Abstract: 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.

Abstract: A construction beam connection device includes an abutment member, a connection member positioned under the abutment member and a threaded assembly fixedly connected with the abutment member and extending through the connection member. The connection device can be directly mounted at the junction between beams. The threaded assembly serves to fasten the abutment member to the connection member so as to securely connect the construction beams with each other. Accordingly, the safety in working can be ensured and the working is facilitated.

Abstract: A ladder apparatus adapted for a scaffold is disclosed. The ladder apparatus includes a ladder, two top connection components disposed at a top of the ladder, two bottom connection components disposed at a bottom of the ladder, and two platform assemblies connecting the ladder. The ladder includes two lateral rails and a plurality of step shelves arranged between the rails. Each platform assembly has a platform, two fasteners connected respectively to opposite ends of an external side of the platform, two straddlers connected respectively to opposite ends of an internal side of the platform, and two retainers protruding respectively from two lateral sides of the platform. The ladder connects the internal sides of the two platform assemblies via the top and bottom connection components respectively. The platform assemblies stride over and are against two lateral stringers of the scaffold via the straddlers and join the scaffold via the fasteners.

Abstract: A construction prop includes an outer tube and an inner tube wherein the inner tube telescopically fitted in the outer tube. The top end of the outer tube has a threaded section axially formed with a pair of slots. The inner tube is axially formed with several pairs of pinholes. A locating nut is screwed on the threaded section of the outer tube. A controlling member formed with a pair of through holes is fitted on the outer tube. A bottom end of the controlling member is rotatably connected with the locating nut. A top face of the controlling member is formed with recessed/projecting structures. An insertion pin is fitted through the slots of the outer tube and inserted in one pair of pinholes of the inner tube, and is rested on the top face of the controlling member, whereby the prop can support a horizontal moldboard.

Abstract: A prop for construction. The prop includes an outer tube and an inner tube telescopically fitted in the outer tube. The top end of the outer tube has a threaded section axially formed with a pair of slots. The inner tube is axially formed with several pairs of pinholes. A locating nut is screwed on the threaded section of the outer tube. A controlling member formed with a pair of through holes is fitted on the outer tube. A bottom end of the controlling member is rotatably connected with the locating nut. A top face of the controlling member is formed with recessed/projecting structures. An insertion pin is fitted through the slots of the outer tube and inserted in one pair of pinholes of the inner tube, and is rested on the top face of the controlling member, whereby the prop can support a horizontal moldboard. By means of turning the controlling member, the insertion pin and the inner tube can be quickly lowered to separate the top end of the prop from the moldboard.

Abstract: Prop connecting ring which is fitted and bound on a construction prop, including: two symmetrical half bodies which are substantially semicircular, an inner face of each half body being formed with a semicircular clamping face, a body of each half body being formed with a predetermined number of insertion holes; rear ends of two half bodies being pivotally connected with each other, whereby the two half bodies can be opened or closed; a first detention hole formed on front end of a first half body; a second detention hole formed on front end of a second half body, when the front ends of the two half bodies are closed, the second detention hole being positioned right under the first detention hole, a rear edge of front end of the second half body being formed with an abutting face positioned at a height lower than the first detention hole; and an insertion fastener which is a wedge bar inserted in the detention holes of the two half bodies for latching the front ends of the two half bodies with each other.

Abstract: Steel prop capable of bearing bidirectional applied force, including: an outer tube; an inner tube having a bottom end slidably nested in the outer tube; two clamping members, an inner circumferential face of each clamping member being formed with several transverse thread sections, a pressed section being formed on outer circumferential face of the clamping member, two lateral sides of the clamping members being such connected that they can be moved toward or away from each other within a certain distance without departure; and a retaining member. Inner circumference of the retaining member is formed with two inward projecting engaging lips at equal intervals. A bottom face of the engaging lip is formed with a pressing face. The retaining member is rotatably fitted around top end of the outer tube without departing therefrom. The bottom ends of the clamping members are positioned on the conic face of top end of the outer tube.

Abstract: Steel prop capable of bearing bidirectional applied force, including: an outer tube; an inner tube having a bottom end slidably nested in the outer tube; two clamping members, an inner circumferential face of each clamping member being formed with several transverse thread sections, a pressed section being formed on outer circumferential face of the clamping member, two lateral sides of the clamping members being such connected that they can be moved toward or away from each other within a certain distance without departure; and a retaining member. Inner circumference of the retaining member is formed with two inward projecting engaging lips at equal intervals. A bottom face of the engaging lip is formed with a pressing face. The retaining member is rotatably fitted around top end of the outer tube without departing therefrom. The bottom ends of the clamping members are positioned on the conic face of top end of the outer tube.

Abstract: Prop connecting ring which is fitted and bound on a construction prop, including: two symmetrical half bodies which are substantially semicircular, an inner face of each half body being formed with a semicircular clamping face, a body of each half body being formed with a predetermined number of insertion holes; rear ends of two half bodies being pivotally connected with each other, whereby the two half bodies can be opened or closed; a first detention hole formed on front end of a first half body; a second detention hole formed on front end of a second half body, when the front ends of the two half bodies are closed, the second detention hole being positioned right under the first detention hole, a rear edge of front end of the second half body being formed with an abutting face positioned at a height lower than the first detention hole; and an insertion fastener which is a wedge bar inserted in the detention holes of the two half bodies for latching the front ends of the two half bodies with each other.