A welding device for engineering machinery parts

Abstract

The present invention discloses a welding device for engineering machinery parts, and specifically relates to the technical field of welding devices, including a base, wherein the upper end of the base is symmetrically fixedly connected with a guide structure, a pre-treatment structure is commonly provided on the side where the two guide structures are close to each other, a welding positioning structure is commonly provided on the side where the two guide structures are close to each other and their upper ends, and a clamping structure is provided in the middle of the upper end of the base. The welding device for engineering machinery parts described in the present invention clamps and positions the crossbeam of the mechanical part through the action of the clamping structure, and simultaneously pre-treats the upper end of the crossbeam through the pre-treatment structure provided on the guide structure to clean the rust and oil stains on its surface; the welding surface of the column is polished and cleaned by the cooperation of the pre-treatment structure and the welding positioning structure, so as to realize the positioning, pre-treatment and welding of the crossbeam and the column, improve the welding efficiency, reduce the operation of personnel, and thus improve the processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a welding device for engineering machinery parts. Background Art

[0002] In the field of engineering machinery welding, the welding process is a key step in manufacturing high-quality mechanical parts. With the development of industrial automation, the requirements for welding technology are also increasing. Welding not only needs to ensure the connection strength and stability of parts, but also improve production efficiency and reduce costs. However, traditional welding methods often rely on manual operations, which limits the further improvement of production efficiency and welding quality.

[0003] Chinese patent announcement number CN212470336U discloses a welding device for engineering machinery parts, including a connecting rod and a tripod structure; the connecting rod is composed of a straight rod portion and a threaded portion, the tripod structure includes a cylindrical sleeve, a threaded sleeve, a right-angle frame, a tripod, a tripod fixing part and a part fixing part, the cylindrical sleeve and the threaded sleeve are respectively arranged on the straight rod portion and the threaded portion, the cylindrical sleeve and the threaded sleeve are both provided with a right-angle frame, the right-angle frame is provided with a tripod hole, the tripod is slidably connected in the tripod hole, a tripod fixing part is provided at the connection between the tripod and the tripod hole, and a part fixing part is provided at one end of the tripod.

[0004] The equipment in the above-mentioned documents has the problem of high complexity in the positioning process. It relies on the operator's experience and manual operation, which easily leads to inaccurate positioning and affects the welding quality. At the same time, due to the large coverage of the welding surface, the welding time and strength cannot be accurately controlled, resulting in the inability to ensure the uniformity of the welding surface, which affects the welding effect. In addition, the existing welding device cannot pre-treat the welding surface. The welding surface after welding is uneven and requires additional grinding work, which not only increases the workload but also reduces production efficiency. Summary of the invention

[0005] The main purpose of the present invention is to provide a welding device for engineering machinery parts, which can effectively solve the problems that the positioning process of existing equipment is complicated and cannot be accurately positioned and cannot pre-treat the welding surface.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A welding device for engineering machinery parts comprises a base, wherein the upper end of the base is fixedly connected to a control console, the upper end of the base is fixedly connected to a dust collection cabinet, the upper end of the base is symmetrically fixedly connected to guide structures, a pretreatment structure is commonly provided on one side of the two guide structures close to each other, a welding positioning structure is commonly provided on one side of the two guide structures close to each other and on their upper ends, and a clamping structure is provided in the middle of the upper end of the base.

[0008] Preferably, the clamping structure includes a fixed block fixedly connected to the rear part of the upper end of the base, the upper end of the base is provided with a mounting groove, the inner surface of the mounting groove is symmetrically provided with oblique grooves on the left and right sides, the lower part of the inner surface of the mounting groove is slidably connected with a threaded block, the inner surface of the threaded block is threadedly connected with a threaded rod 1 rotatably connected to the inner surface of the mounting groove, the front end of the threaded rod 1 is fixedly connected with a crank rotatably connected to the front end of the base, the inner surface of the mounting groove is slidably connected with a limited seat, the left and right ends of the limit seat are symmetrically fixedly connected with guide blocks slidably connected to the inner surfaces of adjacent oblique grooves, a positioning component connected to its inner cavity is provided in the middle part of the upper end of the base, and the lower end of the limit seat is fixedly connected to the upper end of the threaded block through a telescopic rod.

[0009] Preferably, the positioning assembly includes a bottom plate located in the middle of the upper end of the base, a plurality of spring piston rods are linearly distributed and fixedly connected to the lower end of the bottom plate, a hydraulic cavity is opened in the middle of the upper end of the base corresponding to the positions of the plurality of spring piston rods, the outer surfaces of the plurality of spring piston rods are respectively slidably connected to the inner surfaces of adjacent hydraulic cavities, a hydraulic oil storage tank connected to the inner cavities of the plurality of hydraulic cavities is opened in the middle of the inner cavity of the base, a plurality of fixed plates are linearly distributed and fixedly connected to the left and right parts of the upper end of the base, a hydraulic telescopic rod is fixedly connected to one side of the fixed plates on both sides close to the bottom plate, a spring limiting rod is symmetrically slidably connected along the center of the hydraulic telescopic rod, the hydraulic telescopic rod and one end of two adjacent spring limiting rods close to the bottom plate are commonly fixedly connected to a contact plate, and connecting pipes connected to the inner cavities of the plurality of hydraulic telescopic rods on the same side are fixedly connected to the left and right sides of the inner surface of the hydraulic oil storage tank.

[0010] Preferably, the pretreatment structure includes a grinding wheel located between the two guide structures, and driving components symmetrically arranged at the left and right ends of the grinding wheel are slidably connected to the guide structure. The outer surface of the central axis of the grinding wheel is symmetrically connected to a connecting rod 2 for rotation on the left and right sides, and a cleaning component slidably connected to the guide structure and connected to the inner cavity of the dust collector is commonly arranged on the front side of the two connecting rods.

[0011] Preferably, the driving assembly includes a sliding seat slidably connected to a side of the guide structure away from the grinding wheel, the rear end of the sliding seat is fixedly connected to a motor, the output end of the motor is transmission-connected to a bevel gear rotatably connected to an inner surface of the sliding seat, the outer surface of the bevel gear away from the grinding wheel is meshed with a forward wheel rotatably connected to an inner surface of the sliding seat, the outer surface of the bevel gear close to the grinding wheel is meshed with a reverse wheel rotatably connected to an inner surface of the sliding seat, one end of the reverse wheel close to the grinding wheel penetrates through an inner surface of the sliding seat, extends to the inner side of the guide structure and is fixedly connected to a spur gear, and the side of the forward wheel close to the grinding wheel penetrates through the reverse wheel, the spur gear and the central axis of the grinding wheel are transmission-connected.

[0012] Preferably, the cleaning assembly includes a connecting rod 1 which is rotatably connected to the inner surface of the two connecting rods 2 on a side away from the grinding wheel and slidably connected to the guide structure on the same side; a dust box is fixedly connected to the middle of the outer surface of the connecting rod 1; the upper and lower ends of the dust box are both provided with ash inlet grooves connected to the inner cavity thereof; the upper and lower ends of the dust box are both symmetrically fixedly connected to cleaning brushes front and back; the inner cavity of the ash inlet groove is fixedly connected to a telescopic hose connected to the inner cavity of the dust cabinet; the left and right ends of the connecting rod 1 are respectively fixedly connected to fiber wheels slidably connected to adjacent guide structures.

[0013] Preferably, the guide structure includes a support plate fixedly connected to the upper end of the base, a horizontal guide groove running through the left and right ends of the support plate is provided on the side of the support plate close to the grinding wheel, an L-shaped guide groove slidably connected to the welding positioning structure and connected to the rear of the horizontal guide groove is provided on the upper part of the side of the support plate close to the grinding wheel, a tooth groove meshing with the spur gear is linearly distributed on the bottom wall of the inner surface of the horizontal guide groove, an idle groove is provided on the rear portion of the inner surface of the horizontal guide groove, a spring rod is fixedly connected to the inner surface of the horizontal guide groove at the position of the idle groove, the horizontal guide groove and the L-shaped guide groove have the same height but the depth of the horizontal guide groove is half of the depth of the L-shaped guide groove, and a guide groove one slidably connected to a sliding seat one is symmetrically provided along the horizontal guide groove on the side of the support plate away from the grinding wheel.

[0014] Preferably, the welding positioning structure includes two threaded rods two which are symmetrically distributed on the left and right and are rotatably connected to the upper ends of adjacent support plates through bearing brackets, the two threaded rods two are commonly connected to a transmission member, the rear end of one of the support plates is fixedly connected to a motor two which is transmission-connected to the adjacent threaded rods two, the outer surfaces of the two threaded rods two are threadedly connected to a limiting telescopic rod, the ends of the two limiting telescopic rods close to the support plate on the same side are rotatably connected to rollers which are slidingly connected to the inner surfaces of adjacent L-shaped guide grooves, the outer surfaces of the movable rods of the two limiting telescopic rods are fixedly connected to connecting blocks which are tightly attached to the end faces of the adjacent support plates, the ends of the two connecting blocks away from the support plates are fixedly connected to symmetrically distributed clamping assemblies, and the lower ends of the two connecting blocks are fixedly connected to a welding robot arm.

[0015] Preferably, the clamping assembly includes a clamping seat fixedly connected to one end of the connecting block away from the limiting telescopic rod, a sliding groove 1 is symmetrically opened front and back on the inner surface of the clamping seat, a sliding groove 2 perpendicular to the sliding groove 1 is symmetrically opened front and back on the inner surface of the clamping seat away from the limiting telescopic rod, a connecting rod 3 is slidably connected to the inner surfaces of the sliding groove 1 and the sliding groove 2 on the same side, two connecting rods 3 are rotatably connected to the sliding seat 2 on one side close to the limiting telescopic rod, and two connecting rods 3 are rotatably connected to the L-shaped clamping arms slidably connected to the clamping seat on the other side away from the sliding seat 2, and the clamping seat is fixedly connected to the electric telescopic rod on one end close to the limiting telescopic rod, and the piston rod at the output end of the electric telescopic rod is fixedly connected to the sliding seat 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention clamps and positions the crossbeam of the mechanical parts through the action of the clamping structure, and simultaneously pre-treats the upper end of the crossbeam through the pre-treatment structure arranged on the guide structure, cleans the rust and oil stains on its surface, and facilitates subsequent welding; the welding surface of the column is polished and cleaned by the cooperation of the pre-treatment structure and the welding positioning structure, and is transported to the predetermined position of the crossbeam and welded through the cooperation of the guide structure and the welding positioning structure, thereby realizing the positioning, pre-treatment and welding of the crossbeam and the column, improving the welding efficiency, reducing the operation of personnel, and thus improving the processing efficiency.

[0018] The present invention drives the threaded rod 1 to rotate through the crank, and drives the limit seat to move backward and upward under the limit of the guide block and the inclined groove through the cooperation between the threaded rod 1 and the threaded block, thereby cooperating with the action of the fixed block to position the crossbeam front and back; synchronously, the action of the bottom plate arranged in the middle of the upper end of the base on the spring piston rod causes the hydraulic oil in the hydraulic cavity to enter the hydraulic oil storage tank, and is evenly distributed to each hydraulic telescopic rod through the action of the hydraulic oil storage tank and the connecting pipe, and the contact plate is driven by the hydraulic telescopic rod to contact the side of the crossbeam, thereby positioning the left and right positions of the crossbeam, improving the accuracy of subsequent column welding, and reducing the non-compliance of mechanical parts due to position deviation.

[0019] The present invention utilizes the functions of the driving component and the grinding wheel, as well as the limiting of the guide groove 1 and the horizontal guide groove, to drive the grinding wheel to move above the crossbeam, and drives the grinding wheel to rotate through the driving component to grind the rust on its surface, thereby preventing these rust from affecting the strength of subsequent welding. At the same time, the cleaning component is used to clean the dust and oil stains on the upper end of the crossbeam due to storage and transportation, as well as the debris generated by grinding, thereby reducing the impact of these impurities on the welding strength and improving the yield rate.

[0020] The present invention utilizes the action of motor 2 and threaded rod 2 to drive the limiting telescopic rod to move forward and backward, and through the cooperation of the roller arranged on the limiting telescopic rod and the L-shaped guide groove, the column clamped by the clamping assembly can pass over the grinding wheel and the cleaning assembly, thereby pre-treating its welding surface, further reducing the influence of rust, dust or oil on the welding strength, and improving the welding quality.

[0021] The present invention further cooperates with the sliding seat 2 through the electric telescopic rod to pull the L-shaped clamp arm to slide in the clamping seat through the connecting rod 3. By adjusting the distance between the L-shaped clamp arms on both sides, it can adapt to columns of different widths, thereby improving its application range and clamping stability, thereby ensuring welding accuracy and reducing the generation of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the clamping structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the positioning assembly of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the pretreatment structure of the present invention;

[0026] Figure 5 For the present invention Figure 1 A schematic diagram of the enlarged local structure at center A;

[0027] Figure 6 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the guide structure of the present invention;

[0029] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the local structure at B in the middle;

[0030] Fig. 9 It is a structural schematic diagram of the driving assembly of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the welding positioning structure of the present invention;

[0032] Fig.11 It is a schematic structural diagram of the clamping assembly of the present invention.

[0033] In the figure: 1. base; 2. clamping structure; 21. limit seat; 22. positioning assembly; 221. hydraulic oil storage box; 222. connecting pipe; 223. fixing plate; 224. hydraulic telescopic rod; 225. contact plate; 226. spring limit rod; 227. bottom plate; 228. spring piston rod; 229. hydraulic chamber; 23. fixing block; 24. mounting groove; 25. inclined groove; 26. threaded block; 27. guide block; 28. threaded rod 1; 29. ​​crank; 3. dust cabinet; 4. control console; 5. guide structure; 51. support plate; 52. guide groove 1; 53. horizontal guide groove; 54. L-shaped guide groove; 55. tooth groove; 56. idle groove; 57. spring rod; 6. pretreatment structure; 61. drive assembly; 611. Motor 1; 612, sliding seat 1; 613, bevel gear 1; 614, forward wheel; 615, reverse wheel; 616, spur gear; 62, grinding wheel; 63, cleaning assembly; 631, connecting rod 1; 632, fiber wheel; 633, dust suction box; 634, cleaning brush; 635, ash inlet; 636, telescopic hose; 64, connecting rod 2; 7, welding positioning structure; 71, motor 2; 72, threaded rod 2; 73, transmission part; 74, connecting block; 75, clamping assembly; 751, clamping seat; 752, electric telescopic rod; 753, sliding seat 2; 754, connecting rod 3; 755, L-shaped clamping arm; 756, slide 1; 757, slide 2; 76, welding mechanical arm; 77, limit telescopic rod; 78, roller. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1, as Figure 1 As shown, a welding device for engineering machinery parts includes a base 1, a control console 4 is fixedly connected to the upper end of the base 1, a dust collection cabinet 3 is fixedly connected to the upper end of the base 1, a guide structure 5 is symmetrically fixedly connected to the upper end of the base 1, a pretreatment structure 6 is commonly provided on the side where the two guide structures 5 are close to each other, a welding positioning structure 7 is commonly provided on the side where the two guide structures 5 are close to each other and on the upper end, and a clamping structure 2 is provided in the middle of the upper end of the base 1.

[0036] It should be noted that the above-mentioned clamping structure 2 is a kind of structure which has been widely used in the prior art. In the present invention, it is only used to realize the functions of starting and stopping the motor in the control device and sucking the dust cabinet 3, and its internal structure, operating principle, wiring, and control method are not described in detail.

[0037] In addition, the above-mentioned dust collection cabinet 3 is a device that extracts dust through exhaust air, and its working principle is similar to that of a household vacuum cleaner in the prior art. This structure has been widely used in the prior art. In the present invention, it is only used to realize the dust collection function, and its internal structure, operating principle, wiring, and control method will not be described in detail.

[0038] During the operation of this embodiment, the crossbeam of the mechanical part is first clamped and positioned by the clamping structure 2, and the upper end of the crossbeam is simultaneously pretreated by the pretreatment structure 6 arranged on the guide structure 5 to clean the rust and oil stains on its surface to facilitate subsequent welding; the welding surface of the column is polished and cleaned by the cooperation of the pretreatment structure 6 and the welding positioning structure 7, and is transported to the predetermined position of the crossbeam and welded by the cooperation of the guide structure 5 and the welding positioning structure 7, thereby realizing the positioning, pretreatment and welding of the crossbeam and the column, improving welding efficiency, reducing personnel operation, and thereby improving processing efficiency.

[0039] Embodiment 2. Based on embodiment 1, this embodiment drives the threaded rod 28 to rotate through the crank 29, and drives the limit seat 21 to move backward and upward under the limit of the guide block 27 and the inclined groove 25 through the cooperation between the threaded rod 28 and the threaded block 26, so as to cooperate with the action of the fixed block 23 to position the beam forward and backward; synchronously, the action of the bottom plate 227 set in the middle of the upper end of the base 1 on the spring piston rod 228 causes the hydraulic oil in the hydraulic chamber 229 to enter the hydraulic oil storage tank 221, and is evenly distributed to each hydraulic telescopic rod 224 through the action of the hydraulic oil storage tank 221 and the connecting pipe 222, and the contact plate 225 is driven by the hydraulic telescopic rod 224 to contact the side of the beam, so as to position the left and right positions of the beam, improve the accuracy of subsequent column welding, and reduce the failure of mechanical parts to meet the standards due to position deviation.

[0040] Specifically, to achieve the positioning and fixing of the beam, refer to Figure 2 The clamping structure 2 includes a fixed block 23 fixedly connected to the rear part of the upper end of the base 1, a mounting groove 24 is opened at the upper end of the base 1, and oblique grooves 25 are symmetrically opened on the left and right sides of the inner surface of the mounting groove 24, a threaded block 26 is slidably connected to the lower part of the inner surface of the mounting groove 24, and a threaded rod 28 rotatably connected to the inner surface of the mounting groove 24 is threadedly connected to the inner surface of the threaded block 26, and a crank 29 rotatably connected to the front end of the base 1 is fixedly connected to the front end of the threaded rod 28, and a limited seat 21 is slidably connected to the inner surface of the mounting groove 24, and the left and right ends of the limited seat 21 are symmetrically fixedly connected with guide blocks 27 slidably connected to the inner surface of the adjacent oblique groove 25. A positioning component 22 connected to its inner cavity is provided in the middle part of the upper end of the base 1, and the lower end of the limited seat 21 is fixedly connected to the upper end of the threaded block 26 through a telescopic rod.

[0041] The crossbeam is placed on the upper side of the positioning assembly 22, and is positioned left and right by the positioning assembly 22. Further, the worker shakes the crank 29, and the crank 29 drives the threaded rod 28 to rotate, and the threaded block 26 is driven to slide back and forth in the installation groove 24 through the thread action of the threaded rod 28 and the threaded block 26. It is particularly noted that the bottom of the threaded block 26 is a plane, which is tightly attached to the bottom wall of the inner surface of the installation groove 24 and cannot rotate with the threaded rod 28, so it can slide under the action of the thread.

[0042] When the threaded block 26 moves forward and backward, it will drive the limit seat 21 to move forward and backward in the installation groove 24 through the telescopic rod. However, due to the limiting effect of the guide block 27 and the inclined groove 25, the limit seat 21 can only move obliquely along the track of the inclined groove 25 in the installation groove 24, thereby extending out from the installation groove 24 and contacting the front end of the beam, and finally clamping the beam in the middle together with the fixed block 23 on the rear side for front and rear positioning.

[0043] Further, to achieve the clamping and positioning of the beam, refer to Figure 3 The positioning assembly 22 includes a bottom plate 227 located in the middle of the upper end of the base 1, and a plurality of spring piston rods 228 are linearly distributed and fixedly connected to the lower end of the bottom plate 227. A hydraulic cavity 229 is provided in the middle of the upper end of the base 1 corresponding to the positions of the plurality of spring piston rods 228. The outer surfaces of the plurality of spring piston rods 228 are respectively slidably connected to the inner surfaces of the adjacent hydraulic cavities 229. A hydraulic oil storage tank 221 connected to the inner cavities of the plurality of hydraulic cavities 229 is provided in the middle of the inner cavity of the base 1. The left and right parts of the upper end of the base 1 are linearly distributed and fixedly connected to Plate 223, one side of the fixed plates 223 on both sides close to the bottom plate 227 is fixedly connected with a hydraulic telescopic rod 224, one side of the fixed plates 223 on both sides close to the bottom plate 227 is symmetrically slidably connected with a spring limiting rod 226 along the center of the hydraulic telescopic rod 224, the hydraulic telescopic rod 224 and one end of the two adjacent spring limiting rods 226 close to the bottom plate 227 are commonly fixedly connected with a contact plate 225, and the left and right sides of the inner surface of the hydraulic oil storage box 221 are fixedly connected with connecting pipes 222 that are connected to the inner cavities of several hydraulic telescopic rods 224 on the same side.

[0044] When the crossbeam is placed above the base plate 227, the base plate 227 will move downward under the action of the gravity of the crossbeam. At this time, the spring piston rod 228 will gradually move downward in the hydraulic chamber 229. The hydraulic chamber 229, the hydraulic oil storage tank 221, the connecting pipe 222 and the hydraulic telescopic rod 224 are all filled with hydraulic oil. When the hydraulic oil in the hydraulic chamber 229 is squeezed by the spring piston rod 228, it will enter the hydraulic oil storage tank 221 and be transmitted to the hydraulic telescopic rod 224 via the hydraulic oil storage tank 221 and the connecting pipe 222, thereby pushing the piston rod in the hydraulic telescopic rod 224 to extend outward and simultaneously pushing the contact plate 225 to approach the side of the crossbeam. Since the distribution of the hydraulic oil is balanced, the formation and pressure of the contact plate 225 fitting against the side of the crossbeam are the same, so the crossbeam can be positioned from both sides.

[0045] Embodiment 3: Based on embodiment 2, this embodiment further utilizes the functions of the driving component 61 and the grinding wheel 62, as well as the limiting of the guide groove 52 and the horizontal guide groove 53, to drive the grinding wheel 62 to move above the beam, and the driving component 61 drives the grinding wheel 62 to rotate to grind the rust on its surface to prevent these rust from affecting the strength of subsequent welding. At the same time, the cleaning component 63 is used to clean the dust, oil stains contaminated by storage and transportation on the upper end of the beam, as well as the debris generated by grinding, to reduce the impact of these impurities on the welding strength and improve the yield rate.

[0046] Specifically, to achieve grinding and cleaning of the welding surface, refer to Figure 4 The pretreatment structure 6 includes a grinding wheel 62 located between the two guide structures 5, and a driving assembly 61 slidably connected to the guide structure 5 is symmetrically arranged at the left and right ends of the grinding wheel 62. A connecting rod 2 64 is symmetrically rotated on the outer surface of the central axis of the grinding wheel 62, and a cleaning assembly 63 slidably connected to the guide structure 5 and connected to the inner cavity of the dust collection cabinet 3 is commonly arranged on the front side of the two connecting rods 2 64.

[0047] The driving assembly 61 is used to drive the grinding wheel 62 to move forward and backward under the limiting action of the horizontal guide groove 53 and simultaneously grind the upper end of the beam. The synchronous cleaning assembly 63 moves synchronously with the cleaning assembly 63 under the action of the connecting rod 2 64 to clean the upper part of the beam.

[0048] Further, in order to guide the grinding wheel 62 to move on the welding surface to grind it, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8The guide structure 5 includes a support plate 51 fixedly connected to the upper end of the base 1, a horizontal guide groove 53 penetrating the left and right ends of the support plate 51 is provided on the side of the support plate 51 close to the grinding wheel 62, a tooth groove 55 meshing with the spur gear 616 is linearly distributed on the bottom wall of the inner surface of the horizontal guide groove 53, an idle groove 56 is provided at the rear part of the inner surface of the horizontal guide groove 53, a spring rod 57 is fixedly connected to the inner surface of the horizontal guide groove 53 at the position of the idle groove 56, and a guide groove 52 slidably connected to the sliding seat 1 612 is symmetrically provided along the horizontal guide groove 53 on the side of the support plate 51 away from the grinding wheel 62.

[0049] The guide groove 52 is used to limit the running track of the driving assembly 61. The horizontal guide groove 53 and the L-shaped guide groove 54 opened inside thereof are used to cooperate with the driving assembly 61 to drive the driving assembly 61 and the grinding wheel 62 to move forward and backward synchronously. In order to realize the pretreatment of the column, the grinding wheel 62 needs to keep rotating on the rear side. An L-shaped guide groove 54 is set on the rear side of the horizontal guide groove 53 to keep the driving assembly 61 running continuously at a predetermined position. At the same time, a spring rod 57 is set to assist in resetting the driving assembly 61 when it runs in the reverse direction.

[0050] Further, in order to realize the driving of the grinding wheel 62 to rotate and move the upper end of the beam under the guidance of the guide structure 5 to grind it, refer to Fig. 9 The driving assembly 61 includes a sliding seat 612 that is slidably connected to the side of the guide structure 5 away from the grinding wheel 62, the rear end of the sliding seat 612 is fixedly connected to a motor 611, the output end of the motor 611 is transmission-connected to a bevel gear 613 that is rotationally connected to the inner surface of the sliding seat 612, the side of the outer surface of the bevel gear 613 away from the grinding wheel 62 is meshed with a forward wheel 614 that is rotationally connected to the inner surface of the sliding seat 612, the side of the outer surface of the bevel gear 613 close to the grinding wheel 62 is meshed with a reverse wheel 615 that is rotationally connected to the inner surface of the sliding seat 612, one end of the reverse wheel 615 close to the grinding wheel 62 penetrates the inner surface of the sliding seat 612, extends to the inner side of the guide structure 5 and is fixedly connected to a spur gear 616, the side of the forward wheel 614 close to the grinding wheel 62 penetrates the reverse wheel 615, the spur gear 616 is transmission-connected to the central axis of the grinding wheel 62.

[0051] First, the motor 611 drives the bevel gear 613 to rotate, and the bevel gear 613 drives the forward wheel 614 and the reverse wheel 615 to rotate, and the reverse wheel 615 drives the spur gear 616 to rotate, and the meshing action of the spur gear 616 and the L-shaped guide groove 54 and the cooperation of the sliding seat 612 and the guide groove 52 drive the motor 611 to slide in the guide groove 52, thereby driving the grinding wheel 62 to move along the path of the guide groove 52, and the synchronous forward wheel 614 rotates under the action of the bevel gear 613, thereby driving the grinding wheel 62 to rotate, and grinding the upper end of the beam.

[0052] Further, in order to collect and clean the dust from grinding, refer to Figure 6 The cleaning assembly 63 includes a connecting rod 1 631 which is rotatably connected to the inner surface of the two connecting rods 2 64 away from the grinding wheel 62 and is slidably connected to the guide structure 5 on the same side. A dust box 633 is fixedly connected to the middle of the outer surface of the connecting rod 1 631. The upper and lower ends of the dust box 633 are provided with dust inlet grooves 635 connected to the inner cavity thereof. The upper and lower ends of the dust box 633 are symmetrically fixedly connected to cleaning brushes 634 front and back. The inner cavity of the dust inlet groove 635 is fixedly connected to a telescopic hose 636 connected to the inner cavity of the dust cabinet 3. The left and right ends of the connecting rod 1 631 are respectively fixedly connected to fiber wheels 632 which are slidably connected to the adjacent guide structure 5.

[0053] When the grinding wheel 62 is driven by the driving assembly 61 to move forward and backward on the upper side of the beam, the cleaning assembly 63 is driven to move synchronously through the connecting rod 2 64, and the oil stains on the upper side of the beam are scrubbed by the cleaning brush 634, and the dust is sucked into the dust collecting cabinet 3 through the dust collecting cabinet 3 and the dust feeding slot 635 synchronously;

[0054] Furthermore, grinding will also generate a lot of dust, which will affect the strength of subsequent welding. Therefore, when the grinding wheel 62 is reset and moved backward, the cleaning component 63 located on the front side will also clean and absorb the grinding dust to avoid affecting the welding strength.

[0055] Embodiment 4: Based on Embodiment 3, this embodiment uses the action of the second motor 71 and the second threaded rod 72 to drive the limiting telescopic rod 77 to move forward and backward, and the roller 78 provided on the limiting telescopic rod 77 cooperates with the L-shaped guide groove 54 so that the column clamped by the clamping assembly 75 can pass over the grinding wheel 62 and the cleaning assembly 63, thereby pre-treating the welding surface, further reducing the influence of rust, dust or oil on the welding strength, and improving the welding quality;

[0056] Furthermore, the electric telescopic rod 752 cooperates with the sliding seat 2 753 to pull the L-shaped clamp arm 755 to slide in the clamping seat 751 through the connecting rod 3 754. By adjusting the distance between the L-shaped clamp arms 755 on both sides, it can adapt to columns of different widths, thereby improving its scope of application and clamping stability, thereby ensuring welding accuracy and reducing the production of defective products.

[0057] Specifically, in order to achieve the clamping and fixing of the column, and to pre-treat the welding surface through the cooperation of the guide structure 5 and the pre-treating structure 6, refer to Fig.10The welding positioning structure 7 includes two threaded rods 72 symmetrically distributed on the left and right and rotatably connected to the upper ends of adjacent support plates 51 through bearing brackets. The two threaded rods 72 are commonly connected to a transmission member 73. A motor 71 is fixedly connected to the rear end of one support plate 51 and is connected to the adjacent threaded rod 72. The outer surfaces of the two threaded rods 72 are threadedly connected to limited telescopic rods 77. The ends of the two limited telescopic rods 77 close to the support plate 51 on the same side are rotatably connected to rollers 78 slidably connected to the inner surfaces of the adjacent L-shaped guide grooves 54. The outer surfaces of the movable rods of the two limited telescopic rods 77 are fixedly connected to connecting blocks 74 that are tightly attached to the end faces of the adjacent support plates 51. The ends of the two connecting blocks 74 away from the support plates 51 are fixedly connected to symmetrically distributed clamping assemblies 75, and the lower ends of the two connecting blocks 74 are fixedly connected to welding mechanical arms 76.

[0058] The second motor 71 drives the second threaded rod 72 to rotate, and the second threaded rods 72 on both sides rotate synchronously through the transmission member 73. It should be noted that the transmission member 73 is composed of a plurality of bevel gears and a rotating shaft, which can realize power transmission in the vertical direction. It is a conventional power transmission means in the prior art. In the present invention, it is only used for basic transmission, and its specific operating principle and structure are not specifically displayed and described;

[0059] Further, in order to cooperate with the pretreatment structure 6 to pretreat the welding surface, refer to Figure 7 An L-shaped guide groove 54 is provided on the upper part of one side of the support plate 51 close to the grinding wheel 62, which is slidably connected to the welding positioning structure 7 and connected to the rear of the horizontal guide groove 53. The horizontal guide groove 53 and the L-shaped guide groove 54 have the same height, but the depth of the horizontal guide groove 53 is half the depth of the L-shaped guide groove 54.

[0060] When the threaded rod 72 rotates, it will drive the limiting telescopic rod 77 to slide on the surface of the support plate 51, thereby driving the connecting block 74 to move forward and backward. The synchronous limiting telescopic rod 77 can be extended and retracted. A roller 78 is installed on one side of its movable rod, which can slide along the path limited by the L-shaped guide groove 54, so as to first pass over the grinding wheel 62 and grind the lower end of the column through the grinding wheel 62. At the same time, the cleaning brush 634 and the ash inlet trough 635 are used to deal with oil and dust, thereby reducing the influence of these factors on welding accuracy and strength.

[0061] Further, to achieve the clamping and fixing of the column, refer to Fig.11The clamping assembly 75 includes a clamping seat 751 fixedly connected to one end of the connecting block 74 away from the limiting telescopic rod 77, a sliding groove 756 is symmetrically opened on the inner surface of the clamping seat 751, and a sliding groove 757 perpendicular to the sliding groove 1 756 is symmetrically opened on the inner surface of the clamping seat 751 away from the limiting telescopic rod 77. The inner surfaces of the sliding groove 1 756 and the sliding groove 2 757 on the same side are slidably connected with a connecting rod 3 754, and the two connecting rods 3 754 are rotatably connected to the sliding seat 2 753 on one side close to the limiting telescopic rod 77. The two connecting rods 3 754 are rotatably connected to the sliding seat 2 753 on one side away from the sliding seat 2 753. The two connecting rods 3 754 are rotatably connected to the L-shaped clamping arm 755 slidably connected to the clamping seat 751 respectively. The end of the clamping seat 751 close to the limiting telescopic rod 77 is fixedly connected to the electric telescopic rod 752, and the piston rod at the output end of the electric telescopic rod 752 is fixedly connected to the sliding seat 2 753.

[0062] The electric telescopic rod 752 is extended, and the sliding seat 2 753 moves toward the column. At this time, under the limit of the sliding groove 1 756 and the sliding groove 2 757, the connecting rod 3 754 moves parallel to the side of the column, thereby pushing the L-shaped clamp arms 755 on both sides away from each other;

[0063] The electric telescopic rod 752 is retracted, and the sliding seat 2 753 is away from the column. At this time, the connecting rod 3 754 tends to be perpendicular to the side of the column, and pulls the L-shaped clamp arms 755 closer to each other to clamp and fix the column.

[0064] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding device for engineering machinery parts, comprising a base (1), a control console (4) being fixedly connected to the upper end of the base (1), and a dust collecting cabinet (3) being fixedly connected to the upper end of the base (1), characterized in that: The upper end of the base (1) is symmetrically fixedly connected with a guide structure (5), the two guide structures (5) are provided with a pre-processing structure (6) on one side close to each other, the two guide structures (5) are provided with a welding positioning structure (7) on one side close to each other and their upper ends, and a clamping structure (2) is provided in the middle of the upper end of the base (1); The pretreatment structure (6) comprises a grinding wheel (62) located between the two guide structures (5); the outer surface of the central axis of the grinding wheel (62) is symmetrically rotatably connected to a second connecting rod (64); the front sides of the two second connecting rods (64) are jointly provided with a cleaning component (63) which is slidably connected to the guide structure (5) and communicated with the inner cavity of the dust collecting cabinet (3); The guide structure (5) comprises a support plate (51) fixedly connected to the upper end of the base (1); a horizontal guide groove (53) penetrating the left and right ends of the support plate (51) is provided on a side of the support plate (51) close to the grinding wheel (62); a guide groove (52) slidably connected to a sliding seat (612) is symmetrically provided along the horizontal guide groove (53) on a side of the support plate (51) away from the grinding wheel (62); an L-shaped guide groove (54) slidably connected to a welding positioning structure (7) and connected to the rear of the horizontal guide groove (53) is provided on an upper part of a side of the support plate (51) close to the grinding wheel (62); the horizontal guide groove (53) and the L-shaped guide groove (54) have the same height, but the depth of the horizontal guide groove (53) is half the depth of the L-shaped guide groove (54); The welding positioning structure (7) comprises two threaded rods (72) symmetrically distributed on the left and right and rotatably connected to the upper ends of adjacent support plates (51) through bearing brackets, the outer surfaces of the two threaded rods (72) being threadedly connected to limit telescopic rods (77), and the ends of the two limit telescopic rods (77) close to the support plate (51) on the same side being rotatably connected to rollers (78) slidably connected to the inner surfaces of adjacent L-shaped guide grooves (54); The roller (78) provided on the position-limiting telescopic rod (77) cooperates with the L-shaped guide groove (54) so ​​that the column to be processed can pass over the grinding wheel (62) and the cleaning assembly (63).

2. The welding device for engineering machinery parts according to claim 1, characterized in that: The clamping structure (2) comprises a fixing block (23) fixedly connected to the rear portion of the upper end of the base (1); a mounting groove (24) is provided at the upper end of the base (1); oblique grooves (25) are symmetrically provided on the left and right sides of the inner surface of the mounting groove (24); a threaded block (26) is slidably connected to the lower portion of the inner surface of the mounting groove (24); a threaded rod (28) is threadedly connected to the inner surface of the threaded block (26) and is rotatably connected to the inner surface of the mounting groove (24); a crank (29) is fixedly connected to the front end of the threaded rod (28) and is rotatably connected to the front end of the base (1); a limit seat (21) is slidably connected to the inner surface of the mounting groove (24); guide blocks (27) are symmetrically fixedly connected to the inner surfaces of adjacent oblique grooves (25) at the left and right ends of the limit seat (21); a positioning assembly (22) is provided at the middle portion of the upper end of the base (1) and is communicated with the inner cavity thereof; and the lower end of the limit seat (21) is fixedly connected to the upper end of the threaded block (26) via a telescopic rod.

3. The welding device for engineering machinery parts according to claim 2, characterized in that: The positioning assembly (22) comprises a bottom plate (227) located in the middle of the upper end of the base (1), a plurality of spring piston rods (228) are linearly distributed and fixedly connected to the lower end of the bottom plate (227), a hydraulic cavity (229) is provided in the middle of the upper end of the base (1) at positions corresponding to the plurality of spring piston rods (228), the outer surfaces of the plurality of spring piston rods (228) are respectively slidably connected to the inner surfaces of adjacent hydraulic cavities (229), a hydraulic oil storage tank (221) is provided in the middle of the inner cavity of the base (1) and is connected to the inner cavities of the plurality of hydraulic cavities (229), and a plurality of spring piston rods (228) are linearly distributed and fixedly connected to the left and right parts of the upper end of the base (1). A fixed plate (223), one side of the fixed plates (223) on both sides close to the bottom plate (227) is fixedly connected to a hydraulic telescopic rod (224), one side of the fixed plates (223) on both sides close to the bottom plate (227) is symmetrically slidably connected to a spring limiting rod (226) along the center of the hydraulic telescopic rod (224), one end of the hydraulic telescopic rod (224) and two adjacent spring limiting rods (226) close to the bottom plate (227) is fixedly connected to a contact plate (225), and the inner surface of the hydraulic oil storage box (221) is fixedly connected to connecting pipes (222) on both sides that are connected to the inner cavities of a plurality of hydraulic telescopic rods (224) on the same side.

4. The welding device for engineering machinery parts according to claim 1, characterized in that: The grinding wheel (62) is symmetrically provided with drive components (61) slidably connected to the guide structure (5) at the left and right ends.

5. The welding device for engineering machinery parts according to claim 4, characterized in that: The driving assembly (61) comprises a sliding seat (612) slidably connected to a side of the guide structure (5) away from the grinding wheel (62); a motor (611) is fixedly connected to the rear end of the sliding seat (612); an output end of the motor (611) is drivingly connected to a bevel gear (613) rotatably connected to the inner surface of the sliding seat (612); a positive wheel (614) rotatably connected to the inner surface of the sliding seat (612) is meshed on the side of the outer surface of the bevel gear (613) away from the grinding wheel (62); The outer surface of the bevel gear (613) is meshed with a reverse wheel (615) rotatably connected to the inner surface of the sliding seat (612) on one side thereof near the grinding wheel (62); one end of the reverse wheel (615) near the grinding wheel (62) passes through the inner surface of the sliding seat (612) to extend to the inner side of the guide structure (5) and is fixedly connected to a spur gear (616); the side of the forward wheel (614) near the grinding wheel (62) passes through the reverse wheel (615), the spur gear (616) and is transmission-connected to the central axis of the grinding wheel (62).

6. The welding device for engineering machinery parts according to claim 5, characterized in that: The cleaning assembly (63) comprises a connecting rod (631) which is rotatably connected to the inner surface of the two connecting rods (64) on a side away from the grinding wheel (62) and is slidably connected to the guide structure (5) on the same side; a dust box (633) is fixedly connected to the middle of the outer surface of the connecting rod (631); the upper and lower ends of the dust box (633) are both provided with dust inlet grooves (635) connected to the inner cavity thereof; the upper and lower ends of the dust box (633) are both symmetrically fixedly connected to cleaning brushes (634) in a front-to-back manner; the inner cavity of the dust inlet groove (635) is fixedly connected to a telescopic hose (636) connected to the inner cavity of the dust cabinet (3); and the left and right ends of the connecting rod (631) are respectively fixedly connected to fiber wheels (632) slidably connected to adjacent guide structures (5).

7. The welding device for engineering machinery parts according to claim 6, characterized in that: The bottom wall of the inner surface of the horizontal guide groove (53) is linearly provided with tooth grooves (55) meshing with the spur gear (616), the rear portion of the inner surface of the horizontal guide groove (53) is provided with an idle groove (56), and a spring rod (57) is fixedly connected to the inner surface of the horizontal guide groove (53) at the location of the idle groove (56).

8. The welding device for engineering machinery parts according to claim 1, characterized in that: The two threaded rods (72) are commonly connected to a transmission member (73); a motor (71) is fixedly connected to the rear end of one of the support plates (51) and is connected to the adjacent threaded rod (72); the outer surfaces of the movable rods of the two limit telescopic rods (77) are fixedly connected to connecting blocks (74) that are tightly attached to the end surfaces of the adjacent support plates (51); the ends of the two connecting blocks (74) away from the support plates (51) are fixedly connected to symmetrically distributed clamping assemblies (75); and the lower ends of the two connecting blocks (74) are fixedly connected to welding mechanical arms (76).

9. The construction machinery parts welding device according to claim 8, characterized in that: The clamping assembly (75) comprises a clamping seat (751) fixedly connected to one end of the connecting block (74) away from the limiting telescopic rod (77); a first slide groove (756) is symmetrically provided on the inner surface of the clamping seat (751); a second slide groove (757) perpendicular to the first slide groove (756) is symmetrically provided on the inner surface of the clamping seat (751) away from the limiting telescopic rod (77); a connecting rod (754) is slidably connected to the inner surfaces of the first slide groove (756) and the second slide groove (757) on the same side; The side of the three connecting rods (754) close to the limiting telescopic rod (77) is rotatably connected to the second sliding seat (753), and the sides of the two connecting rods (754) away from the second sliding seat (753) are respectively rotatably connected to an L-shaped clamping arm (755) slidably connected to the clamping seat (751), and one end of the clamping seat (751) close to the limiting telescopic rod (77) is fixedly connected to the electric telescopic rod (752), and the piston rod at the output end of the electric telescopic rod (752) is fixedly connected to the second sliding seat (753).

Images