Turnover moving device for front windshield of excavator cab

Abstract

The utility model relates to an excavator cab front windshield overturning and moving device, which adopts the following technical scheme that the excavator cab front windshield overturning and moving device comprises a vehicle body, a front moving window frame, a front moving window, a front moving window rocker arm and a gas spring, the front moving window frame is fixed on the front side of the vehicle body through the front moving window rocker arm and is movably connected with the vehicle body; the front movable window rocker arm is connected with a vehicle body through the gas spring, the elastic force value of the gas spring is 450-550 N, the included angle between the gas spring and the ground is 45-55 degrees, and the front movable window is installed in the front movable window frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the vehicle body of engineering machinery, and particularly relates to a front windshield turnover device of an excavator cab. BACKGROUND

[0002] In the original design of the front windshield, two gas springs are provided as support and buffer devices. However, this configuration has exposed some problems in actual use: when the driver tries to open the front windshield, the two gas springs are located at the position close to the door side, occupying part of the space for entering and exiting the cab. In this way, not only the convenience and comfort of the driver when getting on and off the vehicle are affected, but also the rapid departure from the vehicle in an emergency situation may be hindered. Therefore, considering the user experience and safety factors, it is recommended to re-evaluate and optimize the design scheme. SUMMARY

[0003] In view of the problem that the driver is not convenient to enter and exit the cab when the front windshield in the original design is opened, the utility model innovatively puts forward a front windshield turnover device of an excavator cab. The device optimizes and adjusts the structural layout of the front windshield, cancels the gas spring configuration at the door side, and only retains the gas spring on the other side. This improvement not only retains the original functional characteristics of the front windshield, but also effectively solves the problem of space occupation caused by improper position of the gas spring, thereby significantly improving the convenience and comfort of the driver entering and exiting the cab.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The front windshield turnover device of the excavator cab comprises a vehicle body, a front movable window frame, a front movable window, a front movable window rocker arm and a gas spring. The front movable window frame is fixed on the front side of the vehicle body through the front movable window rocker arm and is movably connected with the vehicle body. The front movable window rocker arm is connected with the vehicle body through the gas spring. The spring value of the gas spring is 450N-550N. The included angle between the gas spring and the ground is between 45° and 55°. The front movable window is installed in the front movable window frame.

[0006] Preferably, the spring value of the gas spring is 500N, and the included angle between the gas spring and the ground is 50°.

[0007] Preferably, the vehicle body near the two sides of the front movable window frame is respectively provided with a track.

[0008] Preferably, the front windshield nylon pulley is sleeved on the bottom of the front movable window frame on both sides, and the front windshield nylon pulley slides along the track.

[0009] Preferably, a front windshield middle cross beam is fixed on the bottom of the front movable window frame.

[0010] Preferably, the middle part of the front movable window frame is respectively provided with a right front wind lock and a left front wind lock.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model discloses a front wind window structure and arrangement, which cancels the gas spring configuration at the side of the door and only retains the gas spring at the other side by careful optimization and adjustment of the structure and arrangement of the front wind window. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the structural explosion schematic diagram of the utility model;

[0015] Figure 3 It is the closed state schematic diagram of the utility model;

[0016] Figure 4 It is the open state schematic diagram of the utility model;

[0017] As shown in the figure: 1, vehicle body;2, front movable window frame;3, front movable window;4, front wind middle cross beam strip;5, front wind nylon pulley;6, right front wind lock;7, left front wind lock;8, track;9, front movable window rocker arm;10, gas spring. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0019] As Figures 1-4The front windshield turnover device of the excavator cab comprises a vehicle body 1, a front movable window frame 2, a front movable window 3, a front windshield middle beam 4, a front windshield nylon pulley 5, a right front windshield lock 6, a left front windshield lock 7, a track 8, a front movable window rocker arm 9 and a gas spring 10. The front movable window 3 is installed in the front movable window frame 2. One end of the front movable window rocker arm 9 is connected with the vehicle body 1, and the other end is connected with the front movable window frame 2, thereby providing a movable support point for the front movable window frame 2, so that the front movable window frame 2 can perform turnover movement around the connection point, thereby realizing the opening and closing functions of the front movable window 3. The gas spring 10 is arranged between the front movable window rocker arm 9 and the vehicle body 1. The gas spring 10 plays a key role in assisting and buffering in the entire front windshield turnover device. The elastic force range of the gas spring 10 is 450N-550N, and the optimal elastic force value is 500N. The elastic force value is set through accurate calculation and practical verification, which can not only ensure the smooth turnover of the front movable window, but also reduce the operating force of the operator. The included angle between the gas spring 10 and the ground is between 45° and 55°, and the optimal angle is 50°. Such an angle setting can make the gas spring 10 better play its role in the working process, provide stable support force and assistance for the turnover of the front movable window 3, and effectively control the speed and position of the turnover of the front movable window 3, so that the entire turnover process is more stable and smooth.

[0020] On both sides of the vehicle body 1 corresponding to the positions of the front movable window frame 2, inclined tracks 8 are arranged respectively, which are designed to ensure that the front movable window frame 2 can move up and down stably along a specific path during the turnover process. The bottom of the front movable window frame 2 is provided with protruding shafts, and the front windshield nylon pulleys 5 are sleeved on the shafts. The front windshield nylon pulleys 5 are located in the tracks 8 and move up and down along the tracks 8, which not only reduces the frictional resistance between the front movable window frame 2 and the tracks 8, but also makes the movement of the front movable window frame 2 more flexible and easy, and can also bear the weight and various forces generated during the movement of the front movable window frame 2, thereby ensuring the stability and reliability of the entire turnover process.

[0021] The front movable window frame 2 is fixedly installed with the front windshield middle beam 4 at the bottom. The front windshield middle beam 4 not only serves as a connection and support, but also can effectively disperse the pressure borne by the front movable window and uniformly transmit the pressure to each part of the front movable window frame, thereby enhancing the structural strength and stability of the entire front movable window frame.

[0022] The middle part of the front movable window frame 2 is respectively provided with a right front wind lock 6 and a left front wind lock 7. The important components are to ensure the safety and stability of the front movable window 3 in the closed state. When the front movable window 3 needs to be closed, the operator can tightly lock the front movable window frame 2 with the vehicle body 1 by operating the right front wind lock 6 and the left front wind lock 7, so as to prevent the front movable window 3 from being accidentally opened during the excavator operation, thereby ensuring the safety of the driver.

[0023] Working principle:

[0024] Firstly, the front movable window is accurately assembled into the front movable window frame, so as to be tightly combined with the frame. Then, the front movable window frame is stably assembled into the cab body together with the front movable window by means of the front movable window rocker arm. Then, the front wind nylon pulley at the lower side of the front movable window frame is accurately installed in the track, so as to ensure that the pulley is tightly matched with the track and can smoothly slide. Subsequently, the installation work of the gas spring is carried out at the right side of the front movable window, the upper half of the gas spring is stably installed on the front movable window rocker arm, and the lower half is stably installed on the cab body. Finally, the right front wind lock and the left front wind lock are installed, and the overall hardware assembly is completed. After the assembly is completed, the installation position of the gas spring is repeatedly tested for many times, and the opening angle and pressure thereof are carefully adjusted, and finally it is concluded that when the pressure of the gas spring is about 500N, and the angle with the ground is about 50°, the running effect of the whole device is relatively ideal.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A device for tilting and turning the windshield of an excavator cab, characterized in that, The device includes a vehicle body, a front movable window frame, a front movable window, a front movable window rocker arm, and a gas spring. The front movable window frame is fixed to the front side of the vehicle body via the front movable window rocker arm and is movably connected to the vehicle body. The front movable window rocker arm is connected to the vehicle body via a gas spring. The spring force of the gas spring is 450N-550N, and the angle between the gas spring and the ground is between 45°-55°. The front movable window is installed inside the front movable window frame.

2. The excavator cab windshield tilting device according to claim 1, characterized in that, The air spring has a spring force of 500N and the angle between the air spring and the ground is 50°.

3. The excavator cab windshield tilting device according to claim 1, characterized in that, The vehicle body is equipped with rails on both sides near the front movable window frame.

4. The excavator cab windshield tilting device according to claim 3, characterized in that, The front movable window frame is fitted with front windshield nylon pulleys on both sides of its bottom, and the front windshield nylon pulleys slide along the track.

5. The excavator cab windshield tilting device according to claim 1 or 3, characterized in that, The bottom of the front movable window frame is fixed with a front windshield crossbeam.

6. The excavator cab windshield tilting device according to claim 1, characterized in that, The middle section of the front movable window frame is equipped with a right front windshield lock and a left front windshield lock.

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