Large-angle hood opening and closing mechanism and electric loader

Abstract

The large-angle hood opening and closing mechanism comprises a frame, a hood and a jacking oil cylinder used for jacking the hood, the bottom of the jacking oil cylinder is hinged to the top of a forward moving seat, and the telescopic end of the jacking oil cylinder is hinged to the top of the hood; by arranging the forward moving mechanism, large-angle hood opening and closing can be achieved by using an oil cylinder with a relatively small stroke in a small space, people can conveniently adjust the opening and closing angle of the hood, and maintenance and repair of an engine are completed.

Description

Technical Field

[0001] This utility model relates to the field of loader technology, and in particular to a large-angle hood opening and closing mechanism and an electric loader. Background Technology

[0002] A loader hood is a device mounted on the chassis to protect the engine. When performing engine maintenance and repairs, the hood needs to be opened. Because the loader hood is large and heavy, a power unit (cylinder or hydraulic cylinder, etc.) is used to lift it when it's open. However, currently, the angle at which the hood is lifted is relatively small, only convenient for viewing and not for proper engine maintenance and repair. Increasing the opening and closing angle of the hood would require increasing the stroke length of the power unit, which would increase its size and make it inconvenient to install on the chassis. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a large-angle hood opening and closing mechanism and an electric loader, so that the hood can be opened and closed at a large angle when the engine of the loader is being maintained.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a large-angle engine hood opening and closing mechanism, including a frame and an engine hood, and a lifting cylinder for lifting the engine hood. The bottom of the lifting cylinder is hinged to the top of the forward moving seat, and the telescopic end of the lifting cylinder is hinged to the top of the engine hood. The frame is also provided with a forward moving mechanism that cooperates with the lifting cylinder to drive the bottom of the lifting cylinder to move back and forth along the frame. It also includes a controller, which is installed in the driver's cab. The lifting cylinder and the forward moving motor are connected to the controller. The opening and closing angle range of the engine hood is 0~120°.

[0006] The forward movement mechanism includes a forward movement seat and a forward movement guide rail fixed to the vehicle frame. The bottom of the forward movement seat is slidably connected to the forward movement guide rail. The forward movement guide rail includes two rails, and a forward movement screw is provided between the two rails. A forward movement motor is provided at one end of the forward movement guide rail, and a fixed seat is provided at the other end. The fixed seat and the forward movement motor are fixed to the vehicle frame. One end of the forward movement screw is fixedly connected to the power output end of the forward movement motor, and the other end is rotatably connected to the forward movement seat. The forward movement screw passes through the forward movement seat and is threadedly connected to the forward movement seat. When the forward movement motor drives the forward movement screw to rotate, it drives the forward movement seat to move along the forward movement guide rail between the forward movement motor and the fixed seat.

[0007] The beneficial effects of this utility model are as follows:

[0008] This invention, by setting a forward-moving mechanism, allows for the opening and closing of the engine hood at a relatively large angle using a hydraulic cylinder with a relatively small stroke within a small space. This makes it convenient for people to adjust the opening and closing angle of the engine hood and complete the maintenance and repair of the engine. Attached Figure Description

[0009] Figure 1 This is a side view of an electric loader provided in a specific embodiment of this utility model;

[0010] Figure 2 This is a structural schematic diagram of the frame portion of the vehicle frame with the hood closed, provided in a specific embodiment of this utility model.

[0011] Figure 3 This is a schematic diagram of the frame section hood when it is opened to 90° according to a specific embodiment of the present utility model.

[0012] Figure 4 This is a schematic diagram of the frame section hood when it is opened to 90°, provided in a specific embodiment of this utility model;

[0013] Figure 5 yes Figure 4 Enlarged diagram of A in the middle;

[0014] In the picture:

[0015] 1. Chassis; 2. Engine hood; 3. Lifting cylinder;

[0016] 4. Forward movement mechanism; 41. Forward movement seat; 42. Forward movement guide rail; 43. Forward movement lead screw; 44. Forward movement motor; 45. Fixed seat. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] As shown in the figure, this utility model provides a large-angle engine hood opening and closing mechanism, including a frame 1 and an engine hood 2, and a lifting cylinder 3 for lifting the engine hood 2. The frame 1 is also equipped with a forward-moving mechanism 4 that cooperates with the lifting cylinder 3 to drive the bottom of the lifting cylinder 3 to move back and forth along the frame 1. Compared to using a longer-stroke cylinder or other lifting structures, by using the forward-moving mechanism 4, the lifting cylinder 3 can move back and forth, allowing it to lift the engine hood 2 more efficiently and energy-savingly. Furthermore, it improves the stability of the entire lifting structure when lifting the engine hood 2 at different angles. Otherwise, if the lifting cylinder 3 were directly placed near the frame 1... At the rear, although it can be directly extended to a larger angle, it is very difficult to lift it initially, and the lifting process places high demands on the hydraulic cylinder and the structure is unstable; furthermore, the opening and closing angle range of the engine cover 2 is 0~120°; specifically: the forward movement mechanism 4 includes a forward movement seat 41 and a forward movement guide rail 42 fixed on the frame 1. The bottom of the forward movement seat 41 and the forward movement guide rail 42 are slidably connected. The forward movement guide rail 42 includes two rails, and a forward movement screw 43 is provided between the two rails. A forward movement motor 44 is provided at one end of the forward movement guide rail 42, and a fixed seat 45 is provided at the other end. The fixed seat 45 and the forward movement motor 44 are fixed on the frame 1. One end of the forward movement screw 43 is connected to the forward movement motor 44. The power output end of the motor 44 is fixedly connected, and the other end is rotatably connected to the forward moving seat 41. The forward moving screw 43 passes through the forward moving seat 41 and is threadedly connected to the forward moving seat 41. When the forward moving motor 44 drives the forward moving screw 43 to rotate, it drives the forward moving seat 41 to move along the forward moving guide rail 42 between the forward moving motor 44 and the fixed seat 45. At the same time, the bottom of the lifting cylinder 3 is hinged to the top of the forward moving seat 41, and the telescopic end of the lifting cylinder 3 is hinged to the top of the machine cover 2. The motor also includes a controller, which is installed inside the driver's cab. The lifting cylinder 3 and the forward moving motor 44 are connected to the controller. The forward moving seat 41 is initially located on the forward moving guide rail 42 near the end of the forward moving motor 44, so that when needed... When the engine cover is opened, the telescopic rod of the lifting cylinder 3 is extended from the control panel in the cab (not shown in the figure), and the engine cover 2 is lifted to a certain angle. Then, the forward motor 44 drives the forward lead screw 43 to rotate, which causes the forward seat 41 to move along the forward guide rail 42 from the forward motor 44 to the fixed seat 45. This allows the engine cover 2 to be opened to a larger angle. When closing the engine cover 2, the forward motor 44 first drives the forward seat 41 from the fixed seat 45 and then back to be close to the forward motor 44. The telescopic rod of the lifting cylinder 3 then retracts to complete the closing of the engine cover 2. In this way, the engine cover 2 can be opened and closed at a large angle using a cylinder with a small stroke in a small space.

[0019] An electric loader employs a large-angle hood opening and closing mechanism as described above.

[0020] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A large-angle engine hood opening and closing mechanism, comprising a frame (1) and an engine hood (2), and a lifting cylinder (3) for lifting the engine hood (2), characterized in that: The frame (1) is also provided with a forward movement mechanism (4) that cooperates with the lifting cylinder (3) to drive the bottom of the lifting cylinder (3) to move back and forth along the frame (1).

2. The large-angle machine cover opening and closing mechanism according to claim 1, characterized in that: The forward movement mechanism (4) includes a forward movement seat (41) and a forward movement guide rail (42) fixed on the frame (1). The bottom of the forward movement seat (41) and the forward movement guide rail (42) are slidably connected. The forward movement guide rail (42) includes two rails, and a forward movement screw (43) is provided between the two rails. A forward movement motor (44) is provided at one end of the forward movement guide rail (42), and a fixed seat (45) is provided at the other end. The fixed seat (45) and the forward movement motor (44) are fixed on the frame (1). One end of the forward lead screw (43) is fixedly connected to the power output end of the forward motor (44), and the other end is rotatably connected to the forward seat (41). The forward lead screw (43) passes through the forward seat (41), and the forward lead screw (43) and the forward seat (41) are threadedly connected. When the forward motor (44) drives the forward lead screw (43) to rotate, it drives the forward seat (41) to move along the forward guide rail (42) between the forward motor (44) and the fixed seat (45).

3. The large-angle hood opening and closing mechanism according to claim 2, characterized in that: The bottom of the lifting cylinder (3) is hinged to the top of the forward moving seat (41), and the telescopic end of the lifting cylinder (3) is hinged to the top of the machine cover (2).

4. The large-angle machine cover opening and closing mechanism according to claim 3, characterized in that: The opening and closing angle range of the cover (2) is 0~120°.

5. The large-angle hood opening and closing mechanism according to claim 3, characterized in that: It also includes a controller, which is located in the driver's cab, and the lifting cylinder (3) and the forward moving motor (44) are connected to the controller.

6. An electric loader, characterized in that: The large-angle hood opening and closing mechanism as described in any one of claims 1 to 5 is adopted.

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