31results about How to "Avoid knife jamming" patented technology

The invention relates to a multistage cutting and grinding blow-down pump. The multistage cutting and grinding blow-down pump comprises a pump body (1) and a pump shell (2) arranged on the lower side of the pump body (1); a pump shaft (3) is fixedly connected to the pump body (1) in the axial direction, the lower end of the pump shaft (3) extends out of the pump body (1), a vane wheel (4) is fixedly connected to the lower end of the pump shaft (3), and a blade fixing frame (6) is fixedly connected to the lower end of the pump shell (2); a cutting blade A (7) is arranged on the blade fixing frame (6), and a cutting blade B (8) is further installed on the blade fixing frame (6); a water inlet end (9) is arranged at the lower end of the blade fixing frame (6), a cutting and grinding disc (10) is arranged at the water inlet end (9), and a cutting blade C (12) is further arranged on the outer side of the cutting and grinding disc (10). According to the multistage cutting and grinding blow-down pump, the structural design is reasonable and novel, a multistage cutting function is achieved, and the service life of the blow-down pump can be effectively prolonged.

The invention relates to the technical field of residue conveying equipment for building construction, in particular to a building solid residue conveying device with a separation structure for building construction. The building solid residue conveying device comprises a conveying part, the conveying part comprises a support frame, the left side and the right side of the support frame are symmetrically and rotatably connected with conveying rollers, and the outer sides of the two sets of conveying rollers are sleeved with a conveying belt; and the two sets of conveying rollers are in transmission connection through a conveying belt, and the outer side of one set of conveying rollers is fixedly connected with a first servo motor. According to the building solid residue conveying device, dust particles in residues and waste are separated and flushed out through water mist flushing, the residues and waste are conveniently recycled, the middle positions of the conveying rollers are arranged to be in a concave shape, the middle position of the conveying belt is made to be concave downwards, water flow is conveniently collected and guided, the water flow is effectively prevented from overflowing at will, and in cooperation with rotary stirring of a wheel cylinder, it is guaranteed that the device comprehensively removes dust particles.

The invention discloses a harvester with a fixed type lower header and capable of uniformly crushing straws and preventing crushed straws from spattering. The harvester comprises the lower header, wherein the lower header is hinged to a front axle of the harvester; the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism and a transmission mechanism; stopping angle iron capable of preventing the crushed straws from spattering is further fixedly connected with the rear part of a stopping cover of the lower header main frame; the included angle of cutting blades on two sides of a cutting blade is 60 degrees and saw teeth are arranged on the cutting blade on each side; the straw crushing mechanism is mounted in a containing space formed by a base, the stopping cover, a first sealing plate and a second sealing plate; an adjusting gap is formed in the top of a swinging arm. The harvester with the fixed type lower header and capable of uniformly crushing the straws and preventing the crushed straws from spattering, disclosed by the invention, can be used for cutting and crushing straw parts remained after cereals are harvested; the feeding amount of the harvester is alleviated, and the loss and threshing load of a machine are reduced; cutting stubbles are low and flat, so that a land is easy to plough; positions of the cutting blades can be easily and conveniently adjusted; high efficiency of cutting the straws is guaranteed and the crushing is uniform; meanwhile, the crushed straws do not spatter.

The invention discloses a uniform straw smashing and smashed straw splattering prevention type double header linkage harvester with a ladder stand. The harvester comprises an upper header, a lower header, a linkage rod and the ladder stand. The upper header is hinged to a front axle, and the lower header is hinged to the front axle and positioned below the upper header. The upper header comprises an upper header main frame, an upper cutting mechanism, a screw, a reel and an upper header lifting mechanism. The lower header comprises a lower header main frame, a lower cutting mechanism, a straw smashing mechanism and a transmission mechanism, and a first right-angle side of a retaining angle iron is welded to the rear lower edge of a shield. The harvester has advantages that straws remained after grain harvesting can be cut and smashed, threshing load is relieved, cutting blade position can be adjusted easily and conveniently to guarantee high straw cutting efficiency and smashing uniformity, and smashed straws are prevented from splattering; the lower header is in lifting linkage with the upper header, and accordingly stubble height can be controlled while obstacles can be avoided so as to protect equipment safety, and energy saving and consumption reduction are realized; the ladder stand can be used for climbing safely and conveniently and can also serve as a safety fence.

The invention discloses a harvester with a ladder, adjustable cutting blades and a fixed lower cutting table. The harvester comprises a lower cutting table and a ladder; the lower cutting table is fixedly welded on a front axle of the harvester, and comprises a lower cutting table main frame, a lower cutting mechanism, a crushing mechanism and a transmission mechanism; the included angle between a connecting rod of the lower cutting table and the horizontal ground is 15 degrees; the included angle between the blades on both sides of the cutting blade is 60 degrees; an L-shape hinge rod is fixed on a movable cutter seat; a straight corner edge of the hinge rod is welded to the movable cutter seat; the other corner edge is hinged to an end of a swing arm connecting joint; and the top of the swing arm is provided with an adjusting gap. The harvester with the ladder, the adjustable cutting blades and the fixed lower cutting table provided by the invention can cut and crush remaining straw parts after grains are harvested, so the feeding amount of the harvester is reduced and the threshing effect is improved. The stubble is low and flat and is convenient for field ploughing; the position of the cutting blades can be easily and conveniently adjusted, so that high efficiency of cutting and crushing the straw is ensured; and the arranged ladder not only can be used for safely and conveniently climbing, but also can be used as a safety barrier.

The invention discloses a harvester with a hoisting type lower header and capable of crushing straws. The harvester comprises the lower header, wherein the lower header is hinged to a front axle of the harvester; the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism, a transmission mechanism and a lower header hoisting mechanism; the included angle of cutting blades on two sides of a cutting blade is 60 degrees; the lower header hoisting mechanism comprises a lower header hoisting oil cylinder, a lower header hoisting oil cylinder upper seat and a lower header hoisting oil cylinder lower seat; the lower header hoisting oil cylinder is a single acting cylinder. The harvester with the hoisting type lower header and capable of crushing the straws, disclosed by the invention, can be used for cutting and crushing straw parts remained after cereals are harvested; the feeding amount of the harvester is alleviated, the loss and threshing load of a machine are reduced and the threshing effect is improved; cutting stubbles are low and flat, so that a land is easy to plough; the cutting and crushing efficiency of the straws is high and the crushed straws can be directly overturned and pressed into soil in a ploughing process; the straws can also be used as a basic fertilizer after being returned to the field; the lower header can be hoisted so that the height of the cutting stubbles is controlled, obstacles can be avoided and the equipment safety can be protected.

The invention provides a rotary cutter. The rotary cutter comprises an outer needle tubing and an inner needle tubing. The rotary cutter is characterized in that a cutter notch is formed in the frontpart of the outer needle tubing; an outer needle tubing blade is arranged at the front end of the cutter notch; an inner needle tubing blade is arranged at the front end of the inner needle tubing, and has a waved shape; the wave period of the waved blade of the inner needle tubing is one or more than one; the outer needle tubing sleeves the inner needle tubing; the inner needle tubing and the outer needle tubing have a common axial lead; and the inner needle tubing rotates forward and backward around the axial lead or moves straight forward and backward along the axial lead. The rotary cuttercan be prevented from being stuck by the fact that a tissue is drawn into the crack between the inner needle tubing and the outer needle tubing since the tissue is not effectively cut, can prevent the phenomenon of tearing and damaging of the tissue since the tissue is not completely cut off, and is more endurable since the effective cutter blade length can be increased and blade consumption canbe reduced.

The invention discloses a perforated pipe deburring machine and a cutter thereof. The cutter comprises a cutter holder. At least one eccentric cutter is eccentrically hinged on the cutter holder. The perforated pipe deburring machine and the cutter thereof have the advantages that the cutter can be prevented from being blocked and the cutter is effectively prevented from being damaged.

The invention discloses a hoisting type lower header capable of crushing straws. The hoisting type lower header is hinged to a front axle of a harvester; the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism, a transmission mechanism and a lower header hoisting mechanism; the included angle of cutting blades on two sides of a cutting blade is 60 degrees and saw teeth are arranged on the cutting blade on each side; the lower header hoisting mechanism comprises a lower header hoisting oil cylinder, a lower header hoisting oil cylinder upper seat and a lower header hoisting oil cylinder lower seat; the lower header hoisting oil cylinder is a single acting cylinder. The hoisting type lower header capable of crushing the straws, disclosed by the invention, can be used for cutting and crushing straw parts remained after cereals are harvested; the feeding amount of the harvester is alleviated, the loss and threshing load of a machine are reduced and the threshing effect is improved; cutting stubbles are low and flat, so that a land is easy to plough; the cutting and crushing efficiency of the straws is high and the crushed straws can be directly overturned and pressed into soil in a ploughing process; the straws can also be used as a basic fertilizer after being returned to the field; the lower header can be hoisted so that the height of the cutting stubbles is controlled, obstacles can be avoided and the equipment safety can be protected.

The invention discloses a harvester capable of smashing straw with lifting double-cutting tables. The harvester comprises an upper cutting table and a lower table, the upper cutting table is hinged to a harvester front axle, and the lower cutting table is hinged onto the harvester front axle and located below the upper cutting table; the upper cutting table comprises an upper cutting table main rack, an upper cutting mechanism, an auger, a reel and an upper cutting table lifting mechanism, and the lower cutting table comprises a lower cutting table main rack, a lower cutting mechanism, a straw crushing mechanism, a transmission mechanism and a lower cutting table lifting mechanism. The harvester capable of smashing straw with the lifting double-cutting tables can cut and smash remaining straw parts after grain harvest, reduce the feeding amount of the harvester, reduce the machine loss and threshing load, and improve the threshing effect; the cutting height is low and cutting is flat, so that ploughing is facilitated; the cutting and smashing efficiency of the straw is high, the smashing degree is even, the smashed straw can be directly turned and pressed into soil in ploughing, and after returning to the field, the straw can be used as base fertilizer; the lower cutting table can be lifted so that the cutting height can be controlled and the obstacles can be avoided, and the safety of the harvester is guaranteed.

The invention relates to the technical field of forest fruit pretreatment, and discloses a key-type flexible cutting and rubbing device for soapberry shelling. The device comprises a frame, a flexiblefruit cutting mechanism, a flexible fruit rubbing mechanism, a feed hopper, a discharge port and a power transmission mechanism. The frame is used for installing the flexible fruit cutting mechanism,the flexible fruit rubbing mechanism, the feed hopper, the discharge port and the power transmission mechanism. The power transmission mechanism is used for providing power to the flexible fruit cutting mechanism and the flexible fruit rubbing mechanism. The flexible fruit cutting mechanism is used for carrying out flexible gap-changing cutting on soapberry fruits. The flexible fruit rubbing mechanism is used for carrying out flexible gap-changing rubbing on the cut soapberry fruits, so as to realize separation of pericarp and seeds. The device of the invention can flexibly cut and rub the soapberry fruits for peeling, thus greatly improving the peeling efficiency and quality and effectively avoiding the phenomenon of knife sticking caused by the sticky characteristics of the soapberry inthe peeling process.

The invention provides a cylindrical cutter for cutting stainless steel pipes. The cylindrical cutter comprises a hollow cylindrical cutter body, the upper periphery of the cylindrical cutter body is of a tooth-shaped structure, a cutter bit is arranged on the tooth-shaped structure of the cylindrical cutter body, and a blade of the cutter bit comprises a main front blade and an inclined blade, wherein the inclination angle of the main front blade is 35 degrees, the gradient of the inclined blade is 45 degrees, and the cutter bit is made of tungsten and cobalt. According to the invention, the cutter is of a cylindrical structure, the stainless steel pipes can be cut through the cutter bit on the tooth-shaped structure, the cutter bit is formed by combining the main front blade and the inclined blade, so that the hidden danger of shaking during the hole formation process of the stainless steel pipes is eliminated, and the phenomenon that the cutter gets jammed is avoided.

The invention discloses shearing equipment for rubber sheet processing. The shearing equipment structurally comprises a rack, a cutting mechanism, a feeding port, a conveying belt, a conveying frame,a control box and a transmission mechanism. The conveying frame is mounted in the middle of the rack. The conveying belt is arranged on the conveying frame. The cutting mechanism is arranged on the conveying belt. The feeding port is formed between the cutting mechanism and the conveying belt. The shearing equipment has the beneficial effects that pressing plates are arranged at the two sides of acutter, arc-shaped pressing strips are arranged at the bottoms of the pressing plates, the friction force between a rubber sheet and the pressing plates can be increased, and the sliding phenomenon in the cutting process is prevented; material pushing heads are mounted on the two sides of the cutter, the air flow is divided into two strands of air to enter an air bag, one stand of air flow causesthe air bag to bulge downwards, and a pushing plate presses the protruding parts on the two sides of the cutting position of the rubber sheet flat; and in addition, the other stand of air flow entersa flow dividing passage, an air blowing hole faces the cutter face, the rubber crushed material attached to a cutter body is blown down, and the phenomenon that the cutter is stuck is prevented.

The invention discloses a fixed lower header capable of uniform straw smashing. The fixed lower header is fixed on a front axle of a harvester and comprises a lower header main frame, a lower cutting mechanism, a straw smashing mechanism and a transmission mechanism, wherein the lower header main frame also comprises a fixation rod; the included angle between cutting edges on two sides of a cutting blade is 60 DEG, and sawteeth are disposed on the cutting edge of each side; the straw smashing mechanism is installed in storage space which is formed through enclosing of a base, a blocking cover, a first seal plate and a second seal plate, a chamfer is disposed on an extending end of the straw smashing blade to form a cutting edge, and the chamber is located on the outer side of the straw smashing blade; and an adjustment gap is formed in the top of a sway arm. The fixed lower header capable of the uniform straw smashing disclosed by the invention has the advantages that straw parts left after cereal reaping can be cut and smashed, so a feeding amount of the harvester can be reduced, machine losses and threshing loads are reduced, and threshing effects are enhanced; stubble cutting heights can be kept consistent, and stubble cutting is low and smooth, so ploughing becomes easy; and straw smashing is uniform.

The invention belongs to the technical field of steel slag treatment and relates to a crushing and drying all-in-one machine. The crushing and drying all-in-one machine comprises a shell, a spiral crushing cutter, an air heater and a motor; one end of the shell is communicated with the air heater; the shell is in meshed connection with a motor gear on the motor through a shell gear ring; the shell comprises a crushing cavity shell; a high-temperature-resistant thermal pipe is wrapped with the crushing cavity shell; a crushing cavity is formed between the crushing cavity shell and the high-temperature-resistant thermal pipe; the spiral crushing cutter is installed in the crushing cavity; the high-temperature-resistant thermal pipe is wrapped, so that a high-temperature air cavity can be formed; one end of the high-temperature air cavity is communicated with an air outlet of the air heater; and the shell is movably installed on a rack. The crushing cavity shell sleeves the high-temperature air cavity;steel slag is dried while being crushed; the heating area of the steel slag is increased through stirring of crushing, so that a drying effect is better; the high-temperature-resistant thermal pipe is high in heat conductivity and not prone to high-temperature deformation.

The invention discloses a harvester which has a climbing ladder, smashes straws uniformly, prevents smashed straws splashing and has lifting-type double cutting tables. The harvester has an upper cutting table, a lower cutting table and a climbing ladder, the upper cutting table is hinged onto a front axle, the lower cutting table is hinged onto the front axle and is located below the upper cutting table, the upper cutting table comprises an upper cutting table main frame, an upper cutting mechanism, an auger, a reel and an upper cutting table life mechanism, and the lower cutting table comprises a lower cutting table main frame, a lower cutting mechanism, a straw smashing mechanism, a drive mechanism and a lower cutting table lift mechanism; and a first right-angle side of a blocking angle iron is welded to the lower edge of the rear part of a blocking cover. The harvester can cut and smash the residual straws after grains are harvested, thus harvester loss and a threshing load are reduced, positions of cutting blades can be easily and conveniently adjusted, thus high efficiency of straw cutting and uniform smashing are guaranteed, and the smashed straws cannot be splashed; and the lower cutting table can be lifted, thus a stubble cutting height is controlled, obstacles can be avoided, and harvester security is protected; and the arranged climbing ladder can be used for safe and convenient climb, and can be used as a safety guard bar.

The invention relates to a self-adaptive intelligent telescopic wellbore sand scraping tool suitable for wellbore with complex structures, which mainly consists of a casing, wedge body 1, wedge body 2, knife plate, center column, two kinds of tension springs, lower joint, shunt Composed of cylinder, rotary valve plate, sensing device, etc., it is characterized in that: the knife plate has a spring groove and a wedge-shaped body two movement channels, and is fixed in the shell, and the center column inside the shell is equipped with a wedge-shaped The body is connected with a spring together; the lower joint is connected with the shell, and a shunt cylinder, a rotary valve plate, a base, a motor and a sensor are installed inside. With the help of the controllable telescopic knife plate and the intelligent feedback system, the present invention effectively avoids the practical problem of over-scraping the casing when the well bends, effectively improves the efficiency of the workover, prolongs the service life of the scraper, and reduces the risk and cost of the workover and loss.

The invention discloses a reaping machine capable of uniformly chopping straws and preventing chopped straws from splashing and having double headers. The reaping machine comprises an upper header and a lower header, wherein the upper header is hinged to a front axle of the reaping machine; the lower header is fixedly welded to the front axle of the reaping machine and is positioned below the upper header; the upper header comprises an upper header main frame, an upper cutting mechanism, an auger, a reel and an upper header lifting mechanism; the lower header comprises a lower header main frame, a lower cutting mechanism, a straw chopping mechanism and a transmission mechanism; a first right-angle side which stops angle iron is welded to the lower edge of the rear of a stopping cover; and a second right-angle side is positioned below the first right-angle side. By the reaping machine capable of uniformly chopping straws and preventing chopped straws from splashing and having the double headers, straws remaining after reaping of grains can be reaped and chopped, the feeding amount of the reaping machine is reduced, and machine loss and threshing load are reduced; stubbles are low and flat, and ploughing is facilitated; and the positioning of cutting blades can be adjusted easily and conveniently, high straw reaping efficiency and uniform chopping are ensured, and meanwhile, the chopped straws cannot be splashed.

The invention discloses a recovering and crushing device for PVC plastic production. The recovering and crushing device structurally comprises a base, a case, a plastic collecting frame, a crushing bin and a hopper, wherein the case is vertically mounted at the top of the base; the plastic collecting frame is movably mounted at the lower end of the front side of the case; the hopper is arranged atthe top of the crushing bin; and the bottom of the crushing bin is connected with the top of the case in a penetrating manner. The recovering and crushing device has the beneficial effects that cleaning mechanisms are mounted on two sides of reamers, removers on the cleaning mechanisms can clear up PVC fragment powder on blades; brush rollers are mounted in the removers, when the blades pass through blade accommodating frames, brushes on two sides can clear up powder on two sides of the blades, the brush rollers rotate inwards when being in contact with the blades, and when the brush rollerscollide with shaking devices, powder on the brushes fall into the plastic collecting frame to prevent the condition of reamer sticking due to powder accumulation.

The invention discloses a perforated pipe burr removing machine, which comprises a track car which can linearly move along tracks. A supporting arm which is in parallel with the tracks is fixedly arranged on the track car. The front end of the supporting arm is connected with a rotary driving device. A cutter is fixedly arranged on the rotary driving shaft of the rotary driving device. The perforated pipe burr removing machine has the advantages that the burr removing effect is good and the labor intensity is reduced.

The invention discloses a double-header harvester with a crawling ladder and capability of uniformly crushing straws. The harvester comprises an upper header, a lower header and the crawling ladder, the upper header is hinged onto a front axle of the harvester, the lower header is fixedly welded on the front axle of the harvester and positioned below the upper header, the upper header comprises an upper header main frame, an upper cutting mechanism, an auger, a reel and an upper header lifting mechanism, and the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism and a transmission mechanism. A chamfer is arranged at an extending end of a straw crushing blade to form a cutting edge, the chamfer is positioned on the outer side of the straw crushing blade, and an adjustment gap is formed in the top of a swing arm. The double-header harvester with the crawling ladder and capability of uniformly crushing the straws can cut and crush the straws remaining after grain harvesting, the feed quantity of the harvester is reduced, loss and the threshing load of the harvester are reduced, and threshing effects are improved. The heights of cut stubbles can be kept consistent, the cut stubbles are low and smooth, plowing is facilitated, the straws are uniformly crushed, and the crawling ladder can be used for safe and convenient climbing and can also be used as a safety fence.

The invention discloses a lifting double-header harvester with a crawling ladder and capability of crushing straws. The harvester comprises an upper header, a lower header and the crawling ladder, the upper header is hinged onto a front axle of the harvester, the lower header is hinged onto the front axle of the harvester and positioned below the upper header, the upper header comprises an upper header main frame, an upper cutting mechanism, an auger, a reel and an upper header lifting mechanism, and the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism, a transmission mechanism and a lower header lifting mechanism. The harvester can cut and crush the straws remaining after grain harvesting, the feed quantity of the harvester is reduced, cut stubbles are low and smooth, plowing is facilitated, straw cutting and crushing efficiency is high, the straws are uniformly crushed, the crushed straws can be directly turned and pressed into soil during plowing, the straws serve as base fertilizers after returning to a field, the lower header can rise and fall, so that the cutting height is controlled, obstacles can be avoided, and safety of the harvester is protected. The crawling ladder can be used for safe and convenient climbing and can also be used as a safety fence.

The invention discloses a floating head for drilling and a floating drilling device. An installing through cavity is formed in the middle portion of a bearing pedestal. A rotating bearing is arrangedin the installing through cavity. A connecting shaft is arranged in the manner of penetrating through the installing through cavity, and installed on the bearing pedestal in a rotating manner throughthe rotating bearing. A drill bit installing station is arranged at one end of the connecting shaft. An outer sleeve is arranged on the exterior of the bearing pedestal in a sleeving manner, and a preset floating gap is spaced between the inner wall of the outer sleeve and the inner wall of the bearing pedestal. The outer sleeve and the bearing pedestal are connected through a floating connectingpart. By means of the floating head for drilling, due to optimal design, the floating gap is arranged between the outer sleeve and the bearing pedestal, the outer sleeve and the bearing pedestal are connected in a cooperating manner through the floating connecting part, the connecting shaft is installed on the bearing pedestal in a rotating manner through the bearing, in the drilling process, thedrill bit rotates along with the connecting shaft, and floats in the periphery direction of the interior of the outer sleeve along with the bearing pedestal at the same time, the floating amount of the drill bit is increased greatly, the drilling efficiency is improved, and the phenomenon that due to insufficient power, a cutter gets stuck is effectively prevented. The invention further disclosesa floating drilling device.

The invention discloses a harvester with a ladder and double headers adjustable in cutting blades. The harvester comprises an upper header, a lower header and the ladder, the upper header is hinged to a harvester front axle, the lower header is fixedly welded to the harvester front axle and located below the upper header, the upper header comprises an upper header main frame, an upper cutting mechanism, an auger, a reel and an upper header lifting mechanism, and the lower header comprises a lower header main frame, a lower cutting mechanism, a straw crushing mechanism and a transmission mechanism; a lower header connecting rod forms a 15-degree included angle with the horizontal surface; an included angle of cutting edges on two sides of each cutting blade is 60 degrees; an L-shaped hinge bar is fixed to a movable blade seat. The harvester has the advantages that straw parts left after grain harvesting can be cut and crushed; and feed amount of the harvester is reduced; cut stubbles are low and flat to bring convenience to land cultivation; the cutting blades can be adjusted in position easily and conveniently, and high efficiency of straw cutting and crushing is guaranteed; the ladder arranged can be used for climbing safely and conveniently as well as used as a safety guard.

The invention discloses a milling cutter for an ultrahigh-voltage conductor, relating to the improvement on a special milling cutter structure for machining a conductor in an ultrahigh-voltage power grid. By improving the milling cutter structure, the phenomena of cutter obstruction and cutter clamping are avoided. The milling cutter is of a disc shape, two end surfaces of the disc-shaped milling cutter are conical surfaces, and a cutter tooth part is thicker than a cutter hole part. According to the invention, the structure of a common milling cutter of which the two end surfaces are planes is changed, and the two end surfaces of the milling cutter are changed into the conical surfaces specific to the characteristic that an aluminum material has a high thermal deformation coefficient. Accordingly, when the cutter is fed, the phenomena of the cutter obstruction and the cutter clamping caused by that a machined surface extrudes the end surfaces of the milling cutter can be prevented. Because the milling cutter bears a small load when the aluminum material is machined, the service life of the milling cutter cannot be shortened due to the structure, and the requirements for machining the aluminum material are completely met.

The invention relates to the technical field of forest fruit pretreatment, and discloses a key-type flexible cutting and rubbing device for soapberry shelling. The device comprises a frame, a flexiblefruit cutting mechanism, a flexible fruit rubbing mechanism, a feed hopper, a discharge port and a power transmission mechanism. The frame is used for installing the flexible fruit cutting mechanism,the flexible fruit rubbing mechanism, the feed hopper, the discharge port and the power transmission mechanism. The power transmission mechanism is used for providing power to the flexible fruit cutting mechanism and the flexible fruit rubbing mechanism. The flexible fruit cutting mechanism is used for carrying out flexible gap-changing cutting on soapberry fruits. The flexible fruit rubbing mechanism is used for carrying out flexible gap-changing rubbing on the cut soapberry fruits, so as to realize separation of pericarp and seeds. The device of the invention can flexibly cut and rub the soapberry fruits for peeling, thus greatly improving the peeling efficiency and quality and effectively avoiding the phenomenon of knife sticking caused by the sticky characteristics of the soapberry inthe peeling process.

The invention discloses a harvester with a climbing ladder and a fixed-type lower cutting table and capable of smashing straws uniformly. The harvester comprises the lower cutting table and the climbing ladder, the lower cutting table is fixed to a front axle of the harvester, and the lower cutting table comprises a lower cutting table main frame, a lower cutting mechanism, a straw smashing mechanism and a drive mechanism; the lower cutting table main frame comprises a fixed rod; an included angle of cutting edges at two sides of each cutting blade is 60 degrees, and each side of the cutting edges is provided with sawteeth; the extended end of each straw smashing blade is provided with a chamfer which is used to form a cutting edge, and each chamfer is located at the outer side of the corresponding straw smashing blade; and the top of a swing arm is provided with an adjustment gap. The harvester with the climbing ladder and the fixed-type lower cutting table and capable of smashing the straws uniformly can cut and smash the straws remained after grains are harvested, alleviates the harvester feeding quantity, reduces harvester loss and threshing load, and improves the threshing effect; the height of cut stubbles can be kept consistent, cut stubbles are low and smooth, thus land cultivation is convenient; straw smashing is uniform; and the climbing ladder arranged in the harvester can be used for safe and convenient climbing, and can be used as a safety guard bar.