Mechanical coupling connection device
By adopting a split structure of the female connecting seat and insert, the problems of difficult and insufficient hardness of the female coupling body in the prior art are solved, and higher accuracy and hardness are achieved, and the performance of the coupling body is improved.
Patent Information
- Application Number
- CN202421878078.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, the overall structure of the parent coupling body makes it difficult to process, the accuracy and hardness of the coupling slope are difficult to ensure, and the hardness cannot be improved through surface heat treatment.
The split structure of the female connecting seat and the insert is adopted. The coupling bevel is located on the insert and is fixed by bolts and cylindrical pins to achieve mechanical coupling and connectivity, and the hardness of the insert is enhanced by surface heat treatment.
It reduces the processing difficulty of the inner cavity of the female connecting seat, improves the manufacturing accuracy and hardness, and improves the performance of the coupling body.
Smart Images
Figure CN222894477U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of contact line joint fixing, and in particular relates to a mechanical coupling connection device. Background Art
[0002] The coupling connection device is usually composed of a male coupling body and a female coupling body, and is used in pairs. Among them, the female coupling body has a wedge-shaped cavity, and the bottom surface of the wedge-shaped cavity is a plane, and the top surface is an inclined surface that forms a certain angle with the horizontal plane; the bottom of the male coupling body has a wedge-shaped structure, and the top surface of the wedge-shaped structure is an inclined surface, and the bottom surface is a plane. When in use, the wedge-shaped structure is inserted into the wedge-shaped cavity, and the two inclined surfaces are pushed by external force to fully engage to achieve mechanical coupling connection. During the coupling process, due to the large force, the inclined surface is required to have high precision and high hardness. The female coupling body in the prior art is usually an integral structure, which is difficult to machine, and the roughness of the coupling inclined surface is not easy to guarantee, and the hardness of the coupling inclined surface cannot be improved by surface heat treatment. Summary of the invention
[0003] The utility model provides a mechanical coupling connection device to overcome the deficiencies of the prior art.
[0004] The technical scheme adopted by the utility model is: a mechanical coupling connection device, comprising a male coupling body and a female coupling body, the bottom two sides of the male coupling body are symmetrical wedge-shaped structures, the top surface of the wedge-shaped structure is an inclined surface, and the bottom surface is a plane; the female coupling body comprises a female connection seat and an inlay, the upper end surface of the female connection seat has a sink groove, one end of the sink groove extends with a rectangular inner cavity that penetrates the sink groove, and the middle of the top of the rectangular inner cavity has a strip notch; two inlays are fixed side by side in the rectangular inner cavity, and the inlays are symmetrically arranged on both sides of the strip notch; the upper end surface of the inlay is a plane and fits with the top surface of the rectangular inner cavity, and the lower end surface of the inlay is an inclined surface, so that two symmetrical wedge-shaped cavities are formed between the lower end surfaces of the two inlays and the bottom surface of the rectangular inner cavity, and the large ends of the wedge-shaped cavities are connected with the sink groove; the wedge structures are inserted into the two wedge-shaped cavities from the sink groove to realize mechanical coupling connection.
[0005] A plurality of threaded holes and a first pin hole are horizontally arranged on the insert, and through holes and a second pin hole are correspondingly arranged on both sides of the top of the rectangular inner cavity. The insert is fixed on both sides of the top of the rectangular inner cavity by bolts passing through the through holes and threadedly connected with the threaded holes, and cylindrical pins passing through the first pin holes and the second pin holes.
[0006] The hardness of the inclined surface on the insert is greater than 55HRC.
[0007] The top surface of the wedge-shaped structure and the lower end surface of the insert are both inclined surfaces with an angle of 2-4 degrees.
[0008] Compared with the prior art, the utility model has the beneficial effect that the female coupling body is assembled from a female connecting seat and an insert, and the coupling bevel is located on the insert, which not only reduces the difficulty of processing the inner cavity of the female connecting seat, but also facilitates improving the hardness of the coupling bevel through surface heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic cross-sectional view of the structure of the utility model;
[0010] Figure 2 This is a schematic diagram of the structure of the female coupling body of the utility model;
[0011] Figure 3 It is a schematic cross-sectional view of the structure of the female coupling body of the utility model;
[0012] Figure 4 This is a schematic diagram of the structure of the female connector of the utility model;
[0013] Figure 5 This is a schematic diagram of the insert structure of the utility model;
[0014] Figure 6 It is a schematic diagram of the structure of the male coupling body of the utility model. DETAILED DESCRIPTION
[0015] The following is combined with Figure 1-6 The utility model is described in detail with specific implementation modes.
[0016] A mechanical coupling connection device, comprising a male coupling body 1 and a female coupling body, wherein the male coupling body 1 has symmetrical wedge-shaped structures 1-1 on both sides of its bottom, wherein the top surface of the wedge-shaped structure 1-1 is an inclined surface and the bottom surface is a plane; the female coupling body comprises a female connection seat 2 and an insert 3, wherein the upper end surface of the female connection seat 2 has a sinking groove 2-1, wherein one end of the sinking groove 2-1 extends to a rectangular inner cavity 2-2 which is connected to the sinking groove 2-1, wherein the top of the rectangular inner cavity 2-2 has a strip-shaped notch 2-3; wherein the rectangular inner cavity 2-2 has a strip-shaped notch 2-3 which is connected to the upper end surface of the female connection seat 2 and an insert 3; wherein the upper end surface of the female connection seat 2 has a sinking groove 2-1, wherein a rectangular inner cavity 2-2 which is connected to the sinking groove 2-1 is provided to the upper end surface of the female connection seat 2 and ... Two inserts 3 are fixed side by side in the cavity 2-2, and the inserts 3 are symmetrically arranged on both sides of the strip notch 2-3; the upper end faces of the inserts 3 are flat and fit with the top surface of the rectangular inner cavity 2-2, and the lower end faces of the inserts 3 are inclined, so that two symmetrical wedge-shaped cavities 4 are formed between the lower end faces of the two inserts 3 and the bottom surface of the rectangular inner cavity 2-2, and the large ends of the wedge-shaped cavities 4 are connected to the sink 2-1; the wedge-shaped structure 1-1 is inserted from the sink 2-1 into the two wedge-shaped cavities 4 respectively to realize mechanical coupling connection.
[0017] Furthermore, a plurality of threaded holes 3-1 and a first pin hole 3-2 are horizontally arranged on the insert 3, and through holes 2-4 and second pin holes 2-5 are correspondingly arranged on both sides of the top of the rectangular inner cavity 2-2. Bolts 5 pass through the through holes 2-4 and are threadedly connected to the threaded holes 3-1, and cylindrical pins 6 are inserted into the first pin holes 3-2 and the second pin holes 2-5 to fix the insert 3 on both sides of the top of the rectangular inner cavity 2-2.
[0018] Preferably, the top surface of the wedge-shaped structure 1-1 and the lower end surface of the insert 3 are both inclined surfaces with an angle of 2-4 degrees.
[0019] The female coupling body of the utility model adopts a split structure composed of a female connecting seat and an insert, which overcomes the process difficulties of the existing integral structure of the female coupling body, such as the difficulty in machining the inner cavity coupling slope, low precision, difficulty in ensuring roughness, and inability to harden.
[0020] The design of the female connector 2 is as follows Figure 4 As shown, the top surface of the rectangular inner cavity 2-2 is parallel to the upper surface, and there is no inclined surface. The processing can be completed using an inner cavity plane milling tool, and even CNC programming is not required.
[0021] Insert 3 is designed as Figure 5 As shown, the lower end surface is preferably a 3° coupling bevel, and the surface roughness of the coupling bevel is required to be less than 3.2um, which can reduce the friction resistance during coupling. After surface heat treatment, the coupling bevel has a hardness greater than 55HRC and a hardened layer depth of 0.5-1mm, which can greatly improve wear resistance.
[0022] It can be seen that the utility model not only reduces the manufacturing difficulty of the female coupling body, but also improves the manufacturing accuracy of the female coupling body, thereby achieving performance improvement of the female coupling body.
[0023] In one embodiment, the male coupling body 1 is as follows Figure 6 As shown, the structure is approximately inverted T-shaped, and the top surface of the wedge-shaped structure 1-1 is preferably a 3° slope, and the surface roughness of the slope is required to be less than 3.2um, which can reduce the friction resistance during coupling. The slope is subjected to surface heat treatment, and the hardening requirements are the same as those of the insert 3.
[0024] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A mechanical coupling connection device, comprising a male coupling body (1) and a female coupling body, wherein the bottom of the male coupling body (1) has symmetrical wedge-shaped structures (1-1) on both sides, and the top surface of the wedge-shaped structure (1-1) is an inclined surface and the bottom surface is a flat surface; characterized in that: The female coupling body comprises a female connection seat (2) and an insert (3); the upper end surface of the female connection seat (2) has a recessed groove (2-1); one end of the recessed groove (2-1) extends to have a rectangular inner cavity (2-2) that is in communication with the recessed groove (2-1); the top of the rectangular inner cavity (2-2) has a strip-shaped notch (2-3); two inserts (3) are fixed side by side in the rectangular inner cavity (2-2), and the inserts (3) are symmetrically arranged in the strip-shaped notch (2-3). two sides; the upper end surface of the insert (3) is a plane and fits with the top surface of the rectangular inner cavity (2-2); the lower end surface of the insert (3) is an inclined surface, so that two symmetrical wedge-shaped cavities (4) are formed between the lower end surfaces of the two inserts (3) and the bottom surface of the rectangular inner cavity (2-2), and the large ends of the wedge-shaped cavities (4) are connected to the sink groove (2-1); the wedge-shaped structure (1-1) is inserted from the sink groove (2-1) into the two wedge-shaped cavities (4) respectively to realize mechanical coupling connection.
2. The mechanical coupling connection device according to claim 1, characterized in that: The insert (3) is horizontally provided with a plurality of threaded holes (3-1) and a first pin hole (3-2); the top two sides of the rectangular inner cavity (2-2) are correspondingly provided with through holes (2-4) and second pin holes (2-5); the insert (3) is fixed to the top two sides of the rectangular inner cavity (2-2) by means of bolts (5) passing through the through holes (2-4) and being threadedly connected with the threaded holes (3-1); and cylindrical pins (6) passing through the first pin holes (3-2) and the second pin holes (2-5).
3. The mechanical coupling connection device according to claim 1 or 2, characterized in that: The hardness of the inclined surface on the insert (3) is greater than 55HRC.
4. The mechanical coupling connection device according to claim 3, characterized in that: The top surface of the wedge-shaped structure (1-1) and the lower end surface of the insert (3) are both inclined surfaces with an angle of 2-4°.