Frame hinging structure of loading machine

Abstract

The utility model provides a frame hinge structure of a loader, which comprises a front frame, a rear frame, a first hinge frame and a second hinge frame, front wheels and rear wheels are arranged at the bottom of the front frame and the bottom of the rear frame, a loading bucket is movably mounted on the front frame, the rear frame is an operation area, and the first hinge frame and the second hinge frame are hinged to each other. The operation area is provided with a driver seat, an operation rod for controlling the loading bucket to move and a steering wheel for controlling the front wheels and the rear wheels, the first hinge frame is fixedly installed on the rear frame, the second hinge frame is fixedly installed on the outer wall of the side, opposite to the front frame, of the rear frame, and the first hinge frame and the second hinge frame are connected through a hinge structure. The hinge structure is further connected with a self-lubricating mechanism, the self-lubricating mechanism is fixedly installed on the first hinge frame, the first hinge frame is further provided with a leaked oil collecting box, and the leaked oil collecting box is detachably connected with the first hinge frame. And the steering precision is reduced and the service life is shortened due to serious abrasion and insufficient lubrication of a hinged part.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a frame hinge structure of a loader. Background Technique

[0002] As an important construction machinery, the frame hinge structure of a loader directly affects the steering performance and stability of the whole machine. There are problems such as insufficient lubrication and serious wear in the traditional frame hinge structure of a loader, resulting in a decrease in steering accuracy and even safety accidents. Therefore, it is necessary to improve the existing frame hinge structure of a loader.

[0003] In road construction, especially in the construction of high-grade highways, loaders are used for operations such as filling and excavation of subgrade projects, and aggregation and loading of asphalt mixture and cement concrete yards. In addition, it can also perform operations such as pushing soil, leveling the ground, and towing other machinery. Due to the advantages of fast operation speed, high efficiency, good mobility, and easy operation of loaders, they have become one of the main types of machinery for earthwork construction in engineering construction.

[0004] When the loader is working, due to long-term work and untimely lubrication of the hinge shaft, the clearance between the assembled hinge pin shafts becomes larger, which is extremely easy to wear and damage, resulting in a large steering swing of the machine, brake failure, an increase in impact force during operation, and a shortening of the service life of the whole machine.

[0005] The purpose of the utility model is to provide a frame hinge structure of a loader to solve the problems mentioned in the above background technique. Content of the Utility Model

[0006] To achieve the above purpose, the utility model provides a frame hinge structure of a loader, which includes a front frame, a rear frame, a first hinge frame, and a second hinge frame. Front wheels and rear wheels are provided at the bottoms of the front frame and the rear frame. A loading bucket is movably installed at one end of the front frame opposite to the second hinge frame. One end of the rear frame opposite to the first hinge frame is set as an operation area, and a driver's seat, an operating lever for controlling the movement of the loading bucket, and a steering wheel for controlling the directions of the front wheels and the rear wheels are provided in the operation area. The first hinge frame is fixedly installed on the rear frame. The second hinge frame is fixedly installed on the outer wall of the rear frame opposite to the front frame. The first hinge frame and the second hinge frame are connected by a hinge structure, and a self-lubricating mechanism is also connected to the hinge structure. The self-lubricating mechanism is fixedly installed on the first hinge frame. An oil leakage collection box is also provided on the first hinge frame, and the oil leakage collection box is detachably connected to the first hinge frame;

[0007] The first hinge frame and the second hinge frame both include two first hinge arms and two second hinge arms. The two first hinge arms are arranged on the same vertical plane of the outer wall of the rear vehicle frame, and the two second hinge arms are arranged on the same vertical plane of the outer wall of the front vehicle frame. The two first hinge arms and the second hinge arms correspond to each other and are connected to each other through a hinge structure.

[0008] As a further improvement of the present utility model, mounting holes for mounting the hinge structure are formed in both the first hinge arm and the second hinge arm. The hinge structure includes a hinge pin, a first connecting bearing, and a second connecting bearing. The first connecting bearing and the second connecting bearing are respectively mounted on the first hinge arm and the second hinge arm. The hinge pin sequentially passes through the first connecting bearing and the second connecting bearing and extends out of the bottom of the first hinge arm and is threadedly connected with a cover. The cover makes the hinge pin stably mounted on the first hinge arm and the second hinge arm, and the hinge pin is connected to the self-lubricating mechanism.

[0009] As a further improvement of the present utility model, the self-lubricating mechanism includes an oil storage tank, an oil pump, and an oil pipe. The oil storage tank is mounted at the top end of one of the first hinge arms. One end of the oil pipe is connected to the oil storage tank, and there is also an electromagnetic valve on the oil pipe. An oil injection port is provided at the top of the hinge pin. The other end of the oil pipe is connected with two branch pipes, and the two branch pipes are respectively connected to the oil injection ports of each hinge pin. The oil pump is mounted on the oil pipe. Oil injection ports are provided at positions on the hinge pin corresponding to the connection with each of the first connecting bearing and the second connecting bearing. A leak oil collection box is detachably provided at the bottom of the second hinge arm, and the leak oil collection box covers the outside of the cover.

[0010] As a further improvement of the present utility model, the first connecting bearing includes a first tapered roller bearing and a second tapered roller bearing. The first tapered roller bearing and the second tapered roller bearing are both mounted in the mounting holes on the upper and lower hinge plates of the first hinge arm. The first tapered roller bearing and the second tapered roller bearing are mounted on the same vertical line and are tightly fitted and fixed.

[0011] As a further improvement of the present utility model, a hollow threaded sleeve is provided at the bottom of the first hinge arm. The hollow threaded sleeve is arranged around the cover, and the top of the leak oil collection box is screwed and connected with the hollow threaded sleeve through a thread.

[0012] As a further improvement of the present utility model, the hollow threaded sleeve covers the periphery of the cover and does not affect the installation and disassembly of the cover. The thread of the hollow threaded sleeve is only provided on the inner wall of the bottom end and does not exceed the position of the cover. A section of threaded wall equal in length to the inner wall of the hollow threaded sleeve is provided on the outer wall of the top of the leak oil collection box.

[0013] As a further improvement of the present utility model, reinforcing rib plates are provided on both sides of the first articulated arm opposite to the second articulated arm, and the reinforcing rib plates are installed around the mounting holes.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model adopts a hinge pin made of high-strength alloy steel. One end of the hinge pin is formed with a thread through precision machining and is fixed to the first articulated arm of the rear frame through a high-strength cover. The other end of the hinge pin passes through the hinge mounting hole of the rear frame and is matched with a special connecting bearing. A lubrication mechanism is connected to the top of the hinge pin, and an oil injection port is provided at the connection with the connecting bearing, which is convenient for adding lubricating oil regularly to ensure good lubrication of the articulated part.

[0016] 2. To further improve the strength and stability of the articulated structure, the present utility model welds reinforcing rib plates around the articulated part of the front frame and the rear frame. The reinforcing rib plates not only enhance the overall rigidity of the frame but also help to disperse the stress concentration phenomenon generated during the steering process.

[0017] 3. The present utility model also designs a self-lubricating mechanism, which includes components such as an oil storage tank, an oil pump, and an oil pipe. The oil storage tank stores sufficient lubricating oil. The oil pump is started regularly during the operation of the loader to transport the lubricating oil through the oil pipe to the hinge pin, and lubrication is carried out through the oil injection port of the hinge pin. This mechanism effectively solves the problems of untimely and uneven manual lubrication. The application of the self-lubricating mechanism effectively reduces the wear degree of the articulated part, thereby extending the overall service life of the loader, reducing the occurrence of fault phenomena caused by insufficient lubrication and severe wear, and reducing the maintenance cost and use risk of the loader.

[0018] 4. In order to prevent oil leakage and waste during the oil injection process of the self-lubricating mechanism for the articulated structure, the present utility model is provided with an oil leakage collection box below the second articulated arm, which can collect and purify the lubricating oil in the oil leakage collection box for reuse to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0020] Figure 2 is the connection structure schematic diagram of the first articulated frame and the second articulated frame of the present utility model;

[0021] Figure 3 is the connection structure schematic diagram of the articulated structure of the present utility model with the first articulated arm and the second articulated arm;

[0022] Figure 4For the present utility model Figure 3 separation diagram.

[0023] In the figure: 1. Rear frame; 11. First hinge frame; 111. First hinge arm; 112. Oil leakage collection box; 113. Hollow threaded sleeve; 12. Loading bucket; 13. Rear wheel;

[0024] 2. Front frame; 21. Second hinge frame; 211. Second hinge arm; 22. Front wheel; 23. Operating rod; 24. Steering wheel; 25. Driver's seat;

[0025] 3. Hinge structure; 31. Hinge pin; 311. Oil injection port; 312. Oil filling port; 32. Tapered roller bearing one; 33. Tapered roller bearing two; 34. Cover;

[0026] 4. Reinforcing rib plate;

[0027] 5. Lubrication mechanism; 51. Oil storage tank; 52. Oil pump; 53. Oil pipe; 54. Solenoid valve. Specific embodiments

[0028] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] The present utility model will be further described in detail below with reference to the drawings.

[0031] Embodiment 1:

[0032] Please refer to Figures 1-4, the present utility model provides a frame hinge structure 3 for a loader, including a front frame 2, a rear frame 1, a first hinge frame 11, and a second hinge frame 21. Front wheels 22 and rear wheels 13 are provided at the bottoms of the front frame 2 and the rear frame 1. A loading bucket 12 is movably installed at one end of the front frame 2 opposite to the second hinge frame 21. One end of the rear frame 1 opposite to the first hinge frame 11 is set as an operation area, and a driver's seat 25, an operating lever 23 for controlling the movement of the loading bucket 12, and a steering wheel 24 for controlling the directions of the front wheels 22 and the rear wheels 13 are provided in the operation area. The first hinge frame 11 is fixedly installed on the rear frame 1, and the second hinge frame 21 is fixedly installed on the outer wall of the side of the rear frame 1 opposite to the front frame 2. The first hinge frame 11 and the second hinge frame 21 are connected by a hinge structure 3, and a self-lubricating mechanism 5 is also connected to the hinge structure 3. The self-lubricating mechanism 5 is fixedly installed on the first hinge frame 11, and an oil leakage collection box 112 is also provided on the first hinge frame 11. The oil leakage collection box 112 is detachably connected to the first hinge frame 11;

[0033] Both the first hinge frame 11 and the second hinge frame 21 include two first hinge arms 111 and two second hinge arms 211. The two first hinge arms 111 are arranged on the same vertical plane of the outer wall of the rear frame 1, and the two second hinge arms 211 are arranged on the same vertical plane of the outer wall of the front frame 2. The two first hinge arms 111 and the two second hinge arms 211 correspond to each other and are connected to each other through the hinge structure 3.

[0034] Mounting holes for installing the hinge structure 3 are formed on both the first hinge arm 111 and the second hinge arm 211. The hinge structure 3 includes a hinge pin 31, a first connecting bearing, and a second connecting bearing. The first connecting bearing and the second connecting bearing are respectively installed on the first hinge arm 111 and the second hinge arm 211. The hinge pin 31 sequentially passes through the first connecting bearing and the second connecting bearing and extends out of the bottom of the first hinge arm 111 and is threadedly connected with a sealing cover 34. The hinge pin 31 is stably installed on the first hinge arm 111 and the second hinge arm 211 through the sealing cover 34, and the hinge pin 31 is connected to the self-lubricating mechanism 5.

[0035] The self-lubricating mechanism 5 includes an oil storage tank 51, an oil pump 52, and an oil pipe 53. The oil storage tank 51 is installed at the top of one of the first hinge arms 111. One end of the oil pipe 53 is connected to the oil storage tank 51, and there is also an electromagnetic valve 54 on the oil pipe 53. The top of the hinge pin 31 is provided with an oil injection port 312. The other end of the oil pipe 53 is connected with two branch pipes, and the two branch pipes are respectively connected to the oil injection ports 312 of each hinge pin 31. The oil pump 52 is installed on the oil pipe 53. At the position corresponding to the connection of each connection bearing one and the connection bearing two on the hinge pin 31, there is an oil injection port 311. A leakage oil collection box 112 is detachably arranged at the bottom of the second hinge arm 211, and the leakage oil collection box 112 covers the outside of the sealing cover 34.

[0036] During use, insert the two first hinge arms 111 on the front vehicle frame 2 into the two second hinge arms 211 on the rear vehicle frame 1, and align the mounting holes on the first hinge arm 111 and the second hinge arm 211 one by one. Then, pass the hinge pin 31 in the hinge structure 3 through the second hinge arm 211 from the top of the first hinge arm 111 and extend out of the bottom of the first hinge arm 111, and then connect and fix it through the sealing cover 34. Then, connect the oil pipe 53 of the self-lubricating mechanism 5 to the oil injection port 312 at the top of the hinge pin 31. Finally, install the leakage oil collection box 112 at the bottom of the first hinge arm 111. In this embodiment, the hinge pin 31 is made of high-strength alloy steel. One end of the hinge pin 31 is formed with a thread through precision machining and is fixed to the first hinge arm 111 of the rear vehicle frame 1 through the high-strength sealing cover 34. The other end of the hinge pin 31 passes through the hinge mounting hole of the rear vehicle frame 1 and cooperates with a special connection bearing. A lubricating mechanism 5 is connected to the top of the hinge pin 31, and an oil injection port 311 is provided at the connection with the connection bearing to facilitate regular addition of lubricating oil and ensure good lubrication of the hinge part. The oil storage tank 51 stores sufficient lubricating oil. The oil pump 52 is regularly started during the working process of the loader to transport the lubricating oil through the oil pipe 53 to the hinge pin 31, and oil injection lubrication is carried out through the oil injection port 311 of the hinge pin 31. This mechanism effectively solves the problems of untimely and uneven manual lubrication. The application of the self-lubricating mechanism 5 effectively reduces the wear degree of the hinge part, thereby extending the overall service life of the loader, reducing the occurrence of failure phenomena caused by insufficient lubrication, severe wear, etc., and reducing the maintenance cost and use risk of the loader.

[0037] Embodiment Two:

[0038] Please refer to Figures 2-4, the first connecting bearing includes a first tapered roller bearing 32 and a second tapered roller bearing 33. The first tapered roller bearing 32 and the second tapered roller bearing 33 are installed in the mounting holes on the upper and lower hinge plates of the first hinge arm 111. The first tapered roller bearing 32 and the second tapered roller bearing 33 are installed on the same vertical line and are closely fitted and fixed.

[0039] In this embodiment, two bearings are installed in each of the two mounting holes in the first hinge arm 111, which can share the load together, enhance the load-bearing capacity of the hinge structure 3, and at the same time improve the stability of the loader under complex working conditions. By dispersing the load, the wear of a single bearing is reduced, thereby extending the service life of the bearing and the entire hinge structure 3. The double-bearing design may be more conducive to the distribution and retention of lubricating oil, reducing wear and failures caused by poor lubrication.

[0040] Embodiment Three:

[0041] Please refer to Figures 3-4 , a hollow threaded sleeve 113 is provided at the bottom of the first hinge arm 111. The hollow threaded sleeve 113 is arranged around the sealing cover 34. The top of the oil leakage collection box 112 is screwed and connected to the hollow threaded sleeve 113 through threads.

[0042] The hollow threaded sleeve 113 covers the periphery of the sealing cover 34 without affecting the installation and disassembly of the sealing cover 34. The thread of the hollow threaded sleeve 113 is only provided on the inner wall of the bottom end and does not exceed the position of the sealing cover 34. A section of thread wall equal in length to the inner wall of the hollow threaded sleeve 113 is provided on the outer wall of the top of the oil leakage collection box 112.

[0043] In this embodiment, in order to prevent oil leakage and waste during the process of the self-lubricating mechanism 5 injecting oil into the hinge structure 3, an oil leakage collection box 112 is provided below the second hinge arm 211. The oil leakage collection box 112 is screwed and connected to the hollow threaded sleeve 113 at the bottom of the first hinge arm 111 through threads, which is convenient for assembly and disassembly. The lubricating oil in the oil leakage collection box 112 can be collected, purified and reused to avoid waste of resources.

[0044] Embodiment Four:

[0045] Please refer to Figure 4 , reinforcing rib plates 4 are provided on both sides of the first hinge arm 111 opposite to the second hinge arm 211. The reinforcing rib plates 4 are installed around the mounting holes.

[0046] In this embodiment, to further improve the strength and stability of the hinge structure 3, reinforcing rib plates 4 are welded around the hinge parts of the front frame 2 and the rear frame 1. The reinforcing rib plates 4 not only enhance the overall rigidity of the frame but also help to disperse the stress concentration phenomenon generated during the steering process.

[0047] The above exemplary description of the present invention is made in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A frame articulation structure (3) of a loader, characterized in that: The invention comprises a front frame (2), a rear frame (1), a first articulated frame (11), and a second articulated frame (21); the bottoms of the front frame (2) and the rear frame (1) are provided with front wheels (22) and rear wheels (13); a loading bucket (12) is movably mounted on the end of the front frame (2) opposite to the second articulated frame (21); the end of the rear frame (1) opposite to the first articulated frame (11) is provided as an operating area; the operating area is provided with a driver's seat (25), an operating lever (23) for controlling the movement of the loading bucket (12), and a steering wheel (24) for controlling the direction of the front wheel (22) and the rear wheel (13); The first articulated frame (11) is fixedly mounted on the rear frame (1), and the second articulated frame (21) is fixedly mounted on an outer wall of the rear frame (1) on a side opposite to the front frame (2). The first articulated frame (11) and the second articulated frame (21) are connected via an articulated structure (3), and the articulated structure (3) is also connected to a self-lubricating mechanism (5). The self-lubricating mechanism (5) is fixedly mounted on the first articulated frame (11). The first articulated frame (11) is also provided with an oil leakage collection box (112), and the oil leakage collection box (112) is detachably connected to the first articulated frame (11); The first articulated frame (11) and the second articulated frame (21) each comprise two first articulated arms (111) and a second articulated arm (211); the two first articulated arms (111) are arranged on the same vertical plane of the outer wall of the rear frame (1); the two second articulated arms (211) are arranged on the same vertical plane of the outer wall of the front frame (2); the two first articulated arms (111) and the two second articulated arms (211) correspond to each other and are connected to each other via an articulated structure (3).

2. The frame articulation structure (3) of a loader according to claim 1, characterized in that: The first articulated arm (111) and the second articulated arm (211) are both provided with mounting holes for mounting the articulated structure (3). The articulated structure (3) comprises a hinge pin (31) and a connecting bearing 1 and a connecting bearing 2. The connecting bearing 1 and the connecting bearing 2 are respectively mounted on the first articulated arm (111) and the second articulated arm (211). The hinge pin (31) passes through the connecting bearing 1 and the connecting bearing 2 in sequence and extends out of the bottom of the first articulated arm (111). The bottom of the first articulated arm (111) is connected to a cover (34) through a thread. The cover (34) enables the hinge pin (31) to be stably mounted on the first articulated arm (111) and the second articulated arm (211). The hinge pin (31) is connected to the self-lubricating mechanism (5).

3. The frame articulation structure (3) of a loader according to claim 2, characterized in that: The self-lubricating mechanism (5) comprises an oil storage tank (51), an oil pump (52), and an oil pipe (53). The oil storage tank (51) is installed at the top of one of the first articulated arms (111). One end of the oil pipe (53) is connected to the oil storage tank (51), and the oil pipe (53) is also provided with a solenoid valve (54). The top of the hinge pin (31) is provided with an oil filling port (312). The other end of the oil pipe (53) is connected to two branch pipes, and the two branch pipes are respectively connected to the oil filling port (312) of each hinge pin (31). The oil pump (52) is installed on the oil pipe (53). An oil injection port (311) is provided at a position on the hinge pin (31) corresponding to the connection between each of the connecting bearings 1 and 2. The bottom of the second articulated arm (211) is detachably provided with a leakage oil collection box (112), and the leakage oil collection box (112) is covered on the outside of the cover (34).

4. The frame articulation structure (3) of a loader according to claim 2, characterized in that: The connecting bearing 1 includes a tapered roller bearing 1 (32) and a tapered roller bearing 2 (33). The tapered roller bearing 1 (32) and the tapered roller bearing 2 (33) are installed in the mounting holes on the upper and lower hinge plates of the first hinge arm (111). The tapered roller bearing 1 (32) and the tapered roller bearing 2 (33) are installed on the same vertical line and are tightly fitted and fixed.

5. The frame articulation structure (3) of a loader according to claim 4, characterized in that: A hollow threaded sleeve (113) is provided at the bottom of the first hinged arm (111), and the hollow threaded sleeve (113) is arranged on the periphery of the sealing cover (34). The top of the leaked oil collection box (112) is screwed and connected to the hollow threaded sleeve (113) via a thread.

6. The frame articulation structure (3) of a loader according to claim 5, characterized in that: The hollow threaded sleeve (113) is arranged on the periphery of the sealing cover (34) and does not affect the installation and removal of the sealing cover (34). The thread of the hollow threaded sleeve (113) is only arranged on the inner wall of the bottom end and does not exceed the position of the sealing cover (34). The top outer wall of the oil leakage collection box (112) is provided with a threaded wall of the same length as the inner wall of the hollow threaded sleeve (113).

7. The frame articulation structure (3) of a loader according to claim 4, characterized in that: A reinforcing rib plate (4) is provided on one side of the first hinged arm (111) and the other side of the second hinged arm (211), and the reinforcing rib plate (4) is installed on the periphery of the installation hole.

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