Driving mechanism of aligning device in pipeline

Abstract

The utility model belongs to the technical field of pipeline internal clamp driving, particularly relates to a driving mechanism of a pipeline internal clamp, and aims to solve the problem of gradeability of the pipeline internal clamp. The device comprises three driving assemblies which are connected with a rack of the internal aligning device, the three driving assemblies are arranged in the circumferential direction of the inner aligning device at equal intervals in the circumferential direction of the inner aligning device. The driving assembly comprises a driving supporting frame connected with the inner aligning device rack, a driving wheel installed on the driving supporting frame and making contact with the inner wall of the pipeline, and a driving motor driving the driving wheel to rotate. The climbing capacity of mountain construction can be smaller than or equal to 35 degrees, and the slipping phenomenon does not occur in the climbing process; in the downhill process, when the gradient exceeds a set value, the walking speed is automatically reduced, and the operation safety of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of driving a pipe inner-mouth device, and in particular relates to a driving mechanism of a pipe inner-mouth device. Background Art

[0002] Steel pipe welding is a crucial step in pipeline construction, directly impacting pipeline quality, operational safety, and economic efficiency after completion. Steel pipe welding requires the use of internal pipe alignment tools to ensure proper alignment and positioning of the two welded pipes. With the increasing development of automated welding and high-efficiency welding technologies, welding processes are placing higher demands on the alignment quality of internal pipe alignment tools. Not only must the roundness of the two pipe ends be consistent, accurately and correctly aligned, but the gap must also be uniform.

[0003] Due to the unique terrain of mountainous construction sites, pipe internal joints require strong climbing and cornering capabilities. The required climbing capability is at least 30°, and the cornering radius must reach six times the pipe diameter. However, current drive mechanisms for pipe internal joints have limitations, primarily due to insufficient driving force, insufficient positive driving pressure, and a lack of differential speed capability for the drive wheels. Therefore, there is an urgent need to address these climbing and cornering issues. Utility Model Content

[0004] In order to solve the above-mentioned problem in the prior art, namely, the problem of improving the climbing ability of the in-pipe joint device, the utility model provides a driving mechanism for the in-pipe joint device.

[0005] This application discloses a driving mechanism for a pipe jointer, which adopts the following technical solutions:

[0006] A driving mechanism for an internal pipe joint device includes three driving assemblies connected to a frame of the internal pipe joint device; the three driving assemblies are arranged in a circumferential direction of the internal pipe joint device and are arranged at equal intervals along the circumferential direction of the internal pipe joint device;

[0007] The driving assembly includes a driving support frame connected to the inner mouth frame, a driving wheel mounted on the driving support frame and in contact with the inner wall of the pipe, and a driving motor for driving the driving wheel to rotate;

[0008] The three drive assemblies are divided into a top drive assembly arranged at the top and two bottom drive assemblies. The top drive assembly contacts the top of the inner wall of the pipe after being connected to the inner joint. The bottom drive assembly contacts the inner wall of the pipe after being connected to the inner joint and is arranged on the lower side of the top drive assembly.

[0009] By adopting the above technical solution, during construction, it is ensured that the three drive components are effectively close to the inner wall of the pipe, and under the drive of the three drive motors, it is ensured that the internal joint device has the ability to climb a 35° slope.

[0010] Preferably, one end of the driving support frame on the bottom driving assembly is hinged to the frame of the inner jointer, and the other end is hinged with an adjusting screw, one end of the adjusting screw is connected to the driving support frame, and the other end is threadedly connected to the frame of the inner jointer.

[0011] By adopting the above technical solution, the height of one end of the driving support frame on the bottom driving assembly is adjusted by rotating the adjusting screw, thereby adjusting the arrangement height of the driving wheel on the driving support frame on the bottom driving assembly.

[0012] Preferably, one end of the driving support frame on the top driving assembly is hinged to the frame of the inner joint device, and the other end is connected to a driving screw; the lower end of the driving screw is connected to an electric cylinder, the upper end of the electric cylinder is connected to the lower end of the driving screw, and the lower end is connected to the frame of the inner joint device. After the output shaft of the electric cylinder pops out, the driving support frame on the top driving assembly is pushed through the energy storage assembly.

[0013] By adopting the above technical solution, during construction, one end of the top drive assembly is hinged to the frame of the internal jointer, and the other end is hinged to the drive screw, and is connected to the internal threaded hole of the pressure sensor through the drive screw. The lower cover is connected to the output thread of the electric cylinder, and the bottom of the electric cylinder is hinged to the frame of the internal jointer. When the internal jointer moves in the pipe, the action force of the electric cylinder and the reaction force of the inner wall of the pipe will effectively ensure that the three drive assemblies are effectively close to the inner wall of the pipe.

[0014] Preferably, a pressure sensor is sleeved on the driving screw, and the driving screw is connected to the internal threaded hole of the pressure sensor; the pressure sensor is connected to the electric cylinder.

[0015] By adopting the above technical solution, the pressure sensor sets the upper and lower limits of the pressure value. When the pressure reaches the upper limit, the electric cylinder stops extending and brakes to maintain the output force.

[0016] Preferably, an energy storage component is installed between the driving screw and the electric cylinder;

[0017] The energy storage assembly includes an upper cover, a lower cover, and springs evenly arranged between the upper cover and the lower cover.

[0018] By adopting the above technical solution, since the electric cylinder may start and stop frequently due to differences in pipe wall thickness or the influence of ovality, an energy storage component is added to store energy to a certain extent, so that when the pressure value fluctuates to a certain extent, it can not only ensure effective positive pressure but also avoid frequent starting and stopping of the electric cylinder.

[0019] Preferably, a reducer is installed between the driving wheel and the driving motor.

[0020] Preferably, the exterior of the driving wheel is made of polyurethane material.

[0021] Preferably, the drive motor is a servo motor.

[0022] Preferably, the electric cylinder is a servo electric cylinder.

[0023] Beneficial effects of the utility model:

[0024] (1) The climbing ability of mountain construction can reach ≤35°, and there will be no slipping during the climbing process; during the downhill process, the walking speed will be automatically reduced when the slope exceeds the set value, thereby improving the operating safety of the equipment.

[0025] (2) Better cornering ability is achieved through differential control, the cornering radius can reach 5 times the diameter of the steel pipe, and it can smoothly pass through the variable wall thickness pipe mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 Schematic diagram of the driving mechanism of the in-pipe adapter in this embodiment;

[0028] Figure 2 is a schematic diagram of the drive assembly in this embodiment;

[0029] Figure 3 Schematic diagram of the connection between the top drive assembly and the electric cylinder in this embodiment;

[0030] Figure 4 Schematic diagram of the energy storage component in this embodiment.

[0031] Explanation of the accompanying drawings: 1. Drive assembly; 101. Top drive assembly; 102. Bottom drive assembly; 11. Drive support frame; 12. Drive motor; 13. Reducer; 14. Drive wheel; 2. Drive screw; 3. Energy storage assembly; 31. Upper cover; 32. Lower cover; 33. Spring; 4. Pressure sensor; 5. Electric cylinder. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only portions relevant to the relevant utility model are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] The utility model provides a driving mechanism of a pipe inner-mouth device, referring to Figure 1 The driving mechanism of the pipe inner joint device includes three driving components 1, which are connected to the frame of the inner joint device. The three driving components 1 are arranged around the inner joint device at equal intervals along the circumference of the inner joint device, and are arranged in a herringbone shape as a whole.

[0035] The three drive assemblies 1 are divided into a top drive assembly 101 arranged at the top and two bottom drive assemblies 102. The top drive assembly 101 contacts the top of the inner wall of the pipe after being connected to the inner joint, and the bottom drive assembly 102 contacts the inner wall of the pipe after being connected to the inner joint and is arranged on the lower side of the top drive assembly 101.

[0036] Reference Figure 2 The drive assembly 1 includes a drive support frame 11, on which a drive motor 12 is mounted. The drive motor 12 is a servo motor for easy control. A reducer 13 and a drive wheel 14 are mounted on the drive support frame 11. The drive motor 12 is connected to the input end of the reducer 13 by bolts, and the output end of the reducer 13 is connected to the drive wheel 14 by bolts. The reducer 13 is fixedly connected to the drive support frame 11 by bolts. The drive support frame 11 is connected to the frame of the inner jointer, and when the drive motor 12 is started, the power of the drive motor 12 is transmitted to the reducer 13, which drives the drive wheel 14 to rotate via the reducer 13. The drive wheel 14 contacts the inner wall of the pipe, so that the drive wheel 14 has greater power to drive the inner wall of the pipe to climb the slope under the drive of the reducer 13. A PLC control module is set on the drive motor 12, and a PIC integrated control is used to control the operation of the drive motor 12. It can realize automatic switching between high and low speeds of the drive motor 12. During the uphill and downhill process, the speed of the drive motor 12 is automatically adjusted when the slope exceeds the set value, thereby improving the operational safety of the equipment. The three driving components 1 arranged in a herringbone shape are all driven and controlled individually. When passing through a bend, the differential speed control can be used to pass through a bend with a radius of 6 times the pipe diameter. The exterior of the driving wheel 14 is made of polyurethane material.

[0037] Reference Figure 2 、 Figure 3 , through holes are provided at both ends of the driving support frame 11.

[0038] One end of the driving support frame 11 on the bottom driving assembly 102 is hinged to the frame of the inner jointer, and the other end is hinged to an adjusting screw. One end of the adjusting screw is connected to the driving support frame 11, and the other end is threadedly connected to the frame of the inner jointer. By rotating the adjusting screw, the height of one end of the driving support frame 11 on the bottom driving assembly 102 is adjusted, thereby adjusting the arrangement height of the driving wheel 14 on the driving support frame 11 on the bottom driving assembly 102.

[0039] One end of the driving support frame 11 on the top driving assembly 101 is hinged to the frame of the inner jointer, and the other end is connected to the driving screw 2. One end of the driving screw 2 is connected to one end of the driving support frame 11 on the top driving assembly 101, and the other end is connected to the energy storage assembly 3.

[0040] Reference Figure 3 、 Figure 4 The energy storage assembly 3 includes an upper cover 31, a lower cover 32, and springs 33 evenly spaced between the upper and lower covers 31 and 32. A pressure sensor 4 is bolted to the upper side of the upper cover 31. A drive screw 2 passes through the upper and lower covers 31 and 32 and is threadedly connected to the lower cover 32. Rotating the drive screw 2 adjusts the distance between the upper and lower covers 31 and 32, thereby adjusting the preload force of the spring 33. The drive screw 2 is connected to the internal threaded hole of the pressure sensor 4, and the base of the pressure sensor 4 is bolted to the upper cover 31. The pressure sensor 4 is connected to the electric cylinder 5.

[0041] An electric cylinder 5 is mounted beneath the lower cover 32. Its upper end is connected to the lower cover 32, and its lower end is connected to the frame of the internal alignment device. After the output shaft of the electric cylinder 5 is ejected, the energy storage assembly 3 pushes the drive support frame 11 on the top drive assembly 101, adjusting the height of the top drive assembly 101 so that it contacts the top of the pipe inner wall. A servo electric cylinder is used for the electric cylinder 5.

[0042] During construction, one end of the top drive assembly 101 is hinged to the frame of the inner jointer, and the other end is hinged to the drive screw 2, and is connected to the internal threaded hole of the pressure sensor 4 through the drive screw 2. The base of the pressure sensor 4 is connected to the upper cover 31 through bolts, and the lower cover 32 is connected to the output thread of the electric cylinder 5. The bottom of the electric cylinder 5 is hinged to the frame of the inner jointer. When the inner jointer moves in the pipe, due to the action force of the electric cylinder 5 and the reaction force of the inner wall of the pipe, it will effectively ensure that the three drive assemblies 1 are effectively close to the inner wall of the pipe. Under the drive of the three drive motors 12, it is ensured that the inner jointer has the ability to climb a 35° slope.

[0043] The servo motor is equipped with a brake device, which can effectively brake the driving wheel 14, so that the inner mouth device can be effectively braked at any position, and the response time is extremely short, and there will be no slipping phenomenon.

[0044] The electric cylinder 5 is equipped with a brake device, which performs effective braking when the thrust reaches the set value to ensure the positive pressure required for driving.

[0045] Pressure sensor 4 sets upper and lower pressure limits. When the pressure reaches the upper limit, electric cylinder 5 stops extending and applies the brake to maintain output force. When the pressure drops below the lower limit, electric cylinder 5 starts extending and releases the brake, continuing until the pressure reaches the upper limit, where it stops extending and applies the brake. Because variations in pipe wall thickness or ovality can cause the electric cylinder 5 to start and stop frequently, energy storage component 3 is added to store a certain amount of energy. This ensures effective positive pressure when pressure fluctuates within a certain range while preventing frequent starting and stopping of the electric cylinder 5.

[0046] The PIC integrated control system drives the motor 12, enabling automatic high- and low-speed switching. During uphill and downhill slopes, the servo motor speed is automatically adjusted when the slope exceeds a set value, improving operational safety. The three drive assemblies 1, arranged in a triangular pattern, are individually controlled. When negotiating curves, differential speed control enables the machine to navigate bends with a radius of 1 / 100 times the pipe diameter.

[0047] The term "comprise" or any other similar term is 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 inherent to such process, method, article, or apparatus.

[0048] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A driving mechanism for a pipe joint, characterized by: The invention comprises three drive assemblies (1) connected to the frame of the inner aligner; the three drive assemblies (1) are arranged in the circumference of the inner aligner and are arranged at equal intervals along the circumference of the inner aligner; The driving assembly (1) comprises a driving support frame (11) connected to the inner mouthpiece frame, a driving wheel (14) mounted on the driving support frame (11) and in contact with the inner wall of the pipe, and a driving motor (12) for driving the driving wheel (14) to rotate; The three drive assemblies (1) are divided into a top drive assembly (101) arranged at the top and two bottom drive assemblies (102). The top drive assembly (101) contacts the top of the inner wall of the pipeline after being connected to the inner joint. The bottom drive assembly (102) contacts the inner wall of the pipeline after being connected to the inner joint and is arranged on the lower side of the top drive assembly (101).

2. The driving mechanism of the in-pipe joint according to claim 1, characterized in that: One end of the driving support frame (11) on the bottom driving assembly (102) is hinged to the frame of the inner aligner, and the other end is hinged to an adjusting screw, one end of the adjusting screw is connected to the driving support frame (11), and the other end is threadedly connected to the frame of the inner aligner.

3. The driving mechanism of the in-pipe joint device according to claim 1, characterized in that: One end of the driving support frame (11) on the top driving assembly (101) is hinged to the frame of the inner jointer, and the other end is connected to the driving screw (2); the lower end of the driving screw (2) is connected to the electric cylinder (5), the upper end of the electric cylinder (5) is connected to the lower end of the driving screw (2), and the lower end is connected to the frame of the inner jointer. After the output shaft of the electric cylinder (5) pops out, the driving support frame (11) on the top driving assembly (101) is pushed through the energy storage assembly (3).

4. The driving mechanism of the in-pipe joint according to claim 3, characterized in that: A pressure sensor (4) is sleeved on the driving screw (2), and the driving screw (2) is connected to the internal threaded hole of the pressure sensor (4); the pressure sensor (4) is connected to the electric cylinder (5).

5. The driving mechanism of the in-pipe joint according to claim 4, characterized in that: An energy storage component (3) is installed between the driving screw (2) and the electric cylinder (5); The energy storage assembly (3) comprises an upper cover (31), a lower cover (32), and springs (33) evenly arranged between the upper cover (31) and the lower cover (32).

6. The driving mechanism of the in-pipe joint according to claim 1, characterized in that: A speed reducer (13) is installed between the driving wheel (14) and the driving motor (12).

7. The driving mechanism of the in-pipe joint device according to claim 1, characterized in that: The exterior of the driving wheel (14) is made of polyurethane material.

8. The driving mechanism of the in-pipe joint device according to claim 1, characterized in that: The driving motor (12) is a servo motor.

9. The driving mechanism of the in-pipe joint device according to claim 3, characterized in that: The electric cylinder (5) is a servo electric cylinder.

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