An eccentric spiral rolling oil pipe diameter gauge

Abstract

This eccentric spiral rolling oil pipe diameter gauge belongs to the field of oil drilling engineering technology. Its guide head is threadedly connected to the front cover, which plugs into the front joint and the front end of the housing. A window is provided at the lower front end of the housing. Three front straightening mechanisms are evenly distributed around the front cover. The spiral spring assembly of the front cover's center tightening mechanism shaft I is supported by the shaft hole II at the left end of the eccentric support. The eccentric end shaft at the right end of the eccentric support is connected to the left end of the drive gear train via a bearing and a bearing seat. The right end of the drive gear train is connected to the motor via a coupling. The two sets of drive gear trains are connected by a flange in the middle, with the wheels 45 degrees apart. A spiral spring is installed in the center hole. A partition plate and a front bushing are installed at the left end of the motor, and a rear bushing is installed at the right end of the motor. The motor, power supply, and control circuit board are installed on the right support plate of the housing. The right end of the housing plugs into the rear joint and rear cover in sequence. The rear joint has three rear straightening mechanisms evenly distributed around the circumference. The end face of the rear cover is equipped with a handle, a display screen, a charging port, and a power switch.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling engineering, in particular to an eccentric spiral rolling oil pipe diameter gauge. Background Art

[0002] A drift gauge for the internal diameter of oil tubing is a cylindrical tool used to check the roundness of a pipe's cross-section. Passing the gauge inside the casing allows the gauge to detect deformation and debris. Currently, the most common methods for calibrating the internal diameter of oil tubing in China are manual or pneumatic. Manual calibrating involves inserting the gauge into one end of the pipe and manually pulling it through a pipe fixture using a wire rope. This method is inefficient and wastes significant manpower. Alternatively, high-pressure pneumatic calibrating involves inserting the gauge into one end of the pipe and using high-pressure gas to push it from behind, forcing it out the other end. This method is quick, simple, and labor-saving, but air pressure control is difficult and cannot be quantitatively controlled. This operation is also dangerous. If the high-pressure gas line connection fails, the strong airflow and the resulting rebound force in the pipe could endanger the operator's safety, compromising safe production. Furthermore, this method requires high-pressure pneumatic equipment on site, placing additional requirements on the jobsite. The third method is to use a metal push rod to push the diameter gauge. The length of the push rod must be greater than or equal to the length of the pipe to push the diameter gauge out. This method has high labor intensity and low work efficiency.

[0003] At present, Chinese patent CN201720132973.X discloses a self-propelled casing diameter detection gauge, in which a control device is installed on the diameter gauge, a power supply is placed inside the diameter gauge, an elastic support device is installed at the right end of the diameter gauge, the right end of the connecting rod is connected to the left end of the diameter gauge, a driving wheel is installed on the connecting rod, a motor is installed on the connecting rod, the motor is connected to the driving wheel, the driving wheel is installed on one side of the body, a signal probe is installed in the side hole of the diameter gauge, the power supply is connected to the control device through an electric wire, the motor and the control device are connected by a wire, the signal probe and the control device are connected by a signal line, the motor, the driving wheel, the control device, the power supply, the diameter gauge, the signal probe, the elastic support device, and the connecting rod are assembled into one and placed in the casing; although this patent can achieve self-propelled walking, this patent relies on the friction between a single driving wheel and the pipe wall to form walking, the contact area between the driving wheel and the pipe wall is small, and the walking stability is poor.

[0004] Chinese patent CN 217815709 U discloses a petroleum pipe diameter robot with speed regulation. The schematic diagram shows an internal motor, a drive wheel fixed to the front end of the motor output rod, a brake plate above the drive wheel, and a rectangular block (one) fixed to the inner wall of the robot. While this patent allows for autonomous movement, reverse movement, and speed regulation, it relies on friction between a single drive wheel and the pipe wall. This small contact area between the drive wheel and the pipe wall results in poor reliability.

[0005] Chinese patent CN 217538682 U discloses a variable diameter electric self-propelled casing gauge. The front end of the gauge is provided with a traction device, and the rear end of the traction device is connected to a sliding column at the center point of the front end of the gauge. A compression spring is mounted on the sliding column, and the two ends of the compression spring are respectively connected to the two ends of multiple groups of connecting rod assemblies. Each group of connecting rod assemblies is provided with a traction wheel and a drive motor connected to the traction wheel. Although each group of connecting rod assemblies in this patent is provided with a traction wheel and a drive motor connected to the traction wheel, it also relies on multiple groups of single drive wheels to form friction with the pipe wall for movement. The contact area between the drive wheel and the pipe wall is small, and the movement reliability is poor.

[0006] Chinese Patent CN 217400884 U discloses a tubing gauge and gauge assembly. Similar in structure to that of Chinese Patent CN 217538682 U, it features a variable diameter mechanism and a sliding wheel. The sliding wheel is electrically connected to a power source and is used to drive the gauge body to slide within the tubing. While this patent allows for self-propelled movement, it relies on friction between a single drive wheel and the tubing wall, resulting in a small contact area and poor reliability.

[0007] Chinese patent CN 215761651 U discloses a multifunctional oil pipe diameter gauge. The diameter gauge mechanism consists of a body, a pressure rod, a first spring, a first pressure cap, a pull rod, a leather cup, a piston, an annular oiling brush head, a second spring, several scraping blades, a screw, a washer, an oil storage chamber, a push rod, a second pressure cap, a third spring, a locking nut, and a rotating pin. The diameter scraping uses compressed air as the power source, relying on the compressed gas to generate the thrust during the diameter scraping. Although a buffer mechanism is designed at the rear of the diameter gauge to prevent excessive impact force after the diameter scraping, when the diameter gauge is completed and pushed out of the oil pipe inner diameter, the diameter gauge push rod first pushes against the diameter gauge bracket, which acts as a buffer. However, this patent also requires brackets at both ends of the pipe to prevent excessive impact force after the diameter scraping. The auxiliary device is too cumbersome and inconvenient to install and use.

[0008] Chinese patent CN 212843390 U discloses a casing diameter adjustment device, comprising a diameter gauge disc, a body, and a wireless remote control power drive assembly, wherein the wireless remote control power drive assembly includes running wheels, which are omnidirectional wheels. Two omnidirectional wheels are provided and are respectively installed at the front and rear ends of the body. Although this patent uses two omnidirectional wheels installed at the front and rear ends of the body to replace conventional drive wheels, it effectively solves the problems of poor grip and large power loss of existing wireless remote control casing diameter adjustment devices. However, when the diameter adjustment device is used, because there is no fixed guide end, it is easy to get stuck when entering the pipe, and it is not easy and smooth to enter the pipe.

[0009] Chinese patent CN 213205653 U discloses an automated oil pipe caliper, comprising an outer shell, a centralizer, a power supply, a controller, a drive motor, a drive wheel, and a detection structure. The outer shell is cylindrical, with two sets of centralizers fixedly mounted at either end of the outer shell. The power supply, controller, and drive motor are located inside the outer shell and electrically connected to each other. The detection structure comprises multiple sets of stoppers arranged in a circular array on the outer shell. The stoppers and sliders are arranged side by side in a vertical slot and connected by a compression spring. The detection link is formed by two hinged rod sections, one end hinged to the slider and the other to the vertical slot. The photoelectric switch is movably mounted on the inner wall of the vertical slot between the stopper and the slider. Although this patent allows for self-propelled movement, it relies on friction between a single drive wheel and the pipe wall. The contact area between the drive wheel and the pipe wall is small, resulting in poor grip and significant power loss.

[0010] Chinese patent CN 111536366 A discloses a remote-controlled intelligent path robot, comprising a housing, a drive system, a sensing system, and a control system. The drive system, the sensing system, and the control system are all mounted within the housing. The control system can send and receive instructions to the drive system based on signals received from the sensing system, and the drive system operates upon receiving the instructions from the control system. The sensing system comprises a trigger mechanism, a photoelectric sensor, and a pressure relay. The trigger mechanism comprises a torsion spring, a righting wheel, and a ratchet. The righting wheel is mounted on the housing and partially located outside the housing. A center rod is fixedly provided vertically through the center of the ratchet. The righting wheel is rotationally connected to one end of the center rod of the ratchet in a limited position. A torsion spring is sleeved on the other end of the center rod of the ratchet. The righting wheel can be pressed into the housing when rotating. The righting wheel compresses the torsion spring through the ratchet, and the torsion spring transmits pressure to the pressure relay. The pressure relay and the photoelectric sensor are both connected to the control system circuit. The control system sends forward and reverse instructions to the drive system, and the drive wheel performs forward and reverse movements. Although this patent can achieve self-propelled movement, it relies on friction between a single driving wheel and the pipe wall. The contact area between the driving wheel and the pipe wall is small, and there are problems such as insufficient force of the diameter device to grasp the inner wall of the pipe and large power loss. Summary of the Invention

[0011] The purpose of the present invention is to address the above-mentioned deficiencies and provide an eccentric spiral rolling oil pipe diameter gauge to solve the diameter problem of oil pipes before they are lowered into the well and improve the diameter efficiency of oil pipes.

[0012] The object of the present invention is achieved through the following technical solutions:

[0013] The present invention includes: a guide head, a front end cover, a front joint, a tightening mechanism, a front straightening mechanism, a spiral spring assembly, an eccentric support, a bearing, a bearing seat, a driving wheel system, a partition, a coupling, a housing, a front bushing, a motor, a rear bushing, a support plate, a power supply, a control circuit board, a rear straightening mechanism, a rear joint, a rear end cover, a display screen, a handle, a charging port, a switch, a coil spring, and a micro switch; it is characterized in that: the guide head is threadedly connected to the front end cover, the front end cover is plugged into the front end of the housing and fixed by countersunk screws, a window is provided at the lower front end of the housing, three front straightening mechanisms are evenly distributed circumferentially on the front end cover, one of the front straightening mechanisms is linked to the micro switch, a tightening mechanism is provided at the center of the front end cover, the axis I of the tightening mechanism is provided with a spiral spring assembly, the spring of the spiral spring assembly is inserted into the opening I of the axis I, and the spiral spring assembly is passed through The left end shaft hole II of the eccentric support is supported; the eccentric end shaft of the right end of the eccentric support is provided with a bearing, which is connected to the left end of the driving wheel system through a bearing seat, and the right end of the driving wheel system is connected to the motor through a coupling. The driving wheel system is set into two groups, and the driving wheel system wheels differ by 45°. They are connected by bolts through a flange in the middle, and a coil spring is provided in the center hole. The driving wheel system is arranged at the window of the shell; the left end of the motor is provided with a partition and a front bushing in sequence, and the right end of the motor is provided with a rear bushing. A support plate is provided in the right part of the shell, and the support plate is provided with a motor, a power supply and a control circuit board. The right end of the shell is plugged into the rear joint and the rear end cover in sequence and fixed with countersunk screws. The rear joint is circumferentially evenly provided with three rear straightening mechanisms that are the same as the front straightening mechanism. The end face of the rear end cover is provided with a handle, a display screen is provided in the middle, and a charging port and a power switch are provided on the top; the power adapter is used to charge the power supply.

[0014] Furthermore, the guide head is a "bullet head" type hollow structure, and the right end is provided with an external thread that cooperates with the front end cover.

[0015] Furthermore, the left end of the front connector is provided with a cylindrical cavity for the tightening mechanism, and the right end is provided with three concave terminals evenly distributed and cooperating with the eccentric support.

[0016] Furthermore, a three-petal "plum blossom"-shaped tightening wheel is provided on the shaft I of the tightening mechanism, and an opening I is provided at the right end of the shaft I.

[0017] Furthermore, the support frame of the front straightening mechanism is a "U" structure, with an arc-shaped bottom and an axis hole I provided on the top.

[0018] Furthermore, the eccentric support is a cylinder, and three evenly distributed rectangular arc-shaped convex terminals that cooperate with the front joint are provided at the left end.

[0019] Furthermore, the driving wheel system is provided with a flange on each side, a cross-shaped center hole in the center, and a square hollow structure in the middle. A parallelogram through hole inclined 10 to 30 degrees to the center line is provided on the plane of each hollow structure. A parallelogram "U"-shaped bracket is provided in the through hole, and bosses are provided on both sides of the lower part of the bracket. The width of the bosses is greater than the width of the through hole. The upper size of the bracket is slightly smaller than the size of the through hole. The upper part of the bracket is connected to the wheel through the wheel axle.

[0020] Furthermore, the front bushing is an eccentric circular tube structure, and an opening III is provided at the thinnest part.

[0021] Furthermore, the positive pole of the power supply is connected to the switch, control circuit board, and motor in sequence through a wire. A micro switch is provided between the control circuit board and the motor. The charging port is connected to the positive and negative poles of the power supply respectively through a wire. The negative pole of the power supply is connected to the control circuit board and the motor through a wire.

[0022] Furthermore, the display screen is connected to the control circuit board via a wire.

[0023] Working principle:

[0024] 1. This invention is powered by an electric motor and offers omnidirectional mobility. It is based on a drive train with eight axles equipped with wheels. The eight wheels are circumferentially distributed at 45° angles, with the axles angled 15-30° from the centerline of the drive train. The peripheral axles convert a portion of the wheel steering force into a single wheel normal force.

[0025] 2. The present invention relies on the direction and speed of the respective wheels. The final combination of these forces produces a resultant force vector in any desired direction, thereby ensuring that the pipe can move freely in the direction of the final resultant force vector without changing the direction of the wheels themselves.

[0026] 3. The present invention has eight wheels distributed diagonally on its rim, allowing for lateral sliding. The wheel generatrix is ​​unique; as the wheels rotate around a fixed axle, the envelope of each wheel forms a cylindrical surface, enabling continuous forward rolling.

[0027] 4. The driving wheel system of the present invention has a compact structure and flexible movement. It is an omnidirectional wheel. By combining two such driving wheel systems, the function of omnidirectional movement of pipe diameter can be realized more flexibly and conveniently.

[0028] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0030] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention uses a drive wheel system installed at the front and rear ends of the machine body. The omnidirectional wheels fit closely to the inner wall of the pipe to be cleared, thus providing a guiding function and effectively reducing the power loss of the caliper. At the same time, the omnidirectional wheels also have the characteristic of strong gripping force on the pipe wall, which can improve the frictional power during travel.

[0033] 2. The present invention has the characteristics of simple structure, wide application range, strong practicality, durability and easy operation;

[0034] 3. The present invention solves practical problems for oil field production lines, greatly improves work efficiency and reduces labor intensity, improves the safety of production operations, can effectively prevent personal injuries caused by casing diameter operations, and ensure safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. In addition, the same reference symbols are used to represent the same components throughout the drawings. The drawings are only used to illustrate preferred embodiments and are not considered to be limitations of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Through the detailed description of the preferred embodiments, various other advantages and benefits will become clear to ordinary technicians in this field. Other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 - A schematic diagram of the main cross-sectional structure of the present invention;

[0037] Figure 2 - Schematic diagram of the axial side assembly structure of the front end cover 2, the front joint 3 and the tightening mechanism 4 of the present invention;

[0038] Figure 3 - Schematic diagram of the eccentric support 7-axis side structure of the present invention;

[0039] Figure 4 - Schematic diagram of the shaft side structure of the tensioning wheel 4-1 of the present invention;

[0040] Figure 5 - Schematic diagram of the axial structure of the support frame 5-3 of the present invention;

[0041] Figure 6 - A schematic diagram of the combined structure of the bearing seat 9, the drive gear train 10 and the coupling shaft 12 of the present invention;

[0042] Figure 7 - A schematic diagram of the shaft side structure of the drive gear train 10 of the present invention;

[0043] Figure 8 - A schematic diagram of the structure of the bearing seat 9, drive gear train 10, coupling shaft 12, motor 15 and bushing assembly of the present invention;

[0044] Figure 9 - A schematic diagram of the right side structure of the rear end cover 22 of the present invention;

[0045] Figure 10 -Block diagram of the circuit working principle of the present invention.

[0046] In the attached figure: 1. Seeker; 2. Front end cover; 3. Front connector, 3-1. Concave terminal; 4. Tightening mechanism, 4-0. Shaft I, 4-1. Tightening wheel, 4-2. Opening I; 5. Front straightening mechanism, 5-1. Shaft II, 5-2. Straightening wheel, 5-3. Support frame, 5-3-0. Base, 5-3-1. Opening II, 5-3-2 Shaft hole I; 6. Coil spring assembly; 7. Eccentric support, 7-1. Shaft hole II, 7-2. Convex terminal, 7-3. Eccentric end shaft; 8. Bearing; 9. Bearing seat; 10. Drive gear train, 10- 0. Center hole, 10-1. Flange, 10-2. Bracket, 10-3. Axle, 10-4. Wheel, 10-5. Through hole; 11. Partition; 12. Coupling; 13. Housing; 14. Front bushing, 14-1. Opening III; 15. Motor; 16. Rear bushing; 17. Support plate; 18. Power supply; 19. Control circuit board; 20. Rear straightening mechanism; 21. Rear connector; 22. Rear end cover; 23. Display; 24. Handle; 25. Charging port; 26. Switch, 27. Coil spring, 28. Micro switch. DETAILED DESCRIPTION

[0047] To further illustrate the technical means and effects employed by the present invention to achieve its intended objectives, the following detailed description of the specific implementations, structures, features, and effects of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0048] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B, specifically understood as: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may exist.

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] like Figure 1-9As shown, an eccentric spiral rolling oil pipe diameter gauge includes: a guide head 1, a front cover 2, a front joint 3, a tightening mechanism 4, a front straightening mechanism 5, a spiral spring assembly 6, an eccentric support 7, a bearing 8, a bearing seat 9, a drive gear train 10, a partition 11, a coupling 12, a housing 13, a front bushing 14, a motor 15, a rear bushing 16, a support plate 17, a power supply 18, a control circuit board 19, a rear straightening mechanism 20, a rear joint 21, a rear end cover 22, a display screen 23, a handle 24, a charging port 25, a switch 26, and a spiral spring 27. 7. Micro switch 28; characterized in that: the guide head 1 is threadedly connected to the front end cover 2, the front end cover 2 is plugged into the front end of the front connector 3 and the housing 13 and fixed by countersunk screws, a window is provided at the lower front end of the housing 13, the front end cover 2 is evenly distributed with three front straightening mechanisms 5 around the circumference, one of which is linked to the micro switch 28, a tightening mechanism 4 is provided at the center of the front end cover 2, the shaft Ⅰ4-0 of the tightening mechanism 4 is provided with a coil spring assembly 6, the spring of the coil spring assembly 6 is inserted into the opening Ⅰ4-2 of the shaft Ⅰ4-0, and the coil spring assembly Component 6 is supported by the left end shaft hole II7-1 of the eccentric support 7; the eccentric end shaft 7-3 at the right end of the eccentric support 7 is provided with a bearing 8, which is connected to the left end of the drive gear train 10 through the bearing seat 9, and the right end of the drive gear train 10 is connected to the motor 15 through the coupling 12. The drive gear train 10 is provided with two groups, and the wheels 10-4 of the drive gear train 10 are 45 degrees apart and connected by bolts through the flange 10-1 in the middle. A coil spring 27 is provided in the center hole 10-0, and the drive gear train 10 is provided at the window of the housing 13; the left end of the motor 15 is provided with a partition 11, The front bushing 14 and the right end of the motor 15 are provided with a rear bushing 16, and a support plate 17 is provided in the right part of the shell 13. The support plate 17 is provided with the motor 15, the power supply 18 and the control circuit board 19. The right end of the shell 13 is plugged into the rear joint 21 and the rear end cover 22 in sequence and fixed by countersunk screws. The rear joint 21 is evenly distributed around the circumference with three rear righting mechanisms 20 that are the same as the front righting mechanism 5. The end face of the rear end cover 22 is provided with a handle 24, a display screen 23 in the middle, and a charging port 25 and a power switch 26 on the upper part; the power adapter is used to charge the power supply 18.

[0051] It should be noted that the above-mentioned spiral spring assembly 6 provides spring force for the tightening mechanism 4, so that the tightening wheel 4-1 always tightens the front straightening mechanism 5; a coil spring 27 is provided in the center hole 10-0, which tightens the drive wheel system 10 by elastic force. The drive wheel system 10 is arranged at the window of the shell 13 to allow the wheel 10-4 to leak out; the motor 15 uses a DC24V, 1350R / min speed reduction motor of Meigaolian; the power supply 18 uses a 24V, 6000mah lithium battery; the power adapter voltage is AC220V-DC24V, the working current is 1.5A, and the shell 13 is made of aluminum alloy.

[0052] Specifically, the guide head 1 is a "bullet head" type hollow structure, and the right end is provided with an external thread that cooperates with the front end cover 2.

[0053] Specifically, the left end of the front connector 3 is provided with a cylindrical cavity for the tightening mechanism 4 , and the right end is provided with three female terminals 3 - 1 that are evenly distributed and cooperate with the eccentric support 7 .

[0054] Specifically, a three-petal "plum blossom"-shaped tightening wheel 4-1 is provided on the shaft I4-0 of the tightening mechanism 4, and an opening I4-2 is provided at the right end of the shaft I4-0.

[0055] Specifically, the support frame 5-3 of the front straightening mechanism 5 is a "U" structure, the bottom is an arc shape, and the upper part is provided with an axis hole I5-3-2.

[0056] Specifically, the eccentric support 7 is a cylinder, and three evenly distributed rectangular arc-shaped male terminals 7-2 that cooperate with the front connector 3 are provided at the left end.

[0057] Specifically, the driving wheel system 10 is provided with a flange 10-1 on each side, a cross-shaped center hole 10-0 in the center, and a square hollow structure in the middle. A parallelogram through hole 10-5 inclined 10 to 30 degrees to the center line is provided on the plane of the hollow structure. A parallelogram "U"-shaped bracket 10-2 is provided in the through hole. Bosses are provided on both sides of the lower part of the bracket 10-2. The width of the bosses is greater than the width of the through hole 10-5. The upper size of the bracket 10-2 is slightly smaller than the size of the through hole 10-5. The upper part of the bracket 10-2 is connected to the machine wheel 10-4 through the wheel axle 10-3.

[0058] Specifically, the front bushing 14 is an eccentric circular tube structure, and an opening III 14 - 1 is provided at the thinnest part.

[0059] like Figure 10 As shown, specifically, the positive pole of the power supply 18 is connected to the switch 26, the control circuit board 19, and the motor 15 in sequence through a wire. A micro switch 28 is provided between the control circuit board 19 and the motor 15. The charging port 25 is connected to the positive and negative poles of the power supply 18 through wires, and the negative pole of the power supply 18 is connected to the control circuit board 19 and the motor 15 through a wire.

[0060] It should be noted that after the switch 26 controls the main power supply to be closed, the power supply to the control circuit board 19 is turned on, and the motor 15 does not run. When the eccentric spiral rolling oil pipe diameter gauge is placed into the pipe, the front straightening mechanism 5 triggers the microswitch 28 to close, and the motor 15 is powered and operates, driving the drive gear train 10 to rotate forward, thereby completing the diameter adjustment operation of the pipe.

[0061] Specifically, the display screen 23 is connected to the control circuit board 19 via a wire, and the voltage and power level of the power supply 18 are displayed on the display screen 23 .

[0062] How to do it:

[0063] 1. Before operation, operators must wear labor protection equipment as required and conduct a comprehensive inspection of the eccentric spiral rolling oil pipe gauge to check whether the housing 13 is deformed or has any convex or concave marks. Turn on the power switch 26 and check on the display 23 whether the voltage and power of the power supply 18 meet the requirements.

[0064] 2. After the inspection is completed, one operator should stand at each of the pin and box ends of the oil pipe;

[0065] 3. The operator at the pin end stands to the side of the pipe. He holds the guide head 1 of the eccentric spiral rolling oil pipe gauge with his left hand and grasps the handle 24 with his right hand. He places the front end of the guide head 1 into the pipe to be passed. Immediately, the eccentric spiral rolling oil pipe gauge activates the drive motor via the front straightening mechanism 5, and the eccentric spiral rolling oil pipe gauge rapidly moves forward within the pipe.

[0066] 4. The eccentric spiral rolling oil pipe diameter gauge enters the pipe and automatically runs to the box end;

[0067] 5. An operator at the female buckle end stands on the side of the female buckle, extends his left and right hands, and assumes a ready position to catch the buckle;

[0068] 6. After the eccentric spiral rolling oil pipe is halfway out of the pipe, the drive motor is turned off by the front straightening mechanism 5, and the operation automatically stops. The operator takes over the box end;

[0069] 7. An operator at the box end stands to the side of the box end, holds the guide head 1 with his left hand, grabs the handle 24 with his right hand, and inserts the front end of the guide head 1 into the box end of the pipe fitting.

[0070] 8. The eccentric spiral rolling oil pipe diameter gauge automatically moves to the male end after entering the pipe;

[0071] 9. An operator at the pin end stands on one side of the pipe and catches the eccentric spiral rolling oil pipe diameter gauge with his hand;

[0072] 10. One operator on the male end and one operator on the female end follow the above steps to complete the pipe diameter adjustment in the order of the numbering.

[0073] 11. After the dredging operation is completed, turn off the power.

[0074] Although the preferred embodiments of the present invention have been described above, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the present invention.

[0075] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An eccentric spiral rolling oil pipe diameter gauge, comprising: Seeker (1), front end cover (2), front joint (3), tightening mechanism (4), front straightening mechanism (5), spiral spring assembly (6), eccentric support (7), bearing (8), bearing seat (9), drive gear train (10), partition (11), coupling (12), housing (13), front bushing (14), motor (15), rear bushing (16), support plate (17), power supply (18), control circuit board (19), rear straightening mechanism (20), rear joint (21), rear end cover (22), display screen (23), handle (24), charging port (25), switch (26), coil spring (27), micro switch (28), power adapter; characterized in that: the guide head (1) is threadedly connected to the front end cover (2), the front end cover (2) is plugged into the front end of the front connector (3) and the shell (13), and is fixed by countersunk screws, a window is provided at the lower front end of the shell (13), and three front straightening mechanisms (5) are evenly distributed around the front end cover (2), one of which is linked to the micro switch (28), and the front end The center of the cover (2) is provided with a tightening mechanism (4), and the shaft I (4-0) of the tightening mechanism (4) is provided with a spiral spring assembly (6), and the spring of the spiral spring assembly (6) is inserted into the opening I (4-2) of the shaft I (4-0), and the spiral spring assembly (6) is supported by the left end shaft hole II (7-1) of the eccentric support (7); the eccentric end shaft (7-3) at the right end of the eccentric support (7) is provided with a bearing (8), which is connected to the left end of the driving wheel train (10) through the bearing seat (9), and the right end of the driving wheel train (10) is connected to the left end of the driving wheel train (10) through the coupling (12). The motor (15) is connected, the drive wheel system (10) is set to two groups, the wheels (10-4) of the drive wheel system (10) are 45 degrees apart, and the eight wheels are arranged on the eight axles around the drive wheel system. The eight wheels are circumferentially distributed at 45 degrees, and the axles are 15-30 degrees away from the center line of the drive wheel system. The wheels slide laterally. When the wheels rotate around the fixed axles, the envelope of each wheel is a cylindrical surface, and the wheels can roll forward continuously. The middle is connected by bolts through the flange (10-1), and a coil spring (27) is arranged in the center hole (10-0). The driving wheel train (10) is arranged at the window of the housing (13); the left end of the motor (15) is provided with a partition (11) and a front bushing (14) in sequence, and the right end of the motor (15) is provided with a rear bushing (16). A support plate (17) is provided inside the right part of the housing (13), and the support plate (17) is provided with a motor (15), a power supply (18) and a control circuit board (19). The right end of the housing (13) is plugged into the rear joint (21) and the rear end cover (22) in sequence and fixed by countersunk screws. The rear joint (21) is evenly distributed with three rear straightening mechanisms (20) that are the same as the front straightening mechanism (5). The end surface of the rear end cover (22) is provided with a handle (24), a display screen (23) is provided in the middle, and a charging port (25) and a power switch (26) are provided on the top; the power adapter charges the power supply (18).

2. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The guide head (1) is a "bullet head" type hollow structure, and the right end is provided with an external thread that cooperates with the front end cover (2).

3. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The left end of the front joint (3) is provided with a cylindrical cavity for the tightening mechanism (4), and the right end is provided with three concave terminals (3-1) that are evenly distributed and cooperate with the eccentric support (7).

4. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: A three-petal "plum blossom" shaped tightening wheel (4-1) is provided on the shaft I (4-0) of the tightening mechanism (4), and an opening I (4-2) is provided at the right end of the shaft I (4-0).

5. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The support frame (5-3) of the front straightening mechanism (5) is a "U" structure, with an arc-shaped bottom and an axis hole I (5-3-2) provided on the top.

6. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The eccentric support (7) is a cylinder, and three evenly distributed rectangular arc-shaped convex terminals (7-2) that cooperate with the front joint (3) are provided at the left end.

7. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The driving wheel train (10) is provided with a flange (10-1) on each side, a cross-shaped center hole (10-0) in the center, and a square hollow structure in the middle. A parallelogram through hole (10-5) inclined 10 to 30 degrees to the center line is provided on each plane of the hollow structure. A parallelogram "U"-shaped bracket (10-2) is provided in the through hole. Bosses are provided on both sides of the lower part of the bracket (10-2). The width of the bosses is greater than the width of the through hole (10-5). The upper part of the bracket (10-2) is slightly smaller than the size of the through hole (10-5). The upper part of the bracket (10-2) is connected to the machine wheel (10-4) via the wheel axle (10-3).

8. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The front bushing (14) is an eccentric circular tube structure, and an opening III (14-1) is provided at the thinnest part.

9. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The positive electrode of the power supply (18) is connected to the switch (26), the control circuit board (19), and the motor (15) in sequence through a wire. A micro switch (28) is provided between the control circuit board (19) and the motor (15). The charging port (25) is connected to the positive electrode and the negative electrode of the power supply (18) through a wire, respectively. The negative electrode of the power supply (18) is connected to the control circuit board (19) and the motor (15) through a wire.

10. The eccentric spiral rolling oil pipe diameter gauge according to claim 1, characterized in that: The display screen (23) is connected to the control circuit board (19) via a wire.

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