A three-column steel structure vibration tower for full-rocket modal testing of large rockets

Abstract

The embodiment of the present invention discloses a three-column steel structure vibration tower for full-arrow modal testing of large rockets, wherein the three load-bearing columns are evenly arranged at 120 degrees to each other, including a main load-bearing column and two auxiliary load-bearing columns fixedly set on the tower foundation, and the entrance and exit of the rocket are between the two auxiliary load-bearing columns; the top frame beam is fixedly connected to the top of the three load-bearing columns, and the upper surface is covered with a rigid light-transmitting plate; the top large-tonnage multi-point suspension mechanism is fixedly installed on the top frame beam, which is used to lift the rocket and simulate the free-free boundary of the full-arrow modal test; the top of the vibration tower is located on the side of the rocket entrance and exit, and is fixedly installed with a top auxiliary lifting mechanism, which is used to assist in lifting the empty box state sub-stage rocket body into the interior of the vibration tower before the full-arrow modal test of the rocket. The technical solution provided by the embodiment of the present invention solves the problems of high construction cost and long construction period of existing large-scale rocket full-arrow modal test facilities.

Description

Technical Field

[0001] The present invention relates to the field of, but is not limited to, full-rocket rocket dynamics testing technology, and in particular to a three-column steel structure vibration tower used for full-rocket modal testing of large rockets. Background Art

[0002] The full-rocket modal test of a rocket is a necessary test before the launch of a new type of carrier rocket. It is necessary to test the full-rocket modes of the rocket in different second states under a simulated free-free flight state to determine the modal parameters of the rocket, including frequency, vibration mode, vibration mode slope and modal damping ratio.

[0003] The full-arrow modal test of large rockets is generally carried out through a dedicated vibration tower. The large-scale rocket full-arrow modal test facility is usually built in a dedicated building workshop with a height of more than tens of meters. The rocket is lifted and suspended by a crane mechanism on the top of the workshop, and the test system, excitation loading device, etc. are arranged in partitions on different floors. Because this type of vibration tower is generally built and implemented simultaneously with the dedicated workshop, the construction cost is high and the period is long. Summary of the Invention

[0004] Purpose of the invention: In order to solve the above technical problems, the embodiments of the present invention provide a three-column steel structure vibration tower for large-scale rocket full-arrow modal test, so as to solve the problems that the existing large-scale rocket full-arrow modal test facilities need to use the crane mechanism on the top of the factory building to lift and suspend the rocket, and the vibration tower is generally constructed and implemented simultaneously with the special factory building, which leads to high construction costs and long construction periods of the vibration tower.

[0005] The technical solution of the present invention: The embodiment of the present invention provides a three-column steel structure vibration tower for full-arrow modal testing of large rockets, comprising: a top frame beam 1, three load-bearing columns, a transverse reinforcement beam 3, a transverse functional frame beam 4, a top large-tonnage multi-point suspension mechanism 6, a top auxiliary crane mechanism 7, a transverse reinforcement frame beam 9, and a tower foundation 12;

[0006] Among them, the three bearing columns include a main bearing column 2 and two auxiliary bearing columns. The three bearing columns are fixedly established on the tower foundation 12, and the three bearing columns are evenly arranged at 120 degrees to each other. The inlet and outlet of the rocket 11 are between the two auxiliary bearing columns, and the span of the inlet and outlet must be greater than the diameter of the rocket 11 body; the main bearing column 2 and each auxiliary bearing column are rigidly connected by multiple transverse reinforcing rod beams 3 and transverse functional frame beams 4, and the two auxiliary bearing columns are rigidly connected by multiple transverse reinforcing rod beams 3 and transverse reinforcing frame beams 9;

[0007] The top box beam 1 is set as a "concave" shaped box beam structure and is fixedly connected to the tops of three bearing columns. The upper surface of the top box beam 1 is covered with a rigid light-transmitting plate; the large-tonnage multi-point suspension mechanism 6 at the top adopts a modular structure, and each suspension mechanism is fixedly installed on the top box beam 1; the large-tonnage multi-point suspension mechanism 6 at the top is used for lifting the rocket and simulating the free-free boundary of the full-rocket modal test.

[0008] At the top of the three-column steel structure vibration tower on one side of the rocket inlet and outlet, a top auxiliary gantry crane mechanism 7 is fixedly installed. The top auxiliary gantry crane mechanism 7 includes a cantilever beam fixedly connected to the bottom of the top box beam 1 and located at the central axis position of two auxiliary bearing columns, a traveling crane movably arranged on the cantilever beam, and a winch connected to the traveling crane; the top auxiliary gantry crane mechanism 7 is used to assist in lifting the sub-stage rocket body in the empty box state into the vibration tower before the full-rocket modal test of the rocket.

[0009] Optionally, in the three-column steel structure vibration tower for the full-rocket modal test of a large rocket as described above,

[0010] Multiple groups of anchor bolts are embedded in the tower foundation 12, which are embedded according to the size requirements of different carrier rocket vibration test tasks;

[0011] The installation positions of the three bearing columns on the tower foundation 12 are to select the corresponding position of the anchor bolts in the tower foundation 12 according to the size of the mission object for connection.

[0012] Optionally, in the three-column steel structure vibration tower for the full-rocket modal test of a large rocket as described above,

[0013] Each of the bearing columns adopts a modular structure, including: multiple standard section modules a spliced vertically and rigidly; the external contours and sizes of each standard section module a are the same;

[0014] Among them, each standard section module a includes a standard section frame 16, a ladder 13 arranged inside the standard section frame 16, a ladder handrail 14 and a platform guardrail 15; the standard section frame 16 is set as a steel structure welding assembly.

[0015] Optionally, in the three-column steel structure vibration tower for the full-rocket modal test of a large rocket as described above,

[0016] Two adjacent standard section modules a are connected by high-strength bolts, and the connecting bolts used to connect each module are subject to load verification to ensure that the connection stiffness and strength meet the design requirements;

[0017] The total height of the three-column steel structure vibration tower is adjusted by adjusting the number of standard section modules a, and the number of standard section modules a used is determined according to the size requirements of the test piece.

[0018] Optionally, in the three-column steel structure vibration tower for large rocket full-arrow modal test as described above,

[0019] The main load-bearing column 2 and the top standard section module of each auxiliary load-bearing column are fixedly connected by four transverse reinforcing beams 3;

[0020] The top standard section modules of the two auxiliary bearing columns are fixedly connected by a transverse reinforcing frame beam 9 .

[0021] Optionally, in the three-column steel structure vibration tower for large rocket full-arrow modal test as described above,

[0022] The main load-bearing column 2 and the non-top standard section module of the same layer of each auxiliary load-bearing column are fixedly connected by three transverse reinforcing beams 3 and one transverse functional frame beam 4;

[0023] The non-top standard section modules of the same layer of the two auxiliary bearing columns are fixedly connected by a transverse reinforcement frame beam 9, and the installation position of the transverse reinforcement frame beam 9 is flush with the transverse functional frame beam 4 of the standard section module a of the same layer.

[0024] Optionally, in the three-column steel structure vibration tower for large rocket full-arrow modal test as described above,

[0025] The transverse functional frame beam 4 is provided with a walking passage 17 inside, and the transverse reinforcement frame beam 9 is provided with a non-walkway structure, so that the transverse reinforcement frame beam 9 can be quickly disassembled and reinstalled after the rocket enters the tower;

[0026] The transverse functional frame beam 4 and the transverse reinforcement frame beam 9 are configured as structures of equal stiffness, so as to balance the overall stiffness of the three-column steel structure vibration tower.

[0027] Optionally, the three-column steel structure vibration tower for large rocket full-arrow modal test as described above further comprises: a liftable rainproof canvas 5;

[0028] A rainproof cloth placement rack is provided on the outer side of the bottom of the three supporting columns, and a liftable rainproof canvas 5 is arranged around the circumference of the three-column steel structure vibration tower through the rainproof cloth placement rack. When there is no rain, the liftable rainproof canvas 5 is folded and placed on the rainproof cloth placement rack to form a space for workers to enter and exit the vibration tower;

[0029] A traction motor is installed on the top of each of the three supporting columns, and is used to pull up or lower the liftable rainproof canvas 5 through the three traction motors.

[0030] Optionally, the three-column steel structure vibration tower for large rocket full-arrow modal test as described above further includes: an internal lighting system, a video monitoring system;

[0031] The internal lighting system and the video monitoring system are respectively installed on the three supporting columns and the top frame beam 1.

[0032] Beneficial effects of the present invention: The embodiment of the present invention provides a three-column steel structure vibration tower for full-arrow modal testing of large rockets. The main structure of the vibration tower includes three load-bearing columns (including one main load-bearing column and two auxiliary load-bearing columns), a transverse functional frame beam, a transverse reinforcement frame beam, a transverse reinforcement rod beam, a top frame beam, a tower foundation, a top large-tonnage four-point suspension mechanism, and a top auxiliary traveling hoist mechanism. The construction and implementation of the three-column steel structure vibration tower provided by the embodiment of the present invention does not require a dedicated high-rise building factory. Each component is modularly designed, and the load-bearing components are made of steel structure assembly weldments. Each load-bearing component is connected by bolts, which is convenient for adjusting the tower space size according to the size specifications of different rockets. It has the ability to resist natural disasters such as wind resistance, rain resistance and earthquake resistance, and has the characteristics of relatively short construction period, low cost and easy expansion. It can be used for full-arrow modal testing of large rockets. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0034] Figure 1 A front view of a three-column steel structure vibration tower for full-rocket modal testing of large rockets provided in an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A side view of a three-column steel structure vibration tower for full-arrow modal testing of large rockets provided by the illustrated embodiment;

[0036] Figure 3 for Figure 1 A top view of a three-column steel structure vibration tower for full-arrow modal testing of large rockets provided in the illustrated embodiment;

[0037] Figure 4 for Figure 1 The illustrated embodiment provides a schematic structural diagram of a standard section module for a load-bearing column in a three-column steel structure vibration tower for full-arrow modal testing of a large rocket;

[0038] Figure 5 for Figure 1 The illustrated embodiment provides a schematic structural diagram of a transverse functional frame beam walking passage in a three-column steel structure vibration tower for full-arrow modal testing of large rockets.

[0039] Description of reference numerals:

[0040] 1-top frame beam; 2-main load-bearing column; 3-transverse reinforcement beam; 4-transverse functional frame beam; 5-liftable rainproof canvas; 6-top large-tonnage multi-point suspension mechanism; 7-top auxiliary lifting mechanism; 8-first auxiliary load-bearing column; 9-transverse reinforcement frame beam; 10-second auxiliary load-bearing column; 11-rocket; 12-tower foundation; 13-ladder; 14-ladder handrail; 15-platform guardrail; 16-standard section frame; 17-transverse functional frame beam walking passage; a-standard section module. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any manner.

[0042] As explained in the above background technology, large-scale rocket full-arrow modal test facilities need to use a crane mechanism on the top of the factory building to lift and suspend the rocket, and the test system, excitation loading device, etc. need to be arranged in partitions on different floors. This type of vibration tower is generally constructed and implemented simultaneously with a dedicated factory building, which leads to problems such as high construction costs and long construction periods of the vibration tower.

[0043] In response to the above problems, an embodiment of the present invention provides a three-column steel structure vibration tower for full-arrow modal testing of large rockets. It not only has the ability to resist natural disasters such as wind resistance, rain resistance and earthquake resistance, but also has the characteristics of relatively short construction period, low cost and easy expansion. It can be applied to full-arrow modal testing of large carrier rockets.

[0044] The present invention provides the following specific embodiments that can be combined with each other. The same or similar concepts or processes may not be described in detail in some embodiments.

[0045] Figure 1 This is a front view of a three-column steel structure vibration tower for full-arrow modal testing of large rockets provided by an embodiment of the present invention. Figure 2 for Figure 1 The illustrated embodiment provides a side view of a three-column steel structure vibration tower for full-arrow modal testing of large rockets. Figure 3 for Figure 1 The embodiment shown provides a top view of a three-column steel structure vibration tower for full-arrow modal testing of large rockets. Figures 1 to 3 As shown, the three-column steel structure vibration tower for full-arrow modal testing of large rockets provided by an embodiment of the present invention includes the following main components: a top frame beam 1, three load-bearing columns, a transverse reinforcement beam 3, a transverse functional frame beam 4, a top large-tonnage multi-point suspension mechanism 6, a top auxiliary lifting mechanism 7, a transverse reinforcement frame beam 9 and a tower foundation 12.

[0046] Combine Figures 1 to 3 In the structure of the three-column steel structure vibration tower shown, the three bearing columns include a main bearing column 2 and two auxiliary bearing columns (the two auxiliary bearing columns specifically include a first auxiliary bearing column 8 and a second auxiliary bearing column 10). The three bearing columns are fixedly established on the tower foundation 12, and the three bearing columns are evenly arranged at 120 degrees to each other. Figure 3 The position relationship of the three supporting columns is shown in FIG. Figure 3 As shown, the entrance and exit of the rocket 11 are located between the two auxiliary supporting columns, and the span of the entrance and exit must be greater than the diameter of the rocket 11. In this embodiment of the present invention, the main supporting column 2 and each auxiliary supporting column are rigidly connected by multiple transverse reinforcing rod beams 3 and transverse functional frame beams 4, and the two auxiliary supporting columns are rigidly connected by multiple transverse reinforcing rod beams 3 and transverse reinforcing frame beams 9.

[0047] It should be noted that the three bearing columns provided in the embodiment of the present invention are connected as a whole with the tower foundation 12 through anchor bolts, and the vibration tower and the tower foundation 12 must be designed for wind resistance and earthquake resistance in accordance with relevant specifications for high-rise structures.

[0048] like Figures 1 to 3 In the structure of the three-column steel structure vibration tower shown, the top frame beam 1 is set as an "and"-shaped frame beam structure, which is fixedly connected to the top of the three load-bearing columns, and the upper surface of the top frame beam 1 is covered with a high-strength translucent plate; the top large-tonnage multi-point suspension mechanism 6 adopts a modular structure, in which each suspension mechanism is fixedly installed on the top frame beam 1; the top large-tonnage multi-point suspension mechanism 6 is used to lift the rocket and simulate the free-free boundary of the full-arrow modal test.

[0049] In the specific implementation of the embodiment of the present invention, the position relationship between the top frame beam 1 and the three bearing columns is shown in FIG. Figures 1 to 3 As shown, the top frame beam 1 is configured as a steel structure welding assembly, which is connected to the top end faces of the three bearing columns by high-strength bolts. The "and"-shaped top frame beam 1 is covered with a transparent component such as tempered organic glass to be closed, which can shield against wind and rain and allow light to pass through.

[0050] In the embodiment of the present invention, a large-tonnage multi-point suspension mechanism 6 is used to lift a rocket filled with fuel to leave the ground, thereby realizing the free-free boundary simulation of the full-arrow modal test; in the specific implementation, the top large-tonnage multi-point suspension mechanism 6, for example, selects a set (4 units) of top large-tonnage four-point suspension mechanisms, and the lifting capacity of a single suspension mechanism is not less than 200t, and is combined with load-bearing rings, low-rigidity spring tubes and other mechanisms. Each suspension mechanism specifically uses three high-strength horizontal axes installed on the top frame beam 1.

[0051] like Figures 1 to 3In the structure of the three-column steel structure vibration tower shown, the top of the three-column steel structure vibration tower is located on the side of the rocket inlet and outlet and is fixedly installed with a top auxiliary lifting mechanism 7.

[0052] The requirements of the embodiment of the present invention for the top auxiliary lifting mechanism 7 are: the lifting capacity must be greater than the weight of the rocket in the empty box state, for example, the lifting capacity is not less than 40t, and it is used to assist in lifting the empty box state sub-stage rocket body into the vibration tower before the full rocket modal test.

[0053] The embodiment of the present invention provides a three-column steel structure vibration tower for full-arrow modal testing of large rockets. The main structure of the vibration tower includes three load-bearing columns (including one main load-bearing column and two auxiliary load-bearing columns), a transverse functional frame beam, a transverse reinforcement frame beam, a transverse reinforcement rod beam, a top frame beam, a tower foundation, a top large-tonnage four-point suspension mechanism, and a top auxiliary traveling hoist mechanism. The construction and implementation of the three-column steel structure vibration tower provided by the embodiment of the present invention does not require a dedicated high-rise building factory. Each component is modularly designed, and the load-bearing components are made of steel structure assembly weldments. Each load-bearing component is connected by bolts, which facilitates the adjustment of the tower space size according to the size specifications of different rockets. It has the ability to resist natural disasters such as wind resistance, rain resistance, and earthquake resistance. It has the characteristics of a relatively short construction period, low cost, and easy expansion. It can be used for full-arrow modal testing of large rockets.

[0054] like Figure 2 and Figure 3 As shown, the top auxiliary hoisting mechanism 7 in the embodiment of the present invention includes a cantilever beam fixedly connected to the bottom of the top frame beam 1 and located at the center axis position of two auxiliary bearing columns, a crane movably arranged on the cantilever beam, and a winch connected to the crane; wherein the cantilever beam is installed at the bottom of the top frame beam 1 with high-strength bolts.

[0055] In one implementation of an embodiment of the present invention, multiple sets of ground anchor bolts are pre-embedded in the tower foundation 12 according to the size requirements of different launch vehicle vibration test missions; accordingly, the three load-bearing columns are set up on the tower foundation 12 by selecting the ground anchor bolts at corresponding positions in the tower foundation 12 according to the size of the mission object for connection, so as to ensure that the rocket inlet and outlet span and the internal span of the vibration tower are larger than the diameter of the rocket body.

[0056] In one implementation of the present invention, the three supporting columns are all modular in design, and each supporting column comprises: a plurality of standard section modules a that are vertically rigidly spliced. Figure 4 As shown, Figure 1 The illustrated embodiment provides a structural schematic diagram of a standard section module of a load-bearing column in a three-column steel structure vibration tower for full-arrow modal testing of a large rocket. Figure 4Each standard section module a includes a standard section frame 16, a ladder 13 arranged inside the standard section frame 16, and a turning design is performed on the ladders between the connected sections. It is also equipped with ladder handrails 14 and platform guardrails 15 to ensure the safety of personnel when working at high places in the vibration tower.

[0057] In this implementation, the height of a single standard section module a generally does not exceed 10 meters, which is convenient for transportation and installation. Each standard section frame 16 is a steel structure welded assembly, and the external contour and size of each standard section module are the same. The flatness error of the joint surface after welding is within ±0.1mm.

[0058] The following describes the longitudinal connection method and transverse connection structure of the standard section module a in the load-bearing column:

[0059] (a) Standard segment modules a within the same load-bearing column are connected using high-strength bolts. These bolts must pass load-bearing verification to ensure that the connection stiffness and strength meet requirements. Furthermore, the overall height of the vibration tower can be adjusted by using different numbers of standard segment modules a to accommodate full-rocket modal testing of rockets of varying lengths.

[0060] (b) The connection structure between the three load-bearing columns located on the same floor of the standard section module a:

[0061] Reference Figures 1 to 3 The connection structure shown has the following situations:

[0062] b1) The main supporting column 2 and the top standard section module of each auxiliary supporting column are fixedly connected by four transverse reinforcing beams 3. The connection method is high-strength bolts to ensure the transverse connection stiffness of the top of the vibration tower;

[0063] b2) The top standard section modules of the two auxiliary bearing columns are fixedly connected by a transverse reinforcement frame beam 9; the connection method is high-strength bolts to ensure the transverse connection stiffness of the top of the vibration tower;

[0064] b3) The main load-bearing column 2 and the non-top standard section module on the same floor of each auxiliary load-bearing column are fixedly connected by three transverse reinforcing beams 3 and one transverse functional frame beam 4. The connection method is high-strength bolts to ensure the transverse connection stiffness of the vibration tower;

[0065] b4) The non-top standard section modules of the same layer of the two auxiliary bearing columns are fixedly connected by a transverse reinforcement frame beam 9. The installation position of the transverse reinforcement frame beam 9 is flush with the transverse functional frame beam 4 of the standard section module a of the same layer. The connection method is high-strength bolts to ensure the transverse connection stiffness of the vibration tower.

[0066] It should be noted that the top standard section modules of the three load-bearing columns are special layers of the main structure and do not require transverse functional frame beams 4 . The transverse connection structures of the standard section modules of the remaining layers are the same.

[0067] In the specific implementation of the embodiment of the present invention, a walking passage 17 is provided inside the transverse functional frame beam 4 to facilitate the test personnel to arrange sensors and exciters during the test process. Figure 5 for Figure 1 The illustrated embodiment provides a structural schematic diagram of a transverse functional frame beam walking passage in a three-column steel structure vibration tower for full-arrow modal testing of large rockets. To facilitate rapid disassembly and reinstallation of the rocket after it enters the tower, the transverse reinforcement frame beam 9 is designed without a walkway, and the transverse reinforcement frame beam 9 and the transverse functional frame beam 4 are designed with equal stiffness to ensure the overall stiffness coordination of the three-column tower.

[0068] In one implementation of the present invention, the three-column steel structure vibration tower may further include a liftable rainproof canvas 5. The rainproof canvas is used to laterally enclose the vibration tower frame, thereby providing lateral enclosure for the tower frame and protecting test pieces and test equipment from rain during outdoor tests in rainy weather.

[0069] The laying position of the liftable rainproof canvas 5 is as follows: Figure 1 and Figure 2 As shown, in a specific implementation, a 2.5m high rainproof cloth mounting rack is installed on the outer side of the bottom of the three supporting columns. The rainproof cloth mounting rack is used to arrange the liftable rainproof canvas 5 around the circumference of the three-column steel structure vibration tower. When it is rainless, the liftable rainproof canvas 5 is folded and placed on the rainproof cloth mounting rack to form a space for workers to enter and exit the vibration tower. In addition, a traction motor (not shown in the figure) is installed on the top of each of the three supporting columns to pull up or lower the liftable rainproof canvas 5.

[0070] In one implementation of an embodiment of the present invention, the three-column steel structure vibration tower is also equipped with an internal lighting system, a video monitoring system and other supporting functional accessories. These supporting functional accessories are installed on the vibration tower's bearing columns and the top frame beams. The internal lighting system mainly achieves lighting reinforcement in the insufficiently lit areas inside the tower by enhancing the light source, and lighting work during night tests. The video monitoring system is used to capture real-time images of the implementation of the rocket's full-arrow modal test.

[0071] Although the embodiments disclosed herein are as described above, the contents are merely provided to facilitate understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art may make any modifications and variations in the form and details of the embodiments without departing from the spirit and scope of the present invention. However, the scope of patent protection of the present invention shall remain subject to the scope defined by the appended claims.

Claims

1. A three-column steel structure vibration tower for full-arrow modal testing of large rockets, characterized in that: Comprising: A top frame beam (1), three supporting columns, a lateral strengthening beam (3), a lateral functional frame beam (4), a top large-tonnage multi-point suspension mechanism (6), a top auxiliary gantry crane mechanism (7), a lateral strengthening frame beam (9), and a tower foundation (12); Among them, the three supporting columns include a main supporting column (2) and two auxiliary supporting columns. The three supporting columns are fixedly installed on the tower foundation (12), and the three supporting columns are evenly arranged at 120° to each other. The inlet and outlet of the rocket (11) are between the two auxiliary supporting columns, and the span of the inlet and outlet needs to be greater than the diameter of the rocket body of the rocket (11); The main supporting column (2) and each auxiliary supporting column are rigidly connected by a plurality of lateral strengthening beam (3) and lateral functional frame beam (4), and the two auxiliary supporting columns are rigidly connected by a plurality of lateral strengthening beam (3) and lateral strengthening frame beam (9); The top frame beam (1) is set as a "且”-shaped frame beam structure and is fixedly connected to the tops of the three supporting columns. The upper surface of the top frame beam (1) is covered with a rigid light-transmitting plate; The top large-tonnage multi-point suspension mechanism (6) adopts a modular structure, and each suspension mechanism is fixedly installed on the top frame beam (1); The top large-tonnage multi-point suspension mechanism (6) is used for lifting the rocket and simulating the free-free boundary of the full-rocket modal test; On one side of the inlet and outlet of the rocket, a top auxiliary gantry crane mechanism (7) is fixedly installed at the top of the three-column steel structure vibration tower. The top auxiliary gantry crane mechanism (7) includes a cantilever beam fixedly connected to the bottom of the top frame beam (1) and located at the central axis position of the two auxiliary supporting columns, a traveling crane movably arranged on the cantilever beam, and a winch connected to the traveling crane; The top auxiliary gantry crane mechanism (7) is used for assisting in lifting the sub-stage rocket body in the empty box state into the vibration tower before the full-rocket modal test of the rocket.

2. The three-column steel structure vibration tower for the full-rocket modal test of a large rocket according to claim 1, wherein Multiple groups of anchor bolts are embedded in the tower foundation (12), which are embedded according to the size requirements of different carrier rocket vibration test tasks; The installation positions of the three supporting columns on the tower foundation (12) are to select the corresponding anchor bolts in the tower foundation (12) according to the size of the mission object for connection.

3. The three-column steel structure vibration tower for the full-rocket modal test of a large rocket according to claim 1, wherein Each of the supporting columns adopts a modular structure, including: a plurality of standard section modules (a) vertically rigidly spliced; The external contours and sizes of each standard section module (a) are the same; Among them, each standard section module (a) includes a standard section frame (16), a ladder (13), a ladder handrail (14), and a platform guardrail (15) arranged inside the standard section frame (16); The standard section frame (16) is set as a steel structure welded assembly.

4. The three-column steel structure vibration tower for the full-rocket modal test of a large rocket according to claim 3, wherein Two adjacent standard section modules (a) are connected by high-strength bolts, and the connecting bolts used to connect the modules are load-bearing tested to ensure that the connection stiffness and strength meet the design requirements; The total height of the three-column steel structure vibration tower is adjusted by adjusting the number of standard section modules (a). The number of standard section modules (a) used is determined according to the size requirements of the test piece.

5. The three-column steel structure vibration tower for large rocket full-arrow modal test according to claim 3 is characterized in that: The main load-bearing column (2) and the top standard section module of each auxiliary load-bearing column are fixedly connected by four transverse reinforcing beams (3); The top standard section modules of the two auxiliary bearing columns are fixedly connected by a transverse reinforcement frame beam (9).

6. The three-column steel structure vibration tower for large rocket full-arrow modal test according to claim 3 is characterized in that: The main load-bearing column (2) and the non-top standard section module of the same layer of each auxiliary load-bearing column are fixedly connected by three transverse reinforcing beams (3) and one transverse functional frame beam (4); The non-top standard section modules of the same layer of the two auxiliary bearing columns are fixedly connected by a transverse reinforcement frame beam (9), and the installation position of the transverse reinforcement frame beam (9) is flush with the position of the transverse functional frame beam (4) of the standard section module (a) of the same layer.

7. The three-column steel structure vibration tower for large rocket full-arrow modal test according to any one of claims 1 to 6, characterized in that: A walking passage (17) is provided inside the transverse functional frame beam (4), and the transverse reinforcement frame beam (9) is provided as a walkway-free structure, so that the transverse reinforcement frame beam (9) can be quickly disassembled and reinstalled after the rocket enters the tower; The transverse functional frame beam (4) and the transverse reinforcement frame beam (9) are configured as equal-rigidity structures, so that the overall rigidity of the three-column steel structure vibration tower is balanced.

8. The three-column steel structure vibration tower for large rocket full-arrow modal test according to any one of claims 1 to 6, characterized in that: Also includes: Liftable rainproof canvas (5); A rainproof cloth placement rack is provided on the outer sides of the bottoms of the three supporting columns, and a liftable rainproof canvas (5) is arranged around the circumference of the three-column steel structure vibration tower through the rainproof cloth placement rack. When there is no rain, the liftable rainproof canvas (5) is folded and placed on the rainproof cloth placement rack to form a space for workers to enter and exit the vibration tower; A traction motor is installed on the top of each of the three supporting columns, and is used to pull up or lower the liftable rainproof canvas (5) through the three traction motors.

9. The three-column steel structure vibration tower for large rocket full-arrow modal test according to any one of claims 1 to 6, characterized in that: Also includes: Internal lighting system, video surveillance system; The internal lighting system and the video monitoring system are respectively installed on the three supporting columns and the top frame beam (1).

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