Pipeline slipknot dismounting device

Abstract

The utility model relates to a pipeline slipknot disassembling and assembling device which comprises a clamping piece, the clamping piece is of a cylinder structure with a center through hole, and the side portion of the clamping piece is provided with a notch for a pipeline to penetrate through and enter the center through hole. A plurality of force adapting pieces which protrude outwards and are used for being connected with a force application tool are arranged on the first end face of the clamping piece, a polygonal clamping cavity is formed in the second end face of the clamping piece in an inward concave mode, and the axis of the clamping cavity coincides with the axis of the central through hole; the multiple edges of the clamping cavity are correspondingly attached to the multiple side faces of the slipknot nut during operation. The pipeline slipknot nut dismounting tool is simple in overall structure, low in cost, small in size, capable of being easily arranged on the slipknot nut in a sleeving mode through a pipeline, convenient to use, free of limitation of operation space when dismounting the slipknot nut, especially convenient to carry out dismounting operation in a narrow space, capable of greatly improving the dismounting operation efficiency of a pipeline slipknot and capable of reducing the labor intensity of workers. And therefore, the efficiency of treating the leakage fault of the pipeline slipknot of the motor train unit is improved.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle manufacturing technology, and in particular to a pipe fitting assembly and disassembly device. Background Technology

[0002] The piping system of a high-speed train is mainly divided into air piping and water system piping, which are mainly distributed in the undercarriage equipment and above the bogies. The air piping is mainly used for key components such as train braking, door opening and closing, and pantograph raising and lowering; the water system piping is used to provide water for the train's toilets and washrooms.

[0003] Leaks in train piping can severely impact operational safety and passenger comfort, making it crucial to ensure the airtightness of the air and water systems in high-speed trains. When a leak occurs, the pipe fittings must be removed to repair it. Because the pipes are located under the train's equipment and above the bogies, the limited working space makes it extremely difficult to operate with conventional tools such as flaps and pipe wrenches. This results in lengthy disassembly and reassembly of the pipe fittings. Furthermore, surrounding equipment often obstructs the movement of conventional tools, requiring them to be moved back and forth, necessitating the disassembly of surrounding equipment for further work. This leads to low efficiency and severely disrupts the normal maintenance sequence of the high-speed train. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a pipe fitting disassembly and assembly device with a simple structure, which is convenient for disassembly and assembly operations in a confined space and helps to improve the efficiency and quality of disassembly and assembly operations.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A pipe fitting assembly / disassembly device includes a snap-fit ​​component, which is a cylindrical structure with a central through hole. The snap-fit ​​component has a notch on its side for the pipe to pass through and enter the central through hole. Multiple outwardly protruding force adapters for connecting to a force-applying tool are provided on the first end face of the snap-fit ​​component. A polygonal engagement cavity is formed by an inward indentation on the second end face of the snap-fit ​​component. The engagement cavity and the central through hole have their axes coincident. During operation, multiple sides of the engagement cavity correspondingly engage with multiple sides of the snap-fit ​​nut.

[0007] Furthermore, the force adapter is provided with 4-6 on the first end face.

[0008] Furthermore, multiple force adapters are arranged at equal intervals around the central through hole.

[0009] Furthermore, the force adapter is a regular polygonal boss.

[0010] Furthermore, the force-applying tool is a ratchet wrench.

[0011] Furthermore, the inner diameter of the engagement cavity is larger than the inner diameter of the central through hole, forming an axial limiting surface at the step. The depth of the engagement cavity is greater than or equal to the thickness of the swivel nut, and the end face of the swivel nut abuts against the axial limiting surface.

[0012] Furthermore, the polygonal engagement cavity has N-1 sides, where N is the number of sides of the swivel nut.

[0013] Furthermore, it also includes a movable locking block, with radially extending slots on the guide surfaces on both sides of the notch of the locking member, and inserts extending outward from both sides of the movable locking block, the inserts being inserted into the slots accordingly, the movable locking block having a contact surface that fits against the side of the swivel nut after installation, the movable locking block sealing the notch and fitting against the side of the swivel nut after installation.

[0014] Furthermore, the snap-fit ​​component, force transfer component, and snap-fit ​​cavity are integrally milled from a cylindrical steel block.

[0015] In summary, the pipe fitting assembly / disassembly device provided by this utility model has the following advantages compared with the prior art:

[0016] (1) In this utility model, a snap-fit ​​component can be inserted into the pipeline and moved along the pipeline to the swivel nut, and snapped onto the outside of the movable nut. The operator can use a force-applying tool and the force transfer component on the snap-fit ​​component to realize the disassembly and assembly of the swivel nut. Not only is the overall structure simple and the cost low, but the snap-fit ​​component is also smaller in size than conventional tools and power tools. It can be easily put onto the swivel nut through the pipeline, making it convenient to use. When disassembling and assembling the swivel nut, it is not limited by the operating space. It is especially convenient to carry out disassembly and assembly operations in a narrow space, which can greatly improve the efficiency of pipeline swivel assembly and disassembly operations, thereby improving the efficiency of handling pipeline swivel leak faults in EMU trains.

[0017] (2) This utility model provides multiple outwardly protruding force adapters on the first end face of the snap-fit ​​component for use with the force application tool. This makes it particularly convenient for operators to select the force adapter that is easy to connect to the force application tool according to the specific conditions of the disassembly and assembly space on site, such as nearby pipelines and equipment. When installing the snap-fit ​​component, the operator does not need to consider the installation direction of the snap-fit ​​component. Moreover, during the tightening process, different force adapters can be replaced as needed. This not only reduces the disassembly and assembly time, but also makes it less likely to touch other pipelines and equipment, avoids damage to pipelines and equipment, and improves the quality of disassembly and assembly operations.

[0018] (3) The snap-fit ​​fittings in this utility model can be made according to the appearance size and structural shape of the pipeline, pipe joint, and swivel nut, making them convenient and flexible to use.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the disassembly and assembly device of this utility model;

[0023] Figure 2 yes Figure 1 Top view;

[0024] Figure 3 yes Figure 1 A bottom view;

[0025] Figure 4 yes Figure 3 AA sectional view.

[0026] In the picture:

[0027] 1. Snap-fit ​​component, 11. First end face, 12. Second end face, 2. Central through hole, 3. Notch, 31. Force adapter, 4. Snap-fit ​​cavity, 5. Edge, 51. Axial limiting surface, 6.

[0028] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" 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 utility model 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 utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1:

[0033] like Figures 1 to 4 As shown, this utility model provides a pipe fitting assembly / disassembly device, including a snap-fit ​​component 1. The snap-fit ​​component 1 is a cylindrical structure with a central through hole 2. The side of the snap-fit ​​component 1 has a notch 3 for the pipe (not shown in the figure) to pass through and enter the central through hole 2. Multiple outwardly protruding force adapters 4 are provided on the first end face 11 of the snap-fit ​​component 1 for connecting with a force-applying tool. The force adapters 4 are detachably connected to the force-applying tool. A polygonal locking cavity 5 is recessed inward on the second end face 12 of the snap-fit ​​component 1. The locking cavity 5 and the central through hole 2 have their axes coincident. During operation, multiple sides 51 of the locking cavity 5 are correspondingly attached to multiple sides of the snap-fit ​​nut.

[0034] During installation, the operator can conveniently insert the snap-fit ​​1 from the pipeline and move it along the pipeline to the swivel nut. The snap-fit ​​1 is snapped onto the outside of the swivel nut. Since the multiple sides 51 of the engagement cavity 5 correspond to the multiple sides of the swivel nut during operation, a relatively fixed relationship is formed between the snap-fit ​​1 and the swivel nut. The operator can then further tighten the swivel nut by using a force-applying tool in conjunction with the force converter 4 on the snap-fit ​​1, thus realizing the installation and removal of the swivel nut.

[0035] The device has a simple overall structure, requiring only one snap-fit ​​component 1. It can be installed at any position on the pipeline and easily moved along the pipeline to fit onto the swivel nut. It can be used with a force-applying tool to complete the installation and removal of the swivel nut. Not only is the structure simple and low-cost, but it is also easy to use. Compared with conventional tools and power tools, it is also smaller in size. When rotating the swivel nut, it is not limited by the operating space, making it particularly convenient for installation and removal operations in confined spaces. It can greatly improve the efficiency of pipeline swivel installation and removal operations, thereby improving the efficiency of handling pipeline swivel leak faults in high-speed trains.

[0036] In this embodiment, it is further preferred that 4-6 force adapters 4 are provided on the first end face 11 of the snap-fit ​​1, and even more preferably, 5 force adapters 4 are provided. This not only helps to leave sufficient operating space for the force application tool to be disassembled and assembled with the force adapters 4, but also makes it particularly convenient for operators to select the force adapters 4 that are easy to connect to the force application tool according to the specific conditions of the disassembly and assembly space on site, such as nearby pipelines and equipment. When installing the snap-fit ​​1, the operator does not need to consider the installation direction of the snap-fit ​​1, and during the tightening process, different force adapters 4 can be replaced as needed. This not only reduces the disassembly and assembly time, but also makes it less likely to touch other pipelines and equipment, avoiding damage to pipelines and equipment, thereby improving the quality of the snap-fit ​​disassembly and assembly operation.

[0037] In this embodiment, multiple force adapters 4 are directly provided on the first end face 11 of the snap-fit ​​1. This allows the operator to use other tools with long handles to cooperate with the force adapters 4, or to directly use a force-applying tool for turning the snap-fit ​​1 to insert the snap-fit ​​1 into the pipeline at a suitable position, and then move the snap-fit ​​1 along the pipeline. This eliminates the need for the operator to reach under the vehicle to install the snap-fit ​​1, making the operation more convenient.

[0038] In this embodiment, the multiple force adapters 4 are preferably arranged around the central through hole 2 at equal intervals, which helps to reduce the processing difficulty of the snap-fit ​​1 and reduce the manufacturing cost.

[0039] In this embodiment, it is further preferred that the force adapter 4 has a regular polygonal boss structure. For example, if a regular hexagonal boss structure is adopted, the force application tool is preferably a ratchet wrench. By using the ratchet wrench in conjunction with the regular hexagonal boss, the slip knot nut can be tightened. If a 15mm ratchet wrench is used as the force application tool, the boss is machined into a regular hexagonal boss with a height of 10mm and a width of 15mm.

[0040] In this embodiment, it is further preferred that the polygonal engaging cavity 5 has N-1 sides, where N is the number of sides of the swivel nut. For example, if the swivel nut is an octagonal nut, then the engaging cavity 5 has 7 sides. This ensures the effective contact area between the engaging member 1 and the swivel nut, preventing relative sliding between the engaging member 1 and the swivel nut in the circumferential direction during tightening. This ensures the quality of the disassembly and assembly work, reduces work time, and prevents damage to the swivel nut due to relative sliding.

[0041] In this embodiment, preferably, the width of the notch 3 is greater than the outer diameter of the pipe and less than the diameter of the central through hole 2. More preferably, the width of the notch 3 is equal to the width of one side of the swivel nut. Of course, the width of the notch 3 can also be slightly greater than the width of one side of the swivel nut. This facilitates the operator in inserting the snap-fit ​​1 from the pipe, allowing it to pass over the pipe joint and lock onto the swivel nut, and also prevents the snap-fit ​​1 from falling off the swivel when moved to its position. For snap-fit ​​1 used to install or remove swivel nuts on DN20 pipes, the central through hole 2 is machined into a φ38mm hole with a depth of 10mm, and the notch 3 is machined to a width of 30mm.

[0042] In this embodiment, it is further preferred that the inner diameter of the engaging cavity 5 is larger than the inner diameter of the central through hole 2. A step is formed on one side of the engaging cavity 5 (the side placed inside the central through hole 2), and an axial limiting surface 6 is formed at the step. When the engaging member 1 is moved along the pipeline to the swivel nut, after the movable nut is embedded in the engaging cavity 5, it can abut against the step, thereby restricting the axial movement of the engaging member 1. This ensures the connection stability between the engaging member 1 and the swivel nut, ensuring that the engaging member 1 will not move axially during the tightening process, which helps to shorten the operation time and ensure the operation quality.

[0043] In this embodiment, it is further preferred that the depth of the locking cavity 5 is greater than or equal to the thickness of the swivel nut. This ensures that the swivel nut is completely embedded in the locking cavity 5, guaranteeing the contact area between the locking member 1 and the swivel nut. Consequently, it prevents relative sliding between the locking member 1 and the swivel nut during tightening, thus preventing damage to the swivel nut. For example, when it is necessary to install or remove the swivel nut on a DN20 pipeline, the locking cavity 5 is machined into an inner octagonal groove structure with a depth of 22mm and a width of 50.5mm.

[0044] In this embodiment, it is further preferred that the snap-fit ​​component 1, the force transfer component 4, and the snap-fit ​​cavity 5 are integrally milled from a steel block, such as preferably using 45# steel. This ensures the structural strength of the snap-fit ​​component 1, reduces processing difficulty and manufacturing costs, and also helps ensure processing accuracy, thereby guaranteeing the quality and efficiency of the disassembly and assembly of the swivel nut.

[0045] The manufacturing process of snap-fit ​​fitting 1 is as follows, taking the disassembly and assembly of the DN20 pipe union nut as an example:

[0046] 1. It is manufactured using a Φ78mm long 40mm 45# steel cylinder.

[0047] 2. Mill five regular hexagonal bosses, each 10mm high and 15mm wide, along the circumference of the first end face 11 of the cylinder (suitable for 15mm ratchet wrenches).

[0048] 3. A locking cavity 5 with an inner octagonal groove shaped with a depth of 22mm and a width of 50.5mm is milled on the second end face 12 of the cylinder.

[0049] 4. A φ38mm, 10mm deep circular hole is milled in the center of the cylinder to form a central through hole 2.

[0050] 5. Mill a notch 30mm wide on the side of the cylinder.

[0051] 6. Make an R-angle at the junction of the guide surface 31 on both sides of the notch 3 and the outer side of the cylinder, thus completing the processing of the snap-fit ​​part 1.

[0052] The operation method of connector 1 is as follows:

[0053] 1. When dealing with pipeline leakage faults in EMU trains, select an easy-to-operate location, slip the clamping piece 1 onto the pipeline through the 30mm notch 3 on the side of the slip nut, and then drag the clamping piece 1 along the pipeline to the slip nut.

[0054] 2. Place the engaging cavity 5 of the snap-fit ​​component 1 onto the swivel nut, so that the seven sides of the engaging cavity 5 are in contact with the seven corresponding side surfaces of the swivel nut.

[0055] 3. Using a quick-release ratchet wrench, place it on one of the regular hexagonal force adapters 4 of the snap-fit ​​1, and operate the ratchet wrench to disassemble and assemble the pipe fitting.

[0056] This disassembly and assembly device can be inserted into the pipeline through a snap-fit ​​component 1 and moved along the pipeline to the swivel nut, where it snaps onto the outside of the swivel nut. The operator can disassemble and assemble the swivel nut by using a force-applying tool in conjunction with the force transfer component 4 on the snap-fit ​​component 1. Not only is the overall structure simple and low-cost, but the snap-fit ​​component 1 is also smaller in size than conventional tools such as flaps, pipe wrenches, and power tools. It can be easily slipped onto the swivel nut through the pipeline, making it simple to operate and convenient to use. It is not limited by the operating space when disassembling and assembling swivel joints, making it particularly convenient for disassembly and assembly operations in confined spaces. This greatly saves the time for disassembling and assembling swivel joints in pipelines, significantly improves the efficiency of disassembly and assembly operations of swivel joints in pipelines, and thus improves the efficiency of handling swivel joint leakage faults in high-speed trains.

[0057] The disassembly and assembly device has multiple outwardly protruding force adapters 4 on the first end face 11 of the snap-fit ​​component 1 for use with force application tools. This makes it particularly convenient for operators to select force adapters that are easy to connect to the force application tools according to the specific conditions of the disassembly and assembly space on site, such as nearby pipelines and equipment. When installing the snap-fit ​​component, the operator does not need to consider the installation direction of the snap-fit ​​component 1. Moreover, during the tightening process, different force adapters 4 can be replaced as needed. This not only reduces disassembly and assembly time but also makes it less likely to touch other pipelines and equipment, avoiding damage to pipelines and equipment and improving the quality of disassembly and assembly operations.

[0058] The snap-fit ​​components in this disassembly and assembly device can be manufactured according to the appearance dimensions and structural shape of pipelines, pipe fittings, and union nuts, making them convenient and flexible to use.

[0059] Example 2:

[0060] Unlike Embodiment 1, this embodiment also includes a movable locking block (not shown in the figure) that can be detached and installed separately. This movable locking block is used to seal the notch 3 so that the number of sides of the locking cavity 5 is the same as the number of sides of the swivel nut. This not only has the advantages described in Embodiment 1, but also further ensures the stability and firmness of the connection between the locking member 1 and the movable nut.

[0061] In this embodiment, radially extending slots (not shown in the figure) are provided on the guide surfaces 31 on both sides of the notch 3 of the snap-fit ​​component 1. The main body of the movable snap-fit ​​block can be a cuboid structure or a T-shaped structure, with inserts extending outward from both sides of the movable snap-fit ​​block. The movable snap-fit ​​block has a contact surface that fits against the side of the swivel nut after installation. Preferably, the area of ​​the contact surface is the same as the area of ​​one side of the swivel nut, or the length of the contact surface is the same as the length of one side of the swivel nut. Of course, the length of the contact surface can also be slightly shorter than the length of one side of the swivel nut, as long as it ensures that the movable snap-fit ​​block and the remaining side of the swivel nut have a certain contact area.

[0062] During installation, first, install the snap-fit ​​part 1 onto the pipeline. Then, insert the two side inserts of the movable snap-fit ​​block into the slots on both sides of the notch 3, so that the movable snap-fit ​​block seals the notch 3. After installation, the contact surface of the movable snap-fit ​​block is in contact with one side of the swivel nut. After sealing, all sides of the swivel nut can be in contact with the edge of the snap-fit ​​cavity 5. Next, move the snap-fit ​​part 1 with the movable snap-fit ​​block installed along the pipeline to the swivel nut and snap it onto the outside of the swivel nut. Finally, use a ratchet wrench in conjunction with the force adapter 4 on the snap-fit ​​part 1 to achieve the movable assembly and disassembly.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pipe fitting assembly / disassembly device, characterized in that: The device includes a snap-fit ​​connector, which is a cylindrical structure with a central through hole. The snap-fit ​​connector has a notch on its side for a pipe to pass through and enter the central through hole. Multiple outwardly protruding force adapters for connecting with a force-applying tool are provided on the first end face of the snap-fit ​​connector. A polygonal engagement cavity is formed by inward indentation on the second end face of the snap-fit ​​connector. The engagement cavity and the central through hole have their axes coincident. During operation, multiple sides of the engagement cavity are correspondingly attached to multiple sides of the swivel nut.

2. The line hitch disassembling device according to claim 1, characterized in that: The force adapter has 4-6 components on its first end face.

3. The line hitch disassembly device according to claim 1, characterized in that: Multiple force adapters are arranged at equal intervals around the central through hole.

4. The device according to any one of claims 1-3, characterized in that: The force adapter is a regular polygonal boss.

5. The line knot dismounting device according to claim 4, characterized in that The tool used to apply force is a ratchet wrench.

6. The line hitch disassembly device according to claim 1, characterized in that: The inner diameter of the engagement cavity is larger than the inner diameter of the central through hole, forming an axial limiting surface at the step. The depth of the engagement cavity is greater than or equal to the thickness of the swivel nut, and the end face of the swivel nut abuts against the axial limiting surface.

7. The device according to claim 1 or 6, characterized in that: The polygonal locking cavity has N-1 sides, where N is the number of sides of the swivel nut.

8. The line hitch disassembly device according to claim 7, characterized in that: It also includes a movable locking block, which has radially extending slots on both sides of the notch of the locking member, and inserts extending outward from both sides of the movable locking block, which are inserted into the slots accordingly. The movable locking block has a mating surface that fits against the side of the swivel nut after installation. After installation, the movable locking block seals the notch and fits against the side of the swivel nut.

9. The line hitch disassembly device according to claim 1, characterized in that: The snap-fit ​​component, force transfer component, and snap-fit ​​cavity are integrally milled from a cylindrical steel block.

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