Length-adjustable truss type construction trestle

Abstract

A truss type construction trestle with the adjustable length comprises trusses and a cross beam, the trusses are two longitudinally-arranged main trusses, each main truss comprises an upper chord member, a lower chord member and a plurality of vertical rods, the upper ends and the lower ends of the vertical rods are fixedly connected with the upper chord members and the lower chord members respectively, and the upper chord members of the two main trusses are fixedly connected through the cross beam. Each of the upper chord and the lower chord is composed of at least one set of length-adjustable sleeve assembly, each sleeve assembly comprises an inner pipe, an inner sleeve, an outer sleeve and an outer pipe, one end of each outer pipe extends into the other end of the corresponding outer sleeve and is in threaded connection with the corresponding outer sleeve, and each inner sleeve extends into one end of the corresponding outer sleeve and is in threaded connection with the corresponding outer sleeve; the inner pipe extends into the inner sleeve and is in threaded connection with the inner sleeve, and the inner pipe can extend into the outer pipe. According to the trestle, the connection span length can be adjusted through the sleeve assemblies with the adjustable length, and disassembly, assembly and transportation are more convenient through modular assembly.

Description

Technical Field

[0001] The invention relates to a construction trestle, in particular to a truss-type construction trestle with adjustable length, belonging to the field of civil engineering. Background Art

[0002] With the development of civil engineering, the environment of construction sites is becoming more and more complex. During construction, a large number of construction trestles are used as temporary roads. Currently, most construction trestles are welded steel structures and need to be made according to the conditions on site. The production time is long and they cannot be reused, resulting in high costs for construction trestles.

[0003] CN105951576 A discloses a steel plate girder truss composite structure construction trestle, the length of the upper chord and the lower chord of the trestle cannot be adjusted, the manufacturing time is long, it cannot be reused, and the cost is high. Utility Model Content

[0004] The utility model aims to improve the problem that the existing welding construction trestle is not flexible enough.

[0005] The purpose of the utility model can be achieved through the following technical solutions.

[0006] A truss-type construction trestle with adjustable length comprises a truss and a crossbeam. The truss is two main trusses arranged longitudinally. The main trusses comprise an upper chord, a lower chord and a plurality of vertical poles. The upper and lower ends of the vertical poles are respectively fixedly connected to the upper chord and the lower chord. The upper chords of the two main trusses are fixedly connected via a crossbeam. The upper chord and the lower chord are respectively composed of at least one set of sleeve assemblies with adjustable length. One set of sleeve assemblies with adjustable length comprises an inner tube, an inner sleeve, an outer sleeve and an outer tube. One end of the outer tube extends into the other end of the outer sleeve and is connected to the outer sleeve by a thread. The inner sleeve extends into one end of the outer sleeve and is connected to the outer sleeve by a thread. The inner tube extends into the inner sleeve and is connected to the inner sleeve by a thread. The inner tube can extend into the outer tube.

[0007] Preferably, the lower chords of the two main trusses are fixedly connected via a cross beam.

[0008] Preferably: a base is also included, and the two ends of the upper chord rod are respectively fixedly mounted with the base.

[0009] Preferably: it also includes a beam, the base is in a ┛ shape, the bottom surface of the base is fixedly connected to the top surface of the beam, and the side surface of the base is fixedly connected to the upper chord.

[0010] Preferably: it also includes a base steel pipe, the base steel pipe is perpendicular to the upper chord rod, one end of the base is a horizontal pipe, and the other end is a hook, the horizontal end of the base is fixedly connected to the upper chord rod, and the hook end is hooked on the base steel pipe.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following advantages.

[0012] 1) The utility model adopts a steel tube truss structure, which is light in weight, strong in bearing capacity, and can achieve large-span connection.

[0013] 2) The length of the connection span can be adjusted by means of an adjustable length sleeve assembly.

[0014] 3) Realize connection in different construction environments by using different bases.

[0015] 4) Modular assembly makes disassembly, assembly and transportation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the pier.

[0017] Figure 2 This is a schematic diagram of the main view of the pier.

[0018] Figure 3 Schematic diagram of the modular structure of the trestle.

[0019] Figure 4 Schematic diagram of the inner and outer pipe connection structure.

[0020] Figure 5 This is a schematic diagram of the disassembly structure of the inner and outer tubes.

[0021] Figure 6 for Figure 4 , Figure 5 Schematic diagram of the left side.

[0022] Figure 7 Schematic diagram of the structure with the base installed on the concrete beam.

[0023] Figure 8 It is a structural schematic diagram of a ┛-shaped base.

[0024] Fig. 9 This is a structural schematic diagram of the base installed on the steel pipe.

[0025] The names of the accompanying drawings are as follows: 1. base; 1a. ┛-shaped base; 1b. hook-shaped base; 2. inner tube; 3. inner sleeve; 4. outer sleeve; 5. outer tube; 6. crossbeam; 7. rotating hinge support; 8. inner and outer tube connecting part; 9. base connecting part; 10. first external thread; 11. second external thread; 12. tightening direction of inner sleeve; 13. tightening direction of outer sleeve; 14. base partition; 15. loosening direction of inner sleeve; 16. loosening direction of outer sleeve; 17. bolt; 18. concrete beam; 19. bolt hole; 20 base steel pipe. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0027] like Figure 1-9 As shown, a truss-type construction trestle with adjustable length includes a truss and a crossbeam 6. The truss is two longitudinally arranged main trusses. The main trusses include a horizontally arranged upper chord and a lower chord and a plurality of vertical poles. The upper and lower ends of the vertical poles are respectively fixedly connected to the upper chord and the lower chord. The two ends of the crossbeam 6 are respectively connected to the upper chords of the two main trusses. A crossbeam 6 can also be arranged between the lower chords of the two main trusses, so that the lower chords of the two main trusses are fixedly connected to the two ends of the crossbeam 6. The upper chord and the lower chord are respectively composed of at least one set of sleeve assemblies with adjustable length. Two diagonal rods and a vertical rod are arranged at the bottom of the lower chord. The two ends of the lower chord are respectively connected to one end of the diagonal rod, the top of the vertical rod is connected to the lower chord, the bottom of the vertical rod and the other ends of the two diagonal rods are respectively connected to the rotating hinge support, and the diagonal rod is also composed of at least one set of sleeve assemblies with adjustable length.

[0028] A set of sleeve components with adjustable length includes an inner tube 2, an inner sleeve 3, an outer sleeve 4, and an outer tube 5. One end of the outer tube 5 is provided with a second external thread 11, and the other end of the outer sleeve 4 is provided with an internal thread adapted to the second external thread 11. One end of the outer tube 5 extends into the other end of the outer sleeve 4 and is threadedly connected to the outer sleeve 4; the outer circumference of the cylindrical inner sleeve 3 is provided with an external thread, and one end of the outer sleeve 4 is provided with an internal thread adapted to the external thread of the inner sleeve 3. The inner sleeve 3 extends into one end of the outer sleeve 4 and is threadedly connected to the outer sleeve 4; the inner tube 2 is provided with a first external thread 10, and the inner sleeve 3 is provided with an external thread adapted to the first external thread 10. The inner tube 2 extends into the inner sleeve 3 and is fixedly connected to the inner sleeve 3 by threads. The outer diameter of the inner tube 2 is smaller than the inner diameter of the outer tube 5. The inner tube 2 and the outer tube 5 are both in the shape of round tubes. The center lines of the inner tube 2 and the outer tube 5 are located on the same axis. The inner tube 2 can be inserted into the outer tube 5. The length of the sleeve assembly can be adjusted by adjusting the length of the inner tube 2 inserted into the outer tube 5, thereby adjusting the length of the upper chord and the lower chord. The sleeve assembly can be installed before installing the trestle and assembled directly after being transported to the construction site.

[0029] Bases 1 are fixedly installed at both ends of the upper chord. In this embodiment, there are two types of bases 1, one is a ┛-shaped base 1a, and the other is a hook-shaped base 1b. One end of the hook-shaped base 1b is a horizontal tube, and the other end is a hook. When the structures on both sides of the trestle are concrete beams 18, the side of the ┛-shaped base 1a is fixedly connected to the inner tube 1 or the outer tube 5 in the casing assembly, and threaded holes 20 are set on the bottom surface of the ┛-shaped base 1a, and the ┛-shaped base 1a is fixed to the concrete beam 18 by bolts 17. When the two sides of the trestle are base steel pipes 20, the base steel pipe 20 is perpendicular to the upper chord, the horizontal end of the hook-shaped base 1b is fixedly connected to the inner tube 1 or the outer tube 5 in the casing assembly, and the hook end of the hook-shaped base 1b is fixed to the base steel pipe 20.

[0030] The installation method of the sleeve assembly in this embodiment is: first screw the inner tube 2 into the inner sleeve 3, screw the outer tube 5 into the outer sleeve 4, and then screw the inner sleeve 3 into the outer sleeve 4 to complete the assembly. When the length of the sleeve assembly needs to be adjusted, the length of the inner tube 2 extending into the outer tube 5 can be adjusted by rotating the inner tube 2, thereby achieving the extension and shortening of the sleeve assembly.

Claims

1. A truss construction trestle with adjustable length, comprising a truss and a crossbeam, wherein the truss is two longitudinally arranged main trusses, the main trusses comprising an upper chord, a lower chord, and a plurality of vertical poles, the upper and lower ends of the vertical poles are respectively fixedly connected to the upper chord and the lower chord, and the upper chords of the two main trusses are fixedly connected by a crossbeam, characterized in that : The upper chord rod and the lower chord rod are respectively composed of at least one group of sleeve assemblies with adjustable length. One group of sleeve assemblies with adjustable length includes an inner tube, an inner sleeve, an outer sleeve, and an outer tube. One end of the outer tube extends into the other end of the outer sleeve and is connected to the outer sleeve by a thread. The inner sleeve extends into one end of the outer sleeve and is connected to the outer sleeve by a thread. The inner tube extends into the inner sleeve and is connected to the inner sleeve by a thread. The inner tube can extend into the outer tube.

2. The trestle according to claim 1, characterized in that: The lower chords of the two main trusses are fixedly connected by a cross beam.

3. The trestle according to claim 1, characterized in that: The utility model also comprises a base, and the bases are respectively fixedly installed at both ends of the upper chord rod.

4. The trestle according to claim 3, characterized in that: It also includes a beam, the base is in a ┛ shape, the bottom surface of the base is fixedly connected to the top surface of the beam, and the side surface of the base is fixedly connected to the upper chord rod.

5. The trestle according to claim 3, characterized in that: It also includes a base steel pipe, which is perpendicular to the upper chord rod. One end of the base is a horizontal pipe and the other end is a hook. The horizontal end of the base is fixedly connected to the upper chord rod, and the hook end is hooked on the base steel pipe.

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