Anti-disengagement improved connecting shaft fastening assembly

Abstract

The utility model relates to the technical field of connecting shaft fastening, in particular to an anti-disengagement improved connecting shaft fastening assembly which comprises a connecting shaft body, a taper pin, a check ring and a fastener. A pin hole for the taper pin to be inserted is formed in the bottom wall of the mounting ring groove in the radial direction of the connecting shaft body in a penetrating mode, the inner circumferential wall of the check ring abuts against the end face of the taper pin, and the fastener is arranged on the check ring in a penetrating mode and locked to the connecting shaft body in a threaded mode. The connecting shaft body is provided with the mounting ring groove for positioning and clamping the retainer ring, the possibility that the retainer ring slides in the axial direction of the connecting shaft body is effectively reduced, the retainer ring and the connecting shaft body are fixed by additionally arranging the fastener, and the structural stability between the retainer ring and the connecting shaft body is improved; the possibility that the taper pin is separated from the pin hole due to the fact that the retainer ring is forced to be separated from the connecting shaft body due to enhanced vibration of the taper pin is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of connecting shaft fastening, and in particular to an improved anti-slipping connecting shaft fastening assembly. Background Art

[0002] In a high-power communication transmission system, a high-power switch is a high-power switching switch. By rising and falling the barrel, it switches itself on and off to a fixed contact, thereby connecting or disconnecting external equipment. The transmission device, lifting device and connecting shaft are key components of the switch device. The transmission device provides power for the switch; the lifting device converts the lateral input torque into a longitudinal torque to achieve the up and down movement of the switch; the connecting shaft connects the output end of the transmission device and the input end of the lifting device. The three are fastened with a conical pin and an open lock ring to achieve the transmission of torque between the two.

[0003] At present, in the use of the switch device, it is found that with the continuous increase in the frequency of use and service life of the switch device, the concentricity between the barrel and the lifting device will gradually deviate, resulting in increased vibration of the entire switch device, and the open locking ring cannot play a good locking role. The conical pin fixed between the connecting shaft and the lifting device and the transmission device will be at risk of disengagement due to long-term vibration and other factors, so further improvement is needed. Utility Model Content

[0004] In order to reduce the risk of a conical pin being dislodged due to increased vibration, the present application provides an improved anti-dislodged connecting shaft fastening assembly.

[0005] The present application provides an improved anti-slip connecting shaft fastening assembly adopts the following technical solution:

[0006] An improved anti-slip connection shaft fastening assembly comprises a connection shaft body, a conical pin, a retaining ring and a fastener, both ends of the connection shaft body are surrounded by mounting ring grooves, the bottom wall of the mounting ring groove is penetrated along the radial direction of the connection shaft body to form a pin hole for inserting the conical pin, the inner circumferential wall of the retaining ring abuts against the end face of the conical pin, and the fastener is passed through the retaining ring and threadedly locked to the connection shaft body.

[0007] By adopting the above technical solution, an installation ring groove is provided on the connecting shaft body for positioning and clamping the retaining ring, thereby effectively reducing the possibility of the retaining ring slipping along the axial direction of the connecting shaft body, and additional fasteners are provided to fix the retaining ring and the connecting shaft body, thereby improving the structural stability between the retaining ring and the connecting shaft body, and effectively reducing the possibility of the conical pin being forced to fall out of the connecting shaft body due to increased vibration, thereby causing the conical pin to fall out of the pin hole.

[0008] Preferably, a threaded hole is formed on the bottom wall of the mounting ring groove, and the fastener is a screw that penetrates the retaining ring and is threadedly connected to the threaded hole.

[0009] By adopting the above technical solution, after the retaining ring is clamped in the mounting ring groove, the screw thread is locked in the threaded hole to achieve the fixation of the retaining ring and the connecting shaft body.

[0010] Preferably, the fasteners are provided in plurality, and the plurality of fasteners are distributed around the axis of the connecting shaft body.

[0011] By adopting the above technical solution, different positions of the retaining ring are locked by using multiple fasteners, thereby further improving the fixing effect of the retaining ring.

[0012] Preferably, the inner side wall of the mounting ring groove is inclined so that the notch of the mounting ring groove is expanded.

[0013] By adopting the above technical solution, the notch of the mounting ring groove is expanded, which, on the one hand, facilitates the retaining ring to be clamped into the mounting ring groove, and on the other hand, increases the contact area between the end face of the retaining ring and the inner side wall of the mounting ring groove.

[0014] Preferably, the retaining ring is an open retaining ring.

[0015] By adopting the above technical solution, the retaining ring is an open retaining ring. By applying a force to the opening of the open retaining ring, the opening of the open retaining ring is stretched open, causing the open retaining ring to undergo elastic deformation to increase the inner diameter of the open retaining ring, thereby sliding the connecting shaft body into the inner diameter of the open retaining ring. When the mounting ring groove on the connecting shaft body corresponds to the position of the open retaining ring, the open retaining ring is reset and thus clamped in the mounting ring groove.

[0016] Preferably, both inner side walls of the opening of the opening retaining ring protrude outwards and are fixed with force application plates.

[0017] By adopting the above technical solution, a force plate is protruding from the opening of the open retaining ring. When the open retaining ring is installed on the connecting shaft body, it is convenient for the staff to apply force to the force plate to open the opening of the open retaining ring, thereby improving the installation convenience of the open retaining ring.

[0018] Preferably, the retaining ring includes a first clamping plate and a second clamping plate, both of which are semicircular plates, one end of the first clamping plate and the second clamping plate are hinged, and the free ends of the first clamping plate and the second clamping plate are fixedly connected with mounting ear plates, and the two mounting ear plates are locked by bolts and nuts, and the fastener is passed through the first clamping plate / the second clamping plate.

[0019] By adopting the above technical solution, when installing the retaining ring in the mounting ring groove, first open the first clamping plate and the second clamping plate, first clamp the first clamping plate in the mounting ring groove, then turn to close the second clamping plate, so that the second clamping plate is clamped in the mounting ring groove, and finally lock and fix the two mounting ear plates by bolts and nuts, so that the first clamping plate and the second clamping plate are clamped in the mounting ring groove, and finally, the fastener is passed through the first clamping plate / the second clamping plate and locked to the connecting shaft body to achieve complete fixation of the retaining ring.

[0020] Preferably, a positioning column is protruding and fixed on the bottom wall of the mounting ring groove, the axial direction of the positioning column is parallel to the radial direction of the connecting shaft body, and the first clamping plate / the second clamping plate is provided with a positioning hole for inserting the positioning column.

[0021] By adopting the above technical solution, positioning pins and positioning holes are additionally provided to realize the positioning installation of the retaining ring and the connecting shaft body. When the positioning pins are inserted into the positioning holes, the fasteners are directly locked without the need for retaining rings to perform hole alignment operations.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The connecting shaft body is provided with an installation ring groove for positioning the retaining ring, which effectively reduces the possibility of the retaining ring slipping along the axial direction of the connecting shaft body. Fasteners are added to fix the retaining ring and the connecting shaft body, improve the structural stability between the retaining ring and the connecting shaft body, and effectively reduce the possibility that the conical pin is forced to fall out of the connecting shaft body due to increased vibration, thereby causing the conical pin to fall out of the pin hole;

[0024] 2. Use multiple fasteners to lock different positions of the retaining ring to further improve the fixing effect of the retaining ring;

[0025] 3. Additional positioning pins and positioning holes are provided to realize the positioning installation of the retaining ring and the connecting shaft body. When the positioning pins are inserted into the positioning holes, the fasteners are directly locked without the need for retaining rings to operate the holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an improved anti-slipping connecting shaft fastening assembly in Example 1;

[0027] Figure 2 is a schematic structural diagram of the connecting shaft body in Example 1;

[0028] Figure 3 is a schematic diagram of the structure of the installation ring groove in Example 2;

[0029] Figure 4 is a schematic structural diagram of the retaining ring in Example 2;

[0030] Figure 5It is a schematic diagram of the connection structure between the retaining ring and the connecting shaft body in Example 3.

[0031] In the figure, 1, connecting shaft body; 11, mounting ring groove; 12, pin hole; 13, threaded hole; 14, positioning column; 2, tapered pin; 3, retaining ring; 31, through hole; 32, force plate; 33, first clamping plate; 34, second clamping plate; 35, mounting ear plate; 36, positioning hole; 4, fastener. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] Embodiment 1:

[0034] The present application discloses an improved anti-slip connecting shaft fastening assembly, referring to Figure 1 , Figure 2 , including a connecting shaft body 1, a conical pin 2, a retaining ring 3 and a fastener 4. Both ends of the connecting shaft body 1 are coaxially provided with mounting ring grooves 11. The bottom inner wall of the mounting ring groove 11 is provided with a pin hole 12 for inserting the conical pin 2 along the radial direction of the connecting shaft body 1. In this embodiment, a conical pin 2 is passed through both ends of the connecting shaft body 1.

[0035] The retaining ring 3 is clamped in the mounting ring groove 11, the inner circumferential wall of the retaining ring 3 abuts against the inner wall of the mounting ring groove 11, the inner circumferential wall of the retaining ring 3 abuts against the end face of the conical pin 2, and the outer circumferential wall of the retaining ring 3 is flush with the outer circumferential wall of the connecting shaft body 1. In this embodiment, the retaining ring 3 is an open retaining ring, which is made of aluminum alloy and is subjected to black chemical oxidation treatment, so that the open retaining ring has certain rigidity and elasticity.

[0036] In the process of sleeve-mounting the open retaining ring on the connecting shaft body 1, a force is first applied to the opening of the open retaining ring so that the opening of the open retaining ring is stretched and elastically deformed to increase the inner diameter of the open retaining ring, thereby sliding the connecting shaft body 1 into the inner hole of the open retaining ring. When the mounting ring groove 11 on the connecting shaft body 1 corresponds to the position of the open retaining ring, the open retaining ring is elastically reset and thus clamped in the mounting ring groove 11.

[0037] The inner wall of the bottom of the mounting ring groove 11 is provided with a threaded hole 13 along the radial direction of the connecting shaft, and a plurality of threaded holes 13 are provided and are spaced apart around the axis of the connecting shaft. In this embodiment, four threaded holes 13 are provided. The outer peripheral wall of the retaining ring 3 is provided with a through hole 31 connected to the threaded hole 13 along the radial direction, and four fasteners 4 are provided correspondingly. Specifically, the fastener 4 is a screw that is provided through the through hole 31 and is threadedly connected to the threaded hole 13.

[0038] The implementation principle of an improved anti-slipping connecting shaft fastening assembly in an embodiment of the present application is as follows: an installation ring groove 11 is provided on the connecting shaft body 1 for positioning and clamping the retaining ring 3, thereby effectively reducing the possibility of the retaining ring 3 slipping along the axial direction of the connecting shaft body 1, and an additional fastener 4 is provided to achieve the fixation of the retaining ring 3 and the connecting shaft body 1, thereby improving the structural stability between the retaining ring 3 and the connecting shaft body 1, and effectively reducing the possibility of the retaining ring 3 being forced to slip out of the connecting shaft body 1 due to the enhanced vibration of the conical pin 2, thereby causing the conical pin 2 to slip out of the pin hole 12, thereby improving the reliability of the entire switching device. During the maintenance and replacement of a large number of switching devices with a long service life, without dismantling a large number of parts, only replacing the improved anti-slipping connecting shaft fastening assembly can eliminate the above-mentioned risks and smoothly carry out maintenance work, thereby improving the maintenance response capability, improving the maintenance efficiency, reducing the labor design cost, and reducing the maintenance material cost.

[0039] Embodiment 2:

[0040] The difference from Example 1 is that, referring to Figure 3 The inner side wall of the mounting groove 11 is inclined, so that the notch of the mounting groove 11 is expanded. The notch of the mounting groove 11 is expanded, which, on the one hand, facilitates the retaining ring 3 to be inserted into the mounting groove 11, and on the other hand, increases the contact area between the outer end wall of the retaining ring 3 and the inner side wall of the mounting groove 11.

[0041] Reference Figure 4 The two inner side walls of the opening of the open retaining ring 3 are both protruding outward and fixed with a force plate 32. When the open retaining ring 3 is installed on the connecting shaft body 1, it is convenient for the staff to apply a force to the force plate 32 to open the opening of the open retaining ring 3, thereby improving the installation convenience of the open retaining ring 3.

[0042] Embodiment 3:

[0043] The difference from Example 1 is that, referring to Figure 5 The retaining ring 3 includes a first clamping plate 33 and a second clamping plate 34, both of which are semicircular plates. One end of the first clamping plate 33 and the second clamping plate 34 are hinged, and the free ends of the first clamping plate 33 and the second clamping plate 34 are fixedly connected with mounting ear plates 35. The two mounting ear plates 35 are locked by bolts and nuts, and the through holes 31 are opened in the first clamping plate 33 and the second clamping plate 34.

[0044] A positioning pin 14 is protruding and fixed on the bottom wall of the mounting ring groove 11, and the axial direction of the positioning pin 14 is parallel to the radial direction of the connecting shaft body 1. In the present embodiment, the positioning pin 14 and the connecting shaft body 1 are welded, and the first clamping plate 33 or the second clamping plate 34 is provided with a positioning hole 36 for inserting the positioning pin 14. In the present embodiment, the positioning hole 36 is provided on the first clamping plate 33.

[0045] When installing the retaining ring 3 in the mounting groove 11, first open the first clamping plate 33 and the second clamping plate 34, and first clamp the first clamping plate 33 in the mounting groove 11, and insert the positioning pin in the positioning hole 36 on the first clamping plate 33, and then turn to close the second clamping plate 34, so that the second clamping plate 34 is clamped in the mounting groove 11, and the two mounting ear plates 35 are locked and fixed by bolts and nuts. At this time, the through holes 31 and the threaded holes 13 on the first clamping plate 33 and the second clamping plate 34 correspond to each other, and the screws are directly locked without rotating and adjusting the retaining ring 3, thereby improving the installation convenience of the retaining ring 3.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An improved anti-slip connecting shaft fastening assembly, characterized in that: The invention comprises a connecting shaft body (1), a conical pin (2), a retaining ring (3) and a fastener (4); both ends of the connecting shaft body (1) are surrounded by mounting ring grooves (11); a pin hole (12) for inserting the conical pin (2) is formed through the bottom wall of the mounting ring groove (11) in the radial direction of the connecting shaft body (1); the inner peripheral wall of the retaining ring (3) abuts against the end surface of the conical pin (2); and the fastener (4) is penetrated by the retaining ring (3) and is threadedly locked to the connecting shaft body (1).

2. The improved anti-slipping connecting shaft fastening assembly according to claim 1, characterized in that: A threaded hole (13) is formed on the bottom wall of the mounting ring groove (11), and the fastener (4) is a screw that penetrates the retaining ring (3) and is threadably connected to the threaded hole (13).

3. The improved anti-slipping connecting shaft fastening assembly according to claim 1, characterized in that: A plurality of the fasteners (4) are provided, and the plurality of fasteners (4) are distributed around the axis of the connecting shaft body (1).

4. The improved anti-slipping connecting shaft fastening assembly according to claim 1, characterized in that: The inner side wall of the mounting ring groove (11) is arranged in an inclined manner, so that the notch of the mounting ring groove (11) is arranged in an expanded manner.

5. The improved anti-slipping connecting shaft fastening assembly according to claim 1, characterized in that: The retaining ring (3) is an open retaining ring.

6. The improved anti-slipping connecting shaft fastening assembly according to claim 5, characterized in that: Both inner side walls of the opening of the opening retaining ring protrude outwards and are fixed with force application plates (32).

7. The improved anti-slipping connecting shaft fastening assembly according to claim 1, characterized in that: The retaining ring (3) comprises a first clamping plate (33) and a second clamping plate (34), both of which are semicircular plates, one end of the first clamping plate (33) and the second clamping plate (34) are hinged, and the free ends of the first clamping plate (33) and the second clamping plate (34) are fixedly connected with mounting ear plates (35), and the two mounting ear plates (35) are locked by bolts and nuts, and the fastener (4) is penetrated by the first clamping plate (33) / the second clamping plate (34).

8. The improved anti-slipping connecting shaft fastening assembly according to claim 7, characterized in that: A positioning column (14) is protruding and fixed on the bottom wall of the mounting ring groove (11), the axial direction of the positioning column (14) is parallel to the radial direction of the connecting shaft body (1), and the first clamping plate (33) / the second clamping plate (34) is provided with a positioning hole (36) for inserting the positioning column (14).

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