Precise alignment and segmented lowering device for large-diameter and ultra-long steel cage and use method thereof

Abstract

The present invention belongs to the field of building construction technology, especially a device and method for accurately aligning and lowering a large-diameter super-long steel cage in sections. The following scheme is proposed, including a bottom support mechanism arranged in a square shape, the top of the bottom support mechanism is slidably connected to a moving mechanism of a square structure, and the four sides of the moving mechanism are slidably sleeved with an alignment mechanism; the alignment mechanism includes a rectangular structure frame slidably sleeved with the moving mechanism, the frame is movably sleeved with a rotating rod arranged along its length direction, and the rotating rod extends into the top of the inner circle of the frame and is installed with a long strip structure card arranged along the length direction of the frame. The combined design of the present invention is convenient and quick to install, and is easy to transport and carry. At the same time, it can be suitable for the alignment and docking operation of the bottom of the steel cage inside the hole pile hole of different diameters, so that the steel cage is coaxial with the hole pile hole, ensuring that the steel cage is kept in a vertical state when it is below, and the operation is convenient to reduce the labor intensity of the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a precise alignment and segmented lowering device for a large-diameter and ultra-long steel cage and a use method thereof. Background Art

[0002] A bored pile is a pile made by drilling a hole in place and pouring concrete or reinforced concrete. Commonly used ones are: (1) bored pile: a pile is made by drilling a hole in place and pouring concrete using a spiral drill, a submersible drill, etc. There is no vibration and no soil squeezing during construction, but the settlement of the pile is slightly larger. Spiral drills are suitable for clay, sand and artificial fill above the groundwater level. The drilled soil blocks rise along the spiral blades on the drill rod and are discharged out of the hole. The hole diameter is about 300mm and the drilling depth is 8 to 12m. The drill rod is selected according to the soil quality and water content. Submersible drills are suitable for clay, sand, silt and silty soil, etc., especially for drilling holes in soil layers with high groundwater levels. When drilling, mud is used to protect the wall to prevent collapse. Use clean water to drill in clay and make your own mud to protect the wall; inject prepared mud into sand for drilling. Use mud circulation to remove soil debris from drilling. After drilling to the required depth, clean the hole to remove soil debris at the bottom of the hole and reduce the settlement of the pile. Currently, large-diameter bored piles that are widely used in large projects such as high-rise buildings and bridges are mostly constructed using this method. The pile diameter is mostly above 1m, and the bottom of the pile can be expanded. The bearing capacity of a single pile can reach thousands of tons. (2) Pipe sinking piles: Use hammering or vibration to sink a steel pipe with a reinforced concrete pile shoe (pile tip) or a flap-type pile shoe into the soil, and then pour concrete and pull the pipe to form a pile. Pipe sinking and pipe pulling with a hammer is called hammered cast-in-place piles; pipe sinking and pipe pulling with a vibrator is called vibration cast-in-place piles. This method of pile construction is prone to problems such as broken piles, neck shrinkage, hanging piles, water and mud ingress into the pile shoe, etc. Pay attention to inspection and timely treatment during construction. In addition, there are explosive expansion cast-in-place piles that use explosives to form an enlarged head at the bottom of the pile hole to increase the bearing capacity;

[0003] During pile foundation construction, due to the deep depth of the pile hole, it is difficult to hoist and lower the extra-long steel cage with existing technology, and the crane arm length is difficult to meet the requirements. It is necessary to adopt a segmented lowering method according to the steel cage. The segmented lowering and assembly of the steel cage requires solving the problem of precise alignment between the segments. The current technology mainly relies on manual observation for alignment. It is difficult to perform alignment operations in a small space such as a pile hole. For this reason, a precise alignment and segmented lowering device for large-diameter extra-long steel cages is required. Summary of the invention

[0004] The invention provides a precise alignment and segmented lowering device for a large-diameter and ultra-long steel cage, which solves the problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The precise alignment and segmented lowering device for large-diameter and extra-long steel cages comprises a bottom support mechanism arranged in a square shape, the top of the bottom support mechanism is slidably connected to a moving mechanism with a square structure, the four sides of the moving mechanism are all slidably sleeved with alignment mechanisms, and the alignment mechanism is detachably connected to a docking mechanism at a position where it extends into the inner circle of the moving mechanism;

[0007] The cam is provided with a plurality of movable members which are respectively arranged on the frame and the movable member, and the movable member is connected with the movable member by the movable member, and the movable member is connected with the movable member by the movable member, and the movable member is connected with the movable member by the movable member, and the movable member is connected with the movable member by the movable member, and the movable member is connected with the movable member by the movable member, and the movable member is connected with the movable member by the movable member,

[0008] Preferably, the bottom supporting mechanism comprises two groups of U-shaped brackets arranged opposite to each other, the brackets comprising a horizontal plate, both ends of the horizontal plate are fixedly connected to vertical plates, the top of the vertical plate is provided with a first slide arranged along the length direction thereof, the top of the horizontal plate is provided with a second slide arranged along the length direction thereof, and both sides of the end of the vertical plate of one of the brackets away from the horizontal plate connected thereto are fixed with reinforcing plates, and the interiors of the first slide and the second slide are slidably sleeved with sliders fixed to the bottom of the moving mechanism directly above them.

[0009] Preferably, the moving mechanism includes a front end bracket and a rear end bracket of a U-shaped structure arranged opposite to each other, and extension plates are fixedly connected to both sides of one end of the rear end bracket close to the front end bracket, and the extension plate penetrates a first docking hole, and second docking holes connected to the first docking hole are penetrated at both ends of the side of the front end bracket close to the rear end bracket, and third docking holes are penetrated in the middle position of the side where the front end bracket and the rear end bracket are away from each other, and the first docking hole, the second docking hole and the third docking hole are slidably connected with adjacent alignment mechanisms.

[0010] Preferably, the tensioning mechanism comprises a sleeve fixedly connected to the top of the adjusting plate, the top of the sleeve is movably sleeved with a push rod fixedly connected to the bottom of the clamping plate, and one end of the push rod extending into the sleeve is fixedly connected to a first spring.

[0011] Preferably, a second spring is fixed to the top of the movable plate, and the bottom of the movable plate is fixed to four groups of clips distributed in an array along its axis, two groups of clips are arranged along the length direction of the frame, and two groups of clips are arranged along the width direction of the frame. The bottom inner wall of the mounting groove is provided with four groups of docking grooves distributed in an array along its axis, and the docking grooves are engaged with the clips.

[0012] Preferably, both ends of the abutment plate are fixedly connected with abutment rods of a cylindrical structure, and the top of the clamping plate is provided with clamping teeth arranged along the length direction thereof.

[0013] Preferably, a downwardly recessed docking groove is provided on the top of the push plate, the bottom of the docking groove is a semicircular structure, and an outer thread that is sleeved with the outer circle thread of the rotating rod is provided on the inner side wall of the bottom of the docking groove.

[0014] Preferably, the docking mechanism includes a U-shaped bottom bracket, with support rods fixed at both ends of one side of the bottom bracket close to the middle position of the frame, telescopic rods are slidably sleeved on the tops of the two groups of support rods, a third spring is installed at the end of the telescopic rod extending into the support rod, the tops of the two groups of telescopic rods are fixed with the same top support plate, a first placement groove is provided at the top of the end of the top support plate away from the support rod, a second placement groove is provided at the top of the bottom bracket just below the first placement groove, a fastening screw threadedly sleeved with the bottom bracket is installed on one side of the support rod close to the middle position of the frame, a turntable is installed on the fastening screw, and the frame extends into one end of the inner circle of the moving mechanism and seems to have guide grooves slidably connected to the bottom bracket on both sides.

[0015] The method for using the device for accurately aligning and lowering a large-diameter and extra-long steel cage in sections comprises the following steps:

[0016] S1 steel cage production

[0017] The steel cage is cut in the steel processing workshop and made in sections in the same groove. The main bars are connected by straight threads. The acoustic detection tube is installed when the steel cage is processed in the same groove. The joints are threaded joints, and the height is consistent for docking. The main reinforcement of the steel cage is two threaded steel bars bundled together with a spacing of 10cm. The difficulty of straight thread connection is greatly increased. We use positive and negative straight thread heads to connect the two main bars in the same bundle, screwing them in clockwise and counterclockwise directions respectively to ensure the connection quality.

[0018] S2 steel cage inspection before lowering

[0019] Before lowering the steel cage, a hole detector is used to check the hole depth, verticality, diameter, and sediment thickness. After the hole detection is completed, the drilling rig is moved to transport the steel cage to the top of the alignment and lowering device;

[0020] S3 alignment and lowering device assembly

[0021] First, place the two sets of brackets of the bottom support mechanism at the opening of the hole pile, so that the two sets of brackets form a support frame with a square structure, and use screws to fix the reinforcing plate to the bracket. Then, connect the front bracket and the rear bracket of the mobile mechanism that are slidably connected to the bracket to form a square structure, and use screws to fix the extension plate to the front bracket. At this time, the bottom support mechanism and the mobile mechanism are placed at the opening of the hole pile, and then adjust the level of the bottom support mechanism and the mobile mechanism so that the bottom support mechanism and the mobile mechanism are in a horizontal placement state;

[0022] S4 length calculation

[0023] The diameter of the hole pile hole is R, the length of the moving mechanism is H, the distance between the connecting rod and the side of the adjacent moving mechanism is A, the distance between the connecting rod and the center of the hole pile hole is B, and the length of the abutment plate is C. Based on the abutment plates on the four sides of the moving mechanism abutting against the inner wall of the hole pile hole, the center line of the moving mechanism is made coaxial with the center line of the hole pile hole. At this time, the length of B is calculated using R and C using the Pythagorean theorem. The sum of the lengths of A and B is half of H, thereby obtaining the length of the distance A between the connecting rod and the side of the adjacent moving mechanism. When adjusting the position of the connecting rod, it is only necessary to adjust the distance between the connecting rod and the side of the adjacent moving mechanism.

[0024] S5 Alignment Mechanism Installation

[0025] The card plate inside the frame is pushed downward, at this time the external thread on the docking groove of the pushing block at the bottom of the card plate does not contact the rotating rod, then the frame is extended along the first docking hole, the second docking hole or the third docking hole on the moving mechanism, and at the same time the four groups of frames are extended to the same length inside the moving mechanism, then the card plate is pushed to move along the length direction of the frame, and the card plate, driven by the tensioning mechanism, the adjusting plate and the abutment plate continue to move along the length direction of the frame, until the distance between the connecting rod at the middle position of the top of the abutment plate and the side edge of the adjacent moving mechanism is A, the card plate is stopped from being pushed, and then the card plate is released. Under the action of the first spring, the card plate moves upward and is engaged with the limiting groove reserved on the inner side wall of the top of the first docking hole, the second docking hole or the third docking hole;

[0026] S6 alignment mechanism debugging

[0027] When the two ends of the abutment plate are in contact with each other, the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the abutment plate are in contact with each other, and the two ends of the

[0028] S7 steel cage lowering and alignment

[0029] Use a crane to lower the steel cage from above the pile hole. At this time, slide the bottom bracket on the docking mechanism from the opening of the guide slot on the frame to the frame, and adjust the position of the bottom bracket at the same time. Adjust the position of the second placement slot for placing the longitudinal reinforcement of the steel cage and then adjust the steel cage so that the longitudinal reinforcement of the steel cage is placed on the second placement slot. Then, put the connecting sleeve for connecting the main reinforcement of the steel cage on the top of the main reinforcement of the steel cage on the second placement slot, thus completing the positioning and lifting operation of the steel cage entering the pile hole; then transport the steel cage for docking to the top of the pile hole by the crane, and make the docking steel cage move downward, and the docking The longitudinal reinforcement of the steel cage is placed on the first placement groove of the top support plate, and the butted steel cage is rotated at the same time so that the main reinforcement on the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile. Then, the butted steel cage moves downward with the crane, and the main reinforcement of the butted steel cage extends to the top of the connecting sleeve. When the connecting sleeve is rotated, the main reinforcement of the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile under the action of the thread. When the butt joint is completed, the bottom bracket is moved away from the axis of the hole of the pile, and the bottom bracket and the top support plate are separated from the steel cage to complete the butt joint. Then, the steel cage is installed in the same way as above and lowered for butt joint in turn.

[0030] In the present invention,

[0031] By setting up the bottom support mechanism, moving mechanism, alignment mechanism, docking mechanism, frame, rotating rod, clamping plate, pushing plate, pull rod, adjustment plate, tightening mechanism, installation groove, movable plate, connecting rod and abutment plate, the design combines the alignment device below, which is easy and quick to install and convenient to transport and carry. At the same time, it can be suitable for the alignment and docking operation below the steel cage inside the pile holes of different diameters, so that the steel cage is coaxial with the pile hole, ensuring that the steel cage remains in a vertical state when below, and the operation is convenient to reduce the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of the device for accurately aligning and lowering a large-diameter and ultra-long steel cage in sections proposed by the present invention;

[0033] Figure 2 It is a structural schematic diagram of the alignment mechanism of the precise alignment and segmented lowering device of the large-diameter and super-long steel cage proposed by the present invention;

[0034] Figure 3 It is a partially enlarged structural schematic diagram of the precise alignment and segmented lowering device for large-diameter and ultra-long steel cages proposed by the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the push plate of the device for accurately aligning and lowering the large-diameter and ultra-long steel cage in sections proposed by the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the bottom support mechanism of the device for accurately aligning and lowering large-diameter and ultra-long steel cages proposed by the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the moving mechanism of the precise alignment and segmented lowering device of the large-diameter and super-long steel cage proposed by the present invention;

[0038] Figure 7 This is a schematic structural diagram of the docking mechanism of the precise alignment and segmented lowering device for the large-diameter and extra-long steel cage proposed in the present invention.

[0039] In the figure: 1 bottom supporting mechanism, 11 horizontal plate, 12 vertical plate, 13 first slide, 14 second slide, 2 moving mechanism, 21 front bracket, 22 rear bracket, 23 extension plate, 24 second docking hole, 3 alignment mechanism, 4 docking mechanism, 31 frame, 32 rotating rod, 33 card plate, 34 push plate, 35 pull rod, 36 adjustment plate, 37 tensioning mechanism, 38 installation groove, 39 movable plate, 310 connecting rod, 311 abutment plate, 312 docking groove, 41 bottom bracket, 42 guide groove, 43 support rod, 44 top bracket, 45 first placement groove, 46 second placement groove, 47 fastening screw, 48 telescopic rod. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Reference Figure 1-7 , a precise alignment and segmented lowering device for large-diameter and ultra-long steel cages, comprising a bottom support mechanism 1 arranged in a square shape, characterized in that a moving mechanism 2 with a square structure is slidably connected to the top of the bottom support mechanism 1, and an alignment mechanism 3 is slidably sleeved on all four sides of the moving mechanism 2, and the alignment mechanism 3 is extended into the position of the inner circle of the moving mechanism 2 and is detachably connected to a docking mechanism 4;

[0042] The alignment mechanism 3 includes a rectangular frame 31 that is slidably sleeved with the moving mechanism 2. The frame 31 is movably sleeved with a rotating rod 32 arranged along its length direction. The rotating rod 32 extends into the top of the inner circle of the frame 31 and is installed with a long strip structure card plate 33 arranged along the length direction of the frame 31. The card plate 33 is slidably connected to the adjacent inner side walls of the frame 31 on both sides of its length direction. Push plates 34 are fixedly connected to both sides of the bottom of the card plate 33. The bottoms of the two groups of push plates 34 are hinged with pull rods 35. The bottoms of the two groups of pull rods 35 are hinged with The same push block 313 has a cylindrical mounting groove 38 inside, a disc-shaped movable plate 39 is slidably sleeved inside the mounting groove 38, a connecting rod 310 coaxially arranged along the bottom of the movable plate 39 is fixedly connected, one end of the connecting rod 310 extending out of the bottom of the mounting groove 39 is fixedly connected to a contact plate 311 vertically arranged therewith, an adjusting plate 36 slidably connected to the frame 31 is installed on one side of the movable plate 39, and a tensioning mechanism 37 fixedly connected to the clamping plate 33 is fixedly connected to the top two ends of the adjusting plate 36.

[0043] In particular, the bottom support mechanism 1 includes two groups of U-shaped brackets arranged opposite to each other, the bracket includes a horizontal plate 11, both ends of the horizontal plate 11 are fixedly connected to vertical plates 12, the top of the vertical plate 12 is provided with a first slide 13 arranged along the length direction thereof, and the top of the horizontal plate 11 is provided with a second slide 14 arranged along the length direction thereof, and the vertical plate 12 of one of the brackets is fixedly connected to reinforcing plates on both sides of one end away from the horizontal plate 11 connected thereto, and the first slide 13 and the second slide 14 are both slidably sleeved with sliders fixed to the bottom of the moving mechanism 2 directly above them.

[0044] Specifically, the moving mechanism 2 includes a front end bracket 21 and a rear end bracket 22 of a U-shaped structure arranged opposite to each other, and extension plates 23 are fixedly connected on both sides of one end of the rear end bracket 22 close to the front end bracket 21, and the extension plate 23 penetrates a first docking hole 23, and both ends of the side of the front end bracket 21 close to the rear end bracket 22 are penetrated by second docking holes 24 connected to the first docking holes 23, and the middle position of the side where the front end bracket 21 and the rear end bracket 22 are away from each other is penetrated by a third docking hole, and the first docking hole 23, the second docking hole 24 and the third docking hole are slidably connected with the adjacent alignment mechanism 3.

[0045] It is worth noting that the tensioning mechanism 37 includes a sleeve fixedly connected to the top of the adjustment plate 36, the top of the sleeve is movably sleeved with a push rod fixedly connected to the bottom of the clamping plate 33, and one end of the push rod extending into the sleeve is fixedly connected to a first spring.

[0046] In addition, a second spring is fixed to the top of the movable plate 39, and the bottom of the movable plate 39 is fixed to four groups of clips distributed in an array along its axis, two groups of clips are arranged along the length direction of the frame 31, and two groups of clips are arranged along the width direction of the frame 31. The bottom inner wall of the mounting groove 38 is provided with four groups of docking grooves distributed in an array along its axis, and the docking grooves are clipped with the clips.

[0047] In addition, both ends of the abutting plate 311 are fixedly connected with abutting rods of a cylindrical structure, and the top of the clamping plate 33 is provided with clamping teeth arranged along the length direction thereof.

[0048] Furthermore, a downwardly recessed docking groove 312 is provided on the top of the push plate 34 , and the bottom of the docking groove 312 is a semicircular structure. The bottom inner wall of the docking groove 312 is provided with an external thread that is sleeved with the outer circle thread of the rotating rod 32 .

[0049] Furthermore, the docking mechanism 4 includes a U-shaped bottom bracket 41, and both ends of the bottom bracket 41 on one side close to the middle position of the frame 31 are fixedly connected with support rods 43, and the tops of the two groups of support rods 43 are slidably sleeved with telescopic rods 48, and a third spring is installed at one end of the telescopic rods 48 extending into the support rods 43, and the tops of the two groups of telescopic rods 48 are fixedly connected with the same top support plate 44, and a first placement groove 45 is provided at the top of the end of the top support plate 44 away from the support rod 43, and a second placement groove 46 located at the top of the bottom bracket 41 is provided directly below the first placement groove 45, and a fastening screw 47 threadedly sleeved with the bottom bracket 41 is installed on one side of the support rod 43 close to the middle position of the frame 31, and a turntable is installed on the fastening screw 47, and the frame 31 extends into one end of the inner circle of the moving mechanism 2 and seems to have guide grooves 42 on both sides that are slidably connected with the bottom bracket 41.

[0050] It should be noted that the top threads of the front bracket 21 and the rear bracket 22 are sleeved with locking rods that abut against the top of the bottom support mechanism 1;

[0051] The method for using the device for accurately aligning and lowering a large-diameter and extra-long steel cage in sections comprises the following steps:

[0052] S1 steel cage production

[0053] The steel cage is cut in the steel processing workshop and made in sections in the same groove. The main bars are connected by straight threads. The number of joints in each section is not more than 50%, and the distance between adjacent joint sections is not less than 1.5m. The acoustic detection pipe is installed when the steel cage is processed in the same groove. The joints are threaded joints, and the height is consistent for docking. The main reinforcement of the steel cage is two threaded steel bars bundled together with a spacing of 10cm. The difficulty of straight thread connection is greatly increased. We use positive and negative straight thread heads. When connecting the two main bars in the same bundle, they are screwed in clockwise and counterclockwise respectively to ensure the connection quality.

[0054] S2 steel cage inspection before lowering

[0055] Before lowering the steel cage, the TS-K100DC(B) hole detector is used to check the hole depth, verticality, diameter, and sediment thickness. After the hole detection is completed, the drilling rig is moved to transport the steel cage to the top of the alignment and lowering device.

[0056] S3 alignment and lowering device assembly

[0057] First, place the two sets of brackets of the bottom support mechanism 1 at the opening of the hole pile, so that the two sets of brackets form a support frame with a square structure, and use screws to fix the reinforcing plate to the bracket, then connect the front bracket 21 and the rear bracket 22 of the mobile mechanism 2 that are slidably connected to the bracket to form a square structure, and use screws to fix the extension plate 23 to the front bracket 21. At this time, the bottom support mechanism 1 and the mobile mechanism 2 are placed at the opening of the hole pile, and then adjust the level of the bottom support mechanism 1 and the mobile mechanism 2 so that the bottom support mechanism 1 and the mobile mechanism 2 are in a horizontal placement state;

[0058] S4 length calculation

[0059] The diameter of the hole pile hole is R, the length of the mobile mechanism 2 is H, the distance between the connecting rod 310 and the side of the adjacent mobile mechanism 2 is A, the distance between the connecting rod 310 and the center of the hole pile hole is B, and the length of the abutment plate 311 is C. Based on the abutment plates 311 on the four sides of the mobile mechanism 2 abutting against the inner wall of the hole pile hole, the center line of the mobile mechanism 2 is made coaxial with the center line of the hole pile hole. At this time, the length of B is calculated using R and C using the Pythagorean theorem. The sum of the lengths of A and B is half of H, thereby obtaining the length of the distance A between the connecting rod 310 and the side of the adjacent mobile mechanism 2. When adjusting the position of the connecting rod 310, it is only necessary to adjust the distance between the connecting rod 310 and the side of the adjacent mobile mechanism 2.

[0060] S5 Alignment Mechanism Installation

[0061] When the locking plate 33 is unlocked, the locking plate 33 is unlocked and the locking plate 33 is unlocked, and the locking plate 33 is unlocked, and the locking plate 33 is unlocked.

[0062] S6 alignment mechanism debugging

[0063] First, rotate the rotating rod 32 of the frame 31 of the alignment mechanism 3 on one side of the moving mechanism 2. In order to enable the two groups of pushing blocks 34 to move toward or away from each other, the outer ring of the rotating rod 32 is provided with an external thread symmetrically arranged along the middle thereof. The rotating rod 32 causes the two groups of pushing blocks 34 to move toward each other. Then the pull rod 35 pushes the pushing block 313 to move downward, and then the abutment plate 311 is extended from the bottom opening of the frame 31. At this time, the abutment plate 311 moves downward from the top opening of the hole pile hole to the inside of the hole pile hole. Then, the abutment plate 311 is pushed upward, and the connecting rod 310 drives the movable plate 39 to move upward. At this time, the clamping strip at the bottom of the movable plate 39 is not engaged with the docking groove at the bottom of the installation groove 38, and then the abutting plate 311 is rotated 90 degrees to make the abutting plate 311 move from being parallel to the frame 31 to being perpendicular to the frame 31, and then the moving mechanism 2 is pushed to make the moving mechanism 2 move along the lateral and vertical directions of the bottom support mechanism 1 until the two ends of the abutting plate 311 abut against the inner wall of the hole pile hole. When the two ends of the abutting plate 311 abut against the inner wall of the hole pile hole, the center line of the moving mechanism 2 coincides with the center line of the hole pile hole, and then the locking rod on the moving mechanism 2 is tightened to connect the moving mechanism 2 and the bottom support mechanism 1 without relative sliding.

[0064] S7 steel cage lowering and alignment

[0065] The steel cage is lowered from the top of the pile hole by a crane. At this time, the bottom bracket 41 on the docking mechanism 4 is slid from the opening of the guide groove 42 on the frame 31 to the frame 31. At the same time, the position of the bottom bracket 41 is adjusted, and the position of the second placement groove 46 for placing the longitudinal reinforcement of the steel cage is adjusted. Then, the steel cage is adjusted so that the longitudinal reinforcement of the steel cage is placed on the second placement groove 46. Then, the connecting sleeve for connecting the main reinforcement of the steel cage is placed on the top of the main reinforcement of the steel cage on the second placement groove 46. In this way, the positioning and lifting operation of the steel cage entering the pile hole is completed; then, the steel cage for docking is transported to the top of the pile hole by a crane, and the docked steel cage moves downward. The longitudinal reinforcement of the butted steel cage is placed on the first placement groove 45 of the top support plate 44, and the butted steel cage is rotated at the same time so that the main reinforcement on the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile, and then the butted steel cage moves downward with the crane, and the main reinforcement of the butted steel cage extends to the top of the connecting sleeve, and when the connecting sleeve is rotated, the main reinforcement of the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile under the action of the thread, and when the butt joint is completed, the bottom bracket 41 is moved away from the axis of the hole of the pile, and the bottom bracket 41 and the top support plate 44 are separated from the steel cage to complete the butt joint, and then the steel cage is installed in the same way as above to be lowered and butt jointed in turn.

[0066] This design combines the alignment device below, which is easy and quick to install and convenient to transport and carry. At the same time, it can be suitable for the alignment and docking operation below the steel cage inside the pile holes of different diameters, so that the steel cage and the pile hole are coaxial, ensuring that the steel cage remains in a vertical state when below, and the operation is convenient to reduce the labor intensity of the operator.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for accurately aligning and lowering large-diameter and extra-long steel cages in sections, comprising a bottom support mechanism arranged in a square shape, characterized in that: The top of the bottom support mechanism is slidably connected to a moving mechanism of a square structure, and the four sides of the moving mechanism are slidably sleeved with alignment mechanisms, and the alignment mechanism is detachably connected to a docking mechanism at a position where it extends into the inner circle of the moving mechanism; The cam is provided with a plurality of movable members, each of which is provided with a plurality of movable members, and the movable members are provided with a plurality of movable members at the bottom, and the movable members are provided with a plurality of movable members at the bottom. The bottom support mechanism includes two groups of U-shaped brackets arranged opposite to each other, the bracket includes a horizontal plate, both ends of the horizontal plate are fixedly connected to vertical plates, the top of the vertical plate is provided with a first slideway arranged along its length direction, and the top of the horizontal plate is provided with a second slideway arranged along its length direction, and the vertical plate of one of the brackets is fixedly connected to a reinforcing plate on both sides of one end away from the horizontal plate connected thereto, and the insides of the first slideway and the second slideway are slidably sleeved with a slider fixed to the bottom of the moving mechanism directly above them The docking mechanism includes a U-shaped bottom bracket, both ends of the bottom bracket are fixed with support rods on one side close to the middle position of the frame, telescopic rods are slidably sleeved on the tops of the two groups of support rods, a third spring is installed on the end of the telescopic rod extending into the support rod, the tops of the two groups of telescopic rods are fixed with the same top support plate, a first placement groove is provided on the top of the end of the top support plate away from the support rod, a second placement groove is provided at the top of the bottom bracket just below the first placement groove, a fastening screw threadedly sleeved with the bottom bracket is installed on one side of the support rod close to the middle position of the frame, a turntable is installed on the fastening screw, and the frame extends into one end of the inner circle of the moving mechanism and seems to have guide grooves slidably connected to the bottom bracket on both sides.

2. The precise alignment and segmented lowering device for large-diameter and ultra-long steel cages according to claim 1 is characterized in that: The moving mechanism includes a front end bracket and a rear end bracket of a U-shaped structure arranged opposite to each other, and extension plates are fixedly connected to both sides of one end of the rear end bracket close to the front end bracket, and the extension plate penetrates a first docking hole, and second docking holes connected to the first docking hole are penetrated at both ends of the side of the front end bracket close to the rear end bracket, and third docking holes are penetrated in the middle position of the side where the front end bracket and the rear end bracket are away from each other, and the first docking hole, the second docking hole and the third docking hole are slidably connected with adjacent alignment mechanisms.

3. The precise alignment and segmented lowering device for large-diameter and ultra-long steel cage according to claim 1 is characterized in that: The tensioning mechanism comprises a sleeve fixedly connected to the top of the adjusting plate, a push rod fixedly connected to the bottom of the clamping plate is movably sleeved on the top of the sleeve, and a first spring is fixedly connected to one end of the push rod extending into the sleeve.

4. The precise alignment and segmented lowering device for large-diameter and ultra-long steel cage according to claim 1 is characterized in that: A second spring is fixedly connected to the top of the movable plate, and four groups of clips are fixedly connected to the bottom of the movable plate along its axial array. Two groups of clips are arranged along the length direction of the frame, and two groups of clips are arranged along the width direction of the frame. The bottom inner wall of the installation groove is provided with four groups of docking grooves along its axial array, and the docking grooves are connected with the clips.

5. The precise alignment and segmented lowering device for large-diameter and ultra-long steel cage according to claim 1 is characterized in that: Both ends of the abutment plate are fixedly connected with abutment rods of cylindrical structure, and the top of the clamping plate is provided with clamping teeth arranged along the length direction thereof.

6. The precise alignment and segmented lowering device for large-diameter and ultra-long steel cage according to claim 1 is characterized in that: The top of the push plate is provided with a downwardly concave docking groove, the bottom of which is a semicircular structure, and the inner side wall of the bottom of the docking groove is provided with an external thread sleeved with the outer circle thread of the rotating rod.

7. The method for using the device for precise alignment and segmented lowering of large-diameter and ultra-long steel cages is characterized in that: The following steps are involved: S1 steel cage production The steel cage is cut in the steel processing workshop and made in sections in the same groove. The main bars are connected by straight threads. The acoustic detection tube is installed when the steel cage is processed in the same groove. The joints are threaded joints with the same height for easy docking. The main bars of the steel cage are two threaded steel bars bundled together with a spacing of 10cm. The difficulty of straight thread connection is greatly increased. We use positive and negative straight thread heads to connect the two main bars in the same bundle, screwing them in clockwise and counterclockwise directions respectively to ensure the connection quality. S2 steel cage inspection before lowering Before lowering the steel cage, a hole detector is used to check the hole depth, verticality, diameter, and sediment thickness. After the hole detection is completed, the drilling rig is moved to transport the steel cage to the top of the alignment and lowering device; S3 alignment and lowering device assembly First, place the two sets of brackets of the bottom support mechanism at the opening of the hole pile, so that the two sets of brackets form a support frame with a square structure, and use screws to fix the reinforcing plate to the bracket. Then, connect the front bracket and the rear bracket of the mobile mechanism that are slidably connected to the bracket to form a square structure, and use screws to fix the extension plate to the front bracket. At this time, the bottom support mechanism and the mobile mechanism are placed at the opening of the hole pile, and then adjust the level of the bottom support mechanism and the mobile mechanism so that the bottom support mechanism and the mobile mechanism are in a horizontal placement state; S4 length calculation The diameter of the hole pile hole is R, the length of the moving mechanism is H, the distance between the connecting rod and the side of the adjacent moving mechanism is A, the distance between the connecting rod and the center of the hole pile hole is B, and the length of the abutment plate is C. Based on the abutment plates on the four sides of the moving mechanism abutting against the inner wall of the hole pile hole, the center line of the moving mechanism is made coaxial with the center line of the hole pile hole. At this time, the length of B is calculated using R and C using the Pythagorean theorem. The sum of the lengths of A and B is half of H, thereby obtaining the length of the distance A between the connecting rod and the side of the adjacent moving mechanism. When adjusting the position of the connecting rod, it is only necessary to adjust the distance between the connecting rod and the side of the adjacent moving mechanism. S5 Alignment Mechanism Installation The card plate inside the frame is pushed downward, at this time the external thread on the docking groove of the pushing block at the bottom of the card plate does not contact the rotating rod, then the frame is extended along the first docking hole, the second docking hole or the third docking hole on the moving mechanism, and at the same time the four groups of frames are extended to the same length inside the moving mechanism, then the card plate is pushed to move along the length direction of the frame, and the card plate, driven by the tensioning mechanism, the adjusting plate and the abutment plate continue to move along the length direction of the frame, until the distance between the connecting rod at the middle position of the top of the abutment plate and the side edge of the adjacent moving mechanism is A, the card plate is stopped from being pushed, and then the card plate is released. Under the action of the first spring, the card plate moves upward and is engaged with the limiting groove reserved on the inner side wall of the top of the first docking hole, the second docking hole or the third docking hole; S6 alignment mechanism debugging The two sets of pushing blocks are moved in the direction of approaching or moving away from each other, and the outer ring of the rotating rod is provided with an external thread symmetrically arranged along the middle thereof. The rotating rod makes the two sets of pushing blocks move in the direction of approaching each other, and then the pull rod pushes the pushing blocks downward, and then the abutment plate is extended from the bottom opening of the frame. At this time, the abutment plate moves downward from the top opening of the hole pile hole to the inside of the hole pile hole, and then the abutment plate is pushed upward, and the connecting rod drives the movable plate to move upward. At this time, the clamping strip at the bottom of the movable plate is not engaged with the docking groove at the bottom of the installation groove, and then the abutment plate is rotated 90 degrees to make the abutment plate move from parallel to the frame to a vertical state of the frame, and then the moving mechanism is pushed to make the moving mechanism move along the horizontal and vertical directions of the bottom support mechanism until the two ends of the abutment plate abut against the inner side wall of the hole pile hole. When the two ends of the abutment plate abut against the inner side wall of the hole pile hole, the center line of the moving mechanism coincides with the center line of the hole pile hole, and then the locking rod on the moving mechanism is tightened to make the moving mechanism and the bottom support mechanism connected without relative sliding; S7 steel cage lowering and alignment Use a crane to lower the steel cage from above the pile hole. At this time, slide the bottom bracket on the docking mechanism from the opening of the guide slot on the frame to the frame, and adjust the position of the bottom bracket at the same time. Adjust the position of the second placement slot for placing the longitudinal reinforcement of the steel cage and then adjust the steel cage so that the longitudinal reinforcement of the steel cage is placed on the second placement slot. Then, put the connecting sleeve for connecting the main reinforcement of the steel cage on the top of the main reinforcement of the steel cage on the second placement slot, thus completing the positioning and lifting operation of the steel cage entering the pile hole; then transport the steel cage for docking to the top of the pile hole by the crane, and make the docking steel cage move downward, and the docking The longitudinal reinforcement of the steel cage is placed on the first placement groove of the top support plate, and the butted steel cage is rotated at the same time so that the main reinforcement on the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile. Then, the butted steel cage moves downward with the crane, and the main reinforcement of the butted steel cage extends to the top of the connecting sleeve. When the connecting sleeve is rotated, the main reinforcement of the butted steel cage is butted with the main reinforcement of the steel cage entering the hole of the pile under the action of the thread. When the butt joint is completed, the bottom bracket is moved away from the axis of the hole of the pile, and the bottom bracket and the top support plate are separated from the steel cage to complete the butt joint. Then, the steel cage is lowered and butt jointed in the same way as above.

Images