Assembly platform telescopic mechanism

Abstract

The present invention provides a telescopic mechanism for an assembly platform, which belongs to the field of ground test of spacecraft, and includes a telescopic component and a flip component. The telescopic component is fixed on the platform frame, and the flip component is installed at the output end of the telescopic component. The telescopic component includes an outer frame, an inner frame, a fixed block, a gear and a rack. The flip component includes a front sealing plate, an adaptable frame, a flap, a first docking block, a connecting hook and a second docking block. The limiter component includes a first limiter block, a second limiter block and a limiter pin. The present invention adds a degree of freedom of translation, improves the fault tolerance of the assembly platform, and increases the adaptability of the platform size. A set of platforms can meet the assembly and testing of two or even more types of spacecraft, and can more effectively perform assembly and testing work on spacecraft.

Description

Technical Field

[0001] The invention belongs to the field of ground test of spacecraft and relates to a telescopic mechanism of an assembly platform. Background Art

[0002] With the rapid development of my country's aerospace industry, the demand for assembly and testing of large and medium-sized spacecraft is getting higher and higher. The assembly platform is an indispensable ground tooling equipment in the assembly and testing process of manned spacecraft. It is used for the vertical hoisting and docking of various compartments of the spacecraft, the assembly of the entire spacecraft in a vertical parking state, the entry and exit of personnel, and the laying and installation of cables, pipelines, and test equipment during comprehensive electrical performance testing. It needs to meet the assembly and testing requirements of the entire spacecraft being hoisted in and out of the platform in a vertical state and the overall lifting of the bottom of the return capsule of the entire spacecraft.

[0003] With the continuous improvement of the requirements for spacecraft assembly and testing, higher requirements are placed on the supporting equipment during assembly and testing. During the assembly and testing of spacecraft, although the ordinary assembly platform can meet the normal use of the spacecraft, there are still problems. The existing assembly platform has a simple and intuitive structure. Although it can meet the current spacecraft assembly and testing needs, it has poor fault tolerance. If there is a problem with a certain envelope size, it will affect the entire assembly, testing process or production cycle. Moreover, the current assembly platform basically adopts a dedicated device to meet the assembly and testing of specific spacecraft. It has poor dimensional adaptability and poor versatility, which not only causes waste of cost and time, but also wastes manpower and material resources. It does not meet the current development needs of the aerospace industry. Summary of the invention

[0004] The problem to be solved by the present invention is the telescopic mechanism of the final assembly platform, which belongs to the field of ground test of spacecraft. It adds a degree of freedom of translation, improves the fault tolerance of the final assembly platform, and increases the adaptability of the platform size. A set of platforms can meet the final assembly and testing of two or even more types of spacecraft, and can perform final assembly and testing of spacecraft more effectively.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a telescopic mechanism of an assembly platform belongs to the field of ground test of spacecraft, and includes a telescopic component and a flip component. The telescopic component is fixed on the platform frame, and the flip component is installed at the output end of the telescopic component. The telescopic component includes an outer frame, an inner frame, a fixed block, a gear and a rack. The outer frame is fixed on the platform frame, and the fixed block is installed on the outer frame. The gear is vertically fixed on the upper surface of the fixed block, and the rack is fixed on the inner side of the inner frame. The rack and the gear are meshed. The flip component includes a front sealing plate, an adaptation frame, a flap, a first docking block, a connecting hook and a second docking block. The front sealing plate is fixed on one end of the inner frame, and the adaptation frame and the front sealing plate are rotatably connected. The flap is installed on the upper surface of the adaptation frame, the first docking block is installed on the side of the adaptation frame, and the connecting hook is rotatably connected to the first docking block. The second docking block is fixed on the platform frame, and the second docking block is rotatably connected to an end of the connecting hook away from the first docking block.

[0006] Furthermore, the adaptable frame and the front cover plate are connected by a hinge.

[0007] Furthermore, a square hole is provided at the upper end of the gear.

[0008] Furthermore, it also includes guide rails and guide wheels. There are two guide rails, which are fixed at both ends of the outer frame. The guide wheels are installed on both sides of the inner frame, and the guide wheels are inside the guide rails.

[0009] Furthermore, it also includes a limit assembly, which includes a first limit block, a second limit block and a limit pin, the first limit block is fixed to the upper end of the inner frame, the first limit block has a first limit groove, the second limit block is vertically fixed to the upper surface of the fixed block, the second limit block has a second limit groove, and the limit pin passes through the first limit groove and the second limit groove.

[0010] Furthermore, there are two first limiting blocks, which are respectively fixed on two sides of the upper end of the inner frame, and the two first limiting blocks are in opposite directions and the openings of the first limiting grooves are opposite to each other.

[0011] Furthermore, the first limiting groove is U-shaped, the second limiting block has a horizontal through hole, the limiting pin has a horizontal hole, the top screw is installed on the second limiting block and the limiting pin, and the top screw passes through the through hole and the hole.

[0012] Furthermore, it also includes positioning blocks and protrusions, the positioning blocks are fixed on both sides of the outer frame, the protrusions are fixed on the inner frame, and the positioning blocks and the protrusions are on the same horizontal plane.

[0013] Furthermore, the outer frame, the inner frame, the second limit block, the connecting hook, the gear and the rack are made of steel.

[0014] Compared with the prior art, the present invention has the following advantages and positive effects:

[0015] 1. The present invention adds a translational degree of freedom, improves the fault tolerance of the assembly platform, and increases the adaptability of the platform size. A set of platforms can meet the assembly and testing of two or even more types of spacecraft, and can more effectively assemble and test spacecraft.

[0016] 2. The adaptable frame and the front sealing plate of the present invention are connected by hinges, which are strong and durable and easy to install and maintain.

[0017] 3. The upper end of the gear of the present invention is provided with a square hole, and the square hole can be connected with a tool for manual or automatic operation, which meets various usage needs and is more convenient to operate.

[0018] 4. The guide rails of the present invention are fixed at both ends of the outer frame. There are two guide rails. The inner side of the guide rails is machined to ensure accuracy and ensure the stability of the inner frame during movement. The guide wheels are installed on both sides of the inner frame. The guide wheels are inside the guide rails. The guide wheels and guide rails cooperate for movement and guidance. The guide wheels need to be debugged before installation to ensure the stability of the inner frame during movement.

[0019] 5. The present invention has two first limit blocks, which are respectively fixed on both sides of the upper end of the inner frame. The two first limit blocks are in opposite directions and the openings of the first limit grooves are opposite. After the limit pin is inserted, the inner frame will not move forward any further, thereby ensuring the safety of the telescopic assembly.

[0020] 6. The positioning block of the present invention is welded and fixed on both sides of the outer frame, and the protrusion is fixed on the inner frame. The positioning block and the protrusion are on the same horizontal plane. When the positioning block and the protrusion are in contact, it is the limit state of the movement of the inner frame. At this time, the flap is in a horizontal direction and the inner frame will not continue to move forward, thereby ensuring the usability and installation.

[0021] 7. The outer frame and inner frame of the present invention are preferably welded with channel steel, and machining is used to ensure the docking accuracy, which reduces the weight while also ensuring the strength of the structure. The material of the connecting hook is preferably stainless acid-resistant steel, which is more wear-resistant, rust-resistant and corrosion-resistant. The material of the connecting hook, gear and rack is preferably No. 45 steel, which has high strength and strong deformation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a top view schematic diagram of the telescopic mechanism of the general assembly platform of the present invention;

[0024] Figure 2 It is a top view of the telescopic assembly and the flip assembly of the telescopic mechanism of the assembly platform of the present invention;

[0025] Figure 3 It is the telescopic mechanism of the assembly platform of the present invention. Figure 2 Sectional view at the AA position;

[0026] Figure 4 It is a front view of the telescopic assembly and the flip assembly of the telescopic mechanism of the assembly platform of the present invention.

[0027] Reference numerals:

[0028] 1. Platform frame; 2. Telescopic assembly; 3. Flip assembly; 4. Limit assembly; 21. Outer frame; 22. Inner frame; 23. Fixed block; 24. Gear; 25. Rack; 26. Guide rail; 27. Guide wheel; 28. Positioning block; 31. Front cover plate; 32. Adaptive frame; 33. Flip plate; 34. First docking block; 35. Connecting hook; 36. Second docking block; 41. First limit block; 42. First limit groove; 43. Second limit block; 44. Second limit groove; 45. Through hole; 46. Limit pin; 47. Hole; 48. Top screw; 241. Square hole. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 4 As shown, the present invention is a telescopic mechanism for an assembly platform, which belongs to the field of ground test of spacecraft, and includes a telescopic component 2 and a flip component 3. The telescopic component 2 is fixed on a platform frame 1, and the flip component 3 is installed at the output end of the telescopic component 2. The telescopic component 2 includes an outer frame 21, an inner frame 22, a fixing block 23, a gear 24 and a rack 25. A connecting hole is arranged on the outer frame 21, and screws pass through the connecting hole to fix the outer frame 21 on the platform frame 1. The fixing block 23 is installed on the outer frame 21, and the gear 24 is vertically fixed on the upper surface of the fixing block 23. The rack 25 is fixed to the inner side of the inner frame 22 by screws, and the rack 25 and the gear 24 are meshed. The flip component 3 includes a front sealing plate 31, an adaptable frame 32, a flap 33, a first docking block 34, a connecting hook 35 and a second docking block 36. The front sealing plate 31 is welded and fixed to one side of the inner frame 22. The adaptable frame 32 is a hollow structure, which reduces the weight. The flap 33 is installed on the upper surface of the adaptable frame 32, which ensures the aesthetics of the telescopic mechanism while blocking pollutants that may enter the telescopic mechanism. The rotation angle of the adaptable frame 32 and the flap 33 relative to the front cover 31 is 0°~90°. The first docking block 34 is installed on the side of the adaptable frame 32, and the connecting hook 35 is rotatably connected to the first docking block 34. The outer size of the connecting hook 35 depends on the positional relationship between the adaptable frame 32 and the platform frame 1. When the telescopic mechanism moves, the adaptable frame 32 does not interfere with the platform structure. The second docking block 36 is fixed on the platform frame 1, and the second docking block 36 and the connecting hook 35 are rotatably connected at one end away from the first docking block 34.

[0034] Preferably, the adaptable frame 32 and the front sealing plate 31 are connected by hinges, which are strong and durable and easy to install and maintain.

[0035] Preferably, a square hole 241 is provided at the upper end of the gear 24, and the square hole 241 can be connected to a tool for manual or automatic operation, thereby meeting various usage requirements and making the operation more convenient.

[0036] Preferably, the guide rails 26 are fixed at both ends of the outer frame 21. There are two guide rails 26. The inner side of the guide rails 26 is machined to ensure accuracy, thereby ensuring the stability of the inner frame 22 during movement. The guide wheels 27 are installed on both sides of the inner frame 22. The guide wheels 27 are inside the guide rails 26. The guide wheels 27 and the guide rails 26 cooperate for movement and guidance. The guide wheels 27 need to be debugged before installation to ensure the stability of the inner frame 22 during movement.

[0037] Preferably, the limit assembly 4 includes a first limit block 41, a second limit block 43 and a limit pin 46, the first limit block 41 is fixed to the upper end of the inner frame 22, the first limit block 41 has a first limit groove 42, the second limit block 43 is vertically fixed to the upper surface of the fixed block 23, the second limit block 43 has a second limit groove 44, and the limit pin 46 passes through the first limit groove 42 and the second limit groove 44.

[0038] Preferably, there are two first limit blocks 41, which are fixed on both sides of the upper end of the inner frame 22 respectively. The two first limit blocks 41 are in opposite directions and the openings of the first limit grooves 42 are opposite to each other. After the limit pin 46 is inserted, the inner frame 22 will not move forward any further, thereby ensuring the safety of the telescopic assembly 2.

[0039] Preferably, the first limiting groove 42 is U-shaped, which is convenient for inserting the limiting pin 46 for limiting. The second limiting block 43 has a horizontally penetrating through hole 45, and the limiting pin 46 has a horizontal hole 47. The top screw 48 is installed on the second limiting block 43 and the limiting pin 46. The top screw 48 passes through the through hole 45 and the hole 47 to fix the limiting pin 46 and the second limiting block 43 together.

[0040] Preferably, the positioning block 28 is welded and fixed on both sides of the outer frame 21, and the protrusion is fixed on the inner frame 22. The positioning block 28 and the protrusion are on the same horizontal plane. When the positioning block 28 and the protrusion are in contact, it is the extreme state of the movement of the inner frame 22. At this time, the flap 33 is in a horizontal direction, and the inner frame 22 will not continue to move forward, thereby ensuring ease of use and installation.

[0041] Preferably, the outer frame 21, the inner frame 22, the second limit block 43, the connecting hook 35, the gear 24 and the rack 25 are made of steel. The outer frame 21 and the inner frame 22 are preferably welded with channel steel, and the docking accuracy is ensured by machining, which reduces the weight while also ensuring the strength of the structure. The material of the connecting hook 35 is preferably stainless acid-resistant steel, which is more wear-resistant, rust-resistant and corrosion-resistant. The material of the connecting hook 35, the gear 24 and the rack 25 is preferably 45 steel, which has high strength and strong deformation resistance.

[0042] In actual operation, when the telescopic mechanism is in the retracted state, the inner frame 22 is retracted into the outer frame 21. At this time, the adaptation frame 32 and the flap 33 are in a vertical state. A tool is used to connect with the square hole 241, and the gear 24 is moved along the rack 25 manually or by using an output device such as a motor. In order to ensure that the gear 24 and the rack 25 are fully engaged and rotate flexibly, the position of the gear 24 is reasonably adjusted during installation, and then positioned. In order to ensure the stability of the movement of the inner frame 22, the installation surface of the rack 25 needs to be finely processed. The guide wheels 27 at both ends of the inner frame 22 move in the guide rails 26, and the inner frame 22 gradually extends out of the outer frame 21. The flap 33 is gradually flattened under the action of the connecting hook 35 and the hinge. When the positioning block 28 contacts the protrusion, the inner frame 2 2 movement stops. This is the limit state of the movement of the inner frame 22. The adaptable frame 32 and the flap 33 are in a horizontal state. In order to ensure that the telescopic mechanism stroke meets the requirements, the telescopic mechanism movement stroke should be debugged first, and then the positioning block 28 should be welded and installed. In order to ensure that the flap 33 is finally in a horizontal or vertical position, the installation position of the connecting hook 35 needs to be debugged first. After adjustment, the second docking block 36 is welded to the platform frame 1. At this time, the limit pin 46 is inserted into the first limit block 41 and the second limit block 43, and the limit pin 46 and the second limit block 43 are fixed together with the top screw 48. In order to ensure that the telescopic mechanism stroke meets the requirements, the telescopic mechanism movement stroke should be debugged first, and then the positions of the first limit block 41 and the second limit block 43 are determined.

[0043] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. The assembly platform telescopic mechanism is characterized by: The invention comprises a telescopic component (2) and a flip component (3), wherein the telescopic component (2) is fixed on a platform frame (1), and the flip component (3) is installed at the output end of the telescopic component (2). The telescopic component (2) comprises an outer frame (21), an inner frame (22), a fixed block (23), a gear (24) and a rack (25). The outer frame (21) is fixed on the platform frame (1), and the fixed block (23) is installed on the outer frame (21). The gear (24) is vertically fixed on the upper surface of the fixed block (23), and the rack (25) is fixed on the inner side of the inner frame (22). The rack (25) and the gear (24) are meshed. The flip component (3) comprises a front sealing plate. (31), an adaptable frame (32), a flap (33), a first docking block (34), a connecting hook (35) and a second docking block (36), the front sealing plate (31) is fixed to one end of the inner frame (22), the adaptable frame (32) and the front sealing plate (31) are rotatably connected, the flap (33) is installed on the upper surface of the adaptable frame (32), the first docking block (34) is installed on the side of the adaptable frame (32), the connecting hook (35) and the first docking block (34) are rotatably connected, the second docking block (36) is fixed on the platform frame (1), and the second docking block (36) and the connecting hook (35) are rotatably connected at one end away from the first docking block (34); The adaptable frame (32) and the front sealing plate (31) are connected by a hinge; The device also comprises a limiting assembly (4), the limiting assembly (4) comprising a first limiting block (41), a second limiting block (43) and a limiting pin (46), the first limiting block (41) being fixed to the upper end of the inner frame (22), the first limiting block (41) being provided with a first limiting groove (42), the second limiting block (43) being vertically fixed to the upper surface of the fixed block (23), the second limiting block (43) being provided with a second limiting groove (44), and the limiting pin (46) passing through the first limiting groove (42) and the second limiting groove (44); There are two first limit blocks (41), which are respectively fixed on two sides of the upper end of the inner frame (22), the two first limit blocks (41) are in opposite directions and the openings of the first limit slots (42) are opposite to each other; The first limiting groove (42) is in a U-shape, the second limiting block (43) is provided with a horizontally penetrating through hole (45), the limiting pin (46) is provided with a horizontally oriented hole (47), a top screw (48) is installed on the second limiting block (43) and the limiting pin (46), and the top screw (48) passes through the through hole (45) and the hole (47).

2. The assembly platform telescopic mechanism according to claim 1, characterized in that: The upper end of the gear (24) is provided with a square hole (241).

3. The assembly platform telescopic mechanism according to claim 1, characterized in that: It also includes guide rails (26) and guide wheels (27). There are two guide rails (26). The guide rails (26) are fixed at both ends of the outer frame (21). The guide wheels (27) are installed on both sides of the inner frame (22). The guide wheels (27) are inside the guide rails (26).

4. The assembly platform telescopic mechanism according to any one of claims 1 to 3, characterized in that: It also includes a positioning block (28) and a protrusion, wherein the positioning block (28) is fixed on both sides of the outer frame (21), and the protrusion is fixed on the inner frame (22), and the positioning block (28) and the protrusion are on the same horizontal plane.

5. The assembly platform telescopic mechanism according to any one of claims 1 to 3, characterized in that: The material of the outer frame (21), the inner frame (22), the second limit block (43), the connecting hook (35), the gear (24) and the rack (25) is steel.

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