Steel casing embedding auxiliary device and method thereof

Abstract

The invention relates to the technical field of pile foundation construction, and particularly discloses a steel casing embedding auxiliary device and a method thereof.The steel casing embedding auxiliary device comprises a cylinder and a casing, the cylinder is mounted on a pile driver, the pile driver drives the cylinder to move, a lifting ring is arranged on the inner side of the cylinder and can move up and down along the inner wall of the cylinder, and a containing groove is formed in the inner side of the lifting ring; the diameter of the containing groove is larger than the outer diameter of the pile casing connecting section, a plurality of sets of connecting assemblies are arranged on the periphery of the side wall of the cylinder, when the cylinder and the pile casing are connected, the limiting columns lock the cylinder and the pile casing in an inserted mode, the limiting plates are matched with the top plate, and the limiting columns are pulled out when the pile casing is buried; according to the auxiliary device and method for embedding the steel casing, slight deflection during butt joint of the casing can be adjusted, the lifting ring can move up and down along the inner wall of the casing to achieve the transition buffering effect, and butt joint is achieved through cooperation of the containing groove and the lifting ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile foundation construction, in particular to a steel casing embedding auxiliary device and a method thereof. BACKGROUND

[0002] In the pile foundation construction of bridges, buildings and other projects, the embedding of steel casings is a key link. Steel casings not only can accurately position the pile position and guide the drilling tool operation, but also can effectively prevent the collapse of the hole opening and hole wall, avoid slurry leakage, and isolate the water system pressure inside and outside the hole, which plays an important role in ensuring the quality and safety of pile foundation construction. The traditional steel casing embedding method lacks effective auxiliary positioning means during embedding, and often needs construction personnel to repeatedly measure and adjust with the help of a level and other tools, which not only consumes a lot of time and manpower, has extremely low work efficiency, and is greatly affected by human factors, making it difficult to ensure the accuracy and perpendicularity of the embedded position of the steel casing, and is prone to deviation, thereby affecting the quality of subsequent pile foundation construction. Some existing steel casing embedding auxiliary devices have small application scope.

[0003] The Chinese patent application file with publication number CN114753360A discloses a quick connection and separation device for a flower tube and a steel casing and a method thereof, which includes a tube body, a protective ring, a top plate, a U-shaped groove, a connecting square tube, and a pin rod through hole. A device for quick connection and separation of each pin rod at the lower end of the flower tube with each steel casing pin hole at the upper end of the steel casing is provided on the outer wall of the lower part of the tube body of the flower tube. The quick connection and separation device is composed of a switch rotating disc, an opening hole, a closing inclined plate, a spring chamber, a spring, a pin rod, a switch rod, and a pin rod through hole. The method is to complete the connection or separation of the flower tube and the steel casing through the quick connection and separation device. When the flower tube and the steel casing are butt jointed, the butt jointing or separation construction process of the two can be completed by manual operation on the ground, the process completion time is short, which is beneficial to speed up the construction progress on site, reduce the number of construction personnel, and save time and effort.

[0004] In the related prior art, when embedding the pile foundation casing, the casing needs to be installed at the lower end of the flower tube and connected with the flower tube by using the connecting assembly. The flower tube is installed at the lower end of the pile driver, and the casing needs to be vertical before the flower tube is butt jointed with the casing by moving the pile driver. Since the casing is generally lifted vertically, the verticality of the casing is poor, and the moving accuracy of the pile driver is poor during installation. Therefore, the butt jointing of the flower tube and the casing is prone to jamming, and the connecting assembly needs to be operated by workers on the ground. Since the length of each section of the casing is relatively long, the operation of the connecting assembly is relatively difficult. SUMMARY

[0005] The application provides a steel casing embedding auxiliary device and a method thereof, and aims to solve the problem that the verticality of the casing is poor in the prior art because the casing is generally hoisted when being vertically arranged, the casing needs to be vertically arranged, the casing is connected with the flower casing through the movement of the pile driver after the casing is vertically arranged, the connection between the casing and the flower casing is prone to being stuck due to poor movement accuracy of the pile driver during installation, and the connection assembly needs to be operated by workers on the ground, the single-section length of the casing is relatively long, and therefore the connection assembly is difficult to operate.

[0006] The steel casing embedding auxiliary device comprises a flower casing and a casing, the inner side of the flower casing is provided with a lifting ring, the lifting ring moves up and down along the inner wall of the flower casing, a containing groove is formed in the inner side of the lifting ring, the diameter of the containing groove is greater than the outer diameter of the casing, an elastic member one is arranged between the lifting ring and the flower casing, a plurality of groups of connection assemblies are arranged in a ring shape on the side wall of the flower casing, the connection assembly comprises a limiting column, a top plate and a limiting plate, the limiting column is perpendicular to the axis of the flower casing and approaches or moves away from the axis of the flower casing, an elastic member two is arranged between the limiting column and the flower casing, the limiting plate is vertically arranged and moves up and down along the flower casing, the top plate is horizontally arranged on the side wall of the flower casing, the top plate and the limiting plate are in an L shape, and the limiting plate can clamp the limiting column located at the outermost side when being located at the uppermost end. In the initial state, the elastic member one makes the lifting ring located at the lowermost end, and the elastic member two makes the limiting column closest to the axis of the flower casing, during connection, the casing abuts against the containing groove of the lifting ring, the lifting ring moves upwards along the flower casing to the uppermost end, the lifting ring extrudes the limiting column, the limiting column abuts against the outer side wall of the lifting ring, and the lifting ring moves to the uppermost end, and the limiting column is inserted into the casing.

[0007] The effect of the application lies in that the containing groove can adapt to the slight deflection of the casing during installation of the casing, the lifting ring is used for buffering and transition, the problem of jamming caused by deflection between the casing and the flower casing is reduced, the limiting column is automatically inserted into the casing through the arrangement of the limiting column and the elastic member two, the casing and the flower casing can be quickly fixed during connection, manual operation is reduced, the construction difficulty of the long casing is reduced, the safety risk of construction is reduced, a plurality of groups of connection assemblies are arranged, the plurality of sides of the casing can be quickly connected, the plurality of connection assemblies are synchronously adjusted during insertion of the casing, the connection of the casing is more stable, the installation process is simplified, manual leveling and manual operation steps are omitted, the embedding time of the single-section casing is shortened, and the construction efficiency is improved.

[0008] Preferably, the lifting ring is internally provided with lubricating cotton, and the annular lubricating cotton is arranged at the upper end of the containing groove, and the effect of the application lies in that the lubricating cotton is used for smearing lubricating medium, the friction between the casing and the flower casing during abutment and insertion of the multi-section casing is reduced, the lubricating medium forms a protective film, water vapor impurities are isolated, and the occurrence of rusting of the casing is reduced.

[0009] Preferably, the inner side of the flower cylinder is provided with a support ring, the support ring is arranged on the inner side of the flower cylinder, a plurality of elastic members one are arranged around the axis of the flower cylinder, one end of the elastic member one is arranged on the support ring, and the other end is arranged on the lifting ring, which has the effect that the support ring provides a stable installation reference, the plurality of elastic members one are uniformly distributed, the lifting ring is prevented from tilting, the movement of the lifting ring along the axis is constrained, and the stability of the lifting movement is improved.

[0010] Preferably, the elastic member one comprises a telescopic sleeve and a spring one, one end of the telescopic sleeve is arranged on the support ring, and the other end is arranged on the lifting ring, the telescopic sleeve limits the vertical up-down movement of the lifting ring, the telescopic sleeve is provided with the spring one, and the spring one is initially at the original length.

[0011] Preferably, a plurality of groups of balls are arranged on the outer side wall of the lifting ring, the plurality of groups of balls are arranged around the axis of the flower cylinder, and vertical grooves matched with the balls are formed in the inner wall of the flower cylinder, the plurality of groups of balls arranged around the circumference are matched with the vertical grooves, so that the lifting ring is kept coaxial with the flower cylinder during movement, which has the effect that the balls convert sliding friction into rolling friction, reduce resistance, and make the movement of the lifting ring more smooth, the cooperation of the balls and the vertical grooves keeps the lifting ring coaxial with the flower cylinder, reduces the wear of components, and prolongs the service life of the device.

[0012] Preferably, the outer side of the flower cylinder is provided with mounting holes, the mounting holes are arranged on the side wall of the flower cylinder in a direction perpendicular to the axis of the flower cylinder, the mounting holes are arranged in one-to-one correspondence with the limiting columns, one end of the telescopic member two is arranged on the limiting column, and the other end is arranged in the mounting hole.

[0013] Preferably, the upper side of the mounting hole is provided with an L-shaped sliding groove, the top plate and the limiting plate are vertically slidably arranged in the sliding groove, the top plate extends into the flower cylinder, the lifting ring pushes the top plate upward when moving upward, and the limiting plate moves upward, and a spring sheet is arranged between the upper side of the top plate and the sliding groove, which has the effect that the spring sheet drives the top plate and the limiting plate to automatically ascend and descend, cooperates with the L-shaped groove to limit the movement track, and ensures the stable action of the limiting plate.

[0014] Preferably, the limiting plate is in the shape of an inverted U, the limiting plate is provided with telescopic blocks on both sides of the lower end, the outer end of the limiting column is provided with a limiting ring, the outer side of the limiting ring is arc-shaped, the limiting column is provided with a pull ring, and when the limiting column is displaced to the outermost side, the limiting ring passes over the telescopic blocks of the limiting plate.

[0015] Preferably, the outer periphery of the lifting ring is provided with an inclined table, and when the lifting ring moves upward, the inclined table causes the limiting column to move outward and abut against the outer side wall of the lifting ring.

[0016] A steel casing burying method, according to any one of the above-mentioned steel casing burying auxiliary devices, comprising the following steps: S1, initial state, the elastic member one makes the lifting ring located at the lowermost end of the inner side of the flower cylinder, and the elastic member two makes the limiting column closest to the axis of the flower cylinder; S2, the sleeve is aligned with the receiving groove of the lifting ring, the sleeve is against the receiving groove, the lifting ring moves upward along the inner wall of the flower tube, and the inclined table on the outer periphery of the lifting ring moves the limiting column outward and abuts against the side wall of the lifting ring; S3, when the lifting ring moves upward to the uppermost end, the lifting ring pushes the top plate, the limiting plate moves upward, the limiting column moves inward and is inserted into the sleeve, and the connection and fixation of the sleeve are completed; S4, after the burying is completed, the limiting column is moved outward by pulling the pull ring on the limiting column, the limiting ring is limited by the limiting plate, the flower tube is removed, and the burying of one section of the sleeve is completed.

[0017] The effect is that: by using the above operation method, the receiving groove can adapt to the slight deviation of the sleeve during installation, the lifting ring is buffered, the jamming problem caused by the inclination between the sleeve and the flower tube is reduced, the limiting column is automatically inserted into the sleeve by setting the limiting column and the elastic element two, the sleeve and the flower tube can be quickly fixed during connection, manual operation is reduced, the construction difficulty of long sleeve is reduced, the safety risk of construction is reduced, the lubricating cotton is set to smear the lubricating medium, the friction of the sleeve butt joint is reduced, the lubricating medium forms a protective film, the occurrence of sleeve rust is reduced, the sliding friction is converted to rolling friction by the ball, the resistance is reduced, the lifting ring moves more smoothly, the lifting ring and the flower tube are coaxial by the cooperation of the ball and the vertical groove, the part wear is reduced, and the service life of the device is prolonged.

[0018] By using the above technical scheme, the application has the following beneficial effects: By setting the lifting ring which can move up and down along the inner wall on the inner side of the flower tube, and the receiving groove with a diameter larger than the outer diameter of the sleeve is opened in the inner side of the lifting ring, the slight deviation of the sleeve during installation is adapted, the butt jamming is reduced, a plurality of connection assemblies are set, each connection assembly contains a limiting column, a top plate and a limiting plate, the limiting column can move perpendicular to the axis of the flower tube, the elastic element two is arranged between the limiting column and the flower tube, and the limiting column is inserted by using the connection assembly when the sleeve and the flower tube are aligned, so that the inclination problem during assembly and the difficult butt joint and non-operation condition can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the burying device of the application.

[0020] Figure 2 It is a structure schematic view of the sleeve of the application.

[0021] Figure 3 It is a structure schematic view of the flower tube of the application.

[0022] Figure 4 It is a structure schematic view of the lifting ring of the application.

[0023] Figure 5 It is a structure schematic view of the connection assembly of the application.

[0024] Figure 6 Structure diagram of telescopic block of the application.

[0025] Figure 7 Structure diagram of inclined table of the application.

[0026] Figure 8 Structure diagram of lubricating cotton of the application.

[0027] Figure 9 Structure diagram of sliding groove section of the application.

[0028] Figure 10 Structure diagram of installation position of limiting column of the application.

[0029] Figure 11 Structure diagram of Figure 10 Enlarged diagram of part A.

[0030] Reference signs: 1, flower barrel; 11, lifting ring; 111, lubricating cotton; 112, ball; 114, inclined table; 12, containing groove; 13, elastic piece one; 131, telescopic sleeve; 132, spring one; 14, supporting ring; 15, mounting hole; 16, sliding groove; 161, elastic piece; 2, protective barrel; 3, connecting assembly; 31, limiting column; 312, pull ring; 32, top plate; 33, limiting plate; 331, telescopic block. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] The protective barrel 2 is a key link in pile foundation construction, which can fix pile position, protect hole opening, prevent hole opening collapse, and isolate surface water. In related art, when the protective barrel 2 is buried, the flower barrel 1 is installed on the pile driver, the protective barrel 2 to be buried is installed at the lower end of the flower barrel 1, and then the pile driver is used to bury the protective barrel 2 to the predetermined position, thereby completing the installation of one section of the protective barrel 2. When the protective barrel 2 is connected at the lower end of the flower barrel 1, the coaxiality between the protective barrel 2 and the flower barrel 1 cannot be limited, which easily causes the protective barrel 2 to be inserted into the flower barrel 1 to be stuck with the flower barrel 1.

[0033] As Figures 1 to 11As shown, an auxiliary device for embedding steel casing includes a tube 1 and a casing 2. The tube 1 is installed on a pile driver and is driven to move by the pile driver. A lifting ring 11 is provided on the inner side of the tube 1. The lifting ring 11 can move up and down along the inner wall of the tube 1. A receiving groove 12 is opened on the inner side of the lifting ring 11. The diameter of the receiving groove 12 is larger than the outer diameter of the connecting section of the casing 2. Multiple sets of connecting components 3 are arranged around the side wall of the tube 1. The connecting components 3 include: a limiting post 31, a top plate 32, and a limiting plate 33. The limiting post 31 is set on the side wall of the tube 1. When the tube 1 is connected to the casing 2, the limiting post 31 inserts and locks the tube 1 and the casing 2. The limiting plate 33 and the top plate 32 cooperate. When the casing 2 is embedded, the limiting post 31 is pulled out, and the limiting plate 33 locks the limiting post 31, so that the tube 1 is separated from the embedded casing 2, thus completing the embedding of one section of the casing 2.

[0034] A lifting ring 11 is installed inside the flower tube 1 to prevent direct contact between the flower tube 1 and the protective tube 2 when they are connected. This reduces the chance of jamming caused by the end of the protective tube 2 directly abutting against the flower tube 1. The lifting ring 11 allows for quick insertion of the protective tube 2 and the flower tube 1 regardless of the angle of deviation of their axes. Multiple sets of connecting components 3 are installed around the side wall of the flower tube 1. When the protective tube 2 is connected to the flower tube 1, the limiting post 31 quickly fixes the protective tube 2 and the flower tube 1 together, solving the problem of the long protective tube 2 being high above the ground when it is connected, which makes manual operation inconvenient.

[0035] The upper end of the flower cylinder 1 is connected to the pile driver. The flower cylinder 1 and the pile driver are connected by a pin. By setting matching shaft holes at the connection between the flower cylinder 1 and the pile driver, a hinge is achieved by inserting a high-strength pin. This ensures power transmission and allows for a certain angle of swing, making it convenient for use in complex terrain or when the working angle needs to be adjusted.

[0036] like Figures 3 to 9 As shown, a lifting ring 11 is slidably installed inside the flower tube 1, and a support ring 14 is installed inside the flower tube 1. The support ring 14 is fixedly installed on the inner wall of the flower tube 1. The support ring 14 is preferably made of metal material and is fixed to the inner wall of the flower tube 1 by bolts or welding.

[0037] Multiple elastic elements 13 are arranged on the support ring 14 around the axis of the flower tube 1. The upper end of the elastic element 13 is fixedly arranged on the support ring 14, and the lower end of the elastic element 13 is arranged on the upper end of the lifting ring 11. The fixed arrangement of the support ring 14 provides stable support for the up and down movement of the lifting ring 11. The elastic element 13 makes the lifting ring 11 initially located at the lowest end. In the initial state, the lower end face of the lifting ring 11 is on the same plane as the lower end face of the flower tube 1. The support ring 14 restricts the lifting ring 11 to move up and down only within the flower tube 1 below the support ring 14 when it moves up and down.

[0038] likeFigures 3 to 7 As shown, the elastic member 13 includes a telescopic sleeve 131 and a spring 132, the telescopic sleeve 131 is composed of two sections of metal tubes that can be telescoped with each other, the upper section of the telescopic sleeve 131 is arranged on the support ring 14, and the lower section of the telescopic sleeve 131 is arranged on the lifting ring 11, when the lifting ring 11 moves up and down, the telescopic sleeve 131 limits the lifting ring 11 to move up and down along the path of the telescopic sleeve 131, the spring 132 is arranged in the telescopic sleeve 131, and the spring 132 is in a natural state without force in the initial state, when the spring 132 is in the natural state, the lower end surface of the lifting ring 11 is located in the same plane as the lower end surface of the flower tube 1, when the lifting ring 11 moves upward under the force, the telescopic sleeve 131 shortens and the spring 132 contracts, the elastic potential energy of the spring 132 increases, when the external force acting on the lifting ring 11 disappears, the spring 132 releases the elastic potential energy to drive the telescopic sleeve 131 to restore the original length, and the lifting ring 11 returns to the state that the lower end surface is located in the same plane as the lower end surface of the flower tube 1.

[0039] The arrangement of the telescopic sleeve 131 and the spring 132 can limit the movement path of the lifting ring 11, the spring 132 keeps the lifting ring 11 in the initial state, the telescopic sleeve 131 guides the lifting ring 11 when the lifting ring 11 moves under the force, and the spring 132 quickly resets the lifting ring 11 after the external force acting on the lifting ring 11 disappears.

[0040] As shown, Figures 4 to 8 The outer side wall of the lifting ring 11 is provided with a plurality of groups of balls 112, the plurality of groups of balls 112 are arranged around the axis of the flower tube 1, each group of balls 112 is provided with a plurality of balls 112, and the plurality of balls 112 are vertically arranged on the outer side wall of the lifting ring 11. The balls 112 are embedded on the side wall of the lifting ring 11 by embedding, a mounting groove is formed on the side wall of the lifting ring 11, the groove depth of the mounting groove is smaller than the diameter of the ball 112, usually 2 / 3 of the diameter, the ball 112 is embedded in the mounting groove, a cover plate is arranged at the opening of the mounting groove to limit the ball 112 from falling off, only part of the spherical surface is exposed to contact with the matching part, the material of the ball 112 is usually high-strength bearing steel, which is quenched to improve hardness and wear resistance, and stainless steel material can be selected for scenes with rust prevention requirements.

[0041] The inner side wall of the flower tube 1 is provided with a vertical groove, the vertical groove is formed in the inner side wall of the flower tube 1 in the vertical direction, a plurality of vertical grooves are arranged around the inner side wall of the flower tube 1, the number of vertical grooves is the same as the number of groups of balls 112, each group of vertically arranged balls 112 is mounted in the vertical groove, and the balls 112 roll up and down in the vertical groove when the lifting ring 11 moves up and down, thereby reducing the friction between the lifting ring 11 and the side wall of the flower tube 1, making the movement of the lifting ring 11 more smooth, and increasing the service life of the equipment.

[0042] As shown, Figures 1 to 11As shown, the inner side of the lifting ring 11 is provided with a receiving groove 12, the annular receiving groove 12 is provided at the lower end face of the inner side of the lifting ring 11, the diameter of the receiving groove 12 is larger than the diameter of the connecting section of the bushing 2, the receiving groove 12 can be machined by turning on the lifting ring 11, or an annular ring is arranged at the lower end face of the lifting ring 11, the outer diameter of the annular ring is the same as the diameter of the lifting ring 11, and the inner diameter of the annular ring is larger than the diameter of the connecting section of the bushing 2.

[0043] When connected, the connecting section of the bushing 2 abuts in the receiving groove 12, when the connecting section of the bushing 2 enters the bush 1, the bushing 2 pushes the abutting receiving groove 12 to move the lifting ring 11 upward along the bush 1, and the multiple groups of rolling balls 112 arranged at the same time reduce the frictional force when the lifting ring 11 moves upward.

[0044] The multiple groups of rolling balls 112 reduce the stress deviation of the lifting ring 11, replace sliding friction with rolling friction, and by arranging rolling balls 112 on each side of the lifting ring 11, the rolling balls 112 limit the lifting ring 11 to always maintain coaxial with the bush 1 when the lifting ring 11 is subjected to the extrusion force of the bushing 2, solving the movement deviation caused by uneven friction, surface deformation or stress concentration in sliding contact, thereby improving stability and service life.

[0045] As shown, Figures 5 to 10 The annular lubricating cotton 111 is arranged in the receiving groove 12, the receiving groove 12 is provided with a groove for accommodating the lubricating cotton 111, the lubricating cotton 111 is arranged in the groove, the lubricating cotton 111 is soaked with lubricating medium, which can reduce the friction and wear between the receiving groove 12 and the matching surface of the bushing 2, and reduce the running noise; it can also prevent rust and improve the stability of the equipment operation; the annular lubricating cotton 111 is preferably made of sponge, which can accommodate more lubricating medium through the voids of the sponge, and when the lubricating cotton 111 is extruded between the lubricating cotton 111 and the bushing 2, the lubricating cotton 111 deforms to form a locally concave state, so that the upper end of the bushing 2 can be fully soaked.

[0046] An oil inlet is arranged on the side of the lifting ring 11, new lubricating medium is injected into the lubricating cotton 111 through the oil inlet arranged on the side of the lifting ring 11 after a period of work, so that the lubricating cotton 111 always maintains a wet state.

[0047] The lubricating cotton 111 can be used to lubricate the upper end of the casing 2 when the casing 2 is installed, and when the two casings 2 are connected, the lower casing 2 is inserted into the upper casing 2. Due to the misalignment or poor coaxiality, the connection position of the two casings 2 is prone to jamming when being inserted, which causes the two casings 2 to be unable to be quickly inserted, and manual assistance is required to adjust the position to complete the insertion action. Since the casing 2 insertion construction environment is dangerous, workers are prone to injury when assisting in installation. After the lubricating cotton 111 is applied, the upper end of the casing 2 is in a good lubricated state, which reduces the jamming between the casings 2 during the insertion of the two casings 2, and the lubricating medium is applied every time, which effectively reduces the rust and jamming of the connection part of the casing 2.

[0048] As shown in Figures 1 to 8 The outer side of the flower barrel 1 is provided with a mounting hole 15, and the mounting hole 15 is provided along the direction perpendicular to the axis of the flower barrel 1. A limiting column 31 is slidingly arranged in the mounting hole 15, and the limiting column 31 slides along the mounting hole 15 to approach or move away from the axis of the flower barrel 1. An installation block is arranged on the outer side of the flower barrel 1, and a horizontal through hole is formed in the installation block. The diameter of the horizontal through hole is larger than the diameter of the mounting hole 15, and the horizontal through hole on the installation block is coaxially arranged with the mounting hole 15.

[0049] A limiting ring is arranged on the limiting column 31, and the position of the limiting ring is arranged at the end of the limiting column 31 away from the axis of the flower barrel 1. The diameter of the limiting ring is larger than that of the limiting column 31, and the diameter of the limiting ring is the same as that of the through hole of the installation block. When the limiting column 31 moves towards the axis of the flower barrel 1, the limiting ring abuts against the side wall of the flower barrel 1, and the limiting column 31 cannot continue to move inward.

[0050] An L-shaped sliding groove 16 is arranged in the installation block. The upper segment of the sliding groove 16 is horizontally arranged, and the lower segment of the sliding groove 16 is vertically arranged. The vertically arranged sliding groove 16 intersects with the horizontal through hole in the mounting hole 15. A limiting plate 33 is vertically arranged and slides up and down along the flower barrel 1. A top plate 32 is horizontally arranged and is arranged up and down along the flower barrel 1. A slot is formed in the flower barrel 1 for the top plate 32 to pass through. The horizontal segment of the sliding groove 16 is opposite to the slot on the flower barrel 1. The end of the top plate 32 close to the axis of the flower barrel 1 extends into the flower barrel 1. When the lifting ring 11 moves upward, the lifting ring 11 moves the top plate 32 upward. The top plate 32 and the limiting plate 33 are connected by insertion. An insertion hole is formed in the top plate 32, and an insertion rod is arranged at the upper end of the limiting plate 33. The insertion rod of the limiting plate 33 cooperates with the insertion hole on the top plate 32 to make the limiting plate 33 and the top plate 32 be inserted. The limiting plate 33 and the top plate 32 form an L shape. When the top plate 32 is pushed up and down by the lifting ring 11, the limiting plate 33 moves up and down in the L-shaped sliding groove 16 along with the top plate 32.

[0051] AsFigures 2 to 6 As shown, the limiting plate 33 is arranged in an inverted U shape, the insertion rod on the limiting plate 33 is arranged at the upper end of the limiting plate 33, and the limiting plate 33 is located on both sides of the limiting column 31 when sliding up and down. The spring 161 is arranged between the top plate 32 and the sliding groove 16, and the spring 161 is arranged on the upper side of the top plate 32. The spring 161 makes the limiting plate 33 located at the lowermost end of the L-shaped sliding groove 16. When the top plate 32 moves upward, the spring 161 is compressed under force, and the elastic potential energy of the spring 161 increases. When the external force acting on the top plate 32 disappears, the spring 161 makes the top plate 32 located at the initial position.

[0052] The lower section of the limiting plate 33 is provided with two telescopic blocks 331 close to both sides of the limiting column 31, and the minimum distance between the two telescopic blocks 331 is smaller than the diameter of the limiting ring arranged on the limiting column 31. The side of the telescopic block 331 close to the axis of the cylinder 1 is arranged as an inclined surface. When the limiting column 31 moves outward, the limiting ring arranged on the limiting column 31 pushes the telescopic block 331, so that the telescopic blocks 331 on both sides retract. After the limiting ring passes the telescopic block 331, the telescopic block 331 clamps the limiting ring, so that the limiting column 31 is pulled out of the connecting hole arranged on the protective cylinder 2. When the limiting ring moves outward, the surface in contact with the telescopic block 331 is a curved surface. By arranging the contact surface as a curved surface, the stress between the limiting ring and the telescopic block 331 is smaller when they are in contact, and the limiting ring can quickly pass the telescopic block 331.

[0053] As shown, Figures 5 to 7 The outer side surface of the limiting column 31 is provided with a pull ring 312. The pull ring 312 of the limiting column 31 is fixed on the side surface of the limiting column 31 by means of bolts or the like. When the protective cylinder 2 needs to be removed, the limiting column 31 moves outward from the position close to the axis of the cylinder 1, and the limiting column 31 is pulled to move by the pull ring 312, so that the telescopic member two between the limiting column 31 and the cylinder 1 is elongated, and the elastic potential energy of the telescopic member two is increased. When the limiting column 31 moves outward, the limiting ring arranged on the limiting column 31 abuts against the telescopic block 331, so that the telescopic block 331 retracts inward. After the limiting ring passes the telescopic block 331, the telescopic block 331 clamps the limiting ring, so that the limiting column 31 cannot be directly reset.

[0054] When the protective cylinder 2 needs to be removed, the worker can quickly insert a crowbar or other tool into the pull ring 312 of the limiting column 31 to pull out the limiting column 31 from the connecting part of the protective cylinder 2. The outer periphery of the upper side of the lifting ring 11 is provided with an inclined table 114. When the lifting ring 11 moves upward, the inclined table 114 of the lifting ring 11 moves the limiting column 31 outward. After the limiting column 31 moves outward, the limiting column 31 abuts against the outer side wall of the lifting ring 11. When the protective cylinder 2 moves to the designated position, the limiting column 31 is inserted into the connecting hole of the protective cylinder 2 under the action of the telescopic member two, and the connection of the protective cylinder 2 is completed.

[0055] The working principle of the steel casing embedding auxiliary device is as follows: in the initial state, the elastic element one 13 on the supporting ring 14 inside the flower cylinder 1 is in the original length, the lifting ring 11 is pushed to the lowermost end of the flower cylinder 1, the lower end surface of the lifting ring 11 is flush with the lower end surface of the flower cylinder 1, the elastic element two in the hole 15 of the side wall of the flower cylinder 1 is in the original length state, the limiting column 31 closest to the axis of the flower cylinder 1 is pulled, and the elastic sheet 161 in the L-shaped sliding groove 16 makes the top plate 32 and the inverted U-shaped limiting plate 33 located at the lowermost end. At this time, the height of the limiting column 31 and the telescopic block 331 on the limiting plate 33 does not correspond, and the telescopic block 331 on both sides of the limiting plate 33 is in the extended state.

[0056] In the docking stage, the casing 2 is aligned with the containing groove 12 inside the lifting ring 11, the containing groove 12 is larger in diameter than the outer diameter of the casing 2, the casing 2 is slightly deviated, the connecting section of the casing 2 is resisted by the bottom of the containing groove 12, the lifting ring 11 is pushed to move upward along the inner wall of the flower cylinder 1, the lubricating cotton 111 in the lifting ring 11 can apply lubricating medium to the upper end of the casing 2 during docking, so as to reduce the jamming of the casing 2 during insertion and improve the smoothness of docking. During the process, the ball 112 outside the lifting ring 11 rolls along the vertical groove in the flower cylinder 1, so as to ensure that the lifting ring 11 is coaxial with the flower cylinder 1; the inclined table 114 on the outer periphery of the lifting ring 11 gradually extrudes the limiting column 31, overcomes the elastic force of the elastic element two, and moves the limiting column 31 outward until the limiting column 31 abuts against the outer wall of the lifting ring 11. At the same time, the lifting ring 11 pushes the top plate 32 at the upper end, compresses the elastic sheet 161, and moves the limiting plate 33 along the sliding groove 16. The telescopic block 331 of the limiting plate 33 moves upward to align the telescopic block 331 with the limiting ring.

[0057] In the locking stage, when the lifting ring 11 moves upward to the uppermost end, the telescopic sleeve 131 is retracted to the limit position, the lifting ring 11 no longer extrudes the limiting column 31, the elastic element two releases the elastic force, the limiting column 31 is quickly moved inward, and the limiting column 31 is inserted into the connecting hole provided on the casing 2, so as to complete the fixed connection of the casing 2 and the flower cylinder 1. Then, the flower cylinder 1 can be driven by a pile driver to press the casing 2 into the specified embedding position.

[0058] In the separation stage, after the casing 2 is embedded, the outer end pull ring 312 of the limiting column 31 is pulled to move the limiting column 31 outward out of the connecting hole of the casing 2 against the elastic force of the elastic element two. When the limiting column 31 moves outward, the limiting ring outside the limiting column 31 extrudes the telescopic block 331 of the limiting plate 33 to make the telescopic block 331 retract. After the limiting ring passes the telescopic block 331, the telescopic block 331 is reset to block the limiting ring to limit the resetting of the limiting column 31. At this time, the flower cylinder 1 can be lifted upward to separate the flower cylinder 1 from the embedded casing 2, and the embedding of a single casing 2 is completed.

[0059] In addition, a steel casing embedding method is provided, which comprises the following steps: S1, initial state: the elastic member 13 is in its original length, the lifting ring 11 is pushed to the lowermost end of the inner side of the cylinder 1, the lower end surface of the lifting ring 11 is flush with the lower end surface of the cylinder 1; the elastic member 2 makes the limiting column 31 closest to the axis of the cylinder 1, and the limiting plate 33 and the top plate 32 are at the lowermost end under the action of the elastic sheet 161; S2, cylinder 2 butt joint: the upper end of the cylinder 2 abuts against the accommodating groove 12, the cylinder 1 moves downward, and the cylinder 2 pushes the lifting ring 11 to move upward. The ball 112 of the lifting ring 11 rolls along the vertical groove to keep coaxial, and the inclined table 114 of the outer periphery of the lifting ring 11 extrudes the limiting column 31 to overcome the elastic force of the elastic member 2 and moves outward until it abuts against the outer wall of the lifting ring 11; the upper end of the lifting ring 11 pushes the top plate 32, and the elastic sheet 161 is compressed to make the top plate 32 move upward with the limiting plate 33.

[0060] S3, locking and fixing: the lifting ring 11 moves upward to the uppermost end and no longer extrudes the limiting column 31, the elastic member 2 pulls the limiting column 31 to move inward and insert into the connecting hole of the cylinder 2, and the fixing is completed. Slightly shake the cylinder 1 to confirm that there is no displacement, and the locking is firm.

[0061] S4, burying and separating: the pile driver drives the cylinder 1 to make the cylinder 2 press into the predetermined position. After burying is completed, the limiting column 31 pulls the ring 312 to make it move outward and separate from the cylinder 2, the limiting ring passes through the expansion block 331, and the expansion block 331 clamps the limiting ring. Lift the cylinder 1 to complete the separation, check the device components, and prepare for the burying of the next section of the cylinder 2.

[0062] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An auxiliary device for burying steel casings, comprising: Flower tube (1) and protective tube (2); characterized in that a lifting ring (11) is provided on the inner side of the flower tube (1), the lifting ring (11) moves up and down along the inner wall of the flower tube (1), a receiving groove (12) is provided on the inner side of the lifting ring (11), the diameter of the receiving groove (12) is larger than the outer diameter of the protective tube (2), an elastic element (13) is provided between the lifting ring (11) and the flower tube (1), and multiple sets of connecting components (3) are provided around the side wall of the flower tube (1), the connecting components (3) include: a limiting post (31) ), top plate (32) and limiting plate (33); the limiting post (31) is perpendicular to the axis of the flower tube (1) and close to or far from the axis of the flower tube (1). An elastic element is provided between the limiting post (31) and the flower tube (1). The limiting plate (33) is vertically set and moves up and down along the flower tube (1). The top plate (32) is horizontally set on the side wall of the flower tube (1). The top plate (32) and the limiting plate (33) are L-shaped. When the limiting plate (33) is at the uppermost end, it can lock the limiting post (31) located on the outermost side. In the initial state, the first elastic element (13) makes the lifting ring (11) located at the lowest end, and the second elastic element makes the limiting post (31) closest to the axis of the flower tube (1). When connected, the protective tube (2) abuts against the receiving groove (12) of the lifting ring (11), and the lifting ring (11) moves upward along the flower tube (1) to the highest end. The lifting ring (11) squeezes the limiting post (31) so that it abuts against the outer wall of the lifting ring (11). The lifting ring (11) moves to the highest end, and the limiting post (31) inserts into the protective tube (2).

2. The auxiliary device for burying steel casing according to claim 1, characterized in that, The lifting ring (11) is provided with lubricating cotton (111), and the annular lubricating cotton (111) is located at the upper end of the receiving groove (12).

3. The auxiliary device for burying steel casing according to claim 1, characterized in that, The flower tube (1) is provided with a support ring (14) inside. The support ring (14) is provided inside the flower tube (1). Multiple elastic elements (13) are provided around the axis of the flower tube (1). One end of the elastic element (13) is provided on the support ring (14), and the other end is provided on the lifting ring (11).

4. The auxiliary device for burying steel casing according to claim 3, characterized in that, The elastic element (13) includes a telescopic sleeve (131) and a spring (132). One end of the telescopic sleeve (131) is set on the support ring (14), and the other end is set on the lifting ring (11). The telescopic sleeve (131) restricts the vertical up and down movement of the lifting ring (11). The spring (132) is set inside the telescopic sleeve (131), and the spring (132) is initially at its original length.

5. The auxiliary device for burying steel casing according to claim 4, characterized in that, Multiple sets of balls (112) are provided on the outer wall of the lifting ring (11). The multiple sets of balls (112) are arranged around the axis of the flower cylinder (1). The inner wall of the flower cylinder (1) is provided with a vertical groove that cooperates with the balls (112). The multiple sets of balls (112) arranged around the circumference cooperate with the vertical groove so that the lifting ring (11) remains coaxial with the flower cylinder (1) when it moves.

6. The auxiliary device for burying steel casing according to claim 1, characterized in that, The flower tube (1) has an installation hole (15) on its outer side. The installation hole (15) is opened on the side wall of the flower tube (1) in a direction perpendicular to the axis of the flower tube (1). The installation hole (15) is set in correspondence with the limiting post (31). One end of the telescopic component is set on the limiting post (31) and the other end is set in the installation hole (15).

7. The auxiliary device for burying steel casing according to claim 6, characterized in that, An L-shaped sliding groove (16) is provided on the upper side of the mounting hole (15). The top plate (32) and the limiting plate (33) are vertically slidably disposed in the sliding groove (16). The top plate (32) extends into the flower tube (1). When the lifting ring (11) moves upward, it pushes the top plate (32) to make the limiting plate (33) move upward. A spring piece (161) is provided between the upper side of the top plate (32) and the sliding groove (16).

8. The auxiliary device for burying steel casing according to claim 7, characterized in that, The limiting plate (33) is inverted U-shaped. Both sides of the lower end of the limiting plate (33) are provided with telescopic blocks (331). The outer end of the limiting post (31) is provided with a limiting ring. The outer side of the limiting ring is arc-shaped. The limiting post (31) is provided with a pull ring (312). When the limiting post (31) is moved to the outermost position, the limiting ring passes over the telescopic block (331) of the limiting plate (33).

9. The auxiliary device for burying steel casing according to claim 7, characterized in that, An inclined platform (114) is provided on the outer periphery of the lifting ring (11). When the lifting ring (11) moves upward, the inclined platform (114) causes the limiting post (31) to move outward and abut against the outer wall of the lifting ring (11).

10. A method for burying steel casings, comprising an auxiliary device for burying steel casings according to any one of claims 1-9, characterized in that, Includes the following steps: S1, Initial state, the first elastic element (13) makes the lifting ring (11) located at the lowest end of the inner side of the flower tube (1), and the second elastic element makes the limiting post (31) closest to the axis of the flower tube (1); S2. Align the protective sleeve (2) with the receiving groove (12) of the lifting ring (11) so that the protective sleeve (2) abuts against the receiving groove (12). The lifting ring (11) moves upward along the inner wall of the flower tube (1). During the process, the inclined platform (114) on the outer periphery of the lifting ring (11) causes the limiting post (31) to move outward and abut against the side wall of the lifting ring (11). S3. When the lifting ring (11) moves upward to the uppermost position, the lifting ring (11) pushes the top plate (32), causing the limiting plate (33) to move upward, and the limiting column (31) moves inward and inserts into the protective tube (2), thus completing the connection and fixation of the protective tube (2). S4. After the installation is completed, pull the pull ring (312) on the limiting post (31) to move the limiting post (31) outward. The limiting ring and the limiting plate (33) work together to restrict the limiting post (31). Remove the flower tube (1) to complete the installation of one section of the protective tube (2).

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