Spray cooling system and excavator

Abstract

The utility model relates to the technical field of engineering machinery cooling, and provides a spraying cooling system and an excavator, which comprise a controller, a spraying module, a temperature sensor and at least one mounting clamp nested on the spraying module, the temperature sensor is mounted on the near side of the heating element and is in signal connection with the detection end of the controller; the spraying module is in signal connection with the control end of the controller and is provided with at least one water spraying outlet, and the water spraying outlets point to the heating element. The temperature sensor is installed on the near side of the heating element, when the temperature reaches a certain value, an alarm prompt can be triggered, the spraying module can be automatically triggered, water is sprayed to the heating element such as the thrust wheel so as to actively reduce the temperature, and the situation that a driver cannot take measures in time, and consequently the thrust wheel is damaged is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery cooling technical field especially, relates to a kind of spray cooling system and excavator. BACKGROUND

[0002] In the use process of excavator and other large engineering machinery, support wheel is an important component, which plays an important role in supporting and stabilizing the excavator. Especially in the long running process, the support wheel will generate a lot of heat due to friction and other reasons. If not cooled in time, it may cause the O-shaped sealing ring inside the support wheel to accelerate damage, causing excessive wear, noise, vibration and blocked rotation of the support wheel, shortening its life and even failure, thereby affecting the working efficiency and effectiveness of the excavator.

[0003] In the prior art, for the cooling of the support wheel of the excavator, the natural cooling method is usually used, which removes heat by air flow. Although this method is simple, it is not effective. For example, in a high temperature environment, if the excavator is in a long uphill or long downhill process, the natural cooling speed cannot meet the demand. In addition, some technical solutions also propose to cool the support wheel by spraying water, but this solution is usually based on manual control, that is, the driver manually turns on the water spraying switch when he feels that the support wheel is overheated. This method lacks real-time and accuracy, and cannot effectively cool in time. That is, the existing cooling means mainly has the following problems:

[0004] (1) The cooling effect is poor, and the natural cooling method cannot meet the cooling demand of the support wheel in a high temperature environment;

[0005] (2) Lack of real-time and accurate control method, need driver to operate manually, cannot cool in time, may cause damage to the support wheel. INVENTION CONTENTS

[0006] The utility model provides a kind of spray cooling system and excavator, solve the existing excavator support wheel cooling mode and exist cooling effect is poor, not in time due to artificial operation, and there is the technical problem of risk of part damage.

[0007] To solve the above technical problems, the utility model provides a kind of spray cooling system, including controller, spray module and temperature sensor, and at least one installation clip nested on the spray module;

[0008] The temperature sensor is installed on the proximal side of the heat generating element and is connected to the detection end signal of the controller;

[0009] The spray module is connected to the control end signal of the controller, and is provided with at least one water outlet, and the water outlet points to the heat generating element.

[0010] In further embodiments, the mounting clip comprises a support seat at the rear end and a supporting bracket at the front end, the support seat extends horizontally rearward for mounting and fixing, and the supporting bracket is mounted at the front end of the support seat; the supporting bracket is in a C-shaped structure, the outward protruding depth of the lower end of the C-shaped structure is greater than the outward protruding depth of the upper end, forming an upwardly inclined opening for nesting the spray module.

[0011] The present scheme sets a simple C-shaped structure as the supporting bracket, and sets the outward protruding depth of the lower end of the C-shaped structure to be greater than the outward protruding depth of the upper end, so as to support the spray module. The structure is simple, the layout difficulty is low, and the cost is low.

[0012] In further embodiments, the opening distance between the upper end and the lower end of the C-shaped structure is less than the cross-sectional diameter of the spray module.

[0013] In further embodiments, the cross section of the C-shaped structure is a sector with a central angle greater than 180°, and the inner diameter is greater than the outer diameter of the spray module.

[0014] The present scheme further optimizes the C-shaped structure. Whether the opening distance between the upper end and the lower end of the C-shaped structure is less than the cross-sectional diameter of the spray module, or the cross section of the C-shaped structure is a sector with a central angle greater than 180°, the spray module can be effectively prevented from falling off, and the installation stability is ensured.

[0015] In further embodiments, the spray module comprises a spray pipeline and at least one spray head arranged on the spray pipeline; the spray pipeline is nested on the mounting clip and arranged longitudinally parallel to the outside of the heating element, and the spray pipeline contains a cooling liquid; the rear end of the spray head extends upwardly and is inserted into the spray pipeline, and the front end points inwardly as a water outlet to direct the cooling liquid to the heating element to perform spray cooling.

[0016] In further embodiments, the spray module further comprises a water pump arranged at the input end of the spray pipeline, and an electromagnetic valve electrically connected with the water pump, and the driving end of the electromagnetic valve is signal connected with the control end of the controller.

[0017] The present scheme sets an electromagnetic valve connected with the water pump and the controller, and realizes precise control by electric driving.

[0018] In further embodiments, a water tank is further included, the water tank is connected with the spray pipeline through the water pump, and the water tank stores the cooling liquid.

[0019] In further embodiments, an auxiliary detection module is further included, the auxiliary detection module comprises a flow meter connected with the controller, and the flow meter is arranged on the walking motor on the body corresponding to the heating element.

[0020] In further embodiments, an alarm module connected to the controller is also included, the alarm module including an audible and visual alarm disposed in the control room.

[0021] The utility model also provides a kind of excavator, including the spray cooling system as described above, and lower walking system, walking motor, the water tank in the spray cooling system is arranged in the inside of lower walking system, the water outlet in the spray cooling system is directed to the supporting wheel on lower walking system to execute spray cooling.

[0022] The utility model has the advantages that:

[0023] (1) active cooling: by installing temperature sensor in the proximal side of heating element, when temperature reaches a certain value, not only alarm prompt is triggered, but also spray module is automatically triggered, water is sprayed to supporting wheel and other heating elements to actively reduce temperature, avoiding the case that supporting wheel is damaged due to that driver fails to take measures in time.

[0024] (2) cooling efficiency is improved: auxiliary detection module is set, flowmeter on walking motor corresponding to the main body of heating element is used to detect flow of walking motor to judge gear and walking time of walking while temperature signal is transmitted by temperature sensor, and then it is determined whether cooling is needed to realize automatic control (high speed and long time use will generate a large amount of heat), efficiency is improved, and working burden of driver is reduced.

[0025] (3) optimization design: spray module is arranged to lower walking system of excavator, spray pipeline is arranged to walking frame inside, water tank is reasonably arranged in lower walking system by modular structure, and then not only center of gravity balance of machine can be avoided, but also capacity of water tank can be increased, and use time of rain system is prolonged.

[0026] (4) real-time monitoring: temperature sensor and auxiliary detection module are used to monitor temperature of supporting wheel in real time, and temperature signal is transmitted to controller, when temperature reaches a certain value, controller can automatically trigger alarm prompt and trigger rain switch immediately, real-time monitoring and rapid response are realized.

[0027] (5) humanization design: audible and visual alarm disposed in control room (such as secondary alarm prompt and screen display screen arranged in cab) can remind driver to pay attention to temperature change, and manually control pressure and flow of water spray when necessary, convenience and safety of man-machine interaction are increased. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a module connection diagram of the spray cooling system provided by the utility model embodiment.

[0029] Figure 2 is the installation perspective view of the spraying pipeline and the mounting clamp provided by the embodiment of the utility model;

[0030] Figure 3 is the installation front view of another spraying pipeline provided by the embodiment of the utility model;

[0031] Figure 4 is the installation perspective view of the spraying cooling system in the excavator provided by the embodiment of the utility model; Figure 3 is the installation plan view of the spraying pipeline in the excavator provided by the embodiment of the utility model;

[0032] Figure 5 is the perspective structural view of the spraying pipeline in the excavator provided by the embodiment of the utility model; Figure 3

[0033] Figure 6

[0034] Figure 7 is the partial structure plan view in the spraying pipeline provided by the embodiment of the utility model; Figure 6

[0035] Figure 8 is the side view of the spraying pipeline provided by the embodiment of the utility model; Figure 6

[0036] Figure 9 is the relative position schematic view of the spraying cooling system and the supporting wheel provided by the embodiment of the utility model;

[0037] Figure 10 is the plan view of the spraying pipeline provided by the embodiment of the utility model; Figure 9

[0038] Figure 11 is the front view of the spraying pipeline provided by the embodiment of the utility model; Figure 9

[0039] Figure 12 is the left view of the spraying pipeline provided by the embodiment of the utility model; Figure 9

[0040] Wherein: controller 1, spraying module 2, spraying pipeline 21, nozzle 22, water pump 23, electromagnetic valve 24, water tank 25; temperature sensor 3, mounting clamp 4, support seat 41, supporting bracket 42; auxiliary detection module 5, alarm module 6, lower walking system 7, supporting wheel 8. DETAILED DESCRIPTION

[0041] ​​​​​​​The embodiments of the present application are described in detail below with reference to the drawings. The embodiments are presented only for the purpose of illustration and should not be understood as limiting the present application. The drawings are used for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present application, because many changes can be made to the present application without departing from the spirit and scope of the present application.

[0042] Embodiment 1

[0043] The spraying cooling system provided by the embodiment of the present application comprises a controller 1, a spraying module 2, a temperature sensor 3, and at least one mounting clamp 4. Figures 1-6 As shown in the figure, in the embodiment, the controller 1, the spraying module 2, the temperature sensor 3, and the mounting clamp 4 are provided.

[0044] The temperature sensor 3 is installed on the near side of the heating element and is connected to the detection end of the controller 1.

[0045] The spraying module 2 is connected to the control end of the controller 1 and is provided with at least one water outlet, which is directed to the heating element.

[0046] Specifically, for example, the temperature sensor 3 is installed on the carrier roller 8 of the excavator to detect the temperature of the carrier roller 8. The temperature sensor 3 is of Thermocouple Type K, the measurement range is -200℃ to 500℃, and the accuracy is ±1℃.

[0047] For example, the controller 1 is preferably a programmable controller 1 of Siemens S7-200.

[0048] In the embodiment, as shown in the figure, the mounting clamp 4 comprises a support seat 41 at the rear end and a supporting bracket 42 at the front end. Figure 2 The support seat 41 extends horizontally backward for installation and fixation, and the supporting bracket 42 is installed at the front end of the support seat 41. The supporting bracket 42 is of C-shaped structure, the outward protruding depth of the lower end part is greater than that of the upper end part, and an upwardly inclined opening is formed to nest the spraying module 2.

[0049] The C-shaped structure is provided as the supporting bracket 42, the outward protruding depth of the lower end part of the C-shaped structure is greater than that of the upper end part, and the spraying module 2 is supported, which is simple in structure, low in layout difficulty, and low in cost.

[0050] In the embodiment, the opening distance between the upper end part and the lower end part of the C-shaped structure is less than the cross-sectional diameter of the spraying module 2.

[0051] In the embodiment, the cross section of the C-shaped structure is a sector, the central angle of which is greater than 180°, and the inner diameter of which is greater than the outer diameter of the spraying module 2.

[0052] The embodiment further optimizes the C-shaped structure, whether the opening distance between the upper end and the lower end of the C-shaped structure is less than the cross-sectional diameter of the spray module 2 or the cross section of the C-shaped structure is a sector with a central angle greater than 180°, which can effectively prevent the spray module 2 from falling off and ensure the stability of the installation.

[0053] In the embodiment, referring to Figure 3 , Figure 4 , Figure 5 , the spray module 2 comprises a spray pipeline 21 and at least one spray head 22 arranged on the spray pipeline 21; the spray pipeline 21 is longitudinally arranged in parallel on the outside of the heating element on the mounting clamp 4, and the cooling liquid is arranged in the spray pipeline 21; the rear end of the spray head 22 extends upward and inserts into the spray pipeline 21, and the front end points inward as a water outlet to release the cooling liquid to the heating element to perform spray cooling.

[0054] For example, the diameter of the spray pipeline 21 is 10 mm, the diameter of the spray head 22 is 2 mm, and the water pressure is 0.5 MPa.

[0055] In the embodiment, the spray module 2 further comprises a water pump 23 arranged at the input end of the spray pipeline 21, and an electromagnetic valve 24 electrically connected with the water pump 23, and the driving end of the electromagnetic valve 24 is signal connected with the control end of the controller 1.

[0056] The embodiment sets the electromagnetic valve 24 connected with the water pump 23 and the controller 1, and realizes precise control by using electric drive.

[0057] In the embodiment, a water tank 25 is further included, which is connected with the spray pipeline 21 through the water pump 23; the water tank 25 stores the cooling liquid.

[0058] Preferably, a liquid level meter can be further arranged in the water tank 25, and the liquid level meter is connected with the controller 1 to realize real-time feedback of the water level in the water tank, so as to be replenished in time.

[0059] In the embodiment, an auxiliary detection module 5 is further included, which comprises a flow meter connected with the controller 1, and the flow meter is arranged on a walking motor on the heating element corresponding body (for example, an excavator).

[0060] The walking motor is a liquid flow motor, so the gear position and walking time of the excavator can be determined according to the feedback of the liquid flow meter, and then the auxiliary controller 1 can determine whether to perform cooling (a threshold is set for automatic determination, which is a conventional technical means in the art, and will not be described herein), and the double monitoring mechanism can more accurately grasp the working state of the road wheel 8 and timely discover the case of excessively high temperature, and provide more comprehensive decision basis in combination with the walking time.

[0061] In the embodiment, the controller 1 is further connected with an alarm module 6, and the alarm module 6 includes an audible and visual alarm arranged in the control room.

[0062] For example, an indicator light is arranged, and red light indicates that the temperature is too high, and green light indicates that the temperature is normal.

[0063] In other embodiments, a man-machine interaction interface can also be set according to needs, and the driver can be interacted through a screen display in the cab, so as to remind the driver to pay attention to the temperature condition, and provide an interface for controlling the spraying module 2, so that the driver can control the water pressure and flow according to actual needs, so as to achieve the best cooling effect, and the adaptability and practicality are improved by adjusting flexibly according to different working conditions and environmental conditions; meanwhile, the convenience and efficiency of man-machine interaction are improved, so that the driver can operate the rain system in time and accurately.

[0064] The cooling process of the embodiment is as follows:

[0065] 1. Automatic cooling

[0066] The controller 1 sets control parameters, including temperature alarm value, water spraying opening temperature, water spraying closing temperature, water spraying pressure and water spraying flow. For example, the temperature alarm value is set to 80℃, the water spraying opening temperature is set to 70℃, the water spraying closing temperature is set to 40℃, the water spraying pressure is set to 0.5MPa, and the water spraying flow is set to 10L / min.

[0067] The controller 1 collects the temperature signal transmitted by the temperature sensor 3 and the flow detected by the flow meter of the walking motor in real time. When the temperature sensor 3 detects that the temperature of the road wheel 8 is higher than 70℃, the controller 1 automatically drives the electromagnetic valve 24 to open the water spraying pump 23.

[0068] The water spraying device is opened to spray water to the road wheel 8 for cooling, and automatically responds to temperature changes without manual operation of the driver, so as to improve efficiency and safety. When the temperature sensor 3 detects that the temperature of the road wheel 8 is lower than 60℃, the controller 1 will automatically control the electromagnetic valve 24 to be closed to stop water spraying.

[0069] 2. Manual cooling

[0070] The driver can manually control the electromagnetic valve 24 according to actual needs to open or close the water spraying device. Meanwhile, the driver can also manually adjust the water spraying pressure and flow (for example, if the temperature reaches 80 DEG C, the red light of the alarm reminds the driver), so as to improve the cooling effect. In turn, the heat dissipation effect of the supporting wheel 8 is effectively improved, the equipment failure caused by excessively high temperature is avoided, and the reliability and service life of the equipment are improved.

[0071] Embodiment 2

[0072] The utility model embodiment further provides a kind of excavator, referring to Figures 6-12 , including the spray cooling system as described in above embodiment 1, and lower walking system 7, walking motor, the water tank 25 in the spray cooling system is arranged in the inside of the lower walking system 7, the water outlet in the spray cooling system points to the supporting wheel 8 on the lower walking system 7 to execute spray cooling.

[0073] The utility model has the advantages that:

[0074] (1) active cooling: by installing temperature sensor 3 in the near side of heating element, when temperature reaches a certain value, not only alarm prompt is triggered, but also spray module 2 is automatically triggered, temperature is actively reduced by spraying water to supporting wheel 8 and other heating elements, and the situation that supporting wheel 8 is damaged due to that driver fails to take measures in time is avoided.

[0075] (2) cooling efficiency is improved: auxiliary detection module 5 is arranged, and flowmeter arranged on walking motor corresponding to the main body of heating element is used to detect the flow of walking motor to judge the gear and walking time of walking while temperature signal is transmitted by temperature sensor 3, and then it is determined whether cooling is needed to realize automatic control (high speed and long time use will generate a large amount of heat), efficiency is improved, and the work burden of driver is reduced.

[0076] (3) optimization design: spray module 2 is arranged to lower walking system 7 of excavator, and spray pipeline 21 is arranged to walking frame inside, and water tank 25 is reasonably arranged in lower walking system 7 by modular structure, and then not only the gravity balance of machine can be avoided, but also the capacity of water tank 25 can be increased, and the use time of spray system is prolonged.

[0077] (4) real-time monitoring: temperature sensor 3 and auxiliary detection module 5 are used to monitor the temperature of supporting wheel 8 in real time, and temperature signal is transmitted to controller 1, when temperature reaches a certain value, controller 1 can immediately automatically trigger alarm prompt and trigger rain switch, and real-time monitoring and rapid response are realized.

[0078] (5) Humanized design: the sound and light alarm arranged in the control room (for example, the secondary alarm prompt and screen display screen are arranged in the cab) can remind the driver to pay attention to the temperature change, and manually control the pressure and flow of water spraying when necessary, which increases the convenience and safety of human-computer interaction.

[0079] The above embodiment is the preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model should be an equivalent replacement mode, which is all included in the protection scope of the utility model.

Claims

1. A spray cooling system, characterized by: The controller, the spraying module and the temperature sensor, and at least one mounting clip embedded on the spraying module; The temperature sensor is installed on the proximal side of the heating element and is connected to the detection end of the controller. The spraying module is connected to the control end of the controller and is provided with at least one water outlet pointing to the heating element.

2. A spray cooling system as claimed in claim 1, characterized in that The mounting clip comprises a support seat at the rear end and a supporting bracket at the front end, the support seat extends horizontally backward for mounting and fixing, and the supporting bracket is installed at the front end of the support seat; the supporting bracket is in a C-shaped structure, the outward protruding depth of the lower end is greater than that of the upper end, forming an upwardly inclined opening to safely embed the spraying module.

3. A spray cooling system as claimed in claim 2, wherein: The opening distance between the upper end and the lower end of the C-shaped structure is less than the cross-sectional diameter of the spraying module.

4. A spray cooling system as claimed in claim 2, wherein: The cross section of the C-shaped structure is a sector with a central angle greater than 180° and an inner diameter greater than the outer diameter of the spraying module.

5. A spray cooling system as claimed in claim 4, wherein: The spraying module comprises a spraying pipeline and at least one spray head arranged on the spraying pipeline; the spraying pipeline is embedded on the mounting clip and arranged longitudinally and parallel to the outside of the heating element, and contains cooling liquid; the rear end of the spray head extends upwardly and inserts into the spraying pipeline, and the front end points inwardly as a water outlet to release cooling liquid to the heating element to perform spraying cooling.

6. A spray cooling system as claimed in claim 5, wherein: The spraying module further comprises a water pump arranged at the input end of the spraying pipeline, and an electromagnetic valve electrically connected to the water pump, the driving end of the electromagnetic valve being connected to the control end of the controller.

7. A spray cooling system as claimed in claim 6, wherein: Further comprising a water tank connected to the spraying pipeline through the water pump; the water tank stores cooling liquid.

8. A spray cooling system as claimed in claim 4, wherein: Further comprising an auxiliary detection module comprising a flow meter connected to the controller, the flow meter being arranged on the walking motor on the body corresponding to the heating element.

9. A spray cooling system as claimed in claim 1, wherein: Further comprising an alarm module connected to the controller, the alarm module comprising an audible and visual alarm arranged in the control room.

10. An excavator characterized by: The spraying cooling system comprises a spraying cooling system as claimed in any one of claims 1-9, a lower walking system and a walking motor, the water tank in the spraying cooling system being arranged on the inside of the lower walking system, and the water outlet in the spraying cooling system pointing to the supporting roller on the lower walking system to perform spraying cooling.

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