Gearbox turnover auxiliary tool and gearbox turnover method

Abstract

The application discloses a gear box turnover auxiliary tool and a gear box turnover method, and relates to the technical field of gear box turnover tools, in particular to a gear box turnover auxiliary tool and a gear box turnover method. The gear box turnover auxiliary tool comprises a torsion arm support, a fixed base and an adjustable supporting base. The torsion arm support comprises a lifting ring, a main support, a rotating bolt, a supporting pad and a cylindrical shaft. One end of the main support is provided with the lifting ring, and the other end of the main support is a frame structure with one side being open. The frame structure is composed of four side plates and a closed cover plate fixed on the four side plates. One rotating bolt is screwed into each side plate. The bottom end of each rotating bolt is fixed with a supporting pad. The closed cover plate is fixed with the cylindrical shaft. The upper portion of the fixed base is provided with a V-shaped bearing interface matched with the cylindrical shaft. The gear box can be turned over by using the gravity of the gear box and cooperating with a travelling crane. The gear box turnover auxiliary tool has the advantages of simple structure, convenient operation, high safety coefficient, low manufacturing and production cost and capability of being used in batch production.

Description

Technical Field

[0001] This invention belongs to the field of mechanical transmission equipment technology, and more specifically relates to a gearbox flipping auxiliary tooling and a gearbox flipping method implemented using the gearbox flipping auxiliary tooling. Background Technology

[0002] Large gearboxes are often assembled vertically and installed horizontally. This requires that after vertical assembly, the gearbox be flipped over to place it in a horizontal position. Existing technologies generally use the following two flipping methods:

[0003] The first flipping method, such as Figure 1 As shown, a dedicated flipping machine 100 is used to flip the gearbox 300. The mechanical arm of the flipping machine 100 clamps the torque arm of the gearbox 300, and the mechanical arm is driven by electrical and hydraulic means to drive the gearbox to move, thereby realizing the flipping of the gearbox 300. Because the flipping machine itself has a complex structure and is expensive, the use and maintenance costs of this flipping method are relatively high.

[0004] The second flipping method, such as Figure 2 As shown, the gearbox 300 is flipped using a crane or gantry crane 200. The crane or gantry crane 200 flips the gearbox 300 by coordinating the lifting and lowering of the main hook and the auxiliary hook. This flipping method requires extremely high skill from the crane operator, and the long flipping time due to manual operation makes it unsuitable for mass production. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides a gearbox flipping auxiliary tooling and a gearbox flipping method implemented using the gearbox flipping auxiliary tooling.

[0006] In one aspect of the present invention, the provided gearbox flipping auxiliary tooling includes a torque arm bracket, a fixed base, and an adjustable support base. The torque arm bracket includes a lifting ring, a main bracket, a rotating bolt, a support pad, and a cylindrical shaft. A lifting ring is installed at one end of the main bracket, and the other end of the main bracket is a frame structure with a single-sided opening. The frame structure consists of four side plates and a closed cover plate fixed to the four side plates. A rotating bolt is screwed into each side plate, and a support pad is fixed at the bottom end of each rotating bolt. The cylindrical shaft is fixed on the closed cover plate, and a V-shaped bearing interface matching the cylindrical shaft is provided on the upper part of the fixed base.

[0007] Furthermore, in the aforementioned gearbox flipping auxiliary tooling, the support pad is directly welded to the bottom end of the rotating bolt.

[0008] Furthermore, in the aforementioned gearbox flipping auxiliary tooling, the bottom end of each of the rotating bolts is designed as a small-diameter segment, the small-diameter segment and the other parts of the adjacent rotating bolts form a stepped surface, the end of the small-diameter segment is provided with a circumferential groove, each of the support pads has a notch on the side away from the side plate, the length of the small-diameter segment is less than the thickness of the support pad but greater than the difference between the thickness of the support pad and the depth of the notch, and a retaining spring is installed in the circumferential groove.

[0009] Furthermore, in the aforementioned gearbox flipping auxiliary tooling, the cylindrical shaft is welded to the closed cover plate, and multiple stiffening plates are welded between the cylindrical shaft and the closed cover plate.

[0010] Furthermore, in the aforementioned gearbox flipping auxiliary tooling, the main support is provided with multiple lifting ring mounting holes at one end of the lifting ring.

[0011] In another aspect of the present invention, the gearbox reversing method implemented using the above-described gearbox reversing auxiliary tooling includes:

[0012] After the vertically assembled gearbox is completed, the opening side of the main support frame structure is aligned with the gearbox torque arm with the lifting ring facing upwards. The torque arm is housed in the space enclosed by the four side plates. Then, the gearbox torque arm is fixed to the torque arm bracket in the four directions of up, down, left, and right by adjusting the rotating bolts to drive the support pad.

[0013] Based on the actual dimensions of the gearbox and torque arm bracket, place the fixed base and adjustable support base on the ground;

[0014] Secure the hoisting rope to the hoisting ring, and use the crane to hoist the gearbox and torque arm bracket together to the top of the fixed support. Place the cylindrical shaft in the V-shaped bearing interface on the upper part of the fixed base.

[0015] The trolley moves towards the adjustable support base while simultaneously lowering its hook. Under the combined effect of the trolley moving towards the adjustable support base and the hook lowering, the center of gravity of the gearbox changes. Through the mutual rotation between the cylindrical shaft and the V-shaped bearing interface of the fixed base, the gearbox flips from the vertical direction to the horizontal direction and finally rests horizontally on the fixed base and the adjustable support base.

[0016] Compared with the prior art, the gearbox flipping auxiliary tooling and the gearbox flipping method implemented by the present invention can achieve gearbox flipping by utilizing the gearbox's own gravity and cooperating with a traveling crane. It has a simple structure, is easy to operate, has a high safety factor, low manufacturing and production costs, and can be used in mass production. Furthermore, it has the following advantages and beneficial effects:

[0017] 1. The rotating bolt is fixed to the support pad by the positioning surface and the snap ring, which can realize the axial movement of the support pad and prevent the support pad from falling off when it is retracted;

[0018] 2. By adjusting the screwing depth of the rotating bolt relative to the side plate, the torque arm bracket can be adapted to the torque arm of gearboxes of different sizes.

[0019] 3. The cylindrical shaft of the torque arm bracket is supported by the V-shaped bearing interface on the upper part of the fixed base, which can not only play a guiding role during assembly, but also reduce the contact area between the cylindrical shaft and the fixed bracket, thus reducing friction.

[0020] 4. The torque arm bracket is equipped with multiple lifting ring mounting holes to meet the lifting requirements of gearboxes with different centers of gravity. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of how a gearbox is flipped using a flipping machine in the prior art.

[0023] Figure 2 This is a schematic diagram illustrating the use of a crane or gantry crane to flip the gearbox in existing technology.

[0024] Figure 3a and Figure 3b This is a schematic diagram of the overall structure of the gearbox flipping auxiliary tooling of the present invention, wherein... Figure 3a This shows the state before the gearbox was flipped. Figure 3b This shows the state of the gearbox after it has been flipped.

[0025] Figures 4a to 4d This is a schematic diagram of the torque arm bracket in the gearbox flipping auxiliary tooling of the present invention, wherein... Figure 4a This is the front view of the torque arm bracket. Figure 4b This is a top view of the torque arm support. Figure 4c For along Figure 4a Sectional view of AA, Figure 4d for Figure 4c Enlarged view of section B in the middle.

[0026] Figure 5 This is a schematic diagram of the rotating bolt in the gearbox flipping auxiliary tooling of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Tilting machine, 200 - Overhead crane or hoist, 300 - Gearbox;

[0029] 1-Tractor, 2-Lifting rope, 3-Gearbox, 4-Torque arm bracket, 5-Fixed base, 6-Adjustable support base, 7-Lifting ring, 8-Main bracket, 81-Side plate, 82-Closed cover plate, 83-Lifting ring mounting hole, 9-Rotating bolt, 91-Small diameter section, 92-Circumferential groove, 10-Support pad, 10a-Notch, 11-Snap ring, 12-Cylindrical shaft, 13-Firming plate, 30-Torque arm. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0031] like Figure 3a , Figure 3b , Figures 4a to 4d as well as Figure 5 As shown, the gearbox flipping auxiliary tooling of the present invention includes a torque arm bracket 4, a fixed base 5, and an adjustable support base 6. The torque arm bracket 4 includes a lifting ring 7, a main bracket 8, a rotating bolt 9, a support pad 10, and a cylindrical shaft 12. One end of the main bracket 8 (i.e., Figure 3a The upper part or Figure 3b The left end of the main bracket 8 is equipped with a lifting ring 7, and the other end of the main bracket 8 is also equipped with a lifting ring 7. Figure 3a The lower end or Figure 3b The right end of the frame is a single-sided open frame structure, which consists of four side plates 81 and a closed cover plate 82 fixed on the four side plates 81. A rotating bolt 9 is screwed into each side plate 81, and a support pad 10 is fixed at the bottom of each rotating bolt 9. A cylindrical shaft 12 is fixed on the closed cover plate 82.

[0032] In the gearbox flipping auxiliary tooling of the present invention, the support pad 10 can be directly welded to the bottom end of the rotating bolt 9.

[0033] In the gearbox flipping auxiliary tooling of the present invention, preferably, the bottom end of each rotating bolt 9 is designed as a small-diameter segment 91, and the small-diameter segment 91 and the other parts of the adjacent rotating bolt 9 form a stepped surface. The end of the small-diameter segment 91 is provided with a circumferential groove 92. The side of each support pad 10 away from the side plate 81 is provided with a notch 10a. The length L of the small-diameter segment 91 is designed to be less than the thickness H of the support pad 10 but greater than the difference H-H1 between the thickness H of the support pad 10 and the depth H1 of the notch 10a. Thus, the small-diameter segment 91 of the rotating bolt 9 is screwed into the support pad 10, and the stepped surface formed by the small-diameter segment 91 and the other parts of the adjacent rotating bolt 9 constitutes the stop positioning surface of the support pad 10. At the same time, a retaining spring 11 is installed in the circumferential groove 92, thereby fixing the support pad 10 to the bottom end of the rotating bolt 9 by the stop positioning surface and the retaining spring 11.

[0034] In the gearbox flipping auxiliary tooling of the present invention, preferably, the cylindrical shaft 12 is welded to the closed cover plate 82, and a plurality of stiffening plates 13 are welded between the cylindrical shaft 12 and the closed cover plate 82.

[0035] In the gearbox flipping auxiliary tooling of the present invention, the upper part of the fixed base 5 is provided with a V-shaped bearing interface that matches the cylindrical shaft 12.

[0036] In the gearbox flipping auxiliary tooling of the present invention, preferably, one end of the mounting ring 7 of the main support 8 is provided with a plurality of mounting ring holes 83, thereby, by selecting different mounting ring holes 83 to install the lifting ring 7, the lifting of gearboxes with different centers of gravity can be satisfied.

[0037] The gearbox flipping method of the present invention, implemented using the above-mentioned gearbox flipping auxiliary tooling, includes:

[0038] After the vertical assembly of the gearbox 3 is completed, the opening side of the main support frame structure of the main bracket 8 is aligned with the torque arm 30 of the gearbox 3 with the lifting ring 7 facing upwards. The torque arm 30 is housed in the space enclosed by the four side plates 81. Then, by adjusting the rotating bolt 9 to drive the support pad 10, the torque arm 30 of the gearbox 3 is fixed to the torque arm bracket 4 in the four directions of up, down, left, and right.

[0039] Based on the actual dimensions of gearbox 3 and torque arm bracket 4, place fixed base 5 and adjustable support base 6 on the ground;

[0040] Fix the hoisting rope 2 to the hoisting ring 7, and use the crane 1 to hoist the gearbox 3 and the torque arm bracket 4 together to the top of the fixed support 5. Place the cylindrical shaft 12 in the V-shaped bearing interface on the upper part of the fixed base 5.

[0041] The trolley 1 moves toward the adjustable support base 6 while the hook of the trolley 1 is lowered. Under the combined effect of the trolley 1 moving toward the adjustable support base 6 and the hook of the trolley 1 lowering, the center of gravity of the gearbox 3 changes. Through the mutual rotation between the cylindrical shaft 12 and the V-shaped bearing interface of the fixed base 5, the gearbox 3 flips from the vertical direction to the horizontal direction and finally supports itself on the fixed base 5 and the adjustable support base 6 in a horizontal position, so as to facilitate the horizontal installation operation of the gearbox 3.

[0042] In summary, the gearbox flipping auxiliary fixture and the gearbox flipping method implemented using the present invention can achieve gearbox flipping by utilizing the gearbox's own gravity and cooperating with a traveling crane. It features a simple structure, easy operation, high safety factor, low manufacturing and production costs, and can be used in mass production. In particular, the gearbox flipping auxiliary fixture and the gearbox flipping method implemented using the present invention have the following characteristics:

[0043] 1. The rotating bolt is fixed to the support pad by the positioning surface and the snap ring, which can realize the axial movement of the support pad and prevent the support pad from falling off when it is retracted;

[0044] 2. By adjusting the screwing depth of the rotating bolt relative to the side plate, the torque arm bracket can be adapted to the torque arm of gearboxes of different sizes.

[0045] 3. The cylindrical shaft of the torque arm bracket is supported by the V-shaped bearing interface on the upper part of the fixed base, which can not only play a guiding role during assembly, but also reduce the contact area between the cylindrical shaft and the fixed bracket, thus reducing friction.

[0046] 4. The torque arm bracket is equipped with multiple lifting ring mounting holes to meet the lifting requirements of gearboxes with different centers of gravity.

[0047] It should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Additionally, the terms "connection" and similar terms used herein should be interpreted broadly, referring to fixed connections or detachable connections, direct connections or indirect connections via intermediate components. Moreover, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer" in this document refer to the placement shown in the accompanying drawings.

[0048] It should also be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present invention.

Claims

1. A gear box overturning method, which is implemented by using a gear box overturning auxiliary tool, the gear box overturning auxiliary tool comprising a torsion arm support, a fixed base, and an adjustable support base, the torsion arm support comprising a lifting ring, a main support, a rotating bolt, a support pad, and a cylindrical shaft, one end of the main support is provided with the lifting ring, the other end of the main support is a single-sided open frame structure, the frame structure is composed of four side plates and a closing cover plate fixed on the four side plates, one rotating bolt is screwed into each side plate, the bottom end of each rotating bolt is fixed with a support pad, and the closing cover plate is fixed with the cylindrical shaft, and the upper part of the fixed base is provided with a V-shaped receiving interface matched with the cylindrical shaft. The gear box overturning method comprises the following steps: After the vertical assembly of the gear box is completed, the opening side of the main support frame structure is directed to the torsion arm of the gear box in a manner that the lifting ring faces upward, the torsion arm is accommodated in the space surrounded by the four side plates, and then the torsion arm of the gear box is fixed to the torsion arm support in four directions of up, down, left and right through the adjustment of the rotating bolt to drive the supporting pad; According to the actual size of the gear box and the torsion arm support, the fixed base and the adjustable supporting base are placed on the ground; The lifting rope is fixed to the lifting ring, the gear box and the torsion arm support are hoisted together to above the fixed support by using the travelling crane, and the cylindrical shaft is placed in the V-shaped receiving interface on the upper part of the fixed base; The travelling crane is moved toward the adjustable supporting base while the lifting hook of the travelling crane is lowered, under the double actions of the movement of the travelling crane toward the adjustable supporting base and the lowering of the lifting hook of the travelling crane, the center of gravity of the gear box changes, and through the mutual rotation between the cylindrical shaft and the V-shaped receiving interface of the fixed base, the gear box is overturned from the vertical direction to the horizontal direction, and finally supported on the fixed base and the adjustable supporting base in the horizontal position.

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