Scraping mechanism and rotary engineering machinery
By incorporating an adaptive rotating scraping mechanism into the engineering machinery, the problem of easy jamming of the slewing bearing scraping device is solved, ensuring the normal operation of the equipment.
Patent Information
- Application Number
- CN202423182059.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The sludge scraping device at the slewing bearing of existing construction machinery is prone to jamming, which affects the normal operation of the equipment.
A scraping mechanism is provided, including a scraping component and a connecting assembly. By providing a scraping part on the scraping component and connecting the scraping component and the rotary platform through the connecting assembly, the scraping component can adaptively rotate to move closer to or further away from the rotary bearing, thereby avoiding or reducing jamming.
This effectively avoids or reduces the jamming phenomenon of slewing bearings, ensuring the normal operation of construction machinery.
Smart Images
Figure CN223562231U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of engineering machinery, and in particular to a scraping mechanism and a slewing engineering machinery. BACKGROUND
[0002] Engineering machinery (such as excavators, cranes, etc.) is widely used in the field of construction, etc., and often needs to be constructed in a harsh environment such as mud and silt. It is inevitable to adhere to a large amount of mud and other attachments. Especially when the mud is accumulated more at the slewing bearing, the sealing ring of the slewing bearing is easily scratched, and in severe cases, the slewing mechanism cannot work normally.
[0003] In the related art, a mud scraping device is provided between the slewing platform and the slewing bearing to scrape off the mud adhered to the outer periphery of the slewing bearing, thereby reducing the damage of the mud to the slewing bearing.
[0004] However, the above-mentioned mud scraping device is prone to jamming in actual use, affecting the normal operation of the equipment. UTILITY MODEL CONTENT
[0005] Therefore, the present application provides a scraping mechanism and a slewing engineering machinery to solve the problem that the mud scraping device at the slewing bearing of the existing engineering machinery is prone to jamming, affecting the normal operation.
[0006] In a first aspect, the present application provides a scraping mechanism for being arranged between a slewing bearing and a slewing platform of a slewing engineering machinery, the scraping mechanism comprising:
[0007] a scraping member, at least one scraping portion being arranged on the scraping member;
[0008] a connecting assembly for connecting the scraping member and the slewing platform;
[0009] The scraping member is configured to rotate relative to the slewing platform when the slewing platform rotates relative to the slewing bearing, so that the scraping portion is close to the outer wall of the slewing bearing.
[0010] In a possible implementation, one side of the scraping portion has a cutting surface, and the cutting surface is used to cut into the tangential direction of the slewing bearing;
[0011] The side of the scraping portion away from the cutting surface has a guide surface, and the guide surface is used to guide the attachments to the side away from the rotation center of the slewing bearing.
[0012] In a possible implementation, at least one guide groove is arranged on the scraping member, and the guide groove is located on the guide surface and communicates with the cutting surface.
[0013] In a possible implementation, two scraping portions are arranged on the scraping member, and the two scraping portions are respectively located on two sides of the rotation center of the scraping member.
[0014] When the slewing platform rotates relative to the slewing bearing, one of the two scraping parts is close to the outer wall of the slewing bearing, and the other is away from the outer wall of the slewing bearing.
[0015] In a possible implementation, the scraping part is provided with a first mounting part, the connecting assembly is connected with the first mounting part, and the scraping part is rotated relative to the connecting assembly.
[0016] In a possible implementation, the connecting assembly comprises a first connecting piece and a first limiting piece, and the first mounting part is a first mounting hole.
[0017] One end of the first connecting piece is connected to the slewing platform, and the other end is inserted into the first mounting hole.
[0018] The first limiting piece is sleeved on the first connecting piece to limit the vertical height of the scraping part.
[0019] In a possible implementation, at least one limiting assembly is further included, and the limiting assembly is arranged between the slewing platform and the scraping part to limit the rotation angle of the scraping part.
[0020] In a possible implementation, the scraping part is provided with at least one second mounting part, the limiting assembly is connected with the second mounting part, and is used to limit the movement of the second mounting part.
[0021] In a possible implementation, the limiting assembly comprises a second connecting piece and a second limiting piece, and the second mounting part is a second mounting hole.
[0022] One end of the second connecting piece is connected to the slewing platform, and the other end is inserted into the second mounting hole.
[0023] The second limiting piece is sleeved on the second connecting piece to limit the vertical height of the scraping part.
[0024] In the second aspect, the application further provides a slewing engineering machine, comprising a main body, and the main body is provided with any one of the scraping mechanisms provided in the first aspect.
[0025] The application provides a scraping mechanism and a slewing engineering machine, which are arranged between a slewing bearing and a slewing platform of the slewing engineering machine. The scraping mechanism comprises a scraping part and a connecting assembly. At least one scraping part is arranged on the scraping part, and the connecting assembly connects the scraping part and the slewing platform. When the slewing platform rotates relative to the slewing bearing, the scraping part rotates relative to the slewing platform, so that the scraping part is close to the outer wall of the slewing bearing. Thus, the scraping part of the scraping mechanism provided by the application can be self-adaptively rotated to make the scraping part close to or away from the slewing bearing, so as to avoid or reduce the situation of being stuck with the slewing bearing, thereby ensuring the normal operation of the engineering machine. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0027] Figure 1 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1.
[0028] Figure 2 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 1
[0029] Figure 3 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 2
[0030] Figure 4 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 3
[0031] Figure 5 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 4
[0032] Figure 6 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 3
[0033] Figure 7 A schematic view of the scraping mechanism provided in the embodiments of the present application is shown in FIG. 1. Figure 3
[0034] Reference signs:
[0035] 100: rotary bearing;
[0036] 200: rotary platform;
[0037] 300: scraping piece;
[0038] 310: scraping part;
[0039] 311: cutting surface;
[0040] 312: guide surface;
[0041] 320: guide groove;
[0042] 330: first mounting part;
[0043] 340: second mounting part;
[0044] 400: connecting assembly;
[0045] 410: first connecting piece;
[0046] 420: first limiting member;
[0047] 500: limiting assembly;
[0048] 510: second connecting member;
[0049] 520: second limiting member. DETAILED DESCRIPTION
[0050] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application. Instead, they are merely examples of methods and apparatus consistent with some aspects of the present application as detailed in the appended claims.
[0051] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, and above attached drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so construed can interchange depending on the context in which they are used, and that the embodiments of the present application described herein are capable of operation in other sequences than described or otherwise illustrated herein. Further, the terms "comprise" and "include", and variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, product, or apparatus that comprises a list of steps or units are not necessarily limited to those steps or units that are expressly listed, but can include other not expressly listed steps or units.
[0052] At present, when the engineering machinery such as excavator is working in a harsh environment, a large amount of silt is easy to adhere to the slewing bearing, and the silt has the risk of penetrating into the slewing bearing, which affects the normal operation of the excavator. In the related art, the silt scraping plate is fixedly connected to the slewing platform, and the silt is easy to be stuck between the silt scraping plate, which not only affects the slewing action of the excavator, but also easily causes damage to the silt scraping plate.
[0053] In view of the above problems in the prior art, the present application provides a scraping mechanism and a slewing engineering machinery. The scraping mechanism provided by the present application comprises a scraping member and a connecting assembly, at least one scraping part is arranged on the scraping member, and the scraping member and the slewing platform are connected through the connecting assembly. When the slewing platform rotates relative to the slewing bearing, the scraping member rotates relative to the slewing platform, so that the scraping part is close to the outer wall of the slewing bearing. That is, the scraping member on the scraping mechanism can adaptively rotate to make the scraping part close to or away from the slewing bearing, so as to avoid or alleviate the situation of being stuck with the slewing bearing, thereby ensuring the normal operation of the engineering machinery.
[0054] The technical solutions of the present application are described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in some examples.
[0055] In the first aspect, referring to Figure 1-7 The embodiment of the present application provides a scraping mechanism for being arranged between the slewing bearing 100 and the slewing platform 200 of the slewing engineering machinery, which comprises a scraping piece 300 and a connecting assembly 400.
[0056] The scraping piece 300 is provided with at least one scraping part 310, and the connecting assembly 400 is used for connecting the scraping piece 300 and the slewing platform 200.
[0057] The scraping piece 300 is configured to rotate relative to the slewing platform 200 when the slewing platform 200 rotates relative to the slewing bearing 100, so that the scraping part 310 is close to the outer wall of the slewing bearing 100 to scrape the attachments on the outer wall of the slewing bearing 100.
[0058] The slewing bearing 100 in the embodiment is connected with the chassis together to play a supporting role, as shown in Figure 1 The slewing platform 200 is rotatably connected to the slewing bearing 100, and the slewing platform 200 is used for mounting a large arm, a small arm, a bucket and the like. During work, the slewing platform 200 can rotate relative to the slewing bearing 100, such as rotating around the Y axis in Figure 1 .
[0059] The scraping piece 300 in the embodiment is used for scraping the attachments such as mud on the outer wall of the slewing platform 200, which can be a plate-shaped or block-shaped structure. The scraping piece 300 is provided with a scraping part 310, which is used for scraping mud and can be a sharp part, a sharp end, a cutting edge, etc. The size of the acting surface on the scraping part 310 can be determined according to the height of the outer wall of the slewing bearing 100.
[0060] The connecting assembly 400 in the embodiment is used for connecting the scraping piece 300 to the slewing platform 200, which can be a rotating shaft, a pin shaft, a bolt or the like. When the connecting assembly 400 connects the scraping piece 300 to the slewing platform 200, the scraping piece 300 can rotate relative to the connecting assembly 400, such as rotating around the Y axis in Figure 1 . The connecting assembly 400 is fixed relative to the slewing platform 200, or the scraping piece 300 and the connecting assembly 400 can rotate relative to the slewing platform 200, which can connect the scraping piece 300 to the slewing platform 200 and ensure that the scraping piece 300 can rotate.
[0061] It should be noted that the rotation center of the scraper 300 must be located outside the outer wall of the slewing bearing 100, and the scraping part 310 should also be located outside the outer wall of the slewing bearing 100. Moreover, the scraping part 310 should be as far away as possible from the line connecting the rotation center of the scraper 300 and the rotation center of the slewing bearing 100.
[0062] Specifically, taking the scraper 300 having two oppositely arranged scraping sections 310 as an example, as follows: Figure 6 As shown, when the rotary platform 200 drives the scraper 300 and the connecting assembly 400 to rotate clockwise together, the scraping part 310 at the lower end of the scraper 300 is pushed by the material attached to the outer wall of the rotary bearing 100, and the scraper 300 also rotates clockwise by a small angle. The scraping part 310 at the lower end gradually approaches the outer wall of the rotary bearing 100 to achieve scraping, while the scraping part 310 at the upper end gradually moves away from the outer wall of the rotary bearing 100 to avoid jamming.
[0063] For example Figure 7 As shown, when the rotary platform 200 drives the scraper 300 and the connecting assembly 400 to rotate counterclockwise together, the scraping part 310 at the upper end of the scraper 300 is pushed by the attachment on the outer wall of the rotary bearing 100, and the scraper 300 also rotates a small angle counterclockwise. The upper scraping part 310 gradually approaches the outer wall of the rotary bearing 100 to achieve scraping, while the lower scraping part 310 gradually moves away from the outer wall of the rotary bearing 100 to avoid jamming.
[0064] Furthermore, let's take the example of a scraper 300 having only one scraping section 310 as an example, such as... Figure 6 As shown, if the scraper 300 only has a scraping part 310 at its lower end, when the rotary platform 200 drives the scraper 300 and the connecting assembly 400 to rotate clockwise together, the scraping part 310 at the lower end gradually approaches the outer wall of the rotary support 100. Figure 7 As shown, when the rotary platform 200 drives the scraper 300 and the connecting assembly 400 to rotate counterclockwise together, the scraper 300 at the lower end no longer scrapes the slewing bearing 100, and at least has a tendency to move away from the outer wall of the slewing bearing 100, which can also avoid jamming.
[0065] It is understandable that, compared with the existing fixed scraper blades, the application of the scraping mechanism in this embodiment allows the scraper 300 to rotate adaptively so that the scraper 310 moves closer to or further away from the slewing bearing 100, thereby avoiding or reducing the situation of jamming with the slewing bearing 100, so as to ensure the normal operation of the construction machinery.
[0066] It should be noted that, in order to avoid the rigid contact between the scraping part 310 and the outer wall of the slewing bearing 100 and damage, when the scraping part 310 is close to the limit position of the slewing bearing 100, a safety gap is also required, or the scraping part 310 can be made of a non-rigid material, such as plastic, rubber, etc.
[0067] Therefore, the scraping mechanism provided in the embodiment of the present application includes the scraping part 300 and the connecting assembly 400, at least one scraping part 310 is arranged on the scraping part 300, and the scraping part 300 and the slewing platform 200 are connected through the connecting assembly 400. When the slewing platform 200 rotates relative to the slewing bearing 100, the scraping part 300 rotates relative to the slewing platform 200, so that the scraping part 310 approaches the outer wall of the slewing bearing 100. That is, the scraping part 300 on the scraping mechanism can adaptively rotate to make the scraping part 310 approach or move away from the slewing bearing 100, so as to avoid or alleviate the situation of jamming with the slewing bearing 100, thereby ensuring the normal operation of the engineering machinery.
[0068] In a possible design, one side of the scraping part 310 has a cutting surface 311, which is used to cut into the tangential direction of the slewing bearing 100.
[0069] The side of the scraping part 310 away from the cutting surface 311 has a guide surface 312, which is used to guide the adhering objects to the side away from the rotation center of the slewing bearing 100.
[0070] Specifically, as shown in Figure 4 , the side of the scraping part 310 towards the slewing bearing 100 has the cutting surface 311, and the side of the scraping part 310 away from the slewing bearing 100 has the guide surface 312, and the cutting surface 311 and the guide surface 312 are connected to form a cutting edge.
[0071] In this way, the scraping part 310 can cut into the adhering objects, and at the same time, the guide surface 312 can facilitate the falling of the adhering objects.
[0072] Further, in the embodiment, at least one guide groove 320 is arranged on the scraping part 300, and the guide groove 320 is located on the guide surface 312 and is connected to the cutting surface 311.
[0073] Specifically, as shown in Figure 3 , Figure 4 , the guide groove 320 can be an arc-shaped groove, which facilitates the discharge and falling of the mud and sand and is not easy to jam. The specific shape, size, etc. of the guide groove 320 can be determined according to actual needs, and the embodiment is not limited too much.
[0074] In some embodiments, the scraping part 310 is provided as two, and the two scraping parts 310 are respectively located on the two sides of the rotation center of the scraping part 300.
[0075] When the slewing platform 200 rotates relative to the slewing bearing 100, one of the two scraping parts 310 is close to the outer wall of the slewing bearing 100, and the other is away from the outer wall of the slewing bearing 100.
[0076] In this way, as shown in Figure 3 , Figure 4 , Figure 6 , Figure 7 indicated, the slewing platform 200 scrapes in both forward and reverse rotation, and the force is more balanced and the arrangement is more reasonable.
[0077] In addition, one side of the scraping part 300 towards the slewing bearing 100 is a concave arc surface, and the other side of the scraping part 300 away from the slewing bearing 100 is a convex arc surface, so that the scraping part 300 is roughly crescent-shaped.
[0078] In some embodiments, the scraping part 300 is provided with a first mounting part 330, and the connecting assembly 400 is connected with the first mounting part 330 and rotates the scraping part 300 relative to the connecting assembly 400.
[0079] In this way, as shown in Figure 2-4 , the first mounting part 330 is rotationally connected with the connecting assembly 400, and then the connecting assembly 400 is fixedly connected to the slewing platform 200, so as to facilitate installation, replacement, etc., and also easy to process and manufacture.
[0080] Further, in the embodiment, the connecting assembly 400 includes a first connecting piece 410 and a first limiting piece 420, and the first mounting part 330 is a first mounting hole.
[0081] One end of the first connecting piece 410 is used to be connected to the slewing platform 200, and the other end is inserted into the first mounting hole.
[0082] The first limiting piece 420 is sleeved on the first connecting piece 410 to limit the vertical height of the scraping part 300.
[0083] Specifically, as shown in Figure 2 , the first connecting piece 410 can be a screw rod, a pin shaft, etc., the first limiting piece 420 can be a sleeve, a pin, etc., the upper end of the first connecting piece 410 can be fixedly connected to the slewing platform 200 by screwing, inserting, welding, etc., and the lower end of the first connecting piece 410 is inserted into the first mounting hole, and the scraping part 300 can rotate around the first connecting piece 410.
[0084] Moreover, the first limiting member 420 can be sleeved on the first connecting member 410 above the scraping member 300 to prevent the scraping member 300 from moving upward, and a nut, a check ring or the like can be installed on the first connecting member 410 below the scraping member 300 to prevent the scraping member 300 from moving downward, thereby facilitating the installation and adjustment of the scraping member 300.
[0085] Of course, the connecting assembly 400 and the scraping member 300 can also be replaced by other types of rotating structures, and any rotating structure that can rotate the scraping member 300 and keep it at a certain height can be used, and the present embodiment is not limited in this regard.
[0086] In some embodiments, at least one limiting assembly 500 is further included, which is arranged between the rotating platform 200 and the scraping member 300 to limit the rotation angle of the scraping member 300.
[0087] In this way, as shown in Figure 2 , 3 , under the limiting action of the limiting assembly 500, when the scraping member 300 rotates to the limit position, the scraping part 310 and the outer wall of the rotating support 100 can still maintain a certain safety gap, thereby avoiding rigid contact and scratching.
[0088] Specifically, in the present embodiment, at least one second mounting part 340 is arranged on the scraping member 300, the limiting assembly 500 is connected with the second mounting part 340 and is used to limit the movement of the second mounting part 340.
[0089] In this way, as shown in Figure 2-4 , the second mounting part 340 is connected with the limiting assembly 500 and a safety gap is left between the second mounting part 340 and the limiting assembly 500, and then the limiting assembly 500 is fixedly connected to the rotating platform 200, so that when the scraping member 300 rotates around the connecting assembly 400, the safety gap limits the continuous rotation of the scraping member 300, thereby facilitating installation, replacement and the like, and being easy to process and manufacture.
[0090] Further, in the present embodiment, the limiting assembly 500 includes a second connecting member 510 and a second limiting member 520, and the second mounting part 340 is a second mounting hole.
[0091] One end of the second connecting member 510 is used to be connected to the rotating platform 200, and the other end is inserted into the second mounting hole.
[0092] The second limiting member 520 is sleeved on the second connecting member 510 to limit the vertical height of the scraping member 300.
[0093] Specifically, as shown in Figure 2-4As shown, the second connecting member 510 can be a screw rod, a pin shaft, etc., the second limiting member 520 can be a sleeve, a pin, etc., the second mounting hole can be a waist-shaped hole or a long slot hole, the upper end of the second connecting member 510 can be fixedly connected on the rotary platform 200 by screwing, inserting, welding, etc., the lower end of the second connecting member 510 is inserted in the second mounting hole, and the scraping member 300 can be offset from the second connecting member 510 by a safety clearance. That is, the size of the second mounting hole must be greater than the outer diameter of the second connecting member 510, so that the second connecting member 510 can have a certain moving space in the second mounting hole, so as to limit the angle of rotation of the scraping member 300 through the size of the second mounting hole
[0094] Moreover, the second limiting member 520 can be sleeved on the second connecting member 510 above the scraping member 300 to prevent the scraping member 300 from moving upward, and nuts, retaining rings, etc. can be installed on the second connecting member 510 below the scraping member 300 to prevent the scraping member 300 from moving downward, thereby facilitating the installation and adjustment of the scraping member 300.
[0095] Of course, the limiting assembly 500 and the scraping member 300 can also be replaced by other types of limiting structures, as long as the scraping member 300 can be offset within a certain clearance, and this embodiment is not limited in this regard.
[0096] In addition, as shown, Figure 5 The cross section of the second mounting hole gradually increases from top to bottom, so that even if the sand enters from the upper end of the second mounting hole, the sand can be easily and timely discharged downward, so as not to block the hole and affect the rotation of the scraping member 300.
[0097] In a second aspect, the embodiment of the present application also provides a rotary engineering machine, which comprises a main body, and the main body is provided with the scraping mechanism provided by any of the above embodiments.
[0098] The structure of the scraping mechanism is described in detail in the above embodiments, which will not be repeated here. The above rotary engineering machine can be a rotary excavator, a rotary crane, etc.
[0099] The rotary engineering machine provided by the embodiment of the present application is configured with the scraping mechanism, which comprises the scraping member 300 and the connecting assembly 400. At least one scraping part 310 is arranged on the scraping member 300, and the connecting assembly 400 connects the scraping member 300 and the rotary platform 200. When the rotary platform 200 rotates relative to the rotary support 100, the scraping member 300 rotates relative to the rotary platform 200, so that the scraping part 310 approaches the rotary support 100. That is, the scraping member 300 on the scraping mechanism can adaptively rotate to make the scraping part 310 approach or move away from the rotary support 100, thereby avoiding or reducing the situation of being stuck with the rotary support 100, so as to ensure the normal operation of the engineering machine.
[0100] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.
[0101] It is to be understood that the application is not limited to particular details described herein and as illustrated in the drawings. Various modifications can be made to the embodiments described and illustrated herein without departing from the scope of the application. The scope of the application is limited only by the claims.
Claims
1. A scraping mechanism for being arranged between a slewing bearing (100) and a slewing platform (200) of a slewing construction machine, characterized in that The scraping mechanism comprises: a scraping piece (300) provided with at least one scraping part (310); a connecting assembly (400) for connecting the scraping piece (300) and the rotating platform (200); The scraping piece (300) is configured to rotate relative to the rotating platform (200) when the rotating platform (200) rotates relative to the rotating support (100), so that the scraping part (310) is close to the outer wall of the rotating support (100).
2. A scraping mechanism according to claim 1, characterized in that One side of the scraping part (310) has a cutting surface (311) for cutting in the tangential direction of the rotating support (100); The side of the scraping part (310) away from the cutting surface (311) has a guide surface (312) for guiding the adhering objects to the side away from the rotating center of the rotating support (100).
3. A scraping mechanism according to claim 2, wherein The scraping piece (300) is provided with at least one guide groove (320) on the guide surface (312) and penetrates through the cutting surface (311).
4. The scraping mechanism of claim 1, wherein, The scraping part (310) is provided with two scraping parts (310) on both sides of the rotating center of the scraping piece (300); When the rotating platform (200) rotates relative to the rotating support (100), one of the two scraping parts (310) is close to the outer wall of the rotating support (100), and the other is away from the outer wall of the rotating support (100).
5. The scraping mechanism of claim 1, wherein, The scraping piece (300) is provided with a first mounting part (330), the connecting assembly (400) is connected with the first mounting part (330), and the scraping piece (300) rotates relative to the connecting assembly (400).
6. A scraping mechanism according to claim 5, wherein The connecting assembly (400) comprises a first connecting piece (410) and a first limiting piece (420), and the first mounting part (330) is a first mounting hole; One end of the first connecting piece (410) is connected to the rotating platform (200), and the other end is inserted into the first mounting hole; The first limiting piece (420) is sleeved on the first connecting piece (410) to limit the vertical height of the scraping piece (300).
7. A scraping mechanism according to any one of claims 1 to 6, characterized in that Further comprising at least one limiting assembly (500) for being arranged between the rotating platform (200) and the scraping piece (300) to limit the rotation angle of the scraping piece (300).
8. A scraping mechanism according to claim 7, characterized in that The scraping piece (300) is provided with at least one second mounting part (340), the limiting assembly (500) is connected with the second mounting part (340), and is used for limiting the movement of the second mounting part (340).
9. A scraping mechanism according to claim 8, characterized in that The limiting assembly (500) comprises a second connecting piece (510) and a second limiting piece (520), and the second mounting part (340) is a second mounting hole; One end of the second connecting piece (510) is connected to the rotating platform (200), and the other end is inserted into the second mounting hole; The second limiting member (520) is sleeved on the second connecting member (510) to limit the vertical height of the scraping member (300).
10. A slewing construction machine, characterised in that The application further discloses a cleaning device comprising a main body, wherein the main body is provided with the scraping mechanism as claimed in any one of claims 1 to 9.