30results about How to "Large compression space" patented technology

The invention discloses a tunnel lining structure filled with ceramic particles and a construction method. The tunnel lining structure comprises a surrounding rock, a preliminary support is anchored to a tunnel rock body of the surrounding rock through anchoring rods, and a waterproof layer is laid on the inner layer of the preliminary support. A ceramic particle filler is laid on the inner layerof the waterproof layer, steel anchoring frames are arranged on the inner side of the ceramic particle filler, and secondary lining pouring is conducted on the inner sides of the steel arching frames.By adopting the technology, the bearing capacity of support materials can be brought into full play, the utilization rate of the steel arching frames is greatly increased, the using quantity of the steel arching frames is decreased, the strength requirement of the steel arching frames is lowered, the ceramic particle filler is utilized to protect the steel arching frames to the utmost extent, deformation of the surrounding rock is effectively controlled, the surrounding rock is protected and reinforced, resources are saved, and the environment-friendly and economic effects are achieved.

The invention relates to a tunnel lining structure with a detachable lining tire and a construction installation method thereof. The tunnel lining structure comprises the lining tire, a pressure force meter, an alarm device, strain pieces, U-shaped expansion bolts and the like. By means of the tunnel lining structure with the detachable lining tire and the construction installation method thereof, in the construction process, the internal force of a steel arch does not increase when surrounding rocks deform, the surrounding rocks produce supporting force all the time, local damage does not happen on the surrounding rocks, and it can be guaranteed that when the steel arch is damaged, large internal force does not occur simultaneously. The tunnel lining structure with the detachable lining tire and the construction installation method thereof has the advantages that the tunnel lining structure with the detachable lining tire is suitable for tunnels with various shapes, sustaining strength of the surrounding rocks can be exerted adequately, it is guaranteed that the whole steel arch is uniformly forced, sudden damage of the surrounding rocks is prevented in the construction process, the safety property is improved, the steel arch can be dismantled in the late construction, and the tunnel construction cost is greatly reduced.

The invention relates to a real-time lossless compression method for an image. The method comprises the following steps: setting the length of a predictor according to the specification of an input initial image; predicting by using a JPEG-LS (Information T) predictor according to the input image, and carrying out subtraction on the actual value and the predicted value to obtain a residual which can be mapped to a nonnegative integer and a preprocessing result of the input image; dividing and accumulating according to the different values of division mode k and the preprocessing result of the input image, and calculating a total code length when k is equal to 0, 1, 2,..., n-3, marking a k value which corresponds to the minimum value of the code length as a k<*>, wherein n is a bit wide when the pixel value of the imported image is converted to a binary system; dividing a sample of the whole image according to the k<*> to obtain a compressed code steam for storing or transmitting. For a gray image with poor continuous color tonality, particularly a spaceborne remote sensing image, the invention can effectively reduce the space redundancy of the whole image and decrease the average value of the sample; and meanwhile, any information cannot be lost during the whole coding process and a lossless compression can be realized.

Scroll compressor including wraps of involute curves on opposite surfaces of an orbiting scroll and a fixed scroll engaged to each other, to form a compression chamber as the orbiting scroll orbits with respect to the fixed scroll, wherein each of the wraps on opposite surfaces of the orbiting scroll and the fixed scroll is formed from two or more than involute curves each having a base circle and a point of starting different from each other, thereby permitting to secure a larger compression space for a same sized scroll compressor while a reliability of the scroll compressor is not made poor, to reduce a centrifugal force and noise occurred at the orbiting scroll, and improving a stability of the orbiting scroll.

The present invention relates to flyer technology, and is especially one kind of flyer with air compressor as driving mechanism. The technological scheme is that the flyer includes mainly floating board and main body. The floating board is fixed onto the main shaft, the main shaft passes through the compressing cylinder inside the main body and extends beyond the main body, and the piston of the cylinder is fixed onto the main shaft. The main body is provided with several air compressors with different compression amount and communicated each other, engine to drive the air compressors, compressed air storage and air jet communicated to the compressed air storage. The present invention is powered by compressed air, rather than aviation fuel oil, and has greatly lowered weight and no hidden safety trouble of carrying great amount aviation fuel oil.

The invention discloses an anti-extrusion signal cable comprising a cable core, an internal protection layer, a shielding layer, an intermediate protection layer, a reinforcing layer, a protection layer and an external protection layer. The cable core comprises an insulator and multiple wire cores. The internal part of the insulator is provided with multiple first through holes and multiple second through holes along an axial direction. Each first through hole is surrounded by 3-6 second through holes. The multiple wire cores are respectively arranged in the multiple first through holes. Each wire core comprises a conductor, a polyester tape which wraps the conductor and a copper wire braiding layer which wraps the polyester tape. The internal part of the internal protection layer is provided with multiple third through holes along the axial direction. The internal part of the intermediate protection layer is provided with multiple fourth through holes along the axial direction. The signal cable has the properties of being waterproof and moisture-proof, flame-retardant and fireproof, anti-interference and anti-extrusion.

The invention discloses a cement concrete pavement waterproof structure with an embedded seam of a full-seam-opening hollow elastic tube, comprising a hollow elastic tube which is arranged in the embedded seam and can horizontally expand and contract along with the expansion and contraction of a pavement slab; the elastic tube is at least provided with an arch-shaped bulge upwards under the squeezing action of the pavement slab; the surface of the hollow elastic tube, over against the seam, is provided with an open seam of which the inside and outside are communicated; the pre-compressed magnitude of a hollow elastic waterproof part is large, so that the hollow elastic waterproof part can have relatively large extension and compression space, can adapt to deformation of a concrete slab for a long time, and especially can adapt to horizontal expansion and contraction deformation and vertical shear deformation; and when the width of a transverse seam changes with the temperature, because the compression degree of the hollow elastic waterproof part is suitable for expansion and contraction motion of the hollow elastic waterproof part, under the conditions of the expansion and contraction deformation and shear deformation of the transverse seam, by reducing the interfacial stress caused by the expansion and contraction deformation and shear deformation of the transverse seam, the joint between the transverse seam and the elastic waterproof part can not be damaged because of separation of the elastic waterproof part from the transverse seam.

The invention discloses an application of PDES in a compression-resistant self-repairing three-dimensional sensor, the three-dimensional sensor and a preparation method and an application of the three-dimensional sensor. According to the PDES, acrylamide, choline chloride and maleic acid are selected as constituent monomers, the monomers can be copolymerized under ultraviolet excitation of a photocuring 3D printer to form a compact conductive polymer network structure, and the compact conductive polymer network structure can be used for preparing a 3D printing-based super-strong compression-resistant self-repairing three-dimensional sensor. The compression-resistant self-repairing three-dimensional sensor prepared by the invention has a high ultraviolet transparent effect, the flexible cable has excellent distortion effect, stretching effect and compression effect under the action of external force, also has stable mechanical compression performance and electric signal transmission performance and excellent self-repairing function and conductivity, and has wide application value in the fields of unmanned driving, intelligent detection and the like.

The invention belongs to the technical field of household bathing equipment, and particularly relates to an auxiliary standing seat for a bathroom for old people. The auxiliary standing seat comprisesa mounting plate, a seat part, a buffer guide part and an auxiliary lifting part; the seat part is mounted on the mounting plate through the buffer guide part; the buffer guide part comprises a guiderod, a mounting base and a buffer element; the buffer element is used for buffering the seat plate; the auxiliary lifting part is arranged on the mounting plate; the auxiliary lifting part is used for assisting the lifting of the seat part by other external forces; the auxiliary lifting component comprises a lifting ring, a first pull rope, a first fixed pulley, a second fixed pulley and a pedalrod. Compared with a mode of directly supporting the arms of old people manually, the mode of assisting the old people to stand up through supporting is more labor-saving, the lumbar vertebrae and thearms of the old people can be better protected, and the safety of the old people in the showering process is further improved.

The invention relates to an elastic device which comprises an elastic body. The elastic body is formed by curling and stacking a metal wire. The cross section of the metal wire is almost shaped like a regular polygon. A strengthened layer is arranged on the outer surface of the elastic body. Compared with a spring with the turns and the length identical to those of the elastic device and a circular spring with the cross sectional area identical to that of the elastic device, in other words, compared with the spring with the elastic force equal to that of the elastic device, the gaps between the turns of a spring are larger, the compression space of the spring is larger, and the compression effect is better; through the arrangement of the strengthened layer, the fatigue strength of the spring is remarkably improved, the fatigue life of the spring is prolonged more than one time, the corrosion resistance of the spring is improved, and the cost of the high-strength spring is effectively reduced.

The invention relates to the technical field of automobile accessories, in particular to a speed-regulating pressure-regulating shock-absorbing supporting device capable of replacing a steel plate spring of an automobile shock absorber, which comprises a cylinder barrel, a cylinder cap is fixed on the outer wall of the top end of the cylinder barrel, the bottom end of the cylinder barrel is connected with a lower connecting plate, and a buffering shock-absorbing assembly is arranged on the cylinder barrel. The buffering and damping assembly comprises a piston rod and a flow adjusting component, the outer wall of the piston rod is slidably connected with the upper portion of the inner wall of the cylinder barrel, the portion, located below the piston rod, of the inner wall of the cylinder barrel is filled with hydraulic oil, and the portion, located above the hydraulic oil, of the inner wall of the piston rod is filled with nitrogen. And in cooperation with the cylinder barrel, the small piston, hydraulic oil and the flow regulating valve, the pressure borne by a vehicle body can be effectively reduced, meanwhile, the weight of the device is reduced, and buffering softness is achieved during damping.

The invention provides a mobile phone charging support with a good damping effect. The support comprises a base which is provided with a positioning through hole; a supporting plate is hinged to the base, the supporting plate comprises a supporting surface for supporting a mobile phone, and a wireless charging module for wirelessly charging the mobile phone is arranged in the supporting plate; a wire is electrically connected with the electrical element in the supporting plate, and the wire is led out from the lower end of the supporting plate and penetrates through the positioning through hole; one end of a spring abuts against the lower end of the supporting plate, and the other end of the spring abuts against the base; and the positioning through hole is gourd-shaped and comprises a first hole and a second hole, and the wire can be in clearance fit with the first hole and in interference fit with the second hole. The mobile phone charging support provided by the embodiment can effectively protect the mobile phone from being damaged by vibration.

The invention relates to the technical field of forklift production and particularly relates to a battery pack for an electric forklift. The battery pack comprises a chassis and a heat dissipating mechanism. The heat dissipating mechanism comprises an air inlet passage, an air outlet passage and a compression assembly arranged in the chassis, and both the air inlet passage and the air outlet passage are arranged in the chassis and communicate with the outside. The compression assembly includes a filtering portion and a compression portion, the filtering portion is used for performing dust removal processing on airflow entering through the air inlet passage, the compression portion is used for discharging air in the chassis, the compression portion is in transmission connection with the filtering portion, and the compression portion drives the filtering portion to close the air inlet passage and the air outlet passage is opened at the same time. The compression portion is driven in a directed direction to discharge hot air flow out of the chassis in an active heat radiation way, the air outside the chassis is sucked into the chassis in the reset process of the compression portion torealize rapid airflow conversion before and after a storage battery is loaded, and the problem of low dissipation efficiency of the storage battery in a loaded state in the prior art is solved.

The invention discloses a waterproof structure of embedding a hollow elastic pipe in a cement concrete pavement joint. The waterproof structure of embedding the hollow elastic pipe in the cement concrete pavement joint comprises a hollow elastic pipe, which is embedded in the joint and can horizontally retract with expansion and retraction of a pavement slab; the elastic pipe is at least provided with an arched convex part upwards under an extruding effect of the pavement slab; the surface, right against the joint, of the hollow elastic pipe is provided with an open joint, whose interior and exterior are communicated with each other. As the pre-compressed magnitude of a hollow elastic waterproof piece is large and the stretching and compressing spaces of the hollow elastic waterproof piece are large, the hollow elastic waterproof piece can adapt to deformations, in particular horizontal telescopic deformation and vertical shearing deformation, of a concrete slab for a long time; and as the compression degree of the hollow elastic waterproof piece is suitable for the hollow elastic waterproof piece to expand and retract, when the width of transverse joint is changed with the temperature, the elastic waterproof piece cannot be separated from the transverse joint to cause damage at the connecting part of the transverse joint and the elastic waterproof piece through reducing interface stresses of telescopic and shearing deformations of the transverse joint under situations of the telescopic deformation and the shearing deformation of the transverse joint.

The invention discloses a mold assembly which comprises a push plate, a mold plate, an ejector pin bottom plate, an ejector pin panel provided with an ejector pin and a spring sleeve. The ejector pinis further sleeved with a spring, a supporting plate is arranged at the top of the spring sleeve, the ejector pin penetrates through the supporting plate to be connected with the push plate, and a limiting structure for limiting the spring sleeve from moving towards the push plate is arranged between the spring sleeve and the mold plate; a material pulling well is arranged on the push plate, protruding blocks are arranged on the inner side wall of the material pulling well, each protruding block is provided with a holding part, the spring sleeve is additionally arranged to utilize the space ofthe push plate, the problem that the compression space of the spring is insufficient is solved, the compression space of the spring is increased under the condition that the plate thickness and the mold height are not changed, the principle that plastic expands with heat and contracts with cold is utilized, after injection molding is finished, cold materials located at the positions of the holding parts in the material pulling well can form necking openings, and the necking openings shrink when being cooled, so that the necking openings and the holding parts shrink more and more tightly, theholding effect is achieved, static mold waste is brought out, and then the static mold waste is ejected out through the ejector pin and the push plate.

The invention discloses the application of PDES in a compression-resistant self-repairing three-dimensional sensor, the three-dimensional sensor and its preparation method and application. The PDES described in the invention selects acrylamide, choline chloride, and maleic acid as constituent monomers. These monomers can be copolymerized under the excitation of ultraviolet light in a photocurable 3D printer to form a dense conductive polymer network structure, which can be used to prepare a super-compression-resistant self-healing three-dimensional sensor based on 3D printing. The compression-resistant self-repairing three-dimensional sensor prepared by the present invention has a high ultraviolet transparency effect, excellent distortion effect, stretching effect and compression effect under the action of external force, and also has stable mechanical compression performance and electrical signal transmission performance and excellent The self-healing function and electrical conductivity have a wide range of application values ​​in the fields of unmanned driving and intelligent detection.

The invention discloses a forming die for preparing a thick bottom outer-smooth metal powder filter element blind tube. The forming die comprises an outer die body and an inner die body coaxial with the outer die body, and a filter element can be contained in a gap between the inner die body and the outer die body. The inner die body comprises a supporting tube positioned by the outer die body andan inner rubber sleeve arranged on the outer surface of the supporting tube in a sleeving mode. A blind tube serves as the supporting tube, the blind end of the blind tube is in a conical or semi-spherical shape becoming thinner gradually, an annular groove is formed in the 45-degree direction of the end of the blind tube, and the inner rubber sleeve is embedded in the groove. Holes are evenly formed in the tube wall of the supporting tube, and a plurality of small holes are symmetrically formed in the periphery of the bottom of the groove. According to the forming die for preparing the thickbottom outer-smooth metal powder filter element blind tube, quality is ensured in the forming process of the thick bottom outer-smooth metal powder filter element blind tube, the thick bottom outer-smooth blind tube can be formed at a time, the situations of rupture of the inner rubber sleeve, breaking of a tube blank and the like can be effectively avoided, the production process is simplified,the problem of deformation of the outer die body is solved, and meanwhile production cost is reduced.

The invention belongs to the technical field of household bathing equipment, in particular to an auxiliary standing seat for an elderly bathroom, comprising a mounting plate, a seat part, a buffer guide part and an auxiliary lifting part; the seat part passes through the buffer guide The components are installed on the mounting plate; the buffer guide component includes a guide rod, a mounting seat and a buffer element; the buffer element is used to buffer the seat board; the auxiliary lifting component is arranged on the mounting plate above; the auxiliary lifting parts are used for the lifting of other external force auxiliary seat parts; the auxiliary lifting parts include suspension rings, No. 1 pull rope, No. 1 fixed pulley, No. 2 fixed pulley and stepping rod; The form of assisting the elderly to stand up is not only more labor-saving than the form of directly supporting the elderly's arms manually, but also more conducive to protecting the lumbar spine and arms of the elderly, and further improving the safety of the elderly in the process of showering.

The invention relates to a real-time lossless compression method for an image. The method comprises the following steps: setting the length of a predictor according to the specification of an input initial image; predicting by using a JPEG-LS (Information T) predictor according to the input image, and carrying out subtraction on the actual value and the predicted value to obtain a residual which can be mapped to a nonnegative integer and a preprocessing result of the input image; dividing and accumulating according to the different values of division mode k and the preprocessing result of the input image, and calculating a total code length when k is equal to 0, 1, 2,..., n-3, marking a k value which corresponds to the minimum value of the code length as a k<*>, wherein n is a bit wide when the pixel value of the imported image is converted to a binary system; dividing a sample of the whole image according to the k<*> to obtain a compressed code steam for storing or transmitting. For a gray image with poor continuous color tonality, particularly a spaceborne remote sensing image, the invention can effectively reduce the space redundancy of the whole image and decrease the average value of the sample; and meanwhile, any information cannot be lost during the whole coding process and a lossless compression can be realized.

The invention discloses a waterproof structure of embedding a hollow elastic pipe in a cement concrete pavement joint. The waterproof structure of embedding the hollow elastic pipe in the cement concrete pavement joint comprises a hollow elastic pipe, which is embedded in the joint and can horizontally retract with expansion and retraction of a pavement slab; the elastic pipe is at least provided with an arched convex part upwards under an extruding effect of the pavement slab; the surface, right against the joint, of the hollow elastic pipe is provided with an open joint, whose interior and exterior are communicated with each other. As the pre-compressed magnitude of a hollow elastic waterproof piece is large and the stretching and compressing spaces of the hollow elastic waterproof piece are large, the hollow elastic waterproof piece can adapt to deformations, in particular horizontal telescopic deformation and vertical shearing deformation, of a concrete slab for a long time; and as the compression degree of the hollow elastic waterproof piece is suitable for the hollow elastic waterproof piece to expand and retract, when the width of transverse joint is changed with the temperature, the elastic waterproof piece cannot be separated from the transverse joint to cause damage at the connecting part of the transverse joint and the elastic waterproof piece through reducing interface stresses of telescopic and shearing deformations of the transverse joint under situations of the telescopic deformation and the shearing deformation of the transverse joint.

The invention relates to a tunnel lining structure with detachable lining tires and a construction and installation method thereof. The tunnel lining structure includes lining tires, a pressure dynamometer, an alarm device, a strain gauge, a "U"-shaped expansion bolt and the like. The invention solves the problem that during the construction process, the surrounding rock deforms without increasing the internal force of the steel arch, and there is always a supporting force in the surrounding rock, so that the surrounding rock will not be partially damaged, and at the same time, it can ensure that the steel arch will not produce a large amount of damage when it is damaged. The problem of large internal stress. The invention is suitable for tunnels of various shapes, which can fully exert the self-supporting force of the surrounding rock, ensure that the overall force of the steel arch frame is uniform, prevent the surrounding rock from being suddenly damaged during the construction process, and improve safety. The steel arch can be removed in the later stage of construction. The arch frame greatly saves the cost of tunnel construction.

The invention discloses a signal cable, which comprises a cable core, an inner protection layer, a shielding layer, a middle protection layer, a reinforced layer, a protective layer and an outer protection layer, wherein the cable core comprises an insulator and a plurality of wire cores; a plurality of first through holes are formed in the insulator along the axial direction; a plurality of ridges are arranged on the surface of the insulator along the axial direction; the plurality of wire cores are placed into the plurality of first through holes respectively; each wire core comprises a conductor, a polyester tape and a copper wire braid layer; the polyester tape coats the conductor; the copper wire braid layer coats the polyester tape; and a plurality of second through holes are formed in the middle protection layer along the axial direction. The signal cable disclosed by the invention has excellent waterproof and damp-proof properties, flame-retardant fireproof properties, anti-interference performance and compression resistance.