A hydraulic turbine impeller assembly fixture

Abstract

The present invention belongs to the technical field of impeller clamping, and discloses a turbine impeller assembly fixture, comprising a base ring, the top of the base ring is fixedly connected to a bottom ring by bolts, the top of the bottom ring is fixedly connected to a mounting frame, and the top of the mounting frame is slidably penetrated by a cylinder. The present invention facilitates the micro-deflection of the impeller body at any point on its circumference by arranging the cooperation of structures such as an inflatable rubber cushion and an open rubber sleeve. During the assembly docking process, the inflatable rubber cushion is inflated. Due to the obstruction of the circular arc groove of the clamping plate, the air pressure in the inner cavity of the inflatable rubber cushion will cause the upper end of the open rubber sleeve to bulge slightly outward, flexibly squeezing the inner surface of the impeller body, thereby fine-tuning the deflection angle of the impeller body and increasing the smoothness of the assembly of the impeller body. When different amounts of gas are injected into two adjacent inflatable rubber cushions, the offset point of the impeller body also changes accordingly, effectively avoiding the impeller body from getting stuck during the assembly docking process.

Description

Technical Field

[0001] The invention belongs to the technical field of impeller clamping, in particular to a turbine impeller assembly fixture. Background Art

[0002] A water turbine is mainly composed of four parts: water inlet components, water guide components, working components and water discharge components. The impeller is the core component. Its design level directly determines the efficiency, stability and service life of the unit. It is the key to hydropower generation technology. Therefore, the assembly process of the water turbine impeller is very important. Usually, a clamp is used to clamp the impeller, and the impeller is docked and assembled by lifting.

[0003] In the prior art, during the assembly process of the impeller of the turbine, the impeller is generally clamped to the base ring and the inner cavity of the bottom ring from top to bottom. Therefore, the impeller and the bottom need to maintain the same axial height. At present, in order to improve the coaxiality of the three, a laser alignment instrument is usually used, and laser technology is used to perform high-precision axis alignment. However, in actual operation, since the impeller is usually lifted by a crane with a rope, it is easily interfered by external factors such as wind resistance during the docking process, making it difficult for the impeller to achieve 100% coaxial assembly, thereby causing jamming during the assembly process. Summary of the Invention

[0004] In order to solve the problem in the above background technology that it is difficult to achieve 100% coaxial assembly of the impeller, thereby causing jamming during the assembly process, the present invention provides a turbine impeller assembly fixture.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a turbine impeller assembly fixture, comprising a base ring, a bottom ring fixedly connected to the top of the base ring by bolts, a mounting frame fixedly connected to the top of the bottom ring, a cylinder slidingly passing through the top of the mounting frame, and the cylinder fixed to the mounting frame by a right-angle plate, and further comprising:

[0006] A floating fine-tuning mechanism is provided between the impeller body and the cylinder;

[0007] A locking range mechanism, wherein the locking range mechanism is connected to the floating fine adjustment mechanism and is provided in four groups;

[0008] Wherein, the floating fine-tuning mechanism includes a retractable part and an adjusting part;

[0009] The adjusting member includes four pairs of inflatable rubber cushions, and a spherical cavity is opened in the middle of the inflatable rubber cushions.

[0010] Preferably, the retractable member includes a suspension rod fixed to the output end of the cylinder, the suspension rod is divided into two sections, a ball shaft is fixed between the two sections of the suspension rod by bolts, and the lower section of the suspension rod extends to the inner cavity of the impeller body.

[0011] Preferably, the side wall of the boom is fixed with an electric push rod, the output end of the electric push rod is fixed with a lifting ring, the inner cavity of the lifting ring is slidably sleeved on the outer wall of the boom, the outer wall of the lifting ring is equidistantly connected to four rotating rods, the middle parts of the four rotating rods are all rotatably connected to support rods, and the four support rods are rotatably connected to the boom through positioning blocks.

[0012] Preferably, the adjusting member also includes a clamping plate rotatably connected to the end of the rotating rod, the outer walls of the four clamping plates are all sleeved with open rubber sleeves, arc grooves are symmetrically opened on both sides of the clamping plate, and the four open rubber sleeves are clamped in the arc grooves through a pair of inflatable rubber pads.

[0013] Preferably, a pair of circular holes are symmetrically opened on one side of the open rubber sleeve away from the inflatable rubber cushion, and the middle side walls of the inflatable rubber cushion are fixedly connected with threaded interfaces, and the threaded interfaces are consistent with the axis of the circular holes.

[0014] Preferably, the outer wall of the open rubber sleeve close to the inflatable rubber pad is evenly covered with a rubber fluff layer, the side of the inflatable rubber pad away from the threaded interface is fixed to the inner cavity of the open rubber sleeve, and the inflatable rubber pad and the open rubber sleeve are made of the same material.

[0015] Preferably, the locking range mechanism includes a fixed block fixed to the inner cavity of the rotating rod, the rotating rod is symmetrically provided with holes and slots on both sides of the fixed block, and the rotating rod and the fixed block are connected together by a bidirectional screw.

[0016] Preferably, the outer wall of the bidirectional screw is symmetrically threaded with a pair of sliding lock plates, the outer walls of the pair of sliding lock plates are both inserted and slid in the hole groove, and the two ends of the fixed block are symmetrically fixed with a pair of elastic sleeves, and the pair of elastic sleeves are both located on both sides of the rotating rod and remain parallel.

[0017] Preferably, both sides of the elastic jacket are in contact with the sliding lock plate, and the elastic jacket is movably sleeved on the limit rod through the rubber layer.

[0018] Preferably, the pair of limiting rods are kept parallel to the rotating rod, and the ends of the limiting rods are in contact with the open rubber sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention facilitates the micro-deflection of the impeller body at any point on its circumference by arranging the coordination of structures such as the inflatable rubber cushion and the open rubber sleeve. During the assembly and docking process, the inflatable rubber cushion is inflated. Due to the obstruction of the arc groove of the clamping plate, the air pressure in the inner cavity of the inflatable rubber cushion will cause the upper end of the open rubber sleeve to bulge slightly outward, flexibly squeezing the inner surface of the impeller body and cooperating with the ball shaft to fine-tune the deflection angle of the impeller body and increase the smoothness of the assembly of the impeller body. The rubber fluff layer increases the friction of the open rubber sleeve, and when different amounts of gas are injected into two adjacent inflatable rubber cushions, the offset point of the impeller body also changes accordingly, effectively avoiding the impeller body from getting stuck during the assembly and docking process.

[0021] The present invention cooperates with structures such as a limit rod and an elastic sleeve, thereby facilitating the accurate limitation of the rotation range of the clamping plate for impeller bodies of different sizes. The bidirectional screw is rotated, and the radial extrusion force applied by the sliding locking plate shrinks the inner diameter of the elastic sleeve, clamping and fixing the limit rod, so that the deflection range of the impeller body is mainly provided by the elastic space on both sides of the clamping plate through the open rubber sleeve, and a pair of limit rods separately abut the two sides of the clamping plate, which can always ensure that the left and right deflection ranges of the clamping plate are the same, thereby improving the efficient adaptability of the present clamp to impeller bodies of different sizes, and can also effectively avoid the situation where the impeller body rotates too large and is difficult to control due to the failure of the inflatable rubber cushion to intake air.

[0022] The present invention extends the service life of the clamp by arranging the coordination of structures such as the clamping plate and the threaded interface. The open rubber sleeve can be completely removed and replaced from the outer wall of the clamping plate. During installation, it is mainly clamped in the circular arc groove of the clamping plate through the internal threaded interface and the inflatable rubber pad. The resulting concave-convex fit effect, combined with the external rubber fluff layer, achieves an anti-twisting effect. The easily worn open rubber sleeve is easy to replace, which is beneficial to extending the overall service life of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the front view structure of the present invention;

[0025] Figure 3 It is a top plan view of the present invention;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 5 is a three-dimensional cross-sectional view of the impeller body of the present invention;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure at point B in the middle;

[0029] Figure 7 This is a schematic diagram of the structural coordination relationship between the open rubber sleeve and the clamping plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the structural coordination relationship between the inflatable rubber cushion and the open rubber sleeve of the present invention;

[0031] Figure 9 This is a schematic diagram of the structural coordination relationship between the suspension rod and the positioning block of the present invention;

[0032] Figure 10 This is a schematic diagram of the structural coordination relationship between the rotating rod and the lifting ring of the present invention;

[0033] Figure 11 This is a schematic diagram of the structural coordination relationship between the limiting rod and the elastic jacket of the present invention;

[0034] Figure 12 This is a schematic diagram of the structural coordination relationship between the fixing block and the bidirectional screw of the present invention;

[0035] Figure 13 It is a schematic diagram of the structural matching relationship between the sliding lock plate and the bidirectional screw of the present invention.

[0036] In the picture:

[0037] 1. Base ring; 2. Bottom ring; 3. Impeller body; 4. Mounting frame; 5. Right-angle plate; 6. Cylinder; 7. Floating fine-tuning mechanism; 71. Retractable part; 711. Hanging rod; 712. Rotating rod; 713. Support rod; 714. Electric push rod; 715. Ball shaft; 716. Lifting ring; 717. Positioning block; 72. Adjusting part; 721. Open rubber sleeve; 722. Rubber fleece layer; 723. Round hole; 724. Clamping plate; 725. Inflatable rubber pad; 726. Threaded interface; 8. Locking range mechanism; 81. Limit rod; 82. Elastic jacket; 83. Sliding lock plate; 84. Bidirectional screw; 85. Fixing block; 86. Rubber layer. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 13As shown, the present invention provides a turbine impeller assembly fixture, comprising a base ring 1, a bottom ring 2 fixedly connected to the top of the base ring 1 by bolts, a mounting frame 4 fixedly connected to the top of the bottom ring 2, a cylinder 6 slidingly passing through the top of the mounting frame 4, and the cylinder 6 fixed to the mounting frame 4 by a right-angle plate 5, and further comprising:

[0040] A floating fine-tuning mechanism 7 is provided between the impeller body 3 and the cylinder 6;

[0041] The locking range mechanism 8 is connected to the floating fine adjustment mechanism 7 and is provided with four groups;

[0042] The floating fine-tuning mechanism 7 includes a retractable component 71 and an adjusting component 72;

[0043] The adjusting member 72 includes four pairs of inflatable rubber pads 725 , and a spherical cavity is defined in the middle of each of the inflatable rubber pads 725 .

[0044] The above scheme is adopted: a long groove is opened on the top of the mounting frame 4, and the cylinder 6 can slide in the long groove of the mounting frame 4 and be assisted in positioning by laser equipment, and then the cylinder 6 is clamped with the right-angle plate 5 and fixed by bolts to ensure the coaxiality of the suspension rod 711 and the bottom ring 2, so as to facilitate the assembly of the impeller body 3, and then during the docking process, the floating fine-tuning mechanism 7 and the locking range mechanism 8 cooperate with each other to improve the smoothness and efficiency of the docking of the impeller body 3, and the impeller bodies 3 of different specifications and sizes can be efficiently clamped and assembled.

[0045] like Figure 5 、 Figure 9 and Figure 10 As shown, the retractable member 71 includes a suspension rod 711 fixed to the output end of the cylinder 6, the suspension rod 711 is divided into two sections, a ball shaft 715 is fixed between the two sections of the suspension rod 711 by bolts, and the lower section of the suspension rod 711 extends to the inner cavity of the impeller body 3; the side wall of the suspension rod 711 is fixed with an electric push rod 714, the output end of the electric push rod 714 is fixed with a lifting ring 716, the inner cavity of the lifting ring 716 is slidably sleeved on the outer wall of the suspension rod 711, and the outer wall of the lifting ring 716 is equidistantly connected to four rotating rods 712, the middle parts of the four rotating rods 712 are all rotatably connected to support rods 713, and the four support rods 713 are rotatably connected to the suspension rod 711 through positioning blocks 717.

[0046] The above scheme is adopted: axial extrusion force is applied by the support rod 713 to drive four groups of circumferentially evenly distributed rotating rods 712 to produce synchronous rotational motion. The end of the lever arm of each group of rotating rods 712 is equipped with a double-acting linkage structure. When the rotating rod 712 is expanded outward to a preset angle, the clamping plate 724 set at its end forms a linkage cooperation with the open rubber sleeve 721, and a triple positioning guarantee is achieved through the mechanical limit structure, so that the open rubber sleeve 721 and the impeller body 3 form a surface contact stable support, completing a high-reliability lifting operation, and the clamping plate 724 abuts against the middle part of the inner cavity of the impeller body 3, which is beneficial to the subsequent fine-tuning process of the impeller body 3.

[0047] like Figure 7 As shown, the adjusting member 72 also includes a clamping plate 724 rotatably connected to the end of the rotating rod 712. The outer walls of the four clamping plates 724 are all sleeved with open rubber sleeves 721. Arc grooves are symmetrically opened on both sides of the clamping plates 724. The four open rubber sleeves 721 are all clamped in the arc grooves through a pair of inflatable rubber pads 725.

[0048] like Figure 7 and Figure 8 As shown, a pair of circular holes 723 are symmetrically opened on the side of the open rubber sleeve 721 away from the inflatable rubber cushion 725, and the middle side walls of the inflatable rubber cushion 725 are fixedly connected with a threaded interface 726, and the threaded interface 726 is consistent with the axis of the circular hole 723; the outer wall of the open rubber sleeve 721 close to the inflatable rubber cushion 725 is evenly covered with a rubber fluff layer 722, and the side of the inflatable rubber cushion 725 away from the threaded interface 726 is fixedly connected to the inner cavity of the open rubber sleeve 721, and the inflatable rubber cushion 725 and the open rubber sleeve 721 are made of the same material.

[0049] The above solution is adopted: the material of the threaded interface 726 is hard plastic, which is used to connect an external air pump. The air pipe of the air pump is passed through the circular hole 723, and the end is threadedly connected to the inner cavity of the threaded interface 726, so that the cavity of the inflatable rubber cushion 725 is connected to the air pump, so that the cavity can be inflated, and the open rubber sleeve 721 is appropriately curved, thereby pushing the inner cavity of the impeller body 3 to cause it to deflect slightly, effectively improving the assembly speed of the impeller body 3.

[0050] like Figure 12 As shown, the locking range mechanism 8 includes a fixed block 85 fixed to the inner cavity of the rotating rod 712. The rotating rod 712 is symmetrically provided with holes and slots on both sides of the fixed block 85. The rotating rod 712 and the fixed block 85 are connected together by a bidirectional screw 84.

[0051] like Figures 11 to 13As shown, the outer wall of the bidirectional screw 84 is symmetrically threaded with a pair of sliding lock plates 83, the outer walls of the pair of sliding lock plates 83 are both inserted and slide in the hole groove, and the two ends of the fixed block 85 are symmetrically fixed with a pair of elastic sleeves 82, and the pair of elastic sleeves 82 are both located on both sides of the rotating rod 712 and remain parallel.

[0052] like Figure 7 and Figure 11 As shown, both sides of the elastic jacket 82 are in contact with the sliding lock plate 83, and the elastic jacket 82 is movably connected to the limit rod 81 through the rubber layer 86; a pair of limit rods 81 are kept parallel to the rotating rod 712, and the end of the limit rod 81 is in contact with the open rubber sleeve 721.

[0053] The above solution is adopted: the end of the limiting rod 81 is abutted against the open rubber sleeve 721. The specific abutment degree can be determined according to the material and size of the actual impeller body 3, and a pressure sensor can be built into the open rubber sleeve 721 to realize real-time monitoring of contact stress, and then cooperate with the air pump to automatically adjust the air intake of the inflatable rubber cushion 725 to avoid pressure damage to the inner wall of the impeller body 3.

[0054] The working principle and use process of the present invention:

[0055] First, the staff installs the base ring 1 and the bottom ring 2 with bolts in turn, and sleeves the edges of the base ring 1 and the bottom ring 2 on both sides of the mounting frame 4 and fixes them with bolts. The laser equipment is used to assist in adjusting the position of the cylinder 6 so that its output end is basically coaxial with the bottom ring 2. The cylinder 6 is then clamped and fixed by the right-angle plates 5 on both sides. The impeller body 3 is sleeved on the lower section of the suspension rod 711 from bottom to top, and the electric push rod 714 is started to pull the lifting ring 716 downward, and then the support rod 713 and the positioning block 717 cooperate with each other, through the support rod 713 The rotating rods 712 are squeezed and pushed to rotate, causing the four rotating rods 712 to expand outward. The ends of the rotating rods 712 drive the clamping plates 724 and the open rubber sleeves 721 to abut against the inner cavity of the impeller body 3, completing the lifting of the impeller body 3. The ball shaft 715 divides the suspension rod 711 into two sections, and the suspension rod 711 of the lower section can make the impeller body 3 deflect within a certain range. Compared with the traditional sling method, the use of a solid suspension rod 711 connection can prevent the upper section of the suspension rod 711 from being affected by external factors such as wind speed, making the assembly process of the impeller body 3 more stable.

[0056] Secondly, start the cylinder 6 to make the suspension rod 711 drive the impeller body 3 to move down slowly and steadily. According to the distance between the outer wall of the impeller body 3 and the bottom ring 2, the position of the impeller body 3 needs to be deflected and fine-tuned. When the position relationship between the impeller body 3 and the bottom ring 2 is as follows: Figure 7As shown, to dock the impeller body 3 with the inner cavity of the bottom ring 2, it is necessary to start the external air pump to inflate the upper inflatable rubber cushion 725. Due to the obstruction of the arc groove of the clamping plate 724, the air pressure in the inner cavity of the inflatable rubber cushion 725 will cause the upper end of the open rubber sleeve 721 to bulge slightly outward, flexibly squeezing the inner surface of the impeller body 3 and cooperating with the ball shaft 715, thereby deflecting the upper side of the impeller body 3 to the right and the lower side to the left, so that the lower end of the impeller body 3 accurately enters the inner cavity of the bottom ring 2, and in the subsequent docking process, the air pressure injected into the inner cavities of the upper and lower inflatable rubber cushions 725 can be adjusted at any time, the deflection angle of the impeller body 3 can be fine-tuned, and the smoothness of the assembly of the impeller body 3 can be increased. The friction of the rubber sleeve 721 prevents the impeller body 3 from slipping when the clamping plate 724 and the open rubber sleeve 721 are slightly deflected. Furthermore, since the bottom of the impeller body 3 is annular, it may be slightly offset at any position. Gas can be injected into two adjacent inflatable rubber cushions 725 at the same time. When the injected gas amounts are consistent, the impeller body 3 deflects at a point between the two inflatable rubber cushions 725. Similarly, when different amounts of gas are injected into two adjacent inflatable rubber cushions 725, the offset point of the impeller body 3 also changes accordingly, thereby adjusting any point on the circumference of the impeller body 3 to slightly deflect, effectively preventing the impeller body 3 from getting stuck during the assembly and docking process.

[0057] Once again, after the rotating rod 712 pushes the clamping plate 724 and the open rubber sleeve 721 to clamp the impeller body 3, the staff can then push the limiting rod 81 toward the clamping plate 724 until the end of the limiting rod 81 abuts the open rubber sleeve 721, and then manually rotate the bidirectional screw 84 to move the symmetrical sliding locking plates 83 closer to each other until the elastic sleeve 82 is clamped and deformed. The radial extrusion force applied by the sliding locking plate 83 shrinks the inner diameter of the elastic sleeve 82, clamps the limiting rod 81, and increases the anti-slip property of the limiting rod 81 through the friction resistance of the elastic sleeve 82. The already positioned limiting rod 81 can limit The rotation range of the clamping plate 724, if the clamping plate 724 is slightly deflected, the deflection range is mainly provided by the elastic space on both sides of the open rubber sleeve 721 on the clamping plate 724, and the range of the limiting rod 81 can effectively cooperate with the inflatable rubber cushion 725 to flexibly push the impeller body 3 to cause a slight deflection. In addition, when clamping and assembling impeller bodies 3 of different sizes, the angle between the rotating rod 712 and the clamping plate 724 varies greatly. Therefore, by separately contacting the pair of limiting rods 81 with the two sides of the clamping plate 724, it is possible to always ensure that the left and right deflection ranges of the clamping plate 724 are the same, thereby improving the efficient adaptability of the clamp to impeller bodies 3 of different sizes.

[0058] Finally, by limiting the clamping plate 724 through the limiting rod 81 and cooperating with the extrusion force of the inflatable rubber pad 725, the impeller body 3 is slightly pushed up or down at any angle, causing the impeller body 3 to be slightly deflected, thereby preventing the impeller body 3 from getting stuck during the assembly process, which can effectively improve the efficiency of the assembly of the impeller body 3, and the open rubber sleeve 721 can be completely removed from the outer wall of the clamping plate 724 and replaced. During installation, one end of the clamping plate 724 must be inserted into the inner cavity of the open rubber sleeve 721 from the opening first, and the inflatable rubber pad 725 at the inserted end must be accurately inserted into the arc groove of the clamping plate 724, then the open rubber sleeve 721 is stretched, and the other end of the clamping plate 724 is inserted into the inner cavity of the open rubber sleeve 721 with the same operation, and finally the two are arranged to fit well.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A turbine impeller assembly fixture, comprising a base ring (1), wherein the top of the base ring (1) is fixedly connected to a bottom ring (2) by bolts, the top of the bottom ring (2) is fixedly connected to a mounting frame (4), a cylinder (6) is slidably passed through the top of the mounting frame (4), and the cylinder (6) is fixedly connected to the mounting frame (4) by a right-angle plate (5), characterized in that: Also includes: A floating fine-tuning mechanism (7) is provided between the impeller body (3) and the cylinder (6); A locking range mechanism (8), wherein the locking range mechanism (8) is connected to the floating fine adjustment mechanism (7) and is provided in four groups; Wherein, the floating fine-adjustment mechanism (7) comprises a retractable component (71) and an adjusting component (72); The adjusting member (72) includes four pairs of inflatable rubber pads (725), and the inflatable rubber pads (725) are each provided with a spherical cavity in the middle. The retractable member (71) includes a suspension rod (711) fixed to the output end of the cylinder (6), the suspension rod (711) is divided into two sections, a ball shaft (715) is fixed between the two sections of the suspension rod (711) by bolts, and the lower section of the suspension rod (711) extends to the inner cavity of the impeller body (3); The side wall of the suspension rod (711) is fixedly connected to an electric push rod (714), the output end of the electric push rod (714) is fixedly connected to a lifting ring (716), the inner cavity of the lifting ring (716) is slidably sleeved on the outer wall of the suspension rod (711), the outer wall of the lifting ring (716) is equidistantly connected to four rotating rods (712), the middle parts of the four rotating rods (712) are all rotatably connected to support rods (713), and the four support rods (713) are rotatably connected to the suspension rod (711) through positioning blocks (717); The adjusting member (72) further comprises a clamping plate (724) rotatably connected to the end of the rotating rod (712), the outer walls of the four clamping plates (724) are sleeved with open rubber sleeves (721), and arc grooves are symmetrically formed on both sides of the clamping plates (724), and the four open rubber sleeves (721) are clamped in the arc grooves through a pair of inflatable rubber pads (725); The locking range mechanism (8) includes a fixed block (85) fixed to the inner cavity of the rotating rod (712), the rotating rod (712) is symmetrically provided with holes and slots on both sides of the fixed block (85), and the rotating rod (712) and the fixed block (85) are connected together by a bidirectional screw (84); The outer wall of the bidirectional screw (84) is symmetrically threaded with a pair of sliding lock plates (83), and the outer walls of the pair of sliding lock plates (83) are both penetrated and slid in the hole groove. The two ends of the fixed block (85) are symmetrically fixed with a pair of elastic jackets (82), and the pair of elastic jackets (82) are both located on both sides of the rotating rod (712) and remain parallel. Both sides of the elastic jacket (82) are in contact with the sliding lock plate (83), and the elastic jacket (82) is movably sleeved on the limit rod (81) through the rubber layer (86); The pair of limiting rods (81) are both kept parallel to the rotating rod (712), and the ends of the limiting rods (81) are in contact with the open rubber sleeve (721).

2. The turbine impeller assembly fixture according to claim 1, characterized in that: A pair of circular holes (723) are symmetrically formed on one side of the open rubber sleeve (721) away from the inflatable rubber cushion (725), and the middle side walls of the inflatable rubber cushion (725) are fixedly connected to threaded interfaces (726), and the axis of the threaded interfaces (726) is consistent with the axis of the circular holes (723).

3. The turbine impeller assembly fixture according to claim 2, characterized in that: The outer wall of the open rubber sleeve (721) on the side close to the inflatable rubber pad (725) is evenly paved with a rubber fluff layer (722), and the side of the inflatable rubber pad (725) away from the threaded interface (726) is fixed to the inner cavity of the open rubber sleeve (721), and the inflatable rubber pad (725) and the open rubber sleeve (721) are made of the same material.

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