Double-layer multi-belt conveyor trestle structure applied to coal mine transportation system

Abstract

The utility model discloses a double-layer multi-belt conveyor trestle structure applied to a coal mine transportation system, which comprises a plurality of trestle units connected through connecting nodes, each trestle unit is a cuboid and comprises two side vertical surface trusses arranged in parallel, and two parallel connection surface trusses are connected between the two side vertical surface trusses; and a cross section component is arranged in each trestle unit. The double-layer multi-belt conveyor trestle structure applied to a coal mine transportation system has the advantages of being compact in structure, low in investment cost and capable of improving the transportation efficiency of coal on the ground.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting structures of coal mine transportation equipment, in particular to a double-layer multi-belt conveyor trestle structure applied to a coal mine transportation system. Background Art

[0002] In recent years, with the rapid development of my country's coal mining industry, coal mine transportation systems have increasingly demanded higher efficiency. In existing coal mines, surface coal transportation primarily relies on a single conveyor belt supported by a single trestle. However, as coal mines continue to grow in size and production capacity, this transportation method is often limited by the transport capacity of a single conveyor belt, resulting in low coal transportation efficiency, restricting coal mine production capacity and becoming a bottleneck in coal mining. Furthermore, to meet coal mine production capacity, existing coal transportation methods often require the addition of multiple trestles within the limited confines of a mine or coal preparation plant. This not only consumes significant plant space, impacting overall plant planning, but also increases infrastructure investment costs and makes ongoing maintenance more difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system, which has the characteristics of compact structure, low investment cost and improved transportation efficiency of coal on the ground.

[0004] The technical solution adopted by the utility model is a double-layer multi-belt conveyor trestle structure applied to a coal mine transportation system, comprising a plurality of trestle units connected by connecting nodes, each trestle unit being a rectangular parallelepiped, comprising two parallel side trusses arranged in parallel, two parallel-face trusses being connected between the two side trusses; a cross-sectional member is arranged inside each trestle unit.

[0005] The utility model is also characterized in that:

[0006] The side elevation truss includes two parallel chords, one above the other, with a plurality of vertical web members fixedly connected vertically and equidistantly between the two chords; a first central cross member is fixedly connected to the midpoints of the plurality of vertical web members, and the first central cross member is parallel to and equidistant from the two chords; a diagonal spatial web member is fixedly connected to the truss formed by each chord, the first central cross member, and the two adjacent vertical web members along the diagonal line; adjacent diagonal spatial web members are symmetrically arranged along the vertical web members or the first central cross member;

[0007] Stiffening ribs are provided at the connections of the chord, the first middle cross bar, the spatial vertical web members and the spatial diagonal web members.

[0008] The parallel-plane truss includes several upper and lower horizontal bars arranged in parallel, and the number of the upper and lower horizontal bars is equal to the number of spatial vertical webs in a single side facade truss; the two ends of the upper and lower horizontal bars are respectively fixedly connected to the connection between the chord bars and the spatial vertical webs of the two side facade trusses; two horizontal diagonal braces are fixedly connected between two adjacent upper and lower horizontal bars; one end of each horizontal diagonal brace is fixedly connected to the midpoint of the middle upper and lower horizontal bars through node plate 1, and the other end is fixedly connected to the connection between the upper and lower horizontal bars on both sides and the side facade trusses through node plate 2; adjacent horizontal diagonal braces are symmetrically arranged along the upper and lower horizontal bars.

[0009] The cross-sectional member includes a second middle cross bar, and the number of the second middle cross bars is equal to the number of upper and lower cross bars in a single plane truss; the two ends of the second middle cross bar are respectively fixed to the connection between the corresponding first middle cross bar and the spatial vertical web of the two side facade trusses; the second middle cross bar and the upper and lower cross bars on the bottom surface are fixed with connecting beams, which are channel steels; a number of angle steel supports are fixed inside the connecting beam.

[0010] The interval between several angle steel supports is 0.6~1m.

[0011] Diagonal braces are fixedly connected between the second middle cross bar and the space vertical web bars, and between the upper upper and lower cross bars and the space vertical web bars.

[0012] Steel plates are laid between the connecting beams, and the length of the steel plates is equal to the length of the connecting beams; the steel plates are fixedly connected to the supporting angle steels; and patterned steel plate steps are arranged in the area outside the steel plates.

[0013] The connection node includes a splicing plate and high-strength bolts. The splicing plate is fixed to adjacent positions of the chords of two adjacent trestle units and adjacent positions of the first middle cross bars by the high-strength bolts to splice the two trestle units.

[0014] The chord, the first middle cross member, the spatial vertical web member, the spatial diagonal web member and the second middle cross member are all H-shaped steels; the horizontal diagonal braces are angle steels.

[0015] The beneficial effects of the utility model are:

[0016] The utility model is applied to the double-layer multi-belt trestle structure in the coal mine transportation system, which can significantly improve the efficiency of ground coal transportation, reduce energy consumption, and lower operation and maintenance costs. At the same time, its flexible design makes it possible to transport coal by different types, greatly improving the production efficiency and economic benefits of the coal mine. In addition, the trestle structure of the utility model can also flexibly adjust the number of belt conveyors and transportation routes according to the actual needs of the coal mine, providing convenience for the subsequent expansion and upgrading of the coal mine and meeting the transportation needs of the coal mine at different production stages. At the same time, it can also reduce the number of trestles in the factory area and the area occupied by the trestles, further freeing up more space for the construction or greening of other facilities in the coal mine, thereby improving the environmental quality and work efficiency of the entire factory area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the layout of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system according to the utility model;

[0018] Figure 2 This is a structural schematic diagram of the side elevation components of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system according to the present invention;

[0019] Figure 3 This is a structural schematic diagram of the upper and lower parallel connecting components of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system;

[0020] Figure 4 This is a schematic structural diagram of a cross-sectional component of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system according to the present invention;

[0021] Figure 5 This is a structural schematic diagram of a splicing node of an upper chord or lower chord of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system;

[0022] Figure 6 The utility model is a structural schematic diagram of a middle crossbar splicing node of a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system.

[0023] In the figure: 1, side elevation truss; 11, chord; 12, first middle cross member; 13, spatial vertical web member; 14, spatial diagonal web member; 15, stiffening rib;

[0024] 2. Flat truss; 21. Upper and lower cross bars; 22. Horizontal diagonal brace; 23. Node plate 1; 24. Node plate 2;

[0025] 3. Cross-section member; 31. Connecting beam; 32. Angle steel support; 33. Patterned steel plate step; 34. Diagonal brace; 35. Steel plate; 36. Second middle crossbar;

[0026] 4. Trestle splicing node; 41. Splicing plate; 42. High-strength bolts;

[0027] 5. Double-deck multi-belt conveyor trestle; 6. First workshop; 7. Second workshop; 8. Support; 9. Pier. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] The utility model is applied to the double-layer multi-belt conveyor trestle structure in the coal mine transportation system, such as Figure 1As shown, it is built between the first workshop 6 and the second workshop 7 and is used for transporting coal between the workshops. The specific structure includes several trestle units connected by connection nodes 4. Each trestle unit is a rectangular parallelepiped, including two parallel side trusses 1. Two parallel side trusses 2 are connected between the two side trusses 1. The two side trusses 1 and the two parallel side trusses 2 are connected as a whole to form a spatial structure. Each trestle unit is equipped with a cross-sectional member 3.

[0030] Side facade truss 1, such as Figure 2 As shown, it specifically includes two upper and lower parallel chords 11, and a number of spatial vertical webs 13 are fixed vertically and evenly spaced between the two chords 11; a first middle cross bar 12 is fixed at the midpoint of the number of spatial vertical webs 13, and the first middle cross bar 12 is parallel to the two chords 11 and equidistant; a spatial diagonal web 14 is fixed along the diagonal line in the truss formed by each chord 11, the first middle cross bar 12 and the two adjacent spatial vertical webs 13; adjacent spatial diagonal webs 14 are symmetrically arranged along the spatial vertical webs 13 or the first middle cross bar 12; the connection of the chord 11, the first middle cross bar 12, the spatial vertical webs 13 and the spatial diagonal webs 14 forms a stable truss in the plane. According to the number of internal conveyors and load requirements, H-shaped steels of different cross-section sizes are selected for the chord 11, the first middle cross bar 12, the spatial vertical web 13 and the spatial diagonal web 14. The components are connected by welding. To ensure the connection strength, full penetration welding is used at the flange and continuous full welding is used at the web.

[0031] Stiffening ribs 15 are provided at the connections of the chord 11, the first middle cross member 12, the spatial vertical web members 13 and the spatial diagonal web members 14 to enhance the strength and rigidity between the nodes. The stiffening ribs 15 are connected to the main structure through fillet welds.

[0032] Flat surface truss 2 Figure 3 As shown, it specifically includes a number of upper and lower cross bars 21 arranged in parallel, and the number of upper and lower cross bars 21 is equal to the number of spatial vertical web members 13 in a single side facade truss 1. The two ends of the upper and lower cross bars 21 are respectively fixed to the connection between the chord members 11 and the spatial vertical web members 13 of the two side facade trusses 1; two horizontal diagonal braces 22 are fixed between two adjacent upper and lower cross bars 21, and the horizontal diagonal braces 22 are angle steels; one end of each horizontal diagonal brace 22 is fixed to the midpoint of the middle upper and lower cross bars 21 through a node plate 1 23, and the other end is fixed to the connection between the upper and lower cross bars 21 on both sides and the side facade trusses 1 through a node plate 2 24; adjacent horizontal diagonal braces 22 are symmetrically arranged along the upper and lower cross bars 21. The upper and lower cross bars 21 are welded to the side facade trusses 1 by full penetration welding of the flanges and continuous full welding of the webs, and together with the horizontal diagonal braces 22, node plates 1 23, and node plates 24, form a stable spatial structure to ensure the strength and stability of the trestle.

[0033] In the space structure formed above, a cross-sectional member 3 is provided, such as Figure 4 It is the cross section of a double-deck steel trestle. The cross-sectional member 3 includes a second middle cross bar 36, the number of which is equal to the number of upper and lower cross bars 21 in a single parallel plane truss 2; the second middle cross bar 36 divides the trestle unit into upper and lower layers, and the two ends of the second middle cross bar 36 are respectively fixed to the connection between the corresponding first middle cross bar 12 and the spatial vertical web 13 of the two side elevation trusses 1, and are generally welded to the side elevation trusses 1 by full penetration welding of the flange and continuous full welding of the web. The second middle cross bar 36 and the upper and lower cross bars 21 on the bottom surface are fixed with a connecting beam 31, which is a channel steel; a plurality of angle steel supports 32 are fixed in the connecting beam 31, and the plurality of angle steel supports 32 are spaced 0.6 to 1 m apart. A steel plate 35 is laid between the connecting beams 31. The length of the steel plate 35 is equal to the length of the connecting beam 31. The steel plate 35 is fixedly connected to the angle steel supports 32. A belt conveyor is set on the steel plate 35. Figure 4 As can be seen from the example, one conveyor belt is installed on the upper level and two conveyors are installed on the lower level. The number and layout of conveyors can be adjusted according to actual needs in the project. A patterned steel plate step 33 is installed between every two second middle cross bars 36 and outside the steel plate 35 to provide space for staff to walk and perform maintenance. At the same time, to enhance the stability of the trestle, diagonal braces 34 are fixed to the corners of the upper part of the trestle, i.e., between the second middle cross bar 36 and the spatial vertical web member 13, and between the upper upper and lower cross bars 21 and the spatial vertical web member 13. The connections between the connecting beam 31, the angle steel support 32, the patterned steel plate step 33, the diagonal brace 34, and the steel plate 35 are all made by continuous full welding, and the weld height is determined according to the actual stress.

[0034] The double-layer multi-belt conveyor trestle 5 is composed of multiple trestle units connected by connection nodes 4. Specifically, the connection nodes 4 include splicing plates 41 and high-strength bolts 42. The splicing plates 41 are fixed to the adjacent parts of the chord rods 11 and the adjacent parts of the first middle crossbar 12 of two adjacent trestle units by high-strength bolts 42 to splice the two trestle units. Figure 5 and Figure 6 shown. Figure 5 Adjacent to the chord 11 of the upper or lower chord trestle unit, a connecting plate 41 is fixed on both sides of the chord, and fixed by a plurality of high-strength bolts 42; Figure 6 At the connection points of the first intermediate crossbars 12, connecting plates 41 are fixed only to the outside of adjacent first intermediate crossbars 12 of the two trestle units and secured with a number of high-strength bolts 42. This splicing method not only ensures the connection strength of the spliced ​​nodes, but also enables modular construction of the trestle. Different sections can be constructed simultaneously and then assembled together, greatly improving construction efficiency and facilitating later disassembly and maintenance. The stiffening ribs 15 at the connection points are located outside the connecting plates 41.

[0035] The structure consists of two trestles, one on the upper level and the other on the lower level, which can be equipped with two or more conveyor belts, forming a three-dimensional transportation network. This design can effectively solve the following problems existing in the existing coal mine transportation system:

[0036] Firstly, this double-layer multi-belt trestle structure can support multiple conveyors running simultaneously, maximizing transportation capacity within a limited space and significantly improving transportation efficiency. This solves the problem that existing coal mines are limited by the transportation capacity of a single conveyor, which greatly affects coal mine production capacity.

[0037] Secondly, this structure addresses the issue of numerous trestles within existing coal mines, which occupy significant space, impacting plant planning and increasing investment costs. Its compact design improves coal transportation capacity while reducing the footprint of infrastructure, optimizing the spatial layout of the coal mine and lowering construction and maintenance costs.

[0038] Furthermore, the double-deck trestle design makes coal transportation more flexible, resolving the existing issue of a single trestle and single belt conveyor transporting a single type of coal. This allows for the diversion and transportation of different coal types. Furthermore, the double-deck structure allows the upper and lower belt conveyors to operate independently, and during maintenance, independent operation of each layer does not affect overall transportation efficiency, further enhancing the stability and reliability of the system.

[0039] Finally, the double-deck trestle can adjust the number and transportation routes of the upper and lower belt conveyors according to demand, achieve rational allocation of resources, improve the adaptability and scalability of the coal mine transportation system, and lay a solid foundation for the long-term development of the coal mine.

[0040] Example 1

[0041] This embodiment provides a double-layer multi-belt conveyor trestle structure used in a coal mine transportation system, including a plurality of trestle units connected by connection nodes 4, each trestle unit is a rectangular parallelepiped, including two parallel side trusses 1, and two parallel-connected trusses 2 are connected between the two side trusses 1; a cross-sectional member 3 is arranged inside each trestle unit.

[0042] Example 2

[0043] On the basis of Example 1, Figure 2As shown, the side elevation truss 1 includes two upper and lower parallel chords 11, with a plurality of spatial vertical web members 13 fixedly connected vertically and equidistantly between the two chords 11; a first middle cross member 12 is fixedly connected to the midpoints of the plurality of spatial vertical web members 13, and the first middle cross member 12 is parallel to and equidistant from the upper and lower chords 11; a spatial diagonal web member 14 is fixedly connected along the diagonal line of the truss formed by each chord 11, the first middle cross member 12 and the two adjacent spatial vertical web members 13; adjacent spatial diagonal web members 14 are symmetrically arranged along the spatial vertical web members 13 or the first middle cross member 12;

[0044] Stiffening ribs 15 are provided at the connections of the chord 11 , the first middle cross member 12 , the spatial vertical web members 13 and the spatial diagonal web members 14 .

[0045] The chord 11, the first middle cross bar 12, the space vertical web 13, and the space diagonal web 14 are made of H-shaped steel with different cross-section sizes according to the number of internal belt conveyors and load requirements.

[0046] Flat surface truss 2, such as Figure 3 As shown, it includes several parallel upper and lower crossbars 21, the number of which is equal to the number of spatial vertical webs 13 in a single side elevation truss 1. The ends of the upper and lower crossbars 21 are respectively fixed to the connection between the chords 11 and the spatial vertical webs 13 of the two side elevation trusses 1. Two horizontal diagonal braces 22 are fixed between two adjacent upper and lower crossbars 21. The horizontal diagonal braces 22 are angle steel. One end of each horizontal diagonal brace 22 is fixed to the midpoint of the middle upper and lower crossbar 21 through a gusset plate 1 23, and the other end is fixed to the connection between the upper and lower crossbars 21 and the side elevation trusses 1 on both sides through a gusset plate 24. Adjacent horizontal diagonal braces 22 are symmetrically arranged along the upper and lower crossbars 21. The two side elevation trusses 1 and the two parallel plane trusses 2 are connected as a whole, forming a spatial structure.

[0047] Example 3

[0048] On the basis of Example 2, Figure 4 As shown, the cross-sectional member 3 includes a second central crossbar 36, the number of which is equal to the number of upper and lower crossbars 21 in a single plane truss 2. The second central crossbar 36 is an H-shaped steel. The two ends of the second central crossbar 36 are respectively fixed to the connection between the corresponding first central crossbar 12 and the spatial vertical web member 13 of the two side trusses 1. A connecting beam 31 is fixed to each of the second central crossbar 36 and the upper and lower crossbars 21 on the bottom surface. The connecting beam 31 is made of channel steel. A plurality of angle steel supports 32 are fixed to the connecting beam 31, with intervals of 0.6 to 1 meter between the angle steel supports 32.

[0049] Steel plates 35 are laid between the connecting beams 31 , and the width of the steel plates 35 is equal to the length of the connecting beams 31 ; the steel plates 35 are fixedly connected to the angle steel supports 32 ; and patterned steel plate steps 33 are provided between every two second middle cross bars 36 and outside the steel plates 35 .

[0050] Example 4

[0051] On the basis of Example 3, in order to enhance the stability of the pier, diagonal braces 34 are fixedly connected between the second middle cross bar 36 and the spatial vertical web members 13 and between the upper upper and lower cross bars 21 and the spatial vertical web members 13 .

[0052] Example 5

[0053] Based on Example 4, the connection node 4 includes a splicing plate 41 and high-strength bolts 42. The splicing plate 41 is fixed to the adjacent parts of the chords 11 of two adjacent trestle units and the adjacent parts of the first middle crossbar 12 by the high-strength bolts 42 to splice the two trestle units.

[0054] Example 6

[0055] This invention uses a new double-layer multi-belt conveyor trestle structure applied to the coal mine transportation system, and connects multiple trestle units through connection nodes 4 to form a double-layer multi-belt conveyor trestle 5, which connects the first workshop 6 and the second workshop 7. Figure 1 As shown, coal transportation between the two workshops is achieved. One end of the double-decker multi-belt trestle 5 is supported on the bracket of the first workshop 6, and the other end is supported on a pier 9 on the ground. A bracket 8 is installed in the middle. The bracket 8 can be installed or not depending on the span of the double-decker multi-belt trestle 5.

Claims

1. The double-layer multi-belt conveyor trestle structure used in the coal mine transportation system is characterized by: The invention comprises a plurality of trestle units connected by connecting nodes (4), each of the trestle units being a rectangular parallelepiped and comprising two parallel side trusses (1), two parallel side trusses (2) being connected between the two side trusses (1); and a cross-section member (3) being arranged inside each trestle unit.

2. The double-layer multi-belt conveyor trestle structure used in the coal mine transportation system according to claim 1 is characterized in that: The side elevation truss (1) comprises two upper and lower parallel chords (11), and a plurality of space vertical webs (13) are fixedly connected vertically and evenly spaced between the two chords (11); a first middle cross bar (12) is fixedly connected at the midpoint of the plurality of space vertical webs (13), and the first middle cross bar (12) is parallel to and evenly spaced from the upper and lower chords (11); a space diagonal web (14) is fixedly connected along the diagonal line of the truss formed by each chord (11), the first middle cross bar (12) and the two adjacent space vertical webs (13); and adjacent space diagonal webs (14) are symmetrically arranged along the space vertical webs (13) or the first middle cross bar (12); Stiffening ribs (15) are provided at the connections of the chord (11), the first middle crossbar (12), the spatial vertical web members (13), and the spatial diagonal web members (14).

3. The double-layer multi-belt conveyor trestle structure used in the coal mine transportation system according to claim 2 is characterized in that: The parallel-jointed truss (2) comprises a plurality of upper and lower cross bars (21) arranged in parallel, wherein the number of the upper and lower cross bars (21) is equal to the number of spatial vertical webs (13) in a single side elevation truss (1); the two ends of the upper and lower cross bars (21) are respectively fixedly connected to the connection between the chord bars (11) and the spatial vertical webs (13) of the two side elevation trusses (1); two horizontal diagonal braces (22) are fixedly connected between two adjacent upper and lower cross bars (21); one end of each horizontal diagonal brace (22) is fixedly connected to the midpoint of the middle upper and lower cross bars (21) through a node plate 1 (23), and the other end is fixedly connected to the connection between the upper and lower cross bars (21) on both sides and the side elevation trusses (1) through a node plate 2 (24); the adjacent horizontal diagonal braces (22) are symmetrically arranged along the upper and lower cross bars (21).

4. The double-layer multi-belt conveyor trestle structure used in the coal mine transportation system according to claim 3 is characterized in that: The cross-sectional member (3) includes a second middle cross bar (36), the number of which is equal to the number of the upper and lower cross bars (21) in a single plane truss (2); the two ends of the second middle cross bar (36) are respectively fixed to the connection between the corresponding first middle cross bars (12) and the spatial vertical web bars (13) of the two side elevation trusses (1); the second middle cross bar (36) and the upper and lower cross bars (21) on the bottom surface are both fixedly connected with a connecting beam (31), and the connecting beam (31) is a channel steel; a plurality of angle steel supports (32) are fixedly connected inside the connecting beam (31).

5. The double-layer multi-belt conveyor trestle structure used in the coal mine transportation system according to claim 4 is characterized in that: The intervals between the angle steel supports (32) are 0.6 to 1 m.

6. The double-layer multi-belt trestle structure used in a coal mine transportation system according to claim 4 is characterized in that: Diagonal braces (34) are fixedly connected between the second middle crossbar (36) and the spatial vertical web bars (13), and between the upper upper and lower crossbars (21) and the spatial vertical web bars (13).

7. The double-layer multi-belt conveyor trestle structure used in a coal mine transportation system according to claim 4 is characterized in that: A steel plate (35) is laid between the plurality of connecting beams (31), and the length of the steel plate (35) is equal to the length of the connecting beam (31); the steel plate (35) is fixedly connected to the plurality of angle steel supports (32); and patterned steel plate steps (33) are provided in the area outside the steel plate (35).

8. The double-layer multi-belt trestle structure used in a coal mine transportation system according to claim 3 is characterized in that: The connection node (4) includes a splicing plate (41) and high-strength bolts (42), and the splicing plate (41) is fixed to adjacent positions of the chords (11) of two adjacent trestle units and adjacent positions of the first middle crossbar (12) by the high-strength bolts (42) to splice the two trestle units.

9. The double-layer multi-belt trestle structure used in a coal mine transportation system according to claim 3, characterized in that: The chord (11), the first middle cross bar (12), the spatial vertical web (13), the spatial diagonal web (14), and the second middle cross bar (36) are all H-shaped steels; the horizontal diagonal brace (22) is an angle steel.

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