Split nut mounting device

Abstract

The utility model relates to the technical field of gas turbine installation equipment, and discloses a split nut installation device which comprises a split nut and further comprises a positioning assembly and an installation wrench, the positioning assembly comprises guide rods and a positioning block, the positioning block is arranged on the two sets of guide rods in a sliding mode, and the installation wrench comprises an elastic handle, an adjusting piece and a support. The two ends of the elastic handle are connected with the two ends of the adjusting piece respectively, supports are arranged at the bottoms of the two ends of the elastic handle, and hook heads are arranged at the bottoms of the supports. According to the utility model, the two groups of semi-ring nuts can be conveniently positioned, the lantern ring can be conveniently mounted, and the mounting effect and the mounting efficiency of the split nut are effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of gas turbine installation equipment, and in particular to a split nut installation device. Background Technology

[0002] The gas turbine compressor rear shaft is equipped with a split nut, which includes two sets of semi-ring nuts, a collar, and a locking ring. The inner sides of the two sets of semi-ring nuts have internal threads that mate with the compressor rear shaft threads, while the outer sides of the semi-ring nuts have external splines. The inner side of the collar has internal splines that mate with the external splines of the semi-ring nuts, serving both clamping and transmission functions. During tightening, the compressor rotor is first fixed in place, and then the two sets of semi-ring nuts are tightened by tightening the collar. The locking ring has splines on both its inner and outer sides. The internal splines of the locking ring mate with the external splines on the compressor rear shaft, and the external splines of the locking ring mate with the internal splines of the collar. When the semi-ring nuts are tightened, the locking ring's internal splines mate with the compressor rear shaft, and the locking ring's external splines mate with the collar, providing a locking and anti-loosening function.

[0003] When assembling a gas turbine, the first step is to position it. This involves aligning the two semi-ring nuts and clamping them onto the rear shaft of the compressor rotor. It is then checked whether the rear end faces of the two semi-ring nuts are flush. Next, the two gaps at both ends of the two semi-ring nuts are adjusted to be approximately equal and within the specified range. This ensures that the external splines of the two semi-ring nuts are evenly distributed and can mate with the internal splines of the collar.

[0004] After the two semi-ring nuts are positioned, the collar is then installed. Because the collar and the two semi-ring nuts are interference fit, the collar needs to be heated to about 200℃ before installation.

[0005] The existing technology has at least the following problems: First, it is difficult to position the two sets of semi-ring nuts. Not only do the rear ends of the two sets of semi-ring nuts need to be flush, but the two gaps also need to be approximately equal and within the specified range. Second, the installation space of the collar is narrow and the temperature of the collar is high, which not only makes installation inconvenient, but also makes it easy to cause personnel injury due to operational errors. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by developing a split nut installation device. This invention can conveniently position two sets of semi-ring nuts and facilitate the installation of collars, effectively improving the installation effect and efficiency of split nuts.

[0007] The technical solution of this utility model to solve the technical problem is as follows: a split nut installation device, including a split nut, a positioning component and an installation wrench, the positioning component including a guide rod and a positioning block, the positioning block being slidably disposed on two sets of guide rods, the installation wrench including an elastic handle, an adjusting component and a bracket, the two ends of the elastic handle being respectively connected to the two ends of the adjusting component, the bottom of both ends of the elastic handle being provided with a bracket, and the bottom of the bracket being provided with a hook.

[0008] As an optimization, two sets of positioning components are provided, with each set positioned on one side of the split nut. This facilitates the installation of the positioning components.

[0009] As an optimization, the bracket is Y-shaped or T-shaped, with elastic handles at both ends of the top. This allows installers to operate with both hands, improving stability during installation.

[0010] As an optimization, the adjusting component includes two sets of pull rods. The inner ends of the two sets of pull rods are hinged to each other, and the outer ends of the two sets of pull rods are respectively hinged to the ends of adjacent elastic handles. By setting two sets of pull rods, it is convenient for workers to pull up to retract the elastic handles, thereby driving the support to retract inward.

[0011] As an optimization, the adjusting component is a pull rope. By setting the adjusting component to a pull rope, it is convenient for workers to pull up to retract the elastic handle, thereby causing the support frame to retract inward.

[0012] As an optimization, the flexible handle and bracket are molded as a single piece.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting up a positioning component including a guide rod and a positioning block, two sets of semi-ring nuts can be tightly clamped onto the threads of the compressor rear shaft, and the rear end faces of the two sets of semi-ring nuts can be easily aligned. The gap between the two sets of semi-ring nuts can be adjusted by adjusting the position of the positioning block on the guide rod. Within a specified range, the gaps on both sides are kept consistent, and the spline dimensions at the gaps on both sides are basically consistent with the spline dimensions of the surrounding area, ensuring that the inner spline of the collar can be smoothly installed onto the outer splines of the two sets of semi-ring nuts. By setting up an installation wrench including a flexible handle, an adjusting component, and a bracket, it is easy to connect to the collar and install the collar onto the two sets of semi-ring nuts, aligning the inner spline of the collar with the outer spline of the semi-ring nuts. The flexible handle allows the installer to lift the collar easily and can also drive the bracket to retract or return to its original position. The adjusting component allows the flexible handle to retract, thereby retracting the bracket and facilitating the insertion of the bracket into the collar. The bracket and hook allow it to mate with the pull-out groove on the inner side of the collar, thereby installing the collar. This invention can conveniently position two sets of semi-ring nuts and facilitate the installation of collars, effectively improving the installation effect and efficiency of split nuts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the usage state of one embodiment of the present invention.

[0016] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0017] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle.

[0018] In the diagram: 1. Positioning component; 2. Guide rod; 3. Positioning block; 4. Installation wrench; 5. Elastic handle; 6. Adjusting component; 7. Bracket; 8. Hook; 9. Pull rod; 10. Half-ring nut; 11. Collar; 12. Compressor rear shaft; 13. Rotating component. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0020] Example 1

[0021] Figures 1 to 3 As one embodiment of this utility model, such as Figures 1 to 3 As shown, a split nut installation device includes split nuts, a positioning component 1, and an installation wrench 4. The positioning component 1 includes guide rods 2 and positioning blocks 3. The positioning blocks 3 are slidably disposed on two sets of guide rods 2, which are respectively disposed on two sets of semi-ring nuts 10. The installation wrench 4 includes an elastic handle 5, an adjusting component 6, and a bracket 7. The elastic handle 5 is inverted "U" shape, and its two ends are respectively connected to the two ends of the adjusting component 6. The bottom of both ends of the elastic handle 5 is provided with a bracket 7, and the bottom of the bracket 7 is provided with a hook 8.

[0022] By setting the positioning component 1, which includes a guide rod 2 and a positioning block 3, the two sets of semi-ring nuts 10 can be tightly clamped onto the threads of the compressor rear shaft 12, and the rear end faces of the two sets of semi-ring nuts 10 can be easily aligned. The gap between the two sets of semi-ring nuts 10 can be adjusted by adjusting the position of the positioning block 3 on the guide rod 2, so that the gaps on both sides are consistent. Within the specified range, the spline size at the gaps on both sides is basically consistent with the spline size around it, ensuring that the inner spline of the collar 11 can be smoothly installed onto the outer spline of the two sets of semi-ring nuts 10; by setting an installation wrench 4 includes a flexible handle 5, an adjusting element 6, and a bracket 7, which can be easily connected to the collar 11 to install the collar 11 onto the two sets of semi-ring nuts 10, aligning the internal spline of the collar 11 with the external spline of the semi-ring nuts 10; the flexible handle 5 allows the installer to easily lift the collar and also allows the bracket 7 to retract or return to its original position; the adjusting element 6 allows the flexible handle 5 to retract, thereby retracting the bracket 7 and facilitating the insertion of the bracket 7 into the collar 11; the bracket 7 and hook 8 can mate with the pull-out groove on the inner side of the collar 11, thereby installing the collar 11.

[0023] like Figure 1 and Figure 2 As shown, the positioning component 1 is provided in two sets. The two sets of positioning components 1 are respectively set at the joint of the two sets of semi-ring nuts 10 of the split nut. Both ends of the semi-ring nuts 10 are provided with positioning holes that cooperate with the guide rod 2, which can facilitate the installation of the positioning component 1.

[0024] like Figure 1 As shown, the bracket 7 is Y-shaped or T-shaped, with elastic handles 5 at both ends of its top. The elastic handles 5 and the bracket 7 are integrally formed, and both have two sets. The first end of the first set of bracket 7 is connected to the first end of the second set of bracket 7 via the first set of elastic handles 5, and the second end of the first set of bracket 7 is connected to the second end of the second set of bracket 7 via the second set of elastic handles 5. This allows installers to operate with both hands, improving stability during installation.

[0025] like Figure 1 and Figure 3 As shown, the adjusting component 6 includes two sets of pull rods 9. The inner ends of the two sets of pull rods 9 are hinged to each other via universal joints, and the outer ends of the two sets of pull rods 9 are respectively hinged to the ends of adjacent elastic handles 5 via rotating components 13. The rotating components 13 are rollers. The ends of the elastic handles 5 are provided with vertically shaped holes, and the outer sides of the ends of the elastic handles 5 are provided with horizontally shaped rolling grooves that cooperate with the rollers. The outer ends of the pull rods 9 pass through the shaped holes and connect to the rollers, which are set in the rolling grooves. By setting two sets of pull rods 9 and rotating components, it is convenient for the operator to pull up to retract the elastic handles 5, thereby driving the support 7 to retract.

[0026] Example 2

[0027] The difference between this embodiment and the first embodiment is that the adjusting member 6 is a pull rope; by setting the adjusting member 6 to a pull rope, it is convenient for the staff to pull up and retract the elastic handle 5, thereby driving the bracket 7 to retract.

[0028] In use, first, tighten the two sets of semi-ring nuts 10 onto the threads of the compressor rear shaft 12, ensuring the rear ends of the two sets of semi-ring nuts 10 are aligned. Then, insert the four sets of guide rods 2 into the positioning holes of the semi-ring nuts 10. The positioning holes are threaded holes. The two ends of the positioning block 3 have guide holes that mate with the guide rods 2. Install the positioning block 3 onto the guide rods 2 through the guide holes. The positioning block 3 spans across the gap between the two sets of semi-ring nuts 10. The installer can adjust the gap between the two sets of semi-ring nuts 10 by sliding the positioning block 3 downwards. The gaps are designed to be consistent on both sides, and within a specified range, to ensure that the spline dimensions at the gaps on both sides are basically consistent with the dimensions of the surrounding splines. This facilitates the smooth installation of the inner spline of the collar 11 onto the outer splines of the two sets of semi-ring nuts 10. Next, the installer can hold the elastic handle 5 with both hands and pull the adjusting part 6 upwards, causing the elastic handle 5 to deform elastically and retract inwards, which in turn causes the bracket 7 to retract inwards, bringing the two hooks 8 closer together. At this point, the installer can insert the hooks 8 into the preheated collar 11. On the inside, after loosening the adjusting piece 6, the elastic handle 5 returns to its original state and drives the bracket 7 to return to its original position. At this time, both sets of hooks 8 are inserted into the pull-out grooves on the inside of the collar 11. The installer can lift the collar 11 for installation. After aligning the inner spline of the collar 11 with the outer spline of the half-ring nut 10, the collar 11 is assembled, ensuring that the front end face of the collar 11 presses against the positioning surface of the half-ring nut 10 to ensure proper installation. Then, the worker pulls the adjusting piece 6 up again, retracts the bracket 7, and disengages the hooks 8 from the pull-out grooves, completing the installation of the collar 11. Finally... The installer removes the positioning assembly 1 and then presses the locking ring (not shown in the figure) between the compressor rear shaft 12 and the collar 11 using two sets of T-shaped tie rods (not shown in the figure). The internal spline of the locking ring mates with the compressor rear shaft 12, and the external spline of the locking ring mates with the internal spline of the collar 11. The top of the locking ring has several sets of threaded holes evenly distributed, and the bottom of the T-shaped tie rod has external threads that mate with the threaded holes, allowing the T-shaped tie rod to quickly connect or disconnect from each threaded hole on the locking ring, ensuring the locking ring is installed correctly. This invention facilitates both the positioning of the two sets of semi-circular nuts 10 and the installation of the collar 11, effectively improving the installation effect and efficiency of the split nuts.

[0029] The descriptions of the orientation or relative positional relationships of the structure in this utility model, such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer", are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A split nut mounting device, comprising split nuts, characterized in that: It also includes a positioning component (1) and an installation wrench (4). The positioning component (1) includes a guide rod (2) and a positioning block (3). The positioning block (3) is slidably set on two sets of guide rods (2). The installation wrench (4) includes an elastic handle (5), an adjusting component (6) and a bracket (7). The two ends of the elastic handle (5) are respectively connected to the two ends of the adjusting component (6). The bottom of both ends of the elastic handle (5) is provided with a bracket (7), and the bottom of the bracket (7) is provided with a hook (8).

2. The split nut mounting device according to claim 1, characterized in that: The positioning component (1) is provided in two sets, and the two sets of positioning components (1) are respectively set on both sides of the split nut.

3. The split nut mounting device according to claim 2, characterized in that: The bracket (7) is Y-shaped or T-shaped, and elastic handles (5) are provided at both ends of the top of the bracket (7).

4. The split nut mounting device according to claim 3, characterized in that: The adjusting component (6) includes two sets of pull rods (9), the inner ends of the two sets of pull rods (9) are hinged to each other, and the outer ends of the two sets of pull rods (9) are respectively hinged to the ends of adjacent elastic handles (5).

5. The split nut mounting device according to claim 3, characterized in that: The adjusting element (6) is a pull rope.

6. The split nut mounting device according to claim 4 or 5, characterized in that: The flexible handle (5) and the bracket (7) are integrally formed.

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