Coupling convenient to maintain

Abstract

The coupler convenient to maintain comprises a first connecting body and a second connecting body, the first connecting body and the second connecting body are each of a hollow annular structure, the outer diameter of the second connecting body is larger than that of the first connecting body, and the first connecting body is coaxially fixed to one side of the second connecting body; a key groove is formed in the inner wall of the first connecting body, a weight removing groove is formed in the outer edge face of the first connecting body, a penetrating groove is formed in the thickness direction of the first connecting body and the second connecting body in a penetrating mode, and locking holes used for locking the two sides of the penetrating groove are formed in the first connecting body and face the penetrating groove. By means of the through groove formed in the first connecting body and the locking hole formed in the first connecting body in a matched mode, the coupling has the locking and loosening functions, and the coupling can be disassembled and assembled directly through the bolt located in the locking hole; and the de-weighting groove formed in the outer edge surface of the first connecting body in advance can avoid the balancing process, so that the production time efficiency can be greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a coupling that is easy to maintain. Background Technology

[0002] During the operation of a water pump, a coupling is needed as a connecting component to transmit torque. The coupling can reliably connect the water pump shaft and the drive shaft, enabling the drive to safely and smoothly drive the water pump to rotate and work together.

[0003] Conventional couplings require balancing on a balancing machine along with all mounting components (such as shafts and keys) before installation. Only after the weight is removed and the coupling passes the weight test can it be safely installed. The coupling also needs to be heated to a certain temperature before being fitted onto the shaft to ensure a secure installation. This method is not only time-consuming and complex, but it is also difficult to remove the coupling from the shaft when replacement is needed. Even if it can be removed, the shaft will be damaged, resulting in extremely high replacement and maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a coupling that is easy to maintain. The coupling replacement process is simple and quick, and there is no need to balance it in advance before each replacement, thus improving the replacement efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a coupling that is easy to maintain, comprising a first connecting body and a second connecting body, both the first connecting body and the second connecting body being hollow annular structures, and the outer diameter of the second connecting body being larger than the outer diameter of the first connecting body, the first connecting body being coaxially fixed to one side of the second connecting body, and a keyway being formed on the inner wall of the first connecting body.

[0006] A de-weighting groove is provided along the outer edge of the first connector, and a through groove is provided through the thickness direction of the first connector and the second connector. A locking hole for locking both sides of the through groove is provided on the first connector facing the through groove.

[0007] Furthermore, there are multiple locking holes, which are equally spaced along the length of the first connecting body.

[0008] Furthermore, a locking groove is provided along the length direction of the first connector, the locking groove being located on one side of the through groove and corresponding to the positions of the plurality of locking holes.

[0009] Furthermore, the centerline of the deduplication groove is deflected by 4.5°-5.5° based on the centerline of the keyway.

[0010] Furthermore, the length of the de-duplication groove is less than the length of the first connecting body.

[0011] Furthermore, the width of the de-weighting groove is 12-16mm and the depth is 5.5-6.5mm.

[0012] Furthermore, a plurality of fixing holes are provided along the thickness direction of the second connector for fixing the second connector to the drive shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model include: the through groove and locking hole provided on the first connecting body enable the coupling to have locking and loosening functions, and the coupling can be disassembled and installed directly through the bolt located in the locking hole; the weight-reducing groove pre-opened on the outer edge surface of the first connecting body can avoid the balancing process and greatly shorten the production time. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The schematic diagram shows a cross-sectional view of a coupling that is easy to maintain;

[0016] Figure 2 The schematic diagram illustrates the axial structure of the coupling, which is easy to maintain.

[0017] The numbers in the diagram are: 1-first connector, 2-second connector, 3-keyway, 4-de-weight removal groove, 5-locking hole, 6-locking groove, 7-fixing hole, 8-through groove. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0019] A maintenance-friendly coupling includes a first connecting body 1 and a second connecting body 2, both of which are hollow annular structures. The first connecting body 1 can essentially be a sleeve, while the second connecting body 2 is a flange structure. The outer diameter of the second connecting body 2 is larger than that of the first connecting body 1. The first connecting body 1 is coaxially fixed to one side of the second connecting body 2, and the inner diameters of the first connecting body 1 and the second connecting body 2 are the same, allowing them to be fitted onto a water pump shaft after being fixed as a single unit. A keyway 3 is provided on the inner wall of the first connecting body 1, which engages with a flat key fixed to the water pump shaft. After the coupling is connected and fixed to the drive shaft through a fixing hole 7 on the second connecting body 2, the engagement between the keyway 3 and the flat key ensures synchronous rotation between the drive shaft and the water pump shaft.

[0020] A weight-relief groove 4 is provided along the outer edge of the first connecting body 1. To facilitate the removal of the coupling from the first connecting body 1, a through groove 8 is provided through the thickness direction of the first connecting body 1 and the second connecting body 2. Locking holes 5 for locking both sides of the through groove 8 are provided on the first connecting body 1 facing the through groove 8. In use, the coupling is first connected and fixed to the drive shaft through the flange structure of the second connecting body 2. Then, the coupling is fitted onto the water pump shaft. The tightening process on both sides of the through groove 8 is completed by directly screwing bolts into the locking holes 5, thereby locking and fixing the first connecting body 1 of the coupling to the water pump shaft. In other embodiments, the through groove 8 is only provided based on the thickness direction of the first connecting body 1. Since the width of the second connecting body 2 is smaller than that of the first connecting body 1, its influence on the water pump shaft is negligible. The installation method is also the same: the tightening process on both sides of the through groove 8 is completed by directly screwing bolts into the locking holes 5, thereby locking and fixing the first connecting body 1 of the coupling to the water pump shaft. It is worth noting that there are multiple locking holes 5, and the multiple locking holes 5 are equally spaced along the length direction of the first connecting body 1.

[0021] In some embodiments, a locking groove 6 is provided along the length of the first connecting body 1. The locking groove 6 is located on one side of the through groove 8 and corresponds to the position of the multiple locking holes 5. The locking groove 6 provides conditions for the installation of bolts. Compared with directly opening bolt holes on the outer edge surface of the first connecting body 1 facing the through groove 8, the setting of the locking groove 6 makes it easier to confirm the depth and position of the bolt holes, and can more quickly find the position of the locking bolts during the installation of the coupling, which facilitates the installation process.

[0022] The following is a detailed description of the de-duplication groove 4. The de-duplication groove 4 is a groove formed on the outer edge surface of the first connecting body 1. It is formed along the length direction of the first connecting body 1, and the centerline of the de-duplication groove 4 is offset from the centerline of the keyway 3 by a certain angle, either clockwise or counterclockwise, depending on the actual needs. The length of the de-duplication groove 4 is less than the length of the first connecting body 1. The width of the de-duplication groove 4 is 12-16mm, and the depth is 5.5-6.5mm.

[0023] The following describes in detail the setting of the deduplication tank with reference to the embodiments.

[0024] Example 1

[0025] The de-weighting groove 4 is deflected 4.5° clockwise based on the centerline of the keyway 3. At this time, the width of the de-weighting groove 4 is 12mm and the depth is 5.5mm, which can offset the imbalance of the coupling.

[0026] Example 2

[0027] The de-weighting groove 4 is deflected 5.0° counterclockwise based on the centerline of the keyway 3. At this time, the width of the de-weighting groove 4 is 14mm and the depth is 6mm, which can offset the imbalance of the coupling.

[0028] Example 3

[0029] The de-weighting groove 4 is deflected 5.5° counterclockwise from the centerline of the keyway 3. At this time, the width of the de-weighting groove 4 is 16mm and the depth is 6.5mm to offset the imbalance of the coupling.

[0030] Based on the aforementioned embodiments 1-3, when the de-weighting groove 4 deflects a certain angle based on the centerline of the keyway 3, either clockwise or counterclockwise, the width and depth of the de-weighting groove 4 need to be changed accordingly so that it can offset the imbalance of the coupling. As the deflection angle increases, the width and depth of the de-weighting groove 4 also need to be increased to offset the imbalance of the coupling.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A maintenance-friendly coupling, comprising a first connecting body (1) and a second connecting body (2), wherein both the first connecting body (1) and the second connecting body (2) are hollow annular structures and the outer diameter of the second connecting body (2) is larger than the outer diameter of the first connecting body (1), the first connecting body (1) is coaxially fixed to one side of the second connecting body (2), and a keyway (3) is provided on the inner wall of the first connecting body (1), characterized in that, A weight-removing groove (4) is provided along the outer edge of the first connector (1), and a through groove (8) is provided through the thickness direction of the first connector (1) and the second connector (2). Locking holes (5) for locking the two sides of the through groove (8) are provided on the first connector (1) facing the through groove (8).

2. The easy-to-maintain coupling according to claim 1, characterized in that, There are multiple locking holes (5), and the multiple locking holes (5) are equally spaced along the length direction of the first connecting body (1).

3. The easy-to-maintain coupling according to claim 2, characterized in that, A locking groove (6) is provided along the length direction of the first connector (1). The locking groove (6) is located on one side of the through groove (8) and corresponds to the position of the plurality of locking holes (5).

4. The easy-to-maintain coupling according to claim 1, characterized in that, The centerline of the de-duplication groove (4) is deflected by 4.5°-5.5° based on the centerline of the keyway (3).

5. The easy-to-maintain coupling according to claim 4, characterized in that, The length of the de-weighting groove (4) is less than the length of the first connector (1).

6. The easy-to-maintain coupling according to claim 5, characterized in that, The width of the de-weighting groove (4) is 12-16mm and the depth is 5.5-6.5mm.

7. The easy-to-maintain coupling according to claim 1, characterized in that, A plurality of fixing holes (7) are provided along the thickness direction of the second connector (2) for fixing the second connector (2) onto the drive shaft.

Images