55results about How to "Realize axial limit" patented technology

The invention relates to a planetary pin roller lead screw, and belongs to the field of pin roller lead screw design. The planetary pin roller lead screw comprises a lead screw body, two inner gear rings, a nut, two bearing retainers, two steel wire locking rings, N pin rollers and a positioning pin. The N pin rollers are evenly distributed circumferentially on the outer wall of the lead screw body; the outer wall of the lead screw body is sleeved with the two bearing retainers; the two bearing retainers are located at the two axial ends of the pin rollers respectively; the two axial ends of the pin rollers extend into the two bearing retainers respectively; the two inner gear rings sleeve the outer walls of the two axial ends of the N pin rollers respectively; the nut sleeves the outer walls of the N pin rollers; the nut is fixedly connected with the inner gear rings through the positioning pin; and the two steel wire locking rings are arranged at the axial outer ends of the contact positions of the corresponding bearing retainers and the nut. Axial limiting is realized. The lead screw integrates characteristics of planetary gear transmission and threaded transmission, and converts the rotary motion into the linear motion.

The invention relates to the technical field of textile, in particular to a take-up roller structure, a take-up mechanism and textile equipment. The take-up roller structure comprises a rotary shaft,a baffle plate, a wire roller, a resisting assembly, a pressing assembly and a regulating mechanism, wherein the baffle plate is fixed to one end of the rotary shaft; the wire roller sleeves the rotary shaft; the resisting assembly is mounted on the rotary shaft, and abuts against the inner wall of the wire roller; the pressing assembly is mounted at one end, away from the baffle plate, of the rotary shaft; the pressing assembly is matched with the baffle plate for axially limiting the wire roller; the regulating mechanism is mounted at one end of the rotary shaft and is connected to the resisting assembly and the pressing assembly; the wire roller sleeves the rotary shaft, and one end of the wire roller abuts against the baffle plate; the regulating mechanism drives the resisting assemblyand the pressing assembly to synchronously move, so that radial limiting and axial limiting of the wire roller are realized, and therefore, connecting stability between the wire roller and the rotaryshaft is ensured, and the wire roller can be effectively prevented from rotating relative to the rotary shaft.

The invention belongs to the field of radiation oncology equipment, and discloses a supporting device of rolling wheels of a rotary rack of radiation oncology equipment. The supporting device of the rolling wheels of the rotary rack of the radiation oncology equipment comprises a supporting base and a bearing wheel supporting assembly, the bearing wheel supporting assembly comprises a supporting box body and a tapered bearing wheel rolling path assembly which is arranged on the supporting box body, the tapered bearing wheel rolling path assembly comprises two sets of tapered bearing wheel supporting units, and each set of tapered bearing wheel supporting units comprises a bearing wheel shaft, a tapered bearing wheel, a bearing wheel end cover and a box body end cover. According to the supporting device of the rolling wheels of the rotary rack of the radiation oncology equipment, the mounting difficulty of the bearing wheel shafts can be lowered by utilizing the two bearing wheel shafts to support a tapered bearing shaft; meanwhile, the two tapered bearing wheels are utilized and each tapered bearing wheel is internally provided with a self-aligning bearing, and the self-aligning function can be achieved in the mounting process; in addition, axial limitation of the rotary rack can be achieved by utilizing the tapered bearing wheels, the self-aligning bearing can only bear the radial force through force transmission, the axial force is borne by a self-aligning thrust roller bearing, and accordingly the life of the self-aligning bearing can be prolonged.

The invention discloses a hemp thread removal device of tobacco products. The device comprises an impurity removal roller way arranged in a conveying groove of a vibration conveyor, an impurity removal roller is formed through combined arrangement of thread impurity removal rollers, the thread impurity removal rollers are of split type roller structures and comprise roller bodies arranged on roller shafts in a sleeving manner and each formed through abut joint of two half roller bases, multiple discharging racks made of elastic materials are evenly distributed on the roller faces of the rollerbodies in the circumference direction, the thread impurity removal rollers are arranged on the conveying groove through the corresponding roller shafts and matched bearings, transmission gears are fixedly arranged on roller shaft ends, located on the same side, of the thread impurity removal rollers, the transmission gears are in transmission connection with a drive mechanism, the drive mechanismcomprises a driving wheel and multiple driven wheels distributed on the outer wall of the conveying groove, and the driven wheels are located between two adjacent transmission gears and are in engaged connection with the transmission gears on two sides adjacent to the driven wheels. Threads such as hemp ropes and hemp browns can be subjected to efficient impurity removal and eliminating, and thedamage to the tobacco leaves can be reduced.

A mounting method of a torsion bar component is characterized in that a mounting hole corresponding to the torsion bar component is machined in a framework of a bogie; the torsion bar component transversely penetrates through the mounting hole, and the torsion bar component is connected with the mounting hole in the form of interference fit; a stopper used for axially limiting the torsion bar component is arranged in the mounting hole; and the stopper is in contact with the torsion bar component in an abutting manner. According to the mounting method of the torsion bar component, as the torsion bar component is directly mounted on the framework, a supporting seat component in an anti-roll torsion bar system is eliminated, the structure of an anti-roll torsion bar component is simplified, the production cost is reduced, the use reliability of the torsion bar component is not affected in the case of guaranteeing that the supporting seat component is eliminated, the connection between the torsion bar component and the framework is easy to realize, the connecting mode is simpler, the labor intensity of mounting the torsion bar component on the framework can be effectively reduced, and moreover, the space occupancy rate of the a connecting structure between the torsion bar component and the framework is small, and the structural compactness of the connecting structure between the torsion bar component and the framework is high. The invention further provides a torsion bar component mounting structure.

The invention discloses a refueling check valve. The refueling check valve comprises a valve body, a valve block and a rubber sealing pad, wherein the valve block is connected with the valve body through a rotary shaft pin; a spring is arranged on the rotary shaft pin; the spring is used for pre-tightening the valve block for realizing normal close of the valve; the rubber sealing pad is arrangedon the valve block in an interference fit manner and is arranged on a sealing match surface of the valve block and the valve body; a groove is formed in the outer side of the valve body; an O-shaped sealing ring is arranged in the groove for realizing sealing between the valve body and an outer side match pipe after assembly; the match pipe which is used for being matched with the valve body is provided with an extrusion bump on the outer part of the front end; a groove is formed in the match pipe; and an expansion section is arranged on the tail pipe diameter of the match pipe, so that different pipe diameters and match needs are met. By adopting the refueling check valve, rolling over of fuel can be effectively prevented; gas rolling over is prevented; rapid changing can be realized after damage; and meanwhile, the flow diameter of fuel in a pipeline is not affected after the valve block is opened.

The invention relates to a double-disc type motor electric stepless speed change mechanical-electrical integration system. The system comprises a shell, a planet wheel, a sun wheel, an input shaft, aplanet carrier, a gear ring carrier, a gear ring, an output shaft, a hollow shaft, an ISG motor stator, an ISG motor stator, an ISG motor rotor, a main drive motor stator, a main drive motor rotor anda main drive motor stator; the ISG motor stator and the ISG motor rotor form an ISG disc type motor; the main drive motor stator and the main drive motor rotor form a main drive motor with a double-stator structure; the output shaft penetrates through the hollow shaft; supporting bearings are arranged between the front end and the rear end of the hollow shaft and the output shaft; the sun wheel,the planet wheel and the gear ring form a planet row; the ISG motor stator and the main drive motor stator are connected together and are connected with the hollow shaft through the support bearings;an ISG motor stator side shell is connected with the hollow shaft through the supporting bearing; a main drive motor stator side shell is connected with the output shaft through the supporting bearing. The system of the invention has the advantages of compact structure, high power density, high system efficiency and outstanding NVH characteristics.

The invention provides a tempering furnace material rack slideway mechanism which comprises a support, a slideway baffle and a discharging baffle, wherein two support plates of the support are respectively and fixedly arranged on two side walls of a feeding hole of a tempering furnace machine tool, a two-way screw rod and at least one guide rod are arranged between the two support plates, and the slideway baffle comprises a first baffle and a second baffle which are parallelly arranged between the two support plates; the slideway for feeding shaft workpieces is formed between the first baffle and the second baffle, the two-way screw rod and the guide rod respectively penetrate through the slideway baffle, and the first baffle and a left screw cap arranged on the two-way screw rod are fixed together; the second baffle and a right screw cap arranged on the two-way screw rod are fixed together, the first baffle and the second baffle are respectively provided with a guide sleeve matched with a guide rod, and the discharging baffle is arranged on the tail of the feeding hole; and the upper end of the discharging baffle is fixed, and a V-shaped charging groove is formed between the lower end of the discharging baffle and the tail end of a bottom plate of the feeding hole. The axial limiting and radial positioning for shaft workpieces with different lengths are realized, the tempering furnace machine tool is high in automation degree and high in working efficiency, and the production cost of shaft workpieces is low.

The invention relates to a bearing dismantling device, comprising a pull rod, a press ring and a regulating pad; the press ring is fixedly arranged in the dismantling direction of a bearing outer ring, the end surface of the press ring is matched with the that of a part provided with a bearing bush, a step arranged on the press ring is matched with the end surface of the bearing bush, the pull rod is in clearance fit with the bottom of the press ring, a disc is arranged at one end of the pull rod, the end surface of the disc is in contact with the end surface of the bearing outer ring and can move toward the dismantling direction along with the pull rod. The axial limiting of the bearing bush and the part provided with the bush during the disassembling of the bearing outer ring is realized, the bearing bush is prevented from being separated under the action of a disassembling force, the use safety is ensured, unnecessary repair or cost loss caused by replacement of a new product is reduced, and the production period is shortened.

The invention provides an engine cylinder cover plate demolding mechanism which comprises a mold frame, a sliding block, an inclined drawing rod and a driving cylinder are arranged on the mold frame, the sliding block is in sliding fit with the mold frame, and the sliding block is in linkage fit with the inclined drawing rod. The sliding block drives the first core pulling block on the inclined pulling rod to be demolded and separated from the inner wall of an outwards-protruding inclined sleeve on the engine steel cover plate; and an inclined pulling assembly is arranged on the inclined pulling rod in a sliding mode, a second core pulling block is arranged on the inclined pulling assembly, and when the inclined pulling rod slides in a core pulling mode in the direction away from the inclined sleeve, the inclined pulling assembly moves inwards in the radial direction of the inclined pulling rod, so that demolding separation of the second core pulling block and an inverted buckle on the inner wall of the inclined sleeve is achieved. The engine cylinder cover plate demolding mechanism is simple in structure, and inclined hole demolding and inverted buckle demolding of the inner wall of an inclined hole can be conducted at the same time through one driving structure.

The invention relates to an external force adjusting type and automatic residue discharging type axial powder actuated tool. The external force adjusting and automatic residue discharging type axial powder actuated tool is characterized in that a pressure relief through hole is formed in a nail pipe, an outer sleeve, a main sleeve and a force adjusting sleeve are involved, wherein a residue discharging channel is formed in the force adjusting sleeve, and silencing holes of the nail pipe communicate with a residue discharging heat dissipation hole in the outer sleeve; and when a reset spring iscompressed, the main sleeve can seal the residue discharging heat dissipation hole. According to the powder actuated tool, the nail pipe can freely rotate under external operation, and the most suitable explosive force can be obtained, meanwhile, when a reset action is carried out, functions of residue discharging and heat dissipation are realized as well, so that heat is timely dissipated, the residue debris can be discharged at any time, a residue discharging maintaining process is omitted, and residue discharging difficulty is reduced; more importantly, the temperature of parts can be effectively reduced, and serious potential safety hazards are avoided; and in addition, due to the arrangement of an anti-rotation sleeve, relative rotation between the nail pipe and the force adjusting sleeve can be effectively realized, marking is assisted, and namely the purpose of conveniently and accurately adjusting force can be achieved.

A large high-pressure oil pump cam box assembly comprises a lower box body, an upper box body, a cam shaft, a left end cover assembly, a right end cover assembly, a bearing bush assembly and the like. The box body adopts a split design, and a high-pressure oil pump mounting hole is formed in the upper box body and is used for mounting a high-pressure oil pump; a reverse thread bushing is arranged and is used for fastening the high-pressure oil pump; throttling plug screws are designed at the left end and the right end and used for controlling the amount of lubricating oil flowing into the left thrust plate and the right thrust plate. A lubricating oil channel is arranged in the box body and is used for lubricating the high-pressure oil pump, the bearing assembly, the left thrust plate and the right thrust plate; the oil tank is provided with a mixed oil return channel and is used for collecting mixed oil of the high-pressure oil pump and leading the mixed oil to the oil tank; the cam shaft supporting part adopts a sliding bearing instead of a ball bearing. Axial limiting of the cam shaft is achieved through the left thrust plate and the right thrust plate. A mechanical sealing ring is designed in the left end cover assembly and used for axial sealing of lubricating oil. The cam box assembly can meet the requirements of large oil supply amount and large load of an existing low-speed machine single-body type high-pressure oil pump on the cam box assembly.

The invention provides cleaning equipment. The cleaning equipment comprises a main equipment body, an installing mechanism used for making the top of the main equipment body cooperatively installed ona water draining port at the groove bottom of a water groove from the outer portion of the water groove, a washing mechanism installed on the main equipment body and communicated with a water supplying source through a water inlet, wherein the washing mechanism has a washing part capable of extending into the water groove through the water draining port at the groove bottom, and the washing partis used for cleaning a to-be-cleaned object in the water groove. The top of the main equipment body is cooperatively installed on the water draining port at the groove bottom of the water groove through the installing mechanism, after the decorating is completed, the main equipment body of the cleaning equipment can be directly installed at the bottom of the water groove according to the need, onthe one hand, immediate installing can be achieved, and the using is convenient, on the other hand, the main equipment body is installed at the bottom of the water groove, washing water in the water groove can be effectively and fully drained, and a good water draining effect is achieved.

The invention relates to a limiting device of a driving half axle bearing, and relates to the technical field of automobiles, the limiting device comprises a support body and a sealing plate, the support body is provided with a first arc-shaped groove with an upward opening, and one side of the first arc-shaped groove protrudes upwards in the circumferential direction of the first arc-shaped groove to form a first limiting plate; one end of the sealing plate is rotatably connected with one end of the bracket main body, and the other end is detachably connected with the bracket main body; the sealing plate is provided with a second arc-shaped groove with a downward opening, one side of the second arc-shaped groove protrudes downwards in the circumferential direction of the second arc-shaped groove to form a second limiting plate, and the second limiting plate and the first limiting plate are arranged on the two sides of the support body respectively. During use, the sealing plate is connected with the support body, the first arc-shaped groove and the second arc-shaped groove jointly form a limiting space used for limiting radial movement of the bearing, the bearing is located in the limiting space, and the first limiting plate and the second limiting plate abut against the two sides of the bearing respectively so as to limit axial movement of the bearing. The support body and the sealing plate can serve as an integral part to be subpackaged offline in advance.

The invention discloses a connecting structure, and relates to the technical field of connecting accessories. The connecting structure is used for connecting an engine front support with a vehicle frame, and comprises the following components: a front support and a connecting seat; the front support is provided with an installation part; a long hole is formed in the installation part in a penetrating manner; one end of the connecting seat is used for being connected with the vehicle frame; a protruding column is arranged at the other end of the connecting seat in a protruding mode; a first protruding block is arranged on the side wall at the end, away from the connecting seat, of the protruding column in a protruding mode; the protruding column is arranged in the long hole in a penetratingmode; and the first protruding block is matched with the hole edge of the long hole so as to axially limit the protruding column. Bolts are not needed, the requirement for assembling space is lowered, the structure is simple, and the problems that a connecting seat and a nut of an engine front support cannot be assembled and screwed, and the assembling efficiency and assembling quality are affected are solved. Besides, according to the connecting structure, when the protruding block is matched with the long hole, loosening is not easily caused under complex road conditions, and the stabilityis high.

The present invention belongs to the technical field of radiotherapy devices and also discloses a radiotherapy device rotating machine frame support eccentric type adjustment device. The radiotherapydevice rotating machine frame support eccentric type adjustment device comprises a front end support device and a rear end support device, the front end support device and the rear end support deviceboth comprise a supporting base seat and a riding wheel support component, the riding wheel support component comprises a support box body and a riding wheel roller path component, the riding wheel roller path component comprises two sets of riding wheel support units, riding wheels in the front end support device are tapered riding wheels, the rear end support device uses cylindrical riding wheels, and riding wheel shafts are all eccentric shafts. The device has a certain self-alignment function, also can realize own axial limit, can perform fine adjustment in a vertical direction after initial installation, and thus reduces errors of rotation center vertical directions of the front and rear end support devices, so that the support devices have relatively high reliability and safety, andthe adjustment device is high in adjustment precision.