Half-split type rigid coupling

Abstract

The utility model discloses a half-split type rigid coupling, which belongs to the technical field of couplings, and comprises a half-split type first coupling and a half-split type second coupling, a first shaft and a second shaft are inserted from two ends of the first coupling and the second coupling, the first coupling and the second coupling are detachably arranged, and the first shaft and the second shaft are clamped and fixed; concave limiting grooves are formed in the first coupling and the second coupling, clamping pieces are detachably arranged in the limiting grooves, and clamping grooves which can be matched with the first connecting end on the first shaft and the second connecting end on the second shaft are formed in the clamping pieces. The coupler is used for solving the problems that the coupler is easy to block and inconvenient to disassemble during operation and maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, in particular to a half-type rigid coupling. Background Art

[0002] The vertical long-shaft pump is a commonly used equipment component. It is mainly used in deep well water extraction, river raw water extraction, large power plant circulating water, steel plant vortex wells, rainwater drainage and other markets. In order to save space in the factory pump room, a layered pump room is often used. In addition, considering the long length of the pump, the shaft with a shaft length-to-diameter ratio of more than 40 usually adopts a segmented shaft. In order to improve the shaft alignment and rigidity, the segmented shaft is usually connected with a sleeve-type integral structure. When the vertical long-shaft pump adopts a sleeve coupling, due to the long operation time of the pump, the position offset between the coupling and the shaft or rust in the coupling, etc., it is easy to get stuck and cannot be disassembled during the later operation and maintenance, and disassembly is very difficult, so the sleeve coupling needs to be destroyed, which brings inconvenience to the user's operation and maintenance. Utility Model Content

[0003] In view of the above problems, the utility model provides a half-type rigid coupling, which is used to solve the problem that the coupling is easy to get stuck and is inconvenient to disassemble during operation and maintenance.

[0004] To achieve the above object, the technical solution adopted by the utility model is: a half-type rigid coupling, including a first coupling and a second coupling of half type, a first shaft and a second shaft are inserted from both ends of the first coupling and the second coupling, the first coupling and the second coupling are detachably arranged and clamped and fixed with the first shaft and the second shaft;

[0005] The first coupling and the second coupling are provided with concave limiting grooves, and a clamping piece is detachably provided in the limiting groove. The clamping piece is provided with a clamping groove that can cooperate with the first connecting end on the first shaft and the second connecting end on the second shaft.

[0006] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting a first half coupling and a second half coupling, the coupling can be easily disassembled during operation and maintenance replacement, which is more convenient when used and improves the efficiency of replacement. The provided clamping part can play a clamping and limiting role on the second connecting end and the first connecting end, and under the limiting effect of the limit groove, the second shaft and the first shaft can have better stability in the axial direction relative to the first coupling and the second coupling, thereby avoiding the phenomenon of the coupling being stuck due to deflection caused by structural instability.

[0007] As a further improvement of the above scheme, a keyway is provided on the inner wall of the first coupling or the second coupling, and a plurality of second mounting holes are provided on the side wall of the first coupling or the second coupling. A limit member for limiting the movement of the key installed in the keyway is detachably provided in the second mounting hole.

[0008] The technical effect of the above improvement is: through the second mounting hole, the key installed in the key slot can be fastened and limited after the limiting member is installed, thereby ensuring its stable transmission efficiency.

[0009] As a further improvement of the above solution, a plurality of first mounting holes are provided on the outer side walls of the first coupling and the second coupling, and fasteners for fixing the first coupling and the second coupling are detachably provided in the first mounting holes.

[0010] The technical effect of the above improvement is: after the fastener is installed in the first mounting hole, the first coupling and the second coupling are fixed, thereby completing the fastening installation between the coupling and the shaft.

[0011] As a further improvement of the above solution, the inner side wall of the first coupling or the second coupling is provided with mounting grooves close to both ends, and a first sealing member in contact with the first shaft and the second shaft is detachably provided in the mounting groove.

[0012] The technical effect of the above improvement is: the first seal is mainly used to isolate water from both ends of the first coupling and the second coupling, avoiding rust in the first coupling, the second coupling and between the first shaft and the second shaft, thereby reducing the phenomenon of sticking.

[0013] As a further improvement of the above solution, a second sealing member is detachably provided in the limiting groove, and the second sealing member is located between the interval between the first shaft and the clamping member and between the interval between the second shaft and the clamping member, and are in close contact with each other.

[0014] As a further improvement of the above solution, the second sealing member is "C"-shaped, and a docking platform and a docking groove for mutual coupling are provided on the docking surface of the second sealing member.

[0015] The technical effect of the above improvement is: by setting the second sealing member, it can play a role of sealing and water isolation. At the same time, it can also facilitate the mutual installation between the snap-in member and the limit groove, reduce the processing precision, and set the second sealing member into a C shape, which is more convenient during installation. Moreover, the two second sealing members can be stably docked and installed in the docking platform and docking groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model during installation;

[0017] Figure 2 It is a schematic diagram of the structure of the inner wall of the first coupling or the second coupling;

[0018] Figure 3 It is a schematic diagram of the appearance of the utility model;

[0019] Figure 4 for Figure 3 Structural diagram of the middle A direction;

[0020] Figure 5 This is a schematic structural diagram of a second embodiment of the utility model;

[0021] Figure 6 This is a schematic structural diagram of a third embodiment of the utility model;

[0022] Figure 7 It is a schematic diagram of the structure of the second sealing member.

[0023] In the figure: 10, first coupling; 11, second coupling; 12, limit groove; 13, clamping piece; 131, clamping groove; 14, key groove; 15, first mounting hole; 16, second mounting hole; 17, mounting groove; 18, first sealing member; 19, second sealing member; 191, docking platform; 192, docking groove; 30, first shaft; 301, first connecting end; 40, second shaft; 401, second connecting end. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution, the utility model is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0025] Embodiment 1:

[0026] like Figure 1-4 As shown in the figure, it is the embodiment 1 of the utility model. The specific scheme of this embodiment is: a half-type rigid coupling, including a first half-type coupling 10 and a second half-type coupling 11. Specifically, the first half-type coupling 10 and the second half-type coupling 11 are semi-cylindrical structures. Figure 3As shown, the first shaft 30 and the second shaft 40 are inserted from both ends of the first coupling 10 and the second coupling 11, and the first coupling 10 and the second coupling 11 are detachably arranged between them and clamped and fixed with the first shaft 30 and the second shaft 40. Specifically, a plurality of first mounting holes 15 are arranged on the outer side walls of the first coupling 10 and the second coupling 11, and the first mounting holes 15 are detachably arranged with fasteners for fixing the first coupling 10 and the second coupling 11. The fasteners used in this embodiment are fastening bolts or fastening screws. By setting the first coupling 10 and the second coupling 11, the first shaft 30 and the second shaft 40 can be sleeved together, which is more convenient when installing or disassembling. They are fixed by fastening bolts or fastening screws, so when replacing and repairing, quick disassembly and assembly can be achieved, reducing the phenomenon of jamming.

[0027] The first coupling 10 and the second coupling 11 are provided with a concave limiting groove 12, and a clamping member 13 is detachably provided in the limiting groove 12. The clamping member 13 is specifically a half-cylindrical structure, and a clamping groove 131 is provided on the clamping member 13, which can cooperate with the first connecting end 301 on the first shaft 30 and the second connecting end 401 on the second shaft 40. The clamping groove 131 is a through groove with a wide middle and small sides provided in the clamping member 13. Please refer to the attached Figure 1 As shown, the first connecting end 301 and the second connecting end 401 are a section extending from the end of the first shaft 30 and the second shaft 40, and are in a "T"-shaped cylindrical shape. When the first connecting end 301 and the second shaft 40 are inserted into the snap-in groove 131, they can fit with the snap-in groove 131, and then after the snap-in member 13 is installed on the limiting groove 12, the first shaft 30 and the second shaft 40 will not slide axially relative to the first coupling 10 and the second coupling 11, so as to fix the first coupling 10, the second coupling 11 and the first shaft 30, the second shaft 40, thereby providing a stable working environment.

[0028] like Figure 2 , 3 As shown in Figure 4, as a preferred embodiment of the above-mentioned embodiment, a keyway 14 is provided on the inner wall of the first coupling 10 or the second coupling 11. The keyway 14 is mainly for facilitating the installation of the key. In this embodiment, the key adopts a C-type key to minimize the imbalance caused by the keyway. A plurality of second mounting holes 16 are provided on the side wall of the first coupling 10 or the second coupling 11. A limit member for limiting the movement of the key installed in the keyway 14 is detachably provided in the second mounting hole 16. In this embodiment, the limit member is a limit bolt that is threadedly connected to the second mounting hole 16, and the key is pressed after the limit bolt is tightened to prevent the key from moving in the keyway 14 or the keyway on the first shaft 30 or the second shaft 40, thereby providing a better transmission effect.

[0029] Embodiment 2:

[0030] like Figure 5 As shown, as Example 2 of the utility model, its main structure is the same as Example 1, except that, the inner wall of the first coupling 10 or the second coupling 11 is provided with mounting grooves 17 close to both ends, and the mounting groove 17 is detachably provided with a first seal 18 which can be installed in contact with the first shaft 30 and the second shaft 40. The first seal 18 can be an O-ring, which can be firstly put on the first shaft 30 or the second shaft 40 during installation, or cut off on the O-ring and then installed on the first shaft 30 or the second shaft 40. The purpose of setting the O-ring is to seal the interior of the first coupling 10 and the second coupling 11 to prevent water from entering and rusting the internal structure of the first coupling 10 and the second coupling 11, thereby reducing the phenomenon of coupling jamming.

[0031] Embodiment 3:

[0032] like Figure 6 , 7 As shown in the figure, as the embodiment 3 of the utility model, its main structure is the same as that of the embodiment 1, except that a second sealing member 19 is detachably provided in the limiting groove 12, and the second sealing member 19 is located between the interval between the first shaft 30 and the clamping member 13 and between the interval between the second shaft 40 and the clamping member 13, and is in close contact with each other. Specifically, two second sealing members 19 are provided, which are in contact with the ends of the first shaft 30 and the second shaft 40 and the two ends of the clamping member 13, respectively. Figure 6 As shown, the structure of the second seal 19 is "C"-shaped, and two of them are assembled together and installed in the limit groove 12, and a docking platform 191 and a docking groove 192 are provided on the docking surface of the second seal 19 for easy coupling. The docking platform 191 and the docking groove 192 can be buckled together after the second seal 19 is assembled, so as to improve the docking stability of the second seal 19. The second seal 19 can play a partial sealing role to prevent water vapor from entering the limit groove 12, reduce the corrosion between the limit groove 12, the clamping member 13 and the first coupling 10, the second coupling 11, the first shaft 30 and the second shaft 40, and the second seal 19 can fill the gap between the limit groove 12 and the clamping member 13, reduce the processing accuracy of the limit groove 12 or the clamping member 13, reduce the cost, and facilitate installation.

[0033] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. The above are only preferred implementations of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A half-type rigid coupling, characterized in that: It comprises a first coupling (10) and a second coupling (11) in half, wherein a first shaft (30) and a second shaft (40) are inserted from both ends of the first coupling (10) and the second coupling (11), and the first coupling (10) and the second coupling (11) are detachably arranged and are clamped and fixed to the first shaft (30) and the second shaft (40); The first coupling (10) and the second coupling (11) are provided with inwardly concave limiting grooves (12), a clamping member (13) is detachably provided in the limiting grooves (12), and the clamping member (13) is provided with a clamping groove (131) which can cooperate with a first connecting end (301) on the first shaft (30) and a second connecting end (401) on the second shaft (40); A keyway (14) is provided on the inner side wall of the first coupling (10) or the second coupling (11), a plurality of second mounting holes (16) are provided on the side wall of the first coupling (10) or the second coupling (11), and a limiting member for limiting the movement of a key installed in the keyway (14) is detachably provided in the second mounting hole (16).

2. A half-type rigid coupling according to claim 1, characterized in that: A plurality of first mounting holes (15) are provided on the outer side walls of the first coupling (10) and the second coupling (11), and fasteners for fixing the first coupling (10) and the second coupling (11) are detachably provided in the first mounting holes (15).

3. A half-type rigid coupling according to claim 1, characterized in that: The inner side wall of the first coupling (10) or the second coupling (11) is provided with mounting grooves (17) near both ends, and a first sealing member (18) in contact with the first shaft (30) and the second shaft (40) is detachably provided in the mounting groove (17).

4. A half-type rigid coupling according to claim 1, characterized in that: A second sealing member (19) is detachably disposed in the limiting groove (12); the second sealing member (19) is located between the interval between the first shaft (30) and the clamping member (13) and between the interval between the second shaft (40) and the clamping member (13), and is in close contact with each other.

5. A half-type rigid coupling according to claim 4, characterized in that: The second sealing member (19) is in a "C" shape, and a docking platform (191) and a docking groove (192) are provided on a docking surface of the second sealing member (19) for facilitating mutual coupling.

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