A flexible automatic gauge device

Abstract

A flexible automatic reaming equipment. It includes a main body frame, an intelligent reaming device, a winch pressing plate, a bamboo joint self-locking bending chain, a winch buffer support, a winch, a driving motor, a reaming rod support frame, a laser range finder, a torque sensor and a controller. The flexible automatic reaming equipment has the advantages of small occupied space, high automation level and small labor intensity. The equipment has the functions of automatic center alignment, in-pipe exploration and resistance positioning, and can realize casing reaming, in-pipe situation exploration, inner wall defect positioning and other functions, and can be applied to casing full-length reaming, assembly secondary reaming, finished casing inspection and other processes. The bamboo joint self-locking bending chain has novel structure and can be horizontally self-locked and bent unlocked.

Description

Technical Field

[0001] This invention belongs to the field of casing production technology, and specifically relates to a flexible automatic gauging device. Background Technology

[0002] Oilfield casing is primarily used to support the wellbore after drilling completion, ensuring the smooth operation of the drilling process. After the casing is run into the well, if there are pits or foreign objects adhering to the inner wall, it can easily cause inspection equipment to become stuck inside the casing. In severe cases, this can even affect subsequent technical casing runs. Therefore, a gauging process must be included in the production of oilfield casing.

[0003] Currently, the gauging process for casing on-site is divided into full-length gauging of the steel pipe and secondary gauging after coupling machine tightening. One method for full-length gauging uses pneumatic gauging, where a gauging rod is manually inserted into the gauging end. High-pressure airflow input at the gauging end pushes the gauging rod through the inner bore of the pipe, and then a belt transports the gauging rod back to the gauging end to complete the gauging. Secondary gauging is performed manually by holding the gauging rod. Casing manufacturers mainly use three types of gauging methods:

[0004] 1. Mechanical steel pipe diameter

[0005] (1) It occupies a large area and requires a pipe with a diameter equivalent to that of the steel pipe.

[0006] (2) Applicable to steel pipes with an outer diameter of 114mm~340mm;

[0007] (3) Applicable steel pipe lengths of 6m to 15m;

[0008] (4) The caliper needs to pass through the steel pipe twice, which takes a long time and is infrequent;

[0009] (5) The structure is complex, the initial investment is high, and it is difficult to maintain.

[0010] 2. Pneumatic steel pipe caliper driven by an air pump

[0011] (1) Small footprint;

[0012] (2) Applicable to steel pipes with an outer diameter of 48mm~178mm;

[0013] (3) Applicable steel pipe lengths of 6m to 15m;

[0014] (4) The caliper needs to pass through the steel pipe twice, which takes a long time and is infrequent;

[0015] (5) The air pump is noisy when it is working.

[0016] 3. Pneumatic steel pipe caliper driven by compressed air

[0017] (1) Small footprint;

[0018] (2) Applicable to steel pipes with an outer diameter of 48mm~508mm;

[0019] (3) Applicable steel pipe lengths from 6m to 18m;

[0020] (4) The caliper passes through the steel pipe in a single pass, which takes a short time and is frequent, but the disadvantage is that it is expensive. Summary of the Invention

[0021] To address the aforementioned problems, the present invention aims to provide a flexible automatic gauging device.

[0022] To achieve the above objectives, the flexible automatic caliper provided by this invention includes a main frame, an intelligent caliper device, a winch pressure plate, a bamboo-joint self-locking bending chain, a winch buffer bracket, a winch, a drive motor, a caliper bar support frame, a laser rangefinder, a torque sensor, and a controller. The main frame is a rectangular groove with an open top, and two right-angled grooves extending laterally are spaced apart on the front bottom surface, serving as guide rails for the caliper bar support frame. The upper end of the caliper bar support frame is supported on the rear bottom of the intelligent caliper device. Two sets of winch buffer brackets are respectively arranged on the rear sides of the main frame. The drive motor is mounted on one set of winch buffer brackets, with the drive shaft arranged laterally, and the outer end of the drive shaft supported by a bearing seat mounted on the upper end of the other set of winch buffer brackets. The center of the winch is mounted on the drive motor. The drive shaft of the machine has a groove formed by an inward indentation in the middle of its outer circumference. The bamboo-joint self-locking bending chain is wound in the groove of the winch, with its inner end fixed to the winch and its outer end connected to the rear end of the intelligent caliper. The winch pressure plate consists of four columns and a top plate. The lower ends of the four columns are fixed to the rear sides of the main frame. The top plate is located above the winch, and a groove extending in the front-rear direction is provided in the middle of the bottom surface of the top plate. This groove is used to compress the bamboo-joint self-locking bending chain, maintain the stability of the bamboo-joint self-locking bending chain when it is horizontal, and unlock the bamboo-joint self-locking bending chain. A torque sensor is installed on the winch. A laser rangefinder is installed in the middle of the front end of the top plate on the winch pressure plate. The controller is wirelessly connected to the electrical components on the drive motor, laser rangefinder, torque sensor, intelligent caliper 2, and caliper support frame.

[0023] The intelligent caliper includes guide wheels, guide sleeves, iron sleeves, image transmission devices, caliper rods, and caliper bars. The guide sleeve is a stepped cylindrical structure with a diameter that gradually increases from front to back, covered with an iron sleeve, and its rear end is fixed to the front end of the caliper bar. The image transmission device is embedded in the middle of the front end. Multiple guide wheels are spaced apart on the outer circumference of the iron sleeve. The front end of the caliper rod is fixed to the rear axis of the caliper bar, and its rear end is connected to the outer end of the bamboo-joint self-locking bending chain. The image transmission device includes an infrared probe, a photosensitive sensor, and a wireless camera, all wirelessly connected to the controller.

[0024] The guide sleeve and guide wheel are made of polyamide fiber.

[0025] The bamboo-joint self-locking bending chain consists of multiple links connected end-to-end. Each link includes a link shell, a buckle, a lever, a tension spring, and a return spring. The link shell is a rectangular structure with open ends and rounded corners at the bottom. The rear sides of the two side walls form a front and a rear slot, and the inner wall of the rear top surface has a spring fixing point. The lower rear end of the previous link shell is connected to the lower front end of the next link shell via a fixing plate, allowing the link to bend in one direction. Under the action of the winch pressure plate and the slide 20, the bamboo-joint self-locking bending chain maintains stability when horizontal. The rounded corners prevent jamming during bending. The lever consists of an inner baffle and a locking pin. Each inner baffle is attached to the inside of the front slot on the link shell, and the locking pin is connected to the outer side of the inner baffle and inserted into the front slot. The buckle is a U-shaped structure consisting of two side plates, a connecting plate, a locking block, and a lever baffle. The middle connecting plate is vertically arranged, with its upper end fixed to the upper front end of the rear link housing, and a spring fixing groove formed on its upper part. The rear ends of the two side plates are connected to the lower edges of the two sides of the connecting plate, and their front ends protrude outside the front port of the link housing and can be inserted into the rear part of the front link housing. The front ends are located inside the pawl on the same side. Two locking blocks are fixed to the front outer surfaces of the two side plates respectively, and can be inserted into or disengaged from the rear locking slot on the front link housing. A pawl baffle is provided on the bottom front surface of each side plate to prevent the latch from interfering with the pawl when the link housing rotates. The two ends of the tension spring are respectively connected to the spring fixing point on the front link housing and the spring fixing groove on the connecting plate of the rear link. The two ends of one return spring are respectively connected to the inner surfaces of the two inner baffles, and the two ends of another return spring are respectively connected to the front inner surfaces of the two side plates.

[0026] Each set of winch buffer brackets includes a lower support plate, two support rods, an upper support plate, and a spring; the lower support plate is horizontally fixed to one side of the rear of the main frame; the lower ends of the two support rods are respectively fixed to the front and rear of the lower support plate, and the upper ends are simultaneously connected to the bottom surface of the upper support plate; the top surface of the upper support plate is used to install a drive motor or bearing seat; a spring is sleeved on the outside of each support rod.

[0027] The bore rod support frame includes a bracket, a base plate, an X-axis motor, a Y-axis motor, a worm gear, rolling bearings, and a lead screw nut seat. A rolling bearing is installed on each of the front and rear sides of the base plate, and the four rolling bearings are respectively located in two right-angle grooves of the main frame. A circular sleeve is located in the middle of the base plate. The lead screw nut seat is installed outside the circular sleeve. The lower half of the bracket is a worm gear lead screw that is vertically inserted into the circular sleeve, and the upper end is provided with a roller for supporting the bore rod. The Y-axis motor is installed on the base plate, with its drive shaft extending upwards and its upper end connected to the center hole of the worm gear. The worm gear meshes with the worm gear lead screw on the bracket. The X-axis motor is fixed to the inner wall of the main frame, and its drive shaft is connected to the lead screw nut seat via a lead screw.

[0028] The guide bar support frame is also provided with two base plate clamps whose upper ends are mounted on the bottom surface of the base plate and clamped on the inner ends of two right-angle sliding grooves.

[0029] The controller is a computer.

[0030] The flexible automatic gauging equipment provided by this invention has the following advantages: small footprint, high level of automation, and low labor intensity; it has automatic center alignment, pipe inspection, and obstruction location functions, and can realize functions such as casing gauging, pipe condition inspection, and inner wall defect location. It can be applied to various processes such as full-length casing gauging, secondary gauging at assembly stations, and finished casing inspection; the bamboo-joint self-locking bending chain structure design is novel and can be horizontally self-locked and bent to unlock. Attached Figure Description

[0031] Figure 1 This is a side view of the flexible automatic gauging device provided by the present invention.

[0032] Figure 2 This is a front view of the flexible automatic gauging device provided by the present invention.

[0033] Figure 3 This is a top view of the bamboo-joint self-locking bending chain in this invention.

[0034] Figure 4 This is a side view of the bamboo-joint self-locking bending chain in this invention.

[0035] Figure 5 This is a top view of the outer shell of the upper link of the bamboo-joint self-locking curved chain in this invention.

[0036] Figure 6 This is a side view of the outer shell of the upper link of the bamboo-joint self-locking curved chain in this invention.

[0037] Figure 7 This is a top view of the buckle on the bamboo-joint self-locking curved chain of the present invention.

[0038] Figure 8 This is a side view of the buckle on the bamboo-joint self-locking curved chain of the present invention.

[0039] Figure 9 This is a front view of the buckle on the bamboo-joint self-locking curved chain of the present invention.

[0040] Figure 10 This is a schematic diagram of the paddle structure on the bamboo-joint self-locking curved chain in this invention.

[0041] Figure 11 This is a side view of the bore bar support frame in this invention.

[0042] Figure 12 This is a front view of the bore bar support frame in this invention.

[0043] Figure 13 This is a side view of the lower structure of the bore bar support frame in this invention.

[0044] Figure 14 This is a front view of the lower structure of the bore bar support frame in this invention.

[0045] Figure 15 This is a top view of the lower structure of the bore bar support frame in this invention.

[0046] Figure 16 This is a side view of the intelligent guide tube device in this invention.

[0047] Figure 17 This is a front view of the intelligent guide tube device in this invention.

[0048] Figure 18 This is a schematic diagram of the working process of the flexible automatic gauging device provided by the present invention. Detailed Implementation

[0049] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0050] like Figures 1-18As shown, the flexible automatic grooving device provided by the present invention includes a main frame 1, an intelligent grooving device 2, a winch pressure plate 3, a bamboo-joint self-locking bending chain 4, a winch buffer bracket 5, a winch 6, a drive motor 7, a grooving bar support frame 8, a laser rangefinder 9, a torque sensor 23, and a controller; wherein, the main frame 1 is a cuboid-shaped groove with an open upper end, and two right-angled sliding grooves 21 extending in the left-right direction are provided at intervals on the front bottom surface, which serve as guide rails for the grooving bar support frame 8; the upper end of the grooving bar support frame 8 is supported on the rear bottom of the intelligent grooving device 2; two sets of winch buffer brackets 5 are respectively arranged on the rear sides of the main frame 1; the drive motor 7 is mounted on one set of winch buffer brackets 5, the drive shaft is arranged in the left-right direction, and the outer end of the drive shaft is supported by a bearing seat mounted on the upper end of the other set of winch buffer brackets 5; the center of the winch 6 is mounted on the drive motor 7. A groove is formed inwardly at the center of the outer circumference of the drive shaft; the bamboo-joint self-locking bending chain 4 is wound in the groove of the winch 6, with its inner end fixed to the winch 6 and its outer end connected to the rear end of the intelligent ducting device 2; the winch pressure plate 3 consists of four columns and a top plate, with the lower ends of the four columns fixed to the rear sides of the main frame 1, and the top plate located above the winch 6, with a sliding groove 20 extending in the front-rear direction at the center of the bottom surface of the top plate, used to compress the bamboo-joint self-locking bending chain 4, maintain the stability of the bamboo-joint self-locking bending chain 4 when it is horizontal, and realize the unlocking of the bamboo-joint self-locking bending chain 4; the torque sensor 23 is installed on the winch 6; the laser rangefinder 9 is installed at the front center of the top plate of the winch pressure plate 3; the controller is wirelessly connected to the electrical components on the drive motor 7, the laser rangefinder 9, the torque sensor 23, the intelligent ducting device 2, and the ducting bar support frame 8.

[0051] The intelligent caliper 2 includes guide wheels 10, guide sleeves 11, iron sleeves 12, image transmission devices 13, caliper rods 22, and caliper bars 24. The guide sleeves 11 are stepped cylindrical structures with a gradually increasing diameter from front to back, covered with iron sleeves 12, and the rear end is fixed to the front end of the caliper bar 24. The image transmission device 13 is embedded in the middle of the front end. Multiple guide wheels 10 are spaced apart and installed on the outer circumference of the iron sleeves 12. The front end of the caliper rod 22 is fixed to the rear axis of the caliper bar 24, and the rear end is connected to the outer end of the bamboo-joint self-locking bending chain 4. The image transmission device 13 includes an infrared probe, a photosensitive sensor, and a wireless camera, which are wirelessly connected to the controller.

[0052] The guide sleeve 11 and guide wheel 10 are made of polyamide fiber.

[0053] The bamboo-joint self-locking bending chain 4 is composed of multiple links connected end to end. Each link includes a link housing 25, a buckle 14, a lever 15, a tension spring 16, and a return spring 17. The link housing 25 is a cuboid structure with open ends and rounded bottom corners. The rear sides of both side walls have a front locking groove 43 and a rear locking groove 31 arranged side-by-side. A spring fixing point 32 is provided on the inner wall of the rear part of the top surface. The lower rear end of the previous link housing 25 is connected to the lower front end of the next link housing 25 by a fixing piece. The chain link can achieve unidirectional bending and, under the action of the winch pressure plate 3 and the slide groove 20, can maintain the stability of the bamboo-joint self-locking bending chain 4 when horizontal. The rounded corners can prevent jamming during bending. The lever 15 is composed of an inner baffle 39 and a locking post 40. Each inner baffle 39 is attached to the inside of the front locking groove 43 on the chain link housing 25, and the locking post 40 is connected to the outer surface of the inner baffle 39 and inserted into the front locking groove 43. The buckle 14 has a U-shaped structure and is composed of two side plates 36, a connecting plate 37, a locking block 38, and a lever baffle 34. The connecting plate 37 is vertically arranged, with its upper end fixed to the upper front end of the rear link housing 25, and a spring fixing groove 33 is formed on its upper part; the rear ends of the two side plates 36 are connected to the lower sides of the connecting plate 37, and their front ends protrude outside the front port of the link housing 25 and can be inserted into the rear part of the front link housing 25, with their front ends located inside the paddle 15 on the same side; two locking blocks 38 are respectively fixed to the outer front surface of the two side plates 36, and can be inserted into the rear locking slot 31 on the front link housing 25 or from the... The buckle 14 disengages from the rear slot 31; a paddle baffle 34 is provided on the bottom front surface of each of the two side plates 36 to prevent the buckle 14 from interfering with the paddle 15 when the chain link housing 25 rotates; the two ends of the tension spring 16 are respectively connected to the spring fixing point 32 of the front chain link housing 25 and the spring fixing groove 33 of the connecting plate 37 of the rear chain link; the two ends of a return spring 17 are respectively connected to the inner side of the two inner baffles 39, and the two ends of another return spring 17 are respectively connected to the front inner side of the two side plates 36.

[0054] Each set of winch buffer brackets 5 includes a lower support plate 44, two support rods 32, an upper support plate 33, and a spring 34; the lower support plate 44 is horizontally fixed to one side of the rear of the main frame 1; the lower ends of the two support rods 32 are respectively fixed to the front and rear of the lower support plate 44, and the upper ends are simultaneously connected to the bottom surface of the upper support plate 33; the top surface of the upper support plate 33 is used to install a drive motor 7 or a bearing seat; a spring 34 is sleeved on the outside of each support rod 32.

[0055] The bore rod support frame 8 includes a bracket 28, a base plate 26, an X-axis motor 19, a Y-axis motor 18, a turbine 29, rolling bearings 30, and a lead screw nut seat 34. A rolling bearing 30 is installed on each of the front and rear sides of the base plate 26, and the four rolling bearings 30 are respectively arranged in two right-angle grooves 21 of the main frame 1. A circular sleeve 35 is provided in the middle of the base plate 26. The lead screw nut seat 34 is installed outside the circular sleeve 35. The lower half of the bracket 28 is a turbine lead screw inserted vertically into the circular sleeve 35, and the upper end is provided with a roller for supporting the bore rod 22. The Y-axis motor 18 is installed on the base plate 26, with its drive shaft extending upwards and its upper end connected to the center hole of the turbine 29. The turbine 29 meshes with the turbine lead screw on the bracket 28. The X-axis motor 19 is fixed to the inner wall of the main frame 1, and its drive shaft is connected to the lead screw nut seat 34 via a lead screw.

[0056] The bore bar support frame 8 is also provided with two bottom plate clamps 27 whose upper ends are installed on the bottom surface of the bottom plate 26 and clamped on the inner ends of the two right-angle slide grooves 21.

[0057] The controller is a computer.

[0058] The working principle of the flexible automatic gauging device provided by this invention is described below:

[0059] When the sleeve 41 and coupling 42 reach the designated position, under the control of the controller, the infrared probe in the guide sleeve 11 of this flexible automatic gauging device starts to detect the center position once it detects the outer end of the coupling 42. Then, the detection signal is wirelessly transmitted to the controller. The controller calculates the deviation between the center of the gauging rod 24 on the intelligent gauging device 2 and the center of the coupling 42 based on the above signal. Then, it sends instructions to the X-axis motor 19 and Y-axis motor 18 on the gauging rod support frame 8 to adjust the position of the gauging rod 24 to ensure that the center position of the gauging rod 24 and the coupling 42 are aligned. At the same time, the wireless camera starts recording and then transmits the real-time image to the controller. The laser rangefinder 9 starts to detect the real-time distance between itself and the gauging rod 24 and then transmits it to the controller. The controller controls the drive motor 7 to start rotating in the forward direction. The winch 6 drives the bamboo-joint self-locking one-way bending chain 4 to extend forward. When the adjacent chain links are in a horizontal state, the locking block 38 on the buckle 14 of the subsequent chain link will engage with the rear locking groove 31 on the preceding chain link, thereby locking the adjacent ends of the two chain links to ensure that the duct rod 24 extends toward the coupling 42 and the sleeve 41, thus preventing the bamboo-joint self-locking one-way bending chain 4 from bending upward and achieving the required thrust for the ducting function. The guide wheel 10's straightening action ensures that the duct rod 24 will not damage the threads of the coupling 42, while also improving the service life of the duct rod 24. When the duct rod 24 is about to reach the other end face of the sleeve 41, the photosensitive sensor senses the change in light and transmits the signal to the controller, which then controls the drive motor. Machine 7 begins to rotate in reverse, driving the bamboo-joint self-locking bending chain 4 and the guide bar 24 to retract via winch 6. When the lever 15 passes through the groove 20 on the winch pressure plate 3, the inner wall of the groove 20 will press the two levers 15 inward. The inner side of the lever 15 then presses the two side plates 36 on the buckle 14, causing the locking block 38 to disengage from the corresponding rear locking groove 31, completing the unlocking. At this time, the chain link can bend inward, and the tension spring 16 is in a stretched state. When there is no compression, the lever 15 returns to its initial position under the action of the return spring 17. The tension spring 16 can ensure the horizontal lateral movement of the bamboo-joint self-locking one-way bending chain 4 under the driving force of winch 6 and the pressure of winch pressure plate 3. Since the bamboo-joint self-locking one-way bending chain 4 can be bent, it can be completely wound on winch 6. In addition, since the winch buffer bracket 5 is compressible, it can ensure the winding of multiple layers of bamboo-joint self-locking one-way bending chain 4, thereby saving storage space and reducing the floor space occupied by this equipment. In addition, during the purging process, the controller records the purging length through real-time data transmitted by the laser rangefinder 9 and calculates the total length of the sleeve. The torque sensor 23 can also be used to monitor the load of the drive motor 7 at any time. If the torque value displayed by the torque sensor 23 changes drastically, it indicates that the purging is obstructed. The controller immediately controls the drive motor 7 to reverse, thereby pulling back the purging bar 24 to avoid excessive torque that could burn out the drive motor 7.

Claims

1. A flexible automatic gauge control device characterized by: The flexible automatic calibrating device comprises a main frame (1), an intelligent calibrating device (2), a winch pressing plate (3), a bamboo joint self-locking bending chain (4), a winch buffer support (5), a winch (6), a driving motor (7), a calibrating rod support frame (8), a laser range finder (9), a torque sensor (23) and a controller; wherein the main frame (1) is a long rectangular groove body with an open upper end, two straight angle sliding grooves (21) extending in the left-right direction are arranged on the front bottom surface in intervals, and are used as guide rails for the calibrating rod support frame (8); the upper end of the calibrating rod support frame (8) is supported on the rear bottom of the intelligent calibrating device (2); two groups of winch buffer supports (5) are arranged on the rear sides of the main frame (1); the driving motor (7) is installed on one group of winch buffer supports (5), the transmission shaft is arranged in the left-right direction, and the outer end of the transmission shaft is supported by the bearing seat installed on the upper end of the other group of winch buffer supports (5); the center of the winch (6) is installed in the middle of the transmission shaft of the driving motor (7), and the middle of the outer circumferential surface is recessed to form a groove; the bamboo joint self-locking bending chain (4) is wound in the groove of the winch (6), the inner end is fixed on the winch (6), and the outer end is connected to the rear end of the intelligent calibrating device (2); the winch pressing plate (3) is composed of four columns and a top plate, the lower ends of the four columns are fixed on the rear sides of the main frame (1), the top plate is located above the winch (6), and the middle of the bottom surface of the top plate is provided with a sliding groove (20) extending in the front-rear direction, which is used for pressing the bamboo joint self-locking bending chain (4), maintaining the stability of the bamboo joint self-locking bending chain (4) when it is horizontal, and realizing the unlocking of the bamboo joint self-locking bending chain (4); the torque sensor (23) is installed on the winch (6); the laser range finder (9) is installed on the front end of the top plate of the winch pressing plate (3); the controller is wirelessly connected with the driving motor (7), the laser range finder (9), the torque sensor (23), the intelligent calibrating device (2) and the electrical components on the calibrating rod support frame (8). The bamboo joint self-locking bending chain (4) is composed of a plurality of chain links connected end to end, each chain link comprising a chain link shell (25), a buckle (14), a push piece (15), a tension spring (16) and a return spring (17); the chain link shell (25) is a long rectangular body structure with open ends, the bottom corners are all rounded, the rear parts of the two side walls are formed with a front clamping groove (43) and a rear clamping groove (31) side by side, and the inner wall of the rear part of the top surface is provided with a spring fixing point; the rear lower part of the front chain link shell (25) is connected with the front lower part of the rear chain link shell (25) through a fixing piece, so that the chain link can realize one-way bending, and the stability of the bamboo joint self-locking bending chain (4) can be maintained when the winch pressure plate (3) and the sliding groove (20) are under the action of the winch pressure plate (3) and the sliding groove (20), and the rounded corners can prevent jamming when bending; the push piece (15) is composed of an inner baffle (39) and a clamping column (40), each inner baffle (39) is attached to the inner side of the front clamping groove (43) of the chain link shell (25), and the clamping column (40) is connected to the outer side of the inner baffle (39) and inserted into the front clamping groove (43); the buckle (14) is a U-shaped structure, which is composed of two side plates (36), a connecting plate (37), a clamping block (38) and a push piece baffle, wherein the connecting plate (37) is vertically arranged, the upper end is fixed to the front end of the upper part of the rear chain link shell (25), and the upper part is formed with a spring fixing groove; the rear ends of the two side plates (36) are connected to the lower parts of the two side edges of the connecting plate (37), the front parts protrude outside the front end of the chain link shell (25) and can be inserted into the rear part of the front chain link shell (25), and the front ends are located inside the push piece (15) on the same side; two clamping blocks (38) are respectively fixed to the outer side surfaces of the front parts of the two side plates (36) and can be inserted into or pulled out of the rear clamping groove (31) on the front chain link shell (25); the front end bottom surfaces of the two side plates (36) are respectively provided with a push piece baffle to prevent the buckle (14) from interfering with the push piece (15) when the chain link shell (25) rotates; the two ends of the tension spring (16) are respectively connected to the spring fixing point of the front chain link shell (25) and the spring fixing groove of the connecting plate (37) of the rear chain link; the two ends of one return spring (17) are respectively connected to the inner side surfaces of the two inner baffles (39), and the two ends of another return spring (17) are respectively connected to the inner side surfaces of the front parts of the two side plates (36).

2. The flexible automatic gauge cornering device of claim 1, wherein: The intelligent gauge passing device (2) comprises a guide wheel (10), a guide sleeve (11), a ferrous sleeve (12), an image transmission device (13), a gauge passing rod (22) and a gauge passing stick (24); the guide sleeve (11) is a stepped cylinder structure with a diameter gradually increasing from front to back, the outer surface is covered with the ferrous sleeve (12), the rear end is fixed at the front end of the gauge passing stick (24), and the front end middle part is embedded with the image transmission device (13); a plurality of guide wheels (10) are installed on the outer circumferential surface of the ferrous sleeve (12) at intervals; the front end of the gauge passing rod (22) is fixed at the rear end shaft center of the gauge passing stick (24), and the rear end is connected to the outer end of the bamboo joint self-locking bending chain (4); the image transmission device (13) comprises an infrared probe, a photosensitive sensor and a wireless camera which are wirelessly connected with the controller respectively.

3. The flexible automatic gauge cornering device of claim 2, wherein: The guide sleeve (11) and the guide wheel (10) are made of polyamide fibers.

4. The flexible automatic gauge cornering device of claim 1, wherein: Each group of winch buffer supports (5) comprises a lower support plate (44), two support rods, an upper support plate and a spring; the lower support plate (44) is horizontally fixed at the rear side of the main body frame (1); the lower ends of the two support rods are respectively fixed at the front and rear parts of the lower support plate (44), and the upper ends are simultaneously connected to the bottom surface of the upper support plate; the top surface of the upper support plate is used for arranging a driving motor (7) or a bearing seat; each support rod is externally sleeved with a spring.

5. The flexible automatic gauge cornering device of claim 1, wherein: The gauge passing stick support frame (8) comprises a support frame (28), a bottom plate (26), an X-axis motor (19), a Y-axis motor (18), a turbine (29), a rolling bearing (30) and a screw nut seat; two rolling bearings (30) are respectively arranged at the front and rear parts of the two sides of the bottom plate (26), and the four rolling bearings (30) are arranged in the two right-angle sliding grooves (21) of the main body frame (1); a circular sleeve (35) is arranged at the middle part of the bottom plate (26); the screw nut seat is installed outside the circular sleeve (35); the lower half of the support frame (28) is a turbine screw rod which is vertically inserted into the circular sleeve (35), and the upper end is provided with a roller shaft for supporting the gauge passing rod (22); the Y-axis motor (18) is installed on the bottom plate (26), the transmission shaft is upwardly extended and the upper end is connected into the center hole of the turbine (29); the turbine (29) is engaged with the turbine screw rod on the support frame (28); the X-axis motor (19) is fixed on the inner wall of the main body frame (1), and the transmission shaft is connected with the screw nut seat through the screw rod.

6. The flexible automatic gauge cornering device of claim 5, wherein: Two bottom plate clamping plates (27) are further arranged on the gauge passing stick support frame (8), the upper ends of the two bottom plate clamping plates (27) are arranged on the bottom surface of the bottom plate (26), and the two bottom plate clamping plates (27) are clamped on the inner side ends of the two right-angle sliding grooves (21).

7. The flexible automatic gauge cornering device of claim 1, wherein: The controller is a computer.

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