Improved coupling

Abstract

The utility model relates to the technical field of coupler equipment, and provides an improved coupler which comprises a first shaft and a first half coupler, the first shaft and the first half coupler are matched in an inserted mode through a flat key, the improved coupler further comprises a circular-truncated-cone-shaped fastening sleeve with a through hole, and threads are arranged on the inner wall of the through hole and the outer wall of a circular truncated cone of the fastening sleeve. The first half coupler comprises an outer sleeve and an inner sleeve which are concentrically arranged, a gap for containing the fastening sleeve exists between the outer sleeve and the inner sleeve and is in threaded fit with the outer sleeve and the inner sleeve, and a notch matched with the flat key is formed in the inner sleeve in the axial direction of the inner sleeve. The circular-truncated-cone-shaped design of the threaded cylinder can provide more uniform and stronger clamping force, it is ensured that the first connecting shaft body tightly holds the first shaft, the design of the threaded cylinder can better disperse stress and reduce stress concentration points, and therefore the fracture risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of coupling equipment technology, and specifically to an improved coupling. Background Technology

[0002] According to publication number CN222208685U, entitled "A Coupling", the opening and connecting lugs on the first coupling body play a key role in the installation and disassembly of the first shaft. However, this fixing method of the opening and connecting lugs may cause the opening to become a stress concentration point when the coupling is running at high speed, increasing the risk of breakage. Therefore, we propose an improved coupling. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the shortcomings of the prior art, this utility model provides an improved coupling that overcomes the deficiencies of the prior art, has a reasonable design and compact structure, and solves the problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An improved coupling includes a first shaft and a first half-coupling, which are connected by a key. The coupling also includes a frustum-shaped fastening sleeve with a through hole. The inner wall of the through hole and the outer wall of the frustum are threaded. The first half-coupling includes an outer sleeve and an inner sleeve arranged concentrically, with a gap between the outer sleeve and the inner sleeve to accommodate the fastening sleeve and a threaded fit. The inner sleeve has a notch along its axial direction to mate with the key.

[0008] Preferably, it also includes a second half coupling, which is fixed to the first half coupling by bolts. The second half coupling is axially inserted with a second shaft, and a pin is radially inserted into the second half coupling, which fixes the second shaft.

[0009] Preferably, the flat key has grooves on both sides along its axial direction, and the length of the grooves is the same as the length of the notch.

[0010] Preferably, the height of the flat key is greater than the depth of the groove of the first shaft, and the bottom wall of the groove is located within the outer arc of the first shaft.

[0011] Preferably, the fastening sleeve includes a frustum-shaped threaded sleeve, one end of which is connected to a shaft nut, and the inner and outer walls of the threaded sleeve are provided with threads.

[0012] Preferably, flanges are provided on both the second shaft and the first half coupling, and they are fixed with bolts.

[0013] (III) Beneficial Effects

[0014] The utility model embodiment provides a kind of improved coupling. With following beneficial effects:

[0015] 1, the design of thread barrel circular table can provide more uniform and stronger clamping force, ensure that the first shaft body is tightly held first shaft, the design of thread barrel can better disperse stress, reduce stress concentration point, to reduce the risk of fracture, since the clamping force provided by thread barrel is uniform and strong, can improve the stability and reliability of connection.

[0016] 2, by screwing thread barrel can conveniently adjust clamping force, ensure that the first shaft body is tightly connected with first shaft. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 it is the structural schematic diagram of the utility model;

[0018] Figure 2 it is the schematic diagram of the utility model explosion;

[0019] Figure 3 it is the schematic diagram of the first half coupling of the utility model;

[0020] Figure 4 it is the schematic diagram of the utility model fastening sleeve.

[0021] In the drawing: 1, first shaft;11, flat key;12, sink groove;2, second shaft;21, second half coupling;22, pin shaft;3, first half coupling;31, outer sleeve;32, inner sleeve;33, notch;34, shaft coupling insertion hole;4, fastening sleeve;41, screw sleeve;42, shaft head nut. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0023] Refer to the drawings Figures 1-4The utility model provides an improved coupling, including first shaft 1 and first half coupling 3, first shaft 1 and first half coupling 3 are inserted and are matched with the flat key 11, and the recess 33 is set up on the both sides of the flat key 11 along its axial direction, and the length of the recess 33 is consistent with the length of the recess 33, and the height of the flat key 11 is greater than the depth of the groove body of first shaft 1, and the bottom wall of the recess 33 is located in the outer arc of first shaft 1, still including the circular platform fastening sleeve 4 with through -hole, and the through -hole inner wall of fastening sleeve 4 is provided with the thread with the circular platform outer wall, and first half coupling 3 includes concentrically arranged outer sleeve 31 and inner sleeve 32, and there is the gap of accommodating fastening sleeve 4 between outer sleeve 31 and inner sleeve 32 and is screwed together, and the recess 33 is set up on the inner sleeve 32 along its axial direction and is matched with the flat key 11, and the shaft hole 34 is concentrically set up on first half coupling 3, and first shaft 1 is inserted in the shaft hole 34 and forms the cooperation;

[0024] When installing, the flat key 11 is inserted and matched with the shaft hole 34 on the first half coupling 3, and the flat key 11 corresponds to the recess 33, and the first shaft 1 corresponds to the shaft hole 34, and the fastening sleeve 4 is screwed in the gap between the outer sleeve 31 and the inner sleeve 32, since the fastening sleeve 4 is circular platform, the fastening sleeve 4 can slowly tighten the inner sleeve 32, realize the clamping of the first shaft 1, and the recess 33 is also set up on the flat key 11, and the recess 33 is clamped on both sides of the recess 12, so that the whole is fixed, and the design of the fastening sleeve 4 can better disperse stress, reduce stress concentration point, thereby reducing the risk of fracture.

[0025] In the embodiment, the second half coupling 21 is also included, and the second half coupling 21 is fixed by bolt adhesion with the first half coupling 3, the second shaft 2 is inserted axially in the second half coupling 21, the pin shaft 22 is also inserted radially in the second half coupling 21, and the pin shaft 22 fixes the second shaft 2, and the flange is arranged on the second shaft 2 and the first half coupling 3 and is fixed by bolt.

[0026] In the embodiment, the fastening sleeve 4 includes the circular platform screw sleeve 41, the one end of the screw sleeve 41 is connected with the shaft head nut 42, and the threads are arranged on the inner and outer walls of the screw sleeve 41.

[0027] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An improved coupling, comprising a first shaft (1) and a first half-coupling (3) which are insertedly fitted by a flat key (11); further comprising a circular cone-shaped fastening sleeve (4) with a through hole, the inner wall of the through hole of the fastening sleeve (4) is provided with a thread; the first half-coupling (3) comprises a concentrically arranged outer sleeve (31) and an inner sleeve (32), and there is a gap between the outer sleeve (31) and the inner sleeve (32) for accommodating the fastening sleeve (4) and the outer sleeve (31) and the inner sleeve (32) are threadedly fitted, and the inner sleeve (32) is provided with a notch (33) along the axial direction for cooperating with the flat key (11). characterized in that Further comprising a second half-coupling (21) which is fixedly attached to the first half-coupling (3) by bolts, the second half-coupling (21) is axially inserted with a second shaft (2), and the second half-coupling (21) is further radially inserted with a pin shaft (22) which fixes the second shaft (2). The flat key (11) is provided with a sunken groove (12) on both sides along the axial direction, and the length of the sunken groove (12) is consistent with the length of the notch (33).

2. An improved coupling as claimed in claim 1, wherein: The height of the flat key (11) is greater than the depth of the groove of the first shaft (1), and the bottom wall of the sunken groove (12) is located within the outer arc of the first shaft (1).

3. An improved coupling as claimed in claim 1, wherein: The fastening sleeve (4) comprises a circular cone-shaped screw sleeve (41), one end of the screw sleeve (41) is connected with a shaft head nut (42), and the inner and outer walls of the screw sleeve (41) are provided with threads.

4. An improved coupling as claimed in claim 3, wherein: The second shaft (2) and the first half-coupling (3) are both provided with flanges and are fixed by bolts.

5. An improved coupling as claimed in claim 1, wherein: ​ 6. An improved coupling as claimed in claim 2, wherein: ​

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