Support beam

Abstract

A support beam that has a single cross-section including two vertical walls which are spaced by a certain distance; a top wall transversely connected with top edges of the vertical walls; a recessed space inward recessed from the top wall, two vertical sidewalls of the recessed space being respectively spaced from the two vertical walls by a certain distance; two bottom walls respectively horizontally disposed at bottom ends of the vertical walls; and multiple through holes being axially along the beam formed on the bottom wall of the recessed space. Accordingly, the beam has a better structural strength.

Description

This application is a Continuation-in-Part of application Ser. No. 10/833,079, entitled MOLDBOARD SUPPORT BEAM, filed on Apr. 28, 2004.

BACKGROUND OF THE INVENTION

The present invention is related to a beam used in construction, and more particularly to a support beam for supporting a moldboard. The support beam has better supporting strength and is more durable.

FIG. 1 shows a conventional support beam 10 for supporting a moldboard. The beam 10 which is C-shaped cross-section includes a plane 12 and two sidewalls connected with two long sides of the plane 12. Multiple holes 15 are formed on the plane 12.

In use, two support beams 10 are placed on the outer sides of two moldboards 16. A thread rod 17 is passing through the moldboards 16 and holes 15 of the beams 10. Two fixers 18 are respectively mounted on two ends of the thread rod 17. By means of that, the beams 10 support the moldboards. Then the moldboard is grouted to form a floor or wall.

Said beam has no good structural strength and is inconvenient to install. The structure of the beam 10 is too simple to bear positive pressure. When a larger force applies to the beam, the sidewalls 14 will be bent. The wideness of the plane 12 is wide so that the plane dents inward easily. Accordingly, the flat edges 141 formed on the inner edges of the sidewalls 14 bent inward (as shown by phantom line) when the beam 10 is deformed. It is a linear contact between a sidewall 14 and the moldboard 16, and the moldboard is ruined easily due to the stress. To avoid deformation, multiple beams are placed in higher density, thus more beams have been used and the working time is increased, it enhances the cost.

Besides, although many holes 15 are formed on the beam for thread rods 17 passing through, in consideration of the structural strength, only small holes are formed. The un-penetrating area on the plane 12 is larger than the penetrating area. Accordingly, it is not easy for an operator to align a thread rod with a hole. Therefore, it is not convenient to install the beam.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide a support beam with better strength.

It is a further object of the present invention to provide a support beam that is easy to install.

It is a further object of the present invention to provide the above support beams which can be axially connected to an elongated support beam as necessary.

The present invention can be best understood through the following description and accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of conventional support beams for supporting moldboards;

FIG. 2 is a perspective view of a first embodiment of the present invention;

FIG. 3 is a sectional view of the support beam and showing the beam in use;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is a perspective view of another embodiment of the present invention;

FIG. 6 is a perspective view of still another embodiment;

FIG. 7 shows that two support beams are axially connected; and

FIG. 8 is a sectional view according to FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIG. 2. According to a preferred embodiment, the support beam 30 of the present invention has a single cross-section including:

• • two vertical walls 40 which are parallel to each other and spaced by a certain distance;
  • a top wall 42 horizontally connected with top edges of the vertical walls 40;
  • a recessed space 50 axially extending along the beam and downward recessed from the top wall 42, the recessed space 50 being right positioned at the center of the beam; two vertical sidewalls 52 being formed on two sides of the recessed space 50, the sidewalls 52 being respectively spaced from the two vertical walls 40 by a certain distance W;
  • two bottom walls 54 horizontally inward extending from bottom ends of the vertical walls 40, each bottom wall 54 has a free edge from which an erect wall 56 upward extends by a certain height. The width of the bottom wall 54 is equal to the remaining width w of each side of the top wall 42, therefore, the erect walls 56 are vertically aligned with the sidewalls 52 of the recessed space 50 as shown in FIG. 3; and
  • multiple through holes 58, each hole is a long hole, the length of the hole is longer than the width of it, the through holes 58 being axially along the beam formed on the bottom wall of the recessed space 50 by intervals, the longitudinal of the holes being parallel to the axial of the beam.

The support beam in this embodiment further includes a predetermined number of reinforcing portions 57 formed on the vertical walls 40, the portions 57 can be dents or projections.

The present invention is used to support two side by side arranged moldboards. Please refer to FIG. 3. The bottom wall 54 of the support beam 30 is rested on a moldboard. The beam is prefixed on the moldboard with nails through nail holes 59 formed on the bottom wall of the recessed space 50. Then a thread rod 60 is extended through the moldboard and a through hole 58 of the beam. Then a fixer 62 is fitted on outer end of the thread rod 60 and fixed with a nut 64. The fixer serves to pressurize the top wall 42 of the beam and the beam support the moldboard.

FIGS. 5 and 6 show a second and a third embodiments of the present invention, in which the vertical walls 80 of the beam 70, 70′ are formed with different configurations of reinforcing portions 88, 88′.

Referring to FIGS. 7 and 8, two support beams 30 can be axially connected by an axially connecting member 90. The connecting member 90 has a rectangular tube 92. An upright board 94 is fixed on each side of each end of the rectangular tube.

In use, two ends of the connecting member 90 are respectively fitted into the two beams 30. The top end and bottom end of each upright board 94 respectively abut against the top wall 42 and bottom wall 54. Accordingly, the connecting member 90 is stably located in the beam bodies in very good strength. Then a bolt 95 is passed through the hole 32 of the beam 30 and the hole 96 of the connecting member 90 to fix the same together.

The support beam can achieve the following effects:

1. Please refer to FIG. 3. The beam has substantially H-shaped cross-section and is able to bear considerably great positive pressure without deforming. Each side of the beam has a vertical wall 40 and a sidewall 52, and strength and rigidness are raised hence. The beam is able to bear higher positive pressure and torque F as shown in FIG. 4.

2. The support beam has a better strength. When supporting moldboards, the beam can be arranged in lower density. Therefore, the operating time is shortened and the number of the beam is reduced. The cost is lowered.

3. The support beam has a high strength so that it can be formed with the long holes 58. The area of the hollow portion of top face of the beam is larger than the area of the non-hollow portion. Accordingly, the thread rod can be easier to extend through the beam.

4. The erect walls help to the strength of the beam, and the bottom walls of the beam would not be bent easily. It maintains a planar contact between a bottom wall and a moldboard. Accordingly, the moldboard bears less stress and would not be ruined.

5. The support beam of the present invention can be axially connected to support a large-area moldboard.

Claims

1. A support beam which has a single cross-section including:

two vertical walls which are parallel to each other and spaced by a certain distance;

a top wall transversely connected with top edges of the vertical walls;

a recessed space inward recessed from the top wall, two vertical sidewalls being formed on two sides of the recessed space, the sidewalls being respectively spaced from the two vertical walls by a certain distance;

two bottom walls respectively horizontally disposed at bottom ends of the vertical walls; and

a predetermined number of through holes being axially along the beam formed on the bottom wall of the recessed space.

2. The support beam as claimed in claim 1, wherein the bottom walls inward extend from the bottom ends of the vertical walls; further including two erect walls respectively upward extending from free edges of the bottom walls.

3. The support beam as claimed in claim 2, wherein the erect walls are respectively vertically aligned with the sidewalls of the recessed space.

4. The support beam as claimed in claim 1, further comprising a predetermined number of reinforcing portions disposed on the vertical walls.

5. The support beam as claimed in claim 4, wherein each the reinforcing portion is a dent.

6. The support beam as claimed in claim 4, wherein each the reinforcing portion is a projection.

7. The support beam as claimed in claim 1, wherein each the through hole is a long hole, the longitudinal of the holes being along with the longitudinal of the beam.

8. The support beam as claimed in claim 1, wherein the bottom walls inward extend from the bottom ends of the vertical walls; further comprising a connecting member having a rectangular tube, at least an upright board being fixed on each side of the rectangular tube, one end of the connecting member being fitted in the beam with the top end and bottom end of each upright board respectively abutting against the top wall and bottom wall of the beam.

9. The support beam as claimed in claim 8, wherein each end of the beam is formed with a transverse hole passing through the vertical walls; a transverse hole being formed on each end of the connecting member; a screwing member being screwed through the holes of the beam and the connecting member.