Angle adjustment device for a bulldozer blade

Abstract

This utility model relates to the field of angle adjustment devices, and discloses an angle adjustment device for a bulldozer blade. It includes a housing, a rotating shaft located at the rear of the housing, a friction plate fixedly connected to one end of the rotating shaft, a washer sleeved on the side of the rotating shaft, a disc spring between the front and rear washeres, a sleeve at the rear end of the rear washer, a rotating cylinder located in front of the friction plate, a fixed cylinder located in front of the rotating cylinder, a rotating rod located inside the rotating cylinder, a rotating ball fixedly connected to the front end of the rotating rod, a spherical shell sleeved on the outer side of the spherical shell, and a limit plate fixedly connected to the bottom of the spherical shell. This utility model utilizes components such as a motor and friction plate to achieve precise multi-angle adjustment of the blade, enhances reliability through a friction force threshold design, and adapts to different working conditions; it also utilizes components such as levers and locking blocks to achieve quick blade assembly and disassembly, making operation simple, connection stable, and effectively improving the bulldozer's operating efficiency and environmental adaptability.

Description

Technical Field

[0001] This utility model relates to the field of angle adjustment devices, and in particular to an angle adjustment device for a bulldozer blade. Background Technology

[0002] Bulldozers, as indispensable earthmoving equipment in the engineering construction field, are widely used in road construction, mining, site leveling, and other scenarios. The performance of its core working component, the blade, directly affects the project progress and construction quality. With the increasing complexity of engineering operation environments, higher requirements are placed on the flexibility, reliability, and adaptability of bulldozer blades.

[0003] Existing bulldozer blade angle adjustment mechanisms mostly employ rigid connections or simple mechanical linkages. When the blade encounters significant resistance during operation, the lack of overload protection mechanisms can easily lead to deformation or even breakage of internal transmission components, reducing the equipment's lifespan. Furthermore, traditional adjustment structures struggle to achieve precise multi-angle control of the blade, failing to meet the demands of complex terrain operations. Regarding blade assembly and disassembly, current technologies largely rely on bolt fastening or complex snap-fit ​​structures. Replacement requires specialized tools, making the process cumbersome and time-consuming, and hindering rapid adaptation to the changing blade types required for different operational scenarios. In addition, traditional assembly and disassembly structures suffer from poor connection stability, potentially leading to blade loosening or even detachment during high-intensity operations, severely impacting construction safety and operational efficiency. Therefore, there is an urgent need to design a bulldozer blade device that combines precise angle adjustment, overload protection, and rapid assembly and disassembly.

[0004] In response to this technical problem, this application proposes a bulldozer blade angle adjustment device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bulldozer blade angle adjustment device. This device utilizes components such as a motor and friction plates to achieve precise multi-angle adjustment of the blade. It enhances reliability through a friction force threshold design and adapts to different working conditions. With the help of components such as levers and locking blocks, the blade can be quickly assembled and disassembled. The device is easy to operate, has a stable connection, and effectively improves the operating efficiency and environmental adaptability of bulldozers.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A bulldozer blade angle adjustment device includes a housing, a rotating shaft located at the rear of the housing, a friction plate fixedly connected to one end of the rotating shaft, a washer sleeved on the side of the rotating shaft, a disc spring located between the front and rear washer, a sleeve located at the rear end of the rear washer, a rotating cylinder located at the front of the friction plate, a fixed cylinder located at the front of the rotating cylinder, a rotating rod located inside the rotating cylinder, a rotating ball fixedly connected to the front end of the rotating rod, a spherical shell sleeved on the outer side of the rotating ball, a limiting plate fixedly connected to the bottom of the spherical shell, a locking block located at one bottom end of one side of the limiting plate, a lever fixedly connected to one end of the locking block, a sliding rod fixedly connected to the side of the locking block, a limiting block fixedly connected to the other end of the sliding rod, and a spring located at the other end of the limiting block.

[0008] Furthermore, the inner wall of the sleeve is fitted onto the side of the rotating shaft, and the inner wall of the disc spring is fitted onto the side of the rotating shaft.

[0009] Furthermore, the front side of the gasket is fixedly connected to the rear side of the friction plate, the rear side of the sleeve is fixedly connected to the rear side of the inner wall of the box, the front side of the fixing cylinder is fixedly connected to the front side of the inner wall of the box, and the inner wall of the fixing cylinder is sleeved on the side of the rotating rod.

[0010] Furthermore, a connecting cylinder is rotatably connected to the bottom of the spherical shell, a slot is provided on the side of the connecting cylinder, and the outer wall of the limiting plate is disposed on the inner wall of the connecting cylinder.

[0011] Furthermore, the side of the card block is disposed inside the card slot, and the outer wall of the slide rod is disposed inside the card slot.

[0012] Furthermore, the inner wall of the pusher block is disposed on the outer wall of the connecting cylinder, one end of the locking block is disposed inside the connecting cylinder, and the outer wall of the limiting block is disposed inside the outer wall of the connecting cylinder.

[0013] Furthermore, a shovel is fixedly connected to the bottom of the connecting cylinder.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the shovel blade can be precisely adjusted in multiple directions by the coordinated use of components such as motor, rotating shaft, friction plate, rotating cylinder, and rotating rod. When the blade adjustment encounters resistance, the friction force threshold design between the friction plate and the rotating cylinder effectively avoids internal structural deformation and damage due to overload, thus improving the reliability of the device. The disc spring, shim, and sleeve work together to flexibly adjust the friction plate pressure, thereby precisely controlling the maximum friction force and making the equipment adaptable to different working conditions.

[0016] 2. In this utility model, the blade can be quickly installed and disassembled through the cooperation of components such as a lever, a locking block, and a spring. Disassembly and installation can be completed simply by rotating the lever, making operation convenient and efficient; it supports quick replacement of different types of blades, flexibly adapting to diverse operating environments; at the same time, the connection is firm after installation, effectively improving the ease of use and operational reliability of the bulldozer. Attached Figure Description

[0017] Figure 1 This is a perspective view of a bulldozer blade angle adjustment device proposed in this utility model;

[0018] Figure 2 This is an exploded view of the rotating cylinder of a bulldozer blade angle adjustment device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the connecting cylinder of the bulldozer blade angle adjustment device proposed in this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the connecting cylinder of a bulldozer blade angle adjustment device proposed in this utility model.

[0021] Legend:

[0022] 1. Housing; 2. Shaft; 3. Friction plate; 4. Disc spring; 5. Shim; 6. Sleeve; 7. Rotating cylinder; 8. Fixed cylinder; 9. Rotating rod; 10. Rotating ball; 11. Ball shell; 12. Limiting plate; 13. Locking block; 14. Pushing block; 15. Connecting cylinder; 16. Slot; 17. Limiting block; 18. Sliding rod; 19. Spring; 20. Shovel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 and Figure 2An embodiment of this utility model provides a bulldozer blade angle adjustment device, comprising a housing 1, a rotating shaft 2 disposed on the rear side of the housing 1, a friction plate 3 fixedly connected to one end of the rotating shaft 2, a gasket 5 sleeved on the side of the rotating shaft 2, a disc spring 4 disposed between the front and rear gaskets 5, a sleeve 6 disposed at the rear end of the rear gasket 5, a rotating cylinder 7 disposed on the front side of the friction plate 3, a fixed cylinder 8 disposed on the front side of the rotating cylinder 7, a rotating rod 9 disposed inside the rotating cylinder 7, a rotating ball 10 fixedly connected to the front end of the rotating rod 9, a ball shell 11 sleeved on the outer side of the rotating ball 10, a limiting plate 12 fixedly connected to the bottom of the ball shell 11, a locking block 13 disposed on one bottom end of the limiting plate 12, a lever 14 fixedly connected to one end of the locking block 13, a sliding rod 18 fixedly connected to the side of the locking block 13, a limiting block 17 fixedly connected to the other end of the sliding rod 18, and a spring 19 disposed at the other end of the limiting block 17.

[0025] Specifically, when the angle of the blade 20 needs to be adjusted, the motor drives the rotating shaft 2 to rotate, which in turn drives the friction plate 3 to rotate. The friction plate 3 drives the rotating cylinder 7 to rotate. The rotating cylinder 7 and the fixed cylinder 8 are threaded inside, and their threads correspond to the threads on the bottom side of the rotating rod 9. When the rotating cylinder 7 rotates, since the fixed cylinder 8 is fixedly connected to the housing 1, the rotating rod 9 will rotate outward along the threads, which will cause the rotating ball 10, which is fixedly connected to one end of the rotating rod 9, to rotate forward. The rotating ball 10 rotates inside the ball shell 11 and pushes the connecting cylinder 15 forward, which in turn drives the blade 20 to move forward. Correspondingly, when the motor rotates in the opposite direction, this structure will drive the blade 20 to move backward. There are four such structures on the rear side of the blade 20. The multi-directional angle adjustment of the blade 20 can be achieved by the mutual extension and retraction movement between the four structures. When the blade 20 is at an angle, if the blade 20 encounters resistance in front of it or the blade 20 is already aligned with the angle of the object to be scraped and cannot be adjusted further, the blade 20 will stop moving forward. This will prevent the rotating rod 9 from moving forward by rotation, and the rotating cylinder 7 will continue to rotate due to the friction plate 3. When the force applied by the motor-driven shaft 2 is greater than the friction between the friction plate 3 and the rotating cylinder 7, the shaft 2 and the friction plate 3 will spin freely under the drive of the motor, causing the rotating rod 9 to stop moving forward. This avoids deformation and damage to the internal structure due to greater resistance. The friction plate 3 has high strength. The disc spring 4 and the washer 5 provide the friction pressure required for the friction of the friction plate 3 to the sleeve 6. Therefore, the maximum friction between the friction plate 3 and the rotating cylinder 7 can be flexibly adjusted by adjusting the arrangement of the disc spring 4 and the preload applied to the disc spring 4 in advance, adapting to various working environments.

[0026] Reference Figure 3 and Figure 4The inner wall of sleeve 6 is fitted onto the side of rotating shaft 2, and the inner wall of disc spring 4 is fitted onto the side of rotating shaft 2. The front side gasket 5 is fixedly connected to the rear side of friction plate 3, the rear side of sleeve 6 is fixedly connected to the rear side of inner wall of housing 1, the front side of fixed cylinder 8 is fixedly connected to the front side of inner wall of housing 1, and the inner wall of fixed cylinder 8 is fitted onto the side of rotating rod 9. A connecting cylinder 15 is rotatably connected to the bottom of spherical shell 11. A slot 16 is opened on the side of connecting cylinder 15, and the outer wall of limiting plate 12 is set on the inner wall of connecting cylinder 15. A locking block 13 is set inside the slot 16, and the outer wall of sliding rod 18 is set inside the slot 16. The inner wall of push block 14 is set on the outer wall of connecting cylinder 15, one end of locking block 13 is set inside connecting cylinder 15, and the outer wall of limiting block 17 is set inside the outer wall of connecting cylinder 15. A scraper 20 is fixedly connected to the bottom of connecting cylinder 15.

[0027] Specifically, when the bulldozer needs to operate in different working environments, the blade 20 needs to be replaced. When replacing the blade 20, the lever 14 is rotated along the circumference of the connecting cylinder 15, causing the lever 14 to drive the locking block 13 to move along the locking groove 16. As a result, the sliding rod 18 moves along the circumference inside the locking groove 16, and then the sliding rod 18 drives the limiting block 17 to move accordingly and compress the spring 19 set at one end of the limiting block 17. This causes one end of the locking block 13 to disengage from the slot reserved on the limiting plate 12, releasing the limiting plate 12 from constraint. The rotating shaft 2 causes the ball shell 11 to rotate to both sides, thereby releasing the ball 10 from the constraint imposed by the ball shell 11, achieving quick disassembly of the blade 20. Correspondingly, when it is necessary to install the blade 20, the lever 14 is rotated, causing the lever 14 to drive the locking block 13 to rotate. When the ball reaches the corresponding position, the sliding rod 18 drives the limiting block 17 to compress the spring 19, placing the rotating ball 10 into the ball shell 11. The ball shell 11 closes under the action of the rotating ball 10 and the rotating shaft 2, causing the outer wall of the limiting plate 12 to rotate until it reaches the position of the inner wall of the connecting cylinder 15. The release block 14 causes the spring 19 to rebound, driving the limiting block 17, sliding rod 18, and locking block 13 to rotate to the initial position, so that the locking block 13 is locked into the reserved groove at the bottom side of the limiting plate 12, completing the displacement fixation of the limiting plate 12. This prevents the ball shell 11 from rotating through the rotating shaft 2, thus constraining the rotating ball 10 and completing the quick installation of the blade 20. This enables the quick installation and removal of the blade 20, facilitating the selection of different blades 20 for operation in different working environments, greatly improving the convenience of using the bulldozer.

[0028] Working principle: When the angle of the blade 20 needs to be adjusted, the motor drives the rotating shaft 2 to rotate, which in turn drives the friction plate 3 and the rotating cylinder 7 to rotate in sequence. Since the internal threads of the rotating cylinder 7 and the fixed cylinder 8 correspond to the threads on the side bottom of the rotating rod 9, and the fixed cylinder 8 is fixedly connected to the housing 1, the rotation of the rotating cylinder 7 will cause the rotating rod 9 to rotate outward along the threads, which will drive the rotating ball 10 fixedly connected at one end to rotate forward. The rotating ball 10 rotates in the ball shell 11 and pushes the connecting cylinder 15, causing the blade 20 to move forward. When the motor rotates in the opposite direction, it will drive the blade 20 to move backward. The four structures on the rear side of the blade 20 extend and retract with each other, realizing multi-directional angle adjustment. During the adjustment process, if the blade 20 encounters resistance or the angle cannot be adjusted further, the rotating rod 9 stops moving forward. When the force applied by the motor-driven shaft 2 is greater than the friction between the friction plate 3 and the rotating cylinder 7, the shaft 2 and the friction plate 3 rotate freely to avoid deformation and damage to the internal structure due to resistance. At the same time, the disc spring 4 and the washer 5 work together with the sleeve 6 to provide pressure to the friction plate 3. By adjusting the arrangement and preload of the disc spring 4, the maximum friction between the friction plate 3 and the rotating cylinder 7 can be flexibly adjusted to adapt to different working environments. When the bulldozer needs to change the blade 20 for different operating environments, the lever 14 is rotated around the circumference of the connecting cylinder 15, causing the locking block 13 and the sliding rod 18 to move within the slot 16. This compresses the spring 19 of the limiting block 17, disengaging the locking block 13 from the slot of the limiting plate 12. The constraint of the limiting plate 12 is released, and the ball shell 11 rotates to both sides via the rotating shaft 2, releasing the constraint of the rotating ball 10, thus enabling quick disassembly of the blade 20. During installation, the lever 14 is rotated to compress the spring 19, and the rotating ball 10 is placed into the ball shell 11. The ball shell 11 closes, causing the limiting plate 12 to rotate to the position of the inner wall of the connecting cylinder 15. The lever 14 is released, causing the spring 19 to rebound, and the locking block 13 engages with the reserved slot of the limiting plate 12, fixing the limiting plate 12 and constraining the ball shell 11 and the rotating ball 10, thus completing the quick installation of the blade 20. This facilitates the selection of the appropriate blade 20 for different operating scenarios and improves the ease of use of the bulldozer.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bulldozer blade angle adjustment device, comprising a housing (1), characterized in that: A rotating shaft (2) is provided on the rear side of the housing (1). A friction plate (3) is fixedly connected to one end of the rotating shaft (2). A gasket (5) is sleeved on the side of the rotating shaft (2). A disc spring (4) is provided between the gaskets (5) on both the front and rear sides. A sleeve (6) is provided at the rear end of the rear gasket (5). A rotating cylinder (7) is provided on the front side of the friction plate (3). A fixed cylinder (8) is provided on the front side of the rotating cylinder (7). A rotating rod (9) is provided inside the rotating cylinder (7). The rotating rod (9) is positioned at the front... A rotating ball (10) is fixedly connected to the end of the rotating ball (10). A ball shell (11) is sleeved on the outside of the ball shell (11). A limiting plate (12) is fixedly connected to the bottom of the ball shell (11). A locking block (13) is provided at the bottom of one side of the limiting plate (12). A lever (14) is fixedly connected to one end of the locking block (13). A sliding rod (18) is fixedly connected to the side of the locking block (13). A limiting block (17) is fixedly connected to the other end of the sliding rod (18). A spring (19) is provided at the other end of the limiting block (17).

2. The bulldozer blade angle adjustment device according to claim 1, characterized in that: The inner wall of the sleeve (6) is fitted on the side of the rotating shaft (2), and the inner wall of the disc spring (4) is fitted on the side of the rotating shaft (2).

3. The bulldozer blade angle adjustment device according to claim 1, characterized in that: The front side of the gasket (5) is fixedly connected to the rear side of the friction plate (3), the rear side of the sleeve (6) is fixedly connected to the rear side of the inner wall of the box (1), the front side of the fixing cylinder (8) is fixedly connected to the front side of the inner wall of the box (1), and the inner wall of the fixing cylinder (8) is sleeved on the side of the rotating rod (9).

4. The angle adjustment device for a bulldozer blade according to claim 1, characterized in that: The bottom of the spherical shell (11) is rotatably connected to a connecting cylinder (15), and a slot (16) is provided on the side of the connecting cylinder (15). The outer wall of the limiting plate (12) is set on the inner wall of the connecting cylinder (15).

5. The angle adjustment device for a bulldozer blade according to claim 1, characterized in that: The side of the card block (13) is set inside the card slot (16), and the outer wall of the slide rod (18) is set inside the card slot (16).

6. The angle adjustment device for a bulldozer blade according to claim 5, characterized in that: The inner wall of the push block (14) is disposed on the outer wall of the connecting cylinder (15), one end of the locking block (13) is disposed inside the connecting cylinder (15), and the outer wall of the limiting block (17) is disposed inside the outer wall of the connecting cylinder (15).

7. The bulldozer blade angle adjustment device according to claim 4, characterized in that: A shovel (20) is fixedly connected to the bottom of the connecting cylinder (15).

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