29results about How to "Uniform load" patented technology

The utility model discloses an auxiliary frame body bushing mounting hole polishing tool, and belongs to the technical field of tools. The tool comprises a rack; the workbench is used for fixing the auxiliary frame to be polished; the rotating mechanism comprises a rotating shaft fixed to the rack, a bearing arranged on the rotating shaft in a sleeving mode and a bearing seat matched with an outer ring of the bearing, the center of the workbench is fixed to the bearing seat so that the workbench can rotate around the rotating shaft, and a cam bearing of the supporting structure is used for supporting the workbench under the condition that the workbench rotates around the rotating shaft; a limiting mechanism; the left handle mechanism and the right handle mechanism are installed on the workbench, and any one of the left handle mechanism and the right handle mechanism comprises a limiting pin capable of ascending and descending, a spring for driving the limiting pin, a guide shaft and a handle; and under the condition that the workbench rotates to the position above the limiting seat, the limiting pin is clamped into the hole of the limiting seat under the action of the spring so as to lock the position of the workbench. According to the tool, through cooperation of a rotating structure, a supporting structure and a limiting structure, workpieces can be overturned without being carried.

An axial positioning structure for the main shaft gear of a multi-speed transmission, relating to the field of transmission technology, employs a helical gear axial positioning method to meet the positioning requirements of the gear's axial force. In this structure, the main shaft is supported at both ends by tapered bearings; the gear assembly includes a first gear, a second gear, a third gear, a gear sleeve, a hexagonal key, and a shaft retaining ring, all using a floating assembly configuration; the internal spline of the gear sleeve has a missing tooth structure; the spline retaining ring bears the axial force, and the hexagonal key provides circumferential restraint to the spline retaining ring, while the shaft retaining ring prevents the hexagonal key from disengaging; the third gear is restrained directly by the inner ring of the bearing via the hexagonal key.

A double-helix planetary roller helical pressing device includes a first turntable 10 and a second turntable 20. A conical roller 30 is provided between the first turntable 10 and the second turntable 20. The first turntable has a first conical helical track 11, and the second turntable has a second conical helical track 21. The conical roller has a roller annular groove 31 that meshes with the first conical helical track 11 and the second conical helical track 21. The first turntable 10 and the second turntable 20 rotate coaxially relative to each other, and the conical roller 30 rolls on the first conical helical track 11 and the second conical helical track 21. This invention uses a first turntable with a first conical helical track and a second turntable with a second conical helical track. The conical roller is provided with annular teeth, which allows the conical roller to accurately maintain its radial position, uniformly bear the pressing load, and also avoids slippage between the conical roller and the first and second turntables, improving the operating effect. A roller retainer structure with a roller carriage is used, which can better constrain the posture of the roller during movement.

The invention relates to the technical field of prefabricated T-beam transportation, in particular to efficient prefabricated T-beam transferring supporting and pulling stabilizing equipment which comprises a base, a supporting mechanism, a jacking mechanism and a monitoring mechanism. The base is divided into four carrier plates of an equal structure in a cross mode, and the adjacent carrier plates can move relatively. The supporting mechanism comprises a base, a supporting seat and a hydraulic oil cylinder; a fastener is arranged on the carrier plate; the jacking mechanism comprises a mounting seat, a fixed plate, a movable seat, a second hydraulic cylinder and a jacking plate; the jacking mechanism further comprises a pressing piece. The pressing piece comprises a supporting cross beam, a third hydraulic cylinder and a pressing pad. The monitoring mechanism is used for monitoring fulcrum pressure and lateral clamping force of the prefabricated T-beam in real time and transmitting real-time monitoring data to the monitoring platform. The height of each supporting point can be accurately adjusted, clamping of preset force in the vertical direction and the horizontal direction is completed at the same time, the pressure of the supporting points and the lateral clamping force can be monitored in real time, the alarm function is provided, and the transportation efficiency and safety are greatly improved.

The application discloses a kind of concrete prefabricated component performance detection device, belong to concrete component test device field, including console, liquid supply mechanism, several detection mechanisms and oil jack, liquid supply mechanism and detection mechanism are respectively connected with console communication, several oil jacks are all set with a detection mechanism.The utility model replaces traditional mechanical jack with oil jack, and the stable delivery of oil can be realized by liquid supply mechanism and combined with the closed-loop control function of console, which not only ensures the uniform loading speed, meets the uniform speed loading required by specification, but also can ensure the stability of pressure in the holding phase;Through the cooperation of detection mechanism, liquid supply mechanism and console, accurate control of each oil jack can be realized, without repeated adjustment by staff, not only reduce the complexity of test and labor and time cost, but also ensure the uniformity of load distribution, guarantee the reliability and accuracy of test data.

The utility model belongs to the technical field of cutter disassembly and assembly, and particularly relates to a cutter locking structure which comprises a cutter and a cutter handle, and a cam tensioning mechanism is arranged between the cutter and the cutter handle. The cam tensioning mechanism comprises a lock shaft and an eccentric wheel installed on the lock shaft, an axial tensioning piece is arranged between the cutter and the cutter handle, the axial tensioning piece is movably assembled in the cutter handle, one end of the axial tensioning piece is in threaded connection with the cutter, and a tensioning hole is formed in the axial tensioning piece; or a tensioning hole is formed in the short taper shank of the cutter; the axis of the tensioning hole coincides with the central axis of the cutter handle and is perpendicular to the axis of the lock shaft. The lock shaft can rotate relative to the cutter handle, penetrates into the cutter handle and is connected with the tensioning hole in an inserted mode so that the eccentric wheel can be located in the tensioning hole, the eccentric outer side of the eccentric wheel makes contact with the hole wall of the tensioning hole, and the eccentric wheel drives the cutter to move in the axial direction of the eccentric wheel under rotation of the lock shaft so as to tension the cutter. And a locking structure is arranged between the lock shaft and the knife handle. The tool can be prevented from loosening and rotating relative to the tool handle, machining precision is guaranteed, machining efficiency is improved, and machining cost is saved.

This invention provides an integrated power flow regulation device and its control strategy, belonging to the field of power systems; it solves the problem of complex flexible DC transmission topologies; the specific control strategy is as follows: The voltage, inductor current, and DC bus voltage of grid 1 are acquired, and the dq current component is obtained through SOGI-PLL synchronization and coordinate transformation; based on the DC voltage of grid 1 and the given value of reactive power compensation, PI and ADRC control are performed, and a modulated wave U is output. ab‑ref The electrical quantities and power of the power grid are acquired, and after synchronization, coordinate transformation, and PI control, a modulated wave U is output. cb‑ref , will U ab‑ref with U cb‑ref Decoupling is performed to obtain the modulation waves of the three bridge arms, and SPWM is used to generate the pulse signal to drive the IGBT. This invention realizes the power flow regulation of two adjacent power grids through an integrated power flow regulation device, which reduces the circuit complexity of power flow regulation when the two power grids are asynchronously interconnected, and reduces the number of switching devices and operating losses.

The invention relates to a load balancing method and device, equipment and a storage medium. The method comprises the steps that under the condition that a first cell meets a preset balance condition, reselection weights corresponding to a plurality of target pilot frequency cells respectively are acquired, and the reselection weights are related to the capacity of the cells for providing services for a terminal; according to the reselection weights respectively corresponding to the plurality of target pilot frequency cells, determining reselection priorities respectively corresponding to the plurality of target pilot frequency cells; and sending the reselection priorities respectively corresponding to the plurality of target pilot frequency cells to a first terminal served by the first cell, so that the first terminal performs cell reselection according to the reselection priorities respectively corresponding to the plurality of target pilot frequency cells. By adopting the method, the load of the cell can be balanced.

The utility model discloses a heavy load dock pier suitable for large floating dock relates to shipbuilding technical field, specifically includes upper pier wood, sand box, graded sand, concrete pier and lower pier wood, wherein sand box is fixed in the top of concrete pier, and lower pier wood is fixed in the below of concrete pier, the graded sand is filled to the inside of sand box, and its filling capacity can be adjusted, the top opening of sand box, and the upper pier wood is placed on the graded sand in the inside of sand box and can be adjusted fixed with sand box. The utility model whole simple structure, and each component is connected through bolt, and the disassembly is convenient, and the on -the -spot construction is convenient, the upper pier wood is multilayer multicolour arrangement, and the lower pier wood is single layer multicolour arrangement, and the size of concrete pier is larger than conventional pier, and the carrying capacity of pier whole is effectively promoted, thereby satisfies heavy load use working condition requirement, and the bearing balance is better, still realizes the adjustment of pier height through the adjustment of cheap graded sand filling capacity, and the overall cost of pier is reduced, and the manufacturing cost is reduced.

This invention discloses a torsional-lateral coupling vibration control device for a gear system based on electro-magnetic drive, comprising a base, a stator fixed to the base, a gear body connected to the shaft body, and a mover fixed to the gear shaft body. The mover is located in the middle of the stator, and a magnetorheological fluid is injected into and sealed in the cavity between the stator and the mover. Two sets of torsional excitation coils wound along the circumferential direction of the shaft are symmetrically arranged in the stator about the mover. The tangential torque of the magnetorheological fluid is changed by adjusting the excitation current. A torsional vibration isolation ring is provided in the inner diameter direction of the torsional excitation coil windings. Multiple pairs of poles are provided in the stator, and a uniform air gap is provided between the poles and the mover. A transverse vibration excitation coil is wound on each pole, and each set of transverse vibration excitation coils forms an electromagnet. The transverse constraint of the electromagnet on the mover is changed by adjusting the excitation current. A transverse vibration isolation ring is provided between the mover and the stator wall. This invention can reduce vibration and noise.

The invention discloses a production load balance control system and a control method thereof, belongs to the technical field of production scheduling, and is used for solving the problem of unbalanced scheduling load of multi-variety and small-batch products, the control system comprises a top layer module, a middle layer module and a bottom layer module, and the three modules can communicate information with one another; the top layer module is used for inputting and analyzing an order, and converting an order load to a frequency domain through a Fourier load smoothing algorithm; the middle layer module is used for arranging the optimal order sequence, arranging the optimal order sequence of the orders by adopting a three-dimensional evaluation matrix method on the premise of ORR optimal rule sorting, and generating an order delivery sequence; and the bottom layer module is used for dispatching of a job shop layer and issuing order tasks generated by the top layer module and the middle module to each job device. According to the invention, the problem of excessive production scheduling is inhibited from the source, and the balance of the load of the whole chain from order receiving to delivery to dispatching is realized through a layered ladder control architecture.

This invention belongs to the field of ship shafting installation technology and discloses a method for illuminating the displacement of ship shafting bearings. The method includes the following steps: Step S1: Establish a first and second reference point for the theoretical shaft centerline; Step S2: Set adjustable optical targets in the inner holes of multiple bearings, confirming that the crosshairs of the adjustable targets coincide with the axis of the inner holes; Step S3: Establish a micrometer collimating telescope behind the first reference point; Step S4: Adjust the micrometer collimating telescope so that its crosshairs coincide with the first and second reference points; Step S5: Based on the displacement, establish parallel axes for positioning multiple bearings using the micrometer collimating telescope; Step S6: Using the parallel axes for positioning multiple bearings as references, align the crosshairs of the targets of multiple bearings with the parallel axes for positioning, completing the positioning of each bearing. This method for illuminating the displacement of ship shafting bearings avoids the scribing deviation caused by manual scribing, ensures the bearing displacement, and results in stable shafting operation with low noise.

This invention provides a fuel cell system capable of load balancing of multiple auxiliary machines. The fuel cell system includes: one or more flow paths; multiple auxiliary machines; and a control device that controls the operation of the multiple auxiliary machines and is capable of selectively executing a first operating mode and a second operating mode. The multiple auxiliary machines include a first auxiliary machine and a second auxiliary machine. In the first operating mode, the operating range or probability of operation set for the first auxiliary machine is greater than the operating range or probability of operation set for the first auxiliary machine in the second operating mode. In the first operating mode, the operating range or probability of operation set for the second auxiliary machine is less than the operating range or probability of operation set for the second auxiliary machine in the second operating mode. The control device is configured to execute the first operating mode when the first cumulative operating amount of the first auxiliary machine is less than or equal to the first predetermined amount, and to execute the second operating mode when the first cumulative operating amount exceeds the first predetermined amount.

The application discloses a spring operating mechanism and method for a circuit breaker, and belongs to the technical field of circuit breakers, which comprises a clamp plate type frame, an energy storage to position clutch, a closing holding and a manual closing soft interlocking device, the clamp plate type frame is fixedly connected by opposite first and second side plates through a supporting piece; an energy storage motor of an energy storage transmission device is connected with an energy storage shaft through a transmission assembly, a cam is arranged on the shaft, and an energy storage holding buckle is arranged; the energy storage to position clutch device is a one-way clutch assembly connecting the transmission assembly and the energy storage shaft; the closing holding device comprises a hinged opening release assembly, a reset elastic piece and a linked output shaft; the manual closing soft interlocking device comprises a sliding manual operating assembly, a closing trigger piece and an interlocking assembly, and is matched with the energy storage holding buckle; the problems of the existing spring operating mechanism for the circuit breaker, such as the reliability, structure, cost or precision related defects of the energy storage clutch device, the manual closing mechanical interlocking, the closing holding structure and the modular mechanism cooperation are solved.

The utility model relates to a kind of artificial valve, the artificial valve includes valve frame, valve leaflet;The valve leaflet is arranged in the valve frame;The valve frame includes multiple double-grid structures, the double-grid structure includes first grid unit and second grid unit being adjacent in the circumferential direction or axial direction of the valve frame;Wherein one double-grid structure and adjacent another double-grid structure circumferential dislocation, axial interface.It is prevented that the valve frame is expanded in axial and / or circumferential direction instantaneously by the above-mentioned setting when the valve frame is inflated and expanded by balloon, so that the double-grid structure is mutually restrained in the axial and / or circumferential direction of the valve frame, to avoid the distortion of the strut of the valve frame when balloon inflation and expansion reach initial critical pressure.

The invention belongs to the field of agricultural machinery, and discloses a composite vibration type rat-way plough which comprises a machine frame, a power source, a suspension shock-proof assembly, a plough handle, a plough head, a flexible shaft and a rat-way plastic extruding device. The upper end of the plough handle is elastically connected with the rack through a suspension shock-proof assembly, and the lower end is connected with a plowshare. One end of the flexible shaft is in driving connection with the rotating shaft, and the other end of the flexible shaft is in transmission connection with the power source. The suspension shock-proof assembly comprises a plate spring assembly and a distribution beam, and double-plate-spring arrangement and connecting rod coupling can be achieved. And the front end of the plowshare is provided with an end head part with a wave surface impact mechanism, so that the rotary motion can be converted into axial impact. Power drives the flexible shafts through the first gear box, the transmission shaft and the second gear boxes which are symmetrically arranged in the center. And the mouse channel plastic extruding device is flexibly connected with the plowshare through a steel strand. Independent vibration and impact composite ground breaking of the plowshare is achieved, and the device has the advantages of energy concentration, good vibration isolation effect and high adaptability and is used for agricultural rat channel drainage operation.

The utility model relates to circuit control technical field especially, relates to an automatic switching controller device, solved the problem that the power left over of each single -way system in different period can not satisfy the demand of new equipment, real -time dynamic residual power cannot carry out reasonable distribution utilization. A kind of automatic switching controller device, including several groups of power supply system, for providing multiple three-phase ac power supply;Several groups of load circuit;Automatic switching controller, for monitoring and adjusting the load of power supply system;Disconnecting switch, for isolating the electrical connection between power supply system and load circuit;Change-over switch, for cooperating automatic switching controller to switch the connection loop between load circuit and power supply system, automatic switching controller is electrically connected with power supply system, load circuit respectively by wire connection. The utility model can carry out unified distribution power supply, can make transformer and other power supply equipment load even, improve power supply quality, improve equipment utilization.

A centrally installed switchgear valve and guide rail assembly structure is characterized in that the centrally installed switchgear comprises a switchgear body and a valve fixedly connected with the switchgear body, and the centrally installed switchgear comprises a bottom plate fixed on the switchgear body; the guide rail is arranged on the bottom plate for guiding the circuit breaker to enter and exit the cabinet; the valve driving rod is arranged on the mounting plate and is driven by the circuit breaker to open and close the valve when the circuit breaker enters and exits the cabinet; wherein the guide rail is fixedly arranged on the bottom plate, and the distance between the guide rail and the valve is kept unchanged when the circuit breaker is switched on and switched off. An assembly type structure is adopted, the guide rail and the valve are integrated on the bottom plate in advance, modular installation is formed, the tedious process that customers purchase and assemble parts by themselves is reduced, assembly is avoided, and the installation efficiency is improved.

This invention discloses a strength calculation method for a heavy-duty support structure comprising multiple support surfaces. The support structure includes: a base plate; an arc-shaped cover plate located above the base plate; and two side wing plates, each connected to both ends of the base plate via a first connecting portion and to both ends of the arc-shaped cover plate via a second connecting portion. The lower surface of the base plate is the bottom plane, and the lower surface of the side wing plates is the side wing surface. Both the bottom plane and the two side wing surfaces can serve as support surfaces. The strength calculation method includes: S1, when the support structure uses bottom plane support, determining the critical section and performing stress analysis and strength calculation on the critical section; S2, when the support structure uses two side wing surface support, determining the critical section and performing stress analysis and strength calculation on the critical section. The support structure of this invention can use two side wing surface support, reducing dependence on vehicles, and provides a precise strength calculation method to ensure the safety and reliability of the support structure.

The utility model provides a bracket suitable for safe transfer of a liquid chlorine steel cylinder, which comprises a base, a group of supporting mechanisms are arranged on the upper portion of the base, the liquid chlorine steel cylinder is placed on the supporting mechanisms, reinforcing rings are symmetrically arranged on the outer side wall of the liquid chlorine steel cylinder, and fixing frames are arranged on the upper portion of the base and located on two sides of the arc-shaped outer wall of the liquid chlorine steel cylinder. Due to the fact that the base is provided with the fixing frames and the flexible restraining pieces, axial movement of the liquid chlorine steel cylinder can be effectively limited, collision and friction caused by bumping and sudden braking in the transportation process are avoided, the surface of a valve and the surface of the steel cylinder are protected, the leakage risk is reduced, and the transportation safety is improved.

This utility model relates to the field of hanging frame technology, specifically a hook-type silage bag hanging frame, including a shelf. Vertical rods are fixedly installed on the upper surface of the shelf, near the four corners. A horizontal rod is fixedly installed at the top of each vertical rod on an adjacent side. A second vertical rod is inserted into the upper surface of the horizontal rod. By setting up a buffer assembly consisting of a sleeve, a sliding rod, and a spring, when vibration occurs during lifting, stopping, or transportation, the sliding rod can slide smoothly within the sleeve and, in conjunction with the elastic deformation of the spring, absorb vibration energy. This effectively reduces the impact of vibration on the frame connecting block, heavy-duty collar, and the silage bags below, preventing the bags from shifting or slipping due to vibration. It also reduces vibration wear on the connecting components of the hanging frame, extending the overall service life of the equipment.

The application discloses a swing arm type side mounting device, a side mounting wrecker and a side mounting method, relates to the technical field of wreckers, and comprises two oppositely arranged transverse traction telescopic mechanisms, and a tray is arranged below each of the two transverse traction telescopic mechanisms. Two scissor type lifting machines are arranged in the tray in front of and behind each other, and the two scissor type lifting machines can be laterally extended from the tray to the positions of the wheels of a fault vehicle and abut against the front edges and the rear edges of the wheels of the fault vehicle respectively, and are used for lifting the fault vehicle. The transverse traction telescopic mechanism can be extended to below the wheels of the lifted fault vehicle, and after the scissor type lifting machine is reset, the fault vehicle is transversely moved to a preset position. The application is combined with the independent tire supporting of the scissor type lifting machine and the non-alignment connection of the multi-stage sliding groove, utilizes the four-point tire supporting and the swing arm type side moving structure, eliminates the risk of the chassis of the rescued vehicle being bumped, greatly improves the stability and the automation degree of heavy load side mounting, and completely solves the problems of guiding jamming and unstable center of gravity in traditional side mounting operation.

This invention relates to the field of plastic processing machinery, specifically disclosing an intelligent correction and cutting system and method for PE foam boards. The system includes modules for online acoustic scanning, multimodal data fusion and defect characterization, dynamic path planning and correction, adaptive execution control, and system collaborative management. It detects defects in real time through online ultrasonic scanning, identifies and locates them using a deep learning model, and dynamically plans obstacle avoidance or process adjustment paths based on defect types, while simultaneously controlling the cutting execution mechanism. This achieves adaptive correction during the cutting process, improving cutting quality, tool life, and production efficiency. This invention, by integrating online acoustic scanning and deep learning recognition technologies, achieves for the first time real-time, accurate detection and classification of invisible defects inside PE foam boards during the cutting process.

The utility model relates to a battery assembly, a battery pack and a vehicle, the battery assembly comprises a battery pack bottom structure, a connecting plate and a reinforcer, the battery pack bottom structure is connected with the reinforcer, and the connecting plate is connected with the battery pack bottom structure; wherein the battery pack bottom structure and the connecting plate have widths in the left-right direction of the battery assembly, the width of the battery pack bottom structure is larger than that of the connecting plate, and the part, exposed out of the connecting plate, of the battery pack bottom structure in the left-right direction is configured as a mounting area; the reinforcing piece is provided with at least one pair of reinforcing ribs; the reinforcing ribs are at least partially positioned in the mounting area; the reinforcing rib is provided with a first side and a second side which are oppositely arranged in the left-right direction, and the first side is far away from the connecting plate compared with the second side; in the front-back direction of the battery assembly, the distance between the two reinforcing ribs on the first side is smaller than the distance between the two reinforcing ribs on the second side. The battery assembly is suitable for improving the safety performance of the battery pack during side collision.

This invention discloses a dynamic decision-based longwall fully mechanized coal mining technology using two mining machines, belonging to the field of coal mine monitoring and control technology. The technology includes: a first mining machine and a second mining machine simultaneously starting coal mining from both ends of the working face; at the start of mining, the central control system determines an initial convergence point based on first and second initial state data; during mining, a first sensor and a second sensor collect first and second motion state data in real time, and the central control system determines a dynamic convergence point based on these data; the central control system adjusts the working states of the first and second mining machines in real time based on changes in the dynamic convergence point. This invention provides a dynamic decision-based longwall fully mechanized coal mining technology using two mining machines, generating a dynamic convergence point through dynamic real-time decision-making, thereby minimizing waiting time and achieving seamless coordination.

This invention relates to the field of wind power generation technology, specifically to an in-workshop testing system for the yaw system of a wind turbine generator set. After assembling the yaw system and yaw bearing, the system controls the start / stop, speed, and direction of the yaw motors via a yaw test cabinet, enabling testing of multiple yaw motors within the yaw system and improving its reliability. The invention also relates to an in-workshop testing method for the yaw system of a wind turbine generator set. This method controls the start / stop, speed, and direction of the yaw motors via a yaw test cabinet, acquires the current signals of each yaw motor, obtains the stress conditions of each yaw motor based on these current signals, and then adjusts the tooth clearance between the gears of the yaw gearbox and the gears of the generator set bearings based on these stress conditions. This results in a more even distribution of load across the multiple yaw motors in the yaw system, further improving the reliability of the yaw system.

The application discloses a method and device for performing bearer migration, electronic equipment and a storage medium. The method for performing bearer migration comprises the following steps: obtaining load information of an NSA node; and performing bearer migration according to the obtained load information. According to the embodiment of the application, the load information of a candidate NSA node is actively or passively obtained, and bearer migration is performed according to the obtained load information of the candidate NSA node, so that the pressure of a high-load NSA node is relieved, the load of the NSA nodes in NSA networking is relatively balanced, and the running efficiency is high.

The utility model discloses a balanced thread structure which comprises a base body, a thread and an axial decreasing subtractive material, the thread is formed on the surface of the base body, the axial decreasing subtractive material is at least formed in a screwing area of the thread, and the subtractive quantity of the axial decreasing subtractive material is gradually decreased from the maximum load end of the thread to the minimum load end of the thread in the axial direction of the thread. According to the balanced thread structure, on the premise that basic parameters of standard threads are not changed and axial installation space is not increased, through local axial decreasing and material decreasing, threaded connection load distribution optimization is achieved.

The present application relates to the technical field of gear cutting tools, and particularly relates to a helical gear shaving tool for helical gear shaving, which comprises a tool body and gear teeth distributed along the circumference of the tool body, the gear teeth comprising a main relief surface, a plurality of cutting edges arranged in layers, and a front surface corresponding to each cutting edge, a sub-relief surface being arranged between each layer of cutting edges and the main relief surface, and the sub-relief surface being connected to the main relief surface; the rake angle of the top edge gradually decreases from the bottommost layer of cutting edges to the topmost layer of cutting edges, the relief angle of the top edge gradually increases from the bottommost layer of cutting edges to the topmost layer of cutting edges, and the angle between the main relief surface and the cutting plane is greater than the relief angle of the topmost layer of cutting edges; and each layer of cutting edges is conjugate to the tooth surface of the helical gear during the helical gear shaving process. The present application can reduce the wear of the gear teeth during the helical gear shaving process, and prolong the service life of the helical gear shaving tool.