A kind of limited hood hinge

Abstract

The present invention provides a limitable hood hinge, including a hinge, a pin sleeve, a baffle, a limit pin, a pin shaft II, an upper base plate, a pin shaft I, and a lower base plate, characterized in that: the limit pin is fixed on the baffle to form a baffle assembly; one end of the hinge is fixed to the pin sleeve to form a hinge assembly; the pin shaft II is fixed on the upper base plate; the baffle is installed on the pin shaft II by sliding; the hinge assembly is installed between the upper base plate and the lower base plate by sliding the pin shaft I. By adopting the above structure, the present invention can effectively limit the opening and closing angle of the hood, avoid damage caused by excessive opening and closing angles of the hinge, and increase the service life of the hinge, thereby further improving the product quality and reliability of the excavator.

Description

Technical Field

[0001] The invention relates to a limitable hood hinge, in particular to a hinge used for a hood of a mini excavator. Background Art

[0002] Due to the limited construction space, mini excavators require the hood to be more convenient, flexible, safe and practical to open and close. At present, the hood hinges of mini excavators on the market generally follow the hinges of ordinary hydraulic excavators. Most of the hinges are flat structures with a large opening range. The side door is easy to touch the engine hood, causing damage to the hinge. Therefore, it is particularly important to invent a new type of hood hinge. Summary of the invention

[0003] In order to limit the opening and closing range of the hood hinge and avoid the side door from touching the engine hood, causing early damage to the hinge and potential safety hazards, the present invention proposes a limitable hinge for the hood of a micro excavator, and the specific design scheme is as follows: a limitable hood hinge, including a hinge, a pin sleeve, a baffle, a limit pin, a pin shaft II, an upper base plate, a pin shaft I, and a lower base plate, characterized in that: the limit pin is fixed on the baffle to form a baffle joint; one end of the hinge is fixed to the pin sleeve to form a hinge joint; the pin shaft II is fixed on the upper base plate; the baffle is installed on the pin shaft II by sliding; the hinge joint is installed between the upper base plate and the lower base plate by sliding the pin shaft I.

[0004] The width of the front end bent portion of the hinge assembly exceeds the width between the upper base plate and the lower base plate.

[0005] The middle curved portion of the hinge is provided with a sunken opening groove.

[0006] A limiting pin is fixed in the middle of the baffle assembly.

[0007] The present invention can effectively limit the opening and closing angle of the hood by adopting the above structure, avoid damage caused by excessive opening and closing angle of the hinge, increase the service life of the hinge, and further improve the product quality and reliability of the excavator. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attached Figure 1 Schematic diagram of the structure of the limitable hood hinge

[0009] Figure 1 Middle: 1 hinge, 2 baffle, 3 limit pin, 4 pin shaft II, 5 upper base plate, 6 pin shaft I, 7 pin sleeve, 8 lower base plate. DETAILED DESCRIPTION

[0010] The hinge of the present invention is further described in detail below in conjunction with the preferred example described in the schematic diagram of the limitable hood hinge structure in the attached drawings. It includes an upper base plate 5 and a lower base plate 8 and a baffle plate 2 in the baffle plate assembly, each of which includes a substantially rectangular steel plate, and the steel plate material can be 45# steel. The hinge assembly can rotate relative to the upper base plate 5, the lower base plate 8 and the baffle plate assembly around the pin shaft Ⅰ6; wherein the upper end surface height of the connection between the hinge 1 and the pin sleeve 7 is located below the lower plane of the upper base plate 5, and the lower end surface height is flush with the lower plane of the lower base plate 8, and the width of the front end bending part of the hinge assembly exceeds the width between the upper base plate 5 and the lower base plate 8, thereby preventing the hinge 1 from rotating excessively. The pin shaft II 4 is fixed on the upper base plate 5, and the upper base plate 5 and the lower base plate 8 are respectively fixed on the cab bracket; the baffle 2 and the limit pin 3 form a baffle assembly, wherein the installation position of the limit pin 3 also serves as a limit and stop function to prevent the baffle 2 from excessive rotation; the hinge assembly is slidably installed between the upper base plate 5 and the lower base plate 8 through the pin shaft I 6, and the front end of the hinge assembly is fixed together with the engine hood, and the middle curved part of the hinge 1 is provided with a sunken opening groove. When the hood is opened, the baffle 2 in the baffle assembly falls into the opening groove of the hinge 1 by its own weight to limit the hinge assembly from continuing to rotate, thereby ensuring the opening and closing angle of the hood and the limit function; when the baffle welding assembly is lifted, the limit function of the hinge assembly is released, and the hood can be quickly closed and opened, thereby improving the safety performance and practicality of the hinge.

[0011] The detailed description and technical contents of the present invention are combined with the accompanying drawings to illustrate the limitable hood hinge structure. The accompanying drawings are only provided for reference and explanation and are not used to limit the present invention.

[0012] The above description is only a preferred specific implementation method of the patent of the present invention, but the protection scope of the patent of the present invention is not limited thereto, and is not used to limit the patent scope of the present invention. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope of the patent of the present invention. Other equivalent changes that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

Claims

1. A limitable hood hinge, comprising a hinge, a pin sleeve, a baffle, a limit pin, a pin shaft II, an upper base plate, a pin shaft I, and a lower base plate, characterized in that: The limit pin is fixed on the baffle to form a baffle assembly; one end of the hinge is fixed to the pin sleeve to form a hinge assembly; the pin shaft II is fixed on the upper base plate; the baffle is installed on the pin shaft II by sliding, and the middle curved part of the hinge is provided with a sunken opening groove; the hinge assembly is installed between the upper base plate and the lower base plate by sliding the pin shaft I.

2. The positionable hood hinge according to claim 1, characterized in that: The width of the front end bent portion of the hinge assembly exceeds the width between the upper base plate and the lower base plate.

3. The positionable hood hinge according to claim 1, characterized in that: A limiting pin is fixed in the middle of the baffle assembly.

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