Stand column hoisting shaft

Abstract

The utility model relates to an upright post hoisting shaft, which comprises a hoisting hole, a hoisting shaft, and two groups of check rings and lock nuts, the hoisting shaft comprises a polished shaft section positioned in the center, and a shaft shoulder section and a threaded shaft section which are symmetrically arranged on the two sides of the polished shaft section, and the hoisting hole is formed in the upright post in a manner of being vertical to the length direction of the upright post; the polished shaft section is arranged on the hoisting hole in a penetrating mode in a clearance mode, the diameter of the polished shaft section is larger than that of the threaded shaft section, and the lock nut is connected to the threaded shaft section in a threaded mode so that the axial end face of the shaft shoulder section, the axial end face of the check ring and the axial end face of the lock nut can abut against one another in sequence. The lifting hole, the lifting shaft, the two groups of check rings and the lock nuts are detachably connected, so that the defect of high construction cost of an original embedded plate type lifting lug is directly avoided, the lifting lug is convenient to reuse, and meanwhile, the lifting hole, the polished shaft section and the lifting cable are rotatably connected and are limited by the check rings and the like, so that the lifting lug is convenient to use. And the upright hoisting shaft is uniformly stressed on the front and rear sides of the upright post and is not easy to deform, so that the field installation precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete prefabricated column hoisting, in particular to a column hoisting shaft. 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] A Chinese patent with authorization announcement number CN218619794U discloses a special hanger for prefabricated columns based on UHPC connection, including a base plate, two opposite vertical plates are arranged on the base plate, the vertical plates are provided with pin holes, and a plurality of anchor holes are arranged on the base plate, and the anchor holes are evenly distributed on both sides of the vertical plates; a detachable pin is passed through the pin hole, a limiting hole is arranged on the pin, and the limiting hole is detachably provided with a limiting column matching the pin hole.

[0004] The above-mentioned existing technical solutions have the following defects: the above-mentioned lifting equipment uses vertical plates and pin shafts to form plate-type lifting ears, so that the lifting machinery can use the tower crane on site. For a small number of prefabricated columns, the use of embedded plate-type lifting ears for lifting has the advantages of simple design and easy operation. However, for a large number of prefabricated columns with the same specifications and models, if the pre-embedded plate-type lifting ears are still used for lifting, the amount of temporary materials is huge, which will increase the construction cost; in addition, before and after the loading and unloading of the prefabricated columns, the columns must complete the switching between the vertical state and the horizontal state. The two plate-type lifting ears are lifted by slings, and the vertical plates on the upper and lower sides have a large force difference and are easy to deform. The deformation of the vertical plates will directly affect the on-site installation of the columns, which needs to be improved. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a column lifting shaft in view of the above-mentioned deficiencies existing in the prior art, which solves the problems of increased construction cost of the embedded plate lifting ears and easy deformation before and after loading and unloading in the existing column lifting structure, and has the advantages of easy reuse, uniform force on both sides before and after loading and unloading, and not easy to deform.

[0006] The above utility model object of the utility model is achieved through the following technical solutions:

[0007] A column hanging shaft comprises a hanging hole, a hanging shaft, and two sets of retaining rings and lock nuts. The hanging shaft comprises an optical axis section located at the center, and a shoulder section and a threaded shaft section symmetrically arranged on both sides of the optical axis section. The hanging hole is opened on the column in a manner perpendicular to the length direction of the column. The optical axis section is gap-pierced through the hanging hole, and the diameter of the optical axis section is greater than the diameter of the threaded shaft section. The lock nut is threadedly connected to the threaded shaft section to complete the sequential interference between the axial end faces of the shoulder section, retaining ring and lock nut.

[0008] By adopting the above technical solution, with the length direction of the column as the vertical direction, the lifting hole is pre-opened horizontally on the column when the column concrete is poured. During the lifting process, it is only necessary to pre-loosen the retaining ring and lock nut at one end of the hanging shaft, pass the hanging shaft through the lifting hole, and the shoulder section and the threaded shaft section pass to the outside of the lifting hole, and then tighten the retaining ring and lock nut to complete the two-to-two interference between the axial end faces of the shoulder section, the retaining ring and the lock nut; at this time, a gap is reserved between the retaining ring and the side wall of the column, that is, the section where the optical shaft section is exposed outside the column, and the two ends of the sling are installed separately. After the two ends of the optical axis section are connected, the lifting operation can be carried out; when the column needs to complete the switch between the vertical state and the horizontal state, the end of the sling can rotate along the circumference of the optical axis section, so that the force can be dispersed to the peripheral wall of the optical axis section, and then the force is evenly applied through the interference between the optical axis section and the lifting hole of the column, so that the force difference of each section of the column lifting axis is finally small, and it is not easy to deform, which is conducive to ensuring the accuracy of on-site installation; in addition, after the lifting is completed, the column lifting axis can be removed again by loosening the retaining ring and lock nut at one end of the lifting axis, which has the advantage of easy reuse.

[0009] The utility model is further configured as follows: the maximum diameter of the hanging shaft is 100-120 mm, the straightness is ≤0.5 mm, and the difference between the diameters of the optical shaft section and the threaded shaft section is 5-10 mm.

[0010] By adopting the above technical solution, the maximum diameter of the hanging shaft is the diameter of the optical axis section. The hanging shaft is made of 3030CrMnTi material. By controlling its size, it is possible to control the production cost while ensuring the hanging stability and avoiding the deformation of the hanging shaft.

[0011] The utility model is further configured as follows: the difference in length between the optical axis section and the hoisting hole is 230-250 mm.

[0012] By adopting the technical solution, the installation of the sling is facilitated.

[0013] The utility model is further configured as follows: the surface of the shaft shoulder section is configured as a conical surface.

[0014] The adoption of the above technical solution is helpful to balance the force generated by the surface interference between the retaining ring and the shaft shoulder section.

[0015] The utility model is further configured as follows: the spiral directions of the two threaded shaft sections are opposite.

[0016] By adopting the above technical solution, it is convenient to install two sets of lock nuts on the threaded shaft section, and the thread matching clearance between the threaded shaft and the lock nut is set according to the national standard requirements.

[0017] The utility model is further configured as follows: the difference between the diameters of the retaining ring and the threaded shaft section is 190-200 mm.

[0018] By adopting the above technical solution, the retaining ring and the lock nut are made of 40GrMn material, and the installation stability of the sling can be ensured by controlling their dimensions.

[0019] The utility model is further configured as follows: a guide surface is provided at the end of the threaded shaft.

[0020] By adopting the above technical solution, the guide surface is used to guide the lock nut to be threadedly connected to the threaded shaft.

[0021] The utility model is further configured as follows: a pin hole is provided on the end surface of the threaded shaft.

[0022] By adopting the above technical solution, since the lifting shaft is constantly subjected to the friction and pressure generated by the rotation of the sling during the lifting process, the pin hole can facilitate the heat dissipation of the lifting shaft and reduce the load, which can control the production cost while ensuring the lifting stability and avoiding deformation of the lifting shaft.

[0023] The utility model is further configured as follows: a first guide cone surface is provided at an opening end of the lock nut close to the retaining ring, a second guide cone surface is provided at an opening end of the lock nut away from the retaining ring, and a length of the first guide cone surface is smaller than that of the second guide cone surface.

[0024] By adopting the above technical solution, good stability is achieved.

[0025] The utility model is further configured as follows: the included angles of the first guide cone surface and the second guide cone surface are independently set to 60-120 degrees.

[0026] By adopting the above technical solution, good stability is achieved.

[0027] To sum up, the beneficial technical effect of the utility model is as follows: by setting the lifting holes, lifting shafts, and two sets of retaining rings and lock nuts as a detachable connection form, the defect of high construction cost of the original pre-embedded plate lifting ears is directly avoided, which is convenient for reuse. At the same time, by setting the lifting holes, optical axis sections and lifting cables as a rotating connection form and using retaining rings etc. for limiting the position, the column lifting shaft is evenly stressed on both sides before and after the column loading and unloading and is not easy to deform, which is beneficial to ensure the on-site installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a column hoisting shaft of the utility model.

[0029] Figure 2 yes Figure 1 Section view of the AA plane.

[0030] Figure 3 It is a structural schematic diagram of the suspension shaft of the utility model.

[0031] Figure 4 It is a structural schematic diagram of the lock nut of the utility model.

[0032] In the figure, 1, lifting hole; 2, hanging shaft; 21, smooth shaft section; 22, shaft shoulder section; 23, threaded shaft section; 231, pin hole; 232, guide surface; 3, retaining ring; 4, lock nut; 41, first guide cone surface; 42, second guide cone surface. DETAILED DESCRIPTION

[0033] 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.

[0034] Reference Figure 1 and Figure 2 , is a column hoisting shaft disclosed in the utility model, comprising a hoisting hole 1, a hanging shaft 2, and two sets of retaining rings 3 and lock nuts 4. Among them, the hoisting hole 1 is opened on the column in a manner perpendicular to the length direction of the column, the hanging shaft 2 is penetrated through the hoisting hole 1, and both ends are located outside the hoisting hole 1, so that the sling is fixed, and the two sets of retaining rings 3 and lock nuts 4 are respectively installed and detached at both ends of the hanging shaft 2 by threaded connection, so as to limit the sling. By setting the hoisting hole 1, the hanging shaft 2, and the two sets of retaining rings 3 and lock nuts 4 as a detachable connection form, the defect of high construction cost of the original embedded plate type lifting ear is directly avoided, and it is convenient for reuse. At the same time, by setting the hoisting hole 1, the hanging shaft 2 and the sling as a rotating connection form, and assisting with retaining rings 3 and the like for limiting, the column hoisting shaft is subjected to uniform force on both sides before and after the column is loaded and unloaded, and is not easy to deform, which is conducive to ensuring the accuracy of on-site installation.

[0035] Reference Figure 3The hanging shaft 2 includes an optical shaft section 21 located in the center, and a shoulder section 22 and a threaded shaft section 23 symmetrically arranged on both sides of the optical shaft section 21. The optical shaft section 21 is intermittently penetrated on the hanging hole 1, and the surface of the shoulder section 22 is set as a conical surface. The spiral directions of the two threaded shaft sections 23 are opposite, and a pin hole 231 is opened on the end face of the threaded shaft. In addition, the maximum diameter of the hanging shaft 2 is 110mm, the straightness is ≤0.5mm, and the difference between the diameter of the optical shaft section 21 and the threaded shaft section 23 is 5mm, and the difference between the length of the optical shaft section 21 and the hanging hole 1 is 240mm. The hanging shaft 2 is made of 3030CrMnTi material. By controlling its size, it can control the production cost while ensuring the hanging stability and avoiding the deformation of the hanging shaft.

[0036] Ginseng Figure 2 and Figure 4 The lock nut 4 is threadedly connected to the threaded shaft section 23 to complete the sequential interference between the axial end faces of the shaft shoulder section 22, the retaining ring 3 and the lock nut 4. The difference between the diameters of the retaining ring 3 and the threaded shaft section 23 is 195 mm. In addition, for ease of installation, a guide surface 232 is provided at the end of the threaded shaft, a first guide cone surface 41 is provided at the open end of the lock nut 4 close to the retaining ring 3, and a second guide cone surface 42 is provided at the open end of the lock nut 4 away from the retaining ring 3. The length of the first guide cone surface 41 is smaller than that of the second guide cone surface 42, and the angles between the first guide cone surface 41 and the second guide cone surface 42 are independently set to 90°.

[0037] The implementation principle of this embodiment is as follows: with the length direction of the column as the vertical direction, the hoisting hole 1 is pre-opened horizontally on the column when the column concrete is poured. During the hoisting process, it is only necessary to pre-loosen the retaining ring 3 and the lock nut 4 at one end of the hanging shaft 2, pass the hanging shaft 2 through the hoisting hole 1, and the shoulder section 22 and the threaded shaft section 23 are passed to the outside of the hoisting hole 1, and then tighten the retaining ring 3 and the lock nut 4 to complete the two-to-two interference between the axial end faces of the shoulder section 22, the retaining ring 3 and the lock nut 4; at this time, a gap is reserved between the retaining ring 3 and the side wall of the column, that is, the section where the optical shaft section 21 is exposed to the outside of the column, and the two ends of the sling are After being respectively installed at the two ends of the optical axis section 21, the lifting operation can be carried out; when the column needs to complete the switch between the upright state and the horizontal state, the end of the sling can rotate along the circumference of the optical axis section 21, so that the force can be dispersed to the peripheral wall of the optical axis section 21, and then the force is evenly applied through the interference between the optical axis section 21 and the lifting hole 1 of the column, so that the force difference of each section of the column lifting shaft is finally small, and it is not easy to deform, which is conducive to ensuring the accuracy of on-site installation; in addition, after the lifting is completed, the column lifting shaft can be removed again by loosening the retaining ring 3 and the lock nut 4 at one end of the lifting shaft 2, which has the advantage of easy reuse.

[0038] 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 column hoisting shaft, characterized in that: The invention comprises a hanging hole (1), a hanging shaft (2), and two sets of retaining rings (3) and a lock nut (4); the hanging shaft (2) comprises an optical axis section (21) located at the center, and a shaft shoulder section (22) and a threaded shaft section (23) symmetrically arranged on both sides of the optical axis section (21); the hanging hole (1) is opened on the column in a manner perpendicular to the length direction of the column; the optical axis section (21) is interspaced and penetrated through the hanging hole (1); the diameter of the optical axis section (21) is larger than the diameter of the threaded shaft section (23); the lock nut (4) is threadedly connected to the threaded shaft section (23) to complete the sequential interference between the axial end faces of the shaft shoulder section (22), the retaining ring (3) and the lock nut (4).

2. The column hanging shaft according to claim 1, characterized in that: The maximum diameter of the suspension shaft (2) is 100-120 mm, the straightness is ≤0.5 mm, and the difference between the diameters of the optical shaft section (21) and the threaded shaft section (23) is 5-10 mm.

3. The column hanging shaft according to claim 1, characterized in that: The difference between the length of the optical axis section (21) and the lifting hole (1) is 230-250 mm.

4. The column hanging shaft according to claim 1, characterized in that: The surface of the shaft shoulder section (22) is configured as a conical surface.

5. The column hanging shaft according to claim 1, characterized in that: The spiral directions of the two threaded shaft sections (23) are opposite.

6. The column hanging shaft according to claim 1, characterized in that: The difference between the diameters of the retaining ring (3) and the threaded shaft section (23) is 190-200 mm.

7. The column hanging shaft according to claim 1, characterized in that: The end of the threaded shaft is provided with a guide surface (232).

8. The column hanging shaft according to claim 1, characterized in that: The end surface of the threaded shaft is provided with a pin hole (231).

9. The column hanging shaft according to claim 1, characterized in that: The lock nut (4) is provided with a first guide conical surface (41) at the open end close to the retaining ring (3), and the lock nut (4) is provided with a second guide conical surface (42) at the open end away from the retaining ring (3), and the length of the first guide conical surface (41) is smaller than that of the second guide conical surface (42).

10. The column hanging shaft according to claim 9, characterized in that: The included angles of the first guide conical surface (41) and the second guide conical surface (42) are independently set to be 60-120 degrees.

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