An angle-adjustable excavator swing arm bucket

Abstract

The application discloses an angle-adjustable excavator swing arm bucket and relates to the technical field of excavator accessories.The angle-adjustable excavator swing arm bucket comprises a back hanging plate and further comprises a supporting plate one, a main swing arm, a bucket, an angle adjusting assembly one, an angle adjusting assembly two and a supporting assembly; the supporting plate one is provided with two supporting plates one which are horizontally fixedly installed at the top and the bottom of one end of the back hanging plate respectively; the main swing arm is arranged at one end of the back hanging plate; the bucket is arranged at the other end of the main swing arm; the angle adjusting assembly one is arranged at the top of the main swing arm and away from one end of the back hanging plate; the angle adjusting assembly two is installed at one end of the main swing arm close to the back hanging plate; and the supporting assembly is arranged at the top of one of the supporting plates one.The angle-adjustable excavator swing arm bucket has the beneficial effects that the left and right angle adjustment of the main swing arm and the overturning of the bucket are coordinated, the hydraulic system is accurately controlled in speed, the operation is stable, the complex working conditions are adapted, and the operation is convenient.

Description

Technical Field

[0001] This application relates to the field of excavator parts technology, and in particular to an angle-adjustable excavator boom bucket. Background Technology

[0002] Regarding the operational adaptability of excavator boom buckets, it is generally necessary to meet the multi-angle adjustment requirements under complex working conditions, such as slope excavation and operation in confined spaces. Specifically, an adjustment mechanism is needed to match the angle between the bucket and the main boom to adapt to different inclinations of the working surface (due to potential slopes or obstacles on the ground). These angle parameters are used to assist in controlling the bucket to complete digging, unloading, and other actions. To ensure stable operation of the bucket under various working conditions, a reliable angle adjustment and power transmission structure is required. In existing technologies, most excavator boom buckets adopt an angle adjustment structure of "single hydraulic cylinder + integrated linkage," meaning that a single hydraulic cylinder simultaneously drives the main boom and bucket. However, on the one hand, the power output of a single hydraulic cylinder is difficult to match the differentiated load requirements of the main boom and bucket. During heavy-duty excavation (such as in hard soil or gravel layers), insufficient force transmission rigidity can easily cause angle lag, resulting in deviations in the left and right adjustment of the main boom and inaccurate bucket tilting angle against the working surface. On the other hand, the integrated linkage prevents the main boom and bucket from being finely adjusted independently. If it is necessary to adjust the angle of the main boom to avoid obstacles, the bucket will tilt synchronously with the linkage, requiring repeated corrections of the overall machine position, which is cumbersome and inefficient. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an angle-adjustable excavator boom bucket. Its advantages include: coordinated adjustment of the main boom's left and right angles with bucket tilting; precise speed control via the hydraulic system; stable operation adaptable to complex working conditions; and convenient operation.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: an angle-adjustable excavator swing arm bucket, comprising: a backplate, and further comprising: a support plate one, a main swing arm, a bucket, an angle adjustment component one, an angle adjustment component two, and a support component; there are two support plates one, which are respectively horizontally fixedly installed at the top and bottom of one end of the backplate one; the main swing arm is disposed at one end of the backplate; the bucket is disposed at the other end of the main swing arm; the angle adjustment component one is disposed at the top end of the main swing arm away from the backplate; the angle adjustment component two is installed at the end of the main swing arm close to the backplate; the support component is disposed on the top of one of the support plates one.

[0005] Preferably, the angle adjustment assembly one includes: a mounting bracket one, a mounting bracket two, and a hydraulic cylinder one. One end of the mounting bracket one is fixedly installed on the outer wall of one end of the bucket, and the bottom of the other end of the mounting bracket one is hinged to the end of the main swing arm away from the back plate. The mounting bracket two is fixedly installed at the middle position of the top of the main swing arm. One end of the hydraulic cylinder one is hinged to the mounting bracket two, and the other end of the hydraulic cylinder one is hinged to the top of the other end of the mounting bracket one. The angle adjustment assembly two includes: two mounting plates, a connecting rod one, a connecting rod two, a hydraulic cylinder two, and a rotating shaft. The two mounting plates are respectively horizontally fixedly installed at the top and bottom of the main swing arm near the back plate, and the rotating shaft is vertically rotatably installed therein. Between the bottom of one support plate and the top of another support plate, the bottom of the rotating shaft passes sequentially through one of the mounting plates, the main swing arm, and the end of the bottom of the other mounting plate away from the back plate. A connecting rod is vertically and rotatably installed between the bottom of one support plate and the top of the other support plate. A connecting rod is vertically and rotatably installed between the bottom of one mounting plate and the top of the other mounting plate. A hydraulic cylinder is horizontally arranged, with one end fixedly installed to the connecting rod and the other end fixedly installed to the connecting rod. A hydraulic system is provided between the hydraulic cylinder and the hydraulic cylinder.

[0006] Preferably, the hydraulic system includes: a pressure oil interface, a return oil interface, a balance valve, a solenoid valve, two adjustable joints, two throttle valves, and several hydraulic lines. The pressure oil interface is used to connect to the pressure oil source of an external loader, and the return oil interface is used to connect to an external return oil circuit. The balance valve is fixedly installed on the hydraulic line near the pressure oil interface. The inlet of the balance valve is directly connected to the pressure oil interface through the hydraulic line, and the return of the balance valve is directly connected to the return oil interface through the hydraulic line. The solenoid valve is provided with a main inlet, a main outlet, a first branch inlet, a first branch return outlet, a second branch inlet, and a second branch outlet. The main inlet of the solenoid valve is connected to the outlet of the balance valve through the hydraulic line, and the main return outlet of the solenoid valve is connected through the hydraulic line. The hydraulic cylinder 1 is connected to the return end of the balance valve. It has a rodless chamber port 1 and a rod chamber port 1. The first branch inlet is connected to the rodless chamber port 1 via a hydraulic line, and the first branch return port is connected to the rod chamber port 1 via a hydraulic line. The hydraulic cylinder 2 has a rodless chamber port 2 and a rod chamber port 2. One end of each of the two adjustable connectors is fixedly connected to the second branch inlet and the second branch outlet, respectively. The other end of each of the two adjustable connectors is fixedly connected to one end of each of the two throttle valves. The other end of each of the two throttle valves is connected to the rodless chamber port 2 and the rod chamber port 2 of the hydraulic cylinder 2 via a hydraulic line, respectively. The second branch inlet is correspondingly located to the rodless chamber port 2, and the second branch outlet is correspondingly located to the rod chamber port 2.

[0007] Preferably, the support assembly includes: a plurality of triangular stabilizing plates and two second support plates, wherein the plurality of triangular stabilizing plates are arranged and installed on the top of the first support plate located above, and the two second support plates are respectively vertically fixed on both sides of the back plate.

[0008] Preferably, an auxiliary claw is hinged to the bottom of the main swing arm at the end away from the back plate, and the end of the auxiliary claw near the bucket is serrated. A mounting bracket three is fixedly installed at the bottom of the main swing arm at the end away from the back plate. A plurality of mounting holes are equally spaced on one side of the mounting bracket three. A connecting plate is hinged to the other end of the auxiliary claw, and the end of the connecting plate away from the auxiliary claw is connected to the mounting bracket three through one of the mounting holes.

[0009] Compared with the prior art, the beneficial effects of this application are as follows: (1) This utility model proposes an angle-adjustable excavator swing arm bucket, which is equipped with a back plate and also includes: a support plate 1, a main swing arm, a bucket, a mounting frame 1, a mounting frame 2, a hydraulic cylinder 1, two mounting plates, a connecting rod 1, a connecting rod 2, a hydraulic cylinder 2, and a rotating shaft. When adjusting the angle of the main swing arm, the extension and retraction of the hydraulic cylinder 2 pushes the connecting rod 2 to rotate around the rotating shaft, thereby driving the main swing arm to adjust the angle to align with the digging position. When adjusting the bucket tilting angle, the extension and retraction of the hydraulic cylinder 1 pushes or pulls the mounting frame 1 to rotate around the hinge point with the main swing arm, thereby accurately adjusting the bucket opening angle. During digging, the hydraulic cylinder 1 and the hydraulic cylinder 2 can be controlled in coordination. For example, when digging on a slope, the main swing arm and the bucket can be linked to adapt to the working conditions. After digging is completed, the main swing arm is first driven to the unloading position by the hydraulic cylinder 2, and then the bucket is tilted to unload by the hydraulic cylinder 1. After the operation is completed, the structure is controlled to reset, thereby realizing the coordination of the left and right angle adjustment of the main swing arm and the bucket tilting. The operation is stable and adaptable to complex working conditions, and the operation is convenient.

[0010] (2) This utility model proposes an angle-adjustable excavator boom bucket. It is equipped with a pressure oil interface, a return oil interface, a balance valve, a solenoid valve, two adjustable joints, two throttle valves and several hydraulic lines. Before operation, the external oil source is connected to the pressure oil interface, the return oil line is connected to the return oil interface, the control box is set to the neutral position, the solenoid valve core is closed, the flow valve is adjusted to preset the oil speed, the control box is moved up → the solenoid valve core is switched → the pressure oil enters the hydraulic cylinder 2 through the balance valve, the adjustable joint, and the throttle valve → the piston rod telescopic belt connecting rod 1 and connecting rod 2 → the main boom swings around the rotating shaft and resets the control box when it reaches the position; the control box is moved down → the solenoid valve core is switched again → the pressure oil enters the hydraulic cylinder 1 → the piston rod telescopic belt mounting bracket 1 → the bucket flips. The control box is moved alternately for complex working conditions. The balance valve and the throttle valve control the speed to prevent the hydraulic cylinder 1 and hydraulic cylinder 2 from moving too fast, so as to realize the precise speed control of the hydraulic system and the stable operation to adapt to complex working conditions. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present invention.

[0012] Figure 2 This is a perspective view highlighting the second connecting rod in this utility model.

[0013] Figure 3 This is a flowchart of the hydraulic system in this utility model.

[0014] In the diagram: 1. Backplate; 7. Support plate one; 8. Main swing arm; 9. Bucket; 301. Mounting bracket one; 302. Mounting bracket two; 303. Hydraulic cylinder one; 304. Mounting plate; 305. Connecting rod one; 306. Connecting rod two; 307. Hydraulic cylinder two; 308. Rotating shaft; 201. Pressure oil interface; 202. Return oil interface; 203. Balance valve; 204. Solenoid valve; 205. Adjustable connector; 206. Throttle valve; 207. Hydraulic pipeline; 601. Rodless chamber oil port one; 602. Rod chamber oil port one; 603. Rodless chamber oil port two; 604. Rod chamber oil port two; 401. Triangular stabilizing plate; 402. Support plate two; 501. Auxiliary claw; 502. Mounting bracket three; 503. Connecting plate. Detailed Implementation

[0015] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0017] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0018] One preferred embodiment of this application, such as Figures 1 to 3 As shown, an angle-adjustable excavator boom bucket includes: a backplate 1, and further includes: a support plate 7, a main boom 8, a bucket 9, an angle adjustment component 1, an angle adjustment component 2, and a support component; there are two support plates 7, which are horizontally fixedly installed at the top and bottom of one end of the backplate 1, respectively; the main boom 8 is located at one end of the backplate 1; the bucket 9 is located at the other end of the main boom 8; the angle adjustment component 1 is located at the top end of the main boom 8 away from the backplate 1; the angle adjustment component 2 is installed at the end of the main boom 8 close to the backplate 1; and the support component is located on the top of one of the support plates 7.

[0019] First, fix the backplate 1 to the excavator body. When digging, activate angle adjustment component 2 to drive the main swing arm 8 to rotate around the pivot point, thereby adjusting the working angle and lateral position of the bucket 9. If it is necessary to adjust the tilting angle of the bucket 9 to adapt to different digging depths or material cutting requirements, activate angle adjustment component 1. The component drives the bucket 9 to rotate independently relative to the main swing arm 8, achieving precise material cutting or loading. After digging is completed, activate angle adjustment component 2 to reverse the action, driving the main swing arm 8 to rotate to the unloading position. Then activate angle adjustment component 1 to drive the bucket 9 to tilt, completing the material unloading. After unloading, angle adjustment component 2 drives the main swing arm 8 to return to the initial position, and the support component returns to the initial state simultaneously, preparing for the next operation. This achieves coordinated adjustment of the left and right angles of the main swing arm and bucket tilting. At the same time, the hydraulic system precisely controls the speed, ensuring stable operation to adapt to complex working conditions and convenient operation.

[0020] Further reference Figures 1-3 Angle adjustment component one includes: mounting bracket one 301, mounting bracket two 302, and hydraulic cylinder one 303. One end of mounting bracket one 301 is fixedly installed on the outer wall of one end of bucket 9, and the bottom of the other end of mounting bracket one 301 is hinged to the end of main swing arm 8 away from back plate 1. Mounting bracket two 302 is fixedly installed at the middle position of the top of main swing arm 8. One end of hydraulic cylinder one 303 is hinged to mounting bracket two 302, and the other end of hydraulic cylinder one 303 is hinged to the top of the other end of mounting bracket one 301. Angle adjustment component two includes: two mounting plates 304, connecting rod one 305, connecting rod two 306, hydraulic cylinder two 307, and rotating shaft 308. The two mounting plates 304 are horizontally fixedly installed on the top and bottom of main swing arm 8 near the back plate 1, respectively. The rotating shaft 308 rotates vertically. The rotating shaft 308 is installed between the bottom of one support plate 7 and the top of the other support plate 7. The bottom of the rotating shaft 308 passes through one mounting plate 304, the main swing arm 8, and the end of the bottom of the other mounting plate 304 away from the back plate 1. The connecting rod 305 is vertically rotatably installed between the bottom of one support plate 7 and the top of the other support plate 7. The connecting rod 306 is vertically rotatably installed between the bottom of one mounting plate 304 and the top of the other mounting plate 304. The hydraulic cylinder 307 is horizontally set. One end of the hydraulic cylinder 307 is fixedly installed with the connecting rod 305, and the other end of the hydraulic cylinder 307 is fixedly installed with the connecting rod 306. A hydraulic system is provided between the hydraulic cylinder 303 and the hydraulic cylinder 307.

[0021] First, fix the backplate 1 to the excavator body. When it is necessary to adjust the angle of the main swing arm 8 to align with the digging area, activate hydraulic cylinder 2 307. When hydraulic cylinder 2 307 extends or retracts, it will push connecting rod 2 306 to rotate around the rotating shaft 308. The main swing arm 8 will rotate around the rotating shaft 308 with the movement of connecting rod 2 306, realizing horizontal angle adjustment until the bucket 9 is aligned with the digging position. If it is necessary to adjust the tilting angle of the bucket 9 to match the digging cutting angle, activate hydraulic cylinder 1 303. When hydraulic cylinder 1 303 extends, it will push mounting bracket 1 301 to rotate around its hinge point with the main swing arm 8, causing the bucket 9 to tilt to an increased angle with the opening facing upwards. When hydraulic cylinder 1 303 retracts, it will pull mounting bracket 1 301 to rotate in the opposite direction, reducing the angle with the bucket 9 opening upwards, thus completing the precise adjustment of the bucket tilting angle. During digging, hydraulic cylinder 1 303 and hydraulic cylinder 2 307 can be controlled in coordination. For example, when digging on a slope, hydraulic cylinder 2 307 drives the main swing arm 8 to rotate around the shaft 308. The rotating shaft 308 rotates to adapt to the lateral position of the slope, while the hydraulic cylinder 303 drives the bucket 9 to tilt to fit the slope's inclination angle, achieving coordinated operation. When unloading is required after excavation, the main swing arm 8 is first driven to rotate around the rotating shaft 308 to the unloading position via the hydraulic cylinder 307. Then, the hydraulic cylinder 303 is activated to extend or shorten, pushing the mounting frame 301 to rotate in the opposite direction, allowing the bucket 9 to tilt around the hinge point to face downwards, unloading the material. After the operation is completed, the hydraulic cylinder 307 is controlled to return to the retracted state, and the main swing arm 8 returns to the horizontal initial position around the rotating shaft 308 with the retraction of the connecting rod 306 and the connecting rod 305. At the same time, the hydraulic cylinder 303 is controlled to return to the retracted state, and the mounting frame 301 drives the bucket 9 to return to horizontal. All components return to their initial state, waiting for the next operation. This achieves coordinated adjustment of the left and right angles of the main swing arm and the tilting of the bucket. At the same time, the hydraulic system precisely controls the speed, ensuring stable operation and adaptability to complex working conditions, and is easy to operate.

[0022] Further reference Figures 1-3The hydraulic system includes: a pressure oil interface 201, a return oil interface 202, a balance valve 203, a solenoid valve 204, two adjustable joints 205, two throttle valves 206, and several hydraulic lines 207. The pressure oil interface 201 is used to connect to the external pressure oil source of the loader, and the return oil interface 202 is used to connect to the external return oil circuit. The balance valve 203 is fixedly installed on the hydraulic line 207 near the pressure oil interface 201. The oil inlet of the balance valve 203 is directly connected to the pressure oil interface 201 through the hydraulic line 207, and the oil return of the balance valve 203 is directly connected to the return oil interface 202 through the hydraulic line 207. The solenoid valve 204 is provided with a main oil inlet, a main oil outlet, a first branch oil inlet, a first branch return oil outlet, a second branch oil inlet, and a second branch outlet. The main oil inlet of the solenoid valve 204 is connected to the outlet of the balance valve 203 through the hydraulic line 207, and the main oil return of the solenoid valve 204 is connected to... The hydraulic cylinder 303 is connected to the return end of the balance valve 203 via hydraulic line 207. Hydraulic cylinder 303 has a rodless chamber port 601 and a rod chamber port 602. The first branch inlet is connected to the rodless chamber port 601 via hydraulic line 207, and the first branch return port is connected to the rod chamber port 602 via hydraulic line 207. Hydraulic cylinder 307 has a rodless chamber port 603 and a rod chamber port 604. One end of each of the two adjustable connectors 205... The two adjustable connectors 205 are fixedly connected to the second branch oil inlet and the second branch oil outlet respectively. The other ends of the two adjustable connectors 205 are fixedly connected to one end of the two throttle valves 206 respectively. The other ends of the two throttle valves 206 are connected to the rodless chamber oil port 603 and the rod chamber oil port 604 of the hydraulic cylinder 307 respectively through the hydraulic pipeline 207. The second branch oil inlet is set to correspond to the rodless chamber oil port 603, and the second branch oil outlet is set to correspond to the rod chamber oil port 604.

[0023] Before operation, connect the external loader's pressure oil source to the hydraulic system's pressure oil interface 201 via a quick connector, and connect the external return oil circuit to the return oil interface 202 via a quick connector. Then, turn the toggle switch control box to the neutral position. At this time, the valve core inside the solenoid valve 204 is in the initial position, and its first branch inlet, first branch return, second branch inlet, and second branch outlet are all closed. Depending on the working conditions, such as digging hard soil or unloading, rotate the two throttle valves 206 to preset the hydraulic oil flow rate, and the auxiliary balance valve 203 achieves dual flow control. If it is necessary to adjust the left and right swing of the main swing arm 8 to align with the working position, turn the toggle switch control box upward. The control box outputs a current signal to drive the valve core inside the solenoid valve 204 to switch, and the valve core blocks the first branch inlet and return. One branch oil inlet and the first branch oil return port cut off the oil circuit of hydraulic cylinder 303, only opening the passage between the main oil inlet and the second branch oil inlet, and between the main oil return port and the second branch oil outlet. The pressure oil from the external loader enters through the pressure oil interface 201, first flowing through the oil inlet of the balance valve 203. The balance valve 203 controls the hydraulic oil flow resistance by adjusting the opening of the internal valve core. After being stabilized, the pressure oil enters the main oil inlet of the solenoid valve 204 through the hydraulic pipeline 207, and then flows out through the second branch oil inlet, passing through one of the adjustable joints 205 and the corresponding throttle valve 206 in sequence, and finally injects into the rodless chamber oil port 603 of hydraulic cylinder 307 through the hydraulic pipeline 207. The pressure oil pushes the piston rod of hydraulic cylinder 307 to extend and retract, driving the angle adjustment component 2. The connecting rods 305 and 306 work together to make the main swing arm 8 swing left and right around the rotating shaft 308. The return oil in the rod chamber of the hydraulic cylinder 307 flows out from the rod chamber oil port 604, passes through another throttle valve 206 and the corresponding adjustable connector 205, enters the second branch oil outlet of the solenoid valve 204, and then flows through the main return oil port to the return oil end of the balance valve 203. Finally, it flows back to the external loader return oil circuit through the return oil interface 202. After the main swing arm 8 reaches the preset angle, the control box is turned back to the neutral position, the valve core of the solenoid valve 204 is reset, the second branch oil circuit is cut off, and the hydraulic cylinder 307 stops moving. If it is necessary to adjust the tilting angle of the bucket 9 to adapt to the digging cutting or unloading requirements, the toggle switch control box is turned down, and the current signal drives the solenoid valve 204. The valve core switches again, blocking the second branch inlet and outlet, cutting off the oil circuit of hydraulic cylinder 307. Only the main inlet and the first branch inlet, and the main return port and the first branch return port are open. Pressure oil flows through pressure oil interface 201 → balance valve 203 → solenoid valve 204 main inlet → first branch inlet, and through hydraulic line 207 into the rodless chamber port 601 of hydraulic cylinder 303. The pressure oil pushes the piston rod of hydraulic cylinder 303 to extend and retract, pulling the mounting bracket 301 in angle adjustment assembly 1 to rotate around its hinge point with the main swing arm 8, thereby causing the bucket 9 to tilt. The return oil in the rod chamber of hydraulic cylinder 303 flows out from the rod chamber port 602 and enters the first branch return port of solenoid valve 204 through hydraulic line 207.The oil then flows back through the main return port → the return end of the balance valve 203 → the return port 202. In complex working conditions such as slope excavation, the control box can be alternately moved. First, move it upwards to adjust the angle of the main swing arm 8 to match the lateral position of the slope, then move it downwards to adjust the tilting angle of the bucket 9 to match the inclination angle of the slope, achieving coordinated operation. After the operation is completed, return the control box to the center position and move it downwards and upwards respectively to drive hydraulic cylinders 303 and 307 to retract and reset, causing the bucket 9 to be horizontal and the main swing arm 8 to be centered. Disconnect the quick connectors at the pressure oil port 201 and the return port 202 to ensure that all components are in normal condition for the next operation. This achieves independent operation and non-interference between hydraulic cylinders 303 and 307. Dual flow control through the balance valve 203 and the throttle valve 206 prevents excessive speed of hydraulic cylinders 303 and 307 from causing safety risks and ensures stable operation.

[0024] Further reference Figures 1-2 The support components include: several triangular stabilizing plates 401 and two support plates 402. The several triangular stabilizing plates 401 are arranged and installed on the top of the support plate 7 located above, and the two support plates 402 are respectively vertically fixed on both sides of the back plate 1.

[0025] The triangular stabilizing plate 401 supports the support plate 7 and the main swing arm 8. During operation, the lateral torque transmitted by the main swing arm 8 acts on the support plate 7. The triangular stabilizing plate 401 disperses the torque by means of the triangular structure stability, indirectly supporting the main swing arm 8 and avoiding local deformation of the support plate 7. The second support plate 402 supports the back plate 1. The force borne by the main swing arm 8 is transmitted to the back plate 1, reducing the shaking and offset of the back plate 1, ensuring structural stability during rotation, realizing stable operation of the bucket under heavy load, and making operation convenient.

[0026] Further reference Figures 1-2 The bottom of the main swing arm 8 is hinged to an auxiliary claw 501 at the end away from the back plate 1. The end of the auxiliary claw 501 near the bucket 9 is serrated. The bottom of the main swing arm 8 is fixedly mounted to a mounting bracket 3 502 at the end away from the back plate 1. Several mounting holes are equally spaced on one side of the mounting bracket 3 502. The other end of the auxiliary claw 501 is hinged to a connecting plate 503. The end of the connecting plate 503 away from the auxiliary claw 501 is connected to the mounting bracket 3 502 through one of the mounting holes.

[0027] Depending on the size of the material to be processed or the gripping requirements, first loosen the fasteners, such as bolts, at the connection between the connecting plate 503 and the mounting frame 502. Adjust the connection point of the connecting plate 503 by selecting different mounting holes on the mounting frame 502. The closer the hole is to the hinge end between the auxiliary claw 501 and the main swing arm 8, the smaller the angle between the auxiliary claw 501 and the bucket 9, which is suitable for gripping smaller materials. The farther the hole is from the hinge end, the larger the angle, which is suitable for gripping larger materials. After adjusting to the appropriate angle, re-lock and fix the connecting plate 503 and the mounting frame 502 with the fasteners. During operation, the main swing arm 8 drives the bucket 9 to move simultaneously. The auxiliary claw 501 moves synchronously with the main swing arm 8. The serrated end of the auxiliary claw 501 near the bucket 9 forms an enclosed space with the inner wall of the bucket 9. The serrated structure can enhance the friction with the material surface and prevent the material from slipping during digging or lifting. It works with the bucket 9 to complete the grabbing and lifting of the material. After the operation is completed, the fasteners of the connecting plate 503 and the mounting frame 3 502 are loosened, and the connecting plate 503 is re-fixed at the initial mounting hole of the mounting frame 3 502. At this time, the auxiliary claw 501 hangs down naturally or fits against the bottom of the main swing arm 8 to avoid interference with the bucket 9 and other parts of the main swing arm 8, and does not affect the subsequent regular digging and unloading operations of the bucket 9.

[0028] Working principle: Before operation, first fix the backplate 1 to the excavator body, then connect the external loader's pressure oil source to the pressure oil interface 201 through a quick connector, and connect the external return oil circuit to the return oil interface 202 through a quick connector. Then, turn the toggle switch control box to the neutral position. At this time, the valve core inside the solenoid valve 204 is in the initial position, and its first branch oil inlet, first branch oil return, second branch oil inlet, and second branch oil outlet are all in a closed state. According to the working conditions, such as digging hard soil and unloading, the adjustment knobs of the two throttle valves 206 are preset to control the hydraulic oil flow speed. The auxiliary balance valve 203 realizes dual flow control. When it is necessary to adjust the angle of the main swing arm 8 to align with the digging area, turn the toggle switch control box upward, and the control box outputs a current signal to drive the hydraulic oil flow. The internal valve core of solenoid valve 204 switches, blocking the first branch oil inlet and the first branch oil return, cutting off the oil circuit of hydraulic cylinder 303, and only opening the passage between the main oil inlet and the second branch oil inlet, and between the main oil return and the second branch oil outlet. The pressure oil from the external loader enters through the pressure oil interface 201, first flows through the oil inlet of the balance valve 203, and after being stabilized, the pressure oil enters the main oil inlet of solenoid valve 204 through hydraulic pipeline 207, and then flows out from the second branch oil inlet, passing through one of the adjustable joints 205 and the corresponding throttle valve 206 in sequence, and finally injects into the rodless chamber oil port 603 of hydraulic cylinder 307 through hydraulic pipeline 207. The pressure oil pushes the piston rod of hydraulic cylinder 307 to extend and retract, driving connecting rod 305 and connecting rod 306. The linkage causes the main swing arm 8 to rotate around the rotating shaft 308. The return oil in the rod chamber of the second hydraulic cylinder 307 flows out from the rod chamber oil port 604, passes through another throttle valve 206 and the corresponding adjustable connector 205, enters the second branch oil outlet of the solenoid valve 204, and then flows through the main return oil port to the return oil end of the balance valve 203. Finally, it flows back to the external loader's return oil circuit through the return oil interface 202. After the main swing arm 8 reaches the preset angle, the control box is turned back to the neutral position. If it is necessary to adjust the tilting angle of the bucket 9 to adapt to the digging and cutting requirements, the toggle switch control box is turned down. The current signal drives the valve core of the solenoid valve 204 to switch again. The valve core blocks the second branch oil inlet and the second branch oil outlet, cutting off the oil circuit of the second hydraulic cylinder 307, and only conducting the main oil inlet and the first branch oil inlet. The passage between the main return port and the first branch return port allows pressurized oil to flow through pressurized oil interface 201 → balance valve 203 → solenoid valve 204 main inlet → first branch inlet, and then through hydraulic pipeline 207 into the rodless chamber port 601 of hydraulic cylinder 303. The pressurized oil pushes the piston rod of hydraulic cylinder 303 to extend and retract, pulling the mounting bracket 301 to rotate around its hinge point with the main swing arm 8, thereby causing the bucket 9 to tilt. Return oil from the rod chamber of hydraulic cylinder 303 flows out from rod chamber port 602, enters the first branch return port of solenoid valve 204 through hydraulic pipeline 207, and then flows back through the main return port → balance valve 203 return end → return interface 202. After the bucket 9 reaches the appropriate angle, it returns to the neutral position. In complex working conditions such as slope excavation, the control box can be alternately operated.First, adjust the angle of the main swing arm 8 upwards to align with the lateral position of the slope. At this time, the triangular stabilizing plate 401 uses the stability of the triangular structure to distribute the lateral torque transmitted by the main swing arm 8 to the support plate 7. The support plate 402 enhances the anti-bending ability of the back plate 1. Then, adjust the tilting angle of the bucket 9 downwards to align with the slope's inclination angle. When unloading is required after excavation, first, adjust the control box to drive the hydraulic cylinder 307 to rotate the main swing arm 8 around the rotating shaft 308 to the unloading position. Then, adjust the control box to drive the hydraulic cylinder 303 to push the mounting frame 301 to rotate in the opposite direction, causing the bucket 9 to tilt around the hinge point to unload with the opening facing downwards. At the same time, depending on the size of the material to be processed or the gripping requirements, first, loosen the fasteners at the connection between the connecting plate 503 and the mounting frame 502. Adjust the connection point of the connecting plate 503 by selecting different mounting holes on the mounting frame 502 to adjust the auxiliary claw 50. The angle between the main swing arm 1 and the bucket 9 is adjusted and then re-locked. During operation, the auxiliary claw 501 moves synchronously with the main swing arm 8. Its serrated end forms an enclosed space with the inner wall of the bucket 9 to prevent material from slipping. After the operation is completed, the control box is returned to the center position. The control box is then moved down and up respectively to drive the hydraulic cylinder 1 303 and hydraulic cylinder 2 307 to retract and reset, driving the bucket 9 to be horizontal and the main swing arm 8 to be centered. At the same time, the fasteners of the connecting plate 503 and the mounting bracket 3 502 are loosened, and the connecting plate 503 is re-fixed to the initial mounting hole of the mounting bracket 3 502 so that the auxiliary claw 501 hangs down naturally or fits against the bottom of the main swing arm 8. Finally, the quick connectors at the pressure oil interface 201 and the return oil interface 202 are disconnected to ensure that all components are in normal condition for the next operation. This achieves coordinated adjustment of the left and right angles of the main swing arm and the bucket tilting. At the same time, the hydraulic system provides precise speed control, stable operation, and adaptability to complex working conditions, and is easy to operate.

[0029] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An angle-adjustable excavator boom bucket, comprising: The back panel (1) is characterized in that it further includes: Support plate one (7): There are two support plates one (7), and the two support plates one (7) are respectively horizontally fixedly installed at the top and bottom of one end of the back hanging plate (1); Main swing arm (8): The main swing arm (8) is disposed at one end of the back plate (1); Bucket (9): The bucket (9) is located at the other end of the main swing arm (8): Angle adjustment component one: The angle adjustment component one is located at the top of the main swing arm (8) at the end away from the back plate (1); Angle adjustment component two: The angle adjustment component two is installed on one end of the main swing arm (8) near the back plate (1); Support component: The support component is disposed on top of one of the support plates (7).

2. The angle-adjustable excavator boom bucket as described in claim 1, characterized in that, The angle adjustment assembly includes: mounting bracket one (301), mounting bracket two (302), and hydraulic cylinder one (303). One end of mounting bracket one (301) is fixedly installed on the outer wall of one end of the bucket (9), and the bottom of the other end of mounting bracket one (301) is hinged to the end of the main swing arm (8) away from the back plate (1). Mounting bracket two (302) is fixedly installed at the middle position of the top of the main swing arm (8). One end of hydraulic cylinder one (303) is hinged to mounting bracket two (302), and the other end of hydraulic cylinder one (303) is hinged to the top of the other end of mounting bracket one (301). The angle adjustment assembly 2 includes: two mounting plates (304), a connecting rod 1 (305), a connecting rod 2 (306), a hydraulic cylinder 2 (307), and a rotating shaft (308). The two mounting plates (304) are respectively horizontally fixedly installed at the top and bottom of the main swing arm (8) near one end of the back plate (1). The rotating shaft (308) is vertically rotatably installed between the bottom of one of the support plates 1 (7) and the top of the other support plate 1 (7). The bottom of the rotating shaft (308) passes through one of the mounting plates (304), the main swing arm (8), and the bottom of the other mounting plate (304) away from the back plate (1). At one end of the hanging plate (1), the connecting rod one (305) is vertically rotatably installed between the bottom of one of the support plates one (7) and the top side of the other support plate one (7). The connecting rod two (306) is vertically rotatably installed between the bottom of one of the mounting plates (304) and the top of the other mounting plate (304). The hydraulic cylinder two (307) is horizontally set. One end of the hydraulic cylinder two (307) is fixedly installed with the connecting rod one (305), and the other end of the hydraulic cylinder two (307) is fixedly installed with the connecting rod two (306). A hydraulic system is provided between the hydraulic cylinder one (303) and the hydraulic cylinder two (307).

3. The angle-adjustable excavator boom bucket as described in claim 2, characterized in that, The hydraulic system includes: a pressure oil port (201), a return oil port (202), a balance valve (203), a solenoid valve (204), two adjustable joints (205), two throttle valves (206), and several hydraulic lines (207). The pressure oil port (201) is used to connect to the pressure oil source of an external loader, and the return oil port (202) is used to connect to an external return oil circuit. The balance valve (203) is fixedly installed on the hydraulic line (207) near the pressure oil port (201). The oil inlet of the balance valve (203) is connected to the... The hydraulic line (207) is directly connected to the pressure oil interface (201). The return oil end of the balance valve (203) is directly connected to the return oil interface (202) through the hydraulic line (207). The solenoid valve (204) is provided with a main oil inlet, a main oil outlet, a first branch oil inlet, a first branch return oil outlet, a second branch oil inlet, and a second branch oil outlet. The main oil inlet of the solenoid valve (204) is connected to the outlet end of the balance valve (203) through the hydraulic line (207). The main return oil outlet of the solenoid valve (204) is connected to the outlet end of the balance valve (203) through the hydraulic line (207). The hydraulic line (207) is connected to the return end of the balance valve (203). The first hydraulic cylinder (303) is provided with a rodless chamber port (601) and a rod chamber port (602). The first branch inlet is connected to the rodless chamber port (601) through the hydraulic line (207). The first branch return port is connected to the rod chamber port (602) through the hydraulic line (207). The second hydraulic cylinder (307) is provided with a rodless chamber port (603) and a rod chamber port (604). One end of the two adjustable connectors (205) is connected to the return end of the balance valve (203). The two adjustable connectors (205) are fixedly connected to the two throttle valves (206) respectively. The other ends of the two throttle valves (206) are respectively connected to the rodless chamber oil port 2 (603) and the rod chamber oil port 2 (604) of the hydraulic cylinder 2 (307) through the hydraulic pipeline (207). The second branch oil inlet is correspondingly set to the rodless chamber oil port 2 (603), and the second branch oil outlet is correspondingly set to the rod chamber oil port 2 (604).

4. The angle-adjustable excavator boom bucket as described in claim 1, characterized in that, The support assembly includes: a plurality of triangular stabilizing plates (401) and two support plates (402). The plurality of triangular stabilizing plates (401) are arranged and installed on the top of the support plate (7) located above, and the two support plates (402) are respectively vertically fixed on both sides of the back plate (1).

5. The angle-adjustable excavator boom bucket as described in claim 1, characterized in that, The bottom of the main swing arm (8) is hinged to an auxiliary claw (501) at one end away from the back plate (1). The auxiliary claw (501) is serrated at one end near the bucket (9). A mounting bracket (502) is fixedly installed at one end of the main swing arm (8) away from the back plate (1). Several mounting holes are equidistantly opened on one side of the mounting bracket (502). A connecting plate (503) is hinged to the other end of the auxiliary claw (501). The end of the connecting plate (503) away from the auxiliary claw (501) is connected to the mounting bracket (502) through one of the mounting holes.

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