552results about How to "Avoid extrusion deformation" patented technology

The invention relates to the technical field of motor machining, and discloses an adjustable positioning milling fixture with uniform clamping force. The milling fixture comprises a mounting table, the top of the mounting table is fixedly connected with a connecting block, four evenly distributed sliding holes are formed in the side wall of the connecting block, the four sliding holes communicate,sliding rods are in sliding connection to the inner walls of the four sliding holes, the ends, located in the connecting block, of the four sliding rods are fixedly connected with limiting blocks, limiting grooves are formed in the inner walls of the four sliding holes, the four limiting blocks are in sliding connection with the inner walls of the four limiting grooves, the ends, outside the connecting block, of the four sliding rods are fixedly connected with a first arc clamping plate, and a transmission box is fixedly connected to the bottom of the mounting table. According to the adjustable positioning milling fixture with uniform clamping force, a motor shell is sleeved with the position between a first clamping plate and a second clamping plate, the side wall stress area of the motor shell is increased, clamping force is transmitted by two opposite directions, and when the motor shell is clamped, the shell is not prone to deforming.

A surgery fixture clip applier comprises: a body (10) which has a triggering device, the triggering device having an actuation state and a releasing state; a nippling lever (20) extending from the body and forming a twine hook (30) at the far end far away from the body; a track (23) being axially fixed at the inner cavity of the nippling lever along the nippling lever and extending to the twine hook; a bracket (21) sliding along the track, being capable of disposing at least one surgery fixture and being connected to the triggering device; a push plate (22) being arranged in the cavity formed between the bracket and the track and sliding matching the bracket, the push plate being abutted against the surgery fixture and being moving with the movement of the bracket and pushing the surgery fixture to the twine hook when being moving along the track to the twine hook, and when the bracket is returned to the body along the track, the push plate doing not return or return for a preset distance with the bracket and then stop returning. The surgery fixture clip applier is able to realize stable clip applying without deformation and stagnation, greatly reduce the technology requirement and reduce the cost.

The invention provides a method for detecting a surface oxidized scale sample of a hot rolled steel plate, aims to overcome the defects of a conventional test sample preparation method and checking method of hot rolled metal oxidized scale, and belongs to the field of back scattering image analysis of a surface layer structure of a high-temperature oxidized metal. The method specifically comprises the following steps: putting a metal sample which is oxidized at high temperature into a non-metal tube, performing cold embedding by using liquid epoxy resin and a curing agent of the liquid epoxy resin, and implementing processes such as grinding, polishing, corrosion by using a nitric acid ethanol mixed solution and surface carbon plating, so as to finally obtain a metal cross section oxidized scale sample which is applicable to observation by using a field emission electronic probe. Due to the adoption of the method, the oxidized scale sample of which metal is subjected to high-temperature oxidization is relatively easily and conveniently prepared, the loose phase of Fe2O3, Fe3O4 and FeO on an outer layer can be effectively protected by the epoxy resin in a cold state, and the surface oxidized scale can be prevented from dropping off in hot embedding. Through corrosion by using a mixed solution of nitric acid and ethanol, the structure of the surface oxidized scale and the metallographic phase of a metal substrate can be clearly revealed after corrosion, and the imaging effect can be relatively clear.

The invention provides a backlight module. The backlight module comprises a back plate, a light guide plate arranged in the back plate, and a plurality of elastic bodies mounted on the back plate, wherein the back plate includes a bottom plate, and a plurality of side plates vertically connected at the periphery of the bottom plate; the light guide plate includes a bottom surface facing the bottom plate, a top surface away from the bottom plate, and a plurality of side surfaces connected between the bottom surface and the top surface; the plurality of elastic bodies are respectively mounted on the three side plates of the back plate, and butt against the three side surfaces of the light guide plate; and the contact surface between the elastic bodies and the side surfaces of the light guide plate is an arc-shaped surface or a spherical surface. The backlight module provided by the invention can ensure the mechanical strength of the light guide plate by fixing the light guide plate in the back plate through the elastic bodies between the side plates of the back plate and the light guide plate without processing the periphery of the light guide plate by grooving, embossing and so on, and can supply a certain buffer space to prevent extrusion deformation of the light guide plate due to thermal expansion in the prior art, thereby ensuring the luminous intensity and uniformity and reducing the cost.

The invention discloses a package bag secondary automatic packaging system, which comprises a secondary packaging automatic bag arranging mechanism, a secondary packing machine bag collecting cabin, a secondary packaging machine bag taking and bag opening mechanism, a secondary packaging machine bag storing mechanism, a secondary packaging machine bag supporting mechanism, a secondary packaging machine bag opening shaping and hot sealing mechanism and a secondary packaging machine bag dragging and bag holding mechanism. The package bag secondary automatic packaging system has the advantages that the automatic bag arranging, bag taking and bag conveying positions are accurate, the packaging stability is greatly improved, and the whole packaging system adopts a plurality of sensors, so the work efficiency is greatly improved, the work intensity of workers is reduced, and in addition, the installation performance is greatly enhanced.

The embodiment of the invention discloses a large-scale glass fiber reinforced plastic tank and a forming die, a manufacturing equipment and a manufacturing method thereof. The forming die comprises a main shaft, at least three dynamic templates arranged on the main shaft and around the main shaft, traction mechanisms driving radial back and forth stretching of the dynamic templates relative to the main shaft, and cover templates arranged on the two ends of the main shaft, the dynamic templates are connected to the main shaft by separate dynamic templates, when the dynamic templates are extended to a certain length, the dynamic templates and the cover templates abut and together encircle to form a straight tubular die cavity with two ends sealed, and the outer side wall of the die cavity is provided with a plurality of reinforcing rib grooves. Through the implementation way, the large-scale glass fiber reinforced plastic tank which is provided with covers at the two ends and is prepared from reinforcing ribs and a glass fiber reinforced plastic tank by integrated forming can be conveniently prepared, has good tightness, and is convenient to demould.

The invention relates to a square steel core filling inner sleeve and opposing screw bolt splicing joint and a construction method of the splicing joint. The joint comprises an upper section square steel pipe, a lower section square steel pipe, a core filling inner sleeve and opposing screw bolts, wherein the core filling inner sleeve and the opposing screw bolts are connected between the upper section square steel pipe and the lower section square steel pipe, the core filling inner sleeve is in a rectangular cylinder shape, concrete is filled inside a tube body, the upper half part of the core filling inner sleeve penetrates through a longitudinal supper section screw bolt and a transverse upper section screw bolt in mutual staggered arranged at top and bottom, and the number of the opposing screw bolts is identical to the number of screw bolt holes arranged on the core filling inner sleeve. The joint rigidity is high, the operation is simple and convenient, the construction speed is high, and compared with the traditional lug plate and flange connection, the joint and the construction method have the advantages that the projected size is greatly reduced, and the design and the installation of adjacent components are convenient. The concrete is also filled in the inner sleeve, the huge pressure transferred by the steel pipe wall can be born, and the inner wall deformation caused by screw cap and screw bolt extrusion is prevented.

The invention discloses a five-axis linkage simulation machining method of a dental prosthesis, which comprises the following steps: firstly, carrying out automatic identification and extraction on the characteristic surfaces of the tips, iliac crests, nests and grooves of the dental prosthesis; then, determining the machining tool path of five-axis linkage high-speed milling according to the original appearance of the occlusal surface of an offending tooth and the changing rule of the normal vectors of all points on each characteristic surface; and finally moving a micro-diameter ball-head cutter under the command of spline interpolation machining numerical control codes along the machining tool path to obtain the dental prosthesis by milling. The simulation machining method of the invention solves the problems of low machining accuracy, poor machining pattern, long manufacturing period, poor occlusion function and easy detention of meal residue of the existing dental prosthesis, improves the machining speed and accuracy of the dental prosthesis, and effectively reduces the manufacturing cost.

The invention provides a wiring mechanism and a refrigerator. A refrigerator body of the refrigerator is provided with a compartment with a forward opening, a drawer type door body can move in the front-back direction so as to open or close the compartment, and an electrical component is arranged on the drawer type door body; and the wiring mechanism comprises a cable used for supplying power forthe electrical component and a drag chain for containing a part of the cable, one end of the drag chain is fixed to the interior of the compartment, the wiring mechanism further comprises a supportingframe fixed to the rear side of the drawer type door body, and a fixing box fixed on the supporting frame, the fixing box is provided with a first inserting port, and the other end of the drag chainis inserted into the first inserting port. According to the wiring mechanism and the refrigerator, cable deformation and damage can be effectively avoided through the drag chain, the stable electricalconnection between the drawer type door body and the compartment is guaranteed, moreover, the fixing box provided with the first inserting port is fixedly arranged on the supporting frame, so that inserting installation of the drag chain is realized, the assembly is more convenient and faster, and working is reliable.

The invention relates to a preparation method of hollow polyester fiber with controllable hollowness. In the method, two screw extruders are used for respectively feeding materials for a cover / core spinneret plate assembly, a cover layer which is made of polyester and water-solubility polyester and a core layer which is water-solubility polyester are melted in a certain proportion for composite spinning, and then postprocessing processes are carried out to prepare polyester staple fiber; and fabric made of the obtained fiber is treated with an alkaline solution to remove the water-solubility polyester from the core layer and the cover layer, and thus the fiber is of a hollow structure, and lots of micropores, trenches and through holes are formed on inner and outer surfaces of the fiber at the same time. Since hollow holes are formed after the core layer is removed through melting, deformation of hollow holes, caused by extrusion in a stretching process in the preparation of hollow fiber spun with a profile hole spinneret plate spinning method, can be avoided, and hollowness is reduced; and moreover, through the change of the proportion of raw materials for spinning, the polyester fiber with controllable hollowness being 5-75% is prepared.

The invention discloses a drop resisting and shock absorption double-layer suitcase which comprises a first case body, wherein a lifting handle is arranged at the top end of the first case body; a piece of covering cloth and a second case body are arranged in the first case body; the covering cloth is located between the first case body and the second case body; the periphery of the covering cloth is fixed on the inner wall of the first case body; two spring devices are arranged on each of two sides and the bottom end of the second case body; the spring devices comprise springs and spring seats; two ends of the springs are connected with the spring seats; one end of each spring device is fixed on the inner wall of the first case body, and the other end of each spring device is fixed on the side wall, away from the second case body, of the covering cloth; a buffering block is arranged between the two spring devices on the same side. The drop resisting and shock absorption double-layer suitcase is compact in structure, attractive in appearance, low in cost and convenient to use, can be widely used by chip manufacturing enterprises, office staff and scientific and technical workers, and can be used for protecting fragile objects such as silicon wafers or organic glass and further protecting precision instruments and the like.

The invention provides an automobile fire extinguisher accommodating case comprising a rack, a wear-resistant plate, a damping plate, a bandage, a front plate and a base plate. The rack is formed by a left side plate, a right side plate, a back plate and a strong magnetic bar; the front ends of the left side plate and the right side plate are fixed to the back end surfaces of the front plate; the back ends of the left side plate and the right side plate are fixed to the front end surface of the back plate; the strong magnetic bar and the back plate are installed together; and the front ends of the left side plate, the right side plate, the back plate and the front plate are respectively fixed to the upper end surface of the base plate. The automobile fire extinguisher accommodating case possesses rational and compact structure and is convenient to use; the extrusion deformation and wear to the fire extinguisher due to automobile body shakes can be prevented by the use of the wear-resistant plate, the damping plate and the inclined placing method; screw fastening is avoided, so damages to the automobile interior can be prevented; the fire extinguisher can be simply installed and conveniently used; and protection to the fire extinguisher can be enhanced.

The invention discloses a thin-walled tube friction welding anti-pinching supporting piece convenient to adjust, and relates to the technical field of friction welding. The thin-walled tube friction welding anti-pinching supporting piece comprises a base and a fixing clamp mechanism, a first electric push rod is arranged at one end of the top end of the base, and a fixing column is arranged at thetop end of the base in the output end direction of the first electric push rod. The fixing clamp mechanism is located at the end, away from the first electric push rod, of the fixing column, and thefixing column is connected with a limiting sliding rail. By arranging a second motor, a rotating block, a first hinge base, a transmission rod, a second hinge base, a limiting connecting rod, a resetspring and an outer wall clamping block, rapid clamping of the outer wall of a pipeline is achieved, and the rotating block can be driven by the second motor to rotate; and transmission is conducted through a transmission structure composed of the first hinge base, the transmission rod, the second hinge base and the limiting connecting rod so that the outer wall clamping block can conduct contracting and expanding movement, and then the outer wall of the pipeline can be clamped and separated.

The invention discloses a large-sized glass fiber reinforced plastic shaping mold and a manufacturing method of the mold. The mold comprises an inner support body, at least one fixed mold plate, at least three moving mold plates and a traction mechanism, wherein the fixed mold plate and the moving mold plates are arranged on the inner support body around the inner support body; the traction mechanism is used for driving the moving mold plates to move forwards and backwards relative to the inner support body; the fixed mold plate is relatively fixed with the inner support body; the fixed mold plate and the moving mold plates surround together to form a straight cylindrical mold core; and a plurality of reinforcing rib grooves are arranged in an outer side wall of the mold core. By utilizing the die, a glass fiber reinforced plastic tank can be conveniently formed by integrally molding reinforcing ribs and a tank body, with convenience in demolding; the manufacturing method comprises the following steps: adhering sealing adhesive, feeding a demolding agent, winding and shaping, curing and fixing the shape, putting into a support trolley, shrinking the mold, putting into a demolding device, dissociating the tank body and taking out the tank body. By utilizing the manufacturing method, the glass fiber reinforced plastic tank body can be conveniently formed by integrally shaping the reinforcing ribs and the tank body, and the demolding is convenient.

The headlight (1) has a housing (3) having a light exit opening, and a transparent cover plate (8) for covering the light exit opening. The ventilation opening (2) and vent (4) are arranged in the housing. The housing is provided with a hollow structure containing air inlet (13), air outlet (14) and a dimensionally stable pipe section arranged between air inlet and air outlet. The hollow structure is configured to guide the air stream flowing from ventilation opening to the vent within the housing.

The invention relates to the field of automobiles and provides an impact protection structure for a battery pack and an automobile. The impact protection structure comprises a battery pack storage space used for placing a battery pack and two longitudinal protection beams located on two outer sides of the battery pack storage space in the transverse direction, wherein the longitudinal protection beams extend in the longitudinal direction of the battery pack storage space and exceed the longitudinal outer end of the battery pack storage space; a primary anti-collision mechanism located on the outer side of the longitudinal outer end of the battery pack storage space is mounted on the longitudinal protection beams; a secondary anti-collision mechanism located between the primary anti-collision mechanism and the battery pack storage space is further mounted on the longitudinal protection beams. The automobile comprises the impact protection structure for the battery pack. The impact protection structure for the battery pack can better absorb energy after being collided to better protect the battery pack and to effectively reduce breakage of the battery pack, caused by squeezing deformation, or the probability of squeezing to damage peripheral components.

The invention discloses a preparation device of a saturated remolded clay cutting ring sample and an application method thereof, which belong to the field of geotechnical test research. The preparation device mainly comprises a sampling cylinder, a cutting ring, a loading mechanism and a water channel. The sampling barrel is a half-and-half cylinder; two cylinder sheets are assembled through a clamp hoop. During a jointing part of the cylinder sheets, a groove is formed in the side face of the cylinder sheet on one side, and a rubber strip is arranged in the groove, so that a joint is ensuredto be impermeable after being jointed. A cutting ring positioning slot is formed in an inner wall of the sampling cylinder and can be used for placing multiple cutting rings; a backing ring is arranged between each two adjacent cutting rings. A drainage hole is formed in the lower part of the sampling cylinder, and is internally and sequentially provided with permeable stones, filter paper, mud, filter paper, permeable stones and a pressurizing plate; the pressurizing plate is provided with a through hole. The sampling cylinder is placed in the water channel, and water covers the sampling cylinder. The loading mechanism utilizes a lever for pressurizing the pressurizing plate. The device can be used for preparing multiple saturated remolded clay cutting ring samples with different sizes atone time, and is fast and high-efficient.

The invention discloses a cigarette packet conveying buffer device and a cigarette packet conveying buffer method and a cigarette making machine. The cigarette packet conveying buffer device comprises two conveying belts (5 and 5') which are arranged oppositely in parallel, wherein the distance between the two conveying belts is smaller than the width of a cigarette packet; a cigarette packet running detector (7) is arranged on the downstream of cigarette packet conveying; the linear speed of the running of the conveying belts (5 and 5') is equal to that of a cigarette packet conveying channel (2) in the running state of the cigarette packet conveying channel (2); the cigarette packet is conveyed between the two conveying belts (5 and 5'); a control device controls driving motors (6 and 6') to stop running in the state of receiving a conveying abnormal signal sent by the cigarette packet running detector (7); and the conveying of the cigarette packet and the subsequent cigarette packets is blocked by frictional force between the cigarette packet and the two conveying belts (5 and 5'). According to the cigarette packet conveying buffer device and the cigarette packet conveying buffer method and the cigarette making machine, the extrusion force of the cigarette packets on the cigarette packet conveying channel is reduced, the quality defects of extrusion deformation of the cigarette packets and head retraction of cigarettes are prevented, and the production efficiency can be improved.

The invention relates to a winding type liquid cooling pipeline and a cell-to-pack battery pack. According to the winding type liquid cooling pipeline and the cell-to-pack battery pack, a continuous S-shaped bent liquid cooling plate is adopted to wind battery cells, the contact area between the S-shaped bent liquid cooling plate and the battery cells is increased, and rapid heat dissipation is realized; a cooling liquid circulates in the S-shaped bent liquid cooling plate more smoothly and straightly, backflow is not needed, and heat exchange between the cooling liquid and the battery cells is more uniform; the S-shaped bent liquid cooling plate can position and fix the battery cells; partition plates are arranged, so that the bottoms of the battery cells can be positioned, the transversemovement of the battery cells is prevented, and the liquid cooling plate can be supported; the liquid cooling plate adopts a hollow structural design, is made of a special material, and can buffer the expansion of the battery cells, so that the battery cells are prevented from extruding and deforming a lower box body, or the displacement of the battery cells can be avoided. According to the battery pack disclosed by the invention, an additional bracket and connecting piece for fixing the single battery cells are not needed, so that the battery pack is convenient and quick to assemble; the heat dissipation efficiency of the battery pack is high; and energy density can be effectively improved.

The invention discloses a locking nut, comprising a hexagon nut body, an annular boss, a nylon ring, a flange gasket, anti-loosening elastic pieces and adjusting screws, wherein the upper end surfaceof the hexagon nut body is provided with the annular boss, the annular boss is provided with a mounting ring groove, the nylon ring is embedded in the mounting ring groove, the center line of the hexagon nut body is provided with a central threaded hole, the lower end face of the hexagon nut body is connected with the flange gasket, the lower end face of the flange gasket is provided with a plurality of containing grooves, the anti-loosening elastic pieces are arranged in the containing grooves, and the adjusting screws are installed on the side wall of the hexagon nut body. The adjusting screws cooperate with the anti-loosening elastic pieces, the multiple adjustable anti-loosening elastic pieces are arranged under the flange gasket, so that the locking reliability is ensured, and the locking nut is especially suitable for the uneven fastening situation of the fastening end face, and the resilience force to the bolt is generated by extruding deformation of the threads of the bolt to the nylon ring, so that the problems of loosening and slipping off under the condition of vibration can be effectively solved.

The invention discloses a pet feed drying device. The pet feed drying device comprises a hopper, a box body, a heating plate, a fan and electric heating sheets, wherein the position, close to the leftend, of the upper surface of the box body is equipped with the hopper; the inner side of the box body is transversely equipped with the heating plate; the heating plate tilts towards the right lowercorner; the electric heating sheets are uniformly distributed on the lower surface of the heating plate; and three partitions which are uniformly arranged in a tilting direction of the heating plate are arranged above the heating plate. The drying device swings the heating plate through a motor driven swing mechanism, and a spring arranged between the heating plate and the box body realizes rolling spherical granular feed to a lower position when the heating plate vibrates; the inclined heating plate enables the spherical feed to roll to the lower position while drying of the feed is realized;and the L-shaped partitions are arranged for spreading the rolling spherical granular feed, so that extrusion deformation caused by accumulating is avoided.

The invention discloses a sectionalized bottle-blocking and pressure-relieving device in a container conveying mechanism. The sectionalized bottle-blocking and pressure-relieving device comprises a first bottle blocking mechanism, a second bottle blocking mechanism, and a third bottle blocking mechanism which are arranged on the machine frame, wherein the first bottle blocking mechanism is positioned at the bottle supplying end of a conveying channel in the container conveying mechanism; each bottle blocking door in the first bottle blocking mechanism can rotate so as to block solid bottles to pass or rotate, so that the solid bottles in the corresponding conveying channel can pass; the third bottle blocking mechanism is positioned at the bottle blocking end of the conveyingchannel in the container conveying mechanism, and a bottle blocking rack in the third bottle blocking mechanism can move back and forth at the bottle blocking end of the conveying channel; the second bottle blocking mechanism is positioned in the middle of the conveying channel in the container conveying mechanism; each pair of bottle blocking fingers in the second bottle blocking mechanism can stretch into the conveying channel from two sides of the bottom of the corresponding conveying channel and block the bottle in the corresponding conveying channel. The sectionalized bottle-blocking and pressure-relieving device disclosed by the invention has the advantages that the squeezing force between solid bottles can be completely released, so that the solid bottle can be prevented from being squeezed and deformed; therefore, the bottle grasping accuracy of a claw mechanism in a containerizing machine can be guaranteed.

The invention discloses a directional support and reinforcement method of a stratiform surrounding rock tunnel in a high ground stress environment. The method comprises the steps that necessary rock mechanics parameters are acquired, a numerical calculation model is established, and experiment parameters are substituted into the numerical calculation model for calculation; a discrete unit numerical model of the occurrence of the surrounding rock stratum and the axial direction of the tunnel under the actual intersection angle is established, and the deformation characteristics of surrounding rock after excavation are calculated; according to numerical values of a displacement field of the tunnel section, radial displacement isolines of the tunnel section after excavation are determined; according to the distribution characteristics of the isolines, key parts of directional support in practical engineering are determined; the range, depth and support range of the directional support ofthe key parts are determined; and according to the failure characteristics of simulation results, an anchorage method is selected pointedly. The directional support and reinforcement method of the stratiform surrounding rock tunnel in the high ground stress environment have the advantages that uneven extrusion deformation of lamellar surrounding rocks caused by interlaminar cracking and shear slipcan be effectively prevented, the design change in the construction process is reduced, the construction progress is quickened, the engineering investment is effectively saved, and the directional support and reinforcement method is suitable for the design and construction of all types of stratiform tunnel surrounding rocks.

The invention discloses a pair of intelligent navigation shoes. The pair of intelligent navigation shoes comprises uppers, shoe heels, batteries, chip boxes, GPS (Global Positioning System) chips, recognizing control units, LED (Light Emitting Diode) lamp tubes, soles, ultrasonic range finders, ventilation meshes, ventilation holes, pressure sensors, insoles, wireless transceivers, constant temperature heating elements, grooves, baffle blocks, fixing hoods, humidity sensors, micro control units, calculation units, sounding devices, vibration devices, nonslip protrusions, skidproof stripes and mobile terminal equipment. According to the pair of intelligent navigation shoes disclosed by the invention, guided navigation is performed by controlling the vibration devices and the sounding devices arranged at the bottoms of shoes in four directions, so that the loss is avoided, and great help is provided for old people, children and blind people; when the shoes are worn out, the GPS chips can be taken out by drawer structures, so that the utilization rate of the chips is improved, and the cost of purchasing the shoes is greatly reduced; the insoles has the functions of heating at constant temperature, promoting blood of foot bottoms of a user to continuously circulate, and simulating the operation of human meridians at the same time.

The invention discloses a spliced panel welding tool. A spliced panel comprises a panel body and a splicing concave body. The welding tool comprises a supporting base plate. The front side of the supporting base plate is provided with a left edge and angle locating block, a right edge and angle locating block and first pressing devices. The rear side of the supporting base plate is provided with aleft sliding block with a locating supporting surface, a right sliding block with a locating supporting surface and locking mechanisms for locking the sliding blocks. A locating protrusion is arranged in the middle position of the supporting base plate. A second pressing device is arranged on the rear side of the supporting base plate. Before welding, the panel body is placed on the supporting base plate, and the left and right edge and corners of the panel body are located through the left and right locating blocks. The edge of the front side of the panel body is pressed through the first pressing devices. The sliding blocks are moved forwards and locked through the locking mechanisms, so that the locating supporting surfaces abut against the panel body, and the splicing concave body sleeved on the locating protrusion is pressed through the second pressing device. The spliced panel welding tool can improve the mounting and demounting efficiency and conduct quick locating on a workpiece and can also ensure the shape and dimension precision of the welding formed workpiece.

The invention discloses a cold-resistant, corrosion-resistant, flame-retardant and anti-interference double-sheath cable. The cable comprises an outer sheath, an anti-torsion layer, an inner sheath, awater-blocking filler and a cable core; the inner sheath is extruded on the outer side of the cable core, the anti-torsion layer is wrapped on the outer side of the inner sheath, and the outer sheathis extruded on the outer side of the anti-torsion layer; and the cable core comprises three wire cores, a tensile rope and a fixing rope. The inner sheath, the anti-torsion layer and the outer sheathare sequentially wrapped on the outer side of the cable core; double protection can be effectively performed on the cable; the cold resistance, moisture resistance and corrosion resistance of the cable are improved; the wire core can be effectively fixed and dragged through the fixing rope; the cable core is prevented from deforming and breaking due to mutual extrusion in the bending process, thefriction force between the cable core and the sheath can be effectively improved through the circularly wrapped fixing rope, the slippage between the cable core and the inner sheath is avoided, the generated stress is homogenized and eliminated through the ductility of the fixing rope, the cracking and deformation of the cable are avoided, and the service life of the cable is prolonged.

The invention discloses a face reinforcing device for a soft rock tunnel and a construction method thereof. The face reinforcing device comprises a protective layer arranged along a tunnel face and further comprises multiple hollow-structure anchor rods inserted into the soft rock tunnel by being perpendicular to the tunnel face. Multiple grout vent holes are formed in the surfaces of the anchor rods, and concrete grout in the anchor rods can flow out through the grout vent holes. Wooden wedges are arranged at the tail ends of the anchor rods. After advanced core soil of the face of the soft rock tunnel is pre-reinforced, the anti-pulling and anti-shearing capacity of the anchor rods can be fully exerted, total-length anchoring is achieved, the stability of the tunnel face is greatly improved, arch apex excessive convergence and pre-convergence deformation in the radial direction of the tunnel and extrusion deformation of the tunnel face can be avoided, an excavation machine can directly excavate and pass the tunnel, the safety in the construction process is improved, the labor intensity of workers can also be relieved, the tunneling speed is increased, the supporting cost is low,economic benefits of engineering are increased, and the application prospects are broad.

The invention discloses production and processing equipment for manufacturing a U-shaped hanging ring of electric power fittings, and relates to the technical field of mechanical manufacturing process. The production and processing equipment comprises a base and a second clamping device, wherein the base is of a working table structure horizontally placed on the ground, a machine frame is arrangedat the top end of the base, the machine frame is of a U-shaped structure with a downward opening, a drilling device is arranged on the inner wall of the top end of the machine frame, the drilling device comprises an open hole drill, a first pressing device and a bidirectional screw rod are arranged at the top end of the base, and a horizontally placed bottom plate is fixed at the top end of the bidirectional screw rod. According to the production and processing equipment, a plurality of fixing plates are arranged, each fixing plate is provided with a movable clamping plate and a rotating rod,a second motor can simultaneously drive the plurality of rotating rods to rotate at the same time, and the movable clamping plates clamp the plurality of U-shaped hanging rings in the vertical direction, so that the plurality of U-shaped hanging rings are machined at one time, and the working efficiency is improved.