144results about How to "Strong bite" patented technology

The invention discloses a valve clamping device. The valve clamping device comprises a first clamping component, a second clamping component and a fixing component. The fixing component is used for fixing the first clamping component and the second clamping component. The first clamping component comprises at least two first clamping arms. The second clamping component comprises a corresponding number of second clamping arms. A pair of clamps can be formed by each first clamping arm and the corresponding second clamping arm. The valve clamping device has the advantages that the valve clampingdevice can employ the smooth-transition top design, the high-clamping-stability clamping tooth design and the 'one-stripe-for-dualpurpose' fixing ring deign, so that damage to valves during movement of the clamping device is reduced, users capture the valves conveniently, and clamping performance is improved while damage to the valves is reduced; the overall structure of the clamping device has high machinability, and production and manufacture of factories are facilitated.

The invention relates to a ceramic housing. The ceramic housing is applied on the electronic equipment and comprises a ceramic shell and a plastic part which is molded on the ceramic shell through injection molding. Because the plastic part is combined with the ceramic shell in an injection molding manner, the plastic part is anchored on the ceramic shell, and a high combining force can be formed between the plastic part and the ceramic shell, thereby realizing no easy separation between the plastic part and the ceramic shell on the condition of an impact, and improving structure stability of the ceramic housing. The plastic part and the ceramic shell are integrally molded, thereby simplifying integral structure of the ceramic housing, realizing smaller thickness of the integral ceramic housing and improving external appearance of the ceramic housing. Furthermore the ceramic housing has advantages of realizing high injection molding speed and short ceramic housing machining period, reducing labor cost, and further reducing production cost through batch production for improving market competitiveness of the product. When the ceramic housing is utilized on electronic equipment such as mobile phone, smart watch and personal digital assistant, weight of the integral electronic equipment is reduced, and technological aesthetic feeling of the electronic equipment is improved.

A self-piercing nut has a main threaded cylinder (2) and a pilot (5) surrounding a threaded bore (3). The main cylinder has a lower end continuing to a flange (4), with the pilot (5) protruding from a central bottom of the flange so as to pierce a hole in a metal panel (11). A skirt (7) depends from the flange's periphery to serves as a seat (8) contacting the panel. An annular groove (9) is defined between the pilot (5) and skirt (7) such that the pilot is projected beyond the seat (8). The end face (6) of pilot has an outer diameter ‘B’ larger than that ‘A’ of the lower end of main cylinder (2). The outer periphery of pilot (5) is tapered to decrease its diameter inwards and to-wards the nut axis, and a corrugation (10) is formed in the outer periphery or in the inner periphery of skirt (7).

Provided is a suspended ceiling light steel subsidiary keel. Side walls on two sides of the light steel subsidiary keel are respectively provided with one groove type rib. The invention further relates to a method of assembling the light steel subsidiary keel in a special-shaped suspended ceiling. According to the method of assembling the light steel subsidiary keel in the special-shaped suspended ceiling, a connection piece is needed to be matched. Strip-shaped grooves which are matched with the groove type ribs of the light steel subsidiary keel are formed in corresponding positions of the connection piece. The connection piece is inserted into a light steel keel and the light steel subsidiary keel, is positioned through the groove type ribs and the strip-shaped grooves in an insertion-connection mode and finally fixes the light steel keel and the light steel subsidiary keel through the connection piece. Compared with a previous screw fixation mode, the suspended ceiling light steel subsidiary keel and the method of assembling the suspended ceiling light steel subsidiary keel in the special-shaped suspended ceiling are good in fixing effect, capable of improving the construction speed, free from requirements of adding spare parts and auxiliary structures, low in cost, firm in connection and free from dislocation.

The invention relates to a construction method for an unsymmetrical big-span and small-span subway tunnel, namely an excavation construction method for an unsymmetrical small-space tunnel. The excavation construction method comprises the following steps: firstly, excavating a small-span tunnel; putting an anchor rod in a clamped rock between a big-span tunnel and the small-span tunnel before the primary support of the small-span tunnel is manufactured, wherein the anchor rod has the functions of grouting and oppositely pulling; then manufacturing the primary support of the small-span tunnel; welding one end of the anchor rod with the primary support of the small-span tunnel; excavating the big-span tunnel by steps after the secondary lining of the small-span tunnel is manufactured; firstly excavating one side close to the small-span tunnel; processing and welding the other end of the anchor rod to the primary support of the big-span tunnel to form the oppositely pulling anchor rod; excavating the big-span tunnel by steps; and manufacturing secondary tunnel linings. In the excavation construction method, the clamped rock stability for excavating the small-span tunnel and the space effect of surrounding rock stress variation are considered, the oppositely pulling grouting anchor rod is used for reinforcing the clamped rock; the excavation sequence of firstly excavating the small-span tunnel and then excavating the big-span tunnel is cooperated; and the effects on stabilizing the clamped rock and controlling the support structure of the tunnel and ground sedimentation are obvious.

An artificial tooth or teeth and occlusion-controlling system(s) thereof, wherein information about the situation of occlusion in the mouth of a patient is transmitted to a computer (151) from a biting-pressure sensing element(s) (155) or film(s) incorporated in the present invention, and said computer (151) dictates control-signals to make a driving motor (152) or motors drive and adjust an occlusal surface of said patient in place so as to give a desirable, appropriate functional occlusion to said patient's comfort instantly.

The invention belongs to the technical field of waterproof materials and the paving methods thereof and specifically relates to a self-adhesive composite waterproof layer for a tunnel and a paving method of the self-adhesive composite waterproof layer. The waterproof layer is composed of a double-faced self-adhesive film polymer waterproof roll and single-rolled self-adhesive film composite non-woven cloth; the double-faced self-adhesive film polymer waterproof roll orderly comprises a bituminous adhesive layer, a polymer waterproof material layer and a self-adhesive layer from top to bottom; the single-rolled self-adhesive film composite non-woven cloth orderly comprises a self-adhesive layer, a polymer waterproof material layer and a non-woven cloth layer from top to bottom; the self-adhesive layer of the double-faced self-adhesive film polymer waterproof roll is glued with the self-adhesive layer of the single-rolled self-adhesive film composite non-woven cloth. The self-adhesive composite waterproof layer for the tunnel is used for solving the problems of waterproof plate tear and back voids of secondary lining concrete due to uneven surface of the primary support shotcrete, and the waterproof layer is securely attached on the structural surface of the primary support shotcrete and the secondary lining concrete permanently and securely in an effective and economic manner.

The invention discloses a method for preparing a microwave instant taco through sour dough and belongs to the technical field of food production. According to the method, firstly, liquid sour dough paste fermented through lactobacillus plantarum is prepared; secondly, the sour dough is taken to prepare taco dough, and the taco is prepared through the steps of fermenting, cooking and the like. According to the taco prepared through the method, the product technology can be effectively simplified, the product cost can be reduced, the amount of chemical addition agents can be decreased, the taco can be stored at least for four months at the normal temperature, the shelf expiration date of the product is effectively prolonged, the aging speed of the product is reduced, and the taco has the advantages of being nutrient, health, easy to process and the like.

The invention relates to underjaw multiposition adjusting snore-ceasing equipment. The underjaw multiposition adjusting snore-ceasing equipment comprises a palate tooth socket and a maxilla tooth socket. A titanium alloy screw is embedded into a tip end of the palate front end incisor, a titanium alloy hooking hole is embedded into the inner side of the maxilla front end incisor, and meanwhile, atitanium alloy screw hooking tip end is in contact with the titanium alloy hooking hole, so that the maxilla is supported. Mouth opening, mouth closing, and transverse motion can be easily conducted,and thus the adjustable underjaw multiposition adjusting snore-ceasing equipment is provided. The underjaw multiposition adjusting snore-ceasing equipment is simple and light in structure, is customized according to tooth forms of different patients, does not harm the teeth, is comfortable to wear, can be moved either leftwards or rightwards, and is convenient to use, and flexible to adjust.

The invention discloses an emergency safety device for car tire explosion. The safety device comprises a circular ring composed of at least two annular support bands, the adjacent ends of every two adjacent annular support bands are connected through an adjustable fastening part, and the annular support bands are installed in wheel grooves of wheel rims to be used; the radial inner surface of each support band is provided with a plurality of support cushion blocks which are evenly distributed, the inner end surface of each support cushion block is in a regular shape, and horizontal surfaces or oblique surfaces with the 10-degree oblique angles serve as the inner end surfaces; the radial outer surface of each support band is provided with a plurality of tooth-shaped engaging strips, the outer surfaces of the tooth-shaped engaging strips are provided with engaging teeth, and when the emergency safety device is used, the tooth-shaped engaging strips are closely engaged with the inner wall of a tire. According to the emergency safety device for car tire explosion, the structure is reasonable, assembling and disassembling are convenient, the tire and the wheel rims can keep synchronous running in the states of tire explosion or tire gas deficiency, the controllability of a steering and braking system is guaranteed, traffic accidents are reduced, and the traffic safety is improved.

The invention provides a joggle-joint smart shield segment. The two ends and two sides of a segment body of the joggle-joint smart shield segment are provided with tenons and mortises, and the two ends and two sides of the joggle-joint smart shield segment are provided with rapid clamping structures; a segment ring formed by two adjacent joggle-joint shield segments and a segment ring formed by one abutting shield segment are alternatively distributed in the longitudinal direction so that the adjacent joggle-joint shield segments can be rapidly fixed; the adjacent joggle-joint shield segmentsare in inserted connection through tenon joints, so that meshing between the adjacent joggle-joint shield segments is firmer, the segment rings do not easily deform, construction is convenient and efficient, the splicing efficiency of the shield segments is greatly improved, and the shield construction process is speeded up; besides, the tenons and the mortises are provided with rock bolt holes. When the shield segments are mounted, the tenons are inserted into the mortises, and rock bolts penetrate through the rock bolt holes to fix the tenons. By adopting the smart segment body, the problemsof monitoring, operating and maintaining the joggle-joint smart shield segment during operation of subways, tunnels, roadways, culverts and utility tunnels are solved, unmanned monitoring is achieved, and the informatization and intelligent degrees of underground lane-and-cave lines are improved.

The invention discloses a wood floor laying robot, and relates to the field of building machinery. The wood floor laying robot comprises a rack, a stock bin, a falling mechanism, a paving mechanism and a chassis, and the rack is mounted on the upper part of the chassis; the stock bin is mounted at the top of the rack and used for accommodating to-be-paved wood floors, and a discharging outlet is formed in the side part of the stock bin; the falling mechanism is arranged on the rack, located on the lower part of a second side part of the discharging outlet of the stock bin, and used for receiving the to-be-paved wood floors from the stock bin; and the paving mechanism is arranged on the rack, located on the lower part of the falling mechanism, and used for receiving the to-be-paved wood floors from a guiding mechanism and loading the to-be-paved wood floors into paved wood floors. The wood floor laying robot is simple in structure, the wood floors can be quickly laid, the construction site is tidy, and manpower input is lowered while the engineering quality is ensured.

The invention discloses a composite device for simultaneously realizing front traction of maxilla and orthodontic tooth three-dimensional movement. The device comprises a front tractor, a series of personalized bracket-free appliances, and traction elastic rings connecting the series of personalized bracket-free appliances and the front tractor. The device realizes three-dimensional orthodontic movement of teeth in an oral cavity by utilizing the series of personalized bracket-free appliances, and also provides supporting force for the traction elastic rings through the front tractor, so thatthe traction elastic rings generate forward elasticity which is conducted to the maxilla through the series of personalized bracket-free appliances so as to achieve the purposes of front traction of the maxilla and promotion of maxilla development of patients in the growth and development period. The device simultaneously realizes the promotion of the development of maxilla and the three-dimensional movement of orthodontic teeth of the patients in the growth and development period, thereby greatly improving the correction efficacy of osteal three dentofacial deformities of the patients in thegrowth and development period, and quickly realizing the four aims of the correction of the dentofacial deformities: beautiful appearance, function, health and stable occlusion.

The invention discloses an aluminum radiator of an improved riveting-embedding structure and a riveting method. After a riveting-embedding portion of each radiating aluminum fin is subjected to surface activation treatment, a nonporous solid blocking layer and a porous viscidity layer are attached to the surface of the riveting-embedding portion; after riveting-embedding grooves of an aluminum substrate are subjected to surface activation treatment, an aluminum oxide passivating film layer is attached to the surface of each riveting-embedding groove; and the riveting-embedding portions are in interference fit with the riveting-embedding grooves after riveting-pressing machining is conducted, clearances formed between the riveting-embedding portions and the riveting-embedding grooves are filled with the porous viscidity layers of the riveting-embedding portions after riveting-pressing deformation, and the porous viscidity layers of the riveting-embedding portions are in engaging fit with the aluminum oxide passivating film layers of the riveting-embedding grooves. According to the aluminum radiator of the improved riveting-embedding structure and the riveting method, the process is simple, riveting is firm, structure loosing or falling is not prone to occurring, and the heat conduction speed at the riveting joint is high.

The invention relates to a splicing-insertion type glass fiber reinforced plastic tray, in particular to a tray which is suitable for different dimensional specifications and bearing capacities and capable of being reused for a long time. The splicing-insertion type glass fiber reinforced plastic tray is composed of long-strip panels, beams and supporters of supporting beams, wherein the upper side of each long-strip panel is a plane; the beams are crosswise placed under the panel and clamped to the panel in parallel; the supporters of the supporting beams are fixedly clamped to the beams; and the panels, the beams and the supporters are all produced from glass fiber reinforced plastic. The splicing-insertion type glass fiber reinforced plastic tray disclosed by the invention has the advantages of high bearing capacity, long repetitive use life, high strength, water resistance, corrosion resistance, large range of applicable sizes, large range of applicable bearing capacities, easy maintenance and simplicity for installation.

The invention discloses a pin extractor, and mainly relates to the technical field of machinery. The pin extractor comprises an outer shell, wherein an inner shell is arranged inside the outer shell; an opening corresponding to the inner shell is formed in one end of the outer shell; a supporting barrel is arranged at one end, which is far away from the opening, of the inner shell; a through hole matched with the supporting hole is formed in one end, which is far away from the opening, of the outer shell; a screw rod is arranged in the supporting barrel; a handwheel is arranged at one end of the screw rod, and a supporting rod is arranged at the other end of the screw rod; a supporting block is arranged on the supporting rod; a hinge shaft is arranged on one side, which is far away from the supporting rod, of the supporting block; a first wedge-shaped chuck and a second wedge-shaped chuck are arranged on the hinge shaft; a thread sleeve is arranged on the supporting barrel in a sleeving manner; and a rotating arm is arranged on the outer wall of the thread sleeve. The pin extractor has the beneficial effect that removal of a pin from a blind hole can be quickly completed; the pin extractor is easy to operate and convenient to use; the working efficiency can be improved; and damage to a straight pin and a part for installing the straight pin can be avoided.

The invention discloses a reinforced chemical anchor bolt. The reinforced chemical anchor bolt comprises an anchor rod and an elastic anchor strip which is arranged on the front portion of the anchor rod, an installation groove or an installation hole is formed in the front portion of the anchor rod, the elastic anchor strip is positioned and arranged on the front portion of the anchor rod through an installation groove or an installation hole, the elastic anchor strip comprises a branch strip arranged outside the anchor rod, the side portion of the anchor rod is further provided with a folding groove or a folding face, the folding groove or the containing face is matched with the branch strip, the branch strip extends outwards on the side face of the anchor rod and elastically expands and is folded in the folding groove or the folding face on the side portion of the anchor rod under the action of external force, and the branch strip is folded towards the rear end of the anchor rod; during installation, due to the fact that force is exerted on the peak of the anchor rod and no force is exerted on the center of the elastic anchor strip, the elasticity of the elastic anchor strip is guaranteed; due to the fact that the branch strip of the elastic anchor strip is folded elastically during installation, the branch strip is prevented from being excessively exposed out of the anchor rod, the anchor bolt is particularly suitable for the condition that anchor eyes are small, the anchor bolt can be matched with anchor eyes with different sizes more easily, and the universality is higher.

The invention relates to a nano-wear-resistant polyurethane heel lift composite material and a preparation method. By means of nano composite technology, a polyurethane heel lift is modified, and the mechanical strength and the comprehensive performance of the materials are improved. Materials on an upper material layer A and materials on a lower material layer B are successively filled into a mould by a filling machine according to a certain time interval, are extruded by a flat vulcanizing machine at a certain pressure and a certain pressure, and are solidified into a whole to obtain the nano-wear-resistant polyurethane composite heel lift, the wear resistance and flexibility of the lower material layer B of the heel lift are improved, the upper material layer A has good hardness and strength and is stably engaged with a pinned top piece, the hydrolysis resistance, the impact strength and the like of the heel lift are further improved, the service life of the heel lift is effectively prolonged, noise generated by knocking the ground with the heel lift in use is lower, and quality in use of women's leather shoes is improved.

The invention relates to the technical field of building materials and particularly discloses a light porous artificial stone board and a preparation method thereof. The density of the artificial stone board is below 2.0 g / cm<3>, and 500 or more holes are formed in every cubic centime of the artificial stone board. The artificial stone board is prepared from tile waste, kaolin, a foamer, ore sand and glaze. The stone board is low in mass, low in density and high in strength, and has good heat preservation and insulation functions, the waste recovery ratio is larger than 40%, and the stone board belongs to environment-friendly products. The surface texture of the stone board is closer to that of natural stone. The back face of the stone board is porous and is used for outer wall wet combining, a binder can permeate into gaps, engaging force is higher, and the stone board can be firmly attached to an outer wall. In addition, the stone board is calcined at high temperature, has stable physical and chemical performance, and is not prone to weather.

The invention discloses a preparation method of a rice husk heat-insulating porous building block. The preparation method comprises the following steps: a, preparing the following raw materials in parts by weight: 1,000 parts of cement, 264 parts of modified rice husks, 4.4 parts of staple glass fiber, 30 parts of glue, 4 parts of hydrophobic aid and 514 parts of water; b, diluting the glue with water for later use, wherein the mass ratio of the glue to the water is 1:1; c, diluting the hydrophobic aid with water for later use, wherein the mass ratio of the hydrophobic aid to the water is 1:10; d, adding the residual water, the modified rice husks and the staple glass fiber into mixing equipment, and stirring and mixing; e, adding the cement into the mixing equipment and stirring; f, adding the glue which is diluted with water in the step b into the mixing equipment and stirring; g, adding the hydrophobic aid which is diluted with water in the step c into the mixing equipment and stirring; h, adding the mixture into a mold and forming; and i, after mold stripping, performing hydration reaction under the steam environment. The rice husk heat-insulating porous building block provided by the invention is light in weight and small in heat conductivity coefficient and the invention also provides the preparation method of the rice husk heat-insulating porous building block.

The invention relates to the technical field of petroleum development downhole tools, and discloses a fully-soluble bridge plug. The fully-soluble bridge plug comprises a pull rod and a shear rod, wherein the shear rod is fixedly connected to the lower end of the pull rod through at least one fastening screw, the pull rod is sleeved with a central pipe, the outer surface of the lower end of the central pipe is connected with a one-way moving cone through a locking ring, a rubber sleeve is arranged between the outer surface of the central pipe and the upper end of the cone, the lower end of thecone is connected to the pull rod through a shear pin, the lower end of the shear rod is in threaded connection with a guiding shoe, and slips capable of being connected with the cone in an insertedmode are arranged on the guiding shoe. According to the fully-soluble bridge plug, through matching of the structures formed between the slips and the guiding shoe, the slips can be evenly broken whenbeing engaged with a casing pipe, and the risk that the bridge plug is not centered in the casing pipe due to the fact that the axial positions of the slips are not uniform or the slips are broken from a certain position to form a larger notch, and finally bridge plug anchoring is unreliable is avoided.

The invention discloses a composite device for simultaneously realizing three-dimensional movement of orthodontic teeth by extending a mandible forwards. The device comprises an upper jaw series personalized bracket-free invisible appliance, a lower jaw series personalized bracket-free invisible appliance, an upper jaw fixing piece, a lower jaw fixing piece, an elastic connecting piece and a rigidconnecting piece, wherein the upper jaw fixing piece is relatively positioned in front of the lower jaw fixing piece; and the elastic connecting pieces and the rigid connecting pieces are alternatelyconnected between the upper jaw fixing piece and the lower jaw fixing piece. The composite device simultaneously realizes promotion of mandible development and three-dimensional movement of orthodontic teeth, and greatly improves the correction efficiency of dental-like maxillofacial deformity characterized by insufficient mandible development and mandible retraction in the growth and developmentperiod.

The invention discloses an efficient wire peeling device for power construction. The efficient wire peeling device comprises a moving wheel, a support frame, a work box, an inlet, a collecting box, apeeling device and a base. The moving wheel is installed on the bottom of the base. The collecting box is arranged on the base. The work box is arranged above the collecting box. The side of the workbox is fixedly connected with the base through the support frame. The side of the work box is provided with the inlet. The peeling device comprises a pedal pushing mechanism, a transmission mechanism,a synchronization device, a moving device, a rolling mechanism, a peeling mechanism, and a reset device. The efficient wire peeling device for power construction can peel a wire by a simple procedure, saves time and labor, improves work efficiency, and can generate cutting power by pedal operation, can transfer the power to the work box for cutting by the transmission mechanism. The synchronization device can ensure the cutting stability and the reset device facilitates the next cutting operation.

The invention discloses a special molding machine for automobile seat angle adjustment assembly, comprising a frame. The frame is provided with a primary forming device, an automatic assembling device and an linkage pipe station transfer device. An automatic feeding device is arranged at the upstream of the primary forming device. A discharge station is arranged at the downstream of the automatic assembling device, the linkage pipe is provided with a left inner convex ring and a right inner convex ring through the primary molding device. A left connecting plate and a right connecting plate are assembled on the automatic assembling device in a sleeving mode and a left outer convex ring and a right outer convex ring are formed on the automatic assembling device. The special molding machine does not need the welding operation, so that the left connecting plate and the right connecting plate are fixed in the left and right ends of the linkage pipe in a way similar to the riveting way, the firmness is higher, the degree of automation is high, and heat deformation of the linkage pipe is avoided. The invention also discloses a method for forming the regulating component, the forming method has the same effect as the molding machine.

The invention discloses a dispensing screw. The dispensing screw comprises a screw cap, a screw body and at least one transverse runner, wherein a concave groove is formed in the upper end surface of the screw cap; a dispensing port is formed inside the concave groove; a dispensing runner is arranged on the screw cap along the dispensing port; the concave groove is used for twisting the dispensing screw; a main body of the screw body is cylindrical; the upper end of the screw body is connected with the lower end surface of the screw cap; a vertical runner is arranged inside the screw body; one end of the vertical runner is communicated with the upper end of the screw body; the communicated end of the vertical runner is connected with the dispensing runner; each transverse runner is arranged in the screw body and is perpendicular to the vertical runner; one end of each transverse runner is communicated with the vertical runner, and the other end of each transverse runner is communicated with the side surface of the screw body. According to the invention, the internal runners are dispensed, so that stronger engaging force can be provided, and requirements for super vibration of a military notebook computer are met.

The invention relates to a steel PDC drilling bit with erosion-proof tooth cavities which is used in the field of petroleum and geological drilling. The steel PDC drilling bit with the erosion-proof teeth comprises a drilling bit body and a knife wing, wearing layers are welded on the front face and the back face of the knife wing, the tooth cavities are formed in the upper portion of the front face of the knife wing, and clad sheet cutting teeth are arranged in the tooth cavities. The steel PDC drilling bit with the erosion-proof tooth cavities is characterized in that cavity grooves are formed in the front ends of the tooth cavities along the edges of the tooth cavities, and wearing layers are welded on the cavity grooves. According to the steel PDC drilling bit with the erosion-proof tooth cavities, the erosion-proof capacity of the front portions of the tooth cavities is enhanced, and thus the service life of the steel PDC drilling bit is prolonged. Further, more welding material is coated on certain parts around the tooth cavities, the thickness of the wearing layers is decreased gradually, the wearing layers around the tooth cavities are distributed reasonably, less welding material is used, and the machining cost of the drilling bit is decreased on the premise that the erosion-proof capacity of the tooth cavities is enhanced. Further, due to the fact that slopes which incline inwards are arranged on the back of the nose part and the shoulder parts of the knife wing, the interference between the back side of rock debris and a well bottom face behind the knife wing is reduced effectively, the drilling resistance of the drilling bit is decreased, the rock breaking efficiency of the drilling bit is improved, and the mechanical drilling speed of the drilling bit is increased.

The invention discloses meshing pincers which comprise a clenching mechanism and a clamping mechanism. The clenching mechanism comprises a fixed handle (10) and a movable handle (20). The clamping mechanism comprises a fixing pincer head (60) and a movable pincer head (70) for meshing foreign matter, and the movable handle (20) and the fixed handle (10) of the clenching mechanism can open and close to drive the movable pincer head (70) and the fixed pincer head (60) of the clamping mechanism to open and close. The clenching mechanism is further provided with a locking mechanism (80) which can lock the clamping state of the movable pincer head (70) and the fixed pincer head (60) by locking the open state of the movable handle (20) and the fixed handle (10) of the clenching mechanism. The meshing pincers can be automatically locked and increase meshing force and are convenient to operate and capable of saving labor and being poured and flushed in an operation, a wound surface is small, and the pain of a patient is relieved.