Inclined support for underground corridors

Abstract

The present invention discloses a diagonal support type underground corridor support. A fixing seat is fixedly installed on the inner wall of the corridor by an expansion wire. The outer wall of the fixing seat is fixedly connected to a diagonal support rod inclined upward, and vertical blocking rods are fixed at intervals on the upper side of the diagonal support rod. Each vertical blocking rod forms an acute angle with the diagonal support rod on one side of it. The acute angle area serves as a clamping support portion for supporting the pipeline. The present invention utilizes the pipeline's own weight to slide downward along the diagonal support rod and be stopped by the vertical blocking rod. An acute-angle clamping portion is formed between the vertical blocking rod and the diagonal support rod. After the pipeline is supported at this clamping portion, it is no longer necessary to use a fixing fastener to fix the pipeline. This simplifies the installation steps, is more convenient for pipeline maintenance and replacement, and improves the efficiency of loading and unloading pipelines.

Description

Technical Field

[0001] The present invention belongs to the technology of supporting structures for cables or pipelines in underground corridors, and in particular relates to an underground corridor bracket installation structure for obliquely supporting cables or pipelines. Background Art

[0002] When designing large-span corridor supports, a reasonable structural form should be adopted. Corridor supports are very common. In recent years, steel structures have been widely used in corridor supports, and reinforced concrete supports have been used less and less. In practical applications, hinged supports and fixed supports are commonly used. Fixed supports are more commonly used. For owners, there are many advantages to using corridor steel support structures. For example, the construction speed is fast, which can shorten the construction period. The steel support rods mainly bear tension or pressure, and the materials can fully play their role, which can save materials. Moreover, the supports can be recycled after dismantling, and the price is considerable. The existing cable fixing bracket structure is simple, and a flat support rod is used to support multiple parallel cables in a cantilever form. During use, the cables are directly placed on the cable bracket without an effective fixing device, which makes the cables easy to fall off and fail to achieve effective support. Alternatively, the cables are fixed with fixing fasteners. Figure 2 As shown, although the cables can be effectively fixed on the cable brackets to prevent them from slipping, due to the large number of brackets, many brackets are arranged vertically and horizontally in the underground corridor, which makes the operation very troublesome, and the efficiency of installation and disassembly maintenance workers is very low, which increases the cost of additional components and labor costs, and increases the total weight of the brackets. At present, there are still traditional processes and brackets used in the laying of underground cable pipelines, which are often inconvenient to use. For example, the position cannot be adjusted, which wastes corridor space, is inconvenient to install, is inefficient, and wastes manpower, material resources, and time. There are many areas that need improvement. Moreover, after the cables or pipelines are installed, the outer cables or pipelines are blocked, and the inner layer is too deep to enter, which makes the operation of the inner fasteners very troublesome. The existing underground corridor fixed brackets use cantilever form to support the cables or pipelines. The flat support rods are subjected to a large torsional force. After acting on the fixed seat, the stress at the connection point is concentrated, so it is required to increase the investment in the strength of the brackets, which further increases the cost of components. Summary of the Invention

[0003] In response to the defects and problems that still exist in the current fixed brackets for corridors, the present invention provides a diagonal braced underground corridor bracket, which is used to simplify the bracket structure, facilitate installation and maintenance, reduce manpower and material costs, and improve the bracket force structure to achieve the purpose of reducing bracket consumables.

[0004] The solution adopted by the present invention to solve its technical problems is: a diagonal support type underground corridor support, a fixing seat is fixedly installed on the inner wall of the corridor by an expansion wire, the outer wall of the fixing seat is fixedly connected with a diagonal support rod inclined upward, and vertical blocking rods are fixed at intervals on the upper side of the diagonal support rod, each vertical blocking rod forms an acute angle with the diagonal support rod on one side of it, and the acute angle area serves as a clamping support part for supporting the pipeline.

[0005] Among them, the lower end of the vertical barrier rod is welded to the upper side of the diagonal support rod, or the vertical barrier rod is hinged to the side of the diagonal support rod or the groove in the middle of the diagonal support rod through a pin shaft. At the same time, a limiting pin shaft is fixed on the diagonal support rod at the lower side of the vertical barrier rod to constrain the vertical barrier rod to be in a vertical direction and prevent the vertical barrier rod from excessively flipping.

[0006] Furthermore, a main hinge seat and an auxiliary hinge seat are respectively provided on the upper and lower sides of the fixed seat, the lower end of the diagonal support rod is hinged to the main hinge seat through a second pin, and a middle hinge seat is provided below the middle part of the diagonal support rod, a support rod 1 is hinged in the auxiliary hinge seat through a third pin, and a support rod 2 is hinged in the middle hinge seat through a fourth pin, and adjustment holes are distributed on the support rod 1 and the support rod 2, and a pair of adjustment holes on the support rod 1 and the support rod 2 are fixed by a locking pin.

[0007] The present invention has the following advantages: 1. The present invention utilizes the pipe's own weight to slide downward along the diagonal support rods and is stopped by the vertical blocking rods. An acute-angled clamping portion is formed between the vertical blocking rods and the diagonal support rods. Once the pipe is supported at this clamping portion, no fasteners are required to secure the pipe. This simplifies installation, makes pipe maintenance and replacement more convenient, and improves pipe loading and unloading efficiency.

[0008] 2. The present invention adopts the diagonal support rod, and the total weight of each pipe and the diagonal support rod is decomposed into a part of the torsion force on the fixed seat and a part of the downward pressure on the fixed seat. That is, the fixed seat has to overcome part of the torsion force F 扭 And the top force G' that partially prevents sliding, the effect of the top force G' can be ignored, which reduces the torsion on the fixed seat and shortens the equivalent effective arm of the diagonal brace. Under the condition of equal supporting strength, the steel consumption of the base and the diagonal brace can be reduced.

[0009] 3. The present invention can realize the expansion and folding functions by improving the vertical rod, making the pipe installation process simple.

[0010] 4. The solution of the present invention also aims to achieve optimal angle adjustment according to needs and fully and reasonably utilize the internal space of the corridor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the bracket of the present invention installed in the corridor.

[0012] Figure 2It is a schematic diagram of the existing bracket installation structure in the corridor.

[0013] Figure 3 It is a schematic diagram comparing the force analysis of the present invention and the existing bracket.

[0014] Figure 4 This is one of the three-dimensional structural diagrams of the bracket of the present invention.

[0015] Figure 5 This is the second schematic diagram of the three-dimensional structure of the bracket of the present invention.

[0016] Figure 6 This is the third schematic diagram of the three-dimensional structure of the bracket of the present invention.

[0017] The numbers in the figure are: 1 is the corridor, 2 is the fixed seat, 3 is the diagonal support rod, 4 is the vertical blocking rod, 5 is the hidden groove, 6 is the flip pin, 7 is the limit pin, 8 is the main hinge seat, 9 is the auxiliary hinge seat, 10 is the middle hinge seat, 11 is the support rod one, 12 is the support rod two, 13 is the adjustment hole, 14 is the locking pin, 15 is the pipe, 16 is the flat support rod, and 17 is the fixing fastener. DETAILED DESCRIPTION

[0018] Example 1: A Figure 1 The inclined support type underground corridor support shown in the figure has multiple fixing seats 2 at different upper and lower positions fixedly installed on the same vertical surface area of ​​the inner wall of the corridor 1 by expansion wires. A series of fixing seats 2 are fixed at intervals along the length of the corridor. The outer wall of each fixing seat 2 is fixedly connected to an inclined upward inclined support rod 3, and vertical blocking rods 4 are fixed at intervals on the inclined support rod 3. Figure 4 As shown, each vertical blocking rod 4 and the diagonal bracing rod 3 on its upper side form a clamping support portion for supporting the pipeline. In the present embodiment, the lower end of the vertical blocking rod 4 is welded and fixed on the diagonal bracing rod 3 upper sides.

[0019] Compared to Figure 2 Compared to the prior art shown, this embodiment utilizes diagonal braces 3 to support the pipeline. This embodiment utilizes the pipeline's own weight to slide downward along the diagonal braces 3 and be stopped by vertical bars 4. An acute-angled clamping portion is formed between the vertical bars 4 and the diagonal braces 3. Once the pipeline is supported at this clamping portion, there is no need to secure it with fasteners 17. This simplifies installation, makes pipeline maintenance and replacement more convenient, and improves pipeline loading and unloading efficiency.

[0020] On the other hand, one can Figure 3 The force analysis (a) shown in the figure shows that the existing technology adopts Figure 2When supporting the pipeline structure as shown, the entire flat support rod 16 bears the entire downward gravity of the pipeline. The total gravity used to support the pipeline, the flat support rod 16 and the fixing fastener 17 ultimately acts on the fixing seat 2 as a torsion. The lever arm is long and is a cantilever structure, requiring the flat support rod 16 and the fixing seat 2 to provide a large torsion, especially the connection point between the flat support rod 16 and the fixing seat 2, which bears the largest torsion. Therefore, larger and thicker steel is required for the fixing seat 2 and the flat support rod 16.

[0021] This embodiment adopts Figure 1 After the structure shown, the stress analysis is as follows Figure 3 In (b) and (c), after adopting the diagonal brace 3, the total weight of each pipe and the diagonal brace 3 is decomposed into part of the torsion force on the fixed seat 2 and part of the downward pressure on the fixed seat 2. That is, the fixed seat 2 has to overcome part of the torsion force F 扭 And the top force G' that partially prevents sliding. It can be seen that the top force G' is a vertical force, that is, the sliding force between the fixing base 2 and the wall. After the fixing base 2 is fixed to the wall by the expansion wire, there is basically no need to consider the problem of the fixing base 2 and the wall sliding downward, so the effect of the top force G' can be ignored. It can be seen that the embodiment provided by Figure 1 The pipe support structure shown can reduce the torsion on the fixed seat 2 without reducing the bearing capacity and load. The equivalent effective arm of the diagonal support rod 3 is shortened, which can reduce the steel consumption of the base and the diagonal support rod 3 under the condition of equal support strength.

[0022] Example 2: Based on Example 1, in this example, the vertical barrier rod 4 is hinged to the side or middle groove of the diagonal support rod 3 through the flip pin 6, as shown in FIG. Figure 5 The diagonal brace 3 shown is a channel steel structure, and a hidden groove 5 naturally exists on its upper part. At the same time, a limit pin 7 is fixed on the diagonal brace 3 at the lower side of the vertical barrier rod 4. The purpose of this design is to facilitate installation, that is, when installing the innermost pipe, the outer vertical barrier rods 4 are swung downward to make way, but after the vertical barrier rods 4 are unfolded, they can be supported by the limit pins to form a supporting structure, and are acted upon by the downward pressure of the pipe to form a stable support portion. This solution is simple and convenient to unfold and fold, and the pipe installation process is also simple. When considering this embodiment, the distance between the upper and lower diagonal brace rods 3 can usually be compressed, that is, as shown in FIG. Figure 1 The height difference h shown in the figure is applicable to air or water pipes.

[0023] Example 3: Based on Example 1, a main hinge seat 8 and an auxiliary hinge seat 9 are respectively provided on the upper side and lower layer of the fixed seat 2. The diagonal support rod 3 is hinged to the fixed seat 2 through the main hinge seat through a pin shaft. A middle hinge seat 10 is provided below the middle part of the diagonal support rod 3. A support rod 11 is hinged in the auxiliary hinge seat through a pin shaft. A support rod 2 12 is hinged in the middle hinge seat through a pin shaft. Adjustment holes 13 are distributed on support rod 1 and support rod 2. A pair of adjustment holes on support rod 1 and support rod 2 are fixed by a locking pin 14. The purpose of implementing the above structure is to provide an angle-adjustable diagonal support rod 3 so as to make the best and most reasonable use of the internal space of the corridor 1. Figure 3 From the comparison between (b) and (c), it can be seen that by changing the inclination angle of the diagonal brace 3, different force decomposition characteristics can be achieved. Therefore, this embodiment aims to achieve optimal angle adjustment according to needs and fully and reasonably utilize the internal space of the corridor.

Claims

1. A diagonal support for underground corridors, wherein a fixing seat is fixed on the inner wall of the corridor by expansion wires, characterized in that: The outer wall of the fixed seat is fixedly connected to a diagonal support rod inclined upward, and vertical blocking rods are fixed at intervals on the upper side of the diagonal support rod. Each vertical blocking rod forms an acute angle with the diagonal support rod on one side of it, and the acute angle area serves as a clamping support part for supporting the pipe; the vertical blocking rod is hinged to the side or middle groove of the diagonal support rod through a flip pin. The diagonal support rod is a channel steel structure with a hidden groove on its upper part. At the same time, a limiting pin is fixed on the diagonal support rod at the lower side of the vertical blocking rod. When installing the innermost pipe, the outer vertical blocking rods are swung downward to make way, but after the vertical blocking rod is unfolded, it can be supported by the limiting pin to form a supporting structure, and is acted upon by the downward pressure of the pipe to form a stable support part.

2. The oblique support type underground gallery support according to claim 1, characterized in that: A main hinge seat and an auxiliary hinge seat are respectively provided on the upper and lower sides of the fixed seat. The lower end of the diagonal support rod is hinged to the main hinge seat through a second pin, and a middle hinge seat is provided below the middle part of the diagonal support rod. A support rod 1 is hinged in the auxiliary hinge seat through a third pin, and a support rod 2 is hinged in the middle hinge seat through a fourth pin. Adjustment holes are distributed on the support rod 1 and the support rod 2, and a pair of adjustment holes on the support rod 1 and the support rod 2 are fixed by a locking pin.

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