Positioning device applied to water cooling wall welding

Abstract

The invention discloses a positioning device applied to water cooling wall welding. The positioning device comprises a base, a pressing wheel mechanism and a positioning and clamping mechanism. The pressing wheel mechanism and the clamping mechanism are arranged in the extending direction of the tube panel assembly. The pressing wheel mechanism comprises a fixed pressing wheel and an adjustable pressing wheel, and the height of the adjustable pressing wheel can be adjusted in the vertical direction. The clamping mechanism is provided with an upper clamping station and a lower clamping station, an L-shaped guide block is arranged on the upper clamping station, an axial guide wheel and a supporting block are arranged at the position, opposite to the L-shaped guide block, of the lower clamping station, and the upper clamping station and the lower clamping station can slide up and down in the vertical direction. The positioning device applied to water cooling wall welding is innovatively designed, the water cooling wall is specifically subjected to pressing wheel type fixing through the device, positioning and clamping are conducted in a welding area, then welding is conducted through a robot, automatic welding of the water cooling wall is achieved, and welding stability is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled wall welding, in particular to a positioning device used for water-cooled wall welding. Background Art

[0002] As one of the main structures of coal-fired boilers, water-cooled wall has a large number of applications, many specifications of round tubes in its components, slender workpieces, large welding workload, and high welding requirements, which leads to cumbersome production processes, low welding qualification rate, large labor demand, and low efficiency. Manual clamping and positioning of workpieces, slender workpieces with many specifications, requires multiple workers to assemble, it is difficult to ensure the size of the assembly, and the assembly time is long. Manual welding requires multiple clamping, the process is cumbersome and it is difficult to ensure the quality, and the welding efficiency is low.

[0003] In view of the above problems, it is necessary to develop and design a clamping and positioning device that can assist welding, so as to fix the slender cold water wall tube screen, which can be used in conjunction with automatic welding equipment to achieve automated welding in subsequent applications. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a positioning device for water-cooled wall welding.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses a positioning device for water-cooled wall welding, comprising a base, a pressure wheel mechanism and a positioning clamping mechanism;

[0007] The pressing wheel mechanism and the clamping mechanism are arranged along the extension direction of the tube panel assembly;

[0008] The pressing wheel mechanism includes a fixed pressing wheel and an adjustable pressing wheel, and the adjustable pressing wheel can adjust the height along the vertical direction;

[0009] The clamping mechanism has two clamping stations, the upper clamping station is provided with an L-shaped guide block, and the lower clamping station is provided with an axial guide wheel and a support block at a position relative to the L-shaped guide block. Both the upper clamping station and the lower clamping station can slide up and down in the vertical direction.

[0010] As a preferred technical solution of the present invention, two groups of the pressing wheel mechanisms are arranged in parallel.

[0011] As a preferred technical solution of the present invention, the pressure wheel mechanism includes a coaxial driver and a driving connecting rod for driving the fixed pressure wheel and the adjustable pressure wheel to rotate. The driving connecting rod adopts a universal connecting rod to drive the fixed pressure wheel and the adjustable pressure wheel.

[0012] As a preferred technical solution of the present invention, the pressing wheel mechanism includes a support vertically mounted on the base, and the fixed pressing wheel is rotatably mounted on the support through a bearing base;

[0013] A vertical slide groove is opened on the side of the support, and a linear guide is installed in the vertical slide groove. A bearing sliding base is installed on the end of the adjustable pressure wheel. The bearing sliding base is slidingly connected to the linear guide. An adjusting motor is installed on the upper part of the support. The adjusting motor drive is connected to a worm gear assembly. The worm gear assembly transmits power to the screws vertically installed on both sides of the support. The bearing sliding base is transmission-connected to the screw.

[0014] As a preferred technical solution of the present invention, a column for installing a clamping and positioning mechanism is also installed on the base, a linear bearing is arranged on the side of the column, a mounting plate is slidably connected to the linear bearing, a driving motor is installed on the top of the column, and the main shaft of the driving motor drives a vertically arranged transmission screw through a worm gear mechanism, and the transmission screw is drivingly connected to the mounting plate.

[0015] As a preferred technical solution of the present invention, a linear bearing assembly is laterally slidably connected to the mounting plate, and the linear bearing assembly is positioned and fixed to the mounting plate by a bolt fixing member;

[0016] A spring is installed at the bottom of the linear bearing assembly, a carrier plate is installed at the bottom of the spring, and an L-shaped guide block is fixed on the carrier plate through a set screw.

[0017] As a preferred technical solution of the present invention, a crossbeam is fixedly installed on the end surface of the base, a mounting guide rail is arranged above the crossbeam, and a lifting motor is installed below the crossbeam. The lifting motor is driven and connected to the mounting guide rail through a worm gear mechanism and a lead screw to realize the rising and falling of the mounting guide rail.

[0018] An axial guide wheel is fixedly mounted on the upper end of the mounting guide rail, and lateral guide wheels are arranged on both sides of the axial guide wheel.

[0019] As a preferred technical solution of the present invention, the bottom of the lateral guide wheel and the axial guide wheel are both provided with a fixed seat for installation with the installation guide rail, and fixed handles are provided on both sides of the fixed seat to achieve limiting on the left and right sides of the installation guide rail.

[0020] The beneficial effects of the present invention are:

[0021] The present invention innovatively designs a positioning device for water-cooled wall welding. This device performs targeted pressure wheel fixation on the water-cooled wall, and performs positioning clamping in the welding area, and then performs welding through a robot, thereby realizing automatic welding of the water-cooled wall and ensuring welding stability. Through the pressure wheel drive, automatic feeding of long-distance workpieces is realized, which effectively improves production efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation structure of the pressing wheel of the present invention;

[0025] Figure 3 yes Figure 2 A side view structural schematic diagram of;

[0026] Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the lower clamping station structure. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] Example: Figure 1-5 As shown, it includes a base 1, a pressing wheel mechanism 2 and a positioning clamping mechanism 3;

[0030] The pressing wheel mechanism 2 and the clamping mechanism 3 are arranged along the extension direction of the tube panel assembly;

[0031] The pressing wheel mechanism 2 includes a fixed pressing wheel 24 and an adjustable pressing wheel 25. The height of the adjustable pressing wheel 25 can be adjusted along the vertical direction. The pressing wheel mechanism 2 is arranged in two groups in parallel.

[0032] The pressing wheel mechanism 2 includes a coaxial driver 21 and a driving connecting rod 22 for driving the fixed pressing wheel 24 and the adjustable pressing wheel 25 to rotate. The driving connecting rod 22 is connected to the fixed pressing wheel 24 and the adjustable pressing wheel 25 by a universal connecting rod. The pressing wheel mechanism 2 includes a support 23 vertically mounted on the base 1, and the fixed pressing wheel 24 is rotatably mounted on the support 23 through a bearing base 212;

[0033] The driving connecting rod adopts a universal connecting rod, which can not only ensure the torque output, but also adapt to various specifications of round tubes. When the roundness of the round tube varies greatly, the radial pressure on the coaxial driver 22 can be reduced, and its service life can be increased. The fixed pressure wheel 24 is fixedly connected to the support 23 by a bolt group. The corresponding pressure wheel can be selected according to the size of the round tube for rapid replacement and stable rotation.

[0034] A vertical slide groove is opened on the side of the support 23, and a linear guide 211 is installed in the vertical slide groove. A bearing sliding base is installed on the end of the adjustable pressure wheel 25, and the bearing sliding base is slidingly connected to the linear guide 211. An adjusting motor 28 is installed on the upper part of the support 23, and the adjusting motor 28 is driven and connected to a worm gear assembly 26. The worm gear assembly 26 transmits power to the screw 27 vertically installed on both sides of the support 23, and the bearing sliding base is drivingly connected to the screw 27.

[0035] The clamping mechanism 3 has two clamping stations, the upper clamping station is provided with an L-shaped guide block 36, and the lower clamping station is provided with an axial guide wheel 38 and a support block 37 at a position relative to the L-shaped guide block 36. Both the upper clamping station and the lower clamping station can slide up and down in the vertical direction.

[0036] A column for installing the clamping and positioning mechanism 3 is also installed on the base 1, and a linear bearing 315 is arranged on the side of the column, and a mounting plate 313 is slidably connected to the linear bearing 315. A driving motor 31 is installed on the top of the column. The main shaft 32 of the driving motor 31 drives a vertically arranged transmission screw 33 through a worm gear mechanism, and the transmission screw 33 is drivingly connected to the mounting plate 313.

[0037] A linear bearing assembly 312 is slidably connected to the mounting plate 313 in a transverse direction. The linear bearing assembly 312 is positioned and fixed to the mounting plate 313 by a bolt fixing member 311.

[0038] A spring 314 is installed at the bottom of the linear bearing assembly 312, a carrier plate is installed at the bottom of the spring 314, and an L-shaped guide block 316 is fixed to the carrier plate by a set screw 317. The carrier plate is connected to the linear bearing assembly 312 and has a certain degree of sliding freedom. The spring 314 provides buffer support when the carrier plate slides under force.

[0039] A crossbeam is fixedly mounted on the end surface of the base 1, a mounting guide rail 310 is arranged above the crossbeam, a lifting motor 310 is installed below the crossbeam, and the lifting motor 310 is driven and connected to the mounting guide rail 310 through a worm gear mechanism and a lead screw to achieve the rise and fall of the mounting guide rail 310;

[0040] An axial guide wheel 38 is fixedly mounted on the upper end of the installation guide rail 310, and lateral guide wheels 39 are arranged on both sides of the axial guide wheel 38. The bottoms of the lateral guide wheels 39 and the axial guide wheels 38 are both provided with fixing seats for installation with the installation guide rail 310, and fixing handles 36 are arranged on both sides of the fixing seats to achieve the limit position on the left and right sides of the installation guide rail 310.

[0041] The installation guide rail 310 serves as an expandable installation platform, provides installation for various positioning and clamping parts, and can adjust the distance horizontally and add or remove parts. The parts are fixed by the fixing handle 36 to determine the horizontal position of the parts.

[0042] In use, the axial guide wheel 38 and the L-shaped guide block 316 are designed according to the specifications of the round tube and the flat steel. The support block 37 plays a supporting role and is arranged at a position corresponding to the lower position of the L-shaped guide block 316 to achieve equidistant guidance and clamping between the round tubes of the water-cooled wall. The lateral guide wheel 39 prevents the water-cooled wall from running sideways. The mounting plate 313 provides a mounting platform for the linear bearing assembly 312 and the spring 314, and the spring 314 provides a pressure buffering effect.

[0043] Finally, in order to cooperate with the automatic control, wire encoders (29, 34) and photoelectric sensors (210, 35) are installed on the sides of the pressing wheel mechanism 2 and the clamping mechanism 3 to feedback the position during work.

[0044] The specific process steps of the device are as follows:

[0045] 1. Select appropriate fixed pressing wheel 24 and adjustable pressing wheel 25, and connect them with bolts through rolling bearing base 212;

[0046] 2. Select a suitable axial guide wheel 38, adjust the position and spacing of the support block 37 and the L-shaped guide block 316, and fix them with the set screws 317;

[0047] 3. Start the adjustment motor 28 to raise and hold the adjustable pressing wheel 25;

[0048] 4. Start the drive motor 31 to raise and lower the installation guide rail 310 and other components and maintain them;

[0049] 5. Place the water-cooled wall workpiece to be processed on the fixed pressing wheel 24;

[0050] 6. Start the reverse rotation command of the regulating motor 28 to lower the adjustable pressing wheel 25 and press the water-cooled wall;

[0051] 7. Start the reverse rotation command of the drive motor 31 to lower and raise the installation guide rail 310 until the photoelectric sensor 35 receives a signal, thereby achieving the positioning and clamping of the water-cooled wall round tube;

[0052] 8. Start the coaxial starter and rotate the pressure wheel to realize the forward conveyance of the water-cooled wall;

[0053] 9. Cooperate with welding robots to complete the rest of the water-cooled wall manufacturing work.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning device used for water-cooled wall welding, characterized in that: It comprises a base (1), a pressing wheel mechanism (2) and a positioning clamping mechanism (3); The pressing wheel mechanism (2) and the clamping mechanism (3) are arranged along the extension direction of the tube panel assembly; The pressing wheel mechanism (2) comprises a fixed pressing wheel (24) and an adjustable pressing wheel (25), and the height of the adjustable pressing wheel (25) can be adjusted along the vertical direction; The clamping mechanism (3) has two clamping stations, an upper clamping station and an lower clamping station. The upper clamping station is provided with an L-shaped guide block (36), and the lower clamping station is provided with an axial guide wheel (38) and a support block (37) at a position relative to the L-shaped guide block (36). Both the upper clamping station and the lower clamping station can slide up and down in a vertical direction.

2. A positioning device for water-cooled wall welding according to claim 1, characterized in that: The pressing wheel mechanisms (2) are arranged in two groups in parallel.

3. A positioning device for water-cooled wall welding according to claim 1 or 2, characterized in that: The pressing wheel mechanism (2) comprises a coaxial driver (21) and a driving connecting rod (22) for driving the fixed pressing wheel (24) and the adjustable pressing wheel (25) to rotate. The driving connecting rod (22) is connected to the fixed pressing wheel (24) and the adjustable pressing wheel (25) by a universal connecting rod.

4. The positioning device for water-cooled wall welding according to claim 3 is characterized in that: The pressing wheel mechanism (2) comprises a support (23) vertically mounted on the base (1), and a fixed pressing wheel (24) rotatably mounted on the support (23) via a bearing base (212); A vertical slide groove is provided on the side of the support (23), a linear guide rail (211) is installed in the vertical slide groove, a bearing sliding base is installed at the end of the adjustable pressure wheel (25), the bearing sliding base is slidably connected to the linear guide rail (211), an adjustment motor (28) is installed on the upper part of the support (23), the adjustment motor (28) is driven and connected to a worm gear assembly (26), the worm gear assembly (26) transmits power to a lead screw (27) vertically installed on both sides of the support (23), and the bearing sliding base is drivingly connected to the lead screw (27).

5. The positioning device for water-cooled wall welding according to claim 1, characterized in that: A column for mounting a clamping and positioning mechanism (3) is also mounted on the base (1), a linear bearing (315) is arranged on the side of the column, a mounting plate (313) is slidably connected to the linear bearing (315), a driving motor (31) is mounted on the top of the column, a main shaft (32) of the driving motor (31) drives a vertically arranged transmission screw (33) through a worm gear mechanism, and the transmission screw (33) is drivingly connected to the mounting plate (313).

6. The positioning device for water-cooled wall welding according to claim 5, characterized in that: A linear bearing assembly (312) is laterally slidably connected to the mounting plate (313), and the linear bearing assembly (312) is positioned and fixed to the mounting plate (313) by a bolt fixing member (311); A spring (314) is installed at the bottom of the linear bearing assembly (312), a carrier plate is installed at the bottom of the spring (314), and an L-shaped guide block (316) is fixed on the carrier plate by a set screw (317).

7. The positioning device for water-cooled wall welding according to claim 6, characterized in that: A crossbeam is fixedly mounted on the end surface of the base (1), a mounting guide rail (310) is arranged above the crossbeam, a lifting motor (310) is mounted below the crossbeam, and the lifting motor (310) is drivingly connected to the mounting guide rail (310) via a worm gear mechanism and a lead screw to achieve the ascent and descent of the mounting guide rail (310); An axial guide wheel (38) is fixedly mounted on the upper end of the guide rail (310), and lateral guide wheels (39) are arranged on both sides of the axial guide wheel (38).

8. The positioning device for water-cooled wall welding according to claim 1, characterized in that: The bottom of the lateral guide wheel (39) and the axial guide wheel (38) are both provided with a fixing seat for installation with the installation guide rail (310), and fixed handles (36) are provided on both sides of the fixing seat to achieve the limitation on the left and right sides of the installation guide rail (310).

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