A steel cage hoisting device and hoisting method thereof

Abstract

The present invention relates to the technical field of steel cage hoisting, and discloses a steel cage hoisting device and a hoisting method thereof, comprising a crane, the crane comprising a hoisting arm, the hoisting arm is connected with a wire rope through a pulley block arranged at its output end, the wire rope is sequentially connected with a main hook and an auxiliary hook assembly through the pulley block; wherein the auxiliary hook assembly comprises a connecting rod, one end of which is connected to the outer end of the wire rope. The steel cage hoisting device and the hoisting method thereof can effectively solve the problem that due to the long steel cage, the main hook and the auxiliary hook need to be used simultaneously to cooperate with each other during hoisting in the prior art. After the main hook hoists the steel cage vertically, the auxiliary hook is separated from the steel cage, and the auxiliary hook is raised upward by controlling the crane. During the lifting process of the auxiliary hook, the hook mouth of the auxiliary hook is exposed, and may accidentally hang on other parts of the steel cage as it rises, causing the steel cage to be skewed, resulting in a high risk of accidents.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar cage hoisting, and in particular to a steel bar cage hoisting device and a hoisting method thereof. Background Art

[0002] Rebar cage installation is a common operation in construction projects. It refers to the use of a crane to lift the pre-tied steel structure (rebar cage) and place it in a pile hole or tunnel that has been dug. This process is usually carried out in projects such as bridge construction, high-rise buildings, underground projects, etc. that require a large amount of concrete and steel structure support.

[0003] In the prior art, since the steel cage is relatively long, it is necessary to use both the main hook and the auxiliary hook to cooperate with each other during hoisting. After the main hook hoists the steel cage vertically, the auxiliary hook is separated from the steel cage and the auxiliary hook is raised upward by controlling the crane. During the rising process of the auxiliary hook, the hook mouth of the auxiliary hook is exposed. As it rises, it may accidentally get caught on other parts of the steel cage, causing the steel cage to tilt, increasing the risk of accidents. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a steel cage hoisting device and a hoisting method thereof, which can effectively solve the problem in the prior art that due to the long steel cage, it is necessary to use two hooks, a main hook and an auxiliary hook, to cooperate with each other during hoisting. After the main hook hoists the steel cage vertically, the auxiliary hook is separated from the steel cage, and the auxiliary hook is raised upward by controlling the crane. During the rising process of the auxiliary hook, the hook mouth of the auxiliary hook is exposed to the outside, and as it rises, it may accidentally get caught on other parts of the steel cage, causing the steel cage to tilt, resulting in a high risk of accidents.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a steel cage hoisting device and a hoisting method thereof, comprising:

[0009] A crane, the crane comprising a hoisting arm, the inside of the hoisting arm is connected with a steel wire rope through a pulley block arranged at the output end thereof, and the steel wire rope is sequentially connected with a main hook and an auxiliary hook assembly through the pulley block;

[0010] Among them, the auxiliary hook assembly includes a connecting rod, one end of the connecting rod is connected to the outer end of the wire rope, and the other end of the connecting rod is fixedly connected to the auxiliary hook. A counterweight block is arranged outside the circumference of the auxiliary hook. The counterweight block adopts a hollow cylindrical design. A traction rope is arranged on the upper surface of the counterweight block. One end of the traction rope away from the counterweight block is fixedly connected to the inside of the connecting rod. There are multiple traction ropes and they are distributed in a circular array with the connecting rod as the axis.

[0011] Furthermore, the auxiliary hook is rotatably connected to an L-shaped rod via a rotating shaft arranged inside the auxiliary hook, and two L-shaped rods are provided and symmetrically distributed with the auxiliary hook as the center.

[0012] Furthermore, one end of the L-shaped rod close to the lifting arm is rotatably connected to the support rod via an axle rod arranged inside it, the auxiliary hook is provided with a fixed shaft via a through groove opened inside it, and one end of the support rod away from the rotating shaft is rotatably connected to the fixed shaft.

[0013] Furthermore, one end of the pair of L-shaped rods away from the lifting arm is fixedly connected to a supporting plate, the lower surface of the counterweight block is in contact with the upper surface of the supporting plate, and a limiting component that can be used to fix the counterweight block is provided on one side of the auxiliary hook.

[0014] Furthermore, the limiting assembly includes a fixed seat, and a sliding block is slidably connected to the inside of the fixed seat through a sliding groove, and a side of the sliding block away from the fixed seat adopts a curved surface design.

[0015] Furthermore, a baffle is fixedly connected to a side of the fixing seat away from the auxiliary hook, and a spring that fits with an outer surface of the sliding block is provided on a side of the baffle away from the supporting plate.

[0016] Furthermore, telescopic columns are arranged on both sides of the crane, and two groups of telescopic columns are arranged and symmetrically distributed with the crane as the center, and the output ends of the telescopic columns are rotatably connected to support legs.

[0017] A steel cage hoisting device and a hoisting method thereof, comprising the following steps:

[0018] S1: The lifting arm is unfolded, and the main hook and auxiliary hook assembly at the lower end of the pulley block are lowered by using a steel wire rope, and the main hook and auxiliary hook assembly are fixedly engaged with the lifting point of the steel cage;

[0019] S2: Control the hoisting arm to lift the main hook and the auxiliary hook assembly at the same time, and the steel cage is hoisted and lifted horizontally. When the steel cage is lifted to the specified distance, the auxiliary hook assembly remains stable and the main hook continues to lift upward;

[0020] S3: After the steel cage is completely vertically hoisted, the auxiliary hook assembly is in a tilted state, the auxiliary hook is higher than the connecting rod, the counterweight block tilts and slides, driving the L-shaped rod and the supporting plate to tilt and rotate, so that the hook mouth of the auxiliary hook is in an open state;

[0021] S4: The main hook is stable and motionless, the wire rope at the auxiliary hook assembly is lifted upward, the connecting rod is higher than the auxiliary hook, the counterweight is limited by the limit assembly, the hook mouth of the auxiliary hook is still in the open state, and the steel cage at the auxiliary hook automatically falls off from the hook mouth during this process;

[0022] S5: After the steel cage at the auxiliary hook automatically falls off, the auxiliary hook rises and returns to its initial position under the cover of the counterweight block, and the main hook stably moves the steel cage to the excavated pile hole and lowers it.

[0023] Beneficial Effects

[0024] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0025] The present invention is provided with a counterweight, a traction rope and an auxiliary hook. After the steel cage is hoisted to be completely vertical, the auxiliary hook falls off from the surface of the steel cage, and the auxiliary hook is lifted upward to restore to the initial state. Since the counterweight adopts a hollow cylindrical design, under the traction of the traction rope, the counterweight can cover the auxiliary hook, so that the hook mouth of the auxiliary hook is always in the counterweight in the vertical state and cannot directly contact the outside, which can prevent the auxiliary hook from accidentally hanging on other parts of the steel cage during the recovery and rising process, thereby reducing the risk of accidents. When the lifting arm hoists the steel cage to be vertical to the ground, the steel wire rope at the auxiliary hook is in a loose state, and the auxiliary hook is higher than the connecting rod. At this time, the L-shaped rod can be squeezed by the self-gravity of the counterweight, so that the hook mouth of the auxiliary hook is opened. When the steel wire rope at the auxiliary hook is tightened and the auxiliary hook is slightly lower than the connecting rod, the counterweight is limited by the limit block, and the steel bar automatically falls off from the hook mouth of the auxiliary hook. Automatic unhooking can reduce the pause time during the hoisting process, making the hoisting operation smoother, thereby improving construction efficiency and reducing the direct participation of workers in high-risk operations. When the connecting rod in the auxiliary hook assembly is higher than the auxiliary hook, under the action of the weight of the counterweight block itself, the lower surface of the counterweight block abuts against the upper surface of the support plate, driving the L-shaped rod at the hook mouth of the auxiliary hook to squeeze inward, so that the steel bars at the lifting point are always inside the auxiliary hook, preventing accidental falling off during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A flow chart of a hoisting method of a steel cage hoisting device according to an embodiment of the present invention;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the transition of the hoisting state of the steel cage according to an embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting rod, the traction rope and the counterweight block according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the separation structure of the auxiliary hook assembly according to an embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of the auxiliary hook assembly from another angle according to an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the limit assembly according to an embodiment of the present invention;

[0034] Figure 8 For the embodiment of the present invention Figure 1 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0035] The numbers in the figure represent: 1. crane; 11. lifting arm; 12. wire rope; 13. main hook; 14. telescopic column; 141. support leg; 2. auxiliary hook assembly; 21. connecting rod; 22. auxiliary hook; 221. counterweight; 222. traction rope; 23. L-shaped rod; 231. supporting plate; 24. support rod; 25. fixed shaft; 26. limit assembly; 261. fixed seat; 262. slide groove; 263. sliding block; 264. baffle; 265. spring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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 protection of the present invention.

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] Example:

[0039] See also Figure 2-Figure 8The present invention provides a technical solution: a steel cage hoisting device and a hoisting method thereof, comprising:

[0040] Crane 1, crane 1 includes a lifting arm 11, the inside of the lifting arm 11 is connected with a wire rope 12 through a pulley block arranged at its output end, and the wire rope 12 is connected with a main hook 13 and an auxiliary hook assembly 2 in sequence through the pulley block; the main hook 13 and the auxiliary hook assembly 2 cooperate together to lift a steel cage with a certain length.

[0041] Among them, the auxiliary hook assembly 2 includes a connecting rod 21, one end of the connecting rod 21 is connected to the outer end of the wire rope 12, and the other end of the connecting rod 21 is fixedly connected to the auxiliary hook 22. A counterweight block 221 is arranged outside the circumference of the auxiliary hook 22. The counterweight block 221 adopts a hollow cylindrical design, and a traction rope 222 is arranged on the upper surface of the counterweight block 221. The end of the traction rope 222 away from the counterweight block 221 is fixedly connected to the inside of the connecting rod 21. A plurality of traction ropes 222 are arranged and distributed in a circular array with the connecting rod 21 as the axis.

[0042] The auxiliary hook 22 is rotatably connected to an L-shaped rod 23 via a rotating shaft disposed inside the auxiliary hook 22. Two L-shaped rods 23 are disposed and are symmetrically distributed with the auxiliary hook 22 as the center. The L-shaped rods 23 symmetrically distributed with the auxiliary hook 22 as the center increase the stability of the structure.

[0043] The end of the L-shaped rod 23 close to the lifting arm 11 is rotatably connected to the support rod 24 through an axle rod arranged inside it. The auxiliary hook 22 is provided with a fixed shaft 25 through a through groove opened inside it. The end of the support rod 24 away from the rotating shaft is rotatably connected to the fixed shaft 25. The counterweight block 221 can squeeze the support rod 24 to rotate to a certain angle when the connecting rod 21 is tilted, so that the hook mouth of the auxiliary hook 22 is in an open state.

[0044] One end of a pair of L-shaped rods 23 away from the lifting arm 11 is fixedly connected to a supporting plate 231 , the lower surface of the counterweight block 221 is in contact with the upper surface of the supporting plate 231 , and a limiting component 26 for fixing the counterweight block 221 is provided on one side of the auxiliary hook 22 .

[0045] The limiting assembly 26 includes a fixed seat 261, and a sliding block 263 is slidably connected to the fixed seat 261 through a sliding groove 262. The side of the sliding block 263 away from the fixed seat 261 adopts a curved surface design, which is conducive to the smooth sliding of the counterweight block 221 in a tilted state.

[0046] A baffle 264 is fixedly connected to a side of the fixing seat 261 away from the auxiliary hook 22 , and a spring 265 that fits with the outer surface of the sliding block 263 is disposed on a side of the baffle 264 away from the supporting plate 231 .

[0047] Telescopic columns 14 are arranged on both sides of the crane 1. Two groups of telescopic columns 14 are arranged and symmetrically distributed with the crane 1 as the center. The output ends of the telescopic columns 14 are rotatably connected to support legs 141, and the state of the support legs 141 can be adjusted according to actual needs.

[0048] Fixing the steel cage lifting point process:

[0049] In actual application, an external tamping machine is used to compact the ground, and the crane 1 is driven to one end of the steel cage so that the steel cage is perpendicular to the front of the crane 1 as a whole, and the lifting arm 11 is on the same horizontal plane as the steel cage. The support leg 141 is designed to be rotatable. In the initial state, the support leg 141 is in a retracted state and parallel to the body of the crane 1 (to avoid damage caused by friction and collision between the support leg 141 and the ground when the crane 1 is driving on a bumpy ground). Before operating the crane 1, the telescopic column 14 is unfolded, and the support leg 141 is rotated ninety degrees so that the support seat under the support leg 141 is parallel to the ground. According to actual needs, wooden sleepers are placed under the support seat, and the retracted support leg 141 is unfolded to support the crane 1, thereby improving the stability during the lifting process.

[0050] After the operator inside the crane 1 unfolds the lifting arm 11, the main hook 13 and the auxiliary hook assembly 2 at the lower end of the pulley block are lowered using the wire rope 12. The staff places an external lifting belt on the main hook 13, and fixes and engages the two ends of the lifting belt with the lifting points of the steel cage, and places the auxiliary hook assembly 2 at the corresponding lifting point at the other end of the steel cage. The auxiliary hook assembly 2 is manually stabilized so that the counterweight 221 is on the upper surface of the circumference of the hanging point, and the height of the counterweight 221 is less than the distance between the supporting plate 231 and the support rod 24, and the wire rope 12 at the auxiliary hook assembly 2 is continued to be lowered. At this time, the counterweight 221 is stabilized on the upper surface of the steel cage, and the auxiliary hook 22 continues to fall. Since one end of the support rod 24 is fixedly connected to the auxiliary hook 22, the support rod 24 drops accordingly, and the lower surface of the support rod 24 will contact the upper surface of the counterweight 221. The support rod 24 will rotate counterclockwise with the downward movement of the auxiliary hook 22. The support rod 24 and the L-shaped rod 23 are rotatably connected by the shaft rod. The L-shaped rod 23 will be affected by the rotation of the support rod 24, and with the rotation axis as the axis, it will also rotate counterclockwise at a certain angle, so that the lower end of the L-shaped rod 23 will be separated from the opening of the auxiliary hook 22, and a slight thrust is manually given to the connecting rod 21, so that the auxiliary hook 22 is engaged with the steel bars at the hanging point of the steel cage.

[0051] The hoisting process of the steel cage:

[0052] After the auxiliary hook 22 and the main hook 13 are hoisted and fixed, the hoisting arm 11 is controlled to lift. When the wire rope 12 above the auxiliary hook assembly 2 is tightened, the traction rope 222 is also in a taut state as the connecting rod 21 rises. Since the counterweight block 221 has a certain weight, in a vertical state, the lower surface of the counterweight block 221 is in contact with the upper surface of the supporting plate 231. The supporting plate 231 is squeezed downward under the influence of the counterweight block 221, driving the L-shaped rod 23 to rotate clockwise and return to its initial state. At this time, the L-shaped rod 23 and the counterweight block 221 clamp the steel bars at the lifting point of the steel cage at point X inside the auxiliary hook 22 for fixation, and the main weight of the steel cage at the lifting point of the auxiliary hook 22 is at point X.

[0053] The lifting arm 11 raises the main hook 13 and the auxiliary hook assembly 2 synchronously, and the steel cage is hoisted horizontally. After a certain height from the ground (this height ensures that after one end of the main hook 13 of the steel cage is lifted, the bottom of the steel cage avoids collision with the ground), the wire rope 12 at the auxiliary hook assembly 2 stops running, and the wire rope 12 at the main hook 13 continues to rise. At this time, the steel cage is in an inclined state as a whole; the wire rope 12 at the main hook 13 continues to rise until the steel cage is in a state completely vertical to the ground, and the wire rope 12 at the main hook 13 continues to rise for a short distance. At the same time, since the wire rope 12 at the auxiliary hook assembly 2 has been in a stationary state, the auxiliary hook 22 is now actively suspended on the external steel bars, and the Y point at the auxiliary hook 22 is in contact with the steel bars, while the wire rope 12 outside the connecting rod 21 is in a loose state. Since the connecting rod 21 is made of hard material, under the action of the connecting rod 21, the auxiliary hook assembly 2 is now in an inclined state where the auxiliary hook 22 is higher than the connecting rod 21.

[0054] The counterweight 221 has a certain weight, which can ensure the stability of the auxiliary hook 22. When the auxiliary hook assembly 2 is in an inclined state, the counterweight 221 is affected by its own gravity and slides in a direction away from the auxiliary hook 22. The side of the counterweight 221 close to the traction rope 222 slides to abut against the support rod 24. Under the gravity of the counterweight 221, the support rod 24 is squeezed, and the support rod 24 is squeezed to rotate counterclockwise around the fixed shaft 25 as the axis. The support rod 24 is connected to the L-shaped rod 23 by the shaft rod. The L-shaped rod 23 rotates counterclockwise around the rotation axis as the support rod 24 rotates. Under the traction of the traction rope 222, the counterweight 221 slides a certain distance toward the connecting rod 21 and stops sliding. Since the traction rope 222 is made of flexible material, when the auxiliary hook assembly 2 is vertical to the ground, the traction rope 222 can stretch the counterweight 221 outside the circumference of the auxiliary hook 22; and when the auxiliary hook assembly 2 is in an inclined state, since the traction rope 222 is made of flexible material, the counterweight 221 is affected by gravity, and the inner wall of the counterweight 221 away from the ground will fit toward the auxiliary hook 22.

[0055] The counterweight 221 slides to the bottom under the action of the traction rope 222. During the sliding process, the inner wall of the counterweight 221 fits with the upper surface of the sliding block 263. Since the upper surface of the sliding block 263 away from the fixed seat 261 adopts an arc design, the friction is reduced so that the counterweight 221 slides smoothly. During the tilting process of the counterweight 221, its inner wall fits with the support rod 24. The counterweight 221 slides as a whole to the side of the fixed seat 261 away from the supporting plate 231, and the lower surface of the counterweight 221 is engaged with the groove at the connection between the fixed seat 261 and the sliding block 263. The upper end of the support rod 24 and the L-shaped rod 23 close to the connecting rod 21 are squeezed, and the end of the L-shaped rod 23 away from the connecting rod 21 is tilted under the action of the lever, so that the opening of the auxiliary hook 22 is in an open state, and the auxiliary hook 22 is exposed on the outer surface of the counterweight 221.

[0056] At this time, the steel wire rope 12 connected to the main hook 13 stops running, and the steel wire rope 12 connected to the auxiliary hook assembly 2 begins to pull the auxiliary hook assembly 2 upward, and the auxiliary hook assembly 2 as a whole changes from the inclined state where the auxiliary hook 22 is higher than the connecting rod 21 to the state where the connecting rod 21 is parallel to the ground. At this time, the connection point between the auxiliary hook 22 and the steel bar changes from point Y to the hook tip.

[0057] The steel wire rope 12 connected to the auxiliary hook assembly 2 continues to be pulled upward. At this time, the connecting rod 21 is higher than the auxiliary hook 22, and the auxiliary hook assembly 2 is in a downward tilted state. Since the counterweight block 221 is limited by the fixed seat 261 and the sliding block 263, it cannot slide toward the auxiliary hook 22 by its own weight, and the L-shaped rod 23 is still affected by the counterweight block 221, and the end close to the auxiliary hook 22 is in a tilted state. There is no restriction on the opening of the auxiliary hook 22. At this time, the connection point between the auxiliary hook 22 and the steel bar changes from X to move toward the hook tip until the steel bar is separated from the auxiliary hook 22.

[0058] After the auxiliary hook 22 is separated from the steel cage, the auxiliary hook assembly 2 as a whole swings outward rapidly under the tension of the wire rope 12. After the swing is restored, the limit assembly 26 is in a vertical state, and the lower surface of the counterweight block 221 abuts against the groove where the fixed seat 261 and the sliding block 263 are connected. Since the counterweight block 221 has a certain weight, under the action of gravity, the spring 265 between the sliding block 263 and the baffle 264 is compressed, and the slot at the bottom of the sliding block 263 moves in the sliding slot 262, and the sliding block 263 slides to the side of the baffle 264. At this time, the highest point of the upper surface of the sliding block 263 is lower than the lowest point of the groove of the fixed seat 261. As the auxiliary hook assembly 2 swings as a whole, the counterweight block 221 swings relative to the connecting rod 21 under the action of the traction rope 222 and separates from the limit assembly 26. When the auxiliary hook assembly 2 tends to be stable as a whole, the counterweight block 221 is stably placed outside the circumference of the connecting rod 21 and the auxiliary hook 22 under the traction of the traction rope 222.

[0059] After the auxiliary hook assembly 2 is in a vertical state, the counterweight 221 falls downward under the influence of gravity. Under the traction of the traction rope 222, the lower surface of the counterweight 221 fits with the upper surface of the supporting plate 231. The counterweight 221 covers the circumferential surface of the auxiliary hook 22, and the hook tip of the auxiliary hook 22 is hidden inside the counterweight 221. The wire rope 12 at the main hook 13 remains stationary, and the wire rope 12 at the auxiliary hook assembly 2 is lifted. Since the counterweight 221 adopts a hollow cylindrical design, the auxiliary hook 22 is hidden inside it. When the auxiliary hook 22 is lifted, the hook tip of the auxiliary hook 22 is prevented from being hooked with other steel bars on the outer surface of the steel cage during the rising process, so that the auxiliary hook 22 is smoothly lifted to the initial position.

[0060] The steel wire rope 12 at the main hook 13 remains stationary, and the lifting arm 11 is slowly moved to move the vertically suspended steel cage to the excavated pile hole and place it. After the steel cage is stable, the steel wire rope 12 is driven to slowly lower the main hook 13, so that the steel cage slowly descends into the pile hole. After the overall placement of the steel cage is completed, the external lifting belt of the main hook 13 at the lifting point of the steel cage is manually disassembled, and the lifting of the steel cage is completed.

[0061] In summary, the steel cage hoisting process has the following advantages:

[0062] Advantage 1: When the hoisting arm 11 hoists the steel cage to be vertical to the ground, the steel wire rope 12 at the auxiliary hook 22 is in a loose state, and the auxiliary hook 22 is higher than the connecting rod 21. At this time, the L-shaped rod 23 can be squeezed by the gravity of the counterweight block 221 to open the hook mouth of the auxiliary hook 22. When the steel wire rope 12 at the auxiliary hook 22 is tightened and the auxiliary hook 22 is slightly lower than the connecting rod 21, the counterweight block 221 is limited by the limit block 223, and the steel bar automatically falls off from the hook mouth of the auxiliary hook 22. Automatic unhooking can reduce the pause time during the hoisting process, making the hoisting operation smoother, thereby improving construction efficiency, and reducing the direct participation of workers in high-risk operations.

[0063] Advantage 2: After the steel cage is completely vertical, the auxiliary hook 22 automatically falls off from the surface of the steel cage, and at the same time the auxiliary hook 22 is lifted up and restored to its initial state. Since the counterweight block 221 adopts a hollow cylindrical design, the auxiliary hook 22 can be covered, so that the hook mouth of the auxiliary hook 22 is always in the counterweight block 221 in the vertical state and cannot directly contact the outside. This can prevent the auxiliary hook 22 from accidentally hanging on other parts of the steel cage during the recovery process, thereby reducing the risk of accidents.

[0064] Advantage three: when the connecting rod 21 in the auxiliary hook assembly 2 is higher than the auxiliary hook 22, under the action of the weight of the counterweight block 221 itself, the lower surface of the counterweight block 221 abuts against the upper surface of the supporting plate 231, driving the L-shaped rod 23 at the hook mouth of the auxiliary hook 22 to be squeezed inward, so that the steel bars at the lifting point are always inside the auxiliary hook 22, which can effectively prevent accidental falling off during the lifting process, thereby avoiding casualties and property losses caused by the falling of the steel cage.

[0065] Advantage 4: The support leg 141 adopts a rotatable design. When lifting operations are not required, the support leg 141 is in a horizontal state and parallel to the crane 1 body; when lifting operations are required, the support leg 141 is rotated ninety degrees to be perpendicular to the ground, thereby avoiding damage caused by friction and collision between the support leg 141 and the ground when the crane 1 is driving on bumpy ground.

[0066] See also Figure 1 On the other hand, the present invention provides a steel cage hoisting device and a hoisting method thereof, which is characterized by comprising the following steps:

[0067] S1: The hoisting arm 11 is unfolded, and the main hook 13 and the auxiliary hook assembly 2 at the lower end of the pulley block are lowered by the wire rope 12, and the main hook 13 and the auxiliary hook assembly 2 are fixedly engaged with the lifting point of the steel cage;

[0068] S2: Control the hoisting arm 11 to lift the main hook 13 and the auxiliary hook assembly 2 at the same time, and the steel cage is hoisted and lifted horizontally. When the steel cage is lifted to a specified distance, the auxiliary hook assembly 2 is stable and does not move, and the main hook 13 continues to lift upward;

[0069] S3: After the steel cage is completely vertically hoisted, the auxiliary hook assembly 2 is in a tilted state, the auxiliary hook 22 is higher than the connecting rod 21, and the counterweight block 221 tilts and slides, driving the L-shaped rod 23 and the supporting plate 231 to tilt and rotate, so that the hook mouth of the auxiliary hook 22 is in an open state;

[0070] S4: The main hook 13 is stable and immovable, the wire rope 12 at the auxiliary hook assembly 2 is lifted upward, the connecting rod 21 is higher than the auxiliary hook 22, the counterweight 221 is limited by the limit assembly 26, and the hook opening of the auxiliary hook 22 is still in an open state. During this process, the steel cage at the auxiliary hook 22 automatically falls off from the hook opening;

[0071] S5: After the steel cage at the auxiliary hook 22 automatically falls off, under the cover of the counterweight block 221, the auxiliary hook 22 rises and returns to the initial position, and the main hook 13 stably moves the steel cage to the excavated pile hole and lowers it.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel cage hoisting device and a hoisting method thereof, characterized in that: include: A crane (1), the crane (1) comprising a lifting arm (11), the lifting arm (11) being internally connected to a steel wire rope (12) via a pulley block arranged at an output end thereof, the steel wire rope (12) being sequentially connected to a main hook (13) and an auxiliary lifting hook assembly (2) via the pulley block; The auxiliary hook assembly (2) comprises a connecting rod (21), one end of the connecting rod (21) is connected to the outer end of the steel wire rope (12), the other end of the connecting rod (21) is fixedly connected to the auxiliary hook (22), a counterweight block (221) is arranged outside the circumference of the auxiliary hook (22), the counterweight block (221) is designed as a hollow cylinder, a traction rope (222) is arranged on the upper surface of the counterweight block (221), one end of the traction rope (222) away from the counterweight block (221) is fixedly connected to the inside of the connecting rod (21), and a plurality of traction ropes (222) are arranged and distributed in a circumferential array with the connecting rod (21) as the axis. The auxiliary hook (22) is rotatably connected to an L-shaped rod (23) via a rotating shaft arranged inside the auxiliary hook (22); two L-shaped rods (23) are provided and are symmetrically distributed with the auxiliary hook (22) as the center; one end of the L-shaped rod (23) close to the lifting arm (11) is rotatably connected to a support rod (24) via a shaft arranged inside the auxiliary hook (22); a fixed shaft (25) is provided on the auxiliary hook (22) via a through groove arranged inside the auxiliary hook (22); one end of the support rod (24) away from the rotating shaft is rotatably connected to the fixed shaft (25); one end of a pair of L-shaped rods (23) away from the lifting arm (11) is fixedly connected to a supporting plate (231); the lower surface of the counterweight block (221) is in contact with the upper surface of the supporting plate (231); and a limiting component (26) for fixing the counterweight block (221) is provided on one side of the auxiliary hook (22).

2. A steel cage hoisting device and hoisting method according to claim 1, characterized in that: The position limiting assembly (26) comprises a fixed seat (261), the interior of the fixed seat (261) being slidably connected to a sliding block (263) via a sliding groove (262), and a side of the sliding block (263) away from the fixed seat (261) adopts a curved surface design.

3. A steel cage hoisting device and hoisting method according to claim 2, characterized in that: A baffle (264) is fixedly connected to the side of the fixed seat (261) away from the auxiliary hook (22), and a spring (265) that fits the outer surface of the sliding block (263) is provided on the side of the baffle (264) away from the supporting plate (231).

4. A steel cage hoisting device and hoisting method according to claim 1, characterized in that: Telescopic columns (14) are arranged on both sides of the crane (1); two groups of telescopic columns (14) are arranged and are symmetrically distributed with the crane (1) as the center; and output ends of the telescopic columns (14) are rotatably connected to support legs (141).

5. A steel cage hoisting device and hoisting method according to claim 4, characterized in that: The steps include: S1: The lifting arm (11) is unfolded, and the main hook (13) and the auxiliary hook assembly (2) at the lower end of the pulley block are lowered using the steel wire rope (12), and the main hook (13) and the auxiliary hook assembly (2) are fixedly engaged with the lifting point of the steel cage; S2: Controlling the lifting arm (11) to lift the main hook (13) and the auxiliary hook assembly (2) simultaneously, so that the steel cage is lifted horizontally. When the steel cage is lifted to a specified distance, the auxiliary hook assembly (2) remains stable and the main hook (13) continues to be lifted upward; S3: After the steel cage is completely vertically hoisted, the auxiliary hook assembly (2) is in a tilted state, the auxiliary hook (22) is higher than the connecting rod (21), and the counterweight (221) slides tiltedly, driving the L-shaped rod (23) and the supporting plate (231) to tilt and rotate, so that the hook mouth of the auxiliary hook (22) is in an open state; S4: the main hook (13) is stable and immobile, the steel wire rope (12) at the auxiliary hook assembly (2) is lifted upward, the connecting rod (21) is higher than the auxiliary hook (22), the counterweight (221) is limited by the limit assembly (26), and the hook opening of the auxiliary hook (22) is still in an open state. During this process, the steel cage at the auxiliary hook (22) automatically falls off from the hook opening; S5: After the steel cage at the auxiliary hook (22) automatically falls off, the auxiliary hook (22) rises and returns to its initial position under the cover of the counterweight (221), and the main hook (13) stably moves the steel cage to the already dug pile hole and lowers it.

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