Locking tool for circular ring shaft assembly
By designing locking tools for ring shaft assembly, including shaft fixing and locking devices, the problem of rotating and deflecting the shaft during the lock nut tightening process is solved, and assembly quality and reliability are improved.
Patent Information
- Application Number
- CN202420670080.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-02
AI Technical Summary
Prior Art During the tightening process of lock nuts, the rotation shaft of the ring shaft assembly is prone to rotation and deflection, affecting assembly quality and reliability.
A locking tool for an annular shaft assembly is designed, including a shaft fixing device and a locking device. The shaft fixing device prevents the shaft from rotating circumferentially by radial prepression. The locking device adopts an anti-magnetic clamp and torque wrench interface to disperse the torque of the torque wrench to all directions of the lock nut.
It effectively prevents the circumferential rotation and deflection of the rotating shaft, improves the assembly quality and reliability of the ring shaft assembly, and ensures the uniform force and stable tightening of the lock nut.
Smart Images
Figure CN222570590U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical assembly, and more specifically to a locking tool for a circular shaft assembly. Background Art
[0002] The annular shaft assembly is assembled by sleeves of multiple annular structures on a rotating shaft, and axial positioning and locking are achieved through locking nuts at the ends.
[0003] At present, the method of tightening the locking nut is to use a torque wrench to clamp the locking nut and rotate it circumferentially until the tightening torque is reached. During the rotation of the locking nut, the rotating shaft of the ring shaft assembly may rotate, affecting the locking of the locking nut; at the same time, the rotating shaft is long, and the tightening torque will cause the rotating shaft to bend and deform, affecting the normal operation of the ring shaft assembly.
[0004] In summary, how to provide a locking tool that is easy to operate and has stable assembly quality is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a locking fixture for a circular ring shaft assembly, which has a simple structure and is easy to operate, thereby improving the stability and reliability of the assembly quality of the circular ring shaft assembly.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A locking tool for a ring shaft assembly, comprising:
[0008] A rotating shaft fixing device is used to radially preload the rotating shaft of the annular shaft assembly to prevent circumferential rotation;
[0009] The locking device comprises a torque wrench interface for connecting with a torque wrench and at least two anti-magnetic hoops, wherein two adjacent anti-magnetic hoops are detachably connected to form an annular hoop and sleeved outside a locking nut, and an outer peripheral surface of at least one anti-magnetic hoop is provided with a connecting frame for detachably connecting with the torque wrench interface;
[0010] When the annular clamp is sleeved outside the locking nut, the torque wrench is rotated, and the anti-magnetic clamp drives the locking nut to rotate around the rotating shaft.
[0011] Preferably, the antimagnetic clamp includes a clamp base and a clamp tile arranged in the clamp base, the outer periphery of the clamp tile is provided with a connecting screw, the clamp base is provided with a screw mounting hole for installing the connecting screw, and the connecting screw is connected to the tile fastening nut after passing through the screw mounting hole.
[0012] Preferably, the inner surface of the clamp shoe petal is provided with axial knurling or a pad with an anti-slip layer on the surface to increase the friction between the inner circumferential surface of the clamp shoe petal and the outer circumferential surface of the locking nut.
[0013] Preferably, both side edges of the clamp base are provided with pin mounting seats for mounting connecting pins.
[0014] Preferably, the antimagnetic clamps are evenly distributed along the circumferential direction of the rotating shaft.
[0015] Preferably, the connecting frame is arranged to protrude from the outer peripheral surface of the anti-magnetic clamp, and the torque wrench interface is snap-connected to the connecting frame via a connecting buckle.
[0016] Preferably, the rotating shaft fixing device comprises an upper pressing block and a lower pressing block which can be engaged with each other up and down, and at least one of the upper pressing block and the lower pressing block is connected to a hydraulic device so as to be lifted and lowered in a vertical direction under the drive of the hydraulic device.
[0017] When in use, first install the rotating shaft of the circular shaft assembly into the rotating shaft fixing device, and use the rotating shaft fixing device to radially pre-press the rotating shaft to prevent the rotating shaft from rotating when the locking nut is rotated; then, the anti-magnetic clamp is sleeved on the outside of the locking nut and connected to each other to form an annular clamp; then, the torque wrench interface and the connecting frame of the anti-magnetic clamp are connected, and the torque wrench and the torque wrench interface are connected; finally, the torque wrench is turned to make the anti-magnetic clamp drive the locking nut to rotate around the rotating shaft, and the locking nut is tightened with torque.
[0018] Therefore, the locking tool for the ring shaft assembly provided by the utility model has a simple structure and is easy to operate. The shaft fixing device can radially pre-press the shaft of the ring shaft assembly to prevent its circumferential rotation. The locking device can disperse the torque of the torque wrench to all directions of the locking nut, which is beneficial to reducing the flexural deformation of the shaft and better meeting the radial deflection level of the shaft under the specified span requirements, so that the assembly quality of the ring shaft assembly is relatively stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the working principle of the locking fixture for the ring shaft assembly provided by the utility model;
[0021] Figure 2is a schematic diagram of the structure of the locking device;
[0022] Figure 3 It is a schematic diagram of the structure of an anti-magnetic clamp with a connecting frame.
[0023] Figure 1-Figure 3 middle:
[0024] 10 is a circular shaft assembly, 20 is a torque wrench, 1 is a locking device, 11 is an antimagnetic clamp, 111 is a clamp base, 112 is a clamp tile, 113 is a tile fastening nut, 114 is a latch mounting seat, 12 is a connecting frame, 13 is a torque wrench interface, 14 is a connecting buckle, and 2 is a rotating shaft fixing device. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] The core of the utility model is to provide a locking tool for a circular ring shaft assembly, which has a simple structure and is easy to operate, thereby improving the stability and reliability of the assembly quality of the circular ring shaft assembly.
[0027] The utility model provides a locking tool for a circular shaft assembly, comprising:
[0028] The rotating shaft fixing device 2 is used to radially pre-press the rotating shaft of the annular shaft assembly 10 to prevent circumferential rotation;
[0029] The locking device 1 comprises a torque wrench interface 13 for connecting with the torque wrench 20 and at least two anti-magnetic hoops 11, wherein the two adjacent anti-magnetic hoops 11 are detachably connected to form an annular hoop and are sleeved outside the locking nut, and the outer peripheral surface of at least one anti-magnetic hoop 11 is provided with a connecting frame 12 for detachably connecting with the torque wrench interface 13;
[0030] When the annular clamp is sleeved outside the locking nut, the torque wrench 20 is turned, and the anti-magnetic clamp 11 drives the locking nut to rotate around the rotating shaft.
[0031] Please refer to Figure 1 The shaft fixing device 2 is provided with a shaft mounting hole for fixing the shaft of the annular shaft assembly 10, and a hydraulic device, a telescopic cylinder or other power mechanism can be used to apply pressure to the shaft to perform radial pre-compression to prevent the shaft from rotating when the locking nut is screwed.
[0032] The direction of the radial pre-pressure of the shaft fixing device 2 on the shaft can be set in the vertical direction, can be placed horizontally, or can be set in any diameter direction of the shaft; considering factors such as equipment cost and output power, the shaft fixing device 2 mostly uses a hydraulic device as a power mechanism.
[0033] Taking into account the structural reliability and the difficulty of processing and assembly, the shaft fixing device 2 is usually provided to include an upper pressing block and a lower pressing block which can be opened and closed up and down, and at least one of the upper pressing block and the lower pressing block is connected to a hydraulic device so as to be lifted and lowered in a vertical direction under the drive of the hydraulic device.
[0034] The locking device 1 is sleeved on the outside of the locking nut to be locked, and is used to connect the torque wrench 20 and the locking nut, and transmit the torque of the torque wrench 20 to the locking nut; considering that the surface of the annular shaft assembly 10 is magnetic, in order to prevent the magnetic field from affecting the locking of the locking nut, the annular clamp needs to be made of magnetic isolation material, such as soft magnetic isolation material such as copper.
[0035] The anti-magnetic clamp 11 can be formed into an annular clamp and sleeved outside the locking nut, so that the locking nut is subjected to relatively uniform force in all directions, which is beneficial to reducing the deflection and deformation of the rotating shaft; the two adjacent anti-magnetic clamps 11 are detachably connected, which is convenient for the anti-magnetic clamp 11 to be sleeved outside the locking nut, and it is convenient to adjust the installation angle of the anti-magnetic clamp 11 relative to the locking nut after completing the tightening in a certain circumferential direction.
[0036] Two adjacent anti-magnetic clamps 11 are connected by pin connection and bolt connection, which is easy to install and has strong connection stability.
[0037] In order to facilitate the connection between the torque wrench 20 and the locking device 1, the outer peripheral surface of at least one anti-magnetic clamp 11 is provided with a connecting frame 12 which is detachably connected to the torque wrench interface 13, and the connecting frame 12 and the torque wrench interface 13 can be connected by pin connection, bolt connection or clamping connection.
[0038] For example, see Figure 2 Both sides of the clamp base 111 of the anti-magnetic clamp 11 are provided with a plug mounting seat 114 for mounting a connecting plug, and two adjacent anti-magnetic clamps 11 can be connected in series by installing a connecting plug through the plug mounting seat 114.
[0039] The specific number of anti-magnetic clamps 11 is determined according to the size of the rotating shaft in actual production, and is usually set to three, four and five petals; it should be noted that considering that the locking effect of the two-petal design is poor, especially the locking effect for large-sized parts, the locking device 1 does not usually adopt a two-petal design.
[0040] The central angles of each anti-magnetic clamp 11 can be the same or different. Considering factors such as processing and locking effect, the anti-magnetic clamps 11 are evenly arranged along the circumferential direction of the rotating shaft, that is, the central angles of each anti-magnetic clamp 11 are the same.
[0041] When the locking nut needs to be tightened, first install the rotating shaft of the annular shaft assembly 10 into the rotating shaft fixing device 2, and use the rotating shaft fixing device 2 to radially pre-press the rotating shaft to prevent the rotating shaft from rotating when the locking nut is rotated; then the anti-magnetic clamp 11 is sleeved on the outside of the locking nut and connected to each other to form an annular clamp; then connect the torque wrench interface 13 and the connecting frame 12 of the anti-magnetic clamp 11, and connect the torque wrench 20 and the torque wrench interface 13; finally, turn the torque wrench 20, so that the anti-magnetic clamp 11 drives the locking nut to rotate around the rotating shaft, and the locking nut is tightened with torque.
[0042] It should be noted that in order to ensure the locking effect of the locking nut, after the tightening in a certain circumferential direction is completed, the installation angle of the annular clamp can be adjusted multiple times and the locking nut can be tightened with a step-by-step torque.
[0043] On the contrary, when the locking nut needs to be loosened, it is only necessary to adjust the assembly direction of the locking device 1 and the annular shaft assembly 10 and reversely loosen the locking nut.
[0044] In this embodiment, the locking tool has a simple structure and is easy to operate. The shaft fixing device 2 can radially pre-press the shaft of the annular shaft assembly 10 to prevent its circumferential rotation. The locking device 1 can disperse the torque of the torque wrench 20 to all directions of the locking nut, which is beneficial to reducing the flexural deformation of the shaft and better meeting the radial deflection level of the shaft under the specified span requirements, so that the assembly quality of the annular shaft assembly 10 is relatively stable and reliable.
[0045] On the basis of the above embodiments, in order to enhance the adaptability of the locking device 1 to rotating shafts of different diameters, an anti-magnetic clamp 11 can be provided, including a clamp base 111 and a clamp tile 112 arranged in the clamp base 111. The outer periphery of the clamp tile 112 is provided with a connecting screw, and the clamp base 111 is provided with a screw mounting hole for installing the connecting screw. The connecting screw passes through the screw mounting hole and is connected to the tile fastening nut 113.
[0046] Please refer to Figure 2 The hoop tile petals 112 are arranged on the inner circumference of the hoop base 111 through connecting screws. In order to ensure the technical indicators such as the wall thickness and coaxiality of the multi-petal hoop tile petals 112, the hoop tile petals 112 are usually cut and formed after integral processing;
[0047] In order to enhance the friction between the inner circumference of the clamping shoe petal 112 and the outer circumference of the locking nut, the inner surface of the clamping shoe petal 112 is provided with axial knurling or a liner with an anti-slip layer on the surface. The specific types and sizes of the axial knurling and the anti-slip layer are determined according to the actual production needs with reference to the existing ones;
[0048] The size of the clamp base 111 can be processed according to the size of the clamp petal 112. In order to make the clamp petal 112 fit tightly with the clamp base 111 and the locking nut, the clamp petal 112 is usually arranged symmetrically about the central axis of the clamp base 111.
[0049] In this embodiment, the anti-magnetic clamp 11 is divided into an outer clamp base 111 and an inner clamp tile 112. By replacing the clamp tiles 112 of different thicknesses, the anti-magnetic clamp 11 can meet the locking requirements of the circular shaft assemblies 10 of different diameters, and has strong applicability and versatility.
[0050] On the basis of the above embodiment, the connection structure of the connecting frame 12 and the torque wrench interface 13 is defined, the connecting frame 12 is protruded from the outer peripheral surface of the anti-magnetic clamp 11, and the torque wrench interface 13 is connected to the connecting frame 12 by a connecting buckle 14.
[0051] The connecting frame 12 can be configured as follows Figure 3 The radial ridge structure shown can also be set as an S-shaped or stepped ridge structure; in order to make the connecting frame 12 and the connecting buckle 14 fit tightly together, the connecting frame 12 is provided with a step that fits with the connecting buckle 14.
[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0053] The locking fixture for the ring shaft assembly provided by the utility model is introduced in detail above. The principle and implementation method of the utility model are explained in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A locking fixture for a ring shaft assembly, characterized in that: include: A rotating shaft fixing device (2) is used to radially pre-press the rotating shaft of the annular shaft assembly (10) to prevent circumferential rotation; A locking device (1), comprising a torque wrench interface (13) for connecting to a torque wrench (20) and at least two anti-magnetic hoops (11), wherein two adjacent anti-magnetic hoops (11) are detachably connected to form an annular hoop and are sleeved outside a locking nut, and an outer peripheral surface of at least one of the anti-magnetic hoops (11) is provided with a connecting frame (12) for detachably connecting to the torque wrench interface (13); When the annular clamp is sleeved outside the locking nut, the torque wrench (20) is rotated, and the anti-magnetic clamp (11) drives the locking nut to rotate around the rotating shaft.
2. The locking fixture for the annular shaft assembly according to claim 1, characterized in that: The antimagnetic clamp (11) comprises a clamp base (111) and a clamp tile (112) arranged in the clamp base (111); a connecting screw is provided on the outer periphery of the clamp tile (112); the clamp base (111) is provided with a screw mounting hole for mounting the connecting screw; the connecting screw passes through the screw mounting hole and is connected to the tile fastening nut (113).
3. The locking fixture for the annular shaft assembly according to claim 2, characterized in that: The inner surface of the clamp shoe (112) is provided with axial knurling or a liner with an anti-slip layer on the surface, so as to increase the friction between the inner circumference of the clamp shoe (112) and the outer circumference of the locking nut.
4. The locking fixture for the annular shaft assembly according to claim 2, characterized in that: Both sides of the clamp base (111) are provided with a plug mounting seat (114) for mounting a connecting plug.
5. The locking fixture for the ring shaft assembly according to any one of claims 1 to 4, characterized in that: The anti-magnetic clamps (11) are evenly distributed along the circumferential direction of the rotating shaft.
6. The locking fixture for the ring shaft assembly according to any one of claims 1 to 4, characterized in that: The connecting frame (12) is arranged to protrude from the outer peripheral surface of the anti-magnetic clamp (11), and the torque wrench interface (13) is snap-connected to the connecting frame (12) via a connecting buckle (14).
7. The locking device for the ring shaft assembly according to any one of claims 1 to 4, characterized in that: The rotating shaft fixing device (2) comprises an upper pressing block and a lower pressing block which can be matched up and down, and at least one of the upper pressing block and the lower pressing block is connected to a hydraulic device so as to be lifted and lowered in a vertical direction under the drive of the hydraulic device.