42 results about "Shear mouth" patented technology

The invention discloses a cutting seedling raising method of peltate yam rhizome. The method comprises the steps of firstly, branch collecting: from last twenty days of June to last twenty days of September, the portion of the peltate yam rhizome with vine length larger than 2m is sheared down, a sheared mouth is placed in water, and sheared peltate yam rhizome is stored in a shade place; secondly, branch cutting: sheared branches are trimmed into branches with 1 to 2 complete leaves and at least one burl to be used as stump plant, the diameter of stem of the stump plant is 1mm to 2mm, and the length of the stem of the stump plant is 1cm to 8cm; thirdly, cuttage: the stump plant is horizontally inserted in a damp cutting medium, the branch is buried in the medium by 1cm to 6 cm, the leaves are exposed in the air, and cuttage density is suitable if leaves are not overlapped; fourthly, management after cuttage: temperature is maintained between 25 DEG C to 33 DEG C, and humidity is maintained between 30% to 40% when cuttage is carried out, plant growth regulating substance solution hastening rooting and forming of corms is sprayed in time during a managing and protecting period; fifthly, transplanting: after one or two months, the peltate yam rhizome after cuttage sprouts adventitious roots and new branches, a planting percent reaches more than 95%, and transplanting requirements are met.

The invention relates to a sheet taking/feeding and arranging device of an automatic sheet paver of a bulletproof helmet. A sheet taking/feeding device comprises a small sheet taking/feeding device and a large sheet taking/feeding device; an arranging means is arranged at the lower end of the large sheet taking/feeding device; and a cloth folding and gathering device is arranged on the large sheet taking/feeding device. Large and small sheets are sucked in sequence through large and small sheet suckers by vacuum, so that the stability and the reliability are achieved; the cloth folding and gathering device enables all large sheets to be accurately gathered into fixed shapes through pull wires when being moved rightly above a lower mold body, so that the accuracy and the reliability are achieved; the arranging means guarantees the consistency of upper and lower positions of the gathered sheets at adjacent two sides of all shearing mouths, and reduces the frictional resistance of an overlapped area to enable the mouth-shorn sheets to be overlapped more quickly and more accurately; and the sheet taking/feeding and arranging device is used for performing the bulletproof helmet sheet paving operation, so that the sheet paving quality is high, the operation is convenient, and the working efficiency is largely improved.

The invention discloses a pair of tweezers, which simultaneously has a clamping function and a cutting function, can clamp for a long time and is labor-saving and convenient. The tweezers are provided with a pair of blades integrated with two arm locks. Cutting edges of the two blades can form a shear mouth through opening and closing the two arm locks, so that objects can be cut, and when the arm locks are completely closed, the blades are stored between the two arm locks in a staggered manner; the opening and closing angles of the arm locks can be regulated and locked through arranging a regulating rotating shaft, so that an operator does not need to apply force to the arm locks continuously; the tail ends of the arm locks are maintained to be connected with clamping ends, so that the clamping function of the tweezers is not influenced.

The invention relates to a tool for clearing away foreign matters on power transmission lines, in particular to an integrated device for clearing away entanglements on overhead lines. According to the structural features, the integrated device for clearing away the entanglements on the overhead lines comprises a main rod, scissors, a single blade and a hooking piece. The main rod comprises an n-shaped hooking groove and a connecting rod, wherein the connecting rod is connected with one end of the n-shaped hooking groove, a guide rail distributed in the axial direction of the connecting rod is arranged at the connecting position of the connecting rod and the n-shaped hooking groove, and a sliding wheel is installed inside the guide rail. A hinging point of the scissors is located at the bottom of the n-shaped hooking groove, the shearing mouth of the scissors is downward, and one shear blade abuts against the sliding wheel. The single blade is located on the upper end surface of the n-shaped hooking groove, and the blade body of the single blade extends towards the side face from the upper end surface of the hooking groove. The hooking piece comprises a central rod and a plurality of hooks distributed in the center, the central rod is located on the upper end surface of the n-shaped hooking groove and is fixedly connected with the n-shaped hooking groove, and the connecting rod is connected with an operation insulating rod. The integrated device for clearing away the entanglements on the overhead lines has the advantages of being capable of clearing away the entanglements on the overhead lines comprehensively, safely, reliably and effectively, and easy and convenient to operate.

An inhaul cable damping support saddle belongs to the technical field of bridge support saddles. The inhaul cable damping support saddle comprises a lower saddling, an upper saddling, a first buffer plate, a middle plate, a wearing plate and a second buffer plate, and is characterized in that: the inhaul cable damping support saddle further comprises a shear bolt, inhaul cables and a pair of automatic bolt-dislocation devices, the shear bolt is arranged on the lower saddling, the first buffer plate, the middle plate, the wearing plate, the second buffer plate and the upper saddling in a penetrating way, the upper end of the shear bolt sticking out of a sixth bolt hole on the upper saddling is connected with one automatic bolt-dislocation device of a pair of automatic bolt-dislocation devices, while the lower end thereof sticking out of a first bolt hole on the lower saddling is connected with the other automatic bolt-dislocation device, a shear mouth is formed in the middle of the shear bolt, the number of the inhaul cables are four groups, one end of each group of the inhaul cable is connected with the upper saddling, and the other end thereof is connected with the lower saddling. The invention is characterized in that: the invention can consume action energy generated on a bridge when earthquake occurs and controllably amortizes the horizontal displacement between the upper saddling and the lower saddling, and can be reliably reset after the earthquake vanishes.

The invention discloses a large-caliber packaging tin manufacturing method. The method comprises the following steps that 1, an aluminum foil and a metal sheet are prepared; 2, first-time deformation forming is carried out, and a first-time deformation model blank is formed; 3, second-time deformation forming is carried out, and a second-time deformation model blank is formed; 4, third-time deformation forming is carried out, a semi-product formed a time is formed, and the semi-product is a packaging tin semi-product with a tin body and a bottom cover formed integrally; 5, shear mouth punching machining and size fine adjustment are carried out, and a second-time semi-product is formed; 6, a top cover matched with an opening of the second-time semi-product is manufactured; and 7, the turnup part of the second-time semi-product is hooked to the curve part of the top cover to form an interlocking structure, the aluminum foil is arranged at a notch of the top cover, the sealing combination is achieved by means of a bonding manner, and a large-caliber packaging tin is formed. The invention further discloses the large-caliber packaging tin. The manufacturing method is simple and reasonable in technology, and the manufactured large-caliber packaging tin is high in packaging strength, good in airtightness, good in photophobism, capable of effectively guaranteeing the performance like food safety.

The invention discloses punching synchronous burr removing equipment, belongs to the field of hardware processing, and relates to a device for removing scraps and burrs. The punching synchronous burr removing equipment comprises an upper mold and a lower mold arranged in a progressive die, and the upper mold is provided with a punch; an insert set is arranged in the lower mold, and the insert set comprises a concave mold sliding block, a sliding block pad and an oblique wedge; a punched working hole is formed in the concave mold sliding block, the upper end of the punched working hole is provided with a burr step, and the upper end face of the burr step is provided with a chamfer for removing the burrs; the punch comprises a shear mouth punch and an oblique wedge punch. The punching synchronous burr removing equipment has the advantages that the lower end of the shear mouth punch is provided with multiple mounting holes, and electromagnetic heating devices are arranged in the mounting holes; a temperature reducing channel is arranged in the burr step, and the burr step is provided with a temperature reducing medium flow-through temperature reducing channel; when punching of the workpiece is finished, the edge of the workpiece can be heated simultaneously, the temperature can be reduced quickly when the burrs are removed, and more thorough burr removal can be achieved through the heat treatment.

The invention discloses a method for improving the survival rate of forestation for a seawall-based forest belt, which comprises the following steps of: digging tree pits and applying a base fertilizer on inner and outer slopes of the seawall in February and March; selecting high-grade robinia tree seedlings, adding water and soil into a water-retaining agent and mixing into slurry before planting, dipping seedling roots in the slurry, planting while dipping, and watering enough rooting water after planting; selecting poplars with the thickness of 2 to 3cm on a green bank and shearing into cuttings with the length of 30 to 40cm, and soaking the cuttings in clear water so as to fully absorb moisture; quickly dipping the cuttings in the water-retaining agent for 3 to 5 seconds and inserting the cuttings into the tree pits, wherein the depth is that the upper shear mouth is 1cm away from the ground, and watering enough; and cutting couch grass into blocks and planting in an open space point by point. The method for improving the survival rate of forestation for the seawall-based forest belt has the advantages of making the survival rate of forestation improved to 85-96 percent and overcoming the defects that the traditional planting mode has low survival rate of forestation, slow forestation and poor protection effect. Therefore, the seawall-based forest belt has the expected disaster-resistant and windproof effects 3 to 5 years earlier.

The invention relates to a paper-cut metamaterial with an adjustable auxetic characteristic under a large stretching amount and a design method thereof, the paper-cut metamaterial is composed of a plurality of square unit cells which are arranged in order, and the plurality of unit cells are arranged in the paper-cut metamaterial in a periodic, gradient or irregular mode. Corresponding paper-cut metamaterials respectively have a uniform auxetic characteristic, a gradient auxetic characteristic and a specified non-uniform auxetic characteristic. The design method comprises the steps that firstly, a structure optimization method is adopted, out-of-plane deformation constraint is fully considered, and heuristic design of a unit cell configuration is obtained; secondly, geometric reconstruction and parameter modeling are carried out on an optimization result obtained in the above steps, and the tension and expansion characteristics under different geometric parameters are obtained; and finally, the plurality of unit cell configurations are arranged according to a specific arrangement sequence, and the paper-cut metamaterial is constructed. According to the invention, by modifying the parameters of the shear mouth, a plurality of tension and expansion characteristic change trends which can be adjusted along with the tension amount can be realized; compared with the existing paper-cut metamaterial, the metamaterial provided by the invention has obvious advantages in structural design, application range and application prospect.

The invention discloses a cutting device for a packing bag. The cutting device for the packing bag comprises a machine frame, a transmitting platform, a cutter device, a cutting shear mouth, a heat sealing device, a heat emitting base plate and extruding wheels. The transmitting platform is installed in the middle of the machine frame in an embedded mode. The cutter device and the heat sealing device are correspondingly installed on the two sides of the transmitting platform. The cutting shear mouth and the heat emitting base plate are correspondingly arranged under the cutter device and the heat sealing device. The extruding wheels are arranged on the two sides and the periphery of the machine frame, and are used for flattening metal films or plastic films which are used for making the packing bag. The cutting device for the packing bag integrates the two cutting and heat sealing processes, the setting of length and specification is realized by controlling the motor speed of the transmitting platform, and thus the repeated and tedious processes of making the packing bag are avoided.

The embodiment of the invention provides a tomato transgenic method and relates to the technical field of agricultural biotechnologies. The method can be carried out not in a sterile environment, is simple, is easy to operate and is low-cost. The method comprises the following steps: agrobacterium is activated to OD600=0.6; four lateral branches are cut off from a tomato plant which has grown for 2.5-3.5 months so as to obtain four shear mouths; the shear mouths undergo impregnation by the use of the OD600=0.6 agrobacterium at the day of shear mouth cutting; a vector for transgenosis is Pcambia3301-n, and the vector contains beta-galactosidase (GUS) reporter gene; when adventitious buds which germinate at the shear mouths grow to 6-10cm, petiolule of the adventitious buds is cut for PCR/GUS dyeing; and the petiolule is dyed to blue adventitious buds which are identified as transgenic adventitious buds, and the transgenic adventitious buds are removed so as to guarantee nutrition supply for the transgenic adventitious buds.

The invention discloses an arrangement and operation method of a medium and small-sized steel tandem rolling process accident shear. The arrangement of the process accident shear is as follows: a hot shear and a wrench shear are arranged at the rear side of a rough rolling incoming material roller bed; a flying shear is arranged at the rear part of an intermediate mill of a tandem mill; the hot shear, the wrench shear and the flying shear are in a ready mode; a shear mouth is opened, and a rolled piece can freely pass through and can enter the tandem mill to be rolled after passing through the hot shear and the wrench shear; and the rolled piece can enter a finish rolling part at the rear of the tandem mill to be rolled after passing through the intermediate mill of the tandem mill and the flying shear. With the adoption of the arrangement and operation method of the medium and small-sized steel tandem rolling process accident shear, the difficulty that the rolled piece is not easy to process in a rolling groove is solved, damage of a roller rolling groove is avoided, the material consumption is reduced, and the economic benefit of enterprises is improved.

The invention discloses an afforestation method of platycladus orientalis in a green rocky hill. The method specifically comprises the following steps that S1, firstly, seedling planting pre-treatment is carried out, wherein local high-quality strong seedlings for more than two years are adopted, during lifting of the seedlings, damage roots such as broken roots and peeled roots which have large wound surfaces and are not easy to heal can occur, the roots must be pruned, a shear mouth should be smooth during pruning, and at the same time, overlong main roots are subjected to short pruning. The provided afforestation method of the platycladus orientalis in the green rocky hill has the advantages that the survival rate of the platycladus orientalis in the green rocky hill can be greatly increased, the vegetation coverage is increased, the water and soil loss is reduced, and for limestone mountain regions with lean soil and less water, a soil water-retaining agent is utilized to effectively enhance the water-retaining property of soil, reduce the loss of soil nutrients, increase the utilization rate of water, be conductive to quickening the vegetation restoration process of the green rocky hill, promote the sustainable development and ecological protection of regional natural resources and lay a foundation for realizing the ambitious goal of clear water and green hills as soon as possible.

The invention relates to the technical field of medical treatment, in particular to a band-aid with shear mouths. When a known band-aid is pasted on an affected part, the known band-aid creases and generates a gap, water enters the band-aid along the gap when the band-aid contacts with the water, efficacy is lost, and the band-aid falls off and is not ideal. The band-aid comprises pasting cloth and ointments. The band-aid is characterized in that the pasting cloth with the shear mouths is arranged on two sides of an ointment area of the band-aid respectively and pasted respectively when in use, and crease can be greatly decreased.

The invention relates to a forming die for square pipe end part closing-in of a diagonal bar. The forming die is used for closing-in forming of the end part of a square pipe of the diagonal bar. The forming die comprises a lower punching and shearing die and an upper punching and shearing die, wherein the lower punching and shearing die comprises a cutter, the cutter comprises a body and a cutting edge which is protruded out of and is arranged on the top surface of the body, the cutting edge is arranged in the center of the top surface of the body, the cutting edge comprises a V-shaped cutting edge and two arc-shaped cutting edges, and the two arc-shaped cutting edges are connected with the V-shaped cutting edge and are respectively arranged on the two sides of the bottom of the V-shaped cutting edge; the upper punching and shearing die comprises a punching head and a punching and shearing mouth which is matched with the shape of the cutting edge; during manufacturing, the cutter stretches into the end part of the square pipe of the diagonal bar to be manufactured, and the lower punching and shearing die and the upper punching and shearing die are mutually matched to respectively form notch parts on a first side wall and a second side wall of the end part of the square pipe of the diagonal bar. The invention additionally provides a forming method for the square pipe end part closing-in of the diagonal bar by using the forming die.

The invention provides an adjustable board cutting device. The adjustable board cutting device comprises a machine base, a board sending device, a press plate alignment device and a roll shearing device, wherein the board sending device, the press plate alignment device and the roll shearing device are arranged across the machine base from a feeding inlet to a discharging outlet in sequence. The roll shearing device is composed of an upper rotary shaft and a lower rotary shaft, wherein the upper rotary shaft is sleeved with multiple upper hobs in a sliding manner, and the lower rotary shaft issleeved with multiple lower hobs in a sliding manner. Each upper hob and the corresponding lower hob are used in cooperation in a staggered manner, and a shear mouth for cutting a PCB board is formedat the position of staggered cooperation between the upper hob and the corresponding lower hob. The adjustable board cutting device is simple and reliable to use; and it is guaranteed that the PCB board cutting device can cut PCB boards of various sizes with a good cutting effect while the abrasion caused to a hob structure inside slows down, the service life of the hob structure is prolonged, the production efficiency is improved, the production yield is increased, and the production cost is reduced furthermore.

The invention relates to nail clippers capable of receiving nail scraps, which can conveniently collect the cut nail scraps without causing the cut nail scraps to splash in a random manner during thenail cutting process. The nail clippers comprise an upper body, a lower body and a pressing handle, wherein the pressing handle is arranged on a pressing handle shaft passing through an upper beam anda lower beam of the spring shears; the upper body is formed by upper curtains on both sides of the upper beam and the upper beam of the spring shears; and the lower curtains on both sides of the lower beam and the lower curtains on both sides of the lower beam of the spring shears form the lower body. The upper body and the lower body form a receiving box together with the shear mouth when the shear mouth of the spring shear is closed. The nail is inserted into the shear mouth, the handle is pressed down, the nail to be cut is cut off, and the cut nail scraps are collected in the receiving box formed by the closed upper and lower bodies and cannot be splashed out. The pressing handle is pressed, the nail clippers is moved to the place where the nail scraps are to be collected, the pressing handle is loosened, the shear mouth is opened, and the nail scraps is poured into the place where the nail scraps are to be collected.

The invention relates to the technical field of garden equipment, in particular to hand-held electric pole shears. The shears comprise a tool handle frame, a driving rotary table, a reciprocating frame, a rear tool rest, a front tool rest and a tension spring; the device is provided with a telescopic internal insertion rod, shearing can be achieved through electromotion, labor is saved, and the trimming efficiency is improved; when branches needing to be trimmed are shielded by tree branches which do not need to be trimmed, a shear mouth can avoid the tree branches which do not need to be trimmed, and the branches needing to be trimmed are trimmed. The driving rotary table is fixedly connected to the tool handle frame, the reciprocating frame is slidingly connected to the tool handle frame, the rear tool rest is hinged to the left end of the reciprocating frame, the front tool rest is hinged to the left end of the reciprocating frame, the rear end surface of the front tool rest fits the front end surface of the rear tool rest, and the tension spring is connected between the rear tool rest and the front tool rest.