Welding seam polishing device

Abstract

The utility model discloses a weld joint polishing device which comprises a base, one side of the top face of the base is connected with a side plate, the two ends of the top face of the base are connected with wall plates, one sides of the wall plates are connected with the side plate, the base is in transmission connection with a sliding seat through a linear displacement mechanism, a first hydraulic cylinder is installed on the sliding seat, and a through hole is formed in the side plate. The telescopic end of the first hydraulic cylinder penetrates through the through hole, the penetrating end is connected with a mounting frame, a grinding mechanism is arranged on the mounting frame, first lifting lugs are connected to the two sides of the grinding mechanism, end plates are connected to the two sides of the end, away from the base, of the mounting frame, first guide rods are connected to the two end plates, and the ends, away from the end plates, of the first guide rods are connected with the mounting frame. The two first lifting lugs are slidably connected to the two first guide rods correspondingly, and the two first guide rods are sleeved with springs. During grinding, the furnace body can extrude the grinding mechanism and compress the spring, the grinding end of the grinding mechanism can make contact with the weld joint all the time through the elastic force of the spring, and therefore the weld joint is tracked, and the grinding quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding device technology, specifically a weld grinding device. Background Technology

[0002] During the construction of the gasifier, the welds inside the gasifier need to be ground. After grinding, a primer and intermediate coat are applied to prevent corrosion.

[0003] However, the traditional gasifier weld grinding has the following technical pain points: (1) manual grinding is inefficient; (2) it is difficult to adapt to the complex curved surface of the gasifier, the weld tracking accuracy is insufficient, resulting in unstable grinding quality; (3) the grinding device shakes due to vibration during grinding, resulting in unstable grinding. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a weld grinding device to solve the problems of low grinding efficiency and unstable grinding mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A weld grinding device includes a base, with columns connected to the four corners of the base's bottom surface, a side plate connected to one side of the base's top surface, and wall plates connected to both ends of the base's top surface. One side of each wall plate is connected to a side plate. A linear displacement mechanism is installed on the base between the two wall plates, and a slide is driven by the linear displacement mechanism. A first hydraulic cylinder is mounted on the slide. A through hole is provided on the side plate, through which the telescopic end of the first hydraulic cylinder passes, and an L-shaped mounting bracket is connected to the through hole. A grinding mechanism is installed on the mounting bracket, and first lifting lugs are connected to both sides of the grinding mechanism. End plates are connected to both sides of the mounting frame away from the base. The grinding mechanism can move linearly between the two end plates. A first guide rod is connected to each end plate. The end of the first guide rod away from the end plate is connected to the mounting frame. Two first lifting lugs are slidably connected to the two first guide rods respectively. Springs are sleeved on the two first guide rods. A second hydraulic cylinder is installed horizontally and a third hydraulic cylinder is installed at both ends of the base. The telescopic end of the third hydraulic cylinder extends downward from the base and is connected to a gripping plate. The telescopic end of the second hydraulic cylinder extends through the side plate and is connected to a support plate.

[0007] Preferably, the linear displacement mechanism includes two guide rails mounted on the base, a lead screw rotatably connected to two wall plates via a rotary bearing, a first motor mounted at one end of the base, the first motor being connected to one end of the lead screw via a coupling, a slide block being threadedly connected to the lead screw, the bottom surface of the slide block being provided with a sliding groove, and the slide block being slidably connected to the two guide rails via the sliding groove.

[0008] By controlling the first motor to rotate the lead screw, the slide can be driven to move linearly along the guide rail.

[0009] Preferably, the mounting bracket is connected to two second lifting lugs on both sides, and two second guide rods are connected to the slide. The two second guide rods pass through through holes and are slidably connected to the two second lifting lugs at the through ends. A limit block is connected to the end of the second guide rod away from the slide, and the diameter of the limit block is larger than the diameter of the second guide rod.

[0010] With the above technical solution, when the first hydraulic cylinder extends and drives the mounting frame to move, the mounting frame slides on the second guide rod through the second lifting lug, thereby improving the stability of the mounting frame's movement.

[0011] Preferably, the side of the support plate away from the side plate is connected to an elastic rubber block, and the surface of the rubber block is provided with a corrugated pattern.

[0012] With the above technical solution, when the second hydraulic cylinder extends and drives the support plate to contact the furnace body, the furnace body will squeeze the rubber block, causing the rubber block to deform and make maximum contact with the curved surface of the furnace body. In addition, the wavy texture on the surface of the rubber block increases the friction, thereby providing good support for the base.

[0013] Preferably, the grinding mechanism includes a housing, a first bearing plate fixedly connected to the upper part of one end of the housing, and a second bearing plate detachably connected to the lower part of one end of the housing. The second bearing plate is located below the first bearing plate. The grinding mechanism also includes a second motor installed in the housing, a transmission shaft connected to the second motor via a coupling, a drive wheel fixedly connected to the transmission shaft, a shaft rotatably connected to the first bearing plate via a rotary bearing, a driven wheel fixedly connected to the upper end of the shaft, and a grinding wheel detachably connected to the shaft. The grinding wheel is cylindrical and located between the first bearing plate and the second bearing plate. The lower end of the shaft is movably connected to the second bearing plate. The drive wheel and the driven wheel are connected by a transmission belt. Two first lifting lugs are fixedly connected to both sides of the housing, and the housing can move linearly between the two end plates.

[0014] The above technical solution involves starting the second motor, which drives the transmission shaft to rotate. Through the action of the driving wheel, transmission belt, and driven wheel, the shaft rotates, thereby driving the grinding wheel to rotate for grinding the weld.

[0015] Preferably, one end of the second bearing plate is connected to a connecting plate, which is fixed to the housing by bolts. The other end of the second bearing plate is provided with a groove, and a transmission sleeve is rotatably connected to the groove through a rotary bearing. The outer wall of the shaft located below the first bearing plate is provided with an external spline. The center hole of the grinding wheel and the transmission sleeve are both provided with internal splines that match the external splines. The spline of the grinding wheel is connected to the shaft, and the spline of the lower end of the shaft is connected to the transmission sleeve.

[0016] With the above technical solution, when it is necessary to replace the grinding wheel, remove the second bearing plate, then remove the grinding wheel from the shaft, then connect the new grinding wheel to the shaft via splines, connect the transmission sleeve on the second bearing plate to the lower spline of the shaft, and finally fix the second bearing plate to the housing with bolts to complete the replacement of the grinding wheel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The third hydraulic cylinder extends to drive the gripping plate to contact the platform, and the second hydraulic cylinder extends to drive the support plate to contact the inner wall of the furnace, so that the base can be kept stable and prevent shaking during grinding.

[0019] (2) By extending the first hydraulic cylinder, the mounting frame can be moved so that the grinding end of the grinding mechanism comes into contact with the weld. During grinding, the slide is driven to move linearly by the linear displacement mechanism, which can drive the grinding mechanism to move linearly. Since the inner wall of the furnace is curved, the furnace body will squeeze the grinding mechanism and compress the spring when the slide moves. The spring force can keep the grinding end of the grinding mechanism in contact with the weld, thereby tracking the weld and improving the grinding quality and efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting bracket and the grinding mechanism;

[0022] Figure 3 This is a cross-sectional view of the grinding mechanism;

[0023] Figure 4 This is a schematic diagram of the grinding process of the weld seams inside the gasifier according to this utility model.

[0024] In the diagram: 1-Base, 2-Column, 3-Side plate, 4-Wall panel, 5-Slide seat, 6-First hydraulic cylinder, 7-Through hole, 8-Mounting bracket, 9-First lifting lug, 10-End plate, 11-First guide rod, 12-Spring, 13-Second hydraulic cylinder, 14-Third hydraulic cylinder, 15-Grip plate, 16-Support plate, 17-Guide rail, 18-Screw, 19-First motor, 20-Second lifting lug, 21-Second guide rod, 22-Limit block, 23-Rubber block, 24-Box body, 25-First bearing plate, 26-Second bearing plate, 27-Second motor, 28-Driving wheel, 29-Shaft, 30-Driven wheel, 31-Grinding wheel, 32-Transmission belt, 33-Connecting plate, 34-Transmission sleeve, 35-Gasifier, 36-Platform. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1-4 A weld grinding device includes a base 1, with columns 2 connected to the four corners of the base 1 for support. A side plate 3 is connected to one side of the top surface of the base 1, and wall plates 4 are connected to both ends of the top surface of the base 1. One side of the wall plate 4 is connected to the side plate 3. A linear displacement mechanism is located on the base 1 between the two wall plates, and a slide block 5 is driven through the linear displacement mechanism. Specifically, the linear displacement mechanism includes two guide rails 17 mounted on the base, a lead screw 18 rotatably connected to the two wall plates via a rotary bearing, and a first motor 19 mounted at one end of the base. The first motor 19 is driven through a coupling to one end of the lead screw 18. The slide block 5 is threadedly connected to the lead screw 18, and the bottom surface of the slide block 5 has a groove, through which it is slidably connected to the two guide rails 17. Controlling the first motor 19 to drive the lead screw 18 to rotate will drive the slide block 5 to move linearly along the guide rails 17.

[0028] A first hydraulic cylinder 6 is mounted on the slide block 5. A through hole 7 is provided on the side plate 3. The telescopic end of the first hydraulic cylinder 6 passes through the through hole 7 and is connected to an L-shaped mounting bracket 8. The telescopic end of the first hydraulic cylinder 6 can move within the through hole 7. Second lifting lugs 20 are connected to both sides of the mounting bracket 8. Two second guide rods 21 are connected to the slide block 5. The two second guide rods 21 pass through the through hole 7 and are slidably connected to the two second lifting lugs 20 at their passing ends. The second guide rods can also move within the through hole 7. A limit block 22 is connected to the end of the second guide rod 21 away from the slide block. The diameter of the limit block 22 is larger than the diameter of the second guide rod 21 to prevent the mounting bracket 8 from falling off the second guide rod 21. When the first hydraulic cylinder 6 extends and drives the mounting bracket 8 to move, the mounting bracket 8 slides on the second guide rods 21 through the second lifting lugs 20, thereby improving the stability of the movement of the mounting bracket 8.

[0029] The mounting frame 8 is equipped with a grinding mechanism, which includes a housing 24, a first bearing plate 25 fixedly connected to the upper part of one end of the housing, and a second bearing plate 26 detachably connected to the lower part of one end of the housing. The second bearing plate 26 is located below the first bearing plate 25. The grinding mechanism also includes a second motor 27 installed in the housing, a transmission shaft connected to the second motor via a coupling, a drive wheel 28 fixedly connected to the transmission shaft, a shaft 29 rotatably connected to the first bearing plate 25 via a rotary bearing, a driven wheel 30 fixedly connected to the upper end of the shaft, and a grinding wheel 31 detachably connected to the shaft. The grinding wheel 31 is cylindrical and located between the first bearing plate 25 and the second bearing plate 26. The lower end of the shaft 29 is movably connected to the second bearing plate 26. The drive wheel 28 and the driven wheel 30 are connected by a transmission belt 32. Start the second motor 27 to drive the transmission shaft to rotate. Through the action of the driving wheel 28, the transmission belt 32 and the driven wheel 30, the shaft 29 is driven to rotate, thereby driving the grinding wheel 31 to rotate.

[0030] The box body 24 is connected to the two sides of the first lifting lugs 9. The mounting frame 8 is connected to the two sides of the end away from the base with end plates 10. The box body 24 can move linearly between the two end plates 10. The two end plates 10 are each connected to the first guide rod 11. The end of the first guide rod 11 away from the end plate is connected to the mounting frame 8. The two first lifting lugs 9 are slidably connected to the two first guide rods 11 respectively. The two first guide rods 11 are fitted with springs 12. The springs 12 are compressed when they are stressed, and at the same time, they give the box body 24 a reverse force so that the grinding wheel 31 can always be in contact with the weld.

[0031] The base 1 is equipped with a horizontal second hydraulic cylinder 13 and a vertical third hydraulic cylinder 14 at both ends. The telescopic end of the third hydraulic cylinder 14 extends downward from the base 1 and is connected to a gripping plate 15. The telescopic end of the second hydraulic cylinder 13 extends through a side plate 3 and is connected to a support plate 16. An elastic rubber block 23 is connected to the side of the support plate 16 away from the side plate. The surface of the rubber block 23 is corrugated. The extension of the third hydraulic cylinder 14 causes the gripping plate 15 to contact the platform, and the extension of the second hydraulic cylinder 13 causes the support plate 16 to contact the inner wall of the furnace. The furnace body compresses the rubber block 23, deforming it and maximizing contact between the rubber block 23 and the curved surface of the furnace body. The corrugated surface of the rubber block increases friction, thus providing good support for the base 1 and preventing shaking during grinding.

[0032] The working principle of this embodiment is as follows:

[0033] Before grinding the weld seam inside the furnace body 35, a working platform 36 needs to be built along the weld seam inside the furnace body 35. An oil tank and a hydraulic pump are installed on the working platform 36. The hydraulic pump is connected to the oil tank through pipelines, and the pipelines are connected to the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder respectively, so that the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder can work normally.

[0034] Before grinding, the third hydraulic cylinder 14 extends to bring the gripping plate 15 into contact with the platform, and the second hydraulic cylinder 13 extends to bring the support plate 16 into contact with the inner wall of the furnace, thus stabilizing the base 1 and preventing shaking during grinding. Then, the first hydraulic cylinder 6 extends to move the mounting frame 8, bringing the grinding wheel 31 into contact with the weld. During grinding, the second motor 27 is started to rotate the grinding wheel 31, and the first motor 19 is started to drive the slide 5 to move linearly. Since the inner wall of the furnace is curved, the furnace body squeezes the grinding wheel 31 and compresses the spring 12 when the slide 5 moves. The elastic force of the spring 12 keeps the grinding wheel 31 in contact with the weld, thus tracking the weld. By controlling the forward and reverse rotation of the second motor 27, the slide 5 moves back and forth, thus enabling efficient grinding of the weld. After grinding one section, the base 1 is moved to the next section and ground, thus dividing the furnace body into multiple sections. Through segmented grinding, all welds on the same circumference are finally ground.

[0035] Example 2

[0036] Based on Embodiment 1, one end of the second bearing plate 26 is connected to a connecting plate 33, which is fixed to the housing 24 by bolts. The other end of the second bearing plate 26 is provided with a groove, and a transmission sleeve 34 is rotatably connected in the groove through a rotary bearing. The outer wall of the shaft 29 located below the first bearing plate is provided with an external spline. The center hole of the grinding wheel 31 and the transmission sleeve 34 are both provided with internal splines that match the external splines. The spline of the grinding wheel 31 is connected to the shaft 29, and the spline of the lower end of the shaft 29 is connected to the transmission sleeve 34.

[0037] When it is necessary to replace the grinding wheel 31, remove the second bearing plate 26, then remove the grinding wheel 31 from the shaft 29, then connect the new grinding wheel spline to the shaft 29, and connect the transmission sleeve 34 on the second bearing plate 26 to the lower spline of the shaft 29. Finally, fix the second bearing plate 26 to the housing 24 with bolts to complete the replacement of the grinding wheel 31.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weld grinding device, characterized in that: The base includes a base (1), with columns (2) connected to the four corners of the bottom surface of the base (1), a side plate (3) connected to one side of the top surface of the base (1), and wall panels (4) connected to both ends of the top surface of the base (1). One side of the wall panel (4) is connected to the side plate (3). A linear displacement mechanism is provided on the base (1) between the two wall panels, and a slide (5) is connected to it via the linear displacement mechanism. A first hydraulic cylinder (6) is installed on the slide (5). A through hole (7) is provided on the side plate (3), and the telescopic end of the first hydraulic cylinder (6) passes through the through hole (7) and is connected to the through end. There is an L-shaped mounting bracket (8), on which a grinding mechanism is provided. The grinding mechanism is connected to two first lifting lugs (9) on both sides. The mounting bracket (8) is connected to two end plates (10) on both sides away from the base. The grinding mechanism can move linearly between the two end plates (10). Each end plate (10) is connected to a first guide rod (11). The end of the first guide rod (11) away from the end plate is connected to the mounting bracket (8). The two first lifting lugs (9) are slidably connected to the two first guide rods (11). Springs (12) are sleeved on the two first guide rods (11). The base (1) is equipped with a horizontal second hydraulic cylinder (13) and a vertical third hydraulic cylinder (14) at both ends. The telescopic end of the third hydraulic cylinder (14) extends downward through the base (1) and is connected to a gripping plate (15). The telescopic end of the second hydraulic cylinder (13) extends through the side plate (3) and is connected to a support plate (16).

2. The weld grinding device according to claim 1, characterized in that: The linear displacement mechanism includes two guide rails (17) mounted on the base, a lead screw (18) rotatably connected to the two wall plates via a rotary bearing, and a first motor (19) mounted on one end of the base. The first motor (19) is connected to one end of the lead screw (18) via a coupling. The slide (5) is threadedly connected to the lead screw (18). The bottom surface of the slide (5) is provided with a sliding groove, and it is slidably connected to the two guide rails (17) via the sliding groove.

3. The weld grinding device according to claim 2, characterized in that: The mounting bracket (8) is connected to two second lifting lugs (20) on both sides. Two second guide rods (21) are connected to the slide (5). The two second guide rods (21) pass through the through hole (7) and the passing end is slidably connected to the two second lifting lugs (20). The end of the second guide rod (21) away from the slide is connected to a limit block (22). The diameter of the limit block (22) is larger than the diameter of the second guide rod (21).

4. The weld grinding device according to claim 3, characterized in that: The support plate (16) is connected to an elastic rubber block (23) on the side away from the side plate, and the surface of the rubber block (23) is provided with a corrugated pattern.

5. The weld grinding device according to claim 4, characterized in that: The grinding mechanism includes a housing (24), a first bearing plate (25) fixedly connected to the upper part of one end of the housing, and a second bearing plate (26) detachably connected to the lower part of one end of the housing. The second bearing plate (26) is located below the first bearing plate (25). The grinding mechanism also includes a second motor (27) installed in the housing, a drive shaft connected to the second motor via a coupling, a drive wheel (28) fixedly connected to the drive shaft, and a shaft (29) rotatably connected to the first bearing plate (25) via a rotary bearing. A driven wheel (30) is fixedly connected to the upper end of the shaft, and a grinding wheel (31) is detachably connected to the shaft. The grinding wheel (31) is cylindrical and located between the first bearing plate (25) and the second bearing plate (26). The lower end of the shaft (29) is movably connected to the second bearing plate (26). The driving wheel (28) and the driven wheel (30) are connected by a transmission belt (32). The two first lifting lugs (9) are fixedly connected to both sides of the box (24). The box (24) can move linearly between the two end plates (10).

6. The weld grinding device according to claim 5, characterized in that: One end of the second bearing plate (26) is connected to a connecting plate (33), which is fixed to the housing (24) by bolts. The other end of the second bearing plate (26) is provided with a groove, and a transmission sleeve (34) is rotatably connected in the groove through a rotary bearing. The outer wall of the shaft (29) located below the first bearing plate is provided with an external spline. The center hole of the grinding wheel (31) and the transmission sleeve (34) are both provided with internal splines that match the external splines. The spline of the grinding wheel (31) is connected to the shaft (29), and the spline of the lower end of the shaft (29) is connected to the transmission sleeve (34).

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