CN112318015A - Process method for robot welding of super-huge type water ring vacuum pump impeller and implementation equipment - Google Patents

Process method for robot welding of super-huge type water ring vacuum pump impeller and implementation equipment Download PDF

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Publication number
CN112318015A
CN112318015A CN202011132657.5A CN202011132657A CN112318015A CN 112318015 A CN112318015 A CN 112318015A CN 202011132657 A CN202011132657 A CN 202011132657A CN 112318015 A CN112318015 A CN 112318015A
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China
Prior art keywords
blades
welding
impeller
blade
blade positioning
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CN202011132657.5A
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CN112318015B (en
Inventor
赵玉刚
崔京尧
陈维茂
荆延波
孟凡瑞
徐红伟
孟建兵
邓曰明
赵传营
孙海波
仪春梅
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Zibo Water Ring Vacuum Pump Factory Co ltd
Shandong University of Technology
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Zibo Water Ring Vacuum Pump Factory Co ltd
Shandong University of Technology
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Publication of CN112318015A publication Critical patent/CN112318015A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02Carriages for supporting the welding or cutting element
    • B23K37/0252Steering means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/185Rotors consisting of a plurality of wheels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a process method and implementation equipment for robot welding of an impeller of an extra-large water ring vacuum pump. Two ends of a single group of blades are embedded into the positioning grooves of the blade positioning disc to ensure the positioning precision. And welding the axial connecting part of the installed single group of blades and the impeller hub by using a welding robot, rotating the impeller hub by 180 degrees, installing the single group of blades and welding the axial connecting part of the single group of blades. The remaining single group of blades are installed and welded as required to maintain the mounting position furthest away from the mounted blade position. And withdrawing the outer disc of the blade positioning disc, replacing the outer disc of the blade positioning disc with the inner disc of the blade positioning disc to position, welding the radial connecting parts of all the impeller blades and the impeller hub, and then installing and welding the annular plate. By adopting the processing method, the spatial position precision of the blade relative to the hub, the consistency of the size of the welding line and the welding quality are ensured, the structural strength of the impeller is improved, and the generation of stress concentration is effectively reduced.

Description

Process method for robot welding of super-huge type water ring vacuum pump impeller and implementation equipment
Technical Field
The invention belongs to the technical field of water ring vacuum pumps, and particularly relates to a process method and implementation equipment for robot welding of an impeller of an extra-large water ring vacuum pump.
Background
The water ring vacuum pump is internally provided with an impeller which is provided with fixed blades and is eccentrically arranged, the impeller converts mechanical energy into kinetic energy of water through rotation to form a rotating water ring, the incompressible rotating water ring and the eccentrically arranged impeller form an air chamber with variable volume, and the change of pressure is generated to achieve the purpose of vacuum pumping. Because of the advantage of gas isothermal compression, the water ring vacuum pump is widely applied to a coal mine gas extraction system as a fluid machine for conveying gas.
Along with the production of the problems of continuous deepening of coal seam mining, increasing of coal seam gas content, continuous lengthening of the length of a gas extraction pipe network, negative pressure loss caused by a complex pipe network and the like, the extraction and standard-reaching requirements of extraction cannot be met by the traditional single small water ring vacuum pump or the extraction mode of multiple small water ring vacuum pumps connected in parallel, and the development of the extra-large water ring vacuum pump with large extraction amount, high negative pressure and low energy consumption is urgently needed.
The impeller is used as a rotating part for generating a water ring in the water ring vacuum pump and forming a variable-volume air chamber with the rotating water ring, and the performance of the impeller directly determines the performance of the water ring vacuum pump; aiming at the defects of sand holes, air holes, shrinkage porosity and the like of a large-scale cast integrated impeller, the problems of low yield, low blade shape precision and the like, the impeller with a welded structure is adopted. The impeller is formed by welding blades on a hub, the traditional manual blade welding lacks a blade positioning tool, the blade positioning precision is low, and the distances among the blades of the impeller after welding are unequal, so that the volume change of an air chamber is uneven, and the pumping stability of the water ring vacuum pump is seriously influenced; the traditional manual welding seam is uneven, welding stress is easily generated, the internal stress generated by welding is difficult to eliminate after the impeller is welded, the internal stress can cause the impeller blade to deform during working, and the setting of the operating efficiency of the water ring vacuum pump is influenced, and even major safety accidents are generated. In order to enhance the integral rigidity of the impeller and increase the structure of the multi-channel annular plate impeller, aiming at the welding of the multi-channel annular plate, the traditional manual welding has low efficiency and is difficult to ensure high precision and high quality.
Disclosure of Invention
Aiming at the key technical problems that the performance of a large-scale water ring vacuum pump is seriously influenced by blade deformation, fracture, blade position angle deviation, different distances and the like during the welding of a large-scale impeller, the robot welding process method and the realization equipment for the impeller of the super-large-scale water ring vacuum pump are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process method for welding an oversize water ring vacuum pump impeller robot is characterized by comprising the following steps:
1) the welding tool shaft is coaxially connected with the impeller hub and is connected with a planet wheel speed reducer and a servo motor through a coupler;
2) the inner plates of the blade positioning plates are respectively and fixedly arranged at the two sides of the middle part of the impeller hub, and then the outer plates of the blade positioning plates are correspondingly and fixedly arranged at the two ends of the impeller hub;
3) an impeller comprises 17-22 groups of identical blades, each group of blades comprises 2 identical blades, and taking the installation and welding of one group of blades as an example, the installation steps of the blades are as follows: the blades pass through the positioning grooves of the outer blade positioning plate and enter between the outer blade positioning plate and the inner blade positioning plate, and two ends of the blades are embedded into the positioning grooves; the other coaxial blade mounting step is as follows: the blades penetrate through the positioning grooves of the outer plate of the blade positioning plate and enter between the outer plate of the blade positioning plate and the inner plate of the blade positioning plate, and the two ends of the blades are embedded into the positioning grooves, so that the axial connecting part of a single group of blades and the impeller hub is automatically welded by using a welding robot;
4) the servo motor works, and the speed is reduced through the planet wheel speed reducer to drive the welding tool shaft and the impeller hub to rotate 180 degrees; installing a single group of 180-degree symmetrical blades and welding axial connecting parts; the circumferential installation positions of the other single group of blades on the impeller hub are required to keep the farthest distance from the position of the installed single group of blades;
5) according to the step of installing and positioning the single group of blades in the step 1) and the step 3), welding the axial connecting part of the residual single group of blades and the impeller hub by adopting a 180-degree symmetric welding method;
6) withdrawing the outer disc of the blade positioning disc, and replacing the positioning position of the outer disc of the blade positioning disc with the inner disc of the blade positioning disc to weld the radial connecting part of all the single-group impeller blades and the impeller hub;
7) installing 6 groups of annular plates in the openings of the single group of blades, and completing circumferential welding of the annular plates and the blades by using a welding robot;
8) and (4) withdrawing the inner disc of the blade positioning disc to complete the processing technology of the high-strength impeller with the reinforced integral welding structure of the multi-channel annular plate for positioning the blades of the super-huge water ring vacuum pump at high precision.
The robot welding process method for the impeller of the oversize water ring vacuum pump comprises the following steps that 5) the single group of blades are installed on the impeller hub one by one; the single group of blades and the impeller hub are welded one by one; and after the axial connecting part of the single group of blades and the impeller hub is welded, the next single group of blades are installed and welded with the axial connecting part of the impeller hub.
An apparatus for realizing an oversize water ring vacuum pump impeller robot welding process method comprises a servo motor, a planet wheel speed reducer, a coupler, an idler wheel, an impeller, a blade positioning disc, a welding tool shaft, a movable support platform, a base, a welding robot and a welding robot guide rail, wherein the servo motor and the planet wheel speed reducer are fixed on the base, the planet wheel speed reducer is connected with the welding tool shaft through the coupler, the idler wheel is installed and fixed on the base and plays a supporting role for the welding tool shaft, and the movable support platform is installed on the base and can move along the guide rail;
the impeller consists of 6 groups of annular plates, 17-22 groups of single-group blades and an impeller hub, each group of annular plates consists of a three-section structure, each group of blades consists of two single blades which are axially arranged, a welding tool shaft is coaxially connected with the impeller hub, the peripheries of the 17-22 groups of single-group blades are uniformly distributed on the impeller hub, openings for mounting the annular plates are formed in the impeller blades, and the annular plates are arranged in the openings of the single-group blades;
the blade positioning disk consists of an outer blade positioning disk and an inner blade positioning disk, the inner blade positioning disk is arranged at two sides of the middle part of the impeller hub, the outer blade positioning disk is arranged at two ends of the impeller hub, and positioning grooves which are consistent with the sizes, the numbers and the shapes of the short sides of a single group of blades and are in a divergent shape with the circle center of the blade positioning disk are arranged on the blade positioning disk;
a single group of blades penetrate through the positioning grooves of the outer blade positioning disc and enter between the outer blade positioning disc and the inner blade positioning disc, one short edge of each single blade is embedded into the positioning grooves of the inner blade positioning disc at the two sides of the middle part of the impeller hub, the other short edge of each single blade is embedded into the positioning grooves of the outer blade positioning disc, and the blades can occupy accurate positions on the impeller hub through the positioning grooves;
the annular plates are of three-segment segmented construction and are disposed in the openings between each of the individual sets of blades.
Compared with the prior art, the invention has the advantages that:
1) the uniformity and the welding quality of the spatial position precision of the blade relative to the hub and the size of the welding seam are ensured, and the structural strength of the impeller is improved.
2) Effectively reduces the generation of stress concentration in the welding process.
3) The key technical problems that the performance of a large-scale water ring vacuum pump is seriously influenced by blade deformation, fracture, blade position angle deviation, different distances and the like during welding of a large-scale impeller are solved.
Drawings
FIG. 1 is a schematic view of a welding apparatus according to the present invention;
FIG. 2 is a block diagram of the impeller of the present invention;
FIG. 3 is a schematic view of the blade positioning plate and impeller blade assembly of the present invention;
FIG. 4 is a schematic view of the outer disk structure of the vane positioning plate of the present invention.
Wherein: 1-servo motor, 2-planet wheel speed reducer, 3-coupler, 4-roller, 5-impeller, 501-1, 501-2, 501-3-multi-channel annular plate, 502-1, 502-2-impeller blade, 503-impeller hub, 6-blade positioning disc, 601-1, 601-2-blade positioning disc outer disc, 602-1, 602-2-blade positioning disc inner disc, 7-welding tool shaft, 8-mobile supporting table, 9-base, 10-welding robot, 11-welding robot guide rail base.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the welding equipment of the invention comprises a servo motor 1, a planet gear reducer 2, a coupler 3, a roller 4, an impeller 5, a blade positioning disc 6, a welding tool shaft 7, a movable support table 8, a base 9, a welding robot 10 and a welding robot guide rail 11; the servo motor 1 and the planet wheel speed reducer 2 are fixed on the base, and the planet wheel speed reducer 2 is connected with the welding tool shaft 7 through the coupler 3; the roller 4 is axially fixed at one end of the welding tool shaft 7 connected with the rotating device, and the movable supporting table 8 is arranged on an adjusting device which is axially and movably arranged along the welding tool shaft 7.
As shown in fig. 2, the impeller 5 of the present invention is composed of 6 sets of annular plates 501, a single set of blades 502 and an impeller hub 503; each group of annular plates 501 consists of three-section segmented structures 501-1, 501-2 and 501-3; the single set of blades 502 consists of two individual blades 502-1, 502-2 arranged axially; the welding tool shaft 7 is coaxially connected with an impeller hub 503, the peripheries of 17-22 groups of single-group blades 502 are uniformly distributed on the impeller hub 503, openings for mounting the annular plates 501 are formed in the impeller blades, and the annular plates 501 are arranged in the openings of the single-group blades 502.
As shown in FIG. 3, the vane positioning plate 6 of the present invention is composed of vane positioning plate outer plates 601-1, 601-2 and vane positioning plate inner plates 602-1, 602-2; the inner plates 602-1 and 602-2 of the blade positioning plates are arranged at the two sides of the middle part of the impeller hub 503, the outer plates 601-1 and 601-2 of the blade positioning plates are arranged at the two ends of the impeller hub 503, a single group of blades 502 penetrate through the positioning grooves of the outer plates 601-1 and 601-2 of the blade positioning plates to enter between the outer plates 601-1 and 601-2 of the blade positioning plates and the inner plates 602-1 and 602-2 of the blade positioning plates, one short side of the single group of blades 502 is embedded into the positioning grooves of the inner plates 602-1 and 602-2 of the blade positioning plates, and the other short side is embedded into the positioning grooves of the outer plates 601-1 and 601-; after the single group of blades 502 are installed and the axial connection part of the single group of blades and the impeller hub 503 is welded, the next single group of blades 502 are installed and the axial connection part of the single group of blades and the impeller hub 503 is welded; the welding sequence is 180-degree symmetrical welding. Firstly, the axial connecting parts of the single blades 502-1 and 502-2 and the impeller hub 503 are welded, the rear servo motor 1 works, the speed is reduced through the planet gear reducer 2, the welding tool shaft 7 and the impeller hub 503 are driven to rotate for 180 degrees, the single blades 502-1 and 502-2 which are symmetrical for 180 degrees are installed, and the axial connecting parts are welded; after the axial connecting parts of all the single-group blades 502 and the impeller hub 503 are welded, the blade positioning disc outer discs 601-1 and 601-2 are withdrawn, and the blade positioning disc inner discs 602-1 and 602-2 replace the positioning positions of the blade positioning disc outer discs 601-1 and 601-2 to weld the radial connecting parts of all the single-group blades 502 and the impeller hub 503.
As shown in FIG. 4, the outer plates 601-1 and 601-2 and the inner plates 602-1 and 602-2 of the vane positioning plate of the present invention are respectively provided with positioning slots which are milled and have the same size, number and shape with the short side of the single group of vanes 502 and are in a divergent shape with the center of the circle of the vane positioning plate 6; the circumferential mounting position of the single set of blades 502 on the impeller hub 503 is required to be at a maximum distance from the position where the single set of blades 502 is already mounted.
A robot welding process method for an impeller of an oversize water ring vacuum pump comprises the following specific process steps:
1) the welding tool shaft 7 is coaxially connected with an impeller hub 503 and is connected with a planet wheel speed reducer 2 and a servo motor 1 through a coupler 3;
2) the blade positioning disk inner disks 602-1 and 602-2 are respectively and fixedly installed at the two sides of the middle part of the impeller hub 503, and then the blade positioning disk outer disks 601-1 and 601-2 are correspondingly and fixedly installed at the two ends of the impeller hub 503;
3) an impeller comprises 17-22 groups of identical blades, each group of blades comprises 2 identical blades 502-1 and 502-2, and taking the installation and welding of one group of blades as an example, the installation steps of the blades 502-1 are as follows: the blades 502-1 penetrate through the positioning grooves of the outer disk 601-1 of the blade positioning disk and enter between the outer disk 601-1 of the blade positioning disk and the inner disk 602-1 of the blade positioning disk, and the two ends of the blades are embedded into the positioning grooves; the installation steps of the other coaxial blade 502-2 are: the blades 502-2 penetrate through the positioning grooves of the outer plate 601-2 of the blade positioning plate and enter between the outer plate 601-2 of the blade positioning plate and the inner plate 602-2 of the blade positioning plate, two ends of the blades are embedded into the positioning grooves, and the axial connecting part of the single group of blades 502 and the impeller hub 503 is automatically welded by using a welding robot 401;
4) the servo motor 1 works, and the speed is reduced through the planet wheel speed reducer 2 to drive the welding tool shaft 7 and the impeller hub 503 to rotate 180 degrees; installing a single set of 180 degree symmetrical blades 502 and welding the axial connections; the circumferential installation positions of the remaining single group of blades 502 on the impeller hub 503 are required to keep the farthest distance from the position where the single group of blades 502 is installed;
5) according to the step of installing and positioning the single group of blades 502 in the step 1) and the step 3), welding the axial connecting part of the residual single group of blades 502 and the impeller hub 503 by adopting a 180-degree symmetrical welding method;
6) withdrawing the outer plates 601-1 and 601-2 of the blade positioning plates, and replacing the positioning positions of the outer plates 601-1 and 601-2 of the blade positioning plates with the inner plates 602-1 and 602-2 of the blade positioning plates to weld the radial connecting parts of all the single groups of impeller blades 502-1 and 502-2 and the impeller hub 503;
7) installing 6 groups of annular plates 501 in the openings of the single group of blades 502, and completing circumferential welding of the annular plates 501 and the single group of blades 502 by using a welding robot 10;
8) and withdrawing the inner discs 602-1 and 602-2 of the blade positioning disc to complete the processing technology of the high-strength impeller with the reinforced integral welding structure of the multi-channel annular plate of the high-precision positioning blade of the super-huge water ring vacuum pump.
The robot welding process method and the realization equipment for the impeller of the super-huge water ring vacuum pump ensure the space position precision of the impeller relative to the hub, the consistency of the size of a welding seam and the welding quality, improve the structural strength of the impeller, effectively reduce the generation of stress concentration, and solve the key technical problems that the deformation and the fracture of the impeller, the position angle deviation of the impeller, the size of intervals and the like seriously affect the performance of the large water ring vacuum pump when the large impeller is welded. However, any simple modification, equivalent change and modification of the above processing method according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (3)

1. A process method for welding an oversize water ring vacuum pump impeller robot is characterized by comprising the following steps:
1) a welding tool shaft (7) is coaxially connected with an impeller hub (503) and is connected with a planet wheel speed reducer (2) and a servo motor (1) through a coupler (3);
2) respectively and fixedly installing inner plates (602-1 and 602-2) of the blade positioning plates at two sides of the middle part of an impeller hub (503), and then correspondingly and fixedly installing outer plates (601-1 and 601-2) of the blade positioning plates at two ends of the impeller hub (503);
3) an impeller comprises 17-22 groups of identical blades, each group of blades comprises 2 identical blades (502-1, 502-2), and the installation and welding of the blades are exemplified by the following steps of: the blades (502-1) penetrate through the positioning grooves of the outer disk (601-1) of the blade positioning disk and enter between the outer disk (601-1) of the blade positioning disk and the inner disk (602-1) of the blade positioning disk, and the two ends of the blades are embedded into the positioning grooves; the installation steps of the other coaxial blade (502-2) are as follows: the blades (502-2) penetrate through the positioning grooves of the blade positioning disc outer disc (601-2) to enter between the blade positioning disc outer disc (601-2) and the blade positioning disc inner disc (602-2), the two ends of each blade positioning disc outer disc are embedded into the positioning grooves, and the welding robot (401) is used for automatically welding the axial connecting part of the single group of blades (502) and the impeller hub (503);
4) the servo motor (1) works, and the speed is reduced through the planet wheel speed reducer (2) to drive the welding tool shaft (7) and the impeller hub (503) to rotate for 180 degrees; installing a single set of 180 degree symmetrical blades (502) and welding the axial connection; the circumferential installation positions of the other single group of blades (502) on the impeller hub (503) are required to keep the farthest distance from the position of the installed single group of blades (502);
5) according to the step of installing and positioning the single group of blades (502) in the step 1) and the step 3), welding the axial connecting part of the residual single group of blades (502) and the impeller hub (503) by adopting a 180-degree symmetric welding method;
6) withdrawing the outer discs (601-1, 601-2) of the blade positioning discs, and replacing the positioning positions of the outer discs (601-1, 601-2) of the blade positioning discs with the inner discs (602-1, 602-2) of the blade positioning discs to weld the radial connecting parts of all single groups of impeller blades (502-1, 502-2) and an impeller hub (503);
7) installing 6 groups of annular plates (501) in the openings of the single group of blades (502), and completing the circumferential welding of the annular plates (501) and the blades (502) by using a welding robot (10);
8) and (3) withdrawing the inner discs (602-1 and 602-2) of the blade positioning disc to complete the processing technology of the high-strength impeller with the reinforced integral welding structure of the multi-channel annular plate of the high-precision positioning blade of the super-huge water ring vacuum pump.
2. The process method for the robotic welding of the impeller of the oversize water ring vacuum pump according to claim 1, characterized in that: step 5), the single group of blades (502) are installed on the impeller hub (503) one by one; the single group of blades (502) and the impeller hub (503) are welded one by one; and after the axial connecting part of the single group of blades (502) and the impeller hub (503) is welded, the next single group of blades (502) are installed and the axial connecting part of the impeller hub (503) is welded.
3. An apparatus for realizing the robot welding process method of the oversize water ring vacuum pump impeller in claim 1 is characterized in that: the welding robot comprises a servo motor (1), a planet wheel speed reducer (2), a coupler (3), idler wheels (4), an impeller (5), a blade positioning disc (6), a welding tool shaft (7), a movable supporting table (8), a base (9), a welding robot (10) and a welding robot guide rail (11), wherein the servo motor (1) and the planet wheel speed reducer (2) are fixed on the base (9), the planet wheel speed reducer (2) is connected with the welding tool shaft (7) through the coupler (3), the idler wheels (4) are fixedly arranged on the base (9) and play a supporting role for the welding tool shaft (7), and the movable supporting table (8) is arranged on the base (9) and can move along the guide rail;
the impeller (5) consists of 6 groups of annular plates (501), 17-22 groups of single-group blades (502) and an impeller hub (503), each group of annular plates (501) consists of three-section type structures (501-1, 501-2 and 501-3), each group of blades (502) consists of two single blades (502-1 and 502-2) which are axially arranged, a welding tool shaft (7) is coaxially connected with the impeller hub (503), the circumferences of the 17-22 groups of single-group blades (502) are uniformly distributed on the impeller hub (503), and the impeller blades are provided with openings for mounting the annular plates (501);
the blade positioning disk (6) is composed of blade positioning disk outer disks (601-1, 601-2) and blade positioning disk inner disks (602-1, 602-2), the blade positioning disk inner disks (602-1, 602-2) are installed at two sides of the middle part of the impeller hub (503), the blade positioning disk outer disks (601-1, 601-2) are installed at two ends of the impeller hub (503), positioning grooves which are consistent with the size, the number and the shape of the short sides of a single group of blades (502) and are diverged with the circle center of the blade positioning disk (6) are formed in the blade positioning disk (6);
a single group of blades (502) penetrate through positioning grooves of outer plates (601-1, 601-2) of the blade positioning plates to enter between the outer plates (601-1, 601-2) of the blade positioning plates and inner plates (602-1, 602-2) of the blade positioning plates, one short side of each single blade (502-1, 502-2) is embedded into the positioning groove of the inner plate (602-1, 602-2) of the blade positioning plate at the two sides of the middle part of an impeller hub (503), the other short side of each single blade is embedded into the positioning groove of the outer plate (601-1, 601-2) of the blade positioning plate, and the blades can occupy accurate positions on the impeller hub (503) through the positioning grooves;
the annular plate (501) is of a three-segment segmented construction and is disposed in the openings between each set of single set of blades (502).
CN202011132657.5A 2020-10-21 2020-10-21 Process method for robot welding of super-huge type water ring vacuum pump impeller and implementation equipment Active CN112318015B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406552A (en) * 2022-03-04 2022-04-29 中国石油大学(华东) Anti-fatigue welding manufacturing method for rotary drum of rotary drum type filter press
CN114523254A (en) * 2022-04-22 2022-05-24 西安朋邦工贸有限公司 Positioning fixture and positioning method for welding turbine guide blade

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CN114523254B (en) * 2022-04-22 2022-08-23 西安朋邦工贸有限公司 Positioning fixture and positioning method for welding turbine guide blade

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