Steel truss gusset clamp and lattice truss support structure

Abstract

This utility model relates to a gusseted clamp for steel trusses. A row of first bolts passes through the upper end plate of the C-shaped member, and first nuts mate with the first bolts are provided on both sides of the upper end plate. The bottom of the first bolts is fixedly connected to a first baffle. A row of fixing ribs is fixed to the inner side of the clamp body, with the working surface of the fixing ribs perpendicular to the inner side of the clamp body. These ribs are used to position the flange of the main support during installation and to vertically lock the flange after installation. The movable parts of the clamp include a second bolt, a second baffle, and a second nut. A row of second bolts passes through the lower end plate of the C-shaped member, and a first nut mates with the second bolts is provided on the upper side and a second nut mates with the second bolts on the lower side. The upper end of the second bolt is fixedly connected to the second baffle. The first and second baffles clamp the flange of the main support. The second bolt passes through both the gusseted plate and the lower end plate and is locked in place by the first nut on the upper side and the second nut on the lower side.

Description

Technical Field

[0001] This utility model relates to a steel truss gusset plate clamp and a lattice truss support structure, belonging to the field of steel support technology for foundation pits. Background Technology

[0002] Currently, steel truss structures are widely used in deep foundation pit engineering. As an important load-bearing component in steel truss structures, lattice main supports on the same side generally require gusseted plate connections. On site, the lattice main supports and gusseted plates are usually assembled, then hoisted and positioned, placed on the support steel beams, and finally assembled with the steel nodes.

[0003] Lattice main supports typically have pre-drilled holes for connection with gusset plates. However, during structural layout, collisions between the support steel beams, other structural components, and gusset plates are inevitable, or other site conditions may prevent the gusset plates from being fixed according to the pre-drilled holes. Since the gusset plate installation holes on the main supports are predetermined, the installation of the gusset plate at the point of interference can generally only be considered. As a result, an imbalance in the stress on a location lacking a gusset plate will occur, affecting the design requirements and overall integrity of the lattice main supports.

[0004] In response, Chinese patent document CN114703864A, published on July 5, 2022, discloses a "steel splicing device" that can install gusset plates at specific locations on the main support, but it still has the following problems:

[0005] 1. The force is applied in two mutually perpendicular directions, and the force on the fixture system is not direct enough;

[0006] 2. The overall rigidity of the fixture is relatively low;

[0007] 3. The positioning of the fixture during installation is not accurate enough; Utility Model Content

[0008] The purpose of this invention is to provide a steel truss lacing clamp and a lattice truss support structure. This design eliminates the need for bolt holes on the flanges of the lattice column main support (I-beam), allowing the lacing plate to be connected to any selected position on the lattice column main support. This avoids the need to cancel the lacing plate installation at a certain point due to collisions with other components on the lattice main support, resulting in a more balanced force distribution and better overall design of the lattice truss support structure. Simultaneously, the force distribution mode is more direct, with improved force transmission efficiency through the frictional force of the bolt baffles at both ends. The overall rigidity of the clamp is increased, and installation is simpler. Part positioning is convenient, requiring only the clamp body and moving parts; the clamp body can be directly positioned using fixed ribs.

[0009] The present invention adopts the following technical solution:

[0010] A steel truss gusset clamp includes a clamp body 1 and a clamp movable part 2. The clamp body 1 includes an inverted U-shaped component, first bolts 101, first nuts 102, and a baffle 103. A row of first bolts 101 passes through the upper end plate of the inverted U-shaped component, and first nuts 102 that mate with the first bolts are provided on both sides of the upper end plate. The bottom of the first bolts 101 is fixedly connected to the first baffle 103. A row of fixing ribs 104 is fixed to the inner side of the clamp body 1. The working surface of the fixing ribs 104 is perpendicular to the inner side of the clamp body 1, and is used to position the flange of the main support 3 during installation and to vertically lock the flange after installation. The movable component 2 of the clamp includes a second bolt 202, a second baffle 201, and a second nut 203. The lower end plate of the C-shaped component passes through a row of second bolts 202. The upper side of the lower end plate is provided with a first nut that mates with the second bolts 202, and the lower side is provided with a second nut 203 that mates with the second bolts 202. The upper end of the second bolt 202 is fixedly connected to the second baffle 201. The first baffle 103 and the second baffle 201 clamp the flange portion of the main support 3. The second bolt 202 passes through both the gusset plate 4 and the lower end plate, and is locked and fixed by the upper first nut 102 and the lower second nut 203.

[0011] By using the steel truss lacing plate clamp, the bolt holes on the flange of the lattice column main support (I-beam) can be ignored, and the lacing plate can be connected to any selected position on the lattice column main support. This avoids the need to cancel the installation of the lacing plate at a certain point due to collision with other components on the lattice main support, thus making the lattice truss support structure more balanced in force and better in overall design.

[0012] Preferably, a pair of steel trusses are fixed from the flanges on both sides of the main support 3 using gusseted clamps to form a clamping unit. This makes the force on the main support more balanced.

[0013] Furthermore, the multiple clamping units are arranged laterally, with equal spacing between adjacent clamping units. This makes the force on the main support more balanced.

[0014] Preferably, the fixing rib 104 is in the shape of a vertical triangle. On the one hand, the vertical triangle structure is more stable, and on the other hand, it can better abut against the flange of the main support during installation, thus making the positioning more accurate.

[0015] Preferably, the first baffle 103 and the second baffle 201 are of the same shape and size, and their positions correspond. This makes the force distribution more stable.

[0016] Preferably, the first nuts 102 that cooperate with the first bolts on both sides of the upper end plate are welded and fixed to both sides of the upper end plate; the first nuts 102 that cooperate with the second bolts 202 on the upper side of the lower end plate are welded and fixed to the upper side of the lower end plate, so that the clamp body 1 becomes an integral component.

[0017] A lattice truss support structure for the above-mentioned steel truss lacing clamp further includes a main support 3 and a lacing plate 4; the main support 3 is the main support of the lattice truss and is in the form of an I-beam structure.

[0018] Preferably, the cross-section of the gusset plate 4 is U-shaped, and a through hole is provided on it for the second bolt 202 to pass through.

[0019] Preferably, along the length of the main support 3, multiple clamping units are arranged at equal intervals, each formed by a pair of steel truss lacing plates fixing the main support 3 from the flanges on both sides.

[0020] Furthermore, the width of the gusset plate 4 is equal to or slightly greater than the length of a clamping unit.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1) The lacing plate clamp effectively solves the problem of lacing plate installation and steel support collision encountered in steel truss design, which prevents the lacing plate from being installed. It can be installed at any position on the steel truss, thus ensuring the overall stability of the steel truss. The lacing plate clamp is connected by bolts, making installation convenient.

[0023] 2) The lacing plate clamps can be produced in a standardized manner according to the steel truss dimensions, reducing design difficulty;

[0024] 3) The vertical triangular fixing rib has the functions of abutment positioning during installation and locking after installation positioning, which has a dual design effect.

[0025] 4) It does not only achieve the function of "clamping", but also "clamping" the main support flange and connecting and fixing the lacing plate.

[0026] 5) It has good flexibility and high reliability.

[0027] 6) The force transmission mode is more direct, and the force transmission efficiency is improved by the frictional force of the bolt baffles at both ends.

[0028] 7) Improved overall rigidity of the fixture, making installation easier;

[0029] 8) Parts are easy to position, consisting of only the fixture body and the fixture's moving parts. The fixture body can be directly positioned using fixed ribs. Attached Figure Description

[0030] Figure 1This is the front view of the steel truss lacing clamp of this utility model.

[0031] Figure 2 This is a side view of the steel truss lacing clamp of this utility model.

[0032] Figure 3 This is the front view of fixture body 1.

[0033] Figure 4 This is the front view of the movable part 2 of the clamp.

[0034] Figure 5 This is a diagram of the installation process. Figure 1 .

[0035] Figure 6 This is a diagram of the installation process. Figure 2 .

[0036] Figure 7 This is a diagram of the installation process. Figure 3 .

[0037] Figure 8 This is a diagram of the installation process. Figure 4 (The clamping mechanism failed to complete the clamping action on the flange).

[0038] Figure 9 This is a diagram of the installation process. Figure 5 (The clamping mechanism has completed the clamping action on the flange).

[0039] Figure 10 This is a schematic diagram of a steel truss gusset clamp with two holes.

[0040] Figure 11 This is a schematic diagram of a steel truss gusset clamp with three holes.

[0041] Figure 12 This is a schematic diagram of a steel truss gusset clamp with four holes.

[0042] Figure 13 This utility model describes the three-dimensional installation of the steel truss gusset plate clamp after assembly. Figure 1 .

[0043] Figure 14 This utility model describes the three-dimensional installation of the steel truss gusset plate clamp after assembly. Figure 2 .

[0044] Figure 15 This utility model describes the three-dimensional installation of the steel truss gusset plate clamp after assembly. Figure 3 .

[0045] In the picture:

[0046] 1. Fixture body; 101. First bolt; 102. First nut; 103. First baffle; 104. Fixing rib;

[0047] 2. Movable parts of the clamp: 201. Second baffle; 202. Second bolt; 203. Second nut;

[0048] 3. (Main bracing of lattice steel supports);

[0049] 4. Adhesive board. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] See Figure 1-2 , Figure 1 and Figure 2 The front and side views of the gusset plate clamps for the steel truss are shown.

[0052] The steel truss lacing clamp includes a clamp body 1 and a clamp movable part 2;

[0053] See Figure 3 The fixture body 1 includes a U-shaped component, a first bolt 101, a first nut 102, and a baffle 103;

[0054] See Figure 1 The upper end plate of the C-shaped part passes through a row of first bolts 101, and the upper end plate is provided with first nuts 102 that cooperate with the first bolts on both sides; the bottom of the first bolts 101 is fixedly connected to the first baffle 103; a row of fixing ribs 104 is fixed on the inner side of the fixture body 1, and the working surface of the fixing ribs 104 is perpendicular to the inner side of the fixture body 1.

[0055] For the function of the fixing rib 104, please refer to the attached document. Figure 8 The fixing rib 104 is used to position the flange of the main support 3 during installation and to vertically lock the flange after installation.

[0056] See Figure 4 The movable component 2 of the clamp includes a second bolt 202, a second baffle 201, and a second nut 203;

[0057] Combination Figure 3-5The lower end plate of the C-shaped component passes through a row of second bolts 202. The upper side of the lower end plate is provided with a first nut that mates with the second bolts 202, and the lower side is provided with a second nut 202 that mates with the second bolts 202. The upper end of the second bolts 202 is fixedly connected to the second baffle 201. The first baffle 103 and the second baffle 201 clamp the flange portion of the main support 3. The second bolts 203 pass through both the gusset plate 4 and the lower end plate, and are locked and fixed by the first nut 102 on the upper side and the second nut 203 on the lower side.

[0058] By using the steel truss lacing plate clamp, the bolt holes on the flange of the lattice column main support (I-beam) can be ignored, and the lacing plate can be connected to any selected position on the lattice column main support. This avoids the need to cancel the installation of the lacing plate at a certain point due to collision with other components on the lattice main support, thus making the lattice truss support structure more balanced in force and better in overall design.

[0059] See Figure 6-8 A pair of steel trusses are fixed to the flanges on both sides of the main support 3 using gusseted clamps to form a clamping unit. This makes the force on the main support more balanced.

[0060] See Figure 8-9 The clamping units are arranged laterally, with equal spacing between adjacent units. This makes the force on the main support more balanced.

[0061] See Figure 3 and Figure 6 The fixing rib 104 is in the shape of a vertical triangle. On the one hand, the vertical triangle structure is more stable, and on the other hand, it can better resist the flange of the main support during installation, thus making the positioning more accurate.

[0062] See Figure 5 The first baffle 103 and the second baffle 201 are of the same shape and size, and their positions correspond. This makes the force distribution more stable.

[0063] See Figure 7-9 A lattice truss support structure using a steel truss lacing plate clamp also includes a main support 3 and a lacing plate 4; the main support 3 is the main support of the lattice truss and is in the form of an I-beam structure.

[0064] See Figure 13-14 The cross-section of the gusset plate 4 is U-shaped, and a through hole is provided on it for the second bolt 202 to pass through.

[0065] In this embodiment, multiple clamping units, each formed by a pair of steel truss gusset clamps fixing the main support 3 to the flanges on both sides of the main support 3, are arranged at equal intervals along the length of the main support 3. This is not shown in detail in the accompanying drawings.

[0066] The width of the gusset plate 4 is equal to or slightly greater than the length of a clamping unit (e.g., ...). Figure 14 ).

[0067] When machining the steel truss using the lacing plate fixture, holes are drilled according to the hole positions of the lacing plate and the corresponding positions of the main body. First nuts 102 are welded above and below the top holes, and first nuts 102 are also welded inside the bottom holes, making the fixture body 1 a single integral component. The first baffle 103 is pre-welded to the first bolt 101, and the second baffle 201 is also pre-welded and fixed to the second bolt 202. The function of the first and second baffles is to clamp the flange of the lattice main support by tightening the two bolts. The fixing ribs have two functions: one is to provide abutment positioning during installation, and the other is to vertically fix the main support and ensure the structural stability of the lattice main support.

[0068] The installation process is as follows:

[0069] S1. Tighten the first bolt 102 upwards, and screw the second bolt 202 into the fixture body 1 in advance;

[0070] S2. Place the fixture body 1 into the lattice main support flange and make the fixing rib 104 fit against the main support flange;

[0071] S3. Tighten the first bolt 101 so that the first baffle 103 on the first bolt 101 is in close contact with the main support flange.

[0072] S4. According to the hole positions of the lacing plates, insert the lacing plates into the second bolts 203 in sequence, and assemble the main support 3 according to the design requirements;

[0073] S5. Screw the second nut 203 into the second bolt 202;

[0074] S6. Tighten the second bolt 202 and make the second bolt 202 fit with the main support flange and the second nut 203 fit with the lacing plate.

[0075] This utility model of a steel truss lacing plate clamp allows for standardized production according to steel truss dimensions, reducing design complexity. The clamp effectively solves the problem of lacing plate installation errors caused by collisions with steel supports during steel truss design, preventing lacing plate installation. It allows for installation at any position on the steel truss, ensuring overall stability. The lacing plate clamps are connected by bolts and nuts, offering good flexibility and easy installation. The vertical triangular fixing ribs provide abutment positioning during installation and locking after positioning, ensuring ease of installation and structural stability. Simultaneously, the force distribution is more direct, with friction from the bolt baffles at both ends improving force transmission efficiency; it also increases the overall rigidity of the clamp, simplifying installation; and it facilitates component positioning, requiring only the clamp body and moving parts, with the fixing ribs directly positioning the clamp body.

[0076] It should also be pointed out that although it is called a "clamp", it does not only perform the function of "clamping", but also "clamping" the main support flange and connecting and fixing the lacing plate.

[0077] The above are preferred embodiments of the present utility model. Those skilled in the art can make various changes or improvements based on this. Without departing from the overall concept of the present utility model, these changes or improvements should all fall within the scope of protection claimed by the present utility model.

Claims

1. A gusset plate clamp for steel trusses, characterized in that: Includes the fixture body (1) and the fixture movable parts (2); The fixture body (1) includes an inverted part, a first bolt (101), a first nut (102), and a baffle (103); The upper end plate of the C-shaped component passes through a row of first bolts (101), and both sides of the upper end plate are provided with first nuts (102) that cooperate with the first bolts; the bottom of the first bolts (101) is fixedly connected to the first baffle (103); A row of fixing ribs (104) is fixed on the inner side of the fixture body (1). The working surface of the fixing ribs (104) is perpendicular to the inner side of the fixture body (1). They are used to position the flange of the main support (3) during installation and to vertically lock the flange after installation. The movable part (2) of the clamp includes a second bolt (202), a second baffle (201), and a second nut (203); the lower end plate of the C-shaped part passes through a row of the second bolts (202), and the upper side of the lower end plate is provided with a first nut (102) that mates with the second bolts (202), and the lower side is provided with a second nut (203) that mates with the second bolts (202); the upper end of the second bolts (202) is fixedly connected to the second baffle (201); The first baffle (103) and the second baffle (201) clamp the flange portion of the main support (3); The second bolt (202) passes through both the gusset plate (4) and the lower end plate, and is locked in place by the first nut (102) on the upper side and the second nut (203) on the lower side.

2. The steel truss gusset clamp as described in claim 1, characterized in that: A pair of steel truss gussets are fixed from the flanges on both sides of the main support (3) to form a clamping unit.

3. The steel truss gusset clamp as described in claim 2, characterized in that: Multiple clamping units are arranged laterally, with equal spacing between adjacent clamping units.

4. The steel truss gusset clamp as described in claim 1, characterized in that: The fixed rib (104) is in the shape of a vertical triangle.

5. The steel truss gusset clamp as described in claim 1, characterized in that: The first baffle (103) and the second baffle (201) are of the same shape and size and are in the same position.

6. The steel truss gusset clamp as described in claim 1, characterized in that: The first nuts (102) that cooperate with the first bolts are provided on both sides of the upper end plate and are welded and fixed to both sides of the upper end plate; the first nuts (102) that cooperate with the second bolts (202) are provided on the upper side of the lower end plate and are welded and fixed to the upper side of the lower end plate, so that the fixture body (1) becomes an integral part.

7. A lattice truss support structure employing the steel truss gusset clamp as described in any one of claims 1-6, characterized in that: It also includes main support (3) and gusset plate (4); the main support (3) is the main support (3) of the lattice truss, which is an I-beam structure.

8. The lattice truss support structure as described in claim 7, characterized in that: The cross-section of the gusset plate (4) is U-shaped, and a through hole is provided on it for the second bolt (202) to pass through.

9. The lattice truss support structure as described in claim 7, characterized in that: Along the length of the main support (3), multiple clamping units are arranged at equal intervals, which are formed by fixing a pair of steel truss gusset plates from the flanges on both sides of the main support (3).

10. The lattice truss support structure as described in claim 9, characterized in that: The width of the gusset plate (4) is equal to or slightly greater than the length of a clamping unit.

Images