A double-layer metal flexible pipe for pipelines
The design of the sleeve and limiting rod solves the problem of difficult connection of existing double-layer metal hoses, realizing convenient connection and stable limiting, and simplifying the installation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU CHANGLING ELECTRICAL EQUIP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-30
AI Technical Summary
The existing double-layer metal flexible hoses used for pipelines are not easy to connect, requiring workers to manually operate tools to install bolts.
A structure including a sleeve, a mounting plate, a limiting rod, and a limiting plate was designed. By cooperating with the positioning pin and the positioning hole, and combining the rotational connection between the limiting rod and the sleeve, quick connection and limiting are achieved.
It achieves convenient connection and stable positioning of double-layer metal flexible hoses, simplifies the installation process, and improves connection efficiency.
Smart Images

Figure CN224433770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a metal hose, and more particularly to a double-layer metal hose for pipelines, belonging to the field of metal hose technology. Background Technology
[0002] Metal flexible hoses are an important component in the connection pipelines of modern industrial equipment. They are used as protective conduits for wires and cables, signal wires and cables of automated instruments, and shower hoses in civilian applications.
[0003] The existing double-layer metal flexible pipes generally require workers to carry tools to rotate the bolts and install them to connect the two flexible pipes, which makes the connection of the flexible pipes relatively difficult. Utility Model Content
[0004] The main purpose of this utility model is to solve the problem of the difficulty in connecting flexible hoses, and to provide a double-layer metal flexible hose for pipelines.
[0005] The objective of this utility model can be achieved by adopting the following technical solution:
[0006] A double-layer metal flexible pipe for pipelines includes a first double-layer metal flexible pipe and a second double-layer metal flexible pipe installed at one end of the first double-layer metal flexible pipe. An installation plate is installed on the first double-layer metal flexible pipe, and a sleeve is installed on the second double-layer metal flexible pipe. The sleeve has an installation cavity that mates with the installation plate. A positioning post is installed on the sleeve. A positioning hole that mates with the positioning post is opened on the installation plate. A limit component is rotatably installed on the sleeve.
[0007] Preferably, the limiting assembly includes a limiting rod, a limiting plate, and a plug rod. The limiting rod is rotatably mounted on the sleeve, the limiting plate is slidably mounted on the limiting rod, and the plug rod is mounted on the limiting plate. Both the limiting rod and the mounting plate have slots that cooperate with the plug rod.
[0008] Preferably, a rotating block is installed on the limiting rod, and a rotating hole that cooperates with the rotating block is opened on the sleeve.
[0009] Preferably, the rotating block has multiple rotating cavities, and ball bearings are rotatably installed inside the rotating cavities.
[0010] Preferably, a guide rod is installed on the limiting rod, and the limiting plate is slidably installed on the guide rod. The limiting plate has a sliding hole that cooperates with the guide rod, and a connecting plate is installed at one end of the guide rod.
[0011] Preferably, the limiting plate is connected to the connecting plate by a spring.
[0012] Preferably, a pull rod is installed on the limiting plate, and an anti-slip pad is installed on the pull rod.
[0013] The beneficial technical effects of this utility model are as follows:
[0014] 1. According to the present invention, the double-layer metal flexible pipe for pipelines can be connected to the first double-layer metal flexible pipe and the second double-layer metal flexible pipe by setting a sleeve and fitting the installation disc in the sleeve. Inserting the positioning pin into the positioning hole can facilitate the connection of the first double-layer metal flexible pipe and the second double-layer metal flexible pipe, making the connection relatively convenient.
[0015] 2. By setting a limiting rod, rotating the limiting rod onto the mounting plate, and sliding the insert rod into the slot, the first metal double-layer hose can be limited after installation. The positioning post engages with the positioning hole, which facilitates the limitation of the first and second metal double-layer hoses. By setting a limiting rod that is rotatably connected to the sleeve, the limiting rod can be rotated to open the sleeve, which facilitates the movement of the mounting plate into the inside of the sleeve. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the sleeve structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the positioning column structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the limiting rod structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the positioning hole structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the rotating block structure of this utility model;
[0022] Figure 7 This is a schematic diagram of the insertion rod structure of this utility model;
[0023] Figure 8 This is a schematic diagram of the slot structure of this utility model;
[0024] Figure 9 This is a schematic diagram of the sliding hole structure of this utility model.
[0025] In the diagram: 1. First double-walled metal hose; 2. Second double-walled metal hose; 3. Sleeve; 4. Mounting plate; 5. Limiting rod; 6. Limiting plate; 7. Pull rod; 8. Guide rod; 9. Spring; 10. Positioning post; 11. Rotary block; 12. Insert rod; 13. Mounting cavity; 14. Positioning hole; 15. Rotary hole; 16. Ball bearing; 17. Connecting plate; 18. Slot; 19. Anti-slip pad; 20. Sliding hole. Detailed Implementation
[0026] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.
[0027] like Figures 1-9 As shown, the double-layer metal flexible conduit for pipelines provided in this embodiment includes a first double-layer metal flexible conduit 1 and a second double-layer metal flexible conduit 2 installed at one end of the first double-layer metal flexible conduit 1. An installation plate 4 is installed on the first double-layer metal flexible conduit 1, and a sleeve 3 is installed on the second double-layer metal flexible conduit 2. An installation cavity 13 that cooperates with the installation plate 4 is opened on the sleeve 3. A positioning post 10 is installed on the sleeve 3, and a positioning hole 14 that cooperates with the positioning post 10 is opened on the installation plate 4. A limit component is rotatably installed on the sleeve 3. By setting the sleeve 3, the installation plate 4 is fitted in the sleeve 3, which enables the first double-layer metal flexible conduit 1 and the second double-layer metal flexible conduit 2 to be connected. Inserting the positioning post 10 into the positioning hole 14 facilitates the connection of the first double-layer metal flexible conduit 1 and the second double-layer metal flexible conduit 2, making the connection relatively convenient.
[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a rotating block 11 is installed on the limiting rod 5, and a rotating hole 15 that cooperates with the rotating block 11 is opened on the sleeve 3. By setting the rotating block 11 and the rotating hole 15 to be rotatably connected, the limiting rod 5 can be rotated to contact the mounting plate 4. The rotating block 11 has multiple rotating cavities, and a ball bearing 16 is rotatably installed inside the rotating cavity. By setting the ball bearing 16, the friction force of the rotating hole 15 can be reduced.
[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the limiting assembly includes a limiting rod 5, a limiting plate 6, and an insert rod 12. The limiting rod 5 is rotatably mounted on the sleeve 3, and the limiting plate 6 is slidably mounted on the limiting rod 5. The insert rod 12 is mounted on the limiting plate 6. Both the limiting rod 5 and the mounting plate 4 have slots 18 that cooperate with the insert rod 12. By setting the limiting rod 5, rotating it moves it onto the mounting plate 4, and sliding the insert rod 12, it is inserted into the slot 18, thus limiting the installation of the first double-walled metal hose 1. The positioning post 10 engages with the positioning hole 14, facilitating the limiting of the first double-walled metal hose 1 and the second double-walled metal hose 2. By rotatably connecting the limiting rod 5 to the sleeve 3, the sleeve 3 can be opened, facilitating the movement of the mounting plate 4 into the sleeve 3. A guide rod 8 is mounted on the limiting rod 5. A limiting plate 6 is slidably installed on the guide rod 8. The limiting plate 6 has a sliding hole 20 that cooperates with the guide rod 8. A connecting plate 17 is installed at one end of the guide rod 8. By setting the guide rod 8 and the limiting plate 6 to slide together, the limiting plate 6 and the insertion rod 12 can be guided and limited. The limiting plate 6 is connected to the connecting plate 17 through a spring 9. When the limiting rod 5 is rotated, the rotating block 11 rotates in the ball bearing 16, thereby making the limiting rod 5 contact the mounting plate 4. When the limiting plate 6 is released, the spring 9 extends and drives the insertion rod 12 to move, inserting the insertion rod 12 into the slot 18, which can limit the connection of the first metal double-layer hose 1 and the second metal double-layer hose 2. A pull rod 7 is installed on the limiting plate 6, and an anti-slip pad 19 is installed on the pull rod 7. By setting the pull rod 7, the limiting plate 6 can be pulled easily. By setting the anti-slip pad 19, the friction of the pull rod 7 can be increased.
[0030] In this embodiment, as Figures 1-9 As shown in the figure, the working process of a double-layer metal flexible pipe for pipelines provided in this embodiment is as follows:
[0031] Step 1: Slide the mounting plate 4 into the sleeve 3, insert the positioning pin 10 into the positioning hole 14, so that the first metal double-layer hose 1 and the second metal double-layer hose 2 are connected.
[0032] Step 2: Rotate the limiting rod 5, and the rotating block 11 rotates in the ball 16, thereby making the limiting rod 5 contact the mounting plate 4. Release the limiting plate 6, and the spring 9 extends to drive the insertion rod 12 to move, inserting the insertion rod 12 into the slot 18 to limit the connection of the first metal double-layer hose 1 and the second metal double-layer hose 2.
[0033] In summary, in this embodiment, the double-layer metal flexible hose for pipelines according to this embodiment, by setting the sleeve 3 and the mounting plate 4 fitted in the sleeve 3, allows the first double-layer metal flexible hose 1 and the second double-layer metal flexible hose 2 to be connected. Inserting the positioning pin 10 into the positioning hole 14 facilitates the connection of the first double-layer metal flexible hose 1 and the second double-layer metal flexible hose 2, making the connection relatively convenient. By setting the rotating block 11 and rotating the rotating hole 15, it is easy to rotate the limiting rod 5 to contact the mounting plate 4. By setting the ball bearing 16, the friction of rotating the rotating hole 15 can be reduced. By setting the limiting rod 5, rotating the limiting rod 5 onto the mounting plate 4, and sliding the insertion rod 12 into the slot 18, the installed first double-layer metal flexible hose 1 can be limited, and the positioning pin 10 and the positioning hole 14 are connected. The locking hole 14 allows for easy positioning of the first double-walled metal hose 1 and the second double-walled metal hose 2. A limiting rod 5 is rotatably connected to the sleeve 3, allowing the sleeve 3 to be opened and the mounting plate 4 to be moved inside. A guide rod 8 is slidably connected to the limiting plate 6, guiding and limiting the limiting plate 6 and the insertion rod 12. Rotating the limiting rod 5 causes the rotating block 11 to rotate within the ball bearing 16, bringing the limiting rod 5 into contact with the mounting plate 4. Releasing the limiting plate 6 causes the spring 9 to extend, moving the insertion rod 12 and inserting it into the slot 18, thus limiting the connection of the first double-walled metal hose 1 and the second double-walled metal hose 2. A pull rod 7 facilitates pulling the limiting plate 6, and an anti-slip pad 19 increases the friction of the pull rod 7.
[0034] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.
[0035] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.
[0036] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A double-layer metal flexible hose for pipelines, characterized in that, The device includes a first double-walled metal hose (1) and a second double-walled metal hose (2) installed at one end of the first double-walled metal hose (1). The first double-walled metal hose (1) is equipped with an installation plate (4), and the second double-walled metal hose (2) is equipped with a sleeve (3). The sleeve (3) has an installation cavity (13) that cooperates with the installation plate (4). The sleeve (3) is equipped with a positioning post (10), and the installation plate (4) has a positioning hole (14) that cooperates with the positioning post (10). A limit assembly is rotatably installed on the sleeve (3).
2. The double-layer metal flexible pipe for pipelines according to claim 1, characterized in that, The limiting assembly includes a limiting rod (5), a limiting plate (6), and a plug rod (12). The limiting rod (5) is rotatably mounted on the sleeve (3), the limiting plate (6) is slidably mounted on the limiting rod (5), and the plug rod (12) is mounted on the limiting plate (6). The limiting rod (5) and the mounting plate (4) are both provided with slots (18) that cooperate with the plug rod (12).
3. A double-layer metal flexible pipe for pipelines according to claim 2, characterized in that, A rotating block (11) is installed on the limiting rod (5), and a rotating hole (15) is opened on the sleeve (3) to cooperate with the rotating block (11).
4. A double-layer metal flexible pipe for pipelines according to claim 3, characterized in that, The rotating block (11) has multiple rotating cavities, and ball bearings (16) are rotatably installed inside the rotating cavities.
5. A double-layer metal flexible pipe for pipelines according to claim 4, characterized in that, A guide rod (8) is installed on the limiting rod (5), and a limiting plate (6) is slidably installed on the guide rod (8). A sliding hole (20) is opened on the limiting plate (6) to cooperate with the guide rod (8). A connecting plate (17) is installed at one end of the guide rod (8).
6. A double-layer metal flexible pipe for pipelines according to claim 5, characterized in that, The limiting plate (6) is connected to the connecting plate (17) via a spring (9).
7. A double-layer metal flexible pipe for pipelines according to claim 6, characterized in that, A pull rod (7) is installed on the limiting plate (6), and an anti-slip pad (19) is installed on the pull rod (7).