Combined steel frame convenient to splice and use method thereof

Abstract

The application relates to the technical field of steel frames, in particular to a combined steel frame convenient to splice and a use method; the combined steel frame comprises a group of two steel column assemblies and a steel beam assembly installed on the upper side of the group of steel column assemblies; the lower end of the steel column assembly is connected with the ground through a first ground connecting base; the steel column assembly is rotationally connected with the first ground connecting base; one end of the steel column assembly is inserted into the steel beam assembly and is slidably connected with the steel beam assembly; two limiting blocks are installed in the steel beam assembly; the upper end of the steel column assembly can be attached to the side of the limiting block; the method for using the combined steel frame convenient to splice comprises the following steps: a hydraulic lifting device is used to rotationally control a U-shaped steel column body and vertically lift a U-shaped steel beam body; the two U-shaped steel column bodies are gradually vertically lifted during rotation, the U-shaped steel beam body is supported and lifted, and the convenience of splicing and combining of a single-layer steel frame with low height is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel frame, in particular to a combined steel frame convenient to splice and a use method thereof. BACKGROUND

[0002] The steel frame mainly comprises steel beams and columns; compared with concrete and wood, the ratio of density to yield strength of steel parts is relatively low, so that the cross section of the steel parts is smaller and the self weight is lighter under the same stress condition, so that the combined steel frame can bear vertical load and horizontal load, and the steel has the characteristics of high strength, good toughness, strong plasticity and full utilization, and is widely used.

[0003] The assembly of the steel frame is usually to install the steel column vertically on the ground, then use a crane to hoist the steel beam to the upper end of the steel column, and finally use bolts or rivets to connect the steel beam and the steel column together; however, in the case of a single-layer steel frame with low height and inconvenience to use a crane, the use of the above combined steel frame structure will bring inconvenience and danger to the assembly construction of the combined steel frame. SUMMARY

[0004] The purpose of the present application is to provide a combined steel frame which can be spliced and installed without using a crane, and a use method of the combined steel frame.

[0005] In order to achieve the above purpose, the present application provides a combined steel frame convenient to splice, which comprises a set of two steel column assemblies and a steel beam assembly installed on the upper side of the two steel column assemblies, and the lower end of the steel column assembly is connected with the ground through a first ground connection base.

[0006] In the present application, the end of the steel column assembly close to the ground is rotatably connected with the edge base of the first ground connection base body;

[0007] One end of the U-shaped steel column body of the steel column assembly is inserted into the U-shaped steel beam body of the steel beam assembly and is slidably connected with the U-shaped steel beam body;

[0008] The inner sides of both ends of the U-shaped steel beam body are respectively provided with a limiting block, and the end of the U-shaped steel column body away from the ground can be fitted with the side of the limiting block;

[0009] The outer side of the lower end of the U-shaped steel column body is fixedly connected with a lifting sleeve, the two sides of the lifting sleeve are respectively fixedly connected with a plurality of cross arms, the cross arms extend outwardly along the horizontal direction of the lifting sleeve, and the lower end of the cross arm abuts against the hydraulic lifting equipment installed on the ground.

[0010] In the present application, the end of the steel column assembly close to the ground is rotatably connected with the rotating shaft on the edge base, and the end of the steel column assembly close to the ground is detachably fixedly connected with the edge base through the positioning pin;

[0011] The end of the U-shaped steel column body away from the ground is fixedly connected with an end plate, the end plate is inserted into the U-shaped steel beam body, and an arc surface I is arranged on the end plate and abuts against the inner side surface of the U-shaped steel beam body.

[0012] Through the above scheme, the two U-shaped steel column bodies can be gradually erected during rotation, and the bearing and lifting operation of the U-shaped steel beam body are facilitated, thereby increasing the convenience of the single-layer steel frame splicing combination with low height.

[0013] The method for facilitating splicing of the combined steel frame provided by the application comprises the following steps:

[0014] Step one: installing a first ground connecting base on the ground;

[0015] Step two: installing a U-shaped steel column body on the first ground connecting base;

[0016] Step three: erecting a U-shaped steel beam body on the upper sides of the two U-shaped steel column bodies;

[0017] Step four: using a hydraulic lifting device to control the rotation of the U-shaped steel column body and vertically lifting the U-shaped steel beam body;

[0018] Step five: when the end of the U-shaped steel column body away from the ground fully abuts against the side of the limiting block, the splicing operation of the combined steel frame is completed.

[0019] The hydraulic lifting device can use a hydraulic jack or other devices available on the market.

[0020] Further, on the basis of the above scheme, a second ground connecting base is installed on the ground between the two first ground connecting bases, and a pre-positioning assembly is installed on the second ground connecting base, thereby increasing the stability of the steel beam assembly during lifting.

[0021] The positioning steel column of the pre-positioning assembly penetrates the conical hole on the U-shaped steel beam body, and an annular gap is formed between the outer side surface of the positioning steel column and the inner side surface of the conical hole.

[0022] The positioning steel column serving as a guide and positioning element is detachably fixedly connected with the support steel column of the pre-positioning assembly body, the lower end of the support steel column is connected with the central base of the second ground connecting base body, and the central base is installed on the ground through a plurality of embedded nails.

[0023] Further, on the basis of the above scheme, a disc is arranged at the lower end of the support steel column, two annular rings are detachably fixedly connected with the side of the support steel column, and the two annular rings are located on the upper and lower sides of the disc, respectively.

[0024] The inward extension side is detachably and fixedly connected with the limiting ring on the upper and lower sides respectively, the disc is slidably connected in the space surrounded by the inner side of the inward extension side and one side of the two limiting rings close to the inward extension side, and the side of the two circular rings is respectively attached to the side of the two limiting rings away from the inward extension side;

[0025] A tension seat is installed on the two sides of the supporting steel column respectively, the tension seat is clamped on the side of the supporting steel column, the two tension seats are detachably and fixedly connected with each other, a plurality of springs are fixedly connected on the side of the tension seat by welding, the other end of the spring is fixedly connected with a seat plate by welding, and the seat plate is detachably and fixedly connected to the upper end of the central base.

[0026] The plurality of springs installed between the seat plate and the tension seat enable the supporting steel column to always have a tendency to move to the middle position of the central base, thereby increasing the guiding and positioning effect of the positioning steel column.

[0027] The beneficial effects of the present application are that, compared with the prior art, the steel beam needs to be lifted by a crane to be installed on the top of the steel column, the present application drives the rotation of the two U-shaped steel column bodies, realizes the supporting and lifting operation of the U-shaped steel beam body in the process of erecting the U-shaped steel column body, and thus does not need to use a crane in the process of splicing and combining the steel frame product, increases the convenience, and reduces the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] The following drawings are only intended to schematically illustrate and explain the present application, wherein:

[0029] Figure 1 It is a structure schematic view of the combined steel frame in the folded state of the present application for easy splicing;

[0030] Figure 2 It is a structure schematic view of the combined steel frame in the unfolded state of the present application for easy splicing;

[0031] Figure 3 It is a structure schematic view of the U-shaped steel beam body, the supporting plate, the conical hole and the limiting block of the present application;

[0032] Figure 4 It is a structure schematic view of the U-shaped steel beam body and the positioning steel column of the present application;

[0033] Figure 5 It is a structure schematic view of the edge base, the end plate and the Z-shaped steel column of the present application;

[0034] Figure 6 It is a structure schematic view of the hollow steel pipe, the adjusting steel strip, the Z-shaped steel column and the supporting steel column of the present application;

[0035] Figure 7Partial enlarged view of the folding driving assembly of the present application;

[0036] Figure 8 Structural schematic view of the tension seat, seat plate and support steel column of the present application;

[0037] Figure 9 Structural schematic view of the central base, inwardly extending edge and limiting ring of the present application;

[0038] Figure 10 Structural schematic view of the central base, support steel column and positioning steel column of the present application;

[0039] Figure 11 Structural schematic view of the folding driving assembly, positioning steel column and insertion sleeve of the present application Figure 1 ;

[0040] Figure 12 Structural schematic view of the folding driving assembly, positioning steel column and insertion sleeve of the present application Figure 2 ;

[0041] Figure 13 Partial enlarged view of the connecting slot arm, movable folding slot arm and screw rod of the present application;

[0042] Figure 14 Structural schematic view of the connecting seat I, connecting seat II, splicing sleeve and arc surface II of the present application.

[0043] In the figure: 1, first ground connecting base; 11, edge base; 12, rotating shaft; 13, positioning pin; 2, steel column assembly; 21, U-shaped steel column main body; 211, end steel plate; 212, arc surface I; 22, lifting sleeve; 23, cross arm; 3, steel beam assembly; 31, U-shaped steel beam main body; 32, support plate; 33, conical surface hole; 34, limiting block; 4, second ground connecting base; 41, central base; 42, embedded nail; 43, inwardly extending edge; 44, threaded hole I; 45, limiting ring; 46, threaded hole II; 47, tension seat; 48, seat plate; 5, pre-positioning assembly; 51, support steel column; 52, circular ring; 53, positioning steel column; 6, precise positioning assembly; 61, insertion sleeve; 62, support edge; 7, auxiliary support assembly; 71, hollow steel pipe; 711, threaded hole III; 72, adjusting steel strip; 721, positioning hole; 73, Z-shaped steel column; 74, support steel column; 8, folding driving assembly; 81, connecting seat I; 82, connecting seat II; 83, splicing sleeve; 831, arc surface II; 84, lateral extension arm; 85, driving column; 86, connecting slot arm; 87, movable folding slot arm; 88, screw rod. DETAILED DESCRIPTION

[0044] In order to achieve the purpose of increasing the convenience of splicing the single-layer steel frame with low height, the application provides a combined steel frame convenient for splicing, which comprises a set of two steel column assemblies 2 and a steel beam assembly 3 installed on the upper side of the two steel column assemblies 2, and the lower end of the steel column assembly 2 is connected with the ground through a first ground connecting base 1.

[0045] In the application, the end of the steel column assembly 2 close to the ground is rotationally connected with the edge base 11 of the main body of the first ground connecting base 1.

[0046] The U-shaped steel column body 21 of the steel column assembly 2 is inserted into the U-shaped steel beam body 31 of the steel beam assembly 3 at one end and is slidably connected with the U-shaped steel beam body 31.

[0047] The inner side of the U-shaped steel beam body 31 is provided with one limiting block 34 at each end, and the end of the U-shaped steel column body 21 away from the ground can be attached to the side of the limiting block 34.

[0048] The outer side of the lower end of the U-shaped steel column body 21 is fixedly connected with a lifting sleeve 22, and the two sides of the lifting sleeve 22 are respectively fixedly connected with a plurality of cross arms 23, which extend outward from the lifting sleeve 22 in the horizontal direction, and the lower end of the cross arm 23 abuts against a hydraulic lifting device installed on the ground, and the hydraulic lifting device can provide the driving force required for the rotation of the U-shaped steel column body 21 on the first ground connecting base 1.

[0049] A plurality of support plates 32 are respectively welded and fixedly connected to the two sides of the U-shaped steel beam body 31, so as to support and carry the U-shaped steel beam body 31.

[0050] Specifically, a stand is installed on the ground, the stand supports the support plate 32, and the U-shaped steel beam body 31 can be stably placed on the upper side of the two U-shaped steel column bodies 21 in the folded state.

[0051] In this state, the upper end of the U-shaped steel column body 21 does not contact the U-shaped steel beam body 31, but after the U-shaped steel column body 21 is driven to rotate by using the hydraulic lifting device, the end of the U-shaped steel column body 21 away from the ground is connected with the U-shaped steel beam body 31.

[0052] Then, the U-shaped steel column body 21 is continuously rotated, the U-shaped steel column body 21 is gradually erected, and the U-shaped steel beam body 31 is lifted by the mutual sliding between the end of the U-shaped steel column body 21 away from the ground and the U-shaped steel beam body 31.

[0053] Finally, continuously rotating the U-shaped steel column body 21 to realize the supporting and lifting operation of the U-shaped steel beam body 31, under the interception of the limiting blocks 34 installed at the two ends of the inner side of the U-shaped steel beam body 31, the end of the U-shaped steel column body 21 away from the ground fully matches the side of the limiting block 34, and the two sides of the U-shaped steel beam body 31 are stably positioned and supported, and the combination installation of the steel frame is completed.

[0054] Among them, the two U-shaped steel column bodies 21 are respectively controlled by one hydraulic lifting device to realize synchronous rotation, so that the U-shaped steel beam body 31 can be stably vertically lifted.

[0055] Further, fasteners or rivets can be installed at the connection between the U-shaped steel column body 21 and the U-shaped steel beam body 31, thereby increasing the firmness of the steel frame after combination installation.

[0056] The hydraulic lifting device can use a hydraulic jack or other commercially available equipment.

[0057] The specific embodiments of the application are described below.

[0058] Referring to Figures 1-2 and Figure 5 The application provides a combination steel frame facilitating splicing, which increases the smoothness of the relative movement between the U-shaped steel column body 21 and the U-shaped steel beam body 31:

[0059] The edge base 11 of the application can be installed on the ground by pouring.

[0060] The end of the steel column assembly 2 close to the ground is rotationally connected with the rotating shaft 12 on the edge base 11, and the end of the steel column assembly 2 close to the ground is detachably fixedly connected with the edge base 11 through the positioning pin 13.

[0061] The end of the U-shaped steel column body 21 away from the ground is fixedly connected with an end plate 211, the end plate 211 is inserted into the U-shaped steel beam body 31, and the end plate 211 is provided with an arc surface I 212, the arc surface I 212 abuts against the inner side of the U-shaped steel beam body 31, and the arc surface I 212 and the inner side of the U-shaped steel beam body 31 are matched to increase the smoothness of the relative movement between the U-shaped steel column body 21 and the U-shaped steel beam body 31.

[0062] During the steel frame installation operation, grease can be applied to the end plate 211 to increase the smoothness and stability of the supporting and lifting operation of the U-shaped steel column body 21 on the U-shaped steel beam body 31.

[0063] Referring to Figures 1-4 and Figure 10The embodiment of the application provides a combined steel frame convenient for splicing, a positioning assembly 5 is additionally arranged, a small shaking space of a U-shaped steel beam body 31 during lifting by two U-shaped steel column bodies 21 is provided, and the lifting of the U-shaped steel beam body 31 is guided.

[0064] As a further improvement of the application, a second ground connecting base 4 is arranged on the ground between the two first ground connecting bases 1, and the positioning assembly 5 is arranged on the second ground connecting base 4, so that the stability of the steel beam assembly 3 during lifting is improved.

[0065] After the U-shaped steel beam body 31 is placed on the upper side of the U-shaped steel column body 21, the second ground connecting base 4 and the positioning assembly 5 are arranged.

[0066] The positioning steel column 53 of the positioning assembly 5 penetrates the conical hole 33 on the U-shaped steel beam body 31, and an annular gap is formed between the outer side of the positioning steel column 53 and the inner side of the conical hole 33, so that the small shaking space of the U-shaped steel beam body 31 during lifting by the two U-shaped steel column bodies 21 is provided, the lifting of the U-shaped steel beam body 31 is guided, and the U-shaped steel beam body 31 is prevented from being clamped on the positioning assembly 5.

[0067] The positioning steel column 53 is detachably fixedly connected with the supporting steel column 51 of the main body of the positioning assembly 5, the lower end of the supporting steel column 51 is connected with the central base 41 of the main body of the second ground connecting base 4, the central base 41 is arranged on the ground through a plurality of embedded nails 42, and the lower end of the embedded nail 42 is embedded into the ground.

[0068] The supporting steel column 51 and the positioning steel column 53 are detachably fixedly connected through fasteners and flange structures.

[0069] Referring to Figures 1-4 and Figures 7-10 The embodiment of the application provides a combined steel frame convenient for splicing, the guiding and positioning effect of the positioning steel column 53 is further improved, and the guiding performance during lifting of the U-shaped steel beam body 31 is improved.

[0070] As a further improvement of the application, a disc is arranged at the lower end of the supporting steel column 51, two annular rings 52 are detachably fixedly connected to the side of the supporting steel column 51, and the two annular rings 52 are arranged on the upper and lower sides of the disc.

[0071] The central base 41 is provided with an inward extension 43, the upper and lower sides of the inward extension 43 are detachably fixedly connected with limit rings 45, respectively, the disc is slidably connected in a space formed by the inner side of the inward extension 43 and one side of the two limit rings 45 close to the inward extension 43, and the sides of the two annular rings 52 are respectively attached to the sides of the two limit rings 45 away from the inward extension 43.

[0072] Two tension seats 47 are respectively arranged on both sides of the support steel column 51, the tension seat 47 is clamped on the side of the support steel column 51, the two tension seats 47 are detachably and fixedly connected with each other, a plurality of springs are fixedly connected on the side of the tension seat 47, the other end of the spring is fixedly connected with a seat plate 48, and the seat plate 48 is detachably and fixedly connected to the upper end of the central base 41.

[0073] The central base 41 is provided with a plurality of threaded holes II 46, two screws I are used to penetrate two holes II on the single seat plate 48, and then the screws I are screwed into the threaded holes II 46, so that the detachable and fixed installation of the seat plate 48 on the central base 41 is completed.

[0074] The plurality of springs arranged between the seat plate 48 and the tension seat 47 can make the support steel column 51 always have a tendency to move to the middle position of the central base 41, further increase the guiding and positioning effect of the positioning steel column 53, and improve the guiding performance in the lifting process of the U-shaped steel beam body 31.

[0075] The limiting ring 45 is formed by oppositely splicing two semicircular plates provided with square holes on the inner side, the semicircular plate is clamped in the groove on the side of the support steel column 51, and the two semicircular plates are fixedly connected through fasteners;

[0076] A plurality of threaded holes I 44 are arranged on the upper and lower sides of the inward extension along 43, a plurality of screws II are used to penetrate the holes I on the limiting ring 45, and then the screws II are screwed into the threaded holes I 44, so that the detachable and fixed installation of the limiting ring 45 on the inward extension along 43 is completed.

[0077] Referring to Figures 1-2 , Figure 7 and Figures 11-12 The combined steel frame is spliced, the precise positioning assembly 6 is additionally arranged, and under the cooperation of the pre-positioning assembly 5 and the precise positioning assembly 6, the middle part of the U-shaped steel beam body 31 is stably supported in the embodiment:

[0078] As a further improvement of the application, the precise positioning assembly 6 is vertically and slidingly arranged on the positioning steel column 53, the main body of the precise positioning assembly 6 is two insertion sleeves 61 which are symmetrically and slidingly connected on both sides of the positioning steel column 53, and the two insertion sleeves 61 are detachably and fixedly connected with each other;

[0079] The inclined surface on the top outer side of the insertion sleeve 61 can abut with the tapered surface on the inner side of the lower end of the tapered hole 33, and the top of the insertion sleeve 61 can be embedded into the annular gap between the outer side of the positioning steel column 53 and the tapered hole 33.

[0080] Further, the side of the insertion sleeve 61 is provided with a supporting edge 62, which can be attached to the inner side of the U-shaped steel beam body 31, so that the precise positioning assembly 6 and the pre-positioning assembly 5 jointly act on the lower side of the middle part of the U-shaped steel beam body 31 to stably support the middle part of the U-shaped steel beam body 31.

[0081] The lifting of the insertion sleeve 61 can be achieved by a manual scheme, and the lifted insertion sleeve 61 can be fixed on the positioning steel column 53 by riveting or welding.

[0082] Referring to FIGS. 1-8, Figure 2 , Figure 7 and Figures 11-14 , the application provides a combined steel frame convenient for splicing, and adds a folding driving assembly 8 to lift the insertion sleeve 61, thereby increasing the operation convenience:

[0083] As a further improvement of the application, the folding driving assembly 8 is arranged between the precise positioning assembly 6 and the positioning steel column 53, and the insertion sleeve 61 is lifted by the folding driving assembly 8 to increase the operation convenience;

[0084] Specifically, the folding driving assembly 8 comprises a connecting seat I 81, a connecting seat II 82, and a plurality of splicing sleeves 83.

[0085] The connecting seat I 81 is detachably connected with the insertion sleeve 61, and the connecting seat II 82 is detachably connected with the positioning steel column 53. Two splicing sleeves 83 are rotatably arranged on the connecting seat I 81 and the connecting seat II 82, respectively. The ends of the splicing sleeves 83 arranged on the upper and lower sides are respectively provided with arc surfaces II 831 capable of abutting each other. The outer sides of the splicing sleeves 83 are connected with driving columns 85 through lateral extension arms 84.

[0086] The two driving columns 85 on the left side are slidably connected in the sliding grooves I of the connecting groove arms 86, and the two driving columns 85 on the right side are slidably connected in the sliding grooves II of the movable folding groove arms 87. A screw rod 88 is rotatably arranged on the connecting groove arms 86, and the screw rod 88 is threadedly connected with the movable folding groove arms 87.

[0087] By rotating the screw rod 88, the connecting groove arms 86 and the movable folding groove arms 87 are brought close to each other, thereby driving the plurality of splicing sleeves 83 to synchronously rotate. During the synchronous rotation of the plurality of splicing sleeves 83, the connecting seat I 81 and the connecting seat II 82 move away from each other, thereby completing the lifting operation of the insertion sleeve 61 outside the supporting steel column 51. The insertion sleeve 61 is inserted into the annular gap, and the supporting edge 62 is attached to the inner side of the U-shaped steel beam body 31, thereby achieving the stable support operation of the middle part of the U-shaped steel beam body 31 and increasing the product use stability.

[0088] The connecting seat 81 and the connecting seat 82 are both formed by oppositely splicing two semicircular flange structures.

[0089] Referring to Figures 1-2 and Figures 5-6 It is shown that the application provides a combined steel frame convenient for splicing, and the auxiliary supporting assembly 7 is added to improve the support stability of the two sides of the U-shaped steel beam body 31 when the end of the U-shaped steel column body 21 away from the ground is not attached to the side of the limiting block 34.

[0090] As a further improvement of the application, the auxiliary supporting assembly 7 is rotatably installed in the steel column assembly 2, so that when the end of the U-shaped steel column body 21 away from the ground is not attached to the side of the limiting block 34, the end of the auxiliary supporting assembly 7 can be attached to the side of the limiting block 34, thereby increasing the support stability of the two sides of the U-shaped steel beam body 31.

[0091] Specifically, the hollow steel pipe 71 and the Z-shaped steel column 73 are rotatably installed in the U-shaped steel column body 21, the Z-shaped steel column 73 penetrates the side of the U-shaped steel column body 21, and the Z-shaped steel column 73 can be attached to the outside of the U-shaped steel column body 21, thereby reducing the influence of the two U-shaped steel column bodies 21 on the supporting and lifting of the U-shaped steel beam body 31.

[0092] The end of the Z-shaped steel column 73 located on the inside of the U-shaped steel column body 21 is rotatably installed with the adjusting steel strip 72, and the adjusting steel strip 72 is slidably connected with the hollow steel pipe 71.

[0093] The end of the Z-shaped steel column 73 located on the outside of the U-shaped steel column body 21 is detachably fixedly connected with the supporting steel column 74, one side of the end of the supporting steel column 74 can be attached to the side of the limiting block 34, and by using supporting steel columns 74 of different lengths, the steel frame product can be adapted to different installation requirements.

[0094] The hollow steel pipe 71 is provided with a threaded hole III 711, and the adjusting steel strip 72 is provided with a plurality of positioning holes 721, a screw III is screwed into the threaded hole III 711 and penetrates one of the plurality of positioning holes 721, the position of the adjusting steel strip 72 in the hollow steel pipe 71 is fixed and locked, the position of the adjusting steel strip 72 in the hollow steel pipe 71 is controlled by hand or hydraulic equipment, one side of the end of the supporting steel column 74 is attached to the side of the limiting block 34, and the support stability of the two sides of the U-shaped steel beam body 31 is increased.

[0095] Referring to Figures 1-14 It is shown that the application provides a combined steel frame convenient for splicing, and the auxiliary supporting assembly 7 is added to improve the support stability of the two sides of the U-shaped steel beam body 31 when the end of the U-shaped steel column body 21 away from the ground is not attached to the side of the limiting block 34.

[0096] Step one: pouring the edge base 11 on the ground, completing the installation of the first ground connecting base 1;

[0097] Step two: inserting the rotating shaft 12 into the U-shaped steel column body 21 and the edge base 11;

[0098] Step three: erecting the U-shaped steel beam body 31 on the two U-shaped steel column bodies 21;

[0099] Step four: installing the central base 41 on the ground between the two edge bases 11, and installing the pre-positioning assembly 5 on the central base 41;

[0100] Step five: using the hydraulic lifting device to control the rotation of the U-shaped steel column body 21, and vertically lifting the U-shaped steel beam body 31;

[0101] Step six: using the auxiliary supporting assembly 7 to stably support the two sides of the U-shaped steel beam body 31;

[0102] Step seven: when the end of the U-shaped steel column body 21 away from the ground fully matches the side of the limiting block 34, the splicing operation of the combined steel frame is completed;

[0103] Step eight: using the folding driving assembly 8 to lift the precise positioning assembly 6 on the pre-positioning assembly 5, and stably supporting the middle side of the U-shaped steel beam body 31.

[0104] Among them, the two tensioning seats 47, the two insertion sleeves 61, the Z-shaped steel column 73 and the supporting steel column 74, the two connecting seats I 81 and the two connecting seats II 82 are detachably fixed and installed by fasteners such as stud nut sleeve kits.

[0105] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A combined steel frame facilitating splicing, comprising a set of two steel column assemblies (2) and a steel beam assembly (3) installed on the upper sides of the two steel column assemblies (2), the lower ends of the steel column assemblies (2) being connected with the ground through first ground connecting bases (1), characterized in that: the end of the steel column assembly (2) close to the ground is rotatably connected with the edge base (11) of the main body of the first ground connecting base (1); one end of the U-shaped steel column main body (21) of the steel column assembly (2) is inserted into the U-shaped steel beam main body (31) of the steel beam assembly (3) and is slidably connected with the U-shaped steel beam main body (31); the inner sides of both ends of the U-shaped steel beam main body (31) are respectively provided with a limiting block (34), and the end of the U-shaped steel column main body (21) away from the ground can be attached to the side of the limiting block (34); the outer side of the lower end of the U-shaped steel column main body (21) is fixedly connected with a lifting sleeve (22), the two sides of the lifting sleeve (22) are respectively fixedly connected with a plurality of cross arms (23), the cross arms (23) extend along the horizontal direction to the outside of the lifting sleeve (22), and the lower end of the cross arm (23) is abutted with a hydraulic lifting device installed on the ground. the end of the steel column assembly (2) close to the ground is rotatably connected with the rotating shaft (12) on the edge base (11), and the end of the steel column assembly (2) close to the ground is detachably fixedly connected with the edge base (11) through the positioning pin (13); the end of the U-shaped steel column main body (21) away from the ground is fixedly connected with an end steel plate (211), the end steel plate (211) is inserted into the U-shaped steel beam main body (31), and the end steel plate (211) is provided with a curved surface I (212) abutting against the inner side of the U-shaped steel beam main body (31). a second ground connecting base (4) is installed on the ground between the two first ground connecting bases (1), the second ground connecting base (4) is provided with a pre-positioning assembly (5), a positioning steel column (53) of the pre-positioning assembly (5) penetrates through a conical hole (33) on the U-shaped steel beam main body (31), and an annular gap is formed between the outer side of the positioning steel column (53) and the inner side of the conical hole (33); the positioning steel column (53) is detachably fixedly connected with a supporting steel column (51) of the main body of the pre-positioning assembly (5), the lower end of the supporting steel column (51) is connected with a central base (41) of the main body of the second ground connecting base (4), and the central base (41) is installed on the ground through a plurality of embedded nails (42).

2. The combination steel frame for easy assembly according to claim 1, wherein: the lower end of the supporting steel column (51) is provided with a disc, the side of the supporting steel column (51) is detachably fixedly connected with two circular rings (52), and the two circular rings (52) are respectively located on the upper and lower sides of the disc; the central base (41) is provided with an inward extending ridge (43), the upper and lower sides of the inward extending ridge (43) are respectively detachably fixedly connected with limiting rings (45), the disc is slidably connected in the space surrounded by the inner side of the inward extending ridge (43) and the side of the two limiting rings (45) close to the inward extending ridge (43), and the sides of the two circular rings (52) are respectively attached to the sides of the two limiting rings (45) away from the inward extending ridge (43).

3. The combination steel frame for easy assembly according to claim 1, wherein: ​ ​ 4. The modular steel building frame for ease of assembly of claim 3, wherein: ​ ​ Both sides of the support steel column (51) are respectively provided with a tension seat (47), the tension seat (47) is clamped on the side of the support steel column (51), the two tension seats (47) are detachably fixedly connected with each other, the side of the tension seat (47) is welded and fixedly connected with a plurality of springs, the other end of the spring is welded and fixedly connected with a seat plate (48), and the seat plate (48) is detachably fixedly connected with the upper end of the central base (41).

5. The modular steel building frame for ease of assembly of claim 4, wherein: The precision positioning assembly (6) is vertically and slidably installed on the positioning steel column (53), and the main body of the precision positioning assembly (6) is two insertion sleeves (61) which are symmetrically and slidably connected on both sides of the positioning steel column (53), and the two insertion sleeves (61) are detachably fixedly connected with each other. The inclined surface on the top outer side of the insertion sleeve (61) can abut against the conical surface on the inner side of the lower end of the conical hole (33), and the top of the insertion sleeve (61) can be embedded into the annular gap between the outer side of the positioning steel column (53) and the conical hole (33).

6. The combination steel frame for ease of splicing as claimed in claim 5 wherein: A supporting ridge (62) is installed on the side of the insertion sleeve (61), and the supporting ridge (62) can be attached to the inner side of the U-shaped steel beam body (31).

7. The combined steel frame for facilitating splicing according to claim 6 or 5, characterized in that: The precision positioning assembly (6) and the positioning steel column (53) are provided with a folding driving assembly (8) therebetween. The folding driving assembly (8) comprises a connecting seat I (81), a connecting seat II (82) and a plurality of splicing sleeves (83), the connecting seat I (81) is detachably fixedly connected with the insertion sleeve (61), the connecting seat II (82) is detachably fixedly connected with the positioning steel column (53), two splicing sleeves (83) are rotatably installed on the connecting seat I (81) and the connecting seat II (82) respectively, the ends of the splicing sleeves (83) located on the upper and lower sides are respectively provided with arc surfaces II (831) which can be attached to each other, and the outer side of the splicing sleeve (83) is connected with a driving column (85) through a lateral extension arm (84). The two driving columns (85) located on the left side are slidably connected in the sliding groove I of the connecting groove arm (86), the two driving columns (85) located on the right side are slidably connected in the sliding groove II of the movable folding groove arm (87), a screw rod (88) is rotatably installed on the connecting groove arm (86), and the screw rod (88) is in threaded transmission connection with the movable folding groove arm (87).

8. The modular steel building frame for ease of erection according to claim 3 or 1, wherein: The steel column assembly (2) is rotatably installed with an auxiliary supporting assembly (7), and in the state that the end of the U-shaped steel column body (21) away from the ground is not attached to the side of the limiting block (34), the end of the auxiliary supporting assembly (7) can be attached to the side of the limiting block (34).

9. The combination steel frame for ease of splicing of claim 8, wherein: The U-shaped steel column body (21) is rotatably installed with a hollow steel pipe (71) and a Z-shaped steel column (73), and the Z-shaped steel column (73) penetrates the side of the U-shaped steel column body (21). The end of the Z-shaped steel column (73) located on the inner side of the U-shaped steel column body (21) is rotatably installed with an adjusting steel strip (72), and the adjusting steel strip (72) is slidably connected with the hollow steel pipe (71). The end of the Z-shaped steel column (73) located on the outer side of the U-shaped steel column body (21) is detachably fixedly connected with a supporting steel column (74), and one side of the end of the supporting steel column (74) can be attached to the side of the limiting block (34).

10. A method of using the modular steel frame for ease of assembly according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: installing a first ground connecting base (1) on the ground; Step 2: installing a U-shaped steel column body (21) on the first ground connecting base (1); Step 3: erecting a U-shaped steel beam body (31) on the upper sides of the two U-shaped steel column bodies (21); Step 4: using a hydraulic lifting device to control the rotation of the U-shaped steel column body (21) and vertically lift the U-shaped steel beam body (31); Step 5: after the end of the U-shaped steel column body (21) away from the ground fully matches with the side of the limiting block (34), the splicing operation of the combined steel frame is completed.

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