A large plate girder support tool

Abstract

The utility model relates to plate girder support technical field, concretely relates to a big plate girder support frock. Its bottom fixedly connected with bottom plate has at the top of base, the recess is equipped with in the inside of bottom plate, a plurality of lugs are equipped with at the top of base inside bottom plate department, and the movable joint has stand in the recess inside of bottom plate and the outer wall between lug, the outer wall fixedly connected with support piece has at the bottom of stand, and support piece movable joint is in the recess inside of bottom plate, and the long bolt is equipped with between bottom plate, support piece, stand and lug, and the long bolt is used for ensuring the stability of the connection between base and stand. Through the mutual cooperation of the lug at the top of base, the recess in the inside of bottom plate, the recess at the bottom of stand and the outer wall trapezoidal support piece, realize the accurate joint of stand between bottom plate and base, avoid the blind adjustment of traditional no guide structure, significantly promote bolt hole coaxial degree and installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plate beam support technology, and more specifically, to a large plate beam support fixture. Background Technology

[0002] In the manufacturing, installation, and subsequent maintenance of steel structures for thermal power boilers, large plate beam support fixtures are needed when welding large plate beams is required to ensure weld quality, flipping them to facilitate construction on different surfaces, ensuring their stability and preventing damage during transportation, and ensuring the precise assembly of components when manufacturing large plate beams with special structures such as stacked beams.

[0003] Existing beam support fixtures typically lack a positioning and guiding mechanism during the connection process between the column and the base. This makes it easy for the column to shift or tilt during lowering, resulting in difficulty in ensuring the coaxiality of the bolt holes. This requires repeated adjustments to the column position to complete the bolt insertion, a cumbersome and inefficient process. Under complex working conditions, hole deviations not only prolong installation time, but if the bolt hole alignment is inaccurate, it may also cause thread wear or component deformation due to forced bolt insertion, directly affecting the stability and reliability of the connection node, and thus posing a potential threat to the construction quality and safety of the large plate beam.

[0004] Therefore, we propose a large plate beam support fixture. Summary of the Invention

[0005] This utility model provides a large plate beam support fixture, which features a protrusion on the top of the base, a groove inside the base plate, and trapezoidal, evenly distributed support blocks fixed to the bottom of the column's outer wall. When the column is lowered, the trapezoidal support blocks on all four sides form a geometrically guiding fit with the inclined surface of the groove in the base plate, and the protrusion and the groove at the bottom of the column form a convex-concave engagement, achieving precise positioning and engagement between the column and the base. Simultaneously, long bolts passing through interconnected holes in the base plate, support blocks, column, and protrusion ensure connection stability. This allows the fixture to achieve coaxial bolt holes without repeated adjustments to the column position during connection, improving installation efficiency and connection accuracy, thereby solving the problems mentioned in the background art.

[0006] The existing large plate beam support fixtures lack a positioning and guiding mechanism when connecting the column and the base, which easily leads to problems such as poor coaxiality of bolt holes, low installation efficiency, and affects the stability and reliability of the connection.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A large plate beam support fixture includes a base, a bottom plate is fixedly connected to the top of the base, the bottom plate has a groove inside, and a plurality of protrusions are provided on the top of the base inside the bottom plate. A column is movably engaged between the groove inside the bottom plate and the outer wall of the protrusions.

[0009] A support block is fixedly connected to the outer wall of the column near the bottom. The support block is movably engaged inside the groove of the base plate. Long bolts are provided between the base plate, the support block, the column and the protrusion. The long bolts are used to ensure the stability of the connection between the base and the column.

[0010] In the above technical solution, the support block is trapezoidal in shape, and the support block is evenly distributed on the four outer walls of the column near the bottom. The support block is movably engaged in the groove of the base plate.

[0011] Preferably, the protrusions are evenly distributed inside the grooves of the base plate, and the bottom of the column is provided with grooves near the four outer walls, with multiple protrusions respectively engaging inside the grooves at the bottom of the column.

[0012] Preferably, bolt holes are provided on the four outer walls of the side of the base plate near the center, and holes communicating with the bolt holes are provided inside the support block and the protrusion. Long bolts are connected between the bolt holes of the base plate, the support block and the protrusion.

[0013] Based on this, the base plate and the base are provided with ear plates near one of their outer walls. The ear plates on the base plate and the base are aligned vertically, and the center of the ear plate pin hole is located on the same vertical line.

[0014] Preferably, a top plate is fixedly connected to the top of the column, and adjusting bolts are provided inside the top plate and the column.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In a large plate beam support fixture, the geometrical guiding cooperation between the protrusion on the top of the base, the groove inside the base plate, and the trapezoidal support blocks evenly distributed on the bottom of the outer wall of the column allows the trapezoidal support blocks to automatically slide into the inclined surface of the groove in the base plate when the column is lowered. The protrusion and the groove at the bottom of the column form a convex-concave engagement, constructing a self-guiding positioning system. This enables the column and base to be quickly and accurately aligned, avoiding the blind adjustment of traditional non-guiding structures and significantly improving the coaxiality of bolt holes and installation efficiency.

[0017] 2. In a large plate beam support fixture, a multi-point rigid constraint structure is formed by the convex-concave interlocking of the protrusion and the groove at the bottom of the column, and the symmetrical interlocking of the trapezoidal support block and the groove of the base plate. Combined with the through-type connection of long bolts penetrating the base plate, support block, and protrusion, the load of the column is evenly transferred to the base, effectively resisting offset, tilting, and external impact, reducing the risk of component deformation, and enhancing the stability and reliability of the connection nodes. Furthermore, through the standardized design of the positioning structure and the pre-aligned layout of the bolt holes, the hidden danger of thread wear caused by hole position deviation is eliminated, ensuring the accuracy retention and component durability during repeated disassembly and assembly of the fixture, and extending the overall service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the overall structure of this utility model;

[0020] Figure 3 This is a perspective view of the support tooling connection structure of this utility model;

[0021] Figure 4 This is an internal side view of the connection structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the connection of this utility model;

[0023] Figure 6 This is a schematic diagram of the bump distribution structure of this utility model.

[0024] The components represented by each number in the attached diagram are listed below: 1. Base; 11. Protrusion; 12. Base plate; 13. Ear plate; 14. Long bolt; 2. Column; 21. Top plate; 22. Adjusting bolt; 23. Support block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0026] Currently, existing large-plate beam support fixtures lack a positioning and guiding mechanism when connecting column 2 and base 1, which easily leads to poor coaxiality of bolt holes, low installation efficiency, and affects connection stability and reliability. Please refer to [link / reference needed]. Figures 1-3 As shown, a large plate beam support fixture includes a base 1, a base plate 12 fixedly connected to the top of the base 1, a groove inside the base plate 12, and multiple protrusions 11 located inside the base plate 12 at the top of the base 1. A column 2 is movably engaged between the groove inside the base plate 12 and the outer wall of the protrusions 11. A support block 23 is fixedly connected to the outer wall of the column 2 near the bottom, and the support block 23 is movably engaged inside the groove of the base plate 12. Long bolts 14 are provided between the base plate 12, the support block 23, the column 2 and the protrusions 11 to ensure the stability of the connection between the base 1 and the column 2.

[0027] When implementing, refer to Figure 5 As shown, the support block 23 is trapezoidal in shape and is evenly distributed on the four outer walls of the column 2 near the bottom. The support block 23 is movably engaged in the groove of the base plate 12.

[0028] When the column 2 is lowered, the trapezoidal support blocks 23 on all four sides form a geometric guide fit with the corresponding inclined surfaces of the grooves in the base plate 12. The inclined sides of the trapezoids are at the same angle as the inner wall of the groove, and the support blocks 23 can slide in automatically along the inclined surfaces of the groove. When the column 2 is slightly offset, the inclined sides of the trapezoidal support blocks 23 contact the inner wall of the groove, and the inclined surface push force forces the column 2 back to the center position, realizing blind insertion and rapid positioning.

[0029] The trapezoidal support blocks 23, evenly distributed on four sides, form a four-point symmetrical engagement with the groove of the base plate 12. The upper surface of the support block 23 is in contact with the top surface of the groove, restricting the vertical movement of the column 2. The two sides of the support block 23 are in contact with the side wall of the groove, restricting the horizontal displacement in the X or Y axis direction. The verticality of the column 2 is maintained by the geometric constraints of the structure itself, so that the column 2 is always in a stable state during the installation process.

[0030] See Figure 5 and Figure 6 As shown, the protrusions 11 are evenly distributed inside the groove of the base plate 12, and the bottom of the column 2 is provided with grooves near the four outer walls. Multiple protrusions 11 are respectively engaged in the grooves at the bottom of the column 2.

[0031] The protrusion 11 located in the groove of the base plate 12 at the top of the base 1 forms a convex-concave fit with the grooves on the four sides of the bottom of the column 2. When the column 2 is lowered, the protrusion 11 slides along the vertical direction of the groove of the column 2, and the side fits against the inner wall of the groove, forming a bidirectional positioning constraint of X or Y axis.

[0032] At this time, the four sets of protrusions 11 are evenly distributed in the groove of the base plate 12, forming an eight-point support system with the trapezoidal support blocks 23 on the four sides (four protrusions 11 + four support blocks 23). When the column 2 bears the load of the large plate beam, the protrusions 11 transmit the vertical load evenly to the base plate 12 and the base 1 through the snap-fit ​​surface. At the same time, the lateral constraint of the protrusions 11 on the groove at the bottom of the column 2 can resist the thermal deformation thrust during welding.

[0033] See Figure 4 and Figure 5 As shown, bolt holes are provided on the four outer walls of the side of the base plate 12 near the center. The support block 23 and the protrusion 11 are provided with holes that communicate with the bolt holes. Long bolts 14 are connected between the bolt holes of the base plate 12, the support block 23 and the protrusion 11.

[0034] When the column 2 is lowered, the four trapezoidal support blocks 23 engage with the inclined surfaces of the grooves in the base plate 12 (guiding and positioning), and the protrusions 11 engage with the grooves at the bottom of the column 2 (bidirectional constraint), which pre-fixes the column 2 precisely at the center of the base plate 12. At this time, the bolt holes on the side of the base plate 12, the internal holes of the support blocks 23, and the internal holes of the protrusions 11 are naturally coaxial due to the structural positioning effect, which solves the core pain point of "difficulty in aligning bolt holes" in the existing technology.

[0035] Bolt holes are evenly distributed on the four centers of the base plate 12 (usually four groups, corresponding to the four facades of the column 2). Each group of holes corresponds one-to-one with the holes of the support block 23 and the protrusion 11 on that side. For example, one bolt hole is opened on each side of the base plate 12, and the support block 23 and the protrusion 11 are opened with through holes of the same specification at the same height position, forming a through channel of "base plate 12-support block 23-protrusion 11", providing an unobstructed path for the long bolt 14 to pass through.

[0036] Once the column 2 is positioned, insert the long bolt 14 (the length of which needs to penetrate the base plate 12, support block 23, and protrusion 11) through the bolt hole on the side of the base plate 12. The bolt rod can automatically pass through the three layers of holes by gravity or slight thrust, thus completing the insertion of a single bolt. After insertion, install a nut on the other end of the bolt and use a wrench to pre-tighten it appropriately to temporarily fix the column 2.

[0037] See Figure 1 As shown, both the base plate 12 and the base 1 are provided with ear plates 13 near one of their outer walls. The ear plates 13 on the base plate 12 and the base 1 are aligned vertically, and the pin holes of the ear plates 13 are located on the same vertical line. When hoisting the fixture, the wire rope or pin of the hoisting equipment can pass through the pin holes of the upper and lower ear plates 13 at the same time to form a rigid hoisting fulcrum with two points in a straight line, ensuring that the hoisting force line coincides with the center of gravity of the fixture, and avoiding the tilting moment caused by traditional single ear plate 13 hoisting.

[0038] During the large plate girder flipping construction, the upper and lower ear plates 13 can be connected to the main crane and the auxiliary crane respectively: the bottom plate 12 ear plates 13 are connected to the main crane to bear the main weight, and the base 1 ear plates 13 are connected to the auxiliary crane to control the flipping angle. Through the coaxial rotation fulcrum of the upper and lower ear plates 13, a smooth transition is achieved when the large plate girder flips 90°. During transportation, the bottom plate 12 and the base 1 ear plates 13 can be directly bolted to the fixed bracket of the transport vehicle. The alignment design of the upper and lower ear plates 13 eliminates the need for additional calibration of the bolting holes, significantly improving the loading and unloading efficiency during transportation.

[0039] See Figure 1 As shown, a top plate 21 is fixedly connected to the top of column 2, and adjusting bolts 22 are provided inside the top plate 21 and column 2. The top plate 21 (PL30×120×120 steel plate) is fixed to the top of column 2 to form a horizontal bearing platform, with an M33 nut embedded in its center. The lower end of the adjusting bolt 22 (M33×120, grade 8.8) is screwed into the nut, and the top end is exposed and directly contacts the lower flange of the large plate beam, forming a vertical load transfer path of "bolt-nut-top plate 21-column 2". Based on the 30mm thickness of the top plate 21 and the high strength characteristics of Q355B (compressive strength 355MPa), the deformation is ensured to be ≤0.1mm under a 50t load, providing a stable support reference for the adjusting bolt 22.

[0040] Vertical displacement is achieved by adjusting bolt 22; when it rotates clockwise, the bolt moves upward under the constraint of the nut, pushing the large plate beam to rise; when it rotates counterclockwise, the bolt moves downward, and the large plate beam descends with gravity; after adjustment to the target height, an anti-loosening nut is installed above the top plate 21 to form a friction lock with the main nut, resisting the bolt's rotation caused by vibration; and an annular groove is opened at the top of the bolt to cooperate with the limit pin on the top plate 21 for fixation, eliminating the risk of accidental loosening.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large panel beam support tooling comprising a base (1) characterised in that: The base (1) is fixedly connected to a base plate (12) at the top. The base plate (12) has a groove inside. The top of the base (1) is provided with multiple protrusions (11) inside the base plate (12). A column (2) is movably engaged between the groove inside the base plate (12) and the outer wall of the protrusion (11). A support block (23) is fixedly connected to the outer wall of the column (2) near the bottom. The support block (23) is movably engaged in the groove of the base plate (12). A long bolt (14) is provided between the base plate (12), the support block (23), the column (2) and the protrusion (11). The long bolt (14) is used to ensure the stability of the connection between the base (1) and the column (2).

2. The large panel beam support tooling of claim 1, wherein: The support block (23) is trapezoidal in shape and is evenly distributed on the four outer walls of the column (2) near the bottom. The support block (23) is movably engaged in the groove of the base plate (12).

3. The large panel beam support tooling of claim 2, wherein: The protrusions (11) are evenly distributed inside the groove of the base plate (12). The bottom of the column (2) is provided with grooves near the four outer walls. The protrusions (11) are respectively engaged in the grooves at the bottom of the column (2).

4. The large panel beam support tooling of claim 3, wherein: Bolt holes are provided on the four outer walls of the side of the base plate (12) near the center. The support block (23) and the protrusion (11) are provided with holes that communicate with the bolt holes. Long bolts (14) are connected between the bolt holes of the base plate (12), the support block (23) and the protrusion (11).

5. The large panel beam support tooling of claim 1, wherein: Both the base plate (12) and the base (1) are provided with ear plates (13) near one of their outer walls. The ear plates (13) on the base plate (12) and the base (1) are aligned vertically, and the pin holes of the ear plates (13) are located on the same vertical line.

6. The large panel beam support tooling of claim 1, wherein: The top of the column (2) is fixedly connected to a top plate (21), and the top plate (21) and the inside of the column (2) are provided with adjusting bolts (22).

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