187results about How to "Small form factor" patented technology

The invention discloses a handle-locked two-core single-ended waterproof high-voltage connector, which is provided with a handle arranged outside a head shell assembly and used for connecting a plug and a socket, the socket comprises a socket shell, and a socket shielding cover, jacks, a socket outer sealing ring, a socket inner sealing ring, a signal pin assembly and the like which are arranged in the socket shell; through multi-stage waterproof, the socket can independently seal water vapor when the plug and the socket are not plugged in each other. According to the invention, the plug and the socket are plugged and fixed in a quick handle locking manner, so that the reliability of plugging and fixing of the plug and the socket is ensured; the connector socket has an independent waterproof function, and can protect a plate end from water vapor entering to cause damage to a device under a special working condition; a multi-lip sealing ring is adopted for waterproof sealing, and compared with a conventional O-shaped sealing ring for single-layer protection, the structure is more reliable, and good sealing performance and anti-aging performance are achieved; and through a shielding conduction structure, the whole connector has good electromagnetic shielding effectiveness and mechanical strength.

The invention relates to the technical field of semiconductors, and discloses a wafer carrying manipulator, a use method thereof and electroplating equipment. The electroplating equipment comprises a wafer carrying manipulator and a clamp, the wafer carrying manipulator comprises a support assembly, at least two adsorption arms and a driving assembly, the at least two adsorption arms are arranged at intervals in the circumferential direction of the support assembly, vacuum adsorption openings used for adsorbing wafers are formed in the adsorption arms, and the adsorption arms are in sliding fit with the support assembly; the driving assembly is installed on the support assembly and is in transmission fit with all the adsorption arms, and the driving assembly can drive all the adsorption arms to extend outwards relative to the support assembly in the radial direction or retract inwards relative to the support assembly. According to the wafer carrying mechanical arm, on the basis that it is guaranteed that the wafer carrying mechanical arm smoothly stretches into the position between the base and the pressing disc, stress areas on the two sides of the grabbed wafer are consistent, wafer fragmentation is avoided, the productivity is improved, and the manufacturing cost is reduced.

The invention discloses an optical fiber connector and a plug, a socket, a pin component and a jack component thereof. The optical fiber connector comprises a flange plate I and a sleeve piece, a through cavity I is formed in the flange plate I along the central axis direction, the head end of the cavity I is used for accommodating and fixing the end part of a contact pin I, and the interior of the cavity I is blocked to realize sealing; a through cavity II is formed in the sleeve piece in the direction of the central axis, and an elastic piece is arranged in the cavity II; the tail end of the flange plate I penetrates through the elastic piece in the cavity II and extends outwards; the elastic piece is used for achieving axial floating of the flange plate I relative to the sleeve piece. The high-temperature-resistant and high-pressure-resistant sealed optical fiber connector can meet the requirements of a high-temperature and high-pressure environment in an inserted state and a separated state. The high-temperature and high-pressure sealing optical fiber connector is divided into a plug connector and a socket connector, the high-temperature and high-pressure environment requirement can be met in the plug-in state of the head and the socket, and the high-temperature and high-pressure environment requirement can be met when the head and the socket are separated.

The utility model discloses a revolver toy pistol which comprises a pistol body, a rotating wheel, a trigger, a driving hammer, a pressing pump, a water cavity, a nozzle, a water outlet pipe, a water inlet pipe and a linkage pawl, the pressing pump is arranged in the pistol body corresponding to the rear side position of the trigger, the lower end of the linkage pawl is connected with the trigger, and the upper end of the linkage pawl extends to the position of the rotating wheel. When the trigger is pulled, the pressing pump is pressed down, so that water in the water cavity is pumped, and the water is conveyed to the nozzle through the water outlet pipe to be sprayed out. Meanwhile, the linkage pawl pushes the pushing teeth on the rotating wheel under the action of the trigger, the rotating wheel is forced to rotate, the rotating action of the rotating wheel of the revolver is simulated, the simulation effect is good, and the interestingness of the toy is effectively improved; the whole body is in a revolver shape, is novel in modeling, small in appearance and light in weight, and is convenient for young children to carry and play; in addition, when the trigger is pulled, the driving hammer can be pushed to lean backwards and rapidly reset to hit and produce sound, the firing process of a real pistol is simulated, the firing effect is further enhanced, and the entertainment of the toy is improved.

The utility model relates to the field of power grid switch cabinets, in particular to a low-voltage cabinet of a high-capacity photovoltaic box-type substation. A low-voltage cabinet of a large-capacity photovoltaic box-type substation comprises a cabinet body and a low-voltage distribution box connected with the cabinet body, the cabinet body is divided into an upper layer and a lower layer through a lower busbar, the cabinet body comprises a main cabinet and an auxiliary cabinet which are movably connected, a frame circuit breaker is installed on the upper layer of the main cabinet, and a plurality of lower-row molded case circuit breakers are arranged on the lower layer of the main cabinet. The plurality of lower-row molded case circuit breakers extend to the lower layer of the auxiliary cabinet and are sequentially arranged at intervals, the upper layer of the auxiliary cabinet is provided with a plurality of upper-row molded case circuit breakers and an upper busbar, and the upper layer of the auxiliary cabinet is also provided with a UPS (Uninterrupted Power Supply) system; according to the utility model, by designing the installation cross arms and the installation plates, various components are reasonably arranged in a limited space, and the molded case circuit breakers are divided into an upper row and a lower row for installation according to a multi-outgoing-line loop layout, so that the overall dimension of the whole low-voltage cabinet is reduced.

The utility model relates to an automobile combination switch, which comprises a switch body and a handle shell, a first mounting seat, a second mounting seat and a third mounting seat which are sequentially stacked are fixedly arranged in the handle shell, a first knob is rotatably arranged on the first mounting seat, a first elastic contact piece is fixedly arranged on the first knob, and a second elastic contact piece is fixedly arranged on the third mounting seat. A first contact circuit board abutting against the first elastic contact piece is fixedly arranged on the second installation base, a window located on one side of the first rotary knob is formed in the handle shell, a shifting part extending out of the window is formed on the first rotary knob, a second rotary knob is rotationally arranged on the second installation base, and a second elastic contact piece is fixedly arranged on the second rotary knob. A second contact circuit board abutting against the second elastic contact piece is fixedly arranged on the third installation base, the second rotary knob is sleeved with a rotary knob shell, and the first contact circuit board, the second contact circuit board and the third contact circuit board are integrated on a flexible circuit board. The automobile combination switch is high in integration level, easy to assemble and more compact in structure.

The utility model discloses a bidirectional blocking device, and the device comprises a first transistor die and a second transistor die which respectively comprise a first surface and a second surface, the first surface is provided with a source electrode and a grid electrode, and the second surface is provided with a drain electrode; the source electrode conductive channel is connected with the source electrode of the first transistor tube core and the source electrode of the second transistor tube core; the grid electrode conductive channel is connected with the grid electrodes of the first transistor tube core and the second transistor tube core, the first surfaces of the first transistor tube core and the second transistor tube core are oppositely arranged, and the source electrode conductive channel transversely extends between the first surfaces of the first transistor tube core and the second transistor tube core; the first transistor die is in contact with a source of the first transistor die and a source of the second transistor die. According to the bidirectional blocking device provided by the invention, the two transistor tube cores of which the first surfaces are oppositely arranged are connected in series in the direction perpendicular to the surfaces of the tube cores through the conductive channel, so that the on resistance and the size of the device can be effectively reduced.

The utility model discloses a waste guide wire collector for medical catheterization. The paper box comprises an upper box, a reel, a lower box and a gate, guide wire inlets are formed in the annular side walls of the upper box and the lower box respectively and movably connected with the side wall of the upper box body through rotating shafts, and the rotating shafts are located on the side wall of the upper box body at the top ends of the guide wire inlets. The lower box is of an integrated structure. The inner shaft is fixed to the center of the inner wall of the bottom face of the lower box. The reel is composed of an upper panel, a lower panel, an outer shaft and a handle, the upper panel is fixed to the inner wall of the top face of the upper box, the lower panel is fixed to the inner wall of the bottom face of the lower box, the outer shaft sequentially penetrates through the upper panel, the inner shaft and the lower panel, and the handle is fixed to one end of the outer shaft; and the side walls of the outer shaft and the inner shaft are respectively provided with an opening matched with the guide wire inlet. The guide wire collecting device is small and exquisite in appearance, simple and convenient to operate and capable of rapidly and effectively collecting waste guide wires in the medical operation process.

The invention provides a modularized direct-current steady-current water-cooling power supply device which is used for solving the technical problems that an existing water-cooling power supply device is large in overall structure size, large in weight, low in integration level and the like. The power supply device comprises a case, an input unit, a control unit, a water-cooling power unit and a switching output unit, wherein the case is a bearing carrier; the input unit is installed on the rear end face of the case. The control unit comprises a control panel, a power distribution module, a subrack module, a control circuit board and at least one digital circuit board card; the water-cooling power unit is mounted in the case; and one end of the switching output unit is connected with the output end of the water-cooling power unit and used for receiving direct current, and the other end is connected with an external power supply carrier. According to the power supply device, a modular structural design is adopted, all functional parts are integrated in the case, the overall integration degree of the power supply device is greatly improved, and therefore the boundary dimension of the power supply device is reduced.

The utility model discloses an integrated joint module and robot relates to motor technical field, and the integrated joint module includes: casing, motor, planetary gear reduction box, encoder and drive control board, the casing is the tubular structure, the motor is used to provide power, and the motor includes stator, rotor and rotation axis, and the stator is hoisted in the top inside casing, and the rotor rotatably sets up inside casing, and is located stator outside, and rotation axis is connected with the rotor, and its outer periphery is provided with the tooth, the planetary gear reduction box sets up in stator inside, and including fixedly installed inside stator's inner tooth ring, the planetary wheel that engages in the inner tooth ring with rotation axis between and the planetary wheel connection's planet carrier, the encoder includes the first encoder for monitoring rotation axis and the second encoder for monitoring planet carrier, and drive control board is located in casing, and is connected with motor. Such setting, can reduce the size of joint structure, realizes double magnetic encoder output configuration simultaneously, improves its output accuracy.

The invention discloses a small rotary measuring seat which comprises a support, a mandrel, an optical measuring head, a driving device, an encoder and a braking device. The support is of an n-shaped structure, and a non-interference area is defined in the support. The mandrel is rotationally connected with one side of the bracket; the optical measuring head is arranged in the middle of the mandrel, and the optical axis of the optical measuring head is perpendicular to the axis of the mandrel. The driving device is arranged on the support, and the output end of the driving device is connected with the mandrel and used for driving the mandrel to rotate around the axis of the mandrel. The encoder is installed on the mandrel and used for detecting the rotation angle of the mandrel. The braking device is installed on the support, and in the braking state, the braking device makes contact with the central spindle and generates friction with the central spindle, so that braking of the central spindle is achieved. According to the small-sized rotary measuring seat provided by the invention, a stepless and high-positioning-precision swinging function is realized, and meanwhile, the measurement of the profile of an inner cavity of a small-sized part is completed.

The application discloses a kind of SF6 density relay comprehensive calibration instrument and calibration and measurement method, including intermediate pipeline and be located on the air pump of intermediate pipeline, the one end of the intermediate pipeline is respectively communicated with the one end of safety valve pipeline, first pipeline one end, second pipeline one end, the other end of intermediate pipeline is respectively communicated with the one end of micro water measuring pipeline and third pipeline one end, the other end of the micro water measuring pipeline is respectively communicated with the one end of inlet pipeline and purity measuring pipeline, the other end of third pipeline is respectively communicated with the other end of first pipeline and fourth pipeline one end, the other end of the fourth pipeline is respectively communicated with the other end of purity measuring pipeline, the other end of second pipeline and muffler pipeline, intermediate pipeline side is equipped with suction pipeline;The application has adopted new pneumatic circuit design, combines density relay system calibration circuit with moisture measurement circuit and purity measurement circuit together, with the characteristics such as high measurement efficiency, convenient, its loop structure is simplified, and measurement is efficient.

The utility model discloses a handheld part and pruning machine, wherein the handheld part comprises a main machine, a main handle and a battery pack, the main handle is detachably installed at the rear end of the main machine, and the battery pack is detachably installed at the main handle. The utility model changes the inseparable installation mode of the main handle with relatively large space occupation on the handheld part and the main machine in the traditional structure, the main handle is designed to be detachably installed on the main machine, so that the main handle is removed during packaging and transportation, thereby effectively reducing the size of the handheld part, laying a foundation for optimizing the packaging size of the pruning machine, thereby saving the transportation cost. In addition, the battery pack is detachably installed on the main handle, which can ensure the continuous operation of the main machine by replacing the battery pack, and further saves the packaging space. The battery pack is disassembled and packaged, making the transportation and packaging design more flexible.

The invention discloses a dual-fuel engine and a vehicle, and belongs to the technical field of engines. A dual-fuel engine includes: a cylinder head; the dual-fuel injector is arranged on the inner side of the cylinder cover; the dual-fuel rail is arranged on the outer side of the cylinder cover and mounted on the cylinder cover, and a first oil supply channel and a second oil supply channel are formed in the dual-fuel rail; the two-way transmission pipe is installed on the cylinder cover and is provided with a first transfer channel, a second transfer channel, an oil drainage transfer channel and a flow collecting groove, the first transfer channel communicates with the first oil supply channel and the dual-fuel injector, the second transfer channel communicates with the second oil supply channel and the dual-fuel injector, and the flow collecting groove communicates with the oil drainage transfer channel. A flow collecting cavity is defined by the inner wall of the flow collecting groove and the dual-fuel injector, one end of the oil drainage transfer channel communicates with the flow collecting groove, and the other end of the oil drainage transfer channel is located outside the cylinder cover.

The invention relates to a front-end superfine-diameter optical imaging module for an ophthalmic fiber-optic endoscope system. The front-end superfine-diameter optical imaging module for the ophthalmology optical fiber endoscope system comprises a superfine-diameter objective lens; the superfine-diameter objective lens comprises a front lens group and a rear lens group; the front lens group comprises a first lens element with negative focal power and a second lens element with negative focal power, each of the first lens element and the second lens element comprises an object side surface and an image side surface, the first object side surface of the first lens element is a plane, the first image side surface of the first lens element is a concave surface, and the second object side surface of the second lens element is a convex surface. The second object side surface of the second lens element is a concave surface, the second image side surface of the second lens element is a plane, and the concave surfaces are oppositely attached; according to the front-end superfine-diameter optical imaging module for the ophthalmic optical fiber endoscope system, the overall boundary dimension is effectively reduced, the machining and assembling difficulty is greatly reduced, and the stability of the system is improved.

The present invention relates to the technical field of medical devices, and discloses a skin suture tension controller, including a housing, a ratchet assembly, a knob cover and a pull wire. The housing is hollow with an installation cavity, and the ratchet assembly includes an upper ratchet, a lower ratchet and a pawl. The lower ratchet rotates a rotating shaft sleeved on the bottom of the installation cavity, and the lower ratchet selectively docks with the upper ratchet to engage the transmission; the top of the housing is provided with an installation opening with an inner ratchet portion in the inner ring, and when the pawl is connected to the upper ratchet and engages with the inner ratchet portion, the upper ratchet can only rotate in the tightening direction; a pull wire hole is provided on the side of the housing, and the two ends of the pull wire are aligned and pass through the pull wire hole and are wound around the lower ratchet. The bottom of the knob cover is connected to the upper ratchet, and a control docking groove is provided on the top. The structure is simple and stable, and the fluctuation in use is small, which effectively improves the patient's treatment experience; the production cost is low, and it is easy to assemble; it can accurately control and realize stepless adjustment of the tension, and improve the scope of application.

The utility model discloses a rail transit door lock device, including mounting seat, transmission plate, side surface positioning wheel, lock pin, guide rail, switch, connecting rod one and connecting rod two, one side of transmission plate is connected with connecting rod one, connecting rod two through short axle, forms hinged point no.

The application discloses a five-axis stacking robot. The five-axis stacking robot comprises a lifting platform device, a rotating device, a large-arm support, a large-arm mechanism, a small-arm mechanism and a grabbing and releasing mechanism; the rotating device is installed at the top of the lifting platform device through the large-arm support and can rotate relative to the lifting platform device; the swinging end of the large-arm mechanism is rotationally connected with one end of the small-arm mechanism, and the other end of the small-arm mechanism is rotationally connected with the grabbing and releasing mechanism. The stacking robot has the advantages of large stacking range and small motor power.

The utility model relates to a linear motor with a stable structure, which comprises a support base, an electromagnet, a plurality of groups of movable assemblies and a plurality of groups of spring assemblies, and the support base, the plurality of groups of movable assemblies and the plurality of groups of spring assemblies are connected to form an integrated frame structure. Each movable assembly comprises a movable head and a permanent magnet fixed to the movable head, the permanent magnets and the electromagnets are arranged in an up-down corresponding mode, the multiple movable assemblies are distributed side by side in the position perpendicular to the moving direction of the movable heads, and the multiple spring assemblies are distributed on the two sides of the supporting base side by side in the position perpendicular to the moving direction of the movable heads. Each spring assembly is connected with the supporting base and the movable assembly. The electromagnet comprises an iron core and a coil, the coil is arranged on the supporting base and under the permanent magnet, and the supporting base is provided with a through hole allowing the iron core to penetrate from bottom to top. The utility model has the following advantages: by adopting the integrated structure, the overall dimension of the motor can be properly reduced while the stability of the bottom structure is ensured, and the assembly is convenient.

This application discloses an electric drive system and a vehicle, relating to the technical field of vehicles. The electric drive system includes: a motor, comprising a stator, an inner rotor, and an outer rotor; an outer rotor output shaft, comprising a first shaft segment and a second shaft segment, the first shaft segment being fixedly connected to the outer rotor; an inner rotor output shaft, fixedly connected to the inner rotor; a primary reduction mechanism, comprising a primary first drive gear and a primary second drive gear, the primary first drive gear being loosely fitted onto the inner rotor output shaft, and the primary second drive gear being fixedly connected to the second shaft segment; a first switching device, installed on the inner rotor output shaft and the primary first drive gear; under the action of the first switching device, the inner rotor output shaft and the primary first drive gear are dynamically coupled or decoupled; a second switching device, installed on the first shaft segment and the second shaft segment, under the action of the second switching device, the first shaft segment and the second shaft segment are dynamically coupled or decoupled.

The present invention discloses a pipe-rod conveyor, which relates to the field of mechanical equipment and solves the problem that the pipe-rod conveyor in the prior art has no sucker rod conveying function. The feeding clamping mechanism of the present invention is used to clamp the pipe column and / or the sucker rod, and convey the pipe column and / or the sucker rod to the pulley clamping mechanism for clamping; the lifting mechanism is installed on the track changing mechanism, so that the lifting mechanism can increase its height while moving forward; the pulley mechanism is installed in the slide groove of the lifting mechanism and moves in the horizontal direction in the slide groove; the pulley clamping mechanism is installed in the pulley mechanism, so that the pulley clamping mechanism can drive the pipe column and / or the sucker rod clamped on the pulley clamping mechanism to move in the horizontal direction through the horizontal movement of the pulley mechanism. The pipe-rod conveyor can realize the conveying of sucker rods, which solves the technical problem that the pipe-rod conveyor in the prior art has no sucker rod conveying function and still uses manual labor to drag the sucker rod to the pipe rack, which is labor-intensive.

The present invention relates to a special oil cylinder for forming a super pipe nozzle, wherein the upper part of the cylinder has an upper concave plane, arc supports are formed at both ends of the upper concave plane, and a hole for the piston rod to enter and exit is provided in the middle of the upper concave plane; the piston rod head has an inverted T-shaped groove, and the inverted T-shaped groove matches the convex block at the bottom end of the hot extrusion punch; there are rectangular water tanks on the concave surfaces on both sides of the cylinder, and the rectangular water tanks on both sides are connected through three cooling water pipelines that run through the oil cylinder; spring balls are evenly distributed on the circular arc at the bottom of the oil cylinder, and the bottom entrance end of the oil cylinder is chamfered. The present invention is an oil cylinder integrally forged from PCrNi3MoVQ material, which can ensure high strength of the cylinder body. There are spring balls on the bottom circular arc, and the entrance end of the oil cylinder is chamfered, which is convenient for entering and exiting the super pipe; there is a waterway, and it is sealed to ensure that the temperature of the oil cylinder can be maintained at 45°-55° when it is working normally. The present invention can meet the conditions for completing the top extension in the super pipe; while ensuring a pressure of 650T, the outer dimensions are small.

The utility model discloses a LCD projection structure with aspheric reflector, which comprises an LCD screen, a Fresnel lens, a projection lens and an aspheric reflector. The LCD screen is arranged on the front side of the Fresnel lens, the projection lens is arranged on the back side of the Fresnel lens, and the aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The structure design utilizes the reflection characteristics of the aspheric reflector to change the propagation path of light, provides sufficient optimization freedom for the projection lens, and makes the projection lens not need to spend energy to deal with the optical correction problem. Therefore, all optimization resources can be concentrated on the improvement of picture quality and depth of field, so as to improve the quality of the projection picture.

The present invention provides a high-sensitivity FBG high-temperature sensor and its working and manufacturing methods. The sensor includes two channels with different functions. One is used as a temperature compensation channel of the sensor, and the other is used as an indirect temperature measurement channel of the sensor. The two channels each contain an FBG and have the same packaging structure. The sensor has the characteristics of small size and high high-temperature sensitivity, and can connect multiple sensors in series. The invention is particularly suitable for fields involving high-temperature sensing such as aerospace, hot wells and oil fields.

The utility model discloses a premixing water-cooling gas vacuum phase change hot water boiler which comprises a front premixing fan, a combustion furnace, a water-cooling combustor and the like, the water-cooling combustor comprises a water-cooling fire row tube bundle, an upper header is arranged at the top of the combustion furnace, and a lower header is arranged at the bottom of the combustion furnace. The water-cooling fire grate tube bundle and the convection heat exchange tube bundle are communicated with the upper header and the lower header; a front water chamber and a rear water chamber are arranged on two sides of the upper header, a tube pass heat exchange tube bundle is arranged in the upper header, a water inlet tube seat and a water outlet tube seat are arranged on the front water chamber or the rear water chamber, or the front water chamber or the rear water chamber is provided with the water inlet tube seat, and the rear water chamber or the front water chamber is correspondingly provided with the water outlet tube seat. The water inlet end of the tube pass return tube is communicated with the front water chamber or the rear water chamber, and the water outlet end of the tube pass return tube bundle is communicated with the front water chamber or the rear water chamber. The burner is long in service life, small in high-temperature smoke resistance and airflow reflection, more environment-friendly in smoke exhaust and lower in temperature.

The invention discloses a spin lock type inner core integrated multi-stage pump without a main pressure-bearing stud. The pump mainly comprises a pump inner core and a spin lock shell, the pump inner core is detachably installed on the inner wall of the spin lock shell, the pump inner core comprises a pump shaft, a spin lock cover and a connecting cover are installed at the two ends of the pump shaft respectively, a plurality of spin lock lugs are arranged on the circumference of the spin lock cover, and a plurality of blocking pieces are arranged at an opening in the side, close to the spin lock cover, of the spin lock shell. A gap between every two blocking pieces forms a spin locking groove allowing the spin locking lug to pass through, a sliding groove is formed in the circumference of the inner wall of the spin locking shell, a through hole is formed in the outer wall of the side, close to the spin locking cover, of the spin locking shell, and the wedge-shaped locking block penetrates through the spin locking shell through the through hole and is fixed to the outer wall of the spin locking shell through a compression bolt. The pump inner core integrated assembly structure is designed, so that a system pipeline does not need to be disassembled when the pump is maintained, and only the whole pump inner core needs to be directly disassembled from the pressure-bearing shell, the field construction amount is greatly reduced, the maintenance time is shortened, and the disassembly and assembly difficulty of a pump set is simplified.

This utility model relates to the field of low-voltage switchgear technology, specifically an interlocking mechanism for a movable drawer unit and the movable drawer unit itself. The interlocking mechanism includes a position interlocking mechanism, comprising a position interlocking drive plate and a movable portion position locking plate. The movable portion position locking plate is located on the back of the movable drawer unit and is fixed to the movable portion. The position interlocking drive plate is positioned by embedding a positioning element into a corresponding position positioning hole on the movable portion position locking plate. The fixed and movable portions of the movable drawer unit are interlocked through the aforementioned interlocking mechanism. The advantages are: the interlocking mechanism has complete functions, low structural cost, small space occupation, and enables unit miniaturization; the use of T-shaped sliding columns and guide rails for push-guided limiting reduces the precision requirements of sheet metal parts processing, lowers costs, solves push-up failures, controls the upward tilting of the rear of the movable portion, and also increases the internal width of the unit.

The application discloses a self-locking and modular electric clamp jaw, and fills up the blank of the electric clamp jaw. In the compact clamp jaw shell space and without the brake, the worm and gear transmission pair is used to realize the clamp jaw mechanical self-locking and the relatively large speed reduction ratio. Meanwhile, the output shaft of the motor is adjusted to the parallel and coaxial position with the worm shaft through the multiple spur gears and bevel gears transmission pair. Most of the driving structure parts of the electric clamp jaw are wrapped in the clamp jaw shell. The modular design of the application has two types of clamp jaw heads, one is the parallel two-finger type, and the other is the three-finger rotating type. The clamp jaw head can be quickly replaced by only disassembling and assembling the screws.

The invention discloses an angular impact tool, belongs to the field of electric tools, solves the problem that an existing impact tool is not suitable for a narrow space, and adopts the technical scheme that the angular impact tool mainly comprises a shell, a driver, an impact mechanism and a gear assembly are arranged in the shell, and the driver drives the impact mechanism through the gear assembly; the impact mechanism comprises a driving shaft, a hammer and an anvil block, the end, away from the anvil block, of the driving shaft is connected with a first gear, the first gear is in transmission connection with the gear assembly, a first mounting groove is formed in the middle of the first gear, the shell is provided with a supporting piece, the supporting piece is provided with a first protrusion extending into the first mounting groove, and the peripheral side of the first protrusion is sleeved with a first bearing; the first bearing is embedded into the first mounting groove, the outer side wall of the first bearing is matched with the inner side wall of the first mounting groove, and the supporting piece covers the first mounting groove. The whole structure is more compact and can be suitable for a narrow space.

The embodiment of the utility model provides a kind of suction nozzle and road sweeper, it is related to road sweeper field.The suction nozzle is used for road sweeper, it includes suction nozzle body and rotating shaft structure, rotating shaft structure is connected in suction nozzle body, rotating shaft structure includes rotating shaft, first bearing, first rotary seat, reset piece, driving part, second bearing and second rotary seat, first bearing is sleeved in rotating shaft, first rotary seat is sleeved in first bearing, first rotary seat is connected by first bearing and rotating shaft, first rotary seat includes connecting plate, reset piece and connecting plate are connected, and reset piece is used to and water jet rod is connected, driving part and connecting plate are connected to drive connecting plate movement, second bearing is sleeved in rotating shaft, and second bearing and first bearing are up and down distribution.First rotary seat and second rotary seat form up and down structure by first bearing and second bearing, reduce the overall outline dimension of rotating shaft structure, reduce the number of bearing, simplify overall structure, realize light weight design.