Combined yielding steel belt

Abstract

The utility model discloses a combined yielding steel belt which comprises a steel belt body, the steel belt body is machined to be in a wave shape, the two ends of the steel belt body are connected with a first connecting pair and a second connecting pair respectively, a tray is arranged at the upper end of the steel belt body, the lower end face of the tray is machined to be in an arc shape, and the arc face of the tray is in lap joint with wave troughs of the steel belt body. An anchor rod hole is machined in the upper end of the tray. The utility model has the beneficial effects that the steel belt is arranged to be wave-shaped, so that the downward pressing force can be transferred downwards and outwards to the adjacent part when the cambered surface is stressed, the bearing pressure of the steel belt is increased, and the tray is processed to be arc-shaped and is in lap joint with the wave trough of the steel belt, so that the pressure applied by the steel belt can be relieved when the tray is used for supporting the steel belt.

Description

Technical Field

[0001] The utility model relates to the field of mine tunnel support, and more specifically, to a combined yielding steel strip. Background Art

[0002] The yielding steel strip is mainly used for mine tunnel support and is the source of active and early support. Through the cooperation of bolts and the yielding steel strip, it plays a role in jointly supporting the surrounding rock. The yielding bolt support system gives full play to the self-bearing capacity of the surrounding rock and effectively improves the support quality of the surrounding rock.

[0003] When installing mine tunnel support, there is no mutual connection between the yielding steel strips, and each support exists independently. As a result, the bearing stresses of adjacent mine tunnel supports are different during use, shortening the service life of individual mine tunnel supports with larger bearing pressures and increasing the probability of mine tunnel collapse.

[0004] In response to the problems in the related art, no effective solutions have been proposed yet. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a combined yielding steel strip to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A combined yielding steel strip includes a steel strip. The steel strip is processed into a wavy shape. The two ends of the steel strip are respectively connected with a first connection pair and a second connection pair. A tray is arranged at the upper end of the steel strip. The lower end face of the tray is processed into an arc shape. The arc surface of the tray overlaps with the wave trough of the steel strip. An anchor bolt hole is processed at the upper end of the tray.

[0008] Further, the first connection pair includes a first convex plate and a first pin slot. One end of the steel strip is fixedly connected with the first convex plate. A groove is opened on one side of the first convex plate. First pin slots are opened on both sides of the groove.

[0009] Further, the second connection pair includes a second convex plate, an insertion block and a second pin slot. The other end of the steel strip is fixedly connected with the second convex plate. An insertion block is fixedly connected to one side of the second convex plate. A second pin slot is opened on one side of the insertion block.

[0010] Further, the insertion block and the groove are of the same size, and the first pin slot and the second pin slot have the same diameter.

[0011] Further, a circular groove is opened at the upper end of the anchor bolt hole for placing the gasket for anchor bolt installation.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) By setting the steel strip in a wavy shape, when the arc surface is under pressure, the downward pressure can be transmitted downward and outward to adjacent parts, increasing the pressure-bearing capacity of the steel strip. The tray is processed into an arc shape and overlaps with the wave trough of the steel strip. When the tray supports the steel strip, the pressure exerted by the steel strip can be relieved. The first connecting pair and the second connecting pair are provided to connect the head and tail of the steel strip in sequence. When the steel strip is used for support, the pressure received is shared, avoiding collapse caused by excessive pressure on individual mine tunnel supports. Moreover, the first connecting pair and the second connecting pair can be disassembled and assembled flexibly. The design of the insertion block and the groove makes it more convenient to overlap and match two adjacent yielding steel strips during installation.

[0014] (2) By making the sizes of the groove and the insertion block the same, two adjacent yielding steel strips can overlap with each other. And the diameters of the first pin slot and the second pin slot are the same. When the insertion block overlaps with the groove, they can be connected by inserting a pin column, enabling the mine tunnel supports to share pressure with each other. The provided convex plate one and convex plate two can connect two adjacent yielding steel strips with each other without affecting the stress structure of the yielding steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 FIG. 1 is a schematic structural diagram of a combined yielding steel strip according to an embodiment of the present invention;

[0017] Figure 2 FIG. 2 is another angle of a combined yielding steel strip according to an embodiment of the present invention.

[0018] REFERENCE NUMERALS:

[0019] 1. Steel strip; 2. First connecting pair; 3. Second connecting pair; 4. Tray; 5. Anchor hole; 6. Convex plate one; 7. First pin slot; 8. Groove; 9. Convex plate two; 10. Insertion block; 11. Second pin slot; 12. Round slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further describe the invention in combination with the drawings and specific embodiments:

[0021] Embodiment 1:

[0022] Please refer to Figure 1-2, A combined yielding steel strip according to an embodiment of the present utility model includes a steel strip 1. The steel strip 1 is processed into a wavy shape. First connecting pairs 2 and second connecting pairs 3 are respectively connected to both ends of the steel strip 1. A tray 4 is arranged above the steel strip 1. The lower end surface of the tray 4 is processed into an arc shape. The arc surface of the tray 4 overlaps with the trough of the steel strip 1. An anchor hole 5 is processed on the upper end of the tray 4.

[0023] Through the above solution of the present utility model, by setting the steel strip 1 into a wavy shape, when the arc surface is under pressure, the downward pressure can be transmitted downward and outward to adjacent parts, increasing the pressure-bearing capacity of the steel strip 1. And by processing the tray 4 into an arc shape and overlapping it with the trough of the steel strip 1, when the tray 4 supports the steel strip 1, the pressure exerted by the steel strip 1 can be relieved. The first connecting pairs 2 and second connecting pairs 3 provided can connect the head and tail of the steel strip 1 in sequence. When the steel strip 1 is used for support, the pressure received can be shared, avoiding the collapse caused by excessive pressure on individual mine tunnel supports. And the first connecting pairs 2 and second connecting pairs 3 can be disassembled and assembled flexibly. The design of the insertion block 10 and the groove 8 makes it more convenient to overlap and match two adjacent yielding steel strips during installation.

[0024] Embodiment Two:

[0025] Please refer to Figure 1-2 , the first connecting pair 2 includes a first convex plate 6 and a first pin slot 7. One end of the steel strip 1 is fixedly connected with the first convex plate 6. A groove 8 is opened on one side of the first convex plate 6. First pin slots 7 are opened on both sides of the groove 8. The second connecting pair 3 includes a second convex plate 9, an insertion block 10 and a second pin slot 11. The other end of the steel strip 1 is fixedly connected with the second convex plate 9. An insertion block 10 is fixedly connected to one side of the second convex plate 9. A second pin slot 11 is opened on one side of the insertion block 10. The insertion block 10 and the groove 8 are of the same size. The first pin slot 7 and the second pin slot 11 have the same diameter. A round slot 12 is opened at the upper end of the anchor hole 5, and the round slot 12 is used to place the gasket for anchor installation.

[0026] Through the above solution of the present utility model, by making the groove 8 and the insertion block 10 of the same size, two adjacent yielding steel strips can overlap with each other. And since the first pin slot 7 and the second pin slot 11 have the same diameter, when the insertion block 10 overlaps with the groove 8, they can be connected by inserting a pin, enabling the mine tunnel supports to share pressure with each other. The first convex plate 6 and the second convex plate 9 provided can connect two adjacent yielding steel strips with each other without affecting the force-bearing structure of the yielding steel strip.

[0027] For the convenience of understanding the above technical solution of the present utility model, the working principle or operation method of the present utility model in the actual process will be described in detail below.

[0028] In actual application, after laying the mesh, drill holes to install the anchor bolts, and then install the yielding steel strip and place the upper tray. Subsequently, complete the subsequent installation of the anchor bolts and anchor cables. When installing the support for the second mine tunnel, connect the first connecting pair and the second connecting pair of the yielding steel strip, insert the pin column for fixation, and install them sequentially, so that the supports for the mine tunnel can share the pressure with each other.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined yield steel belt, characterized in that: The invention comprises a steel belt (1), wherein the steel belt (1) is processed into a wave shape, wherein the two ends of the steel belt (1) are respectively connected to a first connection pair (2) and a second connection pair (3), wherein a tray (4) is arranged at the upper end of the steel belt (1), wherein the lower end surface of the tray (4) is processed into an arc shape, wherein the arc surface of the tray (4) overlaps with the trough of the steel belt (1), and wherein an anchor hole (5) is processed at the upper end of the tray (4).

2. A combined pressure-yielding steel belt according to claim 1, characterized in that: The first connection pair (2) comprises a convex plate (6) and a first pin groove (7); one end of the steel belt (1) is fixedly connected to the convex plate (6); a groove (8) is provided on one side of the convex plate (6); and the first pin grooves (7) are provided on both sides of the groove (8).

3. The combined pressure-yielding steel belt according to claim 2, characterized in that: The second connection pair (3) comprises a second convex plate (9), an insert block (10) and a second pin groove (11); the other end of the steel belt (1) is fixedly connected to the second convex plate (9); one side of the second convex plate (9) is fixedly connected to the insert block (10); and one side of the insert block (10) is provided with a second pin groove (11).

4. The combined pressure-yielding steel belt according to claim 3, characterized in that: The insert block (10) and the groove (8) have the same size, and the first pin groove (7) and the second pin groove (11) have the same diameter.

5. The combined yield steel belt according to claim 1, characterized in that: A circular groove (12) is provided at the upper end of the anchor rod hole (5), and the circular groove (12) is used to place a gasket for installing the anchor rod.

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