Overlength exposed main reinforcement prefabricated stand column hoisting device

Abstract

The utility model relates to a hoisting device for an ultra-long exposed main reinforcement prefabricated stand column. The utility model relates to a lifting appliance, which comprises a lifting seat, at least two rotating shafts detachably connected to the lifting appliance through middle connecting pieces, and an extended lifting rod, wherein one end of the extended lifting rod is sleeved on the rotating shafts in a sliding manner and is locked on the rotating shafts through first fastening pieces; the lifting seat is arranged relative to the moving end of the lifting equipment, the length direction of the extension lifting rod is respectively perpendicular to the axial lead of the rotating shaft and the axial lead of the lifting shaft, the axial lead of the rotating shaft is parallel to the axial lead of the lifting shaft, the length direction of the extension lifting rod is perpendicular to the axial lead of the lifting shaft, and the length direction of the extension lifting rod is parallel to the axial lead of the lifting shaft. And the lifting shaft is arranged opposite to the lifting opening of the upright post lifting lug. The rotating shaft is detachably connected with the lifting seat and the lifting rod, so that the lifting shaft can slide and be locked along the length direction of the extension lifting rod, the position of the lifting shaft can be adjusted, the extension lifting rod with proper length can be mounted based on the upright post lifting lug, the efficiency of lifting operation is improved, and the safety of the lifting operation is improved. In addition, torsional deformation is not prone to occurring in the hoisting process, so that the defect that an exposed main reinforcement is pressed by an original sling is directly overcome, and the purpose of preventing the exposed reinforcement from being damaged and deformed by external force in the hoisting process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting of prefabricated concrete columns, in particular to a hoisting device for prefabricated columns with extra-long exposed main reinforcements. Background Art

[0002] In order to reduce the impact of the construction industry on the environment and resources, the concepts of low-carbon energy saving, green ecology and sustainable development are widely applied in construction production. At present, prefabricated concrete components are mainly used to reduce environmental pollution. This method has certain economic advantages. It can not only ensure the quality of prefabricated parts, but also facilitate production management and improve the problem of power resource shortage. As a common building component, prefabricated concrete columns are widely used for the support and load-bearing of bridge building structures.

[0003] Prefabricated column products have a wide range of application value in the field of bridge construction and construction research, but traditional cast-in-place column products are difficult to guarantee the precision requirements of components, and cannot achieve accurate splicing of the cap beam, column, and small box beam. Therefore, the end of the prefabricated column has one end of exposed main reinforcement to facilitate the subsequent accurate splicing of the cap beam, column, and small box beam. The length of the exposed main reinforcement of the prefabricated column should not be less than 80mm, and should not be greater than half the length of the column section size or half the length of the horizontal span of the top reinforcement. The length of the main reinforcement should have a certain margin to facilitate the flexibility of the structure. However, during the hoisting process of the prefabricated column with ultra-long exposed main reinforcement, the hoisting end of the gantry crane is directly installed on the column lifting ear through the sling. During the hoisting process, the sling is easy to twist and deform and press on the exposed main reinforcement, causing damage and deformation of the exposed main reinforcement, thereby affecting the load-bearing capacity and overall safety of the column, which needs to be improved. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a lifting device for prefabricated columns with extra-long exposed main reinforcement in view of the above-mentioned deficiencies in the prior art. The device is based on an extended lifting rod with adjustable corresponding arrangement positions of column lifting ears and easy disassembly and assembly, thereby achieving the purpose of preventing the exposed steel bars from being damaged and deformed by external forces during the lifting process.

[0005] The above utility model object of the utility model is achieved through the following technical solutions:

[0006] A lifting device for a prefabricated column with extra-long exposed main reinforcement, comprising a hanging seat, at least two rotating shafts detachably connected to the hanging seat through an intermediate connecting piece, an extended hanging rod with one end slidingly sleeved on the rotating shaft and locked on the rotating shaft through a first fastener, and a hanging shaft slidingly passed through the other end of the extended hanging rod and locked on the extended hanging rod through a second fastener. The hanging seat is arranged relative to the moving end of the lifting equipment, the length direction of the extended hanging rod is perpendicular to the axis line of the rotating shaft and the hanging shaft, respectively, and the axis lines of the rotating shaft and the hanging shaft are parallel to each other, and the hanging shaft is arranged relative to the lifting opening of the column lifting ear.

[0007] By adopting the above technical scheme, during the lifting process, the hanging seat is first fixedly connected to the mobile end of the lifting equipment, and the rotating shaft is detachably connected to the hanging seat through the intermediate connecting piece, so as to adapt the extension hanger according to the length of the exposed main reinforcement, and then one end of the corresponding extension hanger is sleeved on the rotating shaft, and the extension hanger is locked on the rotating shaft through the first fastener to achieve the fixation of the extension hanger on the rotating shaft, and then one end of the hanging shaft is passed through the other end of the extension hanger and the lifting opening of the column hanging ear, and the hanging shaft is locked on the extension hanger through the second fastener to achieve the fixation of the hanging shaft on the extension hanger; at the same time, since there are large or small deviations in the installation positions of different column hanging ears, the length direction of the extension hanger is perpendicular to the axial center line of the rotating shaft and the hanging shaft, and the rotating shaft and the hanging shaft are respectively perpendicular to the axial center line of the rotating shaft and the hanging shaft. The axis lines are arranged in parallel to each other, so that the position of the extended hanger on the rotating shaft can be fine-tuned according to the position of the column lifting lug; during lifting, the mobile end of the lifting equipment drives the hanging seat to move upward, so that the extended hanger drives the column to move upward through the hanging shaft and the lifting lug, and the lifting operation of the column is completed; in this process, by setting the rotating shaft, the hanging seat and the hanging rod in a detachable connection form, the hanging shaft can be slid and locked along the length direction of the extended hanger, so as to adjust the position of the hanging shaft, and the extension hanger of a suitable length can be installed based on the column lifting lug, which not only improves the efficiency of the lifting operation, but also is not easy to torsion deformation during the lifting process, thereby directly eliminating the defect of the original sling pressing on the exposed main reinforcement, and achieving the purpose of avoiding external force damage and deformation of the exposed steel bars during the lifting process.

[0008] The utility model is further configured as follows: the intermediate connecting member includes a pair of ear plates arranged on the suspension seat and for the rotating shaft to pass through, a retaining ring arranged at one end of the rotating shaft, a radial limiting hole opened at the other end of the rotating shaft, and a limiting strip tightly inserted into the radial limiting hole, a first gap for the extension of the suspension rod is reserved between the pair of ear plates, and the retaining ring and the limiting strip are respectively overlapped on the outer surface of the pair of ear plates.

[0009] By adopting the above technical solution, during installation, the end of the rotating shaft close to the radial limiting hole is passed through one of the ear plates, the extended suspension rod, and the other ear plate in sequence until the retaining ring overlaps and contacts the surface of one of the ear plates, and then the limiting strip is inserted into the radial limiting hole and overlaps the surface of the other ear plate to complete the installation of the rotating shaft on the suspension seat; during disassembly, the limiting strip is removed, and the first fastener is loosened and unlocked, and the rotating shaft can be removed and replaced with a new extended suspension rod.

[0010] The utility model is further configured as follows: a gripping portion is provided at one end of the rotating shaft close to the retaining ring.

[0011] By adopting the above technical solution, it is convenient for users to grasp and apply force.

[0012] The utility model is further configured as follows: a first guide surface is arranged at one end of the rotating shaft close to the limiting strip.

[0013] By adopting the above technical solution, the first guide surface is used to guide the rotating shaft to pass through one of the ear plates, the extended suspension rod, and the opening of the other ear plate in sequence.

[0014] The utility model is further configured as follows: the limit strip is U-shaped.

[0015] The adoption of the above technical solution is helpful to ensure the installation stability of the rotating shaft.

[0016] The utility model is further configured as follows: the extended suspension rod includes a pair of extension bars, and a first sleeve and a second sleeve respectively inserted through the two ends of the extension bars; a second gap for installing a column hanging ear is reserved between the pair of extension bars; the first sleeve is gap-sleeved on the rotating shaft and is provided for installing the first fastener; the second sleeve is gap-sleeved on the suspension shaft and is provided for installing the second fastener.

[0017] By adopting the above technical solution, the extension bar not only plays a limiting role on both sides of the column lifting ear, but also can adaptively adjust the second gap width according to the thickness of the column lifting ear by locking and unlocking the first fastener and the second fastener, which is beneficial to improving the lifting stability.

[0018] The utility model is further configured as follows: the first sleeve and the second sleeve are respectively protrudingly arranged on the surface of the extension strip away from the second gap.

[0019] The adoption of the above technical solution is helpful to ensure the installation stability of the suspension shaft.

[0020] The utility model is further configured as follows: the first fastener includes a first nut arranged on the first sleeve, and a first bolt threadedly connected to the first nut, and an end of the first bolt passes through the first sleeve and tightly contacts the surface of the rotating shaft.

[0021] By adopting the above technical solution, the installation of the extension bar on the rotating shaft is facilitated.

[0022] The utility model is further configured as follows: the second fastener includes a second nut arranged on the second sleeve, and a second bolt threadedly connected to the second nut, and an end of the second bolt passes through the second sleeve and tightly contacts the surface of the suspension shaft.

[0023] By adopting the above technical solution, the installation of the hanging shaft on the extension bar is facilitated.

[0024] The utility model is further configured as follows: second guide surfaces are respectively provided at both ends of the suspension shaft.

[0025] By adopting the above technical solution, the second guide surface is used to guide the hanging shaft to pass through the two second sleeves in sequence.

[0026] To sum up, the beneficial technical effect of the utility model is as follows: by setting the rotating shaft, the hanging seat and the hanging rod as a detachable connection form, the hanging shaft can be slid and locked along the length direction of the extended hanging rod, so as to adjust the position of the hanging shaft, and the extended hanging rod of appropriate length can be installed based on the column lifting ear, which not only improves the efficiency of the lifting operation, but also makes it less likely to torsion and deformation occur during the lifting process, thereby directly eliminating the defect of the original sling compressing the exposed main reinforcement, and achieving the purpose of preventing the exposed steel bars from being damaged and deformed by external forces during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the main structure of the lifting device of the utility model.

[0028] Figure 2 It is a left-side structural schematic diagram of the lifting device of the utility model.

[0029] Figure 3 yes Figure 1 Cross-sectional view along the AA direction.

[0030] Figure 4 yes Figure 1 Cross-sectional view along the BB direction.

[0031] In the figure, 1. suspension seat; 2. intermediate connecting member; 21. ear plate; 22. retaining ring; 23. gripping portion; 24. radial limiting hole; 25. first guide surface; 26. limiting strip; 3. rotating shaft; 4. first fastener; 41. first nut; 42. first bolt; 5. extended suspension rod; 51. extension strip; 52. first sleeve; 53. second sleeve; 6. second fastener; 61. second nut; 62. second bolt; 7. suspension shaft; 71. second guide surface. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1 and Figure 2 , is a super-long exposed main reinforcement prefabricated column hoisting device disclosed in the utility model, comprising a hanging seat 1, a pair of rotating shafts 3 detachably connected to the hoisting through an intermediate connecting piece 2, an extended hanging rod 5 with one end slidingly sleeved on the rotating shaft 3 and locked on the rotating shaft 3 through a first fastener 4, and a hanging shaft 7 slidingly penetrated through the extended hanging rod 5 and locked on the extended hanging rod 5 through a second fastener 6. Among them, the hanging seat 1 is arranged relative to the moving end of the hoisting device, the length direction of the extended hanging rod 5 is respectively perpendicular to the axis center lines of the rotating shaft 3 and the hanging shaft 7, and the axis center lines of the rotating shaft 3 and the hanging shaft 7 are parallel to each other, and the hanging shaft 7 is arranged relative to the hoisting opening of the column lifting ear.

[0034] During the hoisting process, the suspension seat 1 is first fixedly connected to the mobile end of the hoisting equipment, and the rotating shaft 3 is detachably connected to the suspension seat 1 through the intermediate connecting piece 2, so as to adapt the extended suspension rod 5 according to the length of the exposed main reinforcement, and then one end of the corresponding extended suspension rod 5 is sleeved on the rotating shaft 3, and the extended suspension rod 5 is locked on the rotating shaft 3 through the first fastener 4 to achieve the fixation of the extended suspension rod 5 on the rotating shaft 3, and then one end of the suspension shaft 7 is passed through the other end of the extended suspension rod 5 and the hoisting port of the column lifting ear, and the suspension shaft 7 is locked to the extended suspension rod through the second fastener 6 5, so as to realize the fixation of the hanging shaft 7 on the extended hanging rod 5; at the same time, due to the large or small deviations in the installation positions of different column hanging ears, the length direction of the extended hanging rod 5 is perpendicular to the axis lines of the rotating shaft 3 and the hanging shaft 7, and the axis lines of the rotating shaft 3 and the hanging shaft 7 are parallel to each other, so as to fine-tune the position of the extended hanging rod 5 on the rotating shaft 3 according to the position of the column hanging ear; during lifting, the mobile end of the lifting equipment drives the hanging seat 1 to move upward, so that the extended hanging rod 5 drives the column to move upward through the hanging shaft 7 and the hanging ear, and the lifting operation of the column is completed.

[0035] Reference Figure 3The intermediate connecting member 2 includes a pair of ear plates 21 arranged on the hanging seat 1 and through which the rotating shaft 3 passes, a retaining ring 22 and a gripping portion 23 arranged at one end of the rotating shaft 3, a radial limiting hole 24 and a first guide surface 25 opened at the other end of the rotating shaft 3, and a limiting strip 26 tightly inserted in the radial limiting hole 24 and in a U shape. Among them, a first gap for the installation of the extended suspension rod 5 is reserved between the pair of ear plates 21, and the retaining ring 22 and the limiting strip 26 are overlapped on the outer surface of the pair of ear plates 21 respectively. During installation, by using the guiding effect of the first guide surface 25, the end of the rotating shaft 3 close to the radial limiting hole 24 is passed through one of the ear plates 21, the extended suspension rod 5, and the other ear plate 21 in sequence, until the retaining ring 22 overlaps and contacts the surface of one of the ear plates 21, and then the limiting strip 26 is inserted in the radial limiting hole 24 and overlapped on the surface of the other ear plate 21, so as to complete the installation of the rotating shaft 3 on the hanging seat 1. During disassembly, the limiting strip 26 is removed, and the first fastener 4 is loosened and unlocked, so that the rotating shaft 3 can be removed and the extension suspension rod 5 can be disassembled and replaced with a new one.

[0036] Reference Figure 3 and Figure 4 The extension rod 5 includes a pair of extension bars 51, and a first sleeve 52 and a second sleeve 53 respectively inserted at both ends of the extension bars 51. A second gap for installing the column hanging ear is reserved between the pair of extension bars 51, and the first sleeve 52 and the second sleeve 53 are respectively protruded and arranged on the surface of the extension bar 51 away from the second gap. The extension bar 51 not only plays a limiting role on both sides of the column hanging ear, but also can adaptively adjust the width of the second gap by locking and unlocking the first fastener 4 and the second fastener 6 according to the thickness of the column hanging ear, which is conducive to improving the hoisting stability.

[0037] Reference Figure 4 , the first sleeve 52 is sleeved on the rotating shaft 3 with a gap, and is used for the installation of the first fastener 4. The first fastener 4 includes a first nut 41 set on the first sleeve 52, and a first bolt 42 threadedly connected to the first nut 41. The end of the first bolt 42 passes through the first sleeve 52 and tightly contacts the surface of the rotating shaft 3. When installing, first sleeves 52 of the pair of extension strips 51 are sleeved on the rotating shaft 3, and the pair of extension strips 51 are kept at a suitable distance. Then, the first bolt 42 is installed on the first nut 41 by threading, and the first bolt 42 is tightened to make it tightly contact the surface of the rotating shaft 3 to complete the limit. When disassembling, loosen the first bolt 42 to remove the extension strip 51 from the rotating shaft 3.

[0038] The second sleeve 53 is sleeved on the suspension shaft 7 with a gap, and is used for installing the second fastener 6. The two ends of the suspension shaft 7 are respectively provided with second guide surfaces 71. The second fastener 6 includes a second nut 61 provided on the second sleeve 53, and a second bolt 62 threadedly connected to the second nut 61. The end of the second bolt 62 passes through the second sleeve 53 and tightly contacts the surface of the suspension shaft 7. During installation, the suspension shaft 7 passes through the second sleeve 53 of the pair of extension strips 51 and the lifting opening of the column hanging ear in turn by the guiding effect of the second guide surface 71, and the pair of extension strips 51 overlap the two side surfaces of the column hanging ear, and then tighten the second bolt 62 to make it tightly contact the surface of the suspension shaft 7 to complete the limit. During disassembly, the second bolt 62 is loosened to remove the suspension shaft 7 from the column hanging ear.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A hoisting device for prefabricated columns with extra-long exposed main reinforcement, characterized in that: The invention comprises a suspension seat (1), at least two rotating shafts (3) detachably connected to the suspension device via intermediate connecting members (2), an extended suspension rod (5) one end of which is slidably sleeved on the rotating shaft (3) and locked to the rotating shaft (3) via a first fastener (4), and a suspension shaft (7) the other end of which is slidably penetrated through the extended suspension rod (5) and locked to the extended suspension rod (5) via a second fastener (6), wherein the suspension seat (1) is arranged relative to the moving end of the suspension device, the length direction of the extended suspension rod (5) is respectively perpendicular to the axis center lines of the rotating shaft (3) and the suspension shaft (7), and the axis center lines of the rotating shaft (3) and the suspension shaft (7) are parallel to each other, and the suspension shaft (7) is arranged relative to the suspension opening of the column lifting ear.

2. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 1 is characterized in that: The intermediate connecting member (2) comprises a pair of ear plates (21) arranged on the suspension seat (1) and for the rotating shaft (3) to pass through, a retaining ring (22) arranged at one end of the rotating shaft (3), a radial limiting hole (24) opened at the other end of the rotating shaft (3), and a limiting strip (26) tightly inserted into the radial limiting hole (24), and a first gap is reserved between the pair of ear plates (21) for the installation of the extended suspension rod (5), and the retaining ring (22) and the limiting strip (26) are respectively overlapped on the outer surface of the pair of ear plates (21).

3. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 2 is characterized in that: A gripping portion (23) is provided at one end of the rotating shaft (3) close to the retaining ring (22).

4. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 2 is characterized in that: A first guide surface (25) is provided at one end of the rotating shaft (3) close to the limiting strip (26).

5. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 2 is characterized in that: The limiting strip (26) is U-shaped.

6. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 1 is characterized in that: The extension suspension rod (5) comprises a pair of extension bars (51), and a first sleeve (52) and a second sleeve (53) respectively inserted through the two ends of the extension bars (51); a second gap for installing a column hanging ear is reserved between the pair of extension bars (51); the first sleeve (52) is sleeved on the rotating shaft (3) with a gap and is provided for installing the first fastener (4); the second sleeve (53) is sleeved on the suspension shaft (7) with a gap and is provided for installing the second fastener (6).

7. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 6 is characterized in that: The first sleeve (52) and the second sleeve (53) are respectively protrudingly arranged on the surface of the extension strip (51) facing away from the second gap.

8. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 7 is characterized in that: The first fastener (4) comprises a first nut (41) arranged on the first sleeve (52), and a first bolt (42) threadedly connected to the first nut (41), wherein the end of the first bolt (42) passes through the first sleeve (52) and tightly contacts the surface of the rotating shaft (3).

9. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 7, characterized in that: The second fastener (6) comprises a second nut (61) arranged on the second sleeve (53), and a second bolt (62) threadedly connected to the second nut (61), and the end of the second bolt (62) passes through the second sleeve (53) and tightly contacts the surface of the suspension shaft (7).

10. The device for hoisting an extra-long prefabricated column with exposed main reinforcement according to claim 1, characterized in that: Second guide surfaces (71) are respectively provided at both ends of the suspension shaft (7).

Images