Detachable steel cage hoisting device

Abstract

The present invention discloses a detachable steel cage hoisting device, comprising a suspension rod and a suspension hook. The lower section of the suspension rod is provided with a buckle and a latch, with the latch located below the buckle. The suspension hook is semi-frame-shaped, with a hook at the top adapted for the buckle and a slot at the bottom adapted for the latch. The effective length of the slot is greater than the vertical distance from the contact point between the hook and the buckle to the free end of the hook. The detachable steel cage hoisting device of the present invention can be reused for steel cage hoisting in tunnel construction, saving construction costs, being easy to operate, and being environmentally friendly.

Description

Technical Field

[0001] This invention relates to a workpiece for deep pit construction, and particularly to a detachable steel cage hoisting device. Background Technology

[0002] Reinforcing cages are commonly used building components in construction projects. During underground construction, the reinforcing cage is typically hoisted from the ground to a pre-excavated underground tunnel. Once in place, the cage remains suspended in the air while cement is poured into the tunnel, bonding the lower part of the cage to the tunnel. Throughout this construction process, a hoisting device is required to keep the reinforcing cage in its designated position while the cement hardens.

[0003] Previously, there were generally two methods for hoisting steel reinforcement cages into underground tunnels. One method involved welding a suitable-length hoisting rod to the top of the cage, using the rod to lift it into position, and then keeping the rod connected to the cage. Because the cage was located at a certain depth underground, disassembly was inconvenient, so it wasn't removed even after the cement had hardened. This method was wasteful of materials, as the steel bars used for the hoisting rod could not be reused. The other method involved using a hoisting rope to lift the cage into position, and then removing the rope after the cement had hardened. However, because the rope was flexible, it would sway during hoisting, and the force of the slurry during cement pouring could cause the cage to deviate from its intended position. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable steel cage hoisting device that can solve one or more of the above-mentioned problems.

[0005] According to one aspect of the present invention, a detachable rebar cage hoisting device is provided, comprising a lifting rod and a hook; the lower section of the lifting rod is provided with a buckle and a locking pin, the locking pin being located below the buckle; the hook is semi-frame shaped, with a hook adapted to the buckle at the upper part and an elongated hole adapted to the locking pin at the lower part; the effective length of the elongated hole is greater than the vertical distance from the contact point of the hook and buckle to the free end of the hook.

[0006] "Effective length of the elongated hole" refers to the distance the pin can move within the elongated hole. The contact point between the hook and the buckle is the position where they contact each other when the hook engages the buckle.

[0007] The detachable rebar cage hoisting device of this invention places the topmost rebar of the rebar cage inside the hook, and then hooks the hook's latch onto the rod's buckle. At this time, the rod's locking pin is located at the upper end of the hook's elongated hole. The rod is then lifted to lower the rebar cage to a suitable height in the predetermined tunnel. Cement is poured into the tunnel, and after the cement solidifies, the rod is moved downwards, causing the locking pin to move downwards along the elongated hole. Simultaneously, the locking pin moves towards the free end of the hook. When the upper edge of the locking pin is lower than the lower end of the hook's free end, due to gravity, the hook flips outwards, disengaging the hook from the locking pin. Finally, the rod is lifted, separating the detachable rebar cage hoisting device from the rebar cage. This detachable rebar cage hoisting device can be repeatedly used for rebar cage hoisting during tunnel construction, saving construction costs and offering convenient and environmentally friendly operation.

[0008] In some embodiments, the buckle of the detachable rebar cage hoisting device of the present invention is cylindrical, and the hook is a right-angle hook. This design ensures that the hook can engage with the buckle when the hook and the boom are closed, and also allows the hook to easily separate from the buckle when the hoisting device is disassembled.

[0009] In some embodiments, the locking pin of the detachable rebar cage hoisting device of the present invention is cylindrical and stepped, with the outer diameter of the fixed end being smaller than the width of the elongated hole and the outer diameter of the free end being larger than the outer diameter of the fixed end.

[0010] In some embodiments, the detachable rebar cage hoisting device of the present invention further includes a baffle; one end of the buckle is connected to the hoisting rod and the other end is connected to the baffle; one end of the locking pin is connected to the hoisting rod and the other end is connected to the baffle.

[0011] In some embodiments, the upper part of the lifting rod of the detachable rebar cage hoisting device of the present invention is provided with multiple lifting rings at different heights. This arrangement allows workers to easily select the appropriate lifting ring according to the required depth.

[0012] In some embodiments, the upper part of the lifting rod of the detachable rebar cage hoisting device of the present invention is provided with multiple through holes at different heights. This arrangement allows workers to easily select the appropriate through hole according to the required depth.

[0013] In some embodiments, the axes of the through holes of the detachable rebar cage hoisting device of the present invention are all perpendicular to the hoisting rod and not parallel. Steel pipes or other rod-shaped objects with high load-bearing capacity can be inserted into the two through holes in different axial directions. By supporting the two steel pipes on the ground on both sides of the tunnel or on the upper part of the wall, the position of the hook can be relatively fixed, preventing the rebar cage from swaying due to the impact force generated during cement pouring.

[0014] In some embodiments, the top of the lifting rod of the detachable rebar cage hoisting device of the present invention is provided with a support frame. The support frame allows the rebar cage to be fixed in position while waiting for the cement to harden, without consuming energy.

[0015] In some embodiments, the support frame of the detachable rebar cage hoisting device of the present invention includes at least two support rods, the middle of which is connected to the top of the hoisting rod by bolts. The two support rods can be arranged in a cross shape, and the middle of the support rods is fixedly connected to the top of the hoisting rod by bolts. This avoids the rebar cage from shaking due to the impact force generated during cement pouring when the rebar cage is hoisted in the tunnel for cement filling.

[0016] In some embodiments, the support frame of the present invention has an internal thread in the middle, and the upper part of the lifting rod has an external thread extending to the top that matches the internal thread. Depending on the required lifting depth of the reinforcing cage, the external thread at the top of the lifting rod can be screwed into the internal thread of the support frame to a suitable depth. This arrangement not only facilitates adjustment of the lifting depth of the reinforcing cage but also prevents the reinforcing cage from swaying due to the impact force generated during cement pouring when it is being lifted into the tunnel. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a detachable steel cage hoisting device according to one embodiment of the present invention.

[0018] Figure 2 This is a structural schematic diagram of a detachable steel cage hoisting device according to another embodiment of the present invention.

[0019] Figure 3 for Figure 2 The diagram shows the exploded structure of the detachable steel cage hoisting device.

[0020] Figure 4 for Figure 1 The diagram shows the structural state of the detachable rebar cage hoisting device after it is separated from the rebar cage.

[0021] Figure 5 This is a schematic diagram of the detachable steel cage hoisting device in use according to one embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the detachable steel cage hoisting device in use according to another embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the detachable steel cage hoisting device in use, according to another embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the upper part of the lifting rod of the detachable steel cage hoisting device according to another embodiment of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0027] Finally, it should be noted that in this document, relational terms such as first and second, counterclockwise and clockwise are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Figure 1 The structure of a detachable steel cage hoisting device according to one embodiment of the present invention is shown schematically.

[0030] refer to Figure 1 As shown, the detachable steel cage hoisting device includes a lifting rod 10 and a hook 20.

[0031] The lower section of the boom 10 is provided with a buckle 11 and a locking pin 12, with the locking pin 12 located below the buckle 11.

[0032] The hook 20 is semi-frame shaped, with a hook 21 at the top that matches the buckle 11, and an elongated hole 22 at the bottom that matches the locking pin 12. The effective length of the elongated hole 22 should be greater than the vertical distance from the contact point between the hook 21 and the buckle 11 to the free end of the hook 21.

[0033] When the elongated hole 22 is fitted onto the locking pin 12, and the locking pin 12 is located at the upper end of the elongated hole 22, the hook 21 can hook the buckle 11. As the lifting rod 10 is moved downwards, causing the locking pin 12 to move downwards along the elongated hole, the buckle 11 also moves towards the free end of the hook 21. When the upper edge of the buckle 11 is lower than the lower end of the free end of the hook 21, the hook 21 will disengage from the buckle 11. At this time, due to gravity, the hook 20 will rotate outwards about the locking pin 12 as the pivot axis, and the opening of the hook 20 will naturally move away from the lifting rod 10.

[0034] When using the detachable rebar cage hoisting device of the present invention to hoist a rebar cage, the topmost rebar of the rebar cage can be placed inside the hook 20, and then the hook 21 of the hook 20 can be hooked onto the buckle 11 of the hoisting rod 10. At this time, the locking pin 12 of the hoisting rod 10 is located at the upper end of the elongated hole 22 of the hook 20. The hoisting rod 10 is then lifted, and the rebar cage is lowered into a predetermined tunnel to a suitable depth. Cement is poured into the tunnel, covering the lower half of the rebar cage. After the cement solidifies into concrete, the rebar cage 30 becomes integrated with the concrete. The hoisting rod 10 is then moved downwards so that the locking pin 12 is located at the lower end of the elongated hole 22. At this time, due to gravity, the hook 20 flips outwards, and the hook 21 and buckle 11 disengage. Finally, the hoisting rod 10 is lifted, and the detachable rebar cage hoisting device can be separated from the rebar cage 20. This detachable rebar cage hoisting device can be reused for hoisting rebar cages, saving construction costs, and is convenient and environmentally friendly.

[0035] The buckle 11 can be cylindrical, and the hook 21 can be right-angled. This design ensures that the hook 21 can engage with the buckle 11 when the hook 20 and the boom 10 are closed, and also allows the hook 21 to easily separate from the buckle 11 when the lifting device is disassembled.

[0036] The shape of the locking pin 12 can be cylindrical or stepped. The outer diameter of the fixed end of the locking pin 12 and the hanging rod 10 is smaller than the width of the elongated hole 22, and the outer diameter of the free end is larger than the outer diameter of the fixed end.

[0037] The upper part of the boom 10 can be equipped with multiple lifting rings 13 at different heights. This arrangement allows workers to easily select the appropriate lifting ring 13 according to the required depth. In use, after assembling the lifting device with the rebar cage, the worker can use the lifting ring 13 of the appropriate height to insert a steel pipe or other rod-like object with high load-bearing capacity into the lifting ring 13, and then place both ends of the steel pipe on the ground on both sides of the tunnel. The rebar cage can then be positioned at the appropriate depth in the tunnel, which is convenient, quick, and saves time and effort.

[0038] In this embodiment, the lifting ring 13 is a ring-shaped rope. In other embodiments, the lifting ring 13 may also be configured as a through hole 15 located at different heights on the upper part of the lifting rod 10.

[0039] refer to Figure 8As shown, the axis of the through hole 15 is perpendicular to the lifting rod 10 and not parallel, located in different directions. Steel pipes or other rods with high load-bearing capacity, adapted to the inner diameter of the through hole 15, can be inserted into the two through holes 15 in different axial directions. By placing the two steel pipes on the ground 40 on both sides of the tunnel or on the upper part of the wall, the position of the hook 20 can be relatively fixed, preventing the reinforcing cage from swaying due to the impact force generated during cement pouring.

[0040] Figure 2 and Figure 3 The structure of a detachable steel cage hoisting device according to another embodiment of the present invention is shown schematically.

[0041] refer to Figure 2 and Figure 3 As shown, the detachable steel cage hoisting device includes a lifting rod 10 and a hook 20.

[0042] The lower section of the boom 10 is provided with a buckle 11 and a locking pin 12, with the locking pin 12 located below the buckle 11.

[0043] The hook 20 is semi-frame shaped, with a hook 21 at the top that matches the buckle 11, and an elongated hole 22 at the bottom that matches the locking pin 12.

[0044] The elongated hole 22 is fitted onto the locking pin 12. When the locking pin 12 is located at the upper end of the elongated hole 22, the hook 21 can hook the buckle 11. When the locking pin 12 is located at the lower end of the elongated hole 22, the hook 21 will disengage from the buckle 11. At this time, due to the effect of gravity, the hook 20 will rotate outward about the locking pin 12 as the pivot axis, and the opening of the hook 20 will move away from the lifting rod 10.

[0045] A baffle 14 can also be installed on the lower section of the boom 10. One end of the buckle 11 is connected to the boom 10 and the other end is connected to the baffle 14; one end of the locking pin 12 is connected to the boom 10 and the other end is connected to the baffle 14.

[0046] The top of the hanger 10 is equipped with a support frame 50, which can fix the position of the steel cage while waiting for the cement to harden, without consuming energy.

[0047] In this embodiment, the support frame 50 includes two cross-arranged support rods 51, the middle of which can be bolted to the top of the lifting rod 10. The two support rods 51 can be arranged in a cross shape, and the middle of the support rods 51 can be fixedly connected to the top of the lifting rod 10 by bolts. This prevents the steel cage from swaying due to the impact force generated during cement pouring when it is hoisted into the tunnel. In other embodiments, the support rods 50 can also be fixedly installed at the upper end of the lifting rod 10, or they can be other shapes such as circular or rectangular frames.

[0048] The middle position of the support rod 51 refers to the position between the two ends of the support rod 51, and is not limited to the center position of the support rod 51.

[0049] Figure 4 The diagram schematically illustrates the structure of the detachable rebar cage hoisting device according to one embodiment of the present invention when the hook is open.

[0050] refer to Figure 4 As shown, when the cement solidifies into concrete, the lower half of the steel cage 30 becomes one with the concrete, and the position of the hook 20 and the steel cage is relatively fixed. The worker can move the boom 10 downward so that the locking pin 12 is located at the lower end of the elongated hole 22. At this time, due to the effect of gravity, the hook 20 flips outward, and the locking hook 21 disengages from the buckle 11. First, move the boom 10 laterally, and then lift the boom 10 to separate the detachable steel cage hoisting device from the steel cage 30.

[0051] Figure 5 The illustration schematically shows the usage state of a detachable steel cage hoisting device according to one embodiment of the present invention.

[0052] refer to Figure 5 As shown, place the topmost steel bar of the steel cage into the hook 20, and then hook the hook 21 of the hook 20 into the buckle 11 of the lifting rod 10. At this time, the locking pin 12 of the lifting rod 10 is located at the upper end of the elongated hole 22 of the hook 20. Pass the support rod 51 through the lifting ring 13 of appropriate height.

[0053] Lift boom 10 and lower the steel cage 30 into the designated tunnel to a suitable depth. Support rod 51 is placed on the ground 40 on both sides of the tunnel. Cement is poured into the tunnel, covering the lower half of the steel cage 30. After the cement hardens into concrete, the steel cage 30 becomes integrated with the concrete. Then, boom 10 is moved downwards so that the locking pin 12 is positioned at the lower end of the elongated hole 22. At this point, due to gravity, the hook 20 flips outwards, and the locking hook 21 and buckle 11 disengage. Finally, boom 10 is lifted, separating the detachable steel cage lifting device from the steel cage 20.

[0054] Figure 6 The illustration schematically shows the usage of a detachable steel cage hoisting device according to another embodiment of the present invention.

[0055] refer to Figure 6 As shown, place the topmost steel bar of the steel cage into the hook 20, and then hook the hook 21 of the hook 20 onto the buckle 11 of the rod 10. At this time, the pin 12 of the rod 10 is located at the upper end of the elongated hole 22 of the hook 20.

[0056] The support frame 50 includes two cross-shaped support rods 51, which can be arranged in a cross shape. The middle part of the two support rods 51 can be fixedly connected to the top of the lifting rod 10 by bolts. By fixing the support rods 51 to the lifting rod 10 with bolts, the impact force generated during cement pouring can be avoided, preventing the steel cage from shaking.

[0057] Raise the boom 10 to lower the steel cage 30 into the designated tunnel to a suitable depth. The two support rods 51 are positioned on the ground 40 or the upper part of the wall on either side of the tunnel for support. Cement is then poured into the tunnel, ensuring it covers the lower half of the steel cage 30. Once the cement has hardened into concrete, the steel cage 30 becomes integrated with the concrete. Due to the constraint of the steel cage 30, the position of the hook 20 relative to the cage is fixed. The worker moves the boom 10 downwards so that the locking pin 12 is positioned at the lower end of the elongated hole 22. At this point, due to gravity, the hook 20 flips outwards, and the locking hook 21 disengages from the buckle 11. Finally, the boom 10 is lifted, separating the detachable steel cage lifting device from the steel cage 20.

[0058] Figure 7 The illustration schematically shows the usage of a detachable steel cage hoisting device according to another embodiment of the present invention.

[0059] refer to Figure 7 As shown, the support frame 50 can be provided with an internal thread in the middle, and the upper part of the lifting rod 10 is provided with an external thread that extends to the top and matches the internal thread. Workers can screw the external thread at the top of the lifting rod 10 into the internal thread of the support frame 50 to a suitable depth according to the required lifting depth of the reinforcing cage. This design not only facilitates adjustment of the lifting depth of the reinforcing cage 30, but also prevents the reinforcing cage from swaying due to the impact force generated during cement pouring when the reinforcing cage 30 is being lifted into the tunnel.

[0060] The support frame 50 can also be in other shapes such as disc or rectangle.

[0061] The above are merely some embodiments of the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A detachable steel cage hoisting device, characterized in that, include: booms and hooks; The lower section of the boom is provided with a buckle and a locking pin, with the locking pin located below the buckle; The hook is semi-frame shaped, with a hook at the upper free end that matches the buckle, and an elongated hole at the lower free end that matches the locking pin. The buckle is cylindrical, and the hook is a right-angle hook; The effective distance of the elongated hole is greater than the vertical distance from the contact point of the hook and the buckle to the free end of the hook; The locking pin is cylindrical and stepped, with the outer diameter of the fixed end being smaller than the width of the elongated hole, and the outer diameter of the free end being larger than the outer diameter of the fixed end; When hoisting the steel cage, the lifting rod and the hook form an annular space, and the buckle is located inside the hook.

2. The detachable steel cage hoisting device according to claim 1, characterized in that: It also includes baffles; One end of the buckle is connected to the boom, and the other end is connected to the baffle. One end of the locking pin is connected to the boom, and the other end is connected to the baffle.

3. The detachable steel cage hoisting device according to any one of claims 1 to 2, characterized in that: The upper part of the boom is equipped with multiple lifting rings at different heights.

4. The detachable steel cage hoisting device according to any one of claims 1 to 2, characterized in that: The upper part of the boom has multiple through holes at different heights.

5. The detachable steel cage hoisting device according to claim 4, characterized in that: The axes of the through holes are all perpendicular to the lifting rod and not parallel to it.

6. The detachable steel cage hoisting device according to any one of claims 1 to 2, characterized in that: The top of the boom is equipped with a support frame.

7. The detachable steel cage hoisting device according to claim 6, characterized in that: The support frame includes at least two support rods, the middle section of which is connected to the top of the hanger rod by bolts.

8. The detachable steel cage hoisting device according to claim 6, characterized in that: The support frame has an internal thread in the middle, and the upper part of the hanger has an external thread that extends to the top and matches the internal thread.

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