49results about How to "Improve driving ability" patented technology

The invention discloses a driving and protecting circuit of an IGBT (Insulated Gate Bipolar Translator) module, and belongs to the technical field of engineering. The circuit comprises an optocoupler driving chip U1 which is used for receiving and isolating an external driving signal; the push-pull circuit is connected with the output end of the optocoupler driving chip U1 and is used for driving the grid electrode of an IGBT (Insulated Gate Bipolar Translator); and the protection circuit module is respectively connected with the optocoupler driving chip U1, the push-pull circuit and the IGBT, and is used for realizing overvoltage and desaturation detection, Miller clamping and soft turn-off functions. Compared with a traditional driving circuit, the driving circuit has the advantages of being stable in positive and negative voltage, high in driving capacity, multiple in protection function and the like, and reliability and stability of IGBT module driving are guaranteed.

This utility model discloses a round bar heating furnace, specifically relating to the field of bar heating furnace technology. It includes a furnace body with multiple electromagnetic coils in the middle. Support rollers and pressure rollers are respectively installed at the upper and lower ends of the electromagnetic coils. A lifting frame is installed at the top of the furnace body's inner cavity. Multiple stabilizing rods and connecting rods are fixedly connected to the top of the lifting frame. The top of the connecting rods extends to the top of the furnace body and is fixedly connected to a connecting frame. This utility model firstly uses fixed blocks and limiting grooves to directly limit the bar material during manual feeding. By activating an electric push rod, the lifting frame moves the pressure rollers downwards to directly squeeze and clamp the bar material located at the bottom of the support rollers, thus limiting the bar material's position. By activating a motor to sequentially control the rotation of the support rollers, stable conveying of the bar material can be achieved through their cooperation with the pressure rollers. During conveying, heating is provided by the electromagnetic coils, resulting in a heated conveying effect.

The invention aims to provide the communication line enhanced driving circuit, the circuit is simple, the cost is low, strong and constant driving current is provided, signal attenuation in long-distance communication can be effectively compensated, flexible switching of peripherals is supported, and the communication line driving capability is improved. The circuit comprises a dual-channel PNP-type triode, the dual-channel PNP-type triode comprises a first triode and a second triode, an emitter of the first triode and an emitter of the second triode are jointly connected to a VCC, a base of the first triode is connected with a collector of the first triode and is grounded through a resistor, and a base of the second triode is connected with a collector of the second triode. The base electrode of the second triode is connected with the base electrode of the first triode, and the collector electrode of the second triode serves as output to be connected with a load. The invention is applied to the technical field of communication systems.

This utility model discloses a piezoelectric ceramic air pump drive circuit, belonging to the technical field of piezoelectric ceramic air pump control. The circuit includes a main control processing unit, a program download unit, a low-dropout voltage regulator unit, an H-bridge piezoelectric ceramic air pump drive unit, and a DC-DC boost unit. The input terminals of the low-dropout voltage regulator unit and the DC-DC boost unit are connected to an external power supply, providing a stable low-voltage operating power supply to the main control processing unit and a high-voltage power supply to the H-bridge piezoelectric ceramic air pump drive unit. The H-bridge piezoelectric ceramic air pump drive unit uses complementary metal-oxide-semiconductor field-effect transistors to construct a full-bridge topology. The main control processing unit outputs complementary pulse width modulation signals to control the switching of the transistors in the H-bridge, generating a high-voltage alternating drive signal at the interface connecting to the air pump. This utility model features high integration, flexible control, and high drive efficiency, making it suitable for piezoelectric ceramic air pump applications requiring high-voltage, high-frequency drive.

The utility model provides an IGBT driving circuit based on a push-pull structure, and relates to the technical field of power electronic device driving, and the IGBT driving circuit comprises an optocoupler isolation module which is used for receiving a control signal and providing electrical isolation output; the push-pull driving module comprises an NPN type triode Q1 and a PNP type triode Q2 which are complementary and symmetrical; the push-pull driving module is configured as follows: when the optocoupler is conducted, Q1 is saturated and conducted, Q2 is cut off, and a driving current charges an IGBT grid electrode through R2; when the optocoupler is turned off, the Q2 is saturated and turned on, the Q1 is turned off, and the driving current flows through the R3 to discharge the grid electrode of the IGBT. Bidirectional driving current is provided through a push-pull structure, the charge charging and discharging speed of the IGBT grid electrode is increased, the switching loss is reduced, bidirectional driving current is provided through a switch-on resistor R2 and a switch-off resistor R3, the resistance value of the switch-on resistor R2 is selected to be small, the purpose of reducing switch-on loss Eon is achieved, the resistance value of the switch-off resistor R3 is selected to be large, and the purpose of reducing switch-off Vce is achieved.

The invention discloses a joint flexible driving device, a driving method and application, and belongs to the technical field of joint drive.The joint flexible driving device comprises a driving plate used for being connected with an air bag or a to-be-driven joint; the air bag and the driving plate are alternately connected in series to form a flexible driving mechanism, and the flexible driving mechanism is used for inflating or inhaling deformation to drive the to-be-driven joint; the at least one air bag is inflated and deflated at the same time, and the air bag deforms softly through differential control of inflation and suction; the air bags and the driving plates are alternately connected in series to form the flexible driving chain of the multi-stage air bags; therefore, the force transmission efficiency of the flexible part during large-angle circumferential driving is greatly improved, and the effective angle range of flexible part driving is remarkably expanded; according to the flexible joint driving device, through differential inflation and air suction control of the air bag, the air bag deforms flexibly in the driving process, the whole flexible joint driving device is flexible and transmits flexible driving force, and precision and flexibility of joint driving are facilitated.

The invention relates to the technical field of electronic information, and discloses a reference following anti-interference bidirectional current sampling method and system, and the method comprises the steps: carrying out the driving characteristic enhancement processing of a reference voltage signal, and obtaining an enhanced reference voltage signal; performing common-mode interference suppression processing on the original differential voltage signal to obtain a net differential voltage signal; performing linear amplitude adjustment on the net differential voltage signal to obtain an amplified voltage signal; mapping the amplified voltage signal into a unipolar voltage range by taking the strengthened reference voltage signal as a reference zero point to obtain a unipolar voltage signal; performing correlation coupling on the long-term characteristics and the short-term characteristics to obtain correction parameters, and performing signal reconstruction on the unipolar voltage signals based on the correction parameters to obtain optimized unipolar voltage signals; performing synchronous decoding on the optimized unipolar voltage signal based on the enhanced reference voltage signal to obtain an instantaneous current value and a flowing direction; according to the invention, the precision of bidirectional current sampling can be improved.

The invention discloses a low-dropout linear voltage stabilizing circuit, which is characterized by comprising an error amplifier, a frequency compensation circuit, a feedback loop and a power device, the output of the error amplifier is cascaded with the power device to form a circuit main loop; the feedback loop is used for providing a feedback signal reflecting the change of the output voltage of the power device, and the frequency compensation circuit adopts a power tube structure with a pseudo ESR resistor to realize frequency compensation of a main loop of the circuit together with the feedback loop; the error amplifier adopts two-stage circuits, one end of the first-stage circuit is connected with a reference signal, the other end of the first-stage circuit is connected with a feedback signal of the feedback loop, and the two signals are compared and input to the second-stage circuit in a current form; and the second-stage circuit adopts a feedforward coupled AB output stage structure, so that rail-to-rail output of the output voltage is realized, the magnitude of the current provided by the power device to the outside is controlled, and the output voltage is stable.

This invention discloses a semiconductor device and its manufacturing method, relating to the field of semiconductor technology, for reducing parasitic capacitance between adjacent memory contacts and improving the driving capability of the semiconductor device. The semiconductor device includes: a substrate, bit line structures, memory contacts, and an isolation portion. The substrate has an active region. The bit line structures are formed on the substrate and contact a portion of the active region. The memory contacts and the isolation portion are formed between two adjacent bit line structures. The memory contacts contact another portion of the active region. The isolation portion isolates two adjacent memory contacts. The material contained in the isolation portion includes a low-k material. The manufacturing method of the semiconductor device is used to manufacture the semiconductor device provided by the above-described technical solution.

This invention discloses a dynamic random access memory (DRAM) and its manufacturing method, relating to the field of memory technology, to reduce the parasitic capacitance of memory cells. The DRAM includes a substrate and a plurality of memory cells. Each memory cell includes a first transistor and a second transistor disposed along the thickness direction of the substrate, with the second transistor located on the first transistor. The first transistor includes a first stacked structure, a first channel layer, a first gate dielectric layer, and a first gate. The first channel layer covers a second isolation layer and the inner wall of a first opening, the first gate dielectric layer is located on the first channel layer, and the first gate is located within a first via formed by the first gate dielectric layer. The second transistor includes a second stacked structure, a second channel layer, a second gate dielectric layer, and a second gate. The second channel layer covers a third conductive layer and the inner wall of a second opening, the second gate dielectric layer is located on the second channel layer, and the second gate is located at least within a second via formed by the second gate dielectric layer.

The present application belongs to the technical field of unmanned aerial vehicle carrying water hose to ascend and extinguish fire with landing gear, and particularly relates to a transition special structure for connecting the unmanned aerial vehicle dragging water hose with the end pipeline of the machine body; a transition structure combining traditional fire fighting and precise spraying and cleaning is designed, a servo mechanism connecting the end pipeline of the machine body is ensured to enable the tethered unmanned aerial vehicle to drag water hose to ascend and to connect the end pipeline of the machine body, the mechanism driving the spray gun to pitch is realized by the servo mechanism connecting the end pipeline of the machine body, the spray gun is realized to spray while aiming, and the effect of precise spraying and cleaning is achieved.

The application relates to the technical field of motor control, and discloses a variable-frequency variable-voltage permanent magnet synchronous motor control method, which comprises the following steps: first step: establishing a model of a hidden-pole permanent magnet synchronous motor and an IGBT loss model based on an output period, and establishing the relationship between the two; second step: taking the quality of inverter output current as a constraint condition, and taking the switching frequency of the inverter and the DC bus voltage as constraint variables to establish an optimization target; third step: applying an optimization method to obtain the switching frequency and the DC bus voltage with the lowest IGBT loss based on the output period. The variable-frequency variable-voltage permanent magnet synchronous motor control method optimizes the DC bus voltage and the switching frequency of the motor, can reduce the IGBT loss to the maximum extent, thereby obviously reducing the junction temperature of the IGBT and prolonging the service life of the IGBT.

The invention discloses a control circuit and a control method of a power switch tube, and a switching power supply, and belongs to the technical field of switching power supplies. The control circuit of the power switch tube comprises a first P-type MOS tube, the source electrode of which is connected with a power supply voltage node and the drain electrode of which is connected with the driving end of the power switch tube; the drain electrode of the first N-type MOS tube is connected with a power supply voltage node, and the source electrode of the first N-type MOS tube is connected with the driving end of the power switch tube; the driving circuit is connected with the grid electrode of the first P-type MOS tube and the grid electrode of the first N-type MOS tube, drives the first P-type MOS tube to be conducted when the control signal of the power switch tube is a conduction signal and the power supply voltage of the power supply voltage node is smaller than the reference voltage, and drives the first N-type MOS tube to be conducted when the control signal of the power switch tube is a conduction signal and the power supply voltage is larger than or equal to the reference voltage. And the first N-type MOS tube is driven to be conducted, so that the voltage loss caused by the threshold loss of the power tube is reduced, and the driving capability of the driving circuit when the power supply voltage is relatively low is improved.

The application provides an embedded flash memory structure and a manufacturing method thereof. The gate stack layer comprises a tunneling oxide layer, a floating gate layer, a gate dielectric layer and a control gate layer which are stacked in sequence. The floating gate layer comprises a plurality of mutually electrically isolated nano storage points. During programming, charges can be stored in the plurality of mutually electrically isolated nano storage points. When breakdown occurs in any nano storage point, the remaining undamaged nano storage points can still normally store charges due to the electric isolation between the nano storage points, so that the floating gate layer can maintain normal storage function, thereby improving the overall stability of the memory and increasing the service life of the memory. The application has six kinds of embedded flash memory cell structures. In particular, the tunneling oxide layer and the floating gate layer are arranged to protrude from both sides of the gate dielectric layer and the control gate layer, thereby greatly improving the programming speed of the embedded flash memory.

The invention discloses a gain compensation circuit and a chip, and belongs to the technical field of gain compensation. The gain compensation circuit comprises a voltage conversion circuit used for outputting a control voltage signal; the reverse amplification circuit is used for carrying out reverse amplification on the control voltage signal; the reverse amplification circuit not only can adjust the amplitude of the control voltage, but also realizes signal polarity inversion so as to match the control end input requirement of a subsequent image amplifier, and the design avoids an additional level shift circuit, simplifies the system architecture and improves the driving capability; the differential amplification filter circuit is used for filtering the reversely amplified control voltage signal to obtain a differential signal; the differential signal is used for performing gain adjustment on the image signal; the differential amplification filter circuit can effectively filter high-frequency quantization noise, clock feed-through and power supply coupling interference in the output of the voltage conversion circuit, the output of the differential amplification filter circuit is a differential signal, and compared with a single-ended signal, the differential amplification filter circuit has higher common-mode noise suppression capability.

The utility model relates to a kind of shutdown control device applied to driving assistance system, including steering switch module, power switch module, and gate, second voltage comparator, first voltage comparator, torsion sensor and brake pedal position sensor;The utility model utilizes torsion sensor to detect the torsion of steering wheel, brake pedal position sensor detects the position of brake pedal, when the voltage output by torsion sensor and / or brake pedal position sensor exceeds certain threshold, then it is artificial operation steering wheel or artificial treading brake, first voltage comparator and / or second voltage comparator output low level, then steering switch module and power switch module are all cut off, the intelligent driving controller of vehicle driving assistance system cannot send control signal to the steering controller and power controller of vehicle, the function of closing auxiliary driving is realized, and the auxiliary driving function of vehicle can be released using steering wheel or brake pedal.

The application provides a ramp signal compensation circuit and an image sensor, the ramp signal compensation circuit comprising: a source follower module outputting a follow-up signal of the reference ramp voltage; a current mirror module copying a mirror current of the driving current to the current convergence point; a sampling compensation module sampling the power supply voltage to obtain a sampling signal and outputting a bias current corresponding to the sampling signal to the current convergence point; and a constant current module providing a constant current signal and converging the driving current and the bias current through the current convergence point, so that the driving current and the bias current are linearly correlated based on the constant current signal. The application linearly correlates the driving current and the bias current based on the constant current, enhances the driving capability of the reference ramp voltage signal, introduces the same power supply jitter into the input end of the comparator, reduces the influence of the power supply voltage on the quantization result, and realizes the stable output of the column-level comparator.

The embodiment of the present disclosure relates to the field of semiconductor, and provides a magnetic memory structure and a memory, which comprises: a plurality of stacked magnetic storage units, and the magnetic storage unit at least comprises: a first transistor, the first transistor comprises a gate, the gate is used for connecting a control line, and one terminal of a source or a drain of the first transistor is used for connecting a first signal line; a magnetic tunnel junction, a bottom of the magnetic tunnel junction is used for connecting the other terminal of the source or the drain in the first transistor, and a top of the magnetic tunnel junction is used for connecting a second signal line, wherein the magnetic tunnel junction extends along the stacking direction of the magnetic storage unit; and the magnetic tunnel junctions in the plurality of stacked magnetic storage units are connected to the same second signal line, so that the integration density of the magnetic memory structure is improved.

The utility model provides a kind of high-resolution and light efficiency optimization type display array substrate, by optimizing metal layer wiring, i.e., gate signal line is arranged in third metal layer and is vertically overlapped with TFT gate, reduces light shielding area;Touch signal line is moved to first metal layer, improves touch signal-to-noise ratio, and data signal line is additionally provided in first metal layer, and the data signal line of second metal layer is equipotential, forms double-layer data line driving structure design, without increasing metal layer thickness, metal line width, metal material and the like, data line impedance can be reduced to original half substantially, effectively improves IC driving capability, can support 8K resolution driving at most, breaks through the problem that S-IC driving capability is insufficient due to data line load improvement under high-resolution panel dual Gate driving design.

This invention relates to a beam-column docking device for steel structure construction, comprising: a component installation docking clamp, including a set of component clamping plates welded to a steel column component; a component locking assembly, including a first temporary frame detachably installed on the outside of a component clamping plate, the first temporary frame being provided with a conduit for temporarily storing locking bolts, each conduit containing a corresponding locking bolt movably inserted, an electromagnet for attracting and fixing the locking bolts being fixed to the outer end of the first temporary frame, and a corresponding bolt pushing spring being fixed to the inner side of the electromagnet; and a component alignment correction mechanism, wherein the beam component, under the hoisting of corresponding hoisting equipment, is inserted at its end between a set of component clamping plates of the steel column component, and the component alignment correction mechanism is used to correct the position of the beam component. This invention enables rapid docking of beam-column components in steel structures and significantly improves the turnover rate of equipment used for hoisting beam components.

The embodiment of the invention provides a display control chip, a display device, a driving control method of the display device and an electronic device. The display control chip selects a correction mode according to the brightness level of the display equipment, and corrects the received first pixel voltage of any pixel unit to obtain a second pixel voltage; determining a corresponding compensation base value according to the second pixel voltage of the current frame of picture and the second pixel voltage of the previous frame of picture; compensating the first pixel voltage according to the compensation base value to obtain a third pixel voltage; and outputting the third pixel voltage to a corresponding pixel unit to drive the display of the pixel unit.

The liquid crystal phase shifter, liquid crystal phased array antenna, and driving method provided in this invention include: a plurality of liquid crystal phase shifter units, each configured to connect a data signal line to a first node in response to a first scan signal on a first scan signal line; and a first driving circuit electrically connected to the first scan signal line, configured to output a first scan signal in response to signals from a reference signal terminal and an output enable signal terminal, and to control the first scan signal to slowly switch from a first level to a second level. This allows for large-scale driving of multiple liquid crystal phase shifter units, significantly improving driving capability and reducing the difficulty of the bonding process, thereby improving the reliability and stability of bonding. Furthermore, it enhances the stability of the liquid crystal phase shifter units, preventing abnormal operation due to leakage current, thus improving the performance of the liquid crystal phase shifter.

This invention belongs to the field of stirrers, specifically relating to a magnetic levitation stirrer and stirring method. The magnetic levitation stirrer includes a container, a stirring shaft assembly, a stirring shaft positioning assembly, and a power assembly. The container includes an upper main cavity and a lower stirring shaft mounting cavity that are interconnected. The stirring shaft assembly includes an impeller and a rotating shaft that are interconnected. The impeller is disposed without contact within the main cavity, and the rotating shaft is disposed without contact within the stirring shaft mounting cavity. The stirring shaft positioning assembly includes at least two sets of axially arranged suspension bearings disposed outside the stirring shaft mounting cavity of the container, with the at least two sets of suspension bearings levitizing the rotating shaft axially and radially. The power assembly is used to drive the rotating shaft to rotate without contact. This invention truly achieves zero contact between the stirring shaft assembly and the container, and is convenient to install, has a larger capacity, and provides better stirring effect.

The application provides an adaptive biasing method and circuit of an amplifier. The mirror component detects the pull-up current Isource and the pull-down current Isink in the output stage of the main circuit of the operational amplifier, and then the comparison branch compares the mirror current with the preset current threshold Ith_sink and Ith_source respectively, and converts the difference current into a driving voltage signal. When the pull-up current is detected to be lower than the pull-down threshold, the second pull-down transistor M26 is activated to absorb the extra pull-down driving current; when the pull-down current is detected to be lower than the pull-up threshold, the second pull-up transistor M14 is activated to inject the extra pull-up driving current. The application can dynamically open the auxiliary output stage to enhance the driving capability and ensure the linearity when driving a large signal, and the auxiliary tube is completely cut off to eliminate the static power consumption when working with a small signal, and the threshold current can be flexibly configured according to the load characteristics, and the circuit has a fast response speed.

The utility model relates to a reading auxiliary circuit, a memory and electronic equipment, the reading auxiliary circuit comprises a voltage gate, the input end of the voltage gate is connected with a first driving signal, and the output end of the voltage gate is used for providing different driving voltages for a bit line and a reverse bit line connected with a sensitive amplifier; a first switching unit; the second switch unit is connected with the first switch unit; the first input end of the driver is connected with the output end of the voltage gate through a first switch unit, and the second input end of the driver is connected with the output end of the voltage gate through a second switch unit; wherein the first switch unit is used for transmitting a driving voltage on a bit line to a first input end of the driver when receiving a second driving signal; and the second switch unit is used for transmitting the driving voltage on the reverse bit line to the second input end of the driver when receiving a third driving signal. And the BL-BLB voltage difference delta V is improved through a scheme of pulling the high-bit line voltage, so that the accuracy and the stability during reading are ensured.

The embodiment of the utility model provides a pixel circuit and a display panel, relates to the technical field of display, and is used for improving the brightness uniformity of a light-emitting device. The pixel circuit comprises a driving sub-circuit and a storage sub-circuit. The driving sub-circuit comprises a first transistor, and the first transistor is a double-gate transistor. The first electrode of the first transistor is electrically connected with a first voltage end, the second electrode is electrically connected with the first electrode of the light-emitting device, and the first control electrode is electrically connected with a first light-emitting control signal end. The storage sub-circuit is electrically connected with the second control electrode and the first voltage end. The common connection end of the storage sub-circuit and the second control electrode of the first transistor is a first node. Under the condition that the target gray scale of the light-emitting device is smaller than or equal to a gray scale threshold value, the first transistor is switched between an on state and an off state under the control of a first light-emitting control signal provided by a first light-emitting control signal end and the potential of the first node. Comprising the pixel circuit is used for displaying images.

The present application relates to the technical field of constant current control of stepping motor, and particularly relates to a constant current control system and control method of stepping motor based on FPGA, comprising: an FPGA unit for generating a PWM control signal; a power amplifier circuit unit for amplifying the PWM control signal converted by a level conversion unit to drive the stepping motor; the FPGA unit is also used for generating a driving signal; a differential driving circuit unit for differentiating the driving signal converted by the level conversion unit to drive a Hall angular displacement sensor; the Hall angular displacement sensor collects rotor position information of the stepping motor, which is received by a differential receiving circuit unit, transmitted to the level conversion unit and then transmitted to the FPGA unit, and the FPGA unit reads the rotor position information of the stepping motor in real time. The present application does not need current sampling and comparison and other hardware and software function modules, reduces the complexity of the control system, and enhances the open-loop control advantage of the stepping motor.

This application discloses a detection circuit and detection method for a capacitive MEMS sensor, comprising: a reference voltage boosting module connected to the driving terminal of the capacitive MEMS sensor to provide an excitation voltage, providing a reference voltage to the driving terminal in a first stage, boosting the reference voltage to the driving terminal to a first voltage amplitude in a second stage, and switching the excitation voltage of the driving terminal from the first voltage amplitude to a predetermined low level in a third stage; a common-mode cancellation module including a signal input terminal and an excitation terminal, the signal input terminal being connected to the output terminal of the capacitive MEMS sensor, and the excitation terminal receiving an excitation signal to drive the common-mode cancellation module to reduce common-mode fluctuations in the detection signal at the output terminal; and an operational amplifier module amplifying the detection signal with reduced common-mode fluctuations to generate an output signal. This application employs staged timing control of the reference voltage boosting module to generate excitation for the capacitive MEMS sensor, effectively reducing noise in the detection circuit.

The present application relates to a kind of deep-sea mining car terrain self-adapting stable walking track device, wherein track system includes track bracket and track, the lower side of track bracket is equipped with multiple groups of track roller assembly, track roller assembly includes swingable roller bar and track roller, track is in turn around track drive wheel, track tension wheel and each track roller, track bracket is equipped with multiple groups of roller shock absorbing assembly, and the lower end of roller shock absorbing assembly is in contact with corresponding roller bar, track bracket is equipped with track main support arm, track adjusting arm, support sliding groove and adjusting sliding groove, wherein the upper end of track main support arm is fixed with mining car frame, lower end is equipped with support sliding axle in support sliding groove, the upper end of track adjusting arm is hinged with mining car frame, lower end is equipped with adjusting sliding axle in corresponding adjusting sliding groove.The present application can adapt to the change of local convex and continuous undulating terrain in deep-sea mining area, ensure the posture stability of deep-sea mining car during driving.

The application discloses a bore cleaning machine and belongs to the technical field of military auxiliary equipment. The transmission assembly comprises a driving part connected with one end of a frame body and a transmission part arranged across the frame body, and one end of the transmission part is rotationally connected with the driving part. The driving assembly comprises a driving wheel for rolling connection with a bore wall, a mounting frame and a transmission unit. The two ends of the mounting frame are respectively connected with the frame body and the driving wheel, and the mounting frame can adjust the interval between the driving wheel and the frame body. The driving wheel is rotationally connected with the transmission part through the transmission unit. The bore cleaning assembly comprises a bore cleaning brush disc for cleaning the bore wall, which is arranged at the end of the frame body far from the driving part and rotationally connected with the other end of the transmission part. The spraying assembly comprises an oil spraying disc arranged between the bore cleaning brush disc and the frame body, which is fixedly connected with the frame body, and the oil spraying disc is provided with oil spraying holes arranged opposite to the bore cleaning brush disc. The application can improve the automation degree of the bore cleaning machine and make the cleaning of the bore more thorough.