Rubber tube assembly

Abstract

The utility model relates to the technical field of rubber pipes, in particular to a rubber pipe assembly which comprises a connecting pipe, outer sleeves are inserted into the two ends of the connecting pipe, nut caps are arranged at the joints of the connecting pipe and the outer sleeves, a wear-resistant inner container is arranged on the inner wall of the connecting pipe, arc-shaped grooves are formed in the inner wall of a lantern ring, positioning balls are arranged in the arc-shaped grooves, and springs are arranged at the bottoms of the positioning balls. The outer wall of the connecting pipe is further sleeved with a heat preservation sleeve, a threaded ring is arranged at the end, corresponding to the connecting pipe, of the outer sleeve, and a positioning groove is formed in the tail end of the guide groove. According to the rubber tube assembly, the two outer sleeves and the connecting tube are combined and installed, the junctions of the outer sleeves and the connecting tube are installed and fixed through the nut caps and the threaded rings, the connecting tube is matched with the positioning balls and the springs, and the positioning balls and the positioning grooves are matched in an inserted mode, preliminary fixing of the outer sleeves and the connecting tube is achieved, and under cooperation of the rubber rings, the sealing performance of the junctions is improved; the protruding blocks are matched with the grooves in an inserted mode, and rapid inserted matching of the connecting pipe and the outer sleeve is increased.

Description

Technical Field

[0001] This utility model relates to the field of hose technology, specifically a hose assembly. Background Technology

[0002] Hose assemblies are a common auxiliary device in hydraulic systems. They are made of high-pressure steel wire braided or wound hoses and steel fittings, crimped together by special equipment, and used to connect various hydraulic components in the hydraulic system.

[0003] The utility model with announcement number CN221402136U discloses a clamp-type hose assembly, which includes a hose, a fixing sleeve inner sleeve, and a tensioning component.

[0004] The above technical solution involves a hose with an inner sleeve inserted inside and a fixing sleeve fitted outside. One end of the fixing sleeve has an opening groove, allowing for easy fitting of the fixing sleeve onto the outside of the hose. After the fixing sleeve is in place, a tensioning component can tighten the opening groove, reducing the inner diameter of the end of the fixing sleeve with the opening groove and pressing the hose tightly against the inner sleeve. During on-site installation, the inner and outer sleeves can be removed from the hose ends by loosening the tensioning component, and the hose can be cut to the required dimensions before being reconnected. However, the installation of the hose ends does not increase the tightness of the connection, reducing leakage at the pipe openings while facilitating quick installation. Furthermore, in low-temperature environments, it does not reduce the risk of freezing damage to the internal liquid caused by the external environment. Utility Model Content

[0005] The purpose of this invention is to provide a hose assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hose assembly includes a connecting tube, with outer tubes inserted at both ends. A nut is provided at the connection between the connecting tube and the outer tube. A wear-resistant inner liner is provided on the inner wall of the connecting tube. A collar is provided on the outer wall of the connecting tube near both ends, with an arc-shaped groove on its inner wall. Circular grooves are symmetrically formed on the outer walls of both ends of the connecting tube, each containing a positioning ball with a spring at its bottom. Grooves are also symmetrically formed on the outer wall of the connecting tube. An insulation sleeve is also fitted onto the outer wall of the connecting tube. A threaded ring is provided at one end of the outer tube corresponding to the connecting tube. An annular groove is formed on the outer wall of the outer tube corresponding to the arc-shaped groove, containing a rubber ring. An installation groove is formed on the inner wall of the outer tube, with a protrusion corresponding to the groove on its inner wall. A guide groove is formed on the inner wall of the installation groove corresponding to the positioning ball, and a positioning groove is formed at the end of the guide groove.

[0008] Furthermore, the hollow area between the inner and outer walls of the connecting pipe is a sandwich layer, the sandwich layer is vacuumed, the outer wall of the wear-resistant inner liner is bonded and fixed to the connecting pipe, and the length of the wear-resistant inner liner is adapted to the length of the connecting pipe.

[0009] In this invention, the interlayer reduces the impact of external environmental temperature changes on the internally transported liquid, and the wear-resistant inner liner reduces the erosion of the inner wall of the connecting pipe by the transported liquid.

[0010] Specifically, the collar is welded and fixed to the connecting pipe, the distance between the two collars is adapted to the length of the outer wall of the insulation sleeve, and the inner wall of the insulation sleeve is bonded and fixed to the outer wall of the connecting pipe.

[0011] In this invention, the collar helps to define the position of the insulation sleeve during installation, and also restricts the range of movement of the nut cap, thereby facilitating the combination and fixing of the connecting pipe and the outer sleeve.

[0012] It should be noted that movable grooves are provided at both ends of the outer wall of the insulation sleeve, and a through groove is provided at the end of the nut cap. The inner diameter of the through groove is adapted to the outer diameter of the movable groove. Several anti-slip posts are provided on the outer wall of the nut cap. The anti-slip posts are distributed in a ring at equal intervals. The anti-slip posts and the nut cap are integrally formed.

[0013] In this invention, the through groove and the movable groove slide together, which facilitates the movement of the nut cap on the end of the insulation sleeve. With the cooperation of multiple anti-slip posts, the contact area is increased, thereby increasing the friction.

[0014] Furthermore, the outer diameter of the positioning ball is adapted to the inner diameter of the circular groove, one end of the spring is bonded and fixed to the bottom of the positioning ball, and the other end is bonded and fixed to the bottom of the circular groove.

[0015] In this invention, the spring has elasticity and, with the cooperation of the circular groove, restricts the stable up-and-down movement of the positioning ball. During the process of inserting the connecting tube into the outer tube, the positioning ball is squeezed and stored in the circular groove, which helps to make sliding insertion and engagement.

[0016] Specifically, the threaded ring and the outer sleeve are integrally formed, the nut cap is inserted into the collar, and the nut cap passes through the collar and is threadedly connected to the threaded ring.

[0017] In this invention, the nut cap and threaded ring are threaded together to achieve a stable combination and installation of the outer sleeve and the connecting pipe, thereby increasing the stability of the installation.

[0018] Secondly, the rubber ring is engaged with the annular groove, and the outer wall of the rubber ring is engaged with the arc-shaped groove.

[0019] In this invention, the rubber ring, which connects the annular groove and the arc groove, increases the tightness of the combination between the collar and the outer sleeve, reducing the impact of leakage at the connection.

[0020] It is worth adding that the outer diameter of the connecting pipe is adapted to the inner diameter of the mounting groove, the width of the outer wall of the protrusion is adapted to the width of the inner wall of the groove, the positioning ball is slidably engaged with the guide groove, and the positioning ball is inserted into the positioning groove.

[0021] In this invention, the protrusion and groove are inserted and matched to increase the stability of the connection between the connecting tube and the outer tube. With the cooperation of the guide groove, the positioning ball slides from the guide groove into the positioning groove, which increases the stability of the connection between the connecting tube and the outer tube. The positioning ball is locked in the positioning groove and, under the action of friction, fixes the connecting tube and the outer tube.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. This utility model is constructed by assembling two outer sleeves and a connecting pipe. The junction of the outer sleeve and the connecting pipe is fixed by a nut and a threaded ring. The outer ends of the two outer sleeves are welded to the corresponding pipes. The connecting pipe is fitted with a positioning ball and a spring. The positioning ball and the positioning groove are inserted into each other to achieve initial fixation of the outer sleeve and the connecting pipe. With the help of the rubber ring, the sealing at the junction of the outer sleeve and the connecting pipe is increased, reducing the impact of leakage. The protrusion and the groove are inserted into each other to increase the quick insertion and connection of the connecting pipe and the outer sleeve.

[0024] 2. By setting up a sandwich layer, this utility model increases the resistance of the liquid transported inside the connecting pipe to temperature changes in the external environment. In addition, an insulation sleeve is provided on the outer wall of the connecting pipe to increase the insulation performance of the inside of the connecting pipe, reducing the impact of low temperature in the external environment on the internal liquid transport. With the cooperation of the wear-resistant inner liner, it helps to reduce the corrosive effect of the transported liquid on the inside of the connecting pipe. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram showing the connection tube and outer sleeve of this utility model in a separated state;

[0027] Figure 3 This is a schematic diagram of the outer sleeve structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the exploded structure of the connecting pipe of this utility model;

[0029] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Connecting pipe; 10. Collar; 100. Arc groove; 11. Groove; 12. Circular groove; 13. Positioning ball; 130. Spring; 14. Insulation sleeve; 140. Movable groove; 15. Interlayer; 16. Wear-resistant inner liner;

[0032] 2. Outer sleeve; 20. Threaded ring; 21. Mounting groove; 210. Protrusion; 22. Guide groove; 220. Positioning groove; 23. Annular groove; 230. Rubber ring;

[0033] 3. Nut cap; 30. Anti-slip post; 31. Through groove. Detailed Implementation

[0034] 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.

[0035] Please see Figures 1-5 This embodiment provides a technical solution:

[0036] A hose assembly includes a connecting tube 1, with outer sleeves 2 inserted at both ends of the connecting tube 1. A nut cap 3 is provided at the connection between the connecting tube 1 and the outer sleeve 2. A wear-resistant inner liner 16 is provided on the inner wall of the connecting tube 1. The hollow area between the inner wall and the outer wall of the connecting tube 1 is a sandwich 15. The sandwich 15 is vacuumed. The outer wall of the wear-resistant inner liner 16 is bonded and fixed to the connecting tube 1. The length of the wear-resistant inner liner 16 is adapted to the length of the connecting tube 1.

[0037] In this invention, the interlayer 15 reduces the impact of external environmental temperature changes on the internally transported liquid, and the wear-resistant inner liner 16 reduces the impact of the transported liquid on the inner wall of the connecting pipe 1.

[0038] Furthermore, a collar 10 is provided on the outer wall of the connecting pipe 1 near both ends. The collar 10 is welded and fixed to the connecting pipe 1. The distance between the two collars 10 is adapted to the length of the outer wall of the insulation sleeve 14. The inner wall of the insulation sleeve 14 is bonded and fixed to the outer wall of the connecting pipe 1.

[0039] In this utility model, with the cooperation of the collar 10, the position of the insulation sleeve 14 is limited, and the collar 10 restricts the range of movement of the nut cap 3, thereby facilitating the combination and fixing of the connecting pipe 1 and the outer sleeve 2.

[0040] Specifically, an arc-shaped groove 100 is provided on the inner wall of the collar 10, and circular grooves 12 are symmetrically provided on the outer walls of both ends of the connecting pipe 1. Each circular groove 12 is provided with a positioning ball 13, and a spring 130 is provided at the bottom of the positioning ball 13. The outer diameter of the positioning ball 13 is adapted to the inner diameter of the circular groove 12. One end of the spring 130 is bonded and fixed to the bottom of the positioning ball 13, and the other end is bonded and fixed to the bottom of the circular groove 12.

[0041] In this invention, the spring 130 has elasticity and, with the cooperation of the circular groove 12, restricts the stable up-and-down movement of the positioning ball 13. During the process of inserting the connecting tube 1 into the outer sleeve 2, the positioning ball 13 is squeezed and stored in the circular groove 12, which helps to make sliding insertion and engagement.

[0042] It should be noted that grooves 11 are symmetrically provided on the outer wall of the connecting pipe 1, and an insulation sleeve 14 is also provided on the outer wall of the connecting pipe 1. Movable grooves 140 are provided at both ends of the outer wall of the insulation sleeve 14. A through groove 31 is provided on the end of the nut cap 3. The inner diameter of the through groove 31 is adapted to the outer diameter of the movable groove 140. Several anti-slip posts 30 are provided on the outer wall of the nut cap 3. The anti-slip posts 30 are distributed in a ring at equal intervals. The anti-slip posts 30 and the nut cap 3 are integrally formed.

[0043] In this utility model, the through groove 31 and the movable groove 140 are slidably engaged, which facilitates the movement and engagement of the nut cap 3 on the end of the insulation sleeve 14. With the cooperation of multiple anti-slip posts 30, the contact area is increased, thereby increasing the friction force.

[0044] Furthermore, the outer sleeve 2 is provided with a threaded ring 20 at one end corresponding to the connecting pipe 1. The threaded ring 20 and the outer sleeve 2 are integrally formed. The nut cap 3 is inserted into the collar 10 and threadedly connected to the threaded ring 20 through the collar 10.

[0045] In this invention, the nut cap 3 and the threaded ring 20 are threaded together to achieve a stable combination and installation of the outer sleeve 2 and the connecting pipe 1, thereby increasing the stability of the installation.

[0046] It is worth noting that an annular groove 23 is provided on the outer wall of the outer sleeve 2 at the position corresponding to the arc groove 100, and a rubber ring 230 is provided in the annular groove 23. An installation groove 21 is provided on the inner wall of the outer sleeve 2. A protrusion 210 is provided on the inner wall of the installation groove 21 at the position corresponding to the groove 11. A guide groove 22 is provided on the inner wall of the installation groove 21 at the position corresponding to the positioning ball 13, and a positioning groove 220 is provided at the end of the guide groove 22.

[0047] Secondly, the rubber ring 230 is engaged with the annular groove 23, and the outer wall of the rubber ring 230 is engaged with the arc groove 100.

[0048] In this invention, the rubber ring 230, which connects the annular groove 23 and the arc groove 100, increases the tightness of the combination between the collar 10 and the outer sleeve 2, and reduces the impact of leakage at the connection.

[0049] Furthermore, the outer diameter of the connecting pipe 1 is adapted to the inner diameter of the mounting groove 21, the width of the outer wall of the protrusion 210 is adapted to the width of the inner wall of the groove 11, the positioning ball 13 slides with the guide groove 22, and the positioning ball 13 is inserted with the positioning groove 220.

[0050] In this utility model, the protrusion 210 and the groove 11 are inserted and matched to increase the stability of the connection between the connecting tube 1 and the outer tube 2. With the cooperation of the guide groove 22, the positioning ball 13 slides from the guide groove 22 into the positioning groove 220, which increases the stability of the combined installation of the connecting tube 1 and the outer tube 2. The positioning ball 13 is engaged in the positioning groove 220 and fixes the connecting tube 1 and the outer tube 2 under the action of friction.

[0051] In this embodiment, when using the hose assembly, the user first welds the threaded ring 20 to the outer sleeve 2, inserts the rubber ring 230 into the annular groove 23 on the outer sleeve 2, then puts the insulation sleeve 14 with the movable groove 140 onto the connecting pipe 1 with the interlayer 15, and limits the position of the insulation sleeve 14 with the cooperation of the two collars 10. Then, the positioning ball 13 is glued and fixed to the bottom of the circular groove 12 by the spring 130, and the nut cap 3 with the anti-slip post 30 is put onto the movable groove 140, and the nut cap 3 slides with the collar 10.

[0052] Two outer sleeves 2 are welded and fixed to the external pipeline. When it is necessary to connect with the connecting pipe 1, the two ends of the connecting pipe 1 are manually inserted into the corresponding mounting grooves 21, and the protrusions 210 and grooves 11 are inserted into each other. The positioning ball 13 slides in the guide groove 22. Under the action of the squeezing force, the positioning ball 13 squeezes the spring 130 and is housed in the circular groove 12. When the end of the connecting pipe 1 is tightly attached to the bottom of the mounting groove 21, the positioning ball 13 and the positioning groove 220 are inserted into each other, realizing the initial insertion of the connecting pipe 1 and the outer sleeve 2. The rubber ring 230 connects the annular groove 100 and the arc groove 23 to increase the sealing between the connecting pipe 1 and the outer sleeve 2 and reduce the impact of leakage. Finally, the connecting pipe 1 and the outer sleeve 2 are further fixed by the threaded connection of the nut cap 3 and the threaded ring 20. The overall assembly and installation are convenient and quick. With the cooperation of the interlayer 15 and the insulation sleeve 14, double-layer insulation is provided. With the cooperation of the wear-resistant inner liner 16, the impact of internal liquid on the internal corrosion of the connecting pipe 1 is reduced.

Claims

1. A hose assembly, comprising a connecting tube (1), wherein both ends of the connecting tube (1) are fitted with outer sleeves (2), and a nut (3) is provided at the connection between the connecting tube (1) and the outer sleeves (2), characterized in that: The inner wall of the connecting pipe (1) is provided with a wear-resistant inner liner (16), and the outer wall of the connecting pipe (1) is provided with collars (10) near both ends. The inner wall of the collars (10) is provided with an arc groove (100). The outer walls of both ends of the connecting pipe (1) are symmetrically provided with circular grooves (12). The circular grooves (12) are provided with positioning balls (13). The bottom of the positioning balls (13) is provided with springs (130). The outer wall of the connecting pipe (1) is also symmetrically provided with grooves (11). The outer wall of the connecting pipe (1) is also fitted with a heat-insulating sleeve (14). The outer tube ( 2) A threaded ring (20) is provided at one end corresponding to the connecting pipe (1). An annular groove (23) is provided on the outer wall of the outer sleeve (2) at the position corresponding to the arc groove (100). A rubber ring (230) is provided in the annular groove (23). An installation groove (21) is provided on the inner wall of the outer sleeve (2). A protrusion (210) is provided on the inner wall of the installation groove (21) at the position corresponding to the groove (11). A guide groove (22) is provided on the inner wall of the installation groove (21) at the position corresponding to the positioning ball (13). A positioning groove (220) is provided at the end of the guide groove (22).

2. The hose assembly according to claim 1, characterized in that: The hollow area between the inner and outer walls of the connecting pipe (1) is a sandwich layer (15). The sandwich layer (15) is vacuumed. The outer wall of the wear-resistant inner liner (16) is bonded and fixed to the connecting pipe (1). The length of the wear-resistant inner liner (16) is adapted to the length of the connecting pipe (1).

3. The hose assembly according to claim 1, characterized in that: The collar (10) is welded and fixed to the connecting pipe (1). The distance between the two collars (10) is adapted to the length of the outer wall of the insulation sleeve (14). The inner wall of the insulation sleeve (14) is bonded and fixed to the outer wall of the connecting pipe (1).

4. The hose assembly according to claim 1, characterized in that: The insulation sleeve (14) has movable grooves (140) at both ends of its outer wall. The nut cap (3) has a through groove (31) at its end. The inner diameter of the through groove (31) is matched with the outer diameter of the movable groove (140). The nut cap (3) has several anti-slip posts (30) on its outer wall. The anti-slip posts (30) are distributed in a ring at equal intervals. The anti-slip posts (30) and the nut cap (3) are integrally formed.

5. The hose assembly according to claim 1, characterized in that: The outer diameter of the positioning ball (13) is adapted to the inner diameter of the circular groove (12). One end of the spring (130) is bonded and fixed to the bottom of the positioning ball (13), and the other end is bonded and fixed to the bottom of the circular groove (12).

6. The hose assembly according to claim 1, characterized in that: The threaded ring (20) and the outer sleeve (2) are integrally formed. The nut cap (3) is inserted into the collar (10) and the nut cap (3) passes through the collar (10) and is threadedly connected to the threaded ring (20).

7. The hose assembly according to claim 1, characterized in that: The rubber ring (230) is engaged with the annular groove (23), and the outer wall of the rubber ring (230) is engaged with the arc groove (100).

8. The hose assembly according to claim 1, characterized in that: The outer diameter of the connecting pipe (1) is adapted to the inner diameter of the mounting groove (21), the width of the outer wall of the protrusion (210) is adapted to the width of the inner wall of the groove (11), the positioning ball (13) slides with the guide groove (22), and the positioning ball (13) is inserted with the positioning groove (220).

Images