Support mechanism and method for welding a dozer blade of a micro excavator

Abstract

The present application relates to the technical field of support mechanism, specifically to a support mechanism and method for welding of a bulldozing blade of a micro excavator, comprising an operation table, the upper surface of the operation table is fixedly connected with two support columns in a symmetrical manner, the top of the support column is provided with a support roller for supporting the bulldozing blade, the upper surface of the operation table is provided with an angle compensation mechanism, a welding gun operated by a worker is arranged directly above the operation table, the angle compensation mechanism comprises a sliding groove one, the sliding groove one is arranged in the middle of the upper surface of the operation table, the inner side wall of the sliding groove one is slidably connected with a sliding seat, and the opposite sides of the two support columns are rotatably connected with a rotating shaft through a bearing. The present application can automatically change the welding position by rotating the bulldozing blade during the process of supporting the bulldozing blade, can keep the position of the welding gun fixed to increase the stability of welding, and can compensate the change of the angle between the bulldozing blade and the welding gun when the bulldozing blade is rotated by inclining the operation table and the bulldozing blade.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of supporting mechanism, in particular to a supporting mechanism and method for welding a bulldozing blade of a micro excavator. BACKGROUND

[0002] The micro excavator is a kind of small excavator, which has the characteristics of small size, flexibility, good maneuverability and strong adaptability compared with large excavators, and the body is small and light, easy to mobilize and operate, and can enter a narrow work site to work.

[0003] The micro excavator can be installed with a bulldozing blade, and the modification can improve the work efficiency and quality of the micro excavator, so that the micro excavator has the functions of ditching and backfilling, bulldozing and leveling, and pushing materials.

[0004] In order to enhance the stability of the bulldozing blade bucket of the micro excavator and prevent deformation, a reinforcing rib is generally welded at the back of the bulldozing blade bucket to enhance the structural strength, and in order to increase the bulldozing efficiency and prevent the soil from deviating to both sides of the bucket, the cross section of the bucket is designed as an oval arc shape.

[0005] During the welding process, in order to ensure the welding quality, the welding gun and the welding surface need to maintain a certain angle, and for the above-mentioned oval cross section bulldozing blade, in order to avoid frequent movement of the welding position and ensure the stability and continuity of welding, a supporting mechanism for welding is needed, which needs to be able to move automatically to change the welding point to ensure the continuity of welding, and needs to maintain the angle between the welding gun and the bulldozing blade, but because the cross section of the existing bulldozing blade is an oval arc shape, the movement of the bulldozing blade during the welding process will change the angle between the welding gun and the bulldozing blade, affecting the welding quality, therefore, the supporting mechanism and method for welding the bulldozing blade of the micro excavator are proposed. SUMMARY

[0006] The purpose of the present application is to provide a supporting mechanism and method for welding a bulldozing blade of a micro excavator to solve the problem of "but because the cross section of the existing bulldozing blade is an oval arc shape, the movement of the bulldozing blade during the welding process will change the angle between the welding gun and the bulldozing blade, affecting the welding quality" raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a supporting mechanism for welding a bulldozing blade of a micro excavator, comprising an operating table, two supporting columns are symmetrically fixedly connected to the upper surface of the operating table, a supporting roller for supporting the bulldozing blade is installed at the top of the supporting column, an angle compensation mechanism is installed on the upper surface of the operating table, and a welding gun operated by a person is arranged directly above the operating table.

[0008] The angle compensation mechanism comprises a sliding groove one, the sliding groove one is arranged in the middle of the upper surface of the operation table, the inner side wall of the sliding groove one is slidably connected with a sliding seat, a rotating shaft is rotatably connected between the opposite sides of the two support columns through a bearing, the outer side wall of the rotating shaft is fixedly connected with a rotating column in the middle, the upper surface right side of the rotating column is fixedly connected with an extension rod, the top end of the extension rod is hingedly connected with a chuck, the upper surface of the sliding seat is fixedly connected with two racks in symmetry, the outer side wall of the rotating column is fixedly connected with two tooth rings in symmetry, the tooth rings are meshingly connected with the racks, the lower side of the operation table is provided with a bottom plate, the lower surface right side of the operation table is hingedly connected with a vertical rod, the bottom of the vertical rod is fixedly connected with the upper surface right side of the bottom plate.

[0009] The angle compensation mechanism further comprises an adjusting assembly, while driving the bulldozing shovel to rotate, the adjusting assembly can make the operation table and the bulldozing shovel as a whole to tilt, so as to compensate the angle change between the bulldozing shovel and the welding gun when the bulldozing shovel rotates.

[0010] The present application can automatically change the welding position by rotating the bulldozing shovel during supporting the bulldozing shovel, can keep the welding gun position fixed to increase the stability of welding, and can compensate the angle change between the bulldozing shovel and the welding gun when the bulldozing shovel rotates by tilting the operation table and the bulldozing shovel;

[0011] As a further preferred embodiment of the present application, the extension rod comprises a cylinder, the bottom of the cylinder is fixedly connected with the upper surface right side of the rotating column, the upper surface of the cylinder is provided with a circular groove, and the inner side wall of the circular groove is slidably connected with a sliding rod.

[0012] Under the above arrangement, the sliding rod is extended or retracted in the inner side wall of the circular groove, so that the extension rod can adapt to the change of the distance between the right end of the bulldozing shovel and the rotating column when the elliptical arc bulldozing shovel rotates, the inner wall of the bulldozing shovel can always be kept in close contact with the supporting roller, and the extension rod can pull or push the bulldozing shovel to rotate.

[0013] As a further preferred embodiment of the present application, the chuck comprises a connecting frame, the lower surface of the connecting frame is hingedly connected with the top end of the extension rod, the upper surface of the connecting frame is threadedly connected with a screw rod, the bottom end of the screw rod is rotatably connected with a clamping plate through a bearing, the top end of the screw rod is fixedly connected with a knob one, and the lower surface of the clamping plate and the inner side wall bottom wall of the connecting frame are both bonded with rubber pads.

[0014] Under the above arrangement, rotating the screw rod clockwise drives the clamping plate to move, so that the clamping plate approaches and abuts against the right end of the bulldozing shovel, thereby clamping and fixing the right end of the bulldozing shovel, so that the bulldozing shovel can rotate synchronously with the chuck, and the rubber pads are arranged to facilitate increasing the friction and improving the clamping and fixing effect of the bulldozing shovel.

[0015] As a further preferred of the technical solution: the adjusting assembly comprises a transmission rod, the lower surface of the sliding seat is hinged with the transmission rod on the left side, the bottom end of the transmission rod is hinged to the upper surface of the bottom plate on the left side, and the left side wall of the operation table is provided with an electric cylinder I, the piston rod of the electric cylinder I is fixedly connected with the left side wall of the sliding seat and penetrates through the left side wall of the operation table, and the transmission rod is in a right oblique state when the operation table is horizontal.

[0016] The angle compensation mechanism is arranged in the application, and when the angle compensation mechanism works, the piston rod of the electric cylinder I is retracted to drive the sliding seat and the rack to move left, drive the gear ring, the rotating column, the telescopic rod and the chuck to rotate clockwise, drive the bulldozing shovel to rotate clockwise, and automatically change the welding position; when the bulldozing shovel rotates clockwise, the angle between the welding torch and the bulldozing shovel gradually increases due to the elliptical arc shape of the bulldozing shovel, the sliding seat pushes the transmission rod while moving left, the oblique angle of the transmission rod decreases, the left end of the operation table is lifted, the bulldozing shovel is inclined right as a whole, the angle between the welding torch and the bulldozing shovel is reduced, and the welding angle is prevented from being too large; the piston rod of the electric cylinder I is elongated to drive the sliding seat and the rack to move right, drive the gear ring, the rotating column, the telescopic rod and the chuck to rotate counterclockwise, drive the bulldozing shovel to rotate counterclockwise, and automatically change the welding position; when the bulldozing shovel rotates counterclockwise, the angle between the welding torch and the bulldozing shovel gradually decreases, the sliding seat moves right while pulling the transmission rod, the oblique angle of the transmission rod increases, the left end of the operation table is lowered, the bulldozing shovel is inclined left as a whole, the angle between the welding torch and the bulldozing shovel is increased, the welding angle is prevented from being too small, the compensation and maintenance of the angle between the welding torch and the bulldozing shovel are realized, the problems of welding deformation and insufficient welding caused by the angle being too large or too small are avoided, and the welding quality is improved.

[0017] As a further preferred of the technical solution: the adjusting assembly comprises a screw rod, the two ends of the screw rod are rotatably connected to the inner side walls of the sliding groove I on both sides through bearings, the left side wall of the operation table is provided with an electric motor, the screw rod is screw-connected with the sliding seat, the lower surface of the sliding seat is fixedly connected with a mounting bracket in the middle, the bottom end of the mounting bracket is provided with a walking wheel, and the upper surface of the bottom plate is provided with an inclined plate on the left side; the walking wheel is located in the middle of the inclined plate when the operation table is horizontal.

[0018] Under the above settings, the output shaft end of the motor rotates clockwise to drive the screw rod to rotate clockwise, the slide moves along the outer side wall of the screw rod to the left, drives the rack to move to the left, and then drives the gear ring, rotating column, telescopic rod and chuck to rotate clockwise, the chuck drives the bulldozing shovel to rotate clockwise, and the welding position is automatically changed; when the bulldozing shovel rotates clockwise, the angle between the welding torch and the bulldozing shovel gradually increases due to the elliptical arc shape of the bulldozing shovel; while the slide moves to the left, the walking wheel moves to the left on the upper surface of the inclined plate, and the left end of the operating platform is lifted to make the bulldozing shovel incline to the right as a whole, so as to reduce the angle between the welding torch and the bulldozing shovel and avoid too large welding angle; and the output shaft end of the motor rotates counterclockwise to drive the screw rod to rotate counterclockwise, the slide moves along the outer side wall of the screw rod to the right, drives the rack to move to the right, and then drives the gear ring, rotating column, telescopic rod and chuck to rotate counterclockwise, the chuck drives the bulldozing shovel to rotate counterclockwise, and the welding position is automatically changed; when the bulldozing shovel rotates counterclockwise, the angle between the welding torch and the bulldozing shovel gradually decreases due to the elliptical arc shape of the bulldozing shovel; while the slide moves to the right, the walking wheel moves to the right on the upper surface of the inclined plate, and the left end of the operating platform is lowered to make the bulldozing shovel incline to the left as a whole, so as to increase the angle between the welding torch and the bulldozing shovel and avoid too small welding angle, thereby avoiding the problems of too large and too small welding angle.

[0019] As a further preferred of the technical scheme: the right end of the inclined plate is hinged to the left side of the upper surface of the bottom plate, a second sliding groove is formed in the left side of the upper surface of the bottom plate, a sliding block is slidably connected to the inner side wall of the second sliding groove, a lifting roller is fixedly connected to the upper surface of the sliding block, a bearing plate is fixedly connected to the left side wall of the bottom plate, and a second electric cylinder is mounted on the upper surface of the bearing plate.

[0020] Under the above settings, the piston rod of the second electric cylinder is extended or retracted to drive the sliding block to move leftward or rightward, so as to change the supporting point of the lifting roller on the inclined plate and change the inclination angle of the inclined plate; in this way, when the walking wheel moves a same horizontal distance on the inclined plate, the inclination angle of the operating platform and the bulldozing shovel changes, the smaller the inclination angle of the inclined plate, the greater the change of the inclination angle of the operating platform and the bulldozing shovel, so as to adjust the size of the compensation angle and improve the applicability.

[0021] As a further preferred of the technical scheme: a positioning mechanism is mounted on the outer side wall of the operating platform, the positioning mechanism comprises two blind grooves, the two blind grooves are symmetrically formed in the outer side wall of the operating platform, a sliding plate is slidably connected to the inner side wall of the blind groove, a vertical plate is fixedly connected to the end of the sliding plate away from the operating platform, mounting columns are uniformly fixedly connected to the side of the vertical plate close to the operating platform, and a ball is arranged at the end of the mounting column away from the vertical plate.

[0022] As a further preferred of the technical solution: the lower surface of the operating table is symmetrically screw-connected with two top rods, and the bottom end of the top rod is fixedly connected with knob two.

[0023] Under the above setting, the sliding plate is pushed inward to make the ball adhere to the outer side wall of the dozer blade, the top rod is rotated clockwise to lock the sliding plate by friction, so that when the dozer blade rotates, the ball can provide positioning and guidance for the dozer blade to prevent the rotation of the dozer blade from deviating, thereby ensuring the accuracy of welding.

[0024] As a further preferred of the technical solution: the outer side wall of the bottom plate is uniformly fixedly connected with mounting blocks, and the lower surface of the mounting block is provided with a mounting hole.

[0025] The application also provides a use method of the supporting mechanism for welding of the dozer blade of the micro excavator, which comprises the following steps:

[0026] S1, the dozer blade is placed with the opening downward on the two supporting rollers, the sliding plate is pushed inward to make the ball adhere to the outer side wall of the dozer blade, the dozer blade is supported by the supporting rollers, and the right end of the dozer blade is clamped by the chuck;

[0027] S2, the piston rod of the electric cylinder one is retracted to drive the sliding seat and the rack to move left, drive the gear ring, the rotating column, the telescopic rod and the chuck to rotate clockwise, drive the dozer blade to rotate clockwise by the chuck, and automatically change the welding position;

[0028] S3, when the dozer blade rotates clockwise, the angle between the welding gun and the dozer blade gradually increases due to the elliptical arc shape of the dozer blade, the sliding seat pushes the transmission rod while moving left, the inclination angle of the transmission rod becomes smaller, the left end of the operating table is lifted to make the dozer blade tilt to the right as a whole, the angle between the welding gun and the dozer blade is reduced, and the welding angle is avoided to be too large;

[0029] S4, the piston rod of the electric cylinder one is elongated to drive the sliding seat and the rack to move right, drive the gear ring, the rotating column, the telescopic rod and the chuck to rotate counterclockwise, drive the dozer blade to rotate counterclockwise by the chuck, and automatically change the welding position, when the dozer blade rotates counterclockwise, the angle between the welding gun and the dozer blade gradually becomes smaller, the sliding seat pulls the transmission rod while moving right, the inclination angle of the transmission rod becomes larger, the left end of the operating table is lowered to make the dozer blade tilt to the left as a whole, the angle between the welding gun and the dozer blade is increased, the welding angle is avoided to be too small, and real-time compensation of the welding angle is realized.

[0030] Compared with the prior art, the application has the following advantages:

[0031] 1. The present application can automatically change the welding position by rotating the bulldozing shovel during the process of supporting the bulldozing shovel, can keep the welding gun position fixed to increase the stability of welding, and can compensate the angle change between the bulldozing shovel and the welding gun when the bulldozing shovel rotates through the inclined operation table and the bulldozing shovel.

[0032] 2. The present application can automatically change the welding position by rotating the bulldozing shovel during the process of supporting the bulldozing shovel, can keep the welding gun position fixed to increase the stability of welding, and can compensate the angle change between the bulldozing shovel and the welding gun when the bulldozing shovel rotates through the inclined operation table and the bulldozing shovel.

[0033] 3. The present application can automatically change the welding position by rotating the bulldozing shovel during the process of supporting the bulldozing shovel, can keep the welding gun position fixed to increase the stability of welding, and can compensate the angle change between the bulldozing shovel and the welding gun when the bulldozing shovel rotates through the inclined operation table and the bulldozing shovel.

[0034] 4. The present application can provide positioning and guiding for the bulldozing shovel through the ball when the bulldozing shovel rotates, prevent the rotation of the bulldozing shovel from deviating, and guarantee the accuracy of welding. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a right view structural schematic diagram of the present application;

[0036] Figure 2 It is a sectional view structural schematic diagram of the present application;

[0037] Figure 3 It is a structural schematic diagram of the supporting column and the supporting roller in the present application;

[0038] Figure 4 It is a structural schematic diagram of the slide plate and the vertical plate in the present application;

[0039] Figure 5 It is a structural schematic diagram of the cylinder and the slide rod in the present application;

[0040] Figure 6 Figure 1 is a schematic diagram of the structure of the rack and pinion in the present application;

[0041] Figure 7 Figure 2 is a schematic diagram of the sectional structure of the operating platform in the present application;

[0042] Figure 8 Figure 3 is an enlarged view of the A area structure in the present application; Figure 2

[0043] Figure 9 Figure 4 is a schematic diagram of the structure of the walking wheel and the inclined plate in the present application;

[0044] Figure 10 Figure 5 is a schematic diagram of the structure of the sliding groove two and the sliding block in the present application.

[0045] In the figure:

[0046] 1, operating platform; 2, support column; 3, support roller; 4, angle compensation mechanism; 5, positioning mechanism; 6, mounting block; 7, mounting hole;

[0047] 41, sliding groove one; 42, sliding seat; 43, rotating shaft; 44, rotating column; 45, telescopic rod; 46, chuck; 47, rack; 48, pinion; 49, bottom plate; 410, vertical rod; 411, transmission rod; 412, electric cylinder one; 413, screw rod; 414, motor; 415, mounting frame; 416, walking wheel; 417, inclined plate; 418, sliding groove two; 419, sliding block; 420, jacking roller; 421, bearing plate; 422, electric cylinder two;

[0048] 451, cylinder; 452, circular groove; 453, sliding rod;

[0049] 461, connecting frame; 462, screw rod; 463, clamping plate; 464, knob one; 465, rubber pad.

[0050] 51, blind groove; 52, sliding plate; 53, vertical plate; 54, mounting column; 55, ball; 56, jacking rod; 57, knob two. DETAILED DESCRIPTION

[0051] ​The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The examples in the embodiments are shown in the drawings, in which the same or similar notations represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0052] Please refer to Figures 1-8 The present application provides a technical solution: a supporting mechanism for welding of a bulldozing blade of a micro excavator, comprising an operation table 1, two supporting columns 2 are fixedly connected to the upper surface of the operation table 1 in a symmetrical manner, a supporting roller 3 for supporting the bulldozing blade is installed at the top of the supporting column 2, an angle compensation mechanism 4 is installed on the upper surface of the operation table 1, and a welding torch operated by a person is arranged above the operation table 1.

[0053] The angle compensation mechanism 4 comprises a sliding groove one 41, the sliding groove one 41 is arranged in the middle of the upper surface of the operation table 1, a sliding seat 42 is slidably connected to the inner side wall of the sliding groove one 41, a rotating shaft 43 is rotatably connected between the opposite sides of the two supporting columns 2 through a bearing, a rotating column 44 is fixedly connected to the middle of the outer side wall of the rotating shaft 43, an extension rod 45 is fixedly connected to the upper surface right side of the rotating column 44, a chuck 46 is hinged to the top end of the extension rod 45, two racks 47 are fixedly connected to the upper surface of the sliding seat 42 in a symmetrical manner, two toothed rings 48 are fixedly connected to the outer side wall of the rotating column 44 in a symmetrical manner, the toothed rings 48 are meshingly connected with the racks 47, a bottom plate 49 is arranged below the operation table 1, and a vertical rod 410 is hinged to the lower surface right side of the operation table 1.

[0054] The angle compensation mechanism 4 further comprises an adjusting assembly, while driving the bulldozing blade to rotate, the adjusting assembly can make the operation table 1 and the bulldozing blade as a whole to incline, so as to compensate the angle change between the bulldozing blade and the welding torch when the bulldozing blade rotates.

[0055] The present application can automatically change the welding position by rotating the bulldozing blade during supporting the bulldozing blade, can keep the welding torch position fixed to increase the stability of welding, and can compensate the angle change between the bulldozing blade and the welding torch when the bulldozing blade rotates by inclining the operation table 1 and the bulldozing blade.

[0056] In the embodiment, specifically, the extension rod 45 comprises a cylinder 451, the bottom of the cylinder 451 is fixedly connected to the upper surface right side of the rotating column 44, a circular groove 452 is arranged on the upper surface of the cylinder 451, and a sliding rod 453 is slidably connected to the inner side wall of the circular groove 452.

[0057] Under the above arrangement, the slide rod 453 is telescopic at the inner side wall of the circular groove 452, so that the telescopic rod 45 is suitable for changing the distance from the right end of the bulldozing blade to the rotating column 44 when the bulldozing blade rotates in an elliptical arc shape, so that the inner wall of the bulldozing blade can always be attached to the supporting roller 3, and the telescopic rod 45 can pull or push the bulldozing blade to rotate.

[0058] In this embodiment, specifically, the clamp head 46 comprises a connecting frame 461, the lower surface of the connecting frame 461 is hinged to the top end of the telescopic rod 45, the upper surface of the connecting frame 461 is threadedly connected with a screw rod 462, the bottom end of the screw rod 462 is rotatably connected with a clamping plate 463 through a bearing, the top end of the screw rod 462 is fixedly connected with a knob one 464, and the lower surface of the clamping plate 463 and the inner side wall bottom wall of the connecting frame 461 are both bonded with rubber pads 465.

[0059] Under the above arrangement, rotating the screw rod 462 clockwise drives the clamping plate 463 to move, so that the clamping plate 463 approaches and abuts against the right end of the bulldozing blade, which clamps and fixes the right end of the bulldozing blade, so that the bulldozing blade can rotate synchronously with the clamp head 46, and the rubber pads 465 increase the friction between the bulldozing blade and the clamping plate 463 and the connecting frame 461, improve the clamping and fixing effect, and prevent slipping.

[0060] In this embodiment, specifically, the adjusting assembly comprises a transmission rod 411, the lower surface left side of the sliding seat 42 is hinged with the transmission rod 411, the bottom end of the transmission rod 411 is hinged to the upper surface left side of the bottom plate 49, the left side wall of the operation table 1 is installed with an electric cylinder one 412, the piston rod one end of the electric cylinder one 412 penetrates through the left side wall of the operation table 1 and is fixedly connected with the left side wall of the sliding seat 42, and when the operation table 1 is horizontal, the transmission rod 411 is in a right inclined state.

[0061] In the above setting, in order to avoid the problem that "because the existing bulldozing shovel section is an elliptical arc, the movement of the bulldozing shovel during welding changes the angle between the welding gun and the bulldozing shovel, affecting the welding quality", the present application is provided with an angle compensation mechanism 4, when the angle compensation mechanism 4 works, the left movement of the sliding seat 42 and the rack 47 is driven by the retraction of the piston rod of the electric cylinder 1, the clockwise rotation of the collet 46, the extension rod 45, the rotating column 44 and the gear ring 48 is driven, the bulldozing shovel is rotated clockwise by the collet 46, the welding position is automatically changed, when the bulldozing shovel rotates clockwise, the angle between the welding gun and the bulldozing shovel gradually increases because the bulldozing shovel is an elliptical arc, while the sliding seat 42 moves to the left, the transmission rod 411 is pushed by the sliding seat 42, the inclination angle of the transmission rod 411 decreases, the left end of the operation table 1 is lifted, the bulldozing shovel is inclined to the right as a whole, the angle between the welding gun and the bulldozing shovel is reduced, and the welding angle is avoided to be too large; the right movement of the sliding seat 42 and the rack 47 is driven by the extension of the piston rod of the electric cylinder 1, the counterclockwise rotation of the collet 46, the extension rod 45, the rotating column 44 and the gear ring 48 is driven, the bulldozing shovel is rotated counterclockwise by the collet 46, the welding position is automatically changed, when the bulldozing shovel rotates counterclockwise, the angle between the welding gun and the bulldozing shovel gradually decreases, while the sliding seat 42 moves to the right, the transmission rod 411 is pulled, the inclination angle of the transmission rod 411 increases, the left end of the operation table 1 is lowered, the bulldozing shovel is inclined to the left as a whole, the angle between the welding gun and the bulldozing shovel is increased, the welding angle is avoided to be too small, the compensation and maintenance of the angle between the welding gun and the bulldozing shovel are realized, the problems of welding deformation and insufficient welding caused by the angle being too large or too small are avoided, and the welding quality is improved.

[0062] In the embodiment, specifically, the outer side wall of the operation table 1 is provided with a positioning mechanism 5, the positioning mechanism 5 comprises two blind grooves 51, the two blind grooves 51 are symmetrically arranged on the outer side wall of the operation table 1, the inner side wall of the blind groove 51 is slidably connected with a sliding plate 52, the end of the sliding plate 52 away from the operation table 1 is fixedly connected with a vertical plate 53, the vertical plate 53 is uniformly fixedly connected with a mounting column 54 on the side close to the operation table 1, and the end of the mounting column 54 away from the vertical plate 53 is provided with a ball 55.

[0063] In the embodiment, specifically, the lower surface of the operation table 1 is symmetrically screw-connected with two jacks 56, and the bottom end of the jack 56 is fixedly connected with a knob 57.

[0064] In the above setting, the ball 55 is in close contact with the outer side wall of the bulldozing shovel by pushing the sliding plate 52 inward, the sliding plate 52 is locked by the friction force by rotating the jack 56 clockwise to make the jack 56 tightly press the sliding plate 52, in this way, when the bulldozing shovel rotates, the ball 55 can provide positioning and guidance for the bulldozing shovel, prevent the rotation of the bulldozing shovel from deviating, and ensure the accuracy of welding.

[0065] Specifically in this embodiment, the outer side walls of the bottom plate 49 are uniformly and fixedly connected with mounting blocks 6, and mounting holes 7 are formed in the lower surfaces of the mounting blocks 6; the mounting blocks 6 are locked by means of the mounting holes 7 and external screws, so that accidental movement of the bottom plate 49 during welding can be avoided.

[0066] Embodiment 2

[0067] Please refer to Figures 9-10 The adjusting assembly comprises a lead screw 413, both ends of the lead screw 413 are rotatably connected to the two sides of the inner side walls of the sliding groove one 41 through bearings, a motor 414 is installed on the left side wall of the operation table 1, the lead screw 413 is in threaded connection with the sliding block 42, the lower surface of the sliding block 42 is fixedly connected with a mounting bracket 415, the bottom end of the mounting bracket 415 is installed with a walking wheel 416, and the upper surface of the left side of the bottom plate 49 is provided with an inclined plate 417; when the operation table 1 is horizontal, the walking wheel 416 is located at the middle part of the inclined plate 417.

[0068] Under the above settings, the output shaft of the motor 414 is rotated clockwise to drive the lead screw 413 to rotate clockwise, so that the sliding block 42 moves left along the outer side walls of the lead screw 413, the rack 47 moves left, and then the gear ring 48, the rotating column 44, the telescopic rod 45 and the chuck 46 rotate clockwise, the chuck 46 drives the bulldozing shovel to rotate clockwise, and the welding position is automatically changed; when the bulldozing shovel rotates clockwise, because the bulldozing shovel is in an elliptical arc shape, the angle between the welding torch and the bulldozing shovel gradually increases; while the sliding block 42 moves left, the sliding block 42 drives the walking wheel 416 to move left, the walking wheel 416 moves up on the upper surface of the inclined plate 417, the left end of the operation table 1 is lifted up, the whole bulldozing shovel is inclined to the right, the angle between the welding torch and the bulldozing shovel is reduced, and the welding angle is avoided to be too large; the output shaft of the motor 414 is rotated counterclockwise to drive the lead screw 413 to rotate counterclockwise, so that the sliding block 42 moves right along the outer side walls of the lead screw 413, the rack 47 moves right, and then the gear ring 48, the rotating column 44, the telescopic rod 45 and the chuck 46 rotate counterclockwise, the chuck 46 drives the bulldozing shovel to rotate counterclockwise, and the welding position is automatically changed; when the bulldozing shovel rotates counterclockwise, because the bulldozing shovel is in an elliptical arc shape, the angle between the welding torch and the bulldozing shovel gradually decreases; while the sliding block 42 moves right, the sliding block 42 drives the walking wheel 416 to move right, the walking wheel 416 moves down on the upper surface of the inclined plate 417, the left end of the operation table 1 is lowered, the whole bulldozing shovel is inclined to the left, the angle between the welding torch and the bulldozing shovel is increased, and the welding angle is avoided to be too small, so that the problems of the welding angle being too large or too small are avoided.

[0069] Specifically in this embodiment, the right end of the inclined plate 417 is hinged to the left side of the upper surface of the base plate 49, the left side of the upper surface of the base plate 49 is provided with a sliding groove two 418, the inner side wall of the sliding groove two 418 is slidingly connected with a sliding block 419, the upper surface of the sliding block 419 is fixedly connected with a jacking roller 420, the left side wall of the base plate 49 is fixedly connected with a bearing plate 421, the upper surface of the bearing plate 421 is installed with an electric cylinder two 422, and the left side wall of the piston rod of the electric cylinder two 422 is fixedly connected to the left side wall of the sliding block 419.

[0070] Under the above arrangement, the piston rod of the electric cylinder two 422 is driven to extend or retract to drive the sliding block 419 to move leftward or rightward, so as to change the supporting point of the jacking roller 420 on the inclined plate 417, and thus the inclination angle of the inclined plate 417 is changed, so that when the walking wheel 416 moves the same horizontal distance, the inclination angle of the operation platform 1 and the bulldozing blade will change, the smaller the inclination angle of the inclined plate 417, the greater the change of the inclination angle of the operation platform 1 and the bulldozing blade, so that the size of the compensation angle can be adjusted, and the applicability is improved.

[0071] The application also provides a use method of the supporting mechanism for welding the bulldozing blade of the micro excavator, which comprises the following steps:

[0072] S1, the bulldozing blade is placed with the opening downward on the two supporting rollers 3, the sliding plate 52 is pushed inward, the ball bearings 55 are attached to the outer side wall of the bulldozing blade, the bulldozing blade is supported by the supporting rollers 3, and the right end of the bulldozing blade is clamped by the chuck 46;

[0073] S2, the sliding block 42 and the rack 47 are driven to move leftward by the retraction of the piston rod of the electric cylinder one 412, the tooth ring 48, the rotating column 44, the telescopic rod 45 and the chuck 46 are driven to rotate clockwise, the chuck 46 drives the bulldozing blade to rotate clockwise, and the welding position is automatically changed;

[0074] S3, when the bulldozing blade rotates clockwise, the angle between the welding gun and the bulldozing blade gradually increases due to the elliptical arc shape of the bulldozing blade, the transmission rod 411 is pushed by the sliding block 42 while the sliding block 42 moves leftward, the inclination angle of the transmission rod 411 is reduced, the left end of the operation platform 1 is lifted up, the bulldozing blade is inclined to the right as a whole, the angle between the welding gun and the bulldozing blade is reduced, and the welding angle is prevented from being too large;

[0075] S4, the piston rod of the electric cylinder 412 is elongated to drive the slide 42 and the rack 47 to move right, drive the gear ring 48, the rotating column 44, the telescopic rod 45 and the chuck 46 to rotate counterclockwise, the bulldozing shovel is pulled to rotate counterclockwise by the chuck 46, the welding position is automatically changed, when the bulldozing shovel rotates counterclockwise, the angle between the welding torch and the bulldozing shovel gradually decreases, the slide 42 moves right to pull the transmission rod 411, the inclined angle of the transmission rod 411 increases, the left end of the operation table 1 is lowered, the bulldozing shovel is inclined left as a whole, the angle between the welding torch and the bulldozing shovel is increased, the welding angle is avoided to be too small, and the welding angle real-time compensation is realized.

[0076] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences, modifications, replacements and variations of the embodiments of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A support mechanism for welding a bulldozer blade to a micro excavator, characterized by: Including the operating platform (1), the operating platform (1) upper surface symmetry fixedly connected with two support columns (2), the top of support column (2) is equipped with the support roller (3) for supporting the inner wall of bulldozing shovel, the upper surface of operating platform (1) is equipped with angle compensation mechanism (4), the operating platform (1) is directly above the artificial operation welding torch is set up; The angle compensation mechanism (4) includes the sliding groove one (41), the sliding groove one (41) is opened in the middle part of the upper surface of operating platform (1), the inner side wall of sliding groove one (41) is slidably connected with slide (42), the opposite side between two support columns (2) is rotatably connected with the rotating shaft (43) through bearing, the outer side wall middle part of rotating shaft (43) is fixedly connected with rotating column (44), the upper surface right side of rotating column (44) is fixedly connected with telescopic rod (45), the top of telescopic rod (45) is hinged with chuck (46), the upper surface of slide (42) is symmetrically fixedly connected with two racks (47), the outer side wall of rotating column (44) is symmetrically fixedly connected with two tooth rings (48), the tooth ring (48) is engagedly connected with the rack (47), the lower side of operating platform (1) is equipped with bottom plate (49), the lower surface right side of operating platform (1) is hinged with vertical rod (410), the bottom of vertical rod (410) is fixedly connected on the upper surface right side of bottom plate (49); The angle compensation mechanism (4) further includes adjusting assembly, while driving bulldozing shovel to rotate, the adjusting assembly can make operating platform (1) and bulldozing shovel overall inclination, the angle change formed between bulldozing shovel and welding torch when bulldozing shovel rotates is compensated; The adjusting assembly includes lead screw (413), the both ends of lead screw (413) are rotatably connected on the both sides of the inner side wall of sliding groove one (41) through bearing, the left side wall of operating platform (1) is equipped with motor (414), the lead screw (413) is threadedly connected with slide (42), the lower surface middle part of slide (42) is fixedly connected with mounting bracket (415), the bottom end of mounting bracket (415) is equipped with walking wheel (416), the upper surface left side of bottom plate (49) is equipped with inclined plate (417), when operating platform (1) is horizontal, walking wheel (416) is located in the middle part of inclined plate (417); The right end of inclined plate (417) is hinged on the upper surface left side of bottom plate (49), the inner side wall of sliding groove two (418) is slidably connected with sliding block (419), the upper surface of sliding block (419) is fixedly connected with jacking roller (420), the left side wall of bottom plate (49) is fixedly connected with bearing plate (421), the upper surface of bearing plate (421) is equipped with electric cylinder two (422), the piston rod one end of electric cylinder two (422) is fixedly connected on the left side wall of sliding block (419). The outer side wall of the operation table (1) is provided with a positioning mechanism (5), the positioning mechanism (5) comprises two blind grooves (51), the two blind grooves (51) are symmetrically arranged on the outer side wall of the operation table (1), the inner side wall of the blind groove (51) is slidably connected with a sliding plate (52), one end of the sliding plate (52) away from the operation table (1) is fixedly connected with a vertical plate (53), the vertical plate (53) is uniformly fixedly connected with a mounting column (54) on the side close to the operation table (1), and the mounting column (54) is provided with a ball (55) at the end away from the vertical plate (53).

2. The support mechanism for welding the bulldozer blade of the micro excavator according to claim 1, wherein: The telescopic rod (45) comprises a cylinder (451), the bottom of the cylinder (451) is fixedly connected to the upper surface right side of the rotating column (44), the upper surface of the cylinder (451) is provided with a circular groove (452), and the inner side wall of the circular groove (452) is slidably connected with a sliding rod (453).

3. The support mechanism for welding the bulldozer blade of the micro excavator according to claim 2, characterized in that: The chuck (46) comprises a connecting frame (461), the lower surface of the connecting frame (461) is hingedly connected to the top end of the telescopic rod (45), the upper surface of the connecting frame (461) is threadedly connected with a screw rod (462), the bottom end of the screw rod (462) is rotatably connected with a clamping plate (463) through a bearing, the top end of the screw rod (462) is fixedly connected with a knob one (464), and the lower surface of the clamping plate (463) and the inner side wall bottom wall of the connecting frame (461) are both attached with rubber pads (465).

4. The support mechanism for welding the dozer blade of the micro excavator according to claim 1, wherein: The lower surface of the operation table (1) is symmetrically threadedly connected with two jacks (56), and the bottom end of the jack (56) is fixedly connected with a knob two (57).

5. The support mechanism for welding the dozer blade of the micro excavator according to claim 1, wherein: The outer side wall of the bottom plate (49) is uniformly fixedly connected with a mounting block (6), and the lower surface of the mounting block (6) is provided with a mounting hole (7).

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