Shaft hub mounting and positioning device

Abstract

The utility model provides a shaft hub mounting and positioning device which comprises a first limiting part, a second limiting part and a third limiting part, the first limiting part is provided with a first limiting wall, the first limiting part is used for being arranged at the shaft end of a to-be-assembled shaft, and the first limiting wall is used for abutting against one end of a to-be-assembled shaft hub; the second limiting part is provided with a second limiting wall, and the second limiting wall is used for abutting against the other end of the to-be-assembled shaft hub; the first limiting part and the second limiting part are both connected to the connecting part, the first limiting wall and the second limiting wall are oppositely arranged, and the connecting part is used for adjusting the distance between the first limiting wall and the second limiting wall. The shaft hub mounting and positioning device can axially position the to-be-assembled shaft hub, can continuously limit the to-be-assembled shaft hub and can prevent the to-be-assembled shaft hub from axially moving during fixing, so that the axial positioning accuracy of the to-be-assembled shaft hub is improved, the assembling difficulty of the to-be-assembled shaft hub is reduced, and the assembling efficiency is improved. And the assembling efficiency of the to-be-assembled shaft hub is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of shaft hub installation, and in particular to a shaft hub installation positioning device. Background Art

[0002] In this field, the assembly of the shaft hub often relies on the axial positioning of the shaft end shoulder of the assembly shaft to ensure that the shaft hub can be assembled in place. However, since the shaft ends of some assembly shafts do not have shoulders, this makes it impossible to accurately perform axial positioning on the shaft hub to be assembled, which can easily lead to improper installation of the shaft hub to be assembled, affecting the normal operation of the device, and the shaft hub to be assembled needs to be reinstalled, wasting a lot of labor costs and time costs. Utility Model Content

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, the present disclosure provides a hub installation and positioning device.

[0005] In view of this, according to an embodiment of the present disclosure, a shaft hub installation and positioning device is proposed, comprising:

[0006] A first limiting portion, comprising a first limiting wall, the first limiting portion being used to be arranged at the shaft end of the shaft to be assembled, and the first limiting wall being used to abut against one end of the shaft hub to be assembled;

[0007] A second limiting portion having a second limiting wall, the second limiting wall being used to abut against the other end of the shaft hub to be assembled;

[0008] The connecting part, the first limiting part and the second limiting part are both connected to the connecting part, the first limiting wall and the second limiting wall are arranged opposite to each other, and the connecting part is used to adjust the distance between the first limiting wall and the second limiting wall.

[0009] In a feasible implementation manner, the second limiting portion is an annular structure, a second limiting wall is formed at one axial end of the second limiting portion, and an inner circumferential wall of the second limiting portion is used for clearance fit with the shaft to be assembled.

[0010] In a feasible implementation, the second limiting portion includes at least two arc-shaped members, and the at least two arc-shaped members are sequentially connected along the arc direction to form an annular structure, and one of the two adjacent arc-shaped members is detachably connected to the other.

[0011] In a feasible embodiment, one of two adjacent arc-shaped members is detachably bolted to the other; or

[0012] One of two adjacent arc-shaped members is detachably connected to the other one by tenon joint.

[0013] In a feasible implementation manner, the second limiting portion is provided with a deweighting groove.

[0014] In a feasible implementation, it also includes:

[0015] The fastener has a connecting hole in the first limiting portion, and the fastener is used to pass through the connecting hole and be connected to the shaft end of the shaft to be assembled.

[0016] In a feasible implementation manner, the number of the connecting parts is at least two, and the at least two connecting parts are arranged at intervals.

[0017] In a feasible implementation manner, the connecting portion includes:

[0018] The adjusting bolt has a first matching hole formed in the first limiting portion and a second matching hole formed in the second limiting portion. The adjusting bolt is movably inserted into the first matching hole and the second matching hole. The head of the adjusting bolt is located at a side of the second limiting portion away from the first limiting portion.

[0019] The adjusting nut is threadedly connected to the adjusting bolt, and the adjusting nut is located on a side of the first limiting portion away from the second limiting portion.

[0020] In a feasible implementation manner, the connecting portion includes:

[0021] A telescopic rod, wherein the fixed end of the telescopic rod is connected to the first limiting wall, and the telescopic end of the telescopic rod is connected to the second limiting wall.

[0022] In a feasible implementation manner, the connecting portion includes:

[0023] An elastic member, one end of the elastic member is connected to the first limiting wall, and the other end of the elastic member is connected to the second limiting wall.

[0024] Compared with the prior art, the present disclosure includes at least the following beneficial effects: the shaft hub installation and positioning device provided in the embodiment of the present disclosure includes: a first limiting portion, having a first limiting wall, the first limiting portion is used to be arranged on the shaft end of the shaft to be assembled, and the first limiting wall is used to abut against one end of the shaft hub to be assembled; a second limiting portion, having a second limiting wall, the second limiting wall is used to abut against the other end of the shaft hub to be assembled; a connecting portion, the first limiting portion and the second limiting portion are both connected to the connecting portion, the first limiting wall and the second limiting wall are arranged opposite to each other, and the connecting portion is used to adjust the distance between the first limiting wall and the second limiting wall. The shaft hub installation and positioning device provided in the embodiment of the present disclosure is based on the above-mentioned setting, and can directly limit the axial freedom of the shaft hub from both ends of the shaft hub in the axial direction, and push the shaft hub to a preset assembly position to achieve an axial positioning effect, which can not only improve the efficiency of shaft hub positioning, but also help to improve the positioning accuracy during the shaft hub assembly process. At the same time, after the shaft hub is positioned, during the process of installing and fixing the shaft hub, the shaft hub installation and positioning device can also continuously limit the shaft hub to avoid axial movement of the shaft hub. No manual control is required, which reduces the difficulty of assembling the shaft hub, improves the assembly efficiency of the shaft hub, and further saves labor costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic structural diagram of a shaft hub installation and positioning device according to an embodiment of the present disclosure;

[0027] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0028] A first limiting portion 110, a second limiting portion 120, and a connecting portion 130;

[0029] Arc-shaped member 121, adjusting bolt 131, adjusting nut 132;

[0030] Connecting hole 1101, de-weighting groove 1201. DETAILED DESCRIPTION

[0031] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] like Figure 1 As shown, according to an embodiment of the present disclosure, a hub installation and positioning device is proposed, including: a first limiting portion 110, having a first limiting wall, the first limiting portion 110 is used to be arranged on the shaft end of the shaft to be assembled, and the first limiting wall is used to abut against one end of the hub to be assembled; a second limiting portion 120, having a second limiting wall, and the second limiting wall is used to abut against the other end of the hub to be assembled; a connecting portion 130, the first limiting portion 110 and the second limiting portion 120 are both connected to the connecting portion 130, the first limiting wall and the second limiting wall are arranged opposite to each other, and the connecting portion 130 is used to adjust the distance between the first limiting wall and the second limiting wall.

[0033] The shaft hub installation and positioning device proposed in the embodiment of the present disclosure includes a first limiting portion 110, a second limiting portion 120 and a connecting portion 130, wherein the first limiting portion 110 is connected to the second limiting portion 120 by the connecting portion 130, the first limiting portion 110 has a first limiting wall, the second limiting portion 120 has a second limiting wall, the shaft hub to be assembled is used to be placed between the first limiting wall and the second limiting wall which are arranged relatively, the first limiting wall of the first limiting portion 110 is used to limit the axial freedom of one end of the shaft hub to be assembled, the second limiting wall of the second limiting portion 120 is used to limit the axial freedom of the other end of the shaft hub to be assembled, and the connecting portion 130 can adjust the distance between the first limiting wall and the second limiting wall so that the second limiting wall is close to or away from the first limiting wall; in actual application, the first limiting portion 110 is arranged at the shaft end of the shaft to be assembled, Under the adjustment action of the connecting part 130, the connecting part 130 can drive the second limiting part 120 to move so that the second limiting part 120 moves in the direction close to the first limiting part 110, that is, the second limiting wall moves in the direction close to the first limiting wall. As the distance between the first limiting wall and the second limiting wall gradually decreases, the axial freedom of the hub to be assembled on the shaft to be assembled is also gradually reduced. At the same time, in the process of the second limiting wall approaching the first limiting wall, the second limiting wall can abut against the hub to be assembled, and then the second limiting member can push the hub to be assembled, so that the hub to be assembled moves in the direction close to the first limiting wall, until the first limiting wall and the second limiting wall abut against both ends of the hub to be assembled at the same time. At this time, the hub to be assembled is restricted to the preset assembly position on the shaft to be assembled and cannot move axially, so the hub to be assembled can be installed and fixed.

[0034] It can be understood that since the hub to be assembled is assembled on the shaft to be assembled, the radial freedom of the hub to be assembled is limited by the shaft to be assembled. Therefore, the first limiting portion 110 and the second limiting portion 120 only need to limit the axial freedom of the hub to be assembled from both ends of the hub to be assembled, so that the hub to be assembled can be limited to the preset assembly position, thereby realizing the axial positioning of the hub to be assembled on the shaft to be assembled, and then facilitating the installation and fixation of the hub to be assembled.

[0035] It can be understood that the axial direction of the shaft hub to be assembled is in the same direction as the axial direction of the shaft to be assembled, and the radial direction of the shaft hub to be assembled is in the same direction as the radial direction of the shaft to be assembled.

[0036] It is understandable that the hub to be assembled may be a coupling, or a gear, a cam, etc., and no further limitation is given here.

[0037] It should be noted that when assembling a hub on an assembly shaft without a positioning shoulder, the existing assembly method often relies solely on the worker's eyesight to perform axial positioning of the hub to be assembled. This positioning method is limited by the worker's assembly experience and cannot ensure that the hub to be assembled can be accurately in the preset assembly position. In addition, during the assembly of the hub to be assembled, the worker is required to continuously control the hub to be assembled to prevent the hub to be assembled from axial movement that affects the assembly effect. The whole process is time-consuming and labor-intensive. The hub installation and positioning device proposed in the embodiment of the present disclosure is based on the aforementioned setting. It can directly limit the axial freedom of the hub to be assembled from both ends of the axial direction of the hub to be assembled, and push the hub to be assembled to the preset assembly position to achieve the axial positioning effect. It can not only improve the positioning efficiency of the hub to be assembled, but also help to improve the positioning accuracy during the assembly process of the hub to be assembled. At the same time, after the hub to be assembled is positioned, during the installation and fixing of the hub to be assembled, the hub installation and positioning device can also continuously limit the hub to be assembled to prevent the hub to be assembled from axial movement, thereby reducing the assembly difficulty of the hub to be assembled, improving the assembly efficiency of the hub to be assembled, and further saving labor costs and time costs.

[0038] In some examples, such as Figure 1 As described above, the second limiting portion 120 is an annular structure, and a second limiting wall is formed at one axial end of the second limiting portion 120 , and the inner circumferential wall of the second limiting portion 120 is used for clearance fit with the shaft to be assembled.

[0039] In the above technical solution, the second limiting portion 120 can adopt an annular structure, which is conducive to the second limiting portion 120 being able to adapt to the shaft to be installed on the one hand, and is conducive to the stable movement of the second limiting portion 120, avoiding the second limiting portion 120 from rotating relative to the shaft to be installed under the action of gravity during the movement, and on the other hand, it can make the second limiting portion 120 apply more uniform and stable force when pushing the shaft hub to be assembled to move; the inner circumferential wall of the second limiting portion 120 and the shaft to be assembled adopt a clearance fit, which can facilitate the second limiting portion 120 to be installed on the shaft to be assembled, and facilitate the second limiting portion 120 to slide on the shaft to be assembled, which is conducive to the connecting portion 130 to adjust the distance between the second limiting portion 120 and the first limiting portion 110, and at the same time, it can avoid the second limiting portion 120 from being deflected during the movement, which is conducive to making the second limiting wall of the second limiting portion 120 in a translational state during the movement, so that the shaft hub to be assembled can be better positioned axially, which is conducive to improving the accuracy of the axial positioning of the shaft hub to be assembled.

[0040] It should be noted that the inner circumferential wall of the second limiting portion 120 can be understood as the inner ring of the annular structure. When the second limiting portion 120 is sleeved on the shaft to be assembled, the surface of the second limiting portion 120 abutting against the shaft to be assembled is the inner circumferential wall of the second limiting portion 120.

[0041] In some examples, such as Figure 1 As described above, the second limiting portion 120 includes at least two arc-shaped members 121 , and the at least two arc-shaped members 121 are sequentially connected along the arc direction to form an annular structure, and one of the two adjacent arc-shaped members 121 is detachably connected to the other.

[0042] In the above technical solution, the second limiting portion 120 may include at least two arc-shaped members 121, and these arc-shaped members 121 may be connected in sequence along the arc direction to form an annular structure. At the same time, the two connected arc-shaped members 121 are detachably connected. Such a configuration can facilitate the removal of the second limiting portion 120 from the shaft to be assembled. In actual application, after the assembly of the shaft hub to be assembled is completed, the second limiting portion 120 cannot be removed from the shaft end of the shaft to be assembled due to the limitation of the assembled shaft hub. At this time, the connection between adjacent arc-shaped members 121 can be disconnected, and the second limiting portion 120 can be removed from the assembly shaft.

[0043] It is understandable that the above technical solution can also enable the second limit portion 120 to be sleeved on the shaft to be assembled from the shaft end of the shaft to be assembled, and to be directly assembled on the shaft to be assembled through the arc-shaped member 121, so as to be more conducive to adapting to various working conditions.

[0044] In some examples, such as Figure 1As described above, one of the two adjacent arc-shaped members 121 is detachably bolted to the other; or one of the two adjacent arc-shaped members 121 is detachably mortised to the other.

[0045] In the above technical solution, two adjacent arc-shaped members 121 can be connected by bolts, so that one of the two adjacent arc-shaped members 121 can be detachably connected to the other. This connection method can make the connection between the two adjacent arc-shaped members 121 more reliable, and at the same time, it is easy and convenient to disassemble and assemble, the manufacturing process is simple, and the cost is low.

[0046] In the above technical solution, a mortise and tenon connection method can be adopted between two adjacent arc-shaped parts 121, so that one of the two adjacent arc-shaped parts 121 can be detachably connected to the other. This connection method does not require the use of other components and can achieve a stable connection between the two adjacent arc-shaped parts 121. At the same time, it can make the assembly between the two adjacent arc-shaped parts 121 more convenient, which is beneficial to improving the efficiency of axial positioning of the hub to be assembled.

[0047] In some examples, such as Figure 1 As mentioned above, the second limiting portion 120 is provided with a deweighting groove 1201 .

[0048] In the above technical solution, the second limiting portion 120 may be provided with a deweighting groove 1201 for reducing the weight of the second limiting portion 120 to facilitate the assembly or disassembly of the second limiting portion 120, and also to facilitate the connecting portion 130 to adjust the second limiting portion 120 to be close to or away from the first limiting portion 110.

[0049] It is understandable that the deweighting groove 1201 can be opened at any position of the second limiting portion 120 and can adopt any shape without affecting the positioning of the shaft hub to be assembled. For example, it can be opened in a ring shape on the second limiting wall. No further restrictions are made here.

[0050] In some examples, such as Figure 1 The assembly further includes: a fastener, wherein the first limiting portion 110 is provided with a connecting hole 1101 , and the fastener is used to pass through the connecting hole 1101 and be connected to the shaft end of the shaft to be assembled.

[0051] In the above technical solution, the first limiting portion 110 is provided with a connecting hole 1101, and the fastener can pass through the connecting hole 1101 to be connected to the axial end of the shaft to be assembled, so that the first limiting portion 110 can be assembled on the axial end of the shaft to be assembled through the fastener, making the disassembly and assembly of the first limiting portion 110 more convenient.

[0052] In some examples, such as Figure 1 As described above, the number of the connecting parts 130 is at least two, and at least two connecting parts 130 are arranged at intervals.

[0053] In the above technical solution, at least two connecting parts 130 are used in the hub installation and positioning device. The two connecting parts 130 can adjust the first limiting part 110 to be close to or away from the second limiting part 120, which is beneficial to ensure that the first limiting wall and the second limiting wall are parallel to each other, thereby facilitating the improvement of the accuracy of the axial positioning of the hub to be assembled. At the same time, at least two connecting parts 130 are arranged at intervals, so that the force applied by the connecting parts 130 to the first limiting part 110 and the second limiting part 120 can be more balanced, making it easier for the connecting parts 130 to adjust the distance between the first limiting part 110 and the second limiting part 120, and at the same time, it is beneficial to further ensure the parallel relationship between the first limiting wall and the second limiting wall, which is beneficial to improving the accuracy of the axial positioning of the hub to be assembled.

[0054] In some examples, such as Figure 1 The connecting part 130 includes: an adjusting bolt 131, a first matching hole is opened in the first limiting part 110, and a second matching hole is opened in the second limiting part 120, and the adjusting bolt 131 is movably inserted into the first matching hole and the second matching hole, and the head of the adjusting bolt 131 is located on the side of the second limiting part 120 away from the first limiting part 110; an adjusting nut 132, which is threadedly connected to the adjusting bolt 131, and the adjusting nut 132 is located on the side of the first limiting part 110 away from the second limiting part 120.

[0055] In the above technical solution, the connecting portion 130 may include an adjusting bolt 131 and an adjusting nut 132, and the adjusting bolt 131 and the adjusting nut 132 are threadedly connected. A first matching hole and a second matching hole for passing the adjusting bolt 131 are respectively provided in the first limiting portion 110 and the second limiting portion 120, so that the first limiting portion 110 and the second limiting portion 120 can be connected through the adjusting bolt 131 and the adjusting nut 132, and the first limiting portion 110 and the second limiting portion 120 can be adjusted by adjusting the thread stroke of the adjusting nut 132 on the adjusting bolt 131. The distance between the limiting parts 120, that is, the distance between the first limiting wall and the second limiting wall can be adjusted; at the same time, the head of the adjusting bolt 131 is located on the side of the second limiting part 120 away from the first limiting part 110, and the adjusting nut 132 is located on the side of the first limiting part 110 away from the second limiting part 120. Since the first limiting part 110 is located at the axial end of the shaft to be assembled, the arrangement of the adjusting bolt 131 and the adjusting nut 132 can make the adjustment of the adjusting nut 132 more convenient, and can avoid interference between the adjustment tool and the shaft to be assembled during the adjustment process.

[0056] In some examples, the connection portion 130 includes: a telescopic rod, a fixed end of the telescopic rod is connected to the first limiting wall, and a telescopic end of the telescopic rod is connected to the second limiting wall.

[0057] In the above technical solution, the connecting part 130 may include a telescopic rod, and the fixed end of the telescopic rod is connected to the first limiting wall, and the telescopic end of the telescopic rod is connected to the second limiting wall, so as to facilitate the adjustment of the telescopic end of the telescopic rod to be close to or away from the fixed end of the telescopic rod, thereby realizing the second limiting wall being close to or away from the first limiting wall, and further realizing the axial positioning of the hub to be assembled.

[0058] In some examples, the connection portion 130 includes an elastic member, one end of the elastic member is connected to the first limiting wall, and the other end of the elastic member is connected to the second limiting wall.

[0059] In the above technical solution, the connecting portion 130 may include an elastic member, wherein one end of the elastic member is connected to the first limiting wall, and the other end of the elastic member is connected to the second limiting wall. In practical applications, the elastic member can be kept in a stretched state first, and the shaft hub to be assembled is arranged between the first limiting wall and the second limiting wall. At this time, the elastic member is released, and under the action of the elastic force, the two ends of the elastic member are brought close to each other, thereby driving the first limiting wall and the second limiting wall to approach each other. Since the first limiting portion 110 is arranged at the shaft end of the shaft to be assembled and cannot move toward the second limiting portion 120, the second limiting portion 120 moves toward the first limiting portion 110 under the action of the elastic force, thereby realizing the axial positioning of the shaft hub to be assembled.

[0060] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0061] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0062] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A hub installation and positioning device, characterized in that: include: A first limiting portion, comprising a first limiting wall, wherein the first limiting portion is used to be arranged at the shaft end of the shaft to be assembled, and the first limiting wall is used to abut against one end of the shaft hub to be assembled; A second limiting portion, comprising a second limiting wall, wherein the second limiting wall is used to abut against the other end of the shaft hub to be assembled; A connecting portion, the first limiting portion and the second limiting portion are both connected to the connecting portion, the first limiting wall and the second limiting wall are arranged opposite to each other, and the connecting portion is used to adjust the distance between the first limiting wall and the second limiting wall.

2. The shaft hub installation and positioning device according to claim 1, characterized in that: The second limiting portion is an annular structure, and one axial end of the second limiting portion is formed with the second limiting wall. The inner circumferential wall of the second limiting portion is used for clearance fit with the shaft to be assembled.

3. The shaft hub installation and positioning device according to claim 2, characterized in that: The second limiting portion includes at least two arc-shaped members, and the at least two arc-shaped members are sequentially connected along an arc direction to form the annular structure, and one of the two adjacent arc-shaped members is detachably connected to the other.

4. The shaft hub installation and positioning device according to claim 3, characterized in that: One of the two adjacent arc-shaped members is detachably bolted to the other; or One of the two adjacent arc-shaped members is detachably connected to the other one by tenon joint.

5. The shaft hub installation and positioning device according to claim 2, characterized in that: The second limiting portion is provided with a weight removal groove.

6. The shaft hub installation and positioning device according to claim 1, characterized in that: Also includes: The first limiting portion is provided with a connecting hole, and the fastener is used to pass through the connecting hole and be connected to the shaft end of the shaft to be assembled.

7. The shaft hub installation and positioning device according to claim 1, characterized in that: The number of the connecting parts is at least two, and at least two of the connecting parts are arranged at intervals.

8. The shaft hub installation and positioning device according to any one of claims 1 to 7, characterized in that: The connecting portion comprises: An adjusting bolt, wherein the first limiting portion is provided with a first matching hole, the second limiting portion is provided with a second matching hole, the adjusting bolt is movably inserted into the first matching hole and the second matching hole, and the head of the adjusting bolt is located at a side of the second limiting portion away from the first limiting portion; An adjusting nut is threadedly connected to the adjusting bolt, and the adjusting nut is located on a side of the first limiting portion that is away from the second limiting portion.

9. The shaft hub installation and positioning device according to any one of claims 1 to 7, characterized in that: The connecting portion comprises: A telescopic rod, wherein the fixed end of the telescopic rod is connected to the first limiting wall, and the telescopic end of the telescopic rod is connected to the second limiting wall.

10. The shaft hub installation and positioning device according to any one of claims 1 to 7, characterized in that: The connecting portion comprises: An elastic member, one end of which is connected to the first limiting wall, and the other end of which is connected to the second limiting wall.

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