A serpentine spring split coupling

Abstract

The present invention discloses a serpentine spring split coupling, which belongs to the technical field of couplings, and includes a cover shell, wherein the cover shell is provided with two groups and is symmetrical to each other, the two groups of cover shells are fixed by bolts, and half couplings are symmetrically installed at both ends of the inside of the cover shell. The present invention provides an observation mechanism composed of a lower through port, an upper through port, an acrylic transparent lens, a stepped groove, an external threaded gland, a rubber strip, a limit groove, and a sealing ring on the outside of the cover shell, and the inside of the cover shell can be directly observed through the acrylic transparent lens, without the need to split the coupling as a whole, and the use is more convenient. In addition, the use of the rubber strip in the observation mechanism can not only clean the bottom of the acrylic transparent lens during the rotation of the acrylic transparent lens, but also the width of the rubber strip is the same as the initial thickness of the serpentine spring, and the rubber strip can be used as a reference during the observation process to facilitate the determination of the wear amount of the serpentine spring, and the practicality is higher.

Description

Technical Field

[0001] The invention relates to a serpentine spring split coupling, belonging to the technical field of couplings. Background Art

[0002] The serpentine spring coupling is a metal with advanced structure. It transmits torque by means of serpentine spring sheets. The serpentine spring coupling is the most advanced shaft connection transmission component in the international mechanical field today, and is also a very common shaft connection transmission component.

[0003] In the prior art, the invention with application number 202120104595.0 discloses a serpentine spring split coupling. In order to solve the problem that the structure of the traditional serpentine spring split coupling is too simple and the device cover needs to be disassembled when lubrication is needed for a long time, which is very inconvenient, a sealing cover is fixedly connected to the top of the lubrication groove. When lubrication is needed, loosen the locking bolt, use the hinge column to flip and lift the top of the sealing cover, and after replenishing the high-viscosity aluminum disulfide grease inside the coupling, cover the sealing cover again and tighten the locking bolt. Because the bottom end of the sealing cover is fixedly connected to the lubrication groove by threads, the sealing cover will not fall off even at high-speed operation, and the stability is relatively good.

[0004] Similar to the above application, there are still some shortcomings:

[0005] When the wear of the serpentine spring exceeds 15%-20% of the original thickness, it needs to be replaced. However, during the inspection of the serpentine spring, it is impossible to directly observe the inside from the outside of the cover. The cover needs to be opened, and the grease content inside the cover cannot be directly observed, which is inconvenient to use.

[0006] Therefore, a serpentine spring split coupling is designed to optimize the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a serpentine spring split coupling to solve the problems raised in the above background technology.

[0008] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] A serpentine spring split coupling comprises a cover shell. The cover shells are provided in two groups and are symmetrical to each other. The two groups of cover shells are fixed by bolts. Half couplings are symmetrically installed at both ends of the inside of the cover shell. A serpentine spring is installed between the ends of the two groups of half couplings. An oil filling hole is opened at the bottom of the outer side of the cover shell. A sealing screw plug is threadedly installed on the oil filling hole. An observation mechanism is provided on the top of the cover shell.

[0010] Preferably: the observation mechanism includes a lower opening, an upper opening, an acrylic transparent lens, a stepped groove, an externally threaded gland and a rubber strip, the lower opening is opened at the middle position of the top of the cover shell, the top of the lower opening is opened with an upper opening, a rubber strip is fixed between the two sides of the bottom of the lower opening, an acrylic transparent lens is rotatably installed inside the lower opening, the bottom of the acrylic transparent lens is fitted with the top of the rubber strip, a stepped groove is opened on the outside of the acrylic transparent lens, and an externally threaded gland is installed on the internal thread of the upper opening.

[0011] Preferably: a sealing ring is provided between the bottom of the external thread gland and the top of the stepped groove, and both the bottom of the external thread gland and the top of the stepped groove are provided with limiting grooves matching with the external thread gland.

[0012] Preferably, the top end of the acrylic transparent lens passes through the middle of the external threaded gland, and the outer side of the top end of the acrylic transparent lens is provided with anti-slip grooves.

[0013] Preferably, the length of the rubber strip is the same as the diameter of the lower through-hole, and the width of the rubber strip is the same as the thickness of the serpentine spring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By arranging an observation mechanism consisting of a lower through port, an upper through port, an acrylic transparent lens, a stepped groove, an external threaded gland, a rubber strip, a limit groove and a sealing ring on the outer side of the cover shell, the inside of the cover shell can be directly observed through the acrylic transparent lens, and there is no need to disassemble the coupling as a whole, which is more convenient to use. In addition, the use of the rubber strip in the observation mechanism can not only clean the bottom of the acrylic transparent lens during the rotation of the acrylic transparent lens, but also the width of the rubber strip is the same as the initial thickness of the serpentine spring. The rubber strip can be used as a reference during the observation process to facilitate the determination of the wear amount of the serpentine spring, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional view of the present invention;

[0017] Figure 2 It is a structural diagram of the observation mechanism of the present invention;

[0018] Figure 3 For the present invention Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 It is a top view of the present invention.

[0020] In the figure: 1. cover;

[0021] 2. Half coupling;

[0022] 3. Serpentine spring;

[0023] 4. Oil filling hole;

[0024] 5. Sealing screw plug;

[0025] 6. Observation mechanism; 601. Lower port; 602. Upper port; 603. Acrylic transparent lens; 604. Step groove; 605. External thread gland; 606. Rubber strip; 607. Limiting groove; 608. Sealing ring. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0027] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment proposes a serpentine spring split coupling, including a cover shell 1, wherein the cover shell 1 is provided with two groups and are symmetrical to each other, the two groups of cover shells 1 are fixed by bolts, half couplings 2 are symmetrically installed at both ends of the inside of the cover shell 1, a serpentine spring 3 is installed between the ends of the two groups of half couplings 2, an oil filling hole 4 is opened at the bottom of the outer side of the cover shell 1, a sealing screw plug 5 is threadedly installed on the oil filling hole 4, and an observation mechanism 6 is provided on the top of the cover shell 1.

[0033] The serpentine spring coupling belongs to the prior art, so its installation process is not described in detail in this application. During use, regular lubrication of the coupling is also a very important maintenance measure. The amount of grease inside the cover 1 is observed through the observation mechanism 6. When the grease is too little, the sealing screw plug 5 can be removed and the grease can be directly added from the oil filling hole 4 without disassembling the cover 1. In addition, when checking the wear of the serpentine spring 3, the serpentine spring 3 inside the cover 1 can also be directly observed through the observation mechanism 6, and a visual inspection can be used to directly make a visual judgment.

[0034] Example 2

[0035] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0036] like Figure 2 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the observation mechanism 6 includes a lower port 601, an upper port 602, an acrylic transparent lens 603, a stepped groove 604, an externally threaded pressure cap 605 and a rubber strip 606. The lower port 601 is opened at the middle position of the top of the cover shell 1, the top of the lower port 601 is provided with an upper port 602, a rubber strip 606 is fixed between the two sides of the bottom end of the lower port 601, an acrylic transparent lens 603 is rotatably installed inside the lower port 601, the bottom of the acrylic transparent lens 603 is fitted with the top of the rubber strip 606, the outer side of the acrylic transparent lens 603 is provided with a stepped groove 604, and the internal thread of the upper port 602 is provided with an externally threaded pressure cap 605.

[0037] When observing the amount of grease inside the cover 1 and the wear of the serpentine spring 3, first control the rotation of the acrylic transparent lens 603, and rotate the bottom of the acrylic transparent lens 603 in contact with the rubber strip 606, and use the rubber strip 606 to scrape off the grease on the bottom of the acrylic transparent lens 603 to ensure clear vision.

[0038] like Figure 2 and Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned method, a sealing ring 608 is further provided between the bottom of the external threaded cover 605 and the top of the stepped groove 604, and the bottom of the external threaded cover 605 and the top of the stepped groove 604 are both provided with a limiting groove 607 that cooperates with the external threaded cover 605. The use of the sealing ring 608 can ensure the sealing effect inside the through hole to prevent the outflow of grease.

[0039] like Figure 2 As shown, as a preferred implementation, on the basis of the above method, further, the top end of the acrylic transparent lens 603 passes through the middle of the external threaded cover 605, and the outer side of the top end of the acrylic transparent lens 603 is provided with anti-slip grooves. During the adjustment of the acrylic transparent lens 603, the use of the anti-slip grooves can increase the friction between the fingers, making it convenient to control the rotation of the acrylic transparent lens 603.

[0040] like Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the length of the rubber strip 606 is the same as the diameter of the lower opening 601, and the width of the rubber strip 606 is the same as the thickness of the serpentine spring 3. When visually judging the thickness of the serpentine spring 3, the width of the rubber strip 606 can be used as a reference to improve the accuracy of visual inspection.

[0041] Example 3

[0042] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0043] During use, it is very important to regularly lubricate the coupling and check the wear of the serpentine spring 3. During the inspection, pinch the top of the acrylic transparent lens 603 with your fingers to control the rotation of the acrylic transparent lens 603. The bottom of the acrylic transparent lens 603 is attached to the rubber strip 606 for rotation. The grease on the bottom of the acrylic transparent lens 603 is scraped off by the rubber strip 606 to ensure a clear line of sight. Then, the interior of the cover 1 is observed through the acrylic transparent lens 603. When the grease is too little, the sealing screw plug 5 can be removed and the grease can be directly added from the oil filling hole 4 without disassembling the cover 1. In addition, when checking the wear of the serpentine spring 3, the width of the rubber strip 606 is the same as the thickness of the serpentine spring 3. The width of the rubber strip 606 can be used as a reference to improve the accuracy of visual inspection.

[0044] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A serpentine spring split coupling, comprising a housing (1), characterized in that: The cover shell (1) is provided with two groups which are symmetrical to each other. The two groups of cover shells (1) are fixed by bolts. Half couplings (2) are symmetrically installed at both ends of the inside of the cover shell (1). A serpentine spring (3) is installed between the ends of the two groups of half couplings (2). An oil filling hole (4) is opened at the bottom of the outer side of the cover shell (1). A sealing screw plug (5) is threadedly installed on the oil filling hole (4). An observation mechanism (6) is provided on the top of the cover shell (1).

2. The serpentine spring split coupling according to claim 1, characterized in that: The observation mechanism (6) comprises a lower opening (601), an upper opening (602), an acrylic transparent lens (603), a stepped groove (604), an externally threaded gland (605) and a rubber strip (606); the lower opening (601) is opened at the middle position of the top of the cover shell (1); the upper opening (602) is opened at the top of the lower opening (601); a rubber strip (606) is fixed between two sides of the bottom end of the lower opening (601); an acrylic transparent lens (603) is rotatably mounted inside the lower opening (601); the bottom of the acrylic transparent lens (603) is fitted with the top of the rubber strip (606); a stepped groove (604) is opened on the outside of the acrylic transparent lens (603); and an externally threaded gland (605) is mounted on the internal threads of the upper opening (602).

3. The serpentine spring split coupling according to claim 2, characterized in that: A sealing ring (608) is provided between the bottom of the external threaded gland (605) and the top of the stepped groove (604), and a limiting groove (607) cooperating with the external threaded gland (605) is provided at the bottom of the external threaded gland (605) and the top of the stepped groove (604).

4. The serpentine spring split coupling according to claim 3, characterized in that: The top end of the acrylic transparent lens (603) passes through the middle of the external threaded gland (605), and the outer side of the top end of the acrylic transparent lens (603) is provided with anti-slip grooves.

5. The serpentine spring split coupling according to claim 4, characterized in that: The length of the rubber strip (606) is the same as the diameter of the lower opening (601), and the width of the rubber strip (606) is the same as the thickness of the serpentine spring (3).

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