Shearing machine shell welding rotating device

Abstract

The invention is suitable for the technical field of welding equipment, and provides a shearing machine shell welding rotating device which comprises a supporting frame, a lifting plate is slidably connected to one side of the supporting frame, and fixing plates are symmetrically fixed to the two ends of the lifting plate. According to the scheme, the lifting mechanism and the transposition mechanism are arranged, the dead weight of the shell is decomposed into multiple sections of rope traction force through cooperative load reduction of a movable pulley block and balancing weights in the lifting mechanism, the actual load of the lifting mechanism is greatly reduced, the balancing weights are arranged on the two sides of a lifting plate, the gravity of the shell part is counteracted through the lever principle, and the weight of the shell part is reduced. The driving energy consumption is further reduced, mechanical fatigue is restrained, a worm and gear transmission structure in the indexing mechanism is combined to directly drive the shell to rotate around the vertical shaft, secondary clamping or manual intervention is not needed, the rotation angle can be automatically locked through the inherent self-locking characteristic of a worm and gear, the position of the shell is still kept fixed even if the machine is shut down or powered off, and the service life of the shell is prolonged. And angle change caused by vibration or external force in the welding process is avoided.

Description

Technical Field

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

[0002] The shearing machine housing is a large metal structural part used to enclose and protect the core moving parts of the shearing machine (such as the tool rest and hydraulic cylinder). It is usually welded from high-strength steel plates and needs to withstand the impact vibration and high load during the shearing operation. As the core structural part of heavy machinery (such as hydraulic shearing machines and metallurgical equipment), the shearing machine housing is not formed in one piece during production and processing. Instead, multiple components of the housing are pre-processed and then welded and assembled in sequence by welding equipment.

[0003] Although there are various welding equipment currently, there are still some problems. For example, in the welding process of the shearing machine housing, the housing needs to be accurately lifted to a specific height and kept stable according to the welding position requirements. Currently, the cylinder drive or screw drive mechanism is generally used to achieve the lifting function. However, the shearing machine housing is usually a large metal component with a relatively large weight. When bearing a high load for a long time, the cylinder seals are prone to wear and air leakage, and the screw threads generate gaps due to friction. These factors will cause the housing to still have a slow sinking phenomenon after being lifted to the predetermined height, directly affecting the straightness of the weld and the consistency of the penetration depth. And since the housing often needs to be manually rotated according to the actual situation to adjust its welding angle during welding, the lifting structure in the welding equipment needs to reciprocate frequently, further reducing the service life of the lifting structure. Summary of the Invention

[0004] The present invention provides a welding rotation device for a shearing machine housing, aiming to solve the problems that the lifting structure in the current welding equipment is subjected to large forces, is prone to wear, resulting in changes in the height of the welded parts, and the angle of the welded parts needs to be frequently manually rotated during welding.

[0005] The present invention is implemented as follows. A welding rotation device for a shearing machine housing includes:

[0006] A support frame, on one side of which a lifting plate is slidably connected. Fixing plates are symmetrically fixed at both ends of the lifting plate, and a supporting seat for supporting the shearing machine housing is rotatably connected between two adjacent fixing plates;

[0007] Lifting mechanism, which is used to adjust the height of the supporting seat on the support frame, and the lifting mechanism includes a first movable pulley, a second movable pulley, a first fixed pulley, a driving wheel, a second fixed pulley, an adjusting chain and a counterweight mechanism. A plurality of the first movable pulleys are respectively rotatably arranged at both ends of the bottom of the lifting plate, and a plurality of the second movable pulleys are respectively rotatably arranged at both ends of the top of the lifting plate. The first fixed pulley and the driving wheel are both rotatably connected to one side of the bottom of the support frame, and the second fixed pulley is rotatably connected to one side of the top of the support frame. One end of the adjusting chain is fixed to the support frame, and the other end respectively bypasses the first movable pulley, the first fixed pulley, the driving wheel, the second fixed pulley and the second movable pulley, and is fixed to the support frame;

[0008] Rotating mechanism, the rotating mechanism includes a rotating unit for adjusting the angle of the supporting seat and a limit locking unit.

[0009] Preferably, the counterweight mechanism includes a third fixed pulley, a linkage chain and a counterweight block. The third fixed pulley is rotatably connected to one side of the top end of the back of the support frame. One end of the linkage chain is fixed to the lifting plate, and the other end bypasses the third fixed pulley and is fixed to the counterweight block.

[0010] Preferably, the lifting mechanism further includes a first worm gear, a first servo motor and a first worm. The first worm gear is coaxially fixed to one side of the driving wheel. The first servo motor is fixed to the support frame. The first worm is coaxially fixed to the output shaft of the first servo motor, and the first worm meshes with the first worm gear.

[0011] Preferably, the rotating unit includes a docking rod, a second worm gear and a second worm. The docking rods are symmetrically fixed to both ends of the supporting seat and are rotatably connected to the fixing plate. The second worm gear is coaxially fixed to the docking rod. The second worm is rotatably connected to one side of the fixing plate and meshes with the second worm gear.

[0012] Preferably, the rotating unit further includes a transmission rod and a second servo motor. The transmission rod is coaxially fixed to one end of the second worm. The second servo motor is fixed to the bottom of the support frame, and the transmission rod is coaxially slidably clamped with the output shaft of the second servo motor.

[0013] Preferably, the output shaft of the second servo motor is provided with a cylindrical cavity, and convex blocks are arranged on the inner wall of the cavity. Grooves are arranged on the side wall of the transmission rod. The transmission rod is slidably connected in the cylindrical cavity, and the convex blocks are slidably matched with the grooves.

[0014] Preferably, the limit locking unit includes a positioning disk, a guide rod and an abutting block. The positioning disk is coaxially fixed to the other docking rod. A convex plate is arranged on the side wall of the fixing plate. The guide rod is slidably connected to the convex plate. A notch is arranged at the edge of the positioning disk. The abutting block is fixed to one end of the guide rod and slidably abuts in the notch.

[0015] Preferably, the notches provided at the edge of the positioning disk and both ends of the abutting blocks are designed with rounded chamfers.

[0016] Preferably, a return spring is sleeved outside the guide rod, and a disk is arranged on the guide rod. One end of the return spring abuts against the disk, and the other end abuts against the convex plate.

[0017] Preferably, a trapezoidal chute is arranged on the support frame, and a trapezoidal slider is arranged on the back of the lifting plate and is slidably fitted in the chute.

[0018] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0019] 1. In this solution, through the cooperation of the movable pulley group and the counterweight in the lifting mechanism to reduce the load, the self-weight of the housing is decomposed into the traction force of multiple ropes, so that the actual load of the lifting mechanism is greatly reduced. And by arranging counterweights on both sides of the lifting plate, part of the gravity of the housing is offset through the lever principle, further reducing the driving energy consumption and suppressing mechanical fatigue.

[0020] 2. In this solution, the worm and worm gear transmission structure in the indexing mechanism is combined to directly drive the housing to rotate around the vertical axis, without secondary clamping or manual intervention, shortening the clamping time. And through the inherent self-locking characteristic of the worm and worm gear, the rotation angle can be automatically locked. Even when the machine stops or the power is cut off, the position of the housing remains fixed, avoiding the change of the angle due to vibration or external force during the welding process.

[0021] 3. Through the innovation of the integration of mechanical load reduction design and self-locking transmission, the present invention systematically solves the problems of mechanical fatigue, height deviation and low efficiency of manual adjustment caused by excessive load in traditional welding devices, achieving a breakthrough improvement in welding accuracy, equipment life and production cost control, and providing an efficient and reliable technical solution for the automation upgrade of the heavy housing welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front structural schematic diagram of the support frame of the present invention;

[0023] Figure 2 is a back structural schematic diagram of the support frame of the present invention;

[0024] Figure 3 is a structural schematic diagram of the lifting mechanism of the present invention;

[0025] Figure 4 is a schematic diagram of the first servo motor and its connection structure of the present invention;

[0026] Figure 5 is a structural schematic diagram of the indexing mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the positioning disk and its connection structure of the present invention;

[0028] In the figure: 1, support frame; 2, lifting plate; 3, fixing plate; 4, supporting seat; 5, lifting mechanism; 51, first movable pulley; 52, second movable pulley; 53, first fixed pulley; 54, driving wheel; 55, second fixed pulley; 56, adjusting chain; 57, third fixed pulley; 58, linkage chain; 59, counterweight; 510, first worm gear; 511, first servo motor; 512, first worm; 6, indexing mechanism; 61, docking rod; 62, second worm gear; 63, second worm; 64, transmission rod; 65, second servo motor; 66, positioning disk; 67, guide rod; 68, abutting block; 69, return spring. Specific embodiments

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0030] Reference to "embodiment" in this context means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] An embodiment of the present invention provides a shearing machine housing welding rotation device, as Figures 1-6 shown, including:

[0032] A support frame 1, on one side of the support frame 1, a lifting plate 2 is slidably connected, at both ends of the lifting plate 2, fixing plates 3 are symmetrically fixed, and between adjacent two fixing plates 3, a supporting seat 4 for supporting the shearing machine housing is rotatably connected;

[0033] The lifting mechanism 5 is used to adjust the height of the supporting seat 4 on the support frame 1. The lifting mechanism 5 includes a first movable pulley 51, a second movable pulley 52, a first fixed pulley 53, a driving wheel 54, a second fixed pulley 55, an adjusting chain 56 and a counterweight mechanism. A plurality of first movable pulleys 51 are respectively rotatably arranged at both ends of the bottom of the lifting plate 2, and a plurality of second movable pulleys 52 are respectively rotatably arranged at both ends of the top of the lifting plate 2. The first fixed pulley 53 and the driving wheel 54 are both rotatably connected to one side of the bottom of the support frame 1, and the second fixed pulley 55 is rotatably connected to one side of the top of the support frame 1. One end of the adjusting chain 56 is fixed to the support frame 1, and the other end respectively bypasses the first movable pulley 51, the first fixed pulley 53, the driving wheel 54, the second fixed pulley 55 and the second movable pulley 52 and is fixed to the support frame 1;

[0034] The counterweight mechanism includes a third fixed pulley 57, a linkage chain 58 and a counterweight block 59. The third fixed pulley 57 is rotatably connected to one side of the top end of the back of the support frame 1. One end of the linkage chain 58 is fixed to the lifting plate 2, and the other end bypasses the third fixed pulley 57 and is fixed to the counterweight block 59;

[0035] The lifting mechanism 5 further includes a first worm gear 510, a first servo motor 511 and a first worm 512. The first worm gear 510 is coaxially fixed to one side of the driving wheel 54. The first servo motor 511 is fixed to the support frame 1. The first worm 512 is coaxially fixed to the output shaft of the first servo motor 511, and the first worm 512 meshes with the first worm gear 510

[0036] The indexing mechanism 6 includes an indexing unit for adjusting the angle of the supporting seat 4 and a limit locking unit. The indexing unit includes a docking rod 61, a second worm gear 62 and a second worm 63. The docking rods 61 are symmetrically fixed to both ends of the supporting seat 4 and are rotatably connected to the fixing plate 3. The second worm gear 62 is coaxially fixed to the docking rod 61. The second worm 63 is rotatably connected to one side of the fixing plate 3 and meshes with the second worm gear 62.

[0037] The indexing unit further includes a transmission rod 64 and a second servo motor 65. The transmission rod 64 is coaxially fixed to one end of the second worm 63. The second servo motor 65 is fixed to the bottom of the support frame 1, and the transmission rod 64 is coaxially slidably clamped with the output shaft of the second servo motor 65.

[0038] It should be noted that in the welding process of the shearing machine shell, the existing cylinder or screw lifting mechanism is prone to wear and leakage or thread gap due to long-term heavy load, which causes the shell to slowly sink after lifting, affecting the accuracy of the weld; at the same time, the manual frequent rotation to adjust the welding angle forces the lifting structure to reciprocate, aggravating mechanical loss and shortening the service life. In order to solve this problem, a lifting mechanism 5 and a transfer mechanism 6 are set in this scheme. The movable pulley group and the counterweight block in the lifting mechanism 5 cooperate to reduce the load, and the weight of the shell is decomposed into multiple sections of rope traction, so that the actual load of the lifting mechanism 5 is greatly reduced, and by arranging section counterweight blocks on both sides of the lifting plate 2, the partial gravity of the shell is offset by the lever principle, thereby further reducing the driving energy consumption. Mechanical fatigue is suppressed, and the worm gear transmission structure in the transfer mechanism 6 directly drives the shell to rotate around the vertical axis. No secondary clamping or manual intervention is required, which shortens the clamping time. The inherent self-locking characteristics of the worm gear can automatically lock the rotation angle. Even when the machine is shut down or the power is off, the position of the shell remains fixed to avoid changes in the angle due to vibration or external force during welding. The present invention systematically solves the problems of mechanical fatigue, height deviation and inefficient manual adjustment caused by excessive load in traditional welding devices through the innovation of integrating mechanical load reduction design with self-locking transmission, and achieves breakthrough improvements in welding accuracy, equipment life and production cost control, providing an efficient and reliable technical solution for the automated upgrade of heavy shell welding processes.

[0039] Specifically, in this embodiment, the scheme mainly includes a support frame 1, a lifting plate 2, a fixing plate 3, a supporting seat 4, a lifting mechanism 5 and a transfer mechanism 6. When in use, the shearing machine shell to be welded is first clamped on the supporting seat 4, and then the first servo motor 511 is started to drive the first worm 512 to rotate, and the first worm wheel 510 is engaged and linked, and at the same time, the adjustment chain 56 is driven by the driving wheel 54 to change the overall height of the lifting plate 2 and the supporting seat 4. After adjusting to an appropriate height, the second servo motor 65 is started to drive the transmission rod 64 to rotate, and synchronously drive the second worm 63 to rotate. At this time, the second worm wheel 62 is engaged and linked, and drives the supporting seat 4 to deflect until the shearing machine shell reaches a predetermined welding angle.

[0040] In a further preferred embodiment of the present invention, Figures 1-6 As shown, the output shaft of the second servo motor 65 is provided with a cylindrical cavity, and a protrusion is provided on the inner wall of the cavity, a groove is provided on the side wall of the transmission rod 64, the transmission rod 64 is slidably connected in the cylindrical cavity, and the protrusion and the groove are slidably matched.

[0041] In this embodiment, the sliding fit between the protrusion and the groove allows the transmission rod 64 to slide in the output shaft and also rotate synchronously with the output shaft.

[0042] In a further preferred embodiment of the present invention,Figures 1-6 As shown, the limit locking unit includes a positioning plate 66, a guide rod 67 and an abutment block 68. The positioning plate 66 is coaxially fixed on another docking rod 61. A convex plate is provided on the side wall of the fixed plate 3. The guide rod 67 is slidably connected to the convex plate. A notch is provided at the edge of the positioning plate 66. The abutment block 68 is fixed to one end of the guide rod 67 and slidably abuts in the notch.

[0043] In this embodiment, the positioning plate 66 is limited by the abutment block 68 to further lock the supporting seat 4 .

[0044] In a further preferred embodiment of the present invention, Figures 1-6 As shown, the notches provided at the edge of the positioning plate 66 and both ends of the abutment block 68 are designed with arc chamfers.

[0045] In this embodiment, the arc chamfer structure enables the support seat 4 to directly drive the positioning plate 66 to rotate and squeeze the abutment block 68 out of the notch after reaching a certain rotation torque, so that the angle of the support seat 4 can be smoothly adjusted.

[0046] In a further preferred embodiment of the present invention, Figures 1-6 As shown, a return spring 69 is sleeved on the outside of the guide rod 67, and a disc is arranged on the guide rod 67, one end of the return spring 69 abuts against the disc, and the other end abuts against the convex plate.

[0047] In this embodiment, the elastic force of the return spring 69 enables the guide rod 67 to drive the abutment block 68 to return to its original position quickly.

[0048] In a further preferred embodiment of the present invention, Figures 1-6 As shown, a trapezoidal slide groove is provided on the support frame 1, and a trapezoidal slider is provided on the back of the lifting plate 2 and is slidably fitted in the slide groove.

[0049] In this embodiment, the lifting plate 2 is limited by the trapezoidal sliding groove and the sliding groove, so that it can slide in a directional manner on the support frame 1.

[0050] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0051] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0052] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative work, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A shearing machine housing welding rotating device, characterized in that: include: A support frame, one side of the support frame is slidably connected to a lifting plate, both ends of the lifting plate are symmetrically fixed with fixed plates, and a supporting seat for supporting the shearing machine shell is rotatably connected between two adjacent fixed plates; A lifting mechanism, which is used to adjust the height of the supporting seat on the support frame, and the lifting mechanism includes a first movable pulley, a second movable pulley, a first fixed pulley, a driving wheel, a second fixed pulley, an adjusting chain and a counterweight mechanism, a plurality of first movable pulleys are rotatably arranged at the bottom ends of the lifting plate, a plurality of second movable pulleys are rotatably arranged at the top ends of the lifting plate, the first fixed pulley and the driving wheel are both rotatably connected to one side of the bottom of the support frame, the second fixed pulley is rotatably connected to one side of the top of the support frame, one end of the adjusting chain is fixed to the support frame, and the other end passes around the first movable pulley, the first fixed pulley, the driving wheel, the second fixed pulley and the second movable pulley respectively, and is fixed to the support frame; The transfer mechanism comprises a transfer unit for adjusting the angle of the supporting seat and a limit locking unit.

2. A shearing machine housing welding rotating device as claimed in claim 1, characterized in that: The counterweight mechanism includes a third fixed pulley, a linkage chain and a counterweight block. The third fixed pulley is rotatably connected to one side of the top end of the back of the support frame. One end of the linkage chain is fixed to the lifting plate, and the other end passes around the third fixed pulley and is fixed to the counterweight block.

3. A shearing machine housing welding rotating device as claimed in claim 1, characterized in that: The lifting mechanism also includes a first worm wheel, a first servo motor and a first worm. The first worm wheel is coaxially fixed on one side of the driving wheel, the first servo motor is fixed on the support frame, the first worm is coaxially fixed on the output shaft of the first servo motor, and the first worm is meshed with the first worm wheel.

4. A shearing machine housing welding rotating device as claimed in claim 1, characterized in that: The transfer unit includes a docking rod, a second worm wheel and a second worm. The docking rod is symmetrically fixed at both ends of the supporting seat and is rotatably connected to the fixed plate. The second worm wheel is coaxially fixed on the docking rod. The second worm is rotatably connected to one side of the fixed plate and meshes with the second worm wheel.

5. A shearing machine housing welding rotating device as claimed in claim 4, characterized in that: The indexing unit also includes a transmission rod and a second servo motor. The transmission rod is coaxially fixed to one end of the second worm. The second servo motor is fixed to the bottom of the support frame, and the transmission rod is coaxially slidably engaged with the output shaft of the second servo motor.

6. A shearing machine housing welding rotating device as claimed in claim 5, characterized in that: The output shaft of the second servo motor is provided with a cylindrical cavity, and a convex block is provided on the inner wall of the cavity. A groove is provided on the side wall of the transmission rod. The transmission rod is slidably connected in the cylindrical cavity, and the convex block and the groove are slidably matched.

7. A shearing machine housing welding rotating device as claimed in claim 4, characterized in that: The limit locking unit includes a positioning plate, a guide rod and an abutment block. The positioning plate is coaxially fixed on another docking rod. A convex plate is arranged on the side wall of the fixed plate. The guide rod is slidably connected to the convex plate. A notch is arranged at the edge of the positioning plate. The abutment block is fixed at one end of the guide rod and slidably abuts in the notch.

8. A shearing machine housing welding rotating device as claimed in claim 7, characterized in that: The notches arranged at the edge of the positioning plate and both ends of the abutment block are designed with arc chamfers.

9. A shearing machine housing welding rotating device as claimed in claim 7, characterized in that: A return spring is sleeved on the outside of the guide rod, and a disc is arranged on the guide rod. One end of the return spring abuts against the disc, and the other end abuts against the convex plate.

10. A shearing machine housing welding rotating device as claimed in claim 1, characterized in that: A trapezoidal slide groove is arranged on the support frame, and a trapezoidal slider is arranged on the back of the lifting plate and is slidably fitted in the slide groove.

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