Low-magnetic-resistance steel bar net rack structure suitable for ultra-high-speed low-vacuum magnetic levitation pipeline

Abstract

The invention provides a low magnetic resistance steel bar net rack structure suitable for an ultra-high-speed low-vacuum magnetic levitation pipeline, the net rack structure comprises an insulation net rack assembly, a plurality of transverse steel bars and a plurality of longitudinal steel bars, the insulation net rack assembly is manufactured by machining and is made of non-metallic materials, the material for blanking is bar materials, and the transverse steel bars and the longitudinal steel bars are arranged on the insulation net rack assembly. The insulation net rack assembly is composed of a plurality of rod-shaped pieces, a plurality of transverse installation holes and a plurality of longitudinal installation holes are machined in any rod-shaped piece, hole characteristics are completed on a milling machine, the two ends of the transverse steel bars are installed in the transverse installation holes of the two rod-shaped pieces which are transversely arranged at intervals respectively, and the longitudinal installation holes are formed in the rod-shaped pieces. The two ends of the longitudinal reinforcing steel bars are installed in the two longitudinal installation holes which are longitudinally formed in a spaced mode respectively. The magnetic resistance can be eliminated from the source, the stability of insulation lap joint is higher, and the cost is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge design, and in particular relates to a low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum maglev pipelines, and specifically to a steel bar arrangement scheme for reducing the magnetic resistance generated by pipeline steel bars during the travel of high-speed maglev trains. Background Art

[0002] At present, low magnetic resistance design solutions are mainly used in many core high-tech industries such as rail transit systems, maglev transportation systems, aerospace fields, etc., and are also used in some high-tech research and development industries, such as ultra-high-speed low-vacuum pipeline maglev transportation systems. As far as the current situation is concerned, one of the core technologies that restrict the rapid advancement of high-speed flying cars is the problem of excessive magnetic resistance. Excessive magnetic resistance will directly increase the load of the train during operation, thereby reducing the efficiency of the train during operation, and the speed will never increase. The direct cause of excessive magnetic resistance is that the steel mesh in the magnetic field environment generates eddy currents, so that most of the magnetic field energy is converted into heat energy of the steel mesh. Related research and engineering practice show that the current traditional solutions to weaken magnetic resistance are all the same, all using the method of replacing low-magnetic resistance steel materials, but this method is expensive, construction progress is slow, and it will affect the strength and precision of concrete beams, and the cost performance is very low. For example, the patent "A superconducting magnetic levitation track structure capable of reducing magnetic resistance" (CN115162071B) discloses a superconducting magnetic levitation track structure capable of reducing magnetic resistance. The base, running beam and guide rail described in the invention are all made of non-magnetic or low-magnetic materials, which can isolate magnetic resistance and thus reduce energy consumption; however, the track beams described in the device scheme are all made of non-magnetic and low-magnetic materials, resulting in insufficient overall strength and deformation, and are prone to vibration before the train retracts its wheels; the cost of this scheme is also very high.

[0003] Therefore, based on the technical problems existing in the above-mentioned prior art, it is urgently necessary to provide a steel bar arrangement scheme that can reduce the magnetic resistance generated by pipeline steel bars during the travel of high-speed maglev trains. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the prior art.

[0005] To this end, the present invention provides a low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum maglev pipelines.

[0006] The technical solution of the present invention is:

[0007] According to one aspect, a low magnetic resistance steel grid structure suitable for an ultra-high-speed low-vacuum maglev pipeline is provided, wherein the grid structure comprises an insulating grid assembly, a plurality of transverse steel bars and a plurality of longitudinal steel bars, the insulating grid assembly is manufactured by machining, the material selected is non-metallic material, and the material selected for cutting is bar stock, the insulating grid assembly is composed of a plurality of rod-shaped members, any of the rod-shaped members is machined with a plurality of transverse mounting holes and a plurality of longitudinal mounting holes, wherein the hole features are completed on a milling machine, the two ends of the transverse steel bar are respectively installed in the transverse mounting holes of two rod-shaped members arranged at a transverse interval, and the two ends of the longitudinal steel bar are respectively installed in the two longitudinal mounting holes arranged at a longitudinal interval.

[0008] Furthermore, the insulating grid assembly includes multiple groups of rod-shaped member assemblies, which are arranged at intervals along the transverse direction, and any rod-shaped member assembly includes multiple rod-shaped members, which are arranged at intervals along the longitudinal direction, wherein for any group of rod-shaped member assemblies, multiple longitudinal steel bars are arranged between adjacent rod-shaped members, and for any two adjacent groups of rod-shaped member assemblies, multiple transverse steel bars are arranged between adjacent rod-shaped members.

[0009] Furthermore, the non-metallic material is nylon, glass fiber cloth layer or FR4.

[0010] Furthermore, the transverse steel bars and the longitudinal steel bars are both HRB400 threaded steel bars.

[0011] According to another aspect, a concrete pouring unit is provided, which comprises the low magnetic resistance steel grid structure mentioned above.

[0012] Furthermore, the concrete pouring unit is obtained by the following method:

[0013] The formwork is supported outside the steel grid and then concrete is poured to obtain a concrete pouring unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention designs an insulating grid assembly, and the steel bars are not tied together by traditional means, but an insulating grid assembly made of non-metallic materials is used, so that any steel bars are not in contact with each other, so that a closed circuit cannot be formed, thereby eliminating magnetic resistance from the root;

[0016] (2) The raw materials used in the insulating grid assembly of the present invention can be the cheapest glued materials, such as glued rods, which are almost close to zero magnetic resistance, simple to process, stable in performance and easy to obtain, which can greatly save the time and labor costs of making the insulating grid assembly;

[0017] (3) Compared with the traditional method of tying steel bars with tie ties or wires, the steel bar installation method of the insulation grid assembly of the present invention is more stable. Its stability lies in making the steel grid less likely to deform, thereby improving the overall strength and dimensional shape accuracy of the concrete unit after casting, and ultimately making the data of the sports car test more accurate and true;

[0018] (4) Compared with the traditional binding method of cable ties and wires, the present invention uses an insulating grid assembly to install steel bars, which saves more labor costs and time costs. According to practical tests, for the same work with exactly the same intensity, the labor hours required for binding wires are 86 hours, the labor hours required for binding with cable ties are 70 hours, and the labor hours required for the insulating grid assembly method are 16 hours. From the above data, it can be seen that the steel bar fixing method using the steel bar grid assembly saves several times the time cost of labor hours compared with the traditional binding method;

[0019] (5) The present invention adopts the most common HRB400 threaded steel bars, which have a wide range of raw materials and are available on the market, thus greatly saving the cost of steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of an insulation grid assembly according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a steel mesh frame according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of a concrete pouring unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in 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.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] like Figure 1-3 As shown, in one embodiment of the present invention, according to one aspect, a low magnetic resistance steel grid structure suitable for an ultra-high-speed low-vacuum maglev pipeline is provided, wherein the grid structure includes an insulating grid assembly 101, a plurality of transverse steel bars 102 and a plurality of longitudinal steel bars 103, the insulating grid assembly 101 is manufactured by machining, the material selected is non-metallic material, and the material selected for cutting is bar stock, the insulating grid assembly 101 is composed of a plurality of rod-shaped members, any of the rod-shaped members is processed with a plurality of transverse mounting holes and a plurality of longitudinal mounting holes, wherein the hole features are completed on a milling machine, the two ends of the transverse steel bar 102 are respectively installed in the transverse mounting holes of two rod-shaped members arranged at a transverse interval, and the two ends of the longitudinal steel bar 103 are respectively installed in the two longitudinal mounting holes arranged at a longitudinal interval.

[0028] Specifically, if Figure 2 As shown, the insulating grid assembly 101 includes a plurality of rod-shaped member assemblies, and the plurality of rod-shaped member assemblies are arranged at intervals along the transverse direction. Any rod-shaped member assembly includes a plurality of rod-shaped members, and the plurality of rod-shaped members are arranged at intervals along the longitudinal direction. For any group of rod-shaped member assemblies, a plurality of longitudinal steel bars 103 are arranged between adjacent rod-shaped members, and for any two adjacent groups of rod-shaped member assemblies, a plurality of transverse steel bars 102 are arranged between adjacent rod-shaped members.

[0029] That is, the embodiment of the present invention first completes the machining of the insulating grid assembly 101 components, and can use high-strength and stable non-metallic materials such as nylon, glass fiber cloth, FR4, etc., and can even use the lowest-cost adhesive material as the raw material, and the material is selected as a bar, and the hole features are completed on the milling machine. Then, the insulating grid assembly 101, the transverse steel bars 102, and the longitudinal steel bars 103 are used to complete the production of the steel grid. The production process is relatively simple. Workers only need to insert the purchased transverse steel bars 102 and longitudinal steel bars 103 into the hole features of the insulating grid assembly 101 respectively to realize the production of the steel grid. In the produced steel grid, the steel bars and the steel support are not in contact, so no closed loop is generated as a whole. Even under the condition of a strong magnetic field, a high level of magnetic resistance will still not be generated, thereby reducing the energy consumption under the train running condition.

[0030] In the embodiment of the present invention, the transverse steel bars 102 and the longitudinal steel bars 103 are both HRB400 threaded steel bars.

[0031] That is, in the present invention, all kinds of raw materials, profiles, etc. used are shelf products on the market and can be purchased directly. The implementation of this solution is simple to operate, highly reliable, and has a high fault tolerance rate, and requires low technical level of workers. While fundamentally solving the problem of high magnetic resistance, it can also greatly save the cost of raw materials and labor costs. Compared with the traditional magnetic resistance reduction solution, it further shortens the construction period.

[0032] It can be seen that compared with the prior art, the embodiments of the present invention have at least the following advantages: (1) The present invention designs an insulating grid assembly, and the steel bars are not tied together by traditional means, but an insulating grid assembly made of non-metallic materials is used, so that any steel bars can be prevented from contacting each other, thereby making it impossible to form a closed loop, thereby eliminating magnetic resistance from the root; (2) The raw materials used for the insulating grid assembly of the present invention can be the cheapest adhesive material, such as adhesive rods, which are almost close to zero magnetic resistance, simple to process, stable in performance and easy to obtain, which can greatly save the time and labor costs of making the insulating grid assembly; (3) Compared with the traditional method of tying the steel bars with cable ties or wires, the steel bar installation method of the insulating grid assembly of the present invention is more stable. Its stability lies in making the steel bars The reinforcement grid is less likely to deform, thereby improving the overall strength and dimensional accuracy of the concrete unit after casting, and ultimately making the data of the sports car test more accurate and true; (4) The present invention uses an insulating grid assembly to install steel bars, which saves more labor and time costs than the traditional cable tie and wire binding methods. According to practical tests, for the same work with exactly the same intensity, the labor hours required for wire binding are 86 hours, the labor hours required for cable tie binding are 70 hours, and the labor hours required for insulating grid assembly are 16 hours. From the above data, it can be seen that the steel bar fixing method using the steel grid assembly saves several times the time cost of labor hours compared with the traditional binding method; (5) The present invention uses the most common HRB400 threaded steel bars, which have a wide range of raw materials and are available on the market, which can greatly save the cost of steel bars.

[0033] According to another embodiment, a concrete pouring unit 20 is provided, which includes the low magnetic resistance steel grid structure described above.

[0034] The concrete pouring unit 20 is obtained by the following method: supporting the formwork 10 outside the steel grid and then pouring concrete to obtain the concrete pouring unit 20 .

[0035] Since the steel grid obtained by using the insulating grid assembly in the embodiment of the present invention is stable, the outer surface dimensional accuracy and strength of the grid wrapped with concrete will be better than those obtained by the traditional steel grid tied with cable ties and wires. As a result, the test parameters obtained before the train rolling test and during the entire test process are more real and effective, thereby promoting the smooth progress of scientific research work.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum magnetic levitation pipeline, characterized in that: The grid structure includes an insulating grid assembly, a plurality of transverse steel bars and a plurality of longitudinal steel bars. The insulating grid assembly is manufactured by machining, and non-metallic materials are selected as materials, and rods are selected as cutting materials. The insulating grid assembly is composed of a plurality of rod-shaped members, and any of the rod-shaped members is processed with a plurality of transverse mounting holes and a plurality of longitudinal mounting holes, wherein the hole features are completed on a milling machine, and the two ends of the transverse steel bars are respectively installed in the transverse mounting holes of two rod-shaped members arranged at a transverse interval, and the two ends of the longitudinal steel bars are respectively installed in the two longitudinal mounting holes arranged at a longitudinal interval.

2. A low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum maglev pipeline according to claim 1, characterized in that: The insulating grid assembly includes multiple groups of rod-shaped member assemblies, which are arranged at intervals along the transverse direction. Any rod-shaped member assembly includes multiple rod-shaped members, which are arranged at intervals along the longitudinal direction. For any group of rod-shaped member assemblies, multiple longitudinal steel bars are arranged between adjacent rod-shaped members, and for any two adjacent groups of rod-shaped member assemblies, multiple transverse steel bars are arranged between adjacent rod-shaped members.

3. A low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum maglev pipeline according to claim 1 or 2, characterized in that: The non-metallic material is nylon, glass cloth layer or FR4.

4. A low magnetic resistance steel grid structure suitable for ultra-high-speed low-vacuum maglev pipeline according to claim 1 or 2, characterized in that: The transverse steel bars and longitudinal steel bars are both HRB400 threaded steel bars.

5. A concrete pouring unit, characterized in that: It comprises the low magnetic resistance steel bar grid structure as described in claims 1-4.

6. A concrete pouring unit according to claim 5, characterized in that: The concrete pouring unit is obtained by the following method: The formwork is supported outside the steel grid and then concrete is poured to obtain a concrete pouring unit.

Images