CN212924074U

CN212924074U - Non-embedded multifunctional lifting appliance for precast concrete beam

Info

Publication number: CN212924074U
Application number: CN202021651266.XU
Authority: CN
Inventors: 唐雪梅; 詹耀裕
Original assignee: Jiangsu Peifeng Construction Engineering Co ltd
Current assignee: Jiangsu Peifeng Construction Engineering Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-04-09
Anticipated expiration: 2030-08-10

Abstract

The utility model provides a precast concrete beam's no pre-buried multi-functional hoist relates to precast concrete beam including dismantling the hoist subassembly, can dismantle and be equipped with rings on the hoist subassembly, can dismantle the hoist subassembly and establish and fixed mounting the stirrup fastener on the balancing pole including balancing pole and cover, be equipped with on the stirrup fastener with stirrup assorted overlap joint portion on the precast concrete beam. The utility model provides a precast reinforced concrete roof beam is with the pre-buried hoist of multi-functional hoist replacement, under the condition that does not influence precast beam unit structure performance, adjustable with repeatedly usable, the hoist and mount smelting tool that adapts to multiple form precast beam grabs the precast beam stirrup and lifts by crane, has reduced preparation, the construction process of precast reinforced concrete roof beam, and has reduced its production cost of manufacture.

Description

Non-embedded multifunctional lifting appliance for precast concrete beam

Technical Field

The utility model relates to a precast concrete roof beam technical field, in particular to precast concrete roof beam's no pre-buried multi-functional hoist of one kind.

Background

No matter what construction process and structure form are adopted by the reinforced concrete beam as a transverse important stress member of the structure, the structural performance must be met and guaranteed, and on the premise, the prefabricated reinforced concrete beam can be optimally designed according to the manufacturing, construction and cost, so that the maximum economic benefit is exerted. At present, according to special requirements of demoulding, transporting and hoisting in production of general precast reinforced concrete beams, a hoisting sling needs to be pre-embedded when the reinforced concrete beams are precast, namely the pre-embedded hoisting sling is used for demoulding, transporting and hoisting. However, the embedded lifting sling does not play a role in the normal stress stage of the structure, and is only a construction temporary measure which is not detachable in each supporting beam, so that the manufacturing process and the subsequent field construction are more complicated and the manufacturing cost is higher. In the production and installation process of the precast reinforced concrete beam, other iron pieces and stirrups often exist, and the positions of the stirrups, the embedded iron pieces or the embedded lifting slings need to be adjusted, so that an additional production process is added; moreover, when the prefabricated reinforced concrete beam is hoisted and finished and the upper-layer steel bars need to be worn on site, the embedded hoisting tool needs to be cut on site to avoid collision between the steel bars and the embedded hoisting tool, so that extra working hours are increased for installation and construction, and the installation cost is raised.

Based on this, there is an urgent need for a multi-functional hanger that can be reused and adapt to precast concrete beam of many forms without pre-buried.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a precast concrete beam's no pre-buried multi-functional hoist has reduced the preparation process of precast beam and has reduced the cost of manufacture under the prerequisite of guaranteeing structural performance and lifting by crane the security.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a precast concrete roof beam's no pre-buried multi-functional hoist, involves precast concrete roof beam, including dismantling the hoist subassembly, be equipped with rings on the hoist subassembly can be dismantled, can dismantle the hoist subassembly and establish and fixed mounting the stirrup fastener on the balancing pole including balancing pole and cover, be equipped with on the stirrup fastener with stirrup assorted overlap joint portion on the precast concrete roof beam.

Further, the stirrup is a closed hoop or an open hoop or a square hoop.

Furthermore, the overlapping part is an arc clamping groove which is matched with the bent arc corner of the closed hoop, the open hoop or the square hoop and has an angle of 90 degrees or 135 degrees.

Furthermore, the number of the stirrup clamping pieces is two, and the two stirrup clamping pieces are respectively sleeved at the two ends of the balancing rod; the balance bar is provided with a plurality of pin holes distributed at intervals, the stirrup clamping piece is provided with a bolt matched with the pin holes, the hanging ring is a first installation hanging ring with a screw rod arranged at the lower part, and the middle part of the balance bar is provided with a threaded hole matched with the screw rod.

Further, the screw thread cap is further included, and the screw thread cap is matched with the screw rod.

Furthermore, the number of the stirrup clamping pieces is two, and the two stirrup clamping pieces are respectively sleeved at the two ends of the balancing rod; the balance bar is provided with a plurality of threaded holes distributed at intervals, the stirrup clamping piece is provided with jacks matched with the threaded holes, the number of the lifting rings is two, the two lifting rings are second installation lifting rings with screw rods arranged on the lower portions, and the screw rods are matched with the jacks and the threaded holes.

Furthermore, when the precast concrete beam is a precast reinforced concrete frame beam, the structural member at the beam end comprises a beam lower layer longitudinal bar outlet section, integral closed hoops at two ends of the structural beam and an open hoop at the middle section, and the multifunctional lifting appliance can be clamped on the closed hoops and the open hoops at two ends of the structural beam between 0.20 times of the beam length and 0.25 times of the beam length.

Furthermore, when the precast concrete beam is a precast reinforced concrete secondary beam, the beam end comprises a cattle arm plate used for being connected with the girder, integral closed hoops at two ends of the structural beam and an open hoop at the middle section, and the multifunctional lifting appliance can be clamped on the closed hoops and the open hoops at two ends of the structural beam, wherein the beam length is 0.20 times to 0.25 times of the beam length.

Further, the balancing pole is a solid rectangular pole or a rectangular through pipe.

Has the advantages that:

(1) the utility model discloses the hoist can infinitely time used repeatedly in design load within range, can be in the precast beam drawing of patterns, use in transportation and the on-the-spot hoist and mount. The use in many occasions makes hoist use cost greatly reduced.

(2) The utility model discloses the hoist is according to the wide adjustment of different roof beams, and the commonality is strong, also makes use cost greatly reduced.

(3) The utility model discloses the hoist need not be pre-buried in the prefabricated construction roof beam, and the hoist adapts to the multiple width prefabricated construction roof beam unit of multiple stirrup form, and prefabricated construction roof beam unit stirrup can be opening hoop or combination hoop of closing. The hoisting sling can be repeatedly used, and the outer leakage stirrups between 0.20 times and 0.25 times of the beam length at the two ends of the structural beam are grabbed; when the structural beam is lifted, the sling is vertical to the structural beam unit.

(4) The utility model discloses a pre-buried hoist of multi-functional hoist replacement precast reinforced concrete roof beam need not pre-buried hoist of lifting by crane in precast beam preparation stage, is guaranteeing structural performance and lifts by crane under the prerequisite of security, has reduced precast beam's preparation process and has reduced the cost of manufacture.

(5) Use the utility model discloses a precast concrete beam of multi-functional hoist has reduced the possibility of hoisting hoist and stirrup or other pre-buried ironware collisions in prefabricated preparation stage because of need not pre-buried hoist of lifting by crane, and has reduced the process that need cut the hoist for avoiding reinforcing bar and pre-buried hoist collision when wearing upper reinforcing bar in follow-up scene, makes preparation and construction more convenient rapid.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a multi-functional sling without a pre-buried concrete beam including a first installation lifting ring according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a multi-functional sling without embedded structure for a precast concrete beam including two second installation lifting rings according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a first installation hanging ring according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a second mounting ring according to an embodiment of the present invention;

FIG. 5 is a schematic view of a prefabricated reinforced concrete frame beam without an embedded hanger;

FIG. 6 is a schematic view of a prefabricated reinforced concrete secondary beam without an embedded hanger;

FIG. 7 is a schematic view of the lifting of a prefabricated reinforced concrete frame beam gripping closed hoop without an embedded lifting appliance;

FIG. 8 is a schematic diagram of the lifting of a prefabricated reinforced concrete secondary beam gripping closed hoop without an embedded lifting appliance;

FIG. 9 is a schematic view of a continuous square hoop hoisting node gripped by a precast reinforced concrete beam without an embedded spreader;

fig. 10 is a schematic view of a general precast reinforced concrete beam pre-embedded hanger;

FIG. 11 is a schematic diagram of a structure of a pre-buried multifunctional hanger (including a first mounting lifting ring) for a precast concrete beam, and a structure of a matched mounting structure of an open hoop and a closed hoop;

fig. 12 is a schematic diagram of a matching installation structure of a pre-buried multifunctional lifting appliance (comprising two second installation lifting rings) of a precast concrete beam, an open hoop and a closed hoop.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 10 is a schematic diagram of a general precast reinforced concrete beam embedded lifting appliance, the embedded lifting appliance 8 does not work in the normal stress stage of the structure, and only is a construction temporary measure which is not detachable in each supporting beam, and the manufacturing process and the subsequent field construction are complicated and the manufacturing cost is high. In the production and installation process of the precast reinforced concrete beam, other iron parts and stirrups often exist, and the positions of the stirrups, the embedded iron parts or the embedded lifting sling need to be adjusted, so that an additional production process is added.

Example 1

Based on the above drawbacks of the prior art, see fig. 1-9: this embodiment provides a precast concrete beam's non-pre-buried multi-functional hoist, involves precast concrete beam 4, including dismantling hoist subassembly 1, be equipped with rings 11 on dismantling hoist subassembly 1, can dismantle hoist subassembly 1 and establish and fixed mounting stirrup fastener 14 on balancing pole 12 including balancing pole 12 and cover, be equipped with on stirrup fastener 14 with stirrup assorted overlap joint 141 on precast concrete beam 4.

The detachable lifting appliance assembly of the embodiment is fixed on a closed hoop or an open hoop of the precast concrete beam through the overlapping part of the stirrup clamping piece so as to hold the precast concrete beam; the precast concrete beam of the embodiment does not need a conventional embedded lifting appliance.

The embodiment provides that precast reinforced concrete roof beam replaces pre-buried hoist with multi-functional hoist, under the condition that does not influence precast beam unit structure performance, with repeatedly usable adjustable, adapts to the hoist and mount smelting tool of multiple form precast beam, grabs precast beam stirrup and lifts by crane, has reduced preparation, the construction process of precast reinforced concrete roof beam, and has reduced its production cost of manufacture.

See fig. 7-9: the stirrup is a closed hoop 2 or an open hoop 3 or a square hoop, and the overlapping part 141 is an arc clamping groove which is matched with the bent angle part of the closed hoop 2 or the open hoop 3 or the square hoop and has an angle of 90 degrees or 135 degrees.

Through 90 degrees or 135 degrees arc draw-in grooves with the curved arc bight assorted of opening hoop or closed hoop, when the hoist was used, hoist fastener and stirrup can fully contact, effectively improve the homogeneity of atress.

Referring to fig. 1, 3, 11: in a specific example, the number of the stirrup clamping pieces 14 is two, and the two stirrup clamping pieces 14 are respectively sleeved at two ends of the balance bar 12; the balance bar 12 is provided with a plurality of pin holes 13 distributed at intervals, the stirrup clamping piece 14 is provided with a bolt 15 matched with the pin holes 13, the hanging ring 11 is a first installation hanging ring with a screw rod 111 arranged at the lower part, and the middle part of the balance bar 12 is provided with a threaded hole matched with the screw rod 111.

The two stirrup clamping pieces of the embodiment can be fixedly positioned by inserting the inserted pins into the pin holes, and in addition, the pin holes are distributed on the balancing rod at intervals, so that the distance between the two stirrup clamping pieces of the embodiment can be adjusted, and the two stirrup clamping pieces can be matched with closed hoops or open hoops with more calibers; this embodiment can lift by crane through the first installation rings in balancing pole middle part, and the stability of lifting by crane is better.

Preferably, the screw-thread device further comprises a screw-thread cap 112, wherein the screw-thread cap 112 is matched with the screw 111.

The threaded cap is arranged at the bottom of the screw rod, so that the screw rod and the balance rod are effectively prevented from falling off, and the lifting safety is improved.

Referring to fig. 2, 4, 12: in a specific example, the number of the stirrup clamping pieces 14 is two, and the two stirrup clamping pieces 14 are respectively sleeved at two ends of the balance bar 12; the balance bar 12 is provided with a plurality of threaded holes 16 distributed at intervals, the stirrup clamping piece 14 is provided with jacks matched with the threaded holes 16, the number of the two lifting rings 11 is two, the two lifting rings are second installation lifting rings provided with screws 111 at the lower parts, and the screws 111 are matched with the jacks and the threaded holes 16.

This embodiment is the same basically with foretell hoist structure, and the difference lies in this embodiment to lift by crane through two second installation rings of installing on stirrup fastener and balancing pole, lifts by crane the atress more evenly, and stability is better.

Referring to fig. 5, 7: specifically, when the precast concrete beam 4 is a precast reinforced concrete frame beam, the structural member at the beam end comprises a beam lower layer longitudinal bar outlet section 5, integral closed hoops 2 at two ends of the structural beam and an open hoop 3 at the middle section, and the multifunctional lifting appliance can be clamped on the closed hoops 2 and the open hoops 3 between 0.20 times and 0.25 times of the beam length at two ends of the structural beam.

Referring to fig. 6 and 8: specifically, when the precast concrete beam 4 is a precast reinforced concrete secondary beam, the beam end comprises a bracket arm plate 6 for being connected with a girder, integral closed hoops 2 at two ends of the structural beam and an open hoop 3 at the middle section, and the multifunctional lifting appliance can be clamped on the closed hoops 2 and the open hoops 3 between 0.20 times and 0.25 times of the length of the beam at two ends of the structural beam.

No matter the precast concrete beam is a frame beam or a secondary beam, no pre-embedded lifting sling is arranged, and when the precast concrete beam is lifted, a reusable detachable sling component can be used for grasping a closed hoop or an open hoop between 0.20 times of beam length and 0.25 times of beam length at two ends of the structural beam.

Preferably, the balance bar 12 is a solid rectangular bar or a rectangular through pipe.

When the hoop is grabbed and lifted, the reinforcing steel bars can be kept stressed in the original shape, so that the hoop cannot be arched and deformed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a precast concrete roof beam's multi-functional hoist of no pre-buried, involves precast concrete roof beam (4), its characterized in that, including dismantling hoist subassembly (1), be equipped with rings (11) on dismantling hoist subassembly (1), can dismantle hoist subassembly (1) establish and fixed mounting stirrup fastener (14) on balancing pole (12) including balancing pole (12) and cover, be equipped with on stirrup fastener (14) with stirrup assorted overlap joint (141) on precast concrete roof beam (4).

2. The multi-functional sling without pre-buried concrete beam as recited in claim 1, wherein the stirrup is a closed hoop (2), an open hoop (3) or a square hoop.

3. The multi-functional sling without pre-buried concrete beam as recited in claim 2, wherein the overlapping portion (141) is an arc-shaped slot of 90 ° or 135 ° matching with the bent corner of the closed hoop (2), the open hoop (3) or the square hoop.

4. The multi-functional sling without embedded concrete beam as recited in claim 1, wherein the number of the stirrup clamping members (14) is two, and the two stirrup clamping members (14) are respectively sleeved at two ends of the balancing pole (12); be equipped with a plurality of interval distribution's pinhole (13) on balancing pole (12), be equipped with bolt (15) that matches with pinhole (13) on stirrup fastener (14), rings (11) are the first installation rings that the lower part was equipped with screw rod (111), balancing pole (12) middle part is equipped with the screw hole with screw rod (111) assorted.

5. The multi-functional sling without pre-buried concrete beam as recited in claim 3, further comprising a screw cap (112), wherein the screw cap (112) is matched with the screw (111).

6. The multi-functional sling without embedded concrete beam as recited in claim 1, wherein the number of the stirrup clamping members (14) is two, and the two stirrup clamping members (14) are respectively sleeved at two ends of the balancing pole (12); the balance bar is characterized in that a plurality of threaded holes (16) distributed at intervals are formed in the balance bar (12), jacks matched with the threaded holes (16) are formed in the stirrup clamping piece (14), two lifting rings (11) are used and are second installation lifting rings provided with screw rods (111) at the lower parts, and the screw rods (111) are matched with the jacks and the threaded holes (16).

7. The precast concrete beam non-embedded multifunctional lifting appliance according to claim 1, wherein when the precast concrete beam (4) is a precast reinforced concrete frame beam, the beam-end structural member comprises a beam lower layer longitudinal bar outlet section (5), a structural beam two-end integral closed hoop (2) and a middle section open hoop (3), and the multifunctional lifting appliance can be clamped on the closed hoop (2) and the open hoop (3) between 0.20 times and 0.25 times of the beam length at two ends of the structural beam.

8. The pre-buried multifunctional lifting appliance of the precast concrete beam as claimed in claim 1, wherein when the precast concrete beam (4) is a precast reinforced concrete secondary beam, the beam end comprises a bracket board (6) for being jointed with a girder, an integral closed hoop (2) at two ends of the structural beam and an open hoop (3) at the middle section, and the multifunctional lifting appliance can be held on the closed hoop (2) and the open hoop (3) between 0.20 times and 0.25 times of the length of the beam at two ends of the structural beam.

9. The multi-functional sling without pre-buried concrete beam as recited in claim 1, wherein the spreader beam (12) is a solid rectangular bar or a rectangular tube.