38results about How to "Improve the anchoring effect" patented technology

The invention relates to the technical field of rock-soil slope reinforcement, in particular to a reinforcement device for a rock-soil slope. The device comprises a plurality of reinforcing anchor rods assembled on one side of a rock-soil slope, and reinforcing mechanisms are assembled on the inner sides of the reinforcing anchor rods. Through the structural design of the reinforcing mechanism, the stiffening mechanism and the limiting mechanism, the metal protective net can stably cover the rock-soil side slope conveniently, meanwhile, one end of a reinforcing anchor rod can be fixed to the inner side of the rock-soil side slope in cooperation with filler, the anchoring effect of the reinforcing anchor rod on the metal protective net is improved, and the service life of the metal protective net is prolonged. The reinforcing anchor rod is prevented from loosening when subjected to external scouring, the safety of the device is improved, the reinforcing anchor rod can be assisted to be inserted into the rock-soil side slope, meanwhile, the reinforcing anchor rod and the rock-soil side slope can be conveniently separated, and the operation efficiency during rock-soil side slope reinforcing construction is improved; and a second long stiffening rod, a third long stiffening rod and a second short stiffening rod are added into the filler, so that the tensile strength can be improved, and the integrity and stability of the structure are enhanced.

The utility model discloses a fixing fixture for an anti-floating anchor rod, and relates to the technical field of mechanical engineering, a second through column is arranged outside the anchor rod, a stable holding mechanism is assembled in the second through column, a power assembly is assembled in the second through column, the stable holding mechanism comprises a plurality of first connecting rods, and the first connecting rods are connected with the first connecting rods. The side end of each first connecting rod is fixedly connected with a second connecting rod, the side end of each second connecting rod is fixedly connected with a hinge block, the side end of the second through column is fixedly connected with a fourth through column, and the side end of each first column block is arranged at the side end of the fourth through column. According to the mechanism, the mechanical transmission principle is adopted, a traditional fixing clamp for the anti-floating anchor rod is improved, the stability of the traditional fixing clamp for the anti-floating anchor rod for fixing the anti-floating anchor rod is improved through an additional structure, when the hole diameter is too large, the anchor rod is inserted, the phenomenon of cavities or non-uniformity in the grouting process can be prevented, and the grouting quality and the anchoring effect are improved.

This invention discloses a microtexturing treatment and lamination process for the copper foil surface of a low-thermal-expansion high-frequency copper-clad laminate (CCL). Belonging to the field of CCL manufacturing technology, it solves problems in existing CCL technologies, such as the difficulty in balancing peel strength and high-frequency transmission performance, excessively high coefficient of thermal expansion, easy delamination between layers, and patent conflicts. This invention employs a combined plasma etching and chemical micro-etching process to prepare a honeycomb-like pit-column-protrusion composite microtexture on the resin-coated surface of the substrate copper foil. After modification with a fluorine-containing and aminosilane coupling agent and mixed passivation treatment, a surface-modified copper foil is obtained. This foil is then laminated with a low-thermal-expansion high-frequency prepreg containing linear polyarylamide through a segmented preheating, gradual pressure curing, and slow cooling and depressurization process to prepare the CCL. This invention features a simple process, conforms to industrial practice, exhibits excellent overall performance, effectively avoids patent conflicts, and is suitable for high-end fields such as 5G communication and AI servers.

This application relates to the field of anti-buoyancy technology in building engineering, and particularly to an anti-buoyancy anchor construction process and an anti-buoyancy anchor, comprising: S1: preliminary preparation; S2: rod assembly; S3: hole drilling and enlarging, drilling a deep hole at a preset position, and after drilling to the target depth, performing end enlarging construction within the enlarged hole depth range to form an anchoring grouting zone; S4: anchor lowering, lowering the finished anchor to the target depth in the hole, at which time the enlarged bladder extends into the sediment at the bottom of the hole; S5: grouting operation, injecting grout into the enlarged bladder through a grouting pipe to expand the enlarged bladder and push the sediment at the bottom of the hole outward until the enlarged bladder is filled with grout, completing the grouting construction in one step, and completing the grouting construction of the gap between the anchor rod and the inner wall of the hole; S6: prestressing locking; S7: casting to obtain the anchor anti-buoyancy system; This application has the effect of reducing the possibility that sediment at the bottom of the hole will combine with the concrete mortar during the grouting process and affect the anchoring effect of the anti-buoyancy anchor.

The application discloses a kind of sensing optical cable surface laying methods, it is related to sensing optical cable technical field.The present application includes laying vehicle, laying vehicle top is fixed with unwinding frame and pad height chamber, pad height chamber top is connected with sliding table by ground rail, sliding table top linearly is equipped with distance measuring mechanism, drilling mechanism, support auxiliary frame and wire rack, drilling mechanism includes first lifting cylinder, first lifting cylinder telescopic end is fixed with motor, motor output end is connected with drill bit, support auxiliary frame includes hydraulic hammer and second lifting cylinder.The present application can be automatically opened in installation surface by the design of drilling mechanism, the design of support auxiliary frame can be positioned to Z type support with high stability, and hydraulic hammer can assist manual hammering expansion bolt, the design of wire rack can limit the position of optical cable, the whole anchoring process worker only needs to participate in hammer tool and hook tool, save time and effort, improve laying efficiency and can ensure laying safety.

The invention relates to the technical field of engineering materials, in particular to a pumpable water-resistant anchoring agent as well as a preparation method and application thereof. The anchoring agent is a two-component system, wherein a component A comprises a first sodium silicate solution, a second sodium silicate solution, a catalyst, a chain extender, a nano inorganic filler and a super-hydrophobic coupling agent; and the component B comprises an isocyanate substance, a plasticizer, hydrophobic isocyanate and polyether polyol. Hydrophobic components are introduced into a polyurethane curing network in a chemical bonding mode, a chemical crosslinking type water-resistant mechanism is constructed, and the long-term bonding strength retention rate and the impermeability of the anchoring agent in the underwater environment are remarkably improved by cooperating with the double effects of physical hole plugging and chemical hydrophobicity of the nanofiller subjected to hydrophobic modification. Meanwhile, by optimizing the component proportion and viscosity, the product has excellent pumpability, and is especially suitable for anchoring construction in wet or underwater environments such as deep tunnels and water conservancy projects.

The FRP rod type combined tie piece comprises a five-direction communicating structural piece, a reinforcing steel bar bolt and a fiber reinforced composite material rib, the five-direction communicating structural piece comprises two horizontal connecting pipes which are perpendicular to each other, and a vertical connecting pipe is arranged at the communicating point of the two horizontal connecting pipes; the two ends of the fiber reinforced composite material rib are inserted into the vertical connecting pipes of the two five-way communicating structural parts respectively and are fixedly connected with the five-way communicating structural parts in an inserted mode through the reinforcing steel bar plug pins, and the combined tying part is formed. In practical application, leaf plate steel bars of the sandwich thermal insulation wallboard directly penetrate into the two horizontal connecting pipes which are vertically arranged to form a binding-free three-dimensional steel bar net rack, and after concrete is poured, the pulling pieces and the concrete form a composite stress body through the occlusion effect of aggregate. In the building construction process, the construction efficiency is improved, the anchoring problem of the tie piece is solved, the overall mechanical property of the sandwich heat preservation wallboard is guaranteed, and the FRP tie piece has important significance for overcoming the defects of a common commercial FRP tie piece.

The utility model discloses a greenhouse wind -proof reinforcing support, the reinforcement frame is provided with the reinforcing frame in the upper portion and the lower portion both sides of front and back frame, the inside of reinforcement frame is fixed with the reinforcing strip of X type, reinforcement frame and reinforcing strip are screwed on every contacted frame, the lower extreme of frame both sides is fixedly connected with the connecting plate that extends outward, the lower extreme fixedly connected with longitudinal distribution reinforcing nail no.

The application discloses a kind of high polymer hybrid geopolymer composite anchoring materials and preparation method thereof, the anchoring material includes metakaolin, superfine blast furnace slag, red mud, silicon carbide fiber, silica fume, alunite, cellulose nanocrystal, nano-silica sol, silane coupling agent, isocyanate, polyether polyol.Preparation method is to carry out composite with the geopolymer system of metakaolin, superfine blast furnace slag, red mud and water glass composition with polyurethane nanometer material hybrid body, and add silica fume, silicon carbide fiber and a small amount of alunite, finally form a kind of high polymer hybrid geopolymer composite anchoring material with close and firm three-dimensional interpenetrating network structure system.The composite anchoring material;The addition of silicon carbide fiber and alunite effectively solves the bending resistance of geopolymer and shrinkage problem, so that the performance of composite material tends to be perfect.

The utility model relates to a plugging device which comprises a fixing part and a sealing part, the fixing part comprises a net-shaped woven structure and a plurality of wing parts extending in the radial direction, and the length of the wing parts extending in the radial direction at least exceeds one third of the radius of the whole fixing part. Compared with the design of a traditional fixing part with the outer side edge in a cylindrical state (namely, the section is a circular boundary), the multiple wing parts are formed on the fixing part of the plugging device and can be adaptively clamped into the grooves and the protrusions of the implantation area, the anchoring piece can abut against or penetrate into the surface of the implantation area in the corresponding area conveniently, and the plugging effect is improved. And better anchoring capability is obtained.

The utility model discloses a connecting piece, a connecting assembly and a thermal insulation wall body comprising the connecting piece or the connecting assembly, which are applied to a non-combined sandwich thermal insulation wall body, and the thermal insulation wall body comprises an inner acanthus, a thermal insulation plate and an outer acanthus which are sequentially overlapped from inside to outside. Comprising a first part located in the outer acanthus, a second part located in the heat preservation plate and a third part located in the inner acanthus which are sequentially connected, and the first part and the second part are wrapped by a broken bridge material so as to avoid forming a heat bridge at the first part and the second part; the second part comprises two second connecting rods, and the two second connecting rods are connected with each other in a crossed mode. The outer sides of the first part and the second part are respectively coated with a layer of broken bridge material, so that a heat bridge can be prevented from being generated between the first part and the second part, and the energy-saving performance of the wall is improved. Meanwhile, compared with a traditional stainless steel connecting piece, on the premise that the same mechanical property can be achieved, the comprehensive steel consumption is reduced, the cost is lower, and carbon emission is reduced.

The utility model discloses a large-tonnage adjustable prestress carbon fiber plate anchoring device, and relates to the technical field of road and bridge reinforcement. In order to solve the problem that in the prior art, a carbon fiber plate anchoring device is poor in self-adaptive capacity, the carbon fiber plate anchoring device comprises an anchoring plate, a connecting piece, a mounting base and an adjustable prestress applicator. The anchoring plate is adjusted according to the size of the carbon fiber plate, the anchoring plate is connected with the mounting base through the connecting piece, the adjustable prestress applicator is arranged in the mounting base, and the force application end of the adjustable prestress applicator penetrates through the connecting piece in a sliding mode to adjust the prestress of the carbon fiber plate. The adjustable prestress applicator controls rotation of the rotating assembly through stretching and retracting of the telescopic rod, so that the push rod is pushed or pulled to slide in the sliding groove of the connecting piece, the prestress of the carbon fiber plate is adjusted, and the pressing piece is detachably connected to one end of the push rod. The pre-stress of the carbon fiber plate can be adjusted in real time through the adjustable pre-stress applicator, and the practicability of the device is enhanced.

The application relates to the technical field of medical devices, in particular to a heart atrial shunt device which comprises a lead-through part and first and second positioning bodies arranged on the two sides of the lead-through part respectively, and the lead-through part, the first positioning body and the second positioning body are integrally woven by a single braided wire. In the embodiment of the application, the heart atrial shunt device is integrally woven by the single braided wire without needing to process bulk wire heads, after installation, no redundant structure protrudes into the left and right atria, blood clots are not easy to form, the structure is simple, the size is smaller during contraction, and the damage to the access blood vessels during implantation is smaller.

The utility model relates to retaining wall composite foundation technical field, propose a kind of oblique water conservancy retaining wall composite foundation structure, the design includes ground pile assembly, ground pile assembly includes the reinforced concrete pile of being inserted into foundation place obliquely near retaining wall side;Lower top subassembly is inserted into and can slide down along the inside of reinforced concrete pile in reinforced concrete pile is set;Pusher seat is arranged in the bottom of the inside of reinforced concrete pile and can be inserted extruded outward with the lower top subassembly, and it is in annular;Each pusher seat is slidably connected in the bottom of the inside of reinforced concrete pile and is penetrated slot;Tensioning component is arranged in the outside of reinforced concrete pile and can be inserted with the lower top subassembly and be tensioned fixed with retaining wall;The design solves the problem that ground expansion mode is single and pile body and retaining wall connection are weak in prior art by adjustable radial expansion structure and dynamic tensioning system.

The present application relates to a medical device for occluding a target cavity, the medical device comprising a fixing part having a net-like support structure, and at least one anchor provided on the fixing part, the anchor being configured to abut against an inner surface of the target cavity after the fixing part is implanted in the target cavity, so as to anchor the fixing part and the target cavity to each other. By providing the anchor, the anchor abuts against the surface of the human tissue after the medical device is implanted in the human body, instead of piercing the human tissue, so as to avoid damaging the human tissue, and further avoid the wound from being damaged and enlarged due to the movement of the human tissue.

This invention relates to an occlusion device, comprising a fixing part and a sealing part. The fixing part includes a mesh-woven structure and a plurality of radially extending wings. At least one set of anchoring elements is disposed on the outer side of each wing, and the anchoring elements are disposed on the long side of the circumferential direction of the wing. Compared with the conventional fixing part design with a cylindrical outer edge (i.e., a circular cross-section), the fixing part of the occlusion device provided by this invention has multiple wings that can adaptively engage with the grooves and protrusions of the implantation area, facilitating the anchoring elements to abut or penetrate the surface of the implantation area in the corresponding area, thereby obtaining better anchoring capability.

The utility model discloses a kind of reconstruction and extension highway subgrade splicing place step type reinforcing structure, it is related to highway engineering technical field.The structure includes old subgrade and new subgrade, and old subgrade splicing side is opened multiple steps, and new subgrade filling is embedded step and forms occlusal structure;Step top surface is provided with the horizontal slope of inward inclination, and the included angle of vertical surface and horizontal plane is 60 °-80 °;Step is provided with anchoring hole at interval, and anchor rod is penetrated in hole, and one end is anchored in old subgrade, and the other end extends to new subgrade and is fixed by anchorage device.It also includes geogrid, V-shaped groove and convex occlusal structure, reinforced concrete rib beam, drainage system and foam light soil transition layer etc.The structure is strengthened by multiple measures new and old subgrade integrity, shear performance and drainage capacity, reduce settlement difference, effectively solve the disease problem existing in traditional splicing technology, improve highway stability and service life.

The invention discloses a prime coat copper foil for improving stripping and cycle performance of a negative pole piece and a preparation method of the prime coat copper foil, and relates to the technical field of current collectors. The preparation method comprises the following steps: adding magnesium lithium silicate and ammonium carbonate into prime coating slurry, and then coating a copper foil with the prime coating slurry to obtain a prime-coated copper foil; after surface carboxyl of magnesium lithium silicate and oxygen-containing groups of polyacrylic acid are compounded, a large number of high-strength hydrogen bonds are formed, and when a negative electrode generates huge expansion stress in the circulation process, a hydrogen bond network between magnesium lithium silicate nanosheets and a polymer is broken, absorbs energy and buffers the structural change of an active material, so that the circulation performance of a battery end is improved; ammonium carbonate is heated and decomposed into NH3 and CO2, gas escapes and leaves nanoscale pores in the coating, on one hand, the gas can generate a stronger anchoring effect with a negative electrode active material to improve the stripping force of a pole piece, and on the other hand, the pores can serve as buffer pores to inhibit volume expansion of silicon particles during lithium intercalation and improve the cycle performance.

The utility model relates to a heat preservation composite board outer wall fixing anchor bolt gasket which comprises a screw rod, an expansion sleeve and an auxiliary sleeve, the expansion sleeve is arranged on the outer wall of the screw rod, and the outer wall of the expansion sleeve is sleeved with the auxiliary sleeve and detachably connected with the auxiliary sleeve; one end of the screw rod gradually expands outwards to form a conical bolt head, the other end of the screw rod is provided with a gasket and a nut, the expansion sleeve is located on the outer wall of the screw rod between the bolt head and the gasket, an expansion seat is arranged at the end, close to the bolt head, of the expansion sleeve, and a plurality of through grooves extending in the axial direction of the expansion seat are formed in the expansion seat. The auxiliary sleeve is arranged on the outer wall of the expansion sleeve, when a drilled hole is too large, the contact area between the anchor bolt and the hole wall can be increased through the auxiliary sleeve, re-drilling is not needed, damage to a base layer wall caused by re-drilling near the original anchor bolt position is avoided, and therefore the stability of the anchor bolt is improved; and the time and labor cost for re-drilling are saved, and the mounting efficiency is improved.

The utility model provides a kind of jacket positioning device, including ferrule, connecting rod, fixed cone, fixed stake, lower flange and guide column;Fixed stake and fixed cone are inserted on ground, improve the effect of anchoring, lower flange is equipped with guide column, make limit gap align guide column in the process of descending, when limit gap is sleeved on guide column, can make jacket move down along guide column, guide column plays the guiding role to jacket moving down, simultaneously, as guide column is rigid, can avoid jacket to occur inclination and deviation under the beating of sea wave, facilitate the installation of jacket.

The invention belongs to the technical field of preparation of positive electrode materials, and particularly relates to a high-rate sodium vanadium phosphate positive electrode material, a preparation method thereof and a battery. The method comprises the following steps: S1, dissolving ammonium metavanadate and oxalic acid in water to form a solution A; s2, performing ultrasonic dispersion on CNT in absolute ethyl alcohol to obtain a dispersion B; s3, slowly dropwise adding the dispersion B into the solution A until a stable transparent blue solution C is formed; s4, sequentially introducing sodium dihydrogen phosphate and thioacetamide into the solution C, and stirring to form viscous gel; and S5, carrying out vacuum drying on the viscous gel to obtain a precursor, then carrying out high-temperature heat treatment on the precursor under the protection of a nitrogen atmosphere, and finally putting a product subjected to high-temperature heat treatment in a liquid nitrogen atmosphere for rapid cooling to obtain the high-rate sodium vanadium phosphate positive electrode material. The material has relatively low resistance and relatively large sodium ion diffusion coefficient, so that the reversible specific capacity is highest, and the rate capability is best.

This utility model discloses a screw-locked prestressed concrete square pile with a concealed lifting ring, relating to the field of building engineering technology. It includes a screw-locked prestressed concrete square pile, a concealed groove, and a telescopic lifting ring. The screw-locked prestressed concrete square pile has a concealed groove, within which a telescopic lifting ring is pre-embedded. The telescopic lifting ring comprises a hooked rod cylinder, a straight rod body, and an arc-shaped rod body. This utility model, by creating a concealed groove on the concrete square pile and pre-embedding the telescopic lifting ring within it, allows the telescopic lifting ring to be manually extended before lifting, partially extending out of the concrete square pile. After lifting, the upper part of the telescopic lifting ring automatically retracts into the lower part under gravity, achieving concealment. After the lifting ring is concealed, the lower surface of the upper pile can directly and tightly fit with the upper surface of the lower pile, enhancing the friction between piles, improving stacking stability, avoiding the collision risk caused by the protrusion of traditional lifting rings, and eliminating the need for wooden supports, thus saving on wooden support costs.

The utility model discloses a pre-embedded edge protective railing, and belongs to the technical field of construction protective equipment. The handrail provided by the utility model comprises a built-in embedded part, a wall connecting part, a screw rod, a fixing part, connecting steel, a pipe vertical rod and a cross rod. The built-in embedded part is embedded into a concrete structure, the wall connecting part comprises a hoop and a circular ring seat, the hoop is fixedly connected with the circular ring seat, one end of the screw rod is fixedly connected with the built-in embedded part, and the other end of the screw rod is fixedly connected with the circular ring seat; the connecting pipe penetrates through the hoop and is vertically and fixedly connected with the hoop; the vertical rod is vertically and fixedly connected with the connecting pipe through a fixing piece, and the transverse rod is vertically and fixedly connected with the vertical rod through a fixing piece. According to the device provided by the utility model, the anchoring effect of the anchoring part is improved in an embedded manner, the safety is improved, and the construction of a wall body and the like is not interfered. In addition, the handrails are convenient to mount and dismount, can be repeatedly used, do not leak after being blocked, and guarantee structural integrity and durability.

The present application relates to a kind of light building materials containing vinasse and its preparation method and application, belong to light building material technical field, material includes cement, composite activated powder, modified reinforcing fiber, composite foaming agent, graded expanded perlite, shale haydite, weather-resistant reinforcing additive, waterproof plugging additive, heat preservation stabilizing additive, polymer of methyl oxirane and oxirane dimethyl ether etc. Component.Composite activated powder is the mixture of vinasse, slag powder, expandable graphite powder and nanometer silicon dioxide, is prepared after surface modification by silane coupling agent KH-560.Modified reinforcing fiber is short fiber made of glass fiber reinforced PP particle melt extrusion, is prepared after surface modification by silane coupling agent KH-550.Composite foaming agent is prepared by mixing vinasse protein solution, ammonium bicarbonate, wood fiber and tween-80.Each component is used in cooperation, interface modification is optimized, realizes the light weight of material, and improves strength, waterproof, anti-permeability and frost resistance.

This invention discloses an anti-oxidation and wear-resistant composite coating for an alloy roller surface and its manufacturing process, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer. Both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, circumferentially staggered on the alloy roller surface. At least one set of intersection nodes is formed between adjacent alloy groove coating layers one and two, and anchoring nodes are provided at the intersection nodes. Alloy groove coating layers one and two are located inside the alloy working layer. This invention improves the interlayer bonding strength and reduces the thickness by improving the structure, materials, and process, while also enhancing impact resistance, thermal shock resistance, and corrosion resistance to a certain extent, and maintaining high hardness at high temperatures.

The invention discloses an ecological anchoring device with turbine rotational flow rainwater collection and spiral permeation enhancement functions, comprising: a cylinder, the top and bottom of which are open, the periphery of the cylinder being provided with spiral blades whose screw pitch is reduced from top to bottom, so that the side wall of the cylinder is divided into a plurality of sections by the spiral blades, and the sections being provided with a plurality of water seepage holes; the rainwater collecting disc is provided with a central through hole communicated with the upper part of the cylinder body and a plurality of spiral flow guide ribs distributed at intervals along the circumferential direction of the central through hole, so that a plurality of spiral flow guide grooves are formed in the disc surface of the rainwater collecting disc; the annular baffle is located at the center through hole and connected with the rainwater collecting disc through a connecting piece, so that a planting area isolated from the spiral flow guide groove is formed in the center through hole, and an annular water falling groove allowing rainwater in the spiral flow guide groove to flow to the cylinder is formed in the periphery of the planting area. The device can prevent the water inlet from being blocked to influence the water inlet efficiency, solves the contradiction between the rainwater collection efficiency and the seedling safety, and improves the water utilization rate and the anchoring force of the device.

This invention discloses an end-uncured FRP rebar anchoring system and method. The anchoring system includes FRP rebar, a sleeve, a steel rod, a cap, an end plate, a positioning plate, and grout. The FRP rebar is divided into an uncured fiber bundle segment and a cured portion. The sleeve is an inner conical cylinder with a constant outer diameter and a reduced inner diameter, with a groove at the large-diameter end. During anchoring, one end of the FRP rebar is sequentially passed through the central holes of the end plate and positioning plate, and then exits through the large-diameter port of the sleeve. The uncured fiber bundle of the FRP rebar is then wound around the steel rod, and the end is adhered to the surface of the cured FRP rebar. The steel rod is then placed in the groove at the large-diameter end of the sleeve. Finally, grout is injected into the sleeve, and the cap is closed. Anchoring is completed after high-temperature curing and cooling. This invention performs "soft" and "hard" segmentation treatment on the FRP rebar, bending and winding the FRP rebar around the steel rod and bonding it with the grout, thus reducing the anchor length while anchoring the FRP rebar.

This invention relates to an occlusion device comprising a fixing part and a sealing part. The fixing part includes a mesh-woven structure and a plurality of radially extending wings with gaps between adjacent wings. Compared to conventional fixing part designs with cylindrical outer edges (i.e., circular cross-sections), the fixing part of the occlusion device provided by this invention has multiple wings that can adaptively engage with grooves and protrusions in the implantation area, facilitating the anchor to abut against or penetrate the surface of the implantation area in the corresponding region, thereby achieving better anchoring capability.

The utility model relates to the technical field of foundation pit support, concretely is a kind of foundation pit support for subway construction, including support body, the left and right sides of support body front side are all fixedly connected with support seat, the inner chamber of support seat is rotatably connected with support component, the left and right sides of support body front side are all equipped with connecting rod, the surface of connecting rod is equipped with several locking holes, the left and right sides of support body front side are all equipped with connecting assembly.The utility model is connected with the connecting assembly, not only realizes the stable limiting and reliable locking of support component in the process of adjusting installation angle, but also significantly enhances the connection strength and overall structural stability between support component and ground, the locking mechanism (such as the cooperation of locking rod and locking hole) in connecting assembly can instantly fixed connecting rod, to ensure the accurate maintenance of support plate angle, it is convenient for user to operate subsequent fastening operation with one hand.