High-strength hard alloy mortise and tenon joint coal mine well supporting component

Abstract

The invention relates to a high-strength hard alloy tenon-and-mortise connection coal mine well supporting member which comprises a top arc-shaped supporting rod, a pair of bottom vertical supporting rods arranged symmetrically and a pair of middle arc-shaped supporting rods, and the supporting rods are connected in sequence. The top arc-shaped supporting rod, the bottom vertical supporting rod and the middle arc-shaped supporting rod are aluminum alloy sections with the same cross section shape. The cross section is I-shaped; strip-shaped grooves are formed in the two ends of the middle arc-shaped supporting rod, and the first connecting piece and the second connecting piece are the same in structure and are rectangular blocks provided with T-shaped grooves; the top arc-shaped supporting rod, the bottom vertical supporting rod and the middle arc-shaped supporting rod are connected in the circumferential direction. The coal mine well supporting member has the following characteristics that the safety performance is high; the supporting structure is simplified; cost is low, efficiency is high, construction comprehensive cost is reduced, and construction efficiency is improved; the materials can be repeatedly utilized; the universality and the interchangeability are high; and mixed support can be formed.

Description

Technical Field

[0001] The invention relates to the technical field of mine support components, and in particular to a coal mine support component connected with high-strength hard alloy mortise and tenon joints. Background Art

[0002] Mine support is a key node in coal mine production and is of great significance for ensuring production safety and improving production efficiency. With the continuous development of global scientific and technological innovation, mine support technology is also constantly improving. By referring to and absorbing the advanced design concepts of mine support technology around the world, combined with the influence of factors such as different service types, different years, different mine pressures and different rock and coal structures of existing mine tunnels and the existing support status, the design requirements of high-strength alloy support are determined.

[0003] In the existing technology, support components are mostly made of stainless steel profiles welded, and their safety performance can meet the requirements, but the structure is complex, the materials are not reusable, and the versatility and interchangeability are poor. The complex structure will reduce the work efficiency in the special environment of the mine due to the increase in the connection of work links; the non-reusability of support materials is not in line with the concept of sustainable development and cannot reduce costs. Summary of the invention

[0004] The purpose of the present invention is to provide a coal mine support component with high-strength cemented carbide mortise and tenon joints, aiming to overcome the defects of the prior art and solve the problems of complex structure, non-reusable materials, poor versatility and interchangeability.

[0005] To this end, the present invention proposes a coal mine support component connected by high-strength hard alloy mortise and tenon joints, comprising a top arc-shaped support rod, a pair of symmetrically arranged bottom vertical support rods and a pair of middle arc-shaped support rods, and each support rod is connected in turn by a connector 1 or a connector 2; the top arc-shaped support rod, the bottom vertical support rod and the middle arc-shaped support rod are aluminum alloy profiles with the same cross-sectional shape; the cross-sectional shape is an I-shaped; strip grooves are provided at both ends of the middle arc-shaped support rod, and the connector 1 and the connector 2 have the same structure, both of which are rectangular blocks with T-shaped grooves; the top arc-shaped support rod, the bottom vertical support rod and the middle arc-shaped support rod are circumferentially connected to form a complete support structure; Among them, the top arc-shaped support rod, the bottom vertical support rod and the middle arc-shaped support rod are also provided with a pin hole 1 perpendicular to the upper and lower surfaces; the connecting member 1 and the connecting member 2 are provided with a pin hole 2, and the fixation is strengthened by inserting pins or bolt fasteners into the pin hole 1 and the pin hole 2.

[0006] As a preferred technical solution of the present application, adjacent bottom vertical support rods are axially reinforced and fixed by diagonal support rods, wherein the diagonal support rods are long strip-shaped support rods, and both ends of the diagonal support rods are provided with diagonal tenons, and the diagonal tenons match the strip grooves opened on the bottom vertical support rods.

[0007] As a preferred technical solution of the present application, a through hole is provided on the diagonal support rod, and a pin is inserted into the through hole on the diagonal support rod and the pin hole on the bottom vertical support rod to ensure a stable connection between the adjacent bottom vertical support rods.

[0008] As a preferred technical solution of the present application, adjacent top arc-shaped support rods are axially reinforced and fixed by means of a long strip-shaped axial reinforcement rod. Rectangular tenons are respectively provided at both ends of the axial reinforcement rod. The rectangular tenons match the strip grooves on the top arc-shaped support rods and are then fixed by pins.

[0009] As a preferred technical solution of the present application, the adjacent middle arc support rods also need to be axially reinforced and fixed by means of a long axial reinforcement rod 2. The axial reinforcement rod 2 has the same structure as the axial reinforcement rod 1. The two ends of the axial reinforcement rod 2 are respectively provided with a rectangular tenon, which matches the strip groove on the middle arc support rod and is then fixed by a pin.

[0010] As a preferred technical solution of the present application, an elliptical weight-reducing hole is provided at the center of the middle arc-shaped support rod.

[0011] Beneficial effects of the high-strength hard alloy mortise and tenon jointed coal mine support member provided by the present invention: 1. High safety performance: To ensure that high-strength alloys maintain high safety performance under complex geological conditions, it is necessary to start from many aspects such as material selection, structural design and construction quality control.

[0012] 2. Simplified support structure: Complex support structures will indeed reduce work efficiency in special mine environments due to the increased number of work links. Therefore, a simplified structure and a modular closed-loop design that is mutually force-bearing is the key technology for support design. There is currently no ready-made professional equipment on the market to produce two-dimensional curved components, and our team needs to design special equipment to produce them according to their special processing technology.

[0013] 3. Low cost and high efficiency: reduce the overall construction cost and improve construction efficiency.

[0014] 4. Reusable materials: High-strength alloy materials should have good recyclability and reprocessing performance. The repeated use of support materials is in line with the concept of sustainable development and can also reduce costs.

[0015] 5. High versatility and interchangeability: The versatility and interchangeability of components under various environmental conditions, such as development tunnels, preparation tunnels and mining tunnels. The method and type of support depend on the geographical location and function of various tunnels and chambers.

[0016] 6. Mixed support can be formed: Under complex environmental conditions, a single support method may not meet the requirements, so it is necessary to consider mixed support with various support schemes.

[0017] 7. Since the joints use mortise and tenon joints and anchor bolts to bear the force together, it can effectively resist the yielding of anchor bolts and the fracture of alloy materials under pressure.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a structural schematic diagram of a coal mine support component connected by a high-strength hard alloy mortise and tenon joint according to the present invention; Figure 2 A side view of a coal mine support component connected by a high-strength hard alloy mortise and tenon joint according to the present invention; Figure 3 A top view of a coal mine support component connected by a high-strength cemented carbide mortise and tenon joint according to the present invention; Figure 4 It is a cross-sectional view of a connecting member 1 in a coal mine support component connected by a high-strength hard alloy mortise and tenon joint according to the present invention; Figure 5 It is a cross-sectional view of a connecting member 1 and a middle arc-shaped support rod in a coal mine support component connected by a high-strength hard alloy mortise and tenon joint according to the present invention; Figure 6 It is a structural diagram of the diagonal brace rod in the coal mine support component connected by high-strength hard alloy mortise and tenon joints of the present invention; Figure 7 It is a schematic diagram of the top view structure of the diagonal bracing rod in the coal mine support component connected by the high-strength hard alloy mortise and tenon joint of the present invention; Description of Reference Numerals 1. Bottom vertical support rod; 2. Middle arc-shaped support rod; 3. Top arc-shaped support rod; 4. Axial reinforcement rod one; 5. Diagonal support rod; 6. Connector one; 7. Connector two; 8. Axial reinforcement rod two; 9. Pin; 21. Weight reduction hole; 22. Strip groove; 23. Pin hole one; 51. Oblique tenon; 52. Through hole; 61. T-shaped groove; 62. Pin hole two. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] like Figure 1 to Figure 7 As shown, the coal mine support component with high-strength carbide mortise and tenon joints of the present invention includes: a top arc-shaped support rod 3, a pair of symmetrically arranged bottom vertical support rods 1 and a pair of middle arc-shaped support rods 2, and each support rod is connected by a connecting piece 1 6 or a connecting piece 2 7 to form an arc-shaped support component that matches the shape of the inner wall of the coal mine.

[0022] Specifically, the top arc support rod 3, the bottom vertical support rod 1 and the middle arc support rod 2 are aluminum alloy profiles with the same cross-sectional shape; the cross-section of the aluminum alloy profile is I-shaped; an elliptical weight-reducing hole 21 is provided at the center of the middle arc support rod 2, and strip grooves 22 are provided at both ends of the middle arc support rod 2. The connecting piece 1 6 and the connecting piece 2 7 have the same structure, and are both rectangular blocks with T-shaped grooves 61; thereby, the top arc support rod 3, the bottom vertical support rod 1 and the middle arc support rod 2 can be circumferentially connected through the connecting piece 1 6 or the connecting piece 2 7 to form a complete support structure.

[0023] The top arc support rod 3, the bottom vertical support rod 1 and the middle arc support rod 2 are also provided with a pin hole 23 perpendicular to the upper and lower surfaces; similarly, the connecting piece 1 6 and the connecting piece 2 7 are provided with a pin hole 2 62. After the middle arc support rod 2 is circumferentially connected to the connecting piece 1 6, it is fixed by inserting a pin 9 or a bolt fastener into the pin hole 23 and the pin hole 2 62 to prevent the risk of falling off between the components.

[0024] In this embodiment, in order to further strengthen the strength of the supporting member, a plurality of axial reinforcing rods 1 4, diagonal bracing rods 5 and axial reinforcing rods 2 8 are added between adjacent support rods; wherein the diagonal bracing rods 5 are long strip-shaped support rods, and both ends of the diagonal bracing rods 5 are provided with diagonal tenons 51, which match the strip grooves 22 opened at both ends of the bottom vertical support rods 1. One end of the diagonal bracing rod 5 in the inclined state is connected to the bottom of the bottom vertical support rod 1, and the other end of the diagonal bracing rod 5 is connected to the top of the adjacent bottom vertical support rod 1, so as to realize axial reinforcement and fixation.

[0025] In addition, a through hole 52 is provided on the diagonal support rod 5, and a pin is inserted into the through hole 52 on the diagonal support rod 5 and a pin hole 23 on the bottom vertical support rod 1 to achieve a stable connection between the adjacent vertical support rods 1.

[0026] Similarly, adjacent top arc-shaped support rods 3 are axially reinforced and fixed by means of a long strip-shaped axial reinforcement rod 4, wherein both ends of the axial reinforcement rod 4 are respectively provided with a rectangular tenon, which matches the strip groove 22 on the top arc-shaped support rod 3 and is then fixed by a pin 9.

[0027] In addition, the adjacent middle arc-shaped support rods 2 also need to be axially reinforced and fixed through long axial reinforcement rods 8, wherein the axial reinforcement rods 28 have the same structure as the axial reinforcement rods 1 4, and the two ends of the axial reinforcement rods 28 are respectively provided with rectangular tenons, which match the strip grooves 22 on the middle arc-shaped support rods 2, and then fixed by pins 9.

[0028] The high-strength carbide mortise and tenon jointed coal mine support component of the present invention also has the following characteristics: 1. It maintains high safety performance under complex geological conditions; 2. Simplified structure. Complex support structures are often accompanied by more work links, which to a certain extent reduces its work efficiency under the special environment of the mine. 3. Reduce the overall construction cost and improve construction efficiency. 4. The support material can be reused repeatedly. 5. Versatility under various environmental conditions. 6. Mixed support with various support schemes under complex environmental conditions.

[0029] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A coal mine support component with high-strength hard alloy mortise and tenon joints, characterized in that: include: A top arc-shaped support rod (3), a pair of symmetrically arranged bottom vertical support rods (1) and a pair of middle arc-shaped support rods (2), wherein the support rods are connected in sequence via a first connecting member (6) or a second connecting member (7); The top arc-shaped support rod (3), the bottom vertical support rod (1) and the middle arc-shaped support rod (2) are aluminum alloy profiles with the same cross-sectional shape; the cross-sectional shape is an I-shaped; strip grooves (22) are provided at both ends of the middle arc-shaped support rod (2); the first connecting member (6) and the second connecting member (7) have the same structure, both of which are rectangular blocks with T-shaped grooves (61); the top arc-shaped support rod (3), the bottom vertical support rod (1) and the middle arc-shaped support rod (2) are circumferentially connected to form a complete support structure; The top arc-shaped support rod (3), the bottom vertical support rod (1) and the middle arc-shaped support rod (2) are also provided with a pin hole (23) perpendicular to the upper and lower surfaces; the connecting piece (6) and the connecting piece (7) are provided with a pin hole (62), and a pin (9) or a bolt fastener is inserted into the pin hole (23) and the pin hole (62) to strengthen the fixation.

2. The high-strength hard alloy mortise and tenon jointed coal mine support member according to claim 1 is characterized in that: Adjacent bottom vertical support rods (1) are axially reinforced and fixed by diagonal support rods (5), wherein the diagonal support rods (5) are long strip-shaped support rods, and both ends of the diagonal support rods (5) are provided with diagonal tenons (51), and the diagonal tenons (51) match the strip grooves (22) provided on the bottom vertical support rods (1).

3. The high-strength hard alloy mortise and tenon jointed coal mine support member according to claim 2 is characterized in that: The diagonal support rod (5) is provided with a through hole (52), and a pin is inserted into the through hole (52) on the diagonal support rod (5) and the pin hole (23) on the bottom vertical support rod (1), so that adjacent bottom vertical support rods (1) are stably connected.

4. The high-strength hard alloy mortise and tenon jointed coal mine support member according to claim 1, characterized in that: Adjacent top arc-shaped support rods (3) are axially reinforced and fixed by means of a long strip-shaped axial reinforcement rod (4), and both ends of the axial reinforcement rod (4) are respectively provided with a rectangular tenon, which matches the strip groove (22) on the top arc-shaped support rod (3) and is then fixed by means of a pin (9).

5. The high-strength hard alloy mortise and tenon jointed coal mine support member according to claim 4 is characterized in that: The adjacent intermediate arc-shaped support rods (2) also need to be axially reinforced and fixed by means of a long strip-shaped axial reinforcement rod 2 (8). The axial reinforcement rod 2 (8) has the same structure as the axial reinforcement rod 1 (4). The two ends of the axial reinforcement rod 2 (8) are respectively provided with a rectangular tenon, which matches the strip groove (22) on the intermediate arc-shaped support rod (2) and is then fixed by means of a pin (9).

6. The high-strength hard alloy mortise and tenon jointed coal mine support member according to claim 1, characterized in that: An elliptical weight-reducing hole (21) is provided at the center of the middle arc-shaped support rod (2).

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