A hammering machine overload protection method and hammering machine

Abstract

The application discloses a hammering machine overload protection method and a hammering machine. The hammering machine overload protection method comprises the following steps: acquiring the acceleration of each detection position on the hammering machine within a predetermined time interval; determining the working condition of each detection position according to the relative relationship between the average acceleration of each detection position and the corresponding reference acceleration, and determining the working condition of the hammering machine according to the working condition of each detection position; wherein the working condition of the hammering machine comprises a severe working condition and a non-severe working condition; when it is determined that the working condition of the hammering machine at the current moment is the severe working condition, a warning instruction is sent to remind the operator to replace the striking position. The embodiment of the application can reduce the probability of damage failure of the hammering machine components caused by the hammer vibration, improve the service life of the whole machine components, and ensure the comfort of the driver.

Description

Technical Field

[0001] This invention relates to the field of automation control technology, and in particular to an overload protection method for a hammering machine and a hammering machine. Background Technology

[0002] As an indispensable piece of machinery in mining, hydraulic excavators equipped with hydraulic breakers have become common equipment for stone crushing. Manufacturers have developed professional hydraulic hammer crushers, which are among the main pieces of equipment in mining, boasting advantages such as high crushing force, high efficiency, speed, environmental friendliness, and safety. Their working principle involves a hydraulic system providing power, using hydraulic oil to drive a piston that compresses nitrogen gas to store energy. Under the combined action of the compressed nitrogen and the hydraulic system, the hammer generates kinetic energy and transmits the impact force to the object to be crushed.

[0003] To cope with different working conditions, hammer crushers can generally be selected with different tonnage models and different hammer specifications to deal with different stone working conditions. However, during normal operation, a hammer crusher often encounters changes in stone material. For example, as the mining depth increases, the hardness of the stone will also change. When encountering a situation where the hardness is too high and the striking force is insufficient to deform or crack the rock, the reaction force will cause the hammer crusher to vibrate violently. Prolonged vibration will inevitably greatly reduce the lifespan of the entire machine's components, leading to an increased failure rate and decreased operator comfort. Summary of the Invention

[0004] This invention provides an overload protection method and a hammering machine, which can reduce the probability of damage to hammering machine components caused by the vibration of the hammer, improve the lifespan of the entire machine, and ensure driver comfort.

[0005] In a first aspect, the present invention provides an overload protection method for a hammer machine, comprising: acquiring the acceleration of each detection position on the hammer machine within a predetermined time interval; determining the operating condition of the hammer machine based on the acceleration of each detection position; wherein the operating condition of the hammer machine includes severe operating conditions and non-severe operating conditions; and issuing a warning command when it is determined that the operating condition of the hammer machine at the current moment is a severe operating condition, so as to remind the operator to change the striking position.

[0006] Optionally, the step of determining the working condition of the hammer machine based on the acceleration at each detection position includes: determining the average acceleration at each detection position based on the acceleration at each detection position within a predetermined time interval; determining the working condition at each detection position based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration; and determining the working condition of the hammer machine based on the working condition at each detection position.

[0007] Optionally, the reference acceleration includes minimum acceleration and maximum acceleration; the working conditions at the detection positions include harsh working conditions, soft working conditions, and standard working conditions; the working conditions at each detection position are determined based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration; the steps for determining the working conditions of the hammer machine based on the working conditions at each detection position include: when the average acceleration at the detection position is less than or equal to the corresponding minimum acceleration, the working condition at the detection position is determined to be a soft working condition; when the average acceleration at the detection position is greater than the minimum acceleration and less than the maximum acceleration, the working condition at the detection position is determined to be a standard working condition; when the average acceleration at the detection position is greater than or equal to the maximum acceleration, the working condition at the detection position is determined to be a harsh working condition; when the working conditions at all detection positions are either soft working conditions or standard working conditions, the working condition of the hammer machine is determined to be a non-harsh working condition; when the working condition at at least one detection position is a harsh working condition, the working condition of the hammer machine is determined to be a harsh working condition.

[0008] Optionally, when it is determined that the current operating condition of the hammer is a severe condition, a warning command is issued to remind the operator to change the striking position. The overload protection method for the hammer also includes: determining whether the number of strikes under severe conditions within a set time period is greater than the set number; if the number of strikes under severe conditions within the set time period is greater than the set number, a power reduction signal is sent to the electric control pump to reduce the striking force of the hammer; if the number of strikes under severe conditions within the set time period is less than or equal to the set number, the process returns to continue executing the step of obtaining the acceleration of each detection position on the hammer within a predetermined time interval.

[0009] Optionally, the step of determining whether the number of times the hammer blows under adverse working conditions within a set time period is greater than the set number includes: determining whether there are adverse working conditions within the set time period before the current time; if there are adverse working conditions within the set time period before the current time, incrementing the number of times the hammer blows under adverse working conditions by 1, and determining whether the number of times the hammer blows under adverse working conditions is greater than the set number.

[0010] Optionally, the step of determining whether there are adverse working conditions within the set time period before the current time further includes: if there are no adverse working conditions within the set time period before the current time, then determine whether the number of adverse working condition attacks is equal to zero; if the number of adverse working condition attacks is equal to zero, then increment the number of adverse working condition attacks by 1, and determine whether the number of adverse working condition attacks is greater than the set number; if the number of adverse working condition attacks is not equal to zero, then set the number of adverse working condition attacks to zero.

[0011] Optionally, before the step of obtaining the acceleration at each detection position on the hammer machine within a predetermined time interval, the hammer machine overload protection method further includes: entering the overload protection mode according to the received command to enter the overload protection mode; and setting the number of blows under severe working conditions to zero.

[0012] Secondly, the present invention provides a hammer-beating machine, comprising: a control module and an acceleration sensor, wherein the acceleration sensor is disposed at a detection position of the hammer-beating machine and is communicatively connected to the control module for detecting the acceleration at the detection position; the control module is used to acquire the acceleration at each detection position on the hammer-beating machine within a predetermined time interval; and to determine the operating condition of the hammer-beating machine based on the acceleration at each detection position; wherein the operating condition of the hammer-beating machine includes severe operating conditions and non-severe operating conditions; when it is determined that the current operating condition of the hammer-beating machine is a severe operating condition, a warning command is issued to remind the operator to change the striking position.

[0013] Optionally, the detection location includes at least one of the following: inside the hood cover, armrest, control module, hammer, hydraulic pump, hydraulic valve, hydraulic oil tank, diesel tank, and seat.

[0014] Optionally, the hammer-beater also includes a prompting module; the prompting module is communicatively connected to the control module, and the prompting module is used to issue a prompting signal according to the warning instruction to remind the operator to change the striking position; and / or, it also includes an electric control pump, which is electrically connected to the control module; the control module is also used to determine whether the number of times the hammer-beater strikes under adverse working conditions within a set time period is greater than the set number; if the number of times the hammer-beater strikes under adverse working conditions within the set time period is greater than the set number, a power reduction signal is sent to the electric control pump to reduce the striking force of the hammer-beater.

[0015] The overload protection method for a hammer machine according to this invention obtains the acceleration at each detection position on the hammer machine within a predetermined time interval. Based on the acceleration at each detection position, the working condition of the hammer machine can be determined. When it is determined that the working condition of the hammer machine at the current moment is a severe working condition, a warning command is issued to remind the operator to change the striking position, thereby reducing the probability of damage to the hammer machine components caused by the vibration of the hammer, improving the lifespan of the entire machine components, and ensuring the comfort of the driver.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of an overload protection method for a hammer machine provided in an embodiment of the present invention;

[0019] Figure 2This is a flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention;

[0020] Figure 3 This is a flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention;

[0021] Figure 4 This is a flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention;

[0022] Figure 5 This is a flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of a hammering machine provided in an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] Figure 1 This is a flowchart of an overload protection method for a hammer machine provided in an embodiment of the present invention. This embodiment can be applied to the situation of overload protection for a hammer machine. The method can be executed by a control module, which can be implemented in software and / or hardware and can be integrated into the overall electrical control system of the hammer machine.

[0027] like Figure 1 As shown, the overload protection method for a hammer machine provided in this embodiment of the invention specifically includes the following steps:

[0028] S101. Obtain the acceleration of each detection position on the hammer machine within a predetermined time interval.

[0029] Optionally, the control module can acquire the acceleration at each detection position on the hammer machine within a predetermined time interval from the accelerometer at a fixed frequency or a non-fixed frequency. Optionally, to prevent the positive and negative values ​​of acceleration in opposite directions from canceling each other out, the acceleration acquired by the accelerometer is taken as the absolute value. Generally, during the operation of the hammer machine, the vibration acceleration in the vertical direction is the greatest, so the acceleration value can be selected from the vertical direction.

[0030] S102. Determine the working conditions of the hammer machine based on the acceleration at each detection location. The working conditions of the hammer machine include severe working conditions and non-severe working conditions.

[0031] In some embodiments, the control module can process the acceleration within a predetermined time interval at each detection position according to a preset algorithm. For example, the preset algorithm can be to obtain at least one of the maximum value, minimum value, and average value of the acceleration within the predetermined time interval at each detection position, and then determine the working condition of each detection position based on the result obtained after processing according to the preset algorithm, thereby determining the working condition of the hammer machine.

[0032] In some optional embodiments of the present invention, the operating condition of each detection position can be determined based on the maximum value of acceleration within a predetermined time interval at each detection position. For example, each detection position includes a first detection position. When the maximum value of acceleration at the first detection position is less than or equal to a set threshold, the operating condition of the first detection position is determined to be a non-adverse operating condition. When the maximum value of acceleration at the first detection position is greater than the set threshold, the operating condition of the first detection position is determined to be an adverse operating condition. When the operating conditions at all detection positions are non-adverse, the operating condition of the hammer machine is determined to be non-adverse. When the operating condition at at least one detection position is an adverse operating condition, the operating condition of the hammer machine is determined to be an adverse operating condition.

[0033] In some optional embodiments of the present invention, the operating condition of each detection position can be determined based on the minimum value of acceleration within a predetermined time interval at each detection position. For example, each detection position includes a first detection position. When the minimum value of acceleration at the first detection position is greater than or equal to a set threshold, the operating condition of the first detection position is determined to be a severe operating condition. When the minimum value of acceleration at the first detection position is less than the set threshold, the operating condition of the first detection position is determined to be a non-severe operating condition. When the operating conditions at all detection positions are non-severe, the operating condition of the hammer machine is determined to be non-severe. When the operating condition at at least one detection position is a severe operating condition, the operating condition of the hammer machine is determined to be a severe operating condition.

[0034] S103. When it is determined that the current working condition of the hammer machine is a severe working condition, a warning instruction is issued to remind the operator to change the striking position.

[0035] Specifically, when the average acceleration at at least one detection location is greater than or equal to the corresponding reference acceleration, indicating that the operating condition at at least one detection location is a severe condition, the current operating condition of the hammer crusher is determined to be severe. The control module can then send a warning command. This warning command can be sent to the prompting module included in the hammer crusher, to the terminal carried by the operator, or to a remote monitoring device, thereby reminding the operator to change the striking position. For example, the control module can send a warning command to the prompting module, which can then display a warning message: "Warning: Current breaking point is invalid; please change the breaking point as soon as possible." The warning message can appear in various forms, such as a dialog box or a scroll bar. When the prompting module issues a prompt signal based on the warning instruction, the operator can send a command to the control module to change the striking position through the prompting module. The control module then controls the hammer to change the striking position according to the command. Alternatively, the operator can choose not to send a command to the control module to change the striking position. In other words, when the hammer is in adverse working conditions, the overload protection method for the hammer in this embodiment only sends a warning instruction to the prompting module. Whether to change the striking position based on the warning instruction depends on the operator. The operator can determine whether to change the striking position based on the actual operating environment. This can prevent safety accidents caused by automatically changing the striking position when the hammer is in adverse working conditions. For example, if the area around the hammer is steep, automatically changing the striking position may cause the hammer to tip over and damage it; if there are areas around the hammer that cannot be struck, automatically changing the striking position may cause a collapse hazard, endangering the operator's safety.

[0036] In some embodiments, the control module can send a warning command to the terminal (such as a mobile phone) carried by the operator. The mobile phone can then emit an sound to remind the operator to change the striking position.

[0037] In some embodiments, the control module can send an alert instruction to a remote monitoring device, which can then forward the alert instruction to a prompt module (such as a display screen) included in the hammer-beating machine, thereby reminding the operator to change the striking position.

[0038] When encountering a hard object to be broken, changing the striking position may make it easier to break. This is because even hard objects are not monolithic; the hardness varies in different areas. If the operator continuously strikes the same spot, they may be consistently hitting the hardest part, while other areas may have cracks or be less hard and easier to break. Operators often overlook this. Therefore, this embodiment of the invention issues a warning command when it determines that the hammer machine is operating under adverse conditions, reminding the operator to change the striking position. This improves work efficiency and reduces fuel consumption.

[0039] The overload protection method for the hammer machine in this embodiment of the invention obtains the acceleration of each detection position on the hammer machine within a predetermined time interval. Based on the acceleration of each detection position, the working condition of the hammer machine can be determined. When it is determined that the working condition of the hammer machine at the current moment is a severe working condition, a warning command can be issued to remind the operator to change the striking position. This can reduce the probability of damage to the hammer machine components caused by the vibration of the jumping hammer, improve the life of the whole machine components, and ensure the comfort of the driver.

[0040] Figure 2 A flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention is shown below. Figure 2 As shown, the overload protection method for the hammer machine may include:

[0041] S201. Obtain the acceleration of each detection position on the hammer machine within a predetermined time interval.

[0042] S202. Determine the average acceleration of each detection position based on the acceleration of each detection position within a predetermined time interval.

[0043] In some embodiments, the control module can calculate the real-time average of the acceleration at each detection position within a predetermined time interval to obtain the average acceleration at each detection position within the predetermined time interval. For example, each detection position includes a first detection position and a second detection position, and the predetermined time interval is 3 seconds. Within 3 seconds, the acceleration at the first detection position has five values, such as a1, a2, a3, a4, and a5. Therefore, the average acceleration at the first detection position is ax1 = (a1 + a2 + a3 + a4 + a5) / 5. Similarly, the acceleration at the second detection position within 3 seconds has five values, such as a11, a21, a31, a41, and a51. Therefore, the average acceleration at the second detection position is ax2 = (a11 + a21 + a31 + a41 + a51) / 5. It is understood that the average acceleration ax1 at the first detection position can be equal to the average acceleration ax2 at the second detection position, or it can be different from the average acceleration ax2 at the second detection position.

[0044] S203. Determine the working conditions of each detection position based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration, and determine the working conditions of the hammer machine based on the working conditions of each detection position.

[0045] Specifically, the reference acceleration includes a minimum acceleration and a maximum acceleration. Each detection position corresponds to a set reference acceleration, which can be the same or different for each detection position. For example, the detection positions include a first detection position and a second detection position, where the minimum acceleration at the first detection position can be 5 m / s². 2 The maximum acceleration can be 10 m / s².2 The minimum acceleration at the second detection position can be 4 m / s². 2 The maximum acceleration can be 11 m / s². 2 .

[0046] Optionally, the operating conditions at each detection location include harsh and non-harsh operating conditions. The non-harsh operating conditions at each detection location include soft operating conditions and standard operating conditions. The operating condition at each detection location can be determined by comparing the average acceleration at each detection location with the corresponding reference acceleration. When the average acceleration at a detection location is less than or equal to the corresponding minimum acceleration, the operating condition at that location is determined to be a soft operating condition. When the average acceleration at a detection location is greater than the minimum acceleration but less than the maximum acceleration, the operating condition at that location is determined to be a standard operating condition. When the average acceleration at a detection location is greater than or equal to the maximum acceleration, the operating condition at that location is determined to be a harsh operating condition.

[0047] When the operating conditions at all detection positions are either soft or standard, the hammer-beating machine is determined to be in a non-harsh condition. Conversely, when the operating conditions at at least one detection position are harsh, the hammer-beating machine is determined to be in a harsh condition. For example, each detection position includes a first detection position and a second detection position. The control module can simultaneously determine whether a harsh condition exists at the first and second detection positions. When a harsh condition exists at at least one of the first and second detection positions (i.e., the average acceleration at the first and / or second detection positions is greater than or equal to the maximum acceleration), the hammer-beating machine is determined to be in a harsh condition. When neither the first nor the second detection position exhibits a harsh condition (i.e., the average acceleration at the first and second detection positions is less than the maximum acceleration), the hammer-beating machine is determined to be in a non-harsh condition. The absence of a harsh condition at both the first and second detection positions can indicate that the first detection position is in a soft condition and the second detection position is in a standard condition, or that both the first and second detection positions are in a soft condition, or that both the first and second detection positions are in a standard condition. When the hammer machine is not operating under harsh conditions, the operator can increase the frequency of blows to improve work efficiency.

[0048] When the hammer machine is determined to be in a non-adverse condition, the control module can refrain from issuing any commands to the electric control pump and instead send control commands to the prompting module, causing the prompting module to display the "non-adverse condition" information.

[0049] S204. When it is determined that the current working condition of the hammer machine is a severe working condition, a warning instruction shall be issued to remind the operator to change the striking position.

[0050] Figure 3 A flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention is shown below. Figure 3As shown, the overload protection method for the hammer machine may include:

[0051] S301. Obtain the acceleration of each detection position on the hammer machine within a predetermined time interval.

[0052] S302. Determine the operating conditions of the hammer machine based on the acceleration at each detection location.

[0053] S303. When it is determined that the current working condition of the hammer machine is a severe working condition, a warning instruction is issued to remind the operator to change the striking position.

[0054] S304. Determine whether the number of times the hammer blows under severe working conditions within the set time period is greater than the set number.

[0055] Specifically, when the hammer-beater is determined to be in a severe operating condition at the current moment, a warning command is issued to remind the operator to change the striking position. If the operator does not change the striking position, or if the hammer-beater remains in a severe operating condition after changing the striking position, and the number of strikes under severe conditions within a set time exceeds a set number, a power reduction signal is sent to the electronically controlled pump to reduce the power of the electronically controlled pump, thereby reducing the striking force of the hammer-beater and decreasing the probability of damage to hammer-beater components caused by hammer vibration, ensuring the operator's comfort and health. Therefore, if the number of strikes under severe conditions within a set time exceeds a set number, step S305 is executed; if the number of strikes under severe conditions within a set time is less than or equal to a set number, the process returns to continue executing step S301.

[0056] S305: Send a power reduction signal to the electric control pump to reduce the striking force of the hammer.

[0057] Figure 4 A flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention is shown below. Figure 4 As shown, the overload protection method for the hammer machine may include:

[0058] S401. Obtain the acceleration of each detection position on the hammer machine within a predetermined time interval.

[0059] S402. Determine the operating conditions of the hammer machine based on the acceleration at each detection location.

[0060] S403. When it is determined that the current working condition of the hammer machine is a severe working condition, a warning instruction is issued to remind the operator to change the striking position.

[0061] S404. Determine whether there are adverse working conditions within the set time period before the current moment.

[0062] Determining whether the hammer machine has experienced severe operating conditions within the set time period prior to the current moment is necessary because the interval between two severe operating conditions needs to be known.

[0063] If a severe situation has occurred within the set time period prior to the current moment, the number of severe impacts N = N + 1 is set. Then, it is determined whether the number of severe impacts N exceeds the set number. If the number of severe impacts exceeds the set number, a power reduction signal is sent to the electric control pump to reduce the impact force of the hammer and reduce the pump power. If the number of severe impacts is less than or equal to the set number, the process returns to continue executing the step of obtaining the acceleration of each detection position on the hammer within the predetermined time interval.

[0064] If there were no severe operating conditions within the set time period prior to the current moment, it means that the interval between two severe operating conditions is too long, which can be divided into the following two situations:

[0065] Scenario 1: The first time a severe working condition occurs at the current moment, that is, the first time a severe working condition has occurred since the start of ignition. At this time, the number of severe working condition attacks N = 0. Then, the number of severe working condition attacks is increased by one, that is, N = N + 1. Then, it is determined whether the number of severe working condition attacks N exceeds the set number.

[0066] Scenario 2: Although there were no severe operating conditions within the set time period before the current moment, severe operating conditions occurred within the set time period prior to the current moment. In this case, the number of severe operating condition attacks N≠0. Therefore, the number of severe operating condition attacks needs to be reset to zero to prevent the accumulated number of severe operating condition attacks from becoming too large due to long operating time, which could prematurely limit the power of the electronically controlled pump. Therefore, if a severe operating condition existed within the set time period before the current moment, proceed to step S4051. If no severe operating conditions existed within the set time period before the current moment, proceed to step S4052.

[0067] S4051, increment the number of severe working condition strikes by 1, and determine whether the number of severe working condition strikes is greater than the set number.

[0068] If the number of impacts under severe working conditions exceeds the set number, then proceed to step S4061; if the number of impacts under severe working conditions within the set time is less than or equal to the set number, then return to continue executing step S401.

[0069] S4052. Determine whether the number of impacts under severe working conditions is equal to zero.

[0070] If no adverse operating conditions existed within the set time period prior to the current moment, and this is the first time an adverse operating condition has occurred since ignition, then the number of adverse operating condition strikes N = 0. In this case, the number of adverse operating condition strikes is increased by one. Then, it is determined whether the number of adverse operating condition strikes N exceeds the set number. If the number of adverse operating condition strikes is zero, step S4051 is executed. If the number of adverse operating condition strikes is not zero, step S4062 is executed.

[0071] S4061. Send a power reduction signal to the electric control pump to reduce the striking force of the hammer.

[0072] S4062, making the number of strikes under severe working conditions equal to zero.

[0073] Figure 5 A flowchart of another overload protection method for a hammer machine provided in an embodiment of the present invention is shown below. Figure 5 As shown, the overload protection method for the hammer machine may include:

[0074] S501. Enter overload protection mode according to the received overload protection mode command.

[0075] Specifically, the operator can determine whether to send an overload protection mode command to the control module based on the actual working environment. For example, if the hammer crusher must strike objects with high hardness, meaning the actual working environment is harsh, the operator does not need to send an overload protection mode command to the control module, thus increasing the control module's operating speed. If the hammer crusher does not need to strike objects with high hardness, meaning the actual working environment is not harsh, the operator can send an overload protection mode command to the control module, causing the hammer crusher to enter overload protection mode.

[0076] S502, ensuring that the number of impacts under severe working conditions is zero.

[0077] S503. Obtain the acceleration of each detection position on the hammer machine within a predetermined time interval.

[0078] S504. Determine the average acceleration of each detection position based on the acceleration of each detection position within a predetermined time interval.

[0079] S505. Determine the working conditions of each detection position based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration, and determine the working conditions of the hammer machine based on the working conditions of each detection position.

[0080] S506. When it is determined that the current working condition of the hammer machine is a severe working condition, a warning instruction shall be issued to remind the operator to change the striking position.

[0081] S507. Determine whether there are severe operating conditions within the set time period before the current moment.

[0082] If a severe operating condition exists within the set time period prior to the current time, proceed to step S5081. If no severe operating condition exists within the set time period prior to the current time, proceed to step S5082.

[0083] S5081, increment the number of severe working condition strikes by 1, and determine whether the number of severe working condition strikes is greater than the set number.

[0084] If the number of impacts under severe working conditions exceeds the set number, proceed to step S509; if the number of impacts under severe working conditions within the set time is less than or equal to the set number, return to continue executing step S503.

[0085] S5082. Determine whether the number of impacts under severe working conditions is equal to zero.

[0086] If no adverse operating conditions existed within the set time period prior to the current moment, and this is the first time an adverse operating condition has occurred since ignition, then the number of adverse operating condition strikes N = 0. In this case, the number of adverse operating condition strikes is increased by one, i.e., N = N + 1. Then, it is determined whether the number of adverse operating condition strikes N exceeds the set number. If the number of adverse operating condition strikes is not zero, then the process returns to step S502.

[0087] S509. Send a power reduction signal to the electric control pump to reduce the striking force of the hammer.

[0088] Optionally, the pump power is reduced for ten minutes, after which the process returns to step S502 to begin a new determination.

[0089] Figure 6 This is a schematic diagram of the structure of a hammering machine provided in an embodiment of the present invention, for reference. Figure 6 The hammer-beating machine includes a control module 1 and an acceleration sensor 5. The acceleration sensor 5 is installed at the detection position of the hammer-beating machine and is communicatively connected to the control module 1 to detect the acceleration at the detection position. The control module 1 is used to acquire the acceleration at each detection position on the hammer-beating machine within a predetermined time interval. The operating condition of the hammer-beating machine is determined based on the acceleration at each detection position. The operating condition of the hammer-beating machine includes severe operating conditions and non-severe operating conditions. When it is determined that the current operating condition of the hammer-beating machine is a severe operating condition, a warning command is issued to remind the operator to change the striking position.

[0090] Optionally, the control module 1 may include a microcontroller. Optionally, the control module 1 may include a microcontroller, and may also include a digital signal processor (DSP) or a field-programmable gate array (FPGA). The control module 1 is used to execute the hammer machine overload protection method provided in any of the above embodiments, and the hammer machine possesses the corresponding beneficial effects of the hammer machine overload protection method.

[0091] Continue to refer to Figure 6The detection locations include at least one of the following: the inside of the hood cover 4, the handrail 7, the control module 1, the hammer 3, the hydraulic pump, the hydraulic valve, the hydraulic oil tank, the diesel tank, and the seat. Preferably, the acceleration sensor 5 is located in a position where the equipment is unlikely to be hit by flying debris, such as the inside of the hood cover 4.

[0092] Continue to refer to Figure 6 The hammer-beating machine also includes a prompting module 2; the prompting module 2 is communicatively connected to the control module 1, and is used to issue prompt signals according to warning instructions to remind the operator to change the striking position. The prompting module 2 can be a display screen.

[0093] And / or, the hammer machine also includes an electric control pump 6, which is electrically connected to the control module 1; the control module 1 is also used to determine whether the number of times the hammer machine strikes under severe working conditions within a set time period is greater than the set number; if the number of times the hammer machine strikes under severe working conditions within a set time period is greater than the set number, a power reduction signal is sent to the electric control pump 6 to reduce the striking force of the hammer machine.

[0094] Specifically, when the current operating condition of the hammer is determined to be a severe condition, the control module 1 issues a warning command to remind the operator to change the striking position. If the operator does not change the striking position or the hammer is still in a severe condition after changing the striking position, and the number of strikes in the severe condition within the set time exceeds the set number, a power reduction signal is sent to the electric control pump to reduce the power of the electric control pump, thereby reducing the striking force of the hammer and reducing the probability of damage to the hammer components caused by the vibration of the jumping hammer, thus ensuring the comfort and health of the driver.

[0095] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and no limitation is imposed herein.

[0096] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for overload protection of a hammer-making machine, characterized in that, include: The acceleration at each detection position on the hammer machine is obtained within a predetermined time interval; The operating condition of the hammer machine is determined based on the acceleration at each of the detection locations; wherein the operating condition of the hammer machine includes severe operating conditions and non-severe operating conditions. The step of determining the operating condition of the hammer machine based on the acceleration at each of the detection locations includes: The average acceleration of each detection position is determined based on the acceleration of each detection position within the predetermined time interval; The working conditions of each detection position are determined based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration, and the working conditions of the hammer machine are determined based on the working conditions of each detection position. The reference acceleration includes minimum acceleration and maximum acceleration; the working conditions at the detection location include harsh working conditions, soft working conditions, and standard working conditions; The step of determining the operating condition of each detection position based on the relative relationship between the average acceleration at each detection position and the corresponding reference acceleration, and determining the operating condition of the hammer machine based on the operating condition of each detection position, includes: When the average acceleration at the detection location is less than or equal to the corresponding minimum acceleration, the working condition at the detection location is determined to be the soft working condition. When the average acceleration at the detection location is greater than the minimum acceleration and less than the maximum acceleration, the working condition at the detection location is determined to be the standard working condition. When the average acceleration at the detection location is greater than or equal to the maximum acceleration, the working condition at the detection location is determined to be the severe working condition. When the working conditions at each of the aforementioned detection locations are either soft or standard, the working condition of the hammer machine is determined to be a non-harsh condition. When the operating conditions at at least one of the detection locations are adverse, the operating conditions of the hammer machine are determined to be adverse. When it is determined that the current working condition of the hammer machine is the severe working condition, a warning command is issued to remind the operator to change the striking position; Before the step of acquiring the acceleration at each detection position on the hammer machine within the predetermined time interval, the hammer machine overload protection method further includes: Enter overload protection mode upon receiving the overload protection mode command; Set the number of strikes under the severe working conditions to zero.

2. The overload protection method for a hammer-making machine according to claim 1, characterized in that, After determining that the current operating condition of the hammer machine is the severe operating condition and issuing a warning command to remind the operator to change the striking position, the overload protection method for the hammer machine further includes: Determine whether the number of times the hammer is struck under severe working conditions within a set time period is greater than the set number; If the number of blows under the severe working conditions exceeds the set number within the set time period, a power reduction signal is sent to the electronically controlled pump to reduce the striking force of the hammer. If the number of impacts under the severe working conditions is less than or equal to the set number within the set time period, then return to continue executing the step of obtaining the acceleration of each detection position on the hammer machine within the predetermined time interval.

3. The overload protection method for a hammer-beating machine according to claim 2, characterized in that, The step of determining whether the number of times the hammer is struck under severe working conditions within a set time period is greater than the set number includes: Determine whether adverse operating conditions exist within the set time period prior to the current moment; If a severe working condition exists within the set time period prior to the current moment, the number of severe working condition strikes is incremented by 1, and it is determined whether the number of severe working condition strikes is greater than the set number.

4. The overload protection method for a hammer-beating machine according to claim 3, characterized in that, The step of determining whether there are adverse working conditions within the set time period prior to the current moment further includes: If there are no severe working conditions within the set time period prior to the current moment, then determine whether the number of severe working conditions is equal to zero; If the number of severe working condition strikes is zero, then increment the number of severe working condition strikes by 1, and determine whether the number of severe working condition strikes is greater than the set number. If the number of severe working conditions is not equal to zero, then set the number of severe working conditions to zero.

5. A hammering machine, characterized in that, include: The control module and the acceleration sensor are provided. The control module is used to execute the overload protection method for the hammer machine according to any one of claims 1-4. The acceleration sensor is disposed at the detection position of the hammer machine and is communicatively connected to the control module for detecting the acceleration at the detection position. The control module is used to acquire the acceleration of each detection position on the hammer machine within a predetermined time interval; determine the working condition of the hammer machine based on the acceleration of each detection position; wherein the working condition of the hammer machine includes severe working conditions and non-severe working conditions; when it is determined that the working condition of the hammer machine at the current moment is the severe working condition, a warning command is issued to remind the operator to change the striking position; Before the step of obtaining the acceleration at each detection position on the hammer machine within the predetermined time interval, the method further includes: The control module enters the overload protection mode according to the received command to enter the overload protection mode; Set the number of strikes under the severe working conditions to zero.

6. The hammering machine according to claim 5, characterized in that, The detection locations include at least one of the following: the inside of the hood cover, the armrest, the control module, the hammer, the hydraulic pump, the hydraulic valve, the hydraulic oil tank, the diesel tank, and the seat.

7. The hammering machine according to claim 6, characterized in that, It also includes a prompt module; The prompting module is communicatively connected to the control module. The prompting module is used to issue a prompting signal according to the warning instruction to remind the operator to change the striking position. And / or, it also includes an electric control pump, which is electrically connected to the control module; the control module is also used to determine whether the number of times the hammer blows under severe working conditions within a set time period is greater than the set number; if the number of times the hammer blows under severe working conditions within the set time period is greater than the set number, a power reduction signal is sent to the electric control pump to reduce the striking force of the hammer blower.

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