A working attachment and engineering machinery

Abstract

This application provides a working attachment and engineering machinery. The working attachment includes a base, a cleaning device and a scraping device, both mounted on the base. The scraping device includes a scraper, a main body fixing seat, and a first driving device for driving the scraper to move linearly relative to the base. A guide structure is provided on the base, including a linear track. The scraper is slidably connected to the linear track through the main body fixing seat and moves linearly along the linear track. The first driving device and the linear track are both located inside the base. Multiple linear tracks are arranged circumferentially along the main body fixing seat and form a sliding space for the main body fixing seat to extend into and slide. The working attachment provided by this application can clean cargo adhering to the bulkhead, ribs, and corners of the hold, and can replace manual cleaning operations. The working parts are flexible and convenient to operate, making the cleaning operation convenient and efficient. It not only improves the efficiency and safety of the cleaning work and reduces the difficulty of the cleaning operation, but also ensures the cleaning rate.

Description

[0001] This application is a divisional application of the patent application filed on April 11, 2022, with application number 202210374037.5 and invention title "A working attachment and engineering machinery". Technical Field

[0002] This application relates to the field of engineering machinery technology, and in particular to a working attachment and engineering machinery. Background Technology

[0003] Currently, all bulk cargo unloading operations require the assistance of hold cleaning equipment. The currently used hold cleaning equipment consists of existing construction machinery such as excavators and loaders. While these machines are typically equipped with buckets and can generally handle the collection and transfer of bulk cargo within the hold, they are not well-suited for cleaning small or loose cargo adhering to the hold walls and ribs, such as grains like Brazilian soybeans and sunflower seeds, and minerals like coal and nickel ore. This results in unsatisfactory cleaning results, necessitating manual entry into the hold for cleaning, leading to low overall efficiency and significant safety risks for personnel working inside the hold.

[0004] Therefore, it is urgent for those skilled in the art to develop working attachments that are more suitable for this working condition in order to improve the efficiency of the cleaning operation. Summary of the Invention

[0005] In view of this, this application provides a working attachment that connects to the boom of engineering machinery, enabling the removal of cargo adhering to the bulkheads, ribs, and corners. This attachment can replace manual labor in the cleaning of ship holds during bulk cargo unloading, improving efficiency, reducing difficulty, and enhancing safety. This application also provides an engineering machine equipped with the aforementioned working attachment.

[0006] To achieve the above objectives, this application provides the following technical solution: a working attachment includes a base, a cleaning device and a scraping device both mounted on the base, the scraping device including a scraper, a main body fixing seat and a first driving device for driving the scraper to move linearly relative to the base;

[0007] The base is provided with a guide structure, which includes a linear track. The scraper is slidably connected to the linear track via the main body fixing seat and moves linearly along the linear track.

[0008] The first driving device and the linear track are both located inside the base. There are multiple linear tracks arranged around the main body fixing seat and forming a sliding space in which the main body fixing seat can extend and slide.

[0009] Optionally, the cleaning device includes a cleaning disc with cleaning filaments and a second driving device for driving the cleaning disc to rotate.

[0010] Optionally, the base includes: a substrate; a scraper mounting base for mounting the scraper device; and a cleaning mounting base for mounting the cleaning device.

[0011] Optionally, the base is provided with: a main pin for hinged connection with the boom; and an auxiliary pin for hinged connection with the telescopic rod of the swing cylinder; the central axis of the auxiliary pin is parallel to the central axis of the main pin.

[0012] Optionally, the cleaning mount and / or the scraper mount are detachably connected to the base.

[0013] Optionally, the base may further include a detector mounting bracket for fixing the detector and / or a hydraulic system mounting bracket for fixing the hydraulic lines.

[0014] Optionally, the working attachment may further include an air blowing device detachably connected to the base.

[0015] This application also provides an engineering machine equipped with a boom and a working attachment as described in any of the preceding claims, the working attachment being mounted on the working end of the boom.

[0016] Optionally, the engineering machinery is a tank cleaning machine.

[0017] The technical solution provided in this application includes a working attachment equipped with a sweeping device and a scraping device, possessing both sweeping and scraping functions. It can perform sweeping and scraping operations on cargo. When the working attachment is connected to the boom of engineering machinery and driven to operate, it can effectively remove cargo adhering to the bulkheads and hold ribs through both scraping and sweeping actions. It is also very suitable for cleaning cargo in corners. Furthermore, at least one of the sweeping and scraping components is movable relative to the base, allowing it to be closer to or further away from the cleaning location than the other. Thus, the sweeping and scraping devices can work alternately. This allows for specific selection based on actual needs, employing different cleaning methods for different cargoes, improving the convenience and effectiveness of cargo cleaning. On the other hand, it reduces the space occupied by the working components during cleaning, avoids interference with the other component, improves mobility, and significantly enhances the feasibility and convenience of cleaning operations in corners and other areas. This results in more comprehensive, thorough, and effective cleaning, ensuring a high cargo clearance rate and further reducing the need for manual labor. Attached Figure Description

[0018] Figure 1 The diagram shown is an overall composition diagram of the working attachment in an embodiment of this application.

[0019] Figure 2The figure shown is a structural diagram of the base in an embodiment of this application.

[0020] Figure 3 The diagram shown is a structural diagram of the cleaning device in an embodiment of this application.

[0021] Figure 4 The diagram shown is a structural diagram of the scraping device in an embodiment of this application.

[0022] Figure 5 The image shown is a front view of the working attachment in an embodiment of this application.

[0023] Figure 6 The image shown is a side view of the working attachment in an embodiment of this application.

[0024] Figure 7 The image shown is a top view of the working attachment in an embodiment of this application.

[0025] Figure 1-7 middle:

[0026] 1. Base; 2. Cleaning device; 3. Scraper device; 101. Base; 102. Cleaning mounting base; 103. Linear track; 104. Detector mounting base; 105. Hydraulic system mounting base; 106. Scraper mounting base; 107. Auxiliary pin; 108. Main pin; 201. Second drive device; 202. Transmission assembly; 203. Cleaning disc; 3. Scraper device; 301. Scraper; 302. Main body fixing base; 303. First drive device; 304. Connecting plate. Detailed Implementation

[0027] This application provides a working attachment that connects to the boom of engineering machinery. It can clean cargo adhering to the bulkheads, ribs, and corners of the hold, replacing manual labor for hold cleaning operations. The working components are flexible and convenient to operate, making hold cleaning convenient and efficient. This not only improves the efficiency and safety of hold cleaning work and reduces the difficulty of the operation, but also ensures a high hold cleaning rate. An embodiment of this application also provides engineering machinery including the aforementioned working attachment.

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] As attached Figures 1-7As shown, an embodiment of this application provides a working attachment, comprising a sweeping device 2 and a scraping device 3. The sweeping device 2 has a sweeping component for sweeping actions, and the scraping device 3 has a scraping component for scraping actions. The working attachment has two working components and possesses both scraping and sweeping functions. The working attachment can be connected to the boom of construction machinery. This boom can be a boom used by the construction machinery to connect other attachments, or it can be a boom specifically designed to connect the working attachment. When the working attachment is connected to the boom of the construction machinery, it is driven to perform mobile operations, capable of both scraping and sweeping operations on cargo. It can effectively scrape off cargo adhering to the bulkheads and hull ribs, and can also perform cargo sweeping, making it particularly suitable for cleaning cargo in corners and other hard-to-reach areas. Meanwhile, in this embodiment, at least one of the sweeping component and the scraping component is movable relative to the base 1. By moving, it can move closer to or further away from the cleaning position relative to the other, so that the sweeping device 2 and the scraping device 3 can work alternately. In this way, on the one hand, specific selection can be made according to actual needs, and different cleaning methods can be adopted for different goods, improving the convenience and effectiveness of cleaning goods. On the other hand, it can reduce the space occupied by the working components during cleaning, avoid interference and hindrance to the other, improve the mobility of the working components and working attachments, especially making the cleaning operation at corners and other places significantly more convenient, making the cleaning more comprehensive, thorough and in place, ensuring the cleaning rate, and further reducing the need for manpower.

[0030] Therefore, the working attachments provided in this embodiment are matched with the working conditions and characteristics of bulk cargo ship holds, and adapt to the needs of holding cargo holds. They can not only replace manual labor for holding cargo holds, improving the efficiency and safety of holding cargo holds and reducing the intensity of work; but also, through the alternating scraping and sweeping actions, they have more flexible, convenient and efficient performance compared to using other attachments for holding cargo holds, significantly improving the convenience, work efficiency and cargo holding rate of holding cargo holds with engineering machinery.

[0031] The aforementioned "movable relative to base 1" can specifically mean that it moves linearly relative to the base to move closer to / away from the position to be cleaned; or it can mean that it is hinged to the base and moves closer to / away from the position to be cleaned by rotating around the hinge point.

[0032] Specifically, either the scraping component or the cleaning component can be movably mounted on the base 1, or both can be movably mounted.

[0033] This application provides a preferred embodiment in which the scraping component is movably mounted on the base 1. For sweeping, the cleaning component generally has a wider working cross-section than the scraping component. Therefore, moving the scraping component, which has a narrower cross-section, offers greater flexibility and smoother, more convenient movement. Furthermore, the movement of one component is sufficient to achieve alternating sweeping and scraping operations, eliminating the need for two sets of moving structures and two sets of power; one power source is sufficient, simplifying the structure and saving energy.

[0034] The movable arrangement of the base 1 can be linear or rotational. In a preferred embodiment, the scraping component and the cleaning component face the same direction, for example, protruding from the same side of the base 1. The scraping device 3 also includes a first driving device 303 to drive the scraping component to perform linear displacement. Thus, the scraping component can extend and retract relative to the cleaning component and the base 1, moving closer to or further away from the cleaning position relative to the cleaning component of the cleaning device 2. When the extension length of the scraping component relative to the base 1 exceeds the distance between the cleaning component and the base 1, the scraping component is closer to the area to be cleaned and can perform its work, with a gap between the cleaning component and the surface to be cleaned, creating a clearance. When the scraping component retracts, and its distance from the base 1 is less than the distance between the cleaning component and the base 1, the cleaning component is closer to the area to be cleaned, with a gap between the scraping component and the surface to be cleaned, creating a clearance. With this configuration, the working attachment provided in this embodiment has a simple structure, high integration, and high product reliability.

[0035] The scraping component can be a scraper 301, such as... Figure 1 and Figure 4 As shown, the scraper 301 can be a thin plate, which is equivalent to forming a scraping blade structure at the working end. This facilitates scraping and removing loose goods adsorbed on the wall surface. The thin scraper 301 can also effectively scrape away goods with strong adsorption or small volume, causing the goods to fall off the wall surface. Of course, in other embodiments, the working end of the scraper 301 can also be other shapes, such as toothed shapes, which can be specifically set or matched according to different working environments.

[0036] The scraper 301 moves in a straight line under the drive of the first drive device 303.

[0037] To enhance the connection strength of the scraper 301, the scraping device 3 also includes a main body fixing seat 302, on which the scraper 301 is fixed, and the main body fixing seat 302 moves linearly under the drive of the first driving device 303.

[0038] The main mounting base 302 can be block-shaped, and the scraper 301 is fixed to the main mounting base 302 via a connecting plate 304. Reinforcing ribs can also be provided between the scraper 301 and the connecting plate 304 to enhance the connection strength and load-bearing capacity of the scraper 301, ensuring sufficient scraping force. The connecting plate 304 can be the top plate of the main mounting base 302; it can also be a plate detachably connected to the main mounting base 302 via fasteners, etc. With this configuration, the scraper 301 and the connecting plate 304 form an independently configured scraper head. The scraper 301 and the connecting plate can be welded together to further improve strength, while the scraper head is detachably connected to the main mounting base 302, facilitating assembly and replacement. Alternatively, the connecting plate 304 can also be welded to the main mounting base 302.

[0039] To enhance the smoothness of movement, in this embodiment, a guide structure can also be provided on the base 1. The guide structure includes a linear track 103, and the scraper 301 moves linearly along the linear track 103 to ensure smooth and stable linear movement without shaking. The scraper 301 is slidably connected to the linear track 103 through the main body fixing seat 302.

[0040] The cleaning device 2 may include a cleaning disc 203, on which cleaning filaments are provided to form the aforementioned cleaning component. The cleaning filaments on the cleaning disc 203 may be bundled together and evenly distributed across the entire disc surface, similar to a brush structure.

[0041] In one embodiment, the sweeping disc 203 may be fixed and immobile relative to the base 1. When the working attachment moves with the boom, the sweeping disc 203 can sweep the goods. In a preferred embodiment, the sweeping disc 203 may also be rotatable, and the sweeping device 2 includes a second drive device 201 that drives the sweeping disc 203 to rotate along its own axis. Figure 3 As shown, the sweeping device 2 also includes a transmission assembly 202, through which the second drive device 201 is connected to the sweeping disc 203. The second drive device 201 can be an electric motor, a hydraulic motor, or a swing cylinder. The transmission assembly 202 is specifically configured according to the power type, such as a reducer, a drive shaft, etc. The composition of the transmission assembly 202 is prior art in this field and will not be described in detail here.

[0042] The base 1 includes a base 101, and also includes a scraper mounting seat 106 and a cleaning mounting seat 102, both connected to the base 101. The scraper device 3 is fixed by the scraper mounting seat 106, and the cleaning device 2 is fixed by the cleaning mounting seat 102.

[0043] The guide structure can be installed on the scraper mounting base 106. The scraper mounting base 106 can be plate-shaped, a bracket structure, or something else. Figure 1 and Figure 2 As shown, it is a hollow strip-shaped structure, with the first drive device 303 and the linear track 103 both located inside the scraper mounting base 106. The scraper mounting base 106 may include a left cover and a right cover that interlock, forming a scraper mounting base 106 with a receiving space, thus facilitating assembly and subsequent disassembly and maintenance.

[0044] like Figure 2 As shown, there can be multiple linear tracks 103, such as two, three, or four. In a preferred embodiment, there are four or multiples of four linear tracks 103, distributed circumferentially along the scraper mounting base 106, forming a sliding space into which the main fixing base 302 extends and slides. The main fixing base 302 is a long strip, such as a square beam structure, with cross-sectional dimensions matching the cross-sectional dimensions of the guide space. The four outer walls of the main fixing base 302 are all smooth planes, and the linear tracks 103 have smooth and flat rail surfaces, with each rail surface of the linear track 103 abutting against the outer wall of the main fixing base 302. When the main fixing base 302 extends into the guide space formed by the linear tracks 103, it achieves a fitted and sliding connection, allowing for telescopic linear displacement under drive.

[0045] With this configuration, the scraper device 3 can be assembled directly by fitting the main body fixing seat 302 onto the scraper mounting seat 106, which also facilitates later maintenance; at the same time, the entire scraper 301 moves smoothly and stably without shaking.

[0046] Of course, in other embodiments, there may be only one linear track 103, such as a sliding guide rail with a slider, and the main body fixing seat 302 is fixedly connected to the slider on the sliding guide rail. For example, it may be a lead screw, and the main body fixing seat 302 is fixedly connected to the nut on the lead screw.

[0047] The first driving device 303 can be a cylinder, a motor, a hydraulic cylinder, or a hydraulic motor. In some embodiments, the first driving device 303 is a linear power source, such as a hydraulic cylinder or a pneumatic cylinder, which simplifies the transmission and eliminates the need for a complex transmission structure. In this embodiment, the first driving device 303 can be disposed within the scraper mounting base 106, with the power telescopic rod connected to the main body fixing base 302 and pushing the main body fixing base 302 to slide. Alternatively, the first driving device 303 can be installed within the main body fixing base 302, with the power telescopic rod extending out of the main body fixing base 302 and connected to the scraper mounting base 106, and the extension and retraction of the power telescopic rod driving the main body fixing base 302 and the scraper 301 to slide.

[0048] The scraper 301 extends and retracts outside the scraper mounting base 106 by being sleeved and slidably connected to the main body fixing base 302 and the scraper mounting base 106. In this way, the guide structure and the first drive device 303 can be protected from contamination and are not easily damaged by collisions, and the movement of the scraper 301 is not obstructed.

[0049] A limiting structure to prevent slippage can be provided between the scraper mounting base 106 and the main body fixing base 302. Specifically, the limiting structure can be configured as follows: an anti-slip protrusion can be provided at the end of the main body fixing base 302 away from the scraper 301, and a blocking protrusion protruding from the inner wall of the cylinder opening of the scraper mounting base 106. The main body fixing base 302 slides and extends within the scraper mounting base 106, and the anti-slip protrusion abuts against the blocking protrusion. In this way, the main body fixing base 302 can be effectively prevented from slipping out.

[0050] The cleaning mounting base 102 can be a bracket-like structure, including two opposing and spaced-apart vertical plates. A space is formed between the two vertical plates to accommodate the second drive device 201 and the transmission assembly 202. Two clamping plates are laid between the two vertical plates. The two clamping plates are spaced apart and each has a clearance opening. Seat plates are provided at both ends of the transmission assembly 202. During connection, the transmission assembly 202 is located between the two clamping plates, and the two seat plates are connected to the clamping plates respectively. The clearance opening on one clamping plate provides clearance for the cleaning disc 203, and the clearance opening on the other clamping plate provides clearance for the second drive device 201.

[0051] The base 101 may be plate-shaped, and the cleaning mounting base 102 may be fixed on the end face of the base 101. Since the scraping mounting base 106 is relatively long, the scraping mounting base 106 may be connected to one side of the base 101.

[0052] In one embodiment, the cleaning device 2 is detachably connected to the cleaning mounting base 102, such as by fasteners or snap-fit ​​structures. This facilitates maintenance, repair or replacement of the cleaning device 2 after disassembly.

[0053] In one embodiment, the scraper mounting base 106 is detachably connected to the base 101 via fasteners or snap-fit ​​structures.

[0054] The cleaning mounting base 102 can be fixedly connected to the base 101, or it can be detachably connected. In a preferred embodiment, both the scraping mounting base 106 and the cleaning mounting base 102 are detachably connected to the base 101. The cleaning device 2 is fixed on the cleaning mounting base 102, and the scraping device 3 is also mounted on the scraping mounting base 106. During assembly, the mounting base is connected to the base 101 or other attachments for direct use. This facilitates modular production and assembly, and also provides feasibility and convenience for assembling the cleaning device 2 and the scraping device 3 onto other attachments. Obviously, the working attachment in this embodiment has a simple structure, high integration, and high product reliability and maintainability.

[0055] The working attachment is connected to the boom, and a connecting pin for connecting to the boom can be provided on the base 101. Specifically, such as... Figure 2As shown, the base 101 is provided with a main pin 108 and an auxiliary pin 107. The main pin 108 is used to hinge with the boom, and the auxiliary pin 107 is used to hinge with the telescopic rod of the swing cylinder. The central axis of the auxiliary pin 107 is parallel to the central axis of the main pin 108. With this configuration, the working attachment is hinged to the boom and has swing capability. Driven by the swing cylinder, the working attachment can swing, improving its performance through changes in the working angle. This makes the work more convenient and flexible, and the cleaning of goods more thorough, thereby improving the efficiency and rate of cargo clearance.

[0056] In one embodiment, the working attachment also includes an air blowing device (not shown) detachably connected to the base 101. The air blowing device includes an air blowing pipe and an air source. The detachable connection of the air blowing device to the base 101 makes it optional; it can be connected to the base 101 when needed and detached when not in use, avoiding any obstruction to cleaning and scraping operations. When cleaning certain special areas, such as corners, where the scraper 301 and cleaning device 2 are not suitable, the air blowing device can be switched for cleaning, thus improving work efficiency and cleaning rate.

[0057] Since the working attachment has two working components, a scraper 301 and a cleaning disc 203, the scraper 301 and the cleaning disc 203 work alternately. Therefore, in some embodiments, the base 1 is provided with a detector mounting base 104 for fixing the detector. When it is necessary to connect a detector to detect the working status of the scraper 301 and the cleaning disc 203, the detector can be directly fixed to the detector mounting base 104. The detector mounting base 104 can also be detachably connected to the base 1. Specifically, the detector mounting base 104 can be connected to the scraper mounting base 106. Since the working and non-working states of the scraper 301 are in different positions, it is easier to detect.

[0058] In some embodiments, the base 1 is provided with a hydraulic system mounting bracket 105 for fixing hydraulic pipelines. By reserving mounting interfaces for control systems such as detectors and / or hydraulic pipelines on the base 1, convenience is provided for future intelligent expansion. The hydraulic system mounting bracket 105 can be detachably connected to the base 1. Specifically, it can be connected to the scraper mounting bracket 106, which facilitates pipeline layout.

[0059] This embodiment also provides an engineering machinery, equipped with a vehicle body, a boom, and working attachments. The working attachments are as described in the previous embodiment and are mounted on the working end of the boom. With this configuration, the engineering machinery provided in this embodiment is suitable for tank cleaning work, facilitating unloading and cleaning of bulk carrier holds. Its working attachments offer more flexible, convenient, and efficient use, significantly improving the convenience, work efficiency, and cargo clearance rate of tank cleaning using engineering machinery. The derivation process for this beneficial effect is essentially the same as the derivation process for the beneficial effect of the working attachments in the above embodiments, and will not be repeated here.

[0060] The construction machinery can be an excavator equipped with the aforementioned working attachments. In use, the excavator's bucket is detached from the boom that drives the bucket, and the working attachments are attached to the boom to perform the bucket cleaning operation. Alternatively, a dedicated connecting boom for attaching the working attachments can be installed on the excavator.

[0061] The construction machinery can also include the aforementioned tools and attachments, as well as a vehicle body and boom similar to those on an excavator, that is, replacing the bucket of an excavator with working attachments to form a specialized bucket cleaning machine.

[0062] Of course, the construction machinery can also be a mobile vehicle body and connecting boom with other structural forms, and the working attachments are connected to the connecting boom and moved by driving.

[0063] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0064] The diagrams of devices and apparatuses involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices and apparatuses can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0065] It should also be noted that in the apparatus or equipment of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0066] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0067] It should be understood that the qualifying terms "first" and "second" used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0068] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A working attachment, characterized in that, The device includes a base (1) and a cleaning device (2) and a scraping device (3) both mounted on the base (1). The cleaning device (2) includes a cleaning disc (203) with cleaning filaments and a second drive device (201) for driving the cleaning disc (203) to rotate. The scraping device (3) includes a scraper (301), a main body fixing seat (302), and a first drive device (303) for driving the scraper (301) to move linearly relative to the base (1). The base (1) is provided with a guide structure, which includes a linear track (103). The scraper (301) is slidably connected to the linear track (103) through the main body fixing seat (302) and moves linearly along the linear track (103). The first driving device (303) and the linear track (103) are both located inside the base. The linear track (103) has multiple sections arranged around the main body fixing seat (302) and forming a sliding space in which the main body fixing seat (302) can extend and slide.

2. The working attachment as described in claim 1, characterized in that, The base (1) includes: Matrix (101); Scraper mounting base (106) is used to install the scraper device (3); A cleaning mounting base (102) is used to install the cleaning device (2).

3. The working attachment as described in claim 2, characterized in that, The substrate (101) is provided with: Kingpin (108) is used for hinged connection with the boom; Auxiliary pin (107) is used to hinge with the telescopic rod of the swing cylinder; The central axis of the auxiliary pin (107) is parallel to the central axis of the main pin (108).

4. The working attachment as described in claim 2, characterized in that, The cleaning mount (102) and / or the scraper mount (106) are detachably connected to the base (101).

5. The working attachment as described in claim 1, characterized in that, The base (1) also includes a detector mounting bracket (104) for fixing the detector and / or a hydraulic system mounting bracket (105) for fixing the hydraulic lines.

6. The working attachment as described in claim 1, characterized in that, The working attachment also includes an air blowing device that is detachably connected to the base (1).

7. An engineering machinery, characterized in that, The boom is provided, and the working attachment as described in any one of claims 1-6 is mounted on the working end of the boom.

8. The engineering machinery as described in claim 7, characterized in that, The engineering machinery mentioned is a tank cleaning machine.

Images