A method for hoisting a steel reinforcement cage in sections

Abstract

The present invention provides a method for hoisting a steel reinforcement cage in sections, which is used to hoist the steel reinforcement cage in sections into a pile hole. A hoisting mechanism and a trolley are adopted. The hoisting mechanism includes a hoisting frame, a hook, a hook driving mechanism and a steel reinforcement cage limiting device. The hoisting frame is erected above the pile hole, and the hook is located directly above the center of the pile hole. The trolley includes a vehicle frame, a placing plate, a pair of steel reinforcement cage grippers and a gripper driving mechanism. The pair of steel reinforcement cage grippers are respectively installed on the vehicle frame through the gripper driving mechanism. The horizontally arranged steel reinforcement cage is transported to the predetermined hoisting position by the trolley. When the trolley is at the predetermined hoisting position, the straight line where the pair of steel reinforcement cage grippers are located passes through the axis of the steel reinforcement cage when it is in the pile hole. The steel reinforcement cage rotates with the steel reinforcement cage gripper as the fulcrum during the hoisting process, so that the steel reinforcement cage rotates from the horizontal state to the vertical state and is coaxial with the pile hole, solving the problems of high construction space requirements, poor positioning and verticality adjustment accuracy, and low hoisting efficiency during the sectional hoisting of the steel reinforcement cage.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a method for hoisting a steel reinforcement cage in sections, such as the technology for hoisting a steel reinforcement cage in sections. Background Art

[0002] Currently, the technology for hoisting a steel reinforcement cage in sections, for example, is widely used in some foundation pit projects where the designed length of the pile foundation is relatively long, the site restrictions are relatively large, or the specifications of the hoisting machinery do not match.

[0003] At the present stage, the common steps for hoisting a steel reinforcement cage in sections after the pile hole construction is completed are as follows: First, use equipment such as trailers and trolleys to transport the steel reinforcement cage to the designated position. Then, use a mobile crane on-site to lift a single-section steel reinforcement cage directly above the pile hole. The on-site construction personnel cooperate with each other and use the naked eye or some simple auxiliary marks to perform centering and perpendicularity correction. Subsequently, lower it into the pile hole and use steel pipes, etc. for temporary fixation. Then, lift the next section of the steel reinforcement cage, and weld it after centering and correction. Repeat the above steps until the designed length of the steel reinforcement cage is reached, and then fix it by methods such as welding and wire binding.

[0004] However, there are many problems worthy of improvement in the existing technology for hoisting a steel reinforcement cage in sections: First, the required construction space is relatively large. Not only does it need to ensure that there is enough space above the pile hole to lift the height of a single-section steel reinforcement cage, but there also needs to be enough construction space for the mobile crane around. Second, the stability of the steel reinforcement cage during hoisting is poor, and it is easy to skew, resulting in an increased probability of colliding with the hole wall and inconvenient control of perpendicularity. Third, the control accuracy of the centering and positioning error varies greatly. Relying on the positioning and correction by the naked eye requires high requirements for construction personnel, and the construction quality of different construction personnel is different, making quality control inconvenient. Summary of the Invention

[0005] The present invention aims to invent a method for hoisting a steel reinforcement cage in sections, and aims to invent a method for hoisting a steel reinforcement cage in sections that can take into account both positioning and perpendicularity correction, and solve the problems of high requirements for construction space, poor stability, and poor accuracy of positioning and perpendicularity adjustment during the hoisting of a steel reinforcement cage in sections.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A method for hoisting a steel reinforcement cage in sections, used for hoisting a steel reinforcement cage in sections into a pile hole, includes the following steps:

[0008] Step 1, install a segmented hoisting device for the steel reinforcement cage at the pile hole. The segmented hoisting device for the steel reinforcement cage includes a hoisting frame, a hook, a hook driving mechanism, and a steel reinforcement cage limiting device. The hoisting frame is erected above the pile hole. The steel reinforcement cage limiting device is arranged at the lower part of the hoisting frame. The hook is arranged at the upper part of the hoisting frame. The hook drives the steel reinforcement cage to move up and down under the action of the hook driving mechanism. When the hook is in a natural vertical state, it is located directly above the center of the pile hole. The steel reinforcement cage limiting device can limit and fix the steel reinforcement cage, so that the steel reinforcement cage remains coaxial with the pile hole in a vertical state. The steel reinforcement cage limiting device includes two horizontally arranged transverse positioning pipes, a longitudinal positioning pipe, and a locking rod. One end of each of the two transverse positioning pipes is detachably installed on the hoisting frame respectively. The transverse positioning pipes can move longitudinally respectively, and the distance between the two transverse positioning pipes can be adjusted. The transverse positioning pipes, the longitudinal positioning pipe, and the locking rod are all horizontally arranged. Both ends of the longitudinal positioning pipe are detachably installed on the corresponding transverse positioning pipes respectively, and the longitudinal positioning pipe is perpendicular to the transverse positioning pipes. The locking rod is parallel to the longitudinal positioning pipe. Both ends of the longitudinal positioning pipe can move horizontally along the axial direction of the corresponding transverse positioning pipe respectively, and both ends of the longitudinal positioning pipe can be fixed on the corresponding transverse positioning pipes. The two transverse positioning pipes and the longitudinal positioning pipe can be adjusted to the position where three sides are tangent to the steel reinforcement cage when it is coaxial with the pile hole. Both ends of the locking rod are detachably installed on the corresponding transverse positioning pipes respectively. Both ends of the locking rod can move along the axial direction of the corresponding transverse positioning pipe respectively, and both ends of the locking rod can be fixed on the corresponding transverse positioning pipes. The locking rod can horizontally penetrate through the steel reinforcement cage, and the locking rod horizontally passes through the axis of the steel reinforcement cage when it is in the pile hole;

[0009] Step 2: Horizontally place the steel reinforcement cage on a trolley. The trolley includes a frame, a placement board, a pair of steel reinforcement cage grippers, and a gripper driving mechanism. The pair of steel reinforcement cage grippers are respectively installed on the frame through the gripper driving mechanism. The gripper driving mechanism can drive the corresponding steel reinforcement cage gripper to move horizontally and vertically, and the pair of steel reinforcement cage grippers can respectively rotate freely around their own axis. The placement board is arranged on the frame, and an opening for the steel reinforcement cage to rotate is provided at one end of the placement board. The pair of steel reinforcement cage grippers are located at the opening of the placement board. According to the diameter of the steel reinforcement cage, by adjusting the gripper driving mechanism, the height of the axis of the steel reinforcement cage gripper is made the same as the axis of the steel reinforcement cage when it is horizontally placed on the trolley and the two sides of the steel reinforcement cage are clamped, that is, the horizontal plane where the axis of the steel reinforcement cage gripper is located passes through the axis of the steel reinforcement cage. Adjust the two horizontal positioning pipes and the longitudinal positioning pipe to the positions tangent to the three sides of the steel reinforcement cage when it is coaxial with the pile hole, that is, adjust the two horizontal positioning pipes and the longitudinal positioning pipe to the positions tangent to the three sides of the steel reinforcement cage when it is located in the pile hole. Adjust the position of the locking rod so that the vertical plane where the axis of the locking rod is located passes through the axis of the pile hole, that is, the locking rod horizontally passes through the axis of the steel reinforcement cage when it is located in the pile hole.

[0010] Step 3: Transport the horizontally placed steel reinforcement cage to the predetermined hoisting position by the trolley. When the trolley is at the predetermined hoisting position, the vertical plane where the axis of the steel reinforcement cage gripper is located passes through the axis of the pile hole, that is, the straight line where the pair of steel reinforcement cage grippers are located passes through the axis of the steel reinforcement cage when it is located in the pile hole.

[0011] Step 4: Hook the end of the steel reinforcement cage far from the steel reinforcement cage gripper. During the hoisting process of the steel reinforcement cage, it rotates with the pair of steel reinforcement cage grippers as the fulcrum, so that when the steel reinforcement cage rotates from the horizontal state to the vertical state, the steel reinforcement cage is coaxial with the pile hole.

[0012] Step 5: Remove the locking rod, loosen the steel reinforcement cage gripper, remove the trolley, lower the steel reinforcement cage so that the lower end of the steel reinforcement cage passes through the opening formed by the two horizontal positioning pipes and the longitudinal positioning pipe, and the upper end of the steel reinforcement cage is higher than the steel reinforcement cage limiting device. Insert the locking rod back to the position before removal to fix the steel reinforcement cage.

[0013] Step 6: Transport the next horizontally placed steel reinforcement cage to the predetermined hoisting position by the trolley. When the trolley is at the predetermined hoisting position, the vertical plane where the axis of the steel reinforcement cage gripper is located passes through the axis of the pile hole, that is, the straight line where the pair of steel reinforcement cage grippers are located passes through the axis of the steel reinforcement cage when it is located in the pile hole.

[0014] Step 7, hook the end of the latter steel reinforcement cage far from the steel reinforcement cage gripper, and the latter steel reinforcement cage rotates with the pair of steel reinforcement cage grippers as the fulcrum during the hoisting process, so that when the latter steel reinforcement cage rotates from the horizontal state to the vertical state, the latter steel reinforcement cage is coaxial with the pile hole;

[0015] Step 8, remove the locking rod, loosen the steel reinforcement cage gripper, remove the trolley, lower the latter steel reinforcement cage to the docking position. After the latter steel reinforcement cage is welded and fixed to the previous steel reinforcement cage, remove the locking rod, loosen the steel reinforcement cage gripper, remove the trolley, lower the latter steel reinforcement cage, so that the lower end of the latter steel reinforcement cage passes through the opening formed by the two transverse positioning pipes and the longitudinal positioning pipe, and the upper end of the latter steel reinforcement cage is higher than the steel reinforcement cage limiting device. Insert the locking rod back to the position before removal to fix the latter steel reinforcement cage;

[0016] Step 9, repeat Step 6 to Step 8 until the construction of all steel reinforcement cages is completed.

[0017] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the longitudinal positioning pipe and the locking rod are respectively detachably installed on the corresponding transverse positioning pipes through the first positioning mechanism.

[0018] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the first positioning mechanism includes a first slider, a first screw rod and a first nut. A first chute for the longitudinal positioning pipe and the locking rod to extend into is axially opened on the side of the transverse positioning pipe. A second chute is axially opened on the top of the transverse positioning pipe. The first slider can move along the first chute. A first through hole for the longitudinal positioning pipe or the locking rod to pass through is opened on the first slider. One end of the first screw rod is fixedly connected to the first slider, and the other end of the first screw rod passes through the second chute and is fixed to the transverse positioning pipe through the first nut.

[0019] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the hoisting frame is a square box with an opening on one side. The bottom of the hoisting frame includes two parallel cross bars and a longitudinal bar. The longitudinal bar and the cross bars are both horizontally arranged, and the longitudinal bar is perpendicular to the cross bars. The two ends of the longitudinal bar are respectively fixedly connected to the same side ends of the two cross bars. The transverse positioning pipes are respectively installed on the longitudinal bar through the second positioning mechanism.

[0020] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the second positioning mechanism includes a threaded sleeve and a second bolt. A fourth chute for the transverse positioning pipe to extend into is opened on the side of the longitudinal bar. The transverse positioning pipe can move along the fourth chute. A fifth chute is opened on the top of the longitudinal bar. The threaded sleeve is fixedly arranged on the transverse positioning pipe, and the transverse positioning pipe is fixed on the longitudinal bar by screwing the second bolt through the fifth chute of the longitudinal bar into the threaded sleeve of the transverse positioning pipe.

[0021] Preferably, in the above-described method for hoisting the steel cage in sections, the gripper driving mechanism includes a horizontal adjustment mechanism and a vertical adjustment mechanism. The steel cage gripper is disposed on the horizontal adjustment mechanism. Through the horizontal adjustment mechanism, the corresponding steel cage gripper can be driven to move horizontally and longitudinally. Through the longitudinal movement of the steel cage gripper, the switching between the clamping state and the releasing state of the steel cage by the steel cage gripper is realized. The vertical adjustment mechanism is disposed on the vehicle frame, and through the vertical adjustment mechanism, the corresponding horizontal adjustment mechanism can be driven to move vertically.

[0022] Preferably, in the above-described method for hoisting the steel cage in sections, the horizontal adjustment mechanism includes a hollow tube, a second slider, a second screw, and a fastening nut. A long strip-shaped opening groove is formed in the tube wall of the hollow tube along its own axial direction. The second slider is disposed inside the hollow tube. One end of the second screw is fixedly connected to the second slider, and the other end of the second screw passes through the long strip-shaped opening groove and is locked by the fastening nut. Each steel cage gripper includes a clamping portion for clamping the steel cage and a rotating shaft. One end of the rotating shaft is fixedly connected to the clamping portion, and a cylindrical stopper is provided at the other end of the rotating shaft. An inner cavity for accommodating the cylindrical stopper is formed in the second slider. The cylindrical stopper can rotate around its own axis inside the inner cavity, and the inner cavity can limit the horizontal displacement of the cylindrical stopper. The outer diameter of the through hole is smaller than the outer diameter of the cylindrical stopper. A through hole for the rotating shaft to pass through is formed in the side wall of the second slider close to the clamping portion. A plurality of rollers are arranged between the cylindrical stopper and the inner cavity wall of the second slider.

[0023] Preferably, in the above-described method for hoisting the steel cage in sections, the vertical adjustment mechanism includes a pair of vertical rods and two scaffolding fasteners. The pair of vertical rods are respectively fixed on the vehicle frame. An installation portion is provided on the hollow tube, and a positioning rod hole for the positioning rod to pass through is formed in the installation portion. After the two ends of the positioning rod are manually adjusted to the required height, they are respectively fixed to the corresponding vertical rods through the scaffolding fasteners.

[0024] Preferably, in the above-described method for hoisting the steel cage in sections, the hoisting frame is a square box with one side open. The hoisting frame includes four support columns. A pair of buckles for fixing the relative position between the trolley and the hoisting frame are provided on the vehicle frame. The buckles can be buckled on the outer sides of the support columns of the hoisting frame. When the trolley is pushed to the hoisting predetermined position and the buckles are first buckled on the corresponding support columns of the hoisting frame, through the vertical adjustment mechanism, the corresponding horizontal adjustment mechanism can be driven to move vertically, and through the horizontal adjustment mechanism, the corresponding steel cage gripper can be driven to move horizontally, so that the axis lines of the pair of steel cage grippers are coaxial and perpendicular to the axis line of the pile hole.

[0025] As can be seen from the above disclosed technical solutions, compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] A method for hoisting a steel reinforcement cage in sections, which is used to hoist the steel reinforcement cage in sections into a pile hole. A hoisting mechanism and a trolley are adopted. The hoisting mechanism includes a hoisting frame, a hook, a hook driving mechanism and a steel reinforcement cage limiting device. The hoisting frame is erected above the pile hole. The steel reinforcement cage limiting device can adjust and fix the position of the steel reinforcement cage. When the hook is in a natural vertical state, it is located directly above the center of the pile hole. The trolley includes a vehicle frame, a placement plate, a pair of steel reinforcement cage clamps and a clamp driving mechanism. The pair of steel reinforcement cage clamps are respectively installed on the vehicle frame through the clamp driving mechanism. The horizontally arranged steel reinforcement cage is transported to the hoisting predetermined position by the trolley. When the trolley is at the hoisting predetermined position, the straight line where the pair of steel reinforcement cage clamps are located passes through the axis line of the steel reinforcement cage when it is in the pile hole. The steel reinforcement cage rotates with the steel reinforcement cage clamp as the fulcrum during the hoisting process, so that when the steel reinforcement cage rotates from the horizontal state to the vertical state, the steel reinforcement cage is coaxial with the pile hole, solving the problems of high construction space requirements, poor stability, poor positioning and verticality adjustment accuracy, and low hoisting efficiency during the hoisting of the steel reinforcement cage in sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a steel reinforcement cage hoisting system in sections (before rotation).

[0028] Figure 2 is a structural schematic diagram of a steel reinforcement cage hoisting system in sections (after rotation).

[0029] Figure 3 is a schematic diagram of the principle of a steel reinforcement cage hoisting system in sections.

[0030] Figure 4 is a front view of the trolley.

[0031] Figure 5 is Figure 4 the top view of.

[0032] Figure 6 is Figure 4 the left view of.

[0033] Figure 7 is an assembly schematic diagram of the steel reinforcement cage clamp and the horizontal adjustment mechanism.

[0034] Figure 8 is Figure 7 the top view of.

[0035] Figure 9 is a structural schematic diagram of the hoisting mechanism.

[0036] Figure 10 is Figure 9The right view.

[0037] Figure 11 It is a schematic assembly diagram of the bottom of the lifting frame and the steel cage limiting device.

[0038] Figure 12 It is Figure 11 The top view.

[0039] Figure 13 It is Figure 11 The left view.

[0040] Figure 14 It is a schematic structural diagram of step 2 of a method for hoisting steel cages in sections.

[0041] Figure 15 It is a schematic structural diagram of step 3 of a method for hoisting steel cages in sections.

[0042] Figure 16 It is a schematic structural diagram of step 4 of a method for hoisting steel cages in sections.

[0043] Figure 17 It is a schematic structural diagram of step 5 of a method for hoisting steel cages in sections.

[0044] Figure 18 It is a schematic structural diagram of step 6 of a method for hoisting steel cages in sections.

[0045] Figure 19 It is a schematic structural diagram of step 7 of a method for hoisting steel cages in sections.

[0046] Figure 20 It is a schematic structural diagram of step 8 of a method for hoisting steel cages in sections.

[0047] In the figure: 1 - hoisting mechanism, 11 - hoisting frame, 111 - cross bar, 112 - longitudinal bar, 1121 - fourth chute, 1122 - fifth chute, 113 - support column, 12 - hook, 13 - hook driving mechanism, 131 - winch, 132 - pulley, 133 - rope, 14 - steel cage limiting device, 141 - transverse positioning pipe, 1411 - second chute, 142 - longitudinal positioning pipe, 143 - locking rod, 15 - first positioning mechanism, 151 - first slider, 152 - first screw rod, 153 - first nut, 16 - second positioning mechanism, 161 - threaded sleeve, 162 - second bolt, 17 - anchor cable, 2 - trolley, 21 - vehicle frame, 22 - storage plate, 221 - opening, 23 - steel cage gripper, 231 - gripping part, 232 - rotating shaft, 241 - hollow pipe, 2412 - positioning rod hole, 242 - second slider, 243 - second screw rod, 244 - fastening nut, 245 - roller, 25 - vertical bar, 26 - scaffolding fastener, 27 - wheel leg, 28 - universal wheel, 29 - brake, 30 - horizontal bar, 31 - positioning rod, 32 - buckle, 3 - pile hole, 4 - steel cage. Detailed implementation mode

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical content and features of the present invention will be described in detail below by combining the listed embodiments with the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the present invention. For the convenience of description, the "upper" and "lower" directions mentioned below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation to the technical solution of the present invention.

[0049] Please refer to Figures 1 to 20 , a method for hoisting a steel cage in sections, used for hoisting the steel cage 4 in sections into the pile hole 3, including the following steps:

[0050] Step 1, install a segmented hoisting device for the steel reinforcement cage 4 at the pile hole 3. The segmented hoisting device for the steel reinforcement cage 4 includes a hoisting frame 11, a hook 12, a hook driving mechanism 13, and a steel reinforcement cage limiting device 14. The hoisting frame 11 is erected above the pile hole 3. The steel reinforcement cage limiting device 14 is arranged at the lower part of the hoisting frame 11. The hook 12 is arranged at the upper part of the hoisting frame 11. The hook 12 drives the steel reinforcement cage 4 to move up and down under the action of the hook driving mechanism 13. When the hook 12 is in a natural vertical state, it is directly above the center of the pile hole 3. The steel reinforcement cage limiting device 14 can limit and fix the steel reinforcement cage 4, so that the steel reinforcement cage 4 remains coaxial with the pile hole 3 in a vertical state. The steel reinforcement cage limiting device 14 includes two horizontally arranged transverse positioning pipes 141, a longitudinal positioning pipe 142, and a locking rod 143. One end of each of the two transverse positioning pipes 141 is detachably installed on the hoisting frame 11. The transverse positioning pipes 141 can move longitudinally respectively, and the distance between the two transverse positioning pipes 141 can be adjusted. The transverse positioning pipes 141, the longitudinal positioning pipe 142, and the locking rod 143 are all horizontally arranged. Both ends of the longitudinal positioning pipe 142 are detachably installed on the corresponding transverse positioning pipes 141, and the longitudinal positioning pipe 142 is perpendicular to the transverse positioning pipes 141. The locking rod 143 is parallel to the longitudinal positioning pipe 142. Both ends of the longitudinal positioning pipe 142 can move horizontally along the axial direction of the corresponding transverse positioning pipe 141, and both ends of the longitudinal positioning pipe 142 can be fixed on the corresponding transverse positioning pipes 141. The two transverse positioning pipes 141 and the longitudinal positioning pipe 142 can be adjusted to the position where they are tangent to three sides of the steel reinforcement cage 4 when the steel reinforcement cage 4 is coaxial with the pile hole 3. Both ends of the locking rod 143 are detachably installed on the corresponding transverse positioning pipes 141. Both ends of the locking rod 143 can move along the axial direction of the corresponding transverse positioning pipe 141, and both ends of the locking rod 143 can be fixed on the corresponding transverse positioning pipes 141. The locking rod 143 can horizontally penetrate the steel reinforcement cage 4, and the locking rod 143 horizontally passes through the axis of the steel reinforcement cage 4 when it is in the pile hole 3;

[0051] Step 2, please refer to with emphasis Figure 14, horizontally place the steel reinforcement cage 4 on a trolley 2. The trolley 2 includes a vehicle frame 21, a placement plate 22, a pair of steel reinforcement cage grippers 23, and a gripper drive mechanism. The pair of steel reinforcement cage grippers 23 are respectively installed on the vehicle frame 21 through the gripper drive mechanism. The gripper drive mechanism can drive the corresponding steel reinforcement cage gripper 23 to move horizontally and vertically, and the pair of steel reinforcement cage grippers 23 can respectively rotate freely around their own axis lines. The placement plate 22 is arranged on the vehicle frame 21, and an opening for the steel reinforcement cage 4 to rotate is provided at one end of the placement plate 22. The pair of steel reinforcement cage grippers 23 are located at the opening 221 of the placement plate 22. According to the diameter of the steel reinforcement cage 4, by adjusting the gripper drive mechanism, the height of the axis line of the steel reinforcement cage gripper 23 is made the same as the axis line of the steel reinforcement cage 4 when the steel reinforcement cage 4 is horizontally placed on the trolley 2, and the two sides of the steel reinforcement cage 4 are clamped, that is to say, the horizontal plane where the axis line of the steel reinforcement cage gripper 23 is located passes through the axis line of the steel reinforcement cage 4; adjust the two horizontal positioning pipes 141 and the vertical positioning pipe 142 to the positions tangent to the three sides of the steel reinforcement cage 4 when it is in the pile hole 3; adjust the position of the locking rod 143 so that the vertical plane where the axis line of the locking rod 143 is located passes through the axis line of the pile hole 3, that is to say, the locking rod 143 horizontally passes through the axis line of the steel reinforcement cage 4 when it is in the pile hole 3;

[0052] Step 3, please refer to Figure 15 , transport the horizontally placed steel reinforcement cage 4 to the hoisting predetermined position through the trolley 2. When the trolley 2 is at the hoisting predetermined position, the vertical plane where the axis line of the steel reinforcement cage gripper 23 is located passes through the axis line of the pile hole 3, that is to say, the straight line where the pair of steel reinforcement cage grippers 23 are located passes through the axis line of the steel reinforcement cage 4 when it is in the pile hole 3;

[0053] Step 4, please refer to Figure 16 , hook the end of the steel reinforcement cage 4 away from the steel reinforcement cage gripper 23 with the lifting hook 12. The steel reinforcement cage 4 rotates with the pair of steel reinforcement cage grippers 23 as the fulcrum during the hoisting process, so that when the steel reinforcement cage 4 rotates from the horizontal state to the vertical state, the steel reinforcement cage 4 is coaxial with the pile hole 3;

[0054] Step 5, please refer to Figure 17 , remove the locking rod 143, release the steel reinforcement cage gripper 23, remove the trolley 2, lower the steel reinforcement cage 4, so that the lower end of the steel reinforcement cage 4 passes through the opening formed by the two horizontal positioning pipes 141 and the vertical positioning pipe 142, and the upper end of the steel reinforcement cage 4 is higher than the steel reinforcement cage limiting device 14, and insert the locking rod 143 back to the position before removal to fix the steel reinforcement cage 4;

[0055] Step 6, please refer to Figure 18, the subsequent horizontally arranged steel cage 4 is transported to the predetermined hoisting position by the trolley 2. When the trolley 2 is at the predetermined hoisting position, the vertical plane where the axis line of the steel cage gripper 23 is located passes through the axis line of the pile hole 3. That is to say, the straight line where the pair of steel cage grippers 23 is located passes through the axis line of the steel cage 4 when it is in the pile hole 3;

[0056] Step 7, please refer to Figure 19 , hook the end of the subsequent steel cage 4 that is far away from the steel cage gripper 23 with the lifting hook 12. The subsequent steel cage 4 rotates with the pair of steel cage grippers 23 as the fulcrum during the hoisting process, so that when the subsequent steel cage 4 rotates from the horizontal state to the vertical state, the subsequent steel cage 4 is coaxial with the pile hole 3;

[0057] Step 8, please refer to Figure 20 , remove the locking rod 143, loosen the steel cage gripper 23, remove the trolley 2, lower the subsequent steel cage 4 to the docking position. After the subsequent steel cage 4 is welded and fixed to the previous steel cage 4, remove the locking rod 143, loosen the steel cage gripper 23, remove the trolley 2, and lower the subsequent steel cage 4 so that the lower end of the subsequent steel cage 4 passes through the opening formed by the two transverse positioning pipes 141 and the longitudinal positioning pipe 142. The upper end of the subsequent steel cage 4 is higher than the steel cage limiting device 14, and insert the locking rod 143 back to the position before removal to fix the subsequent steel cage 4;

[0058] Step 9, repeat Steps 6 to 8 until the construction of all the steel cages 4 is completed.

[0059] A method for hoisting a steel reinforcement cage in sections provided in this embodiment, by using a system for hoisting a steel reinforcement cage in sections, the system for hoisting a steel reinforcement cage in sections includes a hoisting mechanism 1 and a trolley 2. The hoisting mechanism 1 includes a hoisting frame 11, a hook 12, a hook driving mechanism 13 and a steel reinforcement cage limiting device 14. The hoisting frame 11 is erected above the pile hole 3. The steel reinforcement cage limiting device 14 is arranged at the lower part of the hoisting frame 11. The steel reinforcement cage limiting device 14 can adjust and fix the position of the steel reinforcement cage 4. The hook 12 is arranged at the upper part of the hoisting frame 11, and when the hook 12 is in a natural vertical state, it is directly above the center of the pile hole 3. The hook 12 drives the steel reinforcement cage 4 to move up and down under the action of the hook driving mechanism 13. The trolley 2 includes a vehicle frame 21, a placement plate 22, a pair of steel reinforcement cage clamps 23 and a clamp driving mechanism. The pair of steel reinforcement cage clamps 23 are respectively installed on the vehicle frame 21 through the clamp driving mechanism. The clamp driving mechanism can drive the corresponding steel reinforcement cage clamp 23 to move horizontally and vertically, and the pair of steel reinforcement cage clamps 23 can respectively rotate freely around their own axis lines. The placement plate 22 is arranged on the vehicle frame 21, and an opening for the steel reinforcement cage 4 to rotate is provided at one end of the placement plate 22. The pair of steel reinforcement cage clamps 23 are located at the opening 221 of the placement plate 22. By providing an opening for the steel reinforcement cage 4 to rotate at one end of the placement plate 22, it can be ensured that the steel reinforcement cage 4 can rotate smoothly around the axis line of the pair of steel reinforcement cage clamps 23 during hoisting. The horizontally arranged steel reinforcement cage 4 is placed on the placement plate 22, and the trolley 2 transports the horizontally arranged steel reinforcement cage 4 to the predetermined hoisting position. When the trolley 2 is at the predetermined hoisting position, the straight line where the pair of steel reinforcement cage clamps 23 are located passes through the axis line of the steel reinforcement cage 4 when it is in the pile hole 3. The hook 12 hoists the end of the steel reinforcement cage 4 far from the steel reinforcement cage clamp 23. The steel reinforcement cage 4 rotates with the steel reinforcement cage clamp 23 as the fulcrum during hoisting. That is to say, during the process of the hook 12 hoisting the steel reinforcement cage 4, the pair of steel reinforcement cage clamps 23 always clamp the steel reinforcement cage 4, so that when the steel reinforcement cage 4 rotates from the horizontal state to the vertical state, the steel reinforcement cage 4 is coaxial with the pile hole 3. Since the pair of steel reinforcement cage clamps 23 can respectively rotate freely around their own axis lines, therefore, the clamping action of the pair of steel reinforcement cage clamps 23 on the steel reinforcement cage 4 during hoisting will not affect the rotation action of the steel reinforcement cage 4.Since the hook 12 is located directly above the center of the pile hole 3 when in a natural vertical state, and the straight line where the pair of steel cage grippers 23 are located passes through the axis of the steel cage 4 when the trolley 2 is at the predetermined hoisting position, the steel cage 4 rotates with the steel cage gripper 23 as the fulcrum during the hoisting process, so that the steel cage 4 can be coaxial with the pile hole 3 when rotating from the horizontal state to the vertical state. That is, the perpendicularity requirement of the steel cage 4 and the centering requirement between the steel cage 4 and the pile hole 3 can be ensured, thus effectively improving the accuracy and speed of positioning and perpendicularity adjustment, improving the hoisting efficiency, saving the construction space, and solving the problems of high construction space requirements, poor stability, poor positioning and perpendicularity adjustment accuracy, and low hoisting efficiency during the segmented hoisting of the steel cage.

[0060] Preferably, in the above-mentioned method for segmented hoisting of the steel cage, the longitudinal positioning pipe 142 and the locking rod 143 are respectively detachably installed on the corresponding transverse positioning pipe 141 through the first positioning mechanism 15. The first positioning mechanism 15 includes a first slider 151, a first screw 152, and a first nut 153. A first chute (not shown) for the longitudinal positioning pipe 142 and the locking rod 143 to extend into is axially opened on the side of the transverse positioning pipe 141, and a second chute 1411 is axially opened on the top of the transverse positioning pipe 141. The first slider 151 can move along the first chute. A first through hole for the longitudinal positioning pipe 142 or the locking rod 143 to pass through is opened on the first slider 151. One end of the first screw 152 is fixedly connected to the first slider 151, and the other end of the first screw 152 passes through the second chute 1411 and is fixed to the transverse positioning pipe 141 through the first nut 153. With the first positioning mechanism 15 having the above structure, not only can the reliable connection between the longitudinal positioning pipe 142 and the locking rod 143 and the transverse positioning pipe 141 be realized, but also the disassembly of the longitudinal positioning pipe 142 or the locking rod 143 can be achieved as long as the first nut 153 is loosened, and the disassembly and assembly are very convenient, significantly improving the construction efficiency. Moreover, for the disassembly and assembly of the locking rod 143, it is not necessary to loosen the first nut 153. Therefore, for the repeated installation and disassembly of the locking rod 143, it is not necessary to reposition the locking rod 143, thus further improving the construction efficiency.

[0061] Of course, the first positioning mechanism 15 can also adopt other forms. For example, the first positioning mechanism includes a first bolt (not shown) and a second nut (not shown). Second through holes (not shown) for the first bolt to pass through are respectively opened on the longitudinal positioning pipe 142 and the locking rod 143. A third chute (not shown) is opened on the transverse positioning pipe 141. The first bolt passes through the second through holes on the longitudinal positioning pipe 142 or the locking rod 143 and the third chute of the transverse positioning pipe 141 in sequence and is fixed through the second nut.

[0062] Preferably, in the above-described method for hoisting the reinforcement cage in sections, the hoisting frame 11 is a square box with an opening on one side. The bottom of the hoisting frame 11 includes two parallel cross bars 111 and a longitudinal bar 112. The longitudinal bar 112 and the cross bars 111 are both horizontally arranged, and the longitudinal bar 112 is perpendicular to the cross bars 111. The two ends of the longitudinal bar 112 are respectively fixedly connected to the same-side ends of the two cross bars 111. The lateral positioning pipes 141 are respectively installed on the longitudinal bar 112 through the second positioning mechanism 16. The second positioning mechanism 16 includes a threaded sleeve 161 and a second bolt 162. A fourth chute 1121 for the lateral positioning pipe 141 to extend into is formed on the side of the longitudinal bar 112. The lateral positioning pipe 141 can move along the fourth chute 1121. A fifth chute 1122 is formed on the top of the longitudinal bar 112. The threaded sleeve 161 is fixedly arranged on the lateral positioning pipe 141. By screwing the second bolt 162 into the threaded sleeve 161 of the lateral positioning pipe 141 through the fifth chute 1122 of the longitudinal bar 112, the lateral positioning pipe 141 is fixed on the longitudinal bar 112. By connecting the cross bar 111 and the longitudinal bar 112 through the second positioning mechanism 16 with the above structure, not only can the stable connection between the cross bar 111 and the longitudinal bar 112 be achieved, but also the disassembly and assembly are convenient, and the longitudinal movement of the cross bar 111 can be conveniently realized, so as to adjust the two cross bars 111 to the outer tangent plane of the reinforcement cage 4 (i.e., the position tangent to the outside of the reinforcement cage 4), and together with the longitudinal positioning pipe 142, limit the horizontal displacement of the reinforcement cage 4, and assist in the centering construction and verticality control of the reinforcement cage 4.

[0063] Of course, the second positioning mechanism 16 can also adopt other forms. For example, the second positioning mechanism 16 includes a third bolt (not labeled) and a third nut (not labeled). A through hole (not labeled) for the third bolt to pass through is formed on the lateral positioning pipe 141, and a sixth chute (not labeled) is formed on the longitudinal bar 112. The third bolt passes through the through hole on the lateral positioning pipe 141 and the sixth chute of the longitudinal bar 112 in sequence and is fixed by the third nut.

[0064] Preferably, in the above-described method for hoisting the steel cage in sections, the gripper driving mechanism includes a horizontal adjustment mechanism and a vertical adjustment mechanism. The steel cage gripper 23 is disposed on the horizontal adjustment mechanism. Through the horizontal adjustment mechanism, the corresponding steel cage gripper 23 can be driven to move horizontally and longitudinally. Through the longitudinal movement of the steel cage gripper 23, the switching between the clamping state and the releasing state of the steel cage gripper 23 for the steel cage 4 is realized. The vertical adjustment mechanism is disposed on the vehicle frame 21, and through the vertical adjustment mechanism, the corresponding horizontal adjustment mechanism can be driven to move vertically. Since the steel cage gripper 23 is disposed on the horizontal adjustment mechanism, when the vertical adjustment mechanism drives the corresponding horizontal adjustment mechanism to move vertically, the steel cage gripper 23 can move vertically together with the horizontal adjustment mechanism.

[0065] Preferably, in the above-described method for hoisting the steel cage in sections, the horizontal adjustment mechanism includes a hollow tube 241, a second slider 242, a second screw 243, and a fastening nut 244. A long strip-shaped opening groove is formed along the axial direction of the tube wall of the hollow tube 241. The second slider 242 is disposed inside the hollow tube 241. One end of the second screw 243 is fixedly connected to the second slider 242, and the other end of the second screw 243 passes through the long strip-shaped opening groove and is locked by the fastening nut 244. Each steel cage gripper 23 includes a clamping portion 231 for clamping the steel cage 4 and a rotating shaft 232. One end of the rotating shaft 232 is fixedly connected to the clamping portion 231, and a cylindrical stopper is provided at the other end of the rotating shaft 232. An inner cavity for accommodating the cylindrical stopper is formed inside the second slider 242. The cylindrical stopper can rotate around its own axis inside the inner cavity, and the inner cavity can limit the horizontal displacement of the cylindrical stopper. The outer diameter of the through hole is smaller than the outer diameter of the cylindrical stopper to prevent the rotating shaft 232 from detaching from the second slider 242. A through hole for the rotating shaft 232 to pass through is formed on the side wall of the second slider 242 close to the clamping portion 231. A plurality of rollers 245 are arranged between the cylindrical stopper and the inner cavity wall of the second slider 242 to reduce the friction between the cylindrical stopper and the inner cavity wall of the second slider 242 and facilitate the rotation of the rotating shaft 232. Since the other end of the second screw 243 passes through the long strip-shaped opening groove and is locked by the fastening nut 244, and the inner cavity can limit the horizontal displacement of the cylindrical stopper, therefore, by tightening the fastening nut 244, the fixation between the second slider 242 and the hollow tube 241 can be realized, and the fixation of the position of the rotating shaft 232 can also be realized; by loosening the fastening nut 244 and moving the second slider 242, the horizontal displacement of the rotating shaft 232 can be realized, and further the lateral movement of the steel cage gripper 23 can be realized. When the two steel cage grippers 23 are close to each other, the steel cage 4 can be clamped, and when the two steel cage grippers 23 are far away from each other, the steel cage 4 can be released.

[0066] Preferably, the clamping part 231 is in direct contact with the steel reinforcement cage 4. The surface of the clamping part 231 in contact with the steel reinforcement cage 4 is an inward concave arc surface. The inward concave arc surface is treated to increase friction, and a groove is provided in the middle of the inward concave arc surface. The groove matches the longitudinal bars on the steel reinforcement cage 4 to increase the stability of the clamping part 231 in clamping the steel reinforcement cage 4.

[0067] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the vertical adjustment mechanism includes a pair of vertical rods 25 and two scaffolding fasteners 26. The pair of vertical rods 25 are respectively fixed on the vehicle frame 21. The lower ends of the pair of vertical rods 25 are respectively fixed on the vehicle frame 21. The upper ends of the pair of vertical rods 25 are connected by a horizontal rod 30, and this horizontal rod also serves as a handrail. An installation part is provided on the hollow pipe 241, and a positioning rod hole 2412 for the positioning rod 31 to pass through is opened on the installation part. After the two ends of the positioning rod 31 are manually adjusted to the required height, they are respectively fixed on the corresponding vertical rods 25 through the scaffolding fasteners 26. By using the scaffolding fasteners 26, the height of the positioning rod 31 can be conveniently adjusted.

[0068] Preferably, in the above method for hoisting the steel reinforcement cage in sections, the hoisting frame 11 is a square box with an opening on one side. The hoisting frame 11 further includes four support columns 113. A pair of buckles 32 for fixing the relative position between the trolley 2 and the hoisting frame 11 are provided on the vehicle frame 21. The buckles 32 can be buckled on the outer sides of the support columns of the hoisting frame 11. When the buckles 32 are first buckled on the corresponding support columns 113 of the hoisting frame 11, the corresponding horizontal adjustment mechanism can be driven to move vertically through the vertical adjustment mechanism, and the corresponding steel reinforcement cage gripper 23 can be driven to move horizontally through the horizontal adjustment mechanism, so that the axis lines of the pair of steel reinforcement cage grippers 23 are coaxial and perpendicularly intersect with the axis line of the pile hole 3. Therefore, only one adjustment of the position of the pair of steel reinforcement cage grippers 23 is required. Every time the steel reinforcement cage 4 is transported, whenever the buckles 32 are buckled on the outer sides of the support columns 113 of the hoisting frame 11, the axis lines of the pair of steel reinforcement cage grippers 23 are necessarily coaxial and perpendicularly intersect with the axis line of the pile hole 3 when the steel reinforcement cage 4 is in the horizontal state and rotated to the vertical state, so that the steel reinforcement cage 4 can be smoothly hoisted in cooperation with the hook 12, and the steel reinforcement cage 4 is coaxial with the pile hole 3 when the steel reinforcement cage 4 is rotated from the horizontal state to the vertical state. On the premise of ensuring the perpendicularity requirement of the steel reinforcement cage 4 and the centering requirement between the steel reinforcement cage 4 and the pile hole 3, the hoisting efficiency of the steel reinforcement cage 4 disassembled and hoisted is greatly improved, and a large amount of work for adjusting the perpendicularity and centering of the steel reinforcement cage 4 is saved.

[0069] Preferably, the lower part of the vehicle frame 21 is provided with wheel legs 27. The height of the wheel legs 27 is designed to ensure that the trolley 2 does not collide with the steel reinforcement cage 4 already installed in the pile hole 3. The bottom of the wheel legs 27 is provided with universal wheels 28 to facilitate the operation of the trolley. A brake 29 is also provided on the wheel legs 27, which can be used for braking and parking purposes, preventing the trolley 2 from shifting during the hoisting of the steel reinforcement cage 4 and ensuring the centering accuracy and verticality of the steel reinforcement cage 4.

[0070] Preferably, on the opening side of the hoisting frame 11 (i.e., the side where the steel reinforcement cage enters the site) and the side opposite thereto, they are respectively fixed to the ground around the pile hole 3 through anchor cables 17. The hook driving mechanism 13 includes a winch 131, a pulley 132, and a rope 133. Both ends of the rope 133 are respectively connected to the winch 131 and the hook. The rope 133 is deflected by the pulley. The pulley 132 is installed at the top of the hoisting frame 11. When installing the pulley 132, it is ensured that the hook 12 is located above the center of the pile hole 3. The winch 131 is arranged at a position that can take into account the construction of multiple pile holes to reduce displacement and improve construction efficiency.

[0071] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention according to the above disclosure shall fall within the protection scope of the claims.

Claims

1. A method for hoisting a steel reinforcement cage in sections, which is used for hoisting the steel reinforcement cage in sections into a pile hole, and is characterized in that, The method includes the following steps: Step 1: Install a segmented hoisting device for the steel reinforcement cage at the pile hole. The segmented hoisting device for the steel reinforcement cage includes a hoisting frame, a hook, a hook driving mechanism, and a steel reinforcement cage limiting device. The hoisting frame is erected above the pile hole. The steel reinforcement cage limiting device is arranged at the lower part of the hoisting frame. The hook is arranged at the upper part of the hoisting frame. The hook drives the steel reinforcement cage to move up and down under the action of the hook driving mechanism. When the hook is in a natural vertical state, it is located directly above the center of the pile hole. The steel reinforcement cage limiting device can limit and fix the steel reinforcement cage, so that the steel reinforcement cage remains coaxial with the pile hole in a vertical state. The steel reinforcement cage limiting device includes two horizontally arranged transverse positioning pipes, a longitudinal positioning pipe, and a locking rod. One ends of the two transverse positioning pipes are respectively detachably installed on the hoisting frame. The transverse positioning pipes can respectively move longitudinally. The distance between the two transverse positioning pipes can be adjusted. The transverse positioning pipes, the longitudinal positioning pipe, and the locking rod are all horizontally arranged. Two ends of the longitudinal positioning pipe are respectively detachably installed on the corresponding transverse positioning pipes, and the longitudinal positioning pipe is perpendicular to the transverse positioning pipes. The locking rod is parallel to the longitudinal positioning pipe. Two ends of the longitudinal positioning pipe can respectively move horizontally along the axial direction of the corresponding transverse positioning pipe. Two ends of the longitudinal positioning pipe can be fixed on the corresponding transverse positioning pipes. The two transverse positioning pipes and the longitudinal positioning pipe can be adjusted to the positions tangent to the three sides of the steel reinforcement cage when it is coaxial with the pile hole. Two ends of the locking rod are respectively detachably installed on the corresponding transverse positioning pipes. Two ends of the locking rod can respectively move along the axial direction of the corresponding transverse positioning pipe. Two ends of the locking rod can be fixed on the corresponding transverse positioning pipes; Step 2: Horizontally arrange the steel reinforcement cage on a trolley. The trolley includes a frame, a placing plate, a pair of steel reinforcement cage clamps, and a clamp driving mechanism. The pair of steel reinforcement cage clamps are respectively installed on the frame through the clamp driving mechanism. The clamp driving mechanism can drive the corresponding steel reinforcement cage clamp to move horizontally and vertically, and the pair of steel reinforcement cage clamps can respectively rotate freely around their own axis lines. The placing plate is arranged on the frame, and an opening for the steel reinforcement cage to rotate is arranged at one end of the placing plate. The pair of steel reinforcement cage clamps are located at the opening of the placing plate. According to the diameter of the steel reinforcement cage, by adjusting the clamp driving mechanism, the height of the axis line of the steel reinforcement cage clamp is made the same as the axis line of the steel reinforcement cage when it is horizontally arranged on the trolley and the two sides of the steel reinforcement cage are clamped. The two transverse positioning pipes and the longitudinal positioning pipe are adjusted to the positions tangent to the three sides of the steel reinforcement cage when it is coaxial with the pile hole. The position of the locking rod is adjusted so that the vertical plane where the axis line of the locking rod is located passes through the axis line of the pile hole; Step 3: Transport the horizontally arranged steel reinforcement cage to the hoisting predetermined position by the trolley. When the trolley is at the hoisting predetermined position, the vertical plane where the axis line of the steel reinforcement cage clamp is located passes through the axis line of the pile hole; Step 4: Use a lifting hook to hold the end of the steel cage away from the steel cage gripper. During the lifting process, the steel cage rotates with the pair of steel cage grippers as the fulcrum, so that when the steel cage rotates from the horizontal state to the vertical state, the steel cage is coaxial with the pile hole. Step 5: Remove the locking rod, loosen the steel cage gripper, remove the trolley, lower the steel cage, so that the lower end of the steel cage passes through the opening formed by the two horizontal positioning pipes and the vertical positioning pipe. The upper end of the steel cage is higher than the steel cage limiting device. Insert the locking rod back to the position before removal to fix the steel cage. Step 6: Use the trolley to transport the next horizontally arranged steel cage to the predetermined hoisting position. When the trolley is at the predetermined hoisting position, the vertical plane where the axis line of the steel cage gripper is located passes through the axis line of the pile hole, and the straight line where the pair of steel cage grippers is located passes through the axis line of the steel cage when it is in the pile hole. Step 7: Use a lifting hook to hold the end of the next steel cage away from the steel cage gripper. During the lifting process, the next steel cage rotates with the pair of steel cage grippers as the fulcrum, so that when the next steel cage rotates from the horizontal state to the vertical state, the next steel cage is coaxial with the pile hole. Step 8: Remove the locking rod, loosen the steel cage gripper, remove the trolley, lower the next steel cage to the docking position. After the next steel cage is welded and fixed to the previous steel cage, remove the locking rod, loosen the steel cage gripper, remove the trolley, lower the next steel cage, so that the lower end of the next steel cage passes through the opening formed by the two horizontal positioning pipes and the vertical positioning pipe. The upper end of the next steel cage is higher than the steel cage limiting device. Insert the locking rod back to the position before removal to fix the next steel cage. Step 9: Repeat steps 6 to 8 until the construction of all steel cages is completed.

2. The method for hoisting the reinforcement cage in sections as claimed in claim 1, wherein The vertical positioning pipe and the locking rod are respectively detachably installed on the corresponding horizontal positioning pipes through the first positioning mechanism.

3. The method for hoisting the steel reinforcement cage in sections according to claim 2, characterized in that The first positioning mechanism includes a first slider, a first screw rod and a first nut. A first chute for the vertical positioning pipe and the locking rod to extend into is axially opened on the side of the horizontal positioning pipe. A second chute is axially opened on the top of the horizontal positioning pipe. The first slider can move along the first chute. A first through hole for the vertical positioning pipe or the locking rod to pass through is opened on the first slider. One end of the first screw rod is fixedly connected to the first slider, and the other end of the first screw rod passes through the second chute and is fixed to the horizontal positioning pipe through the first nut.

4. The method for hoisting the steel reinforcement cage in sections according to claim 1, characterized in that, The hoisting frame is a square box with an opening on one side. The bottom of the hoisting frame includes two parallel cross bars and a longitudinal bar. The longitudinal bar and the cross bars are both horizontally arranged, and the longitudinal bar is perpendicular to the cross bars. The two ends of the longitudinal bar are respectively fixedly connected to the same side ends of the two cross bars. The horizontal positioning pipes are respectively installed on the longitudinal bar through the second positioning mechanism.

5. The method for hoisting the steel cage in sections according to claim 4, characterized in that, The second positioning mechanism includes a threaded sleeve and a second bolt. A fourth chute for the lateral positioning pipe to extend into is formed in the side of the longitudinal rod. The lateral positioning pipe can move along the fourth chute. A fifth chute is formed in the top of the longitudinal rod. The threaded sleeve is fixedly arranged on the lateral positioning pipe. The lateral positioning pipe is fixed on the longitudinal rod by screwing the second bolt into the threaded sleeve of the lateral positioning pipe through the fifth chute of the longitudinal rod.

6. The method for hoisting the steel reinforcement cage in sections according to claim 1, characterized in that, The gripper driving mechanism includes a horizontal adjustment mechanism and a vertical adjustment mechanism. The steel cage gripper is arranged on the horizontal adjustment mechanism. The corresponding steel cage gripper can be driven by the horizontal adjustment mechanism to move horizontally and longitudinally. The clamping state and the releasing state of the steel cage gripper for the steel cage are switched through the longitudinal movement of the steel cage gripper. The vertical adjustment mechanism is arranged on the vehicle frame, and the corresponding horizontal adjustment mechanism can be driven by the vertical adjustment mechanism to move vertically.

7. The method for hoisting the reinforcement cage in sections according to claim 6, characterized in that, The horizontal adjustment mechanism includes a hollow pipe, a second slider, a second screw rod and a fastening nut. A long strip-shaped opening groove is axially formed in the pipe wall of the hollow pipe. The second slider is arranged in the hollow pipe. One end of the second screw rod is fixedly connected with the second slider, and the other end of the second screw rod passes through the long strip-shaped opening groove and is locked by the fastening nut. Each steel cage gripper includes a clamping part for clamping the steel cage and a rotating shaft. One end of the rotating shaft is fixedly connected with the clamping part, and a cylindrical stopper is arranged at the other end of the rotating shaft. An inner cavity for accommodating the cylindrical stopper is formed in the second slider. The cylindrical stopper can rotate around its own axis in the inner cavity, and the inner cavity can limit the horizontal displacement of the cylindrical stopper. A through hole for the rotating shaft to pass through is formed in the side wall of the second slider close to the clamping part. The outer diameter of the through hole is smaller than the outer diameter of the cylindrical stopper. A plurality of rollers are arranged between the cylindrical stopper and the inner cavity wall of the second slider.

8. The method for hoisting the steel reinforcement cage in sections according to claim 7, characterized in that, The vertical adjustment mechanism includes a pair of vertical rods and two scaffolding fasteners. The pair of vertical rods are respectively fixed on the vehicle frame. An installation part is arranged on the hollow pipe, and a positioning rod hole for the positioning rod to pass through is formed in the installation part. After the two ends of the positioning rod are manually adjusted to the required height, they are respectively fixed on the corresponding vertical rods by the scaffolding fasteners.

9. The method for hoisting the steel reinforcement cage in sections according to claim 7, characterized in that, The hoisting frame is a square box with an opening on one side. The hoisting frame includes four support columns. A pair of buckles for fixing the relative position between the trolley and the hoisting frame are arranged on the vehicle frame. The buckles can be buckled on the outer sides of the support columns of the hoisting frame. When the trolley is pushed to the hoisting predetermined position and the buckles are first buckled on the corresponding support columns of the hoisting frame, the corresponding horizontal adjustment mechanism can be driven by the vertical adjustment mechanism to move vertically, and the corresponding steel cage gripper can be driven by the horizontal adjustment mechanism to move horizontally, so that the axis lines of the pair of steel cage grippers are coaxial and perpendicular to the axis line of the pile hole.

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