Flexible assembly system for assembly of multi-variety and multi-section combination

Abstract

The invention belongs to the technical field of rocket engine assembly, and particularly relates to a flexible assembly system for multi-variety and multi-section combination assembly. Comprising a base, a lower clamping mechanism, a lower lifting mechanism, an upper lifting mechanism and an upper clamping mechanism, the lower clamping mechanism, the lower lifting mechanism, the upper lifting mechanism and the upper clamping mechanism are arranged on the base, the upper clamping mechanism and the lower clamping mechanism are arranged on the front side of the base from top to bottom and can move up and down, the upper lifting mechanism is connected with the upper clamping mechanism, and the lower lifting mechanism is connected with the lower clamping mechanism. The upper lifting mechanism is used for adjusting the height position of the upper clamping mechanism, and the lower lifting mechanism is used for adjusting the height position of the lower clamping mechanism, so that the distance between the upper clamping mechanism and the lower clamping mechanism is adjusted. According to the assembly system, the assembly operation requirements of existing four assemblies are met through one assembly system, the occupied area of assembly equipment is reduced, the assembly efficiency is improved, the assembly precision is improved, and the stability and safety in the assembly process are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of rocket engine assembly, and in particular relates to a flexible assembly system for assembling multi-variety and multi-section assemblies. Background Art

[0002] With the comprehensive development of space technology, aerospace telemetry, manned spaceflight, deep space exploration and other fields, the demand for launch vehicles has shown explosive growth. As the core of launch vehicles, the rocket engines that match them need to increase their production capacity urgently. As the core component of rocket engines, the multi-segment assembly equipped with rocket engines of different carrying capacity has similar structures, but there are differences in height. In the existing assembly mode, each assembly has a corresponding set of assembly tools. The assembly equipment occupies a large area, which greatly affects other assembly work spaces. In addition, the existing assembly tools have been used for a long time, and the assembly accuracy and equipment have aged. Now there is an urgent need for a new type of flexible assembly system that can realize the assembly of multi-variety multi-segment assembly products. The assembly operation requirements of the existing four assemblies can be realized through a set of assembly systems, reducing the area occupied by assembly equipment, improving assembly efficiency, and ensuring stability and safety during the assembly process. Summary of the invention

[0003] In view of the above problems, the present invention aims to provide a flexible assembly system for assembling multi-variety and multi-segment assemblies, which can meet the assembly operation requirements of the existing four assemblies through a set of assembly systems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a flexible assembly system for assembling multi-variety and multi-section assemblies, comprising a base and a lower clamping mechanism, a lower lifting mechanism, an upper lifting mechanism and an upper clamping mechanism arranged on the base, wherein the upper clamping mechanism and the lower clamping mechanism are arranged on the front side of the base from top to bottom and can move up and down, the upper lifting mechanism is connected to the upper clamping mechanism, and the lower lifting mechanism is connected to the lower clamping mechanism, the upper lifting mechanism is used to adjust the height position of the upper clamping mechanism, and the lower lifting mechanism is used to adjust the height position of the lower clamping mechanism, thereby realizing the adjustment of the spacing between the upper clamping mechanism and the lower clamping mechanism.

[0006] The base includes a bottom plate, a support seat, a back plate and a lifting guide assembly, wherein the support seat is installed on the upper part of the bottom plate through a rotating bearing, the back plate is connected to the rear end of the bottom plate and is perpendicular to the bottom plate, the lifting guide assembly is arranged on the back plate and is connected to the upper clamping mechanism and the lower clamping mechanism, and the lifting guide assembly is used to guide the lifting and lowering of the upper clamping mechanism and the lower clamping mechanism.

[0007] The lifting guide assembly includes a lifting linear guide rail and two sets of lifting slide blocks slidably matched with the lifting linear guide rail, wherein the lifting linear guide rail is arranged on the front side of the back plate along the vertical direction, and the two sets of lifting slide blocks are respectively connected to the upper clamping mechanism and the lower clamping mechanism.

[0008] The upper clamping mechanism and the lower clamping mechanism have the same structure, and both include a lifting back plate, a horizontal guide assembly, a left clamp, a left floating clamp block, a right clamp and a right floating clamp block, wherein the lifting back plate is connected to the lifting guide assembly, the horizontal guide assembly is arranged on the lifting back plate and is connected to the left clamp and the right clamp, the horizontal guide assembly is used to guide the horizontal movement of the left clamp and the right clamp, the left floating clamp block and the right floating clamp block are respectively arranged on the opposite surfaces of the left clamp and the right clamp, and are used for clamping the workpiece.

[0009] The left floating clamping block and the right floating clamping block have the same structure, both comprising a clamping seat, a rotating shaft and a clamping block, wherein the clamping seat is fixedly connected to the left clamping jaw or the right clamping jaw, the clamping block is rotatably connected to the clamping seat via the rotating shaft, and the working surface of the clamping block is a concave arc structure.

[0010] The horizontal guide assembly includes a horizontal linear guide rail and two groups of horizontal sliders that slide with the horizontal linear guide rail, wherein the horizontal linear guide rail is arranged on the back plate along the horizontal direction, and limit blocks are provided at both ends of the horizontal linear guide rail, and the two groups of horizontal sliders are respectively connected to the left clamp and the right clamp.

[0011] The lower lifting mechanism and the upper lifting mechanism have the same structure, and both include a driving assembly, a screw lift, a lifting connecting plate and a nut, wherein the driving assembly and the screw lift are arranged on the back of the base, and the driving assembly is connected to the screw lift, and the driving assembly is used to drive the screw lift to rotate; the nut is threadedly matched with the screw lift, and the nut is connected to the lifting connecting plate, and the lifting connecting plate is used to connect to the upper clamping mechanism or the lower clamping mechanism.

[0012] The driving assembly includes a hand wheel, a coupling I, a reducer and a coupling II, wherein the reducer is arranged on the base, and the input end is connected to the hand wheel through the coupling I, the hand wheel is connected to the base through the square seat bearing I, and the output end of the reducer is connected to the screw lifter through the coupling II.

[0013] The advantages and beneficial effects of the present invention are as follows: the present invention provides a flexible assembly system for assembling multi-variety and multi-section assemblies, which can realize the assembly operation requirements of the existing four assemblies through a set of assembly systems, reduce the floor space occupied by assembly equipment, improve assembly efficiency, improve assembly accuracy, and ensure stability and safety during the assembly process.

[0014] The present invention has a simple structure, has no redundant structure while achieving the required functions, and fully optimizes the structural design; at the same time, under the condition of meeting the process requirements and mechanical properties, it avoids unnecessary design, integrates multiple functions into one mechanism as much as possible, and reduces the production cost as much as possible.

[0015] The present invention can realize the fixing and installation of the segmented assembly through manual operation, has simple and convenient operation, high assembly efficiency and large assembly space.

[0016] The present invention can respectively realize the positioning and clamping of the flange connection surfaces of the assembly at different heights through two groups of lifting mechanisms and clamping mechanisms that are symmetrically distributed up and down, thereby achieving stable clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a flexible assembly system for assembling multi-variety and multi-section assemblies according to the present invention;

[0018] Figure 2 for Figure 1 Left view of

[0019] Figure 3 It is a structural schematic diagram of the base in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the upper and lower clamping mechanisms in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the upper and lower lifting mechanisms in the present invention;

[0022] Figure 6 The following are structural and height difference diagrams of four assembly products targeted by the present invention.

[0023] In the figure: 1 is a base, 2 is a lower clamping mechanism, 3 is a lower lifting mechanism, 4 is an upper lifting mechanism, 5 is an upper clamping mechanism, 6 is a bottom plate, 7 is a rotating bearing, 8 is a support seat, 9 is a back plate, 10 is a lifting linear guide, 11 is a lifting slider, 12 is a lifting back plate, 13 is a horizontal linear guide, 14 is a horizontal slider, 15 is a left clamping jaw, 16 is a left clamping seat, 17 is a left rotating shaft, 18 is a left clamping block, 19 is a right clamping jaw, 20 is a right clamping seat, 21 is a right rotating shaft, 22 is a right clamping block, 23 is a limit block, 24 is a hand wheel, 25 is a square seat bearing I, 26 is a coupling I, 27 is a left support plate, 28 is a reducer, 29 is a right support plate, 30 is a coupling II, 31 is a screw lift, 32 is a lifting connecting plate, 33 is a transition plate, 34 is a nut, and 35 is a square seat bearing II. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 , Figure 2 As shown, the present invention provides a flexible assembly system for assembling multi-variety and multi-section assemblies, including a base 1 and a lower clamping mechanism 2, a lower lifting mechanism 3, an upper lifting mechanism 4 and an upper clamping mechanism 5 arranged on the base 1, wherein the upper clamping mechanism 5 and the lower clamping mechanism 2 are arranged on the front side of the base 1 from top to bottom, and both can move up and down, the upper lifting mechanism 4 is connected to the upper clamping mechanism 5, and the lower lifting mechanism 3 is connected to the lower clamping mechanism 2, the upper lifting mechanism 4 is used to adjust the height position of the upper clamping mechanism 5, and the lower lifting mechanism 3 is used to adjust the height position of the lower clamping mechanism 2, thereby realizing the adjustment of the spacing between the upper clamping mechanism 5 and the lower clamping mechanism 2.

[0026] like Figure 3 As shown, in an embodiment of the present invention, the base 1 includes a bottom plate 6, a support seat 8, a back plate 9 and a lifting guide assembly, wherein the support seat 8 is installed on the upper part of the bottom plate 6 through a rotating bearing 7, the back plate 9 is connected to the rear end of the bottom plate 6 and is perpendicular to the bottom plate 6, the lifting guide assembly is arranged on the back plate 9 and is connected to the upper clamping mechanism 5 and the lower clamping mechanism 2, and the lifting guide assembly is used to guide the lifting and lowering of the upper clamping mechanism 5 and the lower clamping mechanism 2.

[0027] Specifically, the lifting guide assembly includes a lifting linear guide rail 10 and two groups of lifting sliders 11 that slide with the lifting linear guide rail 10. Two lifting linear guide rails 10 parallel to each other are arranged on the front of the back plate 9 in the vertical direction. The two groups of lifting sliders 11 are respectively connected to the upper clamping mechanism 5 and the lower clamping mechanism 2.

[0028] like Figure 4 As shown, in the embodiment of the present invention, the upper clamping mechanism 5 and the lower clamping mechanism 2 have the same structure, both of which include a lifting back plate 12, a horizontal guide assembly, a left clamping jaw 15, a left floating clamping block, a right clamping jaw 19 and a right floating clamping block, wherein the lifting back plate 12 is connected to the lifting guide assembly, the horizontal guide assembly is arranged on the lifting back plate 12, and is connected to the left clamping jaw 15 and the right clamping jaw 19, the horizontal guide assembly is used to guide the horizontal movement of the left clamping jaw 15 and the right clamping jaw 19, the left floating clamping block and the right floating clamping block are respectively arranged on the opposite surfaces of the left clamping jaw 15 and the right clamping jaw 19, and are used for clamping the workpiece.

[0029] In an embodiment of the present invention, the left floating clamping block and the right floating clamping block have the same structure, both comprising a clamping seat, a rotating shaft and a clamping block, wherein the clamping seat is fixedly connected to the left clamping jaw 15 or the right clamping jaw 19, the clamping block is rotatably connected to the clamping seat via the rotating shaft, and the working surface of the clamping block is a concave arc structure.

[0030] Specifically, the left floating clamping block includes a left clamping seat 16, a left rotating shaft 17 and a left clamping block 18, wherein the left clamping seat 16 is fixedly connected to the inner side of the left clamping jaw 15, and the rear end of the left clamping block 18 is rotatably connected to the left clamping seat 16 through the left rotating shaft 17. The right floating clamping block includes a right clamping seat 20, a right rotating shaft 21 and a right clamping block 22, wherein the right clamping seat 20 is fixedly connected to the inner side of the right clamping jaw 19, and the right clamping block 22 is rotatably connected to the right clamping seat 20 through the right rotating shaft 21. The opposite surfaces of the left clamping block 18 and the right clamping block 22 are both concave arc structures. The left clamping block 18 can rotate around the left rotating shaft 17, and the right clamping block 22 can rotate around the right rotating shaft 21, which can adapt to the position deviation after the product is positioned to a certain extent.

[0031] Specifically, the horizontal guide assembly includes a horizontal linear guide rail 13 and two groups of horizontal sliders 14 that slide with the horizontal linear guide rail 13, wherein the horizontal linear guide rail 13 is arranged on the back plate 12 along the horizontal direction, and limit blocks 23 are provided at both ends of the horizontal linear guide rail 13, and the two groups of horizontal sliders 14 are respectively connected to the left clamp 15 and the right clamp 19.

[0032] The left clamping block 18 and the right clamping block 22 above are driven to clamp the product from both sides by the manual opening and closing movement of the left clamping jaw 15 and the right clamping jaw 19, and the clamping jaws can be locked and limited by the manual locking wrench on the horizontal slider 14, which can fully limit the rotation of the assembly product around the vertical axis. At the same time, sufficient clamping force can be provided to offset the tightening torque generated during the bolt tightening process during the flange connection required by the segmented assembly method of the assembly, ensuring the stability during the assembly process. Two sets of limit blocks 23 are respectively installed at both ends of the lifting back plate 12 to limit the left and right movement of the clamping jaws to prevent them from falling off.

[0033] like Figure 5 As shown, in the embodiment of the present invention, the lower lifting mechanism 3 and the upper lifting mechanism 4 have the same structure, both of which include a driving assembly, a screw lift 31, a lifting connecting plate 32 and a nut 34, wherein the driving assembly and the screw lift 31 are arranged on the back of the base 1, and the driving assembly is connected to the screw lift 31, and the driving assembly is used to drive the screw lift 31 to rotate; the nut 34 is threadedly matched with the screw lift 31, and the nut 34 is connected to the lifting connecting plate 32 through a transition plate 33, and the lifting connecting plate 32 is used to connect with the upper clamping mechanism 5 or the lower clamping mechanism 2.

[0034] Specifically, the driving assembly includes a hand-cranked wheel 24, a coupling Ⅰ26, a reducer 28 and a coupling Ⅱ30, wherein the two ends of the reducer 28 are respectively connected to the back plate 9 through a left support plate 27 and a right support plate 29, the input end of the reducer 28 is connected to the hand-cranked wheel 24 through a coupling Ⅰ26, the hand-cranked wheel 24 is connected to the base 1 through a square seat bearing Ⅰ25, the output end of the reducer 28 is connected to the upper end of the screw lift 31 through a coupling Ⅱ30, and the lower end of the screw lift 31 is rotatably connected to the base 1 through a square seat bearing Ⅱ35.

[0035] By manually rotating the hand wheel 24, the hand wheel 24, supported by the square seat bearing Ⅰ25, transmits power to the screw lift 31 through the coupling Ⅰ26, the reducer 28 and the coupling Ⅱ30, and the power direction is converted by 90 degrees through the screw lift 31. The screw nut 34 is arranged on the output shaft of the screw lift 31, and the power input by the hand wheel 24 is converted to the screw nut 34 through the screw lift 31, and the rotational motion is converted into the vertical motion of the lifting connecting plate 32, thereby realizing the lifting and lowering adjustment of the lower clamping mechanism 2 or the upper clamping mechanism 5 in the height direction.

[0036] Figure 6 The structure and height difference diagram of the four assemblies of the present invention are as follows; Figure 6 As shown in the figure, the structures of these four assemblies are the same, and the main difference is that the height of the middle section is different, resulting in different overall heights of the assemblies. The assembly is divided into three sections: upper, middle and lower. The middle section and the lower section are connected by flange surfaces and bolts, and the upper section and the middle section are also connected by flange surfaces and bolts.

[0037] The present invention provides a flexible assembly system for assembling multiple varieties of multi-section assemblies. The same assembly system can be used to assemble four assemblies, and segmented clamping and fixing can be achieved during the assembly process. Sufficient clamping force can be provided to offset the tightening torque generated during the flange connection process and the bolt tightening process required for the segmented assembly of the assembly, thereby preventing the product from moving during the tightening of the bolts for the flange connection, ensuring stability and safety during the assembly process, and completely solving the existing assembly mode in which four assemblies are assembled separately using four sets of tooling. The floor space occupied by the assembly equipment is reduced, and the operation is fully manual and convenient. The assembly efficiency is improved to meet the assembly requirements of the four assemblies.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, expansion, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A flexible assembly system for assembling multi-variety and multi-segment assemblies, characterized in that: The invention comprises a base (1) and a lower clamping mechanism (2), a lower lifting mechanism (3), an upper lifting mechanism (4) and an upper clamping mechanism (5) arranged on the base (1), wherein the upper clamping mechanism (5) and the lower clamping mechanism (2) are arranged on the front side of the base (1) from top to bottom and can move up and down, the upper lifting mechanism (4) is connected to the upper clamping mechanism (5), and the lower lifting mechanism (3) is connected to the lower clamping mechanism (2), the upper lifting mechanism (4) is used to adjust the height position of the upper clamping mechanism (5), and the lower lifting mechanism (3) is used to adjust the height position of the lower clamping mechanism (2), thereby realizing the adjustment of the spacing between the upper clamping mechanism (5) and the lower clamping mechanism (2).

2. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 1 is characterized in that: The base (1) comprises a bottom plate (6), a support seat (8), a back plate (9) and a lifting guide assembly, wherein the support seat (8) is mounted on the upper part of the bottom plate (6) via a rotary bearing (7), the back plate (9) is connected to the rear end of the bottom plate (6) and is perpendicular to the bottom plate (6), the lifting guide assembly is arranged on the back plate (9) and is connected to the upper clamping mechanism (5) and the lower clamping mechanism (2), and the lifting guide assembly is used to guide the lifting of the upper clamping mechanism (5) and the lower clamping mechanism (2).

3. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 2 is characterized in that: The lifting guide assembly comprises a lifting linear guide rail (10) and two sets of lifting slide blocks (11) slidably matched with the lifting linear guide rail (10), wherein the lifting linear guide rail (10) is arranged on the front side of the back plate (9) along the vertical direction, and the two sets of lifting slide blocks (11) are respectively connected to the upper clamping mechanism (5) and the lower clamping mechanism (2).

4. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 2 is characterized in that: The upper clamping mechanism (5) and the lower clamping mechanism (2) have the same structure, and both include a lifting back plate (12), a horizontal guide assembly, a left clamping jaw (15), a left floating clamping block, a right clamping jaw (19) and a right floating clamping block, wherein the lifting back plate (12) is connected to the lifting guide assembly, the horizontal guide assembly is arranged on the lifting back plate (12) and is connected to the left clamping jaw (15) and the right clamping jaw (19), the horizontal guide assembly is used to guide the horizontal movement of the left clamping jaw (15) and the right clamping jaw (19), and the left floating clamping block and the right floating clamping block are respectively arranged on the opposite surfaces of the left clamping jaw (15) and the right clamping jaw (19) for clamping the workpiece.

5. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 4 is characterized in that: The left floating clamping block and the right floating clamping block have the same structure, both comprising a clamping seat, a rotating shaft and a clamping block, wherein the clamping seat is fixedly connected to the left clamping jaw (15) or the right clamping jaw (19), the clamping block is rotatably connected to the clamping seat via the rotating shaft, and the working surface of the clamping block is an inwardly concave arc structure.

6. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 4 is characterized in that: The horizontal guide assembly comprises a horizontal linear guide rail (13) and two groups of horizontal sliders (14) slidably matched with the horizontal linear guide rail (13), wherein the horizontal linear guide rail (13) is arranged on the back plate (12) along the horizontal direction, and limit blocks (23) are provided at both ends of the horizontal linear guide rail (13), and the two groups of horizontal sliders (14) are respectively connected to the left clamping jaw (15) and the right clamping jaw (19).

7. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 1 is characterized in that: The lower lifting mechanism (3) and the upper lifting mechanism (4) have the same structure, and both comprise a driving assembly, a screw lift (31), a lifting connection plate (32) and a nut (34), wherein the driving assembly and the screw lift (31) are arranged on the back side of the base (1), and the driving assembly is connected to the screw lift (31), and the driving assembly is used to drive the screw lift (31) to rotate; the nut (34) is threadedly matched with the screw lift (31), the nut (34) is connected to the lifting connection plate (32), and the lifting connection plate (32) is used to be connected to the upper clamping mechanism (5) or the lower clamping mechanism (2).

8. The flexible assembly system for assembling multi-variety and multi-section assemblies according to claim 7 is characterized in that: The driving assembly comprises a hand-cranked wheel (24), a coupling I (26), a reducer (28) and a coupling II (30), wherein the reducer (28) is arranged on the base (1), and the input end is connected to the hand-cranked wheel (24) through the coupling I (26), the hand-cranked wheel (24) is connected to the base (1) through the square seat bearing I (25), and the output end of the reducer (28) is connected to the screw lift (31) through the coupling II (30).

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