Steel truss integral lifting stress conversion device

Abstract

The utility model provides an integral lifting stress conversion device for a steel truss. The integral lifting stress conversion device comprises a saddle, a plurality of dowel bars and a connecting seat which are sequentially arranged from bottom to top, an arc-shaped groove is formed in the top of the saddle and used for containing the steel truss. An anti-skid component is arranged in the arc-shaped groove, the top of the anti-skid component is connected with the bottom of the steel truss, and the bottom of the anti-skid component penetrates out and is fixed to the bottom of the saddle. The connecting seat is arranged above the saddle, and the connecting seat and the saddle are connected through a plurality of dowel bars; a penetrating channel is formed in the connecting base and used for allowing a steel strand of a center hole jack to penetrate through, and therefore lifting pulling force of the center hole jack is transmitted to the saddle through the dowel bars and then converted into upward pressure on the steel truss. According to the utility model, the upward pulling force provided by the lifting jack through the steel strand can be safely and stably converted into the upward pressure obtained by the lower chord node of the steel truss.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a steel truss integral lifting force conversion device. Background Art

[0002] For large-span steel truss roofs, a common construction method is to use an integral lifting method to reduce construction costs and speed up construction. In this method, lifting jacks are located above the truss nodes, providing upward tension through steel strands. However, the steel trusses are designed to be subjected to upward pressure on the truss bottom chord nodes. This requires a force conversion component to convert the lifting force of the lifting jacks into upward pressure on the truss bottom chord. However, existing force conversion components are prone to slippage or rotation during construction, making it impossible to stably and safely convert the lifting force. Summary of the Invention

[0003] In view of this, the utility model proposes a steel truss integral lifting force conversion device, which aims to solve the problem that the lifting force conversion parts are prone to slippage or rotation during construction, cannot stably and safely realize the conversion of lifting tension, and are inconvenient to dismantle later.

[0004] The utility model proposes a steel truss integral lifting force conversion device, comprising: a saddle, a plurality of force transmission rods and a connecting seat arranged in sequence from bottom to top; wherein,

[0005] The top of the saddle is provided with an arc-shaped groove for placing the steel truss;

[0006] An anti-slip member is provided in the arc-shaped groove, the top of the anti-slip member is connected to the bottom of the steel truss, and the bottom of the anti-slip member passes through and is fixed to the bottom of the saddle, so as to prevent the saddle and the lower chord of the steel truss from rotating and sliding after being subjected to force;

[0007] The connecting seat is arranged above the saddle, and the two are connected by a plurality of force transmission rods;

[0008] The connecting seat is provided with a through channel for passing the steel strand of the through jack, so that the lifting pulling force of the through jack is transmitted to the saddle through each of the force transmission rods, and then converted into an upward pressure on the steel truss.

[0009] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the saddle includes: a bottom plate; wherein,

[0010] The bottom plate is provided with a plurality of first connection holes for inserting the force transmission rods;

[0011] Two first transverse ribs are provided on the bottom plate; a plurality of first longitudinal ribs are respectively provided on the outer sides of the two first transverse ribs, and a plurality of first intermediate ribs are provided between the two first transverse ribs. Each first intermediate rib is provided in one-to-one correspondence with each first longitudinal rib, and an arc-shaped groove is provided on the upper part of each first intermediate rib.

[0012] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, a clamping groove is provided in the arc groove of the two first intermediate ribs located in the middle, for clamping the anti-slip component.

[0013] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the connecting seat includes: an upper connecting plate and a lower connecting plate; wherein,

[0014] The upper connecting plate is provided with a plurality of second connecting holes, each of which is arranged in a one-to-one correspondence with each of the first connecting holes, for inserting the force transmission rods;

[0015] The upper connecting plate and the lower connecting plate are provided with through holes for passing the steel strands;

[0016] Two second transverse ribs are provided between the upper connecting plate and the lower connecting plate;

[0017] A plurality of second longitudinal ribs are respectively provided on the outer sides of the two second transverse ribs, a plurality of second intermediate ribs are provided between the two second transverse ribs, and each second intermediate rib is provided in one-to-one correspondence with each second longitudinal rib.

[0018] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the anti-slip component includes: an anti-slip plate, a fixing rod and a pressure plate connected to each other; wherein,

[0019] The anti-skid plate is axially arranged at the bottom of the node of the lower chord of the steel truss;

[0020] The fixing rod is connected to the bottom of the anti-slip plate in a vertical direction, and an internal threaded tube is provided in the fixing rod;

[0021] A reserved hole is provided at the bottom of the saddle for the fixing rod to pass through and be connected to the pressing plate via bolts.

[0022] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the anti-skid plate is a U-shaped steel plate.

[0023] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the fixing rod is a square columnar structure.

[0024] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, the pressure plate is a square plate structure, and support blocks are provided at its four corners.

[0025] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, both ends of the force transmission rod are provided with external threads.

[0026] Furthermore, in the above-mentioned steel truss integral lifting force conversion device, an anchor is provided at the bottom of the connecting seat to fix the steel strand.

[0027] The steel truss integral lifting force conversion device in the present invention places the lower chord of the steel truss on the saddle, connects a through-hole jack above the connecting seat, connects multiple force transmission rods between the connecting seat and the saddle, and transmits the pulling force of the upward lifting jack through the steel strand connecting seat, and then transmits it to the saddle through the force transmission rod. The node of the lower chord of the steel truss is located above the saddle, thereby converting it into an upward pressure on the steel truss. At the same time, the provision of an anti-slip component can effectively prevent the saddle from slipping or rotating due to uneven force during the force-bearing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 A schematic diagram of the structure of the steel truss integral lifting force conversion device provided by an embodiment of the utility model in an application state;

[0030] Figure 2 A schematic structural diagram of a steel truss integral lifting force conversion device provided by an embodiment of the present utility model;

[0031] Figure 3 A schematic diagram of a plane view of a saddle in a steel truss integral lifting force conversion device provided by an embodiment of the present invention;

[0032] Figure 4 A bottom-up plan view of a saddle in a steel truss integral lifting force conversion device provided by an embodiment of the present invention;

[0033] Figure 5 for Figure 3 Middle aa section;

[0034] Figure 6 for Figure 3 Middle bb cross-section;

[0035] Figure 7 for Figure 3 Middle cc cross-section;

[0036] Figure 8 A plan view of a steel strand connection seat in a steel truss integral lifting force conversion device provided by an embodiment of the present invention;

[0037] Figure 9 A bottom-up plan view of a steel strand connection seat in a steel truss integral lifting force conversion device provided by an embodiment of the present invention;

[0038] Figure 10 for Figure 8 dd cross-section in;

[0039] Figure 11 for Figure 8 ee profile in;

[0040] Figure 12 for Figure 10 ff section diagram in;

[0041] Figure 13 This is an elevation view of the steel truss in the steel truss integral lifting force conversion device provided by an embodiment of the present utility model;

[0042] Figure 14 for Figure 13 gg profile in;

[0043] Figure 15 for Figure 13 hh cross-section diagram in. DETAILED DESCRIPTION

[0044] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] See Figure 1 、 Figure 2 、 Figures 13 to 15The steel truss overall lifting force conversion device of the utility model embodiment includes: a saddle 1, a plurality of force transmission rods 6 and a connecting seat 2 arranged in sequence from bottom to top; wherein, the top of the saddle 1 is provided with an arc groove 10 for placing the steel truss 5; an anti-slip member 4 is provided in the arc groove 10, the top of the anti-slip member 4 is connected to the bottom of the steel truss 5, and the bottom of the anti-slip member 4 passes through and is fixed to the bottom of the saddle 1 to prevent the saddle 1 and the lower chord 51 of the steel truss 5 from rotating and sliding after being subjected to force; the connecting seat 2 is arranged above the saddle 1, and the two are connected by a plurality of force transmission rods 6; a penetration channel 200 is provided in the connecting seat 2 for penetrating the steel strand 7 of the through-core jack 3, so that the lifting pulling force of the through-core jack 3 is transmitted to the saddle 1 through each of the force transmission rods 6, and then converted into an upward pressure on the steel truss 5.

[0046] Specifically, the saddle 1 and the connecting seat 2 can both be welded from steel plates, with several horizontal and vertical ribs provided on the bottom steel plate and welded together into a whole. Multiple connection holes are provided at the corners of the saddle 1 and the connecting seat 2, through which the force transmission rods 6 can be passed. A through-hole 200 is provided in the middle of the connecting seat 2 to pass the steel strand of the through-hole jack 3. An anchor 8 is provided at the bottom of the connecting seat 2 corresponding to the through-hole 200 to secure the steel strand 7. The anchor can be any anchor for securing the steel strand 7 in the prior art, and this embodiment does not limit this.

[0047] The connecting seat 2 is located above the saddle 1 , and the height difference between the connecting seat 2 and the saddle 1 can be determined according to the actual height of the steel truss 5 .

[0048] More specifically, combined Figure 3-7 The saddle 1 includes: a bottom plate 11; wherein, the bottom plate 11 is provided with a plurality of first connecting holes 111 for inserting the force transmission rod 6; two first transverse ribs 112 are provided on the bottom plate 11; a plurality of first longitudinal ribs 113 are respectively provided on the outer sides of the two first transverse ribs 112, and a plurality of first intermediate ribs 114 are provided between the two first transverse ribs 112, each of the first intermediate ribs 114 is arranged in a one-to-one correspondence with each of the first longitudinal ribs 113, and an arc groove 10 is provided on the upper part of each of the first intermediate ribs 114.

[0049] The bottom plate 11 may be a square plate, the first transverse ribs 112 may be rectangular plates, the first longitudinal ribs 113 may be right-angled trapezoidal plates, and the first longitudinal ribs are arranged at equal intervals.

[0050] Each first intermediate rib 114 may be a rectangular plate with an arcuate groove 10 provided on the top. The arcuate groove 10 on each first intermediate rib 114 has the same curvature so as to fit with the outer wall of the lower chord 51 of the steel truss 5 .

[0051] In practice, a reserved hole 102 is opened in the middle of the bottom plate 11 for passing the fixing rod 42 of the anti-slip member 4 .

[0052] Furthermore, the arc grooves 10 of the two first intermediate ribs 114 in the middle are provided with a clamping groove 101 for clamping the anti-slip plate 41 of the anti-slip member 4. The clamping groove 101 is U-shaped and matches the shape of the anti-slip plate 41 of the anti-slip member 4.

[0053] In this embodiment, both ends of the force transmission rod 6 are provided with external threads 61, which are respectively tightened and fixed to the top of the connecting base 2 and the bottom of the saddle 1 by two-way locknuts 9. Pads 100 are also provided at the top of the connecting base 2 and the bottom of the saddle 1. In this embodiment, the force transmission rod 6 is threaded steel.

[0054] The utility model adopts common engineering materials such as steel plates, precision-rolled threaded steel bars, bolts, etc., which are easily available and reduce production costs.

[0055] It can be obviously concluded from the above that the steel truss overall lifting force conversion device provided in this embodiment places the lower chord of the steel truss on the saddle, connects a through-hole jack above the connecting seat, and connects multiple force transmission rods between the connecting seat and the saddle. The upward pulling force of the jack is transmitted to the steel strand connecting seat through the steel wire rope, and then transmitted to the saddle through the force transmission rod. The node of the lower chord of the steel truss is located above the saddle, thereby converting it into an upward pressure on the steel truss. At the same time, the provision of anti-slip components can effectively prevent the saddle from slipping or rotating due to uneven force during the force-bearing process.

[0056] See also Figures 8 to 12 In the above embodiment, the connecting seat 2 includes: an upper connecting plate 21 and a lower connecting plate 22; wherein, the upper connecting plate 21 is provided with a plurality of second connecting holes 211, and each second connecting hole 211 is arranged in a one-to-one correspondence with each first connecting hole 111, for inserting the force transmission rod 6; the upper connecting plate 21 and the lower connecting plate 22 are provided with a through-hole to form a through-channel for passing the steel strand 7; two second transverse ribs 201 are arranged between the upper connecting plate 21 and the lower connecting plate 22; a plurality of second longitudinal ribs 202 are respectively provided on the outer sides of the two second transverse ribs 201, and a plurality of second intermediate ribs 203 are arranged between the two second transverse ribs 201, and each second intermediate rib 203 is arranged in a one-to-one correspondence with each second longitudinal rib 202.

[0057] Specifically, the upper connecting plate 21 may be a square plate, and the lower connecting plate 22 may be a rectangular plate. The edge of the upper connecting plate 21 may extend to the edge of the lower connecting plate 22.

[0058] The second transverse ribs 201 have the same structure as the first transverse ribs 112, and the first longitudinal ribs 113 have the same structure as the second longitudinal ribs 202. Each second intermediate rib 203 may be a rectangular plate.

[0059] Continue reading Figure 1-2 、 Figure 13-15 In the above embodiment, the anti-slip component 4 includes: an anti-slip plate 41, a fixing rod 42 and a pressure plate 43 connected to each other; wherein, the anti-slip plate 41 is axially arranged at the bottom of the node of the lower chord 51 of the steel truss 5; the fixing rod 42 is connected to the bottom of the anti-slip plate 41 in the vertical direction, and an internal threaded tube 44 is provided in the fixing rod 42; a reserved hole 102 is provided at the bottom of the saddle 1 for the fixing rod 42 to pass through, and is connected to the pressure plate 43 by a bolt 45.

[0060] Specifically, the anti-skid plate 41 is engaged with the slot 101 on the saddle 1. The anti-skid plate 41 can be a U-shaped steel plate, arranged along the length of the lower chord 51 of the steel truss 5, with its opening contacting the lower chord 51. In other words, the length of the anti-skid plate 41 along the lower chord 51 matches the spacing between the two first intermediate ribs 114 at the ends of the saddle 1. The top of the fixing rod 42 is welded to the bottom of the anti-skid plate 41.

[0061] The ends of the anti-slip plate 41 can abut against the sidewalls of the two first intermediate ribs 114 located at either end to prevent relative sliding between the rear saddle 1 and the lower chord 51. The anti-slip plate 41 can be welded to the lower chord 51. The fixing rod 42 is a square columnar structure connected to the pressure plate 43 through a reserved hole 102 defined in the bottom of the saddle 1. The reserved hole 102 can be a square hole. The pressure plate 43 is a square plate-like structure with support blocks provided at each of its four corners.

[0062] During specific implementation, the anti-skid plate 41 is stuck in the slot 101 in the cross-sectional direction of the lower chord rod 51 to prevent the saddle 1 and the lower chord rod 51 from relative rotation after being subjected to force; the anti-skid plate 41 is pressed against the inner side of the first middle rib 114 at both ends of the saddle 1 along the length direction of the lower chord rod 51 to prevent the saddle 1 and the lower chord rod 51 from relative sliding after being subjected to force; the fixing rod 42 passes through the reserved hole 102 on the anti-skid plate 41, and the bottom is fixed by bolts passing through the pressure plate 43 and tightened in the internal threaded tube 44.

[0063] It should be noted that Figure 13 Middle: 51 is the lower chord of the steel truss, 52 is the vertical rod of the steel truss, and 53 is the diagonal rod of the steel truss.

[0064] In summary, the utility model can safely and stably convert the upward pulling force provided by the lifting jack through the steel strand into the upward pressure obtained by the lower chord node of the steel truss, so that the actual force mode of the steel truss is consistent with the designed force mode. At the same time, it can effectively prevent the relative slippage or rotation of the saddle, ensuring the safety of the lifting process.

[0065] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A steel truss integral lifting force conversion device, characterized in that: include: The saddle, multiple force transmission rods and connecting seats are arranged in sequence from bottom to top; among them, The top of the saddle is provided with an arc-shaped groove for placing the steel truss; An anti-slip member is provided in the arc-shaped groove, the top of the anti-slip member is connected to the bottom of the steel truss, and the bottom of the anti-slip member passes through and is fixed to the bottom of the saddle, so as to prevent the saddle and the lower chord of the steel truss from rotating and sliding after being subjected to force; The connecting seat is arranged above the saddle, and the two are connected by a plurality of force transmission rods; The connecting seat is provided with a through channel for passing the steel strand of the through jack, so that the lifting pulling force of the through jack is transmitted to the saddle through each of the force transmission rods, and then converted into an upward pressure on the steel truss.

2. The steel truss integral lifting force conversion device according to claim 1 is characterized in that: The saddle comprises: a bottom plate; wherein, The bottom plate is provided with a plurality of first connection holes for inserting the force transmission rods; Two first transverse ribs are provided on the bottom plate; a plurality of first longitudinal ribs are respectively provided on the outer sides of the two first transverse ribs, and a plurality of first intermediate ribs are provided between the two first transverse ribs. Each first intermediate rib is provided in one-to-one correspondence with each first longitudinal rib, and an arc-shaped groove is provided on the upper part of each first intermediate rib.

3. The steel truss integral lifting force conversion device according to claim 2 is characterized in that: The arc grooves of the two first middle ribs located in the middle are provided with clamping grooves for clamping the anti-slip components.

4. The steel truss integral lifting force conversion device according to claim 2 is characterized in that: The connecting seat includes: an upper connecting plate and a lower connecting plate; wherein, The upper connecting plate is provided with a plurality of second connecting holes, each of which is arranged in a one-to-one correspondence with each of the first connecting holes, for inserting the force transmission rods; The upper connecting plate and the lower connecting plate are provided with through holes for passing the steel strands; Two second transverse ribs are provided between the upper connecting plate and the lower connecting plate; A plurality of second longitudinal ribs are respectively provided on the outer sides of the two second transverse ribs, a plurality of second intermediate ribs are provided between the two second transverse ribs, and each second intermediate rib is provided in one-to-one correspondence with each second longitudinal rib.

5. The steel truss integral lifting force conversion device according to claim 1 is characterized in that: The anti-slip component includes: an anti-slip plate, a fixing rod and a pressing plate connected to each other; wherein, The anti-skid plate is axially arranged at the bottom of the node of the lower chord of the steel truss; The fixing rod is connected to the bottom of the anti-slip plate in a vertical direction, and an internal threaded tube is provided in the fixing rod; A reserved hole is provided at the bottom of the saddle for the fixing rod to pass through and be connected to the pressing plate via bolts.

6. The steel truss integral lifting force conversion device according to claim 5 is characterized in that: The anti-skid plate is a U-shaped steel plate.

7. The steel truss integral lifting force conversion device according to claim 5 is characterized in that: The fixing rod is a square columnar structure.

8. The steel truss integral lifting force conversion device according to claim 5 is characterized in that: The pressing plate is a square plate structure, and support blocks are provided at the four corners.

9. The steel truss integral lifting force conversion device according to claim 1 is characterized in that: Both ends of the force transmission rod are provided with external threads.

10. The steel truss integral lifting force conversion device according to claim 1, characterized in that: An anchor is provided at the bottom of the connecting seat for fixing the steel strand.

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