Connecting shaft with hoisting plate

Abstract

The utility model relates to the field of hoisting tools, in particular to a connecting shaft with a hoisting plate, which comprises a cylindrical shaft, the left end of the shaft is provided with a first flange extending outwards, and the first flange is provided with first bolt holes at equal intervals; the right end of the shaft is provided with a second flange extending outwards, the second flange is provided with a second bolt hole, the shaft is sleeved with an annular plate, and the annular plate is located between the first flange and the second flange; a notch with an outward opening is formed in the annular plate, and the minimum distance between the notch and the central axis of the shaft is not larger than the smaller one of the distance between the first bolt hole and the central axis of the shaft and the distance between the second bolt hole and the central axis of the shaft. A hoisting hole is formed in the annular plate, and the distance from the hoisting hole to the central axis of the shaft is not smaller than the larger one of the distance from the first bolt hole to the central axis of the shaft and the distance from the second bolt hole to the central axis of the shaft; therefore, the shaft can be conveniently hoisted and assembled.

Description

Technical Field

[0001] This utility model relates to the field of lifting tools, and in particular to a coupling shaft with a lifting plate. Background Technology

[0002] When assembling and disassembling the rotor and stator of a large motor in a small factory, a horizontal assembly and disassembly method is generally used. Horizontal assembly and disassembly can be carried out in spaces with limited height, avoiding the complex operation of vertical lifting and lowering, which is suitable for environments with limited space.

[0003] When the rotor is being installed or removed laterally from the stator, if the rotor shaft is short, an extension shaft needs to be added after the rotor is inserted laterally into the stator to ensure that the rotor shaft can exit through the stator. However, because the rotor shaft of a large motor is large in size and weight, it is quite difficult to lift and install the extension shaft onto the rotor shaft. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution;

[0006] The shaft with a lifting plate includes a cylindrical shaft. The left end of the shaft has a first flange extending outward, and the first flange has first bolt holes at equal intervals. The right end of the shaft has a second flange extending outward, and the second flange has a second bolt hole at a position directly opposite to the first bolt hole.

[0007] A ring-shaped plate is sleeved on the shaft, and the ring-shaped plate is located between the first flange and the second flange;

[0008] The annular plate has an outward-facing notch, and the minimum distance from the notch to the central axis of the shaft is not greater than the smaller of the distance from the first bolt hole to the central axis of the shaft and the distance from the second bolt hole to the central axis of the shaft.

[0009] The annular plate has lifting holes, and the distance from the lifting holes to the central axis of the shaft is not less than the larger of the distance from the first bolt hole to the central axis of the shaft and the distance from the second bolt hole to the central axis of the shaft.

[0010] First, this invention adds an annular plate to the connecting shaft, with lifting holes provided on the annular plate for lifting the connecting shaft. Second, this invention optimizes the annular plate by adding notches, allowing the lifting line connected to the first and second bolt holes to pass smoothly through the annular plate. Alternatively, any two of the lifting holes, the first bolt hole, and the second bolt hole can be selected as the through holes for the lifting line, and the tilt angle of the connecting shaft can be adjusted by utilizing the differences in the distances from the lifting holes, the first bolt hole, and the second bolt hole to the central axis of the shaft.

[0011] Preferably, the outer edge of the annular plate is wavy, and a lifting hole is formed between two adjacent notches. This makes the outer contour smooth and prevents sharp corners from scratching other components.

[0012] Preferably, the distance from the second bolt hole to the central axis of the shaft is equal to the distance from the first bolt hole to the shaft. The first and second bolt holes allow the connecting shaft to be horizontally suspended. Furthermore, the first and second bolt holes can be used to connect to the next connecting shaft, thereby extending the length of the connecting shaft as needed.

[0013] Preferably, the distance from the outer edge of the second flange to the central axis of the shaft is greater than the distance from the outer edge of the first flange to the central axis of the shaft. The second flange also has a third bolt hole, the distance from which the third bolt hole is located is greater than the distance from the second bolt hole to the central axis of the shaft, and the distance from the lifting hole to the central axis of the shaft is equal to the distance from the third bolt hole to the central axis of the shaft. This allows the shaft to be horizontally lifted using the third bolt hole and the lifting hole. Furthermore, the third bolt hole can also be used to connect shafts not conforming to this invention.

[0014] Preferably, a triangular first reinforcing plate is provided at equal intervals between the first flange and the shaft, and a triangular second reinforcing plate is provided at equal intervals between the second flange and the shaft, with the first and second reinforcing plates facing each other. This increases the connection strength at the first and second reinforcing plates using the first and second flanges.

[0015] Preferably, the annular plate is symmetrically provided with a third and fourth reinforcing plate in a triangular shape on both sides, and the third reinforcing plate and the first reinforcing plate are staggered. This increases the connection strength between the annular plate and the shaft by utilizing the third and fourth reinforcing plates. This invention, by having the reinforcing plates connecting the flange and the annular plate staggered, effectively increases the density of the reinforcing plates, thereby increasing the overall structural strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 A schematic diagram of the overall structure of the connecting shaft with a lifting plate according to an embodiment of this utility model;

[0018] Figure 2 This is a left-side view of the connecting shaft with a lifting plate, as described in one embodiment of the present invention. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0023] Example 1

[0024] Reference Figure 1 and Figure 2 The shaft with a lifting plate includes a cylindrical shaft 1. The left end of the shaft 1 is provided with an outwardly extending first flange 2, and the first flange 2 is provided with first bolt holes 21 at equal intervals. The right end of the shaft 1 is provided with an outwardly extending second flange 3, and the second flange 3 is provided with a second bolt hole 31 at a position directly opposite to the first bolt hole 21.

[0025] A ring-shaped plate 4 is fitted onto the shaft 1, and the ring-shaped plate 4 is located between the first flange 2 and the second flange 3;

[0026] The annular plate 4 has an outward-facing notch 42. The minimum distance from the notch 42 to the central axis of the shaft 1 is not greater than the smaller of the distance from the first bolt hole 21 to the central axis of the shaft 1 and the distance from the second bolt hole 31 to the central axis of the shaft 1.

[0027] The annular plate 4 has a lifting hole 41. The distance from the lifting hole 41 to the central axis of the shaft 1 is not less than the larger of the distance from the first bolt hole 21 to the central axis of the shaft 1 and the distance from the second bolt hole 31 to the central axis of the shaft 1.

[0028] This invention adds an annular plate 4 to the connecting shaft, and provides a lifting hole 41 on the annular plate 4, through which the connecting shaft can be lifted. Furthermore, this invention optimizes the annular plate 4 by providing a notch 42, allowing the lifting line connected to the first bolt hole 21 and the second bolt hole 31 to pass smoothly through the annular plate 4. Alternatively, any two of the lifting holes 41, the first bolt hole 21, and the second bolt hole 31 can be selected as the through holes for the lifting line. The tilt angle of the connecting shaft can be adjusted by utilizing the difference in distance from the lifting holes 41, the first bolt hole 21, and the second bolt hole 31 to the central axis of the shaft 1.

[0029] The outer edge of the annular plate 4 is wavy, and a lifting hole 41 is opened between two adjacent notches 42. This makes the outer contour smooth and prevents sharp corners from scratching other parts.

[0030] The distance from the second bolt hole 31 to the center axis of shaft 1 is equal to the distance from the first bolt hole 21 to shaft 1. The first bolt hole 21 and the second bolt hole 31 can be used to horizontally suspend the connecting shaft. Furthermore, the first bolt hole 21 and the second bolt hole 31 can be used to connect to the next connecting shaft, thereby extending the length of the connecting shaft as needed.

[0031] The distance from the outer edge of the second flange 3 to the central axis of the shaft 1 is greater than the distance from the outer edge of the first flange 2 to the central axis of the shaft 1. The second flange 3 also has a third bolt hole 33, the distance from the third bolt hole 33 to the central axis of the shaft 1 is greater than the distance from the second bolt hole 31 to the central axis of the shaft 1, and the distance from the lifting hole 41 to the central axis of the shaft 1 is equal to the distance from the third bolt hole 33 to the central axis of the shaft 1. Thus, the connecting shaft can be horizontally lifted using the third bolt hole 33 and the lifting hole 41. Furthermore, the third bolt hole 33 can also be used to connect connecting shafts not conforming to this invention.

[0032] In use, any two of the lifting holes 41, the first bolt hole 21, and the second bolt hole 31 can be selected as the through holes for the lifting line. The difference in distance from the lifting holes 41, the first bolt hole 21, and the second bolt hole 31 to the central axis of shaft 1 can be used to adjust the tilt angle of the connecting shaft, facilitating the connection between shaft 1 and rotor shaft 1 and extending the length of rotor shaft 1. This makes it easier to assemble the rotor into the stator. The connecting shaft can be horizontally lifted using the first bolt hole 21 and the second bolt hole 31. Furthermore, the first bolt hole 21 and the second bolt hole 31 can be used to connect to the next connecting shaft, thereby extending the length of the connecting shaft as needed. Alternatively, the connecting shaft can be horizontally lifted using the third bolt hole 33 and the lifting hole 41.

[0033] Example 2

[0034] Reference Figure 1 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0035] A triangular first reinforcing plate 22 is provided at equal intervals between the first flange 2 and the shaft 1, and a triangular second reinforcing plate 32 is provided at equal intervals between the second flange 3 and the shaft 1. The first reinforcing plate 22 and the second reinforcing plate 32 are directly opposite each other. Thus, the connection strength at the first reinforcing plate 22 and the second reinforcing plate 32 is increased by using the first flange 2 and the second flange 3.

[0036] The annular plate 4 has symmetrically arranged triangular third reinforcing plates 43 and 44 on both sides, with the third reinforcing plate 43 and the first reinforcing plate 22 interlaced. This increases the connection strength between the annular plate 4 and the shaft 1 by using the third reinforcing plates 43 and 44. This invention, by having the reinforcing plates connecting the flange and the annular plate 4 interlaced, effectively increases the density of the reinforcing plates, thereby increasing the overall structural strength.

[0037] In use, the connection strength at the first reinforcing plate 22 and the second reinforcing plate 32 is increased at the first flange 2 and the second flange 3, and the connection strength between the annular plate 4 and the shaft 1 is increased by the third reinforcing plate 43 and the fourth reinforcing plate 44. This utility model allows the reinforcing plates connecting the flanges and the reinforcing plates connecting the annular plate 4 to be staggered, which can effectively increase the density of the reinforcing plates, thereby increasing the overall structural strength.

[0038] It should be noted that the above description illustrates the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connecting shaft with a lifting plate, comprising a cylindrical shaft, wherein the left end of the shaft has an outwardly extending first flange, on which first bolt holes are equally spaced; and the right end of the shaft has an outwardly extending second flange, wherein the second flange has a second bolt hole at a position directly opposite to the first bolt hole, characterized in that: A ring-shaped plate is sleeved on the shaft, and the ring-shaped plate is located between the first flange and the second flange; The annular plate has an outward-facing notch, and the minimum distance from the notch to the central axis of the shaft is not greater than the smaller of the distance from the first bolt hole to the central axis of the shaft and the distance from the second bolt hole to the central axis of the shaft. The annular plate has lifting holes, and the distance from the lifting holes to the central axis of the shaft is not less than the larger of the distance from the first bolt hole to the central axis of the shaft and the distance from the second bolt hole to the central axis of the shaft.

2. The coupling with a lifting plate according to claim 1, characterized in that: The outer edge of the annular plate is wavy, and a hoisting hole is opened between two adjacent notches.

3. The coupling with a lifting plate according to claim 1, characterized in that: The distance from the second bolt hole to the central axis of the shaft is equal to the distance from the first bolt hole to the shaft.

4. The coupling with a lifting plate according to claim 1, characterized in that: The distance from the outer edge of the second flange to the central axis of the shaft is greater than the distance from the outer edge of the first flange to the central axis of the shaft. A third bolt hole is also provided on the second flange. The distance from the third bolt hole to the central axis of the shaft is greater than the distance from the second bolt hole to the central axis of the shaft. The distance from the lifting hole to the central axis of the shaft is equal to the distance from the third bolt hole to the central axis of the shaft.

5. The coupling with a lifting plate according to claim 1, 2, 3 or 4, characterized in that: A first reinforcing plate in a triangular shape is provided at equal intervals between the first flange and the shaft, and a second reinforcing plate in a triangular shape is provided at equal intervals between the second flange and the shaft, with the first and second reinforcing plates facing each other.

6. The coupling with a lifting plate according to claim 5, characterized in that: The annular plate is symmetrically provided with a third reinforcing plate and a fourth reinforcing plate in a triangular shape on both sides, and the third reinforcing plate and the first reinforcing plate are interleaved.

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