Pull-out coupling cover

Abstract

The utility model discloses a pull formula coupling cover, including first shield, including two groups of first support plate and first arc top cover who sets up in parallel, the middle part of first arc top cover is hinged with the flap, be equipped with first guide slot and first limit post on first support plate, and first limit post sets up in the end of first guide slot, second shield includes two groups of second support plate and second arc top cover, and second support plate is equipped with second guide slot, and first limit post and the inner wall sliding fit of second guide slot are set up, and limit structure includes limit bolt, limit nut and lock nut, and limit nut sets up in first shield, and limit nut is along second guide slot sliding setting, and limit bolt and limit nut cooperation setting, the end of limit bolt can extend into first guide slot and second guide slot, and lock nut is constituted with second support plate and is fixed to first support plate with abutting cooperation to fix second support plate in first support plate. Solve the problem of poor length adaptability and inconvenient maintenance of coupling cover in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of coupling cover technology, specifically a pull-out coupling cover. Background Technology

[0002] As a core connecting component in mechanical transmission systems, couplings are mainly used to connect two shafts to transmit motion and torque. To prevent foreign objects from being caught or thrown out, protective covers are usually installed on the outside of the coupling to achieve full enclosure. Traditional coupling covers mostly adopt a fixed-size one-piece structure, which has extremely poor versatility. When encountering couplings of non-standard length, it is often necessary to temporarily weld auxiliary covers to both sides of the main cover for splicing and adaptation. This method not only increases costs, but also makes it impossible to adjust again after welding and fixing, resulting in the inability to reuse the cover between different equipment and causing a waste of resources.

[0003] To address the length compatibility issue, some adjustable covers have emerged in the prior art. For example, Chinese patent CN215489028U discloses an adjustable coupling cover. Its adjustment structure relies on the bolt fastening of multiple sets of splicing parts. First, due to the lack of a dedicated linear guide groove and limiting guide mechanism, the cover is prone to jamming, skewing, or excessive friction when pulled out for adjustment. Second, the structural design of this type of cover does not fully consider the convenience of daily operation and maintenance. When the coupling needs to be repaired, maintenance personnel must disassemble the cumbersome fastening parts one by one and completely separate the cover body. The complicated disassembly and assembly process significantly increases the downtime for equipment maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a pull-out coupling cover to solve the technical problems mentioned in the background art, such as the lack of smooth sliding and inconvenience in maintenance of existing coupling covers during adjustment.

[0005] To solve the above-mentioned technical problems, this utility model provides a pull-out coupling cover, including a first cover, which includes two sets of parallel first support plates and a first arc-shaped top cover disposed on the upper part of the first support plates. A flip cover is hinged to the middle of the first arc-shaped top cover. The first support plate is provided with a first guide groove that extends horizontally along the length direction. The end of the first guide groove is provided with a first limiting post. The end of the first limiting post is provided with an external thread. The second protective cover includes two sets of second support plates respectively arranged parallel to the outer side of the first support plate and a second arc-shaped top cover arranged on the upper part of the second support plate. The second support plate is provided with a second guide groove corresponding to the first guide groove. The middle outer wall of the first limiting post is slidably engaged with the inner wall of the second guide groove to pull the second protective cover relative to the first protective cover along the second guide groove. The end of the first limiting post extends out of the outer side of the second support plate. The limiting structure includes a limiting bolt, a limiting nut, and a locking nut. The limiting nut is slidably disposed on the outer side of the first protective cover and slides along the length direction of the second guide groove. The locking nut is disposed on the outer side of the second support plate and is engaged with the end of the first limiting post. The limiting bolt is engaged with the limiting nut. The end of the limiting bolt can extend into the first guide groove and the second guide groove, and the locking nut is configured to abut against the second support plate to fix the second support plate to the first support plate.

[0006] Based on the above technical solution, the present invention is further described as follows: it also includes a guide structure, which includes a guide frame disposed on the outer side of the second support plate. The guide frame is configured as a long strip frame. The guide frame is disposed on the outer side of the second guide groove, and the guide frame is provided with a guide cavity that slides with the limiting nut. The limiting nut moves linearly along the guide cavity relative to the second guide groove. One end of the limiting bolt is provided with an abutment portion with a diameter greater than the width of the second guide groove.

[0007] As a further optimization of this utility model, it also includes an elastic structure, which includes at least one set of springs. The springs are disposed in the guide frame, and the elastic extension direction of the springs is parallel to the length direction of the second guide groove. One end of the spring is fixed to the guide frame, and the other end of the spring is connected to the limiting nut. In the naturally extended state of the spring, the limiting nut abuts against the first limiting post.

[0008] As a further optimization of this utility model, the limiting nut includes a nut body, an arc-shaped groove disposed on one side of the nut body, and spring lugs disposed at both ends of the arc-shaped groove.

[0009] As a further optimization of this utility model, one end of the limiting bolt is provided with a planar abutment portion, which abuts against the outer side of the second support plate. When the planar abutment portion abuts against the outer side of the second support plate, the insertion length of the limiting bolt is longer than the thickness of the second support plate.

[0010] As a further optimization of this utility model, the first guide groove includes several sets of bolt holes.

[0011] As a further optimization of this utility model, the guiding structure also includes two sets of guide rods, which are disposed in the guiding cavity and arranged parallel to each other on both sides of the second guiding groove. The spring lug is provided with a rod hole that slides with the guide rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes a first protective cover to isolate the coupling body and provide basic support for a second protective cover. A flip-top allows for easy access to the maintenance port without disassembling the entire cover. The second and first protective covers are designed for adjustable length through a pull-out mechanism. A limiting structure locks the second protective cover in place after it is pulled from the first cover, and also allows for rotation of the second protective cover within the first cover, providing sufficient space for opening the flip-top. A guiding structure ensures smooth horizontal pulling of the second protective cover, and the limiting structure allows for rotation of the second protective cover at any position, providing space for opening the flip-top. An elastic structure provides positioning support for the limiting structure. This design improves the versatility and operational efficiency of the coupling cover in various scenarios. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a pull-out coupling cover; Figure 2 A side view of a pull-out coupling cover; Figure 3 A schematic diagram of the first protective cover of a pull-out coupling cover; Figure 4 A schematic diagram of the second protective cover of a pull-out coupling cover; Figure 5 A schematic diagram of the guide structure for a pull-out coupling cover; Figure 6 A schematic diagram of the limiting structure of a pull-out coupling cover. In the diagram: 1-First protective cover, 11-First support plate, 111-Mounting foot, 112-Flip cover, 113-First guide groove, 114-First limiting post, 12-First arc-shaped top cover. 2-Second protective cover, 21-Second support plate, 211-Second guide groove, 22-Second arc-shaped top cover, 3-Limiting structure, 31-Limiting bolt, 32-Limiting nut, 321-Nut body, 322-Arc-shaped groove, 323-Spring lug. 33-Locking nut, 331-Flat abutment portion, 4-Guiding structure, 41-Guiding frame, 42-Guiding cavity, 5-Elastic structure, 51-Spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-6 This utility model provides a pull-out coupling cover, including a first cover 1, a second cover 2, a limiting structure 3, a guiding structure 4, and an elastic structure 5. The first cover 1 isolates the coupling body and provides basic support for the second cover 2. A flip cover 112 allows for easy access to the maintenance port without disassembling the entire cover. The second cover 2's pull-out mechanism with the first cover 1 allows for adjustment of the overall length of the cover. The limiting structure 3 enables the second cover 2 to be adjusted within the first cover. The first cover 1 has a locking function after being pulled out, and the second cover 2 can rotate on the first cover 1 with the help of the limiting structure 3, providing sufficient space for the opening of the flip cover 112; the guide structure 4 provides a sliding guide function for the second cover 2 when it is pulled out, ensuring that the second cover 2 is pulled out smoothly in the horizontal direction. At the same time, the limiting structure 3 enables the second cover 2 to rotate at any position, providing space for the opening of the flip cover 112; the elastic structure 5 provides a positioning function for the limiting structure 3. This improves the universal adaptability and operational efficiency of the coupling cover in multiple scenarios.

[0016] For details, please refer to the appendix. Figure 1 and Figure 3 The first protective cover 1 includes two sets of parallel first support plates 11 and a first arc-shaped top cover 12 disposed on the upper part of the first support plates 11. The first support plates 11 are configured as rectangular plates and are fixed to both sides of the coupling. The lower end of the first support plate 11 is provided with mounting feet 111, and fastening holes are reserved on the mounting feet 111 to realize the fixing function of the first protective cover 1. The two ends of the first arc-shaped top cover 12 are connected to the upper part of the first support plate 11 to form an inverted U-shaped channel to achieve shielding and protection of the main body of the coupling. Please refer to the attached document. Figure 3To meet the needs of daily equipment operation and maintenance, a hinged cover 112 is provided in the middle of the first arc-shaped top cover 12. Specifically, an inspection window is provided in the middle area of ​​the first arc-shaped top cover 12, and a hinged cover 112 is provided in the inspection window. The outline of the hinged cover 112 is adapted to the curvature of the first arc-shaped top cover 12. One end of the hinged cover 112 is connected by a hinge shaft, so that the hinged cover 112 can be opened upward relative to the first arc-shaped top cover 12, so as to realize the convenient maintenance function of the coupling through the hinged cover 112 without disassembling the first protective cover 1. In addition, the first protective cover 1 serves as the support and mating reference for the second protective cover 2, and each set of first support plates 11 is provided with a horizontally set first guide groove 11. 3. The first guide groove 113 may be, but is not limited to, multiple bolt holes or milled elongated holes that are fixedly matched with the limiting structure 3 and arranged in a horizontal straight line. In this embodiment, the first guide groove 113 is configured as an elongated hole extending from one end of the first support plate 11 to the other end. A first limiting post 114 is provided at both ends of the first elongated hole, which is used to limit and guide the second protective cover 2 by pulling it out through the first limiting post 114. At the same time, the first limiting post 114 can also serve as a fulcrum for the rotation of the second protective cover 2. The length of the first limiting post 114 is longer than the sum of the thicknesses of the first support plate 11 and the second support plate 21. The end of the first limiting post 114 is provided with an external thread that matches the limiting structure 3.

[0017] Please refer to the attached document. Figure 2 and Figure 4The second protective cover 2 is installed above the first protective cover 1. Specifically, the second protective cover 2 includes two sets of second support plates 21 respectively arranged parallel to the outer side of the first support plate 11 and a second arc-shaped top cover 22 disposed on the upper part of the second support plate 21. The second support plate 21 is configured as a rectangular plate. The two ends of the second arc-shaped top cover 22 are respectively connected to the upper ends of the two second support plates 21 and form an inverted U-shaped channel. The inner side of the second arc-shaped top cover 22 is configured as an arc shape that fits snugly against the outer side of the first arc-shaped top cover 12. The second support plate 21 is provided with a second guide groove 211 corresponding to the first guide groove 113. The second guide groove 211 is configured as an elongated hole extending from one end of the second support plate 21 to the other end. The width and height of the first guide groove 113 and the second guide groove 211 are the same. When the second arc-shaped top cover 22 is attached to the first arc-shaped top cover 12, the first guide groove 113 and the second guide groove 211 are at the same horizontal height. When the two are assembled, the first guide groove 113 on the first support plate 11... A limiting post 114 passes through the second guide groove 211, and the first limiting post 114 is slidably engaged with the inner wall of the second guide groove 211, so that the second cover 2 can be linearly pulled and moved relative to the first cover 1 along the trajectory of the second guide groove 211 with the first limiting post 114 as the guide point, or rotated with the first limiting post 114 as the axis. In this embodiment, there are two second covers 2, which are respectively set at both ends of the first cover 1. By pulling the second covers 2 on the first cover 1, the overall protective length of the coupling cover can be adapted and adjusted by adjusting the extension length of the second covers 2 at both ends, so as to cover coupling components with different axial lengths. At the same time, since the second covers 2 are located above the first cover 1, if the pulling distance between the two second covers 2 is too short, it will affect the opening of the flip cover 112. The rotation of the second covers 2 with the first limiting post 114 as the fulcrum by the limiting structure 3 can provide sufficient space for the flip cover 112 to open.

[0018] Please refer to the attached document. Figure 3 and attached Figure 6 The two second protective covers 2 are fixed by pulling and moving on the first protective cover 1 and by rotating and limiting, respectively, through the limiting structure 3. Specifically, the limiting structure 3 includes a limiting bolt 31, a limiting nut 32, and a locking nut 33. The locking nut is set on the outer side of the second support plate 21 and is matched with the end of the first limiting post 114. After the extension length of the second protective cover 2 is adjusted, the locking nut 33 is tightened. The locking nut 33 presses the second support plate 21 tightly against the first support plate 11. With huge axial pressure and friction, the second protective cover 2 is completely fixed to prevent it from sliding or rotating. At the same time, the rotation of the second protective cover 2 can be released by unlocking the locking nut 33.

[0019] The rotation of the second protective cover 2 is achieved by the cooperation of the limiting nut 32 and the limiting bolt 31. Specifically, the limiting nut 32 is set on the second protective cover 2 and slides along the second guide groove 211. The outer side of the second protective cover 2 is provided with a guide structure 4 to limit and guide the sliding of the limiting nut 32. In this embodiment, the guide structure 4 includes a guide frame 41 set on the outer side of the second support plate 21. The guide frame 41 is set as a long strip frame and the guide frame 41 is provided with a guide cavity 42 that slides with the limiting nut 32. The limiting nut 32 moves linearly along the guide cavity 42 relative to the second guide groove 211.

[0020] Please refer to the attached document. Figure 6 The limiting bolt 31 is configured to cooperate with the limiting nut 32. Specifically, the limiting nut 32 includes a nut body 321, an arc-shaped groove 322 disposed on one side of the nut body 321, and spring lugs 323 disposed at both ends of the arc-shaped groove 322. The nut body 321 is slidably constrained to the outer side of the second support plate 21 by the guide structure 4, and the sliding path of the nut body 321 is consistent with the extension direction of the second guide groove 211. The shape of the arc-shaped groove 322 is adapted to the outer contour of the first limiting post 114. With the help of the elastic structure 5, the limiting nut 32 can fit or abut against the first limiting post 114 extending out of the second guide groove 211 during sliding. The limiting bolt 31 is provided with a thread that cooperates with the nut body 321. One end of the bolt is provided with a flat abutment part 331. The diameter of the flat abutment part 331 is larger than the width of the second guide groove 211. When the limiting bolt 31 is tightened, the flat abutment part 331 can abut against the outer side of the second support plate 21. The movement of the limiting nut 32 is restricted by friction. At this time, the end of the flat abutment part 331 of the limiting bolt 31 only enters the second guide groove 211. Therefore, the limiting nut 32 can rotate around the first limiting post, thereby realizing the rotation of the second cover 2. When the position of the second cover 2 affects the opening of the flip cover 112, the locking nut 33 is loosened, and the second cover 2 is rotated to the avoidance position with the first limiting post 114 as the fulcrum. The flip cover 112 can then be opened upwards, and the coupling can be maintained through the inspection window without disassembling the entire cover.

[0021] Please refer to the attached document. Figure 1 and attached Figure 5 The elastic structure 5 includes at least one set of springs 51, which are disposed within the guide frame 41. The elastic extension direction of the springs 51 is parallel to the length direction of the second guide groove 211. One end of each spring 51 is fixed to the guide frame 41, and the other end is connected to a limiting nut 32. In the naturally extended state of the springs 51, the limiting nut 32 abuts against the first limiting post 114. The elastic structure 5 provides preload to the limiting nut 32, ensuring that it always abuts against the first limiting post 114.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pull-out coupling cover, characterized in that, include The first protective cover (1) includes two sets of parallel first support plates (11) and a first arc-shaped top cover (12) disposed on the upper part of the first support plate (11). A flip cover (112) is hinged to the middle of the first arc-shaped top cover (12). The first support plate (11) is provided with a first guide groove (113) extending horizontally along the length direction. The end of the first guide groove (113) is provided with a first limiting post (114). The end of the first limiting post (114) is provided with an external thread. The second protective cover (2) includes two sets of second support plates (21) respectively arranged parallel to the outer side of the first support plate (11) and a second arc-shaped top cover (22) arranged on the upper part of the second support plate (21). The second support plate (21) is provided with a second guide groove (211) corresponding to the first guide groove (113). The middle outer wall of the first limiting post (114) is slidably engaged with the inner wall of the second guide groove (211) to pull the second protective cover (2) relative to the first protective cover (1) along the second guide groove (211). The end of the first limiting post (114) extends out of the outer side of the second support plate (21). The limiting structure (3) includes a limiting bolt (31), a limiting nut (32) and a locking nut (33). The limiting nut (32) is slidably disposed on the outer side of the first protective cover (1) and slides along the length direction of the second guide groove (211). The locking nut (33) is disposed on the outer side of the second support plate (21) and is engaged with the end of the first limiting post (114). The limiting bolt (31) is engaged with the limiting nut (32). The end of the limiting bolt (31) can extend into the first guide groove (113) and the second guide groove (211), and the locking nut (33) is configured to abut against the second support plate (21) to fix the second support plate (21) to the first support plate (11).

2. The pull-out coupling cover according to claim 1, characterized in that, It also includes a guide structure (4), which includes a guide frame (41) disposed on the outer side of the second support plate (21). The guide frame (41) is configured as a long strip frame. The guide frame (41) is disposed on the outer side of the second guide groove (211). The guide frame (41) has a guide cavity (42) inside that slides with the limiting nut (32). The limiting nut (32) moves linearly along the guide cavity (42) relative to the second guide groove (211). One end of the limiting bolt (31) is provided with an abutment portion with a diameter greater than the width of the second guide groove (211).

3. The pull-out coupling cover according to claim 2, characterized in that, It also includes an elastic structure (5), which includes at least one set of springs (51). The springs (51) are disposed in the guide frame (41). The elastic extension direction of the springs (51) is parallel to the length direction of the second guide groove (211). One end of the springs (51) is fixed to the guide frame (41), and the other end of the springs (51) is connected to the limiting nut (32). When the springs (51) are naturally extended, the limiting nut (32) abuts against the first limiting post (114).

4. The pull-out coupling cover according to claim 3, characterized in that, The limiting nut (32) includes a nut body (321), an arc-shaped groove (322) disposed on one side of the nut body (321), and spring lugs (323) disposed at both ends of the arc-shaped groove (322).

5. The pull-out coupling cover according to claim 4, characterized in that, One end of the limiting bolt (31) is provided with a flat abutment portion (331), which abuts against the outer side of the second support plate (21). When the flat abutment portion (331) abuts against the outer side of the second support plate (21), the insertion length of the limiting bolt (31) is longer than the thickness of the second support plate (21).

6. The pull-out coupling cover according to claim 1, characterized in that, The first guide groove (113) includes several sets of bolt holes.

7. The pull-out coupling cover according to claim 4, characterized in that, The guide structure (4) also includes two sets of guide rods. The guide rods are disposed in the guide cavity (42) and are arranged parallel to both sides of the second guide groove (211). The spring lug (323) is provided with a rod hole that slides with the guide rod.

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