40results about How to "Guaranteed not to rotate" patented technology

The invention discloses a cohesionless soil sampling apparatus. The apparatus comprises a cylindrical sampling cylinder, the sampling cylinder comprises a sampling top and a sampling bottom which are in threaded connection, the sampling bottom is provided with a fixed separation blade and a movable separation blade, the fixed separation blade is fixedly arranged on the inner wall of the sampling bottom, the movable separation blade is connected with the fixed separation blade through a center rotating shaft, the movable separation blade is positioned below the fixed separation blade, the center rotating shaft and the sampling cylinder are coaxially arranged, the top surface of the fixed separation blade is formed by two sector-shaped plates symmetrical to the center rotating shaft, the radian of each of the sector-shaped plates is 90DEG, the structure of the movable separation plate is same to the top surface of the fixed separation plate, and the top surface of the movable separation blade and the fixed separation blade are respectively vertical to the center rotating shaft. The bottom of the sampling cylinder can be conveniently closed without loss of a sampling amount, so the soil horizon sampling analysis working accuracy is improved.

The invention relates to an eight-station jack assembling machine, which comprises a jack assembling machine. The jack assembling machine is slidably arranged on a track, and a motor arranged at one end of the track drives the jack assembling machine to slide on the track through a chain belt; and the eight-station jack assembling machine further comprises a cylinder body positioning mechanism arranged at the lower part of a head of the jack assembling machine and comprising a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism have the same structure except for different frame heights, and frames with different heights are used for positioning jacks with different specifications. According to the eight-station jack assembling machine, when a vertical assembly jack is adopted, the working resistance is small, the disassembly efficiency is high, and the disassembly reliability is high; the cylinder body positioning mechanism adopts an eight-station structure, and has functions of cylinder bottom positioning and cylinder top centralization; and cylinder bottom fixation ensures that a cylinder body does not rotate in the process of guide sleeve assembly, and cylinder top centralization ensures that the cylinder body is in a vertical state in the process of movable column and guide sleeve assembly.

The invention provides a sewing machine, and belongs to the technical field of sewing. The sewing machine solves the problem that the heating and clamping phenomena are likely to happen on a guiding component between a cutter holder and a machine head of an existing sewing machine. The sewing machine comprises a machine head and a cutter holder located on the lower side of the machine head. A presser bar guiding sleeve is fixedly arranged inside the machine head. A guiding base arranged on the guiding sleeve in a sleeving mode is arranged inside the machine head. A cutter bar is fixedly arranged on the cutter holder. The upper end of the cutter bar penetrates into the machine head and is fixedly connected with the guiding base. According to the sewing machine, it is ensured that the cutter bar does not rotate and a cutter fixed to the cutter holder is operated stably. Lubricating oil for lubricating a needle bar, a presser bar and other components is contained inside the machine head of the sewing machine, obviously, the lubricating oil can also lubricate and cool a gap between the guiding base and the presser bar guiding sleeve and a gap between the cutter bar and the machine head in an auxiliary mode, the sewing machine can be operated at high speed for a long time, and it is still ensured that the guiding base and the cutter bar are operated stably. The advantage that the structure of the sewing machine is simplified is achieved due to the fact that the guiding base achieves guiding through the presser bar guiding sleeve.

The invention relates to a mechanical false stepping prevention accelerator device which comprises a main body, a fixed block, a brake pressure block, a main body bracket, a knurling pressure shaft, a fastening belt, an adjustable clamping block and a rotating device. One end of the main body bracket is fixed on an upright baffle positioned on the right side of the main body; the other end of the main body bracket is rotationally connected with the upper part of the fixed block; one end of the brake pressure block is fixedly connected with the middle part of the main body bracket and the brake pressure block and the main body are respectively positioned on both sides of the main body bracket; the knurling pressure shaft is arranged between the upright baffles on both sides of the upper part of the main body; the two ends of the knurling pressure shaft can slide along chutes; the knurling pressure shaft slides to the adjustable clamping block along the chutes to be blocked; and one end of the fastening belt is fixed on the rotating device and the other end of the fastening belt is fixedly connected with an accelerator pedal shaft. The mechanical false stepping prevention accelerator device has a simple structure, is convenient to install, has stable performance and can still implement an emergency braking effect when a driver uses an accelerator pedal as a brake pedal for carrying out emergency braking under the emergency condition so as to avoid causing a major casualty accident.

The invention discloses a marine nuclear power platform sounding device and relates to the technical field of liquid tank sounding devices. The sounding device comprises a sounding self-closing valve,a ball valve and a sounding pipe which are connected from top to bottom in sequence. The sounding self-closing valve comprises a self-closing valve seat, a plug cock, a valve shaft and a self-closingvalve handle. The self-closing valve seat is provided with a vertical through hole. The plug cock is located in the self-closing valve seat. The plug cock is provided with a first communicating hole.The two ends of the valve shaft are connected with the plug cock and the self-closing valve handle. The ball valve comprises a ball valve seat, a ball body, a valve rod and a ball valve handle. The ball valve seat is provided with a vertical through hole. The ball body is located in the ball valve seat. The ball body is provided with a second communicating hole. The two ends of the valve rod areconnected with the ball body and the ball valve handle. A sounding method comprises the steps of turning on the sounding self-closing valve, turning on the ball valve and measuring the depth. Throughthe marine nuclear power platform sounding device and the sounding method thereof, the requirement for water tightness of an opening of the upper end of the sounding pipe can be met.

The invention relates to an automatic restoring channel gate bumper which is characterized by comprising a framework, an automatic response system, an anticollision system, a variable clamping system and a safe protection system. By virtue of the design, compared with a conventional bumper, the channel gate bumper has the advantages that the channel gate bumper can avoid collision bidirectionally and restore automatically, a channel brake bar is convenient to mount and replace, and the automatic restoring channel gate bumper is good in adaptability, safe and reliable to use, good in development property and the like.

The invention discloses a pneumatic thin film performing mechanism with a built-in type anti-rotating device. The performing mechanism comprises a film cover component, a membrane, a tray, an elastic element and a push bar, wherein the membrane is fixed on the inner side of the film cover component, the tray is fixed on membrane, two ends of the elastic element are respectively connected with the film cover component and the tray, one end of the push bar is fixed on the tray, and the other end of the push bar penetrates through the film cover component and is exposed outside the film cover component. The pneumatic thin film performing mechanism is further provided with the built-in type anti-rotating device. The film cover component comprises an upper film cover, a connecting pipe and a lower film cover, wherein the upper film cover, the connecting pipe and the lower film cover are sequentially connected, and an anti-rotating guide component used for limiting a moving track of the built-in type anti-rotating device is arranged on the inner side of the connecting pipe. One end of the built-in type anti-rotating device is fixedly connected to the tray, and the other end of the built-in type anti-rotating device is connected with the anti-rotating guide component. The built-in type anti-rotating device can move along a track limited by the anti-rotating guide component. The built-in type anti-rotating device is arranged in the pneumatic thin film performing mechanism, not only is travel of the pneumatic thin film performing mechanism not affected, but also the push bar can be prevented from rotating.

The invention discloses an environment-friendly range hood for smart home. The environment-friendly range hood structurally comprises a sucking head, a communicating pipe, a control center and an equipment cabin; the sucking head is fixedly installed at the tail end of the communicating pipe in an embedded mode, the communicating pipe is installed on the outer end face of the upper side of the equipment cabin in a welded mode, the control center is embedded in the outer side end face of the equipment cabin, and the equipment cabin is embedded under the sucking head. Due to the fact that a converging opening and a supporting mechanism are arranged in a flow guiding opening, in the rotating process of a filter screen mechanism, movable clamping between the converging opening and the supporting mechanism can be formed by embedding a groove formed by the outer contour of the embedding and fixing block and a containing groove, and air can be driven into the containing groove through centrifugal force on the premise that rotation of the filter screen mechanism is not limited, the situation that when the equipment is used in a kitchen, smoke and grease particles adhere to the surface of the sucking head, and consequently the actual air sucking flow of the equipment is affected is avoided.

The invention discloses a large-diameter end cover propelling mechanism, an assembling method and press-fitting tightening equipment. The large-diameter end cover propelling mechanism comprises a press-fitting assembly and a positioning assembly, the press-fitting assembly provides propelling force to propel an end cover to enter a press-fitting end of a barrel, the press-fitting assembly comprises a press-fitting motor, a connecting screw and a screw block, one end of the connecting screw is connected with a power output shaft of the press-fitting motor, and the other end of the connecting screw is connected with the screw block; and the positioning assembly is used for fixedly connecting an end cover positioning seat and the barrel and comprises an end plate and the end cover positioning seat, the end plate is located at one end of the barrel, a through hole for the end cover and the end cover positioning seat to penetrate through is formed in the center of the end plate, and a positioning insertion block for integrally connecting the end cover positioning seat and the barrel is installed on the end plate on the outer edge of the through hole. The large-diameter end cover propelling mechanism has the advantages that the end cover can be automatically grabbed, a tool can be automatically placed, the tool can be automatically propelled and jacked, meanwhile, threaded parts can be automatically centered, automatic assembly is achieved under the condition that the coaxiality is guaranteed, manpower is reduced, the labor intensity is lowered, and therefore the working efficiency is improved.

The invention provides a novel ink-jet printer. The novel ink-jet printer comprises a first mounting plate, a bottom plate, a longitudinal traveling mechanism, a transverse traveling mechanism and a control assembly,wherein the bottom plate is arranged below the first mounting plate,the longitudinal traveling mechanism is arranged below the first mounting plate,the transverse traveling mechanism is arranged below the first mounting plate, the control assembly is arranged on one side of the longitudinal traveling mechanism. The novel ink-jet printer does not need a paper advancemechanism, so that the size is greatly reduced, the carry is convenient and the novel ink-jet printer can directly conduct parallel motion on a printing carrier, can print on carriers with any size almost, and can print on more kinds of carriers.

The invention discloses an air cylinder with a non-rotatable piston and a non-rotatable piston rod. The air cylinder comprises a cylinder block (10) and the piston rod (20) arranged in the cylinder block (10), wherein a cylindrical inner cavity (100) is formed in the cylinder block (10), the piston (30) is fixed to the piston rod (20), the outer surface of the piston is closely attached to the side wall of the inner cavity (100) of the cylinder block (10), and the cross section of the inner cavity (100) and the cross section of the piston (30) are both in the shape of a kidney-shaped hole. The air cylinder with the non-rotatable piston and the non-rotatable piston rod operates smoothly and is balanced in wear, it is guaranteed that the piston and the piston rod cannot rotate, the using requirement in specific occasions is met, and the inner wall of a barrel body can be continuously oiled for lubrication so that wear can be reduced.

The invention discloses an automatic beveling device for flame cutting, relates to the technical field of oxygen cutting processing, and solves the technical problem of high flame cutting difficulty caused by uncertain size and cutting position of a plate to be subjected to flame cutting in the prior art. In the device, a gun body clamping assembly comprises a clamping piece and a flame cutting torch arranged on the clamping piece in a penetrating mode; a transverse rotating mechanism comprises a rotating shell and a first driving assembly for driving the rotating shell to rotate; a longitudinal rotating mechanism comprises a driving shaft and a second driving assembly for driving the driving shaft to rotate; and the driving shaft is rotatably arranged on the rotating shell in a penetrating mode; and a four-bar mechanism comprises a first bar, a second bar, a third bar and a fourth bar. According to the device, the flame cutting torch is driven to rotate in one direction through the transverse rotating mechanism, and the flame cutting torch is driven to rotate in the other direction through cooperation of the driving shaft, the four-bar mechanism and the gun body clamping assembly, so that the positions of the cutting original points can be kept unchanged, software programming is well simplified, and the cutting quality and efficiency are improved.

The invention discloses a lifting point device for an embedded sleeve. A traction wheel is rotatably installed on a lifting point device body to achieve adjustment of the large lifting height, then a rotary connecting block is rotatably installed at the lower end of the lifting point device body, and a rotary connecting sleeve is rotatably connected to the lower end of the rotary connecting block. The other end of the rotary connecting sleeve is connected with one end of a lifting hook through a rotary connecting shaft, one end of the rotary connecting shaft is provided with external threads, the other end of the rotary connecting sleeve is provided with internal threads, one end of the rotary connecting shaft is connected with the other end of the rotary connecting sleeve through threads, and the other end of the rotary connecting shaft is fixedly connected with one end of the lifting hook. The rotary connecting sleeve and the rotating connecting shaft are connected through the threads to form a structure capable of extending and retracting the lifting hook in a short distance, when a heavy object is lifted, it can be guaranteed that the lifting hook does not rotate, extending and retracting are achieved through the rotary connecting sleeve, the structure is simple, installation is convenient, and the height adjusting precision of a lifting point is greatly improved; and the rotary connecting block can also rotate axially, and a multidirectional rotation angle is provided.

The invention discloses a rake lifting device of a center-drive concentrator automatically lifting a rake at a center. The existing device has a complex structure, is high-cost, has a long processingcycle, and has difficulty in lifting and lowering a main shaft. The device solves the above problem. The rake lifting device is characterized by further comprising a slewing bearing, a connection base, a rotating base, a bearing base, and a hinge support, wherein the hinge support is installed on the upper part of a lifting support, the hinge support is connected with the rotating base, the bearing base is installed at two sides of the upper plane of the rotating base, an oil cylinder body is installed on the bearing base, a piston rod of the oil cylinder is connected with an outer ring of theslewing bearing through the connection base, and the inner ring of the slewing bearing is connected with the main shaft. The slewing bearing which can bear an axial force, a radial force and a turning torque is adopted as a transition connection device, so that the structure is simplified, and the connection structure is more reliable; the rake lifting device uses fewer elements, has fewer faultpoints, has a shorter production cycle, has low processing and manufacturing cost, and is easy to maintain on site.