A core machine assembly system and method

Abstract

The present application relates to a kind of core machine assembly system and method, wherein assembly lifting mechanism is arranged in ground well, the upper end of assembly lifting mechanism is equipped with lifting platform and positioning table with positioning pin shaft, AGV car is equipped with docking assembly lifting mechanism and floating platform, positioning support frame includes the positioning support plate of upper end, and the lower side of positioning support plate is supported by floating platform, positioning support leg with the positioning pin sleeve of lower end is equipped in the both sides of positioning support plate, and the positioning pin sleeve is matched with the corresponding positioning pin shaft on positioning table, and in the assembly process of each component of core machine, the positioning table is driven to descend to corresponding height by lifting platform according to the assembly situation of different components.The present application drives positioning table to descend by using assembly lifting mechanism arranged in ground well to cooperate with the assembly of different core machine components, and the present application uses positioning support frame, floating platform and AGV car to realize the entry and exit of core machine positioning table, so as to improve the assembly efficiency and automation level of system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aero-engine assembly, in particular to a core engine assembly system and method. BACKGROUND

[0002] The core engine is a core component of the aero-engine, and its assembly efficiency and assembly quality will directly affect the overall assembly efficiency and assembly quality of the engine. The core engine assembly method in the prior art is mainly completed by hoisting, such as the Chinese patent for invention with the authorized announcement number CN103056653B, which discloses a bracket type core engine assembly method. The method is equipped with a core engine assembly bracket, and is additionally equipped with a universal lifting appliance, a core engine lifting appliance and other special hoisting toolings. In step one of the method, the intermediate casing is first installed on the support table of the core engine assembly bracket by using the universal lifting appliance, then the high-pressure rotor is hoisted and aligned with the central bevel gear inner hole of the intermediate casing, after the alignment, the high-pressure rotor is slowly put into the inner hole of the central bevel gear, then detection is performed on whether the high-pressure rotor is assembled in place, after the detection is qualified, the high-pressure casing, the combustion chamber and the high-pressure turbine are sequentially assembled, and after the assembly is completed, the core engine is transferred by using the crane to hoist the core engine lifting appliance. The core engine lifting appliance is a specially designed lifting appliance tooling, and the lower side of the core engine lifting appliance is provided with a mandrel and other structures. During hoisting, the mandrel needs to be slowly lowered into the high-pressure turbine and pass through the high-pressure rotor, and then the lower end of the mandrel is stretched out from the first nut, then the casing support seat and the combustion chamber are connected through the screw and nut on the casing support seat, and then the mandrel nut is installed at the lower end of the mandrel from below the intermediate casing. The above-mentioned assembly process is relatively complicated, and the core engine assembly bracket cannot adjust the height according to the assembly needs of different core engine components, which requires workers to frequently climb and work, thereby increasing the labor intensity and operation danger of the workers, and in addition, the method also needs to be equipped with special hoisting toolings, thereby existing problems such as too many redundant components, being not conducive to on-site management and the like. SUMMARY

[0003] The present application aims to provide a core engine assembly system and method, which drives the positioning table to lift by using the assembly lifting mechanism arranged in the ground well, so that the descending height of the positioning table can be adjusted according to the assembly needs of different core engine components, thereby saving the assembly time, improving the assembly efficiency, and at the same time, the workers do not need to frequently climb and work, thereby reducing the labor intensity of the workers, and in addition, the core engine is in and out of the positioning table by using the positioning support frame, the floating platform and the AGV trolley, which not only further improves the assembly efficiency, but also improves the automation level of the system.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] A core machine assembly system, comprising an assembly lifting mechanism, a positioning support frame and an AGV trolley, wherein a ground well is arranged below the ground, and the assembly lifting mechanism is arranged in the ground well, the upper end of the assembly lifting mechanism is provided with a lifting platform, and the lifting platform is provided with a positioning table, the positioning table is provided with a positioning pin shaft, the AGV trolley is provided with a docking lifting mechanism, and the docking lifting mechanism is provided with a floating platform, the positioning support frame comprises a positioning support plate at the upper end, and the lower side of the positioning support plate is supported by the floating platform, the upper side of the positioning support plate bears core machine components, positioning legs are arranged on both sides of the positioning support plate, and positioning pin sleeves are arranged at the lower end of the positioning legs, the positioning pin sleeves are matched with the corresponding positioning pin shafts on the positioning table, and in the assembly process of each component of the core machine, the positioning table is lowered to the corresponding height by the lifting platform according to the assembly condition of different components.

[0006] The assembly lifting mechanism comprises a frame body, an assembly lifting motor, a transmission shaft, an assembly transmission box, a lifting lead screw and a lifting lead nut, wherein the lifting platform is arranged in the frame body, and the two ends of the lifting platform are respectively connected with the corresponding side of the frame body in sliding mode, the assembly lifting motor is arranged at the bottom of the frame body, the output shafts on both sides of the assembly lifting motor are respectively connected with the input ends of the corresponding side assembly transmission box through the corresponding side transmission shaft, the output end of the assembly transmission box is connected with the lower end of the corresponding side lifting lead screw, mounting beams are arranged on both sides of the upper end of the frame body, and the upper end of the lifting lead screw is rotatably mounted on the corresponding side mounting beam, the lifting lead nut is sleeved on the lifting lead screw, and the lifting lead nut is arranged in the lifting platform.

[0007] The docking lifting mechanism comprises a lifting drive device, a driving gear, a driving lifting shaft, an intermediate gear, a driven gear, a driven lifting shaft and a lifting plate, wherein the middle part of the driving gear is provided with a driving nut sleeve, the driving nut sleeve is driven to rotate by the lifting drive device, the driving lifting shaft is inserted into the driving nut sleeve, the driving gear and each driven gear are distributed along the circumferential direction of the intermediate gear and are engaged with the intermediate gear, and the middle part of the driven gear is provided with a driven nut sleeve, and the driven lifting shaft is inserted into the corresponding driven nut sleeve.

[0008] The inside of the shell of the lifting drive device is provided with a motor, a first gear and a second gear, wherein the first gear is engaged with the second gear and is driven to rotate by the motor, and the second gear is sleeved on the driving nut sleeve.

[0009] The surface of the positioning support plate at the upper end of the positioning support frame is provided with a workpiece connecting piece.

[0010] The floating platform comprises a platform frame body and an upper end plate of the frame body, the platform frame body is arranged on the docking lifting mechanism, the upper end plate of the frame body is arranged on the upper end of the platform frame body, a plurality of rolling ball bearings are arranged on the upper end plate of the frame body, limit plates are arranged around the upper end plate of the frame body, a load bearing adjusting plate is arranged on the upper end plate of the frame body and supported by the rolling ball bearings, and the load bearing adjusting plate is limited by the limit plates around the load bearing adjusting plate, a positioning support plate at the upper end of the positioning support frame is arranged on the load bearing adjusting plate, and locking pins connected with the upper end plate of the frame body are arranged at the corners of the load bearing adjusting plate.

[0011] The inner side of the limit plate is provided with a buffer pad, the upper side of the load bearing adjusting plate is provided with load bearing limiting blocks, and the positioning support plate is arranged between the two load bearing limiting blocks.

[0012] The floating platform comprises a platform frame body, the platform frame body is arranged on the docking lifting mechanism, an upper end plate of the frame body is arranged on the upper end of the platform frame body, an X-direction adjusting mechanism is arranged on the upper side of the upper end plate of the frame body, an X-direction sliding plate driven to move by the X-direction adjusting mechanism is arranged on the upper side of the X-direction adjusting mechanism, a Y-direction adjusting mechanism is arranged on the upper side of the X-direction sliding plate, a Y-direction sliding plate driven to move by the Y-direction adjusting mechanism is arranged on the upper side of the Y-direction adjusting mechanism, and a load bearing adjusting plate driven to rotate by a rotating mechanism is arranged on the upper side of the Y-direction sliding plate.

[0013] The X-direction adjusting mechanism comprises an X-direction screw driven to rotate by an X-direction motor and an X-direction nut sleeved on the X-direction screw, an X-direction connecting seat is arranged on the X-direction nut and fixedly connected with the X-direction sliding plate, and the two sides of the X-direction sliding plate are slidably connected with the two sides of the upper end plate of the frame body;

[0014] The Y-direction adjusting mechanism comprises a Y-direction screw driven to rotate by a Y-direction driving assembly and a Y-direction nut sleeved on the Y-direction screw, a Y-direction connecting seat is arranged on the Y-direction nut and fixedly connected with the Y-direction sliding plate, and the two sides of the Y-direction sliding plate are slidably connected with the two sides of the X-direction sliding plate;

[0015] The rotating mechanism comprises a rotating adjusting motor, a worm and a worm wheel, the worm is meshed with one side of the worm wheel and driven to rotate by the rotating adjusting motor, and the worm wheel is fixedly connected with the load bearing adjusting plate.

[0016] A core machine assembly system is provided, which comprises the following components:

[0017] Step one, the positioning table is first lifted to a position flush with the ground by the lifting table, and then the AGV trolley moves together with the positioning support frame to the positioning table;

[0018] Step two, the fixed connection between the floating platform and the positioning support frame is released, then the docking lifting mechanism drives the positioning support frame to descend until the positioning pin sleeve at the lower end of the two positioning legs is matched with the corresponding positioning pin shaft on the positioning table;

[0019] Step three, the docking lifting mechanism continues to descend to make the floating platform separate from the positioning support frame, then the AGV trolley exits the positioning support frame together with the docking lifting mechanism;

[0020] Step four, the intermediate unit body of the core engine is fixedly connected with the positioning support plate at the upper end of the positioning support frame;

[0021] Step five, the high-pressure rotor, the high-pressure engine case, the combustion chamber and the high-pressure turbine are sequentially installed, and during the assembly process, the lifting table drives the positioning table to descend to the set height according to the conditions of different parts;

[0022] Step six, after the core engine is completed, the AGV trolley reenters the positioning support frame, then the docking lifting mechanism starts to lift the positioning support frame and the core engine together until the positioning pin sleeve and the positioning pin shaft are separated by a set distance, then the floating platform is fixedly connected with the positioning support frame again;

[0023] Step seven, the AGV trolley drives the positioning support frame and the core engine to move to the next assembly station.

[0024] The advantages and positive effects of the present application are:

[0025] 1. The present application uses the assembly lifting mechanism arranged in the ground well to drive the positioning table to ascend and descend, so that the descending height of the positioning table can be adjusted according to the assembly needs of different core engine parts. Compared with the prior art, on the one hand, the present application can reduce the lifting height of each part transfer, because the positioning table descends, each part can be transferred to the upper side of the positioning table at approximately the same lifting height, which saves the operation of frequently changing the lifting height according to the conditions of different parts in the prior art, thereby saving the assembly time and improving the assembly efficiency. On the other hand, the present application also facilitates the work of workers, who always stand on the ground during assembly, rather than standing on the auxiliary frame for observation and assembly work, thereby avoiding frequent climbing work of workers, reducing the labor intensity of workers, and ensuring the safety of workers.

[0026] 2. The assembly lifting mechanism of the present application is integrated in a frame body, which is convenient for overall installation or transfer, and the assembly lifting mechanism drives the lifting by using the screw and nut, which can realize the purpose of accurately controlling the ascending and descending height of the positioning table, thereby further ensuring the assembly height adjustment needs of different parts of the core engine.

[0027] 3、The present application utilizes the positioning support frame, the floating platform and the AGV trolley to realize the core machine in and out positioning table, which not only further improves the assembly efficiency, also improves the automation level of the system, wherein the AGV trolley moves to the positioning table, and the positioning support frame is used to realize accurate positioning by the cooperation of the positioning pin sleeve at the lower end of the positioning support leg on both sides and the corresponding positioning pin shaft on the positioning table, so as to ensure the quality of subsequent assembly of the core machine, and the AGV trolley is also used to transfer to the next process after the core machine is assembled, so that the present application does not need to design a special lifting tool, which reduces the number of redundant components and is beneficial to on-site management.

[0028] 4、The present application can use the floating platform to fine-tune the position of the positioning support frame, so as to eliminate the positioning error in time and ensure the accurate alignment of the positioning pin sleeve and the corresponding positioning pin shaft on the positioning table, the floating platform can be manually adjusted or automatically adjusted according to the need, wherein the floating platform with manual adjustment uses a rolling ball bearing support to realize horizontal X, Y direction and rotation adjustment around the vertical Z direction of the bearing adjustment plate, which has simple and compact structure and is convenient for workers to fine-tune on site, while the automatic adjustment floating platform can realize automatic control fine-tuning through the operation screen, which further facilitates operation, and also meets the flexible docking needs between the next process assembly station auxiliary equipment, which can further improve the automation level of the whole assembly production line. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a working state diagram of the present application

[0030] Figure 2 It is Figure 1 the structure diagram of the assembly lifting mechanism,

[0031] Figure 3 It is Figure 1 the state diagram of the core machine in and out positioning table,

[0032] Figure 4 It is Figure 3 the cooperation state diagram of the positioning pin shaft and the positioning pin sleeve at the lower end of the positioning support frame,

[0033] Figure 5 It is Figure 3 the structure combination diagram of the AGV trolley and the floating platform,

[0034] Figure 6 It is Figure 5 the structure diagram of the docking lifting mechanism,

[0035] Figure 7 It is Figure 6 the installation structure diagram of the lifting driving device and the driving gear,

[0036] Figure 8For Figure 6 Figure 2 is a schematic view of the mounting structure of the driven gear,

[0037] Figure 9 For Figure 5 Figure 3 is a schematic view of the positional relationship between the load adjustment plate on the upper side of the floating platform and the end plate of the frame body,

[0038] Figure 10 For Figure 3 Figure 4 is a schematic view of the structural combination of the AGV and another floating platform,

[0039] Figure 11 For Figure 10 Figure 5 is a schematic view of the structure of the floating platform,

[0040] Figure 12 For Figure 11 Figure 6 is a schematic view of the X-direction adjustment mechanism in the floating platform,

[0041] Figure 13 For Figure 11 Figure 7 is a schematic view of the Y-direction adjustment mechanism in the floating platform.

[0042] Among them, 1 is the core machine, 2 is the positioning support frame, 201 is the positioning leg, 202 is the positioning pin sleeve, 203 is the positioning support plate, 2031 is the workpiece connector, 3 is the docking lifting mechanism, 301 is the lifting plate, 3011 is the operation screen bracket, 3012 is the operation screen, 302 is the lifting drive device, 3021 is the motor, 3022 is the first gear, 3023 is the second gear, 303 is the driving gear, 304 is the intermediate gear, and 305 is the driven gear. Components include: threaded nut bushing, driven gear (306), driven bearing housing (307), driven lifting shaft (308), driving lifting shaft (309), driving threaded nut bushing (310), floating platform (4), platform frame (401), upper end plate of frame (402), limit plate (4021), buffer pad (4022), load-bearing adjustment plate (403), load-bearing limit block (4031), rolling ball bearing (404), locking pin (405), X-axis adjustment mechanism (406), and X-axis motor (4061). 4062 is the X-axis lead screw, 4063 is the X-axis lead nut, 4064 is the X-axis connecting seat, 4065 is the X-axis slide rail, 4066 is the X-axis slider, 407 is the X-axis sliding plate, 408 is the Y-axis adjusting mechanism, 4081 is the Y-axis motor, 4082 is the right-angle transmission box, 4083 is the Y-axis lead screw, 4084 is the Y-axis lead nut, 4085 is the Y-axis connecting seat, 4086 is the Y-axis slide rail, 4087 is the Y-axis slider, 409 is the Y-axis sliding plate, 410 is... The rotating mechanism includes: 4101 rotary adjustment motor, 4102 worm gear, 4103 worm wheel, 5 positioning table, 501 positioning pin, 6 AGV trolley, 7 ground well, 701 ground surface, 8 assembly lifting mechanism, 801 assembly lifting motor, 802 drive shaft, 803 assembly transmission box, 804 lifting screw, 805 lifting platform, 806 lifting nut, 807 mounting beam, 808 frame, and 8081 lifting slide rail. Detailed Implementation

[0043] The invention will now be described in further detail with reference to the accompanying drawings.

[0044] like Figures 1-13 As shown, the present invention includes an assembly lifting mechanism 8, a positioning support frame 2, and an AGV trolley 6, wherein... Figures 1-2 As shown, a well 7 is provided below ground level 701, and the assembly lifting mechanism 8 is located in the well 7. A lifting platform 805 is provided at the upper end of the assembly lifting mechanism 8, and a positioning platform 5 is provided on the lifting platform 805. A positioning pin 501 is provided on the positioning platform 5. Figures 3-13As shown, the AGV trolley 6 is equipped with a docking lifting mechanism 3, and the docking lifting mechanism 3 is equipped with a floating platform 4. The positioning support frame 2 includes an upper positioning support plate 203, and the lower side of the positioning support plate 203 is supported by the floating platform 4. The upper side of the positioning support plate 203 carries the core machine 1 component. The positioning support plate 203 is equipped with positioning legs 201 on both sides, and the lower end of the positioning legs 201 is equipped with a positioning pin sleeve 202 that cooperates with the positioning pin shaft 501.

[0045] The assembly of this invention includes the following steps:

[0046] Step 1, such as Figure 1 As shown, the positioning platform 5 is first lifted to a position level with the ground 701 by the lifting platform 805, and then the AGV trolley 6, together with the positioning support frame 2, moves onto the positioning platform 5.

[0047] Step 2: Loosen the bolts securing the floating platform 4 to the positioning support frame 2, then connect the lifting mechanism 3 to lower the positioning support frame 2 until... Figure 4 The positioning pin sleeves 202 at the lower end of the positioning support legs 201 on both sides cooperate with the corresponding positioning pin shafts 501 on the positioning platform 5 to achieve precise positioning. During this process, the floating platform 4 can be adjusted to eliminate errors in time and ensure that the positioning pin sleeves 202 and the corresponding positioning pin shafts 501 are precisely connected.

[0048] Step 3: The docking lifting mechanism 3 continues to descend, causing the floating platform 4 to detach from the positioning support frame 2. Then, the AGV trolley 6, together with the docking lifting mechanism 3, exits the positioning support frame 2.

[0049] Step 4: Secure the intermediate unit of core machine 1 to the positioning support plate 203 at the upper end of positioning support frame 2;

[0050] Step 5: Install the high-pressure rotor, high-pressure casing, combustion chamber, and high-pressure turbine in sequence. During the assembly process, the lifting platform 805 drives the positioning platform 5 to descend to a set height according to the assembly needs of different components. Compared with the prior art, this invention can reduce the hoisting height of each component transfer because the positioning platform 5 descends in coordination, so each component can be transferred to the positioning platform 5 at approximately the same hoisting height. This eliminates the need for frequent changes in hoisting height according to the different components in the prior art. On the other hand, this invention also facilitates worker operations. Workers can always stand on the ground during assembly without having to frequently climb to the auxiliary frame for observation and assembly, ensuring worker safety.

[0051] Step six, after the core machine 1 is completed, the AGV car 6 re-enters the positioning support frame 2, and then the positioning support frame 2 and the core machine 1 are lifted together until the positioning pin sleeve 202 and the positioning pin shaft 501 are separated by a distance (such as 15mm), and then the floating platform 4 and the positioning support frame 2 are reconnected by bolts;

[0052] Step seven, the AGV car 6 drives the positioning support frame 2 and the core machine 1 to move to the next assembly station.

[0053] The AGV car 6 is a commercially available product, such as available from Shenyang Xinsong Robot Automation Co., Ltd., and the travel path of the AGV car 6 is programmed according to the needs of the site, which is a known technology in the art.

[0054] As shown in Figure 2 The assembly lifting mechanism 8 includes a frame body 808, an assembly lifting motor 801, a transmission shaft 802, an assembly transmission box 803, a lifting screw 804, and a lifting nut 806. The lifting platform 805 is arranged in the frame body 808, and the two ends of the lifting platform 805 are respectively connected with the corresponding side of the frame body 808. In this embodiment, lifting slide rails 8081 are arranged on both sides of the frame body 808, and lifting blocks are arranged on both ends of the lifting platform 805 and matched with the corresponding side lifting slide rails 8081. The assembly lifting motor 801 is arranged at the bottom of the frame body 808, and the assembly lifting motor 801 is a double-output shaft motor, and the output shafts on both sides are connected with the input ends of the corresponding side assembly transmission box 803 through the corresponding side transmission shaft 802. The assembly transmission box 803 is a right-angle transmission box, which is a commercially available product and a known technology in the art. The output ends of the assembly transmission box 803 are connected with the lower ends of the corresponding side vertical lifting screws 804. The upper ends of the lifting screws 804 are rotatably mounted on the corresponding side mounting beams 807 through bearings. The lifting nut 806 is sleeved on the lifting screw 804, and as shown in Figure 2 When the mechanism works, the assembly lifting motor 801 drives the lifting nuts 806 on both sides to synchronously ascend and descend through the transmission shafts 802 and the assembly transmission box 803 on both sides, and the lifting platform 805 is driven to ascend and descend by the lifting nuts 806. The positioning platform 5 is lowered by the lifting platform 805 to meet the installation height requirements of different parts of the core machine 1, and the lifting platform 805 can be accurately positioned by the screw and nut mechanism.

[0055] As shown in Figures 6-8As shown in the figure, the docking lifting mechanism 3 on the AGV 6 includes a lifting driving device 302, a driving gear 303, a driving lifting shaft 309, an intermediate gear 304, a driven gear 306, a driven lifting shaft 308, and a lifting plate 301, wherein as shown in the figure Figure 7 As shown in the figure, the driving gear 303 is provided with a driving nut sleeve 310 in the middle, and the driving nut sleeve 310 is driven to rotate by the lifting driving device 302. The rotation of the driving nut sleeve 310 drives the driving gear 303 to rotate. The driving lifting shaft 309 is inserted into the driving nut sleeve 310, and the rotation of the driving nut sleeve 310 drives the driving lifting shaft 309 to move up and down, and as shown in the figure Figure 6 As shown in the figure, the driving gear 303 and each driven gear 306 are distributed along the circumferential direction of the intermediate gear 304 and are engaged with the intermediate gear 304. The rotation of the driving gear 303 also drives each driven gear 306 to rotate through the intermediate gear 304, and as shown in the figure Figure 8 As shown in the figure, the driven gear 306 is provided with a driven nut sleeve 305 in the middle, and the driven lifting shaft 308 is inserted into the corresponding driven nut sleeve 305. The rotation of the driven gear 306 drives the driven nut sleeve 305 to rotate, and in turn drives the driven lifting shaft 308 to move up and down. The upper ends of the driving lifting shaft 309 and the driven lifting shaft 308 are connected with the lifting plate 301. The transmission ratio design of the driving gear 303, the intermediate gear 304, and the driven gear 306 ensures that the driving lifting shaft 309 and the driven lifting shaft 308 move up and down synchronously, and in turn ensures that the lifting plate 301 moves up and down smoothly, as shown in the figure Figure 3 As shown in the figure, the floating platform 4 is provided on the lifting plate 301 and is driven to move up and down by the lifting plate 301. In this embodiment, the jacking height of the docking lifting mechanism 3 is 60 mm, and the positioning accuracy is ±5 mm.

[0056] As shown in the figure Figure 7 As shown in the figure, the inside of the shell of the lifting driving device 302 is provided with a motor 3021, a first gear 3022, and a second gear 3023, wherein the first gear 3022 is engaged with the second gear 3023 and is driven to rotate by the motor 3021. The second gear 3023 is sleeved on the driving nut sleeve 310. The motor 3021 drives the driving nut sleeve 310 to rotate through the first gear 3022 and the second gear 3023, and at the same time, the inside of the shell of the lifting driving device 302 has enough space for the driving lifting shaft 309 to move up and down. The shell of the lifting driving device 302 is fixed on the AGV 6, and the upper end of the shell is provided with a driving bearing seat for supporting the rotation of the driving nut sleeve 310.

[0057] As shown in the figure Figure 6As shown, the AGV trolley 6 is also provided with driven bearing seat 307, and each driven wire nut sleeve 305 is rotatably installed in the corresponding driven bearing seat 307.

[0058] As shown in the drawings, Figure 5 As shown, the lifting plate 301 is provided with an operation screen support 3011, and the upper end of the operation screen support 3011 is provided with an operation screen 3012, and the circuit of the operation screen 3012 passes through the operation screen support 3011 and is connected with the control module on the AGV trolley 6 to realize power supply, and the motor 3021 is also connected with the control module through the circuit, so that the operator can control the lifting action of the docking lifting mechanism 3 through the operation screen 3012.

[0059] As shown in the drawings, Figure 3 As shown, the surface of the positioning support plate 203 at the upper end of the positioning support frame 2 is provided with a workpiece connecting piece 2031, and the workpiece connecting piece 2031 can be fixedly connected with the lower end of the core machine 1 through bolts, which can ensure the connection and also avoid the core machine 1 from toppling over.

[0060] As shown in the drawings, Figures 3-13 As shown, the floating platform 4 structure can be manually adjusted according to actual needs, or an automatic adjustment floating platform 4 structure can also be used.

[0061] Embodiment one:

[0062] As shown in the drawings, Figures 3-5 and Figure 9 As shown in the drawings, in this embodiment, the floating platform 4 adopts a manual adjustment mode, wherein the floating platform 4 comprises a platform frame body 401, a frame upper end plate 402 and a bearing adjustment plate 403, the platform frame body 401 is arranged on the lifting plate 301 of the docking lifting mechanism 3, the frame upper end plate 402 is arranged at the upper end of the platform frame body 401, a plurality of rolling ball bearings 404 are arranged on the frame upper end plate 402 in a matrix form, L-shaped limiting plates 4021 are arranged around the frame upper end plate 402, the bearing adjustment plate 403 is arranged on the frame upper end plate 402 and is supported by the rolling ball bearings 404, and the displacement of the bearing adjustment plate 403 is limited by the limiting plates 4021 around the bearing adjustment plate 403. Figure 3 As shown, the positioning support plate 203 at the upper end of the positioning support frame 2 is arranged on the bearing adjustment plate 403.

[0063] As shown in the drawings, Figure 9 As shown in the drawings, in this embodiment, the bearing adjustment plate 403 is provided with a locking pin 405 connected with the frame upper end plate 402 at each corner end, when it is necessary to adjust the position of the bearing adjustment plate 403, the locking pin 405 is pulled up to be separated from the frame upper end plate 402.

[0064] AsFigure 9 As shown in this embodiment, the inner side of the limiting plate 4021 is provided with a buffer pad 4022 that plays a protective role.

[0065] like Figure 9 As shown, in this embodiment, the upper side of the load-bearing adjustment plate 403 is provided with a load-bearing limiting block 4031, such as... Figure 3 As shown, the positioning support plate 203 is disposed between two bearing limiting blocks 4031 to limit displacement.

[0066] The working principle of this embodiment is as follows:

[0067] After the AGV trolley 6 moves the positioning support frame 2 to the positioning platform 5, the operator first releases the bolt fixing connection between the floating platform 4 and the positioning support frame 2, and then the lifting mechanism 3 drives the positioning support frame 2 to descend. During the descent, the operator can fine-tune the position of the positioning support frame 2 at any time according to the alignment of the positioning pin sleeve 202 with the corresponding positioning pin shaft 501 on the positioning platform 5 through the floating platform 4. Figure 9 As shown, the load-bearing adjustment plate 403 on the floating platform 4 is supported by rolling ball bearings 404 on the upper end plate 402 of the frame. This allows the operator to manually adjust the position of the load-bearing adjustment plate 403 after the locking pin 405 is pulled out. The adjustment range of the load-bearing adjustment plate 403 is limited to the area enclosed by the various limiting plates 4021. A load-bearing limiting block 4031 is provided on the upper side of the load-bearing adjustment plate 403, and the positioning support plate 203 is located between two load-bearing limiting blocks 4031. Thus, fine-tuning the load-bearing adjustment plate 403 will cause fine-tuning of the positioning support plate 203. This embodiment allows the load-bearing adjustment plate 403 to move up to 30mm in the horizontal X or Y direction and rotate up to 4° around the vertical Z direction.

[0068] Example 2:

[0069] like Figures 11-13As shown, in this embodiment, the floating platform 4 can also adopt an automatic adjustment method. The floating platform 4 includes a platform frame 401, which is also mounted on the lifting plate 301 of the docking lifting mechanism 3. The upper end of the platform frame 401 is provided with an upper end plate 402, and the upper side of the upper end plate 402 is provided with an X-axis adjustment mechanism 406 and an X-axis sliding plate 407 driven to move by the X-axis adjustment mechanism 406. The upper side of the X-axis sliding plate 407 is provided with a Y-axis adjustment mechanism 408 and a Y-axis sliding plate 407 driven to move by the Y-axis adjustment mechanism 406. The adjustment mechanism 408 drives the Y-axis sliding plate 409 to move. The upper side of the Y-axis sliding plate 409 is provided with a rotating mechanism 410 and a load-bearing adjustment plate 403 driven to rotate by the rotating mechanism 410. The positioning support plate 203 at the upper end of the positioning support frame 2 is located on the load-bearing adjustment plate 403. In this embodiment, a maximum movement of 30mm in the horizontal X or Y direction and a maximum rotation adjustment of 4° around the vertical Z direction can also be achieved. However, all of these adjustments are achieved automatically through the X-axis adjustment mechanism 406, the Y-axis adjustment mechanism 408, and the rotating mechanism 410.

[0070] like Figures 11-12 As shown, in this embodiment, the X-axis adjustment mechanism 406 includes an X-axis lead screw 4062 driven to rotate by an X-axis motor 4061 and an X-axis nut 4063 mounted on the X-axis lead screw 4062. The X-axis nut 4063 is provided with an X-axis connecting seat 4064 fixedly connected to the X-axis sliding plate 407. Rotation of the X-axis lead screw 4062 drives the X-axis nut 4063 to move, thereby driving the X-axis sliding plate 407 to move. Additionally, X-axis slide rails 4065 are provided on both sides of the upper end plate 402 of the frame, and X-axis sliders 4066 are provided on both sides of the X-axis sliding plate 407, respectively cooperating with the corresponding X-axis slide rails 4065, thereby achieving a sliding connection between the X-axis sliding plate 407 and the upper end plate 402 of the frame.

[0071] like Figure 11 and Figure 13 As shown, in this embodiment, the Y-axis adjustment mechanism 408 includes a Y-axis lead screw 4083 driven to rotate by a Y-axis drive assembly and a Y-axis nut 4084 fitted on the Y-axis lead screw 4083. The Y-axis nut 4084 is provided with a Y-axis connecting seat 4085, and the Y-axis connecting seat 4085 is fixedly connected to the Y-axis sliding plate 409. Rotation of the Y-axis lead screw 4083 drives the Y-axis nut 4084 to move, thereby driving the Y-axis sliding plate 409 to move. Additionally, the X-axis sliding plate 407 has Y-axis slide rails 4086 on both sides, and the Y-axis sliding plate 409 has Y-axis sliders 4087 on both sides that respectively cooperate with the corresponding Y-axis slide rails 4086, thereby achieving a sliding connection between the Y-axis sliding plate 409 and the X-axis sliding plate 407.

[0072] like Figure 13As shown, in this embodiment, the Y-direction driving assembly comprises a Y-direction motor 4081 and a right-angle transmission box 4082, the Y-direction motor 4081 drives the Y-direction lead screw 4083 to rotate through torque transmission of the right-angle transmission box 4082, and the Y-direction lead screw 4083 is connected with the Y-direction sliding plate 4084. Figure 10 As shown, the right-angle transmission box 4082 can avoid collision and interference with the positioning legs 201 caused by the rear end of the Y-direction motor 4081 extending out. The right-angle transmission box 4082 is a publicly known technology and a commercially available product.

[0073] As shown, Figure 11 As shown, in this embodiment, the rotating mechanism 410 comprises a rotating adjusting motor 4101, a worm 4102 and a worm wheel 4103, the worm 4102 is engaged with one side of the worm wheel 4103 and is driven to rotate by the rotating adjusting motor 4101, the worm wheel 4103 is fixedly connected with the bearing adjusting plate 403, and the rotation of the worm 4102 drives the rotation of the worm wheel 4103, thereby driving the bearing adjusting plate 403 to rotate and adjust the angle.

[0074] The working principle of this embodiment is as follows:

[0075] This embodiment can control the fine adjustment of the position of the positioning support frame 2 through the operation screen 3012 to ensure the alignment of the positioning pin sleeve 202 with the corresponding positioning pin shaft 501 on the positioning table 5, which further facilitates operation. In addition, this embodiment mainly considers the flexible docking problem between the core machine 1 after completing assembly and the auxiliary equipment of the next assembly station, and therefore can further improve the automation level of the entire assembly production line.

Claims

1. A core machine assembly system, characterized in that: The assembly includes an assembly lifting mechanism (8), a positioning support frame (2), and an AGV trolley (6). A ground well (7) is located beneath the ground (701), and the assembly lifting mechanism (8) is situated within the ground well (7). A lifting platform (805) is located at the upper end of the assembly lifting mechanism (8), and a positioning platform (5) is located on the lifting platform (805). A positioning pin (501) is located on the positioning platform (5). A docking lifting mechanism (3) is located on the AGV trolley (6), and a floating platform (4) is located on the docking lifting mechanism (3). The positioning support frame (2) includes an upper positioning support plate (…). 203), and the lower side of the positioning support plate (203) is supported by the floating platform (4), the upper side of the positioning support plate (203) carries the core machine (1) component, the positioning support plate (203) is provided with positioning legs (201) on both sides, and the lower end of the positioning legs (201) is provided with positioning pin sleeves (202), the positioning pin sleeves (202) cooperate with the corresponding positioning pin shafts (501) on the positioning table (5), and during the assembly process of each component of the core machine (1), the positioning table (5) is driven to descend to the corresponding height by the lifting platform (805) according to the assembly situation of different components; The docking lifting mechanism (3) includes a lifting drive device (302), a drive gear (303), a drive lifting shaft (309), an intermediate gear (304), a driven gear (306), a driven lifting shaft (308), and a lifting plate (301). The drive gear (303) is provided with a drive screw thread sleeve (310) in the middle, and the drive screw thread sleeve (310) is driven to rotate by the lifting drive device (302). The drive lifting shaft (309) is inserted into the drive screw thread sleeve (310). The drive gear (303) and each driven gear (306) are distributed along the circumferential direction of the intermediate gear (304) and are all meshed with the intermediate gear (304). The driven gear (306) is provided with a driven screw thread sleeve (305) in the middle, and the driven lifting shaft (308) is inserted into the corresponding driven screw thread sleeve (305). The floating platform (4) is manually adjustable and includes a platform frame (401) and a frame upper plate (402). The platform frame (401) is mounted on the docking lifting mechanism (3). The frame upper plate (402) is mounted on the upper end of the platform frame (401). Multiple rolling ball bearings (404) are arranged on the frame upper plate (402). Limiting plates (4021) are provided around the frame upper plate (402). A load-bearing adjustment plate (403) is mounted on the frame upper plate (402) and supported by each rolling ball bearing (404). The load-bearing adjustment plate (403) is limited around the frame by each limiting plate (4021). The positioning support plate (203) at the upper end of the positioning support frame (2) is mounted on the load-bearing adjustment plate (403). Each corner of the load-bearing adjustment plate (403) is provided with a locking pin (405) connected to the frame upper plate (402).

2. The core machine assembly system according to claim 1, characterized in that: The assembly lifting mechanism (8) includes a frame (808), an assembly lifting motor (801), a transmission shaft (802), an assembly transmission box (803), a lifting screw (804), and a lifting nut (806). A lifting platform (805) is located inside the frame (808), and both ends of the lifting platform (805) are slidably connected to the corresponding sides of the frame (808). The assembly lifting motor (801) is located at the bottom of the frame (808), and the output shafts on both sides of the assembly lifting motor (801) are... The transmission shaft (802) on the corresponding side is connected to the input end of the corresponding side assembly transmission box (803). The output end of the assembly transmission box (803) is connected to the lower end of the corresponding side lifting screw (804). The upper end of the frame (808) is provided with mounting beams (807) on both sides. The upper end of the lifting screw (804) is rotatably mounted on the mounting beam (807) on the corresponding side. The lifting screw (804) is fitted with a lifting nut (806), and the lifting nut (806) is located in the lifting platform (805).

3. The core machine assembly system according to claim 2, characterized in that: The housing of the lifting drive device (302) is provided with a motor (3021), a first gear (3022) and a second gear (3023), wherein the first gear (3022) and the second gear (3023) mesh and are driven to rotate by the motor (3021), and the second gear (3023) is fitted on the active screw thread sleeve (310).

4. The core machine assembly system according to claim 1, characterized in that: The positioning support plate (203) at the upper end of the positioning support frame (2) is provided with a workpiece connector (2031).

5. The core machine assembly system according to claim 1, characterized in that: The inner side of the limiting plate (4021) is provided with a buffer pad (4022); the upper side of the bearing adjustment plate (403) is provided with a bearing limiting block (4031), and the positioning support plate (203) is located between the two bearing limiting blocks (4031).

6. The core machine assembly system according to claim 1, characterized in that: The floating platform (4) is an automatic adjustment method instead of a manual adjustment method. It includes a platform frame (401) and the platform frame (401) is mounted on the docking lifting mechanism (3). The upper end of the platform frame (401) is provided with an upper plate (402). The upper side of the upper plate (402) is provided with an X-axis adjustment mechanism (406) and an X-axis sliding plate (407) driven to move by the X-axis adjustment mechanism (406). The upper side of the X-axis sliding plate (407) is provided with a Y-axis adjustment mechanism (408) and a Y-axis sliding plate (409) driven to move by the Y-axis adjustment mechanism (408). The upper side of the Y-axis sliding plate (409) is provided with a rotating mechanism (410) and a load-bearing adjustment plate (403) driven to rotate by the rotating mechanism (410).

7. The core machine assembly system according to claim 6, characterized in that: The X-axis adjustment mechanism (406) includes an X-axis lead screw (4062) driven to rotate by an X-axis motor (4061) and an X-axis nut (4063) fitted on the X-axis lead screw (4062). The X-axis nut (4063) is provided with an X-axis connecting seat (4064) and is fixedly connected to the X-axis sliding plate (407). The two sides of the X-axis sliding plate (407) are slidably connected to the two sides of the upper end plate (402) of the frame. The Y-axis adjustment mechanism (408) includes a Y-axis lead screw (4083) driven to rotate by a Y-axis drive assembly and a Y-axis nut (4084) fitted on the Y-axis lead screw (4083). The Y-axis nut (4084) is provided with a Y-axis connecting seat (4085), and the Y-axis connecting seat (4085) is fixedly connected to the Y-axis sliding plate (409). The two sides of the Y-axis sliding plate (409) are slidably connected to the two sides of the X-axis sliding plate (407). The rotating mechanism (410) includes a rotary adjustment motor (4101), a worm (4102) and a worm wheel (4103), wherein the worm (4102) meshes with the worm wheel (4103) on one side and is driven to rotate by the rotary adjustment motor (4101), and the worm wheel (4103) is fixedly connected to the bearing adjustment plate (403).

8. An assembly method for a core machine assembly system according to claim 1, characterized in that: Includes the following steps: Step 1: The positioning platform (5) is first lifted by the lifting platform (805) to a position level with the ground (701), and then the AGV trolley (6) together with the positioning support frame (2) moves onto the positioning platform (5); Step 2: Release the fixed connection between the floating platform (4) and the positioning support frame (2), and then connect the lifting mechanism (3) to drive the positioning support frame (2) to descend until the positioning pin sleeves (202) at the lower end of the positioning legs (201) on both sides engage with the corresponding positioning pin shafts (501) on the positioning platform (5); Step 3: The docking lifting mechanism (3) continues to descend so that the floating platform (4) is separated from the positioning support frame (2), and then the AGV trolley (6) together with the docking lifting mechanism (3) exits the positioning support frame (2); Step 4: Fix the intermediate unit of the core machine (1) to the positioning support plate (203) at the upper end of the positioning support frame (2); Step 5: Install the high-pressure rotor, high-pressure casing, combustion chamber and high-pressure turbine in sequence. During the assembly process, the lifting platform (805) drives the positioning platform (5) to descend to the set height according to the different components. Step 6: After the core machine (1) is assembled, the AGV trolley (6) moves back into the positioning support frame (2), and then the docking lifting mechanism (3) is started to lift the positioning support frame (2) and the core machine (1) together until the positioning pin sleeve (202) and the positioning pin shaft (501) are separated from the set distance. Then the floating platform (4) is reconnected to the positioning support frame (2). Step 7: The AGV trolley (6) moves the positioning support frame (2) and the core machine (1) to the next assembly station.

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