Scraper structure for rotary table of engineering machinery

Abstract

The utility model relates to a mud scraping plate structure for an engineering machinery rotary table, and belongs to the technical field of engineering machinery, the mud scraping plate structure comprises a mud scraping plate, the mud scraping plate comprises a mounting plate, reinforcing ribs and a scraping plate, the mounting plate is connected with a slewing bearing and a rotating platform at the top of the slewing bearing through bolts, and the rotating platform is connected with the reinforcing ribs through bolts. The outer ring of the slewing bearing and the mounting plate of the mud scraping plate are simultaneously connected through the bolts, so that the problem that the mud scraping plate needs to be additionally provided with mounting holes or welded is solved, the radian of the mounting plate is consistent with that of the outer ring of the slewing bearing, the slewing bearing does not need to be perforated again, and a certain interval is reserved between the mud scraping plate and the slewing bearing. The problem that installation cannot be achieved due to the fact that the space is limited when the mud scraping plate is installed is solved, and the mud scraping plate is driven to clean sundries above the supporting bottom frame in the rotation process of the slewing bearing.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of construction machinery, and particularly relates to a mud scraping plate structure for a turntable of construction machinery. Background Art

[0002] The statements herein only provide background art related to the present disclosure and do not necessarily constitute prior art.

[0003] During the operation of an excavator, sundries such as soil and stones often accumulate above the underframe, resulting in damage to related components on the slewing bearing, causing pipeline damage, and further causing the slewing function of the hydraulic excavator to fail; hardened soil blocks that have not been cleaned for a long time are more difficult to clean, occupying the operation time. Therefore, a mud scraping plate is needed to clean the sundries. However, for the existing mud scraping plate fixedly installed on the turntable, when the crawler plate is too wide, there is limited space for installing the mud scraping plate and it cannot be installed. At the same time, additional installation holes or welding operations are required during the installation process, and additional operations are needed to meet the installation conditions. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a mud scraping plate structure for a turntable of construction machinery, which can solve at least one of the above technical problems.

[0005] To achieve the above purpose, one or more embodiments of the present disclosure provide a mud scraping plate structure for a turntable of construction machinery, including a mud scraping plate. The mud scraping plate includes a mounting plate, a reinforcing rib, and a scraping plate. The mounting plate is connected to the slewing bearing of the construction machinery by bolts. The bottom of the scraping plate is a plate with a square cross-section, and the top of the scraping plate is a plate with a rectangular cross-section. The short side of the rectangle is consistent with the width of the mounting plate. The scraping plate is welded to the middle position perpendicular to the mounting plate. The reinforcing ribs are arranged on both sides of the scraping plate. After the scraping plate is installed, a certain interval is reserved between the slewing bearing and the outer side of the underframe.

[0006] Further, the slewing bearing includes an inner ring and an outer ring, and a ball is arranged between the inner ring and the outer ring to enable the inner ring and the outer ring to rotate.

[0007] Further, bolt holes are provided on the outer ring, and the rotating platform at the top of the slewing bearing and the mounting plate below the slewing bearing are connected by bolts at the same time.

[0008] Further, the connecting disc at the bottom of the inner ring is bolted to the supporting underframe.

[0009] Further, the length of the square at the bottom of the scraping plate is greater than the width of the mounting plate.

[0010] Further, the reinforcing rib is a plate with a right trapezoidal cross-section. The right-angled waist of the right trapezoid is perpendicularly fixed to the scraping plate, and the lower base of the right trapezoid is welded and fixed to the mounting plate.

[0011] Further, the mounting plate is an arc-shaped member, and the radian of the mounting plate is the same as that of the outer ring of the slewing bearing.

[0012] Further, the long arc side of the mounting plate fits with the outer edge of the outer ring of the slewing bearing.

[0013] Further, bolt holes with the same spacing as the through holes of the outer ring of the slewing bearing are provided on the mounting plate.

[0014] Further, a sealing strip is provided between the inner ring and the outer ring.

[0015] The beneficial effects of the above one or more technical solutions are as follows:

[0016] In the present disclosure, by connecting the rotating platform, the outer ring of the slewing bearing, and the mounting plate of the sludge scraper with bolts at the same time, the problem of additional mounting holes or welding required for the sludge scraper is reduced. The mounting plate is set to have the same radian as the outer ring of the slewing bearing, so that the slewing bearing does not need to be re-opened. A certain interval is reserved between the scraper and the slewing bearing to solve the problem that the installation of the sludge scraper cannot be realized due to limited space during installation. During the rotation of the slewing bearing, the sludge scraper is driven to clean the sundries above the support chassis at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute a limitation to this application.

[0018] Figure 1 is a three-dimensional view of the overall structure in one or more embodiments of the present disclosure;

[0019] Figure 2 is a three-dimensional view of the sludge scraper in one or more embodiments of the present disclosure;

[0020] Figure 3 is in one or more embodiments of the present disclosure Figure 1 enlarged view of part A;

[0021] In the figure, 1, support chassis; 2, slewing bearing; 3, sludge scraper; 4, rotating platform; 5, mounting plate; 6, reinforcing rib; 7, scraper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As introduced in the background art, in the case of an overly wide crawler plate for the existing sludge scraper, the installation of the sludge scraper is limited by space and cannot be realized. At the same time, additional mounting holes or welding operations are required during the installation process, and additional operations are needed to meet the installation conditions.

[0023] To solve the above technical problems, the present utility model provides a mud scraping plate structure for an engineering machinery turntable. By connecting the rotating platform, the slewing bearing, and the mounting plate of the mud scraping plate together with bolts, the problem of additional mounting holes or welding required during the installation of the mud scraping plate is reduced. The mounting plate of the mud scraping plate is designed to have exactly the same curvature as the outer ring of the slewing bearing, avoiding the problem of re-drilling holes in the slewing bearing. And a certain gap is reserved between the scraping plate and the outer sides of the slewing bearing and the chassis, solving the problem that the installation of the mud scraping plate cannot be achieved under space constraints.

[0024] As Figures 1 - 3 shown, this embodiment provides a mud scraping plate structure for an engineering machinery turntable, including a mud scraping plate 3. The mud scraping plate 3 includes a mounting plate 5, a reinforcing rib 6, and a scraping plate 7. The mounting plate 5 is connected to the slewing bearing 2 of the engineering machinery by bolts, as Figure 3 shown, the scraping plate 7 is an overall plate structure similar to an "L" shape.

[0025] Specifically, the bottom of the scraping plate 7 is a plate with a square cross-section and a certain gap is reserved from the outer side of the slewing bearing 2, solving the problem that the mud scraping plate 3 cannot be installed due to the excessive width of the crawler plate occupying space. The top of the scraping plate 7 is a plate with a rectangular cross-section, and the short side of the rectangle is the same width as the mounting plate 5. The scraping plate 7 is vertically arranged with the mounting plate 5. Reinforcing ribs 6 are provided on both sides of the scraping plate 7. The reinforcing ribs 6 are plates with a right trapezoidal cross-section. The right-angled waist of the right trapezoid is vertically fixed to the scraping plate 7, and the lower bottom of the right trapezoid is welded and fixed to the mounting plate 5.

[0026] The slewing bearing 2 includes an inner ring and an outer ring. There are balls arranged between the inner ring and the outer ring to enable the inner ring and the outer ring to rotate. Bolt holes are provided on the outer ring, and the rotating platform 4 at the top of the slewing bearing 2 and the mounting plate 5 below the slewing bearing 2 are connected by bolts simultaneously.

[0027] The long arc side of the mounting plate 5 fits with the outer edge of the outer ring of the slewing bearing 2. Bolt holes with the same pitch as the through holes on the outer ring of the slewing bearing 2 are provided on the mounting plate 5. The mounting plate 5 is an arc-shaped part, and the curvature of the mounting plate 5 is the same as that of the outer ring of the slewing bearing 2. And the height of the square plate at the bottom of the scraping plate 7 is less than the distance between the outer ring of the slewing bearing 2 and the support chassis 1. Furthermore, the slewing bearing 2 does not need to be re-drilled, reducing the problem of additional mounting holes or welding required during the installation of the mud scraping plate 3.

[0028] There are balls between the inner ring and the outer ring of the slewing bearing 2 for rotational connection between the inner ring and the outer ring, so as to effectively bear the load and achieve smooth rotational motion. In addition, a sealing belt is designed and installed between the inner ring and the outer ring to prevent external dust, moisture, and other harmful substances from entering the interior of the slewing bearing, thereby protecting the internal balls and other precision components from pollution and corrosion.

[0029] The mounting plate 5 and the scraping plate 7 are fixed by welding. The length of the square plate at the bottom of the scraping plate 7 is greater than the width of the mounting plate 5, so that the mud scraping plate 3 can better clean the sundries accumulated on the support chassis 1 of the excavator, preventing the sundries from damaging the relevant components on the slewing bearing 2.

[0030] Working principle:

[0031] During the working process of the excavator, sundries such as soil and stones will accumulate above the chassis. The mud scraping plate 3 is connected to the bolt holes on the outer ring of the slewing bearing 2 and the rotating platform 4 through bolts. During the rotation of the slewing bearing 2, the mud scraping plate 3 is driven to clean the sundries above the support chassis 1 at the same time. The bolt mounting holes on the mounting plate 5 to which the mud scraping plate 3 is connected have the same hole pitch and hole diameter as the holes on the outer ring of the slewing bearing 2. In this way, the slewing bearing 2 does not need to be re-opened, and the installation of the mud scraping plate 3 can achieve the cleaning effect.

[0032] Although the specific implementation manners of the present disclosure have been described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present disclosure. Those skilled in the art should understand that based on the technical solutions of the present disclosure, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present disclosure.

Claims

1. A scraper blade structure for a turntable of an engineering machinery, characterized in that: The invention comprises a scraper blade, which comprises a mounting plate, reinforcing ribs and a scraper blade. The mounting plate is connected to the slewing bearing of the engineering machinery by bolts. The bottom of the scraper blade is a plate with a square cross section, and the top of the scraper blade is a plate with a rectangular cross section. The short side of the rectangle is consistent with the width of the mounting plate. The scraper blade is welded to the middle position perpendicular to the mounting plate. The reinforcing ribs are arranged on both sides of the scraper blade. After the scraper blade is installed, a certain interval is reserved between the outer side surfaces of the slewing bearing and the chassis.

2. The scraper blade structure for a turntable of an engineering machinery according to claim 1, characterized in that: The slewing bearing comprises an inner ring and an outer ring, and balls are arranged between the inner ring and the outer ring to enable the inner ring and the outer ring to rotate.

3. The scraper blade structure for a turntable of an engineering machinery according to claim 2, characterized in that: The outer ring is provided with bolt holes, and the rotating platform on the top of the slewing bearing and the mounting plate below the slewing bearing are simultaneously connected by bolts.

4. The scraper blade structure for a turntable of an engineering machinery according to claim 2, characterized in that: The connecting plate at the bottom of the inner ring is connected with the supporting chassis by bolts.

5. The scraper blade structure for a turntable of an engineering machinery according to claim 1, characterized in that: The length of the square at the bottom of the scraper is greater than the width of the mounting plate.

6. The scraper blade structure for a turntable of an engineering machinery according to claim 1, characterized in that: The reinforcing rib is a plate with a right-angled trapezoidal cross section, the right-angled waist of the right-angled trapezoid is vertically fixed to the scraper, and the lower bottom of the right-angled trapezoid is welded and fixed on the mounting plate.

7. The scraper blade structure for a turntable of an engineering machinery according to claim 6, characterized in that: The mounting plate is an arc-shaped part, and the curvature of the mounting plate is consistent with the curvature of the outer ring of the slewing bearing.

8. The scraper blade structure for a turntable of an engineering machinery according to claim 2, characterized in that: The long arc side of the mounting plate is in contact with the outer edge of the outer ring of the slewing bearing.

9. The scraper blade structure for a turntable of an engineering machinery according to claim 1, characterized in that: The mounting plate is provided with bolt holes with the same spacing as the through holes of the outer ring of the slewing bearing.

10. The scraper blade structure for a turntable of an engineering machinery according to claim 2, characterized in that: A sealing belt is arranged between the inner ring and the outer ring.

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