Mine underground secondary support chiseling fixing device

Abstract

The utility model discloses a mine underground secondary support chiseling fixing device, and belongs to the field of roadway support construction tools. The utility model discloses including fixed ring, locating hole, tie rod and diagonal draw bar, a plurality of tie rod through fixed ring head-to-tail connection in proper order form a closed plane, the central position in the closed plane is provided with locating hole, and the diagonal draw bar is connected between locating hole and fixed ring. The transverse pull rod and the diagonal pull rod form a stable triangular supporting structure, it is ensured that the secondary supporting holes and the primary supporting holes are accurately arranged in a quincunx shape, a handle is arranged on the diagonal pull rod, the safety risk caused by manual fixing of personnel is reduced, the device is easy and convenient to operate, and the drilling positioning precision and the construction efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of underground mine roadway support construction technology, specifically relating to a fixing device for secondary support drill holes in underground mines. Background Technology

[0002] In the mining process, effective support measures must be taken for connecting tunnels with fractured rock to prevent safety accidents caused by deformation, damage, and collapse. Double-layer shotcrete-rock mesh support is a commonly used underground support method and is widely applied. Before implementing shotcrete-rock mesh support in tunnel excavation and repair work, plain shotcrete support is usually used to temporarily stabilize the rock surface. Then, the primary shotcrete-rock mesh support anchor holes are constructed. To facilitate subsequent construction, the primary support anchors need to be clearly marked. After the primary support is completed, the secondary support anchor holes need to be constructed. The secondary shotcrete-rock mesh should be arranged alternately with the primary shotcrete-rock mesh anchors, forming a staggered pattern. Currently, secondary support drilling is often carried out by workers manually fixing the drilling equipment. This method not only carries extremely high safety risks but also results in large positioning errors, seriously affecting the support quality and construction efficiency. Utility Model Content

[0003] This utility model provides a fixing device for secondary support drill holes in underground mines, which aims to solve the problems existing in the above-mentioned background technology.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A fixing device for secondary support drill holes in underground mines, characterized in that it includes a fixing ring, a positioning hole, a horizontal tie rod and an inclined tie rod, wherein multiple horizontal tie rods are connected end to end through the fixing ring to form a closed plane, a positioning hole is provided at the center of the closed plane, and an inclined tie rod is connected between the positioning hole and the fixing ring.

[0006] Furthermore, the horizontal tie rod and the diagonal tie rod form a stable triangular support structure.

[0007] Furthermore, a handle is provided on the diagonal tie rod.

[0008] The beneficial effects of this utility model are: the double limiting of positioning holes and fixing rings ensures the accuracy of the plum blossom-shaped hole pattern; the horizontal tie rod and the diagonal tie rod form a stable triangular support, reducing equipment shaking; there is no need to repeatedly adjust the positioning; and manual fixing of the rock drilling equipment is avoided, thus reducing personnel safety risks. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] In the diagram, 1 is the handle, 2 is the retaining ring, 3 is the positioning hole, 4 is the horizontal tie rod, and 5 is the diagonal tie rod. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0012] like Figure 1 As shown, a secondary support drilling fixing device for underground mines is characterized by comprising a fixing ring 2, a positioning hole 3, a horizontal tie rod 4, and an inclined tie rod 5. Multiple horizontal tie rods 4 are connected end to end through the fixing ring 2 to form a closed plane. A positioning hole 3 is provided at the center of the closed plane, and an inclined tie rod 5 is connected between the positioning hole 3 and the fixing ring 2.

[0013] Specifically, both the horizontal tie rod 4 and the diagonal tie rod 5 are made of 8mm diameter threaded steel welded together. They are connected by a welded fixing ring 2 and a positioning ring 3 to form a stable triangular support structure that can withstand the reaction force of drilling. The diagonal tie rod 5 is equipped with a handle 1, which is made of 12mm diameter threaded steel welded together for easy one-handed stable grip.

[0014] In practical application, the positioning hole 3 is aligned with the primary support mark. The horizontal tie rod 4 is adjusted to ensure the device fits against the rock surface. The rock drill bit is inserted into the positioning hole 3. The fixing ring 2 is used to form a stable triangular structure between the horizontal tie rod 4 and the diagonal tie rod 5, ensuring that the distance between the secondary support holes and the primary support holes is equal, forming a staggered quincunx pattern. The handle 1 is held in place with both hands to secure the device. The rock drilling equipment is started. After drilling, the fixing ring is released, and the device is moved to the next mark point for repeated operation. Through these steps, the device can achieve precise positioning and rapid assembly / disassembly, improving the efficiency and safety of underground secondary support operations.

Claims

1. A fixing device for secondary support drill holes in underground mines, characterized in that, It includes a fixing ring (2), a positioning hole (3), a horizontal tie rod (4) and a diagonal tie rod (5). Multiple horizontal tie rods (4) are connected end to end through the fixing ring (2) to form a closed plane. A positioning hole (3) is provided at the center of the closed plane. Diagonal tie rods (5) are connected between the positioning hole (3) and the fixing ring (2).

2. The fixing device for secondary support drill holes in underground mines according to claim 1, characterized in that, The horizontal tie rod (4) and the diagonal tie rod (5) form a stable triangular support structure.

3. The fixing device for secondary support drill holes in underground mines according to claim 2, characterized in that, A handle (1) is provided on the diagonal tie rod (5).

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