Mechanical arm for welding cylindrical section of air separation plant

Abstract

The utility model discloses a mechanical arm for welding a cylindrical section of air separation equipment. The mechanical arm comprises a base. A vertical guide rail is arranged on the upper surface of the base, a lifting plate is slidably connected to the inner side face of the vertical guide rail, a hydraulic telescopic rod is installed on the upper surface of the base, the telescopic end of the hydraulic telescopic rod is connected with the lower surface of the lifting plate, a sleeve is connected to the end of the lifting plate, and a polyhedral straight rod is slidably connected to the inner side face of the sleeve. A power box for controlling the polyhedral straight rod to move is arranged on the outer side surface of the sleeve; according to the mechanical arm for welding the cylindrical section of the air separation equipment, workers and welding equipment can be rapidly conveyed to the splicing position of pipe fittings, the welding efficiency of the large pipe fittings is effectively improved, and meanwhile, a stable welding platform can be provided for the workers when welding is conducted in the large pipe fittings; the hydraulic telescopic rod drives the lifting plate to ascend and descend so that the polyhedral straight rod can be controlled to ascend and descend, and the vertical guide rail is used for limiting the position of the polyhedral straight rod so that the polyhedral straight rod can ascend and descend.

Description

Technical Field

[0001] The present application relates to the technical field of air separation equipment welding, and in particular to a robot arm for welding columnar sections of air separation equipment. Background Art

[0002] Air separation plants are large industrial units used to produce liquid or gaseous industrial gases. These plants usually consist of a series of large cylindrical sections that need to be connected by welding processes. In the construction process of air separation plants, the welding of cylindrical sections is a key step, which is directly related to the safety, stability and service life of the equipment.

[0003] When welding the columnar section of the air separation equipment, it is necessary to first use a positioner to butt the two sections together, then set up a welding platform at the welding point, and the workers climb onto the welding platform to weld the external connection of the pipe fittings. After the external welding of the pipe fittings is completed, the workers need to drill into the inside of the columnar pipe fittings to weld and process the joints. Since the inside of the pipe fittings is uneven, it is difficult for the workers to perform welding operations, resulting in low welding efficiency. Summary of the invention

[0004] The present application provides a robotic arm for welding columnar sections of an air separation device, which can quickly deliver workers and welding equipment to the splicing position of pipe fittings, effectively improving the welding efficiency of large pipe fittings. At the same time, when welding inside large pipe fittings, it can provide workers with a stable welding platform, effectively ensuring the welding quality, and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a robotic arm for welding columnar sections of an air separation device, comprising a base; a vertical guide rail is provided on the upper surface of the base, and a lifting plate is slidably connected to the inner side surface of the vertical guide rail, a hydraulic telescopic rod is installed on the upper surface of the base, the telescopic end of the hydraulic telescopic rod is connected to the lower surface of the lifting plate, a sleeve is connected to the end of the lifting plate, a polyhedral straight rod is slidably connected to the inner side surface of the sleeve, and a power box for controlling the movement of the polyhedral straight rod is provided on the outer side surface of the sleeve.

[0006] The power box comprises a stepping motor, the output shaft of the stepping motor is connected with a driving gear, the lower surface of the polyhedral straight rod is provided with a rack, and the rack is meshed with the driving gear.

[0007] Preferably, a mounting hole is provided on the upper surface of the base.

[0008] Preferably, there are two bases, and vertical guide rails are provided at the front and rear ends of the upper surfaces of the two bases.

[0009] Preferably, a first limiting roller and a second limiting roller are provided on the outer side surface of the lifting plate, and both the first limiting roller and the second limiting roller are arranged close to the inner side surface of the vertical guide rail.

[0010] Preferably, the upper end of the inner side surface of the sleeve is connected to a limiting roller, the lower end of the inner side surface of the sleeve is connected to a load-bearing roller, and the limiting roller and the load-bearing roller are both arranged close to the outer side surface of the polyhedral straight rod.

[0011] Preferably, a linear motor is provided at the end of the polyhedral straight rod.

[0012] Preferably, a hanging basket is provided at the end of the polyhedral straight rod.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] 1. The mechanical arm for welding the column section of the air separation equipment can quickly send workers and welding equipment to the splicing position of the pipe fittings, effectively improving the welding efficiency of large pipe fittings. At the same time, it can provide workers with a stable welding platform when welding inside large pipe fittings;

[0015] 2. The hydraulic telescopic rod drives the lifting plate to control the lifting of the polyhedron straight rod. The vertical guide rail is used to limit the position of the polyhedron straight rod so that the polyhedron straight rod can be lifted and lowered. After the equipment is installed on the end of the polyhedron straight rod, it can be quickly inserted into the interior of the large pipe fitting, which facilitates the rapid welding of the workpiece. The power box is used to control the length of the polyhedron straight rod inserted into the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of Example 2 of the present application;

[0018] Figure 3 This is the main view of this application;

[0019] Figure 4 This is the left view of this application;

[0020] Figure 5 This is a top view of this application.

[0021] In the figure: 1 polyhedral straight rod, 2 vertical guide rail, 3 sleeve, 4 hanging basket, 5 rack, 6 base, 7 hydraulic telescopic rod, 8 linear motor, 9 power box, 10 limit roller, 11 load-bearing roller, 12 stepper motor, 13 driving gear, 14 lifting plate, 15 limit roller one, 16 limit roller two. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 2 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0024] Embodiment 1:

[0025] See also Figure 1 , 3 , 4 and 5, the present application provides the following technical solutions: a robot arm for welding columnar sections of air separation equipment, comprising a base 6; a vertical guide rail 2 is provided on the upper surface of the base 6, and a lifting plate 14 is slidably connected to the inner side surface of the vertical guide rail 2, a hydraulic telescopic rod 7 is installed on the upper surface of the base 6, the telescopic end of the hydraulic telescopic rod 7 is connected to the lower surface of the lifting plate 14, and a sleeve 3 is connected to the end of the lifting plate 14, the inner side surface of the sleeve 3 is slidably connected to a polyhedral straight rod 1, and the outer side surface of the sleeve 3 is provided with a power box 9 for controlling the movement of the polyhedral straight rod 1.

[0026] Specifically, the hydraulic telescopic rod 7 drives the lifting plate 14 to lift and lower, which can control the lifting and lowering of the polyhedron straight rod 1. The vertical guide rail 2 is used to limit the position of the polyhedron straight rod 1, so that the polyhedron straight rod 1 can perform lifting and lowering movements. After the end of the polyhedron straight rod 1 is installed with the equipment, it can be quickly inserted into the interior of a large pipe fitting, which facilitates the rapid welding of the workpiece. The power box 9 is used to control the length of the polyhedron straight rod 1 inserted into the interior of the pipe fitting.

[0027] The power box 9 includes a stepper motor 12 , the output shaft of the stepper motor 12 is connected to a driving gear 13 , and a rack 5 is provided on the lower surface of the polyhedral straight rod 1 , and the rack 5 is meshed with the driving gear 13 .

[0028] Specifically, the stepping motor 12 drives the rack 5 to move via the driving gear 13 so as to control the extension and retraction of the polyhedral straight rod 1 .

[0029] Furthermore, a mounting hole is provided on the upper surface of the base 6 .

[0030] Specifically, the arrangement of the mounting holes can fix the base 6 on the ground, thereby increasing the overall stability of the device.

[0031] Furthermore, there are two bases 6 , and vertical guide rails 2 are provided at both the front and rear ends of the upper surfaces of the two bases 6 .

[0032] Specifically, the vertical guide rail 2 is used to limit the position of the sleeve 3 so that it can only perform lifting and lowering movements.

[0033] Furthermore, a limiting roller 15 and a limiting roller 2 16 are provided on the outer side surface of the lifting plate 14 , and the limiting roller 15 and the limiting roller 2 16 are both arranged close to the inner side surface of the vertical guide rail 2 .

[0034] Specifically, there are two limiting rollers 15 , which are arranged close to the inner wall of the vertical guide rail 2 . The limiting roller 15 and the limiting roller 2 16 are used to ensure that the lifting plate 14 can move up and down easily on the inner side of the vertical guide rail 2 .

[0035] Furthermore, the upper end of the inner side surface of the sleeve 3 is connected to a limiting roller 10 , and the lower end of the inner side surface of the sleeve 3 is connected to a load-bearing roller 11 . Both the limiting roller 10 and the load-bearing roller 11 are arranged close to the outer side surface of the polyhedral straight rod 1 .

[0036] Specifically, there are two groups of load-bearing rollers 11 and limit rollers 10, and the two groups of load-bearing rollers 11 and limit rollers 10 are symmetrically arranged. Each group contains at least one load-bearing roller 11 and limit roller 10, and at least one load-bearing roller 11 and limit roller 10 are linearly distributed along the inner wall of the sleeve 3.

[0037] More specifically, the arrangement of the load-bearing roller 11 and the limiting roller 10 can effectively reduce sliding friction.

[0038] Furthermore, a linear motor 8 is provided at the end of the polyhedral straight rod 1 .

[0039] Specifically, the automatic welding equipment is installed on the linear motor 8, so that the robot arm can achieve three-axis movement, thereby ensuring the freedom of the automatic welding equipment.

[0040] Embodiment 2:

[0041] The main difference between Example 2 and Example 1 is that the technical solution disclosed in Example 1 is mainly used for the automatic welding process of the columnar segments of the air separation equipment, and the technical solution disclosed in Example 2 is mainly used for the manual welding process of the columnar segments of the air separation equipment.

[0042] See also Figure 2, 3 , 4 and 5, the present application provides the following technical solutions: a robot arm for welding columnar sections of air separation equipment, comprising a base 6; a vertical guide rail 2 is provided on the upper surface of the base 6, and a lifting plate 14 is slidably connected to the inner side surface of the vertical guide rail 2, a hydraulic telescopic rod 7 is installed on the upper surface of the base 6, the telescopic end of the hydraulic telescopic rod 7 is connected to the lower surface of the lifting plate 14, and a sleeve 3 is connected to the end of the lifting plate 14, the inner side surface of the sleeve 3 is slidably connected to a polyhedral straight rod 1, and the outer side surface of the sleeve 3 is provided with a power box 9 for controlling the movement of the polyhedral straight rod 1.

[0043] Specifically, the hydraulic telescopic rod 7 drives the lifting plate 14 to lift and lower, which can control the lifting and lowering of the polyhedron straight rod 1. The vertical guide rail 2 is used to limit the position of the polyhedron straight rod 1, so that the polyhedron straight rod 1 can perform lifting and lowering movements. After the end of the polyhedron straight rod 1 is installed with the equipment, it can be quickly inserted into the interior of a large pipe fitting, which facilitates the rapid welding of the workpiece. The power box 9 is used to control the length of the polyhedron straight rod 1 inserted into the interior of the pipe fitting.

[0044] The power box 9 includes a stepper motor 12 , the output shaft of the stepper motor 12 is connected to a driving gear 13 , and a rack 5 is provided on the lower surface of the polyhedral straight rod 1 , and the rack 5 is meshed with the driving gear 13 .

[0045] Specifically, the stepping motor 12 drives the rack 5 to move via the driving gear 13 so as to control the extension and retraction of the polyhedral straight rod 1 .

[0046] Furthermore, a mounting hole is provided on the upper surface of the base 6 .

[0047] Specifically, the arrangement of the mounting holes can fix the base 6 on the ground, thereby increasing the overall stability of the device.

[0048] Furthermore, there are two bases 6 , and vertical guide rails 2 are provided at both the front and rear ends of the upper surfaces of the two bases 6 .

[0049] Specifically, the vertical guide rail 2 is used to limit the position of the sleeve 3 so that it can only perform lifting and lowering movements.

[0050] Furthermore, a limiting roller 15 and a limiting roller 2 16 are provided on the outer side surface of the lifting plate 14 , and the limiting roller 15 and the limiting roller 2 16 are both arranged close to the inner side surface of the vertical guide rail 2 .

[0051] Specifically, there are two limiting rollers 15 , which are arranged close to the inner wall of the vertical guide rail 2 . The limiting roller 15 and the limiting roller 2 16 are used to ensure that the lifting plate 14 can move up and down easily on the inner side of the vertical guide rail 2 .

[0052] Furthermore, the upper end of the inner side surface of the sleeve 3 is connected to a limiting roller 10 , and the lower end of the inner side surface of the sleeve 3 is connected to a load-bearing roller 11 . Both the limiting roller 10 and the load-bearing roller 11 are arranged close to the outer side surface of the polyhedral straight rod 1 .

[0053] Specifically, there are two groups of load-bearing rollers 11 and limit rollers 10, and the two groups of load-bearing rollers 11 and limit rollers 10 are symmetrically arranged. Each group contains at least one load-bearing roller 11 and limit roller 10, and at least one load-bearing roller 11 and limit roller 10 are linearly distributed along the inner wall of the sleeve 3.

[0054] More specifically, the arrangement of the load-bearing roller 11 and the limiting roller 10 can effectively reduce sliding friction.

[0055] Furthermore, a hanging basket 4 is provided at the end of the polyhedral straight rod 1 .

[0056] Specifically, when workers are required to perform manual welding, the workers and welding equipment can quickly reach the welding station by riding on the hanging basket 4, and the hanging basket 4 can also be used as a mobile welding equipment.

[0057] During use: During automatic welding, the automatic welding equipment is installed on the slide on the linear motor 8. The hydraulic telescopic rod 7 drives the automatic welding equipment to rise and fall by telescoping. The stepper motor 12 drives the polyhedral straight rod 1 to telescope to adjust the horizontal position of the automatic welding equipment. The linear motor 8 drives the automatic welding equipment to make fine adjustments forward and backward, which can effectively ensure the welding accuracy.

[0058] During manual welding, the worker sits on the hanging basket 4, and the worker can be quickly sent to the welding station by controlling the extension and lifting of the polyhedral straight rod 1.

[0059] It is worth noting that the input ends of the hydraulic telescopic rod 7, the linear motor 8 and the stepping motor 12 disclosed in the present application are all electrically connected to the output end of the external power supply through an external control switch.

[0060] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A robot arm for welding column sections of air separation equipment, characterized in that: The invention comprises a base (6); a vertical guide rail (2) is provided on the upper surface of the base (6); a lifting plate (14) is slidably connected to the inner side surface of the vertical guide rail (2); a hydraulic telescopic rod (7) is installed on the upper surface of the base (6); the telescopic end of the hydraulic telescopic rod (7) is connected to the lower surface of the lifting plate (14); a sleeve (3) is connected to the end of the lifting plate (14); a polyhedral straight rod (1) is slidably connected to the inner side surface of the sleeve (3); and a power box (9) for controlling the movement of the polyhedral straight rod (1) is provided on the outer side surface of the sleeve (3); The power box (9) comprises a stepper motor (12), the output shaft of the stepper motor (12) is connected to a driving gear (13), and a rack (5) is provided on the lower surface of the polyhedral straight rod (1), and the rack (5) is meshed with the driving gear (13).

2. The robot arm for welding column sections of an air separation equipment according to claim 1, characterized in that: The upper surface of the base (6) is provided with a mounting hole.

3. The robot arm for welding column sections of air separation equipment according to claim 1, characterized in that: There are two bases (6), and vertical guide rails (2) are provided at both front and rear ends of the upper surfaces of the two bases (6).

4. The robot arm for welding column sections of an air separation plant according to claim 1, characterized in that: The outer side surface of the lifting plate (14) is provided with a limiting roller 1 (15) and a limiting roller 2 (16), and the limiting roller 1 (15) and the limiting roller 2 (16) are both arranged in close contact with the inner side surface of the vertical guide rail (2).

5. The robot arm for welding column sections of air separation equipment according to claim 1, characterized in that: The upper end of the inner side surface of the sleeve (3) is connected to a limiting roller (10), and the lower end of the inner side surface of the sleeve (3) is connected to a load-bearing roller (11). The limiting roller (10) and the load-bearing roller (11) are both arranged in close contact with the outer side surface of the polyhedral straight rod (1).

6. The robot arm for welding column sections of air separation equipment according to claim 1, characterized in that: A linear motor (8) is provided at the end of the polyhedral straight rod (1).

7. The robot arm for welding column sections of air separation equipment according to claim 1, characterized in that: A hanging basket (4) is provided at the end of the polyhedral straight rod (1).

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