Pull arm oil cylinder structure of hook arm vehicle

Abstract

The utility model provides a draw arm oil cylinder structure of a hook arm vehicle, which comprises a cylinder body sleeved on the hook arm vehicle, a piston rod movably sleeved in the cylinder body and an oil pipe arranged on the outer side of the cylinder body, and a first fixing block and a second fixing block which are symmetrically distributed are arranged on the outer side of the cylinder body. A guide rod is fixedly sleeved with the first fixing block and the second fixing block jointly, a heating mechanism located below the oil pipe is arranged on the outer side of the cylinder body, and the outer side of the guide rod is movably sleeved with a protective sleeve located on the outer side of the cylinder body. According to the pull arm oil cylinder structure of the hook arm vehicle, through cooperative use of the fixing disc and the clamping block, when the piston rod moves, the protective sleeve can be driven to synchronously move in the axial direction of the guide rod, then the piston rod can be shielded and protected through the protective sleeve, meanwhile, the piston rod is prevented from being collided, dents are not likely to appear on the surface of the piston rod, and the service life of the piston rod is prolonged. The abrasion speed of the sealing assembly is reduced, and the service life of the pull arm oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hook-arm trucks, and specifically discloses a pull-arm oil cylinder structure of a hook-arm truck. Background Art

[0002] The existing arm-pulling cylinder installed on the hook-arm truck lacks protection. After the piston rod is hit, dents are easily formed on its surface, which will accelerate the wear of the sealing component and reduce the service life of the arm-pulling cylinder. In addition, when the hook-arm truck is operating in winter, the hydraulic oil temperature is low and its fluidity is poor, which makes the response speed of the arm-pulling cylinder slow. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a hook arm oil cylinder structure for a hook arm truck, comprising a cylinder body mounted on the hook arm truck, a piston rod movably mounted inside the cylinder body, and an oil pipe arranged on the outside of the cylinder body, the outside of the cylinder body is provided with a first fixed block and a second fixed block symmetrically distributed, the insides of the first fixed block and the second fixed block are commonly fixedly mounted with a guide rod, the outside of the cylinder body is provided with a heating mechanism located under the oil pipe, the outer side of the guide rod is movably sleeved with a protective sleeve located on the outside of the cylinder body, the outer side of one end of the piston rod is fixedly sleeved with a fixed plate located on the outside of the cylinder body, and the inner side of one side of the protective sleeve is fixedly installed with a clamping block clamped on the outside of the fixed plate.

[0004] Preferably, the heating mechanism includes a first fixing column and a second fixing column arranged on the outside of the cylinder body, and the outer sides of the first fixing column and the second fixing column are jointly sleeved with an arc-shaped electric heating plate adapted to the cylinder body, and the outer sides of the ends of the first fixing column and the second fixing column extending out of the outside of the arc-shaped electric heating plate are both threadedly sleeved with nuts.

[0005] Preferably, a limiting groove adapted to the fixing plate is provided on the inner side of the clamping block.

[0006] Preferably, the axes of the cylinder body and the protective sleeve are collinear. Beneficial Effects

[0007] 1. The arm-pulling cylinder structure of the hook-arm vehicle, through the coordinated use of the fixed plate and the clamping block, can drive the protective sleeve to move synchronously along the axial direction of the guide rod when the piston rod moves, and then the protective sleeve can shield and protect the piston rod while preventing the piston rod from being collided, so that the surface of the piston rod is not easy to be dented, the wear speed of the sealing component is reduced, and the service life of the arm-pulling cylinder is increased.

[0008] 2. The arm cylinder structure of the hook-arm truck can heat the cylinder body by energizing the arc-shaped electric heating plate, and at the same time, can heat the hydraulic oil inside the cylinder body through heat exchange, thereby reducing the preheating time of the arm cylinder and improving the fluidity of the hydraulic oil, so that the arm cylinder can respond quickly when the hook-arm truck is operating in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0010] Figure 1 It is a partial cross-sectional view of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the structure of the utility model;

[0012] Figure 3 for Figure 1 Schematic diagram of piston rod extension;

[0013] Figure 4 It is a partial schematic diagram of the structure of the utility model;

[0014] Figure 5 It is a schematic diagram of the card block of the utility model;

[0015] Figure 6 It is the installation schematic diagram of the utility model structure.

[0016] In the figure: 1. cylinder body; 2. piston rod; 3. oil pipe; 4. first fixed block; 5. second fixed block; 6. guide rod; 7. heating mechanism; 71. first fixed column; 72. second fixed column; 73. arc-shaped electric heating plate; 74. nut; 8. protective cover; 9. fixed plate; 10. clamping block; 11. limit groove. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0018] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0019] See also Figure 1-6A hook arm oil cylinder structure of a hook arm vehicle comprises a cylinder body 1 sleeved on the hook arm vehicle, a piston rod 2 movably sleeved inside the cylinder body 1 and an oil pipe 3 arranged on the outside of the cylinder body 1, a first fixed block 4 and a second fixed block 5 symmetrically distributed are arranged on the outside of the cylinder body 1, and a guide rod 6 is fixedly sleeved inside the first fixed block 4 and the second fixed block 5, through which a protective sleeve 8 can be limited and guided so that the protective sleeve 8 can move along the axial direction of the guide rod 6, and the piston rod 2 and a heating mechanism 7 can be shielded and protected by the protective sleeve 8 to prevent the surface of the piston rod 2 from being collided, a heating mechanism 7 located below the oil pipe 3 is arranged on the outside of the cylinder body 1, the outer side of the guide rod 6 is movably sleeved with a protective sleeve 8 located on the outside of the cylinder body 1, the outer side of one end of the piston rod 2 is fixedly sleeved with a fixed disk 9 located on the outside of the cylinder body 1, and a clamping block 10 clamped on the outside of the fixed disk 9 is fixedly installed on the inner side of one side of the protective sleeve 8.

[0020] Among them, the heating mechanism 7 includes a first fixing column 71 and a second fixing column 72 arranged on the outside of the cylinder body 1, and the outer sides of the first fixing column 71 and the second fixing column 72 are jointly covered with an arc-shaped electric heating plate 73 adapted to the cylinder body 1, and the outer sides of the first fixing column 71 and the second fixing column 72 extending out of the outside of the arc-shaped electric heating plate 73 are both threadedly sleeved with nuts 74. Through the coordinated use of the first fixing column 71 and the second fixing column 72, the inner side of the arc-shaped electric heating plate 73 can be tightly attached to the outer wall surface of the cylinder body 1 after the nuts 74 are tightened, thereby ensuring that the heat generated by the arc-shaped electric heating plate 73 after power is turned on can be promptly transmitted to the cylinder body 1, thereby preheating the hydraulic oil inside the cylinder body 1 through the cylinder body 1, so that the arm cylinder can respond quickly when used in winter.

[0021] Among them, a limiting groove 11 adapted to the fixed plate 9 is opened on the inner side of the clamping block 10. The limiting groove 11 allows the piston rod 2 to rotate normally around its own axis, so as to facilitate the installation of the piston rod 2, and the local rotation of the piston rod 2 will not affect the movement of the protective sleeve 8, ensuring that the protective sleeve 8 can move synchronously with the piston rod 2 through the fixed plate 9.

[0022] Among them, the axes of the cylinder body 1 and the protective sleeve 8 are collinear. By arranging the axes of the cylinder body 1 and the protective sleeve 8 collinearly, the piston rod 2 can drive the protective sleeve 8 to move stably along the axial direction of the guide rod 6 through the fixed plate 9 and the block 10 during the movement, and the protective sleeve 8 is subjected to a relatively uniform force during the movement, and it is not easy to get stuck. At the same time, the friction between the guide rod 6 and the protective sleeve 8 can be reduced, thereby reducing the resistance of the protective sleeve 8 to the piston rod 2.

[0023] When the arm pulling cylinder is working, the hydraulic oil is transported to the inside of the cylinder body 1 through the oil pipe 3, and the piston rod 2 is pushed out by the pressure generated by the hydraulic oil. While the piston rod 2 moves, the protective sleeve 8 is driven to move synchronously along the axial direction of the guide rod 6 through the fixed plate 9 and the block 10. When the hook arm vehicle is used in winter, the hydraulic oil inside the cylinder body 1 can be preheated by energizing the arc-shaped electric heating plate 73 to improve the fluidity of the hydraulic oil, so that the arm pulling cylinder can respond quickly when driven in winter. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A hook arm hydraulic cylinder structure for a hook arm vehicle, comprising a cylinder body (1) sleeved on the hook arm vehicle, a piston rod (2) movably sleeved inside the cylinder body (1), and an oil pipe (3) arranged outside the cylinder body (1), characterized in that: The outer side of the cylinder body (1) is provided with a symmetrically distributed first fixing block (4) and a second fixing block (5); the first fixing block (4) and the second fixing block (5) are internally fixedly sleeved with a guide rod (6); the outer side of the cylinder body (1) is provided with a heating mechanism (7) located below the oil pipe (3); the outer side of the guide rod (6) is movably sleeved with a protective sleeve (8) located outside the cylinder body (1); the outer side of one end of the piston rod (2) is fixedly sleeved with a fixing plate (9) located outside the cylinder body (1); and a clamping block (10) clamped on the outer side of the fixing plate (9) is fixedly installed on the inner side of one side of the protective sleeve (8).

2. The arm-pulling cylinder structure of a hook-arm truck according to claim 1, characterized in that: The heating mechanism (7) comprises a first fixing column (71) and a second fixing column (72) which are arranged on the outside of the cylinder body (1); the outsides of the first fixing column (71) and the second fixing column (72) are jointly sleeved with an arc-shaped electric heating plate (73) which is compatible with the cylinder body (1); and the outsides of the first fixing column (71) and the second fixing column (72) which extend out of the outside of the arc-shaped electric heating plate (73) are both threadedly sleeved with nuts (74).

3. The arm-pulling cylinder structure of a hook-arm truck according to claim 1, characterized in that: A limiting groove (11) adapted to the fixing plate (9) is provided on the inner side of the clamping block (10).

4. The arm-pulling cylinder structure of a hook-arm truck according to claim 1, characterized in that: The axes of the cylinder body (1) and the protective sleeve (8) are collinear.

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