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

Abstract

The utility model relates to a high-strength hard alloy mortise and tenon joint coal mine well supporting member which comprises a top arc-shaped supporting rod, a pair of bottom vertical supporting rods 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 utility model relates to the technical field of mine support components, 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. Utility Model Content

[0004] The utility model aims to provide a coal mine support component with high-strength hard alloy 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 utility model 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 connecting piece 1 or a connecting piece 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 connecting piece 1 and the connecting piece 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;

[0006] 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.

[0007] As a preferred technical solution of the present application, the adjacent bottom vertical support rods are axially strengthened and fixed by diagonal braces. Among them, the diagonal braces are strip-shaped support rods, and diagonal tenons are provided at both ends of the diagonal braces, and the diagonal tenons match the strip-shaped grooves opened on the bottom vertical support rods.

[0008] As a preferred technical solution of the present application, through holes are provided on the diagonal braces, and adjacent bottom vertical support rods are stably connected by inserting pins into the through holes on the diagonal braces and the pin holes I on the bottom vertical support rods.

[0009] As a preferred technical solution of the present application, the adjacent top arc support rods are axially strengthened and fixed by a long strip-shaped axial strengthening rod I. Cuboid tenons are respectively provided at both ends of the axial strengthening rod I, and the cuboid tenons match the strip-shaped grooves on the top arc support rods, and then are fixed by pins.

[0010] As a preferred technical solution of the present application, the adjacent middle arc support rods also need to be axially strengthened and fixed by a long strip-shaped axial strengthening rod II. The axial strengthening rod II has the same structure as the axial strengthening rod I. Cuboid tenons are respectively provided at both ends of the axial strengthening rod II, and the cuboid tenons match the strip-shaped grooves on the middle arc support rods, and then are fixed by pins.

[0011] As a preferred technical solution of the present application, an oval weight-reducing hole is provided at the center position of the middle arc support rod.

[0012] Beneficial effects of the coal mine shaft support member with high-strength cemented carbide mortise and tenon connection provided by the present utility model:

[0013] 1. High safety performance: To ensure that high-strength alloys maintain high safety performance under complex geological conditions, it is necessary to start from aspects such as material selection, structural design, and construction quality control.

[0014] 2. Simplified support structure: A support with a complex structure will indeed reduce the working efficiency in the special environment of the mine due to the increase in the connection of working links. Therefore, a modular closed-loop design with a simplified structure and mutual force is the key technology for support design. Among them, there is no ready-made professional equipment on the market to produce two-dimensional bending members, and our company's team needs to design special equipment according to its special processing technology for production.

[0015] 3. Low cost and high efficiency: Reduce the comprehensive construction cost and improve the construction efficiency.

[0016] 4. Materials can be reused: High-strength alloy materials should have good recyclability and reprocessing performance. The repeated use of support materials conforms to the concept of sustainable development and can also reduce costs.

[0017] 5. High universality and interchangeability: The universality and interchangeability of components under various environmental conditions. For example, in development headings, preparatory headings, and extraction headings, the support methods and types depend on the geographical locations and functions of various headings and chambers.

[0018] 6. Hybrid support can be formed: Under complex environmental conditions, a single support method may not meet the requirements. Therefore, it is necessary to consider hybrid support with various support schemes.

[0019] 7. Due to the connection method that combines mortise-tenon connection and anchor bolts at the joint, it can effectively resist the yield of anchor bolts and the fracture of alloy materials under pressure.

[0020] In addition to the purposes, features, and advantages described above, the present application has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this application are used to provide a further understanding of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0022] Figure 1 is a schematic structural view of a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0023] Figure 2 is a side view of a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0024] Figure 3 is a top view of a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0025] Figure 4 is a sectional view of a connection part of a connecting member in a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0026] Figure 5 is a sectional view of a connecting member one and an intermediate arc-shaped support rod in a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0027] Figure 6 is a schematic structural view of a diagonal brace in a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0028] Figure 7 is a top-down structural view of a diagonal brace in a support member for a coal mine shaft with high-strength cemented carbide mortise-tenon connection of the present utility model;

[0029] Description of Reference Numerals

[0030] 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

[0031] 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.

[0032] like Figures 1 to 7 As shown, the high-strength carbide mortise and tenon jointed coal mine support component of the utility model comprises: 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.

[0033] 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.

[0034] 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.

[0035] In this embodiment, in order to further strengthen the strength of the support members, a number of first axial reinforcing rods 4, diagonal braces 5 and second axial reinforcing rods 8 are added between adjacent support rods. Among them, the diagonal brace 5 is a long support rod, and diagonal tenons 51 are provided at both ends of the diagonal brace 5, which are matched with the strip-shaped grooves 22 opened at both ends of the bottom vertical support rod 1. One end of the diagonal brace 5 in an inclined state is connected to the bottom of the bottom vertical support rod 1, and the other end of the diagonal brace 5 is connected to the top of the adjacent bottom vertical support rod 1 to achieve axial reinforcement and fixation.

[0036] In addition, through holes 52 are provided on the diagonal brace 5, and stable connection between adjacent vertical support rods 1 is achieved by inserting pins into the through holes 52 on the diagonal brace 5 and the first pin holes 23 on the bottom vertical support rod 1.

[0037] Similarly, axial reinforcement and fixation are carried out between adjacent top arc-shaped support rods 3 through long first axial reinforcing rods 4. Among them, rectangular parallelepiped tenons are provided at both ends of the first axial reinforcing rod 4, which are matched with the strip-shaped grooves 22 on the top arc-shaped support rod 3, and then fixed by pins 9.

[0038] In addition, axial reinforcement and fixation are also required between adjacent middle arc-shaped support rods 2 through long second axial reinforcing rods 8. Among them, the second axial reinforcing rod 8 has the same structure as the first axial reinforcing rod 4. Rectangular parallelepiped tenons are provided at both ends of the second axial reinforcing rod 8, which are matched with the strip-shaped grooves 22 on the middle arc-shaped support rod 2, and then fixed by pins 9.

[0039] The support member for a coal mine shaft with high-strength cemented carbide mortise and tenon connection of the present utility model also has the following characteristics: 1. It can maintain a high safety performance under complex geological conditions. 2. The structure is simplified. Complex support often involves more working links, which to a certain extent reduces the working efficiency in the special environment of the mine shaft. 3. The comprehensive construction cost is reduced and the construction efficiency is improved. 4. The support materials can be reused. 5. Universality under various environmental conditions. 6. Hybrid support with various support schemes under complex environmental conditions.

[0040] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. 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 support member for a coal mine shaft with high-strength carbide 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 cemented carbide mortise and tenon joint coal mine shaft support member according to claim 1, wherein 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 coal mine shaft support member with high-strength cemented carbide tenon-mortise connection according to claim 2, 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 cemented carbide mortise and tenon joint coal mine shaft 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 cemented carbide tenon-mortise connection coal mine shaft support member according to claim 4, 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 coal mine shaft support member with high-strength cemented carbide mortise and tenon connection 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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