Detachable shell grab bucket with cleaning function

Abstract

The detachable shell grab bucket with the cleaning function comprises a machine frame, a connecting base is welded to the top of the machine frame, a mounting base is arranged at the top of the connecting base, an excavator connecting shaft is connected into the mounting base in an inserted mode, and the outer side of the excavator connecting shaft is connected with an excavator. According to the detachable shell grab bucket with the cleaning function, when the two bucket bodies rotate towards the outer side, materials fall down automatically, and meanwhile, a driving gear drives a driven gear meshed with the driving gear to rotate, so that a first scraping plate and a second scraping plate rotate along the inner walls of the bucket bodies, and residual materials on the inner walls of the bucket bodies are scraped off; according to the self-cleaning hopper, materials on the inner wall of the hopper body can be automatically cleaned, the workload of workers in the later period is reduced, the two first baffles extrude each other, stretch into the hopper body from the top of the hopper body and drive the two second baffles on the side faces to rotate upwards at the same time, the upper portion of the hopper body can be shielded, and therefore the materials in the hopper body are prevented from falling off or leaking from the top of the hopper body.

Description

Technical Field

[0001] The utility model relates to the technical field of shell grab buckets, in particular to a detachable shell grab bucket with a cleaning function. Background Art

[0002] Shell grab is a tool widely used in material handling and grabbing, especially in industries such as construction, ports and mining. Shell grab can be divided into many types according to its structural and functional characteristics, such as hydraulic reversal type and non-hydraulic reversal type. The hydraulic reversal type shell grab is controlled by adding a set of hydraulic valve blocks and pipelines, which is more flexible to operate; while the non-hydraulic reversal type uses the oil circuit of the excavator bucket cylinder, without the need for additional hydraulic equipment, and the cost is relatively low. The design of the shell grab gives it strong grabbing ability and adaptability, and it can quickly grab and sort various materials, such as construction waste, coal sand, ore, etc. At the same time, its unique shell-shaped structure also enables it to operate efficiently in a space-constrained environment;

[0003] Defect 1: In actual use, when the material grabbed by the jaw plate is relatively wet, the material is easy to adhere to the inner wall of the jaw plate. If it is not cleaned, the amount of material grabbed by the grab bucket each time will be reduced, affecting the efficiency of material grabbing. At the same time, the grab bucket in the prior art lacks cleaning equipment, and the material adhering to the inner wall of the jaw plate can only be cleaned manually, which is time-consuming and labor-intensive.

[0004] In order to solve the first defect, the first prior art (application number: 202022038927.8, Chinese patent application date: 2020-09-17) discloses a grab bucket that is easy to clean, in which the piston rod of the cylinder drives the push plate to move up and down, and the third movable plate is hinged to the push plate through the first connecting rod, and the first movable plate is hinged to the push plate through the sixth connecting rod, and the movement of the push plate drives the first movable plate and the third movable plate to move; the first movable plate is hinged to the second movable plate through the second connecting rod, and the third movable plate is hinged to the fourth connecting rod through the third connecting rod, the first movable plate drives the fourth connecting rod to move, and the third movable plate drives the second movable plate to move; the fourth connecting rod is fixedly connected to the gripper, the second movable plate is fixedly connected to the gripper, and the middle part of the left gripper is hinged to the right end of the second fixed seat through the fifth connecting rod, and the middle part of the right gripper is hinged to the left end of the second fixed seat through the fifth connecting rod, and the gripper is driven to move tightly through the first movable plate and the third movable plate;

[0005] The existing technology uses a motor to drive the rotating shaft to rotate, so that multiple groups of hammers hit the outer wall of the gripper to achieve the cleaning work inside the gripper. However, some materials adhere to the inner wall of the gripper and cannot be shaken off and cleaned by vibration alone, resulting in poor cleaning effect. At the same time, an additional power source is used to achieve the cleaning work of the gripper, which increases the cost of using the device.

[0006] Defect 2: Currently, most crane grab buckets used for loading and unloading operations only consist of the left and right jaws on the bucket body as the main working parts. During the lifting operation, since the capacity of the jaws on the bucket body is limited, when carrying too much cargo, it often falls or leaks, resulting in unnecessary waste. In addition, when lifting dusty cargo such as sand and gravel, the surrounding environment will be polluted due to leakage, which will affect the health of the construction workers.

[0007] In order to solve the second defect, the second prior art (application number: 202221967662.2, Chinese patent application date 2022-07-28) discloses a grab bucket device with good leak-proof performance. By providing a first grab bucket body, a second grab bucket body, a leak-proof cover body, a leak-proof seal and a sealing baffle, in actual use, excess goods will fall from the top of the first grab bucket body and the second grab bucket body to the inside of the leak-proof cover body for collection. During the closing process, the second grab bucket body and the first grab bucket body assist the second grab bucket body and the first grab bucket body to perform the closing action through the leak-proof seal, thereby making the first grab bucket body No goods will leak out of the connection between the grab body and the second grab body, thereby effectively avoiding the phenomenon of leakage or falling of goods during the lifting and transportation process, thereby ensuring the safety of the operation and having an environmental protection effect. Through the arrangement of the above structure, the problem of the grab device in the prior art often falling or leaking when carrying too much goods is effectively solved, thereby causing unnecessary waste, and in the process of lifting dusty goods such as sand and gravel, the surrounding environment will be polluted due to the occurrence of leakage, which will affect the health of the construction workers. In addition, the utility model has a simple structure, is easy to promote, and has strong practicality.

[0008] The existing technology uses leak-proof seals to assist the second grab bucket body and the first grab bucket body in closing, so that no goods will leak out at the connection between the first grab bucket body and the second grab bucket body. However, since the side of the top of the bucket body is not blocked, when the bucket body grabs the material and transports it to the designated location, the material inside the bucket body is easy to fall from the top or leak, causing unnecessary waste.

[0009] Therefore, we propose a detachable shell grab with cleaning function to solve the problems raised above. Utility Model Content

[0010] The purpose of the present utility model is to provide a detachable shell grab with a cleaning function, so as to solve the problem proposed in the above background technology that when the existing shell grab is used, some materials stick to the inner wall of the gripper, and they cannot be shaken off and cleaned by vibration alone, resulting in poor cleaning effect. At the same time, an additional power source is used to clean the gripper, which increases the use cost of the device. In addition, since the side of the top of the bucket body is not blocked, when the bucket body grabs the material and transports it to the designated location, the material inside the bucket body is easy to fall from the top or leak, causing unnecessary waste.

[0011] To achieve the above object, the utility model provides the following technical solution: a detachable shell grab with a cleaning function, comprising a frame, a connecting seat welded to the top of the frame, and a mounting seat provided on the top of the connecting seat, an excavator connecting shaft being plugged and connected inside the mounting seat, and the outer side of the excavator connecting shaft is connected to the excavator;

[0012] Also included: the left and right sides of the lower end of the frame are rotatably connected to the bucket body through a movable shaft, and the middle part of the outer side of the two movable shafts is provided with a lug plate, and an oil cylinder is installed between the two lug plates and the frame;

[0013] A valve block is provided on the front of the frame, and high-pressure oil pipes are installed between the valve block and the two oil cylinders. Side blades are fixed to the bottoms of the two buckets, and bottom blades are installed on the bottoms of the opposite sides of the two buckets.

[0014] Both ends of the two movable shafts are sleeved with driving gears, and the interiors of the two buckets are located below the driving gears and are connected to driven gears through shaft rotation, and the shaft ends of the two driven gears are sleeved with second scrapers;

[0015] The ends of the two second scrapers away from the driven gear are fixedly connected to the first scraper, one side of the inner wall of the two buckets is slidably connected to the first baffle, and the front and rear ends of the inner wall of the bucket are both provided with second baffles.

[0016] Preferably, both ends of the oil cylinder are hingedly connected to the side surface of the upper end of the frame and the side surface of the lug plate, and the end of the lug plate away from the oil cylinder is hingedly connected to the outside of the middle part of the movable shaft.

[0017] Preferably, the driving gear and the driven gear are meshed with each other, and the outer sides of the second scraper and the first scraper are in contact with the inner wall of the bucket body.

[0018] Preferably, the positions of the two first baffles correspond to each other, and the inner side of the first baffle is fixedly connected to one side of the two second baffles, and the two first baffles are rotatably connected to the inner wall of the bucket body through an axis.

[0019] Preferably, the outer sides of the two bucket bodies are bolted to fixed blocks, and the interiors of the two fixed blocks are bearing-connected to threaded rods, and fitting blocks are evenly spaced on the outer sides of the threaded rods, and striking blocks are provided on the sides of the fitting blocks inside the fixed blocks.

[0020] Preferably, a transmission shaft is fixed at both ends of the movable shaft, and the end of the transmission shaft away from the movable shaft is connected to the outer side of the threaded rod through a first bevel gear set, and the front threaded rod and one end of the left threaded rod are connected through a second bevel gear set.

[0021] Preferably, the side surfaces of one end of the fitting block and the striking block are both inclined, the inclined surfaces of the fitting block and the striking block fit together, the side surfaces of the striking block are slidably arranged inside the fixed block through a slider, and a return spring is installed at the connection position between the end of the slider and the fixed block.

[0022] Preferably, limiting grooves are provided at equal angles on the outer sides of both ends of the excavator connecting shaft, a worm is connected through one side of the interior of the mounting seat, and a worm wheel is connected to the interior of the mounting seat above the worm through an axis rotation, and limiting blocks are connected to the left and right sides of the interior of the mounting seat, and the bottoms of the two limiting blocks are connected to the fronts of the two worm wheels through movable plates.

[0023] Preferably, the position of the limit block corresponds to that of the limit slot, the worm and the mounting seat are rotationally connected, and the worm and the two worm wheels are meshingly connected, and the two ends of the movable plate are hingedly connected to the movable shaft and the worm wheel respectively.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the detachable shell grab with a cleaning function, when the two bucket bodies rotate outward, the material automatically falls down, and at the same time the driving gear drives the meshing driven gear to rotate, so that the first scraper and the second scraper rotate along the inner wall of the bucket body and scrape off the material remaining on the inner wall of the bucket, thereby being able to automatically clean the material on the inner wall of the bucket, reducing the workload of the later staff, and utilizing the two first baffles to squeeze each other and extend from the top of the bucket body, while driving the two second baffles on the side to rotate upward, which can shield the top of the bucket body, thereby preventing the material inside the bucket body from falling or leaking from the top. The specific contents are as follows:

[0025] 1. After the shell grab filled with materials is moved to the designated position by the hook machine, the oil cylinder contracts and drives the two bucket bodies to rotate outward around the frame through the ear plates. At this time, the materials in the bucket body fall down, and at the same time, the active gear drives the meshing driven gear to rotate, so that the first scraper and the second scraper rotate along the inner wall of the bucket body and scrape off the residual materials on the inner wall of the bucket, so that the materials on the inner wall of the bucket can be cleaned automatically, reducing the workload of the later staff;

[0026] Furthermore, when the two bucket bodies rotate inward, the driving gear drives the driven gear to rotate in the opposite direction, and drives the first scraper and the second scraper to rotate and reset;

[0027] 2. When the bucket rotates, the transmission shaft on the movable shaft drives a threaded rod to rotate using the first bevel gear set, and at the same time drives another threaded rod using the second bevel gear set, so that multiple fitting blocks move and squeeze the striking blocks, causing them to move and strike the outside of the bucket, thereby causing the inside of the bucket to vibrate, thereby shaking off the residual materials on the inner wall of the bucket and improving the cleaning effect of the bucket;

[0028] Furthermore, when the fitting block does not squeeze the striking block, the striking block moves and resets under the action of the slider and the reset spring;

[0029] 3. When the two buckets rotate inward, the two first baffles will squeeze each other and extend from the top of the bucket, while driving the two second baffles on the side to rotate upward, thus shielding the top of the bucket and preventing the material inside the bucket from falling or leaking from the top when the bucket grabs the material and transports it to the designated location;

[0030] 4. By rotating the worm forward, the worm drives the two worm wheels to rotate. At this time, the movable plate rotates and drives the limit block to move and separate from the limit slot, which can release the limit on the excavator connecting shaft, making it easy to quickly remove the shell grab. Then, when the worm is rotated in the opposite direction, the two worm wheels rotate in the opposite direction, and the movable plate is used to drive the limit block to reset, so that the limit block is inserted into the corresponding limit slot, completing the installation of the shell grab, making it easy to quickly replace the shell grab. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the closed structure of the bucket body of the utility model;

[0032] Figure 2 This is a schematic diagram of the bucket body opening structure of the utility model;

[0033] Figure 3 This is a schematic diagram of the main cross-sectional structure of the bucket body of the utility model;

[0034] Figure 4 This is a schematic diagram of the top cross-section structure of the bucket body and the fixed block of the utility model;

[0035] Figure 5 This is a schematic diagram of the three-dimensional structure of the first baffle and the second baffle of the utility model;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the worm and worm wheel of the utility model;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of the threaded rod and the striking block of the utility model;

[0038] Figure 8 For this utility model Figure 4 A in the middle is an enlarged structural diagram;

[0039] Figure 9 This is a schematic diagram of the main cross-sectional structure of the mounting seat of the utility model;

[0040] Figure 10 For this utility model Figure 9 Enlarged structural diagram at point B in the middle.

[0041] In the figure: 1. Frame; 2. Connecting seat; 3. Mounting seat; 4. Excavator connecting shaft; 5. Movable plate; 6. Bucket body; 7. Valve block; 8. Worm gear; 9. Cylinder; 10. Ear plate; 11. Limit block; 12. Side blade plate; 13. Bottom blade plate; 14. Fixed block; 15. First scraper; 16. Second scraper; 17. Driven gear; 18. Driving gear; 19. Threaded rod; 20. Fitting block; 21. Striking block; 22. Slider; 23. Return spring; 24. First baffle; 25. Second baffle; 26. Worm; 27. Movable shaft. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] See also Figures 1-10 , the utility model provides the following technical solutions: a detachable shell grab with a cleaning function;

[0044] Embodiment 1: In order to solve the problem that some materials stick to the inner wall of the gripper of the existing shell grab in the prior art when in use, and it is impossible to shake them off and clean them by vibration alone, resulting in poor cleaning effect, an additional power source is used to clean the gripper, which increases the cost of using the device. In addition, since the side of the top of the bucket body 6 is not blocked, when the bucket body 6 grabs the materials and transports them to the designated location, the materials inside the bucket body 6 are easy to fall from the top or leak, causing unnecessary waste. Therefore, the following solution is disclosed, and specific reference is made to Figures 1-4 and Figure 7 and Figure 8As shown, it includes a frame 1, a connecting seat 2 is welded on the top of the frame 1, and a mounting seat 3 is provided on the top of the connecting seat 2. The interior of the mounting seat 3 is plugged and connected with an excavator connecting shaft 4, and the outer side of the excavator connecting shaft 4 is connected to the excavator;

[0045] It also includes: the left and right sides of the lower end of the frame 1 are rotatably connected to the bucket body 6 through a movable shaft 27, and the middle part of the outer side of the two movable shafts 27 is provided with a lug plate 10, and the two ends of the oil cylinder 9 are respectively hingedly connected to the side of the upper end of the frame 1 and the side of the lug plate 10, and the end of the lug plate 10 away from the oil cylinder 9 is hinged to the outer side of the middle of the movable shaft 27, and the two lug plates 10 are installed between the oil cylinder 9; a valve block 7 is provided on the front of the frame 1, and high-pressure oil pipes are installed between the valve block 7 and the two oil cylinders 9, side blade plates 12 are fixed to the bottom of the two bucket bodies 6, and bottom blade plates 13 are installed on the bottom of the opposite sides of the two bucket bodies 6; both ends of the two movable shafts 27 are sleeved with a driving gear 18, and the inside of the two bucket bodies 6 is located below the driving gear 18 and is rotatably connected to the driven gear 17 through the shaft, and the shaft ends of the two driven gears 17 are sleeved with a second scraper 16, and there is a Meshing connection, the outer sides of the second scraper 16 and the first scraper 15 fit together with the inner wall of the bucket body 6, the outer sides of the two bucket bodies 6 are bolted to the fixed blocks 14, and the interiors of the two fixed blocks 14 are bearing-connected with threaded rods 19, both ends of the movable shaft 27 are fixed with transmission shafts, and the end of the transmission shaft away from the movable shaft 27 is connected to the outer side of the threaded rod 19 through a first bevel gear set, and the front threaded rod 19 and one end of the left threaded rod 19 are connected through a second bevel gear set, and fitting blocks 20 are sleeved on the outer side of the threaded rod 19 at equal intervals, and a striking block 21 is provided on the side of the fitting block 20 inside the fixed block 14, and the side surfaces of the fitting block 20 and one end of the striking block 21 are both inclined, and the inclined surfaces of the fitting block 20 and the striking block 21 fit together, and the side surface of the striking block 21 is slidably set inside the fixed block 14 through a slider 22, and a return spring 23 is installed at the connection position between the end of the slider 22 and the fixed block 14;

[0046] When in use, the shell grab is installed on the hook machine, and then the oil cylinder 9 is started, so that the two oil cylinders 9 extend at the same time, and the two bucket bodies 6 rotate inward and close, fixing the material in the bucket body 6. By controlling the valve block 7 and the pipeline, the expansion and contraction of the oil cylinder 9 can be accurately controlled, thereby realizing the closing and opening of the bucket body 6. After that, the shell grab filled with material is moved to the specified position, the oil cylinder 9 contracts and drives the two bucket bodies 6 to rotate outward around the frame 1 through the ear plate 10 to open. At this time, the material in the bucket body 6 automatically falls, and at the same time the movable shaft 27 rotates and drives the driving gear 18 to rotate, so that the driving gear 18 drives the meshing driven gear 17 to rotate. At this time, the first scraper 15 and the second scraper 16 move along the inner wall of the bucket body 6. It rotates and scrapes off the residual material on the inner wall of the bucket body 6, so that it can clean the material on the inner wall of the bucket body 6 by itself, reducing the workload of the later staff. At the same time, the transmission shaft on the movable shaft 27 uses the first bevel gear set to drive a threaded rod 19 to rotate, and uses the second bevel gear set to drive another threaded rod 19 to rotate, so that multiple fitting blocks 20 move and squeeze the striking block 21, prompting it to move and knock on the outside of the bucket body 6, and then causing the inside of the bucket body 6 to vibrate, so that the residual material on the inner wall of the bucket body 6 can be shaken off, improving the cleaning effect of the bucket body 6, and when the fitting block 20 does not squeeze the striking block 21, the striking block 21 is reset under the action of the slider 22 and the reset spring 23, and is used with the next knocking.

[0047] Embodiment 2: Different from embodiment 1, this embodiment utilizes the first baffle 24 and the second baffle 25 to block the top of the bucket 6 to prevent the material from falling or leaking. Figure 1 and Figure 5 As shown, one end of the two second scrapers 16 away from the driven gear 17 is fixedly connected to the first scraper 15, one side of the inner wall of the two bucket bodies 6 is slidably connected to the first baffle 24, and the front and rear ends of the inner wall of the bucket body 6 are provided with second baffles 25, the positions of the two first baffles 24 correspond to each other, and the inner side of the first baffle 24 is fixedly connected to one side of the two second baffles 25, and the two first baffles 24 are rotatably connected to the inner wall of the bucket body 6 through the shaft;

[0048] When the two bucket bodies 6 rotate inward, the two first baffles 24 will squeeze each other and extend from the top of the bucket body 6, while driving the two second baffles 25 on the side to rotate upward, which can block the top of the bucket body 6, thereby preventing the material inside the bucket body 6 from falling or leaking from the top when the bucket body 6 grabs the material and transports it to the designated location. Then, when the two bucket bodies 6 rotate outward, the two first baffles 24 slide downward and reset due to their own gravity, and drive the second baffle 25 to rotate downward and reset, so that it no longer blocks the top of the bucket body 6.

[0049] Example 3: Different from Example 2, this embodiment rotates the worm 26 in the forward direction to move the limit block 11 and separate it from the limit groove, thereby releasing the limit on the excavator connecting shaft 4, thereby facilitating the removal of the shell grab from the excavator. For details, refer to Figure 9 and Figure 10 As shown, the outer sides of both ends of the excavator connecting shaft 4 are provided with limiting grooves at equal angles, a worm 26 is connected through one side of the interior of the mounting seat 3, and the interior of the mounting seat 3 is located above the worm 26 and is rotatably connected to a worm wheel 8 through an axis, and the left and right sides of the interior of the mounting seat 3 are connected to limiting blocks 11, and the bottoms of the two limiting blocks 11 are connected to the front faces of the two worm wheels 8 through a movable plate 5, the limiting blocks 11 correspond to the positions of the limiting grooves, the worm 26 and the mounting seat 3 are rotationally connected, and the worm 26 and the two worm wheels 8 are meshedly connected, and the two ends of the movable plate 5 are hingedly connected to the movable shaft 27 and the worm wheel 8 respectively;

[0050] When the shell grab needs to be replaced, the staff rotates the worm 26 in the forward direction so that the worm 26 drives the two worm wheels 8 to rotate. At this time, the movable plate 5 rotates and drives the limit block 11 to move, so that the limit block 11 is separated from the limit groove, which can release the limit on the excavator connecting shaft 4, making it convenient to quickly remove the shell grab. Then, when the worm 26 is rotated in the reverse direction, the two worm wheels 8 rotate in the reverse direction, and the movable plate 5 is used to drive the limit block 11 to reset, so that the limit block 11 is inserted into the corresponding limit groove, limiting the excavator connecting shaft 4, completing the installation of the shell grab, and thus facilitating the rapid replacement of the shell grab.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detachable shell grab with a cleaning function, comprising a frame (1), a connecting seat (2) welded to the top of the frame (1), a mounting seat (3) provided on the top of the connecting seat (2), an excavator connecting shaft (4) plugged into the interior of the mounting seat (3), and an outer side of the excavator connecting shaft (4) connected to the excavator; Its characteristics are: Also includes; The left and right sides of the lower end of the frame (1) are rotatably connected to the bucket body (6) through a movable shaft (27), and the middle part of the outer side of the two movable shafts (27) is provided with a hanging ear plate (10), and an oil cylinder (9) is installed between the two hanging ear plates (10) and the frame (1); A valve block (7) is provided on the front of the frame (1), and high-pressure oil pipes are installed between the valve block (7) and the two oil cylinders (9). Side blade plates (12) are fixed to the bottoms of the two bucket bodies (6), and bottom blade plates (13) are installed on the bottoms of the opposite sides of the two bucket bodies (6). Both ends of the two movable shafts (27) are sleeved with driving gears (18), and the interiors of the two bucket bodies (6) are located below the driving gears (18) and are connected to driven gears (17) through shaft rotation, and the shaft ends of the two driven gears (17) are sleeved with second scrapers (16); One end of the two second scrapers (16) away from the driven gear (17) is fixedly connected to the first scraper (15), one side of the inner wall of the two bucket bodies (6) is slidably connected to the first baffle (24), and the front and rear ends of the inner wall of the bucket body (6) are both provided with second baffles (25).

2. The detachable shell grab bucket with cleaning function according to claim 1, characterized in that: Both ends of the oil cylinder (9) are hingedly connected to the side surface of the upper end of the frame (1) and the side surface of the lug plate (10), and the end of the lug plate (10) away from the oil cylinder (9) is hingedly connected to the outside of the middle of the movable shaft (27).

3. The detachable shell grab bucket with cleaning function according to claim 1, characterized in that: The driving gear (18) and the driven gear (17) are meshedly connected, and the outer sides of the second scraper (16) and the first scraper (15) are in contact with the inner wall of the bucket body (6).

4. The detachable shell grab bucket with cleaning function according to claim 1, characterized in that: The positions of the two first baffles (24) correspond to each other, and the inner sides of the first baffles (24) are fixedly connected to one side of the two second baffles (25). The two first baffles (24) are rotatably connected to the inner wall of the bucket body (6) via an axis.

5. The detachable shell grab bucket with cleaning function according to claim 1, characterized in that: The outer sides of the two bucket bodies (6) are both bolted to fixed blocks (14), and the interiors of the two fixed blocks (14) are both bearing-connected to threaded rods (19), and fitting blocks (20) are sleeved on the outer sides of the threaded rods (19) at equal intervals, and striking blocks (21) are provided inside the fixed blocks (14) on the sides of the fitting blocks (20).

6. The detachable shell grab bucket with cleaning function according to claim 5, characterized in that: A transmission shaft is fixed to both ends of the movable shaft (27), and the end of the transmission shaft away from the movable shaft (27) is connected to the outer side of the threaded rod (19) through a first bevel gear set, and the front threaded rod (19) and one end of the left threaded rod (19) are connected through a second bevel gear set.

7. The detachable shell grab bucket with cleaning function according to claim 6, characterized in that: The side surfaces of one end of the fitting block (20) and the striking block (21) are both inclined, and the inclined surfaces of the fitting block (20) and the striking block (21) fit together. The side surface of the striking block (21) is slidably arranged inside the fixed block (14) via a slider (22), and a return spring (23) is installed at the connection position between the end of the slider (22) and the fixed block (14).

8. The detachable shell grab bucket with cleaning function according to claim 1, characterized in that: Limiting grooves are provided at equal angles on the outer sides of both ends of the excavator connecting shaft (4); a worm (26) is connected through one side of the interior of the mounting seat (3); a worm wheel (8) is connected to the interior of the mounting seat (3) above the worm (26) through an axis; limiting blocks (11) are connected to the left and right sides of the interior of the mounting seat (3); and the bottoms of the two limiting blocks (11) and the front faces of the two worm wheels (8) are connected through movable plates (5).

9. The detachable shell grab bucket with cleaning function according to claim 8, characterized in that: The position of the limit block (11) corresponds to the position of the limit slot, the worm (26) and the mounting seat (3) are rotationally connected, and the worm (26) and the two worm wheels (8) are meshingly connected, and the two ends of the movable plate (5) are respectively hingedly connected to the movable shaft (27) and the worm wheel (8).

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