Tightening tool for locking nut of motor shaft
By designing the motor shaft lock nut tightening tool, the combination of the anti-rotating shaft and sleeve, combined with the force arm of the rotating wrench, the difficulty of tightening the motor shaft nut is solved, and the effect of easy operation, strong applicability and portability is achieved. .
Patent Information
- Application Number
- CN202323595496.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-27
AI Technical Summary
During the transmission trial production stage, due to the lack of general tooling during the tightening of the motor shaft nut, it is difficult to operate and difficult to prevent the motor shaft from rotating simultaneously, resulting in the complicated and inconvenient process of tightening the nut.
A motor shaft lock nut tightening tool is designed, including anti-rotation shaft, anti-rotation handle, sleeve and rotation wrench. By cooperating with the anti-rotation shaft, the sleeve and the lock nut are rotated together, and the rotating wrench provides a force arm to realize Easy tightening of lock nuts.
This tooling makes the tightening operation of the motor shaft lock nut more convenient and has strong applicability. It is suitable for small batches and multiple types of gearboxes, reducing cost and volume, making it easy to carry and transport, and is suitable for testing and dismantling airport scenes outside the workshop.
Smart Images
Figure CN222270129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle engineering, in particular to a motor shaft locking nut tightening tool. Background Art
[0002] The motor shaft of the gearbox is locked by a locking nut. During the process of tightening the locking nut, it is necessary to prevent the motor shaft from rotating synchronously. Special equipment is usually used to tighten the nuts during mass production of gearboxes, but there is a lack of universal tooling for tightening the nuts of small batches of various gearboxes during the trial production stage.
[0003] In the related art, the motor shaft nut tightening method in the gearbox trial production stage usually uses basic tools such as wrenches. Since it is also necessary to prevent the motor shaft from rotating synchronously when tightening the locking nut, the operation is very difficult. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor shaft locking nut tightening tool, which has the advantages of easy operation, strong applicability, and easy portability.
[0005] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a motor shaft locking nut tightening tool is proposed, and the motor shaft locking nut tightening tool comprises: an anti-rotation shaft, which is suitable for cooperating with the motor shaft and limiting the relative rotation of the anti-rotation shaft and the motor shaft; an anti-rotation handle, which is arranged on the anti-rotation shaft; a sleeve, which is relatively rotatably sleeved outside the anti-rotation shaft, and the sleeve is suitable for being sleeved outside the locking nut and rotating together with the locking nut; and a rotating wrench, which is arranged on the sleeve.
[0006] The motor shaft locking nut tightening tool according to the embodiment of the utility model has the advantages of easy operation, strong applicability, and easy portability.
[0007] In addition, the motor shaft locking nut tightening tool according to the above embodiment of the utility model may also have the following additional technical features:
[0008] According to an embodiment of the utility model, an escape groove is provided on the peripheral wall of the sleeve, and the anti-rotation handle extends out of the sleeve through the escape groove and is slidably fitted in the escape groove.
[0009] According to an embodiment of the utility model, the outer peripheral surface of the lower end of the anti-rotation shaft is provided with a spline, and the spline is suitable for cooperating with the motor shaft and limiting the relative rotation of the anti-rotation shaft and the motor shaft.
[0010] According to an embodiment of the utility model, a nut groove is provided at the lower end of the sleeve, and the locking nut is suitable for fitting in the nut groove and rotating together with the sleeve.
[0011] According to an embodiment of the present utility model, the anti-rotation shaft is detachably engaged in the sleeve.
[0012] According to an embodiment of the present utility model, the anti-rotation handle is detachably arranged on the anti-rotation shaft.
[0013] According to an embodiment of the utility model, a mounting hole is provided on the anti-rotation shaft, and the anti-rotation handle is detachably engaged in the mounting hole.
[0014] According to an embodiment of the utility model, the rotary wrench is detachably arranged on the sleeve.
[0015] According to an embodiment of the utility model, a wrench groove is provided at the upper end of the sleeve, and the wrench head of the rotating wrench can be detachably engaged in the wrench groove and restricts the relative rotation of the wrench head and the sleeve.
[0016] According to an embodiment of the present utility model, the rotating wrench is a fixed torque wrench.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a structural schematic diagram of a motor shaft locking nut tightening tool and a gearbox according to an embodiment of the utility model.
[0020] Figure 2 It is a partial structural schematic diagram of a motor shaft locking nut tightening tool and a gearbox according to an embodiment of the utility model.
[0021] Figure 3 It is a partial exploded view of a motor shaft locking nut tightening tool and a gearbox according to an embodiment of the utility model.
[0022] Figure 4 The utility model is a schematic structural diagram of a motor shaft locking nut tightening tool according to an embodiment of the utility model.
[0023] Figure 5This is an exploded view of a motor shaft locking nut tightening tool according to an embodiment of the utility model, with the following reference numerals: motor shaft locking nut tightening tool 1, anti-rotation shaft 10, spline 11, mounting hole 12, anti-rotation handle 20, sleeve 30, avoidance groove 31, nut groove 32, wrench groove 33, rotating wrench 40, wrench head 41, motor shaft 2, locking nut 3, bearing 4, retaining ring 5, gearbox housing 6. DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] The motor shaft locking nut tightening tool 1 according to an embodiment of the utility model is described below with reference to the accompanying drawings.
[0028] like Figure 1-Figure 5 As shown, the motor shaft locking nut tightening tool 1 according to the embodiment of the utility model includes an anti-rotation shaft 10 , an anti-rotation handle 20 , a sleeve 30 and a rotating wrench 40 .
[0029] The anti-rotation shaft 10 is suitable for cooperating with the motor shaft 2 and limiting the relative rotation between the anti-rotation shaft 10 and the motor shaft 2. The anti-rotation handle 20 is arranged on the anti-rotation shaft 10. The sleeve 30 is relatively rotatably sleeved outside the anti-rotation shaft 10, and the sleeve 30 is suitable for being sleeved outside the locking nut 3 and rotating together with the locking nut 3. The rotation wrench 40 is arranged on the sleeve 30.
[0030] Specifically, when locking the locking nut 3 of the gearbox, first install the bearing 4 into the gearbox housing 6, install the retaining ring 5 into the retaining ring groove of the gearbox housing 6 to fix the bearing 4, install the motor shaft 2 into the gearbox housing 6, pass through the bearing 4, the shaft shoulder fits with the end face of the bearing 4, and the locking nut 3 is pre-screwed on the motor shaft 2.
[0031] The anti-rotation shaft 10 of the motor shaft locking nut tightening tool 1 is matched with the motor shaft 2, and the sleeve 30 is sleeved on the outside of the locking nut 3. The motor shaft 2 is prevented from rotating by holding the anti-rotation handle 20, and the locking nut 3 is tightened to the required torque by turning the wrench 40.
[0032] According to the motor shaft locking nut tightening tool 1 of the utility model embodiment, by setting the anti-rotation shaft 10 and the sleeve 30, the anti-rotation shaft 10 can be used to cooperate with the motor shaft 2 to limit the rotation of the motor shaft 2, and the sleeve 30 can be used to cooperate with the locking nut 3 so that the sleeve 30 can drive the locking nut 3 to rotate together, thereby preventing the anti-rotation shaft 10 from rotating with the locking nut 3 during the rotation of the locking nut 3, which is convenient for tightening the locking nut 3.
[0033] Furthermore, by sleeve-arranging the sleeve 30 outside the anti-rotation shaft 10, it is not only convenient to apply force to the anti-rotation shaft 10 and the locking nut 3, and further convenient to tighten the locking nut 3, but also the space occupied by the motor shaft locking nut tightening tool 1 can be reduced. On the one hand, it can avoid interference with the gearbox housing and improve the applicability of the motor shaft locking nut tightening tool 1. On the other hand, it can be easy to carry and transport.
[0034] In addition, by providing an anti-rotation handle 20 and a rotating wrench 40, the rotation of the anti-rotation shaft 10 can be limited by holding the anti-rotation handle 20, and the rotation of the sleeve 30 can be achieved by rotating the rotating wrench 40, thereby increasing the force arm, facilitating the application of force to the locking nut 3 and the motor shaft 2, and further facilitating the operation of tightening the motor shaft locking nut 1.
[0035] Furthermore, compared with the special large-scale equipment used for tightening nuts of large quantities of gearboxes in the related art, the motor shaft locking nut tightening tool 1 is not only lower in cost, smaller in size, and easier to carry, but can also be used in scenarios such as testing and disassembly outside the workshop. It will not be interfered by different gearbox casings and can be used for different types of gearboxes, meeting the needs of disassembly and assembly of locking nuts for small batches of multi-variety gearboxes in the trial production stage.
[0036] Therefore, the motor shaft locking nut tightening tool 1 according to the embodiment of the utility model has the advantages of easy operation, strong applicability, and easy to carry.
[0037] The following describes a motor shaft locking nut tightening tool 1 according to a specific embodiment of the utility model with reference to the accompanying drawings.
[0038] In some specific embodiments of the present invention, Figure 1-Figure 5 As shown, the motor shaft locking nut tightening tool 1 according to the embodiment of the utility model includes an anti-rotation shaft 10 , an anti-rotation handle 20 , a sleeve 30 and a rotating wrench 40 .
[0039] Specifically, Figure 1-Figure 5 As shown, a clearance groove 31 is provided on the peripheral wall of the sleeve 30, and the anti-rotation handle 20 extends out of the sleeve 30 through the clearance groove 31 and is slidably fitted in the clearance groove 31. In this way, the anti-rotation handle 20 can be avoided by the clearance groove 31 when the sleeve 30 rotates relative to the anti-rotation shaft 10, thereby preventing the anti-rotation handle 20 from interfering with the relative rotation of the sleeve 30 and the anti-rotation shaft 10.
[0040] Specifically, if Figure 1 and Figure 2 As shown, there are two avoidance grooves 31 and they are spaced apart in the circumferential direction of the sleeve 30. Both ends of the anti-rotation handle 20 extend out of the sleeve 30. In this way, the two ends of the anti-rotation handle 20 can be held to prevent the anti-rotation shaft 10 from rotating, which further facilitates the operator to apply force.
[0041] Alternatively, if Figure 1-Figure 5 As shown, the outer peripheral surface of the lower end of the anti-rotation shaft 10 is provided with a spline 11 (the up and down directions are shown by the arrows in the figure and are only for the convenience of description, not for the actual setting direction), and the spline 11 is suitable for cooperating with the motor shaft 2 and limiting the relative rotation of the anti-rotation shaft 10 and the motor shaft 2. Specifically, the end of the motor shaft 2 is provided with an internal spline, and the internal spline cooperates with the spline 11 to limit the relative rotation of the two. In this way, the relative rotation of the anti-rotation shaft 10 and the motor shaft 2 can be limited by the spline 11, so that the motor shaft 2 can be prevented from rotating by preventing the anti-rotation shaft 10 from rotating.
[0042] More specifically, Figure 1 , Figure 2 and Figure 4 As shown, a nut groove 32 is provided at the lower end of the sleeve 30, and the locking nut 3 is adapted to fit in the nut groove 32 and rotate together with the sleeve 30. Specifically, the nut groove 32 is a hexagonal groove. In this way, the relative rotation of the locking nut 3 and the sleeve 30 can be limited by the cooperation between the nut groove 32 and the locking nut 3, so that the locking nut 3 can be driven to rotate together by the rotation of the sleeve 30, and the sleeve 30 only needs to be sleeved outside the locking nut 3, which is convenient and quick to operate.
[0043] In some embodiments, the anti-rotation shaft 10 can be detachably fitted in the sleeve 30. In this way, when the locking nut 3 needs to be tightened, the anti-rotation shaft 10 is first matched with the motor shaft 2, and then the sleeve 30 is sleeved outside the anti-rotation shaft 10 and the locking nut 3, so that the operator can confirm whether the anti-rotation shaft 10 and the motor shaft 2 are reliably matched.
[0044] Advantageously, the anti-rotation handle 20 is detachably mounted on the anti-rotation shaft 10. In this way, the anti-rotation handle 20 can be removed when not in use, which further reduces the space occupied by the motor shaft locking nut tightening tool 1 and further facilitates the carrying and transportation of the motor shaft locking nut tightening tool 1.
[0045] Furthermore, if Figure 5 As shown, the anti-rotation shaft 10 is provided with a mounting hole 12, and the anti-rotation handle 20 can be detachably fitted in the mounting hole 12. Specifically, the mounting hole 12 is a through hole, and both ends of the anti-rotation handle 20 extend from the mounting hole 12. This makes it easy to disassemble and assemble the anti-rotation handle 20, and it is easy to use the anti-rotation handle 20 to limit the rotation of the anti-rotation shaft 10.
[0046] In some embodiments, the rotating wrench 40 is detachably mounted on the sleeve 30. In this way, the rotating wrench 40 can be removed when not in use, which further facilitates reducing the space occupied by the motor shaft locking nut tightening tool 1 and further facilitates the carrying and transportation of the motor shaft locking nut tightening tool 1.
[0047] Specifically, Figure 5 As shown, a spanner groove 33 is provided at the upper end of the sleeve 30, and a spanner head 41 of the rotating spanner 40 can be detachably engaged in the spanner groove 33 and restrict the relative rotation of the spanner head 41 and the sleeve 30. Specifically, the spanner head 41 can be a square head, and the spanner groove 33 can be a square groove. This can facilitate the disassembly and assembly of the rotating spanner 40, and can prevent the spanner head 41 and the spanner groove 33 from rotating relative to each other, so that the sleeve 30 can be rotated by the rotating spanner 40.
[0048] Optionally, the rotating wrench 40 is a fixed torque wrench. In this way, the rotation torque can be set by the rotating wrench 40, for example, set to 145Nm, so as to ensure that the locking nut 3 is reliably locked in the case of preventing the locking nut 3 and the motor shaft 2 from being damaged by excessive torque.
[0049] Specifically, the motor shaft locking nut tightening tool 1 is a motor shaft locking nut tightening tool for a gearbox, so that the motor shaft locking nut tightening tool 1 can be suitable for tightening the nut of the motor shaft of the gearbox.
[0050] Reference below Figure 1-Figure 5 The operation process of the motor shaft locking nut tightening tool 1 according to some examples of the utility model is described.
[0051] First, install the bearing 4 into the gearbox housing 6, install the snap ring 5 into the snap ring groove of the gearbox housing 6 to fix the bearing 4, install the motor shaft 2 into the gearbox housing 6, pass through the bearing 4, the shaft shoulder fits with the end face of the bearing 4, and pre-tighten the locking nut 3 on the motor shaft 2.
[0052] Tighten the anti-rotation shaft 10 of the motor shaft locking nut 1 to match the motor shaft 2, so that the spline 11 is engaged with the internal spline of the motor shaft 2, the shoulder of the anti-rotation shaft 10 is in contact with the top surface of the motor shaft 2, the sleeve 30 is sleeved on the outside of the locking nut 3, the bottom surface of the sleeve 30 is in contact with the retaining frame of the bearing 4, the anti-rotation handle 20 passes through the avoidance groove 31 of the sleeve 30, and passes through the mounting hole 12 of the anti-rotation shaft 10, and the wrench head 41 of the rotating wrench 40 is inserted into the wrench groove 33 of the sleeve 30.
[0053] One operator holds the anti-rotation handle 20, and another operator tightens the locking nut 3 to the required torque, for example, 145 Nm, by rotating the torque wrench 40. When the torque wrench reaches the set value, a clicking sound is emitted.
[0054] Other structures and operations of the motor shaft locking nut tightening tool 1 according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. 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.
[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A motor shaft locking nut tightening tool, characterized in that: include: An anti-rotation shaft, the anti-rotation shaft being adapted to cooperate with the motor shaft and limiting the relative rotation between the anti-rotation shaft and the motor shaft; an anti-rotation handle, the anti-rotation handle being arranged on the anti-rotation shaft; A sleeve, the sleeve is relatively rotatably sleeved outside the anti-rotation shaft, the sleeve is suitable for being sleeved outside the locking nut and rotating together with the locking nut; A rotating wrench is arranged on the sleeve.
2. The motor shaft locking nut tightening tool according to claim 1, characterized in that: An escape groove is provided on the peripheral wall of the sleeve, and the anti-rotation handle extends out of the sleeve through the escape groove and is slidably fitted in the escape groove.
3. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The outer peripheral surface of the lower end of the anti-rotation shaft is provided with a spline, and the spline is suitable for cooperating with the motor shaft and limiting the relative rotation of the anti-rotation shaft and the motor shaft.
4. The motor shaft locking nut tightening tool according to claim 1, characterized in that: A nut groove is provided at the lower end of the sleeve, and the locking nut is suitable for fitting in the nut groove and rotating together with the sleeve.
5. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The anti-rotation shaft is detachably fitted in the sleeve.
6. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The anti-rotation handle is detachably arranged on the anti-rotation shaft.
7. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The anti-rotation shaft is provided with a mounting hole, and the anti-rotation handle is detachably fitted in the mounting hole.
8. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The rotating wrench is detachably arranged on the sleeve.
9. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The upper end of the sleeve is provided with a wrench groove, and the wrench head of the rotating wrench can be detachably engaged in the wrench groove and restricts the relative rotation of the wrench head and the sleeve.
10. The motor shaft locking nut tightening tool according to claim 1, characterized in that: The rotating wrench is a fixed torque wrench.