Protective device for central front connecting shaft of loading machine

Abstract

The utility model discloses a protective device for a central front connecting shaft of a loading machine, which belongs to the technical field of connecting shaft protection and comprises two protective covers, a connecting cover and a placing groove. A containing groove matched with a front connecting shaft in the center of the loading machine is formed in the inner side of the two protective covers and the inner side of the connecting cover on the same straight line, and a lifting assembly is installed outside the protective covers and comprises a fixed sleeve and a movable rod. The protective device has the advantages that the protective cover of the protective device is installed on the front connecting shaft in the center of the loading machine, and the connecting shaft can be covered with the containing groove matched with the connecting shaft below the protective cover, so that the connecting shaft is protected and prevented from being exposed outside, abrasion of the connecting shaft can be reduced, the service life of the connecting shaft is prolonged, and the service life of a hinge column is further prolonged. Meanwhile, the protective cover can be adjusted in a lifting mode, so that the connecting shaft is exposed after the protective cover is lifted, and workers can overhaul and maintain the connecting shaft conveniently.

Description

Technical Field

[0001] This utility model relates to the field of cross-shaft protection technology, and more specifically, to a protective device for the central front cross-shaft of a loader. Background Technology

[0002] A loader is a widely used earthmoving machine in construction projects such as highways, railways, buildings, hydropower, ports, and mines. It is primarily used for loading and unloading bulk materials such as soil, sand, gravel, lime, and coal, and can also perform light digging operations on ores and hard soil. With different auxiliary attachments, it can also be used for bulldozing, lifting, and loading and unloading other materials such as timber. In road construction, especially on high-grade highways, loaders are used for filling and excavating roadbeds, and for collecting and loading asphalt mixtures and cement concrete materials. They can also be used for pushing and transporting soil, leveling ground, and towing other machinery. Due to its advantages such as high operating speed, high efficiency, good maneuverability, and easy operation, the loader has become one of the main types of machinery used in earthmoving construction projects.

[0003] In existing technology, when a Shantui loader is used for loading and unloading coal in a coal yard, its central front connecting shaft is exposed, resulting in coal dust accumulation and clogging of the grease fittings. This makes grease application difficult, leading to poor lubrication of the connecting shaft, increased wear, and reduced service life. Furthermore, there is a lack of a safe and stable protective structure for the loader's central front connecting shaft. Meanwhile, a utility model patent with publication number CN219912637U discloses a driveshaft safety protection device, including a safety cover fitted onto the driveshaft and a suspension support device. The suspension support device includes a suspension element and a support beam fixed to the operating platform. The safety cover is connected to the support beam via the suspension element. The safety cover is a sleeve with an installation port along its length. A gap exists between the inner wall of the safety cover and the outer wall of the driveshaft. The length of the safety cover is shorter than the length of the driveshaft, making it unsuitable as a protective structure for the loader's central front connecting shaft. The safety cover needs to be quickly opened as needed, and its practicality and durability require improvement. Utility Model Content

[0004] To overcome the problems of the exposed central front connecting shaft of a loader in the existing technology, which leads to coal dust accumulation, easy grease plug blockage, difficulty in grease application, poor lubrication of the connecting shaft, increased wear, reduced service life, and lack of a safe and stable protective structure for the central front connecting shaft, this utility model provides a protective device for the central front connecting shaft of a loader, including a protective cover, a connecting cover, and a placement groove. Two protective covers are respectively connected to both ends of the connecting cover. The inner sides of the two protective covers and the connecting cover form a placement groove that matches the central front connecting shaft of the loader on a straight line. A lifting assembly is installed on the outside of the protective cover. The lifting assembly includes a fixed sleeve installed on the outside of the protective cover and a movable rod that can extend and retract along the inside of the fixed sleeve.

[0005] The protective cover of the protective device is installed on the central front joint shaft of the loader. The joint shaft can be covered by the placement groove under the protective cover, which matches the joint shaft, thereby protecting it and preventing it from being exposed. This can reduce the wear of the joint shaft, improve its service life, and further enhance the articulation column. At the same time, the protective cover can be raised and lowered to expose the joint shaft when raised, making it convenient for staff to inspect and maintain the joint shaft.

[0006] Preferably, the placement groove is an arc-shaped groove, and the inner diameter of the placement groove is larger than the diameter of the central front connecting shaft of the loader.

[0007] Preferably, the fixing sleeves are symmetrically installed on both sides of the protective cover, and fixing bolts are installed on the outer surface of the fixing sleeves.

[0008] Preferably, an oil injection opening is formed in the middle of the top of the protective cover, and a movable cover plate is installed on the oil injection opening.

[0009] With the oil filling opening and movable cover plate located on the top of the protective cover, lubricating oil can be injected as needed after opening, which facilitates the use of the protective device.

[0010] Preferably, the top edge of the protective cover is provided with lifting lugs.

[0011] Preferably, the outer surface of the protective cover is fitted with a reinforcing plate, and the inner wall of the protective cover is provided with a wear-resistant lining plate.

[0012] The strength of the protective cover can be improved by installing a reinforcing plate on the outside of the protective cover, giving it good pressure resistance and making it less prone to damage. The wear-resistant lining plate installed inside the protective cover can improve the wear resistance of the placement slot.

[0013] Preferably, the protective cover and the connecting cover are made of stainless steel.

[0014] Preferably, a fixed base plate is installed at the bottom of the movable rod, and a plurality of fixing holes are formed on the surface of the fixed base plate.

[0015] Preferably, the inner wall of the wear-resistant liner is provided with a corrosion-resistant coating.

[0016] Preferably, the total length of the two protective covers and the connecting cover matches the length of the exposed central front junction shaft of the loader.

[0017] The protective device can completely cover the joint shaft, preventing it from being exposed.

[0018] Beneficial effects:

[0019] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0020] (1) The protective cover of the protective device is installed on the central front junction shaft of the loader. The junction shaft can be covered by the placement groove matching the junction shaft under the protective cover, thereby protecting it and preventing it from being exposed to the outside. This can reduce the wear of the junction shaft, improve the service life of the junction shaft, and further improve the articulation column. At the same time, the protective cover can be raised and lowered to expose the junction shaft after being raised, and facilitate the maintenance of the junction shaft by the staff.

[0021] (2) By setting the oil injection opening and movable cover plate on the top of the protective cover, lubricating oil can be injected as needed after opening, which provides convenience for the use of the protective device.

[0022] (3) By setting a reinforcing plate on the outside of the protective cover, the strength of the protective cover can be improved, so that it has good pressure protection ability and is not easily damaged. By setting a wear-resistant liner inside the protective cover, the wear resistance of the placement groove can be improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the protective device for the central front connecting shaft of a loader according to this utility model;

[0025] Figure 2 This is a schematic diagram of the connection structure of the protective device for the central front axle of a loader according to this utility model.

[0026] Figure 3This is a schematic diagram of the side connection structure of the protective device for the central front axle of a loader according to this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the fixed base plate of the protective device for the central front axle of a loader according to this utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the protective cover on the protective device for the central front connecting shaft of a loader, which is a product of this utility model.

[0029] In the diagram: 1. Protective cover; 2. Connecting cover; 3. Placement slot; 4. Fixing sleeve; 5. Movable rod; 6. Fixing bolt; 7. Fixing base plate; 8. Lifting lug; 9. Fixing hole; 10. Reinforcing plate; 11. Wear-resistant liner; 12. Oil filling opening; 13. Movable cover plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] This embodiment installs the protective cover of the protective device on the central front hinge shaft of the loader. The hinge shaft is covered by a matching mounting groove below the protective cover, thus protecting it and preventing it from being exposed. This reduces wear on the hinge shaft, extends its service life, and further improves the hinge column. Simultaneously, the protective cover is adjustable in height, allowing the hinge shaft to be exposed when raised, facilitating maintenance and repair by personnel. The specific implementation method is as follows:

[0032] like Figures 1 to 5As shown, a protective device for the central front connecting shaft of a loader includes a protective cover 1, a connecting cover 2, and a placement groove 3. Two protective covers 1 are connected to each end of the connecting cover 2. The inner sides of the two protective covers 1 and the connecting cover 2 form a placement groove 3 that matches the central front connecting shaft of the loader. A lifting assembly is installed on the outside of the protective cover 1. The lifting assembly includes a fixed sleeve 4 installed on the outside of the protective cover 1 and a movable rod 5 that can extend and retract along the inside of the fixed sleeve 4. When the protective cover 1 of the protective device is installed on the central front connecting shaft of the loader, the connecting shaft can be covered by the placement groove 3 below the protective cover 1, thus protecting it and preventing it from being exposed. This reduces wear on the connecting shaft, increases its service life, and further improves the hinge column. Simultaneously, the protective cover 1 can be raised and lowered by the lifting assembly, exposing the connecting shaft when raised, facilitating maintenance and repair of the connecting shaft.

[0033] The placement groove 3 is an arc-shaped groove, and its inner diameter is larger than the diameter of the central front connecting shaft of the loader. An opening is formed at the bottom of the placement groove 3 to facilitate the passage of the connecting shaft up and down, and to enclose the connecting shaft within the arc-shaped groove, thus providing protection.

[0034] Fixed sleeves 4 are symmetrically installed on both sides of the protective cover 1, and fixed bolts 6 are installed on the outer surface of the fixed sleeves 4. By cooperating with the movable rod 5 and the fixed sleeves 4, the protective cover 1 and the connecting cover 2 can be lifted together, so that the fixed sleeves 4 can move up and down outside the movable rod 5. After the fixed bolts restrict the position of the fixed sleeves 4, the height adjustment of the fixed movable rod 5 and the fixed sleeves can realize the rapid entry and exit of the transfer shaft in the placement groove 3. The movable rod 5 can be fixed to the loader body below the transfer shaft, so that the positional relationship between the protective cover 1 and the transfer shaft can be adjusted by the lifting component.

[0035] An oil filling opening 12 is formed in the middle of the top of the protective cover 1, and a movable cover 13 is installed on the oil filling opening 12. By providing the oil filling opening 12 and the movable cover 13 on the top of the protective cover 1, lubricating oil can be injected as needed after opening the movable cover 13, which provides convenience for the use of the protective device.

[0036] The top edge of the protective cover 1 is equipped with lifting lugs 8. Lifting equipment can be connected via the lifting lugs to automatically lift the protective cover, thereby opening the protective cover 1 and exposing the exposed joint shaft. Ropes can also be connected to raise the protective cover 1.

[0037] A reinforcing plate 10 is installed on the outer surface of the protective cover 1, and a wear-resistant liner 11 is provided on the inner wall of the protective cover 1. The reinforcing plate 10 installed on the outside of the protective cover 1 can improve the strength of the protective cover 1, giving it good pressure resistance and making it less prone to damage. The wear-resistant liner 11 installed inside the protective cover 1 can improve the wear resistance of the placement groove 3.

[0038] The protective cover 1 and the connecting cover 2 are made of stainless steel.

[0039] A fixed base plate 7 is installed at the bottom of the movable rod 5, and several fixing holes 9 are formed on the surface of the fixed base plate 7. Through the fixed base plate 7 and the fixing holes 9, it can be connected and fixed to the loader body, which facilitates the use of the protective device.

[0040] The inner wall of the wear-resistant liner 11 is provided with a corrosion-resistant coating. The corrosion-resistant coating enhances the corrosion resistance of the inner wall of the protective cover 1, thereby increasing its service life.

[0041] The total length of the two protective covers 1 and the connecting cover 2 matches the exposed length of the central front junction shaft of the loader. The protective device can completely cover the junction shaft, preventing it from being exposed.

[0042] Working principle: The protective cover of the protective device is installed on the central front joint shaft of the loader. The joint shaft is covered by the placement groove under the protective cover, which matches the joint shaft, thus protecting it and preventing it from being exposed. This reduces wear on the joint shaft, increases its service life, and further improves the hinge column. At the same time, the protective cover can be raised and lowered to expose the joint shaft, making it convenient for workers to inspect and maintain the joint shaft. The oil filling opening and movable cover plate on the top of the protective cover allow for the injection of lubricating oil as needed, providing convenience for the use of the protective device. The reinforcing plate on the outside of the protective cover increases its strength, giving it good pressure resistance and making it less prone to damage. The wear-resistant lining plate inside the protective cover improves the wear resistance of the placement groove.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A protective device for the central front axle of a loader, characterized in that, It includes a protective cover (1), a connecting cover (2) and a placement groove (3). The two ends of the connecting cover (2) are respectively connected to two protective covers (1). The inner sides of the two protective covers (1) and the connecting cover (2) are formed in a straight line with a placement groove (3) that matches the central front connecting shaft of the loader. A lifting assembly is installed on the outside of the protective cover (1). The lifting assembly includes a fixed sleeve (4) installed on the outside of the protective cover (1) and a movable rod (5) that can extend and retract along the inside of the fixed sleeve (4).

2. A protective device for the central front axle of a loader according to claim 1, characterized in that, The placement groove (3) is an arc-shaped groove, and the inner diameter of the placement groove (3) is larger than the diameter of the central front junction shaft of the loader.

3. A protective device for the central front axle of a loader according to claim 1, characterized in that, The protective cover (1) is symmetrically equipped with the fixing sleeve (4) on both sides, and the fixing sleeve (4) is equipped with fixing bolts (6) on its outer surface.

4. A protective device for the central front axle of a loader according to claim 1, characterized in that, An oil injection opening (12) is formed in the middle of the top of the protective cover (1), and a movable cover plate (13) is installed on the oil injection opening (12).

5. A protective device for the central front axle of a loader according to claim 1, characterized in that, The protective cover (1) has a lifting lug (8) on the top edge.

6. A protective device for the central front axle of a loader according to claim 1, characterized in that, The outer surface of the protective cover (1) is equipped with a reinforcing plate (10), and the inner wall of the protective cover (1) is provided with a wear-resistant lining plate (11).

7. A protective device for the central front axle of a loader according to claim 1, characterized in that, The protective cover (1) and the connecting cover (2) are made of stainless steel.

8. A protective device for the central front axle of a loader according to claim 1, characterized in that, The bottom of the movable rod (5) is fitted with a fixed base plate (7), and the surface of the fixed base plate (7) has a plurality of fixing holes (9).

9. A protective device for the central front axle of a loader according to claim 6, characterized in that, The inner wall of the wear-resistant liner (11) is provided with a corrosion-resistant coating.

10. A protective device for the central front axle of a loader according to claim 1, characterized in that, The total length of the two protective covers (1) and the connecting cover (2) matches the length of the exposed central front junction shaft of the loader.

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