495 results about "Elbow" patented technology

The invention discloses an adaptive multi-angle elbow airtightness detection method, which comprises the following steps: arranging a flexible pressure sensor array and a micro inertial measurement unit on the inner wall of an elbow, collecting multi-point sealing pressure and attitude signals in real time, fusing geometric parameters and a spatial mapping relation, and completing denoising, normalization and multi-curvature region mapping of pressure data; a distributed pressure-attitude database is combined, a function model associated with sealing pressure and pipeline geometric parameters is established, inflation, exhaust and deformation of each node are dynamically adjusted through an intelligent closed-loop regulation and control algorithm, collaborative optimization of multi-node pressure and a fitting state is achieved, and the sealing performance of the pipeline is improved. According to the method, the accuracy and the self-adaptive adjusting capacity of sealing pressure distribution under a complex bent pipe structure are effectively improved, the tiny leakage real-time positioning and self-learning optimization capacity is achieved, and the method is suitable for sealing quality guarantee of various types of curved surface pipelines.

The self-adjusting abrasive flow clamp is suitable for machining a tee joint through the abrasive flow technology and is characterized in that the self-adjusting abrasive flow clamp comprises a base, a baffle ring, a surrounding cylinder, a first arc-shaped bent pipe, a second arc-shaped bent pipe and a third arc-shaped bent pipe, opening structures are arranged at the two ends of the surrounding cylinder, a mounting hole is formed in the baffle ring, and an arc-shaped protrusion is arranged on the top face of the base; when abrasive particles enter through the third arc-shaped bent pipe, the abrasive materials flow out only through the first arc-shaped bent pipe; when the grinding materials are input through the groove, the grinding materials enter the tee joint through the second arc-shaped bent pipe and are output through the top end of the third arc-shaped bent pipe, the tee joint grinding efficiency is improved, and time consumption is reduced.

An assembly and method for preparing a pipe elbow for welding. The assembly has a cone clamping sleeve assembly adapted to be inserted into an end of the pipe elbow and a faceplate assembly removably affixed to the cone clamping sleeve assembly. The cone clamping sleeve assembly has a face at one end thereof. The face has at least one locating hole and at least one screw hole. The faceplate assembly has at least one locating pin receivable by the locating hole of the cone clamping sleeve assembly. The faceplate assembly has a captive screw threadedly received by the screw hole. The faceplate assembly has at least a pair of centering pins positioned at diametrically opposed locations on a faceplate. The centering pins are radially adjustable and adapted to bear against an inner diameter of the end of the elbow.

The utility model discloses a tool changing arm core aligning mechanism, which relates to the field of tool changing arm core aligning and comprises a tool changing arm body and a tool changing shaft used for driving the tool changing arm body to move, tool clamping elbows are fixedly arranged at two ends of the tool changing arm body, a rotating ring is rotatably arranged at the upper end of the tool changing arm body, two auxiliary tool arms are fixedly arranged on the outer side of the rotating ring, and the tool clamping elbows are fixedly arranged on the tool changing arm body. According to the utility model, through the arrangement of the rubber pad, when the auxiliary elbow and the cutter clamping elbow abut against a cutter, the impact force of the auxiliary elbow and the cutter clamping elbow on the cutter can be buffered through the rubber pad; the impact force of the auxiliary elbow and the cutter clamping elbow is prevented from being transmitted to the main shaft of the machining center through the cutter, so that the influence on the main shaft when the cutter is replaced is reduced to the maximum extent.

The utility model discloses a negative pressure valve connecting elbow of a negative pressure drainage system, and particularly relates to the technical field of elbow pipe fittings, the negative pressure valve connecting elbow comprises an elbow pipe, a straight pipe and a connecting pipe which are sequentially arranged from left to right, an extension pipe is arranged in the straight pipe, the elbow pipe is in flange connection with the straight pipe, the extension pipe is in flange connection with the connecting pipe, and a negative pressure valve is arranged on the connecting pipe. A sealing assembly is arranged at one end of the extension pipe, and an abutting disc used for abutting against the sealing assembly is arranged on the outer side of the extension pipe. A sealing plate is connected to a flange at the end, back on to the bent pipe, of the straight pipe, a first driving structure and a second driving structure are arranged on the sealing plate, the first driving structure is connected with the sealing assembly, and the second driving structure is connected with the abutting disc. The sealing assembly comprises a fixing ring, the fixing ring is fixedly connected to one end of the outer surface of the extension pipe, and the ring side of the fixing ring is sleeved with a sealing ring; the connecting elbow solves the technical problem that the installation applicability is reduced due to the fact that an existing connecting elbow does not have the installation compensation capacity.

The invention provides a method for drawing an expansion drawing of a branch pipe on an elbow, which comprises the following steps of: S1, inputting parameters of a known elbow and a branch pipe arranged on the elbow, and checking the rationality of the parameters; s2, calculating coordinates of points of a branch pipe expansion curve according to input known parameters; and S3, drawing an expanded drawing according to the point coordinates. The invention further provides an elbow upper branch pipe expansion drawing drawing device, computer equipment and a readable storage medium. According to the method, the unfolding shape of the branch pipe on the elbow is calculated through the mathematical principle, a set formula set is formed, coordinates can be calculated according to the input parameters of the elbow and the branch pipe installed on the elbow, the unfolding drawing of the branch pipe on the elbow is automatically drawn, manual drawing is not needed, the working process is simplified, the labor amount is reduced, and the working efficiency is improved. The drawing efficiency of the elbow upper branch pipe expansion drawing is greatly improved, errors possibly existing in the manual drawing process are reduced, and the drawing accuracy is improved.

The application discloses a kind of spatial three-dimensional elbow pipe measuring devices and its elbow pipe equipment and method.The application provides a kind of spatial three-dimensional elbow pipe measuring device.The spatial three-dimensional elbow pipe device includes magnet and goniometer mounting seat, and goniometer and base;The goniometer is installed on the goniometer mounting seat;The base one side is provided with first V-shaped groove, the magnet is arranged on the side opposite to the first V-shaped groove, and the goniometer mounting seat is connected to the base or the magnet, and the goniometer is installed.By directly installing spatial three-dimensional elbow pipe measuring device on elbow pipe, the bending angle of high-precision elbow pipe required by spatial position measurement is obtained, which helps to solve the technical problems in the prior art that there is no way to manufacture high-precision angle pipe under spatial angle.

The application discloses an erosion-resistant elbow and a preparation method thereof, and specifically comprises the following steps: (1) structure design and blank preparation; (2) preparation of cladding powder; (3) pretreatment; (4) laser cladding treatment; and (5) post-treatment. According to different erosion degrees of different regions of the inner wall of the elbow, different cladding layers are designed, and reasonable elbow structures and cladding materials are designed, so that the erosion-resistant performance of the inner wall of the elbow is maximally improved.

The invention relates to an outlet elbow assembly (100) for discharging a multiphase flow medium, in particular consisting of water, solids and air, in which the outlet elbow assembly comprises a pipe (101) having a first horizontal pipe section (102) which, in a mounted position, extends along a first centerline (M102) running in a horizontal direction (H), and a second horizontal pipe section (102) which, in a mounted position, extends along a second centerline (M102) running in a horizontal direction (H); a downcomer section (103) adjoining the first horizontal section (102) and extending in the installed position along a downcomer line (F) running downward; and a second horizontal pipe section (104) adjoining the downcomer section (103) and extending in the installed position along a second centerline (M104) running in the horizontal direction (H). In the installed position, the second centerline (M104) lies below the first centerline (M102) and the flow medium is guided through the pipe (101) in the flow direction (A) in the direction of the first centerline (M102), the descending line (F) and the second centerline (M104). The downcomer section (103) and / or the second horizontal section (104) are / is equipped with at least one guide element (105, 307, 406) which is designed and arranged in such a way that the flow medium can be guided substantially in the flow direction (A) and a movement perpendicular to the flow direction (A) is partially suppressed.

The invention discloses a manipulator with a pair of mechanical arm elbows capable of independently and horizontally displaceing.The manipulator comprises a base, the two mechanical arms are movably arranged on the base, and the base is further provided with a walking mechanism, a first driving shaft for driving the two mechanical arms to generate kneading action and a second driving shaft for driving the two mechanical arms to generate knocking action; the first driving shaft is sleeved with an elbow arm sleeve, the elbow arm sleeve is arranged on the driving shaft in a sleeving mode and can move in the axis direction of the driving shaft, the elbow arm sleeve and the first driving shaft are in circumferential limiting fit, and a driving unit is arranged on the base. The driving unit is connected with the elbow arm sleeve and used for driving the elbow arm sleeve to move in the axis direction of the first driving shaft, and the mechanical arm is movably connected to the outer side of the elbow arm sleeve in a sleeving mode and generates kneading action based on rotation of the elbow arm sleeve. The pair of manipulators with the mechanical arm elbows capable of independently and horizontally displacing has better adaptability to users with different body widths, and richer massage actions can be provided.

The present invention is a biarticular forearm support brace comprising a hand wrap, an arm wrap, vibrational motors, and EMG sensors. In the preferred embodiment of the present invention, the present invention further comprises medical-grade materials with elastic properties and a plurality of straps. The present invention takes the tension off the extensor muscles in the forearm by pulling the hand towards the elbow, replacing muscle function and allowing the extensor muscles in the forearm to be shortened while not being contracted.

The utility model discloses a breast cancer postoperative affected limb position adjusting device, which belongs to the technical field of medical instruments and comprises a scapular fixing pad and an affected limb adjusting pad, the scapular fixing pad is laid under the back of a patient and connected with the affected limb adjusting pad, and the affected limb adjusting pad can slide relative to the scapular fixing pad to adjust the height of the affected limb adjusting pad. A diseased limb placing cavity is formed in the diseased limb adjusting pad, the width of the diseased limb placing cavity is adjusted according to the height of the diseased limb adjusting pad, when the height of the diseased limb adjusting pad is increased, the width of the diseased limb placing cavity is synchronously increased, and when the height of the diseased limb adjusting pad is reduced, the width of the diseased limb placing cavity is synchronously reduced. The height of the affected limb adjusting pad can be adjusted according to the weight of a patient, meanwhile, the width of the affected limb containing cavity is synchronously adjusted, the hand of the patient is always higher than the elbow, the elbow is higher than the heart, backflow of blood or lymph is facilitated, and the affected limb containing cavity can be used for containing the limbs of the patient all the time.

The utility model discloses a wear-resistant and high-temperature-resistant elbow which comprises an elbow body, a gas flow channel penetrating through the other end of the elbow body from one end of the elbow body is arranged in the elbow body, a bent section is arranged in the middle of the elbow body, the bent section is defined by an outer arc-shaped area and an inner arc-shaped area, and gas flowing into the gas flow channel impacts the outer arc-shaped area and then flows out. An inner flitch plate is fixed to the inner surface of the outer arc-shaped area, the outline of the inner flitch plate is matched with the shape of the inner surface of the outer arc-shaped area, the inner flitch plate is matched with the inner surface of the outer arc-shaped area in an attached mode, a wear-resistant layer is arranged on the face, facing the gas flow channel, of the inner flitch plate, and a high-temperature-resistant layer is attached to the outer surface of the elbow body. The abrasion resistance of the inner surface of the outer arc-shaped area with the weakest abrasion resistance of the elbow can be effectively improved, and the service life of the abrasion-resistant and high-temperature-resistant elbow is greatly prolonged.

To provide a protruding member, piping member, and piping system that can improve flow rate while enabling miniaturization. [Solution] The projection member is positioned downstream of the elbow that changes the direction of the flow path, and is positioned inside a straight pipe having first and second inner surfaces with planar shapes corresponding to the inner and outer circumferences of the elbow, respectively. It has a first end facing upstream and a second end facing downstream, and a curved working surface extending from the first end to the second end such that it has a top between the first and second ends that minimizes the cross-sectional area of ​​the flow path of the straight pipe. If the distance between the first and second inner surfaces is Dv, the distance between the corner on the inner circumference of the elbow and the first end in the direction of the central axis of the straight pipe is a, b, and c, respectively, and the height at the top is h, then the following conditions are satisfied: Dv ≤ 200 mm, 0 ≤ a ≤ 0.2 Dv, 0.1 Dv ≤ b ≤ Dv, 0.2 Dv ≤ c ≤ 3.0 Dv, and 0.05 Dv ≤ h ≤ 0.70 Dv.

A corrective device for relieving pain in the neck, shoulder, and upper back regions of the human body. More particularly, the corrective device comprises two arm support foam pads, a neck support pad, and a tummy support pad, each of the four support pads having adjustable straps to accommodate different body sizes and varying arm positions. In operation, the user lies face down between the arm support pads, positions their arms on the support pads with elbows on the pads, places their chin on the neck support pad, and positions the tummy support pad under their navel. The adjustable straps allow for customization to the user's body dimensions. The device may provide relief from neck, shoulder and upper back pain, and may correct conditions such as Kyphosis Hump and Rounded Shoulders.

The utility model discloses a pipe blocking prevention device for a pump truck, which relates to the technical field of engineering machinery and comprises a bent pipe and a delivery pipe, a mounting hole is arranged at the bend of the bent pipe, a connecting pipe is fixed on the outer side of the mounting hole, a support block is inserted at the upper end of the inner wall of the connecting pipe in a sliding manner, and the lower end face of the support block is connected with an elastic support component. A fixing cylinder is installed on the side wall of the bent pipe, and one end of the fixing cylinder is connected with a pulse valve. In the utility model, the pressure sensor is used for detecting the pressure generated by the material at the outlet of the conveying pipe and transmitting the pressure information to the controller, when the pressure is reduced, the material is blocked at the bent pipe, the controller controls the pulse valve and the electromagnetic vibrator to be intermittently opened and closed, and the electromagnetic vibrator drives the support spring and the electromagnetic vibrator to vibrate; and meanwhile, the high-pressure gas intermittently enters the fixed cylinder, and impact waves generated by the high-pressure gas impact the blocked materials, so that the problem of pipeline blockage can be effectively solved.

The present invention concerns extensible absorbent wound dressings. The wound dressing has a wound contact layer having a proximal surface facing toward the wound and a distal surface facing away from the wound, and a backing layer having a proximal surface facing toward the wound and a distal surface facing away from the wound, the backing layer having an absorbent region located on a proximal surface thereof, the absorbent region comprising a plurality of discrete absorbent members, wherein the backing layer is configured to be positioned over the wound contact layer, such that the absorbent region is located adjacent to the distal surface of the wound contact layer, and wherein the absorbent region and the wound contact layer are configured to be detached at least in an area inside a perimeter of the absorbent region. The absorbent wound dressings of the present invention can be used to dress so-called truly three-dimensional anatomical areas, such as for example a knee or an elbow.

A patient interface for delivering a flow of air at positive pressure relative to ambient air pressure to an entrance to the patient's airways to ameliorate sleep disordered breathing comprises a seal-forming structure to form a seal with a region of the patient's face surrounding an entrance to the patient's airways, a positioning and stabilising structure to provide a force to hold the seal-forming structure in a therapeutically effective position on the patient's head, and a connector assembly adapted to connect to an air circuit. The connector assembly comprises a loop member removably and releasably secured in an aperture of an attachment region of the patient interface and an elbow assembly connected to the air circuit and repeatedly connectable to and detachable from the loop member. The elbow assembly comprises an elbow member and a clip member. The clip member comprises a structure separate and distinct from the elbow member and is connected to the elbow member and releasably connects the elbow assembly to the loop member, the elbow member forming a seal with the loop member when the elbow assembly and loop member are connected to each other.

An assembly and method for preparing a pipe elbow for welding. The assembly has a cone clamping sleeve assembly adapted to be inserted into an end of the pipe elbow and a faceplate assembly removably affixed to the cone clamping sleeve assembly. The cone clamping sleeve assembly has a face at one end thereof. The face has at least one locating hole and at least one screw hole. The faceplate assembly has at least one locating pin receivable by the locating hole of the cone clamping sleeve assembly. The faceplate assembly has a captive screw threadedly received by the screw hole. The faceplate assembly has at least a pair of centering pins positioned at diametrically opposed locations on a faceplate. The centering pins are radially adjustable and adapted to bear against an inner diameter of the end of the elbow.

The utility model discloses a pipeline quick connecting device with a three-way elbow, which belongs to the technical field of pipeline connection and comprises a pipeline and the three-way elbow connected with the pipeline, a joint and a lantern ring screwed outside the joint are arranged at the connecting end of the three-way elbow, a first thread is arranged on the outer wall of the joint, and a second thread is arranged on the outer wall of the lantern ring. The front end of the connector is provided with three segmented arc-shaped pieces, the rear end of the connector is of a pipeline-shaped structure, and segmented second threads are arranged in the lantern ring. According to the quick pipeline connecting device with the three-way elbow, the lantern ring is in threaded connection with the three-way connector, the three-section arc sheet type structure at the front end of the connector is used for wrapping a to-be-connected pipeline in the connector, and the to-be-connected pipeline and the connector are locked in cooperation with the lantern ring; meanwhile, sealing rings are arranged on the lantern ring and the connector, the sealing performance of the position of the connector is guaranteed, and leakage is avoided; meanwhile, a plurality of sealing rings are arranged, so that the friction at the joint can be increased, and the joint cannot be loosened.

This application discloses a three-dimensional posture corrector with wrist support function, belonging to the field of posture correction technology. In the embodiments of this application, by setting a transition surface or support part, it can be used to rest the wrist and / or elbow, providing sufficient support for the user's arm to improve the situation where the wrist and / or elbow are suspended or pressed against the side of the writing board, guiding the user's wrist to exert force correctly, thereby improving the comfort of using the writing board and improving the user's posture correction effect.

The application belongs to the technical field of arc extinguishing chamber of circuit breaker, and relates to a double-acting arc extinguishing chamber, a switching-on and switching-off method and a circuit breaker. The double-acting arc extinguishing chamber comprises a moving contact, a static contact and a transmission mechanism. The static contact comprises a static support, a static arc contact and a static main contact. The moving contact comprises a moving main contact, a moving arc contact and a nozzle. The transmission mechanism comprises an upper driving rod, an upper elbow arm rod, a lower driving rod, a lower elbow arm rod, a rotating rod and a driving rod. One end of the upper driving rod is hingedly connected to the upper part of the nozzle, and the other end is hingedly connected to the upper end of the upper elbow arm rod. One end of the lower driving rod is hingedly connected to the lower part of the nozzle, and the other end is hingedly connected to the lower end of the lower elbow arm rod. The lower end of the upper elbow arm rod is hingedly connected to one end of the rotating rod, and the upper end of the lower elbow arm rod is hingedly connected to the other end of the rotating rod. The middle position of the rotating rod is hingedly connected to one end of the driving rod, and the other end of the driving rod is connected to the static arc contact. The problem of vibration caused by the instability of the linear motion of the static arc contact and the quick-return characteristic of the existing structure due to the unbalanced structure of the transmission rod is solved.

1. The name of the designed product: knitted protective elbow. 2. The use of the designed product: for protecting the elbow when exercising or training. 3. The design points of the designed product: in the combination of shape and color. 4. The picture or photo that best shows the design points: the combined state reference drawing. 5. The design to be protected contains color.

A region extraction device acquires a first frame image and a second frame image which are continuous in time. The region extraction device acquires motion information indicating a region in which motion exists within the first frame image, based on the acquired first frame image and the second frame image. The region extraction device detects positions of an elbow and a wrist of a human body from a region in which motion exists indicated by the acquired motion information, based on the acquired first frame image. The region extraction device extracts a region corresponding to a portion of a hand side of the human body from the wrist from the region in which motion exists indicated by the acquired motion information, based on the detected positions.

The invention discloses a building drainage system pressure stabilizing device and method based on S-shaped center deviation design, and belongs to the technical field of building drainage. In order to solve the problem that pressure fluctuation is large when a traditional S-shaped pipeline drains water, the device is composed of an S-shaped pipe, a thickened connector, an annular clamping groove, a sealing ring, a straight pipe cavity, a bent pipe cavity, a spiral blade and a flow guide plate. The S-shaped pipe is made of a high-density polyethylene material, and the inner wall of the S-shaped pipe is coated with a silver ion nano antibacterial coating; the inner wall is provided with an annular clamping groove which is clamped with an ethylene propylene diene monomer sealing ring; the inner wall of the straight pipe cavity is provided with annular array spiral blades, and the inner wall of the bent pipe cavity is provided with a flow guide plate matched with the bending degree. Water flow forms spiral wall-attached flow through the spiral blades, the spiral wall-attached flow and the central air core are directionally guided through the guide plates, the pipeline pressure is stabilized, smooth drainage is guaranteed, and the blocking risk is reduced.

The utility model discloses a kind of elbow and gauges, it is related to automobile manufacturing technical field, gauge includes bottom plate, several support plates for supporting elbow are arranged on bottom plate, still include two first locating clamps, two second locating clamps and several locating pins;The inner side wall of two first locating clamps is respectively connected with the two sides of each support plate located in longitudinal section, and first locating clamps are provided with the first locating hole corresponding to each first through hole one by one;The inner side wall of two second locating clamps is respectively connected with the two sides of each support plate located in horizontal section, and second locating clamps are provided with the second locating hole corresponding to each second through hole one by one;Locating pin is inserted in corresponding first locating hole and first through hole, or corresponding second locating hole and second through hole.The utility model designs a set of elbow process gauge, can effectively monitor elbow process, timely adjustment is carried out if abnormality is found, improves output efficiency and product quality.

The application provides a positioning pipe pre-arrangement platform for simple and easy elbow pre-arrangement, which comprises a workbench, a ground rail, a positioning end head, a column sliding table tool, a pipe support sliding table tool and a positioning pulley; the ground rail is fixedly installed on the workbench, and the positioning pulley is slidably connected with the ground rail; the positioning end head is fixed at the end head of the ground rail; the column sliding table tool comprises a sliding table, an elbow clamp and a positioning pillow; the sliding table is slidably connected with the ground rail, the elbow clamp is fixed on the sliding table and used for fixing a column part, and the positioning pillow is fixed on the sliding table and used for bearing a part to be installed; the pipe support sliding table tool comprises a wedge sliding block, a positioning pillow, a sliding table and an elbow clamp; the sliding table is slidably connected with the ground rail, the elbow clamp is fixed on the sliding table and used for fixing the wedge sliding block, the wedge sliding block is fixedly connected with the sliding table and used for positioning and connecting the part to be installed, and the positioning pillow is fixed on the sliding table and used for bearing the part to be installed. The application has the beneficial effects of improving the precision of manual pre-arrangement positioning pipes, reducing the pre-arrangement cost and operation difficulty.

The utility model belongs to the technical field of fire fighting equipment, and discloses a multipurpose water gun which comprises a connecting pipe, an elbow and a puncture head, and a connecting mechanism is arranged on the connecting pipe; the connecting mechanism comprises a mounting pipe, a fixed frame, a movable frame, a fixed cylinder and a clamping plate, the mounting pipe is integrally formed at one end of the connecting pipe, the fixed frame is welded and fixed to the outer wall of the mounting pipe, the movable frame is slidably mounted on the inner wall of the fixed frame, the fixed cylinder is fixedly mounted at the top of one side of the movable frame, and the clamping plate is fixedly mounted at the bottom of one side of the movable frame; according to the utility model, the connecting mechanism is arranged, the elbow and the interface of the interface pipe at the bottom of the puncture head are positioned on the side surface, the joint of the mounting pipe is transversely connected with the interface on the side surface of the interface pipe through bending, and the other side of the interface pipe is fixed through the fixing cylinder on the fixing frame; the connector pipe is fixed from the bottom of the connector pipe through the clamping plate on the fixing frame, the connection strength between the elbow and the installation pipe and between the puncture head and the installation pipe is improved, and the nozzle in the fire-fighting lance is connected more stably.

The utility model relates to cleaning equipment. The cleaning equipment comprises a machine body, a floor brush assembly and a bent pipe connecting assembly. The machine body comprises a vacuum source; the floor brush assembly is provided with an air inlet pipe connected to a vacuum source. The bent pipe connecting assembly comprises a bent pipe connecting piece and a flexible hose. One end of the elbow connecting piece is rotationally connected with the machine body, and the other end of the elbow connecting piece is rotationally connected with the floor brush assembly; the flexible hose is rotationally connected with the air inlet pipe through the bent pipe connecting piece. When the cleaning equipment is used, due to the fact that the flexible hose can be driven by the bent pipe connecting piece to integrally rotate relative to the air inlet pipe of the floor brush assembly, the phenomenon that the flexible hose is twisted in the extending direction of the length of the flexible hose can be effectively reduced, the deformation direction of the flexible hose is effectively reduced, and the service life of the cleaning equipment is prolonged. The damage to the flexible hose is small, the service life of the flexible hose is prolonged, the resistance of a user in the using process is reduced, the using process is smoother, and then the user experience feeling is good.

The invention discloses a tunnel grout stop ring point-increasing grouting construction method. The method comprises the following steps that pipe pieces are installed; hydraulic filling of pea gravels; slurry enters a bent pipe joint through a grouting hole and enters a guide pipe in a grouting groove after being turned by the bent pipe joint, and grouting operation is conducted on the far end of the pipe piece through extension of the guide pipe; grouting is paused, wherein a bent pipe joint is damaged to achieve internal and external communication; near-end grouting is conducted, specifically, slurry enters a bent pipe joint through a grouting hole, and grouting operation is directly conducted on the near end of the pipe piece from inside to outside through the bent pipe joint; and repeating the steps. The method has the beneficial effects that supplementary grouting is conducted through the pre-buried grouting pipe, and the purpose of grouting range diffusion is achieved through a single grouting hole; the pre-buried guide pipe can directly convey the grout to an area where the grout is difficult to diffuse, the guarantee rate of forming a complete and continuous grout stop ring is greatly increased, and engineering risks and potential quality hazards caused by the incomplete grout stop ring are reduced.