High-precision oil pipe coupling quick-changing machine

Abstract

The utility model relates to petroleum pipeline coupling quick change technical field, concretely to a kind of high-precision petroleum pipeline coupling quick change machine, including base, the base top is fixed with main vice, the left end of main vice is equipped with auxiliary clamp roller and main clamp roller, the top of main clamp roller is equipped with clamp roller platform, the left and right ends of main vice are all equipped with main vice jaw plate, the right end main vice jaw plate right side is fixed with brake disc, brake disc outside is slidably connected with brake band, the base top is also equipped with back vice, the left and right ends of back vice are all rotatably connected with back vice jaw plate, the inside of main vice and the inside of back vice are all equipped with several vice teeth, the outside of each vice tooth is equipped with positioning frame, the inside of each positioning frame is slidably connected with gyro wheel, the back end of back vice is equipped with back vice clamping rod;The utility model can assist rotation pipeline coupling by auxiliary clamp roller and main clamp roller cooperation, while guaranteeing that the axis of pipeline coupling is always consistent with the axis of main vice, to prevent pipeline coupling from being stuck.

Description

Technical Field

[0001] This utility model belongs to the field of quick-change technology for oil pipeline couplings, specifically a high-precision quick-change machine for oil pipeline couplings. Background Technology

[0002] In long-distance oil and gas pipelines, oil and gas field gathering and transportation pipelines, and offshore oil and gas pipeline systems, couplings, as core components of pipeline connections, undertake critical functions such as sealing, load-bearing, and corrosion protection. The quality of their installation and replacement directly determines the safety and service life of the pipeline. During pipeline laying construction, routine maintenance, and emergency repairs, couplings are prone to sealing failure, thread damage, or structural deformation due to factors such as media corrosion, pressure shocks, and external impacts, requiring timely disassembly and replacement.

[0003] However, most existing quick-change devices require manual assistance during use, resulting in low quick-change efficiency. Furthermore, existing quick-change devices rely solely on manual inspection to ensure complete tightening, leading to low quick-change accuracy. To address these issues, this invention designs a high-precision quick-change machine for oil pipeline couplings. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a high-precision quick-change machine for oil pipeline couplings, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision quick-release coupling machine for oil pipelines, comprising a base, a main clamp fixed to the top of the base, a quick-release platform fixedly connected to the base at the left end of the main clamp, two connecting frames on the quick-release platform, each connecting frame having an auxiliary clamping roller hinged inside, a set of main clamping rollers hinged to the top of each set of auxiliary clamping rollers, a clamping roller platform on the top of the quick-release platform, synchronous racks fixed to both ends of the clamping roller platform, main clamping jaw plates on both ends of the main clamp, a brake disc fixed to the right side of the right end of the main clamping jaw plate, and a sliding connection on the outside of the brake disc. The device is equipped with a brake band, the right end of which has a tension band. A slide rail is fixed to the top of the base, and a back clamp bracket is located on the top of the slide rail. A back clamp is fixed to the top of the back clamp bracket. Both ends of the back clamp are rotatably connected to back clamp jaw plates. Both the main clamp and the back clamp have several jaw bodies inside. Each jaw body has a positioning frame on its outside. Each positioning frame has a roller slidably connected inside. A spacer guide block is tightly fitted between two adjacent positioning frames. A back clamp clamping rod is located at the rear end of the back clamp. An outer ring full roller bearing is fixed inside the main clamp, and an inner ring full roller bearing is fixed inside the inner ring of the outer ring full roller bearing.

[0006] Preferably, a slider is slidably connected to the top of the slide rail, and the slider is fixedly connected to the back clamp bracket at its top. A photoelectric sensor is fixed to the right end of the back clamp bracket, and a pneumatic push rod is fixed to the left end of the back clamp bracket. The other end of the pneumatic push rod is fixedly connected to the gear box at the bottom of the main clamp. A back clamp tension plate is hinged to the right end of the back clamp bracket, and a tension sensor is hinged to the bottom of the back clamp tension plate. The tension sensor is hinged to the slider. Each back clamp rotation arm is hinged to the back clamp clamping rod at its rear end, and a connecting block is fixed to the inner side of each back clamp rotation arm.

[0007] Preferably, each jaw body has detachably connected jaws inside, and the jaw body and the positioning frame outside it are fastened together by positioning bolts. Each spacer guide block is fixed to the outside of a guide key, and each connecting block is fixedly connected to the guide key inside it. Each set of rollers is slidably connected to a curved disc. The left end of the curved disc is fixedly connected to the main jaw plate, and the right end of the curved disc is fixedly connected to the back jaw. The main jaw plate is fixedly connected to the inner ring of the outer full-roll bearing. Each positioning frame is fixedly provided with an inner positioning pin, and each inner positioning pin is provided with an outer positioning pin. The right end of the outer positioning pin is fixedly connected to the back jaw plate, and the left end of the outer positioning pin is fixedly connected to the main jaw plate. A return spring is fixed between each outer positioning pin and its outer outer positioning pin.

[0008] Preferably, the brake band has friction band moving rods hinged at both ends, each friction band moving rod being fixedly connected to the outer ring of the outer full-roll bearing. The tension band has tension springs hinged at both ends, each tension spring having a tension bolt fixed at its bottom. Each tension bolt is fastened to the lower end of the tension band via a bolt. Two through-beam probe brackets are also fixed to the right end of the main clamp, each through-beam probe bracket having a through-beam probe fixed on it. A guide rod auxiliary connecting plate is fixed to the left end of the main clamp, with a probe located on the outside of the guide rod auxiliary connecting plate. A gear is fixed to the outside of the left-end curved disc, with a secondary gear meshing at the bottom of the gear and a main gear meshing at the bottom of the secondary gear. A main gear bearing is fixed to the outside of the main gear's shaft, with the outer ring of the main gear bearing fixedly connected to the gearbox. A secondary gear bearing is fixed inside the secondary gear, with the inner ring of the secondary gear bearing fixedly connected to the gearbox via a shaft. A hydraulic motor is rotatably connected to the left end of the main gear's shaft.

[0009] Preferably, each connecting frame has an externally fixed clamping roller motor, a small pulley rotatably connected to the left end of each clamping roller motor, a large pulley connected to the top of each small pulley via a belt drive, a belt protective cover on the outside of each large pulley, a shaft of each large pulley fixedly connected to the main clamping roller at its right end, a positioning slider fixedly fixed to the top of each connecting frame, a clamping cylinder fixedly fixed to the top of each positioning slider, a telescopic end of each clamping cylinder fixedly connected to the clamping roller platform, a clamping gear meshing between two synchronous racks, a clamping slide rail slidably connected to the top of the two positioning sliders, and the clamping slide rail fixedly connected to the clamping roller platform.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model can assist in rotating the pipe coupling by cooperating with the auxiliary clamping roller and the main clamping roller, while ensuring that the axis of the pipe coupling is always consistent with the axis of the main clamp, thereby preventing the pipe coupling from jamming. The clamping roller platform is used to position the synchronous rack. The outer ring full roller bearing and the inner ring full roller bearing are integrated bearings, thereby ensuring the stability of the positioning frame when rotating, thus ensuring the replacement effect, and thus improving the service life of the entire quick change.

[0011] (2) This utility model can lock the main jaw plate by locking the brake disc with the brake band, thereby braking the beam probe bracket. At the same time, the small pulley can be driven to rotate by the clamping roller motor, thereby driving the large pulley to rotate, thereby driving the main clamping roller to rotate, thereby assisting in turning the coupling. Meanwhile, the clamping cylinder can be extended and retracted to drive the clamping gear to rotate, thereby driving the synchronous rack to move, thereby driving the connecting frame to move, thereby changing the distance between the two largest pulleys, thereby adapting to pipe couplings of different sizes, thereby improving the application range of the entire device.

[0012] (3) The present invention uses a positioning frame to position the roller. The roller can move along the curved disk to drive the jaw body to move radially along the back jaw and the main jaw, thereby clamping the pipe coupling. The toothed disk can rotate to drive the left end roller to move along the left end curved disk, thereby causing the left end jaw to move inward, thereby clamping the pipe coupling. At the same time, it can drive the left end curved disk and the jaw body to rotate as a whole, thereby driving the pipe coupling to rotate, thereby achieving the purpose of quick coupling replacement. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2This is a schematic diagram of the overall back of the present invention; Figure 3 This is a schematic diagram of the left end of the back clamp of this utility model; Figure 4 This is a schematic diagram of the internal structure of the back clamp jaw plate of this utility model; Figure 5 This is a schematic diagram of the internal structure of the rotating lever arm of the back clamp of this utility model; Figure 6 This is a cross-sectional view of the back clamp of this utility model; Figure 7 This is a schematic diagram of the right end of the main clamp of this utility model; Figure 8 This is a schematic diagram of the internal structure of the through-beam probe bracket of this utility model; Figure 9 This is a schematic diagram of the internal structure of the main clamp of this utility model; Figure 10 This is a cross-sectional view of the main clamp of this utility model; Figure 11 This is a schematic diagram of the left end of the main clamp of this utility model; Figure 12 This is a schematic diagram of the top of the quick-release platform of this utility model; Figure 13 This is a schematic diagram of the clamping slider of this utility model; Figure 14 This is a schematic diagram of the synchronous rack of this utility model; Figure 15 This is a schematic diagram of the positioning block of this utility model; Figure 16 This is a schematic diagram of the right end of the hydraulic motor of this utility model.

[0015] In the diagram: 1-Base; 2-Back clamp; 3-Main clamp; 4-Quick release platform; 5-Clamping roller platform; 6-Jaw jaws; 7-Back clamp rotating arm; 8-Back clamp bracket; 9-Hydraulic motor; 101-Slide rail; 102-Pneumatic push rod; 201-Back clamp jaw plate; 301-Main clamp jaw plate; 302-Brake disc; 303-Brake band; 304-Tension belt; 305-Gear box; 306-Thrusting probe bracket; 307-Thrusting probe; 308-Friction belt moving rod; 309-Tension spring; 310-Tension bolt; 311-Outer ring full roller bearing; 312-Inner ring full roller bearing; 313-Guide rod auxiliary connecting plate; 314-Probe; 401-Clamping roller motor; 402-Belt protective cover; 403-Secondary clamping roller; 404-Main clamping roller; 4 05-Large pulley; 406-Small pulley; 407-Connecting frame; 501-Clamping gear; 502-Synchronous rack; 503-Clamping cylinder; 504-Positioning slider; 505-Clamping slide rail; 601-Pliers; 602-Return spring; 603-Outer positioning pin; 604-Inner positioning pin; 605-Spacer guide block; 606-Guide key; 607-Positioning frame; 608-Positioning bolt; 609-Curved disc; 610-Roller; 701-Back clamping rod; 702-Connecting block; 801-Slider; 802-Photoelectric sensor; 803-Back clamping tension plate; 804-Tension sensor; 901-Main gear; 902-Secondary gear; 903-Secondary gear bearing; 904-Main gear bearing; 905-Gear disc. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example 1, by Figures 1-3 , Figures 6-7 , Figure 11 , Figure 15The present invention includes a base 1 made of alloy material, which supports the entire quick-change machine. A main clamp 3, also made of alloy material, is fixed to the top of the base 1. A quick-release platform 4, fixedly connected to the base 1, is located at the left end of the main clamp 3. The quick-release platform 4 is used to position the clamping roller motor 401. The quick-release platform 4 has two connecting frames 407, each of which has a secondary clamping roller 403 hinged inside. The secondary clamping roller 403 is made of alloy material. A set of main clamping rollers 404, also made of alloy material, is located at the top of each set of secondary clamping rollers 403 and hinged to the connecting frame 407. The connecting frame 407 is used to position the secondary clamping rollers 403 and... The main clamping roller 404 is made of alloy material. The auxiliary clamping roller 403 cooperates with the main clamping roller 404 to assist in rotating the pipe coupling, while ensuring that the axis of the pipe coupling is always aligned with the axis of the main clamp 3, thereby preventing the pipe coupling from jamming. The quick-release platform 4 has a clamping roller platform 5 on top, which is made of alloy material. The clamping roller platform 5 is used to position the synchronous rack 502. Synchronous racks 502 are fixed at both ends of the clamping roller platform 5. The synchronous racks 502 provide a moving path for the clamping gear 501. The main clamp 3 has main clamp jaw plates 301 at both ends, which are made of alloy material. The main clamp jaw plates 301 are used to position the... A brake disc 302 is fixed to the right side of the main jaw plate 301 at the right end. The brake disc 302 is made of alloy material and is used to position the brake band 303. The brake band 303 is slidably connected to the outside of the brake disc 302. The brake band 303 is also made of alloy material and has a rubber layer fixed inside. The brake band 303 can lock the main jaw plate 301 by locking the brake disc 302, thereby braking the through-beam probe bracket 306. A tension band 304 made of alloy material is provided at the right end of the brake band 303. The tension band 304 is used to position the brake band 303. A slide rail 10 is also fixed to the top of the base 1. 1. The slide rail 101 provides a moving path for the slider 801. A back clamp bracket 8 is provided at the top of the slide rail 101 to support the back clamp 2. The back clamp 2 is fixed to the top of the back clamp bracket 8. The back clamp 2 is made of alloy material and is used to position the right-end jaw body 6. Both ends of the back clamp 2 are rotatably connected to back clamp jaw plates 201, which are also made of alloy material and are used to position the right-end positioning frame 607. Both the main clamp 3 and the back clamp 2 have several jaw bodies 6 inside. The jaw bodies 6 are made of alloy material and are used to position the jaws 601. Each jaw body 6 has an external positioning frame 607.The positioning frame 607 is made of alloy material and is used to position the roller 610. Each positioning frame 607 has a roller 610 slidably connected inside. The roller 610 moves along the curved disc 609, which drives the jaw body 6 to move radially along the back jaw 2 and the main jaw 3, thereby clamping the pipe coupling. A spacer guide block 605, made of alloy material, is tightly fitted between adjacent positioning frames 607 to ensure proper positioning. To ensure the stability of the frame 607, a clamping rod 701 is provided at the rear end of the back clamp 2. The clamping rod 701 is retractable, thereby driving the back clamp jaw plate 201 to rotate. An outer full-roll bearing 311 is fixed inside the main clamp 3, and an inner full-roll bearing 312 is fixed inside the inner ring of the outer full-roll bearing 311. The outer full-roll bearing 311 and the inner full-roll bearing 312 are integral bearings, thus ensuring the stability of the positioning frame 607 during rotation, thereby ensuring the replacement effect and improving the overall service life of the quick-change system.

[0018] Example 2, based on Example 1, combined with... Figures 4-5 , Figures 8-10 , Figures 12-14 , Figure 16The slide rail 101 has a slider 801 slidably connected to its top. The slider 801 is made of alloy material and supports the back clamp bracket 8. The slider 801 is fixedly connected to the back clamp bracket 8 at its top. A photoelectric sensor 802 is fixed to the right end of the back clamp bracket 8. The photoelectric sensor 802 is used to monitor the position of the pipe at the right end of the back clamp 2. A pneumatic push rod 102 is fixed to the left end of the back clamp bracket 8. The pneumatic push rod 102 is telescopic, thereby driving the back clamp 2 to move. The other end of the pneumatic push rod 102 is fixedly connected to the gear box 305 at the bottom of the main clamp 3. A back clamp tension plate 803 is hinged to the right end of the back clamp bracket 8. The back clamp tension plate 803 is made of alloy material. Made of alloy material, the back clamp tension plate 803 has a tension sensor 804 hinged to its bottom. The tension sensor 804 is used to measure the torque on the back clamp 2. The tension sensor 804 is hinged to the slider 801. Each back clamp rotating arm 7 is hinged to the back clamp clamping rod 701 at its rear end. A connecting block 702 is fixed inside each back clamp rotating arm 7. The connecting block 702 is made of alloy material and is used to position the back clamp rotating arm 7. Each clamp jaw 6 has a detachably connected jaw 601 inside. The jaw 601 is used to clamp pipe couplings. The jaw jaw 6 and its external positioning frame 607 are fastened together by positioning bolts 608. A guide key 606 is fixed to the outside of the spacer guide block 605. The guide key 606 is made of alloy material and is used to position the connecting block 702. Each connecting block 702 is fixedly connected to the guide key 606 inside it. A curved disk 609 is slidably connected to the outside of each set of rollers 610. The 609 provides a movement path for the rollers 610. The left end of the curved disk 609 is fixedly connected to the main jaw plate 301, and the right end of the curved disk 609 is fixedly connected to the back clamp 2. The outside of the main jaw plate 301 is fixedly connected to the inner ring of the outer ring full roller bearing 311. An inner positioning pin 604 is fixed to the outside of each positioning frame 607. The outer positioning pin 603 is provided on the outside of the positioning pin 604. The outer positioning pin 603 and the inner positioning pin 604 are used to position the return spring 602. The right end of the outer positioning pin 603 is fixedly connected to the back jaw plate 201, and the left end of the outer positioning pin 603 is fixedly connected to the main jaw plate 301. A return spring 602 is fixed between each outer positioning pin 603 and its outer counterpart. The return spring 602 is elastic, which facilitates the reset of the spacer guide block 605. Friction band moving rods 308 are hinged to the front and rear ends of the brake band 303. The friction band moving rods 308 are telescopic, which can drive the tension band 304 to fit tightly against the brake disc 302.Each friction band moving rod 308 is fixedly connected to the outer ring of the outer full-roll bearing 311. Tension springs 309 are hinged to both ends of the tension band 304. The tension springs 309 are elastic. A tension bolt 310 is fixed to the bottom of each tension spring 309. The tension bolt 310 is used to position the tension spring 309. Each tension bolt 310 is fastened to the lower end of the tension band 304 by bolts. Two through-beam probe brackets 306 are also fixed to the right end of the main clamp 3. The through-beam probe brackets 306 are made of alloy material and are used to position the through-beam probes 307. Each through-beam probe bracket 306 has a through-beam probe 307 fixed to it. The probe 307 is used to monitor whether the coupling passes through the main clamp 3. A guide rod auxiliary connecting plate 313 is fixed to the left end of the main clamp 3. The guide rod auxiliary connecting plate 313 is made of alloy material and ensures the stability of the pipe coupling. A probe 314 is provided on the outside of the guide rod auxiliary connecting plate 313. The probe 314 is used to monitor whether the pipe coupling reaches the left end of the main clamp 3. A toothed disc 905 is fixed to the outside of the left-end curved disc 609. The toothed disc 905, by rotating, can drive the left-end roller 610 to move along the left-end curved disc 609, thereby causing the left-end jaws 601 to move inward, thus clamping the pipe coupling. Simultaneously, it can drive the left-end curved disc 609 and... The jaw body 6 rotates as a whole, thereby driving the pipe coupling to rotate, thus achieving the purpose of quick coupling change. A secondary gear 902 is meshed with the bottom of the gear disc 905, and the secondary gear 902 can drive the gear disc 905 to rotate. A main gear 901 is meshed with the bottom of the secondary gear 902, and the main gear 901 can drive the secondary gear 902 to rotate. A main gear bearing 904 is fixed externally to the shaft of the main gear 901, ensuring the stability of the main gear 901. The outer ring of the main gear bearing 904 is fixedly connected to the gear disc housing 305. A secondary gear bearing 903 is fixed internally to the secondary gear 902, ensuring the stability of the secondary gear 902. The inner ring of the secondary gear bearing 903 is fixedly connected to the gearbox 305 via a rotating shaft. A hydraulic motor 9 is rotatably connected to the left end of the rotating shaft of the main gear 901. The hydraulic motor 9 can drive the main gear 901 to rotate. A clamping roller motor 401 is fixed externally to each connecting frame 407. The clamping roller motor 401 can drive the small pulley 406 to rotate. A small pulley 406 is rotatably connected to the left end of each clamping roller motor 401. The small pulley 406 can drive the large pulley 405 to rotate by rotating. The top of each small pulley 406 is connected to the large pulley 405 via a belt drive. The large pulley 405 can drive the main clamping roller 404 to rotate by rotating. A belt guard 402 is provided on the outside of each large pulley 405.The belt guard 402 protects the large pulley 405 and the small pulley 406. The shaft of each large pulley 405 is fixedly connected to the main clamping roller 404 at its right end. A positioning slider 504, made of alloy material, is fixed to the top of each connecting frame 407. The positioning slider 504 is used to position the connecting frame 407. A clamping cylinder 503 is fixed to the top of each positioning slider 504. The clamping cylinder 503 is retractable, thereby moving the connecting frame 407 to accommodate the movement of the belt. The system is equipped with pipe couplings of different outer diameters. The telescopic end of each clamping cylinder 503 is fixedly connected to the clamping roller platform 5. A clamping gear 501 meshes between the two synchronous racks 502, facilitating the movement of the synchronous racks 502. A clamping slide rail 505, made of alloy material, slidably connects to the top of each of the two positioning sliders 504, providing a movement path for the positioning sliders 504. The clamping slide rail 505 is fixedly connected to the clamping roller platform 5. When using this quick-change machine, the operator connects the entire machine to an external power supply and communicates with an external PLC control unit. The machine can then be controlled by the external controller. When tightening couplings, the operator places the pipe inside the back clamp 2. The position of the pipe is monitored by the photoelectric sensor 802. The clamping rod 701 extends, causing the clamping arm 7 to rotate around the clamp 2. This, in turn, causes the jaw plate 201 to rotate around the clamp 2, which in turn causes the right-end spacer guide block 605 to rotate. This causes the right-end roller 610 to move along the right-end curved disc 609, thus moving the right-end jaws 6 along the back clamp. 2. Radial movement, thereby clamping the pipe through the right-end jaws 601. The operator then transports the pipe coupling into the main clamp 3. At this point, the guide rod auxiliary connecting plate 313 supports the pipe coupling, further transporting the pipe. The through-beam probe 307 can monitor whether the pipe coupling protrudes from the main clamp 3. Furthermore, the clamping cylinder 503 extends and retracts, thereby moving the synchronous rack 502, which in turn rotates the clamping gear 501, causing the positioning slider 504 to move along the clamping slide rail 505, thereby moving the connecting frame 407, which in turn moves the main clamping roller 404 and the auxiliary clamping roller 403, thus causing the auxiliary clamping roller 403 and... The auxiliary clamping roller 403 is in close contact with the pipe coupling, thus supporting the pipe coupling and ensuring its stability. At this time, the extension of the friction band moving rod 308 can drive the brake band 303 to clamp the brake disc 302, thereby braking the left-end jaw body 6. The hydraulic motor 9 then operates, driving the main gear 901 to rotate, which in turn drives the auxiliary gear 902 to rotate, and consequently the gear disc 905 to rotate. The braking effect of the brake band 303 prevents the main jaw plate 301 from rotating, thus preventing the left-end spacer guide block 605 from rotating. This causes the left-end roller 610 to rotate along the left-end curved disc 609, thereby causing the left-end positioning frame 6... 07 moves radially along the main jaw plate 301, thereby clamping the pipe coupling with the left-end jaw body 6. When the torque is greater than the resistance of the brake band 303, the left-end curved disc 609 and the left-end jaw body 6 rotate synchronously, thereby starting the pipe coupling tightening operation. At this time, the torque on the back clamp 2 can be monitored by the tension sensor 804 and the back clamp tension plate 803, thereby ensuring the accuracy of quick coupling change. At this time, the clamping roller motor 401 works, thereby driving the small pulley 406 to rotate, thereby driving the large pulley 405 to rotate, thereby driving the main clamping roller 404 to rotate, thereby assisting the tightening, thereby ensuring the stability of quick coupling change and ensuring the efficiency of quick coupling change.

[0019] The working process of this utility model is as follows: When using this quick-change machine, the operator connects the entire quick-change machine to an external power supply and communicates with an external PLC control unit. At this time, the entire quick-change machine can be controlled by the external controller. When it is necessary to tighten the coupling, the operator places the pipe inside the back clamp 2. At this time, the position of the pipe can be monitored by the photoelectric sensor 802. At this time, the clamping rod 701 of the back clamp extends, thereby driving the rotating arm 7 of the back clamp to rotate around the back clamp 2, thereby driving the jaw plate 201 of the back clamp to rotate around the back clamp 2, thereby driving the right-end spacer guide block 605 to rotate, thereby causing the right-end roller 610 to move along the right-end curved disk 609, thereby causing the right-end clamp... The jaw 6 moves radially along the back clamp 2, thereby clamping the pipe through the right-end jaw 601. The operator then transports the pipe coupling into the main clamp 3. At this point, the guide rod auxiliary connecting plate 313 supports the pipe coupling, further transporting the pipe. The through-beam probe 307 can monitor whether the pipe coupling protrudes from the main clamp 3. Furthermore, the clamping cylinder 503 extends and retracts, thereby moving the synchronous rack 502, which in turn rotates the clamping gear 501, causing the positioning slider 504 to move along the clamping slide rail 505, thus moving the connecting frame 407, which in turn moves the main clamping roller 404 and the auxiliary clamping roller 403, thereby causing the auxiliary... The clamping roller 403 and the auxiliary clamping roller 403 are in close contact with the pipe coupling, thereby supporting the pipe coupling and ensuring its stability. At this time, the extension of the friction belt moving rod 308 can drive the brake band 303 to clamp the brake disc 302, thereby braking the left-end jaw body 6. At this time, the hydraulic motor 9 works, thereby driving the main gear 901 to rotate, thereby driving the auxiliary gear 902 to rotate, and thus driving the gear disc 905 to rotate. At this time, due to the braking effect of the brake band 303, the main jaw plate 301 is prevented from rotating, thereby preventing the left-end spacer guide block 605 from rotating, so that the left-end roller 610 rotates along the left-end curved disc 609, thereby making the left-end fixed... Position frame 607 moves radially along the main jaw plate 301, thereby clamping the pipe coupling with the left-end jaw body 6. When the torque is greater than the resistance of the brake band 303, the left-end curved disc 609 and the left-end jaw body 6 rotate synchronously, thus starting the pipe coupling tightening operation. At this time, the torque on the back clamp 2 can be monitored by the tension sensor 804 and the back clamp tension plate 803, thereby ensuring the accuracy of quick coupling change. At this time, the clamping roller motor 401 works, thereby driving the small pulley 406 to rotate, thereby driving the large pulley 405 to rotate, thereby driving the main clamping roller 404 to rotate, thereby assisting the tightening, thereby ensuring the stability of quick pipe coupling change, and at the same time ensuring the efficiency of quick pipe coupling change.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision quick-change machine for oil pipeline couplings, characterized in that: Includes a base (1), on the top of which a main clamp (3) is fixed. A quick-release platform (4) is fixedly connected to the base (1) at the left end of the main clamp (3). The quick-release platform (4) has two connecting frames (407). Each connecting frame (407) has a secondary clamping roller (403) hinged inside. Each set of secondary clamping rollers (403) has a set of main clamping rollers (404) hinged to the connecting frame (407) at the top. The quick-release platform (4) has a clamping roller platform (5) at the top. Synchronous racks (502) are fixed at both ends of the clamping roller platform (5). Main clamping jaws (301) are provided at both ends of the main clamp (3). A brake disc (302) is fixed to the right side of the main clamping jaw (301). A brake band (303) is slidably connected to the outside of the brake disc (302). A tension band (303) is provided at the right end of the brake band (303). 304), the top of the base (1) is also fixed with a slide rail (101), the top of the slide rail (101) is provided with a back clamp bracket (8), the top of the back clamp bracket (8) is fixed with a back clamp (2), the left and right ends of the back clamp (2) are rotatably connected with back clamp jaw plates (201), the main clamp (3) and the back clamp (2) are provided with several clamp teeth (6), each clamp tooth (6) is provided with a positioning frame (607) outside, each positioning frame (607) is slidably connected with a roller (610), and a spacer guide block (605) is tightly fitted between two adjacent positioning frames (607). The back clamp (2) is provided with a back clamp clamping rod (701) at the rear end, the main clamp (3) is fixed with an outer ring full roller bearing (311), and the inner ring of the outer ring full roller bearing (311) is fixed with an inner ring full roller bearing (312).

2. The high-precision quick-change machine for oil pipeline couplings according to claim 1, characterized in that: The top of the slide rail (101) is slidably connected to a slider (801), the slider (801) is fixedly connected to the back clamp bracket (8) at its top, the right end of the back clamp bracket (8) is fixed with a photoelectric sensor (802), the left end of the back clamp bracket (8) is fixed with a pneumatic push rod (102), the other end of the pneumatic push rod (102) is fixedly connected to the gear box (305) at the bottom of the main clamp (3), the right end of the back clamp bracket (8) is hinged with a back clamp tension plate (803), the bottom of the back clamp tension plate (803) is hinged with a tension sensor (804), the tension sensor (804) is hinged with the slider (801), each back clamp rotation arm (7) is hinged with the back clamp clamping rod (701) at its rear end, and a connecting block (702) is fixed inside each back clamp rotation arm (7).

3. The high-precision quick-change machine for oil pipeline couplings according to claim 2, characterized in that: Each jaw body (6) has jaws (601) detachably connected inside. The jaw body (6) and the positioning frame (607) outside it are fastened together by positioning bolts (608). Each spacer guide block (605) has a guide key (606) fixed to its exterior. Each connecting block (702) is fixedly connected to the guide key (606) inside it. Each set of rollers (610) has a curved disc (609) slidably connected to its exterior. The curved disc (609) at the left end is fixedly connected to the main jaw plate (301), and the curved disc (609) at the right end is fixedly connected to the back jaw (2). The main jaw plate (301) is fixedly connected to the inner ring of the outer full roller bearing (311). Each positioning frame (607) is fixed with an inner positioning pin (604). Each inner positioning pin (604) is provided with an outer positioning pin (603). The right-end outer positioning pin (603) is fixedly connected to the back jaw plate (201). The left-end outer positioning pin (603) is fixedly connected to the main jaw plate (301). Each outer positioning pin (603) is fixed with a return spring (602) between itself and the outer positioning pin (603) outside it.

4. A high-precision quick-change machine for oil pipeline couplings according to claim 3, characterized in that: The brake band (303) has friction band moving rods (308) hinged at both ends. Each friction band moving rod (308) is fixedly connected to the outer ring of the outer ring full roller bearing (311). The tension band (304) has tension springs (309) hinged at both ends. Each tension spring (309) has a tension bolt (310) fixed at its bottom. Each tension bolt (310) is fastened to the lower end of the tension band (304) by bolts. The right end of the main clamp (3) also has two through-beam probe brackets (306). Each through-beam probe bracket (306) has a through-beam probe (307) fixed on it. The left end of the main clamp (3) has a guide rod auxiliary connecting plate (313). A probe (314) is provided on the outside of the connecting plate (313). A gear disk (905) is fixed on the outside of the curve disk (609) on the left end. A secondary gear (902) is meshed with the bottom of the gear disk (905). A main gear (901) is meshed with the bottom of the secondary gear (902). A main gear bearing (904) is fixed on the outside of the rotating shaft of the main gear (901). The outer ring of the main gear bearing (904) is fixedly connected to the gear box (305). A secondary gear bearing (903) is fixed inside the secondary gear (902). The inner ring of the secondary gear bearing (903) is fixedly connected to the gear box (305) through the rotating shaft. A hydraulic motor (9) is rotatably connected to the left end of the rotating shaft of the main gear (901).

5. A high-precision quick-change machine for oil pipeline couplings according to claim 4, characterized in that: Each connecting frame (407) has a clamping roller motor (401) fixed externally. Each clamping roller motor (401) has a small pulley (406) rotatably connected to its left end. Each small pulley (406) has a large pulley (405) connected to its top via a belt drive. Each large pulley (405) has a belt guard (402) on its outside. The shaft of each large pulley (405) is fixedly connected to the main clamping roller (404) at its right end. Each connecting frame (407) has a positioning slider (504) fixed to its top. Each positioning slider (504) has a clamping cylinder (503) fixed to its top. The telescopic end of each clamping cylinder (503) is fixedly connected to the clamping roller platform (5). A clamping gear (501) meshes between the two synchronous racks (502). A clamping slide rail (505) is slidably connected to the top of the two positioning sliders (504). The clamping slide rail (505) is fixedly connected to the clamping roller platform (5).

Images