A large-span high-strength truss

Abstract

The present invention discloses a large-span high-strength truss in the field of truss technology, comprising four groups of circular tubes with the same structure; connecting rods are arranged on the four groups of circular tubes, and the four groups of circular tubes are mutually connected through the connecting rods; the circular tubes, limiting cylinders and movable rods at both ends are fixed together, so that when the circular tubes are subjected to force, the force is transmitted to the end movable rods through the limiting cylinders, and then the adjacent movable rods are engaged together, so that each group of movable rods can be subjected to force, thereby effectively sharing the tensile force on the circular tubes, improving the strength of the circular tubes, and being convenient for overall disassembly and assembly, and easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of trusses, in particular to a large-span high-strength truss. Background Art

[0002] A truss is a structure made of rods connected to each other with hinges at both ends. A truss is a plane or space structure composed of straight rods, generally with triangular units. The truss rods mainly bear axial tension or pressure, so that the strength of the material can be fully utilized. When the span is large, it can save materials, reduce deadweight and increase rigidity compared to solid beams. The advantage of a truss is that the rods mainly bear tension or pressure, which can give full play to the role of the material, save materials and reduce the weight of the structure. Commonly used ones include steel trusses, reinforced concrete trusses, prestressed concrete trusses, wooden trusses, steel-wood composite trusses, and steel-concrete composite trusses.

[0003] When the current truss span is too large, the circular tube will be subjected to strong tensile force, which will easily increase the risk of circular tube breakage in the long run and cause the truss to collapse. For this reason, we propose a large-span high-strength truss. Summary of the invention

[0004] The object of the present invention is to provide a large-span high-strength truss to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a large-span high-strength truss, comprising four groups of circular tubes with the same structure;

[0006] The four groups of round tubes are all provided with connecting rods, and the four groups of round tubes are connected to each other through the connecting rods;

[0007] The four groups of round tubes are all provided with tensile components.

[0008] As a preferred solution of a large-span and high-strength truss described in the present invention, the tensile assembly includes several groups of engaging devices with the same structure and two groups of limiting devices with the same structure, the two groups of limiting devices are respectively arranged on both sides of the circular tube, the inner wall of the circular tube is evenly fitted and connected with movable rods, the movable rods at both ends are respectively fixedly connected to the two groups of limiting devices, and the two adjacent groups of movable rods are connected by engaging devices.

[0009] As a preferred solution of the large-span high-strength truss described in the present invention, a through hole is opened inside the movable rod, and the axis of the through hole coincides with the axis of the circular tube.

[0010] As a preferred solution of a large-span and high-strength truss described in the present invention, the engaging device comprises a circular ring, which is arranged at the left end of the movable rod, and a truncated cone ring is arranged at the left end of the circular ring, and the cross-sectional area of ​​the left side of the truncated cone ring is smaller than the cross-sectional area of ​​the right side of the truncated cone ring, the axes of the truncated cone ring and the circular ring coincide with the axis of the through hole, connecting blocks are arranged on both sides of the right end of the movable rod, a through groove is opened on the connecting block, a spring is vertically arranged on the through groove, a sliding rod is arranged on the spring, and the sliding rod is slidably connected to the through groove, the sliding rod passes through the connecting block, and one end of the sliding rod passing through the connecting block is connected to a ball seat, a universal ball is movably connected to the ball seat, the outer wall of the universal ball is in contact with the circular ring, and the ball seat is in contact with both the truncated cone ring and the movable rod.

[0011] As a preferred solution of the large-span high-strength truss described in the present invention, a handle is provided at one end of the sliding rod located in the through groove, and the handle is a side U-shaped structure.

[0012] As a preferred solution of the large-span high-strength truss described in the present invention, insert rings are provided on the sides of the movable rods at both ends that are away from each other.

[0013] As a preferred solution of a large-span and high-strength truss described in the present invention, the limiting device includes a limiting cylinder which is fitted on the inner wall of a circular tube, a mounting screw is provided on the circular tube, and the circular tube is fixedly connected to the limiting cylinder through the mounting screw, the limiting cylinder is fitted with the movable rod at the end, the plug ring is plugged into the limiting cylinder, a fixing screw is provided on the circular tube, and the fixing screw passes through the limiting cylinder and is connected to the plug ring, a countersunk hole is opened on the circular tube, and the mounting screw and the fixing screw are both installed in the countersunk hole.

[0014] As a preferred solution of a large-span and high-strength truss described in the present invention, the right ends of the inner walls of the four groups of circular tubes are each provided with an internal threaded plate, one group of the internal threaded plates is threadedly connected with a threaded rod, the left end of the threaded rod is fitted with the limiting cylinder on the right side, and the right end of the threaded rod is connected with a rotating block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by installing a movable rod in a circular tube, and then installing a limiting cylinder on both sides of the circular tube, the circular tube, the limiting cylinder and the movable rods at both ends are fixed together, so that when the circular tube is subjected to force, the force is transmitted to the end movable rods through the limiting cylinder, and then the adjacent movable rods are engaged together, so that each group of movable rods can be subjected to force, thereby effectively sharing the tensile force on the circular tube, improving the strength of the circular tube, and being easy to disassemble and assemble as a whole, and convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic cross-sectional view of the circular tube and tensile component structure of a large-span high-strength truss of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of a large-span high-strength truss of the present invention;

[0018] Figure 3 This is a schematic diagram of the external structure of the movable rod and the engaging device of a large-span high-strength truss of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure at point A of a large-span, high-strength truss of the present invention.

[0020] In the figure: 1. round tube; 2. connecting rod; 3. limiting cylinder; 4. mounting screw; 5. movable rod; 6. through hole; 7. circular ring; 8. truncated cone ring; 9. connecting block; 10. through groove; 11. spring; 12. sliding rod; 13. ball seat; 14. universal ball; 15. handle; 16. insert ring; 17. fixing screw; 18. internal thread plate; 19. threaded rod; 20. rotating block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] Reference Figures 1 to 4 ,A long-span high-strength truss, comprising ,four groups of circular tubes 1 with the same structure;

[0024] The four groups of round tubes 1 are all provided with connecting rods 2, and the four groups of round tubes 1 are connected to each other through the connecting rods 2, which is the inherent structure of the existing truss;

[0025] The four groups of round tubes 1 are all provided with tensile components.

[0026] The tensile assembly includes several groups of bite devices with the same structure and two groups of limit devices with the same structure. The two groups of limit devices are respectively arranged on both sides of the circular tube 1. The inner wall of the circular tube 1 is evenly fitted with movable rods 5. The movable rods 5 at both ends are respectively fixedly connected to the two groups of limit devices. The two adjacent groups of movable rods 5 are connected by bite devices, so that all the movable rods 5 can be fixed together, so that the circular tube is fixed together with the movable rods 5 through the limit devices.

[0027] A through hole 6 is formed inside the movable rod 5 , and the axis of the through hole 6 coincides with the axis of the circular tube 1 , thereby reducing the cost of producing the movable rod 5 .

[0028] The engaging device includes a ring 7, which is arranged at the left end of the movable rod 5. A truncated cone ring 8 is arranged at the left end of the ring 7, and the cross-sectional area of ​​the left side of the truncated cone ring 8 is smaller than the cross-sectional area of ​​the right side of the truncated cone ring 8, so that when the universal ball 14 moves on the truncated cone ring 8, the spring 11 can be gradually compressed. The axes of the truncated cone ring 8 and the ring 7 coincide with the axis of the through hole 6. Both sides of the right end of the movable rod 5 are provided with connecting blocks 9, and a through groove 10 is opened on the connecting block 9. A spring 11 is vertically arranged on the through groove 10. A slide rod 12 is provided on the spring 11, and the slide rod 12 is slidably connected to the through groove 10. The slide rod 12 passes through the connecting block 9. One end of the slide rod 12 passing through the connecting block 9 is connected to a ball seat 13. A universal ball 14 is movably connected to the ball seat 13. The outer wall of the universal ball 14 is in contact with the circular ring 7. The ball seat 13 is in contact with both the truncated cone ring 8 and the movable rod 5. After the universal ball 14 is not squeezed by the truncated cone ring 8, the ball seat 13 is limited by the truncated cone ring 8 and the movable rod 5, so that the adjacent movable rods 5 can be engaged together.

[0029] A handle 15 is provided at one end of the slide bar 12 in the through slot 10. The handle 15 is in a side U-shaped structure. Through the through slot 10, the handle 15 is easily pulled to remove the universal ball 14 and disassemble the mutually engaged movable rods 5.

[0030] The two end movable rods 5 are provided with insert rings 16 on the sides away from each other. The insert rings 16 are used to be inserted into the limiting tube 3, so as to facilitate fixing the round tube 1, the limiting tube 3 and the two end movable rods 5 together by fixing screws 17.

[0031] The limiting device includes a limiting cylinder 3 which is fitted on the inner wall of the circular tube 1, a mounting screw 4 is provided on the circular tube 1, and the circular tube 1 is fixedly connected to the limiting cylinder 3 by the mounting screw 4, so as to facilitate fixing the limiting cylinder 3 on the circular tube 1, the limiting cylinder 3 is fitted with the end movable rod 5, the plug ring 16 is plugged into the limiting cylinder 3, a fixing screw 17 is provided on the circular tube 1, and the fixing screw 17 passes through the limiting cylinder 3 and is connected to the plug ring 16, a countersunk hole is provided on the circular tube 1, the mounting screw 4 and the fixing screw 17 are both installed in the countersunk hole, after the limiting cylinder 3 is plugged into the plug ring 16 on the end movable rod 5 by the fixing screw 17, the circular tube 1, the limiting cylinder 3 and the plug ring 16 can be fixed together by the fixing screw 17, so that the circular tube 1, the limiting cylinder 3 and the end movable rod 5 can be fixed together.

[0032] Example 2

[0033] Reference Figure 2, an internal threaded plate 18 is provided at the right end of the inner wall of the four groups of round tubes 1, one group of the internal threaded plates 18 is threadedly connected with a threaded rod 19, the left end of the threaded rod 19 is fitted with the right side limiting tube 3, and the right end of the threaded rod 19 is connected with a rotating block 20. Take the threaded rod 19 and install it on the internal threaded plate 18, then rotate the rotating block 20 to make the threaded rod 19 rotate left to the required position, then take a limiting tube 3 and install it into the round tube 1, until the limiting tube 3 is blocked by the threaded rod 19 and stops, at this time, the installation screw 4 can be installed, and the threaded rod 19 plays the role of positioning the right side limiting tube 3, after installing one group of limiting tubes 3, remove the threaded rod 19, and then install it on the internal threaded plate 18 on another round tube 1 to position the other limiting tube 3.

[0034] The rest of the structure is the same as that of Example 1.

[0035] Usage process: Step 1: Take the threaded rod 19 and install it on the internal threaded plate 18, then rotate the rotating block 20 to rotate the threaded rod 19 to the left to the required position, then take a limiting cylinder 3 and install it into the round tube 1 until the limiting cylinder 3 is blocked by the threaded rod 19. At this time, install the mounting screw 4 into the countersunk hole of the round tube 1 to fix the round tube 1 and the limiting cylinder 3 on the right side together;

[0036] Step 2: Install the required number of movable rods 5 into the circular tube 1. After installation, install another limiting cylinder 3 into the circular tube 1. Fix the left limiting cylinder 3 again by installing the screw 4. After the left limiting cylinder 3 is installed, the universal ball 14 rolls on the side wall of the truncated cone ring 8, first overcoming the pressure of the spring 11, and driving the universal ball 14 to move upward. When the universal ball 14 is facing the circular ring 7, the spring 11 pushes the slide bar 12 to move, which can drive the universal ball 14 to contact the circular ring 7, and the ball seat 13 contacts the truncated cone ring 8 and the movable rod 5, so that the ball seat 13 can be limited, and then the slide bar 12 can be limited, thereby limiting the connection block 9, so that after the limiting cylinders 3 on both sides are fixed, the adjacent movable rods 5 can be fixed together in pairs;

[0037] Step 3: After the limiting cylinder 3 is plugged into the plug ring 16 on the end movable rod 5, the round tube 1, the limiting cylinder 3 and the plug ring 16 can be fixed together by fixing the screws 17, so that the round tube 1, the limiting cylinder 3 and the end movable rod 5 can be fixed together, completing the installation of a set of tensile components;

[0038] Step 4: Repeat the above steps to install the tensile components on the remaining round tube 1, so that when the round tube 1 receives tension, it is transmitted to the movable rods 5 at both ends through the limit cylinder 3, and then through the bite device, each group of movable rods 5 can be subjected to force, thereby effectively sharing the tension on the round tube 1 and improving the strength of the round tube 1.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-span high-strength truss, characterized by: include, Four groups of circular tubes with the same structure (1); The four groups of round tubes (1) are all provided with connecting rods (2), and the four groups of round tubes (1) are connected to each other via the connecting rods (2); The four groups of circular tubes (1) are all provided with tensile components; The anti-tension assembly comprises a plurality of groups of engaging devices with the same structure and two groups of limiting devices with the same structure, the two groups of limiting devices being respectively arranged on both sides of the circular tube (1), the inner wall of the circular tube (1) being evenly fitted with movable rods (5), the movable rods (5) at both ends being respectively fixedly connected to the two groups of limiting devices, and the two adjacent groups of movable rods (5) being connected via the engaging devices; A through hole (6) is provided inside the movable rod (5), and the axis of the through hole (6) coincides with the axis of the circular tube (1); The engaging device comprises a circular ring (7), the circular ring (7) being arranged at the left end of the movable rod (5), a truncated cone ring (8) being arranged at the left end of the circular ring (7), and the cross-sectional area of ​​the left side of the truncated cone ring (8) is smaller than the cross-sectional area of ​​the right side of the truncated cone ring (8), the axes of the truncated cone ring (8) and the circular ring (7) are coincident with the axis of the through hole (6), and connecting blocks (9) are arranged on both sides of the right end of the movable rod (5), and a through groove (10) is formed on the connecting block (9), and the through groove (10) A spring (11) is vertically arranged on the upper side, a slide rod (12) is arranged on the spring (11), and the slide rod (12) is slidably connected to the through groove (10), the slide rod (12) passes through the connecting block (9), one end of the slide rod (12) passing through the connecting block (9) is connected to a ball seat (13), a universal ball (14) is movably connected to the ball seat (13), the outer wall of the universal ball (14) is in contact with the circular ring (7), and the ball seat (13) is in contact with both the truncated cone ring (8) and the movable rod (5).

2. A large-span high-strength truss according to claim 1, characterized in that: A handle (15) is provided at one end of the slide rod (12) located in the through slot (10), and the handle (15) is in a side U-shaped structure.

3. The large-span high-strength truss according to claim 1, characterized in that: Insert rings (16) are provided on the sides of the movable rods (5) at both ends that are away from each other.

4. The large-span high-strength truss according to claim 3, characterized in that: The limiting device comprises a limiting cylinder (3) which is fitted and connected to the inner wall of the circular tube (1); a mounting screw (4) is provided on the circular tube (1), and the circular tube (1) is fixedly connected to the limiting cylinder (3) through the mounting screw (4); the limiting cylinder (3) is fitted with the movable rod (5) at the end; the plug ring (16) is plugged into the limiting cylinder (3); a fixing screw (17) is provided on the circular tube (1), and the fixing screw (17) passes through the limiting cylinder (3) and is connected to the plug ring (16); a countersunk hole is opened on the circular tube (1), and the mounting screw (4) and the fixing screw (17) are both installed in the countersunk hole.

5. The large-span high-strength truss according to claim 4, characterized in that: The right ends of the inner walls of the four groups of circular tubes (1) are all provided with internal thread plates (18), one group of the internal thread plates (18) is threadedly connected to a threaded rod (19), the left end of the threaded rod (19) is in contact with the right side limit tube (3), and the right end of the threaded rod (19) is connected to a rotating block (20).

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