737 results about "Semi-trailer" patented technology

The invention belongs to the technical field of vehicle steering control, and relates to a van semitrailer steering synchronization angle closed-loop test calibration system, which comprises the following steps of: firstly, executing a static steering test on a no-load combined vehicle, and constructing a mapping reference table of a saddle space position and an ideal hinge angle; then multi-working-condition dynamic steering testing is carried out on the load combination vehicle, vehicle frame deformation data are collected in real time, the deformation data are converted into a hinge angle compensation value through a pre-trained deformation mechanical model, selective correction is carried out on the actually-measured hinge angle based on a deformation compensation starting threshold value, a calibration target is generated to reversely analyze the target saddle position, and the target saddle position is corrected; the problem that in the prior art, inevitable elastic structure deformation and real mechanical steering asynchronous faults of the van semitrailer under the actual dynamic load working condition cannot be fully considered and distinguished is effectively solved, and then multi-working-condition driving verification data are collected, deformation mechanical model parameters are iteratively updated, and a compensation threshold value generation strategy is generated. And closed-loop optimization is realized.

Provided are equipment and methods for intelligent mobile medical waste disposal and flue gas purification, and the equipment includes a vehicle-mounted mobile platform and a skid-mounted standard container; where, the vehicle-mounted mobile platform is composed of a standard semi-trailer truck and a truck carriage base; the vehicle-mounted mobile platform is used for realizing functions of mobile transportation, cargo loading, fuel loading and unloading, power charging and discharging and network information transmission; the skid-mounted standard container is loaded above the truck carriage base of the vehicle-mounted mobile platform; and the skid-mounted standard container consists of a standard container and contents in the standard container; and the contents include: an intelligent collection and transportation feeding system, a medical waste pyrolysis incineration system, an incineration flue gas purification system, and an intelligent management and control system for medical waste disposal.

The invention discloses a semitrailer frame and a loading and unloading method thereof, and relates to the technical field of semitrailers, the semitrailer frame comprises a longitudinal beam frame, a plurality of cross beams are fixedly welded in the longitudinal beam frame and on the front side and the rear side of the longitudinal beam frame, a traction pin mechanism is arranged at the bottom of the longitudinal beam frame, and a plurality of first connecting holes are formed in the tops of the longitudinal beam frame and the cross beams; the panel mechanism comprises a connecting panel and a bearing panel, a plurality of first mounting grooves are formed in the connecting panel, first bolts are arranged in the first mounting grooves in a penetrating and threaded mode, the first bolts are in threaded connection with the first connecting holes, and the bottom of the connecting panel is attached to the top of the longitudinal beam frame and the top of the cross beam. Inertial impact force generated by the full-load carriage during emergency braking can be effectively buffered, so that a connecting and fixing mechanism between the carriage and the bearing panel and a frame are effectively prevented from being damaged by large inertial impact force, goods can be effectively prevented from being damaged by the large inertial impact force, and the transportation loss of the goods is reduced.

The invention relates to the technical field of battery management of hybrid power vehicles, in particular to a hybrid power semitrailer battery management system and a multi-mode balance control method, and the hybrid power semitrailer battery management system comprises a data acquisition module, a main control module, a balance execution module, a thermal management module, a communication interface module and a safety protection module. Accurate battery state estimation and dynamic parameter updating are realized through an advanced algorithm and a model, a decision basis is provided for equalization and thermal management, an active and passive hybrid architecture and an intelligent topology switching strategy are adopted, energy management between battery cells is efficiently realized, energy waste is avoided, wind speed and wind direction are dynamically regulated and controlled by applying reinforcement learning, and energy consumption is reduced. The temperature consistency of the battery cell is maintained with low energy consumption, the energy utilization efficiency, the state control precision and the operation safety of the battery management system are remarkably improved, the service life of the battery is effectively prolonged, and stable operation of the system is guaranteed.

The invention provides a semi-trailer rollover early warning method and system based on dynamic threshold value prediction. The early warning method comprises the steps that the transverse acceleration, the yaw velocity, the vehicle speed, the suspension pressure and the front lane curvature of a semi-trailer are obtained in real time; according to the collected and calculated data and a linear trend extrapolation method, constructing a dynamic rollover risk threshold function and a comprehensive risk index function, and calculating a rollover risk threshold, a real-time risk value and a predicted risk value; the item with the higher value in the real-time risk value and the predicted risk value is selected and compared with a rollover risk threshold value, and whether early warning is triggered or not is judged, and a control instruction is issued; the early warning system comprises a semitrailer state monitoring unit, a lane curvature recognition unit, a rollover risk threshold calculation unit, a real-time risk value calculation unit, a predicted risk value calculation unit and an early warning control unit, and is used for realizing the early warning method, so that the response speed and the judgment accuracy of the semitrailer rollover early warning system under variable working conditions are improved.

An auxiliary power system for an electric semi-truck is disclosed. The auxiliary power system includes a power storage device mounted to a semi-trailer. One or more main batteries provide propulsion to a semi-truck and are in electrical communication with the power storage device to receive auxiliary power therefrom. The power storage device is operable to increase the range over which the semi-truck travels between recharging. The power storage device may be configured to either provide supplemental power to increase the power output of the semi-truck in real-time or may be configured to increase the range between recharging of the main batteries of the semi-truck.

The invention relates to the technical field of transport vehicles, and discloses a new energy container transport semitrailer which comprises a semitrailer body and a container body hoisted above the semitrailer body. Two main beams are installed on the semi-trailer body, a plurality of cross beams are installed between the two main beams, loading blocks are installed in the cross beams, two inserting grooves are symmetrically formed in each loading block, a plurality of sets of inclined blocks are installed at the bottom of the box body, and each set of inclined blocks correspond to the two inserting grooves in the corresponding loading block. And two clamping pushing assemblies are arranged in the cross beam. The inclined blocks are matched with the protection assemblies, the clamping blocks and the limiting assemblies, guiding, fixing and limiting are achieved when the box body is hoisted and moves downwards, the lateral restraining force and the connecting strength are enhanced, the electromagnets are used for fixing the two sides of the bottom of the box body, the weight is evenly distributed, the main beam deformation risk is reduced, the pull ropes are matched with the protection assemblies to form a protection barrier, and safety is improved; the inclined block design avoids direct contact between the box body and the ground, and the service life is prolonged.

Systems and methods for predicting anomalies in a wheel system of a semi-trailer truck. One example system includes: a vibration sensor positioned to sense vibrations of the wheel system and an electronic processor communicatively coupled to the vibration sensor. The electronic processor is configured to determine a velocity profile of the semi-trailer truck; obtain a vibration measurement; determine, from the vibration measurement, a classified vibration level; determine whether the classified vibration level is indicative of an anomaly; identify, based on whether the classified vibration level is indicative of the anomaly and both the velocity profile and a reference classified vibration level, an anomaly existing within either or both of the semi-trailer truck wheel system or the road; and perform a mitigation action in response to identifying the anomaly.

The invention relates to a semitrailer traction pin assembly (1) for an articulated vehicle, comprising a traction pin (2) defining an axis of rotation (A) wherein the traction pin (2) has a traction pin flange (3) for directly or indirectly connecting the traction pin (2) to the semitrailer. The traction pin assembly (1) further comprises an angle measuring device (15) at least partially embedded in the traction pin (2), the device having a shaft (17) rotatably mounted about the axis of rotation (A), and a transmission member (18) connected to the shaft (17), the transmission member (18) being pivotable about the axis of rotation (A).

The invention relates to a commercial vehicle (3) comprising a tractor unit (4) and a semi-trailer (5), wherein the tractor unit (4) has cameras, a satellite navigation system, side mirrors (7) and / or mirror replacement cameras (7) having a first field of view (B1), wherein a radar sensor (8) is arranged at the rear of the tractor unit (4) such that it detects a second field of view (B2) under the semi-trailer (5) or trailer, which includes an area of ​​shadowing (A) by the semi-trailer (5) lying outside the first field of view (B1), wherein the tractor unit (4) further comprises a lane change assistance system configured to monitor areas next to, behind and to the side of the commercial vehicle (3) for other vehicles (6.1 to 6.4), to determine the position, speed and acceleration of detected vehicles (6.1 to 6.4) and to predict when approaching vehicles (6.1 to 6.4) will4) are located next to or near the commercial vehicle (3), when one of the vehicles (6.1 to 6.4) enters an area critical for a lane change of the commercial vehicle (3), to issue a warning in the commercial vehicle (3), to increase a warning level of the warning issued to the driver when a direction indicator (10) of the commercial vehicle (3) is switched on, in this case then, if the vehicle (6.1 to 6.4) decelerates, to withdraw the warning or reduce the warning level, and otherwise to maintain the warning.

The utility model discloses a folding ladder stand device capable of being used as a bearing surface, and relates to the technical field of semitrailer ladder stands. The carriage comprises a carriage body and a plurality of ladder stand bodies, a plurality of ladder stand lugs are fixedly arranged at the tail end of the carriage body, ladder stand rotating shafts are fixedly installed at one ends of the ladder stand bodies, sleeves are arranged on the outer walls of the ladder stand rotating shafts in a sliding mode, and a carriage rotating shaft is rotatably installed between every two adjacent ladder stand lugs. The outer walls of the multiple carriage rotating shafts are fixedly provided with linkage butt straps. According to the utility model, the ladder stand body which is horizontally aligned with the cargo carrying surface of the carriage body after being folded is arranged, so that the space of the cargo carrying surface of the carriage body is not occupied, and under the condition that the total length of a vehicle is consistent, the size of the cargo carrying surface of the vehicle using the ladder stand body is larger, and the ladder stand body can serve as a part of the cargo carrying surface to load more cargoes; and a fixing ring or a container lock and other devices can be placed on the upper plane of the crawling ladder body, so that the diversity of cargos is met.

The utility model discloses a container transportation semitrailer protection device, and relates to the technical field of container transportation. The protective device comprises a protective frame, a moving mechanism is arranged on the inner side of the protective frame, limiting mechanisms are arranged on the inner walls of the two sides of the protective frame, the moving mechanism comprises a limiting rod, the two ends of the limiting rod are fixedly connected with the inner walls of the two sides of the protective frame respectively, and two symmetrically-distributed limiting cylinders are arranged on the outer side of the limiting rod in a sliding mode. By means of the moving mechanism, stable sliding and positioning of the moving frame on the inner side of the protective frame are achieved, the accuracy and stability of moving of the moving frame are guaranteed through sliding connection of the positioning rod and the positioning cylinder, meanwhile, the moving frame is not prone to falling off, and the safety of the protective frame is improved. And the height can be limited in cooperation with a limiting mechanism, so that the purpose of adjusting the side protection height of the semi-trailer is achieved.

The invention belongs to the technical field of heavy-load transportation equipment, and discloses a semitrailer bearing type frame structure and a semitrailer, and the semitrailer bearing type frame structure comprises a longitudinal beam serving as a core bearing structure of a semitrailer frame; the cross beams are connected to the interiors of the longitudinal beams and used for strengthening the local strength of the frame; the rib plate is connected to the outer side of the longitudinal beam and used for supporting an object; the containing box is connected to the longitudinal beam and used for containing objects, and the lamp holder is connected to the longitudinal beam and used for achieving a warning effect; the alarm is connected to the longitudinal beam and is used for warning; the hydraulic rod can have the function of deflection angle adjustment, the supporting disc can actively adapt to the ground form when facing complex terrains such as ramps and potholes, local suspension caused by ground fluctuation is avoided, stable supporting of the supporting feet is guaranteed, and the applicability of a vehicle in scenes such as non-paved road surfaces and loading and unloading sites is improved.

A rear aerodynamic skirt assembly is configured to be mounted to a semi-trailer rear to the semi-trailer axle(s) and front of the rear underride guard. The rear aerodynamic skirt assembly comprises a sheet of material and securing mechanisms. The shape of the sheet of material and the nature of the securing mechanism used to mount the sheet of material to the semi-trailer provide the desired air-deflecting function while providing the resilience necessary to resist to risks associated with being mounted to a vehicle, e.g., a semi-trailer.

The invention relates to the technical field of welding, and particularly discloses automatic assembly welding equipment for a main frame of a semi-trailer, which is used for performing assembly welding processing on a main longitudinal beam and an auxiliary longitudinal beam in the main frame and comprises a placing frame, a transverse moving unit, a longitudinal moving unit, a pressing unit, a welding unit and a guiding unit, the transverse moving unit drives the auxiliary longitudinal beam to transversely move, and it is ensured that the auxiliary longitudinal beam is accurately attached to the main longitudinal beam; a top pressing roller of the pressing unit applies vertical downward pressure to the auxiliary longitudinal beam, a side pressing roller applies lateral extrusion force, buckling deformation of the auxiliary longitudinal beam in the welding process is effectively restrained through the dual effects, the assembly straightness and relative position precision of the main longitudinal beam and the auxiliary longitudinal beam are guaranteed, and dislocation is avoided; the guide unit guides the welding gun head in real time based on the extending path of the V-shaped groove of the auxiliary longitudinal beam, it is ensured that the welding gun head always moves along a preset track in the welding process, and deviation is prevented. And the longitudinal moving unit is combined to drive the welding gun to feed at a constant speed, so that the centering degree and continuity of a V-shaped groove welding seam are effectively improved, and the welding quality consistency is guaranteed.

The invention relates to a semitrailer frame combination tool and a manufacturing method thereof. A limiting mechanism comprises a hood, a bearing plate rotationally installed on one side of the hood and limiting units arranged on the bearing plate in a sliding mode and matched with two longitudinal beams correspondingly. The supporting frame can be used for lifting the transverse edge beam when the transverse edge beam is not completely fixed, so that the parallelism of the welded and formed transverse beam is guaranteed; the whole frame is driven by the turnover limiting mechanism to turn over together, and the posture of the frame can be adjusted according to the welding position when the connecting beam and the suspension are welded, so that the welding difficulty is reduced; the longitudinal beam is centered, positioned and clamped in the mode that the two clamping plates and the two positioning plates are gathered together, the limiting mechanisms at the two ends are kept coaxial, overturning can be accurately achieved, and the levelness of a frame before and after overturning is kept unchanged.

The invention discloses a semitrailer rear axle electric control hydraulic steering system based on multi-sensor fusion. The semitrailer rear axle electric control hydraulic steering system comprises a control unit, a sensor system, a motor system and a hydraulic system. The sensor system comprises a vehicle speed sensor, a folding angle sensor and a steering angle sensor; the motor system comprises a motor and a motor controller; the hydraulic system comprises a hydraulic pump, a proportional servo valve and a hydraulic cylinder; during working; the control unit is used for automatically calculating a target steering angle through the vehicle speed information and the folding angle information, comparing the target steering angle with feedback actual steering angle data to obtain an error signal, and outputting a control current of the proportional servo valve according to the error signal; the motor provides power for the hydraulic pump, so that hydraulic oil is provided for the hydraulic cylinder, the opening degree of the proportional servo valve is adjusted under the action of control current, then the flow of the hydraulic cylinder is controlled, and the hydraulic cylinder is used for driving a rear axle of the semitrailer to move, so that the rear axle generates a corresponding steering angle.

Devices are for compensating for the roll of a fifth-wheel coupling, such as on a prime mover towing a semi-trailer. An automated compensation system for a fifth-wheel coupling mounted on a towing vehicle unit includes a first pivoting support to support one lateral side of the fifth-wheel coupling; a second pivoting support to support an opposite lateral side of the fifth-wheel coupling; an actuator configured to cause movement of the first and second pivoting supports; a sensor to sense a parameter relevant to determining whether roll compensation is required for the vehicle; a controller configured to receive a sensor output of the sensor and to determine whether roll compensation is required based on the sensor output, the controller being further configured to issue a control signal to cause the actuator to move the first and second pivoting supports when the controller determines that roll compensation is required.

The invention provides a parking path planning method and device of a semitrailer and terminal equipment. The method comprises the steps that the initial vehicle state, the target parking position and the parking area of the semitrailer are obtained; converting the semitrailer system model corresponding to the semitrailer into an equivalent single vehicle model; wherein the trailer rear axle center of the semitrailer is determined as the rear axle center of the single-vehicle model, the center distance between the hinged point of the tractor of the semitrailer and the trailer and the rear axle center of the trailer is determined as the single-vehicle axle distance in the single-vehicle model, and the tractor is determined as the single-vehicle wheel of the single-vehicle model; determining a model node path of the single vehicle model in the parking area based on a mixed A * algorithm by using the initial vehicle state and the target parking position; and determining the parking path of the tractor according to the model node path, the corresponding relationship between the semitrailer system model and the single vehicle model and the kinematics relationship between the tractor and the trailer. According to the method, the parking safety and efficiency of the semitrailer can be improved.

The invention provides a multi-axle vehicle modeling method fused with stability parameter estimation, and aims to solve the problems that in the multi-axle vehicle theoretical modeling process, part of stability parameters are unknown, and the real-time performance and working condition adaptability of a single identification method are insufficient, and the multi-axle vehicle modeling method comprises the following steps: firstly, establishing a semi-trailer six-degree-of-freedom dynamic model; for eight unknown parameters, such as triaxial tire cornering stiffness, existing in a state equation matrix, offline identification is carried out by initially adopting a genetic algorithm, and then online estimation is carried out by introducing a least square method with a forgetting factor. And finally, taking a parameter estimation result obtained by genetic algorithm offline identification as an initial value, further introducing a recursive least squares (RLS) algorithm with a forgetting factor for secondary identification, and realizing fusion of genetic algorithm offline estimation and a recursive least squares online estimation algorithm, so as to identify the obtained stable structure parameter.

A semitrailer (110) is configured to be towed by a tractor (105) and comprises an electric drive motor (205) for providing a drive torque. A method (300) for controlling such an electric drive motor (205) comprises determining a tractive force acting on the semitrailer (110), a travel speed of the semitrailer (110), and an incline of a ground surface (140) of the semitrailer (110). Based on the tractive force, the incline, and the travel speed, it is determined that the semitrailer (110) is to be started uphill, and the drive motor (205) is controlled to assist the start by providing a drive torque.

The invention provides a large semi-trailer reversing auxiliary method, device and equipment, and the method comprises the steps: obtaining the geometric center information of a ground marking line of a garage and the contour data of the ground marking line of the garage in real time through monocular image collection equipment; laser ranging data are obtained in real time through a laser ranging sensor; determining a first relative position relation of the vehicle relative to the garage according to the garage ground marking line contour data and the garage ground marking line geometric center information; determining a second relative position relation between the vehicle and the garage according to the laser ranging data; performing data fusion processing on the first relative position relation and the second relative position relation to obtain a target relative position between the vehicle and the garage; and performing auxiliary reversing according to the target relative position.

The utility model discloses a position-changing turning-over machine for semitrailer frame machining, which comprises a position-changing turning-over machine base, a turning-over machine driving main body is rotatably mounted at the top of the position-changing turning-over machine base, fixing plates are fixed on two sides of the turning-over machine driving main body, sliding adjusting plates are slidably mounted on the inner sides of the fixing plates, and the sliding adjusting plates are rotatably mounted on the top of the position-changing turning-over machine base. A plurality of linearly-arranged supporting balls are embedded in the upper surface of the sliding adjusting plate in a rolling mode, a rotary positioning groove is formed in the bottom of one end of the sliding adjusting plate, a rotary connecting block is rotationally connected to the inner side of the rotary positioning groove in a clamped mode, and a rotary supporting rod is fixed to one end of the rotary connecting block. When the semitrailer frame is loaded, the semitrailer frame is supported at the loading port of the displacement turnover machine, and the semitrailer frame can be pushed into the displacement turnover machine in a sliding manner, so that workers are assisted in loading, the operation difficulty during loading is reduced, the safety risk during operation is reduced, and the personal safety of the workers is ensured.

The invention discloses adjustable welding equipment for semitrailer chassis supporting legs, and relates to the technical field of welding equipment. The adjustable welding equipment for the semitrailer chassis supporting legs comprises synchronous distance adjusting devices, the synchronous distance adjusting devices are used for guiding the downward moving direction of leg bodies and limiting the positions of the longitudinal axes of the leg bodies, and the bottom end of each synchronous distance adjusting device abuts against a material containing pressurizing device; the material placing and pressurizing device is used for limiting the downward moving height of the leg body and clamping the leg body, and the centering clamp is used for fixing the connecting plate and enabling the longitudinal symmetry plane of the connecting plate and the longitudinal symmetry plane of the first middle position plate to be located on the same plane. According to the adjustable welding equipment for the semitrailer chassis supporting leg, the centering clamp and the synchronous distance adjusting device are matched and fix the leg body and the connecting plate correspondingly, the maximum clamping force of the synchronous clamping plate is limited through the material placing and pressurizing device, the leg body is fastened, the welding seam position precision is high, materials are changed in a wheel-to-wheel mode, and the welding work efficiency is improved.

The invention provides a transport semitrailer safety warning system. The transport semitrailer safety warning system comprises a hinge angle detection module, a vehicle speed detection module, a steering angle detection module, a processing control module and a warning module. The hinge angle detection module is used for obtaining the hinge angle between the tractor and the semitrailer, the vehicle speed detection module is used for obtaining the vehicle speed of the tractor, and the steering angle detection module is used for obtaining the steering angle of the tractor. And the processing control module is used for processing the data and controlling the warning module. The warning module comprises a projection module, an orientation angle adjusting module and a sound production module which are respectively arranged on the orientation angle adjusting module and are in communication connection with the processing control module. When the tractor steers, the system reminds surrounding traffic participants to leave a dangerous area by projecting a warning image to the ground of the dangerous area and making a warning sound, so that traffic accidents are avoided. The system effectively enhances the safety of the semitrailer in the transportation process.

The present application relates to a kind of load carrying carriage for freight semi-trailer, comprising: load carrying carriage body, including load carrying base, and front side plate, side fender and carriage door body;Multi-functional unloading assembly, including a plurality of unloading pipes connected in correspondence with interval and fixed to the both sides of the load carrying base, the load carrying base is respectively recessed with first embedded platform in the position corresponding to unloading pipe, the upper side of first embedded platform is detachably installed with corresponding link ring plate, the bottom side of link ring plate is respectively provided with corresponding second embedded platform upward, the bottom side of second embedded platform is respectively fixed with corresponding closed support plate;The support column is fixed to the bottom of closed support plate downward, the bottom of support column is respectively fixed with integral support plate connected to the bottom of unloading pipe.The present application can effectively carry weight according to demand, so as to effectively adapt to higher goods loading height, and can quickly and conveniently unload bulk cargo according to demand.

The application discloses a kind of automatic variable position tool for making semitrailer, it is related to the field of manufacturing production tool, including two mobile devices, two pairs of ground rails, frame body and installation unit, two the mobile device is respectively arranged on two pairs of ground rails and is used to move transport frame body, the installation unit is installed between two pairs of ground rails, variable position mechanism is installed on each the mobile device for frame body is positioned and turned over, a plurality of supporting frames are also provided between two pairs of the ground rail for placing frame body before supporting and positioning and turning over, the present application adopts mobile device, variable position mechanism and clamping unit, and a series of actions such as automatic clamping, lifting, turning, placing and the like are realized on frame, manual contact is reduced, production safety is improved, and after turning, frame can be accurately placed on the installation table of next process, so that production rhythm is improved, quality and efficiency are improved.

The invention relates to the technical field of semitrailer transportation, in particular to a mould-proof ventilation structure for a van type transportation semitrailer, which comprises a carriage frame body, an electric door is arranged on the left side of the front end of the carriage frame body, a fixed door is arranged on the right side of the front end of the carriage frame body, and a back door is arranged on the right side of the carriage frame body. A first plate is slidably connected to the top of the inner wall of the carriage frame and is driven by an air cylinder, the front end of the first plate penetrates through the front end of the carriage frame and is fixedly connected with a movable door, and a partition plate is fixedly connected to the bottom of the first plate; the compartment mechanism can achieve zoning of the inner space, the ventilation mechanism forms a ventilation area, meanwhile, goods loading and unloading are facilitated through the structure, automatic opening and closing are achieved through an air cylinder, a first ventilation fan and a second ventilation fan operate at the same time for ventilation, adjustment is achieved through an adjusting partition plate, and the first ventilation fan and the second ventilation fan are driven by driving wind power. And when the rotating force of the rotating fan is increased, the ventilation effect is better.

The utility model relates to the technical field of semitrailer tire burst safety protection, and discloses a semitrailer tire burst emergency locking safety protection device which comprises a hub body and a spoke, a first supporting ring is arranged on the upper portion of the center of the outer side of the hub body, and a second supporting ring is arranged on the lower portion of the center of the outer side of the hub body. A connecting adjusting device is arranged at the other end of the first supporting ring and comprises two square grooves, arc-shaped screw rods are arranged between one end of the first supporting ring and one end of the second supporting ring and close to the front portion and the rear portion, and the two ends of the two arc-shaped screw rods penetrate through the two square grooves correspondingly to the inner walls of the two square grooves; and the outer sides of the two end parts of the two arc-shaped screw rods are in threaded connection with locking nuts in a sleeving manner. According to the hub main body adjusting device, a worker can adjust the locking nut to adjust and adapt to the hub main body according to different sizes of the hub main body through the connecting adjusting device, so that the universality and the adaptability of the device are improved.