Multi-degree of freedom assembly tool

Abstract

The application discloses a multi-degree-of-freedom assembly tool, first and second two-way moving mechanisms are symmetrically arranged on the top of a lifting mechanism and are vertically arranged, first and second nozzle supports are arranged on the top of the first and second two-way moving mechanisms respectively, the top of the first nozzle support is detachably connected with a first nozzle turnover support in a rotatable mode, an angle adjusting mechanism for adjusting the angle of the first nozzle turnover support is arranged between the top of the first nozzle support and the first nozzle turnover support, the top of the second nozzle support is detachably connected with a second nozzle turnover support in a rotatable mode, an angle adjusting mechanism for adjusting the angle of the second nozzle turnover support is arranged between the top of the second nozzle support and the second nozzle turnover support, and the first and second nozzle turnover supports can clamp nozzles. The application can be used for multi-posture adjustment of nozzles during assembly on the ground or a vehicle platform, and is convenient for workers to assemble and disassemble nozzle components, so that the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical assembly, and particularly relates to a multi-degree-of-freedom assembly tool. BACKGROUND

[0002] At present, the assembly of an engine nozzle assembly is mostly performed by using a lifting appliance, that is, the nozzle assembly is first transported from a storage rack to an assembly station, and a special lifting appliance is transported to the assembly station, then a worker uses a plant crane and a special tool to lift, align and assemble the nozzle assembly; for an engine to be assembled horizontally, the nozzle needs to be flipped by 90 degrees in the air after being lifted by the lifting appliance; however, it is very difficult to disassemble and assemble the nozzle assembly in a limited space of a test bench, so it is urgent to design a tool capable of multi-pose adjustment to improve the on-site assembly efficiency and solve the problem of difficult assembly operation in a limited space. SUMMARY

[0003] To solve the problems in the prior art, the present application aims to provide a multi-degree-of-freedom assembly tool, which can be used for multi-pose adjustment of an engine tail nozzle during assembly on the ground or a test bench, and facilitates workers to assemble and disassemble the nozzle assembly, so as to improve the assembly efficiency.

[0004] The technical scheme adopted by the present application is as follows:

[0005] The multi-degree-of-freedom assembly tool comprises a lifting mechanism, a first bidirectional moving mechanism, a second bidirectional moving mechanism, a first nozzle support, a second nozzle support, a first nozzle flipping support and a second nozzle flipping support.

[0006] The first bidirectional moving mechanism and the second bidirectional moving mechanism are symmetrically arranged on the top of the lifting mechanism, and the first nozzle support and the second nozzle support are both vertically arranged, and the first nozzle support and the second nozzle support are arranged on the top of the first bidirectional moving mechanism and the top of the second bidirectional moving mechanism respectively; the first bidirectional moving mechanism can adjust the position of the first nozzle support in a certain horizontal plane, and the second bidirectional moving mechanism can adjust the position of the second nozzle support in a certain horizontal plane.

[0007] The top of the first nozzle support is detachably connected with the first nozzle flipping support in a rotatable manner, and an angle adjusting mechanism for adjusting the angle of the first nozzle flipping support is arranged between the top of the first nozzle support and the first nozzle flipping support; the top of the second nozzle support is detachably connected with the second nozzle flipping support in a rotatable manner, and an angle adjusting mechanism for adjusting the angle of the second nozzle flipping support is arranged between the top of the second nozzle support and the second nozzle flipping support.

[0008] The first nozzle flipping support and the second nozzle flipping support can clamp the nozzle.

[0009] Preferably, the lifting mechanism is movable.

[0010] Preferably, the lifting mechanism adopts a scissor type manual oil pressure lifting mechanism.

[0011] Preferably, the first and second bidirectional moving mechanisms are of the same structure, and each includes a front-back moving slide plate, a left-right moving slide plate, and a slide plate driving mechanism. The front-back moving slide plate is arranged on the lifting mechanism, and the lifting mechanism is provided with a slide plate driving mechanism for driving the front-back moving slide plate to move. The left-right moving slide plate is arranged on the front-back moving slide plate, and the front-back moving slide plate is provided with a slide plate driving mechanism for driving the left-right moving slide plate to move. The first or second nozzle support is arranged on the left-right moving slide plate.

[0012] The sliding direction of the front-back moving slide plate is parallel to the central axis of the nozzle, and the sliding direction of the left-right moving slide plate is perpendicular to the central axis of the nozzle.

[0013] Preferably, the slide plate driving mechanism adopts a screw nut mechanism, and one end of the screw rod of the screw nut mechanism is connected to an adjusting hand wheel.

[0014] Preferably, the first and second nozzle supports are connected as an integral structure through a cross beam, so that the first and second nozzle supports can move synchronously.

[0015] Preferably, the first and second nozzle overturn supports are of the same structure, and each includes an overturning disc, an overturning arm, a connecting seat, a positioning shaft, and a lifting plate. The positioning shaft is coaxially arranged on the axis of the overturning disc. The overturning disc is symmetrically provided with the overturning arm. One end of the overturning arm is connected to the overturning disc, and the other end of the overturning arm is provided with the connecting seat. The first and second nozzle overturn supports are detachably connected to the nozzle through the connecting seat. The positioning shaft is detachably and rotatably connected to the top of the first or second nozzle support. The axis of the positioning shaft is perpendicular to the axis of the nozzle. The lifting plate is sleeved on the positioning shaft and fixedly connected to the positioning shaft or the overturning disc. The top of the first and second nozzle supports is provided with an angle adjusting mechanism for driving the lifting plate to rotate around the positioning shaft.

[0016] Preferably, the top of the first and second nozzle supports is provided with a V-shaped support. The top of the V-shaped support is provided with a V-shaped groove for arranging the positioning shaft. The V-shaped groove is parallel to the axis of the positioning shaft. A threaded guide sleeve adjusting mechanism is arranged on the V-shaped support. The threaded guide sleeve adjusting mechanism includes an adjusting screw and a guide sleeve in threaded connection with the adjusting screw. The adjusting screw is rotatably connected to the V-shaped support. The guide sleeve is provided with a yoke for driving the lifting plate to rotate around the positioning shaft. A limiting sliding groove is formed in the V-shaped support for the yoke to slide.

[0017] Preferably, the lifting plate and the turnover disc are detachably fixedly connected through a screw, the screw is perpendicular to the turnover disc and parallel to the positioning shaft, the turnover disc is provided with a threaded hole matched with the screw, and the lifting plate is provided with a through hole through which the screw passes, and the lifting plate and the positioning shaft are in clearance fit.

[0018] Preferably, the free end of the positioning shaft is threadedly connected with a nut, and the nut is used for clamping the V-shaped support between the nut and the lifting plate.

[0019] The present application has the following beneficial effects:

[0020] The multi-degree-of-freedom assembly tool designed in the present application can realize the up-down, left-right, front-back, pitching and overturning movements of the engine nozzle, specifically, the up-down movement of the engine nozzle can be realized by using the lifting mechanism, the left-right and front-back movements of the engine nozzle can be realized by using the first and second bidirectional moving mechanisms, the top of the first nozzle support is detachably rotatably connected with the first nozzle overturning support, the top of the second nozzle support is detachably rotatably connected with the second nozzle overturning support, the overturning movement of the engine nozzle can be realized, and the pitching angle adjustment of the engine nozzle can be realized by using the angle adjusting mechanism, so that the posture adjustment of the nozzle by workers on site is facilitated, the device can also be used as a nozzle assembly parking vehicle, the assembly is parked on the vehicle, and in certain cases, the nozzle assembly can be directly connected with the engine to replace the back-and-forth transfer and hoisting links among the nozzle parking vehicle, the engine and the hoist. Since the present application has compact structure and multiple movement dimensions, the problem of assembling and disassembling the nozzle assembly in the limited operation space of the test bench is solved, the device is convenient to use and simple to maintain, and the manufacturing cost is low.

[0021] Further, the lifting plate designed on the first and second nozzle overturning supports can realize the quick connection of the hoist, saves the separate connection links of the hoist and the nozzle assembly and the transport vehicle and the nozzle assembly, and greatly improves the assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the multi-degree-of-freedom assembly tool of the present application;

[0023] Figure 2 is a structural schematic view of the front-back moving structure in the bidirectional moving mechanism of the multi-degree-of-freedom assembly tool of the present application;

[0024] Figure 3 is a structural schematic view of the left-right moving structure in the bidirectional moving mechanism of the multi-degree-of-freedom assembly tool of the present application;

[0025] Fig. 4(a) is a structural schematic view of the pitching movement structure (V-shaped support) of the multi-degree-of-freedom assembly tool of the present application; and Fig. 4(b) is a sectional structural schematic view of the pitching movement structure (V-shaped support) of the multi-degree-of-freedom assembly tool of the present application;

[0026] Figure 5 It is a schematic diagram of the multi-degree-of-freedom assembly tool flip motion structure (nozzle flip bracket) of the present invention.

[0027] In the figure, 1-lower frame, 2-scissors lifting mechanism, 3-upper frame, 4-manual oil pump, 5-front and rear direction adjustment hand wheel, 6-left and right direction adjustment hand wheel, 7-nozzle bracket, 8-nozzle flip bracket, 9-positioning shaft, 10-nut, 11-first screw, 12-upper frame mounting plate, 13-front and rear moving slide, 14-left and right moving slide, 15-second screw, 16-nut support, 17-V-shaped support, 17-1-V-shaped groove, 17-2 limiting slide, 18-fork, 19-thread guide sleeve adjustment mechanism, 19-1-adjusting screw, 19-2-guide sleeve, 20-nut, 21-screw, 22-flip plate, 23-lifting plate, 24-connecting seat, 25-flip arm, 26-beam. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See also Figure 1 The multi-degree-of-freedom assembly tool of the present invention includes a lifting mechanism, a first two-way moving mechanism, a second two-way moving mechanism, a first nozzle bracket ( Figure 1 The left nozzle bracket 7 shown), the second nozzle bracket ( Figure 1 The right nozzle bracket 7 shown), the first nozzle flip bracket ( Figure 1 The left nozzle flip bracket 8) and the second nozzle flip bracket ( Figure 1 The right side nozzle flip bracket 8 is shown); the first two-way movable mechanism and the second two-way movable mechanism are symmetrically arranged at the top of the lifting mechanism, the first nozzle bracket and the second nozzle bracket are both vertically arranged, and the first nozzle bracket and the second nozzle bracket are respectively arranged at the top of the first two-way movable mechanism and the top of the second two-way movable mechanism; the first two-way movable mechanism can adjust the position of the first nozzle bracket in a certain horizontal plane, and the second two-way movable mechanism can adjust the position of the second nozzle bracket in a certain horizontal plane; the top of the first nozzle bracket is detachably and rotatably connected to the first nozzle flip bracket, and an angle adjustment mechanism for adjusting the angle of the first nozzle flip bracket is provided between the top of the first nozzle bracket and the first nozzle flip bracket, the top of the second nozzle bracket is detachably and rotatably connected to the second nozzle flip bracket, and an angle adjustment mechanism for adjusting the angle of the second nozzle flip bracket is provided between the top of the second nozzle bracket and the second nozzle flip bracket; the first nozzle flip bracket and the second nozzle flip bracket can clamp the nozzle.

[0030] by Figure 1The orientation shown is an example, in use, the lifting mechanism is used to control the up-down movement (marked as Z-axis direction) of the first bidirectional movement mechanism, the second bidirectional movement mechanism, the first nozzle support, the second nozzle support, the first nozzle overturning support and the second nozzle overturning support, so as to realize the up-down movement of the engine nozzle, the first and second bidirectional movement mechanisms can drive the nozzle support 7 and the nozzle overturning support 8 to move in the XY plane perpendicular to the Z-axis, so that the left-right (marked as X-axis direction) and front-back (marked as Y-axis direction) movement of the engine nozzle can be realized; the top of the first nozzle support is detachably rotatably connected with the first nozzle overturning support, and the top of the second nozzle support is detachably rotatably connected with the second nozzle overturning support, which can realize the overturning movement of the engine nozzle around the axis of the rotating shaft, and facilitate the hoisting of the engine nozzle and the overall structure of the first and second nozzle overturning supports. An angle adjusting mechanism for adjusting the angle of the first nozzle overturning support is arranged between the top of the first nozzle support and the first nozzle overturning support, and an angle adjusting mechanism for adjusting the angle of the second nozzle overturning support is arranged between the top of the second nozzle support and the second nozzle overturning support, so that the fine adjustment of the pitch angle of the engine nozzle can be realized through the angle adjusting mechanism. It can be seen that the multi-degree-of-freedom assembly tool designed in the application can realize the up-down, left-right, front-back, pitch and overturning movement of the engine nozzle in five dimensions.

[0031] As a preferred embodiment of the application, see Figure 2 , the lifting mechanism is movable, which facilitates the movement of the engine nozzle carried by the application, and facilitates on-site operation. The movable mode can adopt a roller arranged on the lifting mechanism, and the roller can adopt a universal wheel, which is not limited in the application.

[0032] As a preferred embodiment of the application, see Figure 2 , the lifting mechanism adopts a scissor type manual oil pressure lifting mechanism, which includes a lower frame 1, an upper frame 3 and a scissor lifting mechanism 2. The lower frame 1 is connected with the upper frame 3 through the scissor lifting mechanism 2. By operating the manual oil pump 4 of the scissor type manual oil pressure lifting mechanism, the two oil cylinders installed on the lower frame 1 and the scissor lifting mechanism are extended and retracted, so that the scissor mechanism drives the upper frame 1 and the nozzle assembly connected on the nozzle overturning support 8 to move up and down, and realizes the up-down adjustment of the nozzle.

[0033] See Figures 1-3As a preferred embodiment of the present invention, the first bidirectional moving mechanism and the second bidirectional moving mechanism have the same structure, both including a forward and backward moving slide 13, a left and right moving slide 14 and a slide driving mechanism. The forward and backward moving slide 13 is arranged on a lifting mechanism, and a slide driving mechanism for driving the forward and backward moving slide 13 is installed on the lifting mechanism. The left and right moving slide 14 is arranged on the forward and backward moving slide 13, and a slide driving mechanism for driving the left and right moving slide 14 is installed on the forward and backward moving slide 13. The first nozzle bracket or the second nozzle bracket is arranged on the left and right moving slide 14; the sliding direction of the forward and backward moving slide 13 is parallel to the central axis of the nozzle (the Y-axis direction), and the sliding direction of the left and right moving slide 14 is perpendicular to the central axis of the nozzle (the X-axis direction). In the above structure, the slide driving mechanism can drive the forward and backward moving slide 13 and the left and right moving slide 14 to move, so that the engine nozzle is adjusted to a suitable position.

[0034] See also Figure 2 and Figure 3 As a preferred solution of the above solution, the slide driving mechanism adopts a screw-nut mechanism, and one end of the screw of the screw-nut mechanism is connected to the adjustment handwheel. Figure 2 , the front and rear adjustment hand wheel 5 is installed on the upper frame 3, the adjustment hand wheel 5 and the first screw 11 are installed on the bracket connected to the upper frame mounting plate 12, the upper frame mounting plate 12 is fixedly mounted on the upper frame 3, the nut 10 is connected to the front and rear moving slide 13, the front and rear direction adjustment hand wheel 5 is rotated, the nut 10 rotates synchronously, and after the nut 10 rotates, it drives its upper connecting component (that is, the front and rear moving slide 13 and the structure installed on it) to do linear motion (with Figure 2 The direction shown is taken as an example, which is the left and right direction), thereby driving the left and right moving slide 14, the nozzle bracket, the nozzle flip bracket and the nozzle to move together, so as to achieve the front and back adjustment of the nozzle assembly; wherein, the first screw 11 and the nut 10 of the screw nut mechanism constitute the screw nut mechanism that drives the front and back moving slide 13 to move. Figure 3 The left and right adjustment handwheels 6 and the adjustment screw 15 are installed on the nozzle bracket 7 and the nut support 16. The nozzle bracket 7 is welded to the left and right movable slide 14. The nut support 16 is fixed to the front and rear movable slide 13 by bolts. The left and right adjustment handwheel 6 is rotated to synchronously drive the second screw 15 to rotate. The second screw 15 drives the slide 14 and its upper connecting parts (i.e., the nozzle bracket, the nozzle flip bracket and the nozzle) to make linear motion in the left and right directions to realize the left and right adjustment of the nozzle assembly; the second screw 15 and the nut support 16 constitute a screw nut mechanism that drives the left and right movable slide 14 to move.

[0035] See also Figure 1 As a preferred embodiment of the above scheme, the first nozzle bracket and the second nozzle bracket are connected to form an integral structure through a crossbeam (26), see Figure 1The left and right two nozzle support frames 7 are connected with each other through the cross beam 26, so that the left and right two nozzle support frames 7 are synchronously moved when the positions of the left and right two nozzle support frames 7 in the XY plane are adjusted, and the stability of the nozzle overturning support 8 clamping the engine nozzle is ensured.

[0036] Referring to Figure 1 , Figure 3 and Figure 5 , as a preferred embodiment of the present application, the first nozzle overturning support and the second nozzle overturning support are identical in structure, and each comprises an overturning disc 22, an overturning arm 25, a connecting seat 24, a positioning shaft 9 and a lifting plate 23. The positioning shaft 9 is coaxially installed at the shaft center of the overturning disc 22. The overturning arm 25 is symmetrically installed on the overturning disc 22. One end of the overturning arm 25 is connected with the overturning disc 22, and the other end of the overturning arm 25 is provided with the connecting seat 24. The first nozzle overturning support and the second nozzle overturning support are detachably connected with the nozzle through the connecting seat 24. The positioning shaft 9 is detachably and rotatably connected with the top of the first nozzle support or the second nozzle support. The axis of the positioning shaft 9 is perpendicular to the axis of the nozzle. The whole nozzle overturning support can be rotated on the nozzle support with the positioning shaft 9 as the rotating shaft, so that the overturning movement of the engine nozzle is realized. The lifting plate 23 is sleeved on the positioning shaft 9 and fixedly connected with the positioning shaft 9 or the overturning disc 22. When the lifting plate 23 is rotated with the positioning shaft 9 as the rotating shaft, the whole nozzle overturning support can be synchronously rotated. The top of the first nozzle support and the top of the second nozzle support are provided with an angle adjusting mechanism for driving the lifting plate 23 to rotate around the positioning shaft 9. Therefore, the angle adjusting mechanism can drive the lifting plate 23 to be adjusted in angle, so that the adjustment of the pitch angle of the engine nozzle is realized.

[0037] Referring to Figure 1 , Figure 3 , Figures 4(a) to 5, as the preferred scheme of the above scheme, the top of the first nozzle support and the second nozzle support is provided with a V-shaped support 17, the top of the V-shaped support 17 is provided with a V-shaped groove 17-1 for setting the positioning shaft 9, the V-shaped groove 17-1 is parallel to the axis of the positioning shaft 9, the positioning shaft 9 can be embedded in the V-shaped groove 17-1, the V-shaped groove 17-1 can limit the positioning shaft 9, and also facilitate the positioning shaft 9 to move out of the V-shaped groove 17-1 upward, so as to realize the detachable rotary connection of the positioning shaft 9 and the top of the first nozzle support or the second nozzle support. Referring to FIGS. 4(a) and 4(b), the V-shaped support 17 is provided with the angle adjusting mechanism, the angle adjusting mechanism adopts a threaded guide sleeve adjusting mechanism 19, the threaded guide sleeve adjusting mechanism 19 includes an adjusting screw 19-1 and a guide sleeve 19-2 which is threadedly connected with the adjusting screw 19-1, the adjusting screw 19-1 is rotatably connected with the V-shaped support 17, when the adjusting screw 19-1 is rotated, the guide sleeve 19-2 can move left and right along the adjusting screw 19-1 (for example, in the orientation shown in FIG. 4(b)). The guide sleeve 19-2 is provided with a yoke 18 for driving a lifting plate 23 to rotate around the positioning shaft 9, referring to Figure 5 , the lower end of the lifting plate 23 extends into the opening of the yoke 18, when the guide sleeve 19-2 moves along the adjusting screw 19-1, the lifting plate 23 is driven by the yoke 18 to rotate around the positioning shaft 9, so as to realize the adjustment of the pitch angle of the engine nozzle, the upper end of the lifting plate 23 can be provided with an eye or a lifting hole, the V-shaped support 17 is provided with a limiting sliding groove 17-2 for sliding of the yoke 18, the limiting sliding groove 17-2 can also prevent the yoke 18 from swinging up and down.

[0038] Referring to Figure 1 , Figure 3 , Figure 5 , as the preferred scheme of the above scheme, the lifting plate 23 and the turnover disc 22 are detachably fixedly connected through a screw 21, the screw 21 is perpendicular to the turnover disc 22 and parallel to the positioning shaft 9, the turnover disc 22 is provided with a threaded hole matched with the screw 21, the lifting plate 23 is provided with a through hole through which the screw 21 passes, and the lifting plate 23 and the positioning shaft 9 are gap-fitted. The screw 21 can relatively fix the lifting plate 23 and the turnover disc 22, when it is necessary to manually adjust the angle of the engine nozzle, the screw 21 is loosened to release the relative fixation between the lifting plate 23 and the turnover disc 22, the nozzle is manually rotated to rotate around the support, and the turnover function of the nozzle in horizontal and vertical states is realized. When the lifting plate 23 and the turnover disc 22 are relatively fixed through the screw 21, the angle of the lifting plate 23 is adjusted through the angle adjusting mechanism, and the fine adjustment of the pitch angle of the engine nozzle can be realized.

[0039] Referring to Figure 5As a preferred solution of the above solution, the free end of the positioning shaft 9 is threadedly connected with a nut 20, which is used to clamp the V-shaped support 17 between the nut 20 and the lifting plate 23, and the relative fixation between the whole nozzle overturning support and the nozzle support (or the V-shaped support) can be achieved by the nut 20, so that the stability of the engine nozzle angle adjustment is ensured, and the manual adjustment can be facilitated after the nut 20 is loosened.

[0040] Embodiment

[0041] The multi-degree-of-freedom assembly tool mainly comprises a lower frame 1, an upper frame 3, a nozzle support 7, a scissor-type manual oil pressure lifting mechanism, a bidirectional movement mechanism, and a nozzle overturning support 8. The Z-direction lifting function of the upper frame 3 driving the nozzle is realized by the manual oil pressure scissor-type lifting mechanism; the front-and-back movement function of the nozzle along the engine axial direction is realized by simultaneously rotating the front-and-back direction adjustment hand wheel 5 on the left and right sides of the upper frame 3, and the nozzle support 7 driving the nozzle to move along the front-and-back movement slide plate 13; the left-and-right movement function of the nozzle along the engine radial direction is realized by simultaneously rotating the left-and-right direction adjustment hand wheel 6 on the two sides, and the nozzle support 7 driving the nozzle to move left and right; the front-and-back pitch fine adjustment of the nozzle in the assembly process is realized by rotating the nozzle around the positioning shaft 9 in the V-shaped groove of the V-shaped support 17, so as to make the nozzle mounting surface fit the engine mounting surface; the horizontal and vertical state overturning function of the nozzle is realized by rotating the lifting plate and the nozzle connecting frame after adjusting the nut 20 at the rear end of the positioning shaft 9 to increase the shaft end gap, rotating the screw on the lifting plate, and manually rotating the nozzle to make the nozzle rotate around the support. The lifting plate is designed on the nozzle overturning support 8, and the quick connection with the lifting appliance can be achieved.

[0042] Specifically, in the embodiment, the lower frame 1 and the upper frame 3 are connected by the scissor lifting mechanism 2 in the middle, and the two oil cylinders installed on the lower frame 1 and the scissor lifting mechanism are extended and retracted by operating the manual oil pump 4, so as to realize the up-and-down movement of the scissor mechanism driving the upper frame and the nozzle assembly connected to the nozzle overturning support 8, and realize the up-and-down adjustment.

[0043] The front-and-back direction adjustment hand wheel 5 is installed on the upper frame, the front-and-back direction adjustment hand wheel 5 and the first lead screw 11 are installed on the support connected to the upper frame mounting plate 12, and the nut 10 is connected to the front-and-back movement slide plate 13. By adjusting the front-and-back direction adjustment hand wheel 5, the nut 10 drives the upper connecting component and the nozzle assembly to move linearly, so as to realize the front-and-back adjustment of the nozzle assembly.

[0044] The left-right direction adjusting hand wheel 6 and the second screw rod 15 are installed on the nozzle support 7 and the nut support 16, the nozzle support 7 is welded on the left-right moving slide plate 14, the nut support 16 is fixed on the front-back moving slide plate 13 through bolts, the left-right direction adjusting hand wheel 6 is adjusted, the second screw rod 15 drives the left-right moving slide plate 14 and the upper connecting component to move linearly in the left-right direction, and the left-right adjustment of the nozzle assembly is realized;

[0045] The connecting seat 24 on the nozzle overturn support 8 is connected with the nozzle assembly through bolts, the assembly is provided with a lifting plate 23, the nozzle assembly can be lifted and quickly docked on the multi-degree-of-freedom assembly process equipment;

[0046] The V-shaped support 17 fixed on the nozzle support 7 is provided with a threaded guide sleeve adjusting mechanism 19 which can move forward and backward, the yoke 18 is fixed on the guide sleeve through bolts, when the nozzle assembly is fixed on the multi-degree-of-freedom assembly process equipment, the lower end of the lifting plate at both ends is clamped in the yoke 18, the nozzle assembly is limited to overturn around the positioning shaft 9, the adjusting screw on the side of the threaded guide sleeve adjusting mechanism 19 is operated, the yoke moves forward and backward along with the guide sleeve, drives the nozzle overturn support 8 and the nozzle assembly to rotate around the positioning shaft 9 in the V-shaped groove of the V-shaped support 17, and the front-back pitching fine adjustment of the nozzle in the assembly process is realized.

[0047] The nut 20 at the rear end of the positioning shaft 9 is adjusted to increase the gap between the shaft ends, the screw 21 is rotated, the lifting plate is separated from the overturning disc of the nozzle overturn support, the nozzle is manually rotated, the nozzle is rotated around the support, and the overturning function of the nozzle in the horizontal and vertical state is realized.

[0048] In conclusion, the multi-degree-of-freedom adjusting (5-dimensional motion adjusting) device for disassembling and assembling the engine nozzle assembly on the ground or the test bed is designed, workers can assemble and disassemble the nozzle assembly, and the assembly efficiency is improved. The device is used for assembling the engine tail nozzle on the ground or the test bed.

Claims

1. A multi-degree-of-freedom assembly tool, characterized in that: It includes a lifting mechanism, a first two-way moving mechanism, a second two-way moving mechanism, a first nozzle bracket, a second nozzle bracket, a first nozzle flip bracket and a second nozzle flip bracket; The first bidirectional movable mechanism and the second bidirectional movable mechanism are symmetrically arranged on the top of the lifting mechanism, the first nozzle bracket and the second nozzle bracket are both vertically arranged, and the first nozzle bracket and the second nozzle bracket are respectively arranged on the top of the first bidirectional movable mechanism and the top of the second bidirectional movable mechanism; the first bidirectional movable mechanism can adjust the position of the first nozzle bracket in a certain horizontal plane, and the second bidirectional movable mechanism can adjust the position of the second nozzle bracket in a certain horizontal plane; The top of the first nozzle bracket is detachably and rotatably connected to the first nozzle flip bracket, and an angle adjustment mechanism for adjusting the angle of the first nozzle flip bracket is provided between the top of the first nozzle bracket and the first nozzle flip bracket. The top of the second nozzle bracket is detachably and rotatably connected to the second nozzle flip bracket, and an angle adjustment mechanism for adjusting the angle of the second nozzle flip bracket is provided between the top of the second nozzle bracket and the second nozzle flip bracket; The first nozzle flip bracket and the second nozzle flip bracket are capable of clamping the nozzle; The first nozzle flip bracket and the second nozzle flip bracket have the same structure, both comprising a flip disc (22), a flip arm (25), a connecting seat (24), a positioning shaft (9) and a lifting plate (23), the positioning shaft (9) being coaxially mounted on the axis of the flip disc (22), a rotating arm (25) being symmetrically mounted on the flip disc (22), one end of the flip arm (25) being connected to the flip disc (22), and the other end of the flip arm (25) being mounted with the connecting seat (24), the first nozzle flip bracket and the second nozzle flip bracket being detachably connected to the nozzle via the connecting seat (24), the positioning shaft (9) being detachably rotatably connected to the top of the first nozzle bracket or the second nozzle bracket, the axis of the positioning shaft (9) being perpendicular to the axis of the nozzle, the lifting plate (23) being sleeved on the positioning shaft (9) and fixedly connected to the positioning shaft (9) or the flip disc (22), and the tops of the first nozzle bracket and the second nozzle bracket being both provided with an angle adjustment mechanism for driving the lifting plate (23) to rotate around the positioning shaft (9); The tops of the first nozzle bracket and the second nozzle bracket are both provided with a V-shaped support (17), the top of the V-shaped support (17) is provided with a V-shaped groove (17-1) for setting the positioning shaft (9), the V-shaped groove (17-1) is parallel to the axis of the positioning shaft (9), and a threaded guide sleeve adjustment mechanism (19) is installed on the V-shaped support (17), the threaded guide sleeve adjustment mechanism (19) includes an adjusting screw (19-1) and a guide sleeve (19-2) threadedly connected to the adjusting screw (19-1), the adjusting screw (19-1) is rotatably connected to the V-shaped support (17), and a shift fork (18) for driving the lifting plate (23) to rotate around the positioning shaft (9) is installed on the guide sleeve (19-2), and a limiting slide groove (17-2) for the shift fork (18) to slide is opened on the V-shaped support (17).

2. The multi-degree-of-freedom assembly tool according to claim 1, characterized in that: The lifting mechanism is movable.

3. A multi-degree-of-freedom assembly tool according to claim 1 or 2, characterized in that: The lifting mechanism adopts a scissor-type manual oil pressure lifting mechanism.

4. The multi-degree-of-freedom assembly tool according to claim 1, characterized in that: The first bidirectional moving mechanism and the second bidirectional moving mechanism have the same structure, both comprising a front-to-back moving slide plate (13), a left-to-right moving slide plate (14) and a slide plate driving mechanism, the front-to-back moving slide plate (13) being arranged on the lifting mechanism, the lift mechanism being provided with a slide plate driving mechanism for driving the front-to-back moving slide plate (13) to move, the left-to-right moving slide plate (14) being arranged on the front-to-back moving slide plate (13), the front-to-back moving slide plate (13) being provided with a slide plate driving mechanism for driving the left-to-right moving slide plate (14) to move, and the first nozzle bracket or the second nozzle bracket being provided on the left-to-right moving slide plate (14); The sliding direction of the front-back moving slide plate (13) is parallel to the central axis of the nozzle, and the sliding direction of the left-right moving slide plate (14) is perpendicular to the central axis of the nozzle.

5. The multi-degree-of-freedom assembly tool according to claim 4, characterized in that: The slide plate driving mechanism adopts a screw-nut mechanism, and one end of the screw of the screw-nut mechanism is connected to the adjusting hand wheel.

6. The multi-degree-of-freedom assembly tool according to claim 1, characterized in that: The first nozzle bracket and the second nozzle bracket are connected to form an integral structure via a crossbeam (26), so that the first nozzle bracket and the second nozzle bracket can move synchronously.

7. The multi-degree-of-freedom assembly tool according to claim 1, characterized in that: The lifting plate (23) and the turning plate (22) are detachably fixedly connected by screws (21), the screws (21) are perpendicular to the turning plate (22) and parallel to the positioning shaft (9), the turning plate (22) is provided with a threaded hole that cooperates with the screws (21), and the lifting plate (23) is provided with a through hole for the screws (21) to pass through, and the lifting plate (23) and the positioning shaft (9) are clearance-fitted.

8. The multi-degree-of-freedom assembly tool according to claim 1, characterized in that: The free end of the positioning shaft (9) is threadedly connected to a nut (20), and the nut (20) is used to clamp the V-shaped support (17) between the nut (20) and the lifting plate (23).

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