Fixed adjustable supporting tool for turbine tester assembly
By designing a fixed adjustable support fixture, the volute housing can be flipped and its angle fine-tuned using mounting brackets and adjustable telescopic brackets. This solves the assembly problem of the drive shaft, improves assembly efficiency and coaxiality, and ensures the stability of the test equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-31
AI Technical Summary
The assembly of traditional volute structures is difficult, especially the assembly and alignment of the internal drive shaft of the axial intake and exhaust volute. Furthermore, there are high requirements for the height and parallelism of the drive shaft in alignment with the test object and the rotating shaft of the power absorption device.
A fixed adjustable support fixture was designed, including a base platform, a positioning assembly mechanism, a mounting bracket, and an adjustable telescopic bracket. The drive shaft is installed horizontally to vertically by hoisting. The mounting bracket and the adjustable telescopic bracket are used to rotate the volute and finely adjust the angle to achieve precise positioning of the drive shaft.
This reduces the assembly difficulty of the drive shaft, improves assembly efficiency, ensures the coaxiality of the drive shaft and the volute, and enhances the safety of the test and the performance of the equipment.
Smart Images
Figure CN224059803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aero-engine testing, and more specifically, to a fixed adjustable support fixture for assembling a turbine tester. Background Technology
[0002] In performance testing of aero-engine turbine components, the volute is often used as the upstream or downstream intake or exhaust device for the test object. Its special internal structure allows it to generate a stable internal flow field, which is beneficial for stable test operation and stable measurement at the inlet and outlet measuring points of the test object. Traditional intake and exhaust volute structures generally adopt an axial + radial intake and exhaust combination. The advantage of this design is that it shortens the length of the intake and exhaust pipes and saves space in the test equipment layout. However, this type of volute mostly adopts a contraction-expansion flow channel structure, where the airflow turns inside and is prone to flow separation, resulting in a complex flow field distribution, which to some extent affects the uniformity of the inlet and outlet airflow. A new volute structure, in order to achieve a more uniform inlet and outlet flow field, adopts an axial intake and exhaust method for both intake and exhaust, which can further achieve the purpose of uniform flow field. Taking this type of intake volute structure as an example, its upstream connects to the intake pipe and its downstream connects to the test object. The airflow enters and exits axially, the airflow turning angle is greatly reduced, and flow separation occurs less, improving the internal flow field of the volute. Therefore, it has better uniformity at the outlet. In addition to improving the inlet and outlet flow fields, the design of this type of volute structure also needs to consider the connection between the power absorption devices on both sides of the volute and the rotating shaft of the test piece. Traditional volute structures generally have a large radial dimension and a narrow axial width, making it relatively easy to connect the shaft transmission devices on both sides through the volute. However, the axial dimension of the axial intake and exhaust volute structure is larger, making the connection between the rotating shaft of the test piece on one side and the power absorption device on the other side particularly critical.
[0003] To address this, the volute structure employs an internal horizontal central shaft cavity design. The central shaft cavity houses the drive shaft and its supporting components, bearing housings, bearings, etc., used to connect the test specimens and power absorption equipment at both ends of the volute. The main challenge lies in the fact that, because the central shaft cavity is a horizontal structure within the volute, and several mating relationships exist between related components, directly assembling the bearing housings, bearings, and drive shaft within the shaft cavity presents significant assembly difficulties and limited operability.
[0004] Furthermore, even if the drive shaft and volute are successfully assembled, there may be differences in height and horizontal alignment between the drive shaft and the test objects and power absorption equipment on both sides. There may even be non-parallelism between the shafts. For aero-engine rotor test pieces, such as turbines and compressors, the rotational accuracy of the shafts is extremely high. Therefore, strict control of the coaxiality between the drive shafts is necessary during assembly, generally not exceeding 0.05 mm. Higher coaxiality helps reduce vibration during operation, improves test safety, and ensures the performance and lifespan of the test objects. Therefore, the assembly and shaft alignment methods of the drive shafts inside the volute must be considered simultaneously. Utility Model Content
[0005] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.
[0006] The purpose of this utility model includes, for example, providing a fixed and adjustable support fixture for assembling a turbine tester, which can improve the problem that it is difficult to horizontally install components such as drive shafts into the shaft cavity by means of hoisting when the internal shaft cavity structure of the volute is horizontal.
[0007] The embodiments of this utility model can be implemented as follows:
[0008] This utility model provides a fixed adjustable support fixture for assembling a turbine tester, including a base platform, a positioning assembly mechanism, a mounting bracket, and an adjustable telescopic bracket. The positioning assembly mechanism is used to be placed at a preset position on the base platform to support the volute, or the positioning assembly mechanism is used to be fixed to the supported volute to rotate with the volute. The mounting bracket is fixed on the base platform and is used to rotatably mount the volute supported on the positioning assembly mechanism. One end of the adjustable telescopic bracket is hinged to the base platform, and the other end of the adjustable telescopic bracket is used to hinge to the positioning assembly mechanism that rotates with the volute. The adjustable telescopic bracket is used to drive the volute to rotate during the extension and retraction process so that the central shaft cavity of the volute is vertically upward.
[0009] In addition, the fixed adjustable support fixture for assembling a turbine tester provided in the embodiments of this utility model may also have the following additional technical features:
[0010] Optionally, the mounting bracket includes a first bracket and a second bracket; the first bracket, the positioning assembly mechanism and the second bracket are arranged in sequence, the first bracket and the second bracket are both fixed to the base platform, and the first bracket and the second bracket are respectively used to rotatably connect with the trunnions on both sides of the volute.
[0011] Optionally, the mounting bracket further includes a bearing housing and a spherical bearing; the top of both the first bracket and the second bracket is equipped with a bearing housing and a spherical bearing, the spherical bearing is installed in the bearing housing, and the spherical bearing is used to connect with the trunnion of the volute so that the volute can rotate relative to the bearing housing.
[0012] Optionally, both the first bracket and the second bracket are triangular brackets.
[0013] Optionally, the positioning assembly includes a connecting support and two fixed fins; the connecting support is placed at the preset position, and the two fixed fins are symmetrically arranged relative to the connecting support. The two fixed fins are detachably fixed to the base platform to clamp and fix the position of the connecting support.
[0014] Optionally, the adjustable telescopic bracket includes a first mounting base, an adjustable telescopic rod, and a second mounting base. One end of the adjustable telescopic rod is hinged to the first mounting base, which is used to hinge with the positioning assembly mechanism that rotates with the volute. The other end of the adjustable telescopic rod is hinged to the second mounting base, which is used to hinge with the base platform. The adjustable telescopic rod is used to drive the volute to rotate during the extension and retraction process.
[0015] Optionally, the adjusting telescopic rod includes an internally threaded sleeve, a left-hand screw, and a right-hand screw; the left-hand screw and the right-hand screw are respectively threaded to both ends of the internally threaded sleeve, one end of the left-hand screw extending out of the internally threaded sleeve is hinged to the first mounting base, and one end of the right-hand screw extending out of the internally threaded sleeve is hinged to the second mounting base.
[0016] Optionally, the adjusting telescopic rod further includes a first connecting member and a second connecting member; the first connecting member is hinged to the first mounting base, one end of the left-hand screw extending out of the internal threaded sleeve is threadedly connected to the first connecting member, the second connecting member is hinged to the second mounting base, and one end of the right-hand screw extending out of the internal threaded sleeve is threadedly connected to the second connecting member.
[0017] Optionally, the adjusting telescopic rod further includes multiple nuts; two nuts are threaded onto one end of the left-hand screw extending from the internal threaded sleeve, and two nuts are threaded onto one end of the right-hand screw extending from the internal threaded sleeve; the left-hand screw is screwed to the bottom of the first connecting member and then tightened by the nuts; the right-hand screw is screwed to the bottom of the second connecting member and then tightened by the nuts; the internal threaded sleeve is screwed into place with the left-hand screw and the right-hand screw and then tightened by the nuts.
[0018] Optionally, the outer periphery of the internally threaded sleeve is provided with a four-sided or hexagonal face to cooperate with a wrench.
[0019] The beneficial effects of the fixed adjustable support fixture for assembling a turbine tester according to embodiments of this utility model include, for example:
[0020] The fixed adjustable support fixture for assembling a turbine tester includes a base platform, a positioning assembly mechanism, a mounting bracket, and an adjustable telescopic bracket. The positioning assembly mechanism is used to place the turbine housing at a preset position on the base platform to support the volute, or it can be fixed to the supported volute housing to rotate with it. The mounting bracket is fixed to the base platform and is used to rotatably mount the volute housing supported on the positioning assembly mechanism. One end of the adjustable telescopic bracket is hinged to the base platform, and the other end is hinged to the positioning assembly mechanism that rotates with the volute housing. The adjustable telescopic bracket is used to drive the volute housing to rotate during extension and retraction so that the central shaft cavity of the volute housing is vertically upward.
[0021] The mounting bracket rotates the volute around its supporting axis in a specified direction. Then, a designed adjustable telescopic bracket is used to fix the volute structure and fine-tune its pitch angle, ensuring that the central shaft cavity inside the volute ultimately meets the positional requirements for drive shaft assembly. Finally, the drive shaft and other components are assembled. This solves the installation problem of the drive shaft inside the axial intake and exhaust volute, allowing rotating shafts on both sides of the volute to be connected via the drive shaft. This significantly reduces assembly difficulty and improves assembly efficiency. Attached Figure Description
[0022] The above-described features and advantages of this invention can be better understood after reading the following detailed description of the embodiments of this disclosure in conjunction with the accompanying drawings. In the drawings, the components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.
[0023] Figure 1 A schematic diagram of a fixed adjustable support fixture for assembling a turbine tester provided in an embodiment of this utility model;
[0024] Figure 2A schematic diagram of the spherical bearing and bearing housing of a fixed adjustable support fixture for assembling a turbine tester provided in an embodiment of this utility model.
[0025] Figure 3 A schematic diagram of the positioning assembly mechanism of the fixed adjustable support fixture for assembling a turbine tester provided in an embodiment of this utility model;
[0026] Figure 4 A schematic diagram of the normal installation state of the volute during the assembly of the drive shaft and its support components with the volute, provided in an embodiment of this utility model for the assembly of a fixed adjustable support fixture for turbine tester.
[0027] Figure 5 A schematic diagram of a fixed adjustable support fixture for assembling a turbine tester provided in this embodiment of the present invention, used to align the drive shaft and its support assembly with the central shaft cavity during the assembly of the drive shaft and its support assembly with the volute.
[0028] Figure 6 This is a schematic diagram of a fixed and adjustable support fixture for assembling a turbine tester, provided in an embodiment of the present invention, showing the transmission shaft and its support assembly being aligned with the central shaft cavity and inserted downwards during the assembly of the transmission shaft and its support assembly with the volute.
[0029] Figure 7 A schematic diagram of the adjustable telescopic bracket in a fixed adjustable support fixture for assembling a turbine tester provided in an embodiment of this utility model;
[0030] Figure 8 An exploded view of the adjustable telescopic bracket in the fixed adjustable support fixture for assembling a turbine tester provided in an embodiment of this utility model.
[0031] Icons: Base platform-1; Positioning assembly mechanism-5; Mounting bracket-2; Bearing seat-3; Spherical bearing-4; Connecting support-502; Fixed fin plate-501; First mounting seat-601; Internal threaded sleeve-604; Right-hand screw-605; Pin-shaft-602; U-shaped connector-603. Detailed Implementation
[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.
[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," "outer," or "vertical" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, and does not indicate or imply that the device or element 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.
[0034] At the same time, it should be noted that the terms "first" and "second" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.
[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified or limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] The following is combined Figures 1 to 6 The fixed adjustable support fixture for assembling a turbine tester provided in this embodiment is described in detail.
[0037] Please refer to Figure 1 This utility model provides a fixed adjustable support fixture for assembling a turbine tester, including a base platform 1, a positioning assembly mechanism 5, a mounting bracket 2, and an adjustable telescopic bracket. The positioning assembly mechanism 5 is used to be placed at a preset position on the base platform 1 to support the volute, or the positioning assembly mechanism 5 is used to be fixed to the supported volute so that it rotates with the volute. The mounting bracket 2 is fixed on the base platform 1 and is used to rotatably mount the volute supported on the positioning assembly mechanism 5. One end of the adjustable telescopic bracket is hinged to the base platform 1, and the other end of the adjustable telescopic bracket is used to hinge to the positioning assembly mechanism 5 that rotates with the volute. The adjustable telescopic bracket is used to drive the volute to rotate during the extension and retraction process so that the central shaft cavity of the volute is vertically upward.
[0038] Reference Figure 4 , Figure 5 and Figure 6First, a crane or other lifting tool is used to lift the volute housing onto the positioning assembly mechanism 5. Then, the trunnion of the volute housing is rotatably connected to the bearing of the mounting bracket 2, and the positioning assembly mechanism 5 is simultaneously fixed to the volute housing. Alternatively, the positioning assembly mechanism 5 can be pre-fixed to the volute housing, and then the fixed positioning assembly mechanism 5 and the volute housing are placed on the base platform 1. Next, the trunnion of the volute housing is rotatably connected to the bearing of the mounting bracket 2. Then, a crane or other lifting tool is used to lift one end of the volute housing. Because the volute housing is rotatably connected to the mounting bracket 2, during the lifting process, the volute housing and the positioning assembly mechanism 5 will rotate clockwise around the rotation axis of the mounting bracket 2. After the volute housing is slowly rotated approximately 90°, the central shaft cavity inside the volute housing is roughly adjusted to a vertical position.
[0039] Fix one end of the telescopic support to the base platform 1, adjust the height of the telescopic support and connect the other end to the positioning assembly mechanism 5. Once both ends of the telescopic support are reliably connected, the constraint between the volute and the lifting tool can be released, at which point the volute is effectively supported and fixed. Then, rotate the volute by adjusting the telescopic support until the central shaft cavity of the volute is rotated vertically upward.
[0040] The assembly of the drive shaft and its support components involves using lifting tools to slowly and vertically lower it into the central shaft cavity from directly above the volute. During this process, the support height needs to be adjusted by adjusting the telescopic bracket according to the assembly position requirements, thereby fine-tuning the pitch angle of the volute and facilitating the smooth assembly of the drive shaft and other components into the central shaft cavity. The telescopic bracket provides auxiliary support and fixation for the inverted volute, and its height can also be adjusted by telescoping as needed to fine-tune the pitch angle of the volute, ensuring that the final pitch angle meets the assembly requirements.
[0041] In summary, by using the installed bracket 2, the volute is rotated around its axis of rotation in a specified direction. After the volute has rotated approximately 90°, the designed adjustable telescopic bracket is used to fix the volute and fine-tune its pitch angle, ensuring that the central shaft cavity inside the volute ultimately meets the positional requirements for the drive shaft assembly. Finally, the drive shaft and other components are assembled. This improves installation accuracy, reduces installation difficulty, and increases installation efficiency.
[0042] Reference Figure 1 In this embodiment, the mounting bracket 2 includes a first bracket and a second bracket; the first bracket, the positioning assembly mechanism 5 and the second bracket are arranged in sequence, and both the first bracket and the second bracket are fixed to the base platform 1. The first bracket and the second bracket are respectively used to rotatably connect with the trunnions on both sides of the volute.
[0043] The positioning assembly mechanism 5 is located between the first bracket and the second bracket, and the volute is rotatably installed between the first bracket and the second bracket. The first bracket and the second bracket have the same structure.
[0044] Reference Figure 2 In this embodiment, the mounting bracket 2 also includes a bearing seat 3 and a spherical bearing 4; the top of the first bracket and the second bracket are both equipped with a bearing seat 3 and a spherical bearing 4. The spherical bearing 4 is installed in the bearing seat 3 and is used to connect with the trunnion of the volute so that the volute can rotate relative to the bearing seat 3.
[0045] The first and second supports have the same structure, both equipped with bearing seats 3 and spherical bearings 4. The volute is fitted with the spherical bearing 4 via a trunnion structure, and the spherical bearing 4 is fixed inside the bearing seat 3. Taking the first support as an example, the bearing seat 3 is fixed to the top of the first support, the spherical bearing 4 is fixed inside the bearing seat 3, and the volute is connected to the spherical bearing 4 to achieve rotation.
[0046] The combined structure of mounting bracket 2, bearing housing 3, and spherical bearing 4 can fix the volute while allowing it to pitch and rotate around the axis of rotation. This optimizes the drive shaft installation from horizontal to vertical, solving the problem of difficult assembly of the drive shaft inside this type of volute. In addition to providing fixed support and facilitating the positioning and adjustment of the volute structure, this combined structure also absorbs the deformation and displacement of the volute under high-temperature conditions.
[0047] In this embodiment, both the first and second supports are triangular supports. Triangular supports offer greater stability.
[0048] Reference Figure 3 In this embodiment, the positioning assembly mechanism 5 includes a connecting support 502 and two fixed fins 501. The connecting support 502 is placed in a preset position, and the two fixed fins 501 are symmetrically arranged relative to the connecting support 502. The two fixed fins 501 are detachably fixed to the base platform 1 to clamp and fix the position of the connecting support 502.
[0049] The positioning assembly mechanism 5 consists of a fixed fin plate 501 and a connecting support 502. The connecting support 502 is designed to be fixed to the lower end face of the volute. A small gap is left between the fixed fin plates 501 on both sides and the connecting support 502. The volute can be constrained by limiting the displacement of the connecting support 502 in the left and right directions. The connecting support 502 in the positioning assembly mechanism 5 is not fixed to the base platform 1. The above components complete the main support for the volute structure. At this time, the central shaft cavity inside the volute is in the horizontal direction.
[0050] Reference Figure 4 , Figure 5 and Figure 6When assembling the drive shaft, the first step is to use a crane or similar lifting tool to lift one end of the volute housing. Since the trunnions at both ends of the volute housing are fixed by the spherical bearings 4 and bearing seats 3, the volute housing and positioning assembly 5 will be rotated clockwise around the axis of the supporting bearings on both sides during lifting. After slowly rotating the volute housing approximately 90°, the central shaft cavity inside the volute housing is roughly adjusted to a vertical position. One end of the adjusting telescopic bracket is fixed to the base platform 1, and the height of the bracket is adjusted to connect the other end to the positioning assembly 5. Once both ends of the adjusting telescopic bracket are reliably fixed, the constraint between the volute housing and the lifting tool can be released, and the volute housing is now effectively supported and fixed. The assembly of the drive shaft and its supporting components involves using the lifting tool to slowly lower it vertically into the central shaft cavity from directly above the volute housing. During this process, the support height needs to be adjusted by adjusting the telescopic bracket according to the assembly position requirements, thereby fine-tuning the pitch angle of the volute housing to facilitate the smooth assembly of the drive shaft and other components with the central shaft cavity.
[0051] Reference Figure 1 In this embodiment, the adjustable telescopic bracket includes a first mounting base, an adjustable telescopic rod, and a second mounting base. One end of the adjustable telescopic rod is hinged to the first mounting base, which is used to hinge to the positioning assembly mechanism 5 that rotates with the volute. The other end of the adjustable telescopic rod is hinged to the second mounting base, which is used to hinge to the base platform 1. The adjustable telescopic rod is used to drive the volute to rotate during the extension and retraction process.
[0052] The first and second mounting seats are fixedly connected to the connecting support 502 in the base platform 1 and the volute positioning assembly mechanism 5, respectively. Both the first and second mounting seats are hinged to the adjusting telescopic rod. The advantage of this assembly structure is that, with the first and second mounting seats fixed, the adjusting telescopic rod can rotate within a certain range in the plane. Considering that the adjusting telescopic support is not always in a vertical state during the adjustment of the pitch angle of the volute after flipping, such as... Figure 4 As shown, it is necessary to adjust the fixed positions at both ends of the telescopic bracket so that they can be offset in the vertical direction, hence this combination structure was adopted.
[0053] Reference Figure 7 In this embodiment, the adjusting telescopic rod includes an internally threaded sleeve 604, a left-hand screw, and a right-hand screw 605; the left-hand screw and the right-hand screw 605 are respectively threaded to both ends of the internally threaded sleeve 604, one end of the left-hand screw extending out of the internally threaded sleeve 604 is hinged to the first mounting base, and one end of the right-hand screw extending out of the internally threaded sleeve 604 is hinged to the second mounting base.
[0054] The combination of left-hand and right-hand thread direction is adopted because this combination allows for flexible adjustment of the height of the telescopic bracket by simultaneously screwing the left-hand screw and the right-hand screw 605 in or out by rotating the internal thread sleeve 604 in different directions.
[0055] Reference Figure 7 and Figure 8 In this embodiment, the adjusting telescopic rod also includes a first connecting member and a second connecting member; the first connecting member is hinged to the first mounting base, one end of the left-hand screw extending out of the internal thread sleeve 604 is threadedly connected to the first connecting member, the second connecting member is hinged to the second mounting base, and one end of the right-hand screw 605 extending out of the internal thread sleeve 604 is threadedly connected to the second connecting member.
[0056] Reference Figure 7 and Figure 8 In this embodiment, the first connector and the second connector are both U-shaped connectors 603.
[0057] One end of the left-hand / right-hand screw 605 is threaded or welded to the U-shaped connector 603, and the other end is screwed into the internally threaded sleeve 604. The first mounting base and the U-shaped connector 603 are connected and constrained by a pin 602. The advantage of this combined structure is that, with the first and second mounting bases fixed respectively, the U-shaped connector 603 can rotate within a certain range in the plane. Considering that the telescopic support is not always in a vertical state during the adjustment of the pitch angle of the volute after flipping, such as... Figure 4 As shown, it is necessary to adjust the fixed positions at both ends of the telescopic bracket so that they can be offset in the vertical direction, hence this combination structure was adopted.
[0058] Reference Figure 7 and Figure 8 In this embodiment, the adjusting telescopic rod also includes multiple nuts; two nuts are threaded on one end of the left-hand screw extending from the internal threaded sleeve 604, and two nuts are threaded on one end of the right-hand screw extending from the internal threaded sleeve 604. The left-hand screw is screwed to the bottom of the first connecting piece and then tightened with nuts; the right-hand screw 605 is screwed to the bottom of the second connecting piece and then tightened with nuts; the internal threaded sleeve 604 is screwed to the bottom of the left-hand screw and the right-hand screw 605 and then tightened with nuts.
[0059] The height is adjusted by combining the internal threaded sleeve 604 and the left-hand / right-hand screw 605, thereby completing the fine adjustment of the volute pitch angle and ensuring that the volute pitch angle ultimately meets the assembly requirements.
[0060] After adjustment, tighten the fastening nuts on both sides to lock the height of the bracket, ensuring the stability of the volute structure during assembly. The left-hand and right-hand screws 605 must be paired with different thread directions, and the thread type of the corresponding internal thread sleeve 604 and fastening nut must be consistent with the screw.
[0061] Reference Figure 7 and Figure 8 In this embodiment, the outer periphery of the internally threaded sleeve 604 is provided with a square or hexagonal face to cooperate with a wrench. In order to facilitate manual rotation of the internally threaded sleeve 604 to adjust the height, a square or hexagonal face is machined on the outer surface of the internally threaded sleeve 604. The support height of the telescopic bracket can be easily adjusted by using the lever principle with the help of tools such as wrenches.
[0062] According to the embodiment provided, a fixed adjustable support fixture for assembling a turbine tester is provided. The working principle of the fixed adjustable support fixture for assembling a turbine tester includes:
[0063] The volute structure has a central shaft cavity inside to install components such as the drive shaft, which is used to connect the test pieces on both sides with the rotating shaft of the power absorption device. However, due to the structural characteristics of the horizontal central shaft cavity inside the volute, the drive shaft and its supporting components, bearings, bearing seats, etc., face considerable difficulties in assembling with the volute and adjusting the shaft system for alignment.
[0064] In this embodiment, after rotating the volute housing 90°, the horizontal central shaft cavity is adjusted to a vertical position. Then, the drive shaft is vertically installed into the shaft cavity from directly above the volute housing using a hoisting method. The advantage of vertical installation is that it is less likely to interfere with other structures in terms of space, facilitates hoisting and installation operations, and allows for precise control of the position of the volute housing shaft cavity and the drive shaft. This enables the drive shaft to be smoothly lowered directly into the shaft cavity from directly above the volute housing for assembly, greatly reducing assembly difficulty and shortening assembly time.
[0065] The fixed adjustable support fixture for assembling a turbine tester provided in this embodiment has at least the following advantages:
[0066] Mounting bracket 2 rotates the volute around its supporting axis in a specified direction. After the volute has rotated approximately 90°, the designed adjustable telescopic bracket is used to fix the volute structure and fine-tune the pitch angle, ensuring that the central shaft cavity inside the volute finally meets the positional requirements for drive shaft assembly. Finally, the drive shaft and other components are assembled. This solves the installation problem of the drive shaft inside the axial intake and exhaust volute, allowing rotating equipment on both sides of the volute to be connected via the drive shaft, greatly reducing assembly difficulty and improving assembly efficiency.
[0067] The initial alignment is completed during the vertical installation of the drive shaft into the internal shaft cavity of the volute. On this basis, fine-tuning of the alignment between the drive shaft and the rotating shafts of the equipment on both sides of the volute can be carried out, which shortens the alignment time of the shaft system.
[0068] The adjustable telescopic bracket has an auxiliary support and fixing function. One end is fixed to the base platform 1, and the other end is connected to the flipped volute. Together with the mounting bracket 2 and other components, it fixes and supports the flipped volute. No other methods or tools are needed, which simplifies the assembly process.
[0069] The adjustable telescopic bracket has the function of flexibly adjusting the support height. Through the combination structure of the internal threaded sleeve 604 and the left-hand / right-hand screws 605 at both ends, the pitch angle of the volute can be finely adjusted according to the installation requirements, which reduces the assembly difficulty of the drive shaft and further optimizes the assembly process.
[0070] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fixed adjustable type support tooling for turbine tester assembly, characterized by, It comprises: a base platform; a positioning combination mechanism for placing in a preset position of the base platform to support a volute or for fixing with a supported volute to rotate with the volute; a mounting bracket fixed on the base platform for rotatingly mounting the volute supported on the positioning combination mechanism; and an adjustable telescopic bracket having one end hinged to the base platform and the other end for hinging with the positioning combination mechanism rotating with the volute, the adjustable telescopic bracket being used to rotate the volute in the telescopic process to make the central axis cavity of the volute vertically upward.
2. The fixed adjustable support tooling for turbine tester assembly according to claim 1, wherein: the mounting bracket comprises a first bracket and a second bracket, the first bracket, the positioning combination mechanism and the second bracket are sequentially arranged, the first bracket and the second bracket are both fixed with the base platform, and the first bracket and the second bracket are respectively used for rotatingly connecting with the trunnions on both sides of the volute.
3. The fixed adjustable support tooling for turbine tester assembly according to claim 2, wherein: the mounting bracket further comprises a bearing seat and a spherical bearing, the top of the first bracket and the second bracket are both provided with the bearing seat and the spherical bearing, the spherical bearing is installed in the bearing seat, and the spherical bearing is used for connecting with the trunnions of the volute to make the volute rotate relative to the bearing seat.
4. The fixed adjustable support tooling for turbine tester assembly according to claim 2, wherein: the first bracket and the second bracket are both triangular brackets.
5. The fixed adjustable support tooling for turbine tester assembly according to any one of claims 1-4, wherein: the positioning combination mechanism comprises a connecting support and two fixed wing plates, the connecting support is placed in the preset position, the two fixed wing plates are symmetrically arranged relative to the connecting support, and the two fixed wing plates are detachably fixed with the base platform to clamp and fix the position of the connecting support.
6. The fixed adjustable support tooling for turbine tester assembly according to any one of claims 1-4, wherein: the adjustable telescopic bracket comprises a first mounting seat, an adjustable telescopic rod and a second mounting seat, one end of the adjustable telescopic rod is hinged with the first mounting seat, the first mounting seat is used for hinging with the positioning combination mechanism rotating with the volute, the other end of the adjustable telescopic rod is hinged with the second mounting seat, the second mounting seat is used for hinging with the base platform, and the adjustable telescopic rod is used to rotate the volute in the telescopic process.
7. The fixed adjustable support tooling for turbine tester assembly according to claim 6, wherein: The adjustable telescopic rod comprises an internally threaded sleeve, a left-hand screw rod and a right-hand screw rod; the left-hand screw rod and the right-hand screw rod are respectively in threaded connection with two ends of the internally threaded sleeve, one end of the left-hand screw rod extending out of the internally threaded sleeve is hingedly connected with the first mounting base, and one end of the right-hand screw rod extending out of the internally threaded sleeve is hingedly connected with the second mounting base.
8. The fixed adjustable support tooling for turbine tester assembly according to claim 7, characterized in that: The adjustable telescopic rod further comprises a first connecting piece and a second connecting piece; the first connecting piece is hingedly connected with the first mounting base, one end of the left-hand screw rod extending out of the internally threaded sleeve is in threaded connection with the first connecting piece, the second connecting piece is hingedly connected with the second mounting base, and one end of the right-hand screw rod extending out of the internally threaded sleeve is in threaded connection with the second connecting piece.
9. The fixed adjustable support tooling for turbine tester assembly according to claim 8, characterized in that: The adjustable telescopic rod further comprises a plurality of nuts; one end of the left-hand screw rod extending out of the internally threaded sleeve is provided with two nuts in threaded connection, one end of the right-hand screw rod extending out of the internally threaded sleeve is provided with two nuts in threaded connection, the left-hand screw rod is screwed to the bottom of the first connecting piece and then tightened by the nuts, the right-hand screw rod is screwed to the bottom of the second connecting piece and then tightened by the nuts, and the internally threaded sleeve is screwed to the left-hand screw rod and the right-hand screw rod and then tightened by the nuts.
10. The fixed adjustable support tooling for turbine tester assembly according to claim 7, characterized in that: An outer periphery of the internally threaded sleeve is provided with four or six prismatic surfaces to cooperate with a wrench.