CN108951749B - Video monitoring system for walking rear part of rotary operation machine - Google Patents
Video monitoring system for walking rear part of rotary operation machine Download PDFInfo
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- CN108951749B CN108951749B CN201810710773.7A CN201810710773A CN108951749B CN 108951749 B CN108951749 B CN 108951749B CN 201810710773 A CN201810710773 A CN 201810710773A CN 108951749 B CN108951749 B CN 108951749B
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- chassis
- vehicle body
- conductive
- monitor
- upper vehicle
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/24—Safety devices, e.g. for preventing overload
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
Abstract
The invention relates to monitoring of an excavator, aiming at solving the problem of a visual blind area of a driver behind the excavator; the video monitoring system comprises a chassis, an upper vehicle body, a monitor, a camera and a chassis advancing direction detection device, wherein the lower part of the chassis is used for walking; and an upper body orientation detection device which is used for detecting whether the orientation of the upper body is consistent with that of the chassis and is connected with the monitor, wherein when the actual direction of the machine is towards the rear of the upper body, the monitor displays the image transmitted by the camera. The video monitoring system for the rear walking of the rotary working machine only needs to display the video of the rear area of the upper vehicle body of the machine on the monitor when the machine walks towards the rear of the upper vehicle body, so that an operator can observe the visual blind area of the upper vehicle body conveniently, and the operation safety of the machine is improved.
Description
Technical Field
The invention relates to a rotary working machine, in particular to a video monitoring system behind the walking of the rotary working machine.
Background
For large machines, the driver is often not able to see the area behind the machine due to poor visibility at the rear of the machine. In order to improve the safety of the machine operation, it is common to configure the installation of a rear video surveillance system. The conventional rear video monitoring system comprises a monitor installed in a cab, a camera installed at the rear part of a machine and connected with the monitor, and a walking direction detection device connected with the monitor and used for detecting whether a vehicle walks backwards or not, wherein when the walking direction detection device detects that the machine walks backwards, the monitor displays a picture shot by the camera so that a driver can observe an area behind the machine, and the driving and operation safety is improved. When the machine moves forward, the picture shot by the camera is not displayed, and other working parameters of the machine and the like are displayed.
The large excavator also has the problem of rear vision blind areas, and a rear video monitoring system is usually installed on the large excavator, wherein a camera is installed on an upper body of the excavator, and a walking direction detection device is used for detecting the advancing direction of an excavator chassis. But the upper body and the chassis of the excavator can rotate relatively at any angle. When the front direction of the upper vehicle body (the front direction of the cab) is consistent with the rear direction of the chassis, the forward direction of the chassis is the rear direction of the cab, the backward direction of the chassis is the front direction of the cab, and if the chassis moves forward, the forward direction of the chassis is a visual blind area of a driver but is not displayed on a monitor; when the chassis moves towards the backward direction, the backward direction of the chassis is the visual field area of the driver, and is not required to be displayed on the monitor, but at the moment, the visual field area image of the driver is displayed on the monitor by displaying on the monitor, and other working parameters of the machine cannot be displayed on the monitor, so that the operation and the use of the machine by the driver are influenced.
Disclosure of Invention
The invention provides a video monitoring system for the rear walking of a rotary working machine, which can correctly display images of visual blind areas of drivers in a cab on a monitor, aiming at solving the problem that the existing video monitoring system for the rear of the rotary working machine cannot correctly display the visual blind areas of the drivers in the cab when the orientation of an upper vehicle body is inconsistent with the orientation of a chassis.
The technical scheme for realizing the purpose of the invention is as follows: the video monitoring system comprises a chassis, an upper vehicle body, a monitor, a camera and a chassis advancing direction detection device, wherein the lower part of the chassis is used for walking; the monitoring system is characterized by further comprising an upper body orientation detection device which is used for detecting whether the orientation of the upper body is consistent with that of the chassis and is connected with the monitor, wherein when the upper body orientation detection device detects that the orientation of the upper body is consistent with that of the chassis and the chassis moves towards the rear part of the chassis, or when the upper body orientation detection device detects that the orientation of the upper body is not consistent with that of the chassis and the chassis moves towards the front part of the chassis, the monitor displays an image transmitted by the camera; further, the rotary working machine includes a parameter detection device connected to the monitor for detecting a machine parameter, and the monitor displays the machine parameter detected by the parameter detection device without displaying an image transmitted from the camera when the upper body orientation detection device detects that the upper body orientation does not coincide with the chassis orientation and the chassis is traveling rearward of the upper body orientation detection device.
Furthermore, in the video monitoring system behind the walking of the rotary working machine, the circle center of the semicircular conducting plate coincides with the rotation center of the upper vehicle body, the semicircular conducting plate is fixedly installed relative to one of the upper vehicle body and the chassis, and the conductive slider is fixedly installed relative to the other of the upper vehicle body and the chassis; the conductive sliding block slides on a circle on which a semicircular conductive plate is arranged along with the rotation of the upper vehicle body relative to the chassis, and the semicircular conductive plate and the conductive sliding block are connected with different input terminals of the monitor; the contact connection and disconnection of the conductive sliding block and the semicircular conductive plate correspond to the direction of the upper vehicle body and the direction of the chassis in the same direction and in the opposite direction. For example, when the upper vehicle body and the chassis face in the same direction, the conductive sliding block is electrically connected with the semicircular conductive plate, and when the upper vehicle body and the chassis face in the opposite direction, the conductive sliding block is disconnected with the semicircular conductive plate. At the moment, the orientation of the upper vehicle body is consistent with that of the chassis, namely, the included angle formed by the right front of the upper vehicle body and the right front of the chassis is within +/-90 degrees, and the orientation of the upper vehicle body is opposite to that of the chassis, namely, the included angle formed by the right front of the upper vehicle body and the right rear of the chassis is within +/-90 degrees.
Or the upper vehicle body orientation detection device comprises a conductive substrate and a conductive sliding block, wherein the conductive substrate and the conductive sliding block are made of conductive materials, the conductive substrate comprises two arc-shaped conductive plates on concentric circles, the circle center of the circle where the arc-shaped conductive plate is located is overlapped with the rotation center of the upper vehicle body, the conductive substrate is fixedly installed relative to one of the upper vehicle body and the chassis, and the conductive sliding block is fixedly installed relative to the other of the upper vehicle body and the chassis; the conductive sliding block slides on a circle on which an arc-shaped conductive plate is arranged along with the rotation of the upper vehicle body relative to the chassis, and the arc-shaped conductive plate and the conductive sliding block are connected with different input terminals of the monitor; when the orientation of the upper vehicle body is consistent with that of the chassis, the conductive slider is electrically connected with one conductive substrate, and when the orientation of the upper vehicle body is opposite to that of the chassis, the conductive slider is electrically connected with the other conductive substrate. The upper body is oriented in line with the chassis, meaning that the angle between the front of the upper body and the front of the chassis is within a range set by man, such as within ± 90 ° or within other set angle ranges, such as within ± 60 °. The upper body and the chassis face oppositely, namely that an included angle formed by the right front of the upper body and the rear of the chassis is within a range set by people, such as +/-90 degrees or other set angle ranges. Or the upper body orientation detecting means is an angle sensor for detecting a turning angle of the upper body with respect to the chassis. The monitor detects an included angle between the upper vehicle body and the chassis through the angle sensor, and judges the orientation relationship between the upper vehicle body and the chassis through the included angle, for example, when the orientation of the upper vehicle body is consistent with that of the chassis and the vertical central planes of the upper vehicle body and the chassis are overlapped, the included angle between the upper vehicle body and the chassis is zero degree, when the included angle between the upper vehicle body and the chassis is 0-90 degrees and 270-360 degrees, the orientation of the upper vehicle body and the chassis is consistent, and when the included angle between the upper vehicle body and the chassis is 90-270 degrees, the orientation of the upper vehicle body and the chassis is opposite.
Further, in the video monitoring system for monitoring the rear side of the traveling of the slewing work machine, the chassis traveling direction detecting device may be a sensor for detecting a rotating direction of a traveling motor mounted on the chassis, a pressure sensor for detecting a pressure in a drive oil passage of the traveling motor mounted on the chassis, or a pilot pressure sensor for detecting a pilot pressure in a pilot control oil passage of the traveling motor mounted on the chassis.
Furthermore, in the video monitoring system for the rear walking of the rotary working machine, the video monitoring system further comprises a switch connected with the monitor, the monitor is connected with a working parameter detection device on the rotary working machine, and the switch is used for triggering the monitor to switch between an upper vehicle body rear video image display mode and a rotary working machine working parameter display mode. The change-over switch is used as a display mode control switch of the monitor, and when the change-over switch triggers the upper vehicle body rear video image display mode of the monitor, the monitor displays the video image shot by the upper vehicle body rear camera without taking the state of the device as a condition, namely whether the orientation of the upper vehicle body is consistent with that of the chassis or not no matter whether the chassis is walking or not.
Compared with the prior art, the video monitoring system for the rear walking of the rotary working machine only needs to display the video of the rear area of the upper vehicle body of the machine on the monitor when the machine walks towards the rear of the upper vehicle body, so that an operator can observe the visual blind area of the upper vehicle body conveniently, and the operation safety of the machine is improved.
Drawings
Fig. 1 is a schematic view of the installation and arrangement of the video monitoring system on the machine after walking.
Fig. 2 is a schematic view of the mounting arrangement of the upper body orientation detecting device in the present invention.
Part names and serial numbers in the figure:
the device comprises a chassis 1, an upper vehicle body 2, a cab 3, a monitor 4, a camera 5, a rotary support outer ring 6, a semicircular conductive plate 61, a rotary support inner ring 7 and a conductive slide block 71.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1, the slewing work machine in the present embodiment is an excavator, and may be embodied similarly to a machine having a chassis for traveling and an upper body, such as a crawler crane, slewing-mounted on the chassis.
In the present embodiment, the excavator includes a chassis 1 for traveling on the lower side and an upper body 2 rotatably mounted on the chassis, a monitor 4 mounted on the upper body in a cab 3, a camera 5 connected to the monitor 4 and mounted on the upper body for capturing an image behind the upper body, a chassis traveling direction detection device connected to the monitor 4 for detecting the traveling direction of the chassis, and an upper body orientation detection device.
The upper vehicle body is arranged on the chassis through a rotary support, the rotary support comprises a rotary support outer ring 6 and a rotary support inner ring 7 which can rotate relatively, the rotary support inner ring 7 is fixedly connected with the chassis 1, and the rotary support outer ring 6 is fixedly connected with the upper vehicle body 2. The upper vehicle body is driven by the rotary motor to rotate on the rotary support.
As shown in fig. 2, the upper body orientation detection device includes a semicircular conductive plate and a conductive slider made of a conductive material, the semicircular conductive plate 61 is fixed on the outer ring 6 of the rotation support in an insulated manner, the conductive slider 71 is fixed on the inner ring 7 of the rotation support in an insulated manner, the center of the semicircular conductive plate coincides with the rotation center of the upper body, the semicircular conductive plate and the conductive slider are connected to different input terminals of the monitor, the conductive slider is electrically connected to the semicircular conductive plate when the upper body and the chassis are oriented in the same direction, and the conductive slider is disconnected from the semicircular conductive plate when the upper body and the chassis are oriented in the opposite direction. The direction of the upper vehicle body is consistent with that of the chassis, namely, an included angle formed by the front of the upper vehicle body and the front of the chassis is within +/-90 degrees, the conductive sliding block slides on a circle where the semicircular conductive plate is located along with the rotation of the upper vehicle body relative to the chassis, the direction of the upper vehicle body is opposite to that of the chassis, namely, the included angle formed by the front of the upper vehicle body and the front of the chassis is within +/-90 degrees, and the conductive sliding block moves along with the rotation of the upper vehicle body relative to the chassis but is not connected with the semicircular.
The chassis advancing direction detection device is a sensor used for detecting the rotating direction of a walking motor arranged on the chassis, namely the walking direction of the chassis is judged by detecting the rotating direction of the walking motor of the excavator through the sensor; in a specific embodiment, the traveling direction of the chassis may be determined by determining the rotation direction of the traveling motor by using the pressure in the drive oil passage, or the pilot pressure sensor may be configured to detect the pilot pressure in a pilot control oil passage of the traveling motor attached to the chassis.
The monitor displays the image transmitted by the camera when the upper body orientation detection device detects that the upper body orientation is consistent with the chassis orientation and the chassis advancing direction detection device detects that the chassis advances towards the rear thereof or when the upper body orientation detection device detects that the upper body orientation is inconsistent (opposite) with the chassis orientation and the chassis advancing direction detection device detects that the chassis advances towards the front thereof, that is, when the actual direction of machine advancing is towards the rear of the upper body, the monitor displays the image transmitted by the camera; when the upper body orientation detection device detects that the upper body orientation is inconsistent with the chassis orientation and the chassis moves towards the rear, namely when the actual machine moving direction is towards the front of the upper body, the monitor does not display the image transmitted by the camera and displays the overall parameters detected by the parameter detection device.
In the technical solution of this embodiment, the walking rear video monitoring system may further include a switch connected to the monitor, the monitor is connected to the working parameter detection device on the excavator, and the switch is used to trigger the monitor to switch between the upper vehicle body rear video image display mode and the excavator working parameter display mode. The change-over switch is used as a display mode control switch of the monitor, and when the change-over switch triggers the video image display mode of the monitor, the monitor displays the video image shot by the camera at the rear part of the upper vehicle body without taking the state of the device as a condition, namely whether the orientation of the upper vehicle body is consistent with that of the chassis or not no matter whether the chassis is walking or not. When the change-over switch triggers the walking rear video monitoring display mode of the monitor, the monitor only displays the video image shot by the camera when the machine walks towards the rear of the upper vehicle body, and the monitor is used for displaying the working parameters of the whole machine under other conditions.
In this embodiment, the upper body orientation detection device may further include a conductive substrate and a conductive slider made of a conductive material, the conductive substrate includes two arc-shaped conductive plates that are on concentric circles and are symmetrically arranged with respect to a center of the circle, the center of the circle where the arc-shaped conductive plate is located coincides with a rotation center of the upper body, the conductive substrate is fixedly mounted with respect to one of the upper body and the chassis, and the conductive slider is fixedly mounted with respect to the other of the upper body and the chassis; the conductive sliding block slides on a circle on which the arc-shaped conductive plate is positioned along with the rotation of the upper vehicle body relative to the chassis, and the arc-shaped conductive plate and the conductive sliding block are connected with different input terminals of the monitor; when the orientation of the upper vehicle body is consistent with that of the chassis, the conductive slider is electrically connected with one conductive substrate, and when the orientation of the upper vehicle body is opposite to that of the chassis, the conductive slider is electrically connected with the other conductive substrate. The upper body is oriented in line with the chassis, meaning that the angle between the front of the upper body and the front of the chassis is within a range set by man, such as within ± 90 ° or within other set angle ranges, such as within ± 60 °. The upper body and the chassis face oppositely, namely that an included angle formed by the right front of the upper body and the rear of the chassis is within a range set by people, such as +/-90 degrees or other set angle ranges.
Compared with the prior art, the video monitoring system for the rear walking of the rotary working machine only needs to display the video of the rear area of the upper vehicle body of the machine on the monitor when the machine walks towards the rear of the upper vehicle body, so that an operator can observe the visual blind area of the upper vehicle body conveniently, and the operation safety of the machine is improved.
Claims (5)
1. A video monitoring system for the traveling rear part of a rotary working machine comprises a chassis, an upper vehicle body, a monitor, a camera and a chassis traveling direction detection device, wherein the lower part of the chassis is used for traveling; the monitoring system is characterized by further comprising an upper body orientation detection device which is used for detecting whether the orientation of the upper body is consistent with that of the chassis and is connected with the monitor, wherein when the upper body orientation detection device detects that the orientation of the upper body is consistent with that of the chassis and the chassis moves towards the rear part of the chassis, or when the upper body orientation detection device detects that the orientation of the upper body is not consistent with that of the chassis and the chassis moves towards the front part of the chassis, the monitor displays an image transmitted by the camera; the upper vehicle body orientation detection device comprises a semicircular current conducting plate and a current conducting slide block, wherein the semicircular current conducting plate and the current conducting slide block are made of conducting materials, the circle center of the semicircular current conducting plate is overlapped with the rotation center of the upper vehicle body, the semicircular current conducting plate is fixedly installed relative to one of the upper vehicle body and the chassis, and the current conducting slide block is fixedly installed relative to the other one of the upper vehicle body and the chassis; the conductive sliding block slides on a circle on which a semicircular conductive plate is arranged along with the rotation of the upper vehicle body relative to the chassis, and the semicircular conductive plate and the conductive sliding block are connected with different input terminals of the monitor; the contact connection and disconnection between the conductive sliding block and the semicircular conductive plate correspond to the direction of the upper vehicle body and the direction of the chassis in the opposite direction; or the upper vehicle body orientation detection device comprises a conductive substrate and a conductive sliding block, wherein the conductive substrate and the conductive sliding block are made of conductive materials, the conductive substrate comprises two arc-shaped conductive plates on concentric circles, the circle center of the circle where the arc-shaped conductive plate is located is overlapped with the rotation center of the upper vehicle body, the conductive substrate is fixedly installed relative to one of the upper vehicle body and the chassis, and the conductive sliding block is fixedly installed relative to the other of the upper vehicle body and the chassis; the conductive sliding block slides on a circle on which an arc-shaped conductive plate is arranged along with the rotation of the upper vehicle body relative to the chassis, and the arc-shaped conductive plate and the conductive sliding block are connected with different input terminals of the monitor; when the orientation of the upper vehicle body is consistent with that of the chassis, the conductive slider is electrically connected with one conductive substrate, and when the orientation of the upper vehicle body is opposite to that of the chassis, the conductive slider is electrically connected with the other conductive substrate.
2. The video surveillance system for the rear traveling of a rotary working machine according to claim 1, wherein the rotary working machine includes a parameter detecting device for detecting a machine parameter and connected to the monitor, and the monitor displays the overall machine parameter detected by the parameter detecting device without displaying the image transmitted from the camera when the upper body orientation detecting device detects that the upper body orientation is not identical to the chassis orientation and the chassis is traveling toward the rear thereof.
3. The video monitoring system for monitoring the rear traveling of a rotary working machine according to claim 1, wherein the chassis traveling direction detecting means is a sensor for detecting the rotational direction of a traveling motor attached to the chassis, a pressure sensor for detecting the pressure in a drive oil path of the traveling motor attached to the chassis, or a pilot pressure sensor for detecting the pilot pressure in a pilot control oil path of the traveling motor attached to the chassis.
4. The video monitoring system for the rear walking of the rotary working machine according to claim 1, further comprising a switch connected to the monitor, wherein the monitor is connected to the working parameter detecting device on the rotary working machine, and the switch is configured to trigger the monitor to switch between an upper vehicle body rear video image display mode and a rotary working machine working parameter display mode.
5. The video surveillance system for the rear of a rotary work machine as claimed in claim 1, wherein the rotary work machine is an excavator or a crawler crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710773.7A CN108951749B (en) | 2018-07-03 | 2018-07-03 | Video monitoring system for walking rear part of rotary operation machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710773.7A CN108951749B (en) | 2018-07-03 | 2018-07-03 | Video monitoring system for walking rear part of rotary operation machine |
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| CN108951749A CN108951749A (en) | 2018-12-07 |
| CN108951749B true CN108951749B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810710773.7A Active CN108951749B (en) | 2018-07-03 | 2018-07-03 | Video monitoring system for walking rear part of rotary operation machine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730060A (en) * | 2012-06-21 | 2012-10-17 | 三一重机有限公司 | System and method for controlling travelling directions of engineering machine |
| WO2013088995A1 (en) * | 2011-12-13 | 2013-06-20 | 住友建機株式会社 | Peripheral image display device and peripheral image display method for construction machinery |
| CN203834557U (en) * | 2014-05-08 | 2014-09-17 | 山东卡特重工机械有限公司 | Excavator with rearview function |
| CN107034942A (en) * | 2017-05-24 | 2017-08-11 | 成都跟驰科技有限公司 | Virtual reality system for excavator remote control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10030358B2 (en) * | 2014-02-13 | 2018-07-24 | Trimble Inc. | Non-contact location and orientation determination of an implement coupled with a mobile machine |
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2018
- 2018-07-03 CN CN201810710773.7A patent/CN108951749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013088995A1 (en) * | 2011-12-13 | 2013-06-20 | 住友建機株式会社 | Peripheral image display device and peripheral image display method for construction machinery |
| CN102730060A (en) * | 2012-06-21 | 2012-10-17 | 三一重机有限公司 | System and method for controlling travelling directions of engineering machine |
| CN203834557U (en) * | 2014-05-08 | 2014-09-17 | 山东卡特重工机械有限公司 | Excavator with rearview function |
| CN107034942A (en) * | 2017-05-24 | 2017-08-11 | 成都跟驰科技有限公司 | Virtual reality system for excavator remote control |
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| CN108951749A (en) | 2018-12-07 |
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