94results about How to "Reduce load requirements" patented technology

The invention discloses a three-degree-of-freedom series-parallel hybrid humanoid robot waist structure, and relates to the technical field of robots. The defects that an existing multi-degree-of-freedom waist structure is not compact enough, limited in precision, low in rigidity and poor in stability are overcome. The robot comprises a yaw joint mechanism and a pitching-sidesway joint mechanism which are connected in series, upper limbs and legs of the robot are connected through the yaw joint mechanism and the pitching-sidesway joint mechanism, and the yaw joint mechanism can drive the upper limbs of the robot to do yaw motion; the pitching-sidesway joint mechanism comprises a movable platform, a static platform, a joint universal joint and two joint driving assemblies, the movable platform is fixedly connected with the upper limbs of the robot, the static platform is fixedly connected with the legs of the robot, the joint universal joint is connected with the movable platform and the static platform, and the two joint driving assemblies are symmetrically arranged on the left side and the right side of the joint universal joint; and the two joint driving assemblies are connected with the movable platform and the static platform correspondingly, and when the two joint driving assemblies drive the movable platform, the movable platform can do pitching motion and / or side-sway motion around the joint universal joint.

The invention discloses a multi-column parallel automatic chromatographic system, which is provided with more than two chromatographic columns connected in parallel, and all the chromatographic columns share a mobile phase device, a detection device and other devices, and has the following advantages: (1) the chromatographic columns connected in parallel share a set of software control system, so that the simultaneous operation of the plurality of chromatographic columns is realized; the product analysis, separation and purification time is shortened, and the labor cost is reduced; (2) the chromatographic columns connected in parallel share a mobile phase device, a detector device, a fraction collector and other devices, and equipment is reduced; and (3) common parts are used, so that the plant area is reduced, the load-bearing requirement is reduced, and the load-bearing and area requirements of the plant are reduced, thereby reducing the construction cost.

The invention provides a circular pipeline laminar flow calculation method and system and a water supply and heat supply measuring device.The method comprises the steps that cylindrical fluid infinitesimal elements which are coaxial with a circular pipeline and equal to the circular pipeline in length are taken from the circular pipeline, and stress analysis is conducted on the cylindrical fluid infinitesimal elements to obtain a shear stress expression on the side wall of the cylindrical fluid infinitesimal elements; obtaining a differential relation between the speed and the radius according to a shear stress expression and a Newton internal friction law; integrating the differential relation according to the inner radius of the circular pipeline and the velocity of the fluid mass point on the inner wall of the circular pipeline to obtain velocity distribution; and calculating the flow based on the speed distribution according to the inner radius and the length of the circular pipeline, the pressure on the two end surfaces and the viscosity and the density of the fluid. According to the technical scheme, the technical problems that in the prior art, due to the fact that a large number of flow meters are additionally connected in long-distance pipeline transportation, the load of a transportation power source is increased, and measurement of water meters and heat meters in the water supply and heating field is inaccurate are solved.

The utility model discloses a hoisting feeding device and a feeding system, and relates to the field of feeding facilities, the hoisting feeding device is used for feeding to a feeding port, and the hoisting feeding device comprises at least two sets of track supports which are arranged at intervals along the arrangement track of the feeding port, the track support comprises a stand column used for being fixed to a building foundation and a mounting beam fixed to the stand column and extending to the position above a feeding port arrangement track. The hanger rail is arranged according to the arrangement track of a feeding port and is fixed on each mounting beam; and the walking hoisting mechanism is mounted on the hoisting rail and can hoist materials along the hoisting rail. A single-side supporting structure is formed through the rail support, the hanger rail and the walking hoisting mechanism are used as a hoisting and feeding execution body, compared with a traveling hoisting system, the overall structure is light, the requirements for bearing and the structure of the installation environment are low, interference with the surrounding environment is not likely to happen, and all-directional covering of all feeding ports is easy to achieve; and the application scene is wider.

The invention relates to the technical field of special vehicles, and discloses a double-fan structure pure electric road sweeper which comprises a frame, a garbage can and sweeping equipment, and further comprises a first fan and a second fan which are used for generating negative pressure in a box body of the garbage can, and a driving motor used for directly driving the first fan and the second fan, the first draught fan and the second draught fan are connected to the two ends of a rotating shaft of the driving motor in a direct drive mode correspondingly and communicate with an inner cavity of the dustbin through a first pipeline and a second pipeline correspondingly. The bottom of the garbage can is connected with a suction structure used for sucking garbage into a box of the garbage can, and the suction structure is arranged close to the sweeping equipment. The motor rotation stability and the vehicle energy efficiency are effectively improved.

The utility model belongs to the technical field of photovoltaic modules, and particularly relates to a photovoltaic module mounting fixture for a color steel tile roof, which comprises two positioning mechanisms arranged on two adjacent lockrand edges on a color steel tile. The number of the fixing mechanisms is two, the fixing mechanisms are in one-to-one correspondence with the positioning mechanisms, and the two fixing mechanisms are arranged on the sides, close to each other, of the two positioning mechanisms correspondingly; the filler is arranged between the positioning mechanism and the fixing mechanism; and the photovoltaic panel is detachably mounted between the two fixing mechanisms. The installation process of the photovoltaic assembly can be simplified, the roof load is reduced, and the cost is reduced.

The utility model relates to the technical field of container lifting, in particular to a container lifting appliance for detecting the direction of a container door, which comprises a lifting appliance body for lifting a container, the container is provided with a first side plate and a second side plate, the first side plate is provided with the container door, and corner castings are respectively arranged at four corners above the container; a lock head corresponding to the corner casting is rotationally connected to the lifting appliance body, a driving assembly for driving the lock head to rotate is arranged on the lifting appliance body, first detection rods are slidably connected to the two ends, corresponding to the length direction of the container, of the lifting appliance body correspondingly, and the distance between the first detection rods is larger than the distance between the first side plate and the second side plate. The first detection rods are in transmission connection with first sensors. The orientation of the box door is detected through whether the first detection rod and the second side plate are pressed or not, the box door orientation detection device has the advantages of being simple and direct in structure and accurate and reliable in detection, and the orientation of the box door can be simply, conveniently and accurately detected.

The present invention discloses an integral sliding tool and method for a lower cross beam of a quay crane and a trolley travel assembly, comprising a pad beam, an anti-tilt leg, a cantilever beam, a lifting device, a sliding device and an MGE slider; the pad beam is arranged directly below the lower cross beam; the cantilever beam is arranged above the pad beam and connected to the lower cross beam; the upper end of the anti-tilt leg is connected to the pad beam, and the lower end is connected to the MGE slider, and the MGE slider cooperates with the upper surface of the pad beam; the lifting device is arranged on the upper surface of the pad beam to lift the cantilever beam; the sliding device is arranged on the upper surface of the pad beam and connected to the anti-tilt leg. The present invention solves the problem that the existing trolley and the lower cross beam are difficult to shift, and ensures the smooth shifting of the trolley and the lower cross beam.

The utility model relates to the technical field of greenhouses, and provides a greenhouse environment mobile acquisition device which comprises an environment acquisition device. The track is arranged at the top of the greenhouse in the first direction, a plurality of collection point positions are arranged on the track at intervals, and each collection point position is provided with a position detection component; the transmission part is movably arranged on the track, is connected with the environment acquisition device and is used for driving the environment acquisition device to move on the track in the first direction and staying at each acquisition point position to complete environment information acquisition; the driving device is in transmission connection with the transmission part and used for driving the transmission part to move in the first direction; the controller is electrically connected with the driving device and used for controlling starting and stopping of the driving device; according to the utility model, greenhouse space utilization is optimized, dynamic coverage is realized with less equipment, data is closer to actual environment distribution, and greenhouses with different areas can be flexibly adapted.

The invention provides a damping device, a workpiece table system and photoetching machine equipment. The damping device comprises an inner frame, a damper, an outer frame, a balance mass block and a bottom frame. A mask table, an objective lens unit and a workpiece table platform are arranged on the inner frame, and the workpiece table platform supports the workpiece table micro-motion part; an inner frame is arranged on the shock absorber; the shock absorber is arranged on the outer frame, the outer frame is further used for arranging the lighting unit, and the outer frame is used for being arranged on a foundation. The bottom frame is arranged on a foundation; a balance mass block is arranged on the bottom frame; and the balance mass block is used for arranging a workpiece table coarse moving part. According to the configuration, the dynamic stability of the photoetching machine vibration damping framework can be improved, the bearing requirement of the vibration damper is reduced, and the design difficulty and cost of the vibration damper are reduced.

The present invention provides a stacked satellite rocket clamping and releasing mechanism, including: a clamping mechanism, a base, a transfer mechanism, a thrust mechanism and an unlocking mechanism. The unlocking mechanism includes: a plurality of flexible strips and an unlocker. The installation body of the release device is the base, and a plurality of stacked satellites are neatly stacked and placed on the base. At least two sets of the release devices provided by the present invention are symmetrically arranged around the stacked satellite. The larger clamping force required by the clamping mechanism is provided by the smaller pulling force of the flexible strips of the transfer mechanism through the force amplification of the transfer mechanism. The impact between the impact power source and the clamped target is buffered by multiple places such as the flexible strips, the transfer mechanism, and the clamping mechanism. One unlocker can be used to unlock multiple clamping mechanisms, and there is no need to set an unlocker at each clamping mechanism. The release device provided by the present invention has a small spatial envelope, low load-bearing requirements for the unlocker, small unlocking impact, and a small number of unlockers required, and can achieve the clamping and release of multiple targets stacked vertically.

The invention relates to an assembly type cofferdam and a construction method thereof, in multiple groups of cofferdam units with a preset number, each group of cofferdam units is inserted into an insertion module through a matching piece to form a section of cofferdam module. One section of cofferdam module is hoisted to a designated place and lowered to a designated elevation, then the next section of cofferdam module is hoisted, and after the next section of cofferdam module and the lowered cofferdam module are connected in an inserted mode through the first lock catch connector and the second lock catch connector, the next section of cofferdam module and the lowered cofferdam module are lowered to the designated elevation till all the cofferdam modules are enclosed to form the fabricated cofferdam. In the splicing process, welding is not needed, the size and the weight of each cofferdam module are small, and the bearing requirement for hoisting equipment and a construction platform is low. In the dismantling process, only the cofferdam module needs to be hoisted, all the cofferdam units of the cofferdam module are dismantled through the inserting modules and the matching pieces, cutting and underwater operation are not needed, the structure of the dismantled cofferdam units is complete, the construction efficiency is effectively improved, and the construction cost is reduced.

The present invention provides a distributed unmanned aerial vehicle cluster autonomous formation flight method, device and storage medium, which relates to unmanned aerial vehicle navigation, including: constructing a three-dimensional map; obtaining an initial path through path search; extracting a safe flight corridor; obtaining trajectory information of other unmanned aerial vehicles, and calculating the optimal formation-keeping trajectory of the unmanned aerial vehicle; calculating the actual flight trajectory of the unmanned aerial vehicle according to the optimal formation-keeping trajectory and airborne sensor data; executing the actual flight trajectory and publishing the actual flight trajectory to a wireless broadcast network for other unmanned aerial vehicles to obtain. The distributed unmanned aerial vehicle cluster autonomous formation flight method proposed by the present invention has formation-keeping awareness, generates a theoretical optimal formation trajectory that considers the scaling of the formation scale, and guides the optimization of the actual flight trajectory of the unmanned aerial vehicle based on this, thereby improving the formation-keeping effect of the unmanned aerial vehicle cluster, and enabling it to quickly plan a safe, efficient and actively formation-keeping flight trajectory in a complex and dense obstacle environment.

The invention provides a filter stick disc storing and taking device. The filter stick disc storing and taking device comprises a goods shelf, a pair of material box conveying lines, a pair of elevators and a plurality of shuttle vehicles. The goods shelf is used for storing a material box and supporting the shuttle vehicle to walk; the pair of material box conveying lines is symmetrically arranged on the lower portion of the goods shelf and used for conveying material boxes into the goods shelf or conveying the material boxes out of the goods shelf. The pair of elevators are arranged at the two ends of the goods shelf correspondingly and used for driving the shuttle vehicle to conduct layer changing operation on the goods shelf; the shuttle vehicles are movably arranged on the goods shelf, the material box conveying line and the elevator and used for taking, storing and transporting material boxes. The shuttle vehicles run in the goods shelf in an annular mode. According to the filter stick disc storing and taking device, the storage space is increased, the feeding and discharging efficiency is improved, and lossless transportation and feeding and discharging are achieved.

The invention discloses a roof assembly part of a transformer substation and an assembly type roof, and relates to the technical field of roof construction. The roof assembly part comprises a bottom plate, an inner core structure, a first connecting structure, a second connecting structure and a panel; wherein a mounting position is formed on the bottom plate; the inner core structure comprises a waterproof layer and a heat preservation layer which are sequentially arranged from top to bottom, and the heat preservation layer is installed at the installation position; the first connecting structure and the second connecting structure are arranged at the two ends, in the transverse direction, of the inner core structure correspondingly, the first connecting structure and the second connecting structure are both installed at the installation position, the first connecting structure is used for being connected with the second connecting structure of another roof assembly part, and the second connecting structure is used for being connected with the first connecting structure of another roof assembly part; and the panel covers the tops of the waterproof layer, the first connecting structure and the second connecting structure. According to the roof assembly part, the construction efficiency of roof construction can be improved, and the construction period is shortened.

The invention relates to a large current generating device and current transformer verification equipment, and relates to the field of extra-high voltage power supply equipment, and the large current generating device comprises a three-phase rectification unit, an IGBT full-bridge conversion unit, an isolation conversion transformer, a rear-end capacitance compensation unit and a control feedback unit. The three-phase rectification unit can convert three-phase alternating current into direct current, the IGBT full-bridge conversion unit is connected with the three-phase rectification unit and can convert the direct current into single-phase alternating current, and the input end of the isolation conversion transformer is connected with the IGBT full-bridge conversion unit and can increase the current of the single-phase alternating current and output large-current alternating current. The rear-end capacitance compensation unit is connected to the output end of the isolation conversion transformer to improve the power factor of the large-current alternating current, and the control feedback unit is arranged between the output end of the isolation conversion transformer and the IGBT full-bridge conversion unit, so that the output current can be improved, and the weight and the cost of the device can be reduced.

The invention belongs to the technical field of photovoltaic power generation, and provides an integrated power generation panel and a production method thereof.The integrated power generation panel comprises a plurality of power generation panels, and each power generation panel is of a stacked structure; the laminated structure comprises a front plate, a first packaging adhesive film, a battery string, a second packaging adhesive film, an insulating layer, a third packaging adhesive film and a rear plate which are laminated in sequence; bending parts are arranged on the two sides of the rear plate; when the power generation panels are integrated, the adjacent power generation panels are in lap joint through the bending parts. According to the power generation panel, a color steel tile roof and a building wall surface are directly replaced by the rear plate, meanwhile, a corrugated structure is arranged, the power generation panel has the technical characteristics of being convenient and fast to install, safe and durable in structure, resistant to impact, waterproof, fireproof, beneficial to later maintenance and the like, and the panel is low in overall investment cost, short in recovery period, attractive in appearance, simple in process and capable of being industrially popularized.

The utility model belongs to the field of tower drum transportation, and discloses a split type wind power tower drum loading and transporting tool which comprises a base installed on a transporting vehicle and a supporting assembly installed on the base and used for fixing a tower drum. The supporting assembly comprises a supporting plate and at least one positioning piece arranged on the front face of the supporting plate. Supporting arms extending out of the top plane of the supporting plate are arranged at the two ends of the supporting plate, and a plurality of fixing holes connected with a tower drum flange through bolts are formed in the supporting arms. The positioning piece comprises a locking seat welded to the front face of the supporting plate, a locking pin arranged on the side face of the locking seat and a positioning pin arranged at the bottom of the locking seat, the locking seat is provided with an insertion hole matched with the positioning pin, and the positioning pin is provided with a limiting groove connected with the locking pin in an inserted mode; the two supporting assemblies are connected in an inserted mode through the positioning pins and the locking seats to be connected in a stacked mode. The tower drum transport vehicle is simple in structure and reasonable in design, a plurality of tower drums can be stacked on the transport vehicle, and the stability of the tower drums can be guaranteed.

The utility model relates to the field of daily monitoring of boilers, in particular to an online boiler expansion and vibration measuring instrument which comprises a measuring device and a target assembly, the target assembly is fixedly connected to a boiler, the measuring device is arranged on a fixing frame on the periphery of the boiler, and the fixing frame is not in contact with the boiler and the target assembly; the measuring device comprises a shell, one end of the shell is connected with a camera assembly, and the camera assembly is arranged on the side close to the target; an electrical system and a gas generating device are arranged in the shell, the gas generating device is connected with a gas nozzle arranged on the shell, and generated gas can be blown to the target assembly through the gas nozzle; the target assembly comprises a support and a measuring ball arranged on the support, and the target assembly is connected to the boiler through the support.

The utility model discloses a feeding and discharging jig for a clutch shell, which is characterized by comprising a jig body with a connecting flange, a fixed base plate, a three-jaw cylinder, three lengthened clamping jaws and three groups of guide mechanisms, the fixed base plate is fixedly arranged on one side of the jig body, the three-jaw cylinder is fixedly arranged on the fixed base plate, and the three lengthened clamping jaws are fixedly arranged on the three groups of guide mechanisms. Each lengthened clamping jaw is outwards and fixedly arranged on one movable pneumatic claw on the three-claw air cylinder in the radial direction, and each lengthened clamping jaw is arranged on the fixed base plate in a sliding manner through a group of guide mechanisms; the fixture has the advantages that the mode that the lengthened clamping jaws are additionally arranged on the three-jaw air cylinder is adopted, light-weight and large-size clutch shell parts can be clamped, the three-jaw air cylinder of the small specification can be selected to clamp larger-size workpieces, the overall cost of the fixture is reduced, the economical efficiency of the fixture is improved, meanwhile, the overall weight of the fixture can be reduced, and the production efficiency is improved. And the load requirement on the robot is reduced.

The utility model relates to the technical field of building construction, and discloses a large-area hollow brick wall slurry-free wall building structure which comprises a concrete wall body and mounting plates arranged on the upper side and the lower side of the inner wall of the concrete wall body and further comprises a plurality of first mounting pipes and first mounting rods which are arranged on the tops of the mounting plates below the inner wall of the concrete wall body. A plurality of second mounting pipes and second mounting rods are arranged at the bottom of the upper mounting plate; the hollow window is derived from an ancient hollow window, the wall building operation can be completed without waiting for mortar solidification, the construction speed can be greatly increased, the use of mortar is reduced, the resource consumption is reduced, meanwhile, construction waste generated in the construction process is reduced, environmental protection is facilitated, and the construction cost is reduced. In addition, the structure can keep the attractiveness of the wall bricks, pollution and damage of mortar to the wall face are reduced, the overall weight of the wall body is reduced, the load requirement for a foundation structure is lowered, and certain convenience is brought to building design and construction.

The invention relates to the technical field of dust concentration detection, in particular to a respirable dust concentration measuring method and sensor device.The respirable dust concentration measuring method comprises the steps that a draught fan of the respirable dust concentration measuring sensor device is started, and dust-containing air enters a separation module of the respirable dust concentration measuring sensor device; when the separated airflow containing the respirable dust stably passes through the concentration detection module of the respirable dust concentration measurement sensor equipment, the fan is closed, then the concentration detection module is started, and the respirable dust concentration at the concentration detection module at the moment is measured; the respirable dust concentration measured by the concentration detection module within a short time when the fan is shut down can be regarded as the respirable dust concentration measured when airflow passes through the concentration detection module when the fan continuously operates, so that the fan and the concentration detection module are sequentially and respectively operated, the electrical load can be reduced, the equipment load demand is reduced, and the power consumption is reduced. And the method is suitable for long-distance on-load use scenes.

The present application relates to a combined cofferdam and a cofferdam module that is easy to splice. The cofferdam module includes a cofferdam box, a first locking joint and a second locking joint. The second end of the cofferdam module located above is plugged into the plug-in space of the plug-in unit of the cofferdam module located below and limitedly matched, and each cofferdam module is spliced ​​up and down to form a cofferdam module. After a cofferdam module is lowered, the cofferdam module of another cofferdam module and the cofferdam module of the adjacent cofferdam module are plugged together through the first locking joint and the second locking joint to splice into a combined cofferdam. No welding is required during the splicing process, and the size and weight of each cofferdam module are small, and the load-bearing requirements for the lifting equipment are low. When dismantling, it is only necessary to lift the cofferdam modules one by one, and then disassemble the cofferdam modules of the cofferdam module through the plug-in unit and the matching parts. No cutting is required during the disassembly process. The structure of the cofferdam module after dismantling is complete, which effectively improves the construction efficiency and reduces the construction cost.

The utility model relates to the technical field of conveying devices, in particular to a belt conveying tail end transfer device. A belt conveying tail end transferring device comprises a material taking executor, a material conveying belt, a material conveying belt, a material conveying belt, a material conveying belt, a material conveying belt, a material conveying belt and a material conveying belt, and is characterized in that the material taking executor is a suction cup, and the suction face is arranged on the front side of the outer end; the material taking actuator is connected to the moving part, the moving part comprises a lifting assembly, the lifting assembly comprises a mounting plate, the lifting assembly is used for driving the material taking actuator to move in the direction perpendicular to the conveying direction of the conveying belt, a second limiting structure is arranged on the mounting plate, and the second limiting structure is used for limiting the material taking actuator to move in the direction perpendicular to the conveying direction of the conveying belt. The second limiting structure is used for preventing the material taking actuator from rotating downwards to be over-position, and when the material taking actuator rotates to be attached to the second limiting structure, the included angle between the suction face of the material taking actuator and the horizontal plane is a preset acute angle. And the materials do not need to be wholly lifted during material taking, and deformation of outer packages is not prone to being caused.

The invention relates to the technical field of noise control, in particular to a cable-supported sound insulation barrier. The sound insulation screen comprises side sound insulation screens arranged on the two sides of a road and a bridge and further comprises a top sound insulation screen arranged above the road and the bridge, the top sound insulation screen comprises a bearing cable net, a main frame, side frames and sound insulation plates, the main frame comprises main stand columns and main beams, and the main stand columns are arranged in the middle of the road and the bridge at intervals in the longitudinal direction of the road and the bridge; the girders are fixedly arranged at the upper parts of the main upright posts along the longitudinal direction of the road bridge; the side frame comprises side stand columns and side beams, the side stand columns are fixedly arranged on the edges of a road bridge at intervals in the longitudinal direction of the road bridge, and the side beams are fixedly arranged on the tops of the side stand columns in the longitudinal direction of the road bridge. The bearing cable net comprises a plurality of main inhaul cables, the main inhaul cables roughly extend in the transverse direction of the road bridge, the two ends of each main inhaul cable are fixed to the corresponding main beam and the corresponding edge beam respectively, the main inhaul cables are arranged at intervals in the longitudinal direction of the road bridge, and the sound insulation plates are arranged on the bearing cable net. The method can be widely applied to noise control projects in the traffic and transportation fields such as highways, railways, subways and high-speed rails.

The invention discloses a distributed OTA upgrading method and system for an intelligent networked automobile, and belongs to the technical field of intelligent networked automobiles, and the method comprises the steps: when a vehicle has software to be upgraded, an OTA cloud issues a software upgrading task of each software to be upgraded to an OTA slave node of a group where each software to be upgraded is located; after receiving the software upgrading task, the OTA slave node downloads the upgrading packages of all the software to be upgraded in the group where the OTA slave node is located from the OTA cloud end, and all the software to be upgraded in the group where the OTA slave node is located is upgraded through the downloaded upgrading packages. The load and space requirements on the OTA main node are reduced, and the upgrading success rate, the upgrading stability and the upgrading efficiency of the whole vehicle OTA upgrading are improved.

The utility model discloses a light roof photovoltaic support, and belongs to the technical field of solar photovoltaic development equipment. The support comprises a support body, a surrounding plate and a photovoltaic assembly, the support body comprises a triangular framework and a photovoltaic guide rail, and the triangular framework is a right-angled triangular support body composed of a bottom beam, a stand column and an oblique beam; a plurality of triangular frameworks are arranged in parallel at equal intervals, a plurality of parallel photovoltaic guide rails transversely penetrate through the triangular frameworks to connect all the triangular frameworks into a complete frame body, and surrounding plates are installed at holes in the side faces and the back face of the frame body to block the holes; the photovoltaic module is fixed on the frame body through a pressing block; the bottom of the bottom beam is coated with structural adhesive, and the frame body is fixed to the installation position in a bonding mode. The utility model has the advantages of light dead weight, convenience in installation, stable structure and strong wind resistance, does not damage the structural layer and the waterproof thermal insulation layer of the original roof, can be installed on the roof with smaller reserved load, and has a wide application range.

The invention discloses a fine adjustment mechanism for the spatial intersection degree of a rotating shaft of an antenna rotary table, relates to the field of antenna housing testing, and aims to solve the problem that more accurate adjustment is difficult to realize due to the fact that only a small amount of adjustment can be realized in X and Y directions in the conventional mode. The fine adjustment mechanism comprises a fine adjustment mechanism main body assembly which comprises an X-direction adjusting seat, an azimuth base, an azimuth adjusting seat and a pitching adjusting seat; one end face of the X-direction adjusting seat is connected with the front-back telescopic assembly, and the other end face of the X-direction adjusting seat is provided with an orientation base capable of moving along the X-direction adjusting seat. An azimuth adjusting seat capable of moving along the azimuth base is arranged on the end surface, far away from the X-direction adjusting seat, of the azimuth base; an elevation angle adjusting seat capable of moving along the azimuth adjusting seat is arranged on the end surface, far away from the azimuth base, of the azimuth adjusting seat; the end face, away from the azimuth adjusting seat, of the pitching adjusting seat is connected with the antenna rotary table. Fine fine adjustment of four degrees of freedom of X direction, Y direction, orientation and pitching is realized, and the technical problem in the field is solved.