Heavy-duty tractor arm device

Abstract

The utility model relates to the technical field of tractor, and disclose a heavy tractor supporting arm device, including the main beam, the main beam is L type roof beam, the front end of roof beam rotatably connected with the front support seat, the vertical roof beam bottom rotatably connected with the main supporting arm of main beam, the inside telescopic connection of main supporting arm has telescopic supporting arm, the rear end of telescopic supporting arm rotatably connected with the bracket, the outside fixed connection of main beam has the reinforcing cover, the top fixed connection of main beam has a plurality of first connecting frame, the reinforcing cover includes two first reinforcing plates, two first reinforcing plates are fixedly connected with the left and right sides of main beam respectively. This heavy tractor supporting arm device has the advantages of large bearing capacity and adjustable dragging angle, solves the problem that the existing heavy tractor can only drag fifty tons of heavy vehicles due to the limited bearing capacity of its supporting arm device, and cannot drag two hundred tons of heavy mining truck.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically a heavy-duty tractor arm device. Background Technology

[0002] Mining trucks are key equipment for rock and soil stripping and ore transportation in open-pit mines, featuring large tonnage load capacity and high-intensity transportation characteristics.

[0003] Heavy mining trucks inevitably experience malfunctions in complex working environments. When they encounter situations such as tire blowouts or engine stalls that prevent them from moving, a tractor is needed to tow them for rescue. However, existing heavy-duty tractors often have limited load-bearing capacity due to the limited capacity of their boom devices, and can only tow heavy vehicles weighing up to 50 tons. They cannot tow heavy mining trucks weighing up to 200 tons. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a heavy-duty tractor arm device with advantages such as large load-bearing capacity and adjustable towing angle. It solves the problem that existing heavy-duty tractors, due to the limited load-bearing capacity of their arm devices, can often only tow heavy vehicles weighing up to 50 tons, and cannot tow heavy mining trucks weighing up to 200 tons.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A heavy-duty tractor arm device includes a main beam, the main beam being an L-shaped beam, a front support seat being rotatably connected to the front end of the crossbeam of the main beam, a main support arm being rotatably connected to the bottom of the vertical beam of the main beam, a telescopic support arm being telescopically connected inside the main support arm, a bracket being rotatably connected to the rear end of the telescopic support arm, a reinforcing cover being fixedly connected to the outside of the main beam, and a plurality of first connecting frames being fixedly connected to the top of the main beam;

[0006] The reinforcing cover includes two first reinforcing plates, which are fixedly connected to the left and right sides of the main beam respectively. A second reinforcing plate, which is fixedly connected to the bottom of the main beam, is fixedly connected between the two first reinforcing plates. A third reinforcing plate is fixedly connected to the top of the first connecting frame, and the two sides of the third reinforcing plate are fixedly connected to the two first reinforcing plates respectively.

[0007] The beneficial effects of this utility model are:

[0008] This heavy-duty tractor boom device significantly improves the overall rigidity and bending strength of the main beam through the multi-layered plate structure of the reinforcing cover and the first connecting frame. The reinforcing cover covers the key areas of the main beam, providing distributed support and effectively dispersing load stress, increasing the device's load-bearing capacity from fifty tons to over two hundred tons, making it suitable for towing heavy mining trucks; at the same time, the first connecting frame further reinforces the top to prevent plastic deformation under high loads.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the top of the main beam is fixedly connected with several first connecting frames, and the main beam is fixedly connected to the third reinforcing plate through several first connecting frames. The interior of each of the several first connecting frames is fixedly connected to a first horizontal axis. The two ends of the first horizontal axis pass through two first reinforcing plates and are rotatably connected to two luffing cylinders. The bottom of each of the two luffing cylinders is hinged to the rear support seat.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, through the linkage design of the first connecting frame and the first horizontal axis, combined with the luffing cylinder, the hydraulic adjustment of the main beam angle is realized. During operation, the pitch angle of the boom can be dynamically adjusted to adapt to different slope terrains and improve the towing flexibility; the rear support provides a stable fulcrum, reduces device sway, and ensures safe operation under a 200-ton load.

[0012] Furthermore, a folding arm hydraulic cylinder is fixedly connected inside the vertical beam of the main beam, and the output end of the folding arm hydraulic cylinder is driven by the main support arm.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the folding arm cylinder directly drives the main support arm to realize the folding and unfolding of the main support arm, which further improves the stability during the towing process, ensures that the main support arm operates stably under heavy load, avoids jamming, and improves the reliability of the device.

[0014] Furthermore, a telescopic hydraulic cylinder is fixedly connected inside the main support arm, and the output end of the telescopic hydraulic cylinder is driven by the telescopic support arm.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the telescopic cylinder is built into the main support arm, directly driving the telescopic movement of the support arm. This makes the support arm length adjustable to adapt to different sizes of mining trucks; it achieves smooth, stepless adjustment, reduces mechanical wear, and maintains high-precision positioning under a 200-ton load.

[0016] Furthermore, a U-shaped beam is fixedly connected to the front end of the main beam's crossbeam, the bottom of the U-shaped beam is hinged to the front support seat, and several reinforcing ribs are fixedly connected to both the left and right sides of the main beam, with the bottom of each reinforcing rib fixedly connected to the U-shaped beam.

[0017] The beneficial effects of adopting the above-mentioned further solution are that the U-shaped beam and the reinforcing ribs constitute a reinforced front-end support system. The U-shaped beam disperses the stress at the front end of the crossbeam, while the reinforcing ribs provide triangular reinforcement to prevent deformation or breakage under high loads; it also improves the torsional strength of the front of the device, ensures the stability of the front support seat when encountering rough terrain, and reduces the risk of structural failure during rescue operations.

[0018] Furthermore, protective steel plates are fixedly connected to the bottom of both the front support and the rear support.

[0019] The beneficial effects of adopting the above-mentioned further solution are that the protective steel plate covering the bottom of the support provides additional wear-resistant and impact-resistant protection, extends the life of the support, and reduces maintenance needs; at the same time, the steel plate disperses the ground reaction force, maintains the balance of the device, and avoids damage to the support point during the dragging of a 200-ton load.

[0020] Furthermore, a number of second connecting frames are fixedly connected to the top of the main support arm, and the interior of each of the second connecting frames is fixedly connected to a second horizontal shaft. The two ends of the second horizontal shaft are respectively rotatably connected to the left and right side walls of the main beam.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the second connecting frame and the second horizontal shaft form the rotational pivot between the main support arm and the main beam. This design ensures smooth rotation and reduces frictional losses; under high loads, the horizontal shaft provides uniform force distribution, prevents the main support arm from tilting, and improves the overall rigidity and durability of the device.

[0022] Furthermore, connecting guard plates are fixedly connected to both sides of the main support arm, and the two ends of the second horizontal shaft are rotatably connected to the two connecting guard plates respectively.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the connecting guard plate covers the second horizontal shaft connection point, providing sealed protection. In the dusty environment of a mine, the guard plate prevents foreign objects from entering the rotating parts, reducing the failure rate; at the same time, it enhances local strength, ensures the stability of the main support arm during extension and folding movements, and extends the service life of critical components. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a bottom view of the structure of this utility model;

[0027] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0028] In the diagram: 1. Main beam; 2. Front support seat; 3. Main support arm; 4. Telescopic support arm; 41. Bracket; 5. Reinforcing cover; 51. First reinforcing plate; 52. Second reinforcing plate; 53. Third reinforcing plate; 6. First connecting frame; 7. First horizontal shaft; 8. Luffing cylinder; 9. Rear support seat; 10. Folding arm cylinder; 11. Telescopic cylinder; 12. U-beam; 13. Reinforcing rib; 14. Protective steel plate; 15. Second connecting frame; 16. Second horizontal shaft; 17. Connecting guard plate. Detailed Implementation

[0029] 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.

[0030] Example 1, by Figure 1-4 This invention discloses a heavy-duty tractor arm device. The device includes a main beam 1, which is an L-shaped beam. A front support seat 2 is rotatably connected to the front end of the crossbeam of the main beam 1. A protective steel plate 14 is fixedly connected to the bottom of the front support seat 2. The bottom of the protective steel plate 14 is fixedly connected to the tractor body. The protective steel plate 14 covers the bottom of the support seat, providing additional wear-resistant and impact-resistant protection, extending the life of the support seat, and reducing maintenance requirements. Simultaneously, the steel plate disperses ground reaction forces, maintaining the balance of the device and preventing damage to the support points during 200-ton load towing. A U-shaped beam 12 is fixedly connected to the front end of the crossbeam of the main beam 1. The bottom of the U-shaped beam 12 is hinged to the front support seat 2. Several reinforcing ribs 13 are fixedly connected to both sides of the main beam 1. The bottoms of the reinforcing ribs 13 are all fixedly connected to the U-shaped beam 12. The U-shaped beam 12 and the reinforcing ribs 13 constitute a reinforced front-end support system. The U-shaped beam 12 disperses the stress at the front end of the crossbeam, while the reinforcing rib 13 provides triangular reinforcement to prevent deformation or breakage under high loads; it also improves the torsional strength of the front of the device, ensuring the stability of the front support 2 when encountering rough terrain and reducing the risk of structural failure during rescue operations. The bottom of the vertical beam of the main beam 1 is rotatably connected to the main support arm 3, and the top of the main support arm 3 is fixedly connected to several second connecting frames 15. The interior of each of the second connecting frames 15 is fixedly connected to a second horizontal shaft 16. The two ends of the second horizontal shaft 16 are rotatably connected to the left and right side walls of the main beam 1, respectively. The second connecting frames 15 and the second horizontal shaft 16 form the rotational hub between the main support arm and the main beam. This design ensures smooth rotation and reduces frictional loss; under high loads, the horizontal shaft provides uniform force distribution, preventing the main support arm from tilting and improving the overall rigidity and durability of the device. Connecting guard plates 17 are fixedly connected to both sides of the main support arm 3. The two ends of the second horizontal shaft 16 are rotatably connected to two connecting guard plates 17, which wrap around the connection points of the second horizontal shaft 16, providing sealing protection. In the dusty environment of a mine, the connecting guard plate 17 prevents foreign objects from entering the rotating parts, reducing the failure rate; at the same time, it enhances local strength, ensures the stability of the main support arm 3 during telescopic and folding movements, and extends the service life of key components. The main support arm 3 is internally telescopically connected to a telescopic support arm 4, the rear end of the telescopic support arm 4 is rotatably connected to a bracket 41, the main beam 1 is externally fixedly connected to a reinforcing cover 5, and the top of the main beam 1 is fixedly connected to several first connecting frames 6;

[0031] The reinforcing cover 5 includes two first reinforcing plates 51, which are fixedly connected to the left and right sides of the main beam 1, respectively. A second reinforcing plate 52, which is fixedly connected to the bottom of the main beam 1, is fixedly connected between the two first reinforcing plates 51. A third reinforcing plate 53 is fixedly connected to the top of the first connecting frame 6, and its two sides are fixedly connected to the two first reinforcing plates 51, respectively. Through the multi-layer plate structure of the reinforcing cover 5 and the first connecting frame 6, the overall rigidity and bending strength of the main beam 1 are significantly improved. The reinforcing cover 5 covers the key areas of the main beam 1, providing distributed support and effectively dispersing load stress, thereby increasing the load-bearing capacity of the device from 50 tons to over 200 tons, making it suitable for heavy-duty mining truck towing. At the same time, the first connecting frame 6 further reinforces the top to prevent plastic deformation under high loads.

[0032] In Example 2, based on Example 1, several first connecting frames 6 are fixedly connected to the top of the main beam 1. The main beam 1 is fixedly connected to the third reinforcing plate 53 through the several first connecting frames 6. The interior of each of the first connecting frames 6 is fixedly connected to the first horizontal shaft 7. The two ends of the first horizontal shaft 7 pass through two first reinforcing plates 51 and are rotatably connected to two luffing cylinders 8. The bottom of each of the two luffing cylinders 8 is hinged to the rear support seat 9. The bottom of the rear support seat 9 is fixedly connected to a protective steel plate 14, and the bottom of the protective steel plate 14 is fixedly connected to the tractor body. Through the linkage design of the first connecting frames 6 and the first horizontal shaft 7, combined with the luffing cylinders 8, the hydraulic adjustment of the angle of the main beam 1 is realized. During operation, the pitch angle of the boom can be dynamically adjusted to adapt to different slope terrains and improve the towing flexibility; the rear support seat 9 provides a stable fulcrum, reduces device sway, and ensures safe operation under a 200-ton load. A folding arm cylinder 10 is fixedly connected inside the vertical beam of the main beam 1, and the output end of the folding arm cylinder 10 is drivenly connected to the main support arm 3. The folding arm cylinder 10 directly drives the main support arm 3, enabling its folding and unfolding. This further enhances stability during towing, ensuring stable operation of the main support arm 3 under heavy loads, preventing jamming, and improving device reliability. A telescopic cylinder 11 is fixedly connected internally to the main support arm 3, with its output connected to the telescopic support arm 4. The telescopic cylinder 11, built into the main support arm 3, directly drives the telescopic movement of the telescopic support arm 4. This makes the arm length adjustable, allowing for flexible control of the bracket 41's position to adapt to different sized mining trucks; it achieves smooth, stepless adjustment, reduces mechanical wear, and maintains high-precision positioning under a 200-ton load.

[0033] Working principle:

[0034] Implementation steps for innovation:

[0035] Step 1: Move the tow truck to the front of the vehicle to be rescued;

[0036] Step 2: The telescopic cylinder 11 extends, allowing the telescopic support arm 4 to extend under the vehicle to be rescued;

[0037] Step 3: The luffing cylinder 8 extends and lifts the vehicle to be rescued via the bracket 41;

[0038] Step 4: The articulated arm cylinder 10 extends, and the angle between the bracket 41 and the load-bearing beam of the vehicle to be rescued is adjusted by lever principle;

[0039] Step 5: The tow truck moves to help the vehicle being rescued get out of trouble.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty tractor arm device, comprising a main beam (1), wherein the main beam is an L-shaped beam, characterized in that: The front end of the crossbeam of the main beam (1) is rotatably connected to a front support seat (2), the bottom of the vertical beam of the main beam (1) is rotatably connected to a main support arm (3), the inside of the main support arm (3) is telescopically connected to a telescopic support arm (4), the rear end of the telescopic support arm (4) is rotatably connected to a bracket (41), the outside of the main beam (1) is fixedly connected to a reinforcing cover (5), and the top of the main beam (1) is fixedly connected to several first connecting frames (6). The reinforcing cover (5) includes two first reinforcing plates (51), which are fixedly connected to the left and right sides of the main beam (1) respectively. A second reinforcing plate (52) fixedly connected to the bottom of the main beam (1) is fixedly connected between the two first reinforcing plates (51). A third reinforcing plate (53) is fixedly connected to the top of the first connecting frame (6). The two sides of the third reinforcing plate (53) are fixedly connected to the two first reinforcing plates (51) respectively.

2. The heavy-duty tractor arm device according to claim 1, characterized in that: The top of the main beam (1) is fixedly connected with several first connecting frames (6). The main beam (1) is fixedly connected to the third reinforcing plate (53) through several first connecting frames (6). The interior of several first connecting frames (6) is fixedly connected to the first horizontal shaft (7). The two ends of the first horizontal shaft (7) pass through two first reinforcing plates (51) respectively and are rotatably connected to two luffing cylinders (8). The bottom of the two luffing cylinders (8) is hinged to the rear support seat (9).

3. The heavy-duty tractor arm device according to claim 1, characterized in that: The main beam (1) has a folding arm cylinder (10) fixedly connected inside the vertical beam, and the output end of the folding arm cylinder (10) is driven to the main support arm (3).

4. A heavy-duty tractor arm device according to claim 3, characterized in that: The main support arm (3) is internally fixedly connected to a telescopic cylinder (11), and the output end of the telescopic cylinder (11) is drivenly connected to the telescopic support arm (4).

5. A heavy-duty tractor arm device according to claim 1, characterized in that: The front end of the main beam (1) is fixedly connected to a U-shaped beam (12), the bottom of the U-shaped beam (12) is hinged to the front support seat (2), and several reinforcing ribs (13) are fixedly connected to both the left and right sides of the main beam (1), and the bottom of the several reinforcing ribs is fixedly connected to the U-shaped beam (12).

6. A heavy-duty tractor arm device according to claim 2, characterized in that: The bottom of both the front support (2) and the rear support (9) are fixedly connected with protective steel plates (14).

7. A heavy-duty tractor arm device according to claim 1, characterized in that: The top of the main support arm (3) is fixedly connected to several second connecting frames (15), and the interior of each of the several second connecting frames (15) is fixedly connected to a second horizontal shaft (16). The two ends of the second horizontal shaft (16) are respectively rotatably connected to the left and right side walls of the main beam (1).

8. A heavy-duty tractor arm device according to claim 7, characterized in that: The main support arm (3) is fixedly connected to the left and right sides with connecting guard plates (17), and the two ends of the second horizontal shaft (16) are rotatably connected to the two connecting guard plates (17) respectively.

Images