Machine welding equipment for pressure steel pipe

Abstract

The invention is suitable for the technical field of welding equipment, and provides pressure steel pipe machine welding equipment which comprises an equipment base, a welding robot, a positioning frame and a moving mechanism and further comprises drive control mechanisms and linkage mechanisms, the drive control mechanisms are symmetrically distributed on the left side and the right side of the equipment base in pairs, and the linkage mechanisms are distributed on the left side and the right side of a clamping mechanism; the clamping mechanism is matched with the moving mechanism and the drive control mechanism to achieve double-point clamping and fixing of a single pressure steel pipe, so that the coaxiality of the two pressure steel pipes can be guaranteed, butt joint deviation is reduced, position deviation caused by welding vibration can be limited, welding seams are uniform and attractive, the welding precision is improved, and the welding quality is improved. And the distance between the two positioning frames can be changed by changing the fixing state of the drive control mechanism and the equipment base, so that the clamping position of the clamping mechanism on the pressure steel pipe is changed to adjust the clamping position, the adaptability of the equipment to the pressure steel pipes of different specifications is remarkably improved, and diversified welding requirements are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding equipment, and particularly relates to a machine welding equipment for penstocks. Background Art

[0002] A penstock, that is, a pressure pipe, or also called a water pressure steel pipe, is a steel pipeline used to convey extremely high water pressure water flow. The inside of the penstock belongs to a closed environment, and the intensity of the water flow can be controlled by the opening and closing of a water gate or a fence. Therefore, the welding quality of the penstock directly affects the safety and reliability of the system.

[0003] The existing machine welding equipment for penstocks includes a workbench, a welding robot, a first connecting plate, a second connecting plate, a limiting pipe, a motor, a first gear, a second gear, a clamping groove and a cylinder; during the welding process, the motor is started to drive the first gear to rotate, and this action will drive the second gear to rotate synchronously, thereby realizing the rotation of the limiting pipe. Due to the stable clamping connection between the clamping groove and the cylinder, a pair of limiting pipes will rotate simultaneously, and the limiting pipe will drive the penstock therein to rotate synchronously, realizing all-round welding, greatly improving the welding convenience and efficiency.

[0004] Due to the requirement of the sealing performance of the penstock, it is necessary to ensure the coaxiality when two penstocks are butted. However, the existing welding equipment can only complete the single-point fixation of a single steel pipe through the limiting pipe, and the single-point fixation method is extremely easy to cause the steel pipe to tilt and other phenomena, resulting in different coaxialities of the two steel pipes, and it is extremely easy to appear problems such as weld misalignment and poor fusion, seriously affecting the welding strength of the steel pipe.

[0005] Therefore, in view of the above status quo, there is an urgent need to develop a machine welding equipment for penstocks to overcome the deficiencies in current practical applications. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the present invention is to provide a machine welding equipment for penstocks to solve the problems in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A machine welding equipment for penstocks includes an equipment base, a welding robot and a positioning frame. The welding robot is arranged at the rear side of the equipment base. The positioning frames are symmetrically arranged in pairs on the left and right sides of the equipment base. A plurality of the positioning frames are slidably installed on the equipment base. Moving mechanisms are installed on the left and right sides of the equipment base respectively, and the output ends of the moving mechanisms are respectively connected to two positioning frames on the same side of the equipment base. A plurality of chutes for installing a clamping mechanism are circumferentially distributed on one side of the positioning frame. The machine welding equipment for penstocks further includes:

[0009] Drive and control mechanism, the drive and control mechanisms are symmetrically distributed in pairs on the left and right sides of the equipment base. Two drive and control mechanisms on the same side of the equipment base are both distributed between two positioning frames on the same side. All four drive and control mechanisms are slidably installed on the equipment base, and one end of the drive and control mechanism is slidably matched with one end of the clamping mechanism;

[0010] Linkage mechanism, the linkage mechanism is distributed on the left and right sides of the clamping mechanism, and the linkage mechanism is intermittently matched with the drive and control mechanism; when the drive and control mechanism is fixed on the equipment base by stretching, the clamping mechanism drives the linkage mechanism to move and come into contact with the drive and control mechanism. At this time, the linkage mechanism does not drive the drive and control mechanism to move synchronously;

[0011] When the drive and control mechanism releases the fixed state with the equipment base by contracting, the clamping mechanism drives the linkage mechanism to move and come into contact with the drive and control mechanism. At this time, the linkage mechanism can drive the drive and control mechanism to move with the clamping mechanism.

[0012] As a further technical solution of the present invention, the drive and control mechanism includes a drive and control frame, a hydraulic component and a drive and control roller. The drive and control frames are symmetrically distributed in pairs on the left and right sides of the equipment base, and two drive and control frames on the same side are both located between two positioning frames on the same side. The drive and control frame is slidably installed on the equipment base. A hydraulic component is installed on the drive and control frame. The output end of the hydraulic component penetrates the drive and control frame and is intermittently in contact with the equipment base. Drive and control rollers are circumferentially distributed on one side of the drive and control frame. A spiral guide groove for slidably matching with the clamping mechanism is provided on the drive and control roller, and an arc-shaped block for intermittently matching with the linkage mechanism is fixed on the outer wall of the drive and control roller.

[0013] As a further technical solution of the present invention, the clamping mechanism includes a drive component, a sliding seat and a clamping component. The drive components are circumferentially distributed on the positioning frame and are slidably matched with the spiral guide groove. Linkage mechanisms for intermittently matching with the arc-shaped blocks are fixed at both the left and right ends of the drive component. One end of the drive component is connected to a sliding seat slidably installed in the chute. A clamping component for clamping and fixing the penstock is installed on the sliding seat.

[0014] As a further technical solution of the present invention, the drive component includes a sleeve, a gear, a rack and a guide post. The sleeves are circumferentially distributed on the positioning frame, and the outer wall of the sleeve is rotatably connected to the positioning frame. A guide post for slidably matching with the spiral guide groove is fixed on the side wall of the sleeve. Linkage mechanisms are fixed at both ends of the sleeve. A gear is fixed on the outer wall of one end of the sleeve, and the gear meshes with a rack fixed on the sliding seat.

[0015] As a further technical solution of the present invention, one end of the drive and control roller penetrates the sleeve, and the inner diameter of the sleeve is larger than the outer diameter of the arc-shaped block.

[0016] As a further technical solution of the present invention, the clamping assembly includes a fixing frame, a sliding column, a clamping plate and a first spring. The fixing frame is slidably installed in the chute. A sliding column is horizontally slidably installed on the fixing frame. A first spring is sleeved on the outer wall of the sliding column. One end of the sliding column is fixed with a clamping plate for clamping and fixing the outer wall of the penstock. Two ends of the first spring are respectively connected to the fixing frame and the clamping plate.

[0017] As a further technical solution of the present invention, the linkage mechanism includes a sleeve, a linkage baffle and a second spring. The sleeves are respectively fixed at both ends of the sleeve and communicate with the sleeve. Linkage baffles are circumferentially distributed on one side of the sleeve. One end of the linkage baffle is rotatably connected to the inner wall of one side of the sleeve. The inner diameter of the linkage baffle is smaller than the outer diameter of the arc-shaped baffle and larger than the outer diameter of the driving and controlling roller. A second spring is installed between one side of the linkage baffle and the inner wall of the sleeve.

[0018] As a further technical solution of the present invention, the moving mechanism includes a moving motor, a transmission structure and a bidirectional lead screw. The moving motor is installed in the equipment seat. The output end of the moving motor is connected to one end of the transmission structure. The other end of the transmission structure extends outside the equipment seat and is connected to the bidirectional lead screw. The bidirectional lead screw is rotatably installed on the equipment seat. Two positioning frames on the same side of the equipment seat are respectively threadedly connected to both ends of the bidirectional lead screw.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Through the cooperation with the moving mechanism and the driving and controlling mechanism, the clamping mechanism can achieve double-point clamping and fixing of a single penstock, which can not only ensure the coaxiality of two penstocks, reduce the butt joint deviation between the two penstocks, improve the welding quality of the penstock, but also well limit the penstock during the welding process, reduce the welding position deviation caused by welding vibration, make the formed weld more uniform and beautiful, effectively improve the welding precision of the penstock, and meet the requirements of high-precision welding;

[0021] When the clamping position needs to be adjusted, the driving and controlling mechanism can release the fixed state with the equipment seat and drive the driving and controlling roller to move synchronously with the clamping mechanism through the linkage mechanism. This not only ensures that the initial state of the clamping mechanism on the positioning frame will not change, facilitating its effective clamping and fixing of the penstock, but also can change the distance between the two positioning frames, thereby changing the clamping position of the clamping mechanism on the two positioning frames for the penstock, enabling the equipment to automatically adjust the clamping position for the penstock according to the specifications of the penstock, significantly improving the adaptability of the equipment to penstocks of different specifications, and meeting the diversified welding requirements.

[0022] To more clearly elaborate on the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the pressure steel pipe machine welding equipment provided by an embodiment of the present invention.

[0024] Figure 2 It is a front view of the structure of the pressure steel pipe machine welding equipment provided by an embodiment of the present invention.

[0025] Figure 3 It is Figure 1 a schematic structural diagram of the positioning frame, driving mechanism, clamping mechanism, and linkage mechanism provided on one side in

[0026] Figure 4 It is Figure 3 a schematic structural diagram of a single positioning frame, driving mechanism, clamping mechanism, and linkage mechanism in

[0027] Figure 5 It is Figure 4 a side view of the structure of a single positioning frame, driving mechanism, clamping mechanism, and linkage mechanism in

[0028] Figure 6 It is Figure 4 a schematic structural diagram of the clamping mechanism and the linkage group mechanism in

[0029] Figure 7 It is Figure 6 a side view of the structure of the clamping mechanism and the linkage mechanism in

[0030] Figure 8 It is Figure 7 a schematic structural diagram of the driving and controlling roller in

[0031] Figure 9 It is Figure 4 a schematic structural diagram of the linkage mechanism and the driving assembly in

[0032] Reference numerals: 100 - equipment base, 200 - welding robot, 300 - positioning frame, 400 - driving and controlling mechanism, 410 - driving and controlling frame, 420 - hydraulic component, 430 - driving and controlling roller, 440 - spiral guide groove, 450 - arc-shaped stopper, 500 - clamping mechanism, 510 - driving assembly, 511 - sleeve, 512 - gear, 513 - rack, 514 - guide post, 520 - sliding seat, 530 - clamping assembly, 531 - fixed frame, 532 - sliding column, 533 - clamping plate, 534 - first spring, 600 - linkage mechanism, 610 - sleeve, 620 - linkage baffle, 630 - second spring, 700 - bidirectional lead screw. Detailed Embodiments

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0035] As Figures 1 to 9 shown, as a kind of pressure steel pipe machine welding equipment provided by an embodiment of the present invention, it includes an equipment base 100, a welding robot 200 and a positioning frame 300. The welding robot 200 is arranged at the rear side of the equipment base 100. The positioning frames 300 are symmetrically arranged in pairs on the left and right sides of the equipment base 100. A plurality of the positioning frames 300 are all slidably installed on the equipment base 100. Moving mechanisms are installed on both the left and right sides of the equipment base 100. The output ends of the moving mechanisms are respectively connected to two positioning frames 300 on the same side of the equipment base 100. A chute for installing a clamping mechanism 500 is circumferentially distributed on one side of the positioning frame 300. It also includes:

[0036] A driving and controlling mechanism 400, the driving and controlling mechanisms 400 are symmetrically distributed in pairs on the left and right sides of the equipment base 100. Two driving and controlling mechanisms 400 on the same side of the equipment base 100 are all distributed between two positioning frames 300 on the same side as them. The four driving and controlling mechanisms 400 are all slidably installed on the equipment base 100. One end of the driving and controlling mechanism 400 is slidably matched with one end of the clamping mechanism 500;

[0037] A linkage mechanism 600, the linkage mechanism 600 is distributed on the left and right sides of the clamping mechanism 500. The linkage mechanism 600 is intermittently matched with the driving and controlling mechanism 400.

[0038] In the initial state, the driving and controlling mechanism 400 is fixed on the equipment base 100 by stretching. A single moving mechanism drives two positioning frames 300 to move towards each other. The two positioning frames 300 drive their respective clamping mechanisms 500 to move towards each other. The clamping mechanism 500 can complete the clamping and fixing of the pressure steel pipe located in the middle of the positioning frame 300 by moving towards each other and cooperating with the driving and controlling mechanism 400, so as to realize the double-point fixing of a single pressure steel pipe. In this way, not only can the coaxiality of the two pressure steel pipes be ensured, the butt joint deviation of the two pressure steel pipes be reduced, and the welding quality of the pressure steel pipe be improved, but also the pressure steel pipe during the welding process can be well restricted, the welding position deviation caused by welding vibration be reduced, and the formed weld seam be more uniform and beautiful, effectively improving the welding precision of the pressure steel pipe and meeting the requirements of high-precision welding; at the same time, the clamping mechanism 500 drives the linkage mechanism 600 to move and contacts the driving and controlling mechanism 400, but the linkage mechanism 600 does not drive the driving and controlling mechanism 400 to move synchronously;

[0039] When it is necessary to change the clamping position of a single steel pipe, the driving and controlling mechanism 400 releases the fixed state with the equipment base 100 by contracting, so that it can freely slide on the equipment base 100. At this time, the moving mechanism drives the two positioning frames 300 to approach or move away from each other. The two positioning frames 300 drive their respective clamping mechanisms 500 to approach or move away from each other. The clamping mechanism 500 drives the linkage mechanism 600 to move and makes it contact with the driving and controlling mechanism 400. The linkage mechanism 600 can drive the driving and controlling mechanism 400 to move synchronously by moving and contacting the driving and controlling mechanism 400, so that the driving and controlling mechanism 400 can move synchronously with the clamping mechanism 500. This not only ensures that the initial state of the clamping mechanism 500 on the positioning frame 300 will not change, facilitating its effective clamping and fixing of the penstock, but also can change the distance between the two positioning frames 300, thereby changing the clamping position of the clamping mechanisms 500 on the two positioning frames 300 for the penstock, enabling the equipment to automatically adjust the clamping position according to the specifications of the penstock, significantly improving the adaptability of the equipment to penstocks of different specifications and meeting diverse welding requirements.

[0040] As Figures 2 to 8 shown, as a preferred embodiment of the present invention, the driving and controlling mechanism 400 includes a driving and controlling frame 410, a hydraulic component 420, and a driving and controlling roller 430. The driving and controlling frames 410 are symmetrically distributed in pairs on the left and right sides of the equipment base 100, and the two driving and controlling frames 410 on the same side are both located between the two positioning frames 300 on the same side. The driving and controlling frame 410 is slidably installed on the equipment base 100. A hydraulic component 420 is installed on the driving and controlling frame 410. The output end of the hydraulic component 420 penetrates the driving and controlling frame 410 and intermittently contacts the equipment base 100. The driving and controlling roller 430 is circumferentially distributed on one side of the driving and controlling frame 410. A spiral guide groove 440 for slidably cooperating with the clamping mechanism 500 is formed on the driving and controlling roller 430, and an arc-shaped stop block 450 for intermittently cooperating with the linkage mechanism 600 is fixed on the outer wall of the driving and controlling roller 430.

[0041] In the initial state, the hydraulic component 420 can contact the equipment base 100 by stretching and press the driving and controlling frame 410 against the equipment base 100, thereby fixing the driving and controlling frame 410 and the driving and controlling roller 430 thereon, making the two stationary relative to the equipment base 100. When the clamping mechanism 500 moves, the stationary driving and controlling roller 430 can drive the moving clamping mechanism 500 to rotate through the spiral guide groove 440. The clamping mechanism 500 can complete the clamping and fixing of the penstock located in the middle of the positioning frame 300 by rotating, ensuring the stability of the penstock during the welding process, improving the welding efficiency and quality of the penstock. At the same time, the clamping mechanism 500 drives the linkage mechanism 600 to move and makes it contact the arc-shaped block 450. Since the arc-shaped block 450 is also stationary relative to the equipment base 100, the linkage mechanism 600 cannot drive it;

[0042] When it is necessary to change the clamping position of the penstock, the hydraulic component 420 separates from the equipment base 100 by contracting, so that the driving and controlling frame 410 can slide freely on the equipment base 100. At this time, when the clamping mechanism 500 drives the linkage mechanism 600 to move, the linkage mechanism 600 can drive the driving and controlling roller 430 to move synchronously through the arc-shaped block 450, so that the driving and controlling roller 430 and the spiral guide groove 440 thereon move synchronously with the clamping mechanism 500. This not only ensures that the initial state of the clamping mechanism 500 on the positioning frame 300 will not change, that is, ensures that the clamping mechanism 500 will not rotate, facilitating its effective clamping and fixing of the penstock, but also can change the distance between the two positioning frames 300, thereby changing the clamping position of the clamping mechanism 500 on the two positioning frames 300 for the penstock, enabling the equipment to automatically adjust the clamping position according to the specifications of the penstock, significantly improving the adaptability of the equipment to penstocks of different specifications and meeting diverse welding requirements.

[0043] In a preferred embodiment, the hydraulic component 420 preferably adopts a hydraulic telescopic structure composed of a hydraulic cylinder and a hydraulic rod, and the equipment base 100 is provided with a track groove for the positioning frame 300 and the driving and controlling frame 410 to slide. There is a certain buffer space between the bottom of the driving and controlling frame 410 and the track groove, which can facilitate the hydraulic component 420 to press the driving and controlling frame 410 against the track groove by stretching;

[0044] The positioning frame 300 and the driving and controlling frame 410 are concentric, and through holes for the penstock to pass through are provided in the middle of the positioning frame 300 and the driving and controlling frame 410.

[0045] Such as Figures 2 to 8As shown, as a preferred embodiment of the present invention, the clamping mechanism 500 includes a driving assembly 510, a slide 520 and a clamping assembly 530. The driving assembly 510 is circumferentially distributed on the positioning frame 300 and slidably cooperates with the spiral guide groove 440. The left and right ends of the driving assembly 510 are fixed with a linkage mechanism 600 that intermittently cooperates with the arc-shaped stop block 450. One end of the driving assembly 510 is connected to the slide 520 slidably installed in the slide groove, and the slide 520 is installed with a clamping assembly 530 for clamping and fixing the pressure steel pipe.

[0046] The driving assembly 510 includes a sleeve 511, a gear 512, a rack 513 and a guide column 514. The sleeve 511 is circumferentially distributed on the positioning frame 300, and the outer wall of the sleeve 511 is rotatably connected to the positioning frame 300. The guide column 514 that slides with the spiral guide groove 440 is fixed on the side wall of the sleeve 511. The linkage mechanism 600 is fixed at both ends of the sleeve 511. The gear 512 is fixed on the outer wall of one end of the sleeve 511, and the gear 512 is meshed with the rack 513 fixed on the slide seat 520.

[0047] One end of the driving roller 430 passes through the sleeve 511, and the inner diameter of the sleeve 511 is larger than the outer diameter of the arc-shaped stop block 450. In this way, when the linkage mechanism 600 is not in contact with the arc-shaped stop block 450, the sleeve 511 can be effectively moved outside the arc-shaped stop block 450, thereby ensuring that the clamping mechanism 500 can effectively and stably clamp and fix the pressure steel pipe, thereby improving the welding efficiency and welding quality of the pressure steel pipe.

[0048] When the drive control frame 410 is fixedly connected to the equipment base 100, the moving mechanism drives the positioning frame 300 to move, the positioning frame 300 drives the sleeve 511 to move, the sleeve 511 drives the linkage mechanism 600 and the guide column 514 to move, and the linkage mechanism 600 cannot move the arc-shaped stopper 450 in a static state at this time. The guide column 514 can drive the sleeve 511 to rotate on the positioning frame 300 by moving and cooperating with the spiral guide groove 440, and the sleeve 511 drives the gear 512 to rotate, and the gear 512 drives the slide 520 to move in the slide groove through the rack 513, and the slide 520 drives the clamping assembly 530 thereon to move in the direction close to the pressure steel pipe, so that the clamping assembly 530 can complete the clamping and fixing of the pressure steel pipe;

[0049] When the driving and controlling frame 410 is in a free state, the moving mechanism drives the positioning frame 300 to move, the positioning frame 300 drives the sleeve 511 to move, the sleeve 511 drives the linkage mechanism 600 and the guide post 514 to move, and the linkage mechanism 600 drives the driving and controlling roller 430 to move synchronously with the sleeve 511 through the arc-shaped stopper 450, so that the arc-shaped guide groove on the driving and controlling roller 430 moves synchronously with the guide post 514. The arc-shaped guide groove and the guide post 514 in the synchronous moving state will not cause the rotation of the driving and controlling roller 430, so that the sliding seat 520 and the clamping assembly 530 thereon move synchronously with the positioning frame 300 in the initial state, thereby changing the clamping position of the clamping assembly 530 on the penstock.

[0050] In a preferred embodiment, balls or rollers can be installed at the mating end of the guide post 514 and the spiral guide groove 440 to reduce the friction between the two.

[0051] As Figures 2 to 7 shown, as a preferred embodiment of the present invention, the clamping assembly 530 includes a fixed frame 531, a sliding column 532, a clamping plate 533 and a first spring 534. The fixed frame 531 is slidably installed in the chute. A sliding column 532 is horizontally slidably installed on the fixed frame 531. A first spring 534 is sleeved on the outer wall of the sliding column 532. One end of the sliding column 532 is fixed with a clamping plate 533 for clamping and fixing the outer wall of the penstock. Both ends of the first spring 534 are connected to the fixed frame 531 and the clamping plate 533 respectively;

[0052] When the sliding seat 520 drives the fixed frame 531 to move towards the penstock, the fixed frame 531 drives the sliding column 532 to move, the sliding column 532 drives the clamping plate 533 to move, and the clamping plate 533 can complete the clamping and fixing of the penstock by moving. The first spring 534, by cooperating with the fixed frame 531, can not only form a flexible contact between the clamping plate 533 and the outer wall of the penstock, so that it can adapt to the steel pipe surfaces with different roundness errors, but also absorb the vibration energy generated by welding through its own damping effect, reducing the transmission of vibration to the positioning frame 300 and the equipment seat 100.

[0053] In a preferred embodiment, the clamping plate 533 preferably adopts an arc-shaped plate structure, and a buffer rubber pad for buffering and increasing the friction with the steel pipe is installed on the inner side of the clamping plate 533.

[0054] As Figures 2 to 9As shown, as a preferred embodiment of the present invention, the linkage mechanism 600 includes a sleeve 610, a linkage baffle 620 and a spring 630. The sleeve 610 is respectively fixed on both ends of the sleeve 511 and is connected to the sleeve 511. A linkage baffle 620 is circumferentially distributed on one side of the sleeve 610. One end of the linkage baffle 620 is rotatably connected to the inner wall of one side of the sleeve 610. The inner diameter of the linkage baffle 620 is smaller than the outer diameter of the arc-shaped block 450 and larger than the outer diameter of the drive roller 430. A spring 630 is installed between one side of the linkage baffle 620 and the inner wall of the sleeve 610.

[0055] When the drive control frame 410 is fixedly connected to the equipment base 100, the sleeve 511 drives the sleeve 610 and the guide column 514 to move at the same time, and the sleeve 610 drives the linkage baffle 620 to move. At this time, the elastic force of the spring 2 630 given to the linkage baffle 620 is smaller than the resistance applied by the equipment base 100 to the arc block 450, so that the linkage baffle 620 only contacts the arc block 450 and cannot drive the drive control roller 430 through the arc block 450, so that the clamping assembly 530 can complete the clamping and fixing of the pressure steel pipe;

[0056] When the drive control frame 410 is in a free state, the sleeve 511 drives the sleeve 610 and the guide column 514 to move at the same time, and the sleeve 610 drives the linkage baffle 620 to move. At this time, the elastic force given to the linkage baffle 620 by the spring 2 630 is greater than the resistance of the arc-shaped block 450. The spring 2 630 can drive the linkage baffle 620 to move through the linkage baffle 620, and the linkage baffle 620 drives the drive control roller 430 to move synchronously, so that the slide 520 and the clamping assembly 530 thereon move synchronously with the positioning frame 300 in the initial state, thereby changing the clamping position of the clamping assembly 530 on the pressure steel pipe.

[0057] In a preferred embodiment, the arc-shaped stopper 450 preferably adopts an annular block structure with a notch, and the position of the notch can fully and effectively avoid the spiral guide groove 440, so that the guide column 514 can effectively and continuously slide in the spiral guide groove 440;

[0058] The second spring 630 is preferably made of a metal material with a high elastic coefficient to ensure that the elastic force of the second spring 630 can overcome the external resistance of the arc block 450 in a free state, so that the linkage baffle 620 can drive the drive control roller 430 and the drive control frame 410 to move synchronously with the positioning frame 300 through the arc block 450.

[0059] like Figures 1 to 5As shown, as a preferred embodiment of the present invention, the moving mechanism includes a moving motor, a transmission structure, and a bidirectional lead screw 700. The moving motor is installed in the equipment base 100. The output end of the moving motor is connected to one end of the transmission structure. The other end of the transmission structure extends outside the equipment base 100 and is connected to the bidirectional lead screw 700. The bidirectional lead screw 700 is rotatably installed on the equipment base 100. The two positioning brackets 300 on the same side of the equipment base 100 are respectively threadedly connected to both ends of the bidirectional lead screw 700.

[0060] The moving motor drives the bidirectional lead screw 700 to rotate through the transmission mechanism. By rotating, the bidirectional lead screw 700 can drive the two positioning brackets 300 on the same side of the equipment base 100 to move towards each other or away from each other, thereby completing the clamping of the penstock and adjusting the clamping position of the penstock, improving the welding efficiency and welding quality of the equipment, and at the same time improving the practicability and convenience of the equipment.

[0061] In a preferred embodiment, the transmission structure preferably adopts a transmission structure composed of a synchronous belt and a synchronous pulley. The transmission structure and the moving motor both belong to conventional technologies in the art, so they are not shown in the drawings.

[0062] The working principle of the present invention is:

[0063] In the initial state, the hydraulic component 420 can contact the equipment base 100 by stretching and press the driving and control frame 410 against the equipment base 100, so as to fix the driving and control frame 410 and the driving and control roller 430 thereon, making the two stationary relative to the equipment base 100. The moving motor drives the bidirectional lead screw 700 to rotate through the transmission mechanism. The bidirectional lead screw 700 can drive the two positioning frames 300 on the same side of the equipment base 100 to move towards each other by rotating. The two positioning frames 300 drive their respective sleeves 511 to move. The sleeve 511 drives the sleeve 610 and the guide post 514 to move at the same time. The sleeve 610 drives the linkage baffle 620 to move. At this time, the elastic force given by the second spring 630 to the linkage baffle 620 is less than the resistance exerted by the equipment base 100 on the arc-shaped block 450, so that the linkage baffle 620 will only contact the arc-shaped block 450 and cannot drive the driving and control roller 430 through the arc-shaped block 450. The guide post 514 can drive the sleeve 511 to rotate on the positioning frame 300 by moving and cooperating with the spiral guide groove 440. The sleeve 511 drives the gear 512 to rotate. The gear 512 drives the slide block 520 to move in the chute through the rack 513. The slide block 520 drives the fixing frame 531 to move towards the penstock. The fixing frame 531 drives the slide post 532 to move. The slide post 532 drives the clamping plate 533 to move. The clamping plate 533 can complete the clamping and fixing of the penstock by moving, so as to realize the double-point fixing of a single penstock. This can not only ensure the coaxiality of the two penstocks, reduce the butt joint deviation between the two penstocks, improve the welding quality of the penstock, but also limit the penstock during the welding process, reduce the welding position deviation caused by welding vibration, make the formed weld more uniform and beautiful, effectively improve the welding precision of the penstock, and meet the requirements of high-precision welding;

[0064] When it is necessary to change the clamping position of a single steel pipe, the hydraulic component 420 separates from the equipment base 100 by shrinking, enabling the driving and control frame 410 to slide freely on the equipment base 100. The moving motor drives the bidirectional lead screw 700 to rotate through a transmission mechanism. By rotating, the bidirectional lead screw 700 can drive two positioning frames 300 on the same side of the equipment base 100 to move away from or close to each other. The two positioning frames 300 drive their respective sleeves 511 to move, and the sleeves 511 simultaneously drive the casing 610 and the guide posts 514 to move. The casing 610 drives the linkage baffle 620 to move. At this time, the elastic force imparted by the second spring 630 to the linkage baffle 620 is greater than the resistance received by the arc-shaped block 450. The second spring 630 can drive the linkage baffle 620 to move through the linkage baffle 620. The linkage baffle 620 drives the driving and control roller 430 to move synchronously, enabling the sliding seat 520 and the clamping assembly 530 thereon to move synchronously with the positioning frame 300 in the initial state, facilitating the effective clamping and fixing of the penstock, and also changing the distance between the two positioning frames 300, thereby changing the clamping position of the clamping mechanism 500 on the two positioning frames 300 for the penstock, enabling the equipment to automatically adjust the clamping position for the penstock according to the specifications of the penstock, significantly improving the adaptability of the equipment to penstocks of different specifications, and meeting diverse welding requirements;

[0065] The above is the working principle of the machine welding equipment for the penstock.

Claims

1. A pressure steel pipe machine welding equipment, comprising an equipment seat, a welding robot and a positioning frame, wherein the welding robot is arranged at the rear side of the equipment seat, the positioning frames are symmetrically arranged on the left and right sides of the equipment seat, and a plurality of the positioning frames are slidably installed on the equipment seat, and a moving mechanism is installed on the left and right sides of the equipment seat, and the output end of the moving mechanism is respectively connected to the two positioning frames located on the same side of the equipment seat, and a slide groove for installing a clamping mechanism is circumferentially distributed on one side of the positioning frame, characterized in that: Also includes: The drive control mechanisms are symmetrically distributed in pairs on the left and right sides of the equipment seat, and the two drive control mechanisms on the same side of the equipment seat are distributed between the two positioning frames on the same side. The four drive control mechanisms are slidably mounted on the equipment seat, and one end of the drive control mechanism is slidably matched with one end of the clamping mechanism; The linkage mechanism is distributed on the left and right sides of the clamping mechanism, and the linkage mechanism cooperates with the drive control mechanism intermittently; when the drive control mechanism is fixed on the equipment seat by stretching, the clamping mechanism drives the linkage mechanism to move and comes into contact with the drive control mechanism, and at this time the linkage mechanism does not drive the drive control mechanism to move synchronously; When the driving and controlling mechanism releases the fixed state with the equipment seat by contraction, the clamping mechanism drives the linkage mechanism to move and come into contact with the driving and controlling mechanism. At this time, the linkage mechanism can drive the driving and controlling mechanism to move with the clamping mechanism.

2. The pressure steel pipe machine welding equipment according to claim 1, characterized in that: The drive control mechanism includes a drive control frame, a hydraulic component and a drive control roller. The drive control frames are symmetrically distributed on the left and right sides of the equipment seat, and the two drive control frames on the same side are located between the two positioning frames on the same side. The drive control frame is slidably installed on the equipment seat. The drive control frame is equipped with a hydraulic component. The output end of the hydraulic component passes through the drive control frame and is intermittently in contact with the equipment seat. Drive control rollers are circumferentially distributed on one side of the drive control frame. The drive control rollers are provided with spiral guide grooves that slidably cooperate with the clamping mechanism, and an arc-shaped stopper that intermittently cooperates with the linkage mechanism is fixed on the outer wall of the drive control roller.

3. The pressure steel pipe machine welding equipment according to claim 2, characterized in that: The clamping mechanism includes a driving assembly, a sliding seat and a clamping assembly. The driving assembly is circumferentially distributed on the positioning frame and slidingly cooperates with the spiral guide groove. Both left and right ends of the driving assembly are fixed with linkage mechanisms that intermittently cooperate with the arc-shaped block. One end of the driving assembly is connected to a sliding seat slidably installed in the sliding groove, and a clamping assembly for clamping and fixing the pressure steel pipe is installed on the sliding seat.

4. The pressure steel pipe machine welding equipment according to claim 3 is characterized in that: The driving assembly includes a sleeve, a gear, a rack and a guide column. The sleeve is circumferentially distributed on the positioning frame, and the outer wall of the sleeve is rotatably connected to the positioning frame. A guide column that slides with the spiral guide groove is fixed on the side wall of the sleeve. Linkage mechanisms are fixed at both ends of the sleeve. A gear is fixed on the outer wall of one end of the sleeve, and the gear is meshed with the rack fixed on the slide.

5. The pressure steel pipe machine welding equipment according to claim 4, characterized in that: One end of the driving roller passes through a sleeve, and the inner diameter of the sleeve is greater than the outer diameter of the arc-shaped stopper.

6. The pressure steel pipe machine welding equipment according to claim 3, characterized in that: The clamping assembly includes a fixed frame, a sliding column, a clamping plate and a spring. The fixed frame is slidably installed in a sliding groove. A sliding column is horizontally slidably installed on the fixed frame. A spring is sleeved on the outer wall of the sliding column. A clamping plate for clamping and fixing the outer wall of the pressure steel pipe is fixed at one end of the sliding column. The two ends of the spring are respectively connected to the fixed frame and the clamping plate.

7. The pressure steel pipe machine welding equipment according to claim 4, characterized in that: The linkage mechanism includes a sleeve, a linkage baffle and a second spring. The sleeve is respectively fixed on both ends of the sleeve and is connected to the sleeve. A linkage baffle is circumferentially distributed on one side of the sleeve. One end of the linkage baffle is rotatably connected to the inner wall of one side of the sleeve. The inner diameter of the linkage baffle is smaller than the outer diameter of the arc-shaped baffle and larger than the outer diameter of the drive control roller. A second spring is installed between one side of the linkage baffle and the inner wall of the sleeve.

8. The pressure steel pipe machine welding equipment according to claim 1, characterized in that: The moving mechanism includes a moving motor, a transmission structure and a bidirectional lead screw. The moving motor is installed in the equipment base, the output end of the moving motor is connected to one end of the transmission structure, the other end of the transmission structure extends outside the equipment base and is connected to the bidirectional lead screw, the bidirectional lead screw is rotatably installed on the equipment base, and two positioning frames located on the same side of the equipment base are respectively threadedly connected to the two ends of the bidirectional lead screw.

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