Engine test stand steel frame

Abstract

The utility model discloses an engine test bed steel frame, including steel column, hanging column and horizontal support spare, the utility model with steel column as the core bearing component, forms horizontal rigid connection through the first frame beam, second frame beam and steel beam of adjacent steel column top installation, constitutes spatial grid system, sets up the cross support system link between second frame beam, promotes the structural lateral displacement resistance ability significantly, combines steel beam pre-arch technology, ensures the stability under the large -span working condition, and the hanging column forms three point restraint system through internal structure, and the accurate positioning of cooperation assembly jig frame realizes the stable transmission of engine hoisting load, and the horizontal support spare constitutes the composite stress system by the vertical installation second connecting rod and the connecting rod of different inclination angle arrangement, forms spatial truss effect, effectively resists the horizontal vibration when the engine operation, prevents the frame torsional deformation, and the overall structure has high precision, anti -dynamic load and long -life characteristics.

Description

Technical Field

[0001] This utility model relates to the field of steel frame technology, specifically to a steel frame for engine test benches. Background Technology

[0002] The steel frame of the engine test stand is a special structural engineering project in the aircraft maintenance support facilities. It is mainly used for the support, transportation and accuracy assurance system before and after the test of aero engines. The engine test stand project consists of a preparation room, an air intake tower and test workshop, an ejector room and exhaust tower, and an auxiliary building. All of them are newly built buildings, and seismic joints are set between each building.

[0003] Currently, traditional engine test bench steel frames are difficult to meet the fatigue life requirements for long-term use under combined conditions of large spans, high loads, and dynamic test loads.

[0004] This, in turn, creates limitations in the construction and subsequent use of the engine test bench's steel frame. Utility Model Content

[0005] The purpose of this utility model is to provide a steel frame for an engine test bench to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a steel frame for an engine test bench, comprising steel columns, wherein the steel columns are bolted to the ground and mounting points, a first frame beam is installed on the upper diameter of adjacent steel columns, a steel beam is provided between the upper ends of adjacent steel columns, and a second frame beam is connected to both sides of the steel beam, the second frame beam is installed on the top of the steel column, a first support tie rod and a second support tie rod are connected between the second frame beam and the first frame beam, a roof steel beam is provided in the middle of the second frame beam, and further comprising a hanging column connected to the lower end of the roof steel beam and a horizontal support member installed at the bottom of the hanging column and connected to the outside of the first frame beam, the hanging column comprising a square tube, wherein connecting pieces are installed at equal intervals from top to bottom on the outside of the square tube, a bottom connecting plate is welded to the bottom of the square tube, and a top connecting plate is welded to the top of the square tube, a connecting frame is welded to the side of the square tube away from the connecting pieces, the bottom connecting plate is connected to one end of the horizontal support member, and the top connecting plate is connected to the bottom of the roof steel beam.

[0007] Preferably, the horizontal support includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. One end of the first connecting rod is locked to the first frame beam, and the other end of the first connecting rod is locked to the bottom connecting plate. The second connecting rod is locked to the first frame beam, and the other end of the second connecting rod is locked to the square tube. The two ends of the third connecting rod and the fourth connecting rod are respectively locked to the first frame beam and the bottom connecting plate.

[0008] Preferably, the square tube is locked to the outside of the assembly frame by a connecting piece provided on one side.

[0009] Preferably, the roof steel beam is equipped with connectors on both the left and right sides, and the roof steel beam is locked to the second frame beam through the connectors on both sides.

[0010] Preferably, the steel columns are arranged in four rows at equal intervals, and the upper outer surface of the left and right rows of steel columns is provided with a layer of the first frame beam.

[0011] Preferably, a tie rod is provided between the steel beam and the second frame beam, and adjacent steel beams are connected by the tie rod.

[0012] Preferably, the top mating plate has two pieces symmetrically arranged along the upper end of the square tube, and there is a gap between the two pieces of the square tube.

[0013] Preferably, the first connecting rod and the second connecting rod are symmetrically arranged between the first frame beam and the hanging column, and the first connecting rods on both sides are installed in opposite inclination directions.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses steel columns as the core load-bearing components. The first frame beam and the second frame beam installed on the top of the adjacent steel columns form a horizontal rigid connection with the steel beam, which together constitute a spatial grid system. The first support tie rod set between the second frame beams and the second support tie rod form a cross support system, which significantly improves the structure's resistance to lateral displacement and ensures that the overall stability is maintained during the test period. At the same time, the steel beam adopts pre-arching technology to offset the deformation under long-term load and ensure that the structure remains stable under large spans.

[0015] 2. This utility model features a hanging column, which is connected to the roof steel beam via a top connecting plate and to the horizontal support member via a bottom connecting plate. The connecting piece on the outside of the square tube is locked to the assembly frame, forming a three-point constraint system. This provides a precise positioning reference for the installation of the hanging column. The combined design of the connecting frame and the horizontal support member allows the hanging column to transfer the force to the first frame beam when bearing the engine lifting load, thus forming a stable suspension support structure. 3. This utility model incorporates horizontal support components, namely, the first to fourth connecting rods forming a composite force-bearing system. The second connecting rod is vertically installed to provide rigid support. The first, third, and fourth connecting rods are arranged at different angles to form a spatial truss effect, which effectively resists the horizontal vibration generated during engine operation and prevents the frame from torsional deformation. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the left-side cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the three-dimensional combined structure of the hanging column and the assembly frame of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the hanging column of this utility model; Figure 5 This is a schematic diagram of the connection structure between the hanging column and the roof steel beam of this utility model; Figure 6 This is a top view of the horizontal support component of this utility model.

[0017] In the diagram: Steel column-1, First frame beam-2, Steel beam-3, Second frame beam-4, First support tie rod-5, Second support tie rod-6, Roof steel beam-7, Hanging column-8, Square tube-81, Connecting piece-82, Bottom butt plate-83, Top butt plate-84, Connecting frame-85, Horizontal support component-9, First connecting rod-91, Second connecting rod-92, Third connecting rod-93, Fourth connecting rod-94, Assembly frame-10, Connector-11. Detailed Implementation

[0018] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0019] Please see Figures 1-2 This utility model provides a steel frame for an engine test bench, including steel columns 1, which are bolted to the ground and mounting points. A first frame beam 2 is installed on the upper diameter of adjacent steel columns 1, and a steel beam 3 is provided between the upper ends of adjacent steel columns 1. A second frame beam 4 is connected to both sides of the steel beam 3. The second frame beam 4 is installed on the top of the steel column 1. A first support tie rod 5 and a second support tie rod 6 are connected between the second frame beam 4 and the first frame beam 2. A roof steel beam 7 is provided in the middle of the second frame beam 4. The model also includes a hanging column 8 connected to the lower end of the roof steel beam 7 and a horizontal support member 9 installed at the bottom of the hanging column 8 and connected to the outside of the first frame beam 2.

[0020] Among them, four rows of steel columns 1 are equidistantly arranged, and a first frame beam 2 is provided on the upper outer side of the left and right rows of steel columns 1. In this way, the basic frame of the engine test bench steel frame is formed, ensuring the stability of the base structure.

[0021] Tie rods are installed between the steel beam 3 and the second frame beam 4, and adjacent steel beams 3 are connected by tie rods, thereby improving the structural strength between adjacent steel beams 3.

[0022] Please see Figures 3-5In this embodiment, the hanging column 8 includes a square tube 81. Four connecting pieces 82 are installed at equal intervals from top to bottom on the outside of the square tube 81. A bottom connecting plate 83 is welded to the bottom of the square tube 81, and a top connecting plate 84 is welded to the top of the square tube 81. A connecting frame 85 is welded to the side of the square tube 81 away from the connecting pieces 82. The bottom connecting plate 83 is connected to one end of the horizontal support member 9, and the top connecting plate 84 is connected to the bottom of the roof steel beam 7.

[0023] The square tube 81 is locked to the outside of the assembly frame 10 by a connecting piece 82 on one side.

[0024] Among them, the roof steel beam 7 is equipped with connectors 11 on both the left and right sides, and the roof steel beam 7 is locked to the second frame beam 4 through the connectors 11 on both sides.

[0025] Please see Figure 6 In this embodiment, the horizontal support 9 includes a first connecting rod 91, a second connecting rod 92, a third connecting rod 93, and a fourth connecting rod 94. One end of the first connecting rod 91 is locked to the first frame beam 2, and the other end of the first connecting rod 91 is locked to the bottom connecting plate 83. The second connecting rod 92 is locked to the first frame beam 2, and the other end of the second connecting rod 92 is locked to the square tube 81. The second connecting rod 92 is installed vertically. The two ends of the third connecting rod 93 and the fourth connecting rod 94 are locked to the first frame beam 2 and the bottom connecting plate 83, respectively. The third connecting rod 93 and the fourth connecting rod 94 are both installed in an inclined direction. At the same time, the inclination angle and direction of the third connecting rod 93 and the fourth connecting rod 94 are different.

[0026] The first connecting rod 91 and the second connecting rod 92 are symmetrically arranged between the first frame beam 2 and the hanging column 8, and the first connecting rods 91 on both sides are installed in opposite inclination directions. In other words, the multi-point connection of the first connecting rod 91, the second connecting rod 92, the third connecting rod 93 and the fourth connecting rod 94 ensures that the hanging column 8 is kept in a horizontal installation state.

[0027] The working principle is as follows: First, the steel frame uses steel column 1 as the core load-bearing component. Vertical load transfer is achieved through bolted connection with the ground cup-shaped foundation. The first frame beam 2, the second frame beam 4, and the steel beam 3 installed on the top of adjacent steel columns 1 form a horizontal rigid connection, which together constitutes a spatial grid system. This structure can evenly distribute the dynamic load generated during engine testing to each steel column 1, avoiding local stress concentration. The first support tie rod 5 and the second support tie rod 6 set between the second frame beams 4 form a cross support system, which significantly improves the structure's resistance to lateral displacement and ensures that the overall stability is maintained during the test period. At the same time, the steel beam 3 adopts pre-arching technology to offset the deformation under long-term load, ensuring that the structure remains stable under large spans. Second, the hanging column 8 is connected to the roof steel beam 7 through the top connecting plate 84, and the bottom connecting plate 83 is connected to the horizontal support 9. The connecting piece 82 on the outside of the square tube 81 is locked to the assembly frame 10 to form a three-point constraint system. The assembly frame 10 is fixed to the ground through the pre-embedded anchor plate to provide a precise positioning reference for the installation of the hanging column 8. The combined design of the connecting frame 85 and the horizontal support 9 enables the hanging column 8 to form a stable suspension support structure by transferring the force to the first frame beam 2 when bearing the engine lifting load. Third, the horizontal support 9 is composed of the first connecting rod 91 to the fourth connecting rod 94 to form a composite force system. The second connecting rod 92 is installed vertically to provide rigid support. The third connecting rod 93 and the fourth connecting rod 94 are arranged at different angles to form a spatial truss effect, so as to effectively resist the horizontal vibration generated during engine operation and prevent the frame from tortuous deformation. Fourth, a three-dimensional force network is formed through the multiple combinations of steel columns 1, frame beams, hanging columns 8 and horizontal support members 9. When the engine is hoisted to the designated position, the load is transferred step by step through the path of roof steel beams 7, hanging columns 8, horizontal support members 9 and the first frame beam 2, and finally diffused to the foundation through the column base. Each node is connected by high-strength bolts to ensure continuous and reliable force transmission, so as to meet the fatigue life requirements for long-term use under the combined working conditions of large span, high lifting weight and dynamic test load.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel frame for an engine test bench, comprising steel columns (1), wherein the steel columns (1) are bolted to the ground and mounting points, a first frame beam (2) is installed on the upper end of adjacent steel columns (1), a steel beam (3) is provided between the upper ends of adjacent steel columns (1), and a second frame beam (4) is connected to both sides of the steel beam (3), the second frame beam (4) is installed on the top of the steel column (1), a first support tie rod (5) and a second support tie rod (6) are connected between the second frame beam (4) and the first frame beam (2), and a roof steel beam (7) is provided in the middle of the second frame beam (4); Its features are: It also includes a hanging column (8) connected to the lower end of the roof steel beam (7) and a horizontal support (9) installed at the bottom of the hanging column (8) and connected to the outside of the first frame beam (2). The hanging column (8) includes a square tube (81). Connecting pieces (82) are installed at equal intervals from top to bottom on the outside of the square tube (81). A bottom connecting plate (83) is welded to the bottom of the square tube (81), and a top connecting plate (84) is welded to the top of the square tube (81). A connecting frame (85) is welded to the side of the square tube (81) away from the connecting piece (82). The bottom connecting plate (83) is connected to one end of the horizontal support (9), and the top connecting plate (84) is connected to the bottom of the roof steel beam (7).

2. The steel frame for an engine test bench according to claim 1, characterized in that: The horizontal support member (9) includes a first connecting rod (91), a second connecting rod (92), a third connecting rod (93) and a fourth connecting rod (94). One end of the first connecting rod (91) is locked to the first frame beam (2), and the other end of the first connecting rod (91) is locked to the bottom docking plate (83). The second connecting rod (92) is locked to the first frame beam (2), and the other end of the second connecting rod (92) is locked to the square tube (81). The two ends of the third connecting rod (93) and the fourth connecting rod (94) are respectively locked to the first frame beam (2) and the bottom docking plate (83).

3. The steel frame for an engine test bench according to claim 1, characterized in that: The square tube (81) is locked to the outside of the assembly frame (10) by a connecting piece (82) provided on one side.

4. The steel frame for an engine test bench according to claim 1, characterized in that: The roof steel beam (7) is equipped with connectors (11) on both the left and right sides, and the roof steel beam (7) is locked to the second frame beam (4) through the connectors (11) on both sides.

5. The steel frame of an engine test bench according to claim 1, characterized in that: The steel columns (1) are arranged in four rows at equal intervals, and the upper outer surface of the left and right rows of steel columns (1) is provided with a layer of the first frame beam (2).

6. The steel frame of an engine test bench according to claim 1, characterized in that: Tie rods are provided between the steel beam (3) and the second frame beam (4), and adjacent steel beams (3) are connected by tie rods.

7. The steel frame for an engine test bench according to claim 1, characterized in that: The top connecting plate (84) is provided with two pieces symmetrically opposite each other along the upper end of the square tube (81), and there is a gap between the two pieces of the square tube (81).

8. The steel frame of an engine test bench according to claim 2, characterized in that: The first connecting rod (91) and the second connecting rod (92) are symmetrically arranged between the first frame beam (2) and the hanging column (8), and the first connecting rods (91) on both sides are installed in opposite inclination directions.

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