Nut dismounting and mounting device and method for long-axis part

Abstract

The invention discloses a nut dismounting and mounting device for a long-axis part, and belongs to the technical field of aero-engine part assembly.The nut dismounting and mounting device comprises a mounting frame, a torque multiplier, a first support, a first wrench, an anti-rotation supporting plate, a connecting supporting plate, a supporting ring, a second wrench and a second support, the first support is used for being connected to the mounting frame, and the anti-rotation supporting plate is connected with a second nut; the torque multiplier is used for driving the output shaft to rotate through the first wrench so as to assemble or disassemble the second nut; the second support is used for replacing the first support, the supporting ring is used for replacing the anti-rotation supporting plate, the supporting ring is used for being connected with the mounting frame through the first end and fixedly supporting the torque multiplier through the second end, and the second wrench is used for replacing the first wrench and being connected with the spline shaft sleeve on the output shaft. The torque multiplier is further used for driving the output shaft to rotate through the second wrench so as to assemble or disassemble the first nut. According to the invention, the second nut and the first nut on the output shaft can be quickly assembled and disassembled, and the assembly quality can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft engine parts assembly, and in particular, to a nut disassembly and assembly device for a long shaft part. In addition, the present application also relates to a nut disassembly and assembly method including the nut disassembly and assembly device for the long shaft part. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present application. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present application.

[0003] The aircraft engine output shaft assembly is a key component that connects the various internal components of the engine, and plays an important role in transmitting power, reducing shock, and reducing axial loads.

[0004] The output shaft of a certain type of turboshaft engine is 1.1m long. It is necessary to fit bearings, spline sleeves and other components on the output shaft by interference fitting and tighten them with the first nut 100 and the second nut 200 (see Figure 1 ). Because the axial length of the output shaft part is long, the second nut 200 and the anti-rotation spline sleeve are at the same end, and the anti-rotation part is an internal spline, which makes it difficult to fix when tightening, and the assembly is difficult. There are problems such as high labor intensity of manual assembly and difficulty in improving assembly quality.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The inventor found through research that it is difficult to directly assemble the first nut and the second nut onto the output shaft, and it is inconvenient for workers to operate. It requires a lot of strength to tighten the nuts, and the operating space is not spacious enough. However, if the first nut and the second nut are fixed separately and the output shaft is rotated in the opposite direction, there is a larger operating space, and it is easier to rotate the output shaft, which greatly reduces the labor intensity and is conducive to improving the assembly quality.

[0007] In view of at least one of the above technical problems, the present application provides a nut disassembly and assembly device for a long shaft part, which can support and limit the output shaft in the vertical direction through a mounting frame and a first support, and after fixing the second nut, the output shaft is driven to rotate through a torque multiplier to tighten and assemble the second nut to the output shaft, or loosen and disassemble it from the output shaft; in addition, after supporting and fixing the first nut on the output shaft through the mounting frame and the second support, the output shaft is driven to rotate through a torque multiplier to tighten and assemble the first nut to the output shaft, or loosen and disassemble it from the output shaft, thereby realizing rapid assembly and disassembly of the second nut and the first nut.

[0008] At the same time, the present application provides a method for disassembling and assembling a nut of a long shaft part.

[0009] According to one aspect of the present application, a nut disassembly and assembly device for a long shaft part is provided, which is used to assemble a first nut and a second nut onto or remove the first nut from an output shaft, respectively. The output shaft is provided with a bearing and a spline sleeve. The nut disassembly and assembly device for the long shaft part comprises a mounting frame, a torque multiplier, a first disassembly and assembly assembly, and a second disassembly and assembly assembly. The mounting frame is used to support the output shaft vertically, and the first disassembly and assembly assembly and the second disassembly and assembly assembly are used to be replaceably mounted on the mounting frame.

[0010] The first disassembly and assembly component includes a first support, a first wrench and an anti-rotation support plate, the first support is used to be connected to the mounting frame to support the outer ring of the bearing on the output shaft, the first end of the anti-rotation support plate is fixedly connected to the mounting frame, the second end of the anti-rotation support plate is used to be fixedly connected to the second nut, the second end of the anti-rotation support plate is also used to fix and support the torque multiplier, the first end of the first wrench is used to be connected to the spline sleeve on the output shaft, the second end of the first wrench is used to be clamped with the torque multiplier, and the torque multiplier is used to drive the output shaft to rotate through the first wrench to assemble or disassemble the second nut;

[0011] The second disassembly and assembly component includes a support ring, a second wrench and a second support, the second support is used to be connected to the mounting frame and is fixedly connected to the first nut by the first end of the second support, the support ring is used to be connected to the mounting frame, the support ring is used to be connected to the mounting frame through the first end and fixedly support the torque multiplier through the second end, the second wrench is used to be connected to the spline sleeve on the output shaft, the second end of the second wrench is used to clamp with the torque multiplier, and the torque multiplier is also used to drive the output shaft to rotate through the second wrench to assemble or disassemble the first nut.

[0012] In some embodiments of the present application, the mounting frame includes a first support plate, a second support plate and a connecting column. The first support plate and the second support plate are arranged parallel to each other in the vertical direction. The connecting column is used to connect and fix the first support plate and the second support plate. A first limiting groove is provided on the first support plate. The first limiting groove is used to install an anti-rotation support plate or a support ring. A second limiting groove is provided on the second support plate opposite to the first limiting groove. The second limiting groove is used to limit and fix the output shaft in the vertical direction.

[0013] In some embodiments of the present application, a first mounting platform is provided at the first end of the first support, and the first mounting platform is connected to the second support plate by bolts. A slot is provided on the end face of the second end of the first support, and the slot is used to position the lug on the outer ring when the first support supports the outer ring of the bearing.

[0014] In some embodiments of the present application, the anti-rotation support plate includes a support plate body, a second mounting platform and a first protruding tooth. The support plate body is a hollow cylindrical structure. The top of the support plate body is provided with a second mounting platform. The second mounting platform is used to be connected to the first support plate by bolts. A plurality of first protruding teeth are provided in an annular array at the bottom end of the support plate body. The first protruding teeth are used to engage with a second limiting groove preset on the second nut.

[0015] In some embodiments of the present application, the second support is a hollow cylindrical structure, and a fifth mounting platform is provided at the bottom end of the second support. The fifth mounting platform is used to be connected to the second support plate by bolts, and a plurality of second protruding teeth are provided in an annular array at the top end of the second support. The second protruding teeth are used to engage with a first limiting groove preset on the first nut.

[0016] In some embodiments of the present application, a fourth mounting platform is provided at the bottom end of the support ring, and the fourth mounting platform is used to be connected to the first support plate by bolts. The torque multiplier is arranged through the support ring, and a second hexagonal hole is provided at the top end of the support ring. The second hexagonal hole is used to be engaged with a preset hexagonal head on the torque multiplier to fix and support the torque multiplier.

[0017] In some embodiments of the present application, the nut disassembly and assembly device of the long axis part also includes a connecting support plate, the first end of the connecting support plate is connected to the anti-rotation support plate, the second end of the connecting support plate is used to fix and support the torque multiplier, the connecting support plate is a hollow cylindrical structure, and the bottom end of the connecting support plate is provided with a third mounting platform, the third mounting platform is used to connect with the anti-rotation support plate through a locking member, the torque multiplier passes through the connecting support plate and the anti-rotation support plate in sequence, and a first hexagonal hole is opened at the top of the connecting support plate, and the first hexagonal hole is used to engage with the hexagonal head preset on the torque multiplier to fix and support the torque multiplier.

[0018] In some embodiments of the present application, a first external spline is provided on the bottom outer wall of the first wrench, and the first external spline is used to cooperate with the internal spline of the spline sleeve on the output shaft. A first square hole is provided on the top of the first wrench, and the first square hole is used to clamp with a square head preset on the torque multiplier; a second external spline is provided on the bottom outer wall of the second wrench, and the second external spline is used to cooperate with the internal spline of the spline sleeve on the output shaft. A second square hole is provided on the top of the second wrench, and the second square hole is used to clamp with a square head preset on the torque multiplier.

[0019] In some embodiments of the present application, the nut disassembly and assembly device of the long axis part also includes an adapter, which is used to replace the torque multiplier and be connected with the first wrench or the second wrench. An adapter square head is provided at the bottom end of the adapter, and the adapter square head is used to be connected with the first square hole of the first wrench or the second square hole of the second wrench. A third square hole is provided at the top end of the adapter, and the third square hole is used to be connected with the torque wrench.

[0020] In addition, the present application also discloses a method for disassembling and assembling a nut of a long shaft part, which uses the above-mentioned nut disassembling and assembling device for a long shaft part, and comprises the following steps:

[0021] When the second nut needs to be assembled, first tighten the second nut to the preset installation position on the output shaft, connect the first support to the mounting frame, place the small end of the output shaft downward on the first support, and support the outer ring of the bearing on the output shaft through the first support, check the state of the output shaft and ensure that the output shaft can rotate freely; put the first wrench into the spline sleeve on the output shaft; connect the first end of the anti-rotation support plate to the mounting frame, and connect it to the second nut through the second end of the anti-rotation support plate; connect the first end of the connecting support plate to the anti-rotation support plate, and fix the torque multiplier through the second end of the connecting support plate, and clamp the torque multiplier to the second end of the first wrench; set the torque of the torque multiplier to 1 / 16 of the actual required tightening torque, twist the torque multiplier to drive the first wrench and the output shaft to rotate, and then assemble and tighten the second nut on the output shaft;

[0022] When the second nut needs to be disassembled and removed from the output shaft, the second nut can be loosened and removed by twisting the torque multiplier in the opposite direction;

[0023] When the first nut needs to be assembled, the first nut is screwed with the pre-tightening sleeve set in the preset installation position on the output shaft, the second support replaces the first support and is installed on the mounting frame, the small end of the output shaft is placed downward on the second support and is connected and fixed with the first nut through the first end of the second support; the support ring replaces the anti-rotation support plate and is connected to the mounting frame, and the torque multiplier is fixed and supported by the support ring; the second wrench replaces the first wrench and is inserted into the spline sleeve on the output shaft; the torque multiplier is clamped with the second end of the second wrench; the torque of the torque multiplier is set to 1 / 16 of the actual required tightening torque, the torque multiplier is screwed to drive the second wrench and the output shaft to rotate, and then the first nut is assembled and tightened on the output shaft;

[0024] When the first nut needs to be disassembled and removed from the output shaft, the first nut can be loosened and removed by twisting the torque multiplier in the opposite direction.

[0025] This application has the following beneficial effects:

[0026] The nut disassembly and assembly device of the long-axis part of the present application supports and limits the output shaft in the vertical direction through the mounting frame and the first support, and does not interfere with the free rotation of the output shaft, and connects and fixes the second nut through the anti-rotation support plate installed on the mounting frame, and supports the torque multiplier through the anti-rotation support plate, and then uses the torque multiplier to drive the output shaft to rotate through the first wrench, so that the second nut is tightened and fixed to the output shaft, or the second nut is loosened and disassembled from the output shaft; when the first nut needs to be assembled or disassembled, it is only necessary to replace the first support with the second support and install it on the mounting frame, fix the first nut through the second support, and at the same time replace the anti-rotation support plate with a support ring and connect it to the mounting frame, support the torque multiplier through the support ring, and then use the torque multiplier to drive the output shaft to rotate through the second wrench, so that the first nut is tightened and fixed to the output shaft, or the first nut is loosened and disassembled from the output shaft. In this way, the second nut and the first nut can be assembled or disassembled by rotating the output shaft in the opposite direction. Workers only need to operate the torque multiplier, which has a large operating space, greatly reduces labor intensity and labor, and can effectively improve the quality of assembly.

[0027] The nut disassembly and assembly method of the long-axis part of the present application can realize the assembly or disassembly of the second nut and the first nut on the output shaft of the long-axis part in turn, and the output shaft is supported in the vertical direction by the mounting frame. It is only necessary to alternately install the first support and the second support on the mounting frame, and at the same time replace the anti-rotation support plate and the connecting support plate with the support ring, and use the second wrench to replace the first wrench, so that the second nut and the first nut can be assembled or disassembled in turn. The output shaft is rotated by twisting, which greatly reduces the difficulty and labor intensity of the workers' operation, which is conducive to improving the efficiency of assembly. The mounting frame can be universal, and it only needs to replace the support and the tightening part to be applicable to the assembly and disassembly of nuts of other models of long-axis parts.

[0028] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a schematic diagram of assembling a bearing, a spline sleeve, a first nut 100 and a second nut 200 on the output shaft of the present application;

[0031] Figure 2 It is a schematic diagram of the installation of the first support and the first wrench of the preferred embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the support of the output shaft by the first support in the preferred embodiment of the present application;

[0033] Figure 4 It is a schematic diagram of the installation of the anti-rotation support plate of the preferred embodiment of the present application;

[0034] Figure 5 It is a schematic diagram of the installation of the second support and the second wrench of the preferred embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of the support of the output shaft by the second support in the preferred embodiment of the present application;

[0036] Figure 7 It is a schematic diagram of the installation of the support ring of the preferred embodiment of the present application;

[0037] Figure 8 It is a structural schematic diagram of a mounting frame of a preferred embodiment of the present application;

[0038] Fig. 9 is a structural schematic diagram of the first support in a preferred embodiment of the present application;

[0039] Fig.10 It is a structural schematic diagram of a first wrench in a preferred embodiment of the present application;

[0040] Fig.11 It is a schematic diagram of the internal structure of the first wrench in the preferred embodiment of the present application;

[0041] Fig.12 It is a structural schematic diagram of an anti-rotation support plate of a preferred embodiment of the present application;

[0042] Fig.13 This is a schematic diagram of the internal structure of the anti-rotation support plate of the preferred embodiment of the present application;

[0043] Fig.14 This is a structural schematic diagram of a connecting support plate of a preferred embodiment of the present application;

[0044] Fig.15 It is a schematic diagram of the structure of the support ring of the preferred embodiment of the present application;

[0045] Fig.16 is a structural schematic diagram of a second wrench in a preferred embodiment of the present application;

[0046] Fig.17 is a schematic structural diagram of a second support in a preferred embodiment of the present application;

[0047] Fig.18 is a schematic diagram of an anti-rotation support plate and an adapter in a preferred embodiment of the present application;

[0048] Fig.19 This is a schematic diagram of the structure of the adapter of the preferred embodiment of the present application;

[0049] Legend: 100, first nut; 200, second nut; 300, mounting frame; 301, first support plate; 302, second support plate; 303, connecting column; 304, first limiting groove; 305, second limiting groove; 400, assembly vehicle; 500, torque multiplier; 600, adapter; 601, third square hole; 602, adapter square head; 1, first support; 11, first mounting platform; 12, slot; 2, first wrench; 21 , first external spline; 22, first square hole; 3, anti-rotation support plate; 31, support plate body; 32, second mounting platform; 33, first convex tooth; 4, locking piece; 5, connecting support plate; 51, third mounting platform; 52, first hexagonal hole; 6, support ring; 61, fourth mounting platform; 62, second hexagonal hole; 7, second wrench; 71, second square hole; 72, second external spline; 8, second support; 81, fifth mounting platform; 82, second convex tooth. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0051] Figure 1 It is a schematic diagram of assembling a bearing, a spline sleeve, a first nut 100 and a second nut 200 on the output shaft of the present application; Figure 2 It is a schematic diagram of the installation of the first support and the first wrench of the preferred embodiment of the present application;

[0052] Figure 3This is a schematic diagram of the support of the output shaft by the first support in the preferred embodiment of the present application; Figure 4 It is a schematic diagram of the installation of the anti-rotation support plate of the preferred embodiment of the present application; Figure 5 It is a schematic diagram of the installation of the second support and the second wrench of the preferred embodiment of the present application; Figure 6 It is a schematic diagram of the support of the output shaft by the second support in the preferred embodiment of the present application; Figure 7 It is a schematic diagram of the installation of the support ring of the preferred embodiment of the present application; Figure 8 It is a structural schematic diagram of a mounting frame of a preferred embodiment of the present application; Fig. 9 is a structural schematic diagram of the first support in a preferred embodiment of the present application; Fig.10 It is a structural schematic diagram of a first wrench in a preferred embodiment of the present application; Fig.11 It is a schematic diagram of the internal structure of the first wrench in the preferred embodiment of the present application; Fig.12 It is a structural schematic diagram of an anti-rotation support plate of a preferred embodiment of the present application; Fig.13 This is a schematic diagram of the internal structure of the anti-rotation support plate of the preferred embodiment of the present application; Fig.14 This is a structural schematic diagram of a connecting support plate of a preferred embodiment of the present application; Fig.15 It is a schematic diagram of the structure of the support ring of the preferred embodiment of the present application; Fig.16 is a structural schematic diagram of a second wrench in a preferred embodiment of the present application; Fig.17 is a schematic structural diagram of a second support in a preferred embodiment of the present application; Fig.18 is a schematic diagram of an anti-rotation support plate and an adapter in a preferred embodiment of the present application; Fig.19 It is a schematic diagram of the structure of the adapter of the preferred embodiment of the present application.

[0053] A nut disassembly and assembly device for a long shaft part, used for respectively assembling a first nut 100 and a second nut 200 onto or disassembling the first nut 100 and the second nut 200 onto or from an output shaft, wherein the output shaft is provided with a bearing and a spline sleeve, and the nut disassembly and assembly device for a long shaft part comprises a mounting frame 300, a torque multiplier 500, a first disassembly and assembly assembly, and a second disassembly and assembly assembly, wherein the mounting frame 300 is used for vertically supporting the output shaft, and the first disassembly and assembly assembly and the second disassembly and assembly assembly are used for being replaceably mounted on the mounting frame 300;

[0054] The first disassembly and assembly component includes a first support 1, a first wrench 2 and an anti-rotation support plate 3, the first support 1 is used to be connected to the mounting frame 300 to support the outer ring of the bearing on the output shaft, the first end of the anti-rotation support plate 3 is fixedly connected to the mounting frame 300, the second end of the anti-rotation support plate 3 is used to be fixedly connected to the second nut 200, the second end of the anti-rotation support plate 3 is also used to fix and support the torque multiplier 500, the first end of the first wrench 2 is used to be connected to the spline sleeve on the output shaft, the second end of the first wrench 2 is used to be clamped with the torque multiplier 500, and the torque multiplier 500 is used to drive the output shaft to rotate through the first wrench 2 to assemble or disassemble the second nut 200;

[0055] The second disassembly and assembly component includes a support ring 6, a second wrench 7 and a second support 8. The second support 8 is used to be connected to the mounting frame 300 and is connected and fixed to the first nut 100 with the first end of the second support 8. The support ring 6 is used to be connected to the mounting frame 300. The support ring 6 is used to be connected to the mounting frame 300 through the first end and to fix the torque multiplier 500 through the second end. The second wrench 7 is used to be connected to the spline sleeve on the output shaft. The second end of the second wrench 7 is used to clamp with the torque multiplier 500. The torque multiplier 500 is also used to drive the output shaft to rotate through the second wrench 7 to assemble or disassemble the first nut 100.

[0056] The bearing on the output shaft here is preferably an angular contact ball bearing, which can withstand radial loads. The first support 1 is supported by the outer ring of the bearing to ensure that the output shaft can rotate freely in the radial direction.

[0057] In some embodiments, the mounting frame 300 is used to be mounted on an assembly vehicle 400 , and the assembly vehicle 400 can provide support and fixation for the mounting frame 300 , and can drive the mounting frame 300 to move flexibly.

[0058] The nut disassembly and assembly device of the long shaft part of the present application supports and limits the output shaft in the vertical direction through the mounting frame 300 and the first support 1, and does not interfere with the free rotation of the output shaft, and connects and fixes the second nut 200 through the anti-rotation support plate 3 installed on the mounting frame 300, and supports the torque multiplier 500 through the anti-rotation support plate 3, and then uses the torque multiplier 500 to drive the output shaft to rotate through the first wrench 2, so that the second nut 200 is tightened and fixed to the output shaft, or the second nut 200 is loosened from the output shaft. Solution: When the first nut 100 needs to be assembled or disassembled, it is only necessary to replace the first support 1 with the second support 8 and install it on the mounting frame 300, fix the first nut 100 through the second support 8, and replace the anti-rotation support plate 3 with the support ring 6 and connect it to the mounting frame 300, support the torque multiplier 500 through the support ring 6, and then use the torque multiplier 500 to drive the output shaft to rotate through the second wrench 7 to tighten and fix the first nut 100 to the output shaft, or loosen and disassemble the first nut 100 from the output shaft. In this way, the second nut 200 and the first nut 100 can be assembled or disassembled by rotating the output shaft in the opposite direction. The worker only needs to operate the torque multiplier 500, which has a large operating space, greatly reduces the labor intensity and labor, and can effectively improve the quality of assembly.

[0059] Preferably, please refer to Figure 2 , 7 As shown, the mounting frame 300 includes a first support plate 301, a second support plate 302 and a connecting column 303. The first support plate 301 and the second support plate 302 are arranged in parallel in the vertical direction. The connecting column 303 is used to connect and fix the first support plate 301 and the second support plate 302. The first support plate 301 is provided with a first limiting groove 304, and the first limiting groove 304 is used to install the anti-rotation support plate 3 or the support ring 6. The second support plate 302 is provided with a second limiting groove 305 opposite to the first limiting groove 304, which is used to limit and fix the output shaft in the vertical direction.

[0060] It can be understood that the mounting frame 300 is a double-layer structure as a whole, with the first support plate 301 and the second support plate 302 arranged in parallel in the vertical direction, and the upper first support plate 301 and the lower second support plate 302 are connected and fixed by the connecting column 303, so as to realize the vertical limitation and support of the output shaft part with a longer length by the mounting frame 300, ensure that the output shaft is in a vertical state during the assembly process, realize the good stress condition of the part, and prevent the deformation of the long shaft; and the mounting frame 300 provides the installation boundary of the first support 1, the anti-rotation support plate 3, the support ring 6 and the second support 8, so that they can be combined to form a larger operating space, which is convenient for workers to operate.

[0061] Preferably, please refer to Figure 2 , 3As shown in , 4 and 8, a first mounting platform 11 is provided at the first end of the first support 1, and the first mounting platform 11 is connected to the second support plate 302 by bolts. A slot 12 is provided on the end face of the second end of the first support 1, and the slot 12 is used to position the lug on the outer ring when the first support 1 supports the outer ring of the bearing.

[0062] It is understandable that the first support 1 can be fastened to the second support plate 302 by the first mounting platform 11 in conjunction with the bolt connection, so as to achieve a stable installation of the first support 1. Since the first support 1 only needs to support and limit the output shaft in the vertical direction, and in order not to affect the rotation of the output shaft, the outer ring of the bearing on the output shaft is supported by the second end of the first support 1, that is, the top of the first support 1, and the groove 12 at the second end of the first support 1 can also avoid the lug on the outer ring, and play the role of the lug when supporting the outer ring of the bearing, thereby ensuring the stability of the support for the outer ring.

[0063] Preferably, please refer to Figure 2 , 3 As shown in , 4, 11 and 12, the anti-rotation support plate 3 includes a support plate body 31, a second mounting platform 32 and a first protruding tooth 33. The support plate body 31 is a hollow cylindrical structure. The top of the support plate body 31 is provided with a second mounting platform 32. The second mounting platform 32 is used to be connected to the first support plate 301 by bolts. A plurality of first protruding teeth 33 are provided in an annular array at the bottom end of the support plate body 31. The first protruding teeth 33 are used to engage with a second limiting groove preset on the second nut 200.

[0064] It can be understood that the anti-rotation support plate 3 is fixedly mounted on the first support plate 301 of the mounting frame 300, and the second nut 200 is clamped by the first protruding tooth 33 at the bottom end of the anti-rotation support plate 3 to limit the second nut 200, so that the output shaft can rotate while the second nut 200 is relatively stationary, and the second nut 200 can be tightened on the output shaft.

[0065] It should be noted that since the second nut 200 and the spline sleeve are at the same end of the output shaft, it is difficult to fix them when tightening, and the operating space is small, the assembly is difficult, and it is not convenient to directly twist the second nut 200. Therefore, the present application limits the second nut 200 by the anti-rotation support plate 3, and transforms it into twisting the output shaft. Not only does it have a large operating space and is easier to operate, it is also beneficial to improve the quality of assembly.

[0066] Preferably, please refer to Figure 5 , 6As shown in Figures 7 and 17, the second support 8 is a hollow cylindrical structure. A fifth mounting platform 81 is provided at the bottom end of the second support 8. The fifth mounting platform 81 is used to be connected to the second support plate 302 by bolts. A plurality of second protruding teeth 82 are provided in an annular array at the top end of the second support 8. The second protruding teeth 82 are used to engage with the first limiting groove preset on the first nut 100.

[0067] It is understandable that when the first nut 100 needs to be assembled or disassembled, the first nut 100 needs to be fixed. Since the output shaft is supported on the mounting frame 300 with a vertical limit, the first nut 100 is located below the second nut 200. At this time, the second support 8 replaces the first support 1 and is installed on the second support plate 302. The second protruding teeth 82 at the top of the second support 8 can be snapped with the first nut 100 to limit the first nut 100. At this time, the output shaft can be rotated to assemble the first nut 100 onto or remove it from the output shaft. Overall, the structure of the tooling is relatively simple, the operating space is large, and the operating intensity is greatly reduced. At the same time, the assembly vehicle 400 and the mounting frame 300 can be used interchangeably. Only the support and the tightening part need to be replaced to be applicable to the assembly and disassembly of nuts of other types of long shaft parts.

[0068] Preferably, please refer to Fig.14 As shown, a fourth mounting platform 61 is provided at the bottom end of the support ring 6, and the fourth mounting platform 61 is used to be connected to the first support plate 301 by bolts. The torque multiplier 500 is arranged through the support ring 6, and a second hexagonal hole 62 is opened at the top of the support ring 6. The second hexagonal hole 62 is used to be connected with the preset hexagonal head on the torque multiplier 500 to fix and support the torque multiplier 500.

[0069] It can be understood that when there is no need to limit and fix the second nut 200, the anti-rotation support plate 3 is replaced by the support ring 6 to be installed on the first support plate 301 of the mounting frame 300. The support ring 6 does not interfere with the second nut 200, and the torque multiplier 500 is fixedly supported by the support ring 6, which makes it convenient for workers to operate the torque multiplier 500. The support ring 6 improves the accuracy of the vertical position of the torque multiplier 500, which is beneficial to improve the stability and accuracy of the operation and improve the quality of assembly.

[0070] Preferably, please refer to Figure 2 , 3As shown in , 13, the nut disassembly and assembly device of the long axis part also includes a connecting support plate 5, the first end of the connecting support plate 5 is connected to the anti-rotation support plate 3, the second end of the connecting support plate 5 is used to fix and support the torque multiplier 500, the connecting support plate 5 is a hollow cylindrical structure, the bottom end of the connecting support plate 5 is provided with a third mounting platform 51, the third mounting platform 51 is used to connect with the anti-rotation support plate 3 through the locking member 4, the torque multiplier 500 is sequentially arranged through the connecting support plate 5 and the anti-rotation support plate 3, the top end of the connecting support plate 5 is provided with a first hexagonal hole 52, the first hexagonal hole 52 is used to be connected with the preset hexagonal head on the torque multiplier 500 to fix and support the torque multiplier 500.

[0071] It can be understood that in order to strengthen the stable support for the torque multiplier 500, a connecting support plate 5 is fixedly arranged on the top of the anti-rotation support plate 3, and the first hexagonal hole 52 at the top of the connecting support plate 5 is snap-fitted with the preset hexagonal head on the torque multiplier 500 to achieve enhanced limiting support for the torque multiplier 500; at the same time, the connecting support plate 5 can be installed and fixed through the third mounting platform 51, and has good adaptability, and can realize flexible combination, rapid disassembly and replacement of the connecting support plate 5, so as to improve the overall adaptability of the device by replacing connecting support plates 5 of different sizes to limit and cooperate with boosters of different specifications.

[0072] Preferably, please refer to Fig. 9 , 10 As shown in Figures 1 and 15, a first external spline 21 is provided on the bottom outer wall of the first wrench 2, and the first external spline 21 is used to cooperate with the internal spline of the spline sleeve on the output shaft. A first square hole 22 is provided on the top of the first wrench 2, and the first square hole 22 is used to be clamped with a square head preset on the torque multiplier 500; a second external spline 72 is provided on the bottom outer wall of the second wrench 7, and the second external spline 72 is used to cooperate with the internal spline of the spline sleeve on the output shaft. A second square hole 71 is provided on the top of the second wrench 7, and the second square hole 71 is used to be clamped with a square head preset on the torque multiplier 500.

[0073] It can be understood that the structures of the first wrench 2 and the second wrench 7 are similar, but the specific sizes are different. Since the support ring 6 and the anti-rotation support plate 3 need to play different roles, the structure of the support ring 6 as a whole is different from that of the anti-rotation support plate 3. Since the torque multiplier 500 can be directly supported by the support ring 6, the use of the connecting support plate 5 can be eliminated. This causes the height and other dimensions of the second wrench 7 to be different from those of the first wrench 2. In order to better cooperate with the torque multiplier 500, when the second nut 200 and the first nut 100 are assembled or disassembled respectively, they are connected to the output shaft through the first wrench 2 and the second wrench 7 respectively; in addition, the setting of the first wrench 2 and the second wrench 7 can also be error-proof. By setting different marks on the first wrench 2 and the second wrench 7, it is convenient to apply the correct torque to the second nut 200 and the first nut 100 respectively to ensure the accuracy of assembly.

[0074] Preferably, please refer to Fig.18 , 19 As shown, the nut disassembly and assembly device of the long shaft part also includes an adapter 600, which is used to replace the torque multiplier 500 and be connected with the first wrench 2 or the second wrench 7. The bottom end of the adapter 600 is provided with an adapter square head 602, which is used to be connected with the first square hole 22 of the first wrench 2 or the second square hole 71 of the second wrench 7. The top end of the adapter 600 is provided with a third square hole 601, which is used to be connected with the torque wrench.

[0075] It is understandable that a torque wrench can be used instead of the torque multiplier 500. In this case, an adapter 600 can be used to connect the torque wrench to the first wrench 2 or the second wrench 7 to solve the assembly problem when there is no torque multiplier 500, thereby improving the practicality and adaptability of the device.

[0076] In addition, the present application also discloses a method for disassembling and assembling a nut of a long shaft part, which uses the above-mentioned nut disassembling and assembling device for a long shaft part, and comprises the following steps:

[0077] S100, when the second nut 200 needs to be assembled, firstly, the second nut 200 is screwed into the pre-tightening sleeve and set at the preset installation position on the output shaft, the first support 1 is connected to the mounting frame 300, the output shaft is placed on the first support 1 with the small end facing downward, and the outer ring of the bearing on the output shaft is supported by the first support 1, and the state of the output shaft is checked to ensure that the output shaft can rotate freely;

[0078] When it is necessary to assemble the second nut 200, first screw the second nut 200 into the preset installation position on the output shaft, connect the first support 1 to the mounting frame 300, place the small end of the output shaft downward on the first support 1, and support the outer ring of the bearing on the output shaft through the first support 1, check the state of the output shaft, and ensure that the output shaft can rotate freely; put the first wrench 2 into the spline sleeve on the output shaft; connect the first end of the anti-rotation support plate 3 to the mounting frame 300, and connect it to the second nut 200 through the second end of the anti-rotation support plate 3; connect the first end of the connecting support plate 5 to the anti-rotation support plate 3, and fix the torque multiplier 500 through the second end of the connecting support plate 5, and clamp the torque multiplier 500 to the second end of the first wrench 2; set the torque of the torque multiplier 500 to 1 / 16 of the actual required tightening torque, screw the torque multiplier 500 to drive the first wrench 2 and the output shaft to rotate, and then assemble and tighten the second nut 200 on the output shaft;

[0079] When the second nut 200 needs to be disassembled and removed from the output shaft, the second nut 200 can be loosened and removed by twisting the torque multiplier 500 in the opposite direction;

[0080] When it is necessary to assemble the first nut 100, screw the first nut 100 to the pre-tightening sleeve set in the preset installation position on the output shaft, replace the first support 1 with the second support 8 and install it on the mounting frame 300, place the small end of the output shaft downward on the second support 8 and connect and fix it with the first nut 100 through the first end of the second support 8; replace the anti-rotation support plate 3 with the support ring 6 and connect it to the mounting frame 300, and fix and support the torque multiplier 500 through the support ring 6; replace the first wrench 2 with the second wrench 7 and put it into the spline sleeve on the output shaft; clamp the torque multiplier 500 with the second end of the second wrench 7; set the torque of the torque multiplier 500 to 1 / 16 of the actual required tightening torque, screw the torque multiplier 500 to drive the second wrench 7 and the output shaft to rotate, and then assemble and tighten the first nut 100 on the output shaft;

[0081] When the first nut 100 needs to be disassembled and removed from the output shaft, the first nut 100 can be loosened and removed by twisting the torque multiplier 500 in the reverse direction.

[0082] The nut assembly and disassembly method of the long-axis part of the present application can sequentially realize the assembly or disassembly of the second nut 200 and the first nut 100 on the output shaft of the long-axis part, and the output shaft is supported in the vertical direction by the mounting frame 300. It is only necessary to alternately install the first support 1 and the second support 8 on the mounting frame 300, and at the same time replace the anti-rotation support plate 3 and the connecting support plate 5 with the support ring 6, and use the second wrench 7 to replace the first wrench 2, so that the second nut 200 and the first nut 100 can be assembled or disassembled in turn, and the output shaft is rotated by twisting, which greatly reduces the difficulty and labor intensity of the workers' operation, and is conducive to improving the efficiency of assembly.

[0083] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0084] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A nut disassembly and assembly device for a long shaft part, used for respectively assembling a first nut (100) and a second nut (200) onto or removing the first nut (100) from an output shaft, wherein the output shaft is provided with a bearing and a spline sleeve. It is characterized in that The nut disassembly and assembly device for a long shaft part comprises a mounting frame (300), a torque multiplier (500), a first disassembly and assembly assembly, and a second disassembly and assembly assembly; the mounting frame (300) is used to support the output shaft in a vertical direction; the first disassembly and assembly assembly and the second disassembly and assembly assembly are used to be replaceably mounted on the mounting frame (300); The first disassembly assembly component comprises a first support (1), a first wrench (2) and an anti-rotation support plate (3); the first support (1) is used to be connected to the mounting frame (300) to support the outer ring of the bearing on the output shaft; the first end of the anti-rotation support plate (3) is fixedly connected to the mounting frame (300); the second end of the anti-rotation support plate (3) is used to be fixedly connected to the second nut (200); the second end of the anti-rotation support plate (3) is also used to fixedly support the torque multiplier (500); the first end of the first wrench (2) is used to be connected to the spline sleeve on the output shaft; the second end of the first wrench (2) is used to be clamped with the torque multiplier (500); the torque multiplier (500) is used to drive the output shaft to rotate through the first wrench (2) so as to assemble or disassemble the second nut (200); The second disassembly assembly component comprises a support ring (6), a second wrench (7) and a second support (8); the second support (8) is used to be connected to the mounting frame (300) and the first end of the second support (8) is connected and fixed to the first nut (100); the support ring (6) is used to be connected to the mounting frame (300); the support ring (6) is used to be connected to the mounting frame (300) through the first end and to fix the torque multiplier (500) through the second end; the second wrench (7) is used to be connected to the spline sleeve on the output shaft; the second end of the second wrench (7) is used to be clamped with the torque multiplier (500); the torque multiplier (500) is also used to drive the output shaft to rotate through the second wrench (7) so as to assemble or disassemble the first nut (100).

2. A nut disassembly and assembly device for a long shaft part according to claim 1, It is characterized in that The mounting frame (300) comprises a first support plate (301), a second support plate (302) and a connecting column (303); the first support plate (301) and the second support plate (302) are arranged in parallel in a vertical direction; the connecting column (303) is used to connect and fix the first support plate (301) and the second support plate (302); a first limiting groove (304) is provided on the first support plate (301); the first limiting groove (304) is used to install an anti-rotation support plate (3) or a support ring (6); and a second limiting groove (305) is provided on the second support plate (302) and is opposite to the first limiting groove (304) and is used to limit and fix the output shaft in a vertical direction.

3. A nut disassembly and assembly device for a long shaft part according to claim 2, It is characterized in that A first mounting platform (11) is provided at the first end of the first support (1), and the first mounting platform (11) is connected to the second support plate (302) by means of bolts. A retaining groove (12) is provided on the end surface of the second end of the first support (1), and the retaining groove (12) is used to retain a lug on the outer ring when the first support (1) supports the outer ring of the bearing.

4. A nut disassembly and assembly device for a long shaft part according to claim 2, It is characterized in that The anti-rotation support plate (3) comprises a support plate body (31), a second mounting platform (32) and a first protruding tooth (33); the support plate body (31) is a hollow cylindrical structure; a second mounting platform (32) is provided at the top of the support plate body (31); the second mounting platform (32) is used to be connected to the first support plate (301) by bolts; a plurality of first protruding teeth (33) are provided in an annular array at the bottom end of the support plate body (31); the first protruding teeth (33) are used to be engaged with a second limiting groove preset on the second nut (200).

5. A nut disassembly and assembly device for a long shaft part according to claim 2, It is characterized in that The second support (8) is a hollow cylindrical structure. A fifth mounting platform (81) is provided at the bottom end of the second support (8). The fifth mounting platform (81) is used to be connected to the second support plate (302) by bolts. A plurality of second protruding teeth (82) are provided in an annular array at the top end of the second support (8). The second protruding teeth (82) are used to be engaged with a first limiting groove preset on the first nut (100).

6. A nut disassembly and assembly device for a long shaft part according to claim 2, It is characterized in that A fourth mounting platform (61) is provided at the bottom end of the support ring (6), and the fourth mounting platform (61) is used to be connected to the first support plate (301) by means of bolts. The torque multiplier (500) is arranged to penetrate the support ring (6), and a second hexagonal hole (62) is provided at the top end of the support ring (6). The second hexagonal hole (62) is used to be engaged with a hexagonal head preset on the torque multiplier (500) so as to fix and support the torque multiplier (500).

7. A nut disassembly and assembly device for a long shaft part according to claim 1, It is characterized in that The nut disassembly and assembly device for the long shaft part also includes a connecting support plate (5), a first end of the connecting support plate (5) is connected to the anti-rotation support plate (3), a second end of the connecting support plate (5) is used to fix and support the torque multiplier (500), the connecting support plate (5) is a hollow cylindrical structure, a third mounting platform (51) is provided at the bottom end of the connecting support plate (5), the third mounting platform (51) is used to be connected to the anti-rotation support plate (3) through a locking member (4), the torque multiplier (500) is sequentially arranged through the connecting support plate (5) and the anti-rotation support plate (3), a first hexagonal hole (52) is provided at the top end of the connecting support plate (5), the first hexagonal hole (52) is used to be clamped with a hexagonal head preset on the torque multiplier (500) to fix and support the torque multiplier (500).

8. A nut disassembly and assembly device for a long shaft part according to claim 1, It is characterized in that The first wrench (2) is provided with a first external spline (21) on the outer wall of the bottom, and the first external spline (21) is used to cooperate with the internal spline of the spline sleeve on the output shaft. The top of the first wrench (2) is provided with a first square hole (22), and the first square hole (22) is used to be clamped with a square head preset on the torque multiplier (500); the second wrench (7) is provided with a second external spline (72) on the outer wall of the bottom, and the second external spline (72) is used to cooperate with the internal spline of the spline sleeve on the output shaft. The top of the second wrench (7) is provided with a second square hole (71), and the second square hole (71) is used to be clamped with a square head preset on the torque multiplier (500).

9. A nut disassembly and assembly device for a long shaft part according to claim 8, It is characterized in that The nut disassembly and assembly device for the long shaft part also includes an adapter (600), which is used to replace the torque multiplier (500) and be connected to the first wrench (2) or the second wrench (7). The bottom end of the adapter (600) is provided with an adapter square head (602), which is used to be connected to the first square hole (22) of the first wrench (2) or the second square hole (71) of the second wrench (7). The top end of the adapter (600) is provided with a third square hole (601), which is used to be connected to the torque wrench.

10. A method for disassembling and assembling a nut of a long shaft part, using the nut disassembling and assembling device for a long shaft part according to any one of claims 1 to 9, wherein The following steps are involved: When the second nut (200) needs to be assembled, firstly, the second nut (200) is screwed into the pre-tightening sleeve to be set at the preset installation position on the output shaft, the first support (1) is connected to the mounting frame (300), the small end of the output shaft is placed on the first support (1) with the small end facing downwards, and the outer ring of the bearing on the output shaft is supported by the first support (1), and the state of the output shaft is checked to ensure that the output shaft can rotate freely; the first wrench (2) is inserted into the spline sleeve on the output shaft; the first end of the anti-rotation support plate (3) is connected to the mounting frame (300), and the anti-rotation support plate (3) is tightened by the first support (1) to prevent the rotation of the output shaft from rotating. The second end of the rotation support plate (3) is connected to the second nut (200); the first end of the connecting support plate (5) is connected to the anti-rotation support plate (3), and the torque multiplier (500) is fixedly supported by the second end of the connecting support plate (5), and the torque multiplier (500) is clamped with the second end of the first wrench (2); the torque of the torque multiplier (500) is set to 1 / 16 of the actual required tightening torque, and the torque multiplier (500) is screwed to drive the first wrench (2) and the output shaft to rotate, and then the second nut (200) is assembled and fastened on the output shaft; When the second nut (200) needs to be disassembled and removed from the output shaft, the second nut (200) can be loosened and removed by twisting the torque multiplier (500) in the opposite direction; When the first nut (100) needs to be assembled, the first nut (100) is screwed into the pre-tightening sleeve and installed at a preset installation position on the output shaft, the second support (8) replaces the first support (1) and is installed on the mounting frame (300), the output shaft is placed with the small end facing downward on the second support (8) and is connected and fixed to the first nut (100) via the first end of the second support (8); the support ring (6) replaces the anti-rotation support plate (3) and is connected to the mounting frame (300), and is connected to the mounting frame (300) via the support ring (6). The support ring (6) fixes and supports the torque multiplier (500); the second wrench (7) replaces the first wrench (2) and is inserted into the spline sleeve on the output shaft; the torque multiplier (500) is clamped with the second end of the second wrench (7); the torque of the torque multiplier (500) is set to 1 / 16 of the actual required tightening torque, the torque multiplier (500) is screwed to drive the second wrench (7) and the output shaft to rotate, and then the first nut (100) is assembled and fastened on the output shaft; When the first nut (100) needs to be disassembled and removed from the output shaft, the first nut (100) can be loosened and removed by twisting the torque multiplier (500) in the opposite direction.

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