Tool for improving assembly efficiency of large impeller and shaft

Abstract

The utility model discloses a tool for improving the assembling efficiency of a large impeller and a shaft, which comprises the impeller and the shaft, a cylindrical tool is arranged between the impeller and the shaft, and four positioning through holes are formed in the cylindrical tool along the axial direction and are distributed along the circumference of the axis of the shaft at equal intervals. Connecting screw holes are formed in the positions, corresponding to the positioning through holes, of the axial end face of the shaft, a connecting bolt is arranged in each positioning through hole, the connecting bolts penetrate through the positioning through holes and are connected with the corresponding connecting screw holes, and the diameter of the end, away from the shaft, of the cylindrical tool is smaller than that of the end, connected with the shaft, of the cylindrical tool. The tool for improving the assembling efficiency of the large impeller and the shaft has the advantages that one-time assembling and positioning are achieved, the assembling efficiency is high, and the assembling cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of kites, and in particular relates to a tool for improving the assembly efficiency of a large impeller and a shaft. Background Art

[0002] The assembly efficiency of large impellers and shafts directly affects the performance and cost of the pump. The traditional assembly method requires repeated positioning of the impeller and shaft to complete the assembly. In addition, the assembly clearance between large impellers and shafts is small, and the impeller itself weighs up to 1500KG, making it impossible to achieve one-time positioning and assembly of large impellers and shafts. This results in low assembly efficiency, complex assembly process, and high assembly cost. Utility Model Content

[0003] The purpose of the utility model is to provide a tool for improving the assembly efficiency of a large impeller and a shaft, so as to solve the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A tooling for improving the assembly efficiency of large impellers and shafts, comprising an impeller and a shaft, wherein a cylindrical tooling is arranged between the impeller and the shaft, wherein four positioning through holes are opened in the axial direction of the cylindrical tooling and are evenly spaced along the circumference of the axis of the shaft, wherein a connecting screw hole is opened at a position corresponding to each positioning through hole on the axial end face of the shaft, wherein a connecting bolt is arranged in each positioning through hole, wherein the connecting bolt passes through the positioning through hole and is connected to the corresponding connecting screw hole, and wherein the diameter of the cylindrical tooling at one end away from the shaft is smaller than the diameter of the end connected to the shaft.

[0006] The working process and principle of the above structure are as follows:

[0007] The connecting bolts are passed through the positioning through holes and combined with the tooling cylinder, and then connected and assembled into the connecting screw holes of the shaft. The impeller is introduced into the cylindrical tooling, and the conical surface transition of the cylindrical tooling is used to facilitate centering, quickly insert the cylindrical tooling into the impeller, and at the same time facilitate the coordination between the shaft and the impeller, thus realizing the tooling for one-time positioning and assembly of such large impellers and shafts.

[0008] Furthermore, a weight-reducing through hole is provided at a central position in the axial direction of the cylindrical tooling, and a diameter of the weight-reducing through hole is larger than a diameter of the positioning through hole.

[0009] The weight-reducing through hole can reduce the weight of the cylindrical tooling and save the cost of the cylindrical tooling.

[0010] Furthermore, the connecting bolts are hexagonal bolts.

[0011] The setting of the hexagonal bolts makes it easier to tighten and loosen the connecting bolts.

[0012] Furthermore, the edge of the end of the cylindrical tooling away from the shaft is rounded.

[0013] The rounded corners of the cylindrical tooling are more conducive to the rapid insertion of the cylindrical tooling into the impeller, thereby improving assembly efficiency.

[0014] Furthermore, the end of the cylindrical fixture away from the shaft is tapered.

[0015] The conical shape of the end of the cylindrical fixture away from the shaft is more conducive to the rapid insertion of the cylindrical fixture into the impeller, thereby improving assembly efficiency.

[0016] Beneficial effect: The utility model combines the connecting bolts with the tooling cylinder through the positioning through hole, and then connects and assembles them into the connecting screw hole of the shaft, guides the impeller onto the cylindrical tooling, and utilizes the conical surface transition of the cylinder to be more conducive to centering, quickly inserts the cylindrical tooling into the impeller, and at the same time facilitates the coordination between the shaft and the impeller, thereby realizing a tooling for one-time positioning and assembly of such large impellers and shafts, thereby improving assembly efficiency and assembly quality, reducing assembly costs, and improving assembly safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main view of the overall structure of the utility model;

[0018] Figure 2 This is the main sectional view of the cylindrical tooling in the utility model;

[0019] Figure 3 It is a top view of the cylindrical tooling in the utility model;

[0020] Figure 4 This is a front view of a cylindrical tooling in another embodiment of the present utility model;

[0021] Figure 5 This is a front view of a cylindrical tooling according to another embodiment of the present invention.

[0022] Figure numerals: 1. impeller; 2. shaft; 3. cylindrical tooling; 4. positioning through hole; 5. connecting screw hole; 6. connecting bolt; 7. weight-reducing through hole. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. Example

[0024] like Figure 1-Figure 3 As shown, this embodiment provides a tooling for improving the assembly efficiency of large impellers and shafts, including an impeller 1 and a shaft 2, with a cylindrical tooling 3 disposed between the impeller 1 and the shaft 2. The cylindrical tooling 3 is provided with four positioning through-holes 4 along the axis of the shaft 2 and distributed at equal intervals along the circumference of the axis of the shaft 2. The provision of the four positioning through-holes 4 makes the positioning connection more stable and accurate. A connecting screw hole 5 is provided on the axial end face of the shaft 2 at a position corresponding to each positioning through-hole 4, and a connecting bolt 6 is provided in each positioning through-hole 4. The connecting bolt 6 passes through the positioning through-hole 4 and is connected to the corresponding connecting screw hole 5. The diameter of the cylindrical tooling 3 at the end away from the shaft 2 is smaller than the diameter of the end connected to the shaft 2, and the diameter of the cylindrical tooling 3 at the end connected to the shaft 2 is the same as the diameter of the shaft 2.

[0025] The working process and principle of the above structure are as follows:

[0026] The connecting bolt 6 is passed through the positioning through hole 4 and combined with the tooling cylinder, and then connected and assembled into the connecting screw hole 5 of the shaft 2. The impeller 1 is introduced into the cylindrical tooling 3. The conical surface transition of the cylindrical tooling 3 is utilized to quickly insert the cylindrical tooling 3 into the impeller 1 and at the same time facilitate the cooperation between the shaft 2 and the impeller 1, thereby realizing a tooling for one-time positioning and assembly of this type of large impeller 1 and shaft 2.

[0027] In another embodiment of the present invention, Figure 3 As shown, a weight-reducing through hole 7 is provided at the center of the cylindrical fixture 3 in the direction of the axis 2 , and the diameter of the weight-reducing through hole 7 is larger than the diameter of the positioning through hole 4 .

[0028] The weight-reducing through hole 7 can reduce the weight of the cylindrical tooling 3 , saving the cost of the cylindrical tooling 3 .

[0029] In another embodiment of the present invention, Figure 1 As shown, the connecting bolt 6 is a hexagonal bolt.

[0030] The provision of the hexagonal bolt makes it easier to tighten and loosen the connecting bolt 6 .

[0031] In another embodiment of the present invention, Figure 4 As shown, the end edge of the cylindrical tool 3 away from the shaft 2 is rounded.

[0032] The rounded corners of the cylindrical fixture 3 are more conducive to quickly inserting the cylindrical fixture 3 into the impeller 1, thereby improving assembly efficiency.

[0033] In another embodiment of the present invention, Figure 5 As shown, the end of the cylindrical fixture 3 away from the shaft 2 is tapered.

[0034] The conical shape of the end of the cylindrical fixture 3 away from the shaft 2 is more conducive to the rapid insertion of the cylindrical fixture 3 into the impeller 1, thereby improving assembly efficiency.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A tool for improving the assembly efficiency of a large impeller and a shaft, comprising an impeller and a shaft, characterized in that: A cylindrical tooling is provided between the impeller and the shaft, and four positioning through holes are provided on the cylindrical tooling along the axial direction and are evenly spaced along the circumference of the axis of the shaft. A connecting screw hole is provided on the axial end face of the shaft at a position corresponding to each positioning through hole, and a connecting bolt is provided in each positioning through hole. The connecting bolt passes through the positioning through hole and is connected to the corresponding connecting screw hole. The diameter of the cylindrical tooling away from the shaft is smaller than the diameter of the end connected to the shaft.

2. The tooling for improving the assembly efficiency of large impellers and shafts according to claim 1 is characterized in that: A weight-reducing through hole is provided at the central position of the cylindrical tooling in the axial direction, and the diameter of the weight-reducing through hole is larger than the diameter of the positioning through hole.

3. The tooling for improving the assembly efficiency of large impellers and shafts according to claim 1 is characterized in that: The connecting bolts are hexagonal bolts.

4. The tooling for improving the assembly efficiency of large impellers and shafts according to claim 1, characterized in that: The edge line of the end of the cylindrical tooling away from the shaft is rounded.

5. The tool for improving the assembly efficiency of large impellers and shafts according to claim 1, characterized in that: The end portion of the cylindrical fixture away from the shaft is tapered.

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