Steering device of wheel loader

Abstract

The utility model discloses a wheel loader steering device which comprises a front wheel bogie, a rear wheel bogie and a steering knuckle, a hydraulic telescopic rod is installed at the bottom end of one side of the front wheel bogie, a protective structure is arranged on the outer side of the hydraulic telescopic rod, the steering knuckle is arranged on one side of the front wheel bogie, and a lubricating structure is arranged at the top end of the steering knuckle. The lubricating structure comprises an oil tank, an oil injection hole, a ball bearing, a sleeve shell, a sponge mat, a brush and an oil conveying pipe, the oil injection hole is formed in the top end of the steering knuckle, and the oil tank is arranged at the top end of the oil injection hole. Lubricating oil is injected into the oil injection hole through the oil tank, and then the lubricating oil is smeared on the surface of the ball bearing through the oil conveying pipe, the sponge cushion and the sleeve shell to lubricate the rotating position of the steering knuckle, so that the lubricating and resistance reducing functions of the device are achieved, lubricating and resistance reducing are conveniently conducted on the steering knuckle, rotation of the steering knuckle is smoother, and the service life of the steering knuckle is prolonged. The service life of the steering knuckle is prolonged, and the functionality of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel loaders, in particular to a steering device for a wheel loader. Background Art

[0002] Wheel loaders are earth-moving machines widely used in highways, railways, ports, docks, coal, mines, water conservancy, national defense and other engineering and urban construction sites. They play an important role in reducing labor intensity, speeding up engineering construction and improving engineering quality. Wheel loaders use articulated steering when turning. The frame consists of two parts, front and rear, connected by hinge pins. It has the advantages of small turning radius and good maneuverability.

[0003] The existing technical solution has the following defects: when the device is in use, the steering knuckle is prone to rust. Since the wheel loader works in an outdoor environment for a long time, the chassis of the wheel loader is easily contaminated with mud and water, which makes the steering knuckle easy to rust, resulting in jerky steering of the steering knuckle, affecting the use of the device. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to provide a steering device for a wheel loader to solve the problems raised in the above background technology. (II) Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a wheel loader steering device, comprising a front wheel bogie, a rear wheel bogie and a steering knuckle, a hydraulic telescopic rod is installed at the bottom end of one side of the front wheel bogie, a protective structure is arranged on the outside of the hydraulic telescopic rod, a steering knuckle is arranged on one side of the front wheel bogie, and a lubrication structure is arranged at the top of the steering knuckle, the lubrication structure comprises an oil tank, an oil filling hole, a ball bearing, a sleeve, a sponge pad, a brush and an oil pipeline, the oil filling hole is installed at the top of the steering knuckle, and an oil tank is arranged at the top of the oil filling hole.

[0008] The wheel loader steering device using the technical solution connects the hydraulic telescopic rod to the hydraulic pipeline of the wheel loader, starts the hydraulic telescopic rod to extend or contract, and causes the hydraulic telescopic rod to push the front wheel bogie and the rear wheel bogie to move to both sides. Then the front wheel bogie and the rear wheel bogie rotate around the steering knuckle, adjusts the angle between the rear wheel axle and the front wheel axle, causes the wheel loader to steer, and lubricates the steering knuckle through the lubrication structure.

[0009] Preferably, a front wheel axle is installed on one side of the front wheel bogie, and wheel hubs are installed on both ends of the front wheel axle, a rear wheel bogie is installed on one side of the steering knuckle, and a rear wheel axle is fixed on one side of the rear wheel bogie.

[0010] Preferably, one side of the oil filling hole is connected to an oil delivery pipe, one side of the oil delivery pipe is connected to a casing, a sponge pad is arranged inside the casing, a brush is arranged at the bottom end of the sponge pad, and a ball bearing is arranged at the bottom end of the brush. Lubricating oil is injected into the oil filling hole through the oil tank, and then the lubricating oil passes through the oil delivery pipe, the sponge pad, and the casing to be applied to the surface of the ball bearing to lubricate the rotating part of the steering knuckle.

[0011] Preferably, the oil delivery pipe extends through the casing to the inside of the sponge pad, and the casing and the steering knuckle form an integrated structure.

[0012] Preferably, the protective structure comprises a folding sleeve, a first fixing plate, a second fixing plate and a triangular iron sheet, wherein the first fixing plate is fixed to the outside of the hydraulic telescopic rod, and a triangular iron sheet is provided on one side of the second fixing plate. The telescopic rod of the hydraulic telescopic rod is isolated and protected by the folding sleeve to prevent muddy water from falling on the surface of the piston rod of the hydraulic telescopic rod.

[0013] Preferably, the protective structure includes a folding sleeve, a first fixing plate, a second fixing plate and a triangular iron sheet, the first fixing plate is fixed to the outside of the hydraulic telescopic rod, and a triangular iron sheet is provided on one side of the second fixing plate.

[0014] Preferably, the foldable sleeve is in the shape of a hollow tubular structure with a wrinkled surface, and the foldable sleeve is a retractable structure.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are: the steering device of the wheel loader has a reasonable structure and has the following advantages:

[0017] (1) Lubricating oil is injected into the oil filling hole through the oil tank, and then the lubricating oil is smeared on the surface of the ball bearing through the oil pipe, the sponge pad, and the sleeve to lubricate the rotating part of the steering knuckle, thereby realizing the lubrication and resistance reduction function of the device, facilitating the lubrication and resistance reduction of the steering knuckle, making the rotation of the steering knuckle smoother, extending the service life of the steering knuckle, and enhancing the functionality of the device;

[0018] (2) The telescopic rod of the hydraulic telescopic rod is isolated and protected by the folding sleeve to prevent mud and water from falling on the surface of the piston rod of the hydraulic telescopic rod, thereby realizing the separation protection function of the device, preventing mud and water from adhering to the surface of the hydraulic telescopic rod, keeping the surface of the hydraulic telescopic rod smooth, and reducing the wear of the hydraulic telescopic rod during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0023] Figure 4 It is a schematic diagram of the front cross-sectional structure of the lubrication structure of the utility model.

[0024] Explanation of the reference numerals in the figure: 1. front wheel bogie; 2. protective structure; 201. folding sleeve; 202. first fixed plate; 203. second fixed plate; 204. triangular iron sheet; 3. hydraulic telescopic rod; 4. lubrication structure; 401. oil tank; 402. oil filling hole; 403. ball bearing; 404. sleeve; 405. sponge pad; 406. brush; 407. oil pipeline; 5. rear wheel bogie; 6. wheel hub; 7. steering knuckle; 8. front wheel axle; 9. rear wheel axle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] See also Figure 1-4 The utility model provides a wheel loader steering device, comprising a front wheel bogie 1, a rear wheel bogie 5 and a steering knuckle 7, a hydraulic telescopic rod 3 is installed at the bottom end of one side of the front wheel bogie 1, a protective structure 2 is arranged on the outer side of the hydraulic telescopic rod 3, a steering knuckle 7 is arranged on one side of the front wheel bogie 1, and a lubricating structure 4 is arranged on the top of the steering knuckle 7, the lubricating structure 4 comprises an oil tank 401, an oil filling hole 402, a ball bearing 403, a sleeve 404, a sponge pad 405, a brush 406 and an oil delivery pipe 407, the oil filling hole 402 is installed at the top of the steering knuckle 7, the top of the oil filling hole 402 is provided with an oil tank 401, and the front wheel bogie 1 is provided with a protective structure 2. A front wheel axle 8 is installed on one side of the bogie 1, and wheel hubs 6 are installed at both ends of the front wheel axle 8, a rear wheel bogie 5 is installed on one side of the steering knuckle 7, and a rear wheel axle 9 is fixed to one side of the rear wheel bogie 5, an oil pipe 407 is connected to one side of the oil filling hole 402, and a sleeve 404 is connected to one side of the oil pipe 407, a sponge pad 405 is arranged inside the sleeve 404, and a brush 406 is arranged at the bottom end of the sponge pad 405, and a ball bearing 403 is arranged at the bottom end of the brush 406, the oil pipe 407 extends to pass through the sleeve 404 and extends to the inside of the sponge pad 405, and the sleeve 404 and the steering knuckle 7 form an integrated structure.

[0029] The working principle of the steering device of the wheel loader based on the first embodiment is: by connecting the hydraulic telescopic rod 3 with the hydraulic pipeline of the wheel loader, starting the hydraulic telescopic rod 3 to extend or contract, so that the hydraulic telescopic rod 3 pushes the front wheel bogie 1 and the rear wheel bogie 5 to move to both sides, and then the front wheel bogie 1 and the rear wheel bogie 5 rotate around the steering knuckle 7, and the angle between the rear wheel axle 9 and the front wheel axle 8 is adjusted to make the wheel loader steer, and the steering knuckle 7 is lubricated by the lubricating structure 4, and the lubricating oil is injected into the oil filling hole 402 through the oil tank 401, and then the lubricating oil is injected into the casing 404 through the oil delivery pipe 407, and the lubricating oil is absorbed and stored by the sponge pad 405 to slow down the flow rate of the lubricating oil, and then the casing 404 applies the lubricating oil to the surface of the ball bearing 403, lubricates the rotating part of the steering knuckle 7, reduces the friction of the steering knuckle 7, and at the same time forms an oil film on the surface of the steering knuckle 7 to make the steering knuckle 7 not easy to rust.

[0030] Embodiment 2

[0031] This embodiment includes: the protective structure 2 includes a folding sleeve 201, a first fixed plate 202, a second fixed plate 203 and a triangular iron sheet 204, the first fixed plate 202 is fixed to the outside of the hydraulic telescopic rod 3, and a triangular iron sheet 204 is arranged on one side of the second fixed plate 203. The protective structure 2 includes a folding sleeve 201, a first fixed plate 202, a second fixed plate 203 and a triangular iron sheet 204, the first fixed plate 202 is fixed to the outside of the hydraulic telescopic rod 3, and a triangular iron sheet 204 is arranged on one side of the second fixed plate 203. The shape of the folding sleeve 201 is a hollow tubular structure with a wrinkled surface, and the folding sleeve 201 is a telescopic structure.

[0032] In this embodiment, the folding sleeve 201 is put on the outside of the hydraulic telescopic rod 3 to isolate and protect the telescopic rod of the hydraulic telescopic rod 3 to prevent mud and water from falling on the surface of the telescopic rod of the hydraulic telescopic rod 3. The folds on the surface of the folding sleeve 201 facilitate the contraction and extension of the hydraulic telescopic rod 3 as the hydraulic telescopic rod 3 operates. The folding sleeve 201 is fixed to the position of the second fixed plate 203 by the triangular iron sheet 204 to fix the position of the folding sleeve 201.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wheel loader steering device, comprising a front wheel bogie (1), a rear wheel bogie (5) and a steering knuckle (7), characterized in that: A hydraulic telescopic rod (3) is installed at the bottom end of one side of the front wheel bogie (1), and a protective structure (2) is arranged on the outer side of the hydraulic telescopic rod (3). A steering knuckle (7) is arranged on one side of the front wheel bogie (1), and a lubrication structure (4) is arranged at the top of the steering knuckle (7). The lubrication structure (4) comprises an oil tank (401), an oil injection hole (402), a ball bearing (403), a sleeve (404), a sponge pad (405), a brush (406) and an oil delivery pipe (407). The oil injection hole (402) is installed at the top of the steering knuckle (7), and an oil tank (401) is arranged at the top of the oil injection hole (402).

2. A wheel loader steering device according to claim 1, characterized in that: A front wheel axle (8) is installed on one side of the front wheel bogie (1), and wheel hubs (6) are installed on both ends of the front wheel axle (8); a rear wheel bogie (5) is installed on one side of the steering knuckle (7), and a rear wheel axle (9) is fixed on one side of the rear wheel bogie (5).

3. A wheel loader steering device according to claim 1, characterized in that: One side of the oil filling hole (402) is connected to an oil delivery pipe (407), one side of the oil delivery pipe (407) is connected to a casing (404), a sponge pad (405) is arranged inside the casing (404), a brush (406) is arranged at the bottom end of the sponge pad (405), and a ball bearing (403) is arranged at the bottom end of the brush (406).

4. A wheel loader steering device according to claim 1, characterized in that: The oil delivery pipe (407) extends through the casing (404) and extends to the interior of the sponge pad (405), and the casing (404) and the steering knuckle (7) form an integrated structure.

5. A wheel loader steering device according to claim 1, characterized in that: The protective structure (2) comprises a folding sleeve (201), a first fixing plate (202), a second fixing plate (203) and a triangular iron sheet (204); the first fixing plate (202) is fixed to the outside of the hydraulic telescopic rod (3); and a triangular iron sheet (204) is provided on one side of the second fixing plate (203).

6. A wheel loader steering device according to claim 5, characterized in that: A folding sleeve (201) is fixed to the other side of the second fixing plate (203), and a first fixing plate (202) is fixed to one side of the folding sleeve (201).

7. A wheel loader steering device according to claim 5, characterized in that: The folding sleeve (201) is in the shape of a hollow tubular structure with wrinkles on the surface, and the folding sleeve (201) is a retractable structure.

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