Adjustable steel beam back-jacking device

Abstract

The utility model discloses an adjustable steel beam back-jacking device which comprises a top bracket, an adjusting screw rod, a balance screw rod, a supporting joint and a bottom supporting seat, the top bracket is of a U-shaped structure, so that the steel beam can be placed in the top bracket; the lower ends of the plurality of adjusting screw rods are respectively connected to the top plate of the supporting section through adjusting nuts in a rotatable adjusting manner, and the upper ends of the plurality of adjusting screw rods are respectively and vertically connected to the bottom plate of the top bracket; a plurality of balance screw rods are respectively connected between the bottom plate of the top bracket and the top plate of the supporting section through locking nuts; the bottom supporting base is installed at the bottom of the supporting joint and fixed to the supporting component. The utility model relates to the technical field of building construction equipment, and can solve the problems of poor supporting stability and adaptability of a steel beam supporting structure in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to an adjustable steel beam top-returning device. Background Art

[0002] In the process of high-rise steel structure construction, various complex and special-shaped space structures are also widely used in various buildings. Among them, large cantilever steel structure is the most widely used. Due to its complex structural system and construction difficulty, the structure construction period is long, and there are many influencing factors, which increases the construction difficulty; and the stress conditions during the construction process are different from the traditional structural system, and it cannot be constructed according to traditional construction technology.

[0003] Since the height difference between the upper and lower cantilever beams of non-standard layers in high-rise structures is inconsistent, it brings inconvenience to the installation and construction of cantilever beams. Chinese utility model patent CN213953101U discloses a temporary support for steel beam docking. The support stability of this support structure is poor and can only be used for temporary support of steel beams. It cannot meet the installation and use requirements of cantilever steel beams, and cannot be stably set on components of different forms, and has poor adaptability. Therefore, it is necessary to provide an adjustable steel beam return device that can solve the problem of poor support stability and adaptability of steel beam support structures in the prior art. Summary of the invention

[0004] The utility model aims to provide an adjustable steel beam top-returning device, which can solve the problems of poor supporting stability and adaptability of the steel beam supporting structure in the prior art.

[0005] The utility model is achieved in this way:

[0006] An adjustable steel beam returning device comprises a top support seat, an adjusting screw, a balancing screw, a support section and a bottom support seat; the top support seat is in a U-shaped structure so that the steel beam can be placed in the top support seat; the lower ends of a plurality of adjusting screws are rotatably and adjustably connected to the top plate of the support section through adjusting nuts, and the upper ends of a plurality of adjusting screws are vertically connected to the bottom plate of the top support seat; a plurality of balancing screws are connected between the bottom plate of the top support seat and the top plate of the support section through locking nuts; the bottom support seat is installed at the bottom of the support section, and the bottom support seat is fixed to the supporting member.

[0007] When the supporting member is a box-type steel beam, the bottom supporting seat includes a first supporting plate and an end plate; the first supporting plate is an inverted U-shaped structure and covers the top and both sides of the box-type steel beam, and a plurality of end plates are symmetrically connected to the outer walls on both sides of the first supporting plate.

[0008] The end plate is in an inverted L-shaped structure, the horizontal section of the end plate is fixed on the horizontal section of the first support plate and connected and fixed to the bottom of the support section, and the vertical section of the end plate is fixed on the vertical section of the first support plate.

[0009] When the supporting member is an I-beam, the bottom supporting seat includes a second supporting plate and a connecting plate; an ear plate is formed on the upper wing plate of the I-beam, and the second supporting plate is a flat plate structure and is fitted on the upper wing plate of the I-beam; one end of the connecting plate is fixedly connected to the second supporting plate and the supporting section, and the other end of the connecting plate is fixedly connected to the ear plate.

[0010] The plurality of adjusting screws are symmetrically arranged about the center of the top plate of the support section, the plurality of balancing screws are symmetrically arranged about the center of the top plate of the support section, and the plurality of balancing screws are arranged outside the plurality of adjusting screws.

[0011] A pair of reinforcing plates are formed between the top plate of the support section and the bottom support seat, a plurality of balancing screws are located directly above the pair of reinforcing plates, and a plurality of adjusting screws are located between the pair of reinforcing plates and the web of the support section.

[0012] The top supporting seat, the supporting section and the bottom supporting seat are coaxially arranged.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model is provided with an adjusting screw, which can control the adjusting screw to make a linear lifting motion under the rotation of the adjusting nut, thereby driving the top support to lift and lower, which can meet the support requirements of cantilevered steel beams of different heights in non-standard layers, and the adjustment operation is convenient and the adjustment accuracy is high, which is conducive to improving the safety of the steel beam returning to the top and the construction efficiency.

[0015] 2. The utility model is provided with a balancing screw, which can be fixed between the bottom plate of the top bracket and the top plate of the support section through double nuts, thereby improving the load-bearing capacity and return stability of the entire device, which is beneficial to improving construction safety, and the threaded connection method makes disassembly and assembly more convenient and quick.

[0016] 3. Since the utility model is provided with a bottom support seat, it can adapt to box-type steel beams and I-beams through the first support plate of the inverted U-shaped structure and the second support plate of the flat plate structure. While ensuring reliable support, it has good adaptability to different forms of support members and has a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the adjustable steel beam top-returning device of the utility model (Example 1);

[0018] Figure 2It is a structural schematic diagram of the support section, the bottom support seat and the support member in the adjustable steel beam top-returning device of the utility model (Example 1);

[0019] Figure 3 It is a structural schematic diagram of the adjustable steel beam top-returning device of the utility model (Example 2);

[0020] Figure 4 It is a structural schematic diagram of the support section, the bottom support seat and the support member in the adjustable steel beam top-returning device of the utility model (Example 2);

[0021] Figure 5 It is a top view of the bottom plate of the top support in the adjustable steel beam top-returning device of the utility model;

[0022] Figure 6 It is a front view of a balancing screw in an adjustable steel beam top-returning device of the utility model.

[0023] In the figure, 1 is a top support seat, 2 is an adjusting screw, 201 is an adjusting nut, 3 is a balancing screw, 301 is a locking nut, 4 is a supporting section, 401 is a reinforcing plate, 5 is a bottom support seat, 501 is a first supporting plate, 502 is an end plate, 503 is a second supporting plate, 504 is a connecting plate, 601 is a box-type steel beam, 602 is an I-beam beam, and 603 is an ear plate. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please see attached Figure 1 To Attachment Figure 4 An adjustable steel beam returning device comprises a top support 1, an adjusting screw 2, a balancing screw 3, a supporting section 4 and a bottom support 5; the top support 1 is in a U-shaped structure, so that the steel beam can be placed in the top support 1; the lower ends of a plurality of adjusting screws 2 are rotatably and adjustably connected to the top plate of the supporting section 4 through adjusting nuts 201, and the upper ends of a plurality of adjusting screws 2 are vertically connected to the bottom plate of the top support 1; a plurality of balancing screws 3 are connected between the bottom plate of the top support 1 and the top plate of the supporting section 4 through locking nuts 301; the bottom support 5 is installed at the bottom of the supporting section 4, and the bottom support 5 is fixed to the supporting member.

[0026] Preferably, the adjusting nut 201 can be rotatably mounted on the bottom surface of the top plate of the support section 4 through a rotating bearing, so that it can rotate relative to the top plate of the support section 4. A through hole is reserved on the top plate of the support section 4 for the lower end of the adjusting screw 2 to pass through. Four adjusting screws 2 can be provided, and four adjusting nuts 201 are correspondingly provided and aligned with the four through holes on the top plate of the support section 4. The upper ends of the four adjusting screws 2 are vertically welded to the bottom surface of the bottom plate of the top bracket 1.

[0027] The top support 1 can be welded by selecting horizontal and vertical steel plates of corresponding sizes according to the size of the steel beam to be returned to the top, so as to ensure reliable support and clamping and limiting of the steel beam. When the adjusting nut 201 is rotated, since the top support 1 and the support section 4 cannot rotate relative to each other under the connection and restriction of the four adjusting screws 2, the rotation of the adjusting nut 201 can be converted into the linear lifting movement of the adjusting screw 2 along the axial direction through threaded transmission, thereby realizing the height adjustment of the top support 1 to meet the requirements of cantilever steel beams of different heights in non-standard layers, and the accuracy and controllability of the return height are high.

[0028] Preferably, four balancing screws 3 can be provided, and eight locking nuts 301 can be provided accordingly, and through holes for the balancing screws 3 to pass through are reserved on the bottom plate of the top bracket 1 and the top plate of the support section 4. After the two locking nuts 301 are screwed onto the balancing screws 3, and the balancing screws 3 are inserted between the bottom plate of the top bracket 1 and the top plate of the support section 4, the two locking nuts 301 are used to tighten against the top and bottom surfaces of the bottom plate of the top bracket 1, and the two locking nuts 301 are used to tighten against the top and bottom surfaces of the top plate of the support section 4, thereby ensuring reliable connection between the balancing screws 3 and the bottom plate of the top bracket 1 and the top plate of the support section 4, thereby ensuring the stability of the steel beam support back to the top.

[0029] The supporting member can be selected as a steel structure member located below the steel beam. The bottom supporting seat 5 is fixed on the supporting member. The weight of the steel beam can be transferred to the supporting member through the top supporting seat 1, the adjusting screw 2, the balancing screw 3, the supporting section 4 and the bottom supporting seat 5 in sequence, and then transferred to the steel structure, further ensuring the stability of the steel beam support back to the top.

[0030] Preferably, the top bracket 1, the adjusting screw 2, the balancing screw 3, the supporting section 4 and the bottom supporting seat 5 are all made of high-strength steel material to ensure the support stability and safety.

[0031] Please see attached Figure 1 and attached Figure 2 When the supporting member is a box-shaped steel beam 601, the bottom supporting seat 5 includes a first supporting plate 501 and an end plate 502; the first supporting plate 501 is an inverted U-shaped structure and covers the top and both sides of the box-shaped steel beam 601, and a plurality of end plates 502 are symmetrically connected to the outer walls on both sides of the first supporting plate 501.

[0032] The first support plate 501 of the inverted U-shaped structure can match the box structure of the box steel beam 601, prevent lateral displacement, and ensure the installation reliability of the bottom support seat 5 on the box steel beam 601. The end plate 502 can be used to improve the force bearing capacity of the first support plate 501.

[0033] Please see attached Figure 1 and attached Figure 2The end plate 502 is an inverted L-shaped structure, the horizontal section of the end plate 502 is fixed on the horizontal section of the first support plate 501 and is connected and fixed to the bottom of the support section 4, and the vertical section of the end plate 502 is fixed on the vertical section of the first support plate 501.

[0034] The end plate 502 can also improve the integrity and reliability of the connection between the bottom of the support section 4 and the first support plate 501, thereby further ensuring the stability of the entire device in supporting the steel beam back to the top.

[0035] Please see attached Figure 3 and attached Figure 4 When the supporting member is an I-beam 602, the bottom supporting seat 5 includes a second supporting plate 503 and a connecting plate 504; an ear plate 603 is formed on the upper wing plate of the I-beam 602, and the second supporting plate 503 is a flat plate structure and is fitted on the upper wing plate of the I-beam 602; one end of the connecting plate 504 is fixedly connected to the second supporting plate 503 and the supporting section 4, and the other end of the connecting plate 504 is fixedly connected to the ear plate 603.

[0036] The second support plate 503 of the planar plate structure can be attached to the upper wing plate of the I-beam 602, with a large contact area. At the same time, the ear plate 603 welded on the upper wing plate of the I-beam 602 is connected to the second support plate 503 through the connecting plate 504 to form a whole, thereby ensuring the stability of the entire device in supporting the steel beam back to the top and the reliability of force transmission.

[0037] Preferably, the ear plate 603 and the connecting plate 504 can be connected by high-strength bolts, and the connecting plate 504 and the second support plate 503 can be connected by welding, so as to ensure the integrity and stability of the structure and make the disassembly and assembly between the bottom support seat 5 and the supporting member more convenient.

[0038] Please see attached Figure 1 and attached Figure 3 The plurality of adjusting screws 2 are symmetrically arranged about the top plate center of the supporting section 4 , the plurality of balancing screws 3 are symmetrically arranged about the top plate center of the supporting section 4 , and the plurality of balancing screws 3 are arranged on the outside of the plurality of adjusting screws 2 .

[0039] The adjusting screw 2 and the balancing screw 3 are both installed symmetrically, and the overall force is uniform.

[0040] Please see attached Figure 1 and attached Figure 3 A pair of reinforcing plates 401 are formed between the top plate of the support section 4 and the first support plate 501 / second support plate 502 of the bottom support seat 5, a number of balancing screws 3 are located directly above the pair of reinforcing plates 401, and a number of adjusting screws 2 are located between the pair of reinforcing plates 401 and the web of the support section 4.

[0041] Preferably, a pair of reinforcing plates 401 are vertically welded between the top plate of the support section 4 and the first support plate 501 / second support plate 502 of the bottom support seat 5, and are symmetrically arranged about the web of the support section 4, thereby improving the structural stability and force-bearing capacity of the support section 4, and further ensuring the safety and stability of the steel beam returning to the top.

[0042] Please see attached Figure 1 and attached Figure 3 The top support seat 1, support section 4 and bottom support seat 5 are coaxially arranged to ensure stable, reliable and safe force transmission.

[0043] Please see attached Figure 1 and attached Figure 2 , Example 1:

[0044] When the supporting member is a box-shaped steel beam 601, a first supporting plate 501 of an inverted U-shaped structure is selected, and the size of the first supporting plate 501 can be selected according to the size adaptability of the box-shaped steel beam 601. The bottom of a pair of reinforcing plates 401 and the bottom of the web of the supporting section 4 are welded to the top surface of the first supporting plate 501, and the height of the supporting section 4 can be selected according to the adaptability of the return height.

[0045] The horizontal section of the end plate 502 is welded and fixed to the bottom of a pair of reinforcing plates 401 and the horizontal section of the first support plate 501, and the vertical section of the end plate 502 is welded and fixed to the vertical section of the first support plate 501. The first support plate 501 is matched and buckled on the box-shaped steel beam 601, and the end plate 502 can be connected and fixed to other steel components in the steel structure by bolts to improve the support stability of the bottom.

[0046] By rotating the adjusting nut 201, the rotation of the adjusting nut 201 is converted into axial linear motion of the adjusting screw 2 by utilizing the transmission of the thread, thereby driving the top support 1 to perform linear lifting motion, thereby being able to accurately adjust the return height of the top support 1 to the steel beam and enable the top support 1 to stably support the steel beam.

[0047] The balancing screw 3 is passed through between the bottom plate of the top bracket 1 and the top plate of the support section 4. The upper end of the balancing screw 3 is screwed and tightened on the top and bottom surfaces of the bottom plate of the top bracket 1 through a double nut. The lower end of the balancing screw 3 is screwed and tightened on the top and bottom surfaces of the top plate of the support section 4 through a double nut. The balancing screw 3 is fixedly supported between the bottom plate of the top bracket 1 and the top plate of the support section 4.

[0048] The four corners of the bottom plate of the top bracket 1 and the top plate of the support section 4 are all installed with balancing screws 3 in the same way, further improving the supporting stability of the top bracket 1 on the steel beam. The length of the balancing screw 3 and the length of the adjusting screw 2 can be adaptively selected according to the actual adjustment range.

[0049] Please see attached Figure 3and attached Figure 4 , Example 2:

[0050] When the supporting member is an I-beam 602, a second supporting plate 503 of a planar plate structure is selected, and the size of the second supporting plate 503 can be adaptively selected according to the size of the upper wing plate of the I-beam 602. The bottom of a pair of reinforcing plates 401 and the bottom of the web of the supporting section 4 are welded to the top surface of the second supporting plate 503, and the height of the supporting section 4 can be adaptively selected according to the height of the top return.

[0051] One end of the connecting plate 504 is welded and fixed to the bottom of a pair of reinforcing plates 401 and the top surface of the second supporting plate 503, the ear plate 603 is welded to the top surface of the upper wing plate of the I-beam 602, and the other end of the connecting plate 504 is screwed and fixed to the ear plate 603. The connecting plate 504 can be connected and fixed to other steel components in the steel structure by bolts to improve the support stability of the bottom.

[0052] By rotating the adjusting nut 201, the rotation of the adjusting nut 201 is converted into axial linear motion of the adjusting screw 2 by utilizing the transmission of the thread, thereby driving the top support 1 to perform linear lifting motion, thereby being able to accurately adjust the return height of the top support 1 to the steel beam and enable the top support 1 to stably support the steel beam.

[0053] The balancing screw 3 is passed through between the bottom plate of the top bracket 1 and the top plate of the support section 4, the upper end of the balancing screw 3 is screwed and tightened on the top and bottom surfaces of the bottom plate of the top bracket 1 through double nuts, and the lower end of the balancing screw 3 is screwed and tightened on the top and bottom surfaces of the top plate of the support section 4 through double nuts, and the balancing screw 3 is fixedly supported between the bottom plate of the top bracket 1 and the top plate of the support section 4. The length of the balancing screw 3 and the length of the adjusting screw 2 can be adaptively selected according to the requirements of the actual adjustment range.

[0054] The balancing screws 3 are installed at the four corners of the bottom plate of the top bracket 1 and the top plate of the support section 4 in the same way, so as to further improve the supporting stability of the top bracket 1 on the steel beam.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable steel beam top-returning device, characterized by: The invention comprises a top support seat (1), an adjusting screw rod (2), a balancing screw rod (3), a support section (4) and a bottom support seat (5); the top support seat (1) is in a U-shaped structure so that a steel beam can be placed in the top support seat (1); the lower ends of a plurality of adjusting screw rods (2) are rotatably and adjustably connected to the top plate of the support section (4) through adjusting nuts (201), and the upper ends of a plurality of adjusting screw rods (2) are vertically connected to the bottom plate of the top support seat (1); a plurality of balancing screw rods (3) are connected between the bottom plate of the top support seat (1) and the top plate of the support section (4) through locking nuts (301); the bottom support seat (5) is installed at the bottom of the support section (4), and the bottom support seat (5) is fixed to the support member.

2. The adjustable steel beam return device according to claim 1 is characterized in that: When the supporting member is a box-shaped steel beam (601), the bottom supporting seat (5) comprises a first supporting plate (501) and an end plate (502); the first supporting plate (501) is in an inverted U-shaped structure and covers the top and both sides of the box-shaped steel beam (601), and a plurality of end plates (502) are symmetrically connected to the outer walls on both sides of the first supporting plate (501).

3. The adjustable steel beam return device according to claim 2 is characterized in that: The end plate (502) is an inverted L-shaped structure, the horizontal section of the end plate (502) is fixed on the horizontal section of the first support plate (501) and connected and fixed to the bottom of the support section (4), and the vertical section of the end plate (502) is fixed on the vertical section of the first support plate (501).

4. The adjustable steel beam return device according to claim 1 is characterized in that: When the supporting member is an I-beam (602), the bottom supporting seat (5) comprises a second supporting plate (503) and a connecting plate (504); an ear plate (603) is formed on the upper wing plate of the I-beam (602); the second supporting plate (503) is a planar plate structure and is fitted on the upper wing plate of the I-beam (602); one end of the connecting plate (504) is fixedly connected to the second supporting plate (503) and the supporting section (4), and the other end of the connecting plate (504) is connected and fixed to the ear plate (603).

5. The adjustable steel beam top-returning device according to claim 4 is characterized in that: The plurality of adjusting screws (2) are symmetrically arranged about the center of the top plate of the support section (4), the plurality of balancing screws (3) are symmetrically arranged about the center of the top plate of the support section (4), and the plurality of balancing screws (3) are arranged outside the plurality of adjusting screws (2).

6. The adjustable steel beam return device according to claim 1 is characterized in that: A pair of reinforcing plates (401) are formed between the top plate of the support section (4) and the bottom support seat (5), a plurality of balancing screws (3) are located directly above the pair of reinforcing plates (401), and a plurality of adjusting screws (2) are located between the pair of reinforcing plates (401) and the web of the support section (4).

7. The adjustable steel beam top-returning device according to claim 1 is characterized in that: The top support seat (1), the support section (4) and the bottom support seat (5) are coaxially arranged.

Images