Stable support for coal mine underground tunneling

Abstract

The utility model relates to the technical field of coal mining, and discloses a stable support for coal mine underground tunneling, which comprises four groups of support fixing mechanisms, each support fixing mechanism comprises a fixing column; the supporting frame comprises two groups of main supports, and the inner threads of the outer surfaces of the two ends of the bottoms of the two groups of main supports are connected to the outer surface of the supporting fixing mechanism. Four supporting and fixing mechanisms are placed in holes and hammered tightly, then the two ends of a main support are placed on upper threaded columns, hexagonal openings are rotated to enable the upper threaded columns to rotate into the main support, the lower ends of pushing and abutting columns push multiple sets of inserting pieces to be unfolded outwards and fixed in a soil layer, and the supporting and fixing mechanisms are firmly fixed to the ground conveniently; and the structural strength of the equipment is improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mining technical field, concretely is a kind of stable support for coal mine underground excavation. BACKGROUND

[0002] In coal mine underground excavation, stable support is important measure to ensure mine safety and operating efficiency, anchor rod is used to fix rock stratum, to improve the stability of mine, anchor rod is usually made of steel, after drilling, cementing material is injected, to enhance the adhesion with surrounding rock, install steel support frame, to form a stable structure, these frames can withstand the pressure of rock stratum, prevent collapse.

[0003] At present, the stable support for coal mine underground excavation is not stable enough, in actual use process, the ground at the bottom of coal mine can be relatively loose, it is inconvenient to fix the bottom of stable support, to a certain extent, the structural strength of equipment is reduced, and the stable support for coal mine underground excavation is mostly single-layer platform, in use process, the working platform space of worker can be relatively limited, it is not conducive to worker to carry out coal mining operation, to a certain extent, the usability of equipment is affected. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned defects of prior art, the utility model provides a stable support for coal mine underground excavation, to solve the problems in the above background art.

[0005] The utility model provides the following technical scheme: a stable support for coal mine underground excavation, comprising:

[0006] Support fixing mechanism, the support fixing mechanism includes fixed column, and the support fixing mechanism is equipped with four groups;

[0007] Support frame, the support frame includes main support, and the main support is equipped with two groups, and the internal threads of the outer surfaces of the two ends of the bottom of the two groups main supports are connected to the outer surfaces of the support fixing mechanism.

[0008] Preferably, the support fixing mechanism further includes plug-in slot, and the plug-in slot is arranged in the internal of the outer surface of fixed column, and the plug-in slot is equipped with multiple groups, the plug-in piece can be extended and retracted in the internal of plug-in slot, and the limiting block is arranged on the plug-in piece.

[0009] Preferably, the plug-in slot is internally provided with a plug-in piece, and the external surface of the upper end of the fixed column is internally threadedly connected with a lower threaded column, and the external surface of the bottom of the lower threaded column is fixedly connected with a pushing column, by rotating the lower threaded column, the pushing column is moved downward to drive multiple plug-in pieces to expand outward and be fixed in the soil layer.

[0010] Preferably, the outer surface of the lower threaded column top is fixedly connected with a hexagonal port, and the outer surface of the upper end of the hexagonal port is fixedly connected with an upper threaded column, and the outer surface of the upper end of the upper threaded column is threadedly connected to the inside of the outer surface of the bottom of the main support, and the thread directions of the outer surfaces of the lower threaded column and the upper threaded column are opposite, and when the hexagonal port is rotated downward, the upper threaded column will be rotated into the inside of the main support.

[0011] Preferably, the support frame further comprises a threaded hole, and the threaded hole is arranged in the inside of the outer surface of one side of the main support, and the main support is provided with multiple groups, and the structure of the main support is reinforced.

[0012] Preferably, the inside of the main support is threadedly connected with a fixing bolt, and the outer surface of one end of the fixing bolt is threadedly connected with a workboard, and the workboard is provided with four groups, and the outer surfaces of the two ends of the workboard are respectively attached to the outer surfaces of the other sides of the two groups of main supports, and the workboard can be fixed on the outer surfaces of the main supports through the fixing bolt.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] 1. In the actual use process, the four groups of support fixing mechanisms are placed in the holes and hammered tightly, then the two ends of the main support are placed on the upper threaded column, the upper threaded column is rotated into the inside of the main support through the rotation of the hexagonal port, the multiple groups of inserted sheets are expanded outward by the pushing end of the column, and are fixed in the soil layer, so that the support fixing mechanism is firmly fixed underground, and the structural strength of the equipment is improved to a certain extent.

[0015] 2. In the use process, after the main support is fixed, the four groups of workboards are fixed on the two groups of main supports through the multiple groups of fixing bolts, so that the equipment is installed, the workboards on the upper and lower layers can be used as work platforms, the work platform space of the workers is improved, the workers can carry out coal mining operation, and the usability of the equipment is improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0017] Figure 2 It is an explosion schematic view of the three-dimensional structure of the utility model.

[0018] Figure 3 It is a three-dimensional structure sectional view of the support fixing mechanism of the utility model.

[0019] Figure 4 It is a three-dimensional structure sectional view of the support fixing mechanism of the utility model.

[0020] Figure 5The utility model discloses a supporting frame's three-dimensional structure explosion schematic view.

[0021] The fixed column 11 is provided with the insertion groove 12, and the insertion groove 12 is arranged in the inner part of the outer surface of the fixed column 11; the insertion piece 13 is arranged in the insertion groove 12; the outer surface of the upper end of the fixed column 11 is threadedly connected with the lower threaded column 14; the outer surface of the bottom of the lower threaded column 14 is fixedly connected with the push column 15; the outer surface of the top of the lower threaded column 14 is fixedly connected with the hexagonal opening 16; the outer surface of the upper end of the hexagonal opening 16 is fixedly connected with the upper threaded column 17; the outer surface of the upper end of the upper threaded column 17 is threadedly connected in the inner part of the outer surface of the bottom of the main support 21; the push column 15 is pushed downward to expand the plurality of insertion pieces 13 outward and fix them in the soil layer by rotating the lower threaded column 14; the threaded direction of the outer surfaces of the lower threaded column 14 and the upper threaded column 17 is opposite; when the hexagonal opening 16 is rotated and moved downward, the upper threaded column 17 is rotated into the inner part of the main support 21. DETAILED DESCRIPTION

[0022] The utility model discloses a supporting frame's three-dimensional structure explosion schematic view.

[0023] Embodiment one

[0024] As shown in Figures 1 to 4 The utility model discloses a kind of stable support for coal mine underground excavation, including support fixed mechanism 1, support fixed mechanism 1 includes fixed column 11, and support fixed mechanism 1 is equipped with four groups, support fixed mechanism 1 further includes insertion groove 12, and insertion groove 12 is opened in the inner part of the outer surface of fixed column 11, and insertion groove 12 is equipped with multiple groups, insertion piece 13 can be in the inner part of insertion groove 12 back and forth stretch, and limit block is set on insertion piece 13;

[0025] Insertion piece 13 is inserted in the inner part of insertion groove 12, and the outer surface of the upper end of fixed column 11 is threadedly connected with lower threaded column 14, and the outer surface of the bottom of lower threaded column 14 is fixedly connected with push column 15, the outer surface of the top of lower threaded column 14 is fixedly connected with hexagonal opening 16, and the outer surface of the upper end of hexagonal opening 16 is fixedly connected with upper threaded column 17, and the outer surface of the upper end of upper threaded column 17 is threadedly connected in the inner part of the outer surface of the bottom of main support 21, push column 15 is moved down to push multiple insertion pieces 13 to expand outward and be fixed in soil layer by rotating lower threaded column 14, the threaded direction of the outer surfaces of lower threaded column 14 and upper threaded column 17 is opposite, when rotating hexagonal opening 16 and moving downward, upper threaded column 17 will rotate into the inner part of main support 21.

[0026] Embodiment two

[0027] As shown in Figure 1 And Figure 5 The utility model discloses a kind of stable support for coal mine underground excavation, including support fixed mechanism 1, support fixed mechanism 1 includes fixed column 11, and support fixed mechanism 1 is equipped with four groups, support fixed mechanism 1 further includes insertion groove 12, and insertion groove 12 is opened in the inner part of the outer surface of fixed column 11, and insertion groove 12 is equipped with multiple groups, insertion piece 13 can be in the inner part of insertion groove 12 back and forth stretch, and limit block is set on insertion piece 13;

[0028] Support frame 2, support frame 2 includes main support 21, and main support 21 is provided with two groups, and the inner thread of the outer surface of the two ends of the bottom of the two groups of main support 21 is connected to the outer surface of the support fixing mechanism 1, the support frame 2 further includes threaded hole 22, and the threaded hole 22 is arranged in the inner surface of the outer surface of one side of the main support 21, and the main support 21 is provided with a plurality of groups, and the structure of the main support 21 is reinforced;

[0029] The inner thread of the main support 21 is connected with the fixed bolt 23, and the outer surface of one end of the fixed bolt 23 is connected with the operation plate 24, and the operation plate 24 is provided with four groups, and the outer surfaces of the two ends of the operation plate 24 are respectively attached to the outer surfaces of the other sides of the two groups of main support 21, and the operation plate 24 can be fixed on the outer surface of the main support 21 by the fixed bolt 23, and the worker can operate on the operation plate 24.

[0030] Working principle: first, drill a predetermined hole at the bottom of the coal mine, put four groups of support fixing mechanism 1 into the hole and hammer tightly, place the two ends of the main support 21 on the upper threaded column 17, rotate the hexagonal port 16 to make the upper threaded column 17 rotate into the inner part of the main support 21, push the lower end of the push column 15 to push the plurality of inserted sheets 13 to expand outwardly, and fix them in the soil layer, then fix the main support 21, fix the four groups of operation plate 24 on the two groups of main support 21 by the plurality of fixed bolts 23, and the equipment can be installed and operated, and the above is the whole working principle of the utility model.

[0031] Finally, the following points should be noted: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0032] Secondly: the utility model discloses the embodiment of the drawings, only relates to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0033] Finally: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A stable support for underground coal mining, characterized in that, Include: Support fixed mechanism (1), the support fixed mechanism (1) includes fixed column (11), and support fixed mechanism (1) is equipped with four groups; Support frame (2), the support frame (2) includes main support (21), and main support (21) is equipped with two groups, and the inner thread of the outer surface of the bottom of two groups main support (21) is connected on the outer surface of support fixed mechanism (1).

2. The stable support for underground tunneling of coal mines according to claim 1, characterized in that: The support fixed mechanism (1) further includes the plug-in groove (12), and the plug-in groove (12) is opened in the inner of the outer surface of fixed column (11), and the plug-in groove (12) is equipped with multiple groups.

3. The stable support for underground tunneling of coal mines according to claim 2, characterized in that: The inside of the plug-in groove (12) is inserted with the plug-in sheet (13), and the outer surface of the upper end of fixed column (11) is threadedly connected with lower threaded column (14), and the outer surface of the bottom of lower threaded column (14) is fixedly connected with push column (15).

4. The stable support for underground tunneling of coal mines according to claim 3, characterized in that: The outer surface of the top of lower threaded column (14) is fixedly connected with hexagonal mouth (16), and the outer surface of the upper end of hexagonal mouth (16) is fixedly connected with upper threaded column (17), and the outer surface of the upper end of upper threaded column (17) is threadedly connected in the inner of the outer surface of the bottom of main support (21).

5. The stable support for underground tunneling of coal mines according to claim 1, wherein: The support frame (2) further includes threaded hole (22), and the threaded hole (22) is opened in the inner of the outer surface of one side of main support (21), and main support (21) is equipped with multiple groups.

6. A stable support for use in underground coal mining according to claim 5 wherein: The inner of main support (21) is threadedly connected with fixed bolt (23), and the outer surface of one end of fixed bolt (23) is threadedly connected with operation board (24), and operation board (24) is equipped with four groups, and the outer surface of the both ends of operation board (24) is respectively adhered on the outer surface of the other side of two groups main support (21).

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