66results about How to "Guaranteed assembly stability" patented technology

The utility model relates to the technical field of computer cases, in particular to a computer case convenient to disassemble and assemble. The computer case convenient to disassemble and assemble comprises a case body, a front panel and a rear panel, the front panel and the rear panel are located on the left side and the right side of the case body respectively, installation grooves are evenly formed in the left side of the case body in a penetrating mode, and locking holes are evenly formed in the installation grooves. Butt joint columns are uniformly arranged on the right side of the front panel and the left side of the rear panel respectively; the panel and the rear panel are preliminarily fixed on the case through mutual adsorption of the magnetic blocks and the iron blocks, and meanwhile, the front panel and the rear panel can be further fixed on the case through mutual cooperation of the springs and the round head bolts, so that the assembling stability of the front panel and the rear panel with the case is fully guaranteed; the front panel and the rear panel are fixed on the case through a magnetic attraction and elastic clamping method, and when the front panel and the rear panel need to be disassembled and assembled, the front panel and the rear panel only need to be directly pulled and inserted, so that the disassembly and assembly convenience of the case is improved.

The present invention discloses an ultrasonic gas meter module and an ultrasonic flowmeter using the gas meter module. The ultrasonic gas meter module includes: a flow channel upper shell, an air inlet guide structure, an air outlet guide structure, a transducer fixing frame, a transducer fixing cover plate, and a flow channel lower shell connected to the shell substrate of the flow channel upper shell. The air outlet end of the flow channel body and the air outlet guide structure, the transducer fixing frame and the connected transducer fixing cover plate are located in the inner cavity of the flow channel shell. The top wall of the flow channel shell is provided with an air outlet pipe connected to the inner cavity of the flow channel shell. The ultrasonic flowmeter includes: a gas meter shell, an air inlet valve arranged at the air inlet of the gas meter shell, and the aforementioned ultrasonic gas meter module horizontally installed in the gas meter shell; the flow channel shell divides the chamber in the gas meter shell into an air inlet cavity outside the flow channel shell and an air outlet cavity inside the flow channel shell. The ultrasonic gas meter module has a simple structure, convenient loading and unloading of each structure, stable assembly, and can be applied to ultrasonic gas meters of various specifications.

The utility model discloses an eraser assembly capable of preventing breakage. The eraser assembly comprises an eraser body, an inner shell, an outer shell and a rotary cover. The eraser body is in a column shape, and the eraser body is arranged in the inner shell in a sleeved mode. Rotating shafts are formed on the two sides of the top of the inner shell respectively, and the two sides of the rotating cover are rotationally connected to the two rotating shafts respectively; the side surface of the rotary cover is fan-shaped; the inner shell is movably arranged in the outer shell in a sleeved mode. The eraser assembly has the advantage that the eraser is prevented from being torn or broken easily.

The utility model discloses an anti-drowning system, and relates to the technical field of anti-drowning. Comprising an alarm receiving assembly, a signal transmitting assembly and a light source assembly. The signal transmitting assembly comprises a swimming cap, a waterproof cover body arranged on the swimming cap and a signal transmitting module arranged on the waterproof cover body; the signal transmitting module comprises a water level sensor, a first control chip and a first power supply, and a timer and a GPS / Beidou position information transmitting module are integrated on the first control chip; the alarm receiving assembly comprises a second control chip, a first alarm and a second power supply, and the first control chip is in signal connection with the second control chip; by adopting the technical scheme provided by the invention, the position of a drowning risk person can be quickly obtained, so that the rescue time is effectively shortened, and the probability of accidents is reduced.

The embodiment of the utility model discloses a battery cell and a battery cell group, and relates to the technical field of new energy, the battery cell comprises a first pole core and a second pole core, the first pole core comprises a first pole core body and a plurality of first tabs connected with the first pole core body; the second pole core comprises a second pole core body and a plurality of second tabs connected with the second pole core body; wherein the plurality of first tabs comprise a first staggered layer area, the plurality of second tabs comprise a second staggered layer area, and the first staggered layer area and the second staggered layer area are complementarily matched. According to the technical scheme provided by the embodiment of the invention, the assembly stability and reliability of the battery cell are improved.

The application provides a sample adding device, which comprises a container adapted to contain reagents and comprising a container mouth; a sample adding mechanism arranged at least partially in the container and in communication with the interior and exterior of the container to deliver the reagents in the container to the exterior of the container; an interface mechanism adapted to connect the container mouth and the sample adding mechanism; the interface mechanism comprises an interface penetrating along the axial direction of the container mouth, and a support and a bearing member successively sleeved in the interface; the interface is detachably sleeved on the outer periphery of the container mouth, and there is a gap between the interface and the support to adapt to receiving the side wall of the container mouth; the bearing member is sleeved on the outside of the sample adding mechanism; first and second sealing rings are arranged between the support and the bearing member and between the support and the side wall of the container mouth respectively to seal the connection of the interface mechanism with the sample adding mechanism and the container mouth respectively. By using the application, simple assembly between the container and the sample adding mechanism can be realized, and sealing between the container and the sample adding mechanism can be realized.

The utility model relates to the technical field of building construction, in particular to a steel frame limiting and righting device and a steel frame positioning assembly. The steel frame limiting and righting device comprises a connecting part, a positioning part and a limiting part. The positioning part is arranged on the connecting part, the positioning part is provided with two clamping pieces which are parallel to each other, and a clamping space used for clamping I-shaped steel to be clamped is formed between the two clamping pieces and the connecting part; the limiting part is arranged on the connecting part, the limiting part is parallel to the clamping piece, and a limiting space for the I-shaped steel to be limited is formed among the limiting part, the positioning part and the connecting part. According to the steel frame limiting and righting device and the steel frame positioning assembly provided by the utility model, the I-shaped steel is positioned through the positioning part, and the other I-shaped steel is limited through the limiting part, so that the maximum distance between the two I-shaped steel is limited, and the assembly stability of the steel frame is ensured; the clamping piece and the limiting part are arranged in parallel, so that the angle consistency of the I-shaped steel is ensured, and the assembly efficiency is improved.

A drying and cleaning cover comprises a cover body and further comprises a first connecting pipe, a second connecting pipe and an air inlet pipe, the first connecting pipe is integrally formed in the middle of the upper end of the cover body, the second connecting pipe is connected with the first connecting pipe, and an extending pipe perpendicular to the extending direction of the second connecting pipe is arranged on the peripheral face of the second connecting pipe. An exhaust pipe is arranged on the extension pipe, and the air inlet pipe penetrates through the first connecting pipe and the second connecting pipe at the same time and is connected with the second connecting pipe; connecting assemblies for preventing separation after connection are arranged between the first connecting pipe and the second connecting pipe, between the second connecting pipe and the air inlet pipe and between the extension pipe and the air exhaust pipe, and the connecting assemblies are connected in an inserted mode to achieve locking connection.

The utility model belongs to the technical field of batteries, and particularly relates to a composite isolating membrane structure, a battery cell and a battery, the composite isolating membrane structure comprises a base membrane and at least two coating composite layers; the coating composite layer is arranged on the surface of at least one side of the base film; the coating composite layer comprises a coating sub-layer and a convex sub-layer which are arranged in a laminated manner; the protrusions are connected to the base film in a layered mode. A blank concave area is arranged between every two adjacent protruding layers. According to the composite isolating membrane structure, the liquid retention capacity of a battery cell corresponding to the composite isolating membrane structure can be improved, the cycle life of the battery cell is favorably prolonged, and the use stability and safety are improved.

The invention discloses an assembled electric energy metering box, and relates to the technical field of electric energy metering, the assembled electric energy metering box comprises an assembled metering box and a wall hanging plate, the wall hanging plate is provided with a movable groove, the inner side of the movable groove is provided with a turnover mechanism, the inner side of the movable groove is provided with a supporting mechanism, the front side of the assembled metering box is provided with a metering box cover, and the front side of the assembled metering box is provided with a lifting mechanism. The assembled metering box comprises a left box body, a right box body and a plurality of assembled box bodies, mounting plates are arranged in inner cavities of the left box body, the right box body and the assembled box bodies, and an inserting mechanism is arranged on the assembled metering box. According to the assembled electric energy metering box, the plurality of assembled box bodies are assembled between the left box body and the right box body through the cooperation of the assembling grooves and the assembling seats, and the left box body, the right box body and the left box cover, the right box cover and the assembled box cover at the front parts of the assembled box bodies are assembled through the cooperation of the sealing slots and the sealing insertion blocks; and the function of adjusting the size of the metering box is realized, so that different requirements can be met.

The utility model relates to medium plate technical field discloses a kind of plastic medium plates for phase shifter special, including long plate component, middle plate component, small axle component, connecting seat, second clamping slot and short plate component, long plate component is basic component, its one end is equipped with connecting protrusion and first clamping slot, and long plate component still is provided with clamping slot, middle plate component is connected with long plate component, long plate component is distributed with through slot, slot and third clamping slot, small axle component is installed in the corresponding position of long plate component, connecting seat is simultaneously installed on long plate component and middle plate component, the middle position of long plate component is provided with long groove, short plate component is connected with middle plate component, second clamping slot is respectively set on long plate component and middle plate component.The utility model is cooperated by the long plate component, middle plate component and short plate component of being set, and it is positioned and assembled quickly and accurately by connecting protrusion, clamping slot and slot structure, and additional fastener can be reduced.

The invention relates to the field of vehicle part manufacturing, in particular to a pretensioner housing, a safety belt pretensioner assembly and a vehicle, the pretensioner housing comprises an end cover and a protective sleeve, the end cover is used for being arranged on an end piece assembly of a pretensioner, and the protective sleeve is used for being arranged outside a tensioning piece of the pretensioner in a sleeving mode; a first connecting mechanism is arranged on the end cover, a second connecting mechanism matched with the first connecting mechanism is arranged at the position, facing the end cover, of the protective sleeve, and the end cover and the protective sleeve are detachably connected through the first connecting mechanism and the second connecting mechanism so that the end cover and the protective sleeve can be relatively fixed. Therefore, the protective sleeve cannot be loosened relative to the tensioning piece, the protection effect of the protective sleeve on the tensioning piece is guaranteed, the assembling stability of the protective sleeve relative to the end cover is guaranteed through the first connecting mechanism and the second connecting mechanism, and the use experience of a user is improved.

The present invention discloses a trench gate RC-IGBT device structure, and the present invention relates to the technical field of semiconductor devices. The trench gate RC-IGBT device structure adopts a trench gate plus a field stop layer structure inside the IGBT substrate, thereby increasing the surface channel density, improving the near-surface carrier concentration, reducing the chip area, and ensuring the operating power of the chip at the same time. The IGBT substrate, power chip, and driver chip are integrated and packaged through a frame-E-space DBC composite structure, ensuring the use effect while effectively preventing electromagnetic interference and false triggering, and further ensuring the operating stability of the chip.

The utility model discloses a comb with a detachable comb head. The comb comprises the comb head, a comb handle and a spinning buckle structure arranged between the tail of the comb head and the head of the comb handle. The tail of the comb head is inserted into the head of the comb handle. The rotary buckle structure comprises a first guide groove extending in the opposite insertion direction, a second guide groove communicated with the first guide groove, a blocking protrusion arranged in the second guide groove in a protruding mode and a protruding head capable of sliding along the first guide groove and the second guide groove. The second guide groove extends around a rotation center line in an arc shape, and the rotation center line extends in the plug-in direction. The raised head can slide to an alignment position aligned with the second guide groove along the first guide groove in the process of oppositely inserting the comb head and the comb handle, the raised head at the alignment position can be screwed into a locking position, crossing the blocking bulge, of the second guide groove around the rotation center line, and the blocking bulge can prevent the raised head from being screwed out of the second guide groove around the rotation center line. According to the comb with the detachable comb head, on one hand, assembling and disassembling operation between the comb head and the comb handle is facilitated, and on the other hand, assembling stability between the comb head and the comb handle is guaranteed.

The utility model discloses an automobile pedal which comprises a pedal body and an end cover installed at the end of the pedal body. A first clamping piece is arranged on the end cover, a second clamping piece is arranged on the pedal main body, and the first clamping piece corresponds to the second clamping piece; the end cover is installed on the end portion of the pedal body in a clamped mode through the first clamping piece and the second clamping piece, so that the end cover and the pedal body are assembled in a clamped mode, and the assembling stability and attractiveness of the whole pedal are guaranteed. A fixing screw can be additionally arranged in the automobile pedal to reinforce the assembly of the end cover and the pedal main body, and the fixing screw is assembled from the rear side of the pedal main body, so that the attractiveness of the whole automobile pedal is ensured, and the assembly stability of the end cover and the pedal main body is further enhanced.

The present invention provides a cover assembly and a dehumidifier. The cover assembly includes: a cover; a handle structure, the handle structure is detachably connected to the cover body, the handle structure has a first limiter, the cover body has a second limiter, the second limiter is movably connected to the first limiter, so that the handle structure moves within a preset angle range; a locking pin structure, the locking pin structure is detachably connected or movably connected to the cover body, and the locking pin structure has a stopper, after the handle structure and the cover body are installed in place, the stopper cooperates with the first limiter in the installation direction of the handle structure. The present invention solves the problem of low assembly efficiency of the handle structure in the prior art.

The utility model discloses a jacking and tightening tool for screwing bolts on a vehicle frame, which comprises a mounting block mounted with a wire body and a PID (proportion integration differentiation) chip arranged on a tool plate, and a jacking plate is arranged above the mounting block; pulleys are mounted at the bottom end of the jacking plate; a track groove is formed in the center of the mounting block; an air cylinder I is mounted in the middle of one side of the mounting block; the output ends of the four second air cylinders drive the pressing pieces to press up and down, meanwhile, the pressing pieces are jacked and locked through eccentric cams, and therefore vehicle frame workpieces are positioned, the output ends of the first air cylinders advance along rail grooves through sliding blocks, drive pulleys to rotate and ascend along the inclined faces of the sliding blocks, when the tool plate is jacked, four shaft pins are inserted into shaft sleeves on the tool plate, and the tool plate is jacked. Therefore, the tool plate is jacked and positioned at the same time, the assembly precision and stability of the tool can be guaranteed, the production takt can be greatly accelerated, and the productivity is improved; the device is simple in structure, convenient to operate and worthy of popularization.

The utility model relates to a seamless convenient skirting line installation structure which comprises a hard installation wall face, a hard installation ground, a wallboard and a skirting line, the skirting line comprises a skirting line support and a skirting line body, the skirting line support is fixed to the hard installation wall face, and the lower end of the skirting line support abuts against the hard installation ground; the inner side of the lower portion of the wallboard is clamped and fixed to the upper portion of the leg wire support, a leg wire assembling area is defined by the lower end of the outer side of the wallboard, the hard-mounted ground and the outer end of the leg wire support, the leg wire body extends into the leg wire assembling area and is detachably assembled to the outer end of the leg wire support, and the upper end of the leg wire body supports the bottom of the wallboard. And the lower end is supported on the hard ground. According to the scheme, the leg wire support and the wall plate are clamped and fixed firstly, a gap between the wall plate and the leg wire support is eliminated, and the fixing problem of wall plate base layer stress installation is also solved. Further, the skirting line body extends into the skirting line assembly area and is detachably assembled on the skirting line support to complete installation of the skirting line, and the skirting line is very convenient to disassemble, assemble and adjust.

The utility model discloses a current sensor assembling structure comprising a mounting rack, and the upper end surface of the mounting rack is provided with a movable groove. The assembly plate is arranged in the movable groove, sliding grooves are formed in the two sides of the interior of the assembly plate, fixing rods are installed in the sliding grooves, the two ends of the fixing rods are fixed to the assembly plate, sliding blocks are installed outside the fixing rods, and the sliding blocks and the fixing rods are in sliding limiting; a supporting spring is installed on one side of the sliding block and wraps the fixing rod, and the two ends of the supporting spring are fixed to the assembling plate and the sliding block correspondingly. And the limiting stud is arranged on the upper end face of the sliding block, a fixing nut is installed outside the limiting stud, and the fixing nut is matched with the limiting stud through threads, so that the problems that the current sensors of different specifications are inconvenient to install and the anti-seismic performance is poor in the assembling mechanism are solved.

The utility model discloses a corner window glass assembly assembling and placing mechanism which comprises a base, an inclined block is fixedly connected to the top of the base, a deflection groove is formed in the top of the base, the position of the deflection groove is located below the edge end of the inclined block, and a rotating shaft is rotationally connected to the interior of the deflection groove. And the surface of the rotating shaft is fixedly connected with a deflection plate. Through the cooperation of the base, the inclined block, the deflection groove, the rotating shaft, the deflection plate, the electric telescopic rod, the hinging piece, the sliding block and the sliding frame, the electric telescopic rod stretches out and draws back, the hinging piece drives the sliding block to slide in the sliding frame, the deflection plate can rotate in the deflection groove around the rotating shaft, and the angle can be adjusted according to the assembly requirements of different angle window glass assemblies; and then through cooperation of the adsorption holes, the flow divider and the vacuum pump, the angle window glass assembly can be firmly adsorbed, glass is prevented from moving or falling off in the assembling process, and the assembling stability and accuracy are guaranteed.

This utility model discloses a battery top cover, a battery cell, and an electrical device, belonging to the field of battery technology. The battery top cover includes a cover plate and terminals. The cover plate has a first through hole extending along a second direction and penetrating the cover plate. The terminals include a first connecting portion, at least two second connecting portions, and a fixing member. The first and second connecting portions are arranged along a first direction. The first connecting portion is located on one side of the cover plate along the second direction, and at least a portion of the second connecting portions passes through the first through hole. At least a portion of the fixing member is located on the other side of the cover plate along the second direction and is connected to the second connecting portions. A first welding area on the fixing member for connecting with a tab and a second welding area on the second connecting portion for connecting with the fixing member both extend along the first direction. The battery cell includes the aforementioned battery top cover. The electrical device includes the aforementioned battery cell. The fixing member connects the second connecting portions to the tabs, ensuring that the first through hole is away from the edge of the cover plate, thus guaranteeing the structural strength of the cover plate.

The utility model discloses an automatic capping machine belongs to the field of automation equipment, the automatic capping machine of the utility model, including cover body feeding mechanism, main part conveying mechanism and cover body down -pressing mechanism, and the main part conveying mechanism is from the below of cover body down -pressing mechanism, and the just below of cover body down -pressing mechanism is equipped with main part top mechanism, and cover body feeding mechanism is located one side of main part conveying mechanism, main part top mechanism includes lift plate, and the top block and top drive, and top drive is equipped in the below of lift plate, is used for driving two top blocks to move up and down between first position and second position. The main part component on the main part conveying mechanism is lifted up by main part top mechanism, realizes to the main part component of being assembled to feed and position, and realizes automatic capping with cover body feeding mechanism and cover body down -pressing mechanism, and can utilize main part conveying mechanism unloading after the assembly is completed through the decline of main part top mechanism, has simplified the structure and assembly action of automatic capping machine, has improved assembly efficiency.

The utility model relates to smelting equipment technical field, the utility model provides a kind of visual oxygen lance for blast furnace blow-in, it includes: oxygen lance shell, the middle part of oxygen lance shell is equipped with flow channel, the bottom end of oxygen lance shell is fixedly connected with the oxygen transmission pipe and compressed air transmission pipe communicated with flow channel;Feedback board, the middle part of feedback board is embedded with feedback lens, the edge of the side of feedback board close to oxygen lance shell is fixedly connected with multiple lock rods, the end of oxygen lance shell close to feedback board is equipped with quick-mounting assembly, quick-mounting assembly is used for cooperating lock rod positioning feedback board;Protective assembly, protective assembly is assembled in the side of feedback board away from lock rod. Through the above technical scheme, the technical problem that the peephole mirror is lacking in effective protective measures in the unused state in the prior art, when contacting with the peephole mirror outside, the peephole mirror is easily scratched, and is easily attached by dust, affects the clarity of peephole mirror is solved.

The utility model relates to the technical field of electrical cabinets, in particular to a power distribution cabinet drawer which comprises a drawer shell and a base, the drawer shell is slidably connected to the base, pulleys are rotatably and symmetrically connected to the interiors of the two side walls of the drawer shell in the sliding direction of the drawer, and the bottoms of the pulleys are in sliding fit with the base. Shell limiting plates extending upwards are arranged on the two sides of the base, a plug board is arranged at the rear end of the base, the stability and reliability of sliding fit between the drawer shell and the base can be guaranteed by arranging the pulleys, and the shell limiting plates extending upwards are arranged on the two sides of the base and can play a role in limiting displacement of the drawer shell towards the two sides; and the pulley notches are formed in the chassis and below the pulleys, so that the bottoms of the pulleys are in sliding fit with the base, the use stability and reliability of the pulleys can be ensured, and the movement of the drawer shell is more stable and reliable.

The utility model discloses an oxygen production separating valve in the technical field of separating valves, which comprises a first valve casing and a second valve casing, a sealing block is fixedly arranged on the lower side of the second valve casing, an inner groove is arranged on the inner side of the second valve casing, two groups of sliding blocks are movably arranged on the inner side of the inner groove, and connecting blocks are fixedly arranged on the lower sides of the two groups of sliding blocks. A positioning block is fixedly arranged on the portion, located on the lower side of the sealing block, of the outer side of the connecting block, a mounting block is fixedly arranged on the outer side of the sliding block, and a limiting spring is arranged on the outer side of the mounting block. Positioning grooves in butt joint with the positioning blocks are formed in the two sides of the positioning frame. By means of the simple installation structure, the valve body can be conveniently assembled, the assembling stability of the valve body is guaranteed, meanwhile, operation of workers is facilitated, therefore, the working efficiency is effectively improved, the working intensity is reduced, the practical effect is good, and the valve is worthy of being used and popularized in the existing market.

This invention belongs to the field of high-speed digital circuit technology. It provides an optimization system for a signal transmission circuit board using a stripline layout, comprising: a data coupling module, which collects resin parameters and stripline structure parameters through sensors, calculates the real-time resin flow velocity using the Poiseuille flow formula, integrates and cleans the data to construct a coupling model, and outputs real-time lateral thrust; a displacement analysis module, which superimposes curing shrinkage stress to construct a displacement prediction matrix and determines whether a shift has occurred through lateral displacement characteristics; if a shift occurs, a system construction module, which constructs a three-dimensional real-time suppression system, collaboratively applies reverse constraint force, and adjusts pressure and temperature; and a collaborative control module, which, for situations where control does not meet expectations, identifies the root cause by analyzing the constraint efficiency of each unit. If the cause is insufficient synergy, it optimizes the unit control timing and parameter matching to achieve real-time control of interlayer shift.

The utility model discloses a transformer and electric reactor magnetic shunt fixing device which comprises a web plate, a magnetic shunt, an iron yoke and an iron core column, a reinforcing plate is installed on the web plate, the magnetic shunt is installed between the iron yoke and the iron core column, a magnetic shunt fixing structure is installed between the reinforcing plate and the magnetic shunt, the magnetic shunt fixing structure comprises a gasket and a bolt, the reinforcing plate is provided with an opening, and the gasket and the bolt are arranged in the opening. Bolts penetrate through the gaskets and the holes of the reinforcing plates and are installed on the clamping plates of the magnetic shunt. According to the utility model, the magnetic shunt fixing structure is arranged between the magnetic shunt and the web reinforcing plate of the transformer and reactor equipment, so that the horizontal assembly of the magnetic shunt can be maintained, the effect of absorbing the magnetic leakage of the coil is improved, the vibration of the magnetic shunt is reduced, the process is simple, and the manufacturing cost is saved.

The utility model relates to the technical field of automobiles, and provides a skylight aqueduct plug, an automobile body structure and an automobile, an inserting channel with openings at two ends is formed on a plug body of the plug, one end of an aqueduct is inserted into the inserting channel, and a clamping part is formed on the peripheral wall surface of the plug body, so that the aqueduct is inserted into the inserting channel. The plug body can be prevented from moving along the drainage hole by abutting the clamping portion against the portion, at the drainage hole, of the vehicle body, the assembly stability when one end of the water guide pipe is inserted into the insertion channel in the plug body is guaranteed, the annular portion is formed in the inner wall face of the plug body, the insertion channel can be formed through the through holes of all the annular portion, and therefore the plug body can be conveniently assembled and disassembled. Therefore, the outer wall face of the water guide pipe abuts against the inner wall face of the through hole of the annular part, extrusion force is applied to the water guide pipe, it is guaranteed that the water guide pipe can be stably inserted into the insertion channel, and the installation stability of the water guide pipe and the vehicle body is guaranteed.

The utility model relates to the field of remote control car assembly, and discloses a rotary car body axle assembly device for remote control car assembly, which comprises a frame, a rotary table rotatably mounted on the frame, and a plurality of conveying lines circumferentially fixed on the frame along the axis of the rotary table. A mechanical clamping jaw is installed on the conveying line corresponding to a station used for controlling feeding and discharging of a vehicle body on the rotary table, a shaft clamp is installed on the conveying line corresponding to a station used for installing an axle on the rotary table, a motor is installed on the machine frame, and an output shaft of the motor is in transmission connection with the center line of the rotary table. An assembling component for accurately positioning the mounting positions of the vehicle body and the axle is arranged on the rotary table; the rotary vehicle body and axle assembling equipment is provided with the rotating assembly, the limiting state of the vehicle body can be autonomously regulated and controlled according to changes of the assembling stations, the equipment control automation degree is high, and assembling operation of the vehicle body and an axle can be rapidly completed.

The invention provides an optical lens group, which sequentially comprises an optical group comprising a partial reflection and partial transmission element, and an absorption type polarization element, a reflection type polarization element, a phase delay element, a first lens and a second lens which are sequentially arranged from the eye side to the image source side; and a third lens; wherein the partial reflection and partial transmission element is arranged between the first lens and the third lens; at least one of the first lens and the second lens has positive refractive power; when the optical lens group is zoomed from a near point to a far point, the optical lens group moves from an image source side to an eye side. When specific conditions are satisfied, weight can be reduced and imaging quality can be ensured.