A leveling device and a leveling machine

Abstract

This utility model discloses a leveling device and a grader, belonging to the field of grader technology. It includes a front frame, with hydraulic cylinder fixing brackets extending to both sides connected to the middle section of the front frame. Each end of the hydraulic cylinder fixing bracket is connected to a lifting cylinder, the ends of which are hinged to the ends of a traction frame. The front end of the traction frame is hinged to the front end of the front frame. A grader blade is connected to the traction frame via a rotary mechanism. Based on the hydraulic cylinder fixing brackets extending to both sides connected to the middle section of the front frame, combined with the lifting cylinders at both ends, the lifting height of the traction frame can be precisely controlled, achieving millimeter-level precision in ground leveling. The traction frame, through a specific connection method, is connected to the grader blade via a rotary mechanism, allowing for flexible adaptation to complex terrain. Compared to traditional complex motion structures, this design lowers the operational threshold for customers and effectively avoids structural damage caused by improper operation.

Description

Technical Field

[0001] This utility model belongs to the field of grader technology, specifically a grader working device and grader. Background Technology

[0002] A grader is a type of engineering machinery widely used in civil engineering, road construction, mining and other fields. It is mainly used for fine leveling, scraping, backfilling and mixing of soil on the ground.

[0003] Graders, as efficient and multifunctional engineering machinery, are widely used in road construction, mining, agricultural land reclamation, and sports field construction. Their core advantage lies in their ability to achieve precise ground leveling, earthmoving, and backfilling operations through adjustable scrapers, rippers, and other hydraulic drive devices. Four-wheel drive and articulated steering design allow them to flexibly adapt to complex terrain, making them particularly adept at handling large-area fine leveling, such as highway subgrade leveling, airport runway repair, and farmland terrace construction. Compared to the rough leveling capabilities of bulldozers and the loading functions of loaders, graders can expand their application scenarios by changing attachments such as V-shovels and U-shovels. Furthermore, with the development of intelligent technology, they integrate autonomous driving technology, significantly improving construction efficiency and safety. In recent years, industry trends have focused on electrification and multifunctional integration. Some models have adopted low-emission or hybrid power systems, while combining crushing and compaction functions to reduce equipment switching costs, making them key equipment in modern engineering that balances efficiency and environmental protection.

[0004] Current graders all have blade tilting and side-standing functions, but their movement structure is complex, and many customers cannot operate them without professional training. Some customers force the operation, resulting in damage to the structure and related components of the working device. Damage to the working device is difficult to replace, has high replacement costs, and delays the on-site work cycle. Utility Model Content

[0005] To address the problem that existing graders, despite their numerous functions, are complex to operate and prone to structural damage if used without proper training, this invention provides a grader and a grader work device.

[0006] This utility model is achieved through the following technical solution:

[0007] A leveling work device includes a front frame, a cylinder fixing bracket extending to both sides connected to the middle section of the front frame, a lifting cylinder connected to each end of the cylinder fixing bracket, and the ends of the two lifting cylinders respectively hinged to the ends of a traction frame; the front end of the traction frame is hinged to the front end of the front frame; and a leveling blade is connected to the traction frame via a rotary mechanism.

[0008] Based on the hydraulic cylinder fixing brackets extending to both sides connected in the middle of the front frame, and with the lifting cylinders at both ends, the lifting height of the traction frame can be precisely controlled to achieve ground leveling operations with high precision requirements. In scenarios such as road construction and mining, it ensures that the ground flatness meets stringent standards. The traction frame is connected to the grader blade through a specific connection method, in conjunction with the slewing mechanism, which can flexibly adapt to complex terrain. Whether it is mountains, hills, or potholes, it can excellently complete the fine leveling work of large areas, such as the efficient leveling of highway subgrades and the precise repair of airport runways. Compared with traditional complex motion structures, it lowers the operating threshold for customers. Even without professional training, it can be operated relatively easily, effectively avoiding structural damage caused by improper operation, reducing the risk of damage to related components of the working device, reducing the difficulty and cost of replacement, and reducing the impact on the on-site work cycle. While improving construction efficiency, it also ensures the stable operation of the equipment, becoming a key leveling working device that balances efficiency and economy.

[0009] A further improvement of this invention is that the aforementioned lifting cylinder one is mounted on the cylinder fixing bracket via a movable joint. The lifting cylinder one is mounted on the cylinder fixing bracket via the movable joint, and the tilt adjustment of the traction frame is achieved through the asymmetrical extension and retraction of the two lifting cylinders one. The movable joint can withstand the torsional angle changes of the lifting cylinder one caused by the tilt of the traction frame; allowing the traction frame to drive the leveling blade to operate at the optimal angle. Compared with traditional fixed connections, this significantly enhances the equipment's adaptability to different working conditions and improves the accuracy and efficiency of ground leveling.

[0010] A further improvement of this utility model is that the aforementioned traction frame is an isosceles triangular structure. The apex of the traction frame is connected to the front frame via a ball joint hinge, and the two base corners are connected to the lifting cylinder via ball joint hinges. This isosceles triangular structure, with the apex connected to the front frame via a ball joint hinge and the base corners connected to the lifting cylinder via ball joint hinges, provides excellent stability and evenly distributes the force exerted by the shovel during operation, ensuring structural integrity under high-intensity work. It also allows for flexible adjustment of its posture in multiple dimensions according to actual ground conditions, enabling precise ground cutting and backfilling operations in conjunction with the shovel, greatly improving work quality.

[0011] A further improvement of this invention is that the back of the grader blade is provided with a guide rail, and a guide seat that connects to the rotary mechanism is slidably mounted on the guide rail. By providing a guide rail and a guide seat that connects to the rotary mechanism on the back of the grader blade, the connection between the grader blade and the rotary mechanism is more stable and has good sliding guiding performance.

[0012] A further improvement of this utility model is that a side-extension hydraulic cylinder is provided between the aforementioned rotary mechanism and the grader blade. One end of the side-extension hydraulic cylinder is hinged to the rotary mechanism, and the other end is hinged to the grader blade. The side-extension hydraulic cylinder between the rotary mechanism and the grader blade increases the horizontal movement adjustment function of the grader blade, allowing it to extend and retract more flexibly. The side-extension hydraulic cylinder enables the grader blade to better cover the work area during leveling and scraping operations, especially for edges and corners, improving the comprehensiveness and precision of the work. Simultaneously, the ease of operation reduces equipment damage caused by improper operation, lowers the cost and difficulty of replacing parts, ensures work continuity, and improves work efficiency.

[0013] A further improvement of this utility model is that the grader blade is hinged to the rotary mechanism; a traction bracket is provided at the end of the traction frame, and a blade angle adjustment cylinder is provided between the traction bracket and the grader blade; one end of the blade angle adjustment cylinder is hinged to the traction bracket, and the other end is hinged to the grader blade. Compared with the complex motion structure of existing graders, this design makes blade angle adjustment operation simpler, and operators can master it without complex professional training. At the same time, this structure enhances the grader's adaptability to different working scenarios and ground conditions. The blade angle can be precisely adjusted according to actual working needs through the blade angle adjustment cylinder, improving the accuracy and efficiency of ground leveling, earthmoving, and other operations. It can better handle different types of soil and ground.

[0014] A further improvement of this utility model is that support plates are respectively provided on both sides of the aforementioned rotary mechanism, and a support shaft passing through the rotary mechanism is connected between the two support plates; the two support plates are connected to the guide seat; a connecting seat is slidably fitted on the support shaft, and the connecting seat is hinged to the end of the shovel angle adjusting cylinder opposite to the traction bracket one through the second traction bracket. The guide seats on both sides of the rotary mechanism, and the cooperation of components such as the support shaft and the connecting seat, form a stable support and connection structure. This structure not only enhances the connection stability between the rotary mechanism and the grader blade, but also provides a reliable support point for the shovel angle adjusting cylinder. This structure is rationally designed, able to distribute the force during operation, and reduce the risk of component damage. The stable support and connection structure ensures the stability of the grader blade during operation, reduces operational errors caused by structural swaying or instability, and improves the accuracy of ground leveling operations.

[0015] A further improvement of this utility model is that the bottom middle section of the aforementioned hydraulic cylinder fixing bracket has a slot adapted to the front frame. This slot allows for precise positioning and installation, simplifies the equipment assembly process, and improves production efficiency. Because it increases the contact surface between the two components, the slot tightly engages with the front frame during equipment use, preventing displacement of the hydraulic cylinder fixing bracket during operation. This ensures the stability of the hydraulic cylinder's installation position, guarantees the accuracy and reliability of the traction frame's lifting height adjustment, and improves the stability and precision of the leveling device.

[0016] A further improvement of this invention is that the aforementioned slot and the front frame are welded together. This welded connection makes the cylinder mounting bracket and the front frame a solid whole, greatly enhancing the strength and rigidity of the connection. During high-intensity operation, it can effectively resist forces from all directions, preventing loosening of the connection and thus affecting equipment performance. The welded connection between the slot and the front frame forms a solid whole, enhancing the strength and rigidity of the connection; during high-intensity operation, it can effectively resist forces from all directions, preventing loosening of the connection and thus affecting equipment performance; compared with other connection methods, the welded connection significantly improves the durability and reliability of the equipment, reduces equipment failures and repairs caused by connection problems, lowers maintenance costs, and ensures long-term stable operation of the equipment.

[0017] A grader includes a vehicle body with a grading device connected to its front end. The front frame has a front mounting seat for mounting axles at its front end and a rear mounting seat connected to the vehicle body at its rear end. This design, with the front mounting seat for the axles at the front end and the rear mounting seat connected to the vehicle body at the rear end, is both stable and practical. The front mounting seat provides good support and guidance for the grading device, ensuring smooth movement during operation. The rear mounting seat connects to a power source, enabling the vehicle body to precisely drive the grading device, ensuring coordination and stability between the grader's movement and operation, and improving work efficiency and safety.

[0018] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: Based on the hydraulic cylinder fixing brackets extending to both sides connected in the middle section of the front frame, and combined with the lifting hydraulic cylinders at both ends, the lifting height of the traction frame can be precisely controlled to achieve the precision required for ground leveling operations. In scenarios such as road construction and mining, it ensures that the ground flatness meets stringent standards. The traction frame is connected to the leveling blade through a specific connection method, in conjunction with the slewing mechanism, which can flexibly adapt to complex terrain. Whether it is mountains, hills, or potholes, it can excellently complete the fine leveling work of large areas, such as the efficient leveling of highway subgrades and the precise repair of airport runways. Compared with traditional complex motion structures, it lowers the operating threshold for customers. Even without professional training, it can be operated relatively easily, effectively avoiding structural damage caused by improper operation, reducing the risk of damage to related components of the working device, reducing the difficulty and cost of replacement, and reducing the impact on the on-site work cycle. While improving construction efficiency, it ensures the stable operation of the equipment, becoming a key leveling working device that balances efficiency and economy. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 2 This is a second structural schematic diagram of a specific embodiment of the present utility model.

[0022] In the attached diagram: 1. Front frame; 11. Front mounting base; 12. Rear mounting base; 2. Hydraulic cylinder fixing bracket; 21. Slot; 3. Lifting cylinder one; 4. Movable joint; 5. Traction frame; 51. Traction bracket one; 52. Traction bracket two; 53. Shovel angle adjusting cylinder; 54. Support shaft; 55. Connecting seat; 56. Side discharge cylinder; 6. Rotation mechanism; 7. Leveling blade; 71. Support plate; 72. Guide rail; 73. Guide seat; 8. Ball joint one; 9. Ball joint two. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] like Figures 1-2 As shown, this utility model discloses a leveling work device, including a front frame 1. The front frame 1 has an overall upward-convex arched structure. A cylinder fixing bracket 2 extending to both sides is connected to the middle section of the front frame 1. The bottom middle section of the cylinder fixing bracket 2 has a slot 21 adapted to the front frame 1; the slot 21 is welded to the front frame 1. Lifting cylinders 3 are respectively connected to both ends of the cylinder fixing bracket 2. The lifting cylinders 3 are mounted on the cylinder fixing bracket 2 through movable joints 4.

[0025] The ends of the two lifting cylinders 3 are respectively hinged to the two ends of the traction frame 5; the two ends of the traction frame 5 are respectively connected to the lifting cylinders 3, and the front end of the traction frame 5 is hinged to the front end of the front frame 1; the traction frame 5 is connected to the leveling blade 7 through the rotary mechanism 6.

[0026] The traction frame 5 is in the shape of an isosceles triangle. The apex of the traction frame 5 is connected to the front frame 1 via a ball joint hinge 8, and the two base corners of the traction frame 5 are connected to the lifting cylinder 3 via ball joint hinges 9.

[0027] The back of the grader blade 7 is equipped with a guide rail 72, on which a guide seat 73, connected to the rotary mechanism 6, slides slidably. A side-extension hydraulic cylinder 56 is also provided between the rotary mechanism 6 and the grader blade 7. One end of the side-extension hydraulic cylinder 56 is hinged to the rotary mechanism 6, and the other end is hinged to the grader blade 7. The side-extension hydraulic cylinder 56 between the rotary mechanism 6 and the grader blade 7 increases the horizontal movement adjustment function of the grader blade 7, allowing it to extend and retract more flexibly. The side-extension hydraulic cylinder 56 enables the grader blade 7 to better cover the work area during leveling and scraping operations, especially for edges and corners, improving the comprehensiveness and precision of the work. Simultaneously, due to its ease of operation, it reduces equipment damage caused by improper operation, lowers the cost and difficulty of replacing parts, ensures work continuity, and improves work efficiency.

[0028] The grader blade 7 is hinged to the rotary mechanism 6; the end of the traction frame 5 is provided with a traction bracket 51, and a blade angle adjustment cylinder 53 is provided between the traction bracket 51 and the grader blade 7; one end of the blade angle adjustment cylinder 53 is hinged to the traction bracket 51, and the other end is hinged to the grader blade 7. Compared with the complex motion structure of existing graders, this design makes blade angle adjustment operation simpler, and operators can master it without complex professional training. At the same time, this structure enhances the adaptability of the grader to different working scenarios and ground conditions. The blade angle of the grader blade 7 can be precisely adjusted according to actual working needs through the blade angle adjustment cylinder 53, improving the accuracy and efficiency of ground leveling, earthmoving, and other operations. It can better handle different types of soil and ground.

[0029] The rotary mechanism 6 has support plates 71 on both sides, and a support shaft 54 ​​passing through the rotary mechanism 6 connects the two support plates 71. The two support plates 71 are connected to the guide seat 73. A connecting seat 55 is slidably fitted on the support shaft 54, and the connecting seat 55 is hinged to the end of the shovel angle adjusting cylinder 53 away from the traction bracket 51 via a second traction bracket 52. The guide seats 73 on both sides of the rotary mechanism 6, along with the cooperation of the support shaft 54 ​​and connecting seat 55, form a stable support and connection structure. This structure not only enhances the connection stability between the rotary mechanism 6 and the leveling blade 7, but also provides a reliable support point for the shovel angle adjusting cylinder 53. This structural design is reasonable, distributing the force during operation and reducing the risk of component damage. The stable support and connection structure ensures the stability of the leveling blade 7 during operation, reduces operational errors caused by structural swaying or instability, and improves the accuracy of ground leveling operations.

[0030] A grader includes a vehicle body with a grading device connected to its front end. The front frame 1 has a front mounting seat 11 for mounting axles at its front end and a rear mounting seat 12 connected to the vehicle body at its rear end. This design, with the front mounting seat 11 for mounting axles at the front end and the rear mounting seat 12 connected to the vehicle body at the rear end, is both stable and practical. The front mounting seat 11 provides good support and guidance for the grading device, ensuring smooth movement during operation. The rear mounting seat 12 connects to a power source, enabling the vehicle body to precisely drive the grading device, ensuring coordination and stability between the grader's movement and operation, and improving work efficiency and safety.

[0031] The rear mounting base 12 is also provided with a number of ear plates that are connected to the vehicle body in the middle; the rear mounting base 12 and the ear plates are perpendicular to the direction through which the pin shaft passes, thereby forming a number of connection points and improving the connection firmness.

[0032] In summary, the operating principle of this device is as follows: by adjusting the two lifting cylinders 3, the tilting angle of the leveling blade 7 in the vertical direction is achieved; the second lifting cylinder helps to control the penetration depth of the leveling blade 7; the slewing mechanism 6 can control the tilting direction of the leveling blade 7 in the horizontal plane, so as to pile the leveled soil to one side; during the above adjustment process, the movable joint 4 and the ball joint are hinged to achieve adaptive adjustment and avoid force interference of the parts during the movement.

[0033] This utility model discloses a leveling device and grader. Based on the hydraulic cylinder fixing brackets extending to both sides connected in the middle of the front frame, and with the lifting cylinders at both ends, the lifting height of the traction frame can be precisely controlled to achieve ground leveling operations with high precision requirements. In scenarios such as road construction and mining, it ensures that the ground flatness meets stringent standards. The traction frame is connected to the grader blade through a specific connection method, in conjunction with the slewing mechanism, which can flexibly adapt to complex terrain. Whether it is mountains, hills, or potholes, it can excellently complete the fine leveling work of large areas, such as the efficient leveling of highway subgrades and the precise repair of airport runways. Compared with traditional complex motion structures, it lowers the operating threshold for customers. Even without professional training, it can be operated relatively easily, effectively avoiding structural damage caused by improper operation, reducing the risk of damage to related components of the working device, reducing the difficulty and cost of replacement, and reducing the impact on the on-site work cycle. While improving construction efficiency, it ensures the stable operation of the equipment, becoming a key leveling working device that balances efficiency and economy.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grading device comprising a front frame (1), characterized in that The middle section of the front frame (1) is connected to a cylinder fixing bracket (2) extending to both sides. The two ends of the cylinder fixing bracket (2) are respectively connected to lifting cylinders (3). The ends of the two lifting cylinders (3) are respectively hinged to the ends of the traction frame (5). The front end of the traction frame (5) is hinged to the front end of the front frame (1). A leveling blade (7) is connected to the traction frame (5) through a rotary mechanism (6).

2. The leveling device according to claim 1, characterized in that, The lifting cylinder (3) is mounted on the cylinder fixing bracket (2) via a movable joint (4).

3. The leveling device according to claim 1, characterized in that, The traction frame (5) is an isosceles triangle structure. The top corner of the traction frame (5) is connected to the front frame (1) through ball joint one (8), and the two bottom corners of the traction frame (5) are connected to the lifting cylinder one (3) through ball joint two (9).

4. A leveling device according to claim 1, characterized in that, The back of the leveling blade (7) is provided with a guide rail (72), and a guide seat (73) connected to the rotary mechanism (6) is slidably provided on the guide rail (72).

5. A leveling device according to claim 4, characterized in that, A side-out hydraulic cylinder (56) is also provided between the rotary mechanism (6) and the leveling blade (7). One end of the side-out hydraulic cylinder (56) is hinged to the rotary mechanism (6), and the other end of the side-out hydraulic cylinder (56) is hinged to the leveling blade (7).

6. A leveling work device according to claim 5, characterized in that, The leveling blade (7) is hinged to the rotary mechanism (6); the end of the traction frame (5) is provided with a traction bracket (51), and a blade angle adjustment cylinder (53) is provided between the traction bracket (51) and the leveling blade (7); one end of the blade angle adjustment cylinder (53) is hinged to the traction bracket (51), and the other end of the blade angle adjustment cylinder (53) is hinged to the leveling blade (7).

7. A leveling device according to claim 6, characterized in that, The rotary mechanism (6) is provided with support plates (71) on both sides respectively, and a support shaft (54) that passes through the rotary mechanism (6) is connected between the two support plates (71); the two support plates (71) are connected to the guide seat (73); a connecting seat (55) is slidably fitted on the support shaft (54), and the connecting seat (55) is hinged to the end of the shovel angle adjusting cylinder (53) away from the traction bracket (51) through the second traction bracket (52).

8. A leveling device according to claim 1, characterized in that, The bottom middle section of the cylinder fixing bracket (2) is provided with a slot (21) that is compatible with the front frame (1).

9. A leveling device according to claim 8, characterized in that, The slot (21) is welded to the front frame (1).

10. A grader, comprising a vehicle body, characterized in that, The front end of the vehicle body is connected to a leveling work device as described in any one of claims 1 to 9; the front end of the front frame (1) is provided with a front mounting seat (11) for mounting wheel axles, and the rear end is provided with a rear mounting seat (12) connected to the vehicle body.

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