Control method for construction machine

Abstract

To provide a control method for a construction machine that enables safe use of an attachment.SOLUTION: A control method for a construction machine 1 capable of acquiring operation information of an attached attachment 43 displays, in a first area of a screen of a display device 34, type information 72 indicating the type of attachment 43, operation time information 73 indicating the continuous operation time of the attachment 43 acquired as operation information, and time limit information 74 indicating the time limit for which continuous operation of the attachment 43 is permitted.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a construction machine that can be operated with an attachment attached. How to control Regarding. [Background technology]

[0002] Conventionally, construction machines are equipped with a working implement that is composed of a boom, an arm, a bucket, etc., and can perform excavation work using the bucket. In addition, construction machines can perform work specific to each attachment by attaching another attachment to the working implement instead of the bucket. Some construction machines monitor and display their operating status.

[0003] For example, the attachment operation monitoring device disclosed in Patent Document 1 includes a calculation unit that calculates the operating pressure and operating time of a hydraulic drive system (attachment). The calculation unit calculates the average operating pressure and continuous operating time of the hydraulic drive system based on the operating pressure and operating time while the work machine is in use, and controls the lighting state of an operation indicator lamp in accordance with the calculated average operating pressure and continuous operating time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6420071 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional construction machines, attachments can add new functions by attaching them to the machine body, and therefore are highly convenient and frequently used. However, the use of attachments can be dangerous in some cases and requires skilled experience, so there is a demand for construction machines that allow even beginners to use attachments safely. However, conventional construction machines and the attachment operation monitoring device of the above-mentioned Patent Document 1 can notify and optimize the settings of the hydraulic pressure that drives the attachment, but cannot notify and optimize the use state of the attachment to promote safe use.

[0006] The present invention relates to a construction machine that allows safe use of attachments. How to control The purpose is to provide. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention The control method for construction machinery is capable of acquiring operation information of an attached attachment, and displays, in a first area of ​​a screen of a display device, type information indicating the type of the attachment, operation time information indicating the continuous operation time of the attachment acquired as the operation information, and time limit information indicating the time limit for which continuous operation of the attachment is permitted, side by side. Effect of the Invention

[0008] According to the present invention, a construction machine capable of safely using an attachment is provided. How to control can be provided. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view showing an example of a construction machine according to an embodiment of the present invention. [Diagram 2] 1 is a block diagram showing an example of a construction machine according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a plan view showing an example of a home screen of a construction machine according to a first embodiment of the present invention. [Figure 4] FIG. 2 is a plan view showing an example of a home screen of a construction machine according to a first embodiment of the present invention. [Diagram 5] FIG. 2 is a plan view showing an example of a home screen of a construction machine according to a first embodiment of the present invention. [Figure 6]FIG. 2 is a plan view showing an example of a home screen of a construction machine according to a first embodiment of the present invention. [Figure 7] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a second embodiment of the present invention. [Figure 8] 5 is a graph showing the relationship between the temperature of hydraulic oil that drives an attachment and the time limit for PTO drive in a construction machine according to an embodiment of the present invention. [Figure 9] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a second embodiment of the present invention. [Figure 10] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a second embodiment of the present invention. [Figure 11] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a third embodiment of the present invention. [Figure 12] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a third embodiment of the present invention. [Figure 13] 5 is a graph showing the relationship between time and amplitude of vibration during a striking operation of a work machine and vibration during PTO drive of an attachment in a construction machine according to an embodiment of the present invention. [Figure 14] FIG. 13 is a plan view showing an example of a home screen of a construction machine according to a fourth embodiment of the present invention. [Figure 15] FIG. 13 is a plan view showing an example of a home screen of another example of a construction machine according to an embodiment of the present invention. [Figure 16] FIG. 13 is a plan view showing an example of a home screen of another example of a construction machine according to an embodiment of the present invention. [Figure 17] FIG. 13 is a plan view showing an example of a home screen of another example of a construction machine according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A construction machine 1 according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing the construction machine 1 of the present embodiment.

[0011] The construction machine 1 is used, for example, at construction sites, demolition sites, mines, etc., and performs work such as civil engineering work and building construction work in response to operation by an operator. In this embodiment, the construction machine 1 is configured as a hydraulic excavator that performs work such as excavating earth and sand. The construction machine 1 is configured as a work vehicle that includes a lower traveling body 2, an upper rotating body 3, and a work implement 4, and in which the upper rotating body 3 and the work implement 4 are rotatably provided above the lower traveling body 2.

[0012] The lower traveling body 2 includes a pair of left and right crawlers 21, and a track frame 22. In addition, a blade 24 is attached to the lower traveling body 2 via a blade arm 23. The pair of crawlers 21 receive power from an engine 31 of the upper rotating body 3 to drive the construction machine 1 to travel, etc. The track frame 22 is provided between the pair of crawlers 21, and supports the upper rotating body 3 so that it can rotate. The blade arm 23 supports the blade 24, and the blade 24 functions as a blade.

[0013] The upper rotating body 3 is equipped with an engine 31, a counterweight 32, and a cabin 33. Inside the cabin 33, there are installed a driver's seat for a worker to sit in, a display device 34 for displaying various information, an operation device 35 for the worker to operate, etc. (see FIG. 2). The display device 34 displays a home screen 70 in response to the operation of the construction machine 1, and displays various screens in response to the operation of the operation device 35.

[0014] The operation device 35 accepts operations such as travel of the construction machine 1 and rotation of the upper rotating body 3, and operations for work of the work implement 4. For example, the operation device 35 is equipped with a work implement operation means that accepts rotation operations of the boom 41, arm 42, and attachment 43 of the work implement 4. The operation device 35 is equipped with an attachment operation means that accepts PTO operation of the attachment 43 when an attachment 43 driven by a power take-off (PTO) is attached to the work implement 4. The work implement operation means and attachment operation means of the operation device 35 output operation signals to the control unit 5 according to the operations.

[0015] The work equipment 4 performs various tasks such as excavating and crushing earth and sand according to the operation of the worker. The work equipment 4 is attached to the upper rotating body 3, and is composed of a boom 41, an arm 42, and an attachment 43 such as a bucket for excavation work. The construction machine 1 drives the work equipment 4 by hydraulic power of hydraulic oil, and is equipped with a hydraulic actuator (not shown) that drives the boom 41, the arm 42, and the attachment 43. The construction machine 1 uses the power generated by the engine 31 to supply hydraulic oil from a hydraulic oil tank (not shown) to the hydraulic actuator by a hydraulic pump (not shown), and drives the hydraulic actuator using the hydraulic oil pressurized by the hydraulic pump as a power transmission medium.

[0016] The boom 41 is hydraulically rotatably mounted on a machine body consisting of the lower traveling body 2 and the upper rotating body 3. For example, the boom 41 has a base end near the lower part of the upper rotating body 3, extends with the base end as a fulcrum, and is configured to rotate up and down.

[0017] The arm 42 is attached to the tip of the boom 41 and is hydraulically driven to be rotatable relative to the boom 41. For example, the arm 42 has a base end near the tip of the boom 41, extends with the base end as a fulcrum, and is configured to be able to rotate up and down.

[0018] The attachment 43 is detachably attached to the tip of the arm 42. For example, a bucket as the attachment 43 is provided so as to be rotatable up and down by hydraulic drive. The construction machine 1 is usually equipped with a bucket as the attachment 43, but other members such as a breaker 43a for crushing work, a fork, a grapple, a cutter, a crusher, a packer, a rake, and a clamshell can be attached depending on the type of work. In this embodiment, an example will be described in which the construction machine 1 is equipped with a breaker 43a that performs a striking operation as the attachment 43 driven by a power take-off (PTO). The breaker 43a has a rod 43b extending in the vertical direction, and performs a striking operation by vibrating the rod 43b up and down by the PTO.

[0019] As shown in Fig. 2, the construction machine 1 is also equipped with a control unit 5 and a memory unit 6. The control unit 5 is composed of a CPU or the like, and controls the operation of each part of the construction machine 1. For example, the control unit 5 inputs operation signals output from the work machine operation means and attachment operation means of the operation device 35, and controls each part in response to the operation signals. The memory unit 6 is composed of a storage medium such as ROM or RAM, and stores programs and data for controlling each part and each function of the construction machine 1.

[0020] The control unit 5 controls each part and each function of the construction machine 1 by executing calculations based on the programs and data stored in the memory unit 6. For example, the control unit 5 executes the programs to function as an operation control means 51, an information acquisition means 52, and an alarm means 53, thereby monitoring whether the work performed by the attachment 43 of the work machine 4 is appropriate. The control unit 5 also functions as an information determination means 54 (determination means) that determines dangerous operations of the attachment 43 based on operation information acquired by the information acquisition means 52.

[0021] The construction machine 1 may be equipped with an attachment identification means, such as a sensor or mechanism, capable of identifying the type of the attachment 43, in the work implement 4. In this case, when the attachment 43 is attached, the type of the attachment 43 is automatically identified by the attachment identification means, and the control unit 5 inputs the type of the attachment 43 from the attachment identification means and stores it in the memory unit 6. Alternatively, the construction machine 1 may be configured to accept an input operation of the type of the attachment 43 by the operation device 35. In this case, the control unit 5 stores the type of the attachment 43 input via the operation device 35 in the memory unit 6.

[0022] The operation control means 51 controls the operation of the boom 41, arm 42, and attachment 43 of the work machine 4 in response to the operation of the operating device 35 by the worker. Furthermore, the operation control means 51 stops or inhibits and limits the operation of the attachment 43 when the operation of the attachment 43 is dangerous or approaches danger based on the operation information of the attachment 43 acquired by the information acquisition means 52. For example, the operation control means 51 reduces the PTO output to inhibit the operation of the attachment 43, specifically, slowing down the speed of impact of the breaker 43a or reducing the amplitude.

[0023] The information acquiring means 52 acquires operational information of the attachment 43 while the attachment 43 is operating or before the attachment 43 is operated.

[0024] The notification means 53 notifies an operation state related to a dangerous operation of the attachment 43 based on the operation information of the attachment 43 acquired by the information acquisition means 52. For example, the notification means 53 notifies the operation state by a screen display on the display device 34, lighting or blinking of an alarm lamp, audio output, etc. The notification means 53 can notify the result of determination made by the information determination means 54 regarding the dangerous operation of the attachment 43 as the operation state.

[0025] Next, a first embodiment of the monitoring operation of the work of the attachment 43 in the construction machine 1 will be described. In the construction machine 1, when the attachment 43 such as the breaker 43a is driven by the PTO, if the impact is continuously performed for a predetermined time limit (e.g., 30 seconds) or longer, abnormal friction occurs in the rod 43b of the breaker 43a and the oil temperature of the hydraulic oil increases, which may cause the attachment 43 to break down. Therefore, in the first embodiment, the construction machine 1 detects continuous impact of the breaker 43a, which is the attachment 43, for a time limit or longer as a dangerous operation.

[0026] In this case, the information acquiring means 52 functions as a timing means that measures the operation time of the attachment 43 and acquires it as operation information. The operation time of the attachment 43 is the time during which the attachment 43 is driven by the PTO, and the timing means executes (starts) measurement of the operation time in response to an operation signal from the attachment operating means of the operating device 35, for example.

[0027] The notification means 53 notifies the operation state of the attachment 43 based on the operation time measured by the timing means as operation information of the attachment 43. The notification means 53 executes (starts) notification of the operation time in response to an operation signal from the attachment operation means of the operation device 35, for example.

[0028] For example, in the case of normal operation in which an attachment 43 such as a bucket is hydraulically driven, the work status is displayed in the work status field 71 on the home screen 70 of the display device 34, whereas in the case of PTO operation in which an attachment 43 such as a breaker 43a is driven by the PTO, an operation status based on the operation time is displayed. As shown in Fig. 3, the notification means 53 displays type information 72 indicating the type of the attachment 43, operation time information 73 indicating the operation time, and time limit information 74 indicating the time limit as operation statuses in the work status field 71 on the home screen 70 of the display device 34. The operation time information 73 is displayed by counting up, and the time limit information 74 may be displayed by a fixed value or may be displayed by counting down. In other words, the control method for the construction machine 1 capable of acquiring operation information of the attached attachment 43 displays, in a first area of ​​the home screen 70 of the display device 34, type information 72 indicating the type of attachment 43, operation time information 73 indicating the continuous operation time of the attachment 43 acquired as operation information, and time limit information 74 indicating the time limit for which continuous operation of the attachment 43 is permitted.

[0029] The information determination means 54 functions as a time determination means for determining the operation time measured by the timing means based on the time limit. The time determination means determines the operation of the attachment 43 when the operation time reaches the time limit as a dangerous operation. In this case, the notification means 53 notifies the result of the time determination between the operation time of the attachment 43 and the time limit by the time determination means as the operation status. For example, the notification means 53 notifies the operation status by displaying a message 75 stating that the operation time has reached the time limit or that a warning time slightly shorter than the time limit has reached as the time determination result on the home screen 70 of the display device 34 as shown in FIG. 4. In other words, the method for controlling the construction machine 1 displays predetermined notification information (message 75) superimposed on a second area above the first area on the home screen 70 when the continuous operation time satisfies a predetermined condition. Further, the notification means 53 may notify the time determination result by lighting or blinking an alarm lamp, outputting a voice, etc. The time determination means executes (starts) determination of the operation time in response to an operation signal from the attachment operation means of the operation device 35, for example.

[0030] The operation control means 51 stops or suppresses the operation of the attachment 43 based on the result of the time determination by the time determination means between the operation time of the attachment 43 and the time limit. For example, the operation control means 51 suppresses the operation of the attachment 43 when the operation time reaches the warning time, and stops the operation of the attachment 43 when the operation time reaches the time limit. Alternatively, the operation control means 51 suppresses the operation of the attachment 43 when the operation time reaches the time limit, and stops the operation of the attachment 43 when the operation time reaches a limit time that is slightly longer than the time limit. The operation control means 51 executes (starts) the restriction of the operation of the attachment 43 in response to, for example, an operation signal from the attachment operation means of the operation device 35.

[0031] In this case, the notification means 53 notifies, as an operation status, that the operation of the attachment 43 has been stopped or suppressed by the operation control means 51. For example, as shown in Fig. 5, the notification means 53 displays, as an operation status, a message 76 describing that the operation of the attachment 43 has been suppressed, on the home screen 70 of the display device 34. Also, as shown in Fig. 6, the notification means 53 displays, as an operation status, a message 77 describing that the operation of the attachment 43 has been stopped, on the home screen 70 of the display device 34. In other words, in the control method of the construction machine 1, when the continuous operation time satisfies a predetermined condition, predetermined notification information (message 76 or message 77) is superimposed and displayed in a second area above the first area on the home screen 70. Here, in the control method of the construction machine 1, when the continuous operation time reaches a time limit, the predetermined notification information is transitioned from the first notification information (message 76) to the second notification information (message 77) and displayed. The notification means 53 may notify in advance that the operation of the attachment 43 will be stopped or suppressed by the operation control means 51 before the operation is stopped or suppressed.

[0032] Furthermore, when the operation control means 51 stops the operation of the attachment 43 based on the operation information of the attachment 43, the construction machine 1 may prohibit resumption of the operation of the attachment 43 for a predetermined stop time after the stop. In this case, the notification means 53 may display on the home screen 70 of the display device 34 that the operation of the attachment 43 is being stopped, and may display on the home screen 70 the time until the operation of the attachment 43 can be resumed.

[0033] In the above example, the notification means 53 displays the operation time information 73 and the time limit information 74 of the attachment 43 on the home screen 70 of the display device 34 as operation information based on the operation time of the attachment 43. However, the present invention is not limited to this example. For example, in another example, the notification means 53 may display the operation time of the attachment 43 using a meter that is set to 0 when the operation of the attachment 43 starts, increases as the operation of the attachment 43 progresses, and reaches a maximum of the time limit or limit time. This meter may have scales for the above-mentioned warning time, time limit, and limit time, and may be displayed in a different display method, such as by color-coding the levels of these times. For example, this meter may be displayed in blue when the operation of the attachment 43 is normal, in yellow when the operation of the attachment 43 is suppressed, and in red when the operation of the attachment 43 is stopped.

[0034] In addition, in the construction machine 1, the warning time, time limit, and limit time for the attachment 43 may be defined in advance for each type of attachment 43, or may be made arbitrarily set in response to the operation of the operating device .

[0035] Next, a second embodiment of the monitoring operation of the work of the attachment 43 in the construction machine 1 will be described. In the construction machine 1, the oil temperature of the hydraulic oil that drives the attachment 43 can be set to an appropriate temperature (for example, 50 to 70°C) by performing a warm-up operation or the like, so that the hydraulic drive of the work equipment 4 and the PTO drive of the attachment 43 can be performed normally. However, if the oil temperature of the hydraulic oil is too low compared to the appropriate temperature, the viscosity of the hydraulic oil increases, and the hydraulic drive of the work equipment 4 and the PTO drive of the attachment 43 cannot be performed normally, which may cause the attachment 43 to break down. Also, in the construction machine 1, if the oil temperature of the hydraulic oil that drives the attachment 43 is too high compared to the appropriate temperature, problems may occur due to deterioration of parts or a decrease in the viscosity of the hydraulic oil, which may cause the attachment 43 to break down. Therefore, in the second embodiment, the construction machine 1 detects an abnormal temperature of the hydraulic oil that drives the attachment 43 as a dangerous operation.

[0036] Furthermore, in the construction machine 1, the time during which the breaker 43a, which is the attachment 43, can perform continuous strikes, i.e., the time limit, may change depending on the temperature of the hydraulic oil. Therefore, in the second embodiment, as in the above-described first embodiment, the temperature of the hydraulic oil is taken into consideration when detecting continuous strikes of the breaker 43a for longer than the time limit as a dangerous operation. Below, the points that differ from the first embodiment will be described.

[0037] In this case, the information acquisition means 52 functions as a temperature detection means that detects the temperature of the hydraulic oil and acquires it as operation information. The temperature detection means may detect the temperature of the hydraulic oil by a temperature sensor provided near the hydraulic oil tank, or may detect the temperature of the hydraulic oil by a temperature sensor provided near the attachment 43. Alternatively, the temperature detection means may detect the average value of the detection result of the temperature sensor near the hydraulic oil tank and the detection result of the temperature sensor near the attachment 43 as the oil temperature of the hydraulic oil. Note that the temperature detection means executes (starts) detection of the temperature of the hydraulic oil in response to the operation of the construction machine 1, regardless of the operation of the attachment 43.

[0038] The notification means 53 displays oil temperature information 78, which indicates the temperature of the hydraulic oil detected by the temperature detection means, on the home screen 70 of the display device 34, as shown in Fig. 7. When the oil temperature is other than the optimum temperature, the notification means 53 may display the oil temperature information 78 in a different display method, such as by changing the color. Alternatively, the notification means 53 may display the description of the oil temperature information 78 only when the oil temperature is other than the optimum temperature.

[0039] The notification means 53 notifies the operation state based on the operation time of the attachment 43 based on the operation time measured by the timing means and the oil temperature of the hydraulic oil detected by the temperature detection means as operation information of the attachment 43. As described above, the notification means 53 notifies the time determination result between the operation time of the attachment 43 and the limit time by the time determination means of the control unit 5 as the operation state, and the time determination means performs time determination by changing the limit time according to the oil temperature of the hydraulic oil. The time determination means shortens the limit time when the oil temperature is low, lengthens the limit time as the oil temperature approaches the appropriate temperature, and shortens the limit time again when the oil temperature is high. The control unit 5 may determine the operation of the attachment 43 when the oil temperature is abnormally low or high compared to the appropriate temperature as a dangerous operation.

[0040] For example, as shown in Fig. 8, when the oil temperature is below a predetermined lower limit temperature (e.g., 40°C), the time limit is set to a predetermined lower limit time (e.g., 10 seconds) that is shorter than an appropriate value (e.g., 25 to 30 seconds). As the oil temperature rises from the lower limit temperature to an appropriate temperature (e.g., 50 to 70°C), the time limit is set gradually higher, and when the oil temperature is at the appropriate temperature, the time limit is set to the appropriate value. As the oil temperature rises further beyond the appropriate temperature, the time limit is set gradually lower.

[0041] The notification means 53 displays the time limit information 74 corresponding to the oil temperature in the work status field 71 on the home screen 70 of the display device 34 as described above. The notification means 53 may notify the user that the operation time has reached the time limit corresponding to the oil temperature, or that a warning time slightly shorter than the time limit corresponding to the oil temperature has been reached, by displaying the screen of the display device 34, turning on or blinking an alarm lamp, outputting a voice, or the like. When the oil temperature has not reached the appropriate temperature, the notification means 53 displays a message 79 on the home screen 70 of the display device 34 indicating that the oil temperature is low and encouraging a warm-up operation, as shown in FIG. 9. At this time, when the oil temperature has reached the appropriate temperature by the warm-up operation, the notification means 53 may display a warm-up completion message on the home screen 70. When the oil temperature exceeds the appropriate temperature, the notification means 53 displays a message 79 on the home screen 70 indicating that the oil temperature is high and encouraging the user to stop the PTO operation of the attachment 43.

[0042] The operation control means 51 stops or suppresses the operation of the attachment 43 when the operation time reaches or approaches the limit time based on the result of the time judgment made by the time judgment means between the operation time of the attachment 43 and the limit time according to the oil temperature. In this case, the notification means 53 notifies the operation control means 51 of a message 76 (see FIG. 9) to suppress the operation of the attachment 43 or a message 77 (see FIG. 10) to stop the operation of the attachment 43 as the operation status, as in the first embodiment.

[0043] In addition, the optimum temperature and minimum temperature of the hydraulic oil and the minimum time for the attachment 43 may be defined in advance for each type of attachment 43 in the construction machine 1, or may be made arbitrarily set in response to the operation of the operating device 35.

[0044] Next, a third embodiment of the monitoring operation of the work of the attachment 43 in the construction machine 1 will be described. In the construction machine 1, when performing crushing work by the breaker 43a or crane work by the attachment 43 such as a bucket, in order to perform the work stably, it is necessary to maintain the posture of the work machine 4 so that the drive shaft of the attachment 43 (for example, the drive shaft extending in the vibration direction of the rod 43b of the breaker 43a) is within a predetermined safety range based on the vertical direction. For example, hitting with the drive shaft of the breaker 43a inclined relative to the object, so-called diagonal hitting and diagonal crane work are not preferable. If the drive shaft of the attachment 43 is outside the safe range, the work becomes unstable, and there is a risk that the attachment 43 will break down or the construction machine 1 will fall over. Therefore, in the third embodiment, the construction machine 1 detects an abnormality in the posture of the attachment 43 as a dangerous operation.

[0045] In this case, the information acquisition means 52 functions as a posture detection means that detects the posture of the attachment 43 and acquires it as operation information. The posture detection means detects the angle of the drive shaft of the attachment 43 with respect to the horizontal direction (e.g., the angle in the front-to-rear direction) as the posture of the attachment 43, in response to the detection results of various sensors provided at various positions on the construction machine 1. The posture detection means executes (starts) detection of the posture of the attachment 43 in response to, for example, an operation signal from the attachment operation means of the operation device 35.

[0046] For example, the construction machine 1 is provided with an inclination sensor 81 on the lower traveling body 2 and the upper rotating body 3 to detect the inclination angle of the construction machine 1 with respect to the horizontal direction. The construction machine 1 is provided with a rotation sensor 82 on the upper rotating body 3 to detect the rotation angle of the upper rotating body 3 with respect to the lower traveling body 2. The construction machine 1 is provided with an angle sensor 83 on the boom 41 to detect the rotation angle of the boom 41 with respect to the upper rotating body 3, an angle sensor 84 on the arm 42 to detect the rotation angle of the arm 42 with respect to the boom 41, and an angle sensor 85 on the link mechanism to which the attachment 43 is attached to detect the rotation angle of the attachment 43 with respect to the arm 42. The attitude detection means detects the angle of the drive shaft of the attachment 43 according to the detection results of the inclination sensor 81, the rotation sensor 82, and the angle sensors 83 to 85.

[0047] The information determination means 54 functions as an attitude determination means for determining the attitude of the attachment 43 detected by the attitude detection means based on a predetermined attitude threshold. For example, the attitude determination means defines in advance a safe range in which the angle of the drive shaft of the attachment 43 is safely permissible as an attitude threshold by an angle value based on the vertical direction. Then, the attitude determination means determines whether the angle of the drive shaft of the attachment 43 detected by the attitude detection means is within the safe range. The attitude determination means may determine the operation of the attachment 43 when the angle of the drive shaft is outside the safe range as a dangerous operation. For example, the attitude determination means executes (starts) determination of the attitude of the attachment 43 in response to an operation signal from the attachment operation means of the operation device 35.

[0048] The notification means 53 notifies the result of the attitude determination by the attitude determination means as an operating state. The notification means 53 may notify, as an operating state, that the attitude of the attachment 43 is within an attitude threshold or outside the attitude threshold. The notification means 53 executes (starts) notification of the attitude determination result of the attachment 43 in response to, for example, an operation signal from the attachment operation means of the operation device 35.

[0049] For example, the notification means 53 displays a posture outline diagram 86 showing the relationship between the angle of the drive shaft of the attachment 43 and the safe range on the home screen 70 of the display device 34, as shown in FIG. 11. In the posture outline diagram 86, an actual posture line 87 showing the angle of the drive shaft of the attachment 43, a limit line 88 showing the angle of the safe range, and a target posture line 89 which is the most normal posture of the attachment 43 are displayed in a comparable manner. The target posture line 89 is in the vertical direction. At this time, the actual posture line 87 or the limit line 88 may be displayed in a different manner depending on whether the drive shaft is within the safe range or outside the safe range. For example, as shown in FIG. 11, when the drive shaft is within the safe range, the actual posture line 87 or the limit line 88 is displayed in blue, and as shown in FIG. 12, when the drive shaft is outside the safe range, the actual posture line 87 or the limit line 88 is displayed in red.

[0050] Furthermore, the notification means 53 may display a message that the attitude of the attachment 43 is within the attitude threshold or that it is outside the attitude threshold on the home screen 70 of the display device 34. The notification means 53 may notify that the attitude of the attachment 43 is outside the attitude threshold by lighting or blinking an alarm lamp, outputting a voice, or the like.

[0051] The motion control means 51 stops or suppresses and limits the motion of the attachment 43 when the drive shaft of the attachment 43 is outside the safe range based on the result of the attitude determination of the attachment 43 by the attitude determination means. In this case, the notification means 53 notifies, as an operating state, that the motion of the attachment 43 has been stopped or suppressed by the motion control means 51, similarly to the first embodiment. The motion control means 51 executes (starts) the restriction of the motion of the attachment 43 in response to an operation signal from the attachment operation means of the operating device 35, for example.

[0052] In addition, in the construction machine 1, the posture threshold (safety range) of the attachment 43 may be defined in advance for each type of attachment 43, or may be arbitrarily set in response to the operation of the operating device .

[0053] In the above example, the construction machine 1 determines the angle of the drive shaft of the attachment 43 relative to the horizontal direction, but the present invention is not limited to this example. For example, in another example, the construction machine 1 may determine the angle of the drive shaft of the attachment 43 relative to the working surface of the object. In this case, the construction machine 1 detects the working surface of the object by a detection means such as a camera or an infrared sensor, and the notification means 53 may display the positional relationship of the working surface relative to the horizontal direction.

[0054] Next, a fourth embodiment of the monitoring operation of the attachment 43 in the construction machine 1 will be described. In the construction machine 1, the boom 41, the arm 42, and the attachment 43 of the working machine 4 are rotated to strike the attachment 43 against an object, but in the case of an attachment 43 such as a breaker 43a driven by a PTO, the attachment 43 may be broken by the striking operation. When an excavation operation or the like is normally performed by an attachment 43 such as a bucket, the boom 41, the arm 42, and the attachment 43 of the working machine 4 are rotated according to the operation, so that vibrations according to the operation are generated in the attachment 43. On the other hand, when a crushing operation or the like is normally performed by an attachment 43 such as a breaker 43a, the attachment 43 is operated by PTO drive with the rotation of the boom 41, the arm 42, and the attachment 43 stopped, so that vibrations specific to PTO drive are generated in the attachment 43. Therefore, when the PTO-driven attachment 43 performs a striking operation, abnormal vibration occurs in the attachment 43. Therefore, in the fourth embodiment, the construction machine 1 detects the abnormal vibration of the attachment 43 as a dangerous operation.

[0055] In this case, the information acquisition means 52 functions as vibration detection means that detects vibration of the attachment 43 and acquires it as operation information. The vibration detection means detects vibration of the attachment 43 according to the detection result of a vibration sensor provided near the attachment 43. The vibration detection means executes (starts) detection of vibration of the attachment 43 according to, for example, the operation of the work machine operation means of the operation device 35.

[0056] The information determination means 54 functions as vibration determination means for determining the usage state of the attachment 43 based on the vibration of the attachment 43 detected by the vibration detection means. The vibration determination means executes (starts) determination of the vibration of the attachment 43 in response to the operation of the work machine operation means of the operation device 35, for example.

[0057] For example, as shown in FIG. 13, the amplitude and period of vibration are relatively large in the striking operation of the attachment 43 (dotted line), and the amplitude and period of vibration are relatively small in the PTO drive of the attachment 43 (solid line). Therefore, when the type of the attachment 43 is a PTO-driven attachment 43 such as a breaker 43a, if the amplitude or period of the vibration of the attachment 43 is equal to or less than a predetermined amplitude threshold or period threshold, the vibration determination means determines that the use state of the attachment 43 is appropriate. On the other hand, when the amplitude or period of the vibration of the attachment 43 exceeds the amplitude threshold or period threshold, the vibration determination means determines that the use state of the attachment 43 is inappropriate and determines the operation of the attachment 43 as a dangerous operation. Note that, when the type of the attachment 43 is a bucket or other attachment 43 and the striking operation is assumed to be normal, the vibration determination means does not need to determine the vibration of the attachment 43.

[0058] The notification means 53 notifies the vibration determination result by the vibration determination means as an operating state. The notification means 53 may notify whether the usage state determined from the vibration of the attachment 43 is appropriate or inappropriate as an operating state. For example, the notification means 53 displays a message 90 notifying abnormal vibration of the attachment 43 and a message indicating whether the usage state of the attachment 43 is appropriate or inappropriate on the home screen 70 of the display device 34 as shown in FIG. 14 . The notification means 53 may notify abnormal vibration of the attachment 43 by lighting or blinking an alarm lamp, outputting a sound, or the like. The notification means 53 executes (starts) notification of the usage state in response to, for example, the operation of the work machine operation means of the operation device 35.

[0059] The operation control means 51 stops or suppresses and restricts the operation of the attachment 43 when the use state of the attachment 43 is inappropriate based on the vibration determination result of the attachment 43 by the vibration determination means. In this case, the notification means 53 notifies, as an operation state, that the operation of the attachment 43 has been stopped or suppressed by the operation control means 51, similarly to the first embodiment. The operation control means 51 executes (starts) restriction of the operation of the attachment 43 in response to an operation signal from the work machine operation means of the operation device 35, for example.

[0060] In addition, the construction machine 1 may have the amplitude threshold value and the period threshold value of the attachment 43 predefined for each type of attachment 43, or may be made arbitrarily set in response to the operation of the operation device .

[0061] Furthermore, the construction machine 1 may detect vibrations of the attachment 43 while the attachment 43 is being PTO driven, and determine whether the use state of the attachment 43 is appropriate or inappropriate. In this case, the construction machine 1 performs frequency analysis on the vibrations detected from the attachment 43 to determine whether or not the vibrations include a hammering motion.

[0062] As described above, according to this embodiment, the construction machine 1 comprises a work machine 4 attached to the body, an attachment 43 attached to the work machine 4 and operable, an operation control means 51 for controlling the operation of the attachment 43, an information acquisition means 52 for acquiring operation information of the attachment 43, and an alarm means 53 for notifying an operating state related to dangerous operation of the attachment 43 based on the operation information acquired by the information acquisition means 52.

[0063] As a result, by performing support processing for the PTO operation of the attachment 43 through processing for acquiring operation information and processing for notifying the operation status, etc., the worker can grasp the operation status related to dangerous operations of the attachment 43. Therefore, dangerous operations of the attachment 43 can be avoided and breakdowns of the attachment 43 can be prevented. Therefore, it is possible to provide a construction machine 1 that allows the attachment 43 to be used safely.

[0064] According to the first embodiment, in the construction machine 1, the information acquisition means 52 functions as a timing means that measures the operation time of the attachment 43 and acquires it as operation information, and the notification means 53 notifies the operation state based on the operation time. This allows the worker to know the operation time of the attachment 43 and be aware of recommended operations related to the operation time. Therefore, the worker can avoid dangerous operations of the attachment 43 based on the operation time, thereby preventing breakdown of the attachment 43.

[0065] The construction machine 1 further includes a time determination means of the information determination means 54 that determines the operation time measured by the timing means based on a predetermined time limit, and the notification means 53 notifies the time determination result by the time determination means as an operation state. In this way, by notifying the worker of the time determination result, such as the lapse of the time limit for the operation time of the attachment 43, the worker can be urged to stop or suppress the operation of the attachment 43. Therefore, by the worker avoiding dangerous operations of the attachment 43 based on the time determination result, breakdown of the attachment 43 can be prevented.

[0066] In the construction machine 1, the operation control means 51 suppresses the operation of the attachment 43 based on the time judgment result by the time judgment means, and the notification means 53 notifies the suppression of the operation of the attachment 43. This makes it possible to automatically suppress the operation of the attachment 43 according to the timing of the time judgment result, such as when the operation time of the attachment 43 has reached a time limit, and to reduce the load on the attachment 43. Therefore, dangerous operations of the attachment 43 can be automatically avoided, and breakdowns of the attachment 43 can be prevented.

[0067] In the construction machine 1, the operation control means 51 stops the operation of the attachment 43 based on the time judgment result by the time judgment means, and the notification means 53 notifies the stop of the operation of the attachment 43. This makes it possible to automatically stop the operation of the attachment 43 according to the timing of the time judgment result, such as when the operation time of the attachment 43 has reached a time limit, and to reduce the load on the attachment 43. Therefore, dangerous operations of the attachment 43 can be automatically avoided, and breakdowns of the attachment 43 can be prevented.

[0068] The construction machine 1 further includes an attachment operating means of the operating device 35 that accepts operation of the attachment 43, the timing means measures operation time in response to operation of the attachment 43 by the attachment operating means, and the notification means 53 notifies the operation state in response to operation of the attachment 43 by the attachment operating means. In this way, by executing the timing process and notification process only while the attachment 43 is in operation, it is possible to prevent malfunction of the support process for PTO operation of the attachment 43.

[0069] According to the second embodiment, in the construction machine 1, the attachment 43 is driven by hydraulic power of the hydraulic oil, the information acquisition means 52 functions as a temperature detection means that detects the temperature of the hydraulic oil and acquires it as operation information, and the notification means 53 notifies the operation state based on the operation time and the oil temperature. This makes it possible to more accurately grasp the operation time during which safe operation can be performed according to the oil temperature (viscosity) of the hydraulic oil, so that a more appropriate operation state can be notified even if the work environment changes.

[0070] In the construction machine 1, the operation control means 51 suppresses the operation of the attachment 43 based on the operation time and the oil temperature, and the notification means 53 notifies the suppression of the operation of the attachment 43. In this way, by more accurately grasping the operation time taking the oil temperature into consideration, it is possible to suppress the operation of the attachment 43 at a more appropriate timing and reduce the load on the attachment 43. Therefore, dangerous operations of the attachment 43 can be avoided at a more appropriate timing, and breakdowns of the attachment 43 can be prevented.

[0071] In the construction machine 1, the operation control means 51 stops the operation of the attachment 43 based on the operation time and the oil temperature, and the notification means 53 notifies the stop of the operation of the attachment 43. In this way, by more accurately grasping the operation time taking the oil temperature into consideration, it is possible to stop the operation of the attachment 43 at a more appropriate timing and reduce the load on the attachment 43. Therefore, dangerous operations of the attachment 43 can be avoided at a more appropriate timing, and breakdowns of the attachment 43 can be prevented.

[0072] According to the third embodiment, in the construction machine 1, the information acquisition means 52 functions as an attitude detection means that detects the attitude of the attachment 43 and acquires it as operation information, the construction machine 1 further includes an attitude determination means of the information determination means 54 that determines the attitude detected by the attitude detection means based on a predetermined attitude threshold, and the notification means 53 notifies the attitude determination result by the attitude determination means as an operation state. This allows the worker to grasp the actual attitude of the attachment 43 (for example, the angle in the front-rear direction) and put the attachment 43 into a safe attitude (recommended attitude). Therefore, dangerous operations of the attachment 43 can be avoided and breakdowns of the attachment 43 can be prevented.

[0073] According to the fourth embodiment, in the construction machine 1, the information acquisition means 52 functions as vibration detection means that detects vibration of the attachment 43 and acquires it as operation information, the construction machine 1 further includes vibration determination means that determines the use state of the attachment 43 based on the vibration detected by the vibration detection means, and the notification means 53 notifies the vibration determination result by the vibration determination means as the operation state. This makes it possible to notify the operator of the use state of the attachment 43 (for example, appropriate or inappropriate) based on the vibration of the attachment 43. Therefore, it is possible to prevent failure of the attachment 43 due to abnormal use, thereby maintaining the product life of the attachment 43 and ensuring the safe operation of the construction machine 1.

[0074] The construction machine 1 further includes a work machine operating means of the operating device 35 that accepts operation of the work machine 4, and the vibration detection means executes vibration detection of the attachment 43 in response to operation of the work machine 4 by the work machine operating means, and the notification means 53 executes notification of the operating state in response to operation of the work machine 4 by the work machine operating means. In this way, by executing the vibration detection process and notification process only while the work machine 4 is in operation, it is possible to prevent malfunction of the PTO operation assistance process of the attachment 43.

[0075] In the above embodiment, the construction machine 1 detects excessive continuous impacts by acquiring the operation time of the attachment 43, detects abnormal temperature by acquiring the oil temperature of the hydraulic oil and more accurately determines the operation time, detects unstable work such as diagonal striking or diagonal crane work by acquiring the attitude of the attachment 43, and detects improper striking by acquiring the vibration of the attachment 43. However, the present invention is not limited to these examples. For example, in another embodiment, the construction machine 1 can acquire various operation information of the attachment 43 and detect various dangerous operations such as improper prying work using the attachment 43, the need for grease lubrication of the attachment 43, work in an unstable place, jacking up or lifting of the shovel, improper slewing work or sideways work based on any of the operation information.

[0076] As another embodiment, the construction machine 1 detects the operating load on the attachment 43 such as a bucket, and detects a dangerous operation of the attachment 43 based on this operating load. For example, the construction machine 1 may perform a jack-up to lift up at least one of the pair of crawlers 21 by performing a predetermined operation on the boom 41 and the arm 42 with the attachment 43 such as a bucket on the ground. At this time, excessive force may be applied to the attachment 43, the boom 41, and the arm 42, which may cause them to break down or the construction machine 1 to tip over. Therefore, the construction machine 1 detects the operating load of the attachment 43 based on the inclination of the machine body, and detects such a jack-up state as a dangerous operation.

[0077] In this case, the information acquisition means 52 functions as load detection means that detects the operating load on the attachment 43, and the load detection means measures the inclination angle of the construction machine 1 with respect to the vertical direction using the inclination sensor 81 and acquires it as operation information. The load detection means executes (starts) measurement of the inclination angle in response to, for example, an operation signal from the attachment operation means of the operation device 35. The load detection means measures the inclination angle of the construction machine 1 in all horizontal directions, with the vertical direction being 0 degrees.

[0078] The notification means 53 notifies the operating state of the attachment 43 based on the inclination angle of the machine body measured by the load detection means as operation information of the attachment 43. The notification means 53 executes (starts) notification of the inclination angle, for example, in response to an operation signal from the attachment operation means of the operation device 35. For example, the notification means 53 displays, on the home screen 70 of the display device 34, a schematic diagram (not shown) showing the inclination angle of the machine body relative to the vertical direction and a schematic diagram (not shown) showing the position of the center of gravity of the machine body in the horizontal direction like a spirit level, as shown in FIG.

[0079] The information determination means 54 functions as load determination means for determining whether or not the operation of the attachment 43 is a dangerous operation based on the operating load of the attachment 43 detected by the load detection means, and the load determination means, for example, determines the inclination angle of the machine body measured by the load detection means based on a predetermined inclination angle threshold. The load determination means detects the jacked-up state of the construction machine 1 when the inclination angle reaches the inclination angle threshold, and determines the operation of the attachment 43 at this time as a dangerous operation. The load determination means executes (starts) a determination of the operation time in response to, for example, an operation signal from the attachment operating means of the operating device 35.

[0080] In this case, the notification means 53 notifies the result of the inclination determination made by the load determination means between the inclination angle and the inclination angle threshold as the operating state. For example, the notification means 53 notifies the operating state by displaying, as the inclination determination result, on the home screen 70 of the display device 34, that the inclination angle has reached the inclination angle threshold or that the construction machine 1 is in a jacked-up state. The notification means 53 may also notify the result of the inclination determination by turning on or blinking an alarm lamp, outputting a voice, or the like.

[0081] The operation control means 51 stops or inhibits and limits the operation of the attachment 43 based on the inclination determination result between the inclination angle and the inclination angle threshold by the load determination means. For example, the operation control means 51 detects the jacked-up state of the construction machine 1 when the inclination angle reaches the inclination angle threshold, and inhibits or stops the operation of the attachment 43. The operation control means 51 executes (starts) restriction of the operation of the attachment 43 in response to an operation signal from the attachment operation means of the operating device 35, for example.

[0082] In this case, the notification means 53 notifies, as an operating state, that the operation of the attachment 43 has been stopped or suppressed by the operation control means 51. The notification means 53 may notify in advance that the operation of the attachment 43 will be stopped or suppressed by the operation control means 51 before the stopping or suppression is carried out. Furthermore, when the operation control means 51 stops the operation of the attachment 43 based on the operation information of the attachment 43, the construction machine 1 may prohibit the resumption of operation of the attachment 43 for a predetermined stop time after the attachment 43 has been stopped.

[0083] In the above-mentioned other embodiment, an example has been described in which a jacked-up state of the construction machine 1 is detected as a dangerous operation based on the inclination of the construction machine 1, but the present invention is not limited to this example. For example, the construction machine 1 may detect a jacked-up state of the construction machine 1 as a dangerous operation based on the operating conditions of the boom 41, the arm 42, and the attachment 43 in addition to the inclination of the construction machine 1.

[0084] In the construction machine 1, the operating conditions of the boom 41, arm 42, and attachment 43 can be determined based on the pressure of each hydraulic oil acting on the boom 41, arm 42, and attachment 43. Therefore, the construction machine 1 is equipped with a pressure sensor (not shown) that detects the pressure of each hydraulic oil in each hydraulic actuator that drives the boom 41, arm 42, and attachment 43. The load detection means of the information acquisition means 52 measures the pressure of each hydraulic oil acting on the boom 41, arm 42, and attachment 43 using the pressure sensor, in addition to the tilt angle of the construction machine 1, and acquires it as operation information.

[0085] The notification means 53 notifies the operation state of the attachment 43 based on the tilt angle of the machine body, as well as the operation state of the attachment 43 based on the pressure of the hydraulic oil in each of the boom 41, arm 42, and attachment 43 measured by the load detection means as operation information of the attachment 43. For example, the notification means 53 displays, on the home screen 70 of the display device 34, a schematic diagram (not shown) showing the pressure of the hydraulic oil in each of the boom 41, arm 42, and attachment 43, and the positional relationship between the boom 41, arm 42, and attachment 43, as shown in FIG.

[0086] In addition to the above-mentioned tilt determination, the load determination means of the information determination means 54 determines the pressure of the hydraulic oil in each of the boom 41, arm 42, and attachment 43 measured by the load detection means based on a predetermined pressure threshold, and determines whether the operation of the attachment 43 is a dangerous operation or not based on the tilt determination result and the hydraulic pressure determination result. For example, the load determination means detects the jacked-up state of the construction machine 1 when it determines that the tilt angle has reached the tilt angle threshold and that the pressure of the hydraulic oil has reached the pressure threshold, and determines the operation of the attachment 43 at this time as a dangerous operation.

[0087] In this case, the notification means 53 notifies, as the operating state, the hydraulic pressure determination result of the hydraulic oil pressure of each of the boom 41, the arm 42, and the attachment 43 by the load determination means, in addition to the tilt determination result by the load determination means. For example, the notification means 53 notifies the operating state by displaying on the home screen 70 of the display device 34 that the tilt angle has reached the tilt angle threshold as the tilt determination result, that the hydraulic oil pressure has reached the pressure threshold as the hydraulic pressure determination result, and that the construction machine 1 is in a jacked-up state.

[0088] The operation control means 51 stops or inhibits and limits the operation of the attachment 43 when it detects that the construction machine 1 is in a jacked-up state based on the tilt determination result and the hydraulic pressure determination result by the load determination means.

[0089] Alternatively, in another embodiment, when the boom 41, the arm 42, and the attachment 43 are driven by the hydraulic actuators of the construction machine 1, the cylinders of the hydraulic actuators may reach their stroke ends. At this time, excessive force may be applied to the attachment 43, the boom 41, and the arm 42, which may cause breakdowns. Therefore, the construction machine 1 detects the operating load of the attachment 43 based on the operating conditions of the boom 41, the arm 42, and the attachment 43, and detects such a stroke end state as a dangerous operation.

[0090] In this case, the load detection means of the information acquiring means 52 measures the working angles of the boom 41, the arm 42 and the attachment 43 using angle sensors 83, 84 and 85 and acquires them as operation information. In addition, the load detection means of the information acquiring means 52 measures the pressure of each hydraulic oil acting on the boom 41, the arm 42 and the attachment 43 using pressure sensors and acquires them as operation information.

[0091] The notification means 53 notifies an operating state of the attachment 43 based on the working angles of the boom 41, the arm 42, and the attachment 43 and the pressure of each hydraulic oil measured by the load detection means as operation information of the attachment 43. For example, the notification means 53 displays, on the home screen 70 of the display device 34, a schematic diagram (not shown) showing the pressure of each hydraulic oil of the boom 41, the arm 42, and the attachment 43, and the positional relationship of each working angle of the boom 41, the arm 42, and the attachment 43, etc., as shown in FIG.

[0092] The load determination means of the information determination means 54 determines the work angles and hydraulic oil pressures of the boom 41, arm 42, and attachment 43 detected by the load detection means based on a predetermined work angle threshold and a predetermined pressure threshold, and determines whether the operation of the attachment 43 is a dangerous operation or not based on the angle determination result and the hydraulic pressure determination result. When the load determination means determines that the work angle of any of the boom 41, arm 42, and attachment 43 has reached the work angle threshold and that the hydraulic oil pressure has reached the pressure threshold, for example, it detects a stroke end state and determines the operation of the attachment 43 at this time as a dangerous operation.

[0093] In this case, the notification means 53 notifies the result of the angle determination between each work angle and the work angle threshold value by the load determination means and the result of the hydraulic pressure determination of each hydraulic oil pressure by the load determination means as the operating state. For example, the notification means 53 notifies the operating state by displaying on the home screen 70 of the display device 34 that the work angle has reached the work angle threshold value as the angle determination result, that the hydraulic pressure has reached the pressure threshold value as the hydraulic pressure determination result, or that the boom 41, the arm 42, or the attachment 43 is in a stroke end state.

[0094] The operation control means 51 stops or suppresses and limits the operation of the attachment 43 when it detects a stroke end state of the boom 41, arm 42 or attachment 43 based on the angle determination result and hydraulic pressure determination result by the load determination means.

[0095] Alternatively, in another embodiment, the construction machine 1 may be oriented sideways such that the upper rotating body 3 and the work machine 4 cross the traveling direction of the construction machine 1 caused by the lower traveling body 2 as a result of the upper rotating body 3 and the work machine 4 rotating relative to the lower traveling body 2. If the boom 41, the arm 42, and the attachment 43 are driven to perform work with the work machine 4 oriented sideways in this manner, excessive force may be applied to the attachment 43, the boom 41, and the arm 42, which may cause breakdowns or the construction machine 1 to tip over. Therefore, the construction machine 1 detects the operating load of the attachment 43 based on the rotation of the work machine 4 and the operating status of the boom 41, the arm 42, and the attachment 43, and detects such sideways work as a dangerous operation.

[0096] In this case, the load detection means of the information acquisition means 52 measures the rotation angle of the work implement 4 by the rotation sensor 82 such as a yaw rate sensor and acquires it as operation information. In addition, the load detection means of the information acquisition means 52 measures each of the work angles of the boom 41, the arm 42, and the attachment 43 and each of the pressures of the hydraulic oil and acquires it as operation information.

[0097] The notification means 53 notifies the operation state of the attachment 43 based on the rotation angle of the work implement 4 measured by the load detection means, the respective work angles of the boom 41, the arm 42, and the attachment 43, and the pressure of each hydraulic oil as operation information of the attachment 43. For example, the notification means 53 displays, on the home screen 70 of the display device 34, a schematic diagram (not shown) showing the positional relationship of the rotation angle of the work implement 4, the respective hydraulic oil pressures of the boom 41, the arm 42, and the attachment 43, the respective work angles of the boom 41, the arm 42, and the attachment 43, etc., as shown in FIG.

[0098] The load determination means of the information determination means 54 determines the swing angle of the work implement 4 detected by the load detection means based on a predetermined swing angle threshold, and determines the respective work angles and hydraulic oil pressures of the boom 41, arm 42, and attachment 43 based on a predetermined work angle threshold and a predetermined pressure threshold, and determines whether the operation of the attachment 43 is a dangerous operation based on the swing determination result, the angle determination result, and the hydraulic pressure determination result. For example, when the load determination means determines that the swing angle has reached the swing angle threshold and the construction machine 1 is facing sideways, and determines that the construction machine 1 is working based on the respective work angles of the boom 41, arm 42, and attachment 43 and the pressures of the hydraulic oils, it detects sideways work and determines the operation of the attachment 43 at this time as a dangerous operation.

[0099] In this case, the notification means 53 notifies, as the operating state, the result of the rotation determination between the rotation angle and the rotation angle threshold value by the load determination means, the result of the angle determination between each work angle and the work angle threshold value by the load determination means, and the result of the hydraulic pressure determination of each hydraulic oil by the load determination means. For example, the notification means 53 notifies the operating state by displaying on the home screen 70 of the display device 34, as the result of the rotation determination, that the rotation angle has reached the rotation angle threshold value and that the construction machine 1 is sideways, as the result of the angle determination, that the work angle has reached the work angle threshold value, as the result of the hydraulic pressure determination, that the pressure of the hydraulic oil has reached the pressure threshold value, that the construction machine 1 is working, and that the construction machine 1 is working sideways.

[0100] The operation control means 51 stops or inhibits and limits the operation of the attachment 43 when it detects lateral operation of the construction machine 1 based on the rotation determination result by the load determination means, the angle determination result, and the hydraulic pressure determination result.

[0101] In the above embodiment, an example has been described in which the construction machine 1 notifies the user by displaying the operation information and operation status of the attachment 43 on the home screen 70 of the display device 34, but the present invention is not limited to this example. For example, in other embodiments, the construction machine 1 may display the operation information and operation status of the attachment 43 on another screen of the display device 34.

[0102] The present invention can be modified as appropriate within the scope of the claims and the gist or concept of the invention that can be read from the entire specification, and the construction machine that includes such modifications is not included. How to control are also included in the technical concept of the present invention. [Explanation of symbols]

[0103] 1. Construction machinery 4 Work equipment 5. Control section 6 Memory section 31 Engine 34 Display device 35 Operating device 41 Boom 42 Arm 43 Attachment 43a Breaker 51 Operation control means 52 Information acquisition means 53 Notification means 54 Information judgment means (judgment means)

Claims

1. A method for controlling a construction machine capable of acquiring operation information of an attached attachment, comprising: A construction machinery control method, comprising: displaying, in a first area of ​​a screen of a display device, type information indicating the type of the attachment, together with operation time information indicating the continuous operation time of the attachment acquired as operation information, and time limit information indicating the time limit for which continuous operation of the attachment is permitted.

2. A construction machinery control method as described in claim 1, wherein, when the continuous operation time satisfies a predetermined condition, predetermined notification information is superimposed and displayed in a second area above the first area on the screen.

3. A method for controlling a construction machine as described in claim 2, wherein, when the continuous operation time reaches the time limit, the specified notification information is transitioned from first notification information to second notification information and displayed.

4. A method for controlling a construction machine as described in claim 3, wherein when the second alarm information is displayed as the specified alarm information, the attachment is in a stopped state.

5. A method for controlling a construction machine as described in claim 4, wherein after the first notification information is transitioned to the second notification information and displayed as the specified notification information, the attachment automatically stops.

Images