CONSTRUCTION BEAM
A construction beam includes an elongated main body having two vertical walls, a top wall connected between top edges of the two vertical walls, two bottom walls respectively inward extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height. Multiple spacer assemblies are disposed between the two vertical walls of the main body to keep the vertical walls spaced from each other by a fixed distance. When mounting wooden bars on the beams, the wooden bars are secured to the main bodies by means of multiple fastening members for laying a moldboard on the wooden bars. Two beams can be axially connected with each other by means of a connection member to elongate the length of the beam.
1. Field of the Invention
The present invention relates generally to a construction implement, and more particularly to a construction beam.
2. Description of the Related Art
In construction operation, concrete is grouted to form solid structure of a construction. When grouting in various construction sites, beams are popularly used to support wooden bars for supporting the moldboard as a common construction means. The beams are able to bear the weight or pressure of the concrete.
Most of the conventional beams are wooden beams and metal beams. The wooden beam has a poor structural strength and cannot be recovered. In case of damage, the wooden beam can be only directly discarded without possibility of reuse. This is not a good option in modern times that emphasizes environmental protection.
The conventional metal beam has a quite simple cross-sectional structure. Therefore, the metal beam can only bear limited pressure. In case of greater application force, the beam is often deformed or laterally bent. Therefore, the conventional metal beam can hardly bear greater action force.
Moreover, the grouting moldboard is supported by the wooden bars, which are supported by the beams. However, neither the wooden beams nor the metal beams are designed with structure for fixing the wooden bars. In case of stronger grouting intensity, the wooden bars often displace from their home positions due to shock or even drop down from the beams. Under such circumstance, the moldboard will break apart and the concrete will fall to cause danger. Beside, the conventional beam has a fixed length and lacks any suitable design for connecting the beams into a longer length. In the case that the grouting area exceeds the length of the beam, many workers often randomly set the beams. As a result, the beams will intersect each other to asymmetrically support the moldboard. This will cause uneven supporting force for the respective parts of the moldboard. Therefore, it has become a critical issue how to provide a design for fixing the wooden bars and connecting the beams with each other.
SUMMARY OF THE INVENTIONIt is therefore a primary object of the present invention to provide a construction beam, which has higher force bearing strength and is more solid and durable.
It is a further object of the present invention to provide a construction beam. When mounting wooden bars on the beams, the wooden bars can be secured to the main bodies by means of multiple fastening members for laying a moldboard on the wooden bars.
It is still a further object of the present invention to provide a construction beam. Two beams can be axially connected with each other by means of a connection member to form a support beam with longer length in accordance with the grouting area.
The construction beam of the present invention includes:
a main body, which is an elongated body having uniform cross-sectional shape, the main body including two vertical walls, a top wall transversely connected between top edges of the two vertical walls, two bottom walls inward horizontally extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height; and
multiple spacer assemblies disposed between the two vertical walls of the main body, two ends of each spacer assembly abutting against the two vertical walls to keep the two vertical walls spaced from each other by a fixed distance.
In the above beam, the multiple spacer assemblies are disposed between the two vertical walls of the main body to restrict the two vertical walls and keep the two vertical walls spaced from each other by a fixed distance. Accordingly, when a force is applied to the vertical walls, the vertical walls are prevented from contracting or deforming.
Multiple perforations formed through the two vertical walls of the main body the above beam; a connection bolt member is passed through the perforations of the two vertical walls to connect the main body with a fastening member for fixing wooden bars. Accordingly, the wooden bars are prevented from swinging to provide a support for the moldboard and facilitate construction work.
One end of the beam is connectable with one end of a connection member by means of at least one threaded assembly. The other end of the connection member is connected with another beam to axially connect the beams to form a support beam with a necessary length in accordance with the grouting area in construction work for supporting the moldboard. Multiple support beams can be regularly arranged to uniformly support every part of the moldboard.
The present invention can be best understood through the following description and accompanying drawings, wherein:
Please refer to
The vertical wall 21, the bottom wall 23 and the upright wall 24 on the same side of the main body 20 define therebetween a receiving space 26.
Multiple spacer assemblies 30 are disposed in the main body 20 at equal intervals. In this embodiment, there are four spacer assemblies 30. Each spacer assembly 30 is composed of a spacer member 31 and a restriction assembly. The spacer member 31 is a tubular body having a passage 32. The spacer member 31 is disposed in the main body 20 with two ends in abutment against inner faces of the two vertical walls 21 as shown in
It should be noted that each restriction assembly can be alternatively a rivet 38 as shown in
Please now refer to
In case of larger grouting area and insufficient length of the beams 10, the present invention provides a connection member 50 as shown in
Please refer to
The connection member 50 is a metal member including a main body 51, which is a hollow elongated body with uniform cross-sectional shape such as rectangular shape. Four apertures 53 are transversely formed through two lateral walls 52 of the main body 51 near two ends of the main body 51 respectively. The apertures 53 are arranged in a longitudinal direction of the main body 51.
Two connection components 55 are fixedly connected with the main body 51. Each connection component 55 has a substantially U-shaped cross section. The connection component 55 includes two vertical leg sections 56 side by side arranged at a certain interval in parallel to each other and a top board 57 transversely connected between top edges of the two leg sections 56. The top board 57 of the connection component 55 is fixedly connected with the bottom wall 54 of the main body 51. The two leg sections 56 are formed under the bottom of the main body 51.
Four threaded assemblies 60 are also provided. Each threaded assembly 60 includes a bolt 62 and a nut 64.
Please refer to
The connection member 50 can be used to axially securely connect at least two beams 10. Preferably, the two leg sections 56 abut against the bottom walls 23 of the main body 20 as shown in
After two or more beams 10 are axially connected, more wooden bars 70 can be fixed on the beams 10 by means of multiple fastening members 40 for supporting a longer moldboard.
The construction beam of the present invention is advantageous over other construction beams on the current market. The beam of the present invention is compared with the other four conventional beams A, B, C, D in bending moment and performance per unit price as follows:
Please also refer to
Beam A (EFCO E-beam) has a trapezoidal cross section. The yield strength (Fy) of beam A is 3600 kgf/cm2 and the section modulus (Z) of beam A is 28.6 cm3. Accordingly, the bending moment (M) of beam A can be calculated to be 3600×28.6=102960 kgf-cm. The weight of beam A is 5.5 kg/m. The price per kilogram is 106.7 dollars/kg. Therefore, the performance of beam A per unit price is 102960/(5.5 kg/m*106.7 dollars/kg)=175.40 kgf-cm/dollar.
Beam B (lightweight channeled steel, two pieces) is an I-beam. The yield strength (Fy) of beam B is 2500 kgf/cm2 and the section modulus (Z) of beam B is 33.6 cm3. Accordingly, the bending moment (M) of beam B can be calculated to be 2500×33.6=84000 kgf-cm. The weight of beam B is 8.2 kg/m. The price per kilogram is 28 dollars/kg. Therefore, the performance of beam B per unit price is 84000/(8.2 kg/m*28 dollars/kg)=365.85 kgf-cm/dollar.
Beam C (H20 wooden beam) is a wooden beam. Through test, the bending moment of beam C is found to be 50968 kgf-cm. The weight of beam C is 4.7 kg/m. The price per kilogram is 83 dollars/kg. Therefore, the performance of beam C per unit price is 50968/(4.7 kg/m*83 dollars/kg)=130.65 kgf-cm/dollar.
Beam D (lightweight channeled steel, one piece) is a C-beam. The yield strength (Fy) of beam D is 2500 kgf/cm2 and the section modulus (Z) of beam D is 16.8 cm3. Accordingly, the bending moment (M) of beam D can be calculated to be 2500×16.8=42000 kgf-cm. The weight of beam D is 4.1 kg/m. The price per kilogram is 28 dollars/kg. Therefore, the performance of beam D per unit price is 42000/(4.1 kg/m*28 dollars/kg)=365.85 kgf-cm/dollar.
Accordingly, it can be found through the comparison between the bending moment (M) of various beams that the beam (top beam) of the present invention>beam A (EFCO E-beam)>beam B (lightweight channeled steel, two pieces)>beam C (H20 wooden beam)>beam D (lightweight channeled steel, one piece). The bending moment of the beam of the present invention is the best one. In other words, the beam of the present invention has a greatest force bearing strength for bearing highest action force. Please further refer to the comparison diagram between the performances of the beams per unit price. In sequence, the beam (top beam) of the present invention>beam B (lightweight channeled steel, two pieces)=beam D (lightweight channeled steel, one piece)>beam A (EFCO E-beam)>beam C (H20 wooden beam). The beam of the present invention still has a highest performance. This means the beam of the present invention can provide better supporting force at the same cost. Moreover, the price per kilogram of the beam of the present invention is even less than one half of the price of beam A with the second best bending moment. This means the same money can only buy one beam A, while two beams of the present invention. The assembly of two side by side arranged beams of the present invention can achieve a bending moment much higher than the bending moment of beam A. However, the price is still less than the price of one beam A. Therefore, the beam of the present invention not only has a solid structure, but also is quite advantageous over the conventional beams in cost-performance ratio.
Furthermore, according to statistics, the average bearable carriage weight of a human at one time is not over 25 kg. In the present invention, even if three beams are assembled into a longer beam, the weight of the assembly including the weight of the connection members is not over 23 kg. This value is lower than the average bearable carriage weight of a human. Therefore, even a thinner and shorter person can carry the beams. Therefore, the beam of the present invention has the advantages of better structural strength, higher cost-performance ratio and lightweight. Also, the beam of the present invention is easy to carry without causing heavy burden to construction workers.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Claims
1. A construction beam, which is an elongated body, comprising:
- a main body, which is an elongated body having uniform cross-sectional shape, the main body including two vertical walls side by side arranged at a certain interval in parallel to each other; a top wall transversely connected between top edges of the two vertical walls; two bottom walls inward horizontally extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height;
- multiple through holes formed through the two vertical walls of the main body; and
- multiple spacer assemblies passing through the through holes of the two vertical walls of the main body, each of two ends of each spacer assembly being formed with an inner abutment section and an outer abutment section, the two inner abutment sections of the spacer assembly respectively abutting against inner faces of the two vertical walls, while the two outer abutment sections of the spacer assembly respectively abutting against outer faces of the two vertical walls.
2. The beam as claimed in claim 1, wherein each spacer assembly is an elongated spacer member, the two inner and two outer abutment sections being respectively formed at two ends of the spacer member.
3. The beam as claimed in claim 1, wherein each spacer assembly includes a spacer member and a restriction assembly, the spacer member being a tubular body having a passage; the restriction assembly having two ends and being passed through the through holes of the two vertical walls and the passage of the spacer member, two ends of the spacer member serving as the two inner abutment sections; two ends of the restriction assembly serving as the two outer abutment sections.
4. The beam as claimed in claim 3, wherein the restriction assembly is composed of a bolt and a nut, the bolt having a head section, the head section of the bolt and the nut serving as the two outer abutment sections.
5. The beam as claimed in claim 3, wherein the restriction assembly is a rivet, two ends of the rivet serving as the two outer abutment sections.
6. The beam as claimed in claim 1, wherein multiple perforations are formed through the two vertical walls of the main body, the perforations are arranged in a longitudinal direction of the main body at equal intervals and near the top edges of the vertical walls.
7. The beam as claimed in claim 1, wherein:
- multiple perforations are formed through the two vertical walls of the main body and arranged in a longitudinal direction of the main body; and further comprising:
- a fastening member having a board body, two upright walls and two protrusion walls, the board body having at least four lateral sides, the two upright walls being disposed on a pair of lateral sides of the board body and upward extending from the board body, the board body and the two upright walls defining a receiving space; the two protrusion walls being disposed on the other pair of lateral sides of the board body and downward extending from the board body, each protrusion wall having at least one securing holes; the fastening member being disposed on the top wall of the main body; at least one connection bolt member being passed through the securing holes of the two protrusion walls of the fastening member and the perforations of the two vertical walls of the main body to connect the fastening member with the main body.
8. The beam as claimed in claim 1, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.
9. The beam as claimed in claim 2, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.
10. The beam as claimed in claim 3, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.
11. The beam as claimed in claim 7, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.
12. The beam as claimed in claim 1, wherein:
- at least two connection holes are formed through the two vertical walls of the main body and near two ends of the main body respectively; and
- the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and at least one connection component having two vertical leg sections and a top board connected between the two leg sections; the connection component being fixedly disposed under a bottom face of the main body; at least two apertures being transversely formed through two lateral walls of the connection member and near two ends of the connection member respectively; one end of the connection member extending into the main body of the beam; at least one threaded assembly being passed through the apertures of one end of the connection member and the connection holes of one end of the main body of the beam to connect the connection member with the main body.
13. The beam as claimed in claim 2, wherein:
- at least two connection holes are formed through the two vertical walls of the main body and near two ends of the main body respectively; and
- the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and at least one connection component having two vertical leg sections and a top board connected between the two leg sections; the connection component being fixedly disposed under a bottom face of the main body; at least two apertures being transversely formed through two lateral walls of the connection member and near two ends of the connection member respectively; one end of the connection member extending into the main body of the beam; at least one threaded assembly being passed through the apertures of one end of the connection member and the connection holes of one end of the main body of the beam to connect the connection member with the main body.
14. The beam as claimed in claim 3, wherein:
- at least two connection holes are formed through the two vertical walls of the main body and near two ends of the main body respectively; and
- the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and at least one connection component having two vertical leg sections and a top board connected between the two leg sections; the connection component being fixedly disposed under a bottom face of the main body; at least two apertures being transversely formed through two lateral walls of the connection member and near two ends of the connection member respectively; one end of the connection member extending into the main body of the beam; at least one threaded assembly being passed through the apertures of one end of the connection member and the connection holes of one end of the main body of the beam to connect the connection member with the main body.
15. The beam as claimed in claim 7, wherein:
- at least two connection holes are formed through the two vertical walls of the main body and near two ends of the main body respectively; and
- the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and at least one connection component having two vertical leg sections and a top board connected between the two leg sections; the connection component being fixedly disposed under a bottom face of the main body; at least two apertures being transversely formed through two lateral walls of the connection member and near two ends of the connection member respectively; one end of the connection member extending into the main body of the beam; at least one threaded assembly being passed through the apertures of one end of the connection member and the connection holes of one end of the main body of the beam to connect the connection member with the main body.
16. The beam as claimed in claim 12, wherein the apertures of the connection member are formed through the main body of the connection member.
Type: Application
Filed: Nov 20, 2014
Publication Date: Nov 12, 2015
Inventor: Lung Ching SHIH (Taichung City)
Application Number: 14/549,072