Shell section assembling device and assembling method

Abstract

The invention relates to a shell ring assembly device which is mainly used for solving the problems that an existing shell ring assembly device is not suitable for square and round shell rings, the shell rings are prone to deformation by adopting a hydraulic clamping mechanism, and the local unfitness of butt joint is not easy to adjust; or a vertical assembling device is low in efficiency, poor in safety and easy to cause damage to the shell ring. The invention relates to a shell ring assembling device which comprises a working platform, two roller carriers arranged on the working platform and an alignment tolerance adjusting mechanism arranged between the two roller carriers. The alignment tolerance adjusting mechanism comprises a moving structure, an adjusting structure and a measuring piece, the adjusting structure is installed on the moving structure, the moving structure drives the adjusting structure to be close to or away from the shell ring, the measuring piece is used for measuring alignment tolerance data in real time, the adjusting structure is tightly attached to the shell ring and rotates to extrude the outer wall of the shell ring, and the alignment tolerance of the two shell rings is adjusted section by section. And the assembly quality is effectively ensured. The invention further provides a shell ring assembling method.

Description

Technical Field

[0001] The invention relates to cylinder segment assembly, and in particular to a cylinder segment assembly device and an assembly method. Background Art

[0002] The cylinder is the main component of the tank container, usually a hollow cylindrical or square round structure. Its main function is to provide a closed space for containing the medium. Due to the limitation of the size of the manufacturing steel plate, some large container cylinders are assembled and spliced ​​with multiple cylinder sections to achieve the required cylinder size.

[0003] The assembly and splicing equipment used when assembling the cylinder body needs to ensure that the center points and sides of the two cylinder segments are in the same horizontal plane. In the prior art, the assembly and splicing equipment can center and clamp the cylinder segment by driving the centering component, such as Figure 1 As shown. The moving table 02, X-axis moving component 03, support component 04, centering component 05 and welding cover 06 are symmetrically arranged at the left and right ends of the workbench 01. The two cylinder sections that need to be paired fall on the two support components 04 respectively, and are inserted into the centering component 05. The misalignment between the two cylinder sections is adjusted by driving the centering component 05 to ensure that the two center points and the sides are in the horizontal plane, and then the support component 04 is driven to rotate, so that the two cylinder sections rotate, and under the action of the welding head, the welding work of the cylinder sections is realized. The X-axis moving component 03 drives the centering component 05 to move along the moving table 02, and a welding cover 06 is also arranged on the centering component 05. However, the equipment has the following disadvantages: 1. It has poor versatility and cannot realize the pairing of square and round cylinder segments; and when pairing round cylinder segments, the diameter range it can meet is limited; 2. The clamping mechanism is usually hydraulic clamping, which is easy to cause deformation for cylinder segments and heads with thin wall thickness; the clamping mechanism clamps the cylinder segments in the circumferential direction at the same time, and it is not easy to adjust the local misalignment; 3. The equipment has a complex structure, high maintenance cost and high failure rate.

[0004] In the prior art, a vertical assembly device is also used, where the first cylinder segment is placed vertically on the assembly platform, and the second cylinder segment is lifted vertically and dropped on the first cylinder segment. The misalignment between the cylinder segments is adjusted by tools such as a crowbar. However, the disadvantages are: 1. The process of flipping the cylinder segment and the cylinder body is added, which is inefficient and has poor safety; 2. It is not applicable to cylinder segments with a long length; 3. Using tools such as a crowbar to adjust the misalignment is likely to cause damage to the cylinder segment. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problems that the existing cylinder segment assembling device is not suitable for square and round cylinder segments, the hydraulic clamping mechanism is easy to cause the cylinder segment to deform, and it is difficult to adjust the local misalignment; or the vertical assembling device is low in efficiency, poor in safety, and easy to cause cylinder segment damage, and proposes a cylinder segment assembling device and an assembling method.

[0006] To solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0007] A cylinder segment assembly device, which is special in that it comprises a working platform, two roller frames and a misalignment adjustment mechanism;

[0008] The two roller frames are fixed on the working platform and arranged side by side, respectively used to carry two cylinder sections to be assembled, so that the central axis surfaces of the two cylinder sections to be assembled are located on the same plane, and drive the cylinder sections to rotate;

[0009] The misalignment adjustment mechanism comprises a base, a moving structure, an adjustment structure and two measuring parts;

[0010] The base is fixed on the working platform and is located in the middle of one end of the two roller frames; the moving structure is arranged above the base, and the moving direction of the moving end thereof is perpendicular to the central axis plane of the cylinder section;

[0011] The adjustment structure includes two fixed plates, a cam, and a motor; the two fixed plates are vertically arranged on the moving end of the moving structure and are arranged parallel to the moving direction of the moving end;

[0012] The cam is installed between two fixed plates; the cross section of the cam is a variable diameter curve; the cam is provided with a 0 position and a maximum rotation angle, and the diameter of the cam gradually increases during the process of rotating from the 0 position to the maximum rotation angle;

[0013] The motor is arranged on the outside of a fixed plate, and its driving end is connected to the cam to drive the cam to rotate;

[0014] The two measuring pieces are respectively mounted on the upper ends of the two fixing plates, and their measuring ends respectively correspond to the outer walls of the two barrel segments to be assembled, and are used to measure the distance between them and the outer walls of the two barrel segments in real time.

[0015] Furthermore, the mobile structure includes a guide rail frame, a lead screw, a slider, and a hand wheel;

[0016] The guide rail frame is installed on the base, and the lead screw is installed in the middle of the guide rail frame and is parallel to the guide rail frame; the lead screw is perpendicular to the barrel section;

[0017] The hand wheel is connected to the end of the lead screw away from the barrel section, the slider is sleeved on the lead screw, and both sides of the slider are connected to the guide rail frame;

[0018] The slider is the moving end of the moving structure, and the two fixing plates are vertically arranged on the slider.

[0019] Furthermore, each of the roller frames comprises a base plate and two rollers; the two rollers are both cylindrical and are respectively located at two ends of the base plate; and a roller motor is arranged in each roller to drive the cylinder section to rotate.

[0020] Furthermore, both of the two measuring components adopt laser rangefinders.

[0021] Furthermore, an angular displacement sensor is integrated on the motor to measure the rotation angle of the cam.

[0022] At the same time, the present invention also provides a cylinder segment assembly method, which is based on the above-mentioned cylinder segment assembly device, and its special feature is that it includes the following steps:

[0023] S1, placing the two cylinder sections to be assembled on two roller racks respectively, so that the central axis surfaces of the two cylinder sections to be assembled are located on the same plane;

[0024] S2. The measuring ends of the two measuring pieces correspond to the outer walls of the assembly ends of the two barrel segments to be assembled, and the cam is located at position 0; the cam is driven to move toward the barrel segment through the moving structure until the cam is in close contact with the outer wall of one of the barrel segments;

[0025] S3. Two measuring pieces measure the distance between them and the two cylinder sections respectively, and the readings are d1 and d2. The difference between d1 and d2 is the misalignment amount. The allowable value of the misalignment amount is L.

[0026] If |d1-d2|≤L, the misalignment is within the allowable range, then proceed to step S6;

[0027] If |d1-d2|>L, the misalignment amount is not within the allowable range, then proceed to step S4 to adjust the misalignment amount;

[0028] S4, the motor drives the cam to start rotating from position 0 in the direction of increasing diameter, and the roller frame drives the cylinder section to rotate in the opposite direction to the cam;

[0029] S5, during the rotation process, the cam gradually squeezes the outer wall of the cylinder segment, so that the misalignment between the two cylinder segments is reduced, and then the cam and the cylinder segment stop rotating, and the process returns to step S3;

[0030] S6. Spot welding the two cylinder sections;

[0031] S7, rotating the cylinder section to the next spot-fixing position, repeating steps S3 to S6, until all spot-fixing welding is completed, thus realizing the assembly of the cylinder section.

[0032] Further, if |d1-d2|>L, but the cam has reached the maximum rotation angle, the handwheel is used to drive the slider to slide on the guide frame, driving the cam to move away from the barrel segment, so that the cam is separated from the outer wall of the barrel segment; then, the cam is rotated back to the 0 position, and the handwheel is used to drive the slider to slide on the guide frame, driving the cam to move toward the barrel segment, so that the cam is again in close contact with the outer wall of the barrel segment, and then step S4 is performed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. A cylinder segment assembly device of the present invention comprises a working platform, two roller frames arranged on the working platform, and a misalignment adjustment mechanism arranged between the two roller frames. The misalignment adjustment mechanism comprises a moving structure, an adjusting structure and a measuring piece, wherein the adjusting structure is installed on the moving structure, and the moving end of the moving structure drives the adjusting structure to move in a direction perpendicular to the cylinder segment, so that the adjusting structure approaches or moves away from the cylinder segment, and the measuring piece is used to measure the misalignment data in real time, and the adjusting structure is pressed against the cylinder segment and rotates to squeeze the outer wall of the cylinder segment, so as to adjust the misalignment of the two cylinder segments section by section, thereby effectively ensuring the assembly quality.

[0035] 2. The present invention provides a cylinder segment assembly device, wherein the roller frame comprises a base plate and rollers arranged at both ends of the base plate. The roller frame is suitable for the assembly of square, round or circular cylinder segments and can achieve cylinder segment assembly efficiently and quickly. The device of the present invention has the characteristics of strong versatility, simple structure and easy operation.

[0036] 3. The present invention provides a barrel segment assembly device, the adjustment structure includes two fixed plates, a cam and a motor, the cam is arranged between the two fixed plates, and the motor drives the cam to rotate. The cross section of the cam is a variable diameter curve. After the cam is close to the outer wall of the barrel segment, it rotates in the direction of gradually increasing diameter, thereby squeezing the outer wall of the barrel segment to achieve the purpose of adjusting the misalignment. For barrel segments with thin wall thickness, the technical problem of deformation of the barrel segment is solved by using a rotary extrusion method.

[0037] 4. A barrel segment assembly method of the present invention measures the misalignment of two barrel segments in real time through a measuring piece. After the cam and the outer wall of the barrel segment are in close contact, the cam is controlled to rotate in the direction of increasing diameter, and the barrel segment rotates in the opposite direction, so that the cam squeezes the outer wall of the barrel segment to achieve the purpose of reducing the misalignment. When the misalignment reaches the allowable range, the cam and the barrel segment stop rotating, and the two barrel segments are spot welded. This process is repeated until the periphery of the two barrel segments is spot welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an existing pair splicing device using a drive centering component;

[0039] Figure 1 Description of reference numerals in the figures:

[0040] 01. Workbench; 02. Moving table; 03. X-axis moving assembly; 04. Support assembly; 05. Centering assembly; 06. Welding cover;

[0041] Figure 2 It is a schematic diagram of the structure of a cylinder segment assembly device in use state according to an embodiment of the present invention;

[0042] Figure 3 It is a structural schematic diagram of an embodiment of a cylinder segment assembly device of the present invention;

[0043] Figure 4 It is a structural schematic diagram of a misalignment adjustment mechanism in an embodiment of a cylinder segment assembly device of the present invention;

[0044] Figure 5 It is a schematic diagram of the position adjustment of the cylinder segments in an embodiment of the cylinder segment assembly method of the present invention.

[0045] Figure 2-Figure 5 Description of reference numerals in the figures:

[0046] 1. Working platform; 2. Roller frame; 21. Bottom plate; 22. Roller; 3. Misalignment adjustment mechanism; 31. Base; 32. Guide frame; 33. Lead screw; 34. Slider; 35. Hand wheel; 36. Fixed plate; 37. Cam; 38. Motor; 39. Measuring piece; 4. Cylinder section. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] The present invention provides a cylinder segment assembly device, such as Figure 2 As shown, it includes a working platform 1, two roller frames 2 and a misalignment adjustment mechanism 3 arranged between the two roller frames 2.

[0049] like Figure 3 As shown, the roller frame 2 and the misalignment adjustment mechanism 3 are both fixedly mounted on the working platform 1, and the working platform 1 is used to ensure that the roller frame 2 and the misalignment adjustment mechanism 3 are located on the same horizontal reference.

[0050] Two roller frames 2 are arranged on the working platform 1, and the two roller frames 2 are arranged side by side and aligned, respectively used to carry two cylinder sections 4 to be assembled, so that the central axis surfaces of the two cylinder sections 4 to be assembled are located on the same plane. The roller frame 2 includes a bottom plate 21 and two rollers 22. The two rollers 22 are both cylindrical and are respectively located at the two ends of the bottom plate 21. A roller motor is arranged in each roller 22 to drive the cylinder section 4 to rotate.

[0051] like Figure 4As shown, the misalignment adjustment mechanism 3 includes a base 31, a moving structure, an adjustment structure and two measuring pieces 39. The base 31 is fixed on the working platform 1 and is located between the rollers 22 at one end of the two roller frames 2. The moving structure is arranged above the base 31, and the adjustment structure is installed on the moving structure. The moving end of the moving structure drives the adjustment structure to move in a direction perpendicular to the barrel section 4, so that the adjustment structure is close to or away from the barrel section 4. The measuring piece 39 is installed above the adjustment structure.

[0052] The moving structure includes a guide frame 32, a lead screw 33, a slider 34, and a hand wheel 35; the guide frame 32 is mounted on the base 31, the lead screw 33 is mounted in the middle of the guide frame 32 and is parallel to the guide frame 32; the hand wheel 35 is mounted on the end of the lead screw 33 away from the barrel section 4, the slider 34 is mounted on the lead screw 33, and both sides of the slider 34 are connected to the guide frame 32. The slider 34 is driven to move forward and backward along the lead screw 33 by the hand wheel 35. The lead screw 33 is perpendicular to the barrel section 4.

[0053] The adjustment structure includes two fixed plates 36, a cam 37, and a motor 38. The two fixed plates 36 are vertically arranged on the slider 34 and are arranged parallel to the moving direction of the slider 34; the cam 37 is installed between the two fixed plates 36, and the cross section of the cam 37 is a variable diameter curve. The motor 38 is arranged on the outside of a fixed plate 36, and its driving end is connected to the cam 37 to drive the cam 37 to rotate. The motor 38 is also integrated with an angular displacement sensor for measuring the rotation angle of the cam 37.

[0054] The cam 37 is provided with a 0 position and a maximum rotation angle. The diameter of the cam 37 gradually increases during the process of rotating from the 0 position to the maximum rotation angle, thereby gradually pressing the barrel section 4 to achieve the purpose of adjusting the misalignment amount.

[0055] The two measuring pieces 39 are laser rangefinders, which are respectively aligned and mounted on the upper ends of the two fixing plates 36. The measuring ends of the two measuring pieces 39 are parallel to each other. The measuring ends of the measuring pieces 39 correspond to the outer walls of the two barrel segments 4 to be assembled, respectively, and are used to measure the distance between them and the outer walls of the two barrel segments 4 in real time. The readings of the measuring pieces 39 are d1 and d2 respectively.

[0056] The present invention also provides a cylinder segment assembly method, which specifically comprises the following steps:

[0057] S1, placing two cylinder segments 4 to be assembled on two roller frames 2 respectively, so that the central axis surfaces of the two cylinder segments 4 to be assembled are located on the same plane;

[0058] S2, such as Figure 5As shown, the misalignment adjustment mechanism 3 is located at the connection of the two cylinder segments 4, the measuring ends of the two measuring pieces 39 correspond to the outer walls of the two cylinder segments 4 to be assembled, and the cam 37 is located at the 0 position; the hand wheel 35 drives the slider 34 to move toward the cylinder segment 4 on the guide rail frame 32 until the cam 37 is close to the outer wall of one of the cylinder segments 4;

[0059] S3, two laser rangefinders measure the distances between the two barrel sections 4 respectively, and the readings are d1 and d2. The difference between d1 and d2 is the misalignment amount. The allowable value of the misalignment amount is L.

[0060] If |d1-d2|≤L, the misalignment amount reaches the allowable range, and step S6 is performed to weld the two cylinder sections 4 together;

[0061] If |d1-d2|>L, the misalignment amount is not within the allowable range, and step S4 is performed to adjust the misalignment amount;

[0062] If |d1-d2|>L, and the angular velocity sensor recognizes that the cam 37 has reached the maximum rotation angle, the handwheel 35 drives the slider 34 to slide on the guide frame 32, driving the cam 37 to move away from the barrel segment 4, so that the cam 37 is separated from the outer wall of the barrel segment 4; then, the cam 37 is rotated to the 0 position, and the handwheel 35 drives the slider 34 to slide on the guide frame 32, driving the cam 37 to move towards the barrel segment 4, so that the cam 37 is again in close contact with the outer wall of the barrel segment 4, and then step S4 is performed.

[0063] S4, the motor 38 drives the cam 37 to start rotating from the 0 position in the direction of increasing diameter, so that the roller 22 on the roller frame 2 drives the barrel section 4 to rotate in the opposite direction to the cam 37 under the drive of the roller motor;

[0064] S5, during the rotation process, the cam 37 gradually squeezes the outer wall of the cylinder segment 4, so that the misalignment between the two cylinder segments 4 is reduced, and then the cam 37 and the cylinder segment 4 stop rotating, and return to step S3:

[0065] S6, spot welding the two cylinder sections 4;

[0066] S7, rotating the cylinder segment 4 to the next spot-fixing position, repeating steps S3 to S6, until all spot-fixing welding is completed, thereby achieving the assembly of the cylinder segment 4.

[0067] The present invention can efficiently and quickly realize the assembly of square, round and circular shapes of various sizes. The device of the present invention has strong versatility, simple structure and convenient operation and use. The misalignment adjustment mechanism 3 can adjust the misalignment amount section by section and measure the misalignment amount data in real time, effectively ensuring the assembly quality.

Claims

1. A cylinder segment assembly device, characterized in that: It comprises a working platform (1), two roller frames (2) and a misalignment adjustment mechanism (3); The two roller frames (2) are fixed on the working platform (1), and the two roller frames (2) are arranged side by side, respectively used to carry two cylinder segments (4) to be assembled, so that the central axis surfaces of the two cylinder segments (4) to be assembled are located on the same plane, and drive the cylinder segments (4) to rotate; The misalignment adjustment mechanism (3) comprises a base (31), a moving structure, an adjustment structure and two measuring members (39); The base (31) is fixed on the working platform (1) and is located in the middle of one end of the two roller frames (2); the moving structure is arranged above the base (31), and the moving direction of the moving end thereof is perpendicular to the central axis plane of the cylinder section (4); The adjustment structure comprises two fixed plates (36), a cam (37), and a motor (38); the two fixed plates (36) are vertically arranged on the moving end of the moving structure and are arranged parallel to the moving direction of the moving end; The cam (37) is installed between two fixed plates (36); the cross section of the cam (37) is a variable diameter curve; the cam (37) is provided with a 0 position and a maximum rotation angle, and the diameter of the cam (37) gradually increases during the process of rotating from the 0 position to the maximum rotation angle; The motor (38) is arranged on the outside of a fixed plate (36), and its driving end is connected to the cam (37) to drive the cam (37) to rotate; The two measuring members (39) are respectively mounted on the upper ends of the two fixing plates (36), and their measuring ends respectively correspond to the outer walls of the two barrel sections (4) to be assembled, and are used to measure the distance between them and the outer walls of the two barrel sections (4) in real time.

2. A cylinder segment assembly device according to claim 1, characterized in that: The moving structure comprises a guide rail frame (32), a lead screw (33), a slide block (34), and a hand wheel (35); The guide rail frame (32) is mounted on the base (31), and the lead screw (33) is mounted in the middle of the guide rail frame (32) and is parallel to the guide rail frame (32); the lead screw (33) is perpendicular to the cylinder section (4); The hand wheel (35) is connected to one end of the lead screw (33) away from the barrel section (4), the slider (34) is sleeved on the lead screw (33), and both sides of the slider (34) are connected to the guide rail frame (32); The slider (34) is the moving end of the moving structure, and the two fixing plates (36) are vertically arranged on the slider (34).

3. A cylinder segment assembly device according to claim 2, characterized in that: Each roller frame (2) comprises a bottom plate (21) and two rollers (22); the two rollers (22) are both cylindrical and are respectively located at two ends of the bottom plate (21); each roller (22) is provided with a roller motor for driving the cylinder section (4) to rotate.

4. A cylinder segment assembly device according to claim 3, characterized in that: The two measuring parts (39) both adopt laser distance measuring devices.

5. The cylinder segment assembly device according to claim 4, characterized in that: The motor (38) is also integrated with an angular displacement sensor for measuring the rotation angle of the cam (37).

6. A cylinder segment assembly method, based on a cylinder segment assembly device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, placing two cylinder sections (4) to be assembled on two roller frames (2) respectively, so that the center planes of the two cylinder sections (4) to be assembled are located on the same plane; S2, the measuring ends of the two measuring pieces (39) correspond to the outer walls of the assembly ends of the two barrel segments (4) to be assembled, respectively, and the cam (37) is located at position 0; the cam (37) is driven by the moving structure to move toward the barrel segment (4) until the cam (37) is in close contact with the outer wall of one of the barrel segments (4); S3, two measuring pieces (39) measure the distance between them and the two cylinder sections (4) respectively, and the readings are d1 and d2, then the difference between d1 and d2 is the misalignment amount; the allowable value of the misalignment amount is L; If |d1-d2|≤L, the misalignment is within the allowable range, then proceed to step S6; If |d1-d2|>L, the misalignment amount is not within the allowable range, then proceed to step S4 to adjust the misalignment amount; S4, the motor (38) drives the cam (37) to start rotating from position 0 in the direction of increasing diameter, and the roller frame (2) drives the cylinder section (4) to rotate in the opposite direction to the cam (37); S5, during the rotation process, the cam (37) gradually squeezes the outer wall of the barrel section (4), so that the misalignment between the two barrel sections (4) is reduced, and then the cam (37) and the barrel section (4) stop rotating, and return to step S3; S6. Spot welding the two cylinder sections (4); S7, rotating the cylinder segment (4) to the next spot-fixing position, repeating steps S3 to S6, until all spot-fixing welding is completed, thereby completing the assembly of the cylinder segment (4).

7. A cylinder segment assembly method according to claim 6, characterized in that: In step S3: If |d1-d2|>L, but the cam (37) has reached the maximum rotation angle, the hand wheel (35) drives the slider (34) to slide on the guide frame (32), driving the cam (37) to move away from the barrel section (4), so that the cam (37) is separated from the outer wall of the barrel section (4); then, the cam (37) is rotated back to the 0 position, and the hand wheel (35) drives the slider (34) to slide on the guide frame (32), driving the cam (37) to move towards the barrel section (4), so that the cam (37) is again in close contact with the outer wall of the barrel section (4), and then step S4 is performed.

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