54 results about "Luting agent" patented technology

The invention relates to a light-cured dental resin adhesive containing a silane coupling agent modified monomer as well as preparation and application of the light-cured dental resin adhesive. The dental resin adhesive comprises a resin matrix, an organic polymer and a photoinitiator, wherein the resin matrix consists of methacrylate resin grafted and modified by a silane coupling agent and unmodified methacrylate resin. According to the method, the isocyano group of the silane coupling agent is selected to react with the hydroxyl group on the resin monomer to generate the silane modified grafted resin monomer, and the method is simple, low in equipment requirement and suitable for large-scale production; the obtained dental resin adhesive can be internally covalently cross-linked to enhance the self mechanical property, can also be chemically bonded with a bonding substrate by utilizing a grafted silane coupling agent to improve the interface bonding strength, is especially suitable for being used as an enamel bonding material, and can remarkably improve the service life and the curative effect of a bonded restoration.

The invention discloses a lifting type sealing gasket. The lifting type sealing gasket comprises a functional layer and a bonding layer, one of the functional layer and the bonding layer is provided with an electromagnetic induction heating sheet, and the bonding layer is provided with an adhesive sealing layer; the bottom surface of the functional layer and the top surface of the bonding layer are strongly bonded and compounded through an adhesive, and one of the bottom surface of the functional layer and the top surface of the bonding layer is directly coated with a release block formed by a release coating; the functional layer is provided with a hollow area, a primary tearing area and a re-pressing sealing area, the primary tearing area is provided with a lifting part and a lifting neck part which are connected, the hollow area is adjacent to the lifting part, the re-pressing sealing area surrounds the hollow area and the primary tearing area, and the edge of the primary tearing area is provided with a primary tearing line. The sealing structure has the advantages of being convenient to open and good in sealing effect when being pressed and sealed again.

The invention relates to the technical field of children oral medicine and digital oral cavity restoration, and discloses a preparation method of a 3D printed ceramic resin gap retainer, which comprises the following steps: scanning the oral cavity of a child patient at a speed of 15-20 frames per second by using an oral cavity digital impression instrument, obtaining an intraoral three-dimensional digital model containing an odontoprisis space and adjacent abutment teeth, and generating an STL file; the STL file is imported into Exocad Dental CAD software, an adhesive space of 0.1-0.2 mm is reserved for filling an undercut, and a bridge body structure is designed after an in-position track is determined; photocuring ceramic resin is selected, and printing is conducted in a curing printer with a 405 nm light source, the exposure time of 2.5-3.5 s / layer and the layer thickness of 0.05 mm. The preparation method of the 3D printed ceramic resin gap retainer aims to solve the problems that in the traditional gap retainer manufacturing process, a child patient fetches a mold uncomfortably, and a finished belt ring is poor in fitting degree and large in error.

The invention relates to a developer carrier and a method for manufacturing the same. The developer carrier includes a shaft, a magnet, a sleeve, a flange, and an adhesive, the flange includes a first fitting portion, a second fitting portion, and a groove portion, the adhesive is disposed in the groove portion, and the first groove portion, the second groove portion, and the third groove portion are continuously formed in this order from the first fitting portion side toward the second fitting portion side. The height from the bottom surface of the second groove portion to the outer peripheral surface of the first fitting portion is higher than the height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion, and the height from the bottom surface of the third groove portion to the outer peripheral surface of the first fitting portion is lower than the height from the bottom surface of the second groove portion to the outer peripheral surface of the first fitting portion. The height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion is equal to or higher than the height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion.

The invention relates to the field of fracture prevention of 3D printing sand cores, in particular to a method for preventing a superfine 3D printing sand core from being fractured. In order to solve the problems that in the prior art, the strength is increased in the mode that a core bar penetrates through a sand core, but a gap between the core bar and the sand core cannot be effectively eliminated, and the fracture trend of the 3D printing sand core is increased, the invention provides the anti-fracture method for the superfine 3D printing sand core. The special core bar has the following beneficial effects in the aspect of solving the problem of breakage of a sand core with a superfine structure: after a casting is knocked out, the core bar is naturally separated and can be recycled and reused; the core bar blank is convenient to obtain and simple to process, and the cost is effectively saved. The special core bar is high in practicability, and sand cores with similar structures can be flexibly adjusted and used; bonding agents are filled inside and outside the special core bar to be seamlessly connected with the sand core, and the strength of the sand core is improved through overall hardening.

The utility model discloses a runner, core box and loose piece integrated device, and belongs to the technical field of casting. A runner core box loose piece integrated device comprises a loose piece set, the two sides of the back of the loose piece set are convex faces, the convex faces are dovetail type convex faces, the convex faces and the loose piece set are integrally formed, the loose piece set comprises a loose piece I and a loose piece II, the bottom of the loose piece I is connected with the top of the loose piece II through an adhesive, and the bottom of the loose piece I is connected with the top of the loose piece II through the adhesive. And the back surface of the loose piece group is connected with the runner core box mold in an embedded manner. According to the utility model, the movable block I and the movable block II are firstly assembled and then are embedded into the runner core box mold for curing, so that the movable blocks are convenient to mount, the mounting efficiency of the movable blocks is improved, the positioning effect is good, the positions of the sand core movable blocks are not staggered, and the defects of loose positions, missing blocks and the like are greatly improved.

The invention provides a shoulder collar lining connecting tool assembly. The shoulder collar lining connecting tool assembly comprises a workbench, a fixing assembly, an adhesive assembly and an ironing assembly. The upper surface of the workbench has a processing surface; the fixing assembly comprises a fixing plate and a positioning plate, the fixing plate and the positioning plate are rotationally arranged on the two sides of the machining face respectively, the fixing plate and the machining face are matched to clamp fabric, the fixing plate is provided with a glue hole extending along a glue dripping track, the positioning plate is provided with a positioning hole for containing a lining, and the lining is arranged in the positioning hole. The fixing plate and the positioning plate are alternately attached to the machining face up and down. The adhesive assembly is used for arranging an adhesive in the adhesive hole; the ironing assembly is used for ironing the lining and the fabric. According to the shoulder collar lining connecting tool assembly, a worker only needs to operate the steps of rotating the fixing plate, starting mucilage glue, rotating the positioning plate and starting ironing, the technical requirement is lowered, and the machining quality is improved.

This invention relates to an actuator, a pump, and a method for manufacturing an actuator. The actuator (11) comprises a vibrating component (21), a frame (23), and an adhesive (241). The vibrating component (21) has a main surface (F211) and a main surface (F212), and a piezoelectric element (30) is mounted on the main surface (F211). The vibrating component (21) is plate-shaped and has an outer edge (212) that, when viewed from above, is larger than the piezoelectric element (30) and does not abut against the piezoelectric element (30). The outer edge of the frame (23) is smaller than the vibrating component (21). The adhesive (241) bonds the main surface (F212) at the outer edge (212) of the vibrating component (21) to the frame (23). When viewed from above, the outer edge of the frame (23) is smaller than the outer edge (212) of the vibrating component (21). The frame (23) has a protrusion (239) that protrudes partially from the outer edge to the outer side.

This invention provides an adhesive bonding device, comprising a conveying assembly for conveying a first clamp and a sample, the first clamp having an end to be coated; a first dispensing assembly disposed on one side of the conveying assembly for dispensing adhesive onto the end to be coated; a transfer assembly disposed on one side of the conveying assembly for transferring the sample to the end to be coated; a second dispensing assembly disposed on one side of the conveying assembly for dispensing adhesive onto the end of the sample away from the first clamp, thus making that end of the sample away from the first clamp the bonding end; and a release assembly disposed on one side of the conveying assembly, comprising a receiving structure and a release structure, the receiving structure having a receiving cavity and a release port communicating with each other, the receiving cavity for receiving a second clamp, and the release structure for placing the second clamp onto the bonding end through the release port. This invention effectively solves the problem of low efficiency in the prior art for workers bonding rubber samples.

This invention belongs to the field of medical materials, specifically relating to a patterned bio-barrier membrane with self-adhesive function and its preparation method. The preparation method includes: dissolving the adhesive matrix in a buffer solution, then adding reactive amino acids and a stabilizer to obtain a first mixture; adding ethanol and a hydrophobic agent to the first mixture, and stirring under heating conditions to obtain a second mixture; adding a thickener, a calcium supplement, and a reinforcing agent to the second mixture, continuing stirring, and then adding a protein precipitation reagent to precipitate the mixture, obtaining a hydrogel; covering a collagen membrane with a patterned porous mold, and adding the hydrogel to allow it to flow into the pores and solidify. This invention achieves precise adhesive loading through patterned design, combining advantages such as simple operation, reliable fixation, good biocompatibility, and high osteogenic efficiency, effectively solving the barrier membrane fixation problem in GBR technology, and is suitable for bone defect treatment in dental implant prosthesis restoration.

The utility model relates to the technical field of heat exchangers, in particular to a novel flexible graphite corrugated tooth composite gasket, which is formed by machining upper corrugated teeth on the upper surface and the lower surface of a planar steel plate or steel belt respectively. Graphite is adhered to the upper surface and the lower surface of the gasket through an adhesive, so that a graphite layer is formed on each of the upper surface and the lower surface of the gasket; a parting strip assembly is further arranged on the inner side of the gasket. When the corrugated tooth gasket is used, the compression ratio of the corrugated tooth gasket can be provided through the graphite layer, the rebound rate of the corrugated tooth gasket can be guaranteed through the gasket metal framework, the gasket can keep strong sealing, and it can be guaranteed that the sealing effect is not affected under the condition of pressure and temperature fluctuation.

The present application relates to waterproof construction technology field, specifically to a kind of waterproof roll and its construction method.The waterproof roll includes roll body, and roll body is equipped with first connecting portion and / or second connecting portion;First connecting portion is connected with the second connecting portion of adjacent waterproof roll, and second connecting portion is connected with the first connecting portion of adjacent waterproof roll;First connecting portion includes first base material, at least two insertion slots in first base material and recess between adjacent two insertion slots, and second connecting portion includes second base material, at least two insertion parts in second base material and convex part between adjacent two insertion parts, the depth direction of insertion slot and recess is parallel to the thickness direction of roll body, insertion slot and insertion part are connected with stopper, recess and convex part are connected with stopper;Recess bottom and the top surface between convex part are equipped with adhesive layer, and adhesive layer is the structure layer that metal dense net and adhesive are made into by electromagnetic induction welding.

The invention relates to a developer carrier and a method for manufacturing the same. The developer carrier includes a shaft, a magnet, a sleeve, a flange, and an adhesive, the flange includes a first fitting portion, a second fitting portion, and a groove portion, the adhesive is disposed in the groove portion, and the first groove portion and the second groove portion are sequentially formed continuously from the first fitting portion side toward the second fitting portion side. The height from the bottom surface of the second groove portion to the outer peripheral surface of the first fitting portion is greater than the height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion.

The invention discloses a multi-material gradient bionic dental crown and a digital preparation method thereof, and belongs to the technical field of dental restoration materials and digital additive manufacturing. Comprising a dental crown body, the dental crown body is provided with a material structure of which the mechanical property continuously changes in a gradient manner along with the surface of a prepared tooth body, is formed by mixing two basic resin materials through voxel-level gradient in space, and is divided into two functional layers by imitating a double-layer hard tissue physiological structure of a natural tooth; comprising a high-wear-resistance bionic enamel layer used for forming the outer surface of a dental crown body and a high-toughness bionic dentin layer used for forming the dental crown body and connecting the high-wear-resistance bionic enamel layer and the surface of a prepared tooth body. By simulating a gradient structure of a natural tooth and a crack inhibition mechanism of the enamel-dentin boundary (DEJ), the fracture toughness and the anti-fatigue life of the dental crown body are far better than those of a traditional single-layer or layered all-ceramic crown, and thermal stress and mechanical stress are effectively buffered through modulus matching of the high-toughness bionic dentin layer and a resin adhesive.

The invention discloses a 3D printing correction device for correcting unilateral positive locking in a tooth replacement period. The 3D printing correction device comprises an upper jaw correction assembly and a lower jaw correction assembly, the maxillary orthodontic component comprises a 3D printing metal linked crown matched with the orthodontic side dentition, a resin base matched with the non-orthodontic side and the palate side, and a spiral expansion device connected with the 3D printing metal linked crown and the resin base, and the spiral expansion device is configured to apply an arch contraction force to the orthodontic side dentition; the lower jaw correction assembly comprises a lower jaw 3D printing metal support and a lower jaw resin retention layer, the lower jaw 3D printing metal support forms a metal belt ring structure on the non-positive locking side and extends on the positive locking side to form a long arm hook structure, and the outer surface of the metal belt ring structure and the surfaces of teeth on the non-positive locking side are coated with the lower jaw resin retention layer. According to the invention, digital design and 3D printing technology customization are utilized, the device is fixed in the mouth through an adhesive, and the device has the characteristics of good retention force, small size, low compliance to patients, and capability of effectively preventing extension of rear teeth and shortening the treatment period.

This invention relates to coil components that improve the bonding strength between the core and the top plate. The surface roughness of the top surface (9, 10) of the flange portion of the core is different from the surface roughness of the lower main surface (15) of the top plate (14). For example, the surface roughness of the lower main surface (15) of the top plate (14) is less than the surface roughness of the top surface (9, 10) of the flange portion of the core. A protrusion (21) protruding from the lower main surface of the top plate with the smaller surface roughness and contacting the top surface of the flange portion of the core is provided in the area where the lower main surface of the top plate and the top surface of the flange portion of the core face each other, separated by an adhesive. The protrusion increases the surface area of ​​the bonding surface of the top plate with the smaller surface roughness and provides an anchoring effect of the adhesive relative to the top plate. Furthermore, since the protrusion itself is held in place, the shear strength in the extending direction of the opposing surfaces of the top plate and the core is improved.

The present application relates to an actuator, a pump, a manufacturing method of an actuator. The actuator (11) is provided with a vibration member (21), a frame (23), and an adhesive (241). The vibration member (21) has a main surface (F211) and a main surface (F212), and a piezoelectric element (30) is mounted on the main surface (F211). The vibration member (21) is plate-shaped, and is provided with an outer edge portion (212) which is larger than the piezoelectric element (30) in a plan view, and does not abut against the piezoelectric element (30). The frame (23) is smaller than the vibration member (21) in an outer edge shape. The adhesive (241) adheres the main surface (F212) at the outer edge portion (212) of the vibration member (21) to the frame (23). In a plan view, the frame (23) is smaller than the outer shape of the outer edge portion (212) of the vibration member (21) in an outer edge shape. The frame (23) is provided with a protrusion (239) which partially protrudes outward from the outer edge.

The utility model discloses a traction buckle for orthodontics, which belongs to the technical field of orthodontics and comprises a base, the base comprises a concave bonding surface, an annular edge and a multi-channel flow guide component, the bonding surface, the annular edge and the multi-channel flow guide component are arranged on the same side of the base, and the annular edge and the multi-channel flow guide component are arranged on the same side of the base. The multi-channel flow guide assembly is arranged between the annular edge and the bonding surface, and an edge groove is formed in the annular edge; and the functional part is connected with the base through a connecting part. According to the traction buckle, by arranging the multi-channel flow guide assembly, an adhesive can flow to the outside of the base from any point on the bonding face, it is ensured that the adhesive layer is evenly distributed in the bonding process, and the problem that in the prior art, a traction buckle is prone to falling off when subjected to correction force is solved.

According to the present invention, a method is provided that can suppress the performance degradation (decrease in lubrication performance over time) of a primer composition containing a curing accelerator and a lubricant (e.g., stamping oil) and can improve the curing speed and bond strength of an anaerobic curing adhesive. The present invention relates to a primer composition comprising component (A) and component (B), wherein component (A) comprises a (A-1) metal complex, and component (A) is 35 parts by weight or less relative to 100 parts by weight of component (B); component (A) is a curing accelerator for an anaerobic curing adhesive; and component (B) is a lubricant.

This application discloses a dental prosthesis and its fabrication method. The method includes: fabricating a gold alloy inner crown using a lost-wax casting process; fabricating a glass-ceramic outer crown using 3D printing or CAD / CAM cutting equipment; sequentially performing surface sandblasting, applying a metal surface treatment agent, and applying a light-curing adhesive on the bonding surface of the gold alloy inner crown; treating the bonding surface of the glass-ceramic outer crown with acid etching and a silane coupling agent; and finally bonding and fixing the glass-ceramic outer crown to the gold alloy inner crown using adhesive resin. This application uses a cold bonding system to achieve the molding of the gold alloy inner crown and the glass-ceramic outer crown, replacing the traditional high-temperature sintering process. This eliminates the potential for thermal stress at the source, avoiding problems such as porcelain chipping, inner crown oxidation, and edge deformation caused by high temperatures, while preserving the mechanical properties of the gold alloy and the aesthetic properties of the glass-ceramic.

The present invention provides a catheter which reduces the possibility of the shaft tube from the hub portion of the proximal end when injecting a contrast medium at high pressure or pulling out the catheter shaft tube inserted into the body. By directly fusing the shaft tube (10) with the hub portion (20) at the shaft tube housing portion (22) which houses the base end of the shaft tube and the vicinity of the base end and making somewhere in the fusion surface (40) the minimum inner diameter of the shaft tube housing portion (22), it is possible to prevent the shaft tube (10) from being separated from the hub portion (20), and without using an adhesive, to ensure the safety of the operator and further improve the yield, reduce the manufacturing cost and the cost required for safety.

The invention relates to the technical field of chemical pipeline body maintenance, and discloses a glass fiber reinforced plastic coated under-pressure leaking stoppage device and a construction method.The glass fiber reinforced plastic coated under-pressure leaking stoppage device and the construction method are integrally used for conducting under-pressure leaking stoppage on a pipeline body and comprise a leaking guiding assembly and a bonding fixing assembly, and the leaking guiding assembly comprises a leaking guiding short pipe; a leakage guiding valve is arranged on the leakage guiding short pipe, and the bonding and fixing assembly is used for bonding and fixing the leakage guiding short pipe and the pipeline body. In order to avoid the risk of fire explosion in the process of leaking stoppage of the chemical pipeline under pressure and improve the connection stability of the leakage guiding assembly and the pipeline body, the leakage guiding assembly is fixed without fire by adopting an epoxy modified polyurethane adhesive; and meanwhile, circumferential tooth-shaped protrusions are arranged at the arc-shaped attaching ends of the leakage guiding short pipes to increase the bonding contact area, the temporary positioning mode of the leakage guiding short pipes is achieved in cooperation with a temporary fixing mechanism, and therefore no welding spark exists in the whole leakage stopping process, and the hidden danger of burning explosion of flammable and explosive media is eliminated.

The utility model discloses an assembly for bonding an implant abutment and an upper dental crown, which comprises an upper dental crown structure, an implant abutment structure is arranged below the upper dental crown structure, the upper dental crown structure comprises an upper dental crown body serving as a body, and a connecting block is fixedly mounted at the bottom of the upper dental crown body in an embedded manner. According to the bonding assembly for the implant abutment and the upper dental crown, through the arrangement of the upper dental crown structure, the problem that an existing implant abutment and an existing upper dental crown are generally placed separately, so that the implant abutment and the upper dental crown cannot be separated from each other is solved; in the prior art, an implant abutment and an upper dental crown need to be fixedly mounted through adhesion during use, but when an adhesive is generally adopted for adhesion and fixation in the prior art, the adhesive needs to be cured for a long time and possibly is not easy to remove, and the condition that the periphery of the implant is inflamed is caused.

The utility model discloses a fixing device for stone bonding, which belongs to the technical field of stone bonding and comprises a frame, two bonding plates are arranged in the frame, opposite sides of the two bonding plates are fixedly connected with supports, and a bonding component is arranged between the two bonding plates. According to the stone cleaning device, the bonding assembly is arranged, the motor drives the two bonding plates to be close to each other through the first lead screw, the cleaning roller makes contact with the stone surface of the bonding roller, meanwhile, the first belt wheel drives the transmission shaft to rotate through the second belt wheel, the worm drives the worm wheel to rotate, and the second lead screw drives the cleaning box to ascend; the cleaning roller and the bonding roller are used for cleaning the surface of the stone, coating the adhesive and removing dust and other impurities on the surface of the stone, so that the adhesive can be fully and uniformly coated on the surface of the stone, the bonding strength is remarkably improved, poor bonding is prevented, and the bonding quality is improved.

A method for the manufacture of a prosthesis of individual pre-formed denture prosthesis teeth (14) and of a plastic material for forming a prosthesis base (12) wherein the teeth are embedded in pockets (20) and adhesively bonded, wherein the prosthesis base (12) is made by a CAD / CAM process, characterized in that the method comprises: - a first milling step (MS1), wherein an occlusal side (17) of the prosthesis base (12) is milled down so as to form the pockets (20) therein, wherein the pockets remain closed at their base after the first milling step for the insertion of the teeth; - an insertion step (IS), following the first milling step (MS1), wherein each tooth (14) is inserted, such as manually inserted, and fixed in a distinct pocket (20) for said tooth without prior trimming of said tooth; -a second milling step (MS2), following the insertion step (IS), wherein the basal side (18) of the prosthesis base (12) is subsequently milled down, such as for wear; wherein at least the first and second milling steps (MS1, MS2) occur in an automated milling machine, and wherein in the first milling step (S1) the pockets are milled such that the inner surface of each pocket conforms to the substantially entire contour of the base of a corresponding preformed tooth for receiving said tooth therein.

1. The name of the design product: dental curing light (DR-1129). 2. The use of the design product: special equipment for dental treatment, which makes dental materials (such as composite resin, adhesive, etc.) rapidly solidify under the irradiation of light of a specific wavelength, thereby realizing the functions of tooth repair, bonding, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: assembly 1 perspective view 1. 5. Other components that need to be explained: including assembly 1, assembly 2.

The application discloses a structure of a fence type indirect bonding guide plate with a removable cover, a manufacturing method and application, and belongs to the technical field of oral fixed orthodontics. The application obtains a three-dimensional data model by scanning, adopts a guide plate design software, determines the bracket position of each tooth on the three-dimensional data model, designs an element for positioning the single-tooth bracket position, specifically designs the structure of the removable cover, single-axis movement and the breakable horizontal fence of the element, copies the element on each tooth position on the three-dimensional data model, connects the elements of each tooth position through a connecting piece, completes the design of the indirect bonding guide plate, and adopts 3D printing to manufacture the finished product. The indirect bonding guide plate has the advantages of easy positioning, no undercut, easy removal of the excess bonding agent, and difficulty in removing the bracket when dislocation, and is a global oral field exploration topic and a future development direction of oral diagnosis and treatment, represents the top level of modern digital medical technology, and makes oral fixed orthodontic treatment more scientific, accurate and convenient.

The invention discloses a method for increasing the bonding strength of a zirconia veneering surface, and relates to the field of materials.The zirconia is subjected to plasma treatment through a handheld plasma generator, and then the treated zirconia surface is evenly coated with a layer of resin adhesive containing an Mdp functional monomer. According to the method disclosed by the invention, the Mdp-containing resin adhesive and the argon handheld plasma are used for carrying out bonding treatment on the zirconium oxide restoration material, so that the contact angle is reduced, the surface hydrophilicity is increased, the bonding performance of zirconium oxide is improved, and the connection between the zirconium oxide veneering restoration and the tooth tissue is more stable, so that the risk of falling off of the restoration is reduced.

The utility model provides a tenon-and-mortise joint bridge body structure based on a fixed bridge, which comprises a first bridge body arranged on a first abutment tooth, a second bridge body arranged on a second abutment tooth, and a connecting assembly arranged between the first bridge body and the second bridge body, and the connecting assembly comprises a first connecting groove formed in the first bridge body, and a second connecting groove formed in the second bridge body; the connecting lug is arranged at the position, corresponding to the first connecting groove, of the second bridge body, and the limiting part is arranged between the first connecting groove and the connecting lug. By adopting a tenon-and-mortise design mode, the problem that conventional bridge repairing is difficult to implement when a plurality of abutment teeth have large undercuts or have no common path of insertion is effectively solved, an adhesive is prevented from being directly exposed to an oral environment, the service life of a bridge body is prolonged, and the stability and reliability of a repairing effect are improved; the structure has the advantages of being firm in combination, attractive, natural and controllable in precision, the repair experience and the oral health level of a patient can be improved, innovativeness and practicability are achieved, and popularization and implementation are convenient.

The utility model provides a bridge crack repairing device which comprises a repairing anchor point, a force application sleeve, a force application bolt, a butt joint port, a one-way valve and an engineering adhesive input port, the force application sleeve is fixedly installed at the bottom end of the repairing anchor point, and the force application bolt is installed in the repairing anchor point in a sliding mode and meshed in the force application sleeve through threads; the repairing anchor point, the force application sleeve and the force application bolt are embedded into a hole punched in a bridge crack; the butt joint opening is meshed with the top of the force application bolt through threads, the one-way valve is fixedly installed on the top of the butt joint opening, and the engineering adhesive input opening is fixedly installed on the top of the one-way valve. Due to the arrangement of the repairing anchor point and the force application bolt, the bridge crack can be effectively sealed, the injected adhesive cannot overflow outwards, and the adhesive can be effectively injected into the bridge crack.