Control system for grease supplementing of automatic lubricating system and excavator

Abstract

The utility model discloses a grease supplementing control system of an automatic lubricating system and an excavator. The grease supplementing control system comprises a grease level sensor, a controller, an indicating component and a cut-off electromagnetic valve. The grease level sensor is installed in the lubricating barrel and used for generating a signal indicating the lubricating grease level in the lubricating barrel. The controller has a signal processing function, is electrically connected with the grease level sensor and is used for acquiring a lubricating grease level signal in the lubricating barrel in real time; the indicating part has a prompting function and is electrically connected with the controller; the cut-off electromagnetic valve is connected in the grease supplementing pipeline and is electrically connected with the controller; when the grease level sensor transmits a signal that the lubricating grease level is detected to be at a preset high position to the controller, the controller controls the cut-off electromagnetic valve to cut off the grease supplementing pipeline and meanwhile controls the indicating component to remind an operator that filling is completed. The utility model provides a control system for grease supplement of an automatic lubricating system, which can effectively avoid waste and pollution of lubricating grease caused by excessive filling.

Description

Technical Field

[0001] The utility model relates to a control system for replenishing grease in an automatic lubrication system, belonging to the technical field of excavators. Background Art

[0002] Hydraulic excavators, especially large mining excavators, are large in size, making manual relubrication of lubrication points time-consuming and labor-intensive. Therefore, they are typically equipped with automatic lubrication systems. These systems store grease in a lubrication drum, which requires replenishment when the grease level is low. Mining users relubricate their excavators using dedicated service vehicles. Operators typically determine refill completion by observing the overflow or breathing holes in the lubrication drum to see if grease has overflowed. This results in grease waste and environmental pollution. Therefore, a system that automatically shuts off the relubrication circuit is needed to address this technical issue. Summary of the Invention

[0003] The utility model aims to provide a control system for replenishing grease in an automatic lubrication system, which can prevent grease from overflowing from a grease overflow hole or a breathing hole when replenishing grease in the automatic lubrication system, thereby causing waste and pollution.

[0004] The utility model is implemented according to the following technical solutions:

[0005] In a first aspect, the utility model provides a control system for replenishing grease in an automatic lubrication system, comprising:

[0006] A grease level sensor is installed in the lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel;

[0007] a controller having a signal processing function and electrically connected to the grease level sensor for obtaining a grease level signal in the lubrication barrel in real time;

[0008] An indicating component, having a prompting function and electrically connected to the controller;

[0009] The cut-off solenoid valve is connected in the grease replenishing pipeline and is electrically connected to the controller; when the grease level sensor detects that the grease level is at a preset high level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to cut off the grease replenishing pipeline and at the same time controls the indicator component to prompt the operator that the filling is completed.

[0010] In some embodiments, the indicating component is an indicator light.

[0011] In some embodiments, the indicating component further includes a buzzer, and the controller controls the indicator light to light up while controlling the buzzer to sound an alarm.

[0012] In some embodiments, the grease level sensor is configured as an ultrasonic ranging sensor for measuring the distance from the top of the lubrication barrel to the current liquid level; or, the grease level sensor is configured as a float type liquid level sensor, which can determine the current liquid level based on the position of the float.

[0013] In a second aspect, the utility model provides an excavator, comprising the above-mentioned automatic lubrication system grease replenishing control system.

[0014] In a third aspect, the present invention provides a control system for replenishing grease in an automatic lubrication system, comprising:

[0015] A grease level sensor is installed in the lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel;

[0016] a controller having a signal processing function and electrically connected to the grease level sensor for obtaining a grease level signal in the lubrication barrel in real time;

[0017] An indicating component, having a prompting function and electrically connected to the controller;

[0018] The cut-off solenoid valve is connected in the grease replenishing pipeline and is electrically connected to the controller; when the grease level sensor detects that the grease level is at a preset low level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to connect the grease replenishing pipeline, and at the same time controls the indicator component to prompt the operator to replenish grease; when the grease level sensor detects that the grease level is at a preset high level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to cut off the grease replenishing pipeline, and at the same time controls the indicator component to prompt the operator that the filling is completed.

[0019] In some embodiments, the indicating component includes an indicator light having two different luminous colors when lit for prompting.

[0020] In some embodiments, the indicating component further includes a buzzer, and the controller controls the indicator light to light up while controlling the buzzer to sound an alarm.

[0021] In some embodiments, the grease level sensor is configured as an ultrasonic ranging sensor for measuring the distance from the top of the lubrication barrel to the current liquid level; or, the grease level sensor is configured as a float type liquid level sensor, which can determine the current liquid level based on the position of the float.

[0022] In a fourth aspect, the utility model provides an excavator, comprising the above-mentioned automatic lubrication system grease replenishing control system.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a control system for replenishing grease of an automatic lubrication system, which can effectively avoid waste and pollution of grease caused by excessive filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0026] In the attached figure:

[0027] Figure 1 This is a schematic diagram of a control system for replenishing grease in an automatic lubrication system according to the present invention.

[0028] Figure identification: 1-controller, 2-fat level sensor, 3-indicator light, 4-cut-off solenoid valve.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] Example 1: Figure 1As shown, a control system for grease replenishment of an automatic lubrication system includes a grease level sensor 2, a controller 1, an indicating component and a cut-off solenoid valve 4; the grease level sensor 2 is installed in a lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel; the controller 1 has a signal processing function and is electrically connected to the grease level sensor 2 for obtaining the grease level signal in the lubrication barrel in real time; the indicating component has a prompting function and is electrically connected to the controller 1; the cut-off solenoid valve 4 is connected to the grease replenishment pipeline and is electrically connected to the controller 1; when the grease level sensor 2 detects that the grease level is at a preset high level and transmits a signal to the controller 1, the controller 1 controls the cut-off solenoid valve 4 to cut off the grease replenishment pipeline and simultaneously controls the indicating component to prompt the operator that the filling is complete.

[0033] In a preferred solution, the indicating component is an indicator light 3 .

[0034] In a further solution, the indicating component further includes a buzzer, and the controller 1 controls the indicator light 3 to light up while controlling the buzzer to sound an alarm.

[0035] It should be noted that the controller 1 in the circuit may be an electronic controller that can operate in a logical manner, execute control algorithms, store and retrieve data, and perform other required operations. The term "controller" is intended to be used in its broadest sense to include controllers or microprocessors that can control various functions and operations of the machine.

[0036] A grease level sensor 2 in the circuit is installed in the lubrication drum and provides data indicating the level of the grease storage device. The term "sensor" is intended to be used in its broadest sense to include one or more sensor components that can sense the relevant level information. In one embodiment, the grease level sensor can be configured as an ultrasonic ranging sensor, measuring the distance from the top of the storage device to the current level. Controller 1 can determine the current grease level based on this distance.

[0037] In another embodiment, the fat level sensor may be configured as a float-type liquid level sensor, and the current liquid level may be determined according to the position of the float.

[0038] The indicator light 3 in the circuit can send a prompt signal and is installed on the lubrication barrel to indicate to the operator that the filling operation has been completed. The term "indicator light" is used in its broadest sense to include various devices that can provide an indication effect.

[0039] The shut-off solenoid valve 4 is installed on the filling pipeline and has the function of connecting and disconnecting the grease filling pipeline, and can execute the logic control of the controller 1.

[0040] The working process of a control system for automatic lubrication system grease replenishment:

[0041] Excavators with automatic lubrication require refilling of grease from their grease storage devices. These storage devices, typically lubrication barrels, require breathing holes or overflow holes to prevent internal pressure from building up and preventing refilling. During regreasing operations, excessive grease filling often causes grease to leak out, resulting in waste and pollution. Controller 1 obtains information about the grease level in the lubrication barrel by acquiring the grease level signal from grease sensor 2. When the liquid level rises to the set position during regreasing, controller 1 controls solenoid valve 4 to shut off the grease replenishment line. This disconnects the grease replenishment line from the atmosphere, generating pressure that causes the filling gun to automatically trip. Simultaneously, an indicator light sends a signal indicating that the regreasing operation is complete.

[0042] Example 2: Figure 1 As shown, a control system for grease replenishment of an automatic lubrication system includes a grease level sensor 2, a controller 1, an indicating component and a cut-off solenoid valve 4; the grease level sensor 2 is installed in the lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel; the controller 1 has a signal processing function and is electrically connected to the grease level sensor 2 for obtaining the grease level signal in the lubrication barrel in real time; the indicating component has a prompting function and is electrically connected to the controller 1; the cut-off solenoid valve 4 is connected to the grease replenishment pipeline and is electrically connected to the controller 1; when the grease level sensor 2 detects that the grease level is at a preset low level and transmits a signal to the controller 1, the controller 1 controls the cut-off solenoid valve 4 to connect the grease replenishment pipeline and controls the indicating component to prompt the operator to replenish grease; when the grease level sensor 2 detects that the grease level is at a preset high level and transmits a signal to the controller 1, the controller 1 controls the cut-off solenoid valve 4 to cut off the grease replenishment pipeline and controls the indicating component to prompt the operator that the filling is completed.

[0043] In a preferred solution, the indicating component includes an indicator light 3 having two different luminous colors when lit for prompting.

[0044] In a further solution, the indicating component further includes a buzzer, and the controller controls the indicator light 3 to light up while controlling the buzzer to sound an alarm.

[0045] It should be noted that the controller 1 in the circuit may be an electronic controller that can operate in a logical manner, execute control algorithms, store and retrieve data, and perform other required operations. The term "controller" is intended to be used in its broadest sense to include controllers or microprocessors that can control various functions and operations of the machine.

[0046] A grease level sensor 2 in the circuit is installed in the lubrication drum and provides data indicating the level of the grease storage device. The term "sensor" is intended to be used in its broadest sense to include one or more sensor components that can sense the relevant level information. In one embodiment, the grease level sensor can be configured as an ultrasonic ranging sensor, measuring the distance from the top of the storage device to the current level. Controller 1 can determine the current grease level based on this distance.

[0047] In another embodiment, the fat level sensor may be configured as a float-type liquid level sensor, and the current liquid level may be determined according to the position of the float.

[0048] The indicator light 3 in the circuit can send a prompt signal and is installed on the lubrication barrel to indicate to the operator that the filling operation has been completed. The term "indicator light" is used in its broadest sense to include various devices that can provide an indication effect.

[0049] The shut-off solenoid valve 4 is installed on the filling pipeline and has the function of connecting and disconnecting the grease filling pipeline, and can execute the logic control of the controller 1.

[0050] The working process of a control system for automatic lubrication system grease replenishment:

[0051] Excavators with automatic lubrication function need to add grease to their grease storage device. Such storage devices usually need breathing holes or overflow holes in the lubrication barrel to avoid internal pressure and inability to refill. During the grease refilling operation, excessive grease often flows out, causing waste and pollution. The controller 1 obtains the grease level information in the lubrication barrel by obtaining the grease level signal from the grease sensor 2. When the grease level is lower than the set value,

[0052] Controller 1 controls shutoff solenoid valve 4 to connect the grease refill line, allowing grease refilling to proceed. When the liquid level rises to a set point during grease refilling, controller 1 controls shutoff solenoid valve 4 to disconnect the grease refill line. This isolates the grease refill line from the atmosphere, generating pressure that automatically triggers the filling gun to trip. Simultaneously, indicator light 3 signals the completion of the grease refilling operation.

[0053] The excavator provided by the present invention is described below. The excavator described below and the control system for replenishing grease of the automatic lubrication system described above can be referred to in correspondence with each other.

[0054] The utility model provides an engineering machine, which may include a control system for replenishing grease in an automatic lubrication system as described in any one of the above embodiments.

[0055] The beneficial effects achieved by the engineering machinery provided by the present invention are consistent with the beneficial effects achieved by the control system for grease replenishment of the automatic lubrication system provided by the present invention, and will not be described in detail here.

[0056] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0057] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0058] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A control system for replenishing grease in an automatic lubrication system, characterized in that: include: A grease level sensor is installed in the lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel; A controller, having a signal processing function, is electrically connected to the grease level sensor and is used to obtain a grease level signal in the lubrication barrel in real time; An indicating component, having a prompting function and electrically connected to the controller; The cut-off solenoid valve is connected in the grease replenishing pipeline and is electrically connected to the controller; when the grease level sensor detects that the grease level is at a preset high level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to cut off the grease replenishing pipeline and at the same time controls the indicator component to prompt the operator that the filling is completed.

2. The control system for grease replenishment of an automatic lubrication system according to claim 1, characterized in that: The indicating component is an indicator light.

3. The control system for replenishing grease in an automatic lubrication system according to claim 2, characterized in that: The indicating component also includes a buzzer, and the controller controls the indicator light to light up while controlling the buzzer to sound an alarm.

4. The control system for grease replenishment of an automatic lubrication system according to claim 1, characterized in that: The grease level sensor is configured as an ultrasonic distance sensor for measuring the distance from the top of the lubrication barrel to the current liquid level; or the grease level sensor is configured as a float type liquid level sensor, which can determine the current liquid level according to the position of the float.

5. An excavator, characterized in that: A control system for replenishing grease in an automatic lubrication system comprising the control system according to any one of claims 1 to 4.

6. A control system for replenishing grease in an automatic lubrication system, characterized in that: include: A grease level sensor is installed in the lubrication barrel and is used to generate a signal indicating the grease level in the lubrication barrel; A controller, having a signal processing function, is electrically connected to the grease level sensor and is used to obtain a grease level signal in the lubrication barrel in real time; An indicating component, having a prompting function and electrically connected to the controller; The cut-off solenoid valve is connected in the grease replenishing pipeline and is electrically connected to the controller; when the grease level sensor detects that the grease level is at a preset low level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to connect the grease replenishing pipeline, and at the same time controls the indicator component to prompt the operator to replenish grease; when the grease level sensor detects that the grease level is at a preset high level and transmits a signal to the controller, the controller controls the cut-off solenoid valve to cut off the grease replenishing pipeline, and at the same time controls the indicator component to prompt the operator that the filling is completed.

7. The control system for replenishing grease in an automatic lubrication system according to claim 6, characterized in that: The indicating component includes an indicator light having two different luminous colors when lit for prompting.

8. The control system for replenishing grease in an automatic lubrication system according to claim 7, characterized in that: The indicating component also includes a buzzer, and the controller controls the indicator light to light up while controlling the buzzer to sound an alarm.

9. The control system for replenishing grease in an automatic lubrication system according to claim 6, characterized in that: The grease level sensor is configured as an ultrasonic distance sensor for measuring the distance from the top of the lubrication barrel to the current liquid level; or the grease level sensor is configured as a float type liquid level sensor, which can determine the current liquid level according to the position of the float.

10. An excavator, characterized in that: A control system for replenishing grease in an automatic lubrication system comprising the control system according to any one of claims 6 to 9.

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