Cold-rolled seamless steel pipe for vehicle hydraulic system

Abstract

The utility model relates to the technical field of seamless steel tubes, in particular to a cold-rolled seamless steel tube for a vehicle hydraulic system. The cold-rolled seamless steel pipe for the vehicle hydraulic system comprises a seamless steel pipe body and a connecting ring, the left side and the right side of the outer side wall of the seamless steel pipe body are each provided with a set of external threads, the left side and the right side of the top of the seamless steel pipe body are each provided with a set of inserting holes, and a limiting ring is arranged on the inner side wall of the connecting ring. The left side and the right side of the limiting ring are each provided with a set of sealing rings, the left side and the right side of the inner side wall of the connecting ring are each provided with a set of internal threads, the connecting ring is connected to the right side of the outer side wall of the seamless steel pipe in a threaded mode, and the left side and the right side of the top of the connecting ring are each provided with a set of containing grooves. When the two seamless steel pipes are fixed to the left side and the right side of the inner side wall of the connecting ring respectively, the two sealing rings can seal connecting gaps between the two seamless steel pipes and the connecting ring, so that oil leakage is prevented, and the use reliability of the vehicle hydraulic system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a cold-rolled seamless steel pipe for a vehicle hydraulic system. Background Technique

[0002] For the seamless steel pipe used in the hydraulic system, a ring with a raised height is sleeved on both ends of the manufactured pipe body to limit the displacement of the connecting nut. The connecting nut is connected to the joint to prevent the connecting nut from detaching from the pipe body under high-pressure environment. However, since the ring and the pipe body are two independent objects, it is inevitable that they will shift under external factors such as jitter or excessive pressure during the movement process, ultimately resulting in the connecting nut detaching from the pipe body, causing oil leakage, and even endangering the safety of the equipment or vehicle;

[0003] Chinese Patent with publication number CN211083169U discloses a cold-rolled precision seamless steel pipe for a hydraulic system. One end of the steel pipe body is coaxially and fixedly installed with an inner fixing ring, and the other end is coaxially and fixedly installed with an outer fixing ring. An L-shaped positioning opening is formed on the outer fixing ring. The long side of the L-shaped positioning opening coincides with the central axis of the outer fixing ring, and the short side of the L-shaped positioning opening is arranged along the circumference of the outer fixing ring. A fixing block is fixedly installed on the inner fixing ring. A first connecting ring is coaxially and fixedly installed outside the outer fixing ring. One end of the steel pipe body close to the inner fixing ring is coaxially and fixedly installed with a second connecting ring identical to the first connecting ring. External threads are provided on both the first connecting ring and the second connecting ring, and the helix direction of the external threads is opposite to the winding direction of the short side in the L-shaped positioning opening. The first connecting ring is externally threadedly connected with a connecting sleeve; double protection enhances the connection performance between the two steel pipe bodies, avoids oil leakage, and ensures the safety of the vehicle or equipment;

[0004] The above-mentioned prior art solutions have the following defects: Through the fixing block and the connecting sleeve, the two groups of steel pipe bodies can be doubly butt-jointed and fixed. However, in actual use, the fixing block and the connecting sleeve cannot seal between the two groups of butt-jointed steel pipe bodies, thereby resulting in the possibility of oil leakage at the connection gap between the two groups of steel pipe bodies. In view of the above situation, technical innovation is carried out on the basis of the existing cold-rolled seamless steel pipe for a vehicle hydraulic system. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cold-rolled seamless steel pipe for a vehicle hydraulic system to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A cold-rolled seamless steel pipe for a vehicle hydraulic system, comprising:

[0007] Seamless steel pipe and connecting ring. A set of external threads are provided on both the left and right sides of the outer side wall of the seamless steel pipe. A set of jacks are provided on both the left and right sides of the top of the seamless steel pipe. A limiting ring is provided on the inner side wall of the connecting ring. A set of sealing rings are provided on both the left and right sides of the limiting ring. A set of internal threads are provided on both the left and right sides of the inner side wall of the connecting ring. The connecting ring is screwed on the right side of the outer side wall of the seamless steel pipe. Among them: A set of storage grooves are provided on both the left and right sides of the top of the connecting ring, and fixing components are placed in the storage grooves.

[0008] Preferably, the fixing component includes a connecting block. A groove is provided on the top of the connecting block. A pull rod is provided in the groove. A plug pin is provided at the bottom of the connecting block. A magnetic block is embedded at the bottom of the plug pin. A spring is provided at the bottom of the connecting block, and the spring is located outside the plug pin.

[0009] Preferably, a through hole is provided through the bottom of the storage groove of the connecting ring, and the through hole corresponds to the jack.

[0010] Preferably, an annular installation groove is provided at the bottom of the storage groove, and the annular installation groove is located outside the through hole.

[0011] Preferably, the connecting block is arranged in the storage groove of the connecting ring, and the spring is arranged in the annular installation groove.

[0012] Preferably, the plug pin passes through the through hole of the connecting ring and is inserted into the jack, and the magnetic block is magnetically attracted to the seamless steel pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, when two seamless steel pipes are respectively fixed on the left and right sides of the inner side wall of the connecting ring, the connection gaps between the two seamless steel pipes and the connecting ring can be sealed by two sealing rings, thereby preventing oil leakage and improving the use reliability of the vehicle hydraulic system.

[0015] By screwing the external threads on the outside of the seamless steel pipe with the internal threads on the inside of the connecting ring, the seamless steel pipe can be initially fixed in the connecting ring. The plug pin is fixed in the jack of the seamless steel pipe through a spring, thereby performing secondary fixation between the seamless steel pipe and the connecting ring. With the magnetic attraction of the magnetic block to the seamless steel pipe, the connection stability between the seamless steel pipe and the connecting ring can be further improved, thereby improving the butt joint strength between the seamless steel pipe and the connecting ring and further improving the use reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a cold-rolled seamless steel pipe for a vehicle hydraulic system of the present utility model;

[0017] Figure 2Front cross-sectional view of a cold-rolled seamless steel pipe for a vehicle hydraulic system of the present utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of part A.

[0019] In the figure: 1, seamless steel pipe; 11, external thread; 12, jack; 2, connecting ring; 21, connecting block; 22, pull rod; 23, pin; 24, magnetic block; 25, spring; 26, limit ring; 27, sealing ring. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 - 3, A cold-rolled seamless steel pipe for a vehicle hydraulic system, comprising a seamless steel pipe 1 and a connecting ring 2. A set of external threads 11 are provided on both the left and right sides of the outer side wall of the seamless steel pipe 1. A set of jacks 12 are provided on both the left and right sides of the top of the seamless steel pipe 1. A limiting ring 26 is fixedly arranged on the inner side wall of the connecting ring 2. A set of sealing rings 27 are fixedly arranged on both the left and right sides of the limiting ring 26. A set of internal threads are provided on both the left and right sides of the inner side wall of the connecting ring 2. The connecting ring 2 is screwed on the right side of the outer side wall of the seamless steel pipe 1. When the seamless steel pipe 1 is screwed into the connecting ring 2 through the external threads 11, the seamless steel pipe 1 will be in close contact with the sealing ring 27, and the connecting gap between the seamless steel pipe 1 and the connecting ring 2 is sealed by the sealing ring 27. Among them: A set of receiving grooves are provided on both the left and right sides of the top of the connecting ring 2. A fixing component is placed in the receiving groove. The fixing component includes a connecting block 21. A groove is provided on the top of the connecting block 21. A pull rod 22 is fixedly arranged in the groove. A plug pin 23 is fixedly arranged at the bottom of the connecting block 21. A magnetic block 24 is embedded at the bottom of the plug pin 23. A spring 25 is fixedly arranged at the bottom of the connecting block 21. The spring 25 is located outside the plug pin 23. A through hole is penetrated through the bottom of the receiving groove of the connecting ring 2. The through hole corresponds to the jack 12. An annular installation groove is provided at the bottom of the receiving groove. The annular installation groove is located outside the through hole. The connecting block 21 is slidably arranged in the receiving groove of the connecting ring 2. The spring 25 is fixedly arranged in the annular installation groove. The plug pin 23 penetrates through the through hole of the connecting ring 2 and is inserted into the jack 12. The magnetic block 24 and the seamless steel pipe 1 are magnetically attracted to each other. The spring 25 drives the plug pin 23 to insert into the jack 12 by its own resilience, thereby fixing the seamless steel pipe 1 in the connecting ring 2. At the same time, the magnetic attraction force of the magnetic block 24 on the seamless steel pipe 1 can ensure the plugging stability of the plug pin 23, thereby improving the connection stability between the seamless steel pipe 1 and the connecting ring 2.

[0022] Working principle: Pull the connecting block 21 upward through the pull rod 22, thereby driving the plug pin 23 to move upward into the through hole of the connecting ring 2. At this time, screw the seamless steel pipe 1 into the left side inside the connecting ring 2 through the external threads 11. When the seamless steel pipe 1 is screwed into the left side inside the connecting ring 2 through the external threads 11, the seamless steel pipe 1 will be in close contact with the sealing ring 27, and the connecting gap between the seamless steel pipe 1 and the connecting ring 2 is sealed by the sealing ring 27. Then release the pull rod 22. The spring 25 drives the plug pin 23 to insert into the jack 12 by its own resilience, thereby fixing the seamless steel pipe 1 in the connecting ring 2. At the same time, the magnetic attraction force of the magnetic block 24 on the seamless steel pipe 1 can ensure the plugging stability of the plug pin 23, thereby improving the connection stability between the seamless steel pipe 1 and the connecting ring 2. Screw and fix another set of seamless steel pipes 1 in the right side inside the connecting ring 2 in the same way. In this way, the connecting gaps between the two sets of seamless steel pipes 1 and the connecting ring 2 can be sealed by the two sets of sealing rings 27, thereby preventing oil leakage and further improving the use reliability of the vehicle hydraulic system.

Claims

1. A cold-rolled seamless steel pipe for a vehicle hydraulic system, characterized in that, Including: A seamless steel pipe (1) and a connecting ring (2). A set of external threads (11) are provided on both the left and right sides of the outer side wall of the seamless steel pipe (1). A set of jacks (12) are provided on both the left and right sides of the top of the seamless steel pipe (1). A limiting ring (26) is provided on the inner side wall of the connecting ring (2). A set of sealing rings (27) are provided on both the left and right sides of the limiting ring (26). A set of internal threads are provided on both the left and right sides of the inner side wall of the connecting ring (2). The connecting ring (2) is screwed on the right side of the outer side wall of the seamless steel pipe (1). Among them: A set of receiving grooves are provided on both the left and right sides of the top of the connecting ring (2), and fixing components are placed in the receiving grooves.

2. The cold-rolled seamless steel pipe for a vehicle hydraulic system according to claim 1, characterized in that: The fixing components include a connecting block (21). A groove is provided on the top of the connecting block (21). A pull rod (22) is provided in the groove. A plug pin (23) is provided at the bottom of the connecting block (21). A magnetic block (24) is embedded at the bottom of the plug pin (23). A spring (25) is provided at the bottom of the connecting block (21), and the spring (25) is located on the outer circle of the plug pin (23).

3. A cold-rolled seamless steel pipe for a vehicle hydraulic system according to claim 2, characterized in that: A through hole is provided through the bottom of the receiving groove of the connecting ring (2), and the through hole corresponds to the jack (12).

4. A cold-rolled seamless steel pipe for a vehicle hydraulic system according to claim 3, characterized in that: An annular mounting groove is provided at the bottom of the receiving groove, and the annular mounting groove is located on the outer circle of the through hole.

5. A cold-rolled seamless steel pipe for a vehicle hydraulic system according to claim 4, characterized in that: The connecting block (21) is arranged in the receiving groove of the connecting ring (2), and the spring (25) is arranged in the annular mounting groove.

6. The cold-rolled seamless steel pipe for a vehicle hydraulic system according to claim 5, characterized in that: The plug pin (23) penetrates through the through hole of the connecting ring (2) and is inserted into the jack (12), and the magnetic block (24) is magnetically attracted to the seamless steel pipe (1).

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