Anti-loosening device

Abstract

The utility model discloses an anti-loosening device which comprises a straight joint and a metal hose assembly which are matched, one end of the straight joint is tapped, the other end of the straight joint is provided with a locking step face, the threaded end of the straight joint is connected with the outside, and the face with the locking step face is connected with the metal hose assembly. The metal hose assembly comprises a steel wire mesh hose, a connecting pipe body, a rotating head, fingers, a spring, a retaining block, a rotating pin and a clamping spring, the lock head is structurally provided with an eccentric sliding groove, and when the lock head is rotated, the metal hose assembly is rapidly installed on the straight-through connector; the anti-loosing joint and the metal hose cannot loosen or leak at the joint due to vibration or pulling in a dynamic or moving environment, and the anti-loosing joint can be applied to steam pipelines or occasions with high sealing requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-loosening joints and metal hoses, and in particular relates to an anti-loosening device. Background Art

[0002] Metal hoses are widely used in industry and are used in many occasions due to their superior performance. Metal hoses are often used in some high temperature and high pressure occasions, especially in environments where metal hoses need to move or vibrate greatly, the requirements for metal hoses will be higher. Due to the objective use environment, the length of a single metal hose is not enough, and multiple metal hoses need to be connected, which requires preventing the multiple metal hoses from loosening at the interface to ensure safety. Utility Model Content

[0003] In view of this, the present invention hopes to provide an anti-loosening device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0004] The technical solution of the embodiment of the utility model is achieved as follows: an anti-loosening device includes a straight-through connector that can be used in conjunction with a metal hose assembly, one end of the straight-through connector is connected to an external pipeline, and the other end is connected to the metal hose assembly. The anti-loosening device also includes: a swivel head, a finger, a spring, a stop block, a swivel pin and a retaining spring.

[0005] Furthermore, the metal hose assembly includes a wire mesh hose, one end of the straight-through connector is provided with a tapped thread, the tapped thread end is connected to an external pipeline, and the other end is provided with a step surface, which is connected to the metal hose assembly.

[0006] Furthermore, the wire mesh hose is the main pipe for the flow of medium in the metal hose assembly and is directly connected to the connecting pipe body. One end of the connecting pipe body is provided with a hexagonal surface.

[0007] Furthermore, four evenly distributed through slots are opened at the other end of the connecting pipe body, and the fingers are fixed in the through slots by a rotating pin. The fingers can rotate around the rotating pin. The middle part of the connecting pipe body is provided with evenly distributed square holes, and the square holes are equipped with stop blocks and springs.

[0008] Furthermore, four evenly distributed eccentric sliding grooves are provided on the outer diameter of the rotating head, a concave tooth groove is provided in the inner hole on one side of the outer diameter, and a first hexagonal surface structure is provided in a section of the inner diameter.

[0009] Furthermore, one end of the finger is a toothed curved surface that matches the concave tooth groove, and the other end is a smooth curved surface.

[0010] Furthermore, the smooth curved surface of the finger is embedded in the eccentric sliding groove of the rotating head, and when the wrench moves the first hexagonal surface, the finger rotates around the rotating pin, and the toothed surface presses the step surface of the straight-through joint.

[0011] Furthermore, when the rotating head is moved, it can rotate unidirectionally around the connecting pipe body. When disassembling the metal hose assembly, the snap ring is taken out, and the fastening and anti-loosening functions of the metal hose assembly are cancelled. Axially withdrawing the rotating head can complete the disassembly of the metal hose.

[0012] The anti-loosening device of the present utility model has the following advantages: Since devices such as a direct joint, a rotating head, and a snap ring are provided in the device, when the metal hose or the seal fails and better sealing or a metal hose is required, only the snap ring needs to be taken out and the rotating head is axially withdrawn, and the metal hose can be disassembled. This metal hose has the functions of relaxation and anti-loosening, and the disassembly and assembly are also very convenient. Description of the Drawings

[0013] Figure 1 It is a structural diagram of an anti-loosening device;

[0014] Figure 2 It is a three-dimensional view of an anti-loosening device;

[0015] Figure 3 It is a principle diagram of an anti-loosening device;

[0016] Figure 4 It is a structural diagram of a straight-through joint of an anti-loosening device;

[0017] Figure 5 It is a top view of an anti-loosening device;

[0018] Figure 6 It is a structure of a first six-sided angle.

[0019] Reference Numerals

[0020] 10 - Metal hose assembly; 20 - Straight-through joint; 101 - Steel wire mesh hose; 102 - Connecting pipe body; 103 - Rotating head; 104 - Finger; 105 - Spring; 106 - Anti-reverse block; 107 - Rotating pin; 108 - Snap ring; 109 - Square hole; 110 - Eccentric chute; 111 - Hexagonal surface; 112 - Through slot; 113 - External pipeline; 114 - Step surface; 330 - First hexagonal surface; 15 - Concave tooth groove. Detailed Embodiment

[0021] In order to better understand the purpose, structure and function of the present utility model, the following further detailed description of an anti-loosening device of the present utility model is made in conjunction with the drawings.

[0022] As Figures 1 to 6As shown in the figure, a loosening prevention device of the present utility model includes a straight-through joint 20 that can be used in cooperation with a metal hose assembly 10. One end of the straight-through joint 20 is connected to an external pipeline 113, and the other end is connected to the metal hose assembly 10. The loosening prevention device further includes: a rotating head 103, a finger 104, a spring 105, a detent block 106, a rotating pin 107, and a snap ring 108, a wire mesh hose 101, and a pipe body 102. The two ends of the metal hose assembly 10 have the same composition.

[0023] Further, the wire mesh hose 101 is the main pipe for the metal hose assembly to circulate the medium, and is directly connected to the pipe body 102. One end of the pipe body 102 has a hexagonal surface 111. When installing the metal hose assembly 10, a wrench is used to hold the hexagonal surface 111 to prevent the metal hose assembly 10 from twisting. Four evenly distributed through slots 112 are opened at the other end of the pipe body 102. The finger 104 is fixed in the through slot 112 with a rotating pin 107, and the finger 104 can rotate around the rotating pin 107. The middle position of the pipe body 102 is provided with a number of evenly distributed square holes 109. The detent block 106 and the spring 105 are installed in the square holes 109, and the rotating head 103 is sleeved on the detent block 106 and the spring 105, and then the snap ring 108 is used to fix the rotating head 103 on the pipe body 102.

[0024] Further, in the structure of the rotating head 103, four evenly distributed eccentric sliding grooves 110 are provided on the outer diameter, a concave tooth groove 15 is provided in the inner hole on one side of the outer diameter, and one section of the inner diameter is a first hexagonal surface 330 structure. When installing the metal hose, a wrench is used to move the hexagonal surface for tightening. One end of the finger 104 is a tooth-shaped curved surface (not shown in the figure) that cooperates with the concave tooth groove 15, and the other end is a smooth curved surface (not shown in the figure). The smooth curved surface of the finger 104 is embedded in the eccentric sliding groove 110 of the rotating head 103. When the wrench is used to move the hexagonal surface 111 in the M direction, the finger 104 rotates around the rotating pin 107, and the tooth-shaped surface presses against the step surface 114 of the straight-through joint 20.

[0025] Further, when the rotating head 103 is moved, it can rotate unidirectionally around the pipe body 102 along the N direction. When disassembling the metal hose assembly 10, the snap ring 108 is taken out. At this time, the fastening and anti-loosening functions of the metal hose assembly 10 are cancelled, and the rotating head 103 can be axially withdrawn to complete the disassembly of the metal hose 10.

[0026] It can be understood that the present utility model is described by means of some embodiments. Those skilled in the art will be aware that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present utility model.

Claims

1. An anti-loosening device, comprising a straight joint (20) that can be used in conjunction with a metal hose assembly (10), wherein one end of the straight joint (20) is connected to an external pipeline (113) and the other end is connected to the metal hose assembly (10), characterized in that: The anti-loosening device further comprises: a rotating head (103), a finger (104), a spring (105), a stop block (106), a rotating pin (107) and a retaining spring (108).

2. The anti-loosening device according to claim 1, characterized in that: The metal hose assembly (10) comprises a wire mesh hose (101), one end of the straight connector (20) is provided with a tapped thread, the tapped thread end is connected to an external pipeline (113), and the other end thereof is provided with a stepped surface (114), the stepped surface (114) is connected to the metal hose assembly (10).

3. The anti-loosening device according to claim 2, characterized in that: The wire mesh hose (101) is the main pipe for the flow of medium in the metal hose assembly and is directly connected to the pipe body (102). One end of the pipe body (102) is provided with a hexagonal surface (111).

4. The anti-loosening device according to claim 3, characterized in that: The other end of the connecting pipe body (102) is provided with four evenly distributed through grooves (112), and the finger (104) is fixed in the through groove (112) by a rotating pin (107). The finger (104) can rotate around the rotating pin (107). The connecting pipe body (102) has evenly distributed square holes (109) in the middle, and a stop block (106) and a spring (105) are installed in the square hole (109).

5. The anti-loosening device according to claim 4, characterized in that: Four evenly distributed eccentric sliding grooves (110) are provided on the outer diameter of the rotating head (103), a concave tooth groove (15) is provided in the inner hole on one side of the outer diameter, and a first hexagonal surface (330) structure is provided in a section of the inner diameter.

6. The anti-loosening device according to claim 4, characterized in that: One end of the finger (104) is a toothed curved surface that matches the concave tooth groove (15), and the other end is a smooth curved surface.

7. The anti-loosening device according to claim 6, characterized in that: The smooth curved surface of the finger (104) is embedded in the eccentric sliding groove (110) of the rotating head (103). When the wrench moves the first hexagonal surface (330), the finger (104) rotates around the rotating pin (107), and the toothed surface presses the step surface (114) of the straight-through connector (20).

8. The anti-loosening device according to claim 7, characterized in that: The rotating head (103) can rotate unidirectionally around the connecting pipe body (102) when being moved. When the metal hose assembly (10) is disassembled, the retaining ring (108) is removed, and the fastening and anti-detachment functions of the metal hose assembly (10) are cancelled. The disassembly of the metal hose assembly (10) can be completed by axially withdrawing the rotating head (103).

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