet flue section is configured to selectively introduce flue gas into at least one subarea; the outlet flue section is configured to selectively exhaust flue gas from at least one of the partitions. Compared with a circular tower, the internal support length of the multi-partition tower type is shorter, and the multi-partition tower type has lower deflection during bearing. Compared with a square tower, the multi-partition tower type flue gas has better flow field distribution. Along with the change of the flue gas amount, the number of the working partitions can be dynamically adjusted, so that efficient utilization of resources is achieved.

The utility model discloses a high braking torque direct drive rotary table brake structure, which relates to the technical field of grinding machines and lathes, and comprises a machine tool body, a working table is arranged at the top of the machine tool body, a main shaft is arranged in the machine tool body, a connecting disc is arranged between the main shaft and the working table, and a rotor is sleeved outside the main shaft. A stator coil is arranged between the rotor and the machine tool body, a brake pad and a brake piston which are sequentially arranged from top to bottom in the axis direction of the main shaft are arranged between the main shaft and the stator, a piston cover is arranged below the piston, and a grating is arranged below the main shaft. According to the high-braking-torque direct-drive rotary table braking structure, the arch-shaped brake pad is arranged, the braking time is shortened, the braking loosening speed is increased, and then the braking and stopping accuracy is improved. The arch-shaped brake pad further has large braking force and can adapt to a higher rotating speed.

The application relates to the field of digital music instruments, and particularly to a display method of playing fingering and an intelligent music instrument. The method comprises the following steps: acquiring a plurality of groups of motion capture results, each group of motion capture results comprising hand posture data and key movement data, and the motion capture results being associated with corresponding third time stamps; generating a plurality of groups of hand playing images according to the plurality of groups of hand posture data; generating a plurality of groups of key pressing images according to the plurality of groups of key movement data; superimposing the plurality of groups of hand playing images and the plurality of groups of key pressing images based on the third time stamps to generate continuous playing animation, and the playing angle of the playing animation comprises a first angle and a second angle; playing the playing animation by using the first angle, monitoring missing data of a plurality of hand feature points in the playing animation of the first angle, and updating the playing angle to the second angle according to the missing data. While maintaining the clear presentation of key information, seamless and natural angle conversion is realized, and the visual experience is effectively improved.

A kind of micro folding unmanned aerial vehicle, there are landing gear springs between each landing gear and arm, and there are arm springs between arm joints and arms. The unmanned aerial vehicle has enough tension in the working state through the spring, which ensures the stability of the unmanned aerial vehicle structure and prevents damage due to excessive stretching. The optimized spring installation position makes the arm spring and landing gear spring in the folded state have small deflection, and the arm and landing gear will not deviate from the folded position due to small tension. During the unfolding process, the spring mounting column spacing increment is less than the maximum spring deflection, which will not be damaged due to excessive stretching. When the unmanned aerial vehicle is in flight, the spacing of the spring mounting column makes the torque of the tension generated by the spring on the arm shaft greater than the maximum counter-torque generated by the motor and rotor during flight, and the arm remains unfolded during work. The invention avoids the weight increase caused by complex structure; the arm and landing gear can be pulled by the spring tension in the unfolded and folded states to fix the position, so they will not shake with flight, ensuring flight stability.

An enhanced flanged live center includes a live center housing and a reinforcing member. The live center housing includes a front bearing cavity and a rear tapered shank for insertion into a tapered hole in a machine tool tailstock. The reinforcing member includes a flange ring and a reinforcing ring. The flange ring is fixed to the outer circumferential surface of the front bearing cavity. The reinforcing ring is C-shaped, and its two ends are connected by a second fastener, allowing the reinforcing ring to grip the outside of the machine tool tailstock. The flange ring and the reinforcing ring are connected by a first fastener, allowing the load borne by the front bearing cavity to be transferred to the machine tool tailstock through the reinforcing member. The enhanced flanged live center, with its reinforcing member for connecting to the machine tool tailstock, reduces the deflection of the live center and enhances its stability, thus improving the accuracy of the live center during rotation.

The application discloses a kind of sound barrier backboard pressure rib parameter optimization design method, it is related to engineering structure design and optimization technical field, and design method includes the following steps: establishing the finite element model of sound barrier, applies design wind pressure load, with predetermined initial pressure rib parameter as benchmark, deflection is solved;In the case where remaining parameters remain unchanged, respectively, change the depth, width, quantity and length of backboard pressure rib alone and carry out single-factor parameterization simulation, obtain the deflection variation corresponding to each parameter under different value;According to the size of deflection variation, determine the influence weight order of each parameter on the wind pressure resistance performance of screen body;With the parameter of maximum influence weight as priority maximization object, determine the maximum feasible value of this parameter within the range allowed by manufacturing process, and form optimal pressure rib parameter combination in combination with the maximum value of the remaining parameters.It is realized that the wind pressure resistance performance of screen body is maximized by systematic parameterization simulation and influence weight ordering.

The utility model provides a kind of packing line unpacking machine turnover mechanism, it is related to packing line unpacking machine technical field, it includes turnover frame, with the turnover frame bottom vertical fixed turnover platform, fixed in the multiple suction cups of the turnover platform upper surface, and with the turnover frame of driving mechanism connection, still include the support plate of cross, the bottom surface of support plate is connected with the telescopic rod of pneumatic cylinder, the cylinder body of pneumatic cylinder is fixed in the bottom of turnover platform.The utility model solves the technical problem that large size or special-shaped box is easy to fall off when turning over in prior art.

This invention relates to the field of prestressed concrete structures and discloses a composite core-column slab and its stiffness control method. The core-column slab includes a UHPC slab, longitudinal solid central ribs arranged along the span, and several core columns. High-strength unbonded prestressed CFRP (fiberglass reinforced polymer) reinforcements are arranged in pre-drilled channels within the central ribs. The CFRP reinforcements are arranged parabolically within the span and eccentrically relative to the bottom of the slab, so that prestress is generated at the bottom of the slab after tensioning. Guides are installed at the core column positions. The prestressed tendons bend as they pass through the guides, and the lateral force at the bend is transferred to the core column by the guides, thereby significantly improving the shear force transfer capacity and overall stiffness of the slab-column joint and within the slab span. Furthermore, this invention establishes a prestressing tension calculation formula based on the functional relationship between span-to-height ratio and stiffness, implementing stiffness compensation for different spans, and realizing a lightweight, high-stiffness, and durable integrated design for large-span modular building floor slabs.

This invention discloses a rebar cage production equipment and method, belonging to the field of engineering construction technology. The rebar cage production equipment includes a frame, a fixed turntable, a movable turntable, a stirrup supply mechanism, a straightening and feeding moving mechanism, a welding mechanism, and multiple sets of cage-supporting mechanisms. The fixed turntable is located at one end of the frame, and the movable turntable is movably mounted on the frame. The fixed and movable turntables can rotate synchronously and are each provided with mold holes. The stirrup supply mechanism is used to supply stirrups. The straightening and feeding moving mechanism is located downstream of the stirrup supply mechanism and can straighten and transport the stirrups to the main reinforcement bars. It can also move relative to the frame to adjust the feeding position of the stirrups. The welding mechanism is used to weld the stirrups to the main reinforcement bars. The cage-supporting mechanisms can support the rebar cage from below. The rebar cage production method using the above-described equipment can precisely control the reserved dimensions of the stirrups at the ends of the rebar cage and effectively suppress rebar cage deformation when producing longer rebar cages.

The application relates to a tilting gravity pouring machine system which comprises a tilting device, a feeding assembly and a pouring assembly, the feeding assembly comprises an aluminum pool, molten metal liquid is stored in the aluminum pool, the pouring assembly comprises a machine table arranged between the aluminum pool and the tilting device, a rotating disc is rotationally connected to the machine table, a mechanical arm mounting seat is fixedly arranged on the rotating disc, a first mechanical arm is rotationally connected to the mechanical arm mounting seat, a second mechanical arm is rotationally connected to the free end of the first mechanical arm, a third mechanical arm is rotationally connected to the end of the second mechanical arm away from the first mechanical arm, a turnover motor is arranged at the free end of the third mechanical arm, a pouring cup rack is arranged on the output shaft of the turnover motor, and a pouring cup is arranged on the pouring cup rack. The application has the effects of improving pouring operation efficiency and safety.

The utility model provides a kind of superhigh cable and U-shaped glass combination support structure, including first crossbeam, second crossbeam, first column, second column flush with front, further include several U-shaped glasses, the upper and lower ends of U-shaped glass are fixed respectively in the outside of first crossbeam and second crossbeam by first embedded part, first column and second column are located respectively at the two sides of several U-shaped glasses, several anchorage points are arranged in the height direction of first column, second column, first steel cable connecting piece is embedded at the anchorage point of first column and second column, several through holes are equipped at the corresponding height of the flange of U-shaped glass and anchorage point, steel cable sleeve is fixed in through hole, the connecting hole of first steel cable connecting piece of the same height is aligned with the connecting hole of steel cable sleeve, several U-shaped glasses are connected by transverse cable, transverse cable can pass the connecting hole of first steel cable connecting piece, the connecting hole of steel cable sleeve and the both ends of transverse cable are anchored to first steel cable connecting piece, good appearance, applicable to the floor span of larger floor height, reduce the setting of crossbeam, compared with traditional method total span can increase n+1 times, floor height can increase n+1 times, n is the number of transverse cable.

The utility model provides a kind of magnetic suspension rotating machinery, it includes: rotor, first axial bearing, second axial bearing, thrust disc and first sensor, rotor has first shaft section and second shaft section, the outer diameter of first shaft section is less than second shaft section to form first step surface at the joint of two, the iron core of second axial bearing is also formed protruding portion in the direction away from thrust disc by stretching out in the direction away from thrust disc in axial side away from thrust disc, protruding portion is located in the radial outer side of first shaft section, first sensor is set between the outer circumference of first shaft section and the radial inner circumference of protruding portion, and the axial side of first sensor is towards first step surface, to obtain the axial displacement of rotor by detecting the axial displacement of first step surface. According to the utility model, the detection accuracy of magnetic suspension rotor axial displacement can be greatly improved;Effectively solve the problem of low axial displacement detection accuracy of rotor in the magnetic suspension compressor in the prior art, leading to low axial reliability.

This utility model discloses an installation system for a fair-faced concrete sloping ceiling, belonging to the field of building ceiling construction technology. It includes a ceiling structure, supporting beams, suspension columns, ceiling joists, and connecting parts. The ceiling structure is a concrete structure. Supporting beams are spaced above the ceiling structure. Suspension columns are spaced at the bottom of the supporting beams. The ceiling joists are arranged in a grid pattern and connected to the supporting beams through the suspension columns, with their bottom surfaces fitting flush with the top surface of the ceiling structure. Connecting parts are spaced at the bottom surface of the ceiling joists and include connecting plates, anchor bars, and embedded plates. The connecting plates are connected to the ceiling joists. Anchor bars are spaced at the bottom of the connecting plates. Embedded plates are located at the bottom of the anchor bars. This utility model uses supporting beams and ceiling joists in combination to provide an installation system that fits flush with the ceiling structure. The supporting beams are selected as a single-piece truss structure, and the ceiling joists are arranged in a grid pattern, which structurally improves the strength of the installation system and meets the installation requirements of fair-faced concrete ceilings.