Reusable Steel Cage Hoisting Device and Its Usage Method

Abstract

The present invention discloses a reusable steel reinforcement cage hoisting device and its using method. The hoisting device includes a hoisting device main body and a fixing device. The hoisting device main body includes a fixed vertical rod, a lifting ring, a horizontal strengthening ring, a rotating vertical rod, a sleeve, a sleeve card, a hook, an anti-floating rod, a hook indicator, a square chuck and a clamp support piece. The fixing device includes a fixing ring, a square clamp, a lock and a hinge. The hoisting device has a simple structure and is easy to manufacture. The hoisting device can be recycled and reused, which can effectively save the materials used for processing the hoisting device and reduce the time cost of processing the hoisting device. The using method of the hoisting device has little influence on the normal pile foundation construction process, and the method is simple and easy for on-site construction personnel to learn and master.

Description

Technical Field

[0001] The present invention relates to a device for hoisting a steel reinforcement cage and a method for using the same, and particularly to a device for hoisting a steel reinforcement cage that can be recycled and reused and a method for using the same. Background Art

[0002] The restricted construction space in the foundation pit is not conducive to pile foundation construction. At the same time, the cost of transporting pile foundation construction equipment in and out of the foundation pit is relatively high. More importantly, the pile foundation construction in the foundation pit has a greater impact on the disturbance of the foundation pit bottom, which is not conducive to the overall stability of the foundation pit bottom. Therefore, when using the method of open-cut foundation pit for the construction of the main structure of the subway station, it is necessary to complete the pile foundation construction related to the construction of the main structure of the station before the excavation of the open-cut foundation pit, such as uplift piles and temporary column piles. The construction range of the pile foundation related to the construction of the main structure of the station is below the bottom of the open-cut foundation pit, and the depth of the soil to be excavated in the open-cut foundation pit (the depth between the ground surface and the bottom of the foundation pit) does not require the installation of the steel reinforcement cage of the pile foundation and the pouring of concrete. When lowering and installing the steel reinforcement cage of the pile foundation, a hoisting device with the same depth as the soil to be excavated in the open-cut foundation pit is required to connect to the steel reinforcement cage of the pile foundation, install the steel reinforcement cage of the pile foundation at a depth position that meets the requirements below the bottom of the foundation pit, and then pour concrete to the bottom of the foundation pit. Since it is impossible to cut off the connection between the hoisting device and the steel reinforcement cage of the pile foundation near the bottom of the foundation pit, the hoisting device cannot be recycled and reused, resulting in waste of materials and increasing the material cost and the processing cost of the hoisting device. Summary of the Invention

[0003] The purpose of the present invention is to provide a reusable device for hoisting a steel reinforcement cage to solve the above problems. The hoisting device can be recycled and reused, which can effectively save the materials used for processing the hoisting device and reduce the time cost of processing the hoisting device at the same time.

[0004] The present invention mainly realizes the above purpose through the following technical solutions:

[0005] A reusable device for hoisting a steel reinforcement cage, which is mainly characterized in that: it includes a hoisting device main body and a fixing device; the hoisting device main body includes 2 fixed vertical rods symmetrically arranged, a lifting ring is arranged at the upper end of the fixed vertical rod, and a plurality of horizontal reinforcing rings are evenly arranged along the length direction of the fixed vertical rod; 2 rotating vertical rods are symmetrically arranged in the vertical plane perpendicular to the vertical plane where the 2 fixed vertical rods are located, and the rotating vertical rod is connected to the horizontal reinforcing ring through a sleeve; sleeve cards are arranged on the rotating vertical rod near both ends of the sleeve; a hook is arranged at the lower end of the rotating vertical rod, and an anti-floating rod is arranged at the lower end of the sleeve near the hook; a hook indicating mark is arranged at the upper part of the rotating vertical rod; square clamping heads are arranged at the upper parts of the rotating vertical rod and the fixed vertical rod, and a clamping hoop support piece is arranged on the lower side of the square clamping head; the square clamping heads arranged at the upper parts of the rotating vertical rod and the fixed vertical rod should be in the same horizontal plane; the fixing device includes a fixing ring, and 4 square clamping hoops are evenly arranged on the fixing ring, and a locking buckle and a hinge are respectively arranged on both sides of the square clamping hoop.

[0006] Preferably, the length of the hoisting device shall be calculated and determined according to the following formula:

[0007] The length of the hoisting device ≥ the depth of the soil to be excavated in the open cut foundation pit + the distance between the top of the lifting ring of the hoisting device and the bottom of the clamp support piece – the outer diameter of the lifting ring of the pile foundation steel cage – the length of the connecting bar between the lifting ring of the pile foundation steel cage and the pile foundation steel cage – the length of the pile foundation steel cage exceeding the bottom of the foundation pit.

[0008] Preferably, the outer diameter of the horizontal reinforcing ring shall be the same as the outer diameter of the circular reinforcing stirrup of the pile foundation steel cage.

[0009] Preferably, the size, position and angle of the square chuck provided on the upper part of the rotating vertical rod and the fixed vertical rod shall correspond to the square clamp provided on the fixing device.

[0010] Preferably, the hook and the hook indicator shall be arranged on the same side of the rotating vertical rod, so as to confirm whether the hook is located outside or inside the horizontal reinforcing ring after the hoisting device enters the pile hole in the soil layer to be excavated.

[0011] Preferably, the spacing of the horizontal reinforcing rings is 1 to 2 meters.

[0012] Preferably, the length of the anti-floating rod shall be 1.2 to 1.5 times the width of the hook.

[0013] Preferably, the distance between the lower side of the anti-floating rod and the hook head of the hook shall be 1.5 to 2 times the diameter of the lifting ring steel bar provided on the pile foundation steel cage.

[0014] The present invention provides a method for using a reusable steel cage hoisting device, including the following steps:

[0015] S1: When fabricating and processing the pile foundation steel cage according to the design drawings, 4 lifting rings shall be evenly arranged at the upper end of the pile foundation steel cage, and 2 lifting rings in the diameter direction of the circular reinforcing stirrup shall be a group of lifting rings.

[0016] It should be noted that: the radius of the lifting ring provided on the pile foundation steel cage shall be greater than 1.2 times the larger value of the width and height of the hook.

[0017] Furthermore, a hook test piece is fabricated separately. The hook test piece includes a hook, an anti-floating rod and a sleeve. The size and position of the hook, anti-floating rod and sleeve included in the hook test piece shall be the same as the size and position of the hook, anti-floating rod and sleeve provided at the lower end of the rotating vertical rod;

[0018] After the hook test piece is hooked on the lifting ring of the pile foundation steel cage, the upper side of the lifting ring of the pile foundation steel cage is contacted with the lower side of the anti-floating rod, and then the hook is slowly rotated to check whether the hook can be smoothly rotated out; if it cannot be smoothly rotated out, the lifting ring of the pile foundation steel cage should be replaced; during the hook test, the hook test piece shall be kept in a vertical state.

[0019] S2: The lifting equipment moves the pile foundation reinforcement cage to the pile hole through one set of pile foundation reinforcement cage lifting rings, lowers the pile foundation reinforcement cage into the pile hole according to the construction plan, then inserts the hanging beam into the other set of pile foundation reinforcement cage lifting rings, hangs the pile foundation reinforcement cage at the pile hole, and finally disconnects the lifting equipment from the pile foundation reinforcement cage.

[0020] S3: Before installing the fixing device, open the lock on the square clamp, and then check whether the hook and the hook indicator are on the same side of the rotating vertical rod. If they are not on the same side, the hook indicator should be adjusted in time to ensure that the hook and the hook indicator are on the same side of the rotating vertical rod.

[0021] S4: Turn the hook to the outside of the horizontal strengthening ring, and then clamp the square clamp onto the square clamping heads provided on the fixed vertical rod and the rotating vertical rod in sequence.

[0022] S5: After confirming that the hook is outside the horizontal strengthening ring and the square clamp fits the clamp support piece, lock the locks in sequence to fix the position of the hook.

[0023] It should be noted that if it is found that the position of the hook does not meet the requirements, the fixing device should be removed, the position of the hook should be adjusted to meet the requirements, and then the fixing device should be installed again.

[0024] S6: The lifting equipment hoists the hoisting device through the lifting ring provided at the upper end of the fixed vertical rod, slowly moves the hook close to the pile foundation reinforcement cage lifting ring that has not inserted the hanging beam, and hooks the corresponding pile foundation reinforcement cage lifting ring onto the hook.

[0025] S7: After the lifting equipment hoists the pile foundation reinforcement cage through the hoisting device, confirm that the pile foundation reinforcement cage lifting ring is reliably hooked on the hook, then take out the hanging beam, and continue to lower the pile foundation reinforcement cage to the design elevation.

[0026] S8: Insert the hanging beam into the lifting ring provided at the upper end of the fixed vertical rod, hang the hoisting device at the pile hole, and at the same time confirm that the fixing device is above the pile hole. Finally, disconnect the lifting equipment from the hoisting device.

[0027] It should be noted that after determining the position of the hoisting device, if the hanging beam cannot reliably contact the soil around the pile hole, set pads at both ends of the hanging beam, and the length of the pads shall not be less than half of the length of the hanging beam.

[0028] S9: Carry out the construction of pouring pile foundation concrete, and complete the construction of pouring pile foundation concrete according to the design elevation.

[0029] S10: 72 hours after the pouring of pile foundation concrete, the lifting device is hung by the lifting ring provided on the upper end of the fixed vertical rod, and the hanging pole is taken out at the same time; then the lifting device is slowly lowered, and when the lifting device cannot be lowered any further, the locks are opened in turn and the fixing device is removed.

[0030] S11: Use a wrench or other tools to try to tighten the rotating vertical rod, point the hook indicator to the center of the horizontal reinforcement ring, then fasten the square clamp to the square clamp heads on the fixed vertical rod and the rotating vertical rod in turn, and lock the buckles in turn to fix the hook.

[0031] S12: The lifting device slowly lifts the lifting device out of the pile hole, places it in a suitable position, and washes away the mud on the lifting device.

[0032] Then carry out subsequent construction such as extracting the mud in the pile hole and backfilling the pile hole.

[0033] The above description omits the necessary basic techniques, operating procedures, safety measures and quality requirements in the construction process such as preliminary routine construction preparation, drilling and hole cleaning, which are well known to those skilled in the art.

[0034] The present invention has at least the following advantages or beneficial effects:

[0035] The present invention provides a reusable steel cage lifting device and a use method thereof. The lifting device has a simple structure and is easy to manufacture. The lifting device can be recycled and reused, which can effectively save materials used for processing the lifting device and reduce the time cost of processing the lifting device. The use method of the lifting device has little impact on the normal pile foundation construction process, the method is simple, and it is easy for on-site construction personnel to learn and master. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the present invention will be briefly introduced below. It should be understood that the following drawings should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A three-dimensional diagram of the reusable steel cage hoisting device;

[0038] Figure 2 A three-dimensional diagram of a lifting device body of the reusable steel cage lifting device;

[0039] Figure 3 A three-dimensional diagram of a fixing device of the reusable steel cage lifting device;

[0040] Figure 4The present invention is a cross-sectional view of the reusable steel cage lifting device in use.

[0041] Icons: 1- main body of the lifting device; 2- fixing device; 11- fixed vertical rod; 12- lifting ring; 13- horizontal reinforcement ring; 14- rotating vertical rod; 15- casing; 16- casing card; 17- hook; 18- anti-floating rod; 19- hook indicator; 110- square clamp; 111- clamp support; 21- fixing ring; 22- square clamp; 23- locking buckle; 24- hinge; X- hanging pole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed in the invention. It is only for the convenience of describing the present invention and simplifying the description, and does 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 cannot be understood as a limitation on the invention.

[0046] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a welding connection, etc.; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0047] Please refer toFigures 1 to 3 Schematic structural diagram of the reusable steel reinforcement cage hoisting device shown Figure 4 Sectional view of the reusable steel reinforcement cage hoisting device in use. The present invention provides a reusable steel reinforcement cage hoisting device, which is mainly characterized in that it includes a hoisting device main body 1 and a fixing device 2; the hoisting device main body 1 includes 2 symmetrically arranged fixing vertical rods 11, a lifting ring 12 is arranged at the upper end of the fixing vertical rod 11, and a number of horizontal strengthening rings 13 are evenly arranged along the length direction of the fixing vertical rod 11; 2 rotating vertical rods 14 are symmetrically arranged in the vertical plane perpendicular to the vertical plane where the 2 fixing vertical rods 11 are located, and the rotating vertical rod 14 is connected to the horizontal strengthening ring 13 through a sleeve 15; sleeve cards 16 are arranged on the rotating vertical rod 14 near both ends of the sleeve 15; a hook 17 is arranged at the lower end of the rotating vertical rod 14, and an anti-floating rod 18 is arranged at the lower end of the sleeve 15 near the hook 17; a hook indicating mark 19 is arranged on the upper part of the rotating vertical rod 14; square clamping heads 110 are arranged on the upper parts of the rotating vertical rod 14 and the fixing vertical rod 11, and a clamp support piece 111 is arranged on the lower side of the square clamping head 110; the square clamping heads 110 arranged on the upper parts of the rotating vertical rod 14 and the fixing vertical rod 11 should be in the same horizontal plane; the fixing device 2 includes a fixing ring 21, and 4 square clamps 22 are evenly arranged on the fixing ring 21, and a lock catch 23 and a hinge 24 are respectively arranged on both sides of the square clamp 22.

[0048] It should be noted that:

[0049] The length of the hoisting device should be calculated and determined according to the following formula:

[0050] The length of the hoisting device ≥ the depth of the soil to be excavated in the open cut foundation pit + the distance between the top of the lifting ring 12 of the hoisting device and the bottom of the clamp support piece 111 – the outer diameter of the lifting ring of the pile foundation steel reinforcement cage – the length of the connecting bar between the lifting ring of the pile foundation steel reinforcement cage and the steel reinforcement of the pile foundation cage – the length of the pile foundation steel reinforcement cage exceeding the bottom of the foundation pit;

[0051] The outer diameter of the horizontal strengthening ring 13 should be the same as the outer diameter of the circular strengthening stirrup of the pile foundation steel reinforcement cage;

[0052] The size, position and angle of the square clamping heads 110 arranged on the upper parts of the rotating vertical rod 14 and the fixing vertical rod 11 should correspond to the square clamps 22 arranged on the fixing device 2;

[0053] The hook 17 and the hook indicating mark 19 should be arranged on the same side of the rotating vertical rod 14, so as to confirm whether the hook 17 is located outside or inside the horizontal strengthening ring 13 after the hoisting device enters the pile hole in the soil layer to be excavated;

[0054] The spacing of the horizontal strengthening rings 13 is 1 to 2 meters;

[0055] The length of the anti-floating rod 18 should be 1.2 to 1.5 times the width of the hook 17;

[0056] The distance between the lower side of the anti-floating rod 18 and the hook head of the hook 17 should be 1.5 to 2 times the diameter of the lifting ring steel bars provided on the pile foundation steel reinforcement cage.

[0057] The present invention provides a method for using a reusable steel reinforcement cage hoisting device, which includes the following steps:

[0058] S1: When fabricating and processing the pile foundation steel reinforcement cage according to the design drawings, 4 lifting rings should be evenly arranged at the upper end of the pile foundation steel reinforcement cage, and 2 lifting rings in the diameter direction of the circular reinforcement stirrup are a group of lifting rings.

[0059] It should be noted that: the radius of the lifting ring provided on the pile foundation steel reinforcement cage should be greater than 1.2 times the larger value of the width and height of the hook 17.

[0060] Furthermore, a hook test piece is fabricated separately. The hook test piece includes a hook 17, an anti-floating rod 18 and a sleeve 15. The dimensions and positions of the hook 17, the anti-floating rod 18 and the sleeve 15 included in the hook test piece should be the same as those of the hook 17, the anti-floating rod 18 and the sleeve 15 provided at the lower end of the rotating vertical rod 14;

[0061] After the hook test piece is hooked on the lifting ring of the pile foundation steel reinforcement cage, make the upper side of the lifting ring of the pile foundation steel reinforcement cage contact with the lower side of the anti-floating rod 18, and then slowly rotate the hook 17 to check whether the hook 17 can be smoothly rotated out; if it cannot be smoothly rotated out, the lifting ring of the pile foundation steel reinforcement cage should be replaced; during the hook test process, the hook test piece should be kept in a vertical state.

[0062] S2: The hoisting equipment moves the pile foundation steel reinforcement cage to the pile hole through one group of lifting rings of the pile foundation steel reinforcement cage, lowers the pile foundation steel reinforcement cage into the pile hole according to the construction plan, then inserts the hanging shoulder pole X into the other group of lifting rings of the pile foundation steel reinforcement cage, hangs the pile foundation steel reinforcement cage at the pile hole, and finally releases the connection between the hoisting equipment and the pile foundation steel reinforcement cage.

[0063] S3: Before installing the fixing device 2, open the lock 23 provided on the square clamp 22, and then check whether the hook 17 and the hook indicator 19 are on the same side of the rotating vertical rod 14. If they are not on the same side, the hook indicator 19 should be adjusted in time to ensure that the hook 17 and the hook indicator 19 are on the same side of the rotating vertical rod 14.

[0064] S4: Turn the hook 17 to the outside of the horizontal reinforcement ring 13, and then sequentially clamp the square clamp 22 onto the square clamping heads 110 provided on the fixed vertical rod 11 and the rotating vertical rod 14.

[0065] S5: After confirming that the hook 17 is outside the horizontal reinforcement ring 13 and the square clamp 22 fits with the clamp support piece 111, sequentially lock the lock 23 to fix the position of the hook 17.

[0066] It should be noted that: if it is found that the position of the hook 17 does not meet the requirements, the fixing device 2 should be removed, and the position of the hook 17 should be adjusted to meet the requirements before the fixing device 2 is installed.

[0067] S6: The lifting equipment lifts the lifting device through the lifting ring 12 set at the upper end of the fixed vertical rod 11, and slowly moves the hook close to the pile foundation steel cage lifting ring that is not inserted into the hanging pole X, and hooks the corresponding pile foundation steel cage lifting ring on the hook 17.

[0068] S7: After the hoisting equipment lifts the pile foundation reinforcement cage through the hoisting device, it is confirmed that the pile foundation reinforcement cage lifting ring is reliably hooked on the hook 17, and then the lifting pole X is taken out, and the pile foundation reinforcement cage is continued to be lowered to the designed elevation.

[0069] S8: Insert the hanging pole X into the lifting ring 12 provided at the upper end of the fixed vertical rod 11, hang the lifting device at the pile hole, and at the same time confirm that the fixing device 2 is located above the pile hole, and finally release the connection between the lifting equipment and the lifting device.

[0070] It should be noted that: after determining the position of the lifting device, if the hanging pole X cannot reliably contact the soil around the pile hole, cushion blocks are set at both ends of the hanging pole X, and the length of the cushion blocks is not less than half the length of the hanging pole X.

[0071] S9: Carry out the pile foundation concrete pouring construction and complete the pile foundation concrete pouring construction according to the designed elevation.

[0072] S10: 72 hours after the pouring of the pile foundation concrete, the lifting device is hung by the lifting ring 12 provided on the upper end of the fixed vertical rod 11, and the hanging pole X is taken out at the same time; then the lifting device is slowly lowered, and when the lifting device cannot be lowered any further, the lock buckles 23 are opened in sequence and the fixing device 2 is removed.

[0073] S11: Use a wrench or other tools to try to screw the rotating vertical rod 14, point the hook indicator 19 to the center of the horizontal reinforcement ring 13, then clamp the square clamp 22 to the square clamp head 110 provided on the fixed vertical rod 11 and the rotating vertical rod 14 in turn, and lock the lock 23 in turn to fix the hook 17.

[0074] S12: The lifting device slowly lifts the lifting device out of the pile hole, places it in a suitable position, and washes away the mud on the lifting device.

[0075] Then carry out subsequent construction such as extracting the mud in the pile hole and backfilling the pile hole.

[0076] The above description omits the necessary basic techniques, operating procedures, safety measures and quality requirements in the construction process such as preliminary routine construction preparation, drilling and hole cleaning, which are well known to those skilled in the art.

[0077] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Reusable steel cage hoisting device, The main features are as follows: It includes a hoisting device main body (1) and a fixing device (2); the hoisting device main body (1) includes 2 symmetrically arranged fixing vertical rods (11), a lifting ring (12) is arranged at the upper end of the fixing vertical rod (11), and several horizontal strengthening rings (13) are evenly arranged along the length direction of the fixing vertical rod (11); 2 rotating vertical rods (14) are symmetrically arranged in a vertical plane perpendicular to the vertical plane where the 2 fixing vertical rods (11) are located, and the rotating vertical rod (14) is connected to the horizontal strengthening ring (13) through a sleeve (15); sleeve cards (16) are arranged on the rotating vertical rod (14) near both ends of the sleeve (15); a hook (17) is arranged at the lower end of the rotating vertical rod (14), and an anti-floating rod (18) is arranged at the lower end of the sleeve (15) near the hook (17); a hook indicator (19) is arranged at the upper part of the rotating vertical rod (14); square chucks (110) are arranged at the upper parts of the rotating vertical rod (14) and the fixing vertical rod (11), and a clamp support piece (111) is arranged on the lower side of the square chuck (110); the square chucks (110) arranged at the upper parts of the rotating vertical rod (14) and the fixing vertical rod (11) should be in the same horizontal plane; the fixing device (2) includes a fixing ring (21), 4 square clamps (22) are evenly arranged on the fixing ring (21), and a lock catch (23) and a hinge (24) are respectively arranged on both sides of the square clamp (22).

2. The reusable steel cage hoisting device according to claim 1, characterized in that: The length of the hoisting device should be calculated and determined according to the following formula: The length of the hoisting device ≥ the depth of the soil to be excavated in the open cut foundation pit + the distance between the top of the lifting ring (12) of the hoisting device and the bottom of the clamp support piece (111) – the outer diameter of the lifting ring of the pile foundation steel cage – the length of the connecting bar between the lifting ring of the pile foundation steel cage and the pile foundation steel cage – the length of the pile foundation steel cage exceeding the bottom of the foundation pit.

3. The reusable steel cage hoisting device according to claim 1, characterized in that: The outer diameter of the horizontal strengthening ring (13) should be the same as the outer diameter of the circular strengthening stirrup of the pile foundation steel cage.

4. The reusable steel cage hoisting device according to claim 1, characterized in that: The size, position and angle of the square chuck (110) arranged at the upper parts of the rotating vertical rod (14) and the fixing vertical rod (11) should correspond to the square clamp (22) arranged on the fixing device (2).

5. The reusable steel cage hoisting device according to claim 1, characterized in that: The hook (17) and the hook indicator (19) should be arranged on the same side of the rotating vertical rod (14).

6. The reusable steel cage hoisting device according to claim 1, characterized in that: The spacing of the horizontal strengthening rings (13) is 1 - 2 meters.

7. The reusable steel cage hoisting device according to claim 1, characterized in that: The length of the anti-floating rod (18) should be 1.2 - 1.5 times the width of the hook (17).

8. The reusable steel cage hoisting device according to claim 1, characterized in that: The distance between the lower side of the anti-floating rod (18) and the hook head of the hook (17) should be 1.5 to 2 times the diameter of the lifting ring steel bar set on the pile foundation steel reinforcement cage.

9. The method for using the reusable steel reinforcement cage hoisting device according to any one of claims 1-8, characterized in that: it includes the following steps: S1: When fabricating and processing the pile foundation steel reinforcement cage according to the design drawings, 4 lifting rings should be evenly arranged at the upper end of the pile foundation steel reinforcement cage. The 2 lifting rings in the diameter direction of the circular reinforcing stirrup are a set of lifting rings. The radius of the lifting rings set on the pile foundation steel reinforcement cage should be greater than 1.2 times the larger value of the width and height of the hook (17); Separate the hook test piece is fabricated. The hook test piece includes a hook (17), an anti-floating rod (18) and a sleeve (15). The dimensions and positions of the hook (17), anti-floating rod (18) and sleeve (15) included in the hook test piece should be the same as the dimensions and positions of the hook (17), anti-floating rod (18) and sleeve (15) provided at the lower end of the rotating vertical rod (14); After the hook test piece is hooked on the lifting ring of the pile foundation steel reinforcement cage, make the upper side of the lifting ring of the pile foundation steel reinforcement cage contact with the lower side of the anti-floating rod (18), and then slowly rotate the hook (17) to check whether the hook (17) can be smoothly rotated out; if it cannot be smoothly rotated out, the lifting ring of the pile foundation steel reinforcement cage should be replaced; during the hook test, the hook test piece should be kept in a vertical state; S2: The lifting equipment moves the pile foundation steel reinforcement cage to the pile hole through one set of lifting rings of the pile foundation steel reinforcement cage, lowers the pile foundation steel reinforcement cage into the pile hole according to the construction plan, then inserts the hanging beam (X) into the other set of lifting rings of the pile foundation steel reinforcement cage, hangs the pile foundation steel reinforcement cage at the pile hole, and finally disconnects the connection between the lifting equipment and the pile foundation steel reinforcement cage; S3: Before installing the fixing device (2), open the lock (23) provided on the square clamp (22), and then check whether the hook (17) and the hook indicator (19) are on the same side of the rotating vertical rod (14). If they are not on the same side, the hook indicator (19) should be adjusted in time to ensure that the hook (17) and the hook indicator (19) are on the same side of the rotating vertical rod (14); S4: Turn the hook (17) to the outside of the horizontal strengthening ring (13), and then sequentially clamp the square clamp (22) onto the square clamping heads (110) provided on the fixed vertical rod (11) and the rotating vertical rod (14); S5: After confirming that the hook (17) is outside the horizontal strengthening ring (13) and the square clamp (22) fits with the clamp support piece (111), sequentially lock the lock (23) to fix the position of the hook (17); S6: The lifting equipment hoists the hoisting device through the lifting ring (12) provided at the upper end of the fixed vertical rod (11), and slowly moves the hook close to the lifting ring of the pile foundation steel reinforcement cage that has not inserted the hanging beam (X), and hooks the corresponding lifting ring of the pile foundation steel reinforcement cage on the hook (17); S7: After the lifting equipment hoists the pile foundation steel reinforcement cage through the hoisting device, confirm that the lifting ring of the pile foundation steel reinforcement cage is reliably hooked on the hook (17), then take out the hanging beam (X), and continue to lower the pile foundation steel reinforcement cage to the design elevation; S8: inserting the hanging pole (X) into the lifting ring (12) provided at the upper end of the fixed vertical rod (11), hanging the lifting device at the pile hole, and confirming that the fixing device (2) is located above the pile hole, and finally releasing the connection between the lifting equipment and the lifting device; S9: Carry out the concrete pouring construction of pile foundation. According to the designed elevation, complete the concrete pouring construction of pile foundation; S10: 72 hours after the pouring of the pile foundation concrete, the lifting device is hung by the lifting ring (12) provided at the upper end of the fixed vertical rod (11), and the hanging shoulder pole (X) is taken out at the same time; then the lifting device is slowly lowered, and when the lifting device cannot be lowered any further, the lock buckles (23) are opened in sequence, and the fixing device (2) is removed; S11: Using a wrench or other tool, try to rotate the rotating vertical rod (14), point the hook indicator (19) to the center of the horizontal reinforcing ring (13), and then successively clamp the square clamp (22) to the square clamp head (110) provided on the fixed vertical rod (11) and the rotating vertical rod (14), and then successively lock the lock (23) to fix the hook (17); S12: The lifting device slowly lifts the lifting device out of the pile hole, places it in a suitable position, and washes away the mud on the lifting device.

10. A method for using the reusable steel cage hoisting device according to claim 9, Features: In S5, if it is found that the position of the hook (17) does not meet the requirements, the fixing device (2) should be removed, and the position of the hook (17) should be adjusted to meet the requirements before the fixing device (2) is installed again.

11. A method for using the reusable steel cage hoisting device according to claim 9, Features: In S8, after the position of the lifting device is determined, if the hanging pole (X) cannot reliably contact the soil around the pile hole, cushion blocks are set at both ends of the hanging pole (X), and the length of the cushion blocks is not less than half the length of the hanging pole (X).

Images