Sealed cap nut for diesel engines

Abstract

The utility model provides a kind of sealing cover nut for diesel engine belongs to cover nut technical field, it solves the length of cap above nut usually cannot be adjusted, so that the nut cannot adapt to bolt of different length, limit the technical problem of flexibility of its use.A kind of sealing cover nut for diesel engine, including bolt, bolt top is connected with first nut, first nut top is fixedly connected with cap, cap top is equipped with first sliding slot, first sliding slot inside is slidably connected with extension cap, two sealing pads are mutually matched with extension cap, two frame sides are equipped with adjusting mechanism for adjusting sealing pad, two frame sides away from sealing pad surface are matched with extrusion ring, second nut is connected with cap by thread, second nut side is equipped with limiting mechanism for limiting second nut.In the utility model, through the setting of extension cap, the adaptability of cap can be ensured stronger.

Description

Technical Field

[0001] This utility model belongs to the technical field of cap nuts, and relates to diesel engines, specifically a sealing cap nut for diesel engines. Background Technology

[0002] A sealing cap nut for diesel engines is a type of connector specifically designed for use in diesel engines and other mechanical equipment. It has a cap-like appearance and is primarily used for fastening and sealing components. Its sealing design prevents liquids, gases, or dirt from entering the connection, improving the system's reliability and durability. These nuts typically possess excellent sealing performance, vibration resistance, corrosion resistance, and ease of installation, and are widely used in diesel engine oil passages, cooling systems, and other connection points requiring sealing, ensuring the high efficiency and safety of the diesel engine during operation.

[0003] However, some existing cap nuts have caps whose cap length is not adjustable, making them unsuitable for bolts of different lengths and limiting their flexibility of use. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sealing cap-shaped nut for diesel engines. The technical problem this utility model aims to solve is that the length of the cap on the top of the nut is usually not adjustable, which makes the nut unable to adapt to bolts of different lengths and limits its flexibility of use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sealing cap-shaped nut for diesel engines includes a bolt, a first nut threadedly connected to the top of the bolt, a cap fixedly connected to the top of the first nut, a first groove on the top of the cap, an extension cap slidably connected inside the first groove, a constraint mechanism for constraining the extension cap inside the first groove, two frames symmetrically slidably connected to the top of the cap, a sealing gasket fixedly connected inside the two frames near the extension cap, both sealing gaskets cooperating with the extension cap, an adjustment mechanism for adjusting the sealing gasket on one side of each of the two frames, and a compression ring fitted on the surface of the two frames away from the sealing gasket, a second nut fixedly connected to the bottom of the compression ring, the second nut being threadedly connected to the cap, a constraint mechanism for limiting the second nut on one side, the extension cap ensuring greater adaptability.

[0007] As a further embodiment of this utility model, the constraint mechanism includes multiple limiting rods, all of which are slidably connected to the bottom of the extension cap and are evenly arranged in a ring. The bottom ends of the multiple limiting rods are fixedly connected to the inside of the first sliding groove. A first tension spring is sleeved on the surface of each of the multiple limiting rods, the bottom ends of the multiple first tension springs are fixedly connected to the inside of the first sliding groove, and the top ends of the multiple first tension springs are fixedly connected to the bottom of the extension cap.

[0008] As a further embodiment of this utility model, the adjustment mechanism includes two second slide grooves, both of which are opened on the top of the cap. A support rod is fixedly connected inside each of the two second slide grooves. The frame is slidably sleeved on the surface of the two support rods. A third tension spring is sleeved on the surface of each of the two support rods. One end of each of the two third tension springs is fixedly connected to one side inside the second slide groove, and the other end of each of the two third tension springs is fixedly connected to one side of the frame.

[0009] As a further embodiment of this utility model, the limiting mechanism includes a locking groove, which is formed on one side of the cap. A locking post is slidably connected to the surface of the second nut near the locking groove, and the locking post and the locking groove are configured to cooperate with each other. A pull plate is fixedly connected to the surface of the locking post away from the locking groove, and the pull plate is slidably connected to one side of the second nut. A second tension spring is sleeved on the surface of the locking post near the pull plate. One end of the second tension spring is fixedly connected to one side of the inside of the second nut, and the other end of the second tension spring is fixedly connected to one side of the pull plate. By setting the locking post, the second nut can be limited.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model adopts a technical solution of extending the cap by using an extension cap, which ensures that the cap has a stronger adaptability. This effectively solves the problem that the length of the cap above the nut is usually not adjustable, which makes the nut unable to adapt to bolts of different lengths and limits its flexibility of use. A cap is installed on one side of the first nut, and an extension cap is installed on the other side of the cap. As the bolt continues to enter, it will contact the extension cap, and the extension cap will also move synchronously as the bolt continues to enter. Because the extension cap is connected to the cap by a first tension spring, the extension cap can be extended in length according to the specific situation of the bolt. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a sealing cap nut for a diesel engine proposed in this utility model;

[0013] Figure 2 This is a partial structural schematic diagram of a sealing cap nut for a diesel engine proposed in this utility model;

[0014] Figure 3 This is an exploded structural diagram of a sealing cap nut for a diesel engine proposed in this utility model;

[0015] Figure 4 This is a schematic diagram of the constraint mechanism of a sealing cap nut for a diesel engine proposed in this utility model;

[0016] Figure 5 for Figure 4 Enlarged structural diagram at point A in the diagram;

[0017] Figure 6 This is a schematic diagram of an adjustment mechanism for a sealing cap-shaped nut for a diesel engine proposed in this utility model;

[0018] Figure 7 for Figure 6 A magnified structural diagram at point B in the diagram.

[0019] In the diagram: 1. Bolt; 2. First nut; 3. Extension cap; 4. Second nut; 201. First slide groove; 202. Second slide groove; 203. Lock groove; 204. Cap; 301. Limiting rod; 302. First tension spring; 401. Pull plate; 402. Locking post; 403. Second tension spring; 404. Support rod; 405. Frame; 406. Third tension spring; 407. Sealing gasket; 408. Compression ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1 - Figure 7A sealing cap nut for diesel engines includes a bolt 1, a first nut 2 threadedly connected to the top of the bolt 1, a cap 204 fixedly connected to the top of the first nut 2, a first groove 201 formed on the top of the cap 204, an extension cap 3 slidably connected inside the first groove 201, a constraint mechanism for constraining the extension cap 3 inside the first groove 201, and two frames 405 symmetrically slidably connected to the top of the cap 204. Sealing gaskets 407 are fixedly connected inside the two frames 405 near the extension cap 3, and both sealing gaskets 407 are in contact with the extension cap 3. The two frames are designed to work together to seal the connection of the extension cap 3 by using the sealing gasket 407. Each frame 405 has an adjustment mechanism on one side for adjusting the sealing gasket 407. The surface of the two frames 405 away from the sealing gasket 407 is fitted with a compression ring 408. The bottom of the compression ring 408 is fixedly connected to a second nut 4. The second nut 4 is connected to the cap 204 by threads. The second nut 4 has a limiting mechanism on one side for limiting the second nut 4. The extension cap 3 design ensures that the cap 204 has a stronger adaptability.

[0022] Preferably, the constraint mechanism includes multiple limiting rods 301, all of which are slidably connected to the bottom of the extension cap 3 and are evenly arranged in a ring. The bottom ends of the multiple limiting rods 301 are fixedly connected to the inside of the first sliding groove 201. The surface of each of the multiple limiting rods 301 is fitted with a first tension spring 302, the bottom ends of the multiple first tension springs 302 are fixedly connected to the inside of the first sliding groove 201, and the top ends of the multiple first tension springs 302 are fixedly connected to the bottom of the extension cap 3. The extension cap 3 can be constrained by the setting of the first tension springs 302.

[0023] Preferably, the adjustment mechanism includes two second slide grooves 202, both of which are opened on the top of the cap 204. A support rod 404 is fixedly connected inside each of the two second slide grooves 202. A frame 405 is slidably sleeved on the surface of the two support rods 404. A third tension spring 406 is sleeved on the surface of each of the two support rods 404. One end of each of the two third tension springs 406 is fixedly connected to one side inside the second slide groove 202, and the other end of each of the two third tension springs 406 is fixedly connected to one side of the frame 405. The sealing gasket 407 can be adjusted by the setting of the third tension springs 406.

[0024] Preferably, the limiting mechanism includes a locking groove 203, which is formed on one side of the cap 204. A locking post 402 is slidably connected to the surface of the second nut 4 near the locking groove 203, and the locking post 402 and the locking groove 203 are mutually matched. A pull plate 401 is fixedly connected to the surface of the locking post 402 away from the locking groove 203, and the pull plate 401 is slidably connected to one side of the second nut 4. A second tension spring 403 is sleeved on the surface of the locking post 402 near the pull plate 401. The locking post 402 can be constrained by the second tension spring 403. One end of the second tension spring 403 is fixedly connected to one side of the inside of the second nut 4, and the other end of the second tension spring 403 is fixedly connected to one side of the pull plate 401. The second nut 4 can be limited by the locking post 402.

[0025] Working principle: In use, the first nut 2 is connected to the bolt 1, and then the first nut 2 is rotated. Rotation allows the bolt 1 to enter the interior of the first nut 2. A cap 204 is installed on one side of the first nut 2, and an extension cap 3 is installed on the other side of the cap 204. As the bolt 1 continues to enter, it contacts the extension cap 3, and the extension cap 3 moves synchronously with the bolt 1. Because the extension cap 3 is connected to the cap 204 via a first tension spring 302, the extension cap 3 can extend in length according to the specific situation of the bolt 1. After the extension cap 3 has moved completely, the second nut 4 on the surface of the cap 204 is rotated. Because the second nut 4 is connected to the cap 204 via a threaded groove, it can move upwards when rotated. Two nuts are symmetrically installed on the top of the cap 204. The frame 405, and both frames 405 cooperate with the compression ring 408 on the top of the second nut 4. Because the compression ring 408 is inclined on the side near the frame 405, when the second nut 4 moves the compression ring 408 upward, the compression ring 408 will compress the two frames 405, thereby merging them. A sealing gasket 407 is installed on the inner side of each of the two frames 405. When the two frames 405 merge, the sealing gasket 407 will also merge synchronously, and the sealing gasket 407 will also come into close contact with the extension cap 3 during the merging process to achieve the purpose of sealing the connection. A locking pin 402 is installed on one side of the second nut 4, and the locking pin 402 cooperates with the locking groove 203 on one side of the cap 204. When the second nut 4 is rotated to the designated position, the locking pin 402 will enter the locking groove 203 to achieve the purpose of restraining the second nut 4.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealed cap nut for a diesel engine comprising a bolt (1), characterized in that, The bolt (1) is threaded with a first nut (2) at the top. A cap (204) is fixedly connected to the top of the first nut (2). A first groove (201) is provided on the top of the cap (204). An extension cap (3) is slidably connected inside the first groove (201). A constraint mechanism for constraining the extension cap (3) is provided inside the first groove (201). Two frames (405) are symmetrically slidably connected to the top of the cap (204). A sealing gasket is fixedly connected inside the two frames (405) on the side near the extension cap (3). (407), both sealing gaskets (407) are configured to cooperate with the extension cap (3), and each of the two frames (405) is provided with an adjustment mechanism for adjusting the sealing gaskets (407) on one side. The surface of the two frames (405) away from the sealing gaskets (407) is fitted with a compression ring (408). The bottom of the compression ring (408) is fixedly connected to a second nut (4). The second nut (4) is connected to the cap (204) by threads. A limiting mechanism for limiting the second nut (4) is provided on one side of the second nut (4).

2. The sealed cover nut for a diesel engine according to claim 1, characterized by The constraint mechanism includes multiple limiting rods (301), all of which are slidably connected to the bottom of the extension cap (3), and the multiple limiting rods (301) are evenly arranged in a ring. The bottom ends of the multiple limiting rods (301) are fixedly connected to the inside of the first slide groove (201). The surface of the multiple limiting rods (301) is fitted with a first tension spring (302), the bottom ends of the multiple first tension springs (302) are fixedly connected to the inside of the first slide groove (201), and the top ends of the multiple first tension springs (302) are fixedly connected to the bottom of the extension cap (3).

3. The sealing cap nut for diesel engines according to claim 1, characterized in that, The adjustment mechanism includes two second slides (202), both of which are opened on the top of the cap (204). Support rods (404) are fixedly connected inside the two second slides (202), and the frame (405) is slidably sleeved on the surface of the two support rods (404).

4. The sealing cap nut for diesel engines according to claim 3, characterized in that, Both of the support rods (404) are fitted with a third tension spring (406). One end of each of the two third tension springs (406) is fixedly connected to one side of the inside of the second slide groove (202), and the other end of each of the two third tension springs (406) is fixedly connected to one side of the frame (405).

5. The sealing cap nut for diesel engines according to claim 1, characterized in that, The limiting mechanism includes a locking groove (203), which is opened on one side of the cap (204). A locking post (402) is slidably connected to the surface of the second nut (4) near the locking groove (203), and the locking post (402) and the locking groove (203) are configured to cooperate with each other. A pull plate (401) is fixedly connected to the surface of the locking post (402) away from the locking groove (203), and the pull plate (401) is slidably connected to one side of the second nut (4).

6. The sealing cap nut for diesel engines according to claim 5, characterized in that, The locking pin (402) is fitted with a second tension spring (403) on the side of the pull plate (401). One end of the second tension spring (403) is fixedly connected to the inside of the second nut (4), and the other end of the second tension spring (403) is fixedly connected to the side of the pull plate (401).

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