Automatic induction efficient dust falling and anti-freezing solution spraying device of excavator

Abstract

The utility model discloses an automatic induction efficient dust falling and anti-freezing solution spraying device of an excavator, which relates to the technical field of open pit coal mining and engineering machinery and comprises a valve, an efficient dust falling mechanism and an anti-freezing solution spraying mechanism. The valve is provided with a change-over switch, a first inlet, a second inlet and an outlet, the efficient dust falling mechanism comprises a water storage tank, a spray head assembly, a control module and a dust concentration sensor, the water storage tank is communicated with the first inlet, the anti-freezing solution spraying mechanism comprises an anti-freezing solution tank, and the anti-freezing solution tank is communicated with the second inlet. According to the technical scheme, the water storage tank and the anti-freezing solution tank share the valve and the spray head assembly, on the premise that too many complex structures are not added, integration of the efficient dust falling function and the anti-freezing function is achieved, different requirements in different seasons and working environments can be met, and the universality, adaptability and flexibility of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to open -pit coal mining and engineering machinery technical field especially relates to a kind of excavator automatic response high -efficient dust fall and anti-freezing liquid spraying device. BACKGROUND

[0002] In the field of open-pit mining, hydraulic backhoe excavator-dump truck-semi-fixed crushing station-belt conveyor process is a kind of efficient and economic raw coal mining method. However, due to coal quality characteristics and other factors, on the one hand, excavator will raise a large amount of coal dust in the process of coal mining, resulting in poor working environment, increasing the risk of pneumoconiosis of on-site workers, in addition, "Open-pit coal mine air pollution prevention and control management method" clearly stipulates that the operating unit must strengthen the dust control work of open-pit mine; on the other hand, winter in Zhundong area is very cold, coal is easy to freeze with conveying belt and car during mining, loading and transportation, which affects the normal operation of equipment and unloading efficiency. The existing mobile dust fall equipment is usually arranged outside the working area, and the dust fall effect is not good, which is difficult to effectively suppress dust at the working site, and the traditional dust fall equipment also lacks anti-freezing liquid spraying function, which cannot effectively prevent coal from freezing on the car hopper in extremely cold weather in winter. SUMMARY

[0003] The main purpose of the utility model is to provide a kind of excavator automatic response high -efficient dust fall and anti-freezing liquid spraying device, to solve the problem of how to efficiently reduce dust and prevent freezing.

[0004] To achieve the above purpose, the utility model provides a kind of excavator automatic response high -efficient dust fall and anti-freezing liquid spraying device, applied to excavator, the excavator includes machine body, counterweight box, bucket rod and bucket, the counterweight box is connected with the machine body, the bucket rod is rotatably installed on the machine body, the bucket is rotatably installed on the end of the bucket rod away from the machine body, the excavator automatic response high -efficient dust fall and anti-freezing liquid spraying device includes:

[0005] Valve, switch switch, first inlet, second inlet and outlet are provided on the valve, the switch switch is used to switch the first inlet and the outlet communication or the second inlet and the outlet communication;

[0006] Efficient dust fall mechanism, the efficient dust fall mechanism includes water storage tank, spray head assembly, control module and dust concentration sensor, the water storage tank is connected with the counterweight box, the spray head assembly and the dust concentration sensor are connected with the bucket rod, the spray surface of the spray head assembly is arranged towards the working surface of the bucket, the water storage tank is communicated with the first inlet, the spray head assembly is communicated with the outlet, the spray head assembly and the dust concentration sensor are electrically connected with the control module;

[0007] The anti-freezing liquid spraying mechanism comprises an anti-freezing liquid tank connected with the counterweight tank, and the anti-freezing liquid tank is communicated with the second inlet.

[0008] In an embodiment, the spray head assembly comprises a conveying component and a spray head component, the spray head component comprises a mounting frame and a plurality of spray heads, the conveying component is electrically connected with the control module, the conveying component and the arm are both connected with the mounting frame, the plurality of spray heads are arranged at intervals on the mounting frame, and each spray head is communicated with the conveying component, the spray surface of each spray head is arranged towards the working surface of the bucket, and one end of the conveying component away from the mounting frame is communicated with the outlet.

[0009] In an embodiment, the mounting frame is provided with a first end, a second end, a third end and a fourth end, the first end and the second end are arranged on both sides of the mounting frame along the thickness direction of the arm respectively, the third end is arranged on the side of the mounting frame away from the arm, and the fourth end is arranged on the side of the mounting frame away from the conveying component; the plurality of spray heads are respectively a first spray head, a second spray head, a third spray head and a fourth spray head, the first spray head is arranged on the first end, the second spray head is arranged on the second end, the third spray head is arranged on the third end, and the fourth spray head is arranged on the fourth end.

[0010] In an embodiment, the number of the spray head components is at least two, and at least two spray head components are arranged on both sides of the arm along the width direction respectively.

[0011] In an embodiment, both ends of the arm are respectively a first connecting end and a second connecting end, the first connecting end is rotatably mounted on the machine body, and the bucket is rotatably mounted on the second connecting end.

[0012] The distance between the dust concentration sensor and the first connecting end is equal to the distance between the dust concentration sensor and the second connecting end.

[0013] And / or,

[0014] The distance between the spray head component and the first connecting end is equal to the distance between the spray head component and the second connecting end.

[0015] In an embodiment, the conveying component comprises a pipeline connecting piece and a booster, the booster is electrically connected with the control module, the inlet of the booster is communicated with the outlet, both ends of the pipeline connecting piece are communicated with the outlet of the booster and each spray head respectively, and the mounting frame is connected with one end of the pipeline connecting piece away from the booster.

[0016] In an embodiment, the machine body comprises a main body and a movable arm, the counterweight box is connected to the main body, the movable arm is rotatably mounted to the main body, the arm is rotatably mounted to the movable arm at an end away from the main body, the pipeline connector comprises a water delivery pipeline and a water delivery hose, the water delivery pipeline comprises a first pipeline, a second pipeline and a third pipeline, the water delivery hose comprises a first hose and a second hose, the first pipeline is connected to the main body, the second pipeline is connected to the movable arm, the third pipeline is connected to the arm, the first pipeline is in communication with the pressure booster, two ends of the first hose are respectively in communication with an end of the first pipeline away from the pressure booster and the second pipeline, two ends of the second hose are respectively in communication with an end of the second pipeline away from the first hose and the third pipeline, and an end of the third pipeline away from the second hose is connected to the mounting bracket, and each of the spray heads is in communication with the third pipeline.

[0017] In an embodiment, the excavator further comprises a cab connected to the main body, and the excavator automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a control switch arranged in the cab.

[0018] The control switch is electrically connected to the valve.

[0019] And / or,

[0020] The control switch is electrically connected to the control module.

[0021] In an embodiment, the first inlet is arranged at the bottom of the valve, the outlet is arranged at the top of the valve, the second inlet is arranged at the side of the valve, and the anti-freezing liquid tank is located at the top of the water storage tank.

[0022] In an embodiment, the excavator automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a first damping pad located between the anti-freezing liquid tank and the water storage tank, and two sides of the first damping pad are respectively in abutment with the anti-freezing liquid tank and the water storage tank.

[0023] And / or,

[0024] The excavator automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a second damping pad located between the counterweight box and the water storage tank, and two sides of the second damping pad are respectively in abutment with the counterweight box and the water storage tank.

[0025] In the embodiment of the utility model, the water storage tank is used as a storage container for dust-settling water, and provides a continuous and stable water supply for the spray head assembly, ensuring that there is sufficient water to support the dust-settling operation process, and the anti-freezing liquid tank stores anti-freezing liquid for preventing the bucket of the shovel from freezing, providing the necessary material basis for preventing the freezing of materials such as coal and the bucket in a low-temperature winter environment, and the water storage tank and the anti-freezing liquid tank are connected with the counterweight tank and fixed in a suitable position, which can not only ensure the stability of the water storage tank and the anti-freezing liquid tank during the operation of the excavator, but also avoid collision with the working surface of the bucket, facilitating work; the valve is a control component of the fluid passage of the whole device, which can flexibly change the flow path of the fluid by operating the switch, and can meet different needs in different seasons and operating environments without additional complex equipment or operating procedures, improving the versatility and adaptability of the device; when the spray head assembly needs to be provided with water for dust-settling, the switch communicates the first inlet with the outlet, so that the water in the water storage tank can flow to the spray head assembly through the first inlet, the internal passage of the valve and the outlet in sequence, specifically, the water storage tank can be directly communicated with the first inlet of the valve, or can be communicated with the first inlet of the valve through a pipeline, and the outlet of the valve is communicated with the spray head assembly, in the case that the switch is switched to the first inlet and the outlet, the water in the water storage tank enters the spray head assembly under the action of pressure, the spray head assembly is connected with the boom and is arranged towards the working surface of the bucket, and can directly spray dust-settling water to the source of dust generation, improving the dust-settling efficiency and ensuring the maximization of the dust-settling effect, the spray head assembly can accurately spray water in the form of mist to the working area of the bucket, the atomized water droplets condense the dust raised in the air into larger particle groups, which are settled to the working surface by gravity, achieving the purpose of efficient dust-settling, improving the working environment, effectively reducing the damage of dust to the health of the operating personnel such as the operator of the excavator, and the spray head assembly can save water to the greatest extent and will not cause the problem of water accumulation on the working surface, and the influence of the water spraying amount on the total water index of raw coal production can be ignored; the dust concentration sensor and the spray head assembly are electrically connected with the control module to realize information interaction and control instruction transmission, the dust concentration sensor can detect the dust concentration in the air in the bucket operating environment in real time and accurately, and feed back the detection result to the control module to provide a decision basis for the control module, the control module is responsible for receiving the signal transmitted by the dust concentration sensor, and analyzes and processes according to the preset program and logic, when the dust concentration in the air reaches the set threshold, the controller judges and processes the digital signal output by the dust concentration sensor, and automatically adjusts the working parameters of the spray head assembly, such as the start-stop of the spray head assembly, the spray intensity and the spray time, realizing the intelligentization and automation of the dust-settling process, not only reducing the work burden of the operator, but also accurately controlling the dust-settling effect according to the actual dust condition, avoiding the waste of water resources;When the situation of using anti-freezing liquid to prevent the bucket from freezing in winter, the switch changes the state, so that the anti-freezing liquid in the anti-freezing liquid tank can flow to the nozzle assembly through the second inlet, the internal passage of the valve and the outlet in turn, and then be sprayed on the bucket of the shovel, thereby solving the problem of freezing of the bucket of the self-unloading truck in the winter in the extremely cold area, ensuring normal unloading, improving the operation efficiency of the equipment, and reducing the equipment failure and maintenance cost caused by the freezing problem. The water storage tank and the anti-freezing liquid tank share the valve and the nozzle assembly, so that the integration of the two functions of efficient dust reduction and anti-freezing is realized without increasing too many complex structures, different requirements in different seasons and operating environments are met, the versatility, adaptability and flexibility of the device are improved, the structure of the whole device is more compact, and space and cost are saved. The nozzle assembly is connected with the bucket rod and is arranged towards the working surface of the bucket, so that the nozzle assembly can move with the movement of the bucket rod, cover the dust area generated by the bucket in different working positions, and directly spray dust on the source of dust, ensuring that effective dust reduction operation can be performed during the whole mining and loading operation of the excavator, reducing the dust reduction dead angle, improving the uniformity and stability of the dust reduction effect, improving the dust reduction efficiency, and ensuring the maximization of the dust reduction effect. The dust concentration sensor and the nozzle assembly are electrically connected with the control module, so that the intelligentization and automation of the dust reduction process are realized, the work burden of the operator is reduced, the dust reduction effect can be accurately controlled according to the actual dust condition, and the waste of water resources is avoided. The water storage tank and the anti-freezing liquid tank are connected with the counterweight tank, the stability of the excavator itself is utilized, the stability of the water storage tank and the anti-freezing liquid tank during the working process of the excavator is ensured, and collision with the working surface of the bucket is avoided, so that the work is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0027] Figure 1 It is a structural schematic view of an embodiment of the excavator automatic induction efficient dust reduction and anti-freezing liquid spraying device of the present application.

[0028] Figure 2 It is a structural schematic view of an embodiment of the valve of the excavator automatic induction efficient dust reduction and anti-freezing liquid spraying device of the present application.

[0029] Figure 3The utility model discloses excavator automatic response high -efficient dust fall and antifreeze liquid spraying device one embodiment's work flow schematic drawing for the utility model;

[0030] Figure 4 The utility model discloses excavator automatic response high -efficient dust fall and antifreeze liquid spraying device's spray head subassembly one embodiment's structure schematic drawing for the utility model;

[0031] Figure 5 The utility model discloses excavator automatic response high -efficient dust fall and antifreeze liquid spraying device's spray head subassembly one embodiment's another visual angle structure schematic drawing for the utility model;

[0032] Figure 6 The utility model discloses excavator automatic response high -efficient dust fall and antifreeze liquid spraying device's one embodiment's partial structure schematic drawing for the utility model.

[0033] Explanation of drawing mark:

[0034] 100, excavator automatic response high -efficient dust fall and antifreeze liquid spraying device, 1, valve, 11, switch, 12, first import, 13, second import, 14, export, 2, high -efficient dust fall mechanism, 21, water storage tank, 22, spray head subassembly, 221, conveying part, 2211, pipeline connecting piece, 22111, water pipeline, 22111a, first pipeline, 22111b, second pipeline, 22111c, third pipeline, 22112, water delivery hose, 22112a, first hose, 22112b, second hose, 2212, booster, 222, spray head part, 2221, mounting bracket, 22211, first end, 22212, second end, 22213, third end, 22214, fourth end, 2222, first spray head, 2223, second spray head, 2224, third spray head, 2225, fourth spray head, 23, control module, 24, dust concentration sensor, 3, antifreeze liquid spraying mechanism, 31, antifreeze tank, 4, control switch, 5, first shock pad, 6, second shock pad, 7, first circuit assembly, 8, second circuit assembly,

[0035] 200, excavator, 210, machine body, 2101, main body, 2102, swing arm, 220, counterweight box, 230, bucket rod, 2301, first connecting end, 2302, second connecting end, 240, bucket, 250, cab.

[0036] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the embodiment, the attached drawing. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0038] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back), the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0039] In addition, if the embodiments of the present application involve descriptions such as "first", "second" and the like, the descriptions of "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0040] In the field of strip mining, the hydraulic backhoe excavator-truck-semi-fixed crushing station-belt conveyor process is an efficient and economical method of raw coal mining. However, due to factors such as coal quality, on the one hand, the excavator will raise a large amount of coal dust during the mining process, resulting in a poor working environment and increasing the risk of pneumoconiosis for on-site workers, in addition, the "Open-pit Coal Mine Air Pollution Prevention and Control Management Measures" clearly stipulates that the operating unit must strengthen the dust control work in the open-pit mine; on the other hand, the winter in the eastern region is extremely cold, and the coal is prone to freeze with the conveying belt and the car during the mining, loading and transportation process, affecting the normal operation of the equipment and the unloading efficiency. The existing mobile dust suppression equipment is usually arranged outside the working area, and the dust suppression effect is not good, which is difficult to effectively suppress the dust at the working site, and the traditional dust suppression equipment also lacks the function of anti-freezing liquid spraying, and cannot effectively prevent the coal from freezing on the car in extremely cold weather in winter.

[0041] Through careful research of the applicant, it is found that the hydraulic backhoe excavator produces a large amount of coal dust when mining coal, especially when mining and loading air-oxidized coal, which seriously affects the health of the excavator driver and the on-site staff. Some current improvement measures can start and stop the booster pump through remote control switches, but the water storage tank is embedded on the outer wall of the arm, which is easy to collide with the working surface and increases the power consumption of the excavator. Or although it can automatically control water mist spraying, the fogging effect is not good, it is difficult to achieve all-round dust reduction, and it cannot meet the needs of winter anti-freezing.

[0042] The main purpose of the utility model is to provide an excavator automatic induction efficient dust fall and anti-freezing liquid spraying device to solve the problem of how to realize efficient dust fall and anti-freezing.

[0043] Please refer to Figures 1 to 3 In an embodiment of the utility model, the excavator automatic induction efficient dust fall and anti-freezing liquid spraying device 100 is applied to the excavator 200, the excavator 200 includes the body 210, the counterweight box 220, the arm 230 and the bucket 240, the counterweight box 220 is connected with the body 210, the arm 230 is rotatably installed on the body 210, the bucket 240 is rotatably installed on the end of the arm 230 away from the body 210, the excavator automatic induction efficient dust fall and anti-freezing liquid spraying device 100 includes the valve 1, the efficient dust fall mechanism 2 and the anti-freezing liquid spraying mechanism 3, the valve 1 is provided with the switch 11, the first inlet 12, the second inlet 13 and the outlet 14, the switch 11 is used for switching the first inlet 12 and the outlet 14 communication or the second inlet 13 and the outlet 14 communication;The efficient dust fall mechanism 2 includes the water storage tank 21, the nozzle assembly 22, the control module 23 and the dust concentration sensor 24, the water storage tank 21 is connected with the counterweight box 220, the nozzle assembly 22 and the dust concentration sensor 24 are connected with the arm 230, the spray surface of the nozzle assembly 22 is set to the working surface of the bucket 240, the water storage tank 21 is communicated with the first inlet 12, the nozzle assembly 22 is communicated with the outlet 14, the nozzle assembly 22 and the dust concentration sensor 24 are electrically connected with the control module 23;The anti-freezing liquid spraying mechanism 3 includes the anti-freezing liquid tank 31, the anti-freezing liquid tank 31 is connected with the counterweight box 220, the anti-freezing liquid tank 31 is communicated with the second inlet 13.

[0044] In the embodiment of the utility model, water storage tank 21 is used as the storage container of dust-settling water, provides continuous and stable water source supply for the spray head assembly 22, ensures that there is enough water to support during the dust-settling operation, the anti-freezing liquid tank 31 stores the anti-freezing liquid used for preventing the bucket 240 from freezing, provides the necessary material basis for preventing the coal and other materials from freezing with the bucket in the low-temperature environment in winter, the water storage tank 21 and the anti-freezing liquid tank 31 are connected with the counterweight tank 220 and fixed at the appropriate position, which can not only ensure the stability of the water storage tank 21 and the anti-freezing liquid tank 31 during the operation of the excavator 200, but also avoid collision with the working surface of the bucket 240, facilitating work; the valve 1 is used as the control component of the fluid passage of the whole device, can flexibly change the flow path of the fluid through the operation of the switch 11, can meet different needs in different seasons and operating environments without additional complex equipment or operation process, improves the versatility and adaptability of the device; when it is necessary to provide water for the spray head assembly 22 for dust-settling, the switch 11 communicates the first inlet 12 with the outlet 14, so that the water in the water storage tank 21 can flow to the spray head assembly 22 through the first inlet 12, the internal passage of the valve 1 and the outlet 14 in turn, specifically, the water storage tank 21 can be directly communicated with the first inlet 12 of the valve 1, or can be communicated with the first inlet 12 of the valve 1 through a pipeline, the outlet 14 of the valve 1 is communicated with the spray head assembly 22, under the condition that the switch 11 is switched to the communication between the first inlet 12 and the outlet 14, the water in the water storage tank 21 enters the spray head assembly 22 under the action of pressure, the spray head assembly 22 is connected with the boom 230 and is arranged towards the working surface of the bucket 240, can directly spray the source of dust to improve the dust-settling efficiency and ensure the maximization of the dust-settling effect, the spray head assembly 22 can accurately spray water in the form of mist to the working area of the bucket 240, the atomized water droplets condense the dust raised in the air into larger particle groups, which are settled to the working surface by gravity, achieving the purpose of efficient dust-settling, improving the working environment, effectively reducing the damage of dust to the physical health of the operator such as the driver of the excavator 200, and the spray head assembly 22 can save water to the maximum extent and will not cause the problem of water accumulation on the working surface, and the influence of the water spraying amount on the total water index of the produced raw coal can be ignored.The dust concentration sensor 24 and the spray head assembly 22 are both electrically connected with the control module 23 to realize information interaction and control instruction transmission, the dust concentration sensor 24 can detect the dust concentration in the air in the working environment of the bucket 240 in real time and accurately, and feed back the detection result to the control module 23 to provide a basis for decision-making for the control module 23, the control module 23 is responsible for receiving the signal transmitted by the dust concentration sensor 24, and analyzes and processes according to the preset program and logic, when the dust concentration in the air reaches the set threshold value, the controller automatically adjusts the working parameters of the spray head assembly 22, such as the start-stop of the spray head assembly 22, the spraying intensity, the spraying time, etc., by judging and processing the digital signal transmitted by the dust concentration sensor 24, realizes the intelligentization and automation of the dust falling process, not only reduces the work burden of the operator, but also can accurately control the dust falling effect according to the actual dust condition, avoids the waste of water resources; when it is necessary to use antifreeze to prevent the bucket 240 from freezing in winter and the like, the switch 11 changes the state, so that the second inlet 13 is communicated with the outlet 14, so that the antifreeze in the antifreeze tank 31 can flow to the spray head assembly 22 through the second inlet 13, the internal passage of the valve 1 and the outlet 14 in turn and then is sprayed to the car hopper of the bucket 240, solves the problem of freezing of the car hopper of the self-unloading vehicle in the winter in the extremely cold area, guarantees the normal unloading, improves the operation efficiency of the equipment, and reduces the equipment failure and maintenance cost caused by the freezing problem.

[0045] The technical scheme of the utility model discloses a water storage tank 21 and anti-freezing liquid tank 31 share valve 1 and nozzle assembly 22, under the premise of not increasing too many complex structures, realize the integration of two functions of high -efficient dust fall and anti-freeze, can satisfy different needs under different seasons and operating environment, improve the versatility, adaptability and flexibility of device, also make the whole device structure more compact, save space and cost, through the adoption nozzle assembly 22 and arm 230 are connected and set to the working surface of bucket 240, make nozzle assembly 22 can move along with the movement of arm 230, cover the dust area generated in different working positions of bucket 240, also can directly spray dust fall to the source of dust generation, ensure that the whole mining machine 200 can carry out effective dust fall operation in the process of mining and loading operation, reduce the dust fall dead angle, improve the uniformity and stability of dust fall effect, improve the dust fall efficiency, ensure the maximization of dust fall effect, through the adoption dust concentration sensor 24 and nozzle assembly 22 are electrically connected with control module 23 to realize the intellectualization and automation of dust fall process, not only reduce the work burden of operator, but also can accurately control the dust fall effect according to actual dust condition, avoid the waste of water resources, through the adoption water storage tank 21 and anti-freezing liquid tank 31 are connected with counterweight tank 220, utilize the stability of the structure of mining machine 200, can ensure the stability of water storage tank 21 and anti-freezing liquid tank 31 in the working process of mining machine 200, also can avoid the collision with the working surface of bucket 240, facilitate work.

[0046] Please refer to Figure 3 In the embodiment, the dust concentration sensor 24 can adopt a laser scattering method sensor, which includes a laser, a light scattering measurement cavity, a filter amplifier and a microprocessor. The light scattering measurement cavity can accommodate dust-laden air. The laser emits a laser beam, which is scattered by the dust-laden air in the light scattering measurement cavity. Then, the filter amplifier and the microprocessor convert the electrical signal of the reflectivity of the dust-laden air to the laser beam into a digital signal, so as to detect the dust concentration in the air in real time. In other embodiments, the dust concentration sensor 24 can also adopt a photoelectric method sensor or an electrostatic method sensor. The specific selection of the dust concentration sensor 24 is not limited in the embodiment.

[0047] Please refer to Figure 1 , Figure 4 and Figure 5In an embodiment, the spray head assembly 22 comprises a conveying component 221 and a spray head component 222, the spray head component 222 comprises a mounting frame 2221 and a plurality of spray heads, the conveying component 221 is electrically connected with the control module 23, the conveying component 221 and the dipper arm 230 are both connected with the mounting frame 2221, the plurality of spray heads are arranged at intervals on the mounting frame 2221, and each spray head is in communication with the conveying component 221, the spray surface of each spray head faces the working surface of the bucket 240, and the end of the conveying component 221 away from the mounting frame 2221 is in communication with the outlet 14; specifically, the specific number of spray heads can be selected according to actual needs, which is not limited in the embodiment, the conveying component 221 plays a key role in fluid conveying in the entire spray head assembly 22, is responsible for conveying water or antifreeze from the outlet 14 of the valve 1 to each spray head, ensures that each spray head can continuously and stably spray fluid to achieve the function of dust reduction or antifreeze spraying, the conveying component 221 is electrically connected with the control module 23, so that the spray head assembly 22 can be flexibly adjusted according to the actual working condition and working environment of the excavator 200, for example, at different working heights and angles, the conveying component 221 can correspondingly adjust the pressure and flow of the fluid to ensure that the spraying effect of the spray head always remains in the best state; the mounting frame 2221 serves as a support structure for the plurality of spray heads, plays a role in fixing and positioning the spray heads, ensures that each spray head can be installed at a suitable position according to a predetermined position and angle, the mounting frame 2221 is connected with the dipper arm 230, so that the plurality of spray heads can move synchronously with the movement of the dipper arm 230 during the working process of the excavator 200 and maintain a relatively stable position, this structural design ensures that each spray head can accurately spray fluid towards the working surface of the bucket 240 under different working conditions, reduces the spraying deviation caused by equipment vibration or shaking, and improves the reliability of the device; the plurality of spray heads are arranged at intervals and have spray surfaces facing the working surface of the bucket 240, which can comprehensively cover the dust generated by the bucket 240 during the working process or the area that needs to be sprayed with antifreeze, effectively avoids dead angles of dust reduction or antifreeze spraying, improves working efficiency and effect, and ensures that enough fluid is sprayed to the corresponding area regardless of the working angle and position of the bucket 240; and the spray head assembly 22 adopts a modular design, the conveying component 221 and the spray head component 222 are relatively independent and cooperate with each other, this structure makes it convenient to check, repair or replace each component during equipment maintenance, for example, when a spray head fails, only the spray head needs to be replaced, which will not affect the normal work of other spray heads, thereby reducing maintenance cost and difficulty.

[0048] See Figure 4 and Figure 5In an embodiment, the mounting frame 2221 is provided with a first end 22211, a second end 22212, a third end 22213 and a fourth end 22214, the first end 22211 and the second end 22212 are respectively arranged on both sides of the mounting frame 2221 along the thickness direction of the dipper arm 230, the third end 22213 is arranged on the side of the mounting frame 2221 away from the dipper arm 230, and the fourth end 22214 is arranged on the side of the mounting frame 2221 away from the conveying component 221; the plurality of spray heads are respectively a first spray head 2222, a second spray head 2223, a third spray head 2224 and a fourth spray head 2225, the first spray head 2222 is arranged at the first end 22211, the second spray head 2223 is arranged at the second end 22212, the third spray head 2224 is arranged at the third end 22213, and the fourth spray head 2225 is arranged at the fourth end 22214; specifically, as shown in Figure 4 the thickness direction of the dipper arm is the front-rear direction, the first end 22211 and the second end 22212 are respectively arranged on both sides of the mounting frame 2221 along the front-rear direction, the mounting frame 2221 serves as a support carrier for the spray heads, providing stable mounting positions and reasonable layout space for each spray head, and the four spray heads are respectively located at different end points of the mounting frame 2221, forming a ring-shaped spray layout, which fully utilizes the space of the mounting frame 2221 and arranges four spray heads in a limited space, thereby improving the integration and space utilization of the spray head assembly 22 and enabling the working surface of the dipper 240 to be covered in all directions without dead angles, so that whether it is the front dust generated when the dipper 240 is loading materials or the side and edge dust, it can be captured and inhibited in time, greatly improving the dust suppression efficiency, and in winter, it can also ensure that the anti-freezing solution is uniformly sprayed on each part of the dipper 240, effectively preventing the material from freezing. This distribution mode makes the spray distribution on the working surface of the dipper 240 more uniform, and each spray head is responsible for a specific area, avoiding the situation that the spray is concentrated in a certain place, resulting in excessive or insufficient spray in some areas, thereby ensuring the consistency and stability of the dust suppression or anti-freezing solution spraying effect, achieving the best dust suppression or anti-freezing solution spraying effect; and since each spray head is distributed relatively independently and has a clear position, when a certain spray head needs to be maintained, cleaned or replaced, the operator can easily locate the corresponding spray head without being disturbed by other spray heads, thereby reducing the difficulty and time cost of maintenance and improving the maintainability of the equipment. In this embodiment, the structure of the mounting frame 2221 is a 1 / 4 spherical cavity structure, which can fully utilize the curved surface characteristics of the space, ensure appropriate spacing between the four spray heads, reduce the repeated spraying area between any two adjacent spray heads, expand the overall spraying range, achieve omnidirectional spraying, and also avoid interference between the spraying surface of the spray head and the mounting frame 2221, affecting the spraying range, thereby improving the efficient dust suppression and anti-freezing effect.

[0049] According to the embodiment of the utility model, the structure of the mounting frame 2221 is a frame structure, and the four spray heads are respectively located at different endpoints of the frame structure, so that omnidirectional spraying is realized, the dust area can be fully covered, and the dust concentration in the air is effectively reduced.

[0050] Please refer to Figure 5 In an embodiment, the number of spray head components 222 is at least two, and the at least two spray head components 222 are respectively arranged on the two sides of the arm 230 arranged opposite in the width direction. Figure 5 As shown in the figure, the width direction of the arm 230 is the left-right direction, and the at least two spray head components 222 are respectively arranged on the two sides of the arm 230 arranged opposite in the left-right direction. The specific number of spray head components 222 can be selected according to actual needs, and the embodiment does not limit this. In the embodiment, the number of spray head components 222 is two, and the two spray head components 222 are respectively arranged on the two sides of the arm 230 arranged opposite in the left-right direction, which can cover a wider working area of the bucket 240. When the excavator 200 performs the mining operation, no matter whether the dust generated on the left side or the right side of the bucket 240, the corresponding spray head component 222 can be used for spraying and dust suppression. The two spray head components 222 arranged opposite can spray the working surface of the bucket 240 from different angles, avoid the possible spraying blind area of a single spray head component 222, make the distribution of spraying on the working surface of the bucket 240 more uniform, ensure that the dust in each area can be effectively inhibited, or the antifreeze solution can be uniformly covered on the surface of the car hopper, and improve the working efficiency and quality.

[0051] Please refer to Figure 1 、 Figure 4 and Figure 5In an embodiment, the two ends of the arm 230 are respectively a first connecting end 2301 and a second connecting end 2302, the first connecting end 2301 is rotatably installed on the machine body 210, and the bucket 240 is rotatably installed on the second connecting end 2302; the distance between the dust concentration sensor 24 and the first connecting end 2301 is equal to the distance between the dust concentration sensor 24 and the second connecting end 2302; and / or the distance between the spray head component 222 and the first connecting end 2301 is equal to the distance between the spray head component 222 and the second connecting end 2302; specifically, the distance between the dust concentration sensor 24 and the first connecting end 2301 is equal to the distance between the dust concentration sensor 24 and the second connecting end 2302, so that the sensor can be in a central symmetric position of the working area of the bucket 240, thereby more comprehensively monitoring the dust condition generated in the entire working process of the bucket 240, avoiding the problem of undetectable or inaccurate detection of the dust concentration in some areas due to the position deviation of the dust concentration sensor 24, and providing more reliable dust concentration data for the control module 23, so as to more accurately control the working state of the spray head assembly 22, thereby realizing efficient dust control; the distance between the spray head component 222 and the first connecting end 2301 is equal to the distance between the spray head component 222 and the second connecting end 2302, which ensures the symmetrical position of the spray head assembly 22 on the arm 230, and when each spray head works, the fluid can be sprayed to both sides and each part of the bucket 240 in a relatively uniform manner, avoiding the situation of excessive or insufficient spraying in some areas due to the asymmetric position, realizing uniform coverage of the working surface of the bucket 240, and improving the effect of dust reduction or anti-freezing liquid spraying.

[0052] Please refer to Figure 1 , Figure 3 and Figure 6In an embodiment, the conveying component 221 comprises a pipeline connector 2211 and a booster 2212, the booster 2212 is electrically connected with the control module 23, the inlet of the booster 2212 communicates with the outlet 14, the two ends of the pipeline connector 2211 respectively communicate with the outlet of the booster 2212 and each spray head, and the mounting bracket 2221 is connected with the end of the pipeline connector 2211 away from the booster 2212; specifically, the main function of the booster 2212 is to provide sufficient pressure for the fluid, so that the spray head can spray the fluid in the form of mist, through boosting, the fluid obtains sufficient kinetic energy, so as to form fine mist droplets in the air, better realizing the effect of dust suppression or anti-freezing liquid spraying, the pipeline connector 2211 plays a role of connecting and transmitting fluid in the whole conveying component 221, the two ends of the pipeline connector 2211 respectively communicate with the booster 2212 and each spray head, forming a complete fluid transmission channel, which can uniformly distribute the high-pressure fluid output by the booster 2212 to each spray head, ensuring that each spray head can obtain stable fluid supply to realize effective spraying operation; in this embodiment, the booster 2212 can adopt a high-pressure plunger pump or a medium-pressure pump and other boosting equipment according to actual needs, which is not limited in this embodiment, and the booster 2212 is electrically connected with the control module 23, which makes the booster 2212 can adjust its working state according to the instruction of the control module 23, such as changing the speed of the pump, turning on or off the boosting function, so as to adjust the pressure and flow of the fluid, realize accurate control of the strength of the fluid, ensure that the spraying effect always remains in the best state, avoid the problems of equipment damage or poor spraying effect caused by too high or too low pressure, and also save the tedious operation of the excavator 200 driver, improve the automation and intelligence.

[0053] Please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6In an embodiment, the machine body 210 comprises a main body 2101 and a movable arm 2102, the counterweight box 220 is connected to the main body 2101, the movable arm 2102 is rotatably mounted to the main body 2101, the arm 230 is rotatably mounted to one end of the movable arm 2102 away from the main body 2101, the pipe connection 2211 comprises a water delivery pipe 22111 and a water delivery hose 22112, the water delivery pipe 22111 comprises a first pipe 22111a, a second pipe 22111b and a third pipe 22111c, the water delivery hose 22112 comprises a first hose 22112a and a second hose 22112b, the first pipe 22111a is connected to the main body 2101, the second pipe 22111b is connected to the movable arm 2102, the third pipe 22111c is connected to the arm 230, the first pipe 22111a is in communication with the booster 2212, two ends of the first hose 22112a are respectively in communication with one end of the first pipe 22111a away from the booster 2212 and the second pipe 22111b, two ends of the second hose 22112b are respectively in communication with one end of the second pipe 22111b away from the first hose 22112a and the third pipe 22111c, one end of the third pipe 22111c away from the second hose 22112b is connected to the mounting bracket 2221, and each spray head is in communication with the third pipe 22111c; specifically, the pipe system composed of the first pipe 22111a, the first hose 22112a, the second pipe 22111b, the second hose 22112b and the third pipe 22111c in turn, the main function of which is to provide a channel for the smooth transmission of the pressurized fluid (water or antifreeze) from the booster 2212 to each spray head, to ensure that the fluid can flow stably and efficiently in the entire device, thereby realizing the functions of dust suppression or antifreeze spraying, the first hose 22112a and the second hose 22112b play a key role in flexible connection in the entire pipe system, the first hose 22112a and the second hose 22112b themselves have good flexibility, wear resistance and elasticity, can bend and stretch within a certain range, allow the adjacent two pipes to move relatively within a certain range, to adapt to the rotation and displacement of the movable arm 2102 and the arm 230 of the excavator 200 during the working process, and will not be restricted due to the rigid connection of the pipes, while ensuring the sealed transmission of the fluid and preventing leakage.In the embodiment, the first pipe 22111a, the second pipe 22111b and the third pipe 22111c can all be made of stainless steel, and the first pipe 22111a, the second pipe 22111b and the third pipe 22111c can be fixed on the body 2101, the boom 2102 and the arm 230 respectively by welding, bolt connection or other reliable fixed connection mode, so as to ensure that the pipes will not be loose or fall off due to vibration or impact during the operation of the excavator 200; the first hose 22112a and the second hose 22112b can all be made of rubber, so as to have good wear resistance, thereby enhancing the reliability of the entire pipe connector 2211.

[0054] In the embodiment, the body 2101 and the boom 2102, the boom 2102 and the arm 230, and the arm 230 and the bucket 240 can all be connected by a hinged connection, a ball joint connection or a hydraulic cylinder assisted connection, which is not limited in the embodiment.

[0055] Please refer to Figures 1 to 3 , in an embodiment, the excavator 200 further comprises a cab 250, the cab 250 is connected with the body 2101, and the excavator automatic induction high-efficiency dust falling and anti-freezing liquid spraying device 100 further comprises a control switch 4, the control switch 4 is arranged in the cab 250; the control switch 4 is electrically connected with the valve 1; and / or, the control switch 4 is electrically connected with the control module 23; specifically, in the embodiment, the valve 1 and the control module 23 are both electrically connected with the control switch 4, the centralized control of the entire automatic induction high-efficiency dust falling and anti-freezing liquid spraying device can be realized through the control switch 4, which is convenient for the driver to manually start and stop the fog-making dust falling device in non-working scenes, automatic control failures or other necessary times, and in winter severe cold environment, the working mode of the valve 1 is changed through the control switch 4, the switching switch 11 is switched to the second inlet 13 and the outlet 14 in communication, the dust falling mode is switched to the anti-freezing mode, the anti-freezing liquid spraying operation is carried out on the dump truck hopper, and the freezing of the hopper and the raw coal is prevented, and the control switch 4 is arranged in the cab 250, so that the driver can operate and control the entire excavator automatic induction high-efficiency dust falling and anti-freezing liquid spraying device 100 without leaving the cab 250, which greatly improves the convenience of operation, especially in harsh working environment, the operator does not need to go outside the equipment to carry out tedious operation, which reduces the labor intensity and safety risk, specifically, the control switch 4 can be arranged on the operation platform of the cab 250, so as to facilitate the driver to operate.

[0056] In the embodiment, the control switch 4 and the control module 23 can be electrically connected with the battery of the excavator 200, thereby providing power supply for the entire excavator automatic induction high-efficiency dust falling and anti-freezing liquid spraying device 100.

[0057] Please refer toFigure 1 In the embodiment, the control module 23 is electrically connected with the nozzle assembly 22 and the dust concentration sensor 24 through the first circuit assembly 7, and the control switch 4 is electrically connected with the valve 1 and the first circuit assembly 7 through the second circuit assembly 8, for the convenience of connection.

[0058] Please refer to Figure 1 , Figure 2 and Figure 6 In an embodiment, the first inlet 12 is arranged at the bottom of the valve 1, the outlet 14 is arranged at the top of the valve 1, the second inlet 13 is arranged at the side of the valve 1, and the anti-freezing liquid tank 31 is arranged at the top of the water storage tank 21. Specifically, in the embodiment, since the first inlet 12 and the second inlet 13 are arranged at the bottom and the side of the valve 1 respectively, by reasonably arranging the positions of the water storage tank 21 and the anti-freezing liquid tank 31, the anti-freezing liquid tank 31 is arranged at the top of the water storage tank 21, without additional complex pipeline layout or power device to realize the transportation and switching of water and anti-freezing liquid, the number and types of components are reduced, thereby reducing the production cost and installation difficulty, and also making the structure of the whole excavator automatic induction efficient dust reduction and anti-freezing liquid spraying device 100 more compact, the device occupies less space on the excavator 200, which can optimize the overall layout and improve the space utilization of the equipment. In the embodiment, the valve 1 can adopt a three-way electromagnetic valve, and the switching switch 11 is an iron core coil. When the iron core coil is powered on, the second inlet 13 is communicated with the outlet 14, so as to realize anti-freezing liquid spraying. When the power is off, the first inlet 12 is communicated with the outlet 14, to realize dust reduction spraying. In other embodiments, the valve 1 also adopts a pneumatic two-position three-way reversing valve or a hydraulic two-position three-way reversing valve, and the specific selection of the valve 1 is not limited in the embodiment. In the embodiment, the anti-freezing liquid tank 31 and the water storage tank 21 can both adopt stainless steel materials, and the anti-freezing liquid tank 31 and the water storage tank 21 can be fixed on the counterweight tank 220 by welding, bolt connection or other reliable fixed connection mode, so as to ensure the structural stability of the anti-freezing liquid tank 31 and the water storage tank 21 during the working process of the excavator 200.

[0059] Please refer to Figure 6In an embodiment, the excavator automatic response high-efficiency dust and anti-freezing liquid spraying device 100 further comprises a first damping pad 5 located between the anti-freezing liquid tank 31 and the water storage tank 21, and the two sides of the first damping pad 5 are respectively in abutment with the anti-freezing liquid tank 31 and the water storage tank 21; and / or the excavator automatic response high-efficiency dust and anti-freezing liquid spraying device 100 further comprises a second damping pad 6 located between the counterweight tank 220 and the water storage tank 21, and the two sides of the second damping pad 6 are respectively in abutment with the counterweight tank 220 and the water storage tank 21; specifically, since the movement and interaction of each component during the operation of the excavator 200 will generate vibration, the first damping pad 5 is arranged between the anti-freezing liquid tank 31 and the water storage tank 21, and the second damping pad 6 is arranged between the counterweight tank 220 and the water storage tank 21, and through the arrangement of the first damping pad 5 and the second damping pad 6, the vibration transmission between the anti-freezing liquid tank 31 and the water storage tank 21 and between the counterweight tank 220 and the water storage tank 21 is effectively isolated, so that each component can maintain a relatively independent and stable state during the operation process, and the problems of equipment shaking, displacement and the like caused by vibration mutual influence are reduced, and the stability and service life of the entire device are improved.

[0060] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application is included in the patent protection scope of the present application.

Claims

1. An excavator automatic induction efficient dust fall and anti-freezing liquid spraying device, applied to an excavator, the excavator comprising a machine body, a counterweight box, a boom and a bucket, the counterweight box being connected with the machine body, the boom being rotatably installed on the machine body, and the bucket being rotatably installed on an end of the boom away from the machine body, characterized in that, The excavator automatic induction high-efficiency dust fall and anti-freezing liquid spraying device comprises: a valve is provided with a switching switch, a first inlet, a second inlet and an outlet, the switching switch is used for switching the first inlet and the outlet to communicate or the second inlet and the outlet to communicate; a high-efficiency dust fall mechanism, the high-efficiency dust fall mechanism comprises a water storage tank, a spray head assembly, a control module and a dust concentration sensor, the water storage tank is connected with the counterweight tank, the spray head assembly and the dust concentration sensor are both connected with the arm, the spray surface of the spray head assembly is arranged towards the working surface of the bucket, the water storage tank is communicated with the first inlet, the spray head assembly is communicated with the outlet, and the spray head assembly and the dust concentration sensor are both electrically connected with the control module; an anti-freezing liquid spraying mechanism, the anti-freezing liquid spraying mechanism comprises an anti-freezing liquid tank, the anti-freezing liquid tank is connected with the counterweight tank, and the anti-freezing liquid tank is communicated with the second inlet.

2. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavators according to claim 1, characterized in that, The spray head assembly comprises a conveying part and a spray head part, the spray head part comprises a mounting frame and a plurality of spray heads, the conveying part is electrically connected with the control module, the conveying part and the arm are both connected with the mounting frame, a plurality of the spray heads are arranged at intervals on the mounting frame, and each spray head is communicated with the conveying part, and the spray surface of each spray head is arranged towards the working surface of the bucket, and one end of the conveying part away from the mounting frame is communicated with the outlet.

3. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 2, characterized in that, The mounting frame is provided with a first end, a second end, a third end and a fourth end, the first end and the second end are respectively arranged on both sides of the mounting frame along the thickness direction of the arm, the third end is arranged on one side of the mounting frame away from the arm, and the fourth end is arranged on one side of the mounting frame away from the conveying part; the plurality of spray heads are respectively a first spray head, a second spray head, a third spray head and a fourth spray head, the first spray head is arranged on the first end, the second spray head is arranged on the second end, the third spray head is arranged on the third end, and the fourth spray head is arranged on the fourth end.

4. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavators according to claim 3, characterized in that, The number of the spray head parts is at least two, and at least two spray head parts are arranged on both sides of the arm along the width direction.

5. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 2, characterized in that, Both ends of the arm are a first connecting end and a second connecting end, the first connecting end is rotatably mounted on the machine body, and the bucket is rotatably mounted on the second connecting end; The distance between the dust concentration sensor and the first connecting end is equal to the distance between the dust concentration sensor and the second connecting end; And / or, The distance between the spray head part and the first connecting end is equal to the distance between the spray head part and the second connecting end.

6. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 2, characterized in that, The conveying part comprises a pipeline connecting piece and a booster, the booster is electrically connected with the control module, the inlet of the booster is communicated with the outlet, both ends of the pipeline connecting piece are respectively communicated with the outlet of the booster and each spray head, and the mounting frame is connected with one end of the pipeline connecting piece away from the booster.

7. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 6, characterized in that, The machine body comprises a main body and a movable arm, the counterweight box is connected to the main body, the movable arm is rotatably mounted to the main body, the arm is rotatably mounted to the end of the movable arm away from the main body, the pipeline connector comprises a water supply pipeline and a water supply hose, the water supply pipeline comprises a first pipeline, a second pipeline and a third pipeline, the water supply hose comprises a first hose and a second hose, the first pipeline is connected to the main body, the second pipeline is connected to the movable arm, the third pipeline is connected to the arm, the first pipeline is in communication with the booster, the two ends of the first hose are respectively in communication with the end of the first pipeline away from the booster and the second pipeline, the two ends of the second hose are respectively in communication with the end of the second pipeline away from the first hose and the third pipeline, the end of the third pipeline away from the second hose is connected to the mounting bracket, and each of the spray heads is in communication with the third pipeline.

8. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 7, characterized in that, The excavator further comprises a cab connected to the main body, and the automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a control switch arranged in the cab. The control switch is electrically connected to the valve. And / or, The control switch is electrically connected to the control module.

9. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to any one of claims 1 to 8, characterized in that, The first inlet is arranged at the bottom of the valve, the outlet is arranged at the top of the valve, and the second inlet is arranged at the side of the valve.

10. The automatic induction high-efficiency dust and anti-freezing liquid spraying device for excavator according to claim 9, characterized in that, The automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a first damping pad between the anti-freezing liquid tank and the water storage tank, and the two sides of the first damping pad are respectively in abutment with the anti-freezing liquid tank and the water storage tank. And / or, The automatic induction high-efficiency dust reduction and anti-freezing liquid spraying device further comprises a second damping pad between the counterweight box and the water storage tank, and the two sides of the second damping pad are respectively in abutment with the counterweight box and the water storage tank.

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