Excavator blind area display control device

Abstract

The utility model discloses an excavator blind area display control device which is arranged on the inner side of a machine body shell of an excavator, a cab is arranged on the excavator, a working device is arranged on the side face of the cab, and the working device comprises a first camera device, a second camera device and a third camera device. The first camera device, the second camera device and the third camera device are the same in structure, the first camera device is arranged on the inner side of the machine body shell behind the cab, the third camera device is arranged on the inner side of the machine body shell opposite to the first camera device, and the second camera device is arranged on the inner side of the machine body shell close to the balance weight. According to the utility model, the collision pressure alarm function is realized, and the camera can be telescopically stored to reduce the collision probability.

Description

Technical Field

[0001] The application of the utility model relates to the technical field of excavator accessories, and specifically relates to a blind area display control device for an excavator. Background Art

[0002] Due to the influence of the structural factors of the excavator itself, there are visual blind areas during backward operation and left and right slewing operations. Once a person or an object near the excavator is not discovered in time, it is easy to cause collision accidents and endangerment during backward operation and left and right slewing operations.

[0003] In order to solve the problem of visual blind areas, there is a technical solution using a camera in the prior art. Our company has also previously applied for a patented technology with the application number 202021866832.9, which uses radar to explore the blind area of vision to assist the camera in avoiding danger. However, it is found in the actual use process that the cameras and radars installed on the frame and counterweight housing are easily damaged due to external collisions, affecting the normal working efficiency.

[0004] Therefore, designing a device with collision pressure alarm and the camera can be telescopically retracted to reduce the probability of collision is exactly the problem to be solved by the inventor. Summary of the Utility Model[[ID=I7]]

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a blind area display control device for an excavator, which can realize the functions of having collision pressure alarm and the camera can be telescopically retracted to reduce the probability of collision.

[0006] The technical solution adopted by the device of the utility model is: a blind area display control device for an excavator, which is arranged inside the body shell of the excavator. There is a cab on the excavator, and a working device is arranged on the side of the cab. It includes a first camera device, a second camera device, and a third camera device. The structures of the first camera device, the second camera device, and the third camera device are the same. The first camera device is arranged inside the body shell behind the cab. The third camera device is arranged inside the body shell at a position opposite to the first camera device. The second camera device is arranged inside the body shell near the counterweight.

[0007] The first imaging device includes a mounting frame, which is arranged at the mounting opening formed on the body shell. The rear end of the mounting frame is bolted with a mounting plate. A small hydraulic cylinder is bolted to the end face of the mounting plate. The output end of the small hydraulic cylinder passes through the mounting plate and its end is threadedly connected with a first connecting frame. A connecting plate is slidably arranged inside the mounting frame. A sliding sleeve is arranged on the outer side of the edge of the connecting plate, and the sliding sleeve is slidably matched with the inner side wall of the mounting frame. The middle part of the right end face of the connecting plate is connected with a column, and the end of the column is threadedly connected with a second connecting frame. A pressure sensor is connected between the first connecting frame and the second connecting frame. A transparent protective sleeve is bolted to the left end face of the connecting plate, and a fish-eye camera is arranged inside the transparent protective sleeve and is bolted to the connecting plate.

[0008] Further, the left end opening of the mounting frame is aligned with the mounting opening and has the same size and shape.

[0009] Further, both the mounting frame and the mounting opening are slidably matched with the transparent protective sleeve.

[0010] Further, the small hydraulic cylinder is connected to the hydraulic system of the excavator through a hydraulic pipeline.

[0011] Further, a guiding ring structure is arranged at the edge of the mounting opening.

[0012] Further, the transparent protective sleeve does not contact the inner side wall of the mounting frame.

[0013] Further, when the output end of the small hydraulic cylinder shrinks to the minimum stroke position, the transparent protective cover is completely received inside the mounting opening.

[0014] Further, when the output end of the small hydraulic cylinder extends to the maximum stroke position, the spherical protective cover of the fish-eye camera completely extends outside the mounting opening.

[0015] The beneficial effects of the device of the present utility model are as follows:

[0016] 1. The present utility model adopts a telescopic imaging device. When not in use, the camera is received inside the mounting frame and does not extend out of the mounting opening, which can play an effective protective role. When in use, the imaging device extends outside the mounting opening, and the fish-eye camera obtains external images through the transparent protective sleeve. When the pressure value monitored by the pressure sensor in real time when the transparent protective sleeve is impacted exceeds the critical point, an electric signal is sent to the controller, and an alarm signal is sent through the controller, realizing the functions of having collision pressure alarm and the camera can be telescopically received to reduce the collision probability. Description of the Drawings

[0017] Figure 1 It is the structural view of the present utility model.

[0018] Figure 2 Yes Figure 1 It is a partial enlarged view of part A in Figure 1 .

[0019] Explanation of reference numerals in the drawings: 1 - First camera device; 2 - Second camera device; 3 - Third camera device; 4 - Body housing; 5 - Crawler; 6 - Cab; 7 - Working device; 8 - Installation port; 9 - Mounting bracket; 10 - Mounting plate; 11 - Small hydraulic cylinder; 12 - First connecting bracket; 13 - Pressure sensor; 14 - Second connecting bracket; 15 - Sliding sleeve; 16 - Connecting plate; 17 - Fish-eye camera; 18 - Transparent protective sleeve. Detailed implementation manners

[0020] The following further elaborates the device of the present utility model in combination with specific embodiments. These embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the device of the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

[0021] Embodiment 1: Refer to Figures 1 to 2 It is a structural view of the present utility model Figure 1 and a partial enlarged view of part A in Figure 1 . A blind area display control device for an excavator is provided inside the body housing 4 of the excavator. There is a cab 6 on the excavator, and a working device 7 is provided on the side of the cab 6. It includes a first camera device 1, a second camera device 2, and a third camera device 3. The structures of the first camera device 1, the second camera device 2, and the third camera device 3 are the same. The first camera device 1 is provided inside the body housing 4 behind the cab 6, the third camera device 3 is provided inside the body housing 4 at a position opposite to the first camera device 1, and the second camera device 2 is provided inside the body housing 4 near the counterweight.

[0022] The first imaging device 1 includes a mounting frame 9, and the mounting frame 9 is arranged at the mounting opening 8 formed on the body shell 4. The rear end of the mounting frame 9 is bolted with a mounting plate 10. A small hydraulic cylinder 11 is bolted to the end face of the mounting plate 10. The small hydraulic cylinder 11 is connected to the excavator hydraulic system through a hydraulic pipeline. By controlling the hydraulic system, the operation of the small hydraulic cylinder 11 can be controlled. The output end of the small hydraulic cylinder 11 passes through the mounting plate 10 and is threadedly connected with a first connecting frame 12 at its end. A connecting plate 16 is slidably arranged inside the mounting frame 9. A sliding sleeve 15 is arranged on the outer side of the edge of the connecting plate 16, and the sliding sleeve 15 is slidably matched with the inner side wall of the mounting frame 9. The middle part of the right end face of the connecting plate 16 is connected with a column, and the end of the column is threadedly connected with a second connecting frame 14. A pressure sensor 13 is connected between the first connecting frame 12 and the second connecting frame 14. A transparent protective sleeve 18 is bolted to the left end face of the connecting plate 16. An omnidirectional camera 17 is arranged inside the transparent protective sleeve 18 and is bolted to the connecting plate 16. The structures of the first connecting frame 12 and the second connecting frame 14 are the same, and both include an end plate and a threaded sleeve connected to the end plate. Through the operation of the small hydraulic cylinder 11, the output end can drive the connected pressure sensor 13 and the connecting plate 16 to move axially, so that the connecting plate 16 drives the transparent protective sleeve 18 and the omnidirectional camera 17 to slide axially inside the mounting frame 9. When the small hydraulic cylinder 11 extends, it drives the transparent protective sleeve 18 and the omnidirectional camera 17 to slide outward towards the mounting opening 8. Conversely, when the small hydraulic cylinder 11 contracts, it drives the transparent protective sleeve 18 and the omnidirectional camera 17 to slide inward. When the output end of the small hydraulic cylinder 11 contracts to the minimum stroke position, the transparent protective cover is completely received inside the mounting opening 8. When the output end of the small hydraulic cylinder 11 extends to the maximum stroke position, the spherical protective cover of the omnidirectional camera 17 completely extends outside the mounting opening 8.

[0023] The left end opening of the mounting frame 9 is aligned with the mounting opening 8 and has the same size and shape. A guiding ring structure is arranged at the edge of the mounting opening 8, which is convenient for the transparent protective sleeve 18 to slide along the mounting frame 9 and the mounting opening 8 without being affected by obstacles. The transparent protective sleeve 18 does not contact the inner side wall of the mounting frame 9. Both the mounting frame 9 and the mounting opening 8 are slidably matched with the transparent protective sleeve 18.

[0024] The fisheye camera 17 is electrically connected to the controller of the excavator through a line, the controller is electrically connected to the monitor through a line, and the pressure sensor 13 is electrically connected to the controller through a line. When the pressure on the pressure sensor 13 exceeds a pre-set critical value, a signal will be transmitted to the controller, and the controller will send an alarm signal to the monitor. The alarm information will be displayed on the monitor and a sound alarm will be issued through the monitor's built-in speaker. Before operating the excavator to rotate or reverse, the controller controls the small hydraulic cylinder 11 set on the camera device to extend and extend the camera device out of the mounting port 8. When the staff operates the excavator to rotate or reverse, the controller will control the fisheye camera 17 set in the rotating direction or the reversing direction to start capturing images and transmit the pictures back to the monitor. The fisheye camera 17 that is not in the rotating direction or when not reversing will not work and the signal transmission will be cut off.

[0025] The transparent protective cover 18 is made of transparent hard plastic. Usually, when it collides with external objects, the transparent protective cover 18 contacts the object first. When external force is applied to the transparent protective cover, the pressure sensor 13 detects the pressure value. If it exceeds the critical value, an alarm will be issued, thereby preventing the fisheye camera 17 from colliding with external objects in the first time and damaging the camera, effectively extending the life of the fisheye camera 17. At the same time, the transparent protective cover 18 can also form a shield from the outside of the camera to protect the fisheye camera 17 and reduce the probability of being interfered with by debris. When the camera is not in use, the small hydraulic cylinder 11 can be controlled to retract to store the camera device, thereby improving the protection level of the camera device.

[0026] The present invention adopts a retractable camera device. When not in use, the camera is stored inside the mounting bracket 9 and does not extend out of the mounting opening 8, which can play an effective protective role. When in use, the camera device extends out of the mounting opening 8, and the fisheye camera 17 obtains external images through the transparent protective cover 18. When the transparent protective cover 18 is impacted, the pressure value monitored in real time by the pressure sensor 13 exceeds the critical point and an electrical signal is sent to the controller, which sends an alarm signal through the controller, thereby realizing the function of collision pressure alarm and the camera being retractable and stored to reduce the probability of collision.

Claims

1. A blind area display control device for an excavator, which is arranged inside the body shell (4) of the excavator. The excavator is provided with a cab (6), and a working device (7) is arranged on the side of the cab (6). It is characterized in that: It includes a first camera device (1), a second camera device (2), and a third camera device (3). The structures of the first camera device (1), the second camera device (2), and the third camera device (3) are the same. The first camera device (1) is arranged inside the body shell (4) behind the cab (6). The third camera device (3) is arranged inside the body shell (4) at a position opposite to the first camera device (1). The second camera device (2) is arranged inside the body shell (4) near the counterweight. The first camera device (1) includes a mounting bracket (9). The mounting bracket (9) is arranged at a mounting opening (8) formed on the body shell (4). The rear end of the mounting bracket (9) is bolted to a mounting plate (10). A small hydraulic cylinder (11) is bolted to the end face of the mounting plate (10). The output end of the small hydraulic cylinder (11) passes through the mounting plate (10) and its end is threadedly connected to a first connecting bracket (12). A connecting plate (16) is slidably arranged inside the mounting bracket (9). A sliding sleeve (15) is arranged on the outer edge of the connecting plate (16). The sliding sleeve (15) is in sliding fit with the inner side wall of the mounting bracket (9). A column is connected to the middle of the right end face of the connecting plate (16). The end of the column is threadedly connected to a second connecting bracket (14). A pressure sensor (13) is connected between the first connecting bracket (12) and the second connecting bracket (14). A transparent protective cover (18) is bolted to the left end face of the connecting plate (16). A fish-eye camera (17) is arranged inside the transparent protective cover (18) and is bolted to the connecting plate (16).

2. The blind area display control device for an excavator according to claim 1, characterized in that: The left end opening of the mounting bracket (9) is aligned with the mounting opening (8) and has the same size and shape.

3. The blind area display control device for an excavator according to claim 2, characterized in that: Both the mounting bracket (9) and the mounting opening (8) are in sliding fit with the transparent protective cover (18).

4. The blind area display control device for an excavator according to claim 1, wherein: The small hydraulic cylinder (11) is connected to the hydraulic system of the excavator through a hydraulic pipeline.

5. The blind area display control device for an excavator according to claim 1, characterized in that: A guiding ring structure is arranged at the edge of the mounting opening (8).

6. The blind area display control device for an excavator according to claim 1, wherein: The transparent protective cover (18) does not contact the inner side wall of the mounting bracket (9).

7. The blind area display control device for an excavator according to claim 1, wherein: When the output end of the small hydraulic cylinder (11) contracts to the minimum stroke position, the transparent protective cover is completely received inside the mounting opening (8).

8. The blind area display control device for an excavator according to claim 1, wherein: When the output end of the small hydraulic cylinder (11) extends to the maximum stroke position, the spherical protective cover of the fish-eye camera (17) completely extends outside the mounting opening (8).

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