Portable supporting device for net rack rod piece replacement

Abstract

The utility model provides a portable supporting device for replacing a net rack rod piece, and belongs to the technical field of net rack construction. According to the technical scheme, the device comprises a telescopic device, standard knots are arranged at the two ends of the telescopic device, fixed ends are arranged at the free ends of the standard knots on the two sides, and the free ends of the fixed ends on the two sides are connected with rod pieces on the two sides of a ball joint on a net rack respectively; the telescopic device comprises a sleeve and two barrel-shaped connecting pieces, internal threads are arranged on the inner wall of the sleeve, external threads matched with the internal threads are arranged on the two barrel-shaped connecting pieces, and the two barrel-shaped connecting pieces are arranged on the two sides of the sleeve respectively through matching of the internal threads and the external threads. The telescopic device has the advantages that structural stress can be guaranteed not to be changed before original rod pieces are dismantled, the distance between the ball joints can be adjusted by fixing the telescopic device and the rod pieces on the two sides of the ball joints and applying torque to the telescopic device, the telescopic device can reach the original stress state, and the distance between the ball joints can be adjusted without other external force before replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of grid construction, in particular to a portable supporting device for replacing grid rods. Background Art

[0002] During the construction of the grid, the force system of some rods (especially the lower chord) deviates from the design, and the overall structure is a tension member, but it is a compression member at a certain stage of construction, which will cause some members to buckle and deform during construction. Before the grid is put into use, the deformed rods need to be replaced. Directly removing the deformed rods will cause the force of the overall structure to change. Therefore, a support device that is easy to install and disassemble can be designed to complete the replacement of rods without changing the overall force. Considering the situation of high-altitude operations, it is designed to be light and easy to carry.

[0003] Most existing methods for replacing grid rods are to remove the rod and then replace it with a new rod whose length cannot be adjusted. In actual projects, this approach will cause stress changes in the overall structure and cannot guarantee the absolute safety of the project.

[0004] The method of directly removing the rods for rod replacement has the following defects: (1) If the rods of the grid structure are broken, the ball nodes at both ends will be greatly displaced. When you want to install new rods again, you must apply a huge external force to return the spacing between the ball nodes to the initial state, which is difficult to implement in actual projects. (2) Removing deformed rods will cause changes in the stress of the overall structure, which will lead to other engineering problems. (3) In order to facilitate replacement installation, the distance between the ball nodes after the rods are removed is generally used as the length of the replacement rods. This is contrary to the original design and will cause the replaced rods to be less stressed or basically unstressed, which will still cause changes in the stress of the overall structure.

[0005] To this end, this article provides a portable support device for replacing grid rods. Utility Model Content

[0006] The utility model aims to provide a portable supporting device for replacing grid rods, which can ensure that the stress of the overall structure remains unchanged.

[0007] The utility model is achieved through the following measures:

[0008] A portable support device for replacing grid rods, characterized in that it comprises a telescopic device, both ends of the telescopic device are provided with standard sections, the free ends of the standard sections on both sides are provided with fixed ends, and the free ends of the fixed ends on both sides are respectively connected to the rods on both sides of the ball node on the grid;

[0009] The telescopic device includes a sleeve and two cylindrical connecting parts. The inner wall of the sleeve is provided with an internal thread, and the two cylindrical connecting parts are provided with external threads that cooperate with the internal thread. The two cylindrical connecting parts are respectively arranged on both sides of the sleeve through the cooperation of the internal thread and the external thread.

[0010] The specific features of the utility model also include:

[0011] Flanges are welded at both ends of the telescopic device, both ends of the standard section and the corresponding ends of the fixed ends. The telescopic device, the standard sections on both sides and the two fixed ends are connected into a whole through the flanges. The specific flanges are provided with mounting holes, and related components are connected by bolts passing through the mounting holes.

[0012] The threads on the cylindrical connecting members on both sides of the sleeve have opposite rotation directions.

[0013] The sleeve includes a left sleeve and a right sleeve, the left sleeve is provided with an annular groove on the end face away from the corresponding cylindrical connecting piece, and the corresponding right sleeve end face is provided with an annular protrusion matching with the annular groove, and the protrusion is inserted into the groove, and the left sleeve and the right sleeve are both provided with matching through holes, and the through holes pass through the corresponding grooves or protrusions, and bolts are provided through the through holes to connect and fix the left sleeve and the right sleeve. When in use, the length of the device is adjusted according to the length of the rod to be removed. When adjusting, the bolts are first removed, and then the left sleeve and the right sleeve are rotated to the appropriate position, and then the left sleeve and the right sleeve are connected and fixed by the bolts.

[0014] The fixed end includes a pair of long rods arranged on the corresponding flanges, and a pair of semi-arc steel sheets that cooperate with each other are arranged at the free ends of the long rods. The two semi-arc steel sheets are respectively provided with fixing rings, and the two fixing rings are staggered and can pass bolts to fix the two semi-arc steel sheets. The two semi-arc steel sheets can be opened and closed freely. Specifically, the semi-arc steel sheets are thin steel sheets, which can be opened and closed freely by their own elasticity, and can be fixed by bolts after wrapping the rods at both ends of the ball node, so as to better fix the device above the rod to be replaced;

[0015] The fixed end of the structure can better stabilize the device, and can keep the device stable when the device applies pressure to both ends, while not affecting the construction when the rod is replaced.

[0016] Both ends of the telescopic device, both ends of the standard section and the corresponding ends of the fixed end are welded with steel plates, and the steel plates are welded to the corresponding flanges. The steel plates prevent the flanges from being damaged when the device applies force to both ends, thereby improving the integrity of the device. In addition, stiffening ribs are welded between the cylindrical connectors on both sides and the corresponding steel plates.

[0017] The flange and the standard section are both U-shaped lattice bodies, in order to leave space for the rods to be replaced and facilitate construction by workers. There are three groups of corresponding telescopic devices, and the three groups of telescopic devices are evenly arranged between two corresponding flanges.

[0018] The standard section comprises a U-shaped plate, the two ends of the U-shaped plate are welded with corresponding steel plates, and the steel plates on both sides are welded with corresponding flanges. The number of standard sections to be installed can be determined by the spacing of ball nodes on site, thereby increasing or decreasing.

[0019] A shoulder strap is provided at the top of the standard section. The device can be made of aluminum alloy, so that the entire device can be easily carried by the shoulder strap. After the worker disassembles the device from the middle of the sleeve, he can carry the device to the next rod replacement location. Installing the shoulder strap can facilitate the worker to carry the device.

[0020] The outer side surface of the sleeve is set to be hexagonal, which is convenient for on-site wrench construction.

[0021] When in use, the device is brought to a suitable location via the shoulder strap, the bolts are then removed, and the left tube and the right tube are rotated to appropriate positions, and then the left tube and the right tube are connected and fixed via the bolts, and then the semi-arc steel sheets on the fixed ends are fixed to the rods on both sides of the ball node on the grid, and then the grid rods can be removed and replaced.

[0022] The beneficial effects of the utility model are as follows: the utility model can ensure that the stress of the structure will not change before the original rods are removed. By fixing the device to the rods on both sides of the ball node and applying torque to the telescopic device, the distance between the ball nodes can be adjusted to reach the original stress state. No other external force is required to adjust the spacing between the ball nodes before replacement. The entire replacement process conforms to the mechanical assumptions of the overall structure, and the construction is simple and easy to operate. The utility model can be divided into several parts, and standardized production can be carried out for standard sections, flanges, telescopic devices, etc. of the same specifications, and the structure is simple and easy to produce. In addition, the utility model is made of aluminum alloy material, which is light while ensuring the strength and rigidity of the device. The design that can divide the device into two parts from the middle of the sleeve and the shoulder strap design on the upper part of the standard section make it convenient for workers to carry the device and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the fixed end in an embodiment of the utility model.

[0025] Figure 3 for Figure 1 Schematic diagram of the cross section of AA.

[0026] Figure 4 for Figure 1 Schematic diagram of the cross section of BB.

[0027] Among them, the figure markings are: 1. fixed end; 2. flange; 3. standard section; 4. steel plate; 5. sleeve; 6. stiffening rib; 7. tubular connecting part; 8. shoulder strap; 9. bolt; 10. semi-arc steel sheet; 11. long rod; 12. U-shaped plate. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0032] See also Figure 1-4 A portable support device for replacing grid rods, comprising a telescopic device, both ends of which are provided with standard sections 3, the free ends of the standard sections 3 on both sides are provided with fixed ends 1, and the free ends of the fixed ends 1 on both sides are respectively connected to the rods on both sides of the ball node on the grid;

[0033] The telescopic device includes a sleeve 5 and two cylindrical connectors 7. The inner wall of the sleeve 5 is provided with an internal thread, and the two cylindrical connectors 7 are provided with external threads matching the internal threads. The two cylindrical connectors 7 are respectively arranged on both sides of the sleeve 5 through the matching of the internal threads and the external threads.

[0034] Flanges 2 are welded at both ends of the telescopic device, both ends of the standard section 3 and the corresponding end of the fixed end 1. The telescopic device, the standard sections 3 on both sides and the two fixed ends 1 are connected into a whole through the flanges 2. The specific flanges are provided with mounting holes, and related components are connected by bolts passing through the mounting holes.

[0035] The threads on the cylindrical connectors 7 on both sides of the sleeve have opposite rotation directions.

[0036] The sleeve includes a left sleeve and a right sleeve. An annular groove is arranged on the end face of the left sleeve away from the corresponding cylindrical connecting member 7, and an annular protrusion matching the annular groove is arranged on the corresponding end face of the right sleeve. The protrusion is inserted into the groove. Matching through holes are arranged on the left sleeve and the right sleeve. The through holes pass through the corresponding grooves or protrusions. Bolts 9 are arranged through the through holes to connect and fix the left sleeve and the right sleeve. When in use, the length of the device is adjusted according to the length of the rod to be removed. When adjusting, the bolts 9 are first removed, and then the left sleeve and the right sleeve are rotated to the appropriate position, and then the left sleeve and the right sleeve are connected and fixed by the bolts 9.

[0037] The fixed end 1 includes a pair of long rods 11 arranged on the corresponding flange 2, and a pair of semi-arc steel sheets 10 that cooperate with each other are arranged at the free end of the long rod 11. The two semi-arc steel sheets 10 are respectively provided with fixing rings, and the two fixing rings are staggered and can pass bolts to fix the two semi-arc steel sheets 10. The two semi-arc steel sheets 10 can be opened and closed freely. Specifically, the semi-arc steel sheets 10 are thin steel sheets, which can be opened and closed freely by their own elasticity, and can be fixed by bolts after wrapping the rods at both ends of the ball node, so as to better fix the device above the rod to be replaced;

[0038] The fixed end of the structure can better stabilize the device, and can keep the device stable when the device applies pressure to both ends, while not affecting the construction when the rod is replaced.

[0039] Steel plates 4 are welded at both ends of the telescopic device, both ends of the standard section 3 and the corresponding end of the fixed end 1. The steel plates 4 are welded to the corresponding flanges 2. The steel plates 4 prevent the flanges from being damaged when the device applies force to both ends, thereby improving the integrity of the device. In addition, stiffening ribs 6 are welded between the cylindrical connectors 7 on both sides and the corresponding steel plates 4.

[0040] The flange 2 and the standard section 3 are both U-shaped lattice bodies. In order to leave space for the rods to be replaced and facilitate construction by workers, there are three groups of corresponding telescopic devices, which are evenly arranged between two corresponding flanges 2.

[0041] The standard section 3 includes a U-shaped plate 12, with corresponding steel plates 4 welded at both ends of the U-shaped plate 12, and corresponding flanges 2 welded on the steel plates 4 on both sides. The number of standard sections 3 to be installed can be determined by the on-site ball node spacing, thereby increasing or decreasing.

[0042] A shoulder strap 8 is provided at the top of the standard section 3. The device can be made of aluminum alloy, so that the entire device can be easily carried through the shoulder strap 8. After the worker disassembles the device from the middle of the sleeve, he can carry the device to the next rod replacement location. Installing the shoulder strap can facilitate the worker to carry the device.

[0043] The outer side surface of the sleeve is set to be hexagonal, which is convenient for on-site wrench construction.

[0044] When in use, the device is brought to a suitable location via the shoulder strap 8, and then the bolts 9 are removed. The left and right cylinders are then rotated to appropriate positions, and then the left and right cylinders are connected and fixed via the bolts 9. The semi-arc steel sheets 10 on the fixed ends 1 are then fixed to the rods on both sides of the ball nodes on the grid, and then the grid rods can be removed and replaced.

[0045] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A portable support device for replacing grid rods, characterized in that: It comprises a telescopic device, wherein both ends of the telescopic device are provided with standard sections (3), the free ends of the standard sections (3) on both sides are provided with fixed ends (1), and the free ends of the fixed ends (1) on both sides are respectively connected to the rods on both sides of the ball node on the grid; The telescopic device comprises a sleeve (5) and two cylindrical connecting parts (7), the inner wall of the sleeve (5) is provided with an internal thread, the two cylindrical connecting parts (7) are provided with external threads matching the internal thread, and the two cylindrical connecting parts (7) are respectively arranged on both sides of the sleeve (5) through the matching of the internal thread and the external thread.

2. The portable support device for replacing grid rods according to claim 1, characterized in that: Flanges (2) are welded to both ends of the telescopic device, both ends of the standard section (3) and the corresponding ends of the fixed ends (1); the telescopic device, the standard sections (3) on both sides and the two fixed ends (1) are connected as a whole via the flanges (2).

3. The portable support device for replacing grid rods according to claim 1, characterized in that: The threads on the cylindrical connecting parts (7) on both sides of the sleeve have opposite rotation directions.

4. The portable support device for replacing grid rods according to claim 3, characterized in that: The sleeve includes a left sleeve and a right sleeve. The end surface of the left sleeve away from the corresponding cylindrical connecting piece (7) is provided with an annular groove, and the end surface of the corresponding right sleeve is provided with an annular protrusion matching with the annular groove, and the protrusion is inserted into the groove. The left sleeve and the right sleeve are both provided with matching through holes, and the through holes pass through the corresponding grooves or protrusions. Bolts (9) are provided through the through holes to connect and fix the left sleeve and the right sleeve.

5. The portable support device for replacing grid rods according to claim 2, characterized in that: The fixed end (1) comprises a pair of long rods (11) arranged on the corresponding flange (2), and a pair of mutually matching semi-arc steel sheets (10) are arranged at the free end of the long rods (11). A fixing ring is respectively arranged on the two semi-arc steel sheets (10), and the two fixing rings are staggered and can be fixed by bolts passing through the two semi-arc steel sheets (10).

6. The portable support device for replacing grid rods according to claim 2, characterized in that: Steel plates (4) are welded to both ends of the telescopic device, both ends of the standard section (3) and the corresponding ends of the fixed end (1), and the steel plates (4) are welded to the corresponding flanges (2).

7. The portable support device for replacing grid rods according to claim 2, characterized in that: The flange (2) and the standard section (3) are both U-shaped lattice bodies, and three groups of corresponding telescopic devices are provided in total, and the three groups of telescopic devices are evenly arranged between two corresponding flanges (2).

8. The portable support device for replacing grid rods according to claim 6, characterized in that: The standard section (3) comprises a U-shaped plate (12), the two ends of the U-shaped plate (12) are welded with corresponding steel plates (4), and the steel plates (4) on both sides are welded with corresponding flanges (2).

9. The portable support device for replacing grid rods according to claim 8, characterized in that: A shoulder strap (8) is provided on the top of the standard section (3).

10. The portable support device for replacing grid rods according to claim 1, characterized in that: The outer side surface of the sleeve (5) is arranged to be hexagonal.

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