Movable weld metal polishing device

Abstract

The utility model relates to a movable weld metal polishing device which comprises a platform and a polishing moving trolley, the platform is matched with the polishing moving trolley, the polishing moving trolley comprises a balance weight seat and a driving mechanism, bottom wheel frames are oppositely arranged on the two sides of the lower surface of the balance weight seat, and a plurality of electric wheels are arranged at the bottoms of the bottom wheel frames. Side wheel frames are arranged on the bottom wheel frames through telescopic mechanisms, a plurality of limiting wheels are arranged on the side wheel frames, the limiting wheels on the two sides are oppositely and inwards arranged, a rotating shaft is connected to the balance weight seat through a lifting mechanism, grinding rollers are arranged on the two sides of the rotating shaft, and the driving mechanism is connected between the rotating shaft and the lifting mechanism and can drive the grinding rollers to rotate through the rotating shaft. The device can move in the length direction of the beam column of the box type steel structure and grind welding metal on the protruding portion on the side face of the beam column of the box type steel structure, the grinding efficiency is high, the labor force is relieved, and the labor cost is further saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding devices, and specifically relates to a mobile weld metal grinding device. Background Technology

[0002] Box-type steel structure beams and columns are structural components widely used in the construction and engineering fields. They are formed by welding multiple steel plates to create a closed box-shaped cross-section. Specifically, they are constructed by welding four side steel plates and two end steel plates. For some box-type steel structure beams and columns with high quality requirements, bevels are machined on adjacent steel plates during erection. This allows for the formation of a "V"-shaped weld during splicing, thereby increasing the welding area and improving the welding quality.

[0003] However, after welding, the weld metal inside the weld seam typically bulges outward along the weld height. This bulge often contains a large amount of surface defects such as weld slag, porosity, and undercut, which not only affects the aesthetics of the weld but also causes stress concentration, adversely impacting weld quality. Therefore, after welding, it is necessary to use a grinding device to grind the weld metal on the outer side of the weld seam.

[0004] It should also be noted that since the weld length on the four sides is generally quite long and is visible during use, it is especially necessary to grind the weld metal on the four sides. The two end faces can be selectively ground depending on the specific situation.

[0005] In existing technologies, workers typically use hand grinders to grind the weld along its length. However, box-type steel structure beams and columns are generally quite long, requiring a large grinding length, making manual grinding inefficient and labor-intensive. Utility Model Content

[0006] This utility model provides a mobile weld metal grinding device. The box-type steel structure beams and columns are placed flat on the platform. Under the limiting and guiding action of the limiting wheels on both sides, the electric wheel drives the counterweight to move along the length of the box-type steel structure beams and columns, which in turn drives the grinding roller to move along the length of the weld. It can grind the weld metal of the protruding part, with high grinding efficiency, reducing manual labor and saving labor costs.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A mobile weld metal grinding device includes a platform and a grinding carriage. The platform is matched with the grinding carriage. The grinding carriage includes a counterweight and a drive mechanism. The lower surface of the counterweight is provided with two opposing wheel frames. The bottom of the wheel frames is provided with multiple electric wheels. Each wheel frame is provided with a side wheel frame via a telescopic mechanism. The side wheel frames are provided with multiple limiting wheels. The limiting wheels on both sides are arranged inwards relative to each other. The counterweight is connected to a rotating shaft via a lifting mechanism. Grinding rollers are provided on both sides of the rotating shaft. The grinding rollers are located between the two wheel frames and face the limiting wheels. The drive mechanism is connected between the rotating shaft and the lifting mechanism. The drive mechanism can drive the grinding rollers to rotate via the rotating shaft.

[0009] Furthermore, the lifting mechanism includes a slide rod that slides through the counterweight seat. The slide rod has a U-shaped structure. A telescopic rod is connected between the top of the slide rod and the top of the counterweight seat. The two ends of the rotating shaft are respectively connected to the lower ends of the two sides of the slide rod. The driving mechanism is connected between the slide rod and the rotating shaft.

[0010] Furthermore, the drive mechanism includes a motor mounted on a slide bar and a driven bevel gear mounted on a rotating shaft, wherein the driven bevel gear meshes with a driving bevel gear connected to the output shaft of the motor.

[0011] Furthermore, the telescopic mechanism includes a second sliding rod that slides through the bottom wheel frame. The second sliding rod has a U-shaped structure. A second telescopic rod is connected between the outer end of the second sliding rod and the outer side of the bottom wheel frame. The side wheel is mounted on the inner end of the second sliding rod.

[0012] Furthermore, the counterweight base is provided with a water cavity, and a diversion pipe is provided at the bottom of the water cavity. Multiple nozzles are provided on the diversion pipe, and the diversion pipe is connected to an exhaust pipe. The exhaust pipe extends out of the water cavity and is connected to an exhaust fan located at the top of the counterweight base. The exhaust fan is connected to an air intake horn located at the middle of the bottom of the counterweight base through an air intake pipe.

[0013] Furthermore, a water inlet is provided at the top of the water cavity.

[0014] Furthermore, a drain valve is provided at the bottom of the water cavity.

[0015] Furthermore, the upper surface of the platform is provided with a support platform, the width of which is less than the distance between the two limiting wheels.

[0016] Furthermore, the electric wheel includes a hub motor, which is mounted on a base wheel frame, and an outer wheel is also mounted on the hub motor.

[0017] Furthermore, the limiting wheel includes a hub motor, which is mounted on a side wheel frame, and an outer wheel is also mounted on the hub motor.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] After placing the box-type steel structure beams and columns flat on the platform, the grinding trolley straddles the box-type steel structure beams and columns. The telescopic mechanisms on both sides drive the limit wheels on both sides to move to contact the two sides of the box-type steel structure beams and columns, aligning the grinding rollers vertically with the weld seams on both sides of the beams and columns. The drive mechanism drives the grinding rollers to rotate at high speed, and the lifting mechanism moves the lower side of the grinding rollers to near or in contact with the upper surface of the box-type steel structure beams and columns. An electric wheel drives the counterweight to move slowly along the length of the box-type steel structure beams and columns, thereby moving the grinding rollers along the length of the weld seams. During this movement, the grinding efficiency is high, reducing manual labor and saving labor costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model (the dotted lines in the diagram represent the beams and columns of the box-type steel structure).

[0021] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0022] Figure 3 for Figure 1 Local structural diagram of the B-axis;

[0023] In the diagram: 1. Platform; 2. Electric wheel; 3. Bottom wheel frame; 4. Slide rod two; 5. Telescopic rod two; 6. Side wheel frame; 7. Limiting wheel; 8. Grinding roller; 9. Rotating shaft; 10. Slide rod one; 11. Drain valve; 12. Diverter pipe; 13. Nozzle; 14. Exhaust pipe; 15. Water chamber; 16. Water inlet; 17. Telescopic rod one; 18. Air inlet pipe; 19. Exhaust fan; 20. Counterweight seat; 21. Support platform; 22. Passive bevel gear; 23. Active bevel gear; 24. Motor; 25. Intake horn. Detailed Implementation

[0024] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0025] See Figures 1 to 3This utility model provides a mobile weld metal grinding device, including a platform 1 and a grinding mobile carriage. The platform 1 is matched with the grinding mobile carriage. The grinding mobile carriage includes a counterweight 20 and a drive mechanism. The two sides of the lower surface of the counterweight 20 are fixedly provided with bottom wheel frames 3. The bottom of the bottom wheel frame 3 is provided with multiple electric wheels 2. The bottom wheel frame 3 is provided with side wheel frames 6 through a telescopic mechanism. The side wheel frames 6 are provided with multiple limit wheels 7. The limit wheels 7 on both sides are arranged inward relative to each other. The counterweight 20 is connected to a rotating shaft 9 through a lifting mechanism. Grinding rollers 8 are provided on both sides of the rotating shaft 9. When the mobile carriage is placed on the platform 1, the rotating shaft 9 and the grinding rollers 8 are parallel to the platform 1. The grinding rollers 8 are made of the same diamond material as the grinding wheels in the prior art. The grinding rollers 8 are located between the bottom wheel frames 3 on both sides and face the limit wheels 7. The drive mechanism is connected between the rotating shaft 9 and the lifting mechanism. The drive mechanism can drive the grinding rollers 8 to rotate through the rotating shaft 9.

[0026] During grinding, the box-type steel structure beams and columns are placed flat on platform 1. The grinding trolley is then placed across the box-type steel structure beams and columns, parallel to their length, with the beams and columns aligned with the center of the counterweight 20. The grinding rollers 8 on both sides are vertically aligned with the welds on both sides of the box-type steel structure beams and columns. The telescopic mechanisms on both sides synchronously drive the limiting wheels 7 on both sides to move inward relative to each other until the limiting wheels 7 contact the sides of the box-type steel structure beams and columns. The drive mechanism drives the rotating shaft 9 to rotate at high speed on the lifting mechanism. The rotating shaft 9 drives the grinding rollers 8 to rotate at high speed. The lifting mechanism then moves the grinding rollers 8 down to near or in contact with the upper surface of the box-type steel structure beams and columns. Under the action of the counterweight 20... The electric wheel 2 is kept pressed against the upper surface of the platform 1. The electric wheel 2 drives the counterweight 20 to move slowly along the length of the box-type steel structure beam and column, which in turn drives the grinding roller 8 to move along the length of the weld. During the movement, the weld metal of the raised part on the upper surface of the box-type steel structure beam and column can be ground. The grinding efficiency is high, which reduces manual labor and saves labor costs. In addition, after grinding the upper surface of the box-type steel structure beam and column, the box-type steel structure beam and column can be flipped over to grind the entire side of the box-type steel structure beam and column. In addition, as a preferred option, the rotation direction of the grinding roller 8 can be set to be opposite to the rotation direction of the electric wheel 2. The purpose of this is to enable the grinding roller 8 to grind the weld metal more thoroughly.

[0027] In addition, by setting a suitable length for the grinding roller 8, and because the telescopic mechanism can adjust the distance between the limit wheels 7 on both sides, and the lifting mechanism can adjust the height of the grinding roller 8, this utility model can also be applied to grinding box-type steel structure beams and columns of various specifications and sizes.

[0028] Preferably, the lifting mechanism includes a slide rod 10 that slides through the counterweight seat 20. The slide rod 10 has a U-shaped structure. A telescopic rod 17 is connected between the top of the slide rod 10 and the top of the counterweight seat 20. The telescopic rod 17 is fixedly installed on the top of the counterweight seat 20. The telescopic end of the telescopic rod 17 is connected to the top inside the slide rod 10. The telescopic rod 17 is an electric actuator. The two ends of the rotating shaft 9 are respectively connected to the lower ends on both sides of the slide rod 10. The drive mechanism is connected between the slide rod 10 and the rotating shaft 9.

[0029] When the telescopic rod 17 is shortened, it can drive the slide rod 10 to slide downward on the counterweight seat 20. The slide rod 10 can drive the drive mechanism and the rotating shaft 9 to descend. The rotating shaft 9 can drive the two grinding rollers 8 to descend. When the telescopic rod 17 is extended, it drives the grinding rollers 8 to rise away from the box-type steel structure beams and columns.

[0030] Preferably, the drive mechanism includes a motor 24 fixedly mounted on the slide bar 10 and a passive bevel gear 22 fixedly mounted on the rotating shaft 9. The passive bevel gear 22 meshes with an active bevel gear 23, and the active bevel gear 23 is fixedly connected to the output shaft of the motor 24.

[0031] The motor 24 drives the active bevel gear 23 to rotate, and the active bevel gear 23 drives the rotating shaft 9 to rotate at high speed on the lower end of the slide bar 10 through the passive bevel gear 22. The rotating shaft 9 can drive the grinding roller 8 to rotate at high speed.

[0032] Preferably, the telescopic mechanism includes a slide rod 4 that slides through the bottom wheel frame 3. The slide rod 4 has a U-shaped structure. A telescopic rod 5 is connected between the outer end of the slide rod 4 and the outer side of the bottom wheel frame 3. The telescopic rod 5 is fixed on the outer side wall of the bottom wheel frame 3. The telescopic end of the telescopic rod 5 is connected to the outer end of the slide rod 4. The telescopic rod 5 is an electric actuator. The side wheel frame 6 is located on the inner end of the slide rod 4.

[0033] When the telescopic rod 17 is shortened, it can drive the slide rod 4 to slide inward on the bottom wheel frame 3, so that the limiting wheel 7 contacts the box-type steel structure beam and column. When the telescopic rod 17 is extended, it will drive the limiting wheel 7 away from the box-type steel structure beam and column.

[0034] Preferably, the counterweight 20 is provided with a water chamber 15, and a diversion pipe 12 is provided at the bottom of the water chamber 15. Multiple nozzles 13 are provided on the diversion pipe 12. The diversion pipe 12 is connected to an exhaust pipe 14. The exhaust pipe 14 extends out of the water chamber 15 and is connected to an exhaust fan 19 located at the top of the counterweight 20. The exhaust fan 19 is connected to an air intake horn 25 located at the middle of the bottom of the counterweight 20 through an air intake pipe 18.

[0035] During polishing, the exhaust fan 19 draws in dust and other pollutants, which are then sucked into the air intake vent 25 and sprayed into the water through the air intake pipe 18, exhaust fan 19, exhaust pipe 14, diverter pipe 12 and nozzle 13. This process helps to suppress air pollution during polishing. The water mixture effectively adsorbs pollutants and has a large capacity.

[0036] Preferably, the top of the water cavity 15 is provided with a water inlet 16 for adding water and venting air into the water cavity 15.

[0037] Preferably, a drain valve 11 is provided at the bottom of the water cavity 15 to drain the water in the water cavity 15.

[0038] Preferably, the upper surface of the platform 1 is provided with a support platform 21. The width of the support platform 21 is less than the distance between the two limit wheels 7. Placing the box-type steel structure beams and columns on the support platform 21 can avoid unevenness of the box-type steel structure beams and columns caused by uneven welding metal when the lower surface is not polished and the box-type steel structure beams and columns are placed directly on the platform 1.

[0039] Preferably, the electric wheel 2 includes a hub motor, which is mounted on the base wheel frame 3. The hub motor is also equipped with an outer wheel, which can be a rubber wheel. The application of the hub motor and the outer wheel is existing technology, and how to use them will not be described in detail here.

[0040] Preferably, the limiting wheel 7 includes a hub motor, which is mounted on the side wheel frame 6. The hub motor also has an outer wheel, which can be a rubber wheel. The use of the hub motor and the outer wheel is existing technology, and how to use them will not be described in detail here.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mobile weld metal grinding device, characterized in that: The system includes a platform and a grinding mobile cart. The platform is matched with the grinding mobile cart, which includes a counterweight and a drive mechanism. The lower surface of the counterweight is provided with two opposing wheel frames on both sides. The bottom of the wheel frames is provided with multiple electric wheels. Each wheel frame is provided with a side wheel frame via a telescopic mechanism. The side wheel frames are provided with multiple limit wheels. The limit wheels on both sides are arranged inwards relative to each other. The counterweight is connected to a rotating shaft via a lifting mechanism. Grinding rollers are provided on both sides of the rotating shaft. The grinding rollers are located between the two wheel frames and face the limit wheels. The drive mechanism is connected between the rotating shaft and the lifting mechanism. The drive mechanism can drive the grinding rollers to rotate via the rotating shaft.

2. The mobile weld metal grinding device according to claim 1, characterized in that: The lifting mechanism includes a slide rod that slides through the counterweight seat. The slide rod has a U-shaped structure. A telescopic rod is connected between the top of the slide rod and the top of the counterweight seat. The two ends of the rotating shaft are respectively connected to the lower ends of the two sides of the slide rod. The driving mechanism is connected between the slide rod and the rotating shaft.

3. The mobile weld metal grinding device according to claim 2, characterized in that: The drive mechanism includes a motor mounted on a slide bar and a driven bevel gear mounted on a rotating shaft. The driven bevel gear meshes with a driving bevel gear connected to the output shaft of the motor.

4. A mobile weld metal grinding device according to any one of claims 1 to 3, characterized in that: The telescopic mechanism includes a slide rod 2 that slides through the bottom wheel frame. The slide rod 2 has a U-shaped structure. A telescopic rod 2 is connected between the outer end of the slide rod 2 and the outer side of the bottom wheel frame. The side wheel is mounted on the inner end of the slide rod 2.

5. A mobile weld metal grinding device according to any one of claims 1 to 3, characterized in that: The counterweight base is provided with a water cavity, and a diversion pipe is provided at the bottom of the water cavity. Multiple nozzles are provided on the diversion pipe. The diversion pipe is connected to an exhaust pipe. The exhaust pipe extends out of the water cavity and is connected to an exhaust fan located at the top of the counterweight base. The exhaust fan is connected to an air intake horn located at the middle of the bottom of the counterweight base through an air intake pipe.

6. A mobile weld metal grinding device according to claim 5, characterized in that: The water cavity is equipped with a water inlet at the top.

7. A mobile weld metal grinding device according to claim 5, characterized in that: A drain valve is provided at the bottom of the water chamber.

8. A mobile weld metal grinding device according to any one of claims 1 to 3, characterized in that: The platform has a support on its upper surface, and the width of the support is less than the distance between the two limit wheels.

9. A mobile weld metal grinding device according to any one of claims 1 to 3, characterized in that: The electric wheel includes a hub motor, which is mounted on a base wheel frame, and an outer wheel is also mounted on the hub motor.

10. A mobile weld metal grinding device according to any one of claims 1 to 3, characterized in that: The limiting wheel includes a hub motor, which is mounted on a side wheel frame, and an outer wheel is also mounted on the hub motor.

Images