Trapezoidal roof truss type coal conveying trestle

Abstract

The utility model discloses a trapezoid roof truss type coal conveying trestle which comprises a steel truss structure, a plurality of trapezoid roof truss structures are hinged to the top of the steel truss structure at equal intervals in the axial direction of the steel truss structure, the middles of the trapezoid roof truss structures are connected through roof tie bars, and the adjacent trapezoid roof truss structures are connected through roof supporting structures. A floor supporting structure is hinged to the bottom of the steel truss structure. The coal conveying trestle solves the problem that an existing coal conveying trestle is weak in torsional rigidity under the large size.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering, and in particular relates to a ladder-shaped roof frame type coal conveying trestle. Background Art

[0002] Conventional coal handling trestle bridge corridor structures mostly adopt truss type, and the two ends of the coal handling trestle bridge corridor structure are supported on the support of the bracket structure. The cross section of the trestle is a closed portal steel frame, and the traditional height is 2.5 to 3.6 meters. Its structural height is limited and cannot meet the operation of large equipment trolleys; especially when the main truss requires a space requirement of 7 meters or more in height and 10 meters or more in width, if the traditional form of trestle is still used, the overall torsional stiffness of the steel trestle is relatively weak. Utility Model Content

[0003] The utility model aims to provide a trapezoidal roof frame type coal conveying trestle, which solves the problem that the torsional rigidity of the existing coal conveying trestle is weak under large size.

[0004] The technical solution adopted by the utility model is a trapezoidal roof frame type coal conveying trestle, comprising a steel truss structure, a plurality of trapezoidal roof frame structures are hingedly connected along the axial direction at equal intervals on the top of the steel truss structure, the middle parts of the plurality of trapezoidal roof frame structures are connected by roof tie rods, adjacent trapezoidal roof frame structures are connected by roof supporting structures, and a floor supporting structure is hingedly connected to the bottom of the steel truss structure.

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

[0006] The floor support structure includes two floor longitudinal beams, which are respectively connected to the two axial bottom ends of the steel truss structure. A number of floor cross beams are hinged between the two floor longitudinal beams and at equal intervals along their axial directions. A number of floor secondary beams are hinged between adjacent floor cross beams. All connection points between the floor cross beams and the floor secondary beams are arranged in a matrix, and an X-shaped floor horizontal support is arranged between each group of two adjacent floor secondary beams located in the middle.

[0007] The end of each horizontal floor support is hinged to the end of the adjacent floor secondary beam.

[0008] Each trapezoidal roof truss structure includes a trapezoidal roof truss lower chord and two trapezoidal roof truss upper chords, the two trapezoidal roof truss upper chords are connected and the connection is at an obtuse angle, the connection of the two trapezoidal roof truss upper chords is hinged to the top of the roof tie, one end of each trapezoidal roof truss upper chord away from the roof tie is hinged to the top of the steel truss structure, the middle of the trapezoidal roof truss lower chord is hinged to the bottom of the roof tie, both ends of the trapezoidal roof truss lower chord are hinged to the inner wall of the steel truss structure, a number of vertical supports are hinged between each trapezoidal roof truss upper chord and the trapezoidal roof truss lower chord, each vertical support is arranged parallel to the roof tie, truss webs are hinged between the vertical supports and the steel truss structure, between adjacent vertical supports, and between the vertical supports and the roof tie, and adjacent truss webs are arranged at an obtuse angle.

[0009] The two upper chords of the trapezoidal roof trusses are formed in one piece.

[0010] The roof supporting structure includes several X-shaped horizontal supports for upper chords of the roof truss and several X-shaped horizontal supports for lower chords of the roof truss. The four ends of each horizontal support for upper chords of the roof truss are respectively hinged to the four corners of a rectangle consisting of the top of the roof tie rod, the top of the steel truss structure, and the adjacent and mutually parallel trapezoidal upper chords of the roof truss. The four ends of each horizontal support for lower chords of the roof truss are respectively hinged to the four corners of a rectangle consisting of the bottom of the roof tie rod, the adjacent trapezoidal lower chords of the roof truss, and the inner wall of the steel truss structure.

[0011] The beneficial effects of the utility model are as follows: the trapezoidal roof frame type coal conveying trestle of the utility model can provide a larger equipment use space by setting the trapezoidal roof frame structure, and has strong torsional rigidity, stable structure, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model of a trapezoidal roof frame type coal conveying trestle;

[0013] Figure 2 It is a schematic diagram of the floor support structure of the trapezoidal roof frame type coal handling trestle of the utility model;

[0014] Figure 3 It is a transverse cross-sectional view of the utility model of a trapezoidal roof frame type coal conveying trestle;

[0015] Figure 4 It is a longitudinal section view of the utility model of a trapezoidal roof frame type coal conveying trestle;

[0016] Figure 5 It is a schematic diagram of the roof support structure of the trapezoidal roof frame type coal conveying trestle of the utility model.

[0017] In the figure, 1. steel truss structure, 2. roof support structure, 3. floor support structure, 4. trapezoidal roof truss structure, 5. roof tie rod, 6. vertical support, 7. floor secondary beam, 8. floor cross beam, 9. floor horizontal support, 10. floor longitudinal beam, 11. trapezoidal roof truss upper chord, 12. trapezoidal roof truss lower chord, 13. roof truss web member, 14. roof truss upper chord horizontal support, 15. roof truss lower chord horizontal support. DETAILED DESCRIPTION

[0018] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0019] Example 1

[0020] The utility model has a ladder-shaped roof frame type coal conveying trestle, and the structure is as follows Figure 1 As shown, it includes a steel truss structure 1, a roof supporting structure 2, a floor supporting structure 3, and a trapezoidal roof truss structure 4; the top of the steel truss structure 1 is hinged with a plurality of trapezoidal roof truss structures 4 at equal intervals along its axial direction, and the middle parts of the plurality of trapezoidal roof truss structures 4 are connected by a roof tie rod 5, that is, the roof tie rod 5 is a rod that runs through the middle parts of the plurality of trapezoidal roof truss structures 4, and adjacent trapezoidal roof truss structures 4 are connected by the roof supporting structure 2, and the bottom of the steel truss structure 1 is hinged with the floor supporting structure 3, and the space truss system of the overall structure is formed by adopting node plate connection.

[0021] like Figure 2 As shown, the floor support structure 3 includes two floor longitudinal beams 10, a floor horizontal support 9, a plurality of floor cross beams 8, and a plurality of floor secondary beams 7; the two floor longitudinal beams 10 are respectively connected to the two axial bottom ends of the steel truss structure 1, a plurality of floor cross beams 8 are hingedly connected between the two floor longitudinal beams 10 and in sequence along the axial direction thereof at equal intervals, a plurality of floor secondary beams 7 are hingedly connected between adjacent floor cross beams 8, the floor secondary beams 7 are made of H-shaped steel, and all connection points between the floor cross beams 8 and the floor secondary beams 7 are arranged in a matrix, that is, a plurality of floor secondary beams 7 and the floor The floor cross beams 8 form a grid structure. Due to the coal unloading process requirements of the mobile trolley coal blender, an X-shaped floor horizontal support 9 is arranged between each group of two adjacent floor secondary beams 7 located in the middle position. The end of each floor horizontal support 9 is hinged to the end of the floor secondary beam 7 close to it. If no floor horizontal support 9 is arranged between the remaining floor secondary beams 7 and the floor cross beams 8, holes are formed to ensure the needs of coal unloading. The connection points between the floor cross beams 8, the floor secondary beams 7 and the floor horizontal supports 9 all keep the centroid lines of the cross sections intersecting at one point.

[0022] like Figure 3As shown, each trapezoidal roof truss structure 4 includes a trapezoidal roof truss lower chord 12, two trapezoidal roof truss upper chords 11, a roof truss web 13, and a vertical support; the two trapezoidal roof truss upper chords 11 are connected and the connection is at an obtuse angle, then each trapezoidal roof truss upper chord 11 and the roof tie 5, the trapezoidal roof truss lower chord 12, and the inner wall of the steel truss structure 1 form a trapezoidal structure, the two trapezoidal roof truss upper chords 11 are integrally formed, and the connection of the two trapezoidal roof truss upper chords 11 is hinged to the top of the roof tie 5, and each trapezoidal roof truss upper chord 11 is connected to the roof tie 5. One end of the trapezoidal roof truss upper chord 11 away from the roof tie 5 is hinged to the top of the steel truss structure 1, the middle of the trapezoidal roof truss lower chord 12 is hinged to the bottom of the roof tie 5, both ends of the trapezoidal roof truss lower chord 12 are hinged to the inner wall of the steel truss structure 1, and a plurality of truss webs 13 are hinged between the trapezoidal roof truss upper chord 11 and the trapezoidal roof truss lower chord 12. The plurality of truss webs 13 are connected in sequence, and adjacent truss webs 13 are arranged at an obtuse angle, thereby improving stability through the triangular structure.

[0023] Example 2

[0024] On the basis of Example 1, a plurality of vertical supports 6 are hinged between the upper chord 11 of the trapezoidal roof truss and the lower chord 12 of the trapezoidal roof truss, one end of each vertical support 6 is arranged at the connection between two adjacent roof truss webs 13, and the other end of the vertical support 6 is hinged to the upper chord 11 of the trapezoidal roof truss or the lower chord 12 of the trapezoidal roof truss, and each vertical support 6 is arranged parallel to the roof tie rod 5. By adopting this trapezoidal roof truss structure, the force on the upper chord 11 of the trapezoidal roof truss can be more uniform, and its appearance is closer to the bending moment diagram caused by the uniformly distributed load, and the material consumption is more economical.

[0025] Example 3

[0026] On the basis of Example 2, Figure 4 and Figure 5 As shown, the roof support structure 2 includes a plurality of X-shaped horizontal supports for upper chords of the trusses 14 and a plurality of X-shaped horizontal supports for lower chords of the trusses 15. The four ends of each horizontal support for upper chords of the trusses 14 are respectively hinged to the four corners of a rectangle formed by the top of the roof tie rod 5, the top of the steel truss structure 1, and the adjacent and mutually parallel trapezoidal upper chords of the trusses 11. The four ends of each horizontal support for lower chords of the trusses 15 are respectively hinged to the four corners of a rectangle formed by the bottom of the roof tie rod 5, the adjacent trapezoidal lower chords of the trusses 12, and the inner wall of the steel truss structure 1. By arranging the roof tie rod 5, the vertical support 6, the horizontal support for upper chords of the trusses 14 and the X-shaped horizontal support for lower chords of the trusses 15, it is ensured that the trapezoidal upper chords of the trusses 11 form a double-layer lateral force resistance system, which is equivalent to greatly improving the overall stiffness of the structure, which is very beneficial to the overall anti-torsion effect of the structure.

[0027] Since the various transverse sections of the roof beams of conventional coal conveying trestles are generally portal steel frame structures, the torsional rigidity is weak and the economy is not good when used in trestles with large cross-sectional dimensions. Therefore, the trapezoidal roof frame type coal conveying trestles of the utility model are composed of a stable spatial overall structural system with multiple trapezoidal roof frame structures, floor support structures, roof tie rods, roof support structures and other components. Compared with conventional structures, the utility model uses the trapezoidal roof frame structure in steel truss trestles, improves the rigidity of the roof beams and the overall torsional rigidity of the transverse structure, and provides a guarantee for the transverse spatial stability of the trestles.

Claims

1. A trapezoidal roof-frame type coal handling trestle, comprising a steel truss structure (1), characterized in that: The top of the steel truss structure (1) is hinged with a plurality of trapezoidal roof truss structures (4) at equal intervals along its axial direction, the middle parts of the plurality of trapezoidal roof truss structures (4) are connected by a roof tie rod (5), adjacent trapezoidal roof truss structures (4) are connected by a roof support structure (2), and the bottom of the steel truss structure (1) is hinged with a floor support structure (3).

2. The trapezoidal roof frame type coal handling trestle according to claim 1, characterized in that: The floor support structure (3) comprises two floor longitudinal beams (10), the two floor longitudinal beams (10) are respectively connected to the two axial bottom ends of the steel truss structure (1), a plurality of floor cross beams (8) are hingedly connected between the two floor longitudinal beams (10) and in sequence along the axial direction thereof at equal intervals, a plurality of floor secondary beams (7) are hingedly connected between adjacent floor cross beams (8), all connection points between the floor cross beams (8) and the floor secondary beams (7) are arranged in a matrix, and an X-shaped floor horizontal support (9) is provided between each group of two adjacent floor secondary beams (7) located in the middle.

3. The trapezoidal roof frame type coal handling trestle according to claim 2 is characterized in that: The end of each of the floor horizontal supports (9) is hinged to the end of the adjacent floor secondary beam (7).

4. The trapezoidal roof frame type coal handling trestle according to claim 1, characterized in that: Each of the trapezoidal roof truss structures (4) comprises a trapezoidal roof truss lower chord (12) and two trapezoidal roof truss upper chords (11), the two trapezoidal roof truss upper chords (11) are connected and the connection is at an obtuse angle, the connection of the two trapezoidal roof truss upper chords (11) is hinged to the top of the roof tie rod (5), one end of each trapezoidal roof truss upper chord (11) away from the roof tie rod (5) is hinged to the top of the steel truss structure (1), the middle part of the trapezoidal roof truss lower chord (12) is hinged to the bottom of the roof tie rod (5), and the trapezoidal roof truss lower chord (12) is hinged to the bottom of the roof tie rod (5). The two ends of the chord (12) are hinged to the inner wall of the steel truss structure (1); a plurality of vertical supports (6) are hinged between each of the upper chords (11) of the trapezoidal roof truss and the lower chords (12) of the trapezoidal roof truss; each of the vertical supports (6) is arranged parallel to the roof tie rod (5); a truss web (13) is hinged between the vertical supports (6) and the steel truss structure (1), between adjacent vertical supports (6), and between the vertical supports (6) and the roof tie rod (5); and adjacent truss webs (13) are arranged at an obtuse angle.

5. The trapezoidal roof frame type coal handling trestle according to claim 4, characterized in that: The two trapezoidal roof frame upper chords (11) are integrally formed.

6. The trapezoidal roof frame type coal handling trestle according to claim 4, characterized in that: The roof support structure (2) comprises a plurality of X-shaped roof truss upper chord horizontal supports (14) and a plurality of X-shaped roof truss lower chord horizontal supports (15), the four ends of each of the roof truss upper chord horizontal supports (14) are respectively hinged to the four corners of a rectangle formed by the top of the roof tie rod (5), the top of the steel truss structure (1), and adjacent and mutually parallel trapezoidal roof truss upper chords (11), and the four ends of each of the roof truss lower chord horizontal supports (15) are respectively hinged to the four corners of a rectangle formed by the bottom of the roof tie rod (5), the adjacent trapezoidal roof truss lower chord (12), and the inner wall of the steel truss structure (1).

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