Gas-liquid suspension rotary sheath for mine car

Abstract

The utility model belongs to the technical field of mining dump trucks, and particularly relates to a mine car gas-liquid suspension rotary sheath, which comprises a fixed sleeve connected with the bottom of a suspension cylinder, and is characterized in that a rotary sleeve is rotatably mounted on the outer wall of the fixed sleeve and is fixedly connected with a protective sleeve component; the protective sleeve assembly sequentially comprises a connecting portion, a protective portion and a fixing portion from top to bottom, the protective portion is arranged on the periphery of the suspension cylinder plunger in a sleeved mode, the fixing portion is connected with the steering knuckle, and a walking wheel installation portion is arranged on the steering knuckle. Rainwater erosion and sediment pollution are reduced, the suspension cylinder and the steering knuckle can rotate relatively in the working process, and the protective sleeve assembly is of a flexible structure, so that the plunger can move up and down conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of mine dump trucks, and specifically relates to a rotary sheath for a pneumatic-hydraulic suspension of a mine car. Background Art

[0002] The suspension system of a pure electric mine dump truck adopts a pneumatic-hydraulic suspension. The structure of the pneumatic-hydraulic suspension device is similar to that of a closed plunger cylinder. The upper cavity of the cylinder is filled with hydraulic oil and nitrogen. The plunger is connected to the walking wheel. When the walking wheel moves up and down, it drives the plunger to move up and down and squeezes the hydraulic oil and nitrogen in the upper cavity of the cylinder. Since the gas can be compressed, it plays a buffering role. Since the plunger is exposed to the air, and the working environment in the mining area is harsh, the exposed plunger will be eroded by rainwater and polluted by sediment. The plunger cannot be lubricated in a timely manner, and the sediment will accelerate the wear of the up and down moving plunger, reducing the service life of the mine car. Content of the Utility Model

[0003] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a rotary sheath for a pneumatic-hydraulic suspension of a mine car.

[0004] A rotary sheath for a pneumatic-hydraulic suspension of a mine car includes a fixed sleeve connected to the bottom of a suspension cylinder. A rotating sleeve is rotatably installed on the outer wall of the fixed sleeve. The rotating sleeve is fixedly connected to a protective sleeve assembly. The protective sleeve assembly includes a connecting part, a protective part, and a fixing part from top to bottom in sequence. The protective part is sleeved on the outer periphery of the plunger of the suspension cylinder. The fixing part is connected to a steering knuckle, and a walking wheel mounting part is provided on the steering knuckle.

[0005] Further, the longitudinal section of the fixed sleeve is a Z-shaped structure, and the bottom of the fixed sleeve is fixedly connected to the suspension cylinder by bolts.

[0006] Further, an annular raceway is provided on the outer wall of the fixed sleeve. Ball bearings are provided in the raceway. Through holes are provided on the rotating sleeve corresponding to the ball bearings. The ball bearings are located in the cavity where the through holes communicate with the raceway. The hole wall of the through hole is connected to a plug, and the plug is in rolling connection with the ball bearings.

[0007] Further, a fixing groove is provided on the outer wall of the connecting part, and an annular pipe clamp is provided at the fixing groove.

[0008] Further, a sealing member is provided at the connection between the fixed sleeve and the rotating sleeve.

[0009] Further, the fixing part is connected to the steering knuckle by bolts.

[0010] Due to the adoption of the above technical solution, the beneficial technical effects of the present utility model are as follows: In the present utility model, by providing a protective sleeve assembly, it can effectively prevent the plunger from being exposed in the environment, reducing rain erosion and sediment pollution. The connecting part at the top of the protective sleeve assembly is fixedly connected to the rotating sleeve, and the connecting part at the top of the rotating sleeve is fixedly connected to the rotating sleeve. The rotating sleeve is rotatably connected to the fixed sleeve, and the fixed sleeve is fixedly installed on the suspension cylinder. Therefore, the protective sleeve assembly is relatively rotatably installed at the bottom of the suspension cylinder. The fixing part at the bottom of the protective sleeve assembly is fixedly connected to the steering knuckle. Thus, relative rotation between the suspension cylinder and the steering knuckle can be achieved during the working process. The protective sleeve assembly is a flexible structure, facilitating the up and down movement of the plunger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is an installation schematic diagram of the pneumatic-hydraulic suspension rotating sheath of the present utility model for a mine car;

[0012] Figure 2 FIG. is a sectional structure schematic diagram of the pneumatic-hydraulic suspension rotating sheath of the present utility model for a mine car;

[0013] Figure 3 For the present utility model Figure 2 An enlarged schematic diagram of area A;

[0014] Figure 4 FIG. is a sectional structure schematic diagram of the protective sleeve assembly in the present utility model;

[0015] Figure 5 FIG. is a sectional structure schematic diagram of the fixed sleeve in the present utility model;

[0016] Figure 6 For the present utility model Figure 5 An enlarged schematic diagram of area B;

[0017] Figure 7 FIG. is a sectional structure schematic diagram of the rotating sleeve in the present utility model;

[0018] Figure 8 For the present utility model Figure 7 An enlarged schematic diagram of area C.

[0019] In the figure, 1, fixed sleeve; 2, suspension cylinder; 3, rotating sleeve; 4, protective sleeve assembly; 41, connecting part; 42, protective part; 43, fixing part; 6, raceway; 7, ball; 8, through hole; 9, plug; 10, fixing groove; 11, pipe clamp; 12, seal; 13, steering knuckle; 14, walking wheel mounting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To more clearly illustrate the technical solution of the present utility model, the following further describes the present utility model in conjunction with the accompanying drawings. Obviously, the following described drawings are only one embodiment of the present utility model. For those of ordinary skill in the art, without creative work, obtaining other embodiments based on this drawing and embodiment belongs to the protection scope of the present utility model.

[0021] According to Figures 1-8 As shown, a pneumatic-hydraulic suspension rotating sheath for a mine car includes a fixed sleeve 1 connected to the bottom of a suspension cylinder 2. A rotating sleeve 3 is rotatably installed on the outer wall of the fixed sleeve 1. The rotating sleeve 3 is fixedly connected to a protective sleeve assembly 4. The protective sleeve assembly 4 successively includes a connecting portion 41, a protective portion 42, and a fixing portion 43 from top to bottom. The protective portion 42 is sleeved on the outer periphery of the plunger of the suspension cylinder 2. The fixing portion 43 is connected to a steering knuckle 13, and a walking wheel mounting portion 14 is provided on the steering knuckle 13.

[0022] In the above specific technical solution, by providing the protective sleeve assembly 4, it can effectively prevent the plunger from being exposed in the environment, reducing rain erosion and sediment pollution. The connecting portion 41 at the top of the protective sleeve assembly 4 is fixedly connected to the rotating sleeve 3. The connecting portion 41 at the top of the rotating sleeve 3 is fixedly connected to the rotating sleeve 3. The rotating sleeve 3 is rotatably connected to the fixed sleeve 1, and the fixed sleeve 1 is fixedly installed on the suspension cylinder 2. Therefore, the protective sleeve assembly 4 is relatively rotatably installed at the bottom of the suspension cylinder 2. The fixing portion 43 at the bottom of the protective sleeve assembly 4 is fixedly connected to the steering knuckle 13. Thus, relative rotation between the suspension cylinder 2 and the steering knuckle 13 can be achieved during the working process. The protective sleeve assembly 4 is a flexible structure, facilitating the up and down movement of the plunger.

[0023] The longitudinal section of the fixed sleeve 1 is a Z-shaped structure, and the bottom of the fixed sleeve 1 is fixedly connected to the suspension cylinder 2 by bolts.

[0024] An annular raceway 6 is provided on the outer wall of the fixed sleeve 1. A ball 7 is provided in the raceway 6. A through hole 8 is provided on the rotating sleeve 3 corresponding to the ball 7. The ball 7 is located in the cavity where the through hole 8 communicates with the raceway 6. The hole wall of the through hole 8 is connected to a plug 9, and the plug 9 is in rolling connection with the ball 7. During the actual installation process, the ball 7 is placed in the cavity where the through hole 8 communicates with the raceway 6, and then the plug 9 is installed.

[0025] A fixing groove 10 is provided on the outer wall of the connecting portion 41. An annular pipe clamp 11 is provided at the fixing groove 10. The connecting portion 41 is fixedly connected to the rotating sleeve 3 through the pipe clamp 11, enabling the protective sleeve assembly 4 to continue to rotate with the rotating sleeve 3.

[0026] A sealing member 12 is provided at the connection between the fixed sleeve 1 and the rotating sleeve 3 to prevent rainwater from entering the protective sleeve assembly 4 to erode the plunger.

[0027] The fixing part 43 is connected to the steering knuckle 13 by bolts, and the traveling wheel is connected to the steering knuckle 13 through the traveling wheel mounting part 14.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A pneumatic-hydraulic suspension rotating sheath for a mine car, comprising a fixed sleeve (1) connected to the bottom of a suspension cylinder (2), characterized in that, A rotating sleeve (3) is rotatably mounted on the outer wall of the fixed sleeve (1). The rotating sleeve (3) is fixedly connected to the protective sleeve assembly (4). The protective sleeve assembly (4) successively includes a connecting portion (41), a protective portion (42), and a fixing portion (43) from top to bottom. The protective portion (42) is sleeved on the outer periphery of the plunger of the suspension cylinder (2). The fixing portion (43) is connected to the steering knuckle (13), and a walking wheel mounting portion (14) is provided on the steering knuckle (13).

2. The air-liquid suspension rotating sheath of a mine car according to claim 1, characterized in that, The longitudinal section of the fixed sleeve (1) is a Z-shaped structure. The bottom of the fixed sleeve (1) is fixedly connected to the suspension cylinder (2) by bolts.

3. A pneumatic-liquid suspension rotating sheath for a mine car according to claim 1, characterized in that, An annular raceway (6) is provided on the outer wall of the fixed sleeve (1). Ball bearings (7) are provided in the raceway (6). Through holes (8) are provided on the rotating sleeve (3) corresponding to the ball bearings (7). The ball bearings (7) are located in the cavity where the through holes (8) communicate with the raceway (6). The pore wall of the through hole (8) is connected to a plug (9), and the plug (9) is in rolling connection with the ball bearings (7).

4. The gas-liquid suspension rotating sheath of a mine car according to claim 3, wherein, A fixing groove (10) is provided on the outer wall of the connecting portion (41), and an annular pipe clamp (11) is provided at the fixing groove (10).

5. The air-liquid suspension rotating sheath of a mine car according to claim 4, characterized in that, A seal (12) is provided at the connection between the fixed sleeve (1) and the rotating sleeve (3).

6. The gas-liquid suspension rotating sheath of a mine car according to claim 5, characterized in that, The fixing portion (43) is connected to the steering knuckle (13) by bolts.

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