A method of installing a sleeve

Abstract

The application discloses a sleeve mounting method and relates to the technical field of sleeve mounting. The steps comprise S1 pipe position correction, S2 pipe end support, S3 sleeve insertion and S4 tool removal. In the step S2 pipe end support process, the two ends of the inner pipe are supported by the first support assembly and the second support assembly respectively, which is used to offset the pressure between the inner pipe and the outer pipe, so as to protect the inner pipe and the outer pipe from being abraded. In the step S3 sleeve insertion process, the first driving assembly pushes the inner pipe in the axial direction, at this time, the axial limiting structure abuts against the right end of the outer pipe and applies a supporting force to the outer pipe, the inner pipe and the outer pipe are close to each other, and the inner pipe is inserted into the inner cavity of the outer pipe; the installation of the sleeve is realized. The application has the advantages of simple process, convenient installation, high automation degree, reduced demand for the operation level of the forklift worker, improved work efficiency, and ensured product quality.

Description

Technical Field

[0001] This invention relates to the field of sleeve installation technology, and more specifically to a sleeve installation method. Background Technology

[0002] Pipe installation is a crucial step in the manufacturing process of multi-layer insulated pipes. For example, the installation of double-layer insulated pipes often requires manual operation using forklifts and overhead cranes. In traditional techniques, operators first transport the inner and outer pipes to the pipe installation station. Then, a forklift holds one end of the inner pipe, while the overhead crane's slings / slings suspend the middle of the inner pipe. After aligning the inner pipe with the outer sheath, the forklift and overhead crane move forward simultaneously to insert the inner pipe into the outer pipe. When the outer pipe touches the slings / slings, the forklift and overhead crane stop moving forward. Then, the lifting position of the slings / slings is changed to the end of the inner pipe. After the end of the inner pipe is lifted, the forklift releases the end of the inner pipe, holds the other end of the inner pipe, and the forklift and overhead crane move forward simultaneously to insert the remaining part of the inner pipe into the outer sheath.

[0003] This method involves a complex production process, requires a large amount of manpower and resources, and demands a high level of skill from forklift operators. Furthermore, manual operation poses certain risks to workers. In addition, this method requires constant adjustment of the direction and position of the forklift and overhead crane, resulting in low production efficiency. Since forklifts and overhead cranes are not specialized tools for sleeve installation, their control precision is insufficient, often leading to excessive wear between the inner and outer tubes and reducing product quality. Summary of the Invention

[0004] In order to overcome the problems of "complex operation, high requirements for workers' technical skills, low production efficiency and low product quality" in the above-mentioned background technology, the present invention provides a sleeve installation method.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a sleeve installation method, the steps of which include: S1 tube position correction: Adjust the position of the inner tube and the outer tube until the inner tube and the outer tube are coaxial and connected end to end; S2 tube end support, the end of the inner tube away from the outer tube is supported by a first support component, and the end of the inner tube close to the outer tube is supported by a second support component. The second support component is provided with a friction-reducing part, which is installed on the inner surface of the outer tube. S3 sleeve insertion, pushing the inner tube and / or the outer tube axially, so that the inner tube is inserted into the inner cavity of the outer tube; S4 tooling removal: Remove the first support assembly and the second support assembly.

[0006] As a further optimization of the present invention, the first support component is connected to the first drive component, and the first drive component is used to drive the inner tube to move axially.

[0007] As a further optimization of the present invention, the second support component is connected to the second drive component, and the second drive component is disposed at the end of the outer tube away from the inner tube.

[0008] As a further optimization of the present invention, the second support component is connected to the first drive component.

[0009] As a further optimization of the present invention, the second support component is provided with a connecting part, which is detachably connected to the end of the inner tube.

[0010] As a further optimization of the present invention, the connecting part is provided with a horizontally placed U-shaped receiving groove, the width of which is adapted to the thickness of the side wall at the end of the inner tube.

[0011] As a further optimization of the present invention, a protective gasket is provided at the end of the receiving groove away from the inner tube.

[0012] As a further optimization of the present invention, in step S1, during the tube position correction process, the position adjustment of the inner tube and the outer tube is achieved using a limiting component.

[0013] As a further optimization of the present invention, the limiting component is provided with a radial limiting structure.

[0014] As a further optimization of the present invention, the limiting component is provided with an axial limiting structure.

[0015] In summary, the advantages of this invention are: a sleeve installation method, comprising the steps of S1 sleeve position correction, S2 sleeve end support, S3 sleeve insertion, and S4 tooling removal. During step S2, sleeve end support, the inner tube is supported at both ends by a first support assembly and a second support assembly, respectively, to offset part of the pressure between the inner and outer tubes, thereby protecting the inner and outer tubes from wear. During step S3, sleeve insertion, the first drive assembly pushes the inner tube axially, at which point the axial limiting structure abuts against the right end of the outer tube and applies a supporting force to the outer tube, causing the inner and outer tubes to approach each other until the inner tube is inserted into the inner cavity of the outer tube; thus achieving sleeve installation. This invention has a simple process, is convenient to operate, has a high degree of automation, reduces the skill requirements for forklift operators, improves work efficiency, and ensures product quality. Attached Figure Description

[0016] The present application will be further explained below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the installation steps of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3A schematic diagram showing the location and structure of the inner tube, outer tube, and second support component; Figure 4 This is a schematic diagram showing the position and structure of the inner tube and the first support component; Figure 5 This is a schematic diagram of the second support component structure; Figure 6 This is a schematic diagram showing the position and structure of the second drive assembly and the first connecting rod; Figure 7 This is a schematic diagram showing the position and structure of the second drive assembly and the second connecting rod; Figure 8 This is a schematic diagram showing the position and structure of the limiting component; Figure 9 This is a schematic diagram of the radial limiting structure.

[0017] Explanation of reference numerals in the attached figures: In the figure, 0 is the sleeve; 01 is the inner tube; 011 is the coating; 02 is the outer tube; 1 is the first support assembly; 2 is the second support assembly; 21 is the friction-reducing part; 22 is the connecting part; 23 is the protective gasket; 3 is the first drive assembly; 4 is the second drive assembly; 5 is the first connecting rod; 6 is the second connecting rod; 7 is the limiting assembly; 71 is the radial limiting structure; and 72 is the axial limiting structure. Detailed Implementation

[0018] Based on the above-described structural features of this application, the implementation methods of this application will be further described as follows: Reference Figures 1-4 This embodiment provides a method for installing a sleeve, the steps of which include: S1 pipe position correction (operator or robotic arm) adjust the position of inner tube 01 and outer tube 02 until inner tube 01 and outer tube 02 are coaxial and connected end to end; S2 pipe end support: (operator or robotic arm) The end of the inner tube 01 away from the outer tube 02 is supported by the first support assembly 1, and the end of the inner tube 01 close to the outer tube 02 is supported by the second support assembly 2. The second support assembly 2 is provided with a friction-reducing part 21, which is installed on the inner surface of the outer tube 02. The first support assembly 1 and the second support assembly 2 respectively support the two ends of the inner tube 01 to offset part of the pressure between the inner tube 01 and the outer tube 02 (this pressure is generated by the gravity of the inner tube 01). S3 sleeve 0 insertion, (operator or robotic arm or drive equipment) pushes inner tube 01 and / or outer tube 02 axially so that inner tube 01 is inserted into the inner cavity of outer tube 02; S4 tooling removal: (operator or robotic arm) removes the first support assembly 1 and the second support assembly 2.

[0019] Reference Figure 2The driving device is, for example, the first driving assembly 3. The first support assembly 1 is connected to the first driving assembly 3, which is used to push the inner tube 01 to move axially. The operator, robotic arm, or fixing device fixes the position of the outer tube 02, and then (the operator or computer control program) controls the first driving assembly 3 to push the inner tube 01 axially, so that the first driving assembly 3 inserts the inner tube 01 into the inner cavity of the outer tube 02.

[0020] Reference Figures 2-3 The inner tube 01 is connected to the second support assembly 2, for example, the second support assembly 2 adopts a hoop structure (such as...). Figure 4 As shown), card slot structure (such as) Figure 3 (As shown) and other methods to achieve a detachable connection with the inner tube 01 through friction. For example... Figure 3 and 4 As shown, the inner tube 01 moves to the right, and the opening of the second support component 2 (both the hoop structure and the slot structure) faces to the left. Therefore, the inner tube 01 pushing the second support component 2 to the right will not cause the second support component 2 to disengage. During the process, the outer tube 02 is fixed, for example, by using a chuck for locking.

[0021] Reference Figure 4 The first support component 1 includes a vertical plate and a jaw. The vertical plate is fastened to the first drive component 3 by bolts. The jaw is disposed on the side wall of the vertical plate opposite to the first drive component 3. The outer peripheral surface of the jaw is adapted to the inner cavity side wall of the inner tube 01. The outer peripheral surface of the jaw and the inner cavity side wall of the inner tube 01 are detachably connected, for example, by friction connection or electromagnetic attraction connection. The jaw is an adjustable three-jaw chuck. When the jaw of the three-jaw chuck moves outward, it abuts against the inner cavity side wall of the inner tube 01 to achieve friction connection; or the jaw is equipped with an electromagnet, which attracts (iron-containing) the inner tube 01 to achieve electromagnetic attraction connection.

[0022] Reference Figure 6 The second support assembly 2 and the second drive assembly 4 are connected by a first connecting rod 5, which is a straight rod. The second drive assembly 4 is located at the end of the outer tube 02 away from the inner tube 01. The first connecting rod 5 and the second support assembly 2 are connected by bolts, and the first connecting rod 5 and the second drive assembly 4 are fixedly connected (e.g., by welding or bolting). The second drive assembly 4 is used to control the reciprocating motion of the second support assembly 2 within the outer tube 02. The first connecting rod 5 is a rigid rod, such as a metal rod. When the second drive assembly 4 moves left and right, the first connecting rod 5 and the second support assembly 2 move in the same direction and at the same speed as the second drive assembly 4. Therefore, the second drive assembly 4 can control the second support assembly 2 to move axially within the inner cavity of the outer tube 02.

[0023] Reference Figure 7The second support assembly 2 is connected to the first drive assembly 3 via a second connecting rod 6, which is a straight rod. The first drive assembly 3 and the second connecting rod 6 are detachably connected, or the second connecting rod 6 and the second support assembly 2 are detachably connected (e.g., via bolts, ring clamps, etc.). The second connecting rod 6 is a rigid rod, such as a metal rod. When the first drive assembly 3 moves left and right, the second connecting rod 6 and the second support assembly 2 move in the same direction and at the same speed as the first drive assembly 3. Therefore, the first drive assembly 3 can control the second support assembly 2 to move axially within the inner tube 01. When the first drive assembly 3 moves to the right to insert the inner tube 01 into the outer tube 02 (during which the outer tube 02 is fixed, for example, by using a chuck), it can synchronously drive the second support assembly 2 to move to the right.

[0024] Reference Figure 3 and 5 The second support component 2 is provided with a connecting part 22, which is a plate-like structure with a π-shaped or U-shaped cross-section. The connecting part 22 is detachably connected to the end of the inner tube 01. The connecting part 22 is provided with a horizontally placed U-shaped receiving groove with an opening in the horizontal direction. The opening of the receiving groove faces the first drive component 3. The width of the receiving groove is adapted to the thickness of the side wall of the end of the inner tube 01. The side wall of the receiving groove is detachably and elastically engaged with the side wall of the end of the inner tube 01.

[0025] Reference Figure 3 and 5 The friction-reducing part 21 of the second support component 2 is a rolling friction-reducing structure or a sliding friction-reducing structure. The rolling friction-reducing structure is, for example, a freely rotating wheel, and the sliding friction-reducing structure is, for example, a downwardly convex arc plate. The friction-reducing part 21 is fixedly installed on the centrifugal side of the connecting part 22 relative to the axis of the outer tube 02. The working surface of the friction-reducing part 21 (e.g., the circumferential surface of the wheel and the lower surface of the arc plate) contacts the inner surface of the outer tube 02, avoiding contact between the outer surface of the connecting part 22 and the inner surface of the outer tube 02, thereby preventing wear on the outer tube 02.

[0026] Reference Figure 5 A protective gasket 23 is provided at the end of the receiving groove away from the inner tube 01. The protective gasket 23 is made of elastic rubber material, which is a conventional material and will not be described in detail. When the end of the inner tube 01 is inserted into the receiving groove, the end face of the inner tube 01 is pressed against the protective gasket 23 to prevent the bottom surface of the receiving groove from contacting the end face of the inner tube 01, thereby protecting the end face of the inner tube 01 from wear.

[0027] Reference Figure 8 and 9 The position adjustment of the inner tube 01 and the outer tube 02 is achieved using a limiting assembly 7. The limiting assembly 7 has a radial limiting structure 71 and an axial limiting structure 72. The limiting assembly 7 can be, for example, an integral limiting structure or a combined limiting structure.

[0028] An integrated limiting structure, such as an integrated worktable, has a first radial limiting structure 71 on its upper surface. This first radial limiting structure 71 is, for example, a first groove. The first groove is straight and its cross-section matches the curvature of the outer surface of the outer tube 02. The outer tube 02 is placed inside or above the first groove to prevent it from rolling freely. An axial limiting structure 72, such as a protrusion, has a protrusion at one end of the first groove near the second drive assembly 4. The end face of the outer tube 02 abuts against the side wall of the protrusion. When the inner tube 01 is inserted into the inner cavity of the outer tube 02, the end face of the outer tube 02 near the second drive assembly 4 abuts against the side wall of the protrusion. The protrusion provides horizontal leftward support to the outer tube 02, ensuring that the inner tube 01 can be inserted into the inner cavity of the outer tube 02.

[0029] Reference Figure 8 and 9 The combined limiting structure includes, for example, several support rods arranged in a linear array. Rollers are positioned at the same height at the top of each support rod, and the circumferential surface of each roller has a second groove. The cross-section of the second groove matches the curvature of the outer surface of the outer tube 02. The outer tube 02 is placed inside or above the second groove. The second radial limiting structure 71 is formed by sequentially connecting the top arc surfaces of several second grooves. The second axial limiting structure 72 includes, for example, a telescopic rod. The telescopic rod is located at the end of the support rod near the second drive assembly 4. The telescopic rod can extend and retract radially along the outer tube 02. When extended, the top sidewall of the telescopic rod abuts against the end face of the outer tube 02. The telescopic rod provides horizontal leftward support to the outer tube 02, ensuring that the inner tube 01 can be inserted into the inner cavity of the outer tube 02. The telescopic rod, for example, is an electric push rod, which is conventional existing technology in the industry and will not be described further.

[0030] The limiting component 7 can be fixed or movable. For example, an integrated worktable is placed on the floor of the processing workshop and fixed in position by its own weight (and the friction between the bottom surface of the worktable and the floor), or a support rod is fixed to the floor of the processing workshop by bolts. For example, the bottom surface of the integrated worktable is equipped with motor-driven wheels to enable movement, or the support rod is fixed to an electric drive flatbed cart by bolts to enable movement.

[0031] An electrically driven flatbed cart equipped with support rods can more conveniently transfer the inner tube 01 and the outer tube 02, enabling rapid loading and unloading. The fixed limiting assembly 7 utilizes a robotic arm or manual handling to load and unload the inner tube 01 and the outer tube 02.

[0032] Referring to Figure 8, the first drive assembly 3 and the second drive assembly 4 are reciprocating linear drive devices (such as electric push rods, pneumatic push rods, hydraulic push rods or combined push rods, such as electro-hydraulic push rods) or traveling trolleys. The traveling trolleys are mounted on guide rails on the floor of the processing workshop. The guide rails are arranged in the same direction as the limiting assembly 7, and the traveling trolleys can reciprocate along the guide rails.

[0033] Reference Figures 1-9 The following describes a method for installing a sleeve, the steps of which include: S1 Pipe Position Correction: The operator or robotic arm transports the inner tube 01 and the outer tube 02 separately and places them at the position of the limiting component 7, so that the outer tube 02 is connected to the radial limiting structure 71 and the axial limiting structure 72, and the inner tube 01 is connected to the radial limiting structure 71. Then, the positions of the inner tube 01 and the outer tube 02 are adjusted to make the inner tube 01 and the outer tube 02 coaxial and connected end to end. With S2 pipe end support, the operator or robotic arm mounts the end of the inner tube 01 furthest from the outer tube 02 onto the jaws of the first support assembly 1. The operator, robotic arm, or second drive assembly 4 mounts the second support assembly 2 onto the other end of the inner tube 01, and places the friction-reducing part 21 of the second support assembly 2 on the inner surface of the outer tube 02, allowing the second support assembly 2 to move freely along the inner surface of the outer tube 02. The first support assembly 1 and the second support assembly 2 respectively support the two ends of the inner tube 01 to offset part of the pressure between the inner tube 01 and the outer tube 02 (this pressure is generated by the gravity of the inner tube 01). S3 sleeve 0 is inserted, the first drive assembly 3 pushes the inner tube 01 to the right along the axial direction, at this time the axial limiting structure 72 abuts against the right end face of the outer tube 02 and applies a supporting force to the outer tube 02, the inner tube 01 and the outer tube 02 approach each other, until the inner tube 01 is inserted into the inner cavity of the outer tube 02; during the process of the first drive assembly 3 pushing to the right along the axial direction, the second drive assembly 4 moves at the same speed and in the same direction as the first drive assembly 3.

[0034] S4 tooling removal: Operators or robotic arms remove the first support assembly 1 and the second support assembly 2, and the first drive assembly 3 and the second drive assembly 4 move in the opposite direction to reset.

[0035] S5 unloading: The operator or robotic arm removes the installed sleeve 0 and moves it to the next process for subsequent processing.

[0036] Step S2, pipe end support, can be achieved in at least five ways: ① an operator or robotic arm can easily connect the second support assembly 2, which is not connected to the first connecting rod 5 and the second connecting rod 6 (i.e., ...). Figures 2-4 The second support component 2 shown is installed at the end of the inner tube 01, completing the installation of the second support component 2; ② The second drive component 4 moves to the left, driving the second support component 2 to move to the left and engage with the end of the inner tube 01 (as shown). Figure 6(As shown), complete the installation of the second support component 2; ③ (When the second support component 2 and the second connecting rod 6 are fixedly installed) The operator or robotic arm first moves the first drive component 3 to the left and removes the second connecting rod 6, then installs the inner tube 01 and reinstalls the second connecting rod 6 to complete the installation of the second support component 2; ④ (When the second support component 2 and the second connecting rod 6 are detachably installed) The operator or robotic arm first moves the first drive component 3 to the left, removes the second support component 2 from the end of the second connecting rod 6, then installs the inner tube 01 and reinstalls the second support component 2 to complete the installation of the second support component 2; ⑤ (When the second support component 2 and the second connecting rod 6 are connected by an electric slide rail) The operator or robotic arm first moves the first drive component 3 to the left, the electric slide rail drives the second support component 2 to the right, then installs the inner tube 01 and controls the electric slide rail to drive the second support component 2 to the left to reset, to complete the installation of the second support component 2.

[0037] Step S2, the tube end support, prevents friction between the inner tube 01 and the outer tube 02 during the subsequent insertion of the sleeve 0, thereby protecting the outer surface of the inner tube 01, the coating 011 on the outer surface of the inner tube 01, the inner surface of the outer tube 02, and the coating 011 on the inner surface of the outer tube 02. This prevents scratches on the final product of the sleeve 0 and improves product quality. In step S3, during the insertion of the sleeve 0, the first driving component pushes the inner tube axially, and the axial limiting structure abuts against the right end of the outer tube and applies a supporting force to the outer tube 02. The inner tube 01 and the outer tube 02 move closer together until the inner tube 01 is inserted into the inner cavity of the outer tube 02; thus, the sleeve 0 is installed. This invention has a simple process, convenient installation, and a high degree of automation. It reduces the skill requirements for forklift operators, improves work efficiency, and ensures product quality.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In conclusion, for those skilled in the art, any changes, modifications, substitutions, or variations made to this invention based on the guidance of this invention, without departing from the principles and spirit of this invention, still fall within the protection scope of this invention.

Claims

1. A method for installing a sleeve, characterized in that the steps include... include: S1 tube position correction, adjust the position of the inner tube (01) and the outer tube (02) until the inner tube (01) and the outer tube (02) are coaxial and connected end to end; S2 pipe end support, the end of the inner tube (01) away from the outer tube (02) is supported by the first support component (1), and the end of the inner tube (01) close to the outer tube (02) is supported by the second support component (2). The second support component (2) is provided with a friction-reducing part (21), and the friction-reducing part (21) is installed on the inner surface of the outer tube (02); S3 sleeve (0) is inserted and the inner tube (01) and / or the outer tube (02) are pushed axially so that the inner tube (01) is inserted into the inner cavity of the outer tube (02); S4 tooling removal: Remove the first support component (1) and the second support component (2). The first support component (1) is connected to the first drive component (3), which is used to push the inner tube (01) to move axially; The second support component (2) is connected to the first drive component (3) via a second connecting rod (6), which is a rigid rod in the shape of a straight rod; the second connecting rod (6) is detachably connected to the first support component (1), or the second connecting rod (6) is detachably connected to the second support component (2); When the first drive assembly (3) moves, the second connecting rod (6), the second support assembly (2) and the first drive assembly (3) move in the same direction and at the same speed to reduce the friction when the inner tube (01) is inserted into the outer tube (02); When the second connecting rod (6) is detachably connected to the first support assembly (1), the second connecting rod (6) is fixedly installed with the second support assembly (2); first, the first drive assembly (3) is moved to the left and the second connecting rod (6) is removed, then the inner tube (01) is connected to the first support assembly (1), and then the second connecting rod (6) is reconnected to the first drive assembly (3) to realize the tube end support in step S2; When the second connecting rod (6) and the second support assembly (2) are detachably connected, the second connecting rod (6) and the first support assembly (1) are fixedly connected; first, the first driving assembly (3) is moved to the left and the second support assembly (2) is removed from the end of the second connecting rod (6), then the inner tube (01) is connected to the first support assembly (1), and then the second support assembly (2) is reinstalled at the end of the second connecting rod (6) to realize the tube end support in step S2.

2. The sleeve installation method according to claim 1, characterized in that: The second support component (2) is provided with a connecting part (22), which is detachably connected to the end of the inner tube (01).

3. The sleeve installation method according to claim 2, characterized in that: The connecting part (22) is provided with a horizontally placed U-shaped receiving groove, the width of which is adapted to the thickness of the end side wall of the inner tube (01).

4. The sleeve installation method according to claim 3, characterized in that: A protective gasket (23) is provided at the end of the receiving groove away from the inner tube (01).

5. The sleeve installation method according to claim 4, characterized in that: During the tube position correction process in step S1, the position adjustment of the inner tube (01) and the outer tube (02) is achieved by using a limiting component (7).

6. The sleeve installation method according to claim 5, characterized in that: The limiting component (7) is provided with a radial limiting structure (71).

7. A sleeve installation method according to claim 6, characterized in that: The limiting component (7) is provided with an axial limiting structure (72).

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