Union dismounting and mounting device and union dismounting and mounting method

Abstract

The invention relates to the technical field of union assembling, in particular to a union disassembling and assembling device and a union disassembling and assembling method.The union disassembling and assembling device comprises a clamping mechanism and an executing mechanism and has the beneficial effects that when a clamping arm is located at a traction position, acting force applied to a connecting rod by a telescopic end can enable the clamping arm to pull a clamping base to clamp a pipeline, and therefore the pipeline is disassembled and assembled; and the telescopic driving piece drives the sliding seat and the loading piece to twist the union through the counter-acting force of the connecting rod to the body. According to the device, the acting force and the counter-acting force of the telescopic driving part are ingeniously utilized, the device structure is simplified, bending moment is prevented from being generated on the telescopic driving part, and unnecessary unbalance loading influence is reduced. Meanwhile, the length of a power arm, close to one side of the telescopic driving piece, of the connecting rod is larger than that of a resisting arm, close to one side of the clamping arm, of the connecting rod, so that the output torque is increased on the premise that other conditions are not changed, and sufficient friction force is provided after the clamping mechanism clamps the pipeline; and therefore, the body of the telescopic driving component can obtain enough counter-acting force to twist the union, and the use reliability of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of union assembly, and in particular to a union disassembly and assembly device and a union disassembly and assembly method. Background Art

[0002] In energy industries like petroleum, chemicals, and natural gas, as well as numerous other industries involving fluid transportation, pipeline systems are critical infrastructure for maintaining production operations. Unions, coaxial pipe structures, are currently primarily disassembled manually, a traditional method that presents numerous drawbacks. Manual assembly and disassembly is time-consuming and labor-intensive, particularly during large-scale pipeline repair or replacement tasks. This significantly prolongs project timelines and increases labor costs. It is also particularly challenging for unions operating in harsh environments or with tightly connected connections. Furthermore, the current disassembly and assembly method primarily relies on hammering, which results in varying torque levels for different operators and, consequently, different tightening torques for the unions. Furthermore, the impact of hammering can cause plastic deformation of the union nut and compromise the overall sealing of the pipeline, creating significant uncontrollable factors. This not only requires significant physical effort on the part of the operator, but also risks damaging the union or pipeline due to improper handling, leading to safety incidents such as leaks, production stoppages, and production losses. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a union disassembly and assembly device and a union disassembly and assembly method, which solve the technical problems of low efficiency and poor effect in manual disassembly and assembly of unions in the prior art.

[0005] (2) Technical solution

[0006] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] In a first aspect, the present invention provides a union assembly and disassembly device comprising a clamping mechanism and an actuator. The clamping mechanism comprises a fixed seat and a clamping seat, each hinged at its lower end along a first axis. The upper ends of the fixed seat and the clamping seat define a pipe clamping opening, and a pipe clamping channel is formed between the fixed seat and the clamping seat. The actuator comprises a connecting rod, a clamping arm, a telescopic drive member, a slide, and a loading member. The slide is slidably connected to the fixed seat along the circumference of the clamping channel. The telescopic end and body of the telescopic drive member are hinged to the upper end of the connecting rod and the slide along the first axis. The loading member is fixedly connected to the slide. The middle portion of the connecting rod is hinged to the fixed seat along the first axis, and the lower portion is connected to the clamping arm. The clamping arm is capable of switching between a pulling position, in which it is connected to the clamping seat, and a disengaged position, in which it is disengaged from the clamping seat. When the clamping arm is in the pulling position, the force applied by the telescopic end to the connecting rod, which causes the clamping arm to pull the clamping seat to clamp the pipe, and the reaction force exerted by the connecting rod on the body, causes the telescopic drive member to drive the slide and the loading member to twist the union. Among them, the line connecting the projection points of the two hinge shafts on the main body and the telescopic end along the direction of the first axis coincides with the axis of the telescopic drive member, and the length of the power arm on the side of the connecting rod close to the telescopic drive member is greater than the length of the resistance arm on the side of the connecting rod close to the clamping arm.

[0008] In one technical solution of the present invention, the slide seat is retracted in a direction close to the connecting rod, and the side of the body of the telescopic driving member close to the connecting rod is hinged to the slide seat along the first axis.

[0009] In one technical solution of the present invention, two sets of loading elements are provided and fixedly connected to the front and rear sides of the slide, respectively. The union assembly and disassembly device can be switched between a tightening and loosening position. In the tightening position, the clamping mechanism clamps one axial side of the union, allowing the loading element proximate the union to tighten the union. In the loosening position, the clamping mechanism clamps the other axial side of the union, allowing the loading element proximate the union to loosen the union.

[0010] In one technical solution of the present invention, the loading member includes a cantilever extending forward and backward.

[0011] In a technical solution of the present invention, the loading member further comprises a pressing block axially sleeved on the cantilever, and a torsional plane of the wing nut of the extrusion union is formed on the pressing block.

[0012] In one embodiment of the present invention, a clamping arm is hingedly connected to the lower end of the connecting rod along a first axis, and a traction portion is formed on the clamping arm. A connecting portion is formed on the clamping seat, and when the clamping arm swings along the hinge axis with the connecting rod, it can connect with the traction portion to switch to a traction position, and can also disconnect from the traction portion to switch to a separation position.

[0013] In one technical solution of the present invention, the traction portion is a rod extending forward and backward, the connecting portion is a groove provided on the clamping seat, and the upper side wall of the groove can hook the rod.

[0014] In one technical solution of the present invention, the actuator further includes a pre-tightening member adapted to apply a force to the clamping arm to swing toward the pulling position. The pre-tightening member is a tension spring, with both ends of the pre-tightening member respectively connected to the connecting rod and the clamping arm.

[0015] One technical solution of the present invention further includes a control terminal supported on the slide or the telescopic drive member. The control terminal can control the extension or contraction of the telescopic drive member. Alternatively, the control terminal can also regulate the driving force of the telescopic drive member, thereby regulating the torsional torque of the loading member on the union.

[0016] In a second aspect, the present invention provides a union disassembly and assembly method, which is applied to the union disassembly and assembly device in any of the above technical solutions, and the method comprises:

[0017] S1: Switch the clamping arm to the separated position and open the clamping opening.

[0018] S2: Make the pipe pass through the clamping opening and enter the clamping channel.

[0019] When tightening the union, the loading piece is positioned on the clockwise side of the union's wing nut and can abut against the union's wing nut clockwise. When loosening the union, the loading piece is positioned on the counterclockwise side of the union's wing nut and can abut against the union's wing nut counterclockwise.

[0020] S3: Switch the clamping arm to the pulling position and continue to extend the telescopic end until the union is tightened or loosened.

[0021] (3) Beneficial effects

[0022] The beneficial effects of the present invention are as follows: Compared with the manual hammering method, after the device is installed on the pipeline near the union, the union can be rotated to tighten or loosen it by simply controlling the telescopic drive member to extend and retract. This has a fast response speed, low operational difficulty, and does not require excessive physical exertion, greatly reducing labor intensity. Since manual hammering of the union is no longer required, the operating space of the device is not easily restricted by space, and the union can be disassembled or installed even in a small space, greatly improving the efficiency of construction operations and adaptability to application scenarios.

[0023] The device provides driving force through a telescopic drive member, which can ensure that the torque achieved during assembly and disassembly of the device is within a constant range, thereby improving the torsional safety of the union and ensuring that the union can obtain sufficient tightening torque, thereby preventing the possibility of pipeline leakage and avoiding damage to the pipeline and difficulty in disassembly when the torque is too large.

[0024] The device does not cause impact to the wing nut of the union during the process of twisting the union, but continuously twists it. Therefore, the force on the wing nut is stable and no impact load is applied to the wing nut. In this way, the wing nut will not produce plastic deformation, thereby extending its service life.

[0025] The device cleverly utilizes the action and reaction forces of the telescopic drive member, and uses the action force to enable the clamping mechanism to clamp the pipe, and uses the reaction force to enable the loading member to twist the union. This can be achieved with a set of telescopic drive members, which simplifies the device structure, improves the structural compactness of the device, and reduces the cost of the device.

[0026] The line formed by the two hinge points between the main body of the telescopic drive and its telescopic end has its projection in the fore-aft direction coincident with the axis of the main body of the drive. This ensures consistent force direction, avoids bending moments on the telescopic drive, and reduces the effects of unnecessary off-center loading. Furthermore, the length of the power arm on the side of the connecting rod closest to the telescopic drive is greater than the length of the resistance arm on the side closest to the clamping arm. This, all other conditions remaining unchanged, amplifies the output torque and ensures sufficient friction after the clamping mechanism clamps the pipe. This, in turn, provides the main body of the telescopic drive with a sufficient reaction force to the torsional union, improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the union disassembly and assembly device of the present invention;

[0028] Figure 2 This is the second structural diagram of the union disassembly and assembly device of the present invention;

[0029] Figure 3 This is the third structural diagram of the union disassembly and assembly device of the present invention;

[0030] Figure 4 Schematic diagram of the cross-sectional structure of the pliers teeth position of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the slot of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the union disassembly and assembly device, the union and the pipeline of the present invention.

[0033] [Description of Reference Numerals]

[0034] 100: Union; 200: Pipe; 300: Wing nut;

[0035] 1: Clamping mechanism; 11: Fixed seat; 12: Clamping seat; B: Connecting part; 13: Clamp teeth; 14: End plate; C: Slot; D: Stepped part;

[0036] 2: actuator; 21: connecting rod; 22: clamping arm; A: traction part; 23: telescopic drive member; 23a: telescopic end; 23b: body;

[0037] 24: Slide; 25: Loading part; 251: Cantilever; 26: Preload part;

[0038] E: Slider; F: Slide;

[0039] 3: Control terminal. DETAILED DESCRIPTION

[0040] In order to better explain the present invention, so as to facilitate understanding, the following Figures 1-6 , the present invention is described in detail through specific implementation methods. Figure 1 The orientation is referenced.

[0041] Example 1:

[0042] Reference Figures 1-6 An embodiment of the present invention provides a union assembly and disassembly device, comprising a clamping mechanism 1 and an actuator 2. The clamping mechanism 1 comprises a fixed seat 11 and a clamping seat 12, the lower ends of which are hinged along a first axis, and the upper ends of which form a clamping opening for the pipe 200, and a clamping channel for the pipe 200 is formed therebetween. The actuator 2 comprises a connecting rod 21, a clamping arm 22, a telescopic drive member 23, a slide 24, and a loading member 25. The slide 24 is slidably connected to the fixed seat 11 along the circumference of the clamping channel. The telescopic end 23a and the main body 23b of the telescopic drive member 23 are hinged to the upper end of the connecting rod 21 and the slide 24 along the first axis. The loading member 25 is fixedly connected to the slide 24. The middle portion of the connecting rod 21 is hinged to the fixed seat 11 along the first axis, and the lower portion is connected to the clamping arm 22. The clamping arm 22 can switch between a traction position connected to the clamping seat 12 and a separation position detached from the clamping seat 12. When the clamping arm 22 is in the pulling position, the telescopic end 23a extends and applies a force to the connecting rod 21, causing the clamping arm 22 to pull the clamping seat 12 to clamp the pipe 200. The reaction force exerted by the connecting rod 21 on the main body 23b causes the telescopic drive member 23 to drive the slide 24 and the loading member 25 to twist the union 100. The line connecting the projections of the two hinge shafts on the main body 23b and the telescopic end 23a along the first axis coincides with the projection of the axis of the telescopic drive member 23 along the first axis. The length of the power arm on the side of the connecting rod 21 close to the telescopic drive member 23 is greater than the length of the resistance arm on the side of the connecting rod 21 close to the clamping arm 22.

[0043] In the description of the present invention, the first axis is an axis parallel to the rotation axis of the union 100 .

[0044] In this embodiment, compared to manual hammering, after the device is installed on the pipe 200 near the union 100, simply controlling the telescopic drive member 23 to extend or retract rotates the union 100 to tighten or loosen it. This provides fast response, low operational difficulty, and minimal physical exertion, significantly reducing labor intensity. Because manual hammering of the union 100 is no longer required, the device's operating space is less restricted, enabling removal or installation of the union 100 even in confined spaces. This significantly improves operational efficiency and adaptability to various application scenarios.

[0045] The traditional manual hammering method results in different degrees of tightening of the union 100 due to different people and different tools. This may result in the locking torque of the union 100 not being reached or being too high. Under-standard torque may cause leakage in the pipe 200, while excessive torque may make the union 100 difficult to disassemble or cause damage to the union 100 during the tightening or disassembly process. The present device provides driving force through the telescopic drive member 23, which can ensure that the torque achieved by the device during assembly and disassembly is within a constant range, thereby improving the torsional safety of the union 100 and ensuring that the union 100 can obtain sufficient tightening torque, thereby preventing the possibility of leakage in the pipe 200 and avoiding damage to the pipe 200 and difficulty in disassembly when the torque is too high.

[0046] Traditionally, when hammering the wing nut 300 manually, the impact causes it to continuously deform, making its shape increasingly rounded. This makes hammering increasingly difficult, creating a vicious cycle that significantly reduces the service life of the union 100. This device, when twisting the union 100, does not impact the wing nut 300, but instead continuously twists it. As a result, the force on the wing nut 300 is stable, and no impact load is applied to it. This prevents plastic deformation and extends its service life.

[0047] The device cleverly utilizes the action and reaction forces of the telescopic drive member 23, and uses the action force to enable the clamping mechanism 1 to clamp the pipe 200, and uses the reaction force to enable the loading member 25 to twist the union 100. This can be achieved with a set of telescopic drive members 23, which simplifies the device structure, improves the structural compactness of the device, and reduces the cost of the device.

[0048] The line formed by the two hinge points between the main body 23b of the telescopic driver 23 and its telescopic end 23a, projected in the fore-aft direction, coincides with the axis of the driver body 23b. This ensures consistent force direction, avoids bending moments on the telescopic driver 23, and reduces the effects of unnecessary off-center loading. Furthermore, the length of the power arm of the connecting rod 21 on the side closest to the telescopic driver 23 is greater than the length of the resistance arm on the side closest to the clamping arm 22. This, all other conditions remaining unchanged, amplifies the output torque and ensures sufficient friction after the clamping mechanism 1 clamps the pipe 200. This, in turn, provides the main body 23b of the telescopic driver with a sufficient reaction force to torsion union 100, thereby enhancing the reliability of the device.

[0049] Specifically, the clamping mechanism 1 includes a fixing seat 11 and a clamping seat 12, the lower ends of which are hinged, and a clamping opening for accommodating the pipe 200 is formed between the upper ends, and together constitute a clamping channel to achieve reliable clamping of pipes 200 of different specifications.

[0050] The middle part of the connecting rod 21 is also hinged to the fixed seat 11 along the first axis, serving as the fulcrum of the entire transmission system, and its lower part is connected to the clamping arm 22. The clamping arm 22 can switch between two positions: one is a traction position in which it remains connected to the clamping seat 12, and the other is a release position in which it is separated from the clamping seat 12. When the clamping arm 22 is in the traction position, the telescopic drive member 23 transmits the force to the clamping arm 22 through the connecting rod 21, thereby driving the clamping seat 12 to move closer to the fixed seat 11, thereby achieving the clamping action of the pipe 200. At the same time, the connecting rod 21 will also generate a reaction force on the main body 23b of the telescopic drive member 23, thereby pushing the slide 24 and the loading member 25 to rotate around the axis together, applying a torsional force to the union 100, and completing the disassembly or assembly operation.

[0051] Specifically, the length ratio of the power arm to the resistance arm may be 2:1 or 2.5:1, preferably greater than or equal to 2:1, to ensure that the clamping device obtains sufficient clamping force.

[0052] Example 2:

[0053] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0054] The slide 24 is retracted in a direction close to the connecting rod 21 , and a side of the body 23 b of the telescopic driving member 23 close to the connecting rod 21 is hinged to the slide 24 along a first axis.

[0055] In this embodiment, by allowing the slide 24 to retract toward the connecting rod 21, the compactness of the device can be improved, further reducing the device's space usage and improving its adaptability to confined spaces. The body 23b of the telescopic drive member 23, located near the connecting rod 21, is hingedly connected to the slide 24 along a first axis, providing a basis for the slide 24 to retract toward the connecting rod 21. This retraction of the slide 24 does not negatively impact the device's structural functionality.

[0056] Example 3:

[0057] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0058] The loading elements 25 are provided in two sets and are fixedly connected to the front and rear sides of the slide 24, respectively. The union assembly and disassembly device can be switched between a tightening and loosening position. In the tightening position, the clamping mechanism 1 clamps one axial side of the union 100, allowing the loading elements 25 near the union 100 to tighten the union 100. In the loosening position, the clamping mechanism 1 clamps the other axial side of the union 100, allowing the loading elements 25 near the union 100 to loosen the union 100.

[0059] In this embodiment, two loading members 25 are provided, one for tightening the union 100 and the other for loosening the union 100. In addition, in the tightening clamping position and the loosening clamping position, it is only necessary to clamp the clamping mechanism 1 on different axial sides of the union 100 and make the telescopic driving member 23 extend in opposite directions, thereby improving the efficiency of the union disassembly and assembly device during use.

[0060] Example 4:

[0061] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0062] The loader 25 includes a cantilever 251 extending forward and backward. The cantilever 251 is a rod body capable of moving the union 100, that is, the cantilever 251 can be set to a rod shape. The wing nut 300 of the union 100 is pressed by the cantilever 251 to twist the union 100. This solution has a simple structure, low cost and high reliability.

[0063] Example 5:

[0064] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0065] The loader 25 also includes a pressure block axially mounted on the cantilever 251. This pressure block forms a torsion plane that compresses the union 100 and the wing nut 300. Because the pressure block also rotates axially, the torsion plane maintains surface contact with the union 100. Compared to directly compressing the union 100 through the cantilever 251, this disperses contact stress and reduces the risk of deformation of the union 100 and the wing nut 300.

[0066] Example 6:

[0067] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0068] The clamping arm 22 is hinged to the lower end of the connecting rod 21 along a first axis, and the clamping arm 22 forms a traction portion A. The clamping base 12 is formed with a connecting portion B. When the clamping arm 22 swings along the hinge axis with the connecting rod 21, it can connect with the traction portion A to switch to the traction position, and can also disconnect from the traction portion A to switch to the separation position.

[0069] In this embodiment, the clamping arm 22 is connected to the lower end of the connecting rod 21 via a hinge structure arranged along a first axis, allowing the clamping arm 22 to swing about the hinge axis. A traction portion A is provided on the clamping arm 22, and a corresponding connection portion B is provided on the clamping base 12. When the clamping arm 22 swings relative to the connecting rod 21, the traction portion A can be detachably connected to the connection portion B on the clamping base 12, thereby switching the clamping arm 22 to a traction position in which it is linked to the clamping base 12. Conversely, when the clamping arm 22 swings to a certain angle, the traction portion A separates from the connection portion B, causing the clamping arm 22 to enter a separated position, disengaged from the clamping base 12.

[0070] This structural design enables flexible switching of the clamping arm 22 between different operating states: in the pulling position, the clamping arm 22 drives the clamping seat 12 in motion, thereby clamping the pipe 200. In the detached position, the clamping arm 22 is disconnected from the clamping seat 12, facilitating quick release of the clamping state or device adjustment, improving operational convenience and efficiency. Furthermore, thanks to the articulated swinging mechanism, the entire switching process is smooth and reliable, enhancing the stability and service life of the device.

[0071] Example 7:

[0072] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0073] The traction portion A is a rod extending forward and backward, and the connection portion B is a groove provided on the clamping seat 12 , and the upper side wall of the groove can hook the rod.

[0074] In this embodiment, the pulling portion A is designed as a rod extending forward and backward. This structure facilitates docking and separation with the connecting portion B on the clamping base 12 when the clamping arm 22 swings. The connecting portion B is a groove formed on the clamping base 12. The groove is specially designed so that its upper side wall can hook the rod, thereby achieving a secure connection between the clamping arm 22 and the clamping base 12.

[0075] When the clamping arm 22 needs to be switched to the pulling position, the clamping arm 22 swings along the hinge point at its lower end along the first axis, allowing the pulling portion A to accurately enter the groove on the clamping seat 12. The upper side wall of the groove hooks the rod body, ensuring that the clamping arm 22 is tightly connected to the clamping seat 12. At this time, as the telescopic drive member 23 moves, the connecting rod 21 transmits the applied force to the clamping arm 22, which in turn drives the clamping seat 12 to move toward the fixed seat 11, effectively clamping the pipe 200.

[0076] Conversely, when the clamping arm 22 needs to be switched to the disengaged position, it swings in the opposite direction about the hinge point, disengaging the traction portion A from the groove of the clamping base 12 and releasing the connection between the two. This design not only simplifies the connection and disconnection process between the clamping arm 22 and the clamping base 12, but also ensures a secure connection and reliable operation, thereby improving the efficiency and safety of the entire union assembly and disassembly device. Furthermore, the mechanical hook locking mechanism ensures high stability and durability, even under heavy loads.

[0077] Example 8:

[0078] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0079] The actuator 2 further includes a pre-tightening member 26 adapted to apply a force to the clamping arm 22 to swing toward the pulling position. The pre-tightening member 26 is a tension spring, with two ends of the pre-tightening member 26 connected to the connecting rod 21 and the clamping arm 22, respectively.

[0080] In this embodiment, the preload element 26 applies a preload force to the clamp arm 22, causing it to swing toward the traction position. This ensures that the clamp arm 22 automatically moves toward the traction position connected to the clamp seat 12 when no external force is applied, thereby improving the stability and responsiveness of the device. Specifically, the preload element 26 is a tension spring structure, with its two ends connected between the connecting rod 21 and the clamp arm 22.

[0081] When the clamping arm 22 is in the disengaged position, the tension spring is stretched and stores a certain amount of elastic potential energy. Once the external force disappears or the driver releases the force, the tension spring's inherent tendency to retract automatically returns the clamping arm 22 to the engaged position, enabling rapid restoration of the connected state. This design not only simplifies the operation process but also enhances the reliability and automation of the clamping arm 22 switching process, making the union assembly and disassembly device more efficient and stable during continuous operation.

[0082] Example 9:

[0083] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0084] The apparatus further includes a control terminal 3 supported on the slide 24 or the telescopic drive member 23. The control terminal 3 can control the extension or contraction of the telescopic drive member 23. Alternatively, the control terminal 3 can regulate the driving force of the telescopic drive member 23, thereby regulating the torsional torque exerted by the loading member 25 on the union 100.

[0085] In this embodiment, the control terminal 3 can facilitate the operator to conveniently and quickly complete the control operation directly after clamping the device, thereby improving the convenience of using the device.

[0086] Furthermore, the control terminal 3 also has an adjustment function, not only controlling the direction and stroke of the telescopic drive member 23, but also precisely regulating its output driving force. By adjusting the force exerted by the telescopic drive member 23, the torsional torque exerted by the loading member 25 on the union 100 can be indirectly controlled, enabling precise removal and installation of the union 100 for different specifications or working conditions.

[0087] Control terminal 3 enables operators to efficiently and accurately complete the assembly and disassembly of union 100 while ensuring safety. Dynamic adjustment of driving force and torque also helps prevent damage to equipment or the connection surfaces of pipeline 200 caused by overload, enhancing the applicability and safety of the entire system.

[0088] Specifically, the telescopic driving member 23 is also a hydraulic cylinder, and the control terminal 3 can be a control button fixed on the telescopic driving member 23 .

[0089] Example 10:

[0090] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0091] The clamping mechanism 1 further comprises a plurality of jaws 13, which are detachably fixedly connected to the opposite side walls of the fixing seat 11 and the clamping seat 12. The jaws 13 are provided in various thicknesses to form clamping channels of various radiuses.

[0092] In this embodiment, the clamping mechanism 1 further includes a plurality of jaws 13, which can be easily removed and fixedly connected to the opposing inner walls of the fixing base 11 and the clamping base 12. In this way, jaws 13 of different thicknesses can be quickly replaced as needed to meet the clamping requirements of pipes 200 of different diameters.

[0093] Specifically, the jaws 13 are available in a variety of thicknesses, allowing them to form clamping channels with varying radii when installed on the fixing base 11 and the clamping base 12. This design improves the versatility and flexibility of the union assembly and disassembly device, allowing it to accommodate various sizes of pipes 200 and unions 100 without having to replace the entire clamping mechanism 1 or adjust the device structure.

[0094] In addition, the use of detachable teeth 13 is also convenient for maintenance and replacement. Once a tooth 13 is worn due to long-term use, the performance of the clamping mechanism 1 can be restored by replacing the damaged tooth 13 without the need for complicated repair work, thereby reducing maintenance costs and extending the service life of the equipment.

[0095] Example 11:

[0096] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0097] The surface of the clamping teeth 13 facing the axis of the clamping channel is the clamping surface, and the extended plane of the clamping surface is an annular plane that matches the outer peripheral surface of the pipe 200. That is, when multiple clamping teeth 13 are arranged and closed around the clamping channel, the clamping surface formed by them can form a complete circular contour that matches the outer diameter of the pipe 200, so that the clamping surface is completely fitted with the outer peripheral surface of the pipe 200, which can effectively prevent the pipe 200 from sliding or displacing during operation, thereby ensuring the safety and accuracy of the operation.

[0098] The design of the annular plane helps to evenly distribute the clamping force on the outer circumference of the pipe 200, reducing the risk of damage to the pipe 200 that may be caused by local stress concentration.

[0099] Since the jaws 13 have a variety of thickness models, jaws 13 of appropriate thickness can be selected according to pipes 200 of different diameters, so that the clamping mechanism 1 can adapt to pipes 200 of various specifications, greatly improving the versatility and flexibility of the equipment.

[0100] A well-designed clamping surface not only securely grips the pipe 200 but also minimizes damage to the pipe 200 surface coating or other protective layers, which is crucial for maintaining the overall performance and extending the service life of the pipe 200.

[0101] Example 12:

[0102] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0103] The clamping mechanism 1 further includes an end plate 14 . A slot C is formed on the fixing seat 11 and the clamping seat 12 . The jaws 13 are axially slidably connected in the slot C. The jaws 13 have a step portion D axially abutting against the slot C.

[0104] The end plate 14 is detachably connected to the fixing seat 11 and the clamping seat 12 at a position corresponding to the axial end of the slot C to limit the jaws 13 from sliding out of the slot C.

[0105] In this embodiment, the clamping mechanism 1 further includes an end plate 14, which serves to axially limit the jaws 13, ensuring they remain stably positioned during operation. Specifically, the fixing base 11 and the clamping base 12 each define an axially extending slot C, within which the jaws 13 are axially slidably inserted, allowing for adjustment and positioning according to variations in the diameter of the pipe 200.

[0106] To ensure a secure fit of the jaws 13 within the slot C, a stepped portion D is provided on the jaws 13. This stepped portion D forms an axial abutment with the inner wall of the slot C, thereby preventing the jaws 13 from accidentally falling off or shifting due to external forces. This structure also facilitates quick assembly and disassembly when replacing jaws 13 of different thicknesses.

[0107] Furthermore, the end plate 14 is disposed on the fixing seat 11 and the clamping seat 12 at a position corresponding to the axial end of the slot C, and is fixed to the corresponding structure by a detachable connection method, such as bolts, snaps, etc., thereby sealing the end of the slot C. When the end plate 14 is in place, it can effectively restrict the jaws 13 from sliding out axially along the slot C, thereby ensuring the safety and reliability of the entire clamping mechanism 1 during clamping and disassembly operations.

[0108] This limiting structure composed of the slot C, the step portion D and the end plate 14 not only improves the stability of the installation of the jaws 13, but also enhances the adaptability of the clamping mechanism 1 to pipes 200 of various specifications, making the device more flexible, efficient and easy to maintain in actual applications.

[0109] Example 12:

[0110] Reference Figures 1-6 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0111] The sliding seat 24 and the fixed seat 11 are respectively provided with a sliding block E and a sliding groove F that cooperate with each other. The sliding block E and the sliding groove F are respectively a T-shaped block and a T-shaped groove.

[0112] In this embodiment, the T-shaped structure can effectively prevent the slider E from escaping from the slide groove F, so that the slide seat 24 is more stable when sliding along the fixed seat 11, and the possibility of shaking or deviation is reduced.

[0113] Since there is a good contact surface between the T-shaped slider E and the slide groove F, it can be ensured that the slide 24 moves accurately according to the predetermined trajectory, thereby improving the accuracy of the sliding connection.

[0114] The T-block and T-slot are relatively simple and straightforward, making them easy to manufacture and assemble, as well as to inspect and maintain. If a component needs to be replaced or repaired, it is also easier to do by simply sliding the T-block away from the connecting rod 21 to disengage the two.

[0115] By selecting appropriate materials and surface treatment technology, the T-type sliding system can maintain good performance in various environments, including high and low temperatures or working environments with corrosive media.

[0116] Example 13:

[0117] An embodiment of the present invention further provides a union disassembly and assembly method, which is applied to the union disassembly and assembly device in any of the above embodiments, and the method includes:

[0118] S1: Switch the clamping arm 22 to the separation position and open the clamping port.

[0119] S2: The pipe 200 passes through the clamping opening and enters the clamping channel.

[0120] When the union 100 is tightened, the loader 25 is positioned clockwise relative to the wing nut 300 of the union 100 and can abut against the wing nut 300 of the union 100 in a clockwise direction. When the union 100 is loosened, the loader 25 is positioned counterclockwise relative to the wing nut 300 of the union 100 and can abut against the wing nut 300 of the union 100 in a counterclockwise direction.

[0121] S3: Switch the clamping arm 22 to the pulling position, and continue to extend the telescopic end 23a until the union 100 is tightened or loosened.

[0122] This method enables efficient, stable, and safe tightening or loosening of the union 100 at the connection of the pipeline 200. Through a rational arrangement of steps, this method fully utilizes the advantages of the device's structural design, improving operational efficiency and safety. The following is a detailed and expanded description of this method:

[0123] Before commencing operation, the clamping arm 22 is switched from its traction position, linked to the clamping base 12, to a disengaged position. This action, by controlling the movement of the telescopic drive, causes the connecting rod 21 to swing, driving the clamping arm 22 to rotate about its hinge axis, thereby disengaging its traction portion A from its connection portion B on the clamping base 12. At this point, the clamping opening formed between the fixing base 11 and the clamping base 12 is open, ready for the subsequent insertion of the pipe 200.

[0124] Then, the pipe 200 that needs to be disassembled and assembled by the union 100 is sent into the clamping channel from the opened clamping port, ensuring that the pipe 200 is located between the clamping seat 12 and the fixing seat 11 and maintains an appropriate relative position relationship with the loading member 25.

[0125] The position of the loading member 25 relative to the union 100 and the wing nut 300 is adjusted according to whether the current operation to be performed is tightening or loosening.

[0126] When tightening the union 100, the loader 25 needs to apply a clockwise rotational torque to the union 100 wing nut 300. When loosening the union 100, the loader 25 needs to apply a counterclockwise rotational torque to the union 100 wing nut 300 to ensure smooth subsequent twisting action.

[0127] After confirming that the pipe 200 is correctly placed, the clamping arm 22 is switched back to the pulling position, so that its pulling portion A is reconnected with the connecting portion B on the clamping seat 12. The telescopic drive member 23 is then activated, and its telescopic end 23a gradually extends, pushing the connecting rod 21 to move, thereby driving the clamping seat 12 to move toward the fixed seat, and finally clamping the pipe 200.

[0128] During this process, due to the mechanical action relationship between the connecting rod 21 and the telescopic driving member 23, the main body 23b of the telescopic driving member 23 will be subjected to a reaction force from the connecting rod 21, and the reaction force is transmitted to the slide 24 and the loading member 25, causing the loading member 25 to rotate around the axis of the pipe 200, thereby applying a corresponding torsional torque to the wing nut 300 of the union 100.

[0129] If the tightening operation is required, the disassembly device must be installed in the Figure 6 As shown in FIG. 1 , the front side of the union 100 is positioned so that the telescopic driving member 23 is located on the right side of the union 100 . The loading member 25 rotates clockwise to gradually tighten the union 100 .

[0130] If the operation is to loosen, the disassembly device needs to be installed in reverse, that is, the device should be installed in Figure 6 The rear side of the union 100 is shown, and the telescopic driving member 23 is located on the left side of the union 100. The loading member 25 rotates counterclockwise to gradually loosen the union 100.

[0131] The entire process can be monitored in real time by the control system and the driving force of the telescopic driving member 23 can be adjusted to control the torque value output by the loading member 25 to prevent damage to the union 100 or the pipeline 200 due to overload.

[0132] The clamping force and the torque output by the loading member 25 can also be detected by sensors to achieve closed-loop control and improve operating accuracy.

[0133] It can be understood that, except for any conflicting parts, the above-mentioned embodiments 1-13 can be freely combined to form other implementation methods of the present invention.

[0134] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0135] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0136] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0137] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0138] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A union assembly and disassembly device, suitable for assembling and disassembling a union threadedly connecting two adjacent pipe ends, wherein the outer periphery of the union is formed with a wing nut for twisting, characterized in that: The invention comprises a clamping mechanism and an actuator; the clamping mechanism comprises a fixing seat and a clamping seat, the lower end of which is hinged along a first axis and the upper end of which forms a clamping opening for the pipe, and a clamping channel for the pipe is formed between the fixing seat and the clamping seat; the actuator comprises a connecting rod, a clamping arm, a telescopic driving member, a sliding seat and a loading member; The slide is slidably connected to the fixed seat along the circumference of the clamping channel; the telescopic end and the body of the telescopic driving member are respectively hinged to the upper end of the connecting rod and the slide along the first axis; the loading member is fixedly connected to the slide; the middle portion of the connecting rod is hinged to the fixed seat along the first axis, and the lower portion is connected to the clamping arm; the clamping arm can switch between a traction position connected to the clamping seat and a separation position disengaged from the clamping seat; In the pulling position, the telescopic end extends and applies force to the connecting rod, which enables the clamping mechanism to clamp the pipe. The reaction force exerted by the connecting rod on the main body causes the loading member to twist the wing nut of the union. The line connecting the projection points of the two hinge shafts on the main body and the telescopic end along the direction of the first axis coincides with the axis of the telescopic drive member, and the length of the power arm on the side of the connecting rod close to the telescopic drive member is greater than the length of the resistance arm on the side of the connecting rod close to the clamping arm.

2. The union assembly and disassembly device according to claim 1, wherein: The sliding seat is retracted in a direction close to the connecting rod, and a side of the main body of the telescopic driving component close to the connecting rod is hinged to the sliding seat along a first axis.

3. The union assembly and disassembly device according to claim 1, wherein: The loading members are provided in two groups and are fixedly connected to the front side and the rear side of the slide respectively; The union disassembly and assembly device can be switched between a tightening clamping position and an unscrewing clamping position. In the tightening clamping position, the clamping mechanism clamps one axial side of the union so that the loading part close to the union tightens the union. In the unscrewing and clamping position, the clamping mechanism is clamped on the other axial side of the union so that the loading part close to the union can unscrew the union.

4. The union assembly and disassembly device according to claim 3, wherein: The loading component includes a cantilever extending forward and backward; the cantilever is a rod body capable of moving the union.

5. The union assembly and disassembly device according to claim 4, characterized in that: The loading component also includes a pressing block axially sleeved on the cantilever, and a torsional plane of a wing nut of an extrusion union is formed on the pressing block.

6. The union assembly and disassembly device according to claim 1, wherein: The clamping arm is hinged to the lower end of the connecting rod along the first axis, and a traction portion is formed on the clamping arm; A connecting portion is formed on the clamping seat. When the clamping arm swings along the hinge axis with the connecting rod, it can be connected with the traction portion to switch to the traction position, and can also be separated from the traction portion to switch to the separation position.

7. The union assembly and disassembly device according to claim 6, characterized in that: The traction part is a rod body extending forward and backward, the connection part is a groove provided on the clamping seat, and the upper side wall of the groove can hook the rod body.

8. The union assembly and disassembly device according to claim 7, characterized in that: The actuator further includes a pre-tightening member adapted to apply a force to the clamping arm to swing toward the pulling position; The pre-tightening member is a tension spring, and two ends of the pre-tightening member are respectively connected to the connecting rod and the clamping arm.

9. The union assembly and disassembly device according to claim 1, wherein: Also included is a control terminal supported on the slide or telescopic drive member; The control terminal can control the extension or contraction of the telescopic drive member; Alternatively, the control terminal can also regulate the driving force of the telescopic driving member, thereby regulating the torsional torque of the loading member on the union.

10. A method for disassembling and assembling a union, characterized by: The method for applying the union assembly and disassembly device according to any one of claims 1 to 9 comprises: S1: Switch the clamping arm to the separation position and open the clamping port; S2: Make the pipe pass through the clamping port and enter the clamping channel; When the union is tightened, the loading member is located on the clockwise side of the union's wing nut and can abut against the union's wing nut clockwise; when the union is loosened, the loading member is located on the counterclockwise side of the union's wing nut and can abut against the union's wing nut counterclockwise; S3: Switch the clamping arm to the pulling position and continue to extend the telescopic end until the union is tightened or loosened.

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