42results about How to "Guaranteed driving speed" patented technology

A multifunctional striding type mower comprises a mower frame, a steering system, a braking system, a front suspension frame used for supporting front wheels, a rear axle used for supporting rear wheels and a seat supporting frame mounted on the mower frame, wherein the steering system and the braking system are mounted on the mower frame. A generator set is arranged on the mower frame below the seat supporting frame and electrically connected with a generator control panel. A mode changeover switch and a power output interface are arranged on the generator control panel. A travel driving motor is mounted on the rear axle used for supporting the rear wheels. An electric mowing cutter disc is arranged below the mower frame, is connected with a cutter disc lifting system which is arranged on the mower frame, and is hung below the mower frame. A mowing driving motor is mounted on the electric mowing cutter disc. A travel driving motor controller, a mowing driving motor controller and the generator set are all controlled by an electrical control system. The multifunctional striding type mower integrates multiple functions including power generation, mowing, carrying and traveling, and is low in cost.

The invention discloses an adjustable three-dimensional detection system for tunnel diseases. The adjustable three-dimensional detection system comprises a junction tunnel apparent disease acquisitiondevice, a mechanical body structure and a data storage and processing device. The tunnel apparent disease acquisition device is composed of a structured light laser collection system and an image collection system and completes depth information acquisition of tunnel apparent diseases and two-dimensional plane information acquisition of the tunnel apparent diseases. The mechanical body structureis used for realizing a mechanical motion function of the detection system; and the data storage and processing device performs preprocessing, splicing, fusion and other processing on the acquired images and outputs the processed images. Three-dimensional detection of the tunnel apparent diseases is realized by adopting a structured light and camera fusion mode, and the problem that the existing tunnel apparent diseases cannot reflect the disease depth is solved through signal processing technologies such as image preprocessing, image splicing correction and multi-source data fusion.

The invention discloses a high-frequency multiple high voltage pulse generating method, a high-frequency multiple high voltage pulse power supply and an electric precipitator. According to the description, a master control unit controls high-frequency pulse power supply units needing to work at a certain moment to simultaneously generate direct-current high-voltage pulses according to setting; in work, the master control unit controls the high-frequency pulse power supply units needing to work at a certain moment to simultaneously generate the direct-current high-voltage pulses according to setting, and the direct-current high-voltage pulses are superposed at a total output end to form multiple high voltage pulses. The high-frequency multiple high voltage pulse power supply integrates various power supply modes, and direct-current power supply, intermittent pulse power supply and direct-current superposed-pulse power supply can be achieved. Pulse voltages are superposed on the basis of an effective direct-current corona voltage, step pulse supply is achieved, and the pulse leading edge time is short. High-ratio resistance dust can be effectively collected, back corona can be inhibited, the collecting efficiency of fine dust (PM2.5) can be improved, and the high-frequency multiple high voltage pulse power supply is a new-generation power supply of the electric precipitator.

The invention discloses an online detection device for abrasion to a disc cutter of a hard rock tunnel boring machine. The online detection device comprises a cutter shaft, a cutter ring, a thickness detection sensor, a signal processing integrator, a support frame, a signal output device, a wireless transmitting device and a wireless receiving device. The thickness detection sensor, the signal processing integrator, the support frame and the signal output device are sequentially arranged in the cutter ring and a cutter body from outside to inside in the radial direction. The signal output device is composed of an electric brush and a slide groove, wherein the slide groove is composed of three sections of contact arcs and three sections of connecting arcs, the central angle of each contact arc is 100 degrees, and the central angle of each connecting arc is 20 degrees. One end of a data line groove in the cutter shaft leads to the slide groove, and the other end of the data line groove in the cutter shaft leads to the portion, outside an end face of the cutter shaft, of the wireless transmitting device. The wireless transmitting device is arranged on a cutter head, the wireless receiving device is arranged on a front shield of the tunnel boring machine, and the wireless receiving device is connected to a TBM main control room through a data line. The online detection device can detect the abrasion to the disc cutter on line and can also judge whether plane abrasion occurs to a working tool or not, and the downtime can be shortened.

The invention provides a universal folding type automatic driving small vehicle. An intelligent terminal is arranged at the bottom of a small vehicle base, and a base extending plate is installed at one side of the small vehicle base in an inserting mode, wheel shafts are arranged at the other side of the small vehicle base and the lower portion of the movable end of the outer side of the base extending plate, driving wheels are arranged at the two ends of each wheel shaft, a first camera position adjusting rod and a second camera position adjusting rod are arranged at the outer side of the other side of the small vehicle base, the other end of the second camera position adjusting rod is fixed to the outer side of the small vehicle base, the upper end of the first camera position adjusting rod is connected with a probing camera, a rear side plate is arranged at the upper portion of the other side of the small vehicle base, a front side plate is arranged at the movable end of the outer side of the base extending plate, and side plate extending plates are installed at the upper ends of the rear side plate and the front side plate in an inserting mode. By designing a folding type automatic driving small vehicle, when not in use, the small vehicle can be automatically folded and deformed and therefore is convenient to carry and place, and when in use, the small vehicle is deformed and stretched and can be automatically driven; the universal folding type automatic driving small vehicle is particularly suitable for transporting and carrying plate type parts and can be used for transporting plates and transporting military supplies.

The invention discloses a power matching control method and system of a hybrid power bulldozer. The disclosed method comprises the following steps: 11) storing a relational expression between the rotating speed of an output shaft of a motor and the theoretical running speed of a track in advance; 12) detecting the rotating speed of the output shaft of the motor and the actual running speed of the track in real time, and obtaining the theoretical running speed of the track according to the rotating speed of the output shaft of the motor and the pre-stored relational expression; 13) comparing the theoretical running speed with the actual running speed of the track, and when the theoretical running speed is higher than the actual running speed of the track, increasing the locomotor activity of the bulldozer. According to the control method and system, timely judgment can be carried out according to the running speed of the track when the bulldozer slips or stops due to overload, and the driving ability of the bulldozer can be correspondingly adjusted, so that the power of the bulldozer is matched with the requirement of the driving speed; and the overload slippery phenomenon disappears rapidly, thereby keeping the driving speed of the bulldozer and guaranteeing the work efficiency.

The invention discloses an intelligent security system of a school bus. The intelligent security system of the school bus comprises an information storage unit, an authentication unit, a door lock unit, an information acquisition unit, a display unit and a control unit. The control unit performs matching on received user identity information sent by the authentication unit and identity information of a security user stored in the information storage unit, and controls the motion of the door lock unit according to the matching result; the control unit obtains the current running route of the school bus through a route acquisition unit and performs a comparison on the running route and a predetermined route, when the comparison result shows that the school bus deviates from the predetermined route, the control unit obtains the acquisition result of the information acquisition unit, and performs matching with the identity information of the security user stored in the information storage unit, and if the matching fails, the control unit sends a message that the identity information of the driver of the school bus is abnormal and shares the identity information acquired by the information acquisition unit to a network cloud for storage through the network.

The invention discloses a safety intelligent driving assistant system for heavy commercial vehicles. The system comprises a power supply; the output end of the power supply is unidirectionally and electrically connected with a network cloud system; and the output end of the network cloud system is bidirectionally and electrically connected with a power system. Through the arrangement of the powersupply, the network cloud system, the power system, a control module, a driving record system, a rescue system, a speed control system, a radar detection system and a backing rear-view system, the vehicle safety intelligent driving assistant system has the advantages of real-time road condition information monitoring, safety driving and quick alarming, a driver can drive safely, the driving speedis ensured to be in a safety intelligent driving assistant system, the driver can acquire real-time road condition information, an alarm is given quickly after an accident, and besides, the problems that the existing vehicle safety intelligent driving assistant system can not monitor the road condition information in real time, can not perform speed limit on different road sections and has a slowalarming speed can be solved.

The invention discloses a structure-variable safety boat which comprises a river boat body, a sea boat bottom and an auxiliary cabin part. The river boat body comprises a bow structure and a cabin structure; the bow structure is arranged into a round tip structure and is arranged at the head of the cabin structure, and the bow structure and the cabin structure are integrally formed; the cabin structure comprises a cabin tank, a deck and a concave bottom, the deck is arranged at the upper end of the cabin tank and is airtightly and fixedly connected with the cabin tank, and the concave bottom is arranged at the bottom of the cabin tank. The structure-variable safety boat effectively solves the problem that a river boat cannot go to the sea and a sea boat cannot go ashore; by changing the weight of the boat body, controlling the center of gravity and setting the contact area between the boat body and the water surface, real-time control over the stability of the boat body is realized inmultiple dimensions, and auxiliary stabilization of the cabin and emergency escape are also realized.

The invention provides a high-precision 3D (three-dimensional) printer which comprises a frame, transverse guide rails, longitudinal guide rails, a spray nozzle base and transverse and longitudinal driving mechanisms. The driving mechanisms comprise stepper motors and transmission belts; the spray nozzle base can slide along the transverse guide rails, and the transverse guide rails can slide along the longitudinal guide rails via transverse guide rail seats; the surfaces of the transverse guide rails are made of a resistance material, a transverse slide contact which is in contact with the surfaces of the transverse guide rails is arranged below the spray nozzle base, is serially connected with an ohmmeter and then is separately connected to two ends of each transverse guide rail, the ohmmeter is coupled with an arithmetic unit, and the arithmetic unit is coupled with stepper motor controllers; the surfaces of the longitudinal guide rails are made of resistance materials, and longitudinal slide contacts which are in contact with the surfaces of the longitudinal guide rails are arranged below the transverse guide rail seats and are electrically coupled with arithmetic units in a mode identical to that of the transverse slide contact; the arithmetic units of the longitudinal slide contacts are coupled with the stepper motor controllers. The high-precision 3D printer has the advantages that the problem of instability of belt transmission mechanisms can be solved by using the printer and the printing precision can be improved.

The invention discloses a coal roadway driving broken surrounding rock grading coordination strengthening method, and relates to the technical field of surrounding rock strengthening. The method comprises the following steps of: firstly, performing advanced pre-grouting on surrounding rocks in front of a heading head during roadway heading, and then lagging the heading head of the current roadway to perform lagging grouting on coal and rock masses near the roadway of an adjacent working face; and finally, supporting design is followed, and surrounding rock is further strengthened. According to the actual situation of the surrounding rock, the surrounding rock of the roadway is coordinated and strengthened in a time-sharing and grading mode through multiple means before and after roadway tunneling, the strength and integrity of the surrounding rock of the broken coal roadway are effectively improved, then the active supporting effectiveness of anchor rods (cables) is improved, and engineering safety is guaranteed.

The invention discloses a pure electric vehicle cruise control system and method based on a CAN controller. The pure electric vehicle cruise control system comprises a multifunctional steering wheel, the CAN controller, a whole vehicle controller, a driving assembly, an accelerator pedal and a brake pedal. The multifunctional steering wheel is used for converting key signals of cruise enabling, cruise exiting, cruise+ and cruise- into resistance signals; the CAN controller is used for converting the resistance signal into a CAN signal and generating a cruise command; the vehicle control unit is used for recognizing the cruise command and judging the opening degree of an accelerator pedal and the opening degree of a brake pedal; converting the cruise command into a target signal by combining the opening degree of an accelerator pedal and the opening degree of a brake pedal; the driving assembly is used for identifying the target signal and realizing cruise control of the whole vehicle; according to the cruise control method and device, on the basis that cruise control is achieved based on the CAN controller and the problem of pure electric vehicle type cruise control is solved, the accelerator pedal requirement is rapidly responded in the cruise process, and rapid overtaking and rapid cruise recovery are achieved.

The invention relates to a spherical tooth track running structure and a tracked micro-electric vehicle, and belongs to the technical field of transmission. The spherical tooth rail running structure comprises a rail, a concave tooth driving gear, a guide assembly and a rail locking assembly. A guide rail arranged in the length direction of the rail and a plurality of spherical teeth arranged at equal intervals are arranged on the rail; concave teeth matched with the spherical teeth are arranged on the concave tooth driving gear; the concave tooth driving gear is rotationally connected to the guide assembly, one end of the guide assembly is connected with the guide rail, the concave tooth driving gear is kept to rotate in the laying direction of the spherical teeth through cooperation of the guide assembly and the guide rail, and when the concave tooth driving gear rotates, the spherical teeth are meshed with the concave teeth; and one end of the rail locking assembly is connected with the guide assembly, and the other end of the rail locking assembly is slidably connected with the side edge of the rail. The spherical tooth track driving structure is driven by the spherical teeth for transmission and can adapt to most complex terrains, dragging force is guaranteed, and the tracked micro-electric vehicle can continuously go uphill or downhill.

An overpass at an urban road intersection comprises overpass surfaces and roads which are crossed in four directions. Roads connected with the overpass surface in each direction are at least six lanes; the inner side, facing the center, of the overpass surface in each direction is provided with an inner side ramp bridge, and the outer side of the overpass surface is provided with an arc-shaped curve bridge; the overpass surface in each direction further comprises an outer side ramp bridge located on the leftmost side and a guide lane bridge located on the right side; at least three lanes of the guide lane bridge are a straight lane, a left turning lane and a right turning lane in sequence from left to right; and a U-shaped curve bridge is arranged between the straight lane of the guide lane of the overpass surface in each direction and the outer side ramp bridge, so that straight vehicles can reach the outer side ramp bridge of the road on the same side through the U-shaped curve bridge to turn around. According to the invention, traffic lights are unobstructed in all directions, people and vehicles are shunted, hidden dangers of traffic accidents of people and vehicles are eliminated, and major traffic accidents are effectively prevented.

The invention belongs to the field of roadway supporting methods, and particularly relates to an optimized supporting method for an empty roof area of a tunneling roadway. Comprising the following steps. The method comprises the following steps: S1, acquiring geometric parameters of a dug roadway and mechanical experiment parameters of a coal rock body; s2, selecting five groups of different lengths L1, L2, L3, L4 and L5 of the empty top area; s3, constructing a numerical calculation model in equal proportion, and simulating the deformation of a top plate when a roadway is tunneled for a certain length and then is supported and the length of an empty roof area is excavated; s4, designing an initial supporting scheme of the roof in the empty roof area; s5, an initial supporting scheme is applied to the roadway roof, and after the length of the next empty roof area is excavated in the roadway through simulation analysis, the deformation value d of the roof of the previous empty roof area after supporting is calculated through simulation; s6, if the further deformation value d is smaller than or equal to 10 mm and S is smaller than or equal to 50 mm after the roof of the empty roof area is supported, the supporting scheme is reasonable; if the further deformation value d of the roof in the empty roof area after supporting is larger than 10 mm, it is unreasonable, the initial supporting scheme is improved, the further deformation value d is simulated till the further deformation value d is smaller than or equal to 10 mm and S is smaller than or equal to 50 mm, and the supporting scheme is determined.

The invention relates to the technical field of train cleaning, in particular to a train cleaning device which comprises a bridge body, a cleaning mechanism is fixedly connected to the upper end of the bridge body, and the cleaning mechanism comprises a water tank, water pipes, a spray head, a baffle, a through hole, a fixing frame, a first spring, a square groove, a connecting plate, a cleaning brush, a movable groove and a movable plate. The water tank is fixedly connected on the upper end of the bridge body, and the water pipes are fixedly installed on the two sides of the water tank. By arranging the cleaning mechanism, the train does not need to be cleaned after being stopped and manual cleaning is not needed, the use efficiency of the train is guaranteed, the workload of workers is reduced, the cleanliness of the outer surface of the train can be guaranteed, sewage is prevented from directly dropping on the ground, injury to passers-by walking on the ground can be avoided and affecting the appearance of the city can also be avoided. The guide wheels can be automatically cleaned in the running process of the train under cooperation of the water spraying mechanism, and dust attached to the guide wheels is washed away.

The invention discloses an anti-scour method for coal roadway tunneling head-on anchor cable support. The anti-scour method comprises the following steps that firstly, reasonable head-on reinforced anchor cable construction parameters are determined according to factors such as coal roadway geological conditions and single-day tunneling footage by utilizing an anchor cable support technology in coal mine roadway surrounding rock control; before tunneling is started, the number and construction positions of anchor cables needing to be reinforced are determined according to the roadway section size and working conditions; the first round of reinforcing anchor cables of one group is starting to constructed, the first round of reinforcing anchor cables of the other groups are constructed at the current head-on position after one single-day tunneling footage operation is completed, tunneling operation is continued to operated, the process is repeated at the current head-on position to construct the next group of reinforcing anchor cables after the tunneling operation is completed, and so on; and 2-3 reinforcing anchor cables are always arranged in the head-on coal wall in front of the tunneling working face. According to the method, the head-on impact resistance of the tunneled roadway can be guaranteed only through anchor cable supporting, and meanwhile the tunnelling speed can beguaranteed; and in addition, disturbance to the head-on coal wall is small in the construction process, and construction safety can be guaranteed.