408results about How to "Guaranteed structural strength" patented technology

This invention relates to the field of lighting fixtures, and discloses a variable-form lighting fixture based on origami mechanics and its design method. The invention includes an origami skeleton assembly, a light-transmitting covering layer, a light source mounting base, and a base. The origami skeleton assembly is a multi-unit origami structure that can be extended and folded. The upper end of the origami skeleton assembly is fixedly connected to the light source mounting base, and the lower end of the origami skeleton assembly is fixedly connected to the base. The light-transmitting covering layer is adhered and fixed to the outer surface of the origami skeleton assembly. The origami skeleton assembly and the light-transmitting covering layer form a deformable lighting fixture shell. The origami skeleton assembly provides a supporting foundation for shape changes and can achieve extension and folding. The light-transmitting covering layer ensures the lighting function while deforming synchronously with the skeleton. The light source mounting base and the base are fixed at both ends respectively, forming a complete lighting fixture structure that meets lighting needs while allowing for flexible shape adjustment.

This utility model provides a reinforced concrete foundation and photovoltaic support suitable for mountain foundations. The foundation includes a rock anchor bolt foundation and an above-ground reinforced concrete foundation. The rock anchor bolt foundation includes rock mass with drilled holes, anchor bolts anchored into the drilled holes, and anchor bolt fixing reinforcement connected to the upper end of the anchor bolts. The anchor bolt fixing reinforcement is embedded in the above-ground reinforced concrete foundation. The above-ground reinforced concrete foundation includes a foundation platform and short reinforced concrete columns extending vertically upwards from the centroid of the foundation platform. The bottom of the photovoltaic support column is embedded in the short reinforced concrete column. The rock anchor bolt foundation and the above-ground reinforced concrete foundation are formed as a single structure through the reinforced concrete structure, which can effectively fix the above-ground reinforced concrete foundation. This avoids the risk of the power station overturning due to excessive pull-out force on one side of the foundation caused by excessive eccentricity between the column and the foundation centroid due to terrain limitations or construction deviations.

This utility model relates to the field of low-temperature resistant sheathing technology, and discloses a low-temperature resistant sheathing tube, including a tube body, a nitrogen layer, and an inner column. The tube body has a hollow cavity inside, and an insulating airbag is fixedly connected to the inner wall of the hollow cavity. The outer wall of the nitrogen layer is fixedly connected to the inner wall of the insulating airbag. An outer column is fixedly connected to the inner wall of the tube body, a sponge is fixedly connected to the inner wall of the outer column, and a dehumidifying layer is fixedly connected to the outer wall of the inner column. A passage component is provided on the inner wall of the insulating airbag, and a reinforcing component is provided on the outer wall of the tube body. In this utility model, a hollow cavity is formed in the tube body, and an insulating airbag is placed in the hollow cavity. Nitrogen gas is injected into the insulating airbag through an inflation port. The interior of the insulating airbag is filled with chambers and air channels. Both the outer and inner columns are equipped with sponges and supplemented with a dehumidifying layer. The entire structure achieves efficient heat preservation and drying effects inside the tube body, providing a stable temperature environment for internal pipelines and cables.

The utility model relates to a wall seat structure for installing and fixing a sunshade, which belongs to the technical field of the sunshade and comprises an arm seat frame connecting piece, a transition connecting block is arranged at the front end of the arm seat frame connecting piece, and a bolt through hole connected with the arm seat frame connecting piece through a screw and nut structure is arranged on the transition connecting block. The arm seat frame connecting piece comprises an inserting block, an adjusting connecting block integrated with the inserting block is arranged at the front end of the inserting block, and a U-shaped fixing groove penetrating through the bolt is formed in the adjusting connecting block. The device has the characteristics of simple structure, convenience in installation and high structural strength. The wall body fixing part and the sunshade arm connecting part are connected through the movable transition pivot, so that angle fine adjustment after installation is achieved, and different sunlight irradiation angles or storage requirements are met.

The utility model provides a high -strength anti -bending cooling structure of charging gun charging cable, including the upper cooling pipe and lower cooling pipe made of EPDM material, the upper cooling pipe and lower cooling pipe mutually adhere, and one end of upper cooling pipe and lower cooling pipe is provided with elbow joint respectively, and the other end of upper cooling pipe and lower cooling pipe is provided with straight pipe joint respectively, forms two side clamping grooves at the adhering place of upper cooling pipe and lower cooling pipe two sides, and is provided with charging wire in two side clamping grooves respectively, the outer wall of upper cooling pipe, lower cooling pipe and charging wire is covered with a wear -resisting layer, the upper and lower cooling pipe is set up mutually adhering, forms two side clamping grooves at its two sides, and is provided with charging wire in two side clamping grooves, one aspect of this arrangement makes charging cable overall strength to improve, and it is not easy to bend, and the upper and lower cooling pipe can also play the clamping, protection effect to charging wire, on the other hand, the upper and lower cooling pipe and charging wire adhere closely, and it is favorable to the cooling of charging wire.

The application discloses a paper box joint anti-dislocation shaping equipment and particularly relates to the paper box processing technical field, which comprises a protection structure, an unfolding and shaping structure arranged above the protection structure, a conveying mechanism arranged behind the protection structure, and a vacuum generating device arranged on the outer wall of the unfolding and shaping structure. The unfolding and shaping structure can be used for unfolding and shaping paper boxes of different sizes, forming a three-dimensional shape which is almost consistent with the actual unfolding state of the paper boxes and keeping stable, thereby providing a stable operation basis for the subsequent nailing or sticking process. The protection structure can be used for limiting and aligning the paper board during the paper board butt joint adjustment, adapting to the paper board processing requirements of different width specifications, effectively avoiding the side deviation and dislocation of the paper board during the joint process, guaranteeing the accuracy of the butt joint edge alignment of the paper board, and reducing the probability of the scissors difference after the box body is shaped.

The utility model provides a kind of corrosion -resistant spiral steel pipe, the utility model includes spiral inner tube body and seamless outer tube body, and interlayer space is formed between spiral inner tube body and seamless outer tube body, and interlayer space is filled with heat preservation filling layer, the outer surface of spiral inner tube body and the inner surface of seamless outer tube body are equipped with corrosion -resistant coating, and the both ends of spiral inner tube body and seamless outer tube body are respectively equipped with first connecting frame and second connecting frame, the edge of first connecting frame is equipped with insert block one, the edge of second connecting frame is equipped with the slot compatible with insert block one, the edge of second connecting frame is equipped with insert block two, the edge of first connecting frame is equipped with the slot compatible with insert block two, and the opening is formed between first connecting frame and second connecting frame, and reinforcing strip is inserted in the opening.The utility model can improve environmental adaptability by double corrosion -resistant coating, optimize the sealing property of connecting structure, enhance the synergistic effect of reinforcing strip and heat preservation layer, to prolong service life and ensure operating stability.

The utility model discloses a kind of dielectric fiber driven grippers, including mounting base and the assembly on the mounting base of several clamping jaw mechanisms, all the clamping jaw mechanisms are distributed along circumference, to realize the automatic centring of object and catch;Each the clamping jaw mechanism includes hingedly connected first clamping jaw and second clamping jaw, and the first dielectric fiber driver for controlling the centripetal or centrifugal motion of the first clamping jaw is connected between the first clamping jaw and the second clamping jaw;The second clamping jaw is assembled on the mounting base.The utility model successfully provides a kind of gripper solution with low driving voltage, simple structure, light weight, high reliability and good grasping adaptability by combining low-voltage dielectric fiber driver with optimized design rigid clamping jaw mechanism, and it has excellent comprehensive performance and good application value.

This application discloses a fender structure and a vehicle. The fender structure includes a first fender, comprising an inner fender and an outer fender. The outer fender is mounted on the outside of the inner fender. A portion of the outer surface of the inner fender is recessed inward to form an air guide groove penetrating the inner fender in a front-rear direction. The outer fender covers the opening of the air guide groove to form an air guide channel. According to the fender structure of this application, the air guide channel is directly formed by assembling the inner and outer fenders, which makes the structure of the air guide channel more stable and less prone to problems affecting the air guiding effect due to loosening. Furthermore, the formation of the air guide channel in this application does not require pneumatic accessories, reducing the number of parts and thus optimizing the structural complexity of the fender structure. This also helps to reduce assembly difficulty and improve assembly efficiency.

The utility model provides a kind of for bogie's lower bending beam and straddle type bogie frame, the lower bending beam for bogie includes: left vertical plate and right vertical plate;Lower bending beam upper cover plate;Lower bending beam lower cover plate;First sealing plate, the first sealing plate with the horizontal upper cover, horizontal lower cover, left vertical plate and right vertical plate are connected;Air chamber muscle plate, the air chamber muscle plate with the inclined lower cover, left vertical plate and right vertical plate are connected;Second sealing plate, the second sealing plate with the inclined upper cover, air chamber muscle plate, left vertical plate and right vertical plate are connected;The left vertical plate, right vertical plate, lower bending beam upper cover plate, lower bending beam lower cover plate, first sealing plate, air chamber muscle plate and second sealing plate are enclosed to form air chamber.The lower bending beam for bogie of the utility model, sets up second sealing plate and air chamber muscle plate to replace original baffle, while guaranteeing structural strength, reduce manufacturing difficulty, realize 100% detection of air chamber all welds.

This utility model discloses an installation structure for a sunroom, relating to the field of building structure technology. It includes a base, with a top column fixedly connected to the top of the base. A roof structure is installed at the top of the top column. The roof structure includes a first connecting beam fixedly installed on one side of the top column. A first horizontal beam is fixedly connected to one end of the top column, and a first inclined beam is fixedly connected to the top of the top column. A top structure is fixedly connected to the top of the first inclined beam. This utility model, through the design of the support components and the top structure, uses a support component consisting of a first support member, a connecting block, and a fifth connecting member, vertically connecting the first and second horizontal beams. This evenly transfers the roof load to the base, significantly improving the bending resistance of large-span roofs and solving the problem of insufficient structural load-bearing capacity preventing the use of large-span structures. The design of the support components and the top structure makes this sunroom suitable for building large-span sunrooms.

The utility model discloses an integrated carrying device and an unmanned aerial vehicle. The integrated carrying device comprises a radar support, a carrying bin and a rack which are sequentially connected from top to bottom. The radar support is used for installing a radar, and the carrying bin is used for installing a holder and an airborne computer. The radar support, the carrying bin and the rack are formed by integrally cutting carbon fiber plates, and hollow weight reduction areas are arranged on the radar support, the carrying bin and the rack. The utility model has the characteristics of compact structure, high space utilization rate, high reliability and the like, realizes extreme light weight on the premise of ensuring the structural strength, and modularizes the installation of the radar, the airborne computer and the pan-tilt in the vertical space, so that the installation, debugging and replacement of various task equipment are more convenient, and the installation cost is reduced. And a universal carrying platform with high integration level and high reliability is provided for the multifunctional unmanned aerial vehicle.

The utility model provides a heliostat mirror frame, include: main girder, set up first support layer on main girder, the second support layer who is configured for bearing sub mirror, second support layer includes a plurality of second support frame interval setting on first support layer, and at least two second support frames form a sub mirror mounting area for bearing sub mirror, at least part second support frame's length is different, and / or, at least part second support frame's extension direction is different to form different sub mirror mounting area. The utility model provides technical scheme to design to a plurality of second support frame length and extension direction, make a plurality of sub mirror mounting area formed by a plurality of second support frame have at least part difference, and then make a plurality of sub mirror mounting area can be according to actual demand and splice the heliostat of different contour and install splice out different shape contour, be favorable to according to actual environment and other factors more accurately design and control the focusing effect of heliostat, improve photo-thermal conversion efficiency.

A kind of double half-ring type anti-settling buried protection device, including buried cylinder, buried upper cover and two clamps;The buried cylinder is the cylinder that is permeable up and down, the upper end of the buried cylinder is integrally formed with the detection cylinder section for built-in installation and protection gas detector;The buried upper cover can be detachably installed at the upper end of the detection cylinder section, for closing the upper port of the detection cylinder section, so as to protect gas detector when burying;Two clamps are detachably connected together and tightly embrace on the outer circumference of the detection cylinder section;The outer circumference of the clamp is integrally formed with anti-settling half-ring, and two anti-settling half-rings are synthesized into whole circular anti-settling ring.The buried cylinder of the utility model can effectively increase the contact reliability with the earth by two anti-settling half-rings, so that the buried cylinder can be stably fixed in the earth, the pressure capacity of buried protection device is enhanced, and settlement is avoided, and the design of two clamps can effectively reduce the installation difficulty of the whole device.

The utility model discloses a down-discharge type fan system with large air volume and air pressure, which comprises a shell, a fan component, an air pipe component and a sealing component, the shell comprises an upper volute and a lower volute, the fan component comprises a motor and a wind wheel, the output end of the motor is vertically upwards arranged, and the wind wheel is arranged at the output end of the motor. The motor with the vertically upward output end is embedded in the wind wheel, the fan assembly is integrated in the cavity in the bottom of the upper volute, the first connecting piece which is integrated with the lower volute and the second connecting piece which is connected with the first connecting piece in a clamped mode are arranged so that the air outlet pipe can be conveniently installed, the integration degree is high, and installation is convenient. In addition, the structural strength of the system can be effectively guaranteed, the sealing ring is arranged along the side length of the opening, the two ends of the middle air inlet net abut against the inner walls of the two corresponding sides of the upper volute respectively, and therefore the overall sealing performance and follow-up smoke exhaust smoothness are guaranteed.

The utility model belongs to the technical field of shielding cabinets, particularly relates to a portable shielding cabinet made of lightweight composite materials, and aims to solve the problems that a main body structure of an existing device is integrally made of metal materials, and although the metal materials have excellent electromagnetic shielding performance, the self weight of the metal materials is large, so that in a scene needing frequent movement or temporary construction, the electromagnetic shielding performance of the metal materials is poor. In order to solve the problems that a traditional shielding cabinet is extremely inconvenient to carry and consumes a large amount of manpower and material resources, the utility model provides the following scheme that the portable shielding cabinet made of the lightweight composite material comprises a frame main body which adopts a frame type structure; the utility model has the beneficial effects that the frame main body is formed by splicing high-strength aluminum alloy sections, the density is low, the weight is light, the frame type structure is matched, the frame is stable, the portability is obviously improved, the carrying is easy and labor-saving, the corner connecting pieces are made of high-strength engineering plastics, the weight is reduced, electromagnetic conduction is prevented, and the shielding performance is optimized.

The utility model relates to a motor accessory, in particular to a motor support, which solves the problem of structural design of the motor support. Comprising a base and an end cover which are fixedly assembled, the base is of a cylindrical structure, the base is provided with a cylinder extending integrally in the axial direction, the cylinder is provided with a connecting hole penetrating through the base, the end cover is provided with a plug corresponding to the position of the connecting hole, the plug is provided with a sealing hole communicated with the connecting hole, the sealing hole is in butt joint with the connecting hole, and the connecting hole is communicated with the connecting hole. A sealing hole is formed in the end cover, a connecting hole is formed in the end cover, a smooth connecting contact face is arranged on the hole wall of the sealing hole and the hole wall of the connecting hole, a cavity for containing a motor is formed in the position, between the sealing hole and the connecting hole, of the base, the end cover and the base are fixed in an embedded mode, and a positioning part for limiting circumferential rotation is arranged at the end, connected with the base, of the end cover. And meanwhile, a rail mounting and embedding assembly mode is assisted, so that the mounting stability and the disassembly and assembly convenience are improved, the overall structural strength is ensured, and the design and use requirements are met.

The embodiment of the present application provides a single battery and a battery pack, the single battery comprising: a shell and a cover plate, the cover plate being connected to an open end of the shell; a first protective film attached to the cover plate; and a second protective film attached to the shell; wherein part of the cover plate is not attached to the first protective film and forms a first exposed area, part of the shell is not attached to the second protective film and forms a second exposed area, and the first exposed area and the second exposed area are used for coating an adhesive. In the embodiment of the present application, the adhesive can be coated on the first exposed area and the second exposed area, so that the pressing strip can be directly bonded to the first exposed area of the cover plate through the adhesive, the connection strength of the pressing strip and the single battery is improved, meanwhile, the box can be directly bonded to the second exposed area of the shell through the adhesive, so that the connection strength of the pressing strip, the box and the single battery is improved, thereby ensuring the structural strength and stability of the battery pack.

The utility model belongs to the technical field of automobile brake systems, and particularly relates to a light-weight automobile brake disc. The outer side of the disc body is provided with an arc-shaped groove and embedded radiating fins, and the groove is filled with a heat-conducting silica gel layer; a mounting hole is formed in the center of the disc body, honeycomb lightening holes are formed around the disc body, and a tungsten carbide coating is sprayed on the inner wall; a first reinforcing rib and a second reinforcing rib are arranged on the two sides of the disc body and are welded and fixed through a connecting plate. The disc body is made of an aluminum alloy base material, the surface of the disc body is subjected to anodic oxidation and graphene coating treatment, and the disc body has both light weight and corrosion resistance. By optimizing the structural design, the weight is remarkably reduced while the strength is guaranteed, the heat dissipation performance is improved, and the automobile brake pad is suitable for a high-performance vehicle brake system and meets the requirements of modern automobiles for light weight and efficient heat dissipation.

The utility model discloses a detachable buckle lifting packaging box connecting mechanism, and relates to the technical field of packaging box connecting mechanisms, the detachable buckle lifting packaging box connecting mechanism comprises a base, and an arch bridge rod is arranged on the base; the knuckle is fixedly arranged on the upper wall of the base; a sleeve hole is formed in the upper wall of the end part of the lifting belt in a penetrating manner; the base is designed to be of a triangular structure. According to the detachable buckle lifting packaging box connecting mechanism, the knuckle and the arch bridge are combined into a whole, and the structure and the principle of a traditional waistband are used for reference, so that the assembling process of the packaging box becomes extremely simple and convenient. And the original two-time assembly step can be completed only through one-time operation, so that the packaging efficiency is greatly improved, the packaging time is shortened, and the quick packaging device is particularly suitable for the quick packaging requirement in large-scale production.

This utility model relates to the field of auxiliary equipment for construction engineering, and discloses a portable material classification, storage, and transportation box for construction engineering. The box includes a storage box with two fixed plates fixedly connected to its bottom inner wall. A motor is fixedly connected to the inner wall of one of the fixed plates, and a gear is fixedly connected to the drive end of the motor. Connecting rods are rotatably connected inside both fixed plates, and a gear is fixedly connected to the outer wall of one of the connecting rods. Transmission plates are fixedly connected to the outer walls of both connecting rods, and connecting rods are fixedly connected to the inner walls of both transmission plates. This utility model reduces the corrosion of the box material by rainwater and acidic or alkaline liquids such as construction site concrete slurry, prevents aluminum alloy oxidation and steel plate rusting, maintains structural strength, and the sealed structure reduces the leakage of volatile gases while preventing the intrusion of external corrosive gases, ensuring the chemical stability of the materials.

This application provides a valve core, a control valve, a thermal management system, and a vehicle. The valve core includes a valve stem, which comprises a main body and an adjusting portion arranged axially. The adjusting portion extends at least partially into the valve port, allowing the control valve to have a closed state and a throttling state. The adjusting portion includes a guide surface and a throttling surface. In the throttling state, the guide surface abuts against the inner wall of the valve seat, and the throttling surface and the inner wall of the valve seat form a fluid channel for fluid passage. Because the guide surface abuts against the inner wall of the valve seat, the inner wall of the valve seat can provide support for the valve stem of the valve core, preventing the valve stem from high-frequency vibration caused by high-speed scouring from the fluid. This improves the overall stability of the valve core in the throttling state, ensures stable flow regulation function of the control valve, and extends the service life of the valve core and the control valve.

The invention provides a high-strength complex-section cavity product cutting device which comprises a height adjusting mechanism, a radian adjusting mechanism, a follow-up mechanism and a cutting unit which are sequentially arranged from bottom to top. The cutting-off unit comprises a vertical cutting-off mechanism used for cutting off material belts on the two sides of the cavity product and a horizontal cutting-off mechanism used for cutting off a reinforcing rib structure in the middle of the cavity product. The invention further provides a cutting-off method which comprises the following steps: pre-punching and cutting off a process hole in advance in a material belt before rolling forming, and integrally cutting off a cavity product by adopting a regional secondary cutting-off mode after rolling forming. Follow-up continuous cutting of high-strength complex section type cavity products can be achieved on a rolling line, the cutting efficiency is high, the quality is good, the product rework rate is greatly reduced, and the service life of a cutter is remarkably prolonged; the device is flexible to use and high in universality, and can be adapted to cold-bending profiles with various different section types through replacement of the standard cutting head.

The utility model discloses a plate spring support which comprises a support body used for connecting a girder and a plate spring body and a limiting assembly, the support body is provided with a side extending plate capable of supporting the bottom wall of the girder, the support body is provided with a first wall and a second wall which are arranged in parallel, and the first wall is perpendicular to the side extending plate and attached to the side wall of the girder. The limiting assembly is installed on the frame body and connected with the girder and the plate spring body. The weight of the support can be reduced while the structural strength is guaranteed, and the dead weight of the whole vehicle is reduced.

The utility model provides a kind of reusable bent cap simple support device, including pier column, the inside of the both sides of pier column is fixed with multiple groups of conical nut of opposite arrangement, and hanging seat structure is fixedly installed on conical nut by high-strength bolt assembly, the top of hanging seat structure is supported with unloading block, the top of unloading block is supported with truss piece structure, and truss piece structure between the both sides of pier column is fixedly connected by tension bolt assembly, and the top of truss piece structure is fixed with inclined support frame in both ends, and the top of inclined support frame and truss piece structure is laid with formwork.This device can be used for formwork stable support in bridge bent cap construction process, this device is not influenced by surrounding terrain environment, and installation removal is convenient and can be reused, to effectively improve construction efficiency.

The utility model belongs to the technical field of binary fire extinguishing devices, and particularly relates to a binary fire extinguishing device which comprises a shell, a fire extinguishing agent bottle is arranged on the inner wall of the shell, a plastic connector is arranged on the upper portion of the inner wall of the shell and makes contact with the fire extinguishing agent bottle, and a conduction connector is arranged on the inner wall of the plastic connector and makes contact with the fire extinguishing agent bottle. And the conducting joint is in contact with the fire extinguishing agent bottle. The ball valve, the fire extinguishing agent bottle, the shell, the plastic connector and other structures are used in cooperation, the integrated pressing buckle fixing technology is adopted for the connecting portion of the fire extinguishing agent storage container and the valve pipe fitting, the traditional bolt fixing or gluing connecting mode is abandoned in the technology, the workload needed by equipment installation is effectively reduced, and the installation efficiency is improved. And on the basis of ensuring the sealing performance, the structural strength is also fully guaranteed.

The application relates to the technical field of textile recycling, in particular to a rewoven process method based on shredded fabric recycling, which comprises the following steps: S1: classifying and screening the shredded fabric, and selecting fabric segments with a length not less than 10 cm; S2: cutting and processing the fabric segments to form cloth strips with a width of 1 cm-1.5 cm; S3: adopting a cross-knot tying method to tie and connect the cloth strips to form continuous cloth strip wires; and S4: reserving free ends with a length of 3 cm-5 cm at each connecting knot and keeping the free ends outside the woven structure to form a feather-like or tassel-like three-dimensional decoration effect. In the application, the shredded fabric is efficiently recycled, resource waste is reduced, and the green environmental protection requirement is met; the cross-knot tying is firm and not easy to loosen, the continuity and structural strength of the wire are ensured; the free ends are reserved to form a unique three-dimensional decoration, and the design performance and product added value are improved.

The utility model relates to pressure reducing valve technical field especially relates to a high pressure difference two stage pressure reducing valve. It includes lower valve body, middle valve body and upper valve body, and the lower valve body is connected with the middle valve body through the bottom bolt of being set to its bottom, and the upper valve body is connected with the middle valve body through the top bolt of being set to its top, is equipped with the air inlet hole of being linked with lower valve body air inlet channel on the lateral wall of lower valve body, is equipped with the air outlet hole of being linked with middle valve body gas guide channel on the lateral wall of middle valve body, is equipped with a first pressure reducing mechanism between lower valve body and middle valve body, is equipped with two stage pressure reducing mechanism between middle valve body and upper valve body, and two stage pressure reducing mechanism and first pressure reducing mechanism linkage cooperation. It structure design is reasonable, and the operation is convenient, and through two stage pressure reduction, can effectively solve the export end pressure not stable, the big difficulty of regulating under the high pressure situation of inlet end and the use range limited caused by the difficulty of handling high pressure difference pressure caused by the big pressure fluctuation range of inlet end, solves the problem existing in practical use.

The utility model relates to the technical field of shock absorbers, in particular to a thermal shrinkage film damping spring sleeve, which mainly solves the problems that the shock absorber in the prior art is poor in operation smoothness and generates friction sound, and comprises a spring and a thermal shrinkage film sleeve sleeved on the spring, the inner diameter of the thermal shrinkage film sleeve is 20mm-32mm, the thickness of the thermal shrinkage film sleeve is 0.1 mm-0.3 mm, and the inner diameter of the thermal shrinkage film sleeve is 20mm-32mm. The shrinkage rate of the thermal shrinkage film sleeve is 0.5, and the ratio of the axial length of the spring to the axial length of the thermal shrinkage film sleeve is (3-5): 1.

The utility model relates to the field of concrete block, disclose a kind of reinforced self-embedded porous concrete block, including concrete block, the concrete block is composed of block one, block two, block three, block four, the front side and left side of block one are equipped with and the reserved space of another block is mutually matched and constitutes hole, the front side and left side of block one are equipped with embedding slot, the rear side and right side of block two are equipped with and the reserved space of another block is mutually matched and constitutes hole, the left side of block two is fixedly connected with integrally-formed inlay piece.In the utility model, the corresponding two inlay pieces are mutually engaged by being embedded in embedding slot, the relative displacement of block in horizontal direction front and back, left and right two-dimensional direction is limited, without using mortar, connecting piece or fixing bolt, integral stable, not easy to loosen paving structure can be formed, with the advantages of combined application flexible, simple and convenient construction, save construction cost.