Polishing device for welding steel box girder

Abstract

The utility model belongs to the technical field of steel structure machining, and particularly relates to a grinding device for welding a steel box girder, which comprises a shell, a driving motor, a grinding disc, an auxiliary holding component, a protective cover, an adjusting component, a hollow arc-shaped plate, a supporting and guiding component, a box body, an exhaust fan and a connecting hose, the grinding disc is detachably and fixedly installed on an output shaft of the driving motor, and the protective cover is installed on the shell in a sliding mode. The protective cover is reasonable in design, the protective cover can be adaptively adjusted conveniently according to actual polishing requirements, meanwhile, sweeps generated in the polishing process can be cleaned and collected, the situation that the sweeps generated in the polishing process hurt people and affect normal polishing operation of operators is effectively avoided, and the polishing efficiency is improved. And an operator can conveniently carry out adaptive adjustment of different holding modes and different holding angles according to different grinding positions.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure processing, in particular to a grinding device used for welding steel box beams. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a commonly used structural form for large-span bridges. It is mainly used to bear loads in large-span cable-supported bridges. Its span is hundreds of meters or even thousands of meters, and its cross-section has a wide and flat appearance.

[0003] Referring to the existing authorized announcement number CN 216967251 U, "grinding device for steel box beam welding", it includes a bracket, a driving mechanism, a grinding mechanism, and a cleaning mechanism. The bracket is provided with a holding piece perpendicular to the bracket, and a switch is provided on the holding piece; the driving mechanism includes an electric part and a transmission part, and the transmission part is used to connect the electric part and the driving part, and the electric part and the driving part have the same angular velocity; the grinding mechanism includes a grinding part and a driving part, and the grinding part and the driving part rotate coaxially; the cleaning mechanism includes a blowing part provided on the bracket, and the air outlet of the blowing part is facing the direction of the grinding part. It has a simple structure, convenient operation, light and convenient, and low investment cost, which greatly facilitates the grinding of plates during the welding of steel box beams, and also reduces energy consumption during the construction process, aiming to solve the technical problems of complex structure and incomplete grinding and cleaning of the steel box beam welding grinding device.

[0004] In the actual use of the above-mentioned existing patent, the waste chips generated by the grinding wheel during grinding are splashed and easily injure the operator. At the same time, the waste chips generated by grinding are blown away by an industrial hair dryer to achieve the cleaning effect. In a relatively small space, this waste chip cleaning method will interfere with the normal operation of the operator. Therefore, the utility model proposes a grinding device for steel box girder welding to solve the above-mentioned shortcomings.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to solve the shortcomings mentioned in the above background technology and proposes a grinding device for steel box girder welding.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: A grinding device for steel box beam welding, comprising a shell, a driving motor, a grinding disc, an auxiliary gripping assembly, a protective cover, an adjustment assembly, a hollow arc plate, a supporting guide assembly, a box, an exhaust fan and a connecting hose;

[0008] The driving motor is fixedly mounted on the shell, the grinding disc is detachably fixedly mounted on the output shaft of the driving motor, the protective cover is slidably mounted on the shell, the adjusting assembly is arranged in the shell and connected to the protective cover, the auxiliary holding assembly is arranged on the top of the shell, the arc plate is slidably mounted on the bottom inner wall of the shell, the supporting guide assembly is arranged in the shell and connected to the arc plate, the box body and the exhaust fan are respectively fixedly mounted on the bottom inner wall and the top inner wall of the shell, the air inlet of the exhaust fan is connected to the box body, and the arc plate and the box body are connected through a connecting hose.

[0009] Preferably, the auxiliary gripping assembly comprises a mounting seat, a rotating pin and a support rod, the mounting seat is fixedly mounted on the top of the shell, the rotating pin is rotatably mounted on the mounting seat, and the support rod is radially fixedly mounted on the rotating pin.

[0010] Preferably, the auxiliary gripping assembly also includes a sliding sleeve, two limit blocks and a plurality of limit grooves. The mounting seat is provided with a plurality of limit grooves. A sliding sleeve is installed on the support rod for damping sliding. Two limit blocks are fixedly installed on one side of the sliding sleeve close to the mounting seat, and the two limit blocks are clamped in the corresponding limit grooves.

[0011] Preferably, the support and guide assembly includes a lifting plate, a tension spring, a vertical rod and a pull ring. A vertical rod is vertically slidably installed on the top inner wall of the shell, the top end of the vertical rod extends to above the shell and is fixedly installed with a pull ring, the bottom end of the vertical rod is fixedly installed with a lifting plate, a through hole is opened on the arc plate, the lifting plate is movably installed in the through hole, and the bottom side of the lifting plate and the bottom inner wall of the shell are fixedly installed with the same tension spring.

[0012] Preferably, the support guide assembly further comprises two guide rods, and two guide rods which are arranged parallel to each other are fixedly mounted on the top inner wall and the bottom inner wall of the shell, and the two guide rods are both slidably connected to the lifting plate.

[0013] Preferably, the adjusting assembly includes an arc-shaped tooth plate, a gear, a rotating shaft, an adjusting motor, a worm and a worm wheel. The same rotating shaft is rotatably mounted on the front and rear inner walls of the shell. The rotating shaft is fixedly sleeved with gears and worm wheels. An arc-shaped tooth plate is fixedly mounted on the outer peripheral surface of the protective cover. The gear is meshed with the arc-shaped tooth plate. An adjusting motor is fixedly mounted on the top inner wall of the shell. A worm is axially fixedly connected to the output shaft of the adjusting motor, and the worm is meshed with the worm wheel.

[0014] Preferably, the bottom of the box body extends to below the shell body and is arranged in an opening, and a sealing plate is sealingly and slidably installed in the opening.

[0015] Preferably, a handle is fixedly mounted on a side of the housing away from the drive motor, so as to facilitate an operator to perform hand-held operation of the device.

[0016] Preferably, guide wheels are rotatably mounted on both the front and rear sides of the arc-shaped plate.

[0017] Preferably, a mesh plate in a hemispherical shape is fixedly installed on a position of the top inner wall of the box body corresponding to the air inlet of the exhaust fan.

[0018] The beneficial effects of the utility model are as follows: through the arranged adjustment component, the protective cover can be adjusted to a suitable position according to the actual needs of grinding; at the same time, through the cooperation of the arranged exhaust fan, the hemispherical mesh plate, the connecting hose, the hollow arc plate and the supporting guide component, the waste chips generated during the grinding process of the grinding wheel can be collected, effectively avoiding the waste chips generated during the grinding process from hurting people and enabling the operator to perform normal grinding operations; and through the arranged sealing plate, the waste chips collected in the box can be discharged conveniently; through the cooperation of the arranged auxiliary gripping component and the gripping handle, the operator can more conveniently make adaptive adjustments to different grinding positions, thereby improving the convenience of operation for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a grinding device for steel box girder welding proposed by the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of a grinding device for welding a steel box girder proposed by the utility model;

[0022] Figure 3 This is a partial three-dimensional structural schematic diagram of a grinding device for steel box girder welding proposed by the utility model;

[0023] Figure 4 This is a structural schematic diagram of part A of a grinding device for welding a steel box girder proposed by the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of an auxiliary gripping component part of a grinding device for steel box beam welding proposed by the utility model;

[0025] Figure 6 This is a three-dimensional structural schematic diagram of a supporting guide assembly, an arc plate and a guide wheel part in a grinding device for steel box beam welding proposed by the utility model;

[0026] Figure 7 The utility model is a schematic diagram of the three-dimensional structure of a protective cover in a grinding device for welding a steel box girder.

[0027] In the figure: 1. shell; 11. mounting base; 12. support rod; 13. sliding sleeve; 14. limit block; 15. limit slot; 2. driving motor; 21. grinding disc; 3. protective cover; 31. rotating shaft; 32. gear; 33. arc-shaped tooth plate; 34. adjusting motor; 35. worm; 36. worm wheel; 4. box body; 401. sealing plate; 41. exhaust fan; 42. mesh plate; 43. connecting hose; 44. arc-shaped plate; 441. guide wheel; 5. lifting plate; 51. tension spring; 52. guide rod; 53. vertical rod. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-7A grinding device for steel box beam welding, comprising a shell 1, a driving motor 2, a grinding disc 21, a protective cover 3, a hollow arc plate 44, a box 4, an exhaust fan 41 and a connecting hose 43, the driving motor 2 is fixedly mounted on the shell 1, the grinding disc 21 is detachably fixedly mounted on the output shaft of the driving motor 2, the protective cover 3 is slidably mounted on the shell 1, the same rotating shaft 31 is rotatably mounted on the inner walls of the front and rear sides of the shell 1, a gear 32 and a worm gear 36 are fixedly sleeved on the rotating shaft 31, an arc-shaped tooth plate 33 is fixedly mounted on the outer peripheral surface of the protective cover 3, and the gear 32 is meshed with the arc-shaped tooth plate 33 An adjusting motor 34 is fixedly mounted on the inner wall of the top of the housing 1, and a worm 35 is axially fixedly connected to the output shaft of the adjusting motor 34. The worm 35 is meshed with the worm wheel 36, and the protective cover 3 can be adjusted as needed. A mounting seat 11 is fixedly mounted on the top of the housing 1, and a rotating pin is rotatably mounted on the mounting seat 11. A support rod 12 is radially fixedly mounted on the rotating pin. A plurality of limit grooves 15 are provided on the mounting seat 11, and a sliding sleeve 13 is damped and slidably mounted on the support rod 12. Two limit blocks 14 are fixedly mounted on one side of the sliding sleeve 13 close to the mounting seat 11, and the two limit blocks 14 are clamped in the corresponding limit grooves 15. The arc plate 44 is slidably mounted on the bottom inner wall of the shell 1, and a vertical rod 53 is vertically slidably mounted on the top inner wall of the shell 1. The top of the vertical rod 53 extends to the top of the shell 1 and is fixedly mounted with a pull ring. The bottom end of the vertical rod 53 is fixedly mounted with a lifting plate 5. A through hole is opened on the arc plate 44, and the lifting plate 5 is movably mounted in the through hole. The bottom side of the lifting plate 5 and the bottom inner wall of the shell 1 are fixedly mounted with the same tension spring 51, which can provide support and automatic adjustment for the arc plate 44. The casing 1 has two guide rods 52 arranged parallel to each other, which are fixedly mounted on the top inner wall and the bottom inner wall of the casing 1. The two guide rods 52 are slidably connected to the lifting plate 5, and can provide guidance for the lifting plate 5, so that it can follow the movement of the curved plate 44 to achieve stable lifting. The box body 4 and the exhaust fan 41 are respectively fixedly mounted on the bottom inner wall and the top inner wall of the casing 1. The air inlet of the exhaust fan 41 is connected to the box body 4. The curved plate 44 and the box body 4 are connected by a connecting hose 43. A handle is fixedly mounted on the side of the casing 1 away from the driving motor 2, which is convenient for the operator to hand-hold the device.

[0030] In this embodiment, the bottom of the box body 4 extends to the bottom of the shell 1 and is set as an opening, and a sealing plate 401 is sealingly and slidably installed in the opening to facilitate the discharge of waste chips collected in the box body 4 while ensuring that the working effect of the exhaust fan 41 is not affected.

[0031] In this embodiment, guide wheels 441 are rotatably mounted on both the front and rear sides of the arc plate 44 to provide guidance for the arc plate 44, thereby facilitating the operator to push the device along the position to be polished without picking it up.

[0032] In this embodiment, a hemispherical mesh plate 42 is fixedly installed on the top inner wall of the box 4 at a position corresponding to the air inlet of the exhaust fan 41, which can prevent waste chips entering the box 4 from being sucked into the exhaust fan 41, thereby better realizing the collection of waste chips.

[0033] Working principle: When in use, first turn on the power supply, control the limit block 14 to disengage from the limit groove 15 through the sliding sleeve 13, and adjust the support rod 12 to an angle suitable for holding, and then control the limit block 14 through the sliding sleeve 13 to insert it into the corresponding limit groove 15 to achieve limiting, and then adjust the motor 34, gear 32, worm 35, arc-shaped toothed plate 33, rotating shaft 31 and worm wheel 36 to adjust the protective cover 3 to a protective position that does not affect normal grinding, and then pull the vertical rod 53 upward through the pull ring to control the lifting plate 5 to move upward, so that the arc plate 44 moves upward, and release the pull ring after the guide wheel 441 maintains stable contact with the surface to be polished, so that the guide wheel 441 can roll stably in the plane where the grinding position is located under the action of the tension spring 51, and then start the drive motor 2, and the drive motor 2 The grinding disc 21 is controlled to rotate, and the device is controlled to move through the support rod 12 and the handle. At the same time, with the cooperation of the guide wheel 441, the operator can directly control the device to move along the plane where the grinding surface is located. The waste chips generated during the high-speed rotation of the grinding wheel can be intercepted and shielded with the cooperation of the arc plate 44 and the protective cover 3, which can prevent the waste chips from hurting the operator. The exhaust fan 41 is started, and the exhaust fan 41 draws out the air in the box 4, so that the waste chips on the side of the hollow arc plate 44 close to the grinding wheel can pass through the hollow arc plate 44 and the connecting hose 43 into the box 4, and then are stored in the box 4 under the interception of the hemispherical mesh plate 42. After use, the sealing plate 401 is removed to discharge the waste chips collected in the box 4.

[0034] The above is a detailed introduction to a grinding device for steel box girder welding provided by the utility model. This article uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A grinding device for steel box girder welding, characterized in that: It comprises a housing (1), a driving motor (2), a grinding disc (21), an auxiliary gripping assembly, a protective cover (3), an adjusting assembly, a hollow arc-shaped plate (44), a supporting guide assembly, a box (4), an exhaust fan (41) and a connecting hose (43); The drive motor (2) is fixedly mounted on the housing (1); the grinding disc (21) is detachably fixedly mounted on the output shaft of the drive motor (2); the protective cover (3) is slidably mounted on the housing (1); the adjustment component is arranged in the housing (1) and is connected to the protective cover (3); the auxiliary holding component is arranged on the top of the housing (1); the arc plate (44) is slidably mounted on the bottom inner wall of the housing (1); the support guide component is arranged in the housing (1) and is connected to the arc plate (44); the box (4) and the exhaust fan (41) are respectively fixedly mounted on the bottom inner wall and the top inner wall of the housing (1); the air inlet of the exhaust fan (41) is connected to the box (4); and the arc plate (44) and the box (4) are connected via a connecting hose (43).

2. A grinding device for steel box girder welding according to claim 1, characterized in that: The auxiliary gripping assembly comprises a mounting seat (11), a rotating pin and a support rod (12); the mounting seat (11) is fixedly mounted on the top of the housing (1); the rotating pin is rotatably mounted on the mounting seat (11); and the support rod (12) is radially fixedly mounted on the rotating pin.

3. A grinding device for steel box girder welding according to claim 2, characterized in that: The auxiliary gripping assembly further comprises a sliding sleeve (13), two limiting blocks (14) and a plurality of limiting grooves (15); the mounting seat (11) is provided with a plurality of limiting grooves (15); a sliding sleeve (13) is installed on the support rod (12) in a damping sliding manner; two limiting blocks (14) are fixedly installed on one side of the sliding sleeve (13) close to the mounting seat (11); and the two limiting blocks (14) are clamped in the corresponding limiting grooves (15).

4. A grinding device for steel box girder welding according to claim 1, characterized in that: The support and guide assembly comprises a lifting plate (5), a tension spring (51), a vertical rod (53) and a pull ring. The vertical rod (53) is vertically slidably mounted on the top inner wall of the shell (1). The top end of the vertical rod (53) extends to the top of the shell (1) and is fixedly mounted with a pull ring. The bottom end of the vertical rod (53) is fixedly mounted with the lifting plate (5). A through hole is opened on the arc plate (44). The lifting plate (5) is movably mounted in the through hole. The bottom side of the lifting plate (5) and the bottom inner wall of the shell (1) are fixedly mounted with the same tension spring (51).

5. A grinding device for steel box girder welding according to claim 4, characterized in that: The support guide assembly also includes two guide rods (52). Two guide rods (52) are fixedly mounted on the top inner wall and the bottom inner wall of the shell (1) and are arranged parallel to each other. The two guide rods (52) are both slidably connected to the lifting plate (5).

6. A grinding device for steel box girder welding according to claim 1, characterized in that: The adjustment component comprises an arc-shaped toothed plate (33), a gear (32), a rotating shaft (31), an adjustment motor (34), a worm (35) and a worm wheel (36); the same rotating shaft (31) is rotatably mounted on the inner walls of the front and rear sides of the housing (1); the gear (32) and the worm wheel (36) are fixedly sleeved on the rotating shaft (31); an arc-shaped toothed plate (33) is fixedly mounted on the outer peripheral surface of the protective cover (3); the gear (32) meshes with the arc-shaped toothed plate (33); an adjustment motor (34) is fixedly mounted on the top inner wall of the housing (1); a worm (35) is axially fixedly connected to the output shaft of the adjustment motor (34); the worm (35) meshes with the worm wheel (36).

7. A grinding device for steel box girder welding according to claim 1, characterized in that: The bottom of the box body (4) extends to below the shell (1) and is arranged in an open manner, and a sealing plate (401) is sealingly and slidably installed in the opening.

8. The grinding device for steel box girder welding according to claim 1, characterized in that: A handle is fixedly mounted on the side of the housing (1) away from the drive motor (2), making it convenient for an operator to hand-hold the device.

9. A grinding device for steel box girder welding according to claim 1, characterized in that: Guide wheels (441) are rotatably mounted on both the front and rear sides of the arc-shaped plate (44).

10. A grinding device for steel box girder welding according to claim 1, characterized in that: A mesh plate (42) arranged in a hemispherical shape is fixedly mounted on a position of the top inner wall of the box body (4) corresponding to the air inlet of the exhaust fan (41).

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