Hoisting structure for hoisting steel beam from window of existing structure and hoisting method thereof

Abstract

The invention discloses a hoisting structure for hoisting a steel beam from a window of an existing structure and a hoisting method of the hoisting structure. The hoisting structure comprises hoisting equipment for hoisting the steel beam to the window; the two sliding seats are used for protecting the bottom edge of the window and are detachably connected to the bottom edge of the window; the sliding plate is used for allowing a steel beam to slide from the outdoor to the indoor and movably supported on the tops of the two sliding seats, the first end of the sliding plate is located indoors, a telescopic piece used for controlling the inclination angle of the sliding plate is connected between the bottom of the first end of the sliding plate and an existing floor, and the second end of the sliding plate is located outdoors; the second end of the sliding plate extends obliquely upwards and forms a connecting and guiding section used for connecting and guiding a steel beam. The hoisting structure is arranged, so that the hoisting stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a hoisting structure for hoisting a steel beam from a window of an existing structure and a hoisting method thereof. Background Art

[0002] After the construction is completed, due to the change of business format, the use function and structural stress change, the original building space and layout cannot meet the new use requirements, so demolition and reinforcement become necessary means of building renovation. The organic combination of demolition and reinforcement construction will give the original building a new lease of life, which is bound to become the mainstream in the construction industry in the future. In the process of reinforcing the original building, the steel beam reinforcement construction method is often used. The steel beam material is long and cannot be transported vertically by the existing manned elevator. The material can only be transported into the room through the door and window openings.

[0003] As attached Figure 1 and attached Figure 2 As shown, the traditional lifting method is to set up a scaffolding platform 4 near the window in the room, so that the scaffolding platform 4 is set up on the bottom edge of the window, and a lifting hoist 3 is installed indoors to cooperate with the outdoor lifting equipment 1 to pull the steel beam 2 into the room. This method has the following disadvantages: when the steel beam 2 contacts the scaffolding platform 4 from a high altitude by lifting, the horizontality of the steel beam 2 must be strictly controlled, and the technical requirements for the operator of the lifting equipment 1 are relatively high. When entering the window, manual guidance is required, and the risk of falling from a height is high; after receiving the load of the steel beam 2, the scaffolding platform 4 has a certain degree of compression on the bottom edge of the window, and under poor control, the steel beam 2 is prone to swinging left and right, which leads to a high probability of damage to the original window frame or structure; after the steel beam 2 enters the scaffolding platform 4, it needs to be slowly pulled by the hand-pulled lifting hoist 3. When the steel beam 2 reaches the balance point and is ready to enter the indoor transportation equipment 5, it is easy to slip for a moment. If it is not properly protected, it is very easy to damage the floor and cause personal injury. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a hoisting structure and a hoisting method for hoisting a steel beam from a window of an existing structure, thereby improving the stability of the steel beam hoisting and avoiding damage to the existing structure.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is a hoisting structure for hoisting a steel beam from a window of an existing structure, comprising:

[0006] Lifting equipment for lifting the steel beam to the window;

[0007] Two sliding seats for protecting the bottom edge of the window, the two sliding seats being detachably connected to the bottom edge of the window;

[0008] A slide plate is provided for the steel beam to slide from the outdoors to the indoors, the slide plate is movably supported on the top of the two sliding seats, the first end of the slide plate is located indoors, a telescopic member for controlling the inclination angle of the slide plate is connected between the bottom of the first end of the slide plate and the existing floor slab, the second end of the slide plate is located outdoors, the second end of the slide plate extends obliquely upward and forms a connecting section for connecting the steel beam.

[0009] The present invention further improves the hoisting structure of the steel beam from the window of the existing structure in that a plurality of electromagnets for slowing down the sliding speed of the steel beam are connected to the top of the slide plate at intervals along the sliding direction of the steel beam.

[0010] The present invention further improves the lifting structure of the window lifting steel beam of the existing structure in that the sliding seat includes an inverted U-shaped support ring, and the relative inner sides of the two flange plates of the inverted U-shaped support ring are connected with suction cups for respectively connecting to the inner and outer sides of the bottom wall of the window, and the slide plate is movably supported on the top of the inverted U-shaped support ring.

[0011] A further improvement of the hoisting structure of the steel beam from the window of the existing structure of the present invention is that the cross section of the slide plate along the sliding direction perpendicular to the steel beam is V-shaped.

[0012] The present invention further improves the hoisting structure of the steel beam from the window of the existing structure in that the telescopic member includes a hydraulic rod, the top end of the hydraulic rod is hingedly connected to the slide plate, and the bottom end of the hydraulic rod is fixedly connected to the existing floor.

[0013] The present invention further improves the hoisting structure of the steel beam from the window of the existing structure in that a hoisting point for connecting the hoisting rope of the hoisting equipment is provided on the steel beam, and the hoisting point is arranged away from the center of gravity of the steel beam.

[0014] The present invention further improves the hoisting structure of the steel beam from the window of the existing structure in that a baffle for preventing the steel beam from slipping is detachably connected to the top of the first end of the slide plate.

[0015] A method for hoisting a steel beam from a window of an existing structure comprises the steps of:

[0016] Step 1: Provide the above-mentioned lifting structure for lifting the steel beam from the window of the existing structure and install it in place;

[0017] Step 2: Use lifting equipment to lift the steel beam to the window;

[0018] Step 3: Bring one end of the steel beam close to and over the guide section, slowly lower the steel beam, and make the steel beam slide along the slide plate into the room;

[0019] Step 4: When the steel beam stops sliding and has not reached the first end of the slide plate, the telescopic member is controlled to shorten so that the steel beam slides further into the room until it reaches the first end of the slide plate and is received by the room.

[0020] The present invention provides a further improvement in the method for hoisting a steel beam from a window of an existing structure, wherein a lifting point for connecting a lifting rope of the hoisting device is provided on the steel beam, and the lifting point is arranged away from the center of gravity of the steel beam;

[0021] When executing the above step 3, the relatively downwardly inclined end of the steel beam is brought close to and placed on the connecting section.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. The steel beam is guided by setting an upwardly inclined guiding section so that the steel beam can slide automatically from the outside to the inside.

[0024] 2. By setting the telescopic parts to control the inclination angle of the slide plate, it is convenient to further control the sliding of the steel beam without the need for additional traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of lifting the steel beam from the window in the traditional lifting method;

[0027] Figure 2 It is a schematic diagram of the transfer of steel beams to indoor transportation equipment in the traditional lifting method;

[0028] Figure 3 It is a side view of the present invention in use state;

[0029] Figure 4 It is a front view of the present invention in use state;

[0030] Figure 5 It is a structural schematic diagram of the sliding seat of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the telescopic member of the present invention;

[0032] Figure 7 It is a schematic diagram of the contact between the steel beam and the connecting section of the present invention;

[0033] Figure 8It is a schematic diagram of the steel beam of the present invention sliding to a balance point;

[0034] Fig. 9 It is a schematic diagram of the steel beam sliding to the baffle of the present invention;

[0035] Fig.10 It is a schematic diagram of the steel beam of the present invention sliding to the indoor transportation equipment;

[0036] In the figure: 1. lifting equipment; 2. steel beam; 3. lifting hoist; 4. scaffolding platform; 5. indoor transportation equipment; 6. slide plate; 7. sliding seat; 701. inverted U-shaped support ring; 702. suction cup; 8. connecting section; 9. electromagnet; 10. hydraulic rod; 11. lateral support; 12. anchor bolt; 13. baffle. DETAILED DESCRIPTION

[0037] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] The hoisting structure and hoisting method for hoisting a steel beam from a window of an existing structure of the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] See also Figures 3 to 10 As shown, the hoisting structure for hoisting the steel beam from the window of the existing structure includes:

[0040] A lifting device 1 for lifting a steel beam 2 to a window;

[0041] Two sliding seats 7 for protecting the bottom edge of the window, the two sliding seats 7 are detachably connected to the bottom edge of the window;

[0042] A slide plate 6 is provided for the steel beam 2 to slide from outdoors to indoors, and the slide plate 6 is movably supported on the top of the two sliding seats 7. The first end of the slide plate 6 is located indoors, and a telescopic member for controlling the inclination angle of the slide plate 6 is connected between the bottom of the first end of the slide plate 6 and the existing floor slab. The second end of the slide plate 6 is located outdoors, and the second end of the slide plate 6 extends obliquely upward and forms a connecting section 8 for connecting the steel beam 2.

[0043] Specifically, in the initial state of the slide plate 6, the non-connecting section of the slide plate 6 is in a horizontal state.

[0044] By providing the telescopic member, the non-guided section of the slide plate 6 is inclined relatively toward the indoor room, so that the steel beam 2 can slide automatically from the outdoor room to the indoor room.

[0045] Preferably, a plurality of electromagnets 9 for slowing down the sliding speed of the steel beam 2 are connected to the top of the slide plate 6 at intervals along the sliding direction of the steel beam 2 .

[0046] By providing the electromagnet 9 , when the steel beam 2 slides on the slide plate 6 , the sliding speed of the steel beam 2 is slowed down, so that the sliding of the steel beam 2 is kept within a controllable speed, thereby avoiding direct sliding off the slide plate 6 .

[0047] Preferably, the sliding seat 7 includes an inverted U-shaped support ring 701, and the relative inner sides of the two flange plates of the inverted U-shaped support ring 701 are connected with suction cups 702 for connecting to the inner and outer sides of the bottom wall of the window respectively, and the slide plate 6 is movably supported on the top of the inverted U-shaped support ring 701.

[0048] By providing the inverted U-shaped support ring 701, it is avoided that the slide plate 6 is directly supported on the window to cause extrusion damage to the window.

[0049] Preferably, the cross section of the slide plate 6 along the sliding direction perpendicular to the steel beam 2 is V-shaped.

[0050] Specifically, the central axis of the slide plate 6 is located in the middle of the two sliding seats 7 .

[0051] The stability of the slide plate 6 is ensured by arranging the cross section of the slide plate 6 along the sliding direction perpendicular to the steel beam 2 into a V-shape.

[0052] Preferably, the telescopic member includes a hydraulic rod 10, the top end of the hydraulic rod 10 is hingedly connected to the slide plate 6, and the bottom end of the hydraulic rod 10 is fixedly connected to the existing floor.

[0053] Specifically, the bottom end of the hydraulic rod 10 is connected to the existing floor slab via an anchor bolt 12 .

[0054] By providing the anchor bolt 12 , the supporting stability of the hydraulic rod 10 is improved.

[0055] Specifically, a lateral support 11 is connected between the hydraulic rod 10 and the existing floor slab.

[0056] By providing the lateral support 11 , the support stability of the hydraulic rod 10 is further improved.

[0057] Specifically, the number of the telescopic members is at least two, and at least two of the telescopic members are spaced apart and distributed on both sides of the central axis of the slide plate 6 .

[0058] By providing at least two telescopic members, the stability of the slide plate 6 is improved.

[0059] Preferably, a lifting point for connecting a lifting rope of the lifting device 1 is provided on the steel beam 2 , and the lifting point is arranged away from the center of gravity of the steel beam 2 .

[0060] Preferably, a baffle 13 for preventing the steel beam 2 from slipping is detachably connected to the top of the first end of the slide plate 6 .

[0061] A method for hoisting a steel beam from a window of an existing structure comprises the steps of:

[0062] Step 1: Provide the above-mentioned lifting structure for lifting the steel beam from the window of the existing structure and install it in place;

[0063] Step 2: Use the lifting equipment 1 to lift the steel beam 2 to the window;

[0064] Step 3: Bring one end of the steel beam 2 close to and over the guide section 8, and slowly lower the steel beam 2 so that the steel beam 2 slides along the slide plate 6 into the room;

[0065] Step 4: When the steel beam stops sliding and has not reached the first end of the slide plate, the telescopic member is controlled to shorten so that the steel beam 2 slides further into the room until it reaches the first end of the slide plate and is received by the room.

[0066] Preferably, the steel beam 2 is provided with a lifting point for connecting the lifting rope of the lifting device 1, and the lifting point is arranged away from the center of gravity of the steel beam 2;

[0067] When executing the above step 3, the relatively downwardly inclined end of the steel beam 2 is brought close to and overlapped with the connecting section 8.

[0068] Since the designed lifting point deviates from the center of gravity of the steel beam 2, one end of the steel beam 2 must be relatively tilted downward when it is hoisted in the air. By bringing the relatively downward tilted end of the steel beam 2 close to and supporting it to the connecting section 8, it is easier for the steel beam 2 to slide from outdoors to indoors along the slide plate 6.

[0069] Specifically, a plurality of electromagnets 9 are connected to the top of the slide plate 6 at intervals along the sliding direction of the steel beam 2;

[0070] Before executing the above step 3, the electromagnet 9 is started, and when the relatively downwardly inclined end of the steel beam 2 approaches the receiving section 8, the electromagnet 9 directly adsorbs the steel beam 2 to the receiving section 8.

[0071] Supporting one end of the steel beam 2 to the connecting section 8 is a great test of the operating skills of the driver of the lifting equipment 1. If the steel beam 2 is not lowered into place, it is easy to cause damage to the slide plate 6. Therefore, by setting the electromagnet 9, it is only necessary to move the steel beam 2 close to the slide plate 6, and the electromagnet 9 on the slide plate 6 will automatically adsorb the steel beam 2 to the top of the slide plate 6, thereby improving construction safety.

[0072] Specifically, a baffle 13 is detachably connected to the top of the first end of the slide plate 6;

[0073] When executing the above step 4, the telescopic member is controlled to shorten until the steel beam 2 slides to the baffle 13, the baffle 13 is removed and the telescopic member is controlled to shorten further so that the steel beam 2 continues to slide and is received indoors.

[0074] By providing the baffle 13, the sliding of the steel beam 2 is divided into two steps, which prevents the steel beam 2 from sliding into place too quickly and uncontrollably at one time, thereby improving construction safety.

[0075] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0076] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A lifting structure for lifting a steel beam from a window of an existing structure, characterized in that: include: Lifting equipment for lifting the steel beam to the window; Two sliding seats for protecting the bottom edge of the window, the two sliding seats being detachably connected to the bottom edge of the window; A slide plate is provided for the steel beam to slide from the outdoors to the indoors, the slide plate is movably supported on the top of the two sliding seats, the first end of the slide plate is located indoors, a telescopic member for controlling the inclination angle of the slide plate is connected between the bottom of the first end of the slide plate and the existing floor slab, the second end of the slide plate is located outdoors, the second end of the slide plate extends obliquely upward and forms a connecting section for connecting the steel beam.

2. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: A plurality of electromagnets for slowing down the sliding speed of the steel beam are connected to the top of the slide plate at intervals along the sliding direction of the steel beam.

3. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: The sliding seat includes an inverted U-shaped support ring, and the relative inner sides of the two flange plates of the inverted U-shaped support ring are connected to suction cups for connecting to the inner and outer sides of the bottom wall of the window respectively, and the slide plate is movably supported on the top of the inverted U-shaped support ring.

4. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: The cross section of the slide plate along the sliding direction perpendicular to the steel beam is V-shaped.

5. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: The telescopic member comprises a hydraulic rod, the top end of the hydraulic rod is hingedly connected to the slide plate, and the bottom end of the hydraulic rod is fixedly connected to the existing floor slab.

6. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: The steel beam is provided with a lifting point for connecting the lifting rope of the lifting equipment, and the lifting point is arranged away from the center of gravity of the steel beam.

7. The hoisting structure for hoisting a steel beam from a window of an existing structure as claimed in claim 1, characterized in that: A baffle plate for preventing the steel beam from slipping off is detachably connected to the top of the first end of the slide plate.

8. A method for hoisting a steel beam from a window of an existing structure, characterized in that: Includes steps: Step 1: Provide a lifting structure for lifting a steel beam from a window of an existing structure as described in claim 1 and install it in place; Step 2: Use lifting equipment to lift the steel beam to the window; Step 3: Bring one end of the steel beam close to and over the guide section, slowly lower the steel beam, and make the steel beam slide along the slide plate into the room; Step 4: When the steel beam stops sliding and has not reached the first end of the slide plate, the telescopic member is controlled to shorten so that the steel beam slides further into the room until it reaches the first end of the slide plate and is received by the room.

9. The method for hoisting a steel beam from a window of an existing structure as claimed in claim 8, characterized in that: The steel beam is provided with a lifting point for connecting the lifting rope of the lifting equipment, and the lifting point is arranged away from the center of gravity of the steel beam; When executing the above step 3, the relatively downwardly inclined end of the steel beam is brought close to and placed on the connecting section.

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