Reinforcement cage hoisting construction and connection auxiliary device

Abstract

The utility model discloses a reinforcement cage hoisting construction and connection auxiliary device which solves the technical problem that in the prior art, tools for auxiliary positioning and auxiliary construction do not exist in the pile foundation reinforcement cage hoisting construction process. The device comprises a light steel base, an electric linear push rod, at least three I-shaped rails, a sliding table and a clamping jaw, and is characterized in that the light steel base is of an annular contour, the I-shaped rails are fixedly arranged on the light steel base and are arranged along the radius position of the light steel base, the sliding table is installed on the light steel base, and the clamping jaw is arranged on the sliding table. The two ends of the electric linear push rod are hinged to the I-shaped rail and the sliding table respectively and drive the sliding table to act, and the clamping jaw is fixedly installed on the sliding table. The electric linear push rod of the device is driven by a motor and operated in a one-key mode, so that the clamping jaws can stretch out rapidly, multi-point supporting is carried out on the reinforcement cage in the circumferential direction, the construction efficiency is improved, and the auxiliary positioning quality of the reinforcement cage is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for steel cage hoisting, lowering and connecting construction. Background Technology

[0002] During the construction of cast-in-place piles, it is necessary to hoist and lower the reinforcing cage. This process requires connecting multiple sections of the cage to form a single unit. Specifically, the first section of the reinforcing cage is hoisted using a two-point hoisting method. The first hoisting point is located at the bottom of the cage, and the second point is located between the midpoint and the upper third of the cage's length. During hoisting, the first point is raised first, slightly lifting the cage before simultaneously lifting it with the second point. Once the cage is off the ground, the first point is lifted, and the second point is raised. As the second point rises, the first point is slowly lowered until the cage is perpendicular to the ground, at which point hoisting stops. The first point is released, and the cage is checked for straightness; any bends are straightened. Once the cage enters the pile hole, it should be straightened and lowered slowly, avoiding any swinging or collision with the hole wall. When the reinforcing cage reaches the vicinity of the second hoisting point and the reinforcing hoops are close to the hole opening, a steel pipe is passed under the reinforcing hoops to temporarily support the cage at the hole opening. Then, following the steps described above, hoist the second section of the reinforcing cage and mechanically connect the two reinforcing cages using threaded sleeves. The same method is used to complete the construction of the third, fourth...Nth section of the reinforcing cage.

[0003] In this process, the use of steel pipes to temporarily support the reinforcing cage has the following drawbacks:

[0004] The steel pipe is a slender rod, subject to bending deformation, such as a depression in the middle. When both ends of the pipe are placed directly in the soft soil on either side of the pile hole, there is a risk of sinking. Once sunken, retrieving and placing the pipe becomes difficult, and there is a safety risk of workers falling while doing so. Therefore, there is an urgent need for specialized equipment, in particular. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for the hoisting and connection of steel cages, solving the technical problem that existing technologies lack auxiliary positioning and construction tools for the hoisting and installation of steel cages for pile foundations.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A rebar cage hoisting and connection auxiliary device includes a light steel base, an electric linear actuator, I-beam rails, a slide table, and claws. The light steel base has a circular outline, and at least three I-beam rails are fixedly installed on the light steel base, with the I-beam rails positioned along the radius of the light steel base. A slide table is installed on the light steel base. The electric linear actuator is hinged to the I-beam rails and the slide table at both ends and drives the slide table to move. Claws are fixedly installed on the slide table.

[0008] Furthermore, the light steel base is provided with bolt fastening holes, and the anchor bolts fix the light steel base to the temporary foundation.

[0009] Furthermore, the light steel base is a double-layered annular structure formed by welding galvanized steel pipes.

[0010] Furthermore, multiple I-beam rails are arranged at equal intervals along the circumference of the light steel base.

[0011] Furthermore, the slide table and the upper flange of the I-beam rail are slidably engaged through a T-shaped sliding structure.

[0012] Furthermore, the claw is a channel steel component, and the claw forms a cantilever structure on the slide.

[0013] Furthermore, at least one slot is provided on the claw, which is located at the end of the cantilever.

[0014] Furthermore, a mechanical limit switch is installed between the light steel base and the slide table, which triggers the electric linear actuator to stop in place.

[0015] The beneficial effects of this utility model are:

[0016] The device has at least four, for example, eight, clamps, which can clamp the rebar cage from multiple directions to achieve rapid fixation, facilitating welding operations between rebar cages.

[0017] The electric linear actuator of this device is driven by a motor and operated with a single button. It enables the rapid extension of the jaws and provides multi-point support for the rebar cage in the circumferential direction, improving construction efficiency and enhancing the quality of auxiliary positioning of the rebar cage. Attached Figure Description

[0018] Figure 1 This diagram illustrates the operational status of the device.

[0019] Figure 2 This is a three-dimensional view of the device.

[0020] Figure 3 This is a partial perspective view (upper axonometric view) of the device.

[0021] Figure 4This is a partial perspective view (lower axonometric view) of the device.

[0022] Figure 5 This is a plan view of the device.

[0023] Figure 6 This is a partial cross-sectional view of a linear sliding structure.

[0024] Figure 7 This is a longitudinal section view of a linear sliding structure.

[0025] Figure 8 for Figure 7 The state of protruding movement.

[0026] In the picture:

[0027] 10 Light steel base,

[0028] 20 electric linear actuators,

[0029] 30mm I-beam rail, 31mm hinge.

[0030] 40 slide table, 41 steel pin,

[0031] 50 card claws, 51 card slots

[0032] 60 anchor bolts,

[0033] 00 Steel cage. Detailed Implementation

[0034] refer to Figure 1 The auxiliary device for hoisting and connecting the reinforcing cage includes a light steel base 10, an electric linear push rod 20, an I-beam rail 30, a slide table 40, and a claw 50. The light steel base 10 has a circular outline and is arranged at the pile hole of the pile foundation. The middle area is the area for lowering the reinforcing cage. Bolt fastening holes are provided on the light steel base, and the light steel base is simply fixed to the temporary foundation by anchor bolts 60.

[0035] This embodiment is further described in conjunction with the appendix to the specification. Figure 2 To be continued Figure 8 A more detailed explanation of the implementation process of this technology will be provided.

[0036] Furthermore, the aforementioned light steel base 10 is a light steel structure. Specifically, the light steel base is formed by welding 40*40 (mm) galvanized steel pipes into a circular outline. In this embodiment, a double-layer structure is preferred, consisting of upper and lower layers, supported and connected by short steel pipes to form a three-dimensional structure. Each layer of the aforementioned galvanized steel pipe includes a circular portion and a straight portion, as shown in the reference. Figures 2-5 .

[0037] Furthermore, six I-beam rails 30 are welded to the upper surface of the light steel base 10. These I-beam rails 30 are positioned along the radius of the circular light steel base, as shown in the reference diagram. Figure 5 The I-beam rails are welded and fixed to the light steel base to form a fixed structure. The six I-beam rails mentioned above are arranged at equal intervals.

[0038] Correspondingly, along the radial direction of the light steel base, each of the six I-beams 30 is fitted with an electric linear actuator 20 via a hinge 31.

[0039] The aforementioned electric linear actuator 20 is installed on the outer ring of a light steel base. A slide 40 is mounted on the light steel base. The lower surface of the slide has a T-shaped groove, meaning that the slide and the I-beam rail slide against each other via a T-shaped sliding structure. A hinge seat is provided on the slide 40, and the piston rod of the electric linear actuator is hinged to the slide via a steel pin 41. It is easy to understand that the movement of this electric linear actuator drives the slide.

[0040] During the operation, the reciprocating motion of the electric linear actuator 20 drives the slide to move forward or backward.

[0041] A clamp 50 is fixedly installed on the aforementioned slide platform using screws. The clamp 50 is made of channel steel, providing higher rigidity. The clamp 50 forms a cantilever structure on the slide platform, facing the inner ring cavity of the light steel base. A slot 51 is provided on the clamp corresponding to the cantilever, located at the upper end of the cantilever. This slot is used to engage with the ring reinforcement bars in the reinforcing cage, enabling rapid temporary fixation of the reinforcing cage 00.

[0042] The aforementioned sliding platform and I-beam rail are guided by a straight groove in a T-shape to prevent tipping. This straight groove provides stable sliding guidance for the movement of the clamping claws. Simultaneously, this T-shaped fit effectively counteracts the overturning moment when the clamping claws grasp the reinforcing cage, which is beneficial for structural stability and smooth operation.

[0043] Furthermore, multiple slots 51 are provided on the aforementioned claws to correspond to the size and position of steel cages of different diameters, thus meeting the requirements of on-site construction.

[0044] Correspondingly, a mechanical limit switch is installed between the aforementioned light steel base and the slide table. This mechanical limit switch triggers the emergency stop action of the electric linear actuator. A touch switch is used in conjunction to control the start and stop of the electric linear actuator.

[0045] The method of using the above device is as follows:

[0046] 1. Construction preparation: Install the above-mentioned steel cage hoisting and connection auxiliary device at the pile hole, and turn on the power for use.

[0047] 2. Crane positioning: Before positioning the crane, the site should be leveled, compacted, and free of obstacles. After positioning, the crane boom should be fixed to keep the crane stable and level.

[0048] 3. Hoisting the First Section of the Reinforcing Cage: To prevent deformation during hoisting, a cross-shaped reinforcing brace is installed every 4 meters before the cage leaves the factory. During installation, all cross-shaped braces must be removed from bottom to top without omission. A two-point hoisting method is used. The first hoisting point is located at the bottom of the reinforcing cage, and the second hoisting point is located between the midpoint and the upper third of the cage's length. During hoisting, first lift the first point, slightly raising the cage before simultaneously lifting it with the second point. Once the cage is off the ground, stop hoisting the first point and continue lifting the second point. As the second point rises, slowly lower the first point until the cage is perpendicular to the ground, then stop hoisting. Release the first point and check the cage for straightness; straighten it if bent. After the cage enters the pile hole, it should be straightened and lowered slowly, strictly avoiding any swinging or collision with the hole wall. When the reinforcing cage is lowered to the vicinity of the second lifting point and the reinforcing hoist is close to the pile hole, press the start button. Use the four claws in the auxiliary device for lifting and connecting the reinforcing cage to extend and lock the ring reinforcing cage, temporarily supporting the reinforcing cage at the hole opening to achieve temporary fixation.

[0049] This technology uses a steel cage hoisting and connection auxiliary device to replace the original steel pipe for temporary positioning and support of the steel cage. The six claws are evenly arranged along the circumference, which can effectively reduce the deviation between the center of the steel cage and the center of the pile hole, and ensure that the deviation is less than 50mm. Its verticality is kept within the specification range, so that the concrete protective layer of the steel cage meets the requirements of thickness and verticality.

[0050] 4. Hoisting the second section of the reinforcing cage: Hoist the second section of the reinforcing cage using the method described above, so that the upper and lower sections of the reinforcing cage are on the same axis and connected. With the assistance of a crane, the reinforcing bars are connected, for example by welding or threaded sleeve connection.

[0051] 5. Second section: Rebar cage connection and installation: The upper and lower rebar cages are connected by threaded sleeves. During the connection process, adjust the verticality of the upper rebar cage. After the connection is completed, press the reverse button of the electric linear push rod to retract the four claws, and continue to lower the rebar cage with the assistance of the crane.

[0052] 6. For the installation of the third to Nth steel cages, repeat steps 4 to 5 until all steel cages are installed.

[0053] 7. Finally, weld the reinforcing cage support bars. The length of the support bars must be calculated based on the borehole elevation measured on-site by the surveying team. After verification, lower them to the design elevation before welding and initial positioning. The positioning process also uses the aforementioned reinforcing cage hoisting and connection auxiliary device. Specifically, the four claws of the device are extended and secured to the reinforcing cage, temporarily supporting it at the borehole opening. This keeps the reinforcing cage in a suspended state, maintaining its vertical position under its own weight, which facilitates the next concrete pouring process.

[0054] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A reinforcing cage hoisting construction and connecting auxiliary device, comprising a light steel base, an electric linear push rod, an I-shaped rail, a sliding table and a clamping jaw, characterized in that, The light steel base is circular in profile, at least three I-shaped rails are fixedly arranged on the light steel base, the I-shaped rails are arranged along the radial position of the light steel base, a sliding table is mounted on the light steel base, the electric linear push rod is hingedly connected with the I-shaped rails and the sliding table at two ends and drives the sliding table to move, and a claw is fixedly mounted on the sliding table.

2. The reinforcement cage lifting and connecting aid of claim 1, wherein, The light steel base is provided with bolt fastening holes, and foundation bolts are used to fix the light steel base on the temporary foundation.

3. The reinforcement cage lifting and connecting aid of claim 2, wherein, The light steel base is a double-layer structure in the shape of a circular ring formed by welding galvanized steel pipes.

4. The reinforcement cage lifting and connecting aid of claim 1, wherein, A plurality of I-shaped rails are arranged at equal intervals along the circumference of the light steel base.

5. The reinforcement cage lifting and connecting aid of claim 4, wherein, The sliding table and the upper flange of the I-shaped rail are slidably connected through a T-shaped sliding structure.

6. The reinforcement cage lifting and connecting aid of claim 5, wherein, The claw is a channel steel member, and the claw forms a cantilever structure on the sliding table.

7. The reinforcement cage lifting and connecting aid of claim 6, wherein, At least one clamping groove is arranged on the claw and arranged at the end of the cantilever.

8. The reinforcement cage lifting and connecting aid of claim 1, wherein, Mechanical limit switches are mounted between the light steel base and the sliding table, and the mechanical limit switches trigger the in-place emergency stop action of the electric linear push rod.

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