36results about How to "Waterproof and stable" patented technology

The invention discloses a waterproof and decorative integrated coating and a preparation method thereof. The waterproof and decorative integrated coating is prepared from the following components in parts by weight: powdery materials: 18-28 parts of white cement, 30-50 parts of white quartz sand, 20-30 parts of white quartz powder, 0.3 part of cellulose ether, 2.5 parts of dispersible latex powder8034, 0.5 part of white wood fibers C500, 0.3 part of elotex water repellent SEAL80, 8 parts of white microsilicon powder, 0.4 part of powder defoaming agent 803 and 0.1-5 parts of iron oxide pigment; and liquid materials: 40-60 parts of pure acrylic emulsion (small molecules), 30-50 parts of VAE emulsion, 10-20 parts of deionized water, 2 parts of dispersant and 2 parts of defoaming agent. The preparation method comprises the steps: uniformly stirring all the powdery materials for 5-10min, and then, carrying out packaging; and uniformly stirring all the liquid materials for 5min, and then, carrying out packaging. The waterproof and decorative integrated coating is alkali-resistant, impermeable, ultralong in weather resistance, simple in construction, time-saving and environment-friendlyand can be molded one time.

The invention discloses a line fixing mechanism. The line fixing mechanism includes a line fixing device and traction assisting mechanisms arranged on the line fixing device; each traction assisting mechanism comprises traction holes for connecting or fixing cable traction devices; the line fixing device comprises a base and line passing devices, wherein each line passing device is arranged on the base and includes a first body and a second body; the first body and the second body are provided with line clamping heads and line clamping portions respectively, wherein the line clamping heads can be matched with the line clamping portions, so that line passing spaces can be formed; each line clamping head includes a locking bolt and a line clamping block; the locking bolt is rotatably connected with the line clamping block; the locking bolt is connected with the first body through a screw hole; and when the line fixing mechanism is used, the locking bolt is rotated so as to drive the corresponding line clamping block to move, so that the size of the corresponding line passing space can be adjusted. The line fixing mechanism of the invention has the advantages of simple structure, waterproof, damp-proof and anti-oxidation performance, high security, stable cable clamping, long service life and easiness in disassembly.

The invention provides an antistatic waterproof functional woven fabric and a method for preparing the same. The method includes weaving, type approval, finishing and shaping. Fiber materials for the antistatic waterproof functional woven fabric include, by weight, 20-100% of antistatic polyester fibers or polyamide fibers. Type approval includes waterproof treatment at the temperatures of 120-230 DEG C; antistatic functional powder with the size of 30-150 nm is used when the fiber materials are prepared. The antistatic waterproof functional woven fabric and the method have the advantages that antistatic fibers are creatively added into the antistatic waterproof functional woven fabric for current waterproof fabric treatment modes, accordingly, accumulation of electrostatic charge can be effectively reduced, attenuation half lives of frictional electrostatic voltages and the electrostatic charge can be shortened, and the garment fabric has appropriate, attractive, healthcare and safe performance.

The invention discloses a fast-curing waterstop plugging material as well as a preparation method and an application method thereof, belonging to the field of waterproof plugging projects. The fast-curing waterstop plugging material disclosed by the invention comprises the following components in parts by mass: 4-6 parts of water swelling aggregate, 3-5 parts of fast-hardening cementing material, 0.1-0.9 part of a coagulation accelerator and 0.1-0.9 part of a hardening accelerator, wherein the coarse aggregate in the water swelling aggregate is expanded perlite, and the fine aggregate is bentonite; the particle size of the expanded perlite is 1-5mm, and the particle size of the bentonite is less than 1mm; and the mass ratio of the expanded perlite to bentonite is 1-2. According to the invention, through the water swelling property of the plugging material aggregate, a fast water plugging effect is realized; in the water plugging process, since the concretion body is dense accumulation of the coarse and fine aggregates, the components of the fast-hardening cementing material, the coagulation accelerator and the hardening accelerator do not change in situ, and the concretion body has the effects of waterstop, plugging and stable strength of concretion structure for sure.

Provided are a high-performance self-adhesion asphalt polymeric membrane composite rolled waterproof material and a preparation method thereof. The composite rolled waterproof material comprises, by weight parts, 100-150 parts of asphalt, 15-40 parts of softener, 10-20 parts of polymer modifier, 8-16 parts of tackifier and 20-30 parts of talcum powder. The invention further discloses a method for preparing the high-performance self-adhesion asphalt polymeric membrane composite rolled waterproof material. The product is stable in structure, good in flatness and stability after construction, high in tensile strength, ductility and basic layer shrinkage distortion and cracking adaptability, good in initial adhesiveness and lasting adhesion, firm in lap joint and reliable in waterproof performance, excellent in high-and-low temperature resistance, good in weather resistance, low in cost, convenient to construct and low in energy consumption and conforms to the construction energy-saving trend.

The invention discloses a waterproof machine shell for a water controller. The shell comprises an upper shell and a lower shell which are buckled hermetically and mutually, wherein a positive spigot is formed on the inner wall of a lower port of the upper shell, a negative spigot which is in close fit with the positive spigot is formed on the inner wall of an upper port of the lower shell; dubbin is coated on a matching surface of the negative spigot and the positive spigot; the periphery of the lower port of the upper shell and the upper port of the lower shell, which is closely adjacent to the positive spigot and the negative spigot, is respectively provided with grooves for embedding and clamping sealing members; an upward flange is arranged at the periphery of the groove of the upper port of the lower shell; a glue groove is formed by the flange and the outer wall of the lower port of the upper shell; and sealant is filled into the glue groove. A triple waterproof structure of spigot sealing, sealing member sealing and sealant-pouring sealing at an outer seam of the upper shell and the lower shell is adopted; and compared with a sealing mode of arranging a seal ring in a single groove in the prior art, the waterproof machine shell has the advantages of more reliable and stable water prevention and vapor prevention and excellent heat dissipation, and overcomes the defect of overburning a circuit board due to local overheating.

The invention discloses a method of installing a penetration crystal waterproof layer in the concrete construction, which comprises the following steps: (1) adhering a dielectric layer with a film structure on the surface of template or module used for watering and stirring concrete construction; (2) painting the penetration crystal waterproof material on the dielectric layer; (3) using the template or module after being processed by the above steps for watering and stirring the model of concrete construction and enabling the penetration crystal waterproof material to be in direct touch with the watered concrete; (4)watering concrete into the model; (5) dismounting the template or module after the concrete is gelated and consolidated and covering and adhering the penetration crystal waterproof layer on the surface of concrete construction. The method disclosed by the invention is characterized in that the installed penetration crystal waterproof layer can be firmly and fully adhered to the surface of the concrete construction, the waterproof quality is assured, the construction process is simplified, and the intensity of labor and the comprehensive cost of the project are both reduced.

The invention discloses a butterfly valve with fast adjusting and precise positioning functions. The butterfly valve comprises a base. The top of the base is fixedly connected with the bottom of the side surface of a valve body. Both the left side and the right side of the inner side wall of the valve body are sleeved with valve rod bearings. The opposite sides of the two valve rod bearings are movably connected through a main valve rod. The side surface of the main valve rod is fixedly connected with one side of a water-stop plate. One side of the water-stop plate is fixedly connected with areinforcing plate. The reinforcing plate is sleeved with the main valve rod. According to the butterfly valve, through cooperative use of a guide rod, a stop dog, limiting grooves, an inserting rod, an extrusion spring, sliding blocks and telescopic rods, when the water-stop plate in the butterfly valve needs to be adjusted quickly, an operating wheel is pulled, the inserting rods are extruded bythe limiting grooves in the guide rod, the sliding blocks extrude the extrusion spring, and then the inserting rod can be inserted into the limiting groove in the right side, so that the guide rod canbe fixed in a through groove, operation of the equipment is facilitated, and the purposes of quick adjustment of the flow and precise control over the flow can be achieved.

The invention provides a reaction type non-asphaltic base waterproof composition which is characterized by comprising the following raw materials in parts by weight: 20-60 parts of rubber, 20-40 parts of a tackifier, 8-15 parts of a softener and 0.2-4 parts of a waterproof bridging agent, wherein one end in the structure of the waterproof bridging agent can be in reaction joining with groups like unsaturated C=C double bonds and carboxyl group (-cooh) in a non-asphaltic material, and the other end can be combined with hydrated calcium silicate or calcium aluminate which are produced in cement hydration process to form chemical bonds, and further can be subjected to chemical cross-linking reaction with concrete to set up a waterproof bridge, so that the non-asphaltic material can be tightly bonded with cement to form an integral body; besides, as related parts have chemical bond action, an irreversible cohesive action can be achieved after curing, the adhesive force between a waterproof glue and the base surface of cement can be increased, the bonding strength between the waterproof material and the base surface can be improved, and the weathering resistance of the waterproof material can be further improved.

The invention relates to the technical field of a waterproof building material for a tunnel, and particularly relates to a high polymer self-adhesion waterproof roll and a production method of the high polymer self-adhesion waterproof roll. The high polymer self-adhesion waterproof roll comprises a high density polyethylene waterproof board, a self-adhesion layer, a sand layer and limiting strips,wherein the self-adhesion layer is coated on one side of the high density polyethylene waterproof board; the tensile shear strength of a material of the self-adhesion layer is not less than 300 Mpa / m<3> at 145 DEG C to 155 DEG C at 101.325 Kpa; the limiting strip is adhered on the self-adhesion layer, the quantity of the limiting strips is two; the two limiting strips extend in the length direction of the high density polyethylene waterproof board, are arranged in parallel, and keep a maximal scheduled distance; the sand layer is adhered on the self-adhesion layer.

The invention discloses an LED outdoor screen double-groove glue layer quick smearing device. The LED outdoor screen double-groove glue layer quick smearing device structurally comprises a glue smearing moving arm, a machine body, an action arm, four expansion force arms, an anti-skid head and a base, wherein the glue smearing moving arm is perpendicularly fixed to the top of the machine body; a rotating shaft in the middle of the machine body is consistent with the center of the action arm; the four expansion force arms are uniformly fixed around the action arm; the ends of the expansion force arms are tightly attached to the anti-skid head through bolts; the bottom of the machine body is welded and fixed to the base; and the glue smearing moving arm is fixed to the top of the action armand is in signal communication with the action arm through a wire. To sum up, after improvement, the glue smearing moving arm is used for mechanically and rapidly carrying out waterproof treatment onthe edge of an LED lamp board, and better stability and better port flushness are realized due to a double-groove mode while waterproof treatment.

The present invention provides a reaction typ enon-asphalt base waterproof composition. The composition is characterized by comprising the following raw materials in parts by weight: 20-60 parts of rubber; 20-40 parts of a tackifier; 8-15 parts of a softening agent; and 0.2-4 parts of a waterproof bridging agent. One end of the waterproof bridging agent can be combined with C=C double bonds or carboxyl (-COOH) of rubber, and the other end of the waterproof bridging agent can be bonded with acid radicals generated after cement is hydrated. A waterproof bridge is built, and very strong adhesive force is generated, so that glue and the cement are tightly bonded to form a firm waterproof layer.

The invention discloses an environment-friendly type synthesis polymer steel roofing paint, which belongs to the field of waterproof construction. The paint comprises the following components: 8-20 parts of a polyolefin thermoplastic elastomer, 4-8 parts of aldehyde ketone resin, 2-12 parts of styrene resin, 1-5 parts of silicon powder, 1-10 parts of mica powder, 1-5 parts of rutile titanium dioxide, 0.3-1 part of an antioxidant 1010, 0.3-1 part of an antioxidant 1076, 0.3-1 part of an anti-oxidant 531, 0.5-2.5 parts of an antifoaming agent, 0.3-1 part of an ultraviolet ray absorber, 5-30 parts of D40 solvent naphtha, and 5-30 parts of butyiate solvent naphtha. The milk-white steel roofing waterproof paint has the characteristics of no toxicity, no harm, no pollution, no containing of noxious materials and harmful components such as pitch and benzene, and realization of free toning. The product performance is stable, the material service life can reach 30 years or more, and has the characteristics of strong adhesion stress, good penetration performance and good elongation percentage.

The present invention provides an application of a waterproof bridging agent in a non-asphalt base waterproof material. The waterproof bridging agent accounts for 0.3-3% of weight of sticky substances in the non-asphalt base waterproof material. One end of a structure of the waterproof bridging agent can be connected with groups such as unsaturated C=C double bonds, carboxyl (-COOH) and the like in the non-asphalt base waterproof material; the other end of the structure can be combined with hydrated calcium silicate or calcium aluminate generated in a cement hydration process to form a chemical bond; the chemical bond and the concrete generate chemical cross-linking reaction to build a bridge for tightly connecting the non-asphalt base material and cement into an integer; and chemical bond actions exist in relevant parts and make reversible bonding effects after curing, thereby improving adhesive force between waterproof glue and a cement base surface, improving adhesion strength between the waterproof material and the base material and improving weather resistance of the waterproof material.

The invention provides a reaction type non-asphalt base waterproof composition. The composition is characterized by being composed of the following raw materials in parts by weight: 20 to 60 parts of rubber, 20 to 40 parts of tackifier, 8 to 15 parts of softening agent, and 0.2 to 4 parts of waterproof bridging agent. The composition can carry out chemical crosslinking reactions with concrete to generate a physical mortise and tenon cooperative bonding effect, a strong bonding force is generated, a waterproof bridge is generated, the glue and cement are tightly bonded, and a firm waterproof layer is formed.

The invention provides an application of a waterproof bridging agent in a non-asphalt base waterproof material. The waterproof bridging agent accounts for 0.3 to 3% of the sticker in non-asphalt base waterproof material, and is used as the crosslinking agent of non-asphalt base waterproof glue, so the waterproof agent can carry out chemical crosslinking reactions with the cement surface, the bonding force between the waterproof glue and cement surface is enhanced, the binding strength between the waterproof material and the surface is increased, and the weatherability of the waterproof material is improved.

The invention relates to an underground waterproof engineering construction method and belongs to the field of building waterproof construction. The underground waterproof engineering construction method comprises the following steps that 1, glass wall boards are erected at the front end of four wall faces of a basement, the upper ends of the glass wall boards are attached to the top wall of the basement, the four glass wall boards form a rectangular frame in an enclosing manner, and a gap is left between each glass wall board and the corresponding wall face; 2, two adjacent glass wall boardsare adhered together after being attached to each other in a mutual perpendicular state; 3, waterproof sealing rubber strips are arranged at the four corner edges of the rectangular frame, and concrete is poured on the upper end surfaces and the lower end surfaces of fixed bases; 4, the bottom walls in the gaps are provided with the fixed bases respectively, the fixed bases are provided with waterproof films respectively, and finally, the upper ends of the waterproof films are provided with rectangular floating frames respectively, wherein each rectangular floating frame is made of foamed plastics; and 5, the position, right opposite to an entrance or exit door of the basement, on each glass wall board is provided with an entrance or exit. The underground waterproof engineering construction method has the advantage that secondary water prevention can be performed after water leakage of an underground wall face so as to prevent water from flooding the basement.

The invention discloses a preparation method of a waterproof power supply based on a prime coating process, and the preparation method of the waterproof power supply based on the prime coating processcomprises the following steps: assembling: assembling each functional component, a circuit board and a power supply shell which are prepared in advance; testing, namely testing the assembled functional components, the circuit board and the power supply shell; spraying, namely spraying the surfaces of the tested functional components and the circuit board and the inner side of the power supply shell; airing: placing the sprayed functional components, the circuit board and the power supply shell on a ventilated operation line, and naturally airing the functional components, the circuit board and the power supply shell; and pouring glue, namely quantitatively pouring glue into the aired product by using a glue pouring machine. The method has the beneficial effects that the primer adopted bythe solvent-free primer belongs to a solvent-free primer, so that the harm to the environment is reduced, the problem of potential safety hazards is also reduced, and meanwhile, no harm is brought tothe health of workers.

The invention discloses a waterproofing coating of hot-melt butadiene styrene rubber. The waterproofing coating comprises the following components by weight percent: 47% of asphalt, 12% of styrene-butadiene-styrene (SBS), 6% of SIS rubber, 8% of petroleum resin, 6% of argil, 9% of cab-O-sil and 12% of three-line oil. The preparation method comprises the following steps: selecting materials, agitating, grinding, cooling, inspecting a finished product and the like. The waterproof coating disclosed by the invention has the characteristics of being green and environment-friendly, excellent in ageing resistance, strong in binding power, good in permeability, good in ductility, and good in high and low temperature resistance, and the product has the characteristics of being vivid in color, convenient to construct and wide in application range because of adopting the technical scheme.

The invention provides a reaction type non-asphalt base waterproof composition, which is characterized by comprising the following raw materials in parts by weight: 20 to 60 parts of rubber, 20 to 40 parts of tackifier, 8 to 15 parts of softening agent, and 0.2 to 4 parts of waterproof bridging agent. One end of the waterproof bridging agent is combined with the carbon-carbon double bond (C=C) or carboxyl group (-COOH) of rubber, the other end is combined with the acid group, which is generated after the cement is hydrated; thus a waterproof bridge is built, a strong bonding force is generated, the glue and cement are tightly bonded, and a firm waterproof layer is formed.

The invention discloses a non-woven fabric PE hand bag and a manufacturing method thereof. The non-woven fabric PE hand bag comprises a rectangular bag body; the rectangular bag body is provided withfolding pressing marks; the rectangular bag body forms a front side wall, a rear side wall, a left side wall, a right side wall and a bottom side wall after being strutted along the folding pressing marks; two corners at the lower end of the rectangular bag body are turned inward and are in hot-pressing connection with the inner sides of the left side wall and the right side wall; handles are arranged at an opening of the rectangular bag body; the handles are fixedly connected with the rectangular bag body by a hot-pressing or sewing mode; the rectangular bag body and the handles are made of composite films; each composite film comprises a non-woven fabric layer, a PE layer and a BOPP layer which are sequentially arranged; and the PE layer is made of either PP or PE. The non-woven fabric PE hand bag is non-toxic and non-irritating, is waterproof and firm, is simple in manufacturing technology, is an environment-friendly and green product capable of being recycled, and is wide in application scope; and the non-woven fabric PE hand bag can serve as an advertisement carrier for printing and publicizing advertisements.

The present invention discloses a terminal wire fastening device assembly. The terminal wire fastening device assembly comprises a wire fastening device and a cable terminal fastening device which is arranged at one side close to a cable terminal of the wire fastening device and comprises a fastening block and a fastening bolt. The fastening block is equipped with a fastening threaded hole matching the fastening bolt and a wire passing hole through which the cable terminal can pass, and one end of the fastening bolt penetrates the fastening threaded hole and is inserted in an insulating sheath of the cable terminal to be in snap joint with the insulating sheath, thereby fixing the cable terminal and the fastening block. The wire fastening device comprises a pedestal and at least one wire passing device arranged on the pedestal and comprising first and second bodies, the first and second bodies are respectively equipped with the wire clamping heads and the wire clamping parts which can match to form the wire passing space and can adjust the wire passing space, and the pedestal or the wire passing device is connected with a reinforcing device which can be fixed to a wall body. The terminal wire fastening device assembly of the present invention has the advantages of being simple in structure, good in safety and long in service life, being waterproof, moistureproof and anti-oxidation, being firm to clamp the cable terminal, even being easy to disassemble.

A safe and efficient sealing structure applied to a high-voltage box comprises a box body, corner supporting pieces, corner sealing pieces, locking blocks, first springs, second springs, side supporting pieces, side sealing pieces and a box door. A folded edge is arranged in the circumferential direction of the top surface of the box body; and the corner supporting pieces are arranged on the innerside walls of the folded edges, and the outer sides of the corner supporting pieces and the inner side walls of the folded edges form corner hollowedgrooves. Angle limiting blocks are arranged on theouter sides of the two ends of the angle supporting piece; the corner sealing piece is arranged on the outer wall of the corner supporting piece; the locking block is embedded into one end of the angle hollowedgroove and is matched with the angle embedded block, so that the angle sealing piece and the box body are limited and fixed; and the first springs are arranged at the two ends of the cornerhollowedgroove. The second spring is arranged at the middle end of the angle hollow groove; the side supporting pieces are arranged on the inner wall surface of the box body on each side; the side sealing piece is arranged on the top side of the side supporting piece; and the box door and the box body are rotatably arranged through a movable hinge. The sealing structure has stable waterproof andvapor-proof effects, so that the high-voltage power connection box structure is suitable for humid and severe environments such as wharf platforms.

The invention discloses a butterfly valve with fast adjusting and precise positioning functions. The butterfly valve comprises a base. The top of the base is fixedly connected with the bottom of the side surface of a valve body. Both the left side and the right side of the inner side wall of the valve body are sleeved with valve rod bearings. The opposite sides of the two valve rod bearings are movably connected through a main valve rod. The side surface of the main valve rod is fixedly connected with one side of a water-stop plate. One side of the water-stop plate is fixedly connected with areinforcing plate. The reinforcing plate is sleeved with the main valve rod. According to the butterfly valve, through cooperative use of a guide rod, a stop dog, limiting grooves, an inserting rod, an extrusion spring, sliding blocks and telescopic rods, when the water-stop plate in the butterfly valve needs to be adjusted quickly, an operating wheel is pulled, the inserting rods are extruded bythe limiting grooves in the guide rod, the sliding blocks extrude the extrusion spring, and then the inserting rod can be inserted into the limiting groove in the right side, so that the guide rod canbe fixed in a through groove, operation of the equipment is facilitated, and the purposes of quick adjustment of the flow and precise control over the flow can be achieved.

The invention provides a fabricated prefabricated comprehensive pipe gallery and a mounting method. The fabricated prefabricated comprehensive pipe gallery is formed by assembling a plurality of prefabricated pipe joints; each prefabricated pipe joint comprises a bottom plate, a top plate, a first side plate and a second side plate; connecting cavities are formed in the connecting positions of every two of the bottom plates, the top plates, the first side plates and the second side plates; a connecting part and a plugging device are arranged in each connecting cavity; an outer vertical plate which is bent downwards is arranged at the outer side, forming a connecting cavity structure, of the top plate, and an outer vertical plate which is bent upwards is arranged at the outer side, forminga connecting cavity structure, of the bottom plate; an expansion joint is formed between the outer vertical plate on the top plate and the outer vertical plate on the bottom plate; and the expansion joint is in water-stop sealing connection. According to the fabricated prefabricated comprehensive pipe gallery and the mounting method, the structure is reasonable, assembly is convenient and fast, connection is stable, waterproof and reliable, the applicability is extremely high, the steps of the construction method are simple, and the operability is extremely high.

The invention discloses a double-groove adhesive layer rapid application device for an LED outdoor screen. The rotating shaft at the top and the middle of the body is consistent with the center of the action arm. There are four expansion arms and they are evenly fixed around the action arm. The end of the expansion arm is closely fitted with the anti-skid head through bolts, and the bottom of the body is welded to the base. , the glued boom is fixed on the top of the moving arm and the two communicate with each other through wires. In summary, after the improvement of the present invention, the glued boom is used to mechanize and quickly waterproof the edge of the LED light board. The way of groove is waterproof and more stable, and the interface is more flush.

The invention relates to the technical field of safety intelligent locks, and discloses a household safety intelligent lock with waterproof performance, which comprises a mounting frame and a door plank, the mounting frame is located on one side of the door plank, a control mechanism is arranged in the mounting frame, a water absorption mechanism is arranged on the outer side of the control mechanism, and a cleaning mechanism is arranged between the mounting frame and the door plank. The control mechanism comprises a switch button, a control panel, a fixing frame, a detection element, a sliding block, an elastic plate and a clamping block, the fixing frame is located on the inner side of the mounting frame and makes contact with the mounting frame, and the control panel is located on the inner side of the mounting frame and connected with the mounting frame. According to the invention, the door lock can be conveniently controlled, and compared with a common intelligent lock, the intelligent lock has the advantages that the interior of the intelligent lock can be protected, water is prevented from entering the intelligent lock, and the attached sealing performance of the intelligent lock and a door can be ensured.

The invention relates to a manufacturing method of a rainproof, fireproof, ventilating and environment-friendly folium artemisiae argyi warehouse. The manufacturing method specifically comprises the following steps: (1) site selection; (2) foundation engineering; (3) pile column engineering; (4) cross beam arrangement; (5) circummure engineering; (6) door and window arrangement; (7) tempered glasswall; (8) tempered glass roof, wherein the top is closed through tempered glass. The manufacturing method has the advantages that the environmental protection advantage of the folium artemisiae argyiwarehouse is achieved through construction material selection and construction structure innovation; and the ground can be prevented from being affected with rain and damp, light transmission, warm keeping, Yang Qi rising, temperature uniformizing at four seasons, firmness and waterproofing of the glass warehouse are facilitated, the periphery and the top are conveniently irradiated by sunlight,three doors in the north and south are regularly open, thus the dampproof and fireproof effects are achieved, and in addition, the wide doors are suitable for the situation that carts directly transport raw materials into the warehouse.

The invention is suitable for the technical field of underground projects and provides a shield counter force device and a shield initial operation method. The shield counter force device comprises asupporting frame, a steel ring, a plurality of counter force pieces and a benchmark ring, wherein the steel ring is fixedly installed on the supporting frame; one end of each counter force piece is obliquely inserted into surrounding rock of an underground excavation section tunnel, and the other end of each counter force piece is fixedly connected with the steel ring; and the benchmark ring is arranged to be coaxial with the steel ring and is fixedly connected with the steel ring, and the benchmark ring is used for transmitting reaction thrust to a shield tunneling machine through negative annular tube segments. In the tunneling direction of the underground excavation section tunnel, the positions where the counter force pieces are inserted are located in front of the steel ring, and thecounter force pieces are connected to the steel ring and are evenly distributed along the periphery of the steel ring. In the shield counter force device and the shield initial operation method, the shield counter force device can provide stable reaction thrust to the tunneling machine. Besides, damage to a lining structure in an underground excavation station can be avoided, the safety of the structure of the underground excavation station is improved, the social and economic benefits are remarkable, and the development prospects are wide.