20results about How to "Achieve circumferential limit" patented technology

The invention relates to a ton bag holding and clamping device and a feeding method. The ton bag holding and clamping device comprises a base and a holding claw assembly, and a plurality of first connecting bases are arranged in the circumferential direction of the base; the holding claw assemblies are movably arranged on the first connecting base, and an openable holding clamping space is formed among the multiple holding claw assemblies; the holding claw assembly comprises a hollow needle tube, the first end of the needle tube is used for being connected with an air source, the second end of the needle tube comprises a tip end of the needle tube, and the tip end points to the holding and clamping space. According to the ton bag holding and clamping device, the tip of the needle tube is inserted into the ton bag, and circumferential limiting and holding and clamping of the ton bag can be achieved; in the feeding process, air is blown into the ton bag through the needle tube, so that materials in the ton bag are fully fluidized, the flowing speed of the materials in the ton bag is increased through airflow, the materials are prevented from being clamped in the ton bag, and the material feeding efficiency is improved.

The utility model discloses a food processing placing tray which comprises a fixed tray and a movable tray, placing grooves for placing food are formed in the fixed tray and the movable tray, limiting bosses are formed on the sides, opposite to the placing grooves, of the fixed tray and the movable tray respectively, and limiting steps are formed in the positions, close to groove openings of the placing grooves, of the movable tray; a through groove is formed in the movable disc in the extending direction of the movable disc, and a first limiting column used for stretching into the through groove is detachably installed on the fixed disc so that the movable disc can be installed on the fixed disc in a limiting and sliding mode. According to the utility model, the limiting bosses are matched with the placing grooves in an inserting manner, so that the stability of the stacked packaging box is improved, the probability of toppling is reduced, and the packaging box is reliable to use; due to the fact that the movable disc and the fixed disc form the split type stacked structure, the occupied space is greatly reduced, the space utilization rate of a workshop is improved, production operation of workers is facilitated, and the production efficiency is improved.

This application discloses a rotary switch assembly, including a mounting base, a micro switch, a rotary switch, and a rotary fixing member. The micro switch is fixed to the mounting base. The rotary switch has a trigger portion and rotating holes extending through both ends along the axial direction. The rotary fixing member is fixedly connected to the mounting base and together restricts the axial displacement of the rotary switch. The rotary fixing member has a rotating shaft, which pivotally engages with the rotating holes. When the rotary switch is rotated to the trigger position, it contacts the contact of the micro switch through the trigger portion. When the rotary switch is rotated to the standby position, the trigger portion disengages from the contact of the micro switch. In this application, the rotary switch achieves flexible rotation through the pivotal engagement of the rotating holes and the rotating shaft of the rotary fixing member. The rotary fixing member and the mounting base together restrict the axial displacement of the rotary switch, avoiding axial movement during use and improving the problem of decreased tactile feedback caused by axial misalignment in traditional mechanical knobs.

The utility model relates to the technical field of pipeline assembly, and discloses a clamp for pipe group butt joint, which comprises a clamping piece body, the clamping piece body is provided with two clamping arms arranged in a U shape, and each clamping arm is provided with a clamping groove; wherein the two clamping arms can expand outwards in an elastic deformation mode and rebound to recover, at least part of the two butt joint ends can be contained in the U-shaped space of the clamping piece body in the external expansion state, and the two outer page edges are clamped in the clamping groove after rebound recovery. According to the clamp disclosed by the embodiment of the utility model, the butt joint end of the pipe group is peripherally limited through the two clamping arms, and meanwhile, the clamping groove is used for axially limiting and preventing separation of the pipeline; in addition, the clamp achieves clamping and clamping releasing operation in an elastic deformation mode, operation is fast, simple and convenient, and disassembly and assembly of the pipe sets are facilitated. The invention further discloses a pipe set, an electric heating device and a heat pump system.

The present application relates to the technical field of ship welding, and discloses a ship middle assembly robot welding device and method, which comprises a welding table for placing parts to be welded, a movable frame movably arranged on the welding table, a movable seat movably arranged on the movable frame, a sliding seat fixed to the bottom of the movable seat by a connecting frame, and a horizontal light pole in the movable frame penetrating through the sliding seat; a lifting assembly movably arranged below the sliding seat, a mechanical arm fixed to the bottom of the lifting assembly, and a welding gun arranged at the bottom end of the mechanical arm; the present application adopts a design that converts the rotary motion of the rotary driving ring into the opening and closing motion of the rotating buckle assembly, and the operator only needs to rotate the rotary driving ring, and then the buckle block can be driven to extend into or exit the annular buckle groove through the cooperation of the inclined chute and the sliding rod, so that the locking and unlocking of the mechanical arm are completed, and no additional tools are needed, and the disassembly and assembly time is shortened compared with the bolt fastening mode.

This utility model relates to the field of building construction technology, specifically a formwork fastening device for building construction, comprising: a tie rod, wherein at least two guide grooves are spaced apart circumferentially on the outer wall of the tie rod; two clamps, each clamp being movably fitted onto the tie rod, and each clamp having a guide protrusion corresponding to each guide groove; and an adjustment mechanism connected to the corresponding guide protrusion on each clamp. This utility model forms a cooperative limiting structure by providing guide grooves on the tie rod, corresponding guide protrusions on the clamps, and an adjustment mechanism driving their movement. During installation, the adjustment mechanism drives the guide protrusions to maintain a gap with the guide grooves, facilitating clamp fitting and achieving circumferential limiting through their cooperation. During locking, the adjustment mechanism drives the guide protrusions to embed into the guide grooves and fit tightly, using this adjustment to achieve axial limiting of the clamps while simultaneously enhancing the circumferential anti-rotation effect.

The utility model provides a clothes rail and a wardrobe, which comprise a hanging rod, swing arms connected to two longitudinal ends of the hanging rod, a rotating body connected to the swing arms and a rotating seat arranged on a top plate of a wardrobe body, and the rotating seat is suitable for supporting the rotating body so as to rotatably install the hanging rod in the wardrobe body. One of the rotating seat and the rotating body comprises a limiting convex tooth, the other one of the rotating seat and the rotating body comprises at least one limiting groove, the limiting convex tooth is clamped into the limiting groove to realize circumferential limiting between the rotating seat and the rotating body, and when the limiting convex tooth is clamped into at least one limiting groove, the swing arm is parallel to the top plate. Through the cooperation of the swing arm, the rotating body and the rotating seat, the clothes rail can be quickly and reliably switched between a storage state and a use state, and the space utilization rate is improved.

The invention provides a nitrogen and phosphorus removal integrated intelligent machine. The nitrogen and phosphorus removal integrated intelligent machine comprises a controller, a tank body, an oxygen-enriched micro-nano bubble water generator, a probiotic fermentation device, a water inlet pipe, a water drainage pipe, an electromagnetic valve and a water body scattering mechanism, the water scattering mechanism is connected to the upper end of the tank body, the water outlet end of the electromagnetic valve is communicated with the upper end of the tank body through a pipeline, the water outlet end of the water inlet pipe is connected with the first water inlet end of the electromagnetic valve, a first water pump is installed on the water inlet pipe, and a water outlet pipe of the oxygen-enriched micro-nano bubble water generator is communicated with the water inlet pipe located between the first water pump and the electromagnetic valve; a probiotic discharge port of the probiotic fermentation device is communicated with one side of the upper end of the tank body through a connecting pipe; one end of the drain pipe is communicated with one side of the bottom of the tank body; the inner side of the lower part of the tank body is filled with filler; according to the domestic wastewater treatment device, nitrogen and phosphorus elements in domestic wastewater can be decomposed, so that pollution to a water body of a riverway can be avoided when the domestic wastewater is discharged.

The invention discloses a power battery structure and an assembly method thereof. The power battery structure comprises a roll core, a collector plate and an insulating spacer, the collector plate comprises a welding plate part arranged on the upper side of the collector plate body in a protruding mode, and one position of the welding plate part is connected to the collector plate body through a fusing part. A first through groove and a second through groove are formed in the insulating spacer, when the insulating spacer is assembled on the collector plate main body, the welding plate part upwards passes through the first through groove and then relatively slides to the upper side of the second through groove, the two sides of the welding plate part are supported on the two sides of the insulating spacer in the second through groove, and the two ends of the fusing part are stopped by the two opposite side walls of the second through groove. When the power battery has abnormal high temperature, the fusing part can be burnt out to avoid safety risks brought to the battery. When the power battery abnormally burns out the fusing part, under the supporting and limiting effects of the insulating spacer, the safety risk caused by secondary connection after the fusing part is burnt out can be prevented.

This invention provides a one-way valve with a bidirectional limiting integral dual-valve-core structure to solve the technical problem that existing technologies have complex overall structures and long dimensions, making them difficult to adapt to large vibration dynamic environments. The invention includes a housing, a dual-valve-core assembly, a first elastic element, and a base. The dual-valve-core assembly includes a first valve core, a second valve core, and a second elastic element. The first valve core includes a first circular baffle, a first sealing ring, a first connecting post, and a valve core cylinder that slides with the base. The second valve core includes a second circular baffle, a second sealing ring, and a second connecting post. The first and second sealing rings form a first sealing structure and a second sealing structure with the housing, respectively. The second connecting post is fitted inside the first connecting post. The first elastic element is fitted outside the valve core cylinder and abuts against the first circular baffle and the base. The second elastic element is fitted outside the first connecting post and abuts against the second circular baffle and the first circular baffle. The first sealing ring has a locking groove for fitting the second sealing ring.

The utility model provides a shell steel jacket installation structure, which comprises a shell and a steel jacket body matched with a shaft hole of the shell, the shaft hole comprises a bearing end used for installing a bearing and a press-fitting end used for press-fitting the steel jacket body, and a limiting structure is arranged on the end face of the press-fitting end. The steel sleeve body is provided with a stop part matched with the limiting structure, and when the steel sleeve body is pressed into the shaft hole, the stop part is located in the limiting structure so that circumferential limiting of the shell to the steel sleeve body can be achieved. According to the utility model, the steel jacket body and the shell are in split connection design in a press fit manner, and the steel jacket body can be independently designed, such as the design processes of finish machining, plating layer addition and the like, so that the applicability and the use performance of the steel jacket body are improved; and the limiting structure is arranged on the press-fitting end face of the shaft hole of the shell, and the blocking part is correspondingly arranged on the steel sleeve body, so that circumferential limiting of the shell on the steel sleeve body is achieved, and the using firmness of the steel sleeve body is improved.

The utility model relates to the technical field of automobile pipe fittings, in particular to a brake hard pipe which comprises a hard pipe body and a hard pipe joint, the hard pipe body is provided with a conveying hole, the conveying hole penetrates from the end face of one end of the hard pipe body to the end face of the other end of the hard pipe body, and the hard pipe joint is arranged at one end of the hard pipe body and fixedly connected with the hard pipe body. A through round hole is formed in the end, away from the hard pipe body, of the hard pipe connector, a first annular groove is formed in the hole wall of the round hole, the conveying hole is communicated with the first annular groove, and a limiting part expanding outwards is arranged in the circumferential direction of the hard pipe connector. The device has the advantage of limiting the joint of the brake hard tube and the external brake master cylinder from moving circumferentially.

The invention discloses natural gas pipeline auxiliary transportation equipment which comprises a frame, the frame is in a frame shape, a supporting piece is fixedly connected to the middle of the upper side of the frame, a limiting part and a lower supporting part are arranged at the two ends of the supporting piece correspondingly, and the limiting part can automatically embrace to conduct circumferential limiting on a pipe fitting under the pressure of the pipe fitting; the invention belongs to the technical field of auxiliary transportation equipment for natural gas pipelines, and particularly relates to auxiliary transportation equipment for natural gas pipelines, which can realize automatic cohesion and circumferential limiting of pipe fittings through the matched design of a supporting piece, a limiting part and a lower supporting part, does not need additional manual operation, and is convenient to use. The problem that the pipeline is not stably fixed in the transportation process is solved.

The utility model relates to the technical field of steering wheel testing devices, in particular to a steering wheel vibration testing device which comprises a sensor, a rubber pad is fixed to the bottom end of a base, the other end of the rubber pad abuts against the surface of a steering wheel, a plurality of sets of anti-loosening grooves are formed in the surface of a nut, and an anti-loosening rod mounting groove is formed in the surface of the base. One end of a first anti-loosening rod is movably inserted into the anti-loosening rod mounting groove, a second anti-loosening rod is fixed to the other end of the first anti-loosening rod, and the second anti-loosening rod is movably inserted into one set of anti-loosening grooves; the anti-loosening device has the beneficial effects that when the nut is screwed to enable the rubber pad to be tightly attached to the surface of the steering wheel and one set of anti-loosening grooves are aligned with the second anti-loosening rod, the second anti-loosening rod extends out of the anti-loosening rod mounting groove and is inserted into the aligned anti-loosening groove, the first anti-loosening rod stays in the anti-loosening rod mounting groove, circumferential limiting of the nut is achieved, and the anti-loosening effect is good. The nut and the locking rod cannot rotate relative to each other, and thread looseness prevention between the locking rod and the nut is achieved.

The utility model discloses a circuit breaker pressure spring pin pressing and riveting tool, and belongs to the technical field of electrical equipment manufacturing, the circuit breaker pressure spring pin pressing and riveting tool comprises a rack, a positioning assembly, a limiting assembly and a pressing and riveting assembly, the positioning assembly is installed on one side of the rack, and a positioning groove is formed in the positioning assembly; the limiting assembly is arranged opposite to the positioning assembly and used for clamping and driving the insulation pull rod to move in the direction close to or away from the rivet pressing assembly, and the rivet pressing assembly is used for riveting the edge of the pressure spring pin. The positioning assembly, the limiting assembly and the press riveting assembly are used in cooperation, automatic and accurate riveting of the pressure spring pin can be achieved, the riveting efficiency of the pressure spring pin is improved, the consistency of the knocking angle and position of the pressure spring pin is guaranteed, the situation that the center of the pressure spring pin is expanded due to stress, and use is affected is effectively avoided, and the production efficiency is improved. The action reliability and the operation stability of opening and closing of the circuit breaker are improved; according to the utility model, the qualified rate of opening and closing parameters of the circuit breaker can be effectively improved, batch reworking is reduced, and the production efficiency is improved.

The utility model relates to the technical field of silicon core cutting, in particular to a gap bridge wheel, a gap bridge wheel assembly and a silicon core cutting mechanism, the gap bridge wheel comprises a main shaft, at least two driven wheels, a rolling bearing, a fixed support and a mounting sleeve, the driven wheels are rotatably connected with the main shaft through the rolling bearing, and the fixed support comprises a main shaft mounting part. A non-circular mounting hole is formed in the main shaft mounting part; the matching surface of the mounting sleeve is in interference fit with the main shaft, a first mounting part and a second mounting part are arranged on the mounting surface of the mounting sleeve, the first mounting part abuts against the rolling bearing or the driven wheel, and the second mounting part is matched with the non-circular mounting hole. According to the gap bridge wheel, the fixing support and the mounting sleeve are matched with the rolling bearing or the driven wheel to achieve circumferential limiting and axial limiting of the main shaft and axial limiting of the driven wheel, the situation that the main shaft is driven to move when the driven wheel in the gap bridge wheel rotates can be avoided, stable work of the gap bridge wheel is guaranteed, and meanwhile the service life of the main shaft is prolonged. Connecting pieces between the driven wheel and the main shaft are simplified, and the production cost is reduced.

The present invention provides a shaking head mechanism and a device having the shaking head mechanism, the shaking head mechanism comprising: a power device having a power output end for outputting rotational power; a crank-connecting rod mechanism comprising a crank and a connecting rod, one end of the crank being fixedly connected to the power output end, and one end of the connecting rod being hinged to the other end of the crank; a rotating structure being connected to the other end of the connecting rod and rotating under the drive of the connecting rod; a first constituent structure being fixedly connected to the power device; a second constituent structure being fixedly connected to the rotating structure; a rolling structure being arranged between the first constituent structure and the rotating structure and in rolling contact with at least one of the first constituent structure and the rotating structure. Since the power of the power device is transmitted to the rotating structure by means of circular motion of the crank, no shaking occurs; in addition, since the rolling structure is in rolling contact with at least one of the first constituent structure and the rotating structure, it has the characteristic of small jumping, thereby realizing stable shaking of the whole machine.

The utility model provides a fixed iron core of an electromagnetic relay, which comprises a fixed iron core body, a shaft hole is coaxially arranged in the middle of the fixed iron core body, a connecting shaft passes through the shaft hole, and the upper end of the connecting shaft is fixed with a movable iron core; an annular convex edge is arranged on the peripheral wall of the lower part of the fixed iron core body and is used for abutting against the upper end surface of a base in the relay; an annular boss is coaxially arranged on the lower end face of the fixed iron core body, the annular boss is arranged in an assembling hole in the base in a penetrating mode from top to bottom, and the annular boss is tightly attached to the hole wall of the assembling hole. A plurality of opening grooves are formed in the lower end of the annular boss in the circumferential direction of the annular boss, and riveting blocks are formed in the positions, between every two adjacent opening grooves, of the annular boss; after the riveting block is riveted by the riveting tool, the riveting block expands outwards and abuts against the lower end face of the base in the relay. According to the utility model, the fixing reliability of the fixed iron core body and the base can be improved.

The utility model provides a kind of multi-station mould, belong to mould technical field.It has solved the problem of lower forming efficiency of existing multi-station mould.The multi-station mould, including fixed mould, movable mould and main shaft, fixed mould and movable mould moulding form multiple forming cavities, main shaft passes through movable mould horizontally and can be axially slid and circumferentially rotate relative to movable mould, one end of main shaft towards fixed mould is fixed with turntable, multiple rotating plates that are evenly distributed along circumference and are in strip plate shape are connected on turntable, the end portion on one end of rotating plate is all fixed with the rotating core that is in columnar and is set along the radial direction of main shaft, fixed mould and movable mould are all set up and let the mouth of rotating plate to place the gap, the mouth wall of gap is close to the outside wall of rotating plate, movable mould is fixedly connected with reset guide pin, which is set along the axial direction of rotating plate and is set along the axial direction of main shaft, reset guide pin is set close to forming cavity.The multi-station mould can improve the forming efficiency of mould.