High-precision spliced arc-shaped pipe

Abstract

The utility model discloses a high-precision splicing type arc-shaped pipe which comprises a first arc-shaped pipe body and a second arc-shaped pipe body which are sequentially arranged, and the first arc-shaped pipe body and the second arc-shaped pipe body are connected into the arc-shaped pipe in a mortise and tenon joint mode. The first arc-shaped pipe body and the second arc-shaped pipe body are connected into the arc-shaped pipe through mortise and tenon connection, and therefore the structural strength, the connection stability and the high precision of the bending angle of the arc-shaped pipe are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of arc tubes, in particular to a high-precision spliced arc tube. Background Art

[0002] In industrial production, arc-shaped aluminum tubes are often formed by arc rolling of integrally formed aluminum tubes. However, the arc-shaped aluminum tubes obtained in this way are prone to outer wall wrinkles and inner wall shrinkage, resulting in problems such as wall thickness variation and inaccurate bending angle of the arc-shaped aluminum tubes, and cannot meet the quality requirements of arc-shaped aluminum tubes. Content of the Utility Model

[0003] To solve the technical problems in the background art, the utility model proposes a high-precision spliced arc tube.

[0004] A high-precision spliced arc tube proposed by the utility model includes: a first arc tube body and a second arc tube body arranged in sequence, and the first arc tube body and the second arc tube body are tenon-mortise connected into an arc tube.

[0005] Preferably, a plurality of first tenons are provided on the end wall of one end of the second arc tube body close to the first arc tube body, and first mortises matching the first tenons are opened at positions corresponding to the first tenons on the end wall of one end of the first arc tube body close to the second arc tube body, and each first mortise is tenon-mortise connected to the corresponding first tenon.

[0006] Preferably, the plurality of first tenons are evenly distributed circumferentially along the end of the second arc tube body close to the first arc tube body.

[0007] Preferably, a first annular protrusion is coaxially provided on the end wall of one end of the second arc tube body close to the first arc tube body, and the first tenons are all arranged on the end wall of the annular protrusion close to the first arc tube body;

[0008] An inner edge of the end wall of one end of the first arc tube body close to the second arc tube body is evenly recessed inward along the circumference to form a first annular groove for inserting and matching with the first annular protrusion, and the first annular groove communicates with the through hole of the first arc tube body to form a first stepped hole, and the first mortises are all arranged at the steps of the first stepped hole.

[0009] Preferably, the outer diameter of the first annular protrusion gradually increases in the direction from the second arc tube body to the first arc tube body.

[0010] Preferably, the first annular protrusion includes a first section and a second section connected in sequence in the direction from the second arc tube body to the first arc tube body, the outer diameter of the first section gradually increases in the direction from the second arc tube body to the first arc tube body, and the outer diameters of the second section are the same and the same as the maximum outer diameter of the first section;

[0011] The first annular groove includes a third section and a fourth section along the direction from the first arc-shaped tube body to the second arc-shaped tube body. The inner diameter of the third section gradually decreases along the direction from the first arc-shaped tube body to the second arc-shaped tube body, and the inner diameters of the fourth section are the same and the same as the minimum inner diameter of the third section. The minimum inner diameter of the third section is located between the minimum outer diameter and the maximum outer diameter of the first section.

[0012] Preferably, it further includes at least one third arc-shaped tube body for connecting the first arc-shaped tube body and the second arc-shaped tube body;

[0013] The inner edges of the end walls of the third arc-shaped tube body near the second arc-shaped tube body are all recessed inward to form a second annular groove for plugging and matching with the first annular protrusion, and the second annular groove communicates with the through hole of the third arc-shaped tube body to form a second stepped hole. Second mortises matching the first tenon are provided at the corresponding positions of the stepped surface of the second stepped hole and the first tenon;

[0014] Second annular protrusions for plugging and matching with the first annular groove are provided on the end walls of the third arc-shaped tube body near the first arc-shaped tube body, and second tenons matching the first mortise are provided at the corresponding positions of the second annular protrusion and the first mortise;

[0015] When the number of the third arc-shaped tube bodies is 1, the first arc-shaped tube body, the third arc-shaped tube body and the second arc-shaped tube body are sequentially connected by mortise and tenon joints of the first mortise and the second tenon, and the second mortise and the first tenon to form an arc-shaped tube;

[0016] When the number of the third arc-shaped tube bodies is multiple, the first arc-shaped tube body, multiple third arc-shaped tube bodies and the second arc-shaped tube body are sequentially connected by mortise and tenon joints of the first mortise and the second tenon, the second mortise and the second tenon, and the second mortise and the first tenon to form an arc-shaped tube.

[0017] Preferably, it further includes at least one third arc-shaped tube body for connecting the first arc-shaped tube body and the second arc-shaped tube body;

[0018] Second tenons matching the first mortise are provided at the corresponding positions of the end walls of the third arc-shaped tube body near the first arc-shaped tube body and the first mortise, and second mortises matching the first tenon are provided at the corresponding positions of the end walls of the third arc-shaped tube body near the second arc-shaped tube body and the first tenon;

[0019] When the number of the third arc-shaped tube bodies is 1, the first arc-shaped tube body, the third arc-shaped tube body and the second arc-shaped tube body are sequentially connected by mortise and tenon joints of the first mortise and the second tenon, and the second mortise and the first tenon to form an arc-shaped tube;

[0020] When the number of the third arc-shaped tube bodies is multiple, the first arc-shaped tube body, multiple third arc-shaped tube bodies and the second arc-shaped tube body are sequentially connected by mortise and tenon joints of the first mortise and the second tenon, the second mortise and the second tenon, and the second mortise and the first tenon to form an arc-shaped tube.

[0021] Preferably, all the arc-shaped pipe bodies are made of aluminum material.

[0022] Preferably, the first tenon is a dovetail tenon.

[0023] In the present utility model, the proposed high-precision spliced arc-shaped pipe connects the first arc-shaped pipe body and the second arc-shaped pipe body into an arc-shaped pipe through the mortise and tenon connection of a plurality of first mortises and a plurality of first tenons in a one-to-one correspondence, thereby ensuring the structural strength, connection stability and high precision of the bending angle of the arc-shaped pipe, and avoiding problems such as wall thickness change and inaccurate bending angle caused by arc roll bending. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the arc-shaped pipe in an embodiment proposed by the present utility model.

[0025] Figure 2 It is a schematic cross-sectional view of the high-precision spliced arc-shaped pipe in an embodiment proposed by the present utility model.

[0026] Figure 3 It is Figure 2 the enlarged schematic view of part A in

[0027] Figure 4 It is a schematic structural diagram of the first annular protrusion in an embodiment proposed by the present utility model.

[0028] Figure 5 It is a schematic structural diagram of the third arc-shaped pipe body in an embodiment proposed by the present utility model.

[0029] Figure 6 It is a schematic structural diagram of the arc-shaped pipe in another embodiment proposed by the present utility model. Detailed Embodiment

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] Referring to Figures 1-4 , a high-precision spliced arc-shaped pipe proposed by the present utility model includes: a first arc-shaped pipe body 1 and a second arc-shaped pipe body 2 arranged in sequence, and the first arc-shaped pipe body 1 and the second arc-shaped pipe body 2 are connected into an arc-shaped pipe through mortise and tenon connection.

[0032] In the present utility model, the first arc-shaped tube body 1 and the second arc-shaped tube body 2 are connected by mortise and tenon joints, thereby ensuring the structural strength, connection stability and high precision of the bending angle of the arc-shaped tube formed by connecting the first arc-shaped tube body 1 and the second arc-shaped tube body 2, and avoiding problems such as wall thickness change and inaccurate bending angle caused by arc roll forming.

[0033] In one specific embodiment, a plurality of first tenons 22 are provided on the end wall of one end of the second arc-shaped tube body 2 close to the first arc-shaped tube body 1.

[0034] At the corresponding positions on the end wall of one end of the first arc-shaped tube body 1 close to the second arc-shaped tube body 2, first mortise holes matching the first tenons 22 are opened, and each first mortise hole is connected with the corresponding first tenon 22 by mortise and tenon joints, so that the first arc-shaped tube body 1 and the second arc-shaped tube body 2 are connected into an arc-shaped tube.

[0035] In this embodiment, the first arc-shaped tube body 1 and the second arc-shaped tube body 2 are connected by mortise and tenon joints through a plurality of first mortise holes and a plurality of first tenons 22 in a one-to-one correspondence, thereby ensuring the structural strength, connection stability and high precision of the bending angle of the arc-shaped tube formed by connecting the first arc-shaped tube body 1 and the second arc-shaped tube body 2.

[0036] It should be noted that the inner diameters and outer diameters of the first arc-shaped tube body 1 and the second arc-shaped tube body 2 in this embodiment are the same.

[0037] In this embodiment, the plurality of first tenons 22 are evenly distributed circumferentially along the end of the second arc-shaped tube body 2 close to the first arc-shaped tube body 1 to ensure the connection stability, thereby ensuring the accurate bending angle of the arc-shaped tube after connection.

[0038] In order to further ensure the connection stability, in this embodiment, a first annular protrusion 21 is coaxially provided on the end wall of one end of the second arc-shaped tube body 2 close to the first arc-shaped tube body 1, and the first tenons 22 are all arranged on the end wall of the annular protrusion close to the first arc-shaped tube body 1.

[0039] The inner edge of the end wall of one end of the first arc-shaped tube body 1 close to the second arc-shaped tube body 2 is evenly recessed inward along the circumference to form a first annular groove for plugging and matching with the first annular protrusion 21, and the first annular groove is communicated with the through hole of the first arc-shaped tube body 1 to form a first stepped hole, and the first mortise holes are all arranged at the steps of the first stepped hole.

[0040] In order to ensure the strength after the assembly of the first annular protrusion 21 and the first annular groove, in a further embodiment, the outer diameter of the first annular protrusion 21 gradually increases in the direction from the second arc-shaped tube body 2 to the first arc-shaped tube body 1.

[0041] However, the assembled structure has high strength but may not be convenient for assembly. To further facilitate the assembly of the first annular protrusion 21 and the first annular groove, in a further embodiment, the first annular protrusion 21 includes a first section 211 and a second section 212 that are sequentially connected along the direction from the second arc-shaped tube body 2 to the first arc-shaped tube body 1. The outer diameter of the first section 211 gradually increases along the direction from the second arc-shaped tube body 2 to the first arc-shaped tube body 1, and the outer diameter of the second section 212 is the same and is the same as the maximum outer diameter of the first section 211;

[0042] The first annular groove includes a third section and a fourth section along the direction from the first arc-shaped tube body 1 to the second arc-shaped tube body 2. The inner diameter of the third section gradually decreases along the direction from the first arc-shaped tube body 1 to the second arc-shaped tube body 2, and the inner diameter of the fourth section is the same and is the same as the minimum inner diameter of the third section; The minimum inner diameter of the third section is between the minimum outer diameter and the maximum outer diameter of the first section 211.

[0043] In this embodiment, it further includes at least one third arc-shaped tube body 3 for connecting the first arc-shaped tube body 1 and the second arc-shaped tube body 2;

[0044] On the end wall of the end of the third arc-shaped tube body 3 close to the first arc-shaped tube body 1, at the positions corresponding to the first mortises, second tenons matching the first mortises are provided. On the end wall of the end of the third arc-shaped tube body 3 close to the second arc-shaped tube body 2, at the positions corresponding to the first tenons 22, second mortises matching the first tenons 22 are provided;

[0045] When the number of the third arc-shaped tube bodies 3 is 1, the first arc-shaped tube body 1, the third arc-shaped tube body 3, and the second arc-shaped tube body 2 are sequentially connected by mortise and tenon joints of the first mortises and the second tenons, and the second mortises and the first tenons 22 to form an arc-shaped tube;

[0046] When the number of the third arc-shaped tube bodies 3 is multiple, the first arc-shaped tube body 1, the multiple third arc-shaped tube bodies 3, and the second arc-shaped tube body 2 are sequentially connected by mortise and tenon joints of the first mortises and the second tenons, the second mortises and the second tenons, and the second mortises and the first tenons 22 to form an arc-shaped tube.

[0047] With such a setting in this embodiment, it can ensure the high precision and stability of the arc-shaped tube formed after connecting the first arc-shaped tube body 1, at least one third arc-shaped tube body 3, and the second arc-shaped tube body 2.

[0048] Refer to Figure 5 and Figure 6 , in another embodiment, it further includes at least one third arc-shaped tube body 3 for connecting the first arc-shaped tube body 1 and the second arc-shaped tube body 2;

[0049] The inner edges of the end walls of one ends of the third arc-shaped pipe bodies 3 close to the second arc-shaped pipe bodies 2 are all recessed inward to form second annular grooves for plugging and matching with the first annular protrusions 21, and the second annular grooves communicate with the through holes of the third arc-shaped pipe bodies 3 to form second stepped holes. Second mortises matching the first tenons 22 are provided at the positions corresponding to the stepped surfaces of the second stepped holes;

[0050] Second annular protrusions 31 for plugging and matching with the first annular grooves are provided on the end walls of one ends of the third arc-shaped pipe bodies 3 close to the first arc-shaped pipe bodies 1, and second tenons matching the first mortises are provided at the positions corresponding to the first mortises on the second annular protrusions 31;

[0051] When the number of the third arc-shaped pipe bodies 3 is 1, the first arc-shaped pipe body 1, the third arc-shaped pipe body 3 and the second arc-shaped pipe body 2 are sequentially connected by tenon-mortise joints of the first mortises and the second tenons and the second mortises and the first tenons 22 to form an arc-shaped pipe;

[0052] When the number of the third arc-shaped pipe bodies 3 is multiple, the first arc-shaped pipe body 1, the multiple third arc-shaped pipe bodies 3 and the second arc-shaped pipe body 2 are sequentially connected by tenon-mortise joints of the first mortises and the second tenons, the second mortises and the second tenons and the second mortises and the first tenons 22 to form an arc-shaped pipe.

[0053] With such a setting in this embodiment, the high precision and stability of the arc-shaped pipe formed after the connection of the first arc-shaped pipe body 1, at least one third arc-shaped pipe body 3 and the second arc-shaped pipe body 2 can be ensured.

[0054] It should be noted that the inner diameters and outer diameters of the first arc-shaped pipe body 1, the third arc-shaped pipe body 3 and the second arc-shaped pipe body 2 in this embodiment are all the same.

[0055] In this embodiment, all the arc-shaped pipe bodies are made of aluminum material.

[0056] In one of the embodiments, the first tenon 22 is a dovetail tenon.

[0057] In another embodiment, the first tenon 22 is a notch tenon, a rabbet joint, a through-tenon or a dowel joint.

[0058] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A high-precision spliced ​​arc tube, characterized in that: include: A first arc-shaped tube body (1) and a second arc-shaped tube body (2) are arranged in sequence, and the first arc-shaped tube body (1) and the second arc-shaped tube body (2) are connected by mortise and tenon joints to form an arc-shaped tube; A plurality of first tenons (22) are provided on an end wall of the second arc-shaped tube body (2) close to the first arc-shaped tube body (1); first mortises matching the first tenons (22) are provided at positions corresponding to the first tenons (22) on an end wall of the first arc-shaped tube body (1) close to the second arc-shaped tube body (2); and each first mortise is mortise-joined with a corresponding first tenon (22); A plurality of first tenons (22) are evenly distributed along the circumference of one end of the second arc-shaped tube (2) close to the first arc-shaped tube (1); A first annular protrusion (21) is coaxially arranged on an end wall of the second arc-shaped tube body (2) close to the first arc-shaped tube body (1), and the first tenon (22) is arranged on an end wall of the annular protrusion close to the first arc-shaped tube body (1); The inner edge of the end wall of the first arc-shaped tube body (1) close to the second arc-shaped tube body (2) is uniformly recessed inward along the circumferential direction to form a first annular groove for plugging and matching with the first annular protrusion (21), and the first annular groove is connected with the through hole of the first arc-shaped tube body (1) to form a first stepped hole, and the first mortise is arranged at the step of the first stepped hole.

2. The high-precision spliced ​​arc tube according to claim 1 is characterized in that: The outer diameter of the first annular protrusion (21) gradually increases along the direction from the second arc-shaped tube body (2) to the first arc-shaped tube body (1).

3. The high-precision spliced ​​arc tube according to claim 2 is characterized in that: The first annular protrusion (21) comprises a first section (211) and a second section (212) which are sequentially connected along the direction from the second arc-shaped tube body (2) to the first arc-shaped tube body (1); the outer diameter of the first section (211) gradually increases along the direction from the second arc-shaped tube body (2) to the first arc-shaped tube body (1); the outer diameter of the second section (212) is the same and has the same maximum outer diameter as the first section (211); The first annular groove comprises a third section and a fourth section along the direction from the first arc-shaped tube body (1) to the second arc-shaped tube body (2); the inner diameter of the third section gradually decreases along the direction from the first arc-shaped tube body (1) to the second arc-shaped tube body (2); the inner diameter of the fourth section is the same and is the same as the minimum inner diameter of the third section; the minimum inner diameter of the third section is between the minimum outer diameter and the maximum outer diameter of the first section (211).

4. The high-precision spliced ​​arc tube according to any one of claims 1 to 3, characterized in that: It also includes at least one third arc-shaped tube body (3) used to connect the first arc-shaped tube body (1) and the second arc-shaped tube body (2); The inner edge of the end wall of the third arc-shaped tube body (3) close to the second arc-shaped tube body (2) is recessed inward to form a second annular groove for plugging and matching with the first annular protrusion (21), and the second annular groove is connected with the through hole of the third arc-shaped tube body (3) to form a second stepped hole, and the step surface of the second stepped hole and the corresponding position of the first tenon (22) are provided with a second mortise that matches the first tenon (22); A second annular protrusion (31) is provided on the end wall of the third arc-shaped tube body (3) close to the first arc-shaped tube body (1) and is plugged into and matched with the first annular groove; a second tenon is provided at the corresponding position of the second annular protrusion (31) and the first mortise and tenon and is matched with the first mortise and tenon; When the number of the third arc-shaped tube body (3) is one, the first arc-shaped tube body (1), the third arc-shaped tube body (3) and the second arc-shaped tube body (2) are connected in sequence through the mortise and tenon connection of the first mortise and the second tenon and the second mortise and the first tenon (22) to form an arc-shaped tube; When the number of the third arc-shaped tube bodies (3) is plural, the first arc-shaped tube body (1), the plurality of third arc-shaped tube bodies (3) and the second arc-shaped tube body (2) are connected in sequence through the mortise and tenon connection of the first mortise and the second tenon, the second mortise and the second tenon, and the second mortise and the first tenon (22) to form an arc-shaped tube.

5. The high-precision spliced ​​arc tube according to claim 1, characterized in that: It also includes at least one third arc-shaped tube body (3) used to connect the first arc-shaped tube body (1) and the second arc-shaped tube body (2); A second tenon matching the first tenon is provided on the end wall of one end of the third arc-shaped tube (3) close to the first arc-shaped tube (1) at a position corresponding to the first tenon, and a second tenon matching the first tenon (22) is provided on the end wall of one end of the third arc-shaped tube (3) close to the second arc-shaped tube (2) at a position corresponding to the first tenon (22); When the number of the third arc-shaped tube body (3) is one, the first arc-shaped tube body (1), the third arc-shaped tube body (3) and the second arc-shaped tube body (2) are connected in sequence through the mortise and tenon connection of the first mortise and the second tenon and the second mortise and the first tenon (22) to form an arc-shaped tube; When the number of the third arc-shaped tube bodies (3) is plural, the first arc-shaped tube body (1), the plurality of third arc-shaped tube bodies (3) and the second arc-shaped tube body (2) are connected in sequence through the mortise and tenon connection of the first mortise and the second tenon, the second mortise and the second tenon, and the second mortise and the first tenon (22) to form an arc-shaped tube.

6. The high-precision spliced ​​arc tube according to claim 1, characterized in that: The first tenon (22) is a dovetail tenon.

7. The high-precision spliced ​​arc tube according to claim 1, characterized in that: All curved tubes are made of aluminum.

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