CN107187698B - A kind of combined box of bending-twisting - Google Patents

Abstract

A combined box body resistant to bending and torsion, which is composed of at least two box member units assembled in the longitudinal direction. The side beams are butt-welded, the central beam and the side beams are welded with diagonal braces, and the length direction of the center beam, side beams and diagonal braces are uniformly welded with side partitions put in from both sides and from top to bottom. The vertical partitions put in, the two ends of the central beam, the side beams, and the diagonal brace beams are respectively welded with the front end plate and the rear end plate, and the left and right sides of the side beams, side partitions, front end plates, and rear end plates are respectively welded with the left side plate. The upper and lower sides of the plate and the right side plate, the side beam, the vertical partition, the front end plate, the rear end plate, the left side plate and the right side plate are respectively welded with a top plate and a bottom plate. The invention solves the problem of insufficient bending rigidity and torsional rigidity of the existing box structure. The bending and torsion combined box has strong bending and torsion resistance, simple and symmetrical structure, and can be used in combination to achieve the required length. , the actual use flexibility is strong.

Description

A combined box body resistant to bending and torsion

technical field

The invention relates to the field of box structures bearing large bending and torsion loads, in particular to a combined box that is resistant to bending and torsion.

Background technique

In the modern industrial field, there are many occasions where the structure has to withstand large bending moments and large torques. Due to the reasons of precision and reliability, when the structure bears large bending moment and high torque load, the deformation should be controlled within a certain range. This requires a greater rigidity of the structure. Among these structures, the box structure is a common one.

The existing box structure that bears large bending moment and high torque is insufficient in rigidity, which will cause a large amount of deformation of the structure, thus failing to meet the work requirements. For example, the beam of a machine tool must bear large bending moments and large torques during work. Insufficient rigidity of the beam will seriously reduce the machining accuracy of the workpiece; Jamming occurs during the movement; the road compaction device of the road construction machinery has to withstand large bending moments and large torques during the rolling process. Insufficient rigidity will lead to uneven thickness of the road surface and insufficient road compaction. To sum up, it is necessary to design a new box structure with high bending stiffness and high torsional stiffness to improve the deficiencies of the existing box structure in bending stiffness and torsional stiffness. The invention can be used in the fields of machine tool, driving, rolling equipment and the like.

Contents of the invention

In order to solve the above-mentioned existing problems, the present invention provides a combined box body resistant to bending and torsion to solve the problem of insufficient bending stiffness and torsional stiffness of the existing box structure. Strong torsion resistance, simple and symmetrical structure, and can be used in combination to achieve the required length, and has strong flexibility in actual use. The body component unit is assembled along the longitudinal direction, and the feature is that: the box component unit includes a central beam with an H-shaped cross section and a side beam formed by welding two pieces of sheet metal after bending at least twice. Diagonal beams are welded between the central beam and side beams, and the center beam, side beams and diagonal beams are uniformly welded with side partitions placed from both sides and vertical partitions placed from top to bottom. The two ends of the center beam, the side beam, and the brace beam are respectively welded with the front end plate and the rear end plate, and the left and right sides of the side beam, the side partition plate, the front end plate, and the rear end plate are respectively welded with the left side plate and the right side plate, the upper and lower sides of the side beam, the vertical partition, the front end plate, the rear end plate, the left side plate, and the right side plate are respectively welded with a top plate and a bottom plate.

As a further improvement of the present invention, the front end plate and the rear end plate are provided with lightening holes, and the shape of the lightening holes is trapezoidal, fan-shaped, circular or square.

As a further improvement of the present invention, the front end plate and the rear end plate are provided with installation holes for assembly and connection of different box-type composite beam component units, and the shape of the holes is circular, U-shaped or waist-shaped.

As a further improvement of the present invention, the side partitions and the vertical partitions are provided with via holes or weight-reducing holes, and the holes are round or waist-shaped.

As a further improvement of the present invention, the left side plate, the right side plate, the top plate, and the bottom plate are provided with holes for welding, and the shape of the holes is uniformly distributed discontinuous waist-shaped holes.

Compared with the prior art, a combined box body resistant to bending and torsion of the present invention has the following beneficial effects:

1. The present invention adopts an assembled structure, which is convenient for assembly, packaging and transportation;

2. The present invention adopts a frame structure, which effectively improves the bending and torsional rigidity of the cabinet. It can effectively reduce the static deformation of the structure in the working state.

3. The present invention adopts side beams bent at least twice and a center beam with an H-shaped cross section, so that the vertical rigidity and torsional rigidity of the box body are enhanced, thereby improving the working quality of the equipment.

Description of drawings

Fig. 1 is the structural isometric view of the embodiment of the combined box member unit of the present invention;

Fig. 2 is an isometric view of the structure of the embodiment of the combined box member unit of the present invention after the front end plate, the right side plate and the top plate are hidden;

Fig. 3 is a structural cross-sectional view of an embodiment of a combined box member unit of the present invention;

In the figure, 1. Center beam; 2. Side beam; 3. Diagonal beam; 4. Side partition; 5. Vertical partition; 6. Front panel; 7. Rear panel; 8. Left panel; 9. Right side plate; 10, top plate; 11, bottom plate.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

The invention provides a combined box body with anti-bending and torsion to solve the problem of insufficient bending rigidity and torsional rigidity of the existing box structure. , symmetrical, and can be used in combination to achieve the desired length, and the actual use is flexible.

Referring to Figures 1 and 2, the combined box member unit of the present invention includes a central beam 1, side beams 2, diagonal brace beams 3, side partitions 4, vertical partitions 5, front end plates 6, rear end plates 7, left Side plate 8, right side plate 9, top plate 10, bottom plate 11.

Referring to Figures 2 and 3, the cross-section of the center beam 1 is H-shaped, the two parallel sides of the H-shape are placed horizontally, and the middle connecting plate is placed vertically; Tailored and welded; the diagonal brace beam 3 is welded between the center beam 1 and the side beam 2; the side partition 4, the vertical partition 5, and the side partition are welded in the length direction of the center beam 1, side beam 2, and diagonal brace 4 put into welding from both sides, and vertical dividing plate 5 puts into welding from top to bottom.

Referring to Fig. 1, the front end plate 6 and the rear end plate 7 are respectively welded on the two ends of the welded components; Waist-shaped holes, through these waist-shaped holes, the left side plate 8, the right side plate 9, the top plate 10, and the bottom plate 11 are welded around the components that have been welded.

Referring to Figure 1, there are two rows of through holes on the front and rear end plates, and the box component units of different lengths can be assembled into a whole through M18 bolts to meet different length requirements.

Referring to Fig. 1, there are trapezoidal lightening holes on the front and rear end plates.

Referring to Fig. 2, there are circular lightening holes on the side partition board 4 and the vertical partition board 5.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any other form, and any modification or equivalent change made according to the technical essence of the present invention still belongs to the scope of protection required by the present invention .

Claims (5)

1. a kind of combined box of bending-twisting, assembled along longitudinal direction by least two box component unit, it is characterised in that： The box component unit includes the center sill that section is H-shaped（1）With by two pieces of metal plates respectively after at least 2 bendings to welding Side bar made of connecing（2）, the center sill（1）And side bar（2）Between be welded with raker beam（3）, the center sill（1）, side bar（2） And raker beam（3）Length direction be uniformly welded with the side partition board being put into from both sides（4）With from the vertical clapboard being put into up and down（5）, The center sill（1）, side bar（2）, raker beam（3）Both ends be respectively welded front end-plate（6）And end plate（7）, the side bar （2）, side partition board（4）, front end-plate（6）, end plate（7）The left and right sides be respectively welded left plate（8）And right plate（9）, institute State side bar（2）, vertical clapboard（5）, front end-plate（6）, end plate（7）, left plate（8）, right plate（9）Both sides up and down be respectively welded There is top plate（10）And bottom plate（11）.

2. the combined box of bending-twisting according to claim 1, it is characterised in that：The front end-plate（6）And end plate （7）On be provided with lightening hole, loss of weight hole shape is trapezoidal, fan-shaped, round or rectangular.

3. the combined box of bending-twisting according to claim 1, it is characterised in that：The front end-plate（6）And end plate （7）On be provided with the mounting hole that assembled connections are carried out for different box combination beam member units, the shape in hole be round, U-shaped or Kidney-shaped.

4. the combined box of bending-twisting according to claim 1, it is characterised in that：The side partition board（4）And vertical clapboard （5）On be provided with via or lightening hole, hole shape is round or kidney-shaped.

5. the combined box of bending-twisting according to claim 1, it is characterised in that：The left plate（8）And right plate （9）, top plate（10）, bottom plate（11）On be provided with hole for welding, the shape in hole is uniformly distributed discontinuous kidney slot.