An excavator with protective device for mine excavation

Abstract

The present invention relates to the technical field of excavators, and in particular to an excavator used for mine excavation and having a protective device. The excavator used for mine excavation and having a protective device comprises a moving component, a control component and an excavation mechanism, wherein the excavation mechanism comprises a swing arm, a bucket and a bucket hydraulic component, and the bucket hydraulic component comprises a bucket hydraulic component, a protective airbag component, two cleaning and cooling components and an extrusion component. The control component is used to control the movement of the moving component and can also control the excavation mechanism to excavate. The swing arm of the excavation mechanism is used to control the up and down movement of the bucket. The bucket hydraulic component of the bucket hydraulic component is used to control the bucket to excavate. The protective airbag component can release the internal gas after being pressurized. The cleaning and cooling component can guide the gas to the bucket hydraulic component to remove dust and cool the bucket hydraulic component, thereby extending the service life of the bucket hydraulic component. The extrusion component can extrude the protective airbag component.

Description

Technical Field

[0001] The present invention relates to the technical field of excavators, and in particular to an excavator used for mine excavation and provided with a protective device. Background Art

[0002] An excavator is a heavy-duty construction machine widely used in many fields such as mining, infrastructure construction, and emergency rescue. The working device of an excavator includes a boom, a dipper arm, and a bucket, among which: the boom is the main component connecting the body and the dipper arm, which is generally thick and strong and can withstand huge digging forces. The dipper arm can adjust the digging range and depth of the bucket. Its length and strength design are determined according to the actual needs of digging. The bucket is usually made of high-strength wear-resistant materials. It has two shapes: a front shovel and a back shovel. A front shovel bucket is suitable for digging materials above the excavator's standing plane, while a back shovel bucket is better at digging materials below the excavator's standing plane.

[0003] Due to the frequent occurrence of unexpected situations such as rock rolling during operations on high steps and high slopes in open-pit mines, the excavator bucket arm cannot dodge in time, resulting in the oil cylinder of the excavator being hit or impacted by rocks, causing dents and deformation, and the operation has to be stopped for maintenance, which seriously affects the safe production of the mine. At the same time, the oil cylinder of long-term field operations is prone to dust and agglomeration, causing excessive wear, and continuous operation is also prone to high temperature, which can damage the oil cylinder. Summary of the invention

[0004] Based on this, it is necessary to provide an excavator for mine excavation and having a protective device to solve at least one of the above technical problems.

[0005] An excavator for mine excavation and having a protective device comprises a moving assembly, a control assembly and an excavating mechanism, wherein the moving assembly is placed on the ground, the control assembly is mounted on the top of the moving assembly, the excavating mechanism is mounted on one end of the control assembly, the excavating mechanism comprises a swing arm, a bucket and a bucket hydraulic assembly, one end of the swing arm is hingedly connected to one end of the control assembly, the bucket is hingedly connected to the other end of the swing arm, the bucket hydraulic assembly is mounted on the other end side wall of the swing arm, the bucket hydraulic assembly comprises a bucket hydraulic component, a protective airbag component, two cleaning and cooling components and an extrusion component, the bucket hydraulic component is mounted on the other end side wall of the swing arm, the protective airbag component is fixedly sleeved on the outside of one end of the bucket hydraulic component, the two cleaning and cooling components are respectively mounted on the two side walls of the protective airbag component, one end of the extrusion component is connected to the bucket hydraulic assembly, and the other end is connected to the protective airbag component.

[0006] The control component is used to control the movement of the moving component and can also control the excavating mechanism to excavate. The swing arm of the excavating mechanism is used to control the up and down movement of the bucket. The bucket hydraulic parts of the bucket hydraulic assembly are used to control the bucket to excavate. The protective airbag parts can release the internal gas after being pressurized. The cleaning and cooling parts can guide the gas and guide the gas into the bucket hydraulic parts to remove dust and cool the bucket hydraulic parts, thereby extending the service life of the bucket hydraulic parts. The extrusion parts can extrude the protective airbag parts.

[0007] In one embodiment, the moving assembly includes two track members and a support base. The two track members are placed on the ground, and two ends of the support base are respectively abutted against the inside of the two track members.

[0008] In one embodiment, the control assembly includes a counterweight rotating platform and a driver's seat, wherein the bottom of the counterweight rotating platform is rotatably clamped on the top of the support base, and the driver's seat is installed at one end of the top of the counterweight rotating platform.

[0009] In one embodiment, the swing arm member includes a boom, an arm, two boom hydraulic cylinders and an arm hydraulic cylinder, a hinge groove is opened at the top of one end of the counterweight rotating platform adjacent to the boom, and two fixed blocks are installed on the bottom side wall of the hinge groove, the two side walls of one end of the boom are hinged to the two fixed blocks, one end of the arm is hinged to the other end of the boom, and the bucket is hinged to the other end of the arm, and an articulation block is installed on the end of the counterweight rotating platform adjacent to the bucket, the two boom hydraulic cylinders are respectively located on the two side walls of the boom, and one end of the two boom hydraulic cylinders are respectively hingedly connected to the two articulation blocks, the other ends of the two boom hydraulic cylinders are hingedly connected to the middle part of the boom, one end of the arm hydraulic cylinder is hingedly connected to the middle part of the boom, and the other end of the arm hydraulic cylinder is hingedly connected to one end of the arm.

[0010] In one embodiment, the bucket hydraulic parts include a bucket cylinder housing, an extrusion rod and a plurality of anti-collision ribs, one end of the bucket cylinder housing is hingedly connected to one end of the dipper arm and the bucket, one end of the extrusion rod is slidably inserted into the interior of the bucket cylinder housing, and the other end of the extrusion rod is hingedly connected to the dipper arm, and the plurality of anti-collision ribs are installed on a side wall of the bucket cylinder housing away from the dipper arm.

[0011] In one embodiment, the extrusion member includes an L-shaped push rod and an extrusion plate, one end of the push rod is fixedly connected to an end of the extrusion rod away from the bucket cylinder housing, and a side wall of the extrusion plate is fixedly connected to the other end of the push rod.

[0012] In one embodiment, the protective airbag component includes a protective cover, a partition plate and a self-restoring airbag. The protective cover is arranged on the outside of the bucket cylinder housing, the partition plate and the self-restoring airbag are both installed on the inside of the protective cover, the bucket cylinder housing and the self-restoring airbag are respectively located on both sides of the partition plate, and the self-restoring airbag is located on the side of the bucket cylinder housing away from the bucket cylinder housing.

[0013] In one embodiment, one end of the self-restoring airbag away from the partition plate is fixedly connected to the inner wall of the protective cover, an air inlet is provided at the end of the self-restoring airbag adjacent to the partition plate, and the end of the self-restoring airbag adjacent to the partition plate is in a tensioned state, and a spring is installed at the end of the self-restoring airbag away from the partition plate.

[0014] In one embodiment, two cleaning and cooling components are fixedly installed on the two side walls of the protective cover respectively, and each cleaning and cooling component includes a protective support shell and an exhaust pipe made of metal material. The protective support shell is installed on the side wall of the protective cover, one end of the exhaust pipe is inserted into the side wall of the self-recovering airbag away from the partition plate, and the middle part of the exhaust pipe is received inside the protective support shell.

[0015] In one embodiment, a scraping rubber ring is sleeved on one end of the push rod adjacent to the extrusion plate, and both sides of the scraping rubber ring are respectively communicated with the other ends of the two exhaust pipes, and two cooling components are installed on one side of the scraping rubber ring adjacent to the extrusion plate, and the two cooling components are respectively located on both sides of the push rod, and each cooling component includes a support rod and a cooling tube, one end of the support rod is fixedly connected to the side wall of the protective support shell, one end of the cooling tube is connected to the scraping rubber ring, and the other end of the cooling tube faces the push rod, and the other end of the support rod is fixedly connected to the middle part of the cooling tube, and two bendable and deformable plastic cleaning tubes are installed on the side of the scraping rubber ring away from the extrusion plate, the two plastic cleaning tubes are respectively located on both sides of the push rod, one end of each plastic cleaning tube is connected to the scraping rubber ring, and the other end of each plastic cleaning tube faces the middle part of the push rod, and the inner tube diameter length of the exhaust pipe is greater than the sum of the inner tube diameter length of the two cooling tubes and the inner tube diameter length of the two plastic cleaning tubes.

[0016] The present invention provides a scraper rubber ring. When the extrusion rod moves toward the inner side of the bucket cylinder housing, the push rod follows the extrusion rod to move toward the self-restoring airbag. The push rod pushes the extrusion plate to squeeze the self-restoring airbag, and the self-restoring airbag contracts. The gas in the self-restoring airbag is discharged through the exhaust pipe, the scraper rubber ring and the cooling pipe, or the gas in the self-restoring airbag is discharged through the exhaust pipe, the scraper rubber ring and the plastic cleaning pipe. The gas is discharged into the scraper rubber ring through the exhaust pipe. The speed of gas discharge from the self-restoring airbag is lower than the discharge speed of the two cooling pipes and the two plastic cleaning pipes. The scraper rubber ring expands to better abut the extrusion rod, so that the scraper rubber ring scrapes off dust and lumps attached to the surface of the extrusion rod, preventing dust from entering the interior of the bucket cylinder housing and then contaminating the oil inside the bucket cylinder housing, while preventing lumps attached to the surface of the extrusion rod from hitting the outside of the bucket cylinder housing and then wearing and damaging the bucket cylinder housing.

[0017] By setting a cooling pipe, the gas in the self-recovering airbag is discharged through the exhaust pipe, the scraper rubber ring and the cooling pipe to form a cooling airflow F1. After being discharged from the cooling pipe, the cooling airflow F1 is used to cool the extrusion rod to prevent the extrusion rod from being overheated for a long time, thereby reducing the service life of the extrusion rod.

[0018] By setting a plastic cleaning tube, the gas in the self-recovering airbag is discharged through the exhaust pipe, the scraping rubber ring and the plastic cleaning tube to form a clean airflow F2. After being discharged from the plastic cleaning tube, the clean airflow F2 is used to clean the dust attached to the surface of the extrusion rod to prevent the dust from entering the interior of the bucket cylinder housing and then polluting the oil inside the bucket cylinder housing. The scraping rubber ring expands to scrape the dust attached to the surface of the extrusion rod to prevent the dust that cannot be blown away by the clean airflow F2 from entering the interior of the bucket cylinder housing and then polluting the oil inside the bucket cylinder housing. The plastic cleaning tube and the cooling tube can adjust the direction to better cool the extrusion rod or blow away the dust attached to the surface of the extrusion rod.

[0019] By setting the air inlet, when the extrusion plate squeezes the self-restoring airbag, the air inlet is blocked, so that the gas inside the self-restoring airbag cannot be discharged from the air inlet, and then the gas inside the self-restoring airbag is discharged from the exhaust pipe. When the extrusion plate squeezes toward the self-restoring airbag, the spring is compressed, and the spring can accelerate the recovery speed of the extrusion rod, thereby accelerating the extension and retraction speed of the bucket hydraulic parts and the excavation speed of the bucket. The protective airbag parts, the protective support shell and the multiple anti-collision ribs can prevent the ore from directly damaging the oil cylinder, thereby preventing the ore from damaging the oil cylinder. The push rod can prevent the ore from damaging the extrusion rod and prevent the extrusion rod from being unable to extend and retract into the bucket oil cylinder housing. After the extrusion rod is pulled out of the bucket cylinder housing, the push rod releases the extrusion on the self-restoring airbag, and the end of the self-restoring airbag adjacent to the extrusion plate is stretched and tightened, thereby opening the air inlet, so that the gas in the self-restoring airbag can be quickly replenished, preventing the self-restoring airbag from lacking gas when the excavation mechanism is actuated next time, thereby failing to form the cooling airflow F1 and the cleaning airflow F2, thereby making it impossible for the cooling airflow F1 to cool the extrusion rod, thereby reducing the service life of the extrusion rod; thereby making it impossible for the cleaning airflow F2 to blow away the dust attached to the surface of the extrusion rod, thereby causing the dust to enter the bucket cylinder housing and contaminate the oil.

[0020] The present invention has a simple structure and can effectively prevent the ore from damaging the oil cylinder. When the bucket is actuated, the extrusion rod can squeeze the self-restoring airbag, and the self-restoring airbag releases the internal gas after being squeezed. The gas can not only blow away the dust attached to the surface of the extrusion rod, and prevent the dust from entering the interior of the bucket cylinder housing and further contaminating the oil inside the bucket cylinder housing; it can also cool the extrusion rod, and prevent the extrusion rod from being used at too high a temperature for a long time, thereby reducing the service life of the extrusion rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of an overall embodiment.

[0022] Figure 2 It is a three-dimensional schematic diagram of another viewing angle of an overall embodiment.

[0023] Figure 3 It is a three-dimensional schematic diagram of an excavation mechanism according to an embodiment.

[0024] Figure 4 It is a three-dimensional schematic diagram of a part of the excavation mechanism of an embodiment.

[0025] Figure 5 It is a three-dimensional schematic diagram of a bucket hydraulic component after a portion of the protective support shell is removed according to an embodiment.

[0026] Figure 6 A cross-sectional view of a portion of an excavation mechanism according to an embodiment.

[0027] Figure 7 The figure is a three-dimensional schematic diagram of a self-restoring airbag according to an embodiment.

[0028] In the figure: 10, mobile assembly; 11, crawler; 12, support base; 20, control assembly; 21, counterweight rotating table; 22, driver's seat; 210, hinge slot; 211, fixed block; 212, hinge block; 30, excavation mechanism; 31, swing arm; 32, bucket; 33, bucket hydraulic assembly; 310, boom; 311, bucket rod; 312, boom hydraulic cylinder; 313, bucket rod hydraulic cylinder; 40, bucket Bucket hydraulic parts; 41. Bucket cylinder housing; 42. Extrusion rod; 43. Anti-collision ribs; 50. Protective airbag parts; 51. Protective cover; 52. Partition plate; 53. Self-restoring airbag; 54. Air inlet; 55. Spring; 60. Cleaning and cooling parts; 61. Protective support shell; 62. Exhaust pipe; 70. Extrusion parts; 71. Push rod; 72. Extrusion plate; 80. Scrape rubber ring; 81. Cooling parts; 82. Plastic cleaning pipe; 810. Support rod; 811. Cooling pipe. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] An embodiment provided by the present invention is as follows: Figures 1 to 7As shown, an excavator for mining and having a protective device comprises a moving assembly 10, a control assembly 20 and an excavating mechanism 30. The moving assembly 10 is placed on the ground, the control assembly 20 is mounted on the top of the moving assembly 10, and the excavating mechanism 30 is mounted on one end of the control assembly 20. The excavating mechanism 30 comprises a swing arm 31, a bucket 32 ​​and a bucket hydraulic assembly 33. One end of the swing arm 31 is hingedly connected to one end of the control assembly 20, and the bucket 32 ​​is hingedly connected to the other end of the swing arm 31. The bucket hydraulic assembly 33 is installed on the other end side wall of the swing arm member 31. The bucket hydraulic assembly 33 includes a bucket hydraulic component 40, a protective airbag component 50, two cleaning and cooling components 60 and an extrusion component 70. The bucket hydraulic component 40 is installed on the other end side wall of the swing arm member 31. The protective airbag component 50 is fixedly sleeved on the outside of one end of the bucket hydraulic component 40. The two cleaning and cooling components 60 are respectively installed on the two side walls of the protective airbag component 50. One end of the extrusion component 70 is connected to the bucket hydraulic assembly 33, and the other end is connected to the protective airbag component 50.

[0033] The control component 20 is used to control the movement of the moving component 10, and can also control the excavation mechanism 30 to excavate. The swing arm component 31 of the excavation mechanism 30 is used to control the up and down movement of the bucket 32. The bucket hydraulic component 40 of the bucket hydraulic component 33 is used to control the bucket 32 ​​to excavate. The protective airbag component 50 can release the internal gas after being pressurized. The cleaning and cooling component 60 can guide the gas and guide the gas into the bucket hydraulic component 40 to remove dust and cool the bucket hydraulic component 40, thereby extending the service life of the bucket hydraulic component 40. The extrusion component 70 can extrude the protective airbag component 50.

[0034] like Figure 1 and Figure 2 As shown, the moving assembly 10 includes two track members 11 and a support base 12 . The two track members 11 are placed on the ground, and two ends of the support base 12 are respectively in contact with the inside of the two track members 11 .

[0035] like Figure 1 and Figure 2 As shown, the control assembly 20 includes a counterweight rotating platform 21 and a driver's seat 22 . The bottom of the counterweight rotating platform 21 is rotatably clamped on the top of the support base 12 , and the driver's seat 22 is installed on one end of the top of the counterweight rotating platform 21 .

[0036] like Figures 3 to 6As shown, the swing arm member 31 includes a boom 310, an arm 311, two boom hydraulic cylinders 312 and an arm hydraulic cylinder 313. A hinge groove 210 is provided on the top of one end of the counterweight rotating platform 21 adjacent to the boom 310. Two fixing blocks 211 are installed on the bottom side wall of the hinge groove 210. The two side walls of one end of the boom 310 are hinged to the two fixing blocks 211. One end of the arm 311 is hinged to the other end of the boom 310. The bucket 32 ​​is hinged to the other end of the arm 311. An articulated block 212 is installed at one end of the heavy rotating platform 21 adjacent to the bucket 32, and two boom hydraulic cylinders 312 are respectively located on the two side walls of the boom 310, and one end of the two boom hydraulic cylinders 312 are respectively hingedly connected to the two articulated blocks 212, and the other ends of the two boom hydraulic cylinders 312 are hingedly connected to the middle part of the boom 310, one end of the arm hydraulic cylinder 313 is hingedly connected to the middle part of the boom 310, and the other end of the arm hydraulic cylinder 313 is hingedly connected to one end of the arm 311.

[0037] like Figures 3 to 6 As shown, the bucket hydraulic component 40 includes a bucket cylinder housing 41, an extrusion rod 42 and a plurality of anti-collision ribs 43. One end of the bucket cylinder housing 41 is hingedly connected to one end of the bucket arm 311 and the bucket 32. One end of the extrusion rod 42 is slidably inserted into the interior of the bucket cylinder housing 41, and the other end of the extrusion rod 42 is hingedly connected to the bucket arm 311. The plurality of anti-collision ribs 43 are all installed on the side wall of the bucket cylinder housing 41 away from the bucket arm 311.

[0038] like Figures 3 to 6 As shown, the extrusion member 70 includes an L-shaped push rod 71 and an extrusion plate 72 , one end of the push rod 71 is fixedly connected to one end of the extrusion rod 42 away from the bucket cylinder housing 41 , and a side wall of the extrusion plate 72 is fixedly connected to the other end of the push rod 71 .

[0039] like Figure 5 and Figure 6 As shown, the protective airbag component 50 includes a protective cover 51, a partition plate 52 and a self-recovering airbag 53. The protective cover 51 is arranged on the outside of the bucket cylinder housing 41, and the partition plate 52 and the self-recovering airbag 53 are both installed inside the protective cover 51. The bucket cylinder housing 41 and the self-recovering airbag 53 are respectively located on both sides of the partition plate 52, and the self-recovering airbag 53 is located on the side of the bucket cylinder housing 41 away from the bucket cylinder housing 41.

[0040] like Figures 3 to 7 As shown, one end of the self-restoring airbag 53 away from the partition plate 52 is fixedly connected to the inner wall of the protective cover 51, an air inlet 54 is provided at one end of the self-restoring airbag 53 adjacent to the partition plate 52, and the end of the self-restoring airbag 53 adjacent to the partition plate 52 is in a tensioned state, and a spring 55 is installed at one end of the self-restoring airbag 53 away from the partition plate 52.

[0041] like Figures 3 to 6 As shown, two cleaning and cooling components 60 are respectively fixedly installed on the two side walls of the protective cover 51, and each cleaning and cooling component 60 includes a protective support shell 61 and an exhaust pipe 62 made of metal material. The protective support shell 61 is installed on the side wall of the protective cover 51, and one end of the exhaust pipe 62 is inserted into the side wall of the self-recovering airbag 53 away from the partition plate 52, and the middle part of the exhaust pipe 62 is received in the interior of the protective support shell 61.

[0042] like Figures 3 to 6 As shown, a scraping rubber ring 80 is sleeved on one end of the push rod 71 adjacent to the extrusion plate 72, and the two sides of the scraping rubber ring 80 are respectively communicated with the other ends of the two exhaust pipes 62. Two cooling components 81 are installed on one side of the scraping rubber ring 80 adjacent to the extrusion plate 72. The two cooling components 81 are respectively located on both sides of the push rod 71. Each cooling component 81 includes a support rod 810 and a cooling tube 811. One end of the support rod 810 is fixedly connected to the side wall of the protective support shell 61, one end of the cooling tube 811 is connected to the scraping rubber ring 80, and the other end of the cooling tube 811 faces the side wall of the protective support shell 61. Toward the push rod 71, the other end of the support rod 810 is fixedly connected to the middle of the cooling tube 811, and two bendable and deformable plastic cleaning tubes 82 are installed on the side of the scraper rubber ring 80 away from the extrusion plate 72. The two plastic cleaning tubes 82 are respectively located on both sides of the push rod 71, one end of each plastic cleaning tube 82 is connected to the scraper rubber ring 80, and the other end of each plastic cleaning tube 82 faces the middle of the push rod 71, and the inner tube diameter length of the exhaust pipe 62 is greater than the sum of the inner tube diameter lengths of the two cooling tubes 811 and the inner tube diameter lengths of the two plastic cleaning tubes 82.

[0043] During installation: the control assembly 20 is installed on the top of the moving assembly 10, the excavation mechanism 30 is installed on one end of the control assembly 20, the bucket hydraulic assembly 33 is installed on the other side wall of the swing arm 31, the bucket hydraulic component 40 is installed on the other side wall of the swing arm 31, and the two cleaning and cooling components 60 are respectively installed on the two side walls of the protective airbag component 50. The driver's seat 22 is installed on one end of the top of the counterweight rotating platform 21, and multiple anti-collision ribs 43 are all installed on the side wall of the bucket cylinder housing 41 away from the bucket rod 311. The partition plate 52 and the self-recovering airbag 53 are both installed inside the protective cover 51. The two cleaning and cooling components 60 are respectively fixedly installed on the two side walls of the protective cover 51, and the protective support shell 61 is installed on the side wall of the protective cover 51.

[0044] During use: 1. During mining, the cylinder of the excavator is often hit by the ore, causing the cylinder housing to sag. By setting up a protective airbag 50, the ore is prevented from directly damaging the cylinder. When the bucket 32 ​​is excavating the mine, the extrusion rod 42 of the bucket hydraulic component 40 retracts and contracts in the bucket cylinder housing 41, so that the bucket 32 ​​flips over to excavate the mine. When the extrusion rod 42 moves toward the inside of the bucket cylinder housing 41, the push rod 71 follows the extrusion rod 42 to move toward the self-restoring airbag 53. The push rod 71 pushes the extrusion plate 72 to squeeze the self-restoring airbag 53, and the self-restoring airbag 53 contracts. The gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the cooling pipe 811, or the gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the plastic cleaning pipe 82. The gas is discharged into the scraper rubber ring 80 through the exhaust pipe 62. The speed at which the gas is discharged from the recovery airbag 53 is lower than the speed at which the gas is discharged from the two cooling tubes 811 and the two plastic cleaning tubes 82. The scraper rubber ring 80 expands to better abut the extrusion rod 42, so that the scraper rubber ring 80 scrapes off the dust and lumps attached to the surface of the extrusion rod 42, preventing the dust from entering the interior of the bucket cylinder housing 41 and thereby contaminating the oil inside the bucket cylinder housing 41. At the same time, it prevents the lumps attached to the surface of the extrusion rod 42 from hitting the outside of the bucket cylinder housing 41, thereby wearing and damaging the bucket cylinder housing 41.

[0045] 2. The gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the cooling pipe 811 to form a cooling airflow F1. The cooling airflow F1 is used to cool the extrusion rod 42 after being discharged from the cooling pipe 811, so as to prevent the extrusion rod 42 from being overheated for a long time, thereby reducing the service life of the extrusion rod 42.

[0046] 3. The gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the plastic cleaning pipe 82 to form a clean airflow F2. After being discharged from the plastic cleaning pipe 82, the clean airflow F2 is used to clean the dust attached to the surface of the extrusion rod 42 to prevent the dust from entering the interior of the bucket cylinder housing 41 and then polluting the oil inside the bucket cylinder housing 41. The scraper rubber ring 80 expands to scrape the dust attached to the surface of the extrusion rod 42 to prevent the dust that cannot be blown away by the clean airflow F2 from entering the interior of the bucket cylinder housing 41 and then polluting the oil inside the bucket cylinder housing 41. The plastic cleaning pipe 82 and the cooling pipe 811 can adjust their directions to better cool the extrusion rod 42 or blow away the dust attached to the surface of the extrusion rod 42.

[0047] 4. When the extrusion plate 72 squeezes the self-restoring airbag 53, the air inlet 54 is blocked, so that the gas inside the self-restoring airbag 53 cannot be discharged from the air inlet 54, and then the gas inside the self-restoring airbag 53 is discharged from the exhaust pipe 62. When the extrusion plate 72 squeezes toward the self-restoring airbag 53, the spring 55 is compressed, and the spring 55 can accelerate the recovery speed of the extrusion rod 42, and then accelerate the extension speed of the bucket hydraulic component 40, and speed up the excavation speed of the bucket. The protective airbag component 50, the protective support shell 61 and the plurality of anti-collision ribs 43 can prevent the ore from directly damaging the oil cylinder, and then prevent the ore from damaging the oil cylinder. The push rod 71 can prevent the ore from damaging the extrusion rod 42, and prevent the extrusion rod 42 from being unable to extend and retract into the bucket oil cylinder housing 41. After the extrusion rod 42 is pulled out of the bucket cylinder housing 41, the push rod 71 releases the extrusion on the self-restoring airbag 53, and the end of the self-restoring airbag 53 adjacent to the extrusion plate 72 is stretched and tightened, thereby opening the air inlet 54, so that the gas in the self-restoring airbag 53 can be quickly replenished, preventing the self-restoring airbag 53 from lacking gas when the excavation mechanism 30 is actuated next time, thereby failing to form the cooling airflow F1 and the cleaning airflow F2, thereby making it impossible for the cooling airflow F1 to cool the extrusion rod 42, thereby reducing the service life of the extrusion rod 42; thereby making it impossible for the cleaning airflow F2 to blow away the dust attached to the surface of the extrusion rod 42, thereby causing the dust to enter the bucket cylinder housing 41 and contaminate the oil.

[0048] The present invention provides a scraper rubber ring 80. When the extrusion rod 42 moves toward the inner side of the bucket cylinder housing 41, the push rod 71 follows the extrusion rod 42 to move toward the self-restoring airbag 53. The push rod 71 pushes the extrusion plate 72 to squeeze the self-restoring airbag 53. The self-restoring airbag 53 contracts. The gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the cooling pipe 811. Or the gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the plastic cleaning pipe 82. The gas is discharged to the scraper rubber ring through the exhaust pipe 62. In the rubber ring 80, the speed at which the self-recovering airbag 53 discharges gas is lower than the speed at which the two cooling tubes 811 and the two plastic cleaning tubes 82 discharge gas. The scraper rubber ring 80 expands to better abut the extrusion rod 42, so that the scraper rubber ring 80 scrapes off the dust and lumps attached to the surface of the extrusion rod 42, preventing the dust from entering the interior of the bucket cylinder housing 41 and thereby contaminating the oil inside the bucket cylinder housing 41. At the same time, it prevents the lumps attached to the surface of the extrusion rod 42 from hitting the outside of the bucket cylinder housing 41, thereby wearing and damaging the bucket cylinder housing 41.

[0049] By providing a cooling pipe 811, the gas in the self-recovering airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the cooling pipe 811 to form a cooling airflow F1. After being discharged from the cooling pipe 811, the cooling airflow F1 is used to cool the extrusion rod 42 to prevent the extrusion rod 42 from being overly hot for a long time, thereby reducing the service life of the extrusion rod 42.

[0050] By setting the plastic cleaning tube 82, the gas in the self-restoring airbag 53 is discharged through the exhaust pipe 62, the scraper rubber ring 80 and the plastic cleaning tube 82 to form a clean airflow F2. After being discharged from the plastic cleaning tube 82, the clean airflow F2 is used to clean the dust attached to the surface of the extrusion rod 42 to prevent the dust from entering the interior of the bucket cylinder housing 41 and then polluting the oil inside the bucket cylinder housing 41. The scraper rubber ring 80 expands to scrape the dust attached to the surface of the extrusion rod 42 to prevent the dust that cannot be blown away by the clean airflow F2 from entering the interior of the bucket cylinder housing 41 and then polluting the oil inside the bucket cylinder housing 41. The plastic cleaning tube 82 and the cooling tube 811 can adjust the direction to better cool the extrusion rod 42 or blow away the dust attached to the surface of the extrusion rod 42.

[0051] By setting the air inlet 54, when the extrusion plate 72 squeezes the self-restoring airbag 53, the air inlet 54 is blocked, so that the gas inside the self-restoring airbag 53 cannot be discharged from the air inlet 54, and then the gas inside the self-restoring airbag 53 is discharged from the exhaust pipe 62. When the extrusion plate 72 squeezes toward the self-restoring airbag 53, the spring 55 is compressed, and the spring 55 can accelerate the recovery speed of the extrusion rod 42, and then accelerate the extension speed of the bucket hydraulic component 40, and speed up the excavation speed of the bucket. The protective airbag component 50, the protective support shell 61 and the plurality of anti-collision ribs 43 can prevent the ore from directly damaging the oil cylinder, and then prevent the ore from damaging the oil cylinder. The push rod 71 can prevent the ore from damaging the extrusion rod 42, and prevent the extrusion rod 42 from being unable to extend and retract into the bucket oil cylinder housing 41. After the extrusion rod 42 is pulled out of the bucket cylinder housing 41, the push rod 71 releases the extrusion on the self-restoring airbag 53, and the end of the self-restoring airbag 53 adjacent to the extrusion plate 72 is stretched and tightened, thereby opening the air inlet 54, so that the gas in the self-restoring airbag 53 can be quickly replenished, preventing the self-restoring airbag 53 from lacking gas when the excavation mechanism 30 is actuated next time, thereby failing to form the cooling airflow F1 and the cleaning airflow F2, thereby making it impossible for the cooling airflow F1 to cool the extrusion rod 42, thereby reducing the service life of the extrusion rod 42; thereby making it impossible for the cleaning airflow F2 to blow away the dust attached to the surface of the extrusion rod 42, thereby causing the dust to enter the bucket cylinder housing 41 and contaminate the oil.

[0052] The present invention has a simple structure and can effectively prevent ore from damaging the oil cylinder. When the bucket 32 ​​is actuated, the extrusion rod 42 can squeeze the self-restoring airbag 53. The self-restoring airbag 53 releases the internal gas after being squeezed. The gas can not only blow away the dust attached to the surface of the extrusion rod 42, and prevent the dust from entering the interior of the bucket cylinder housing 41 and then contaminating the oil inside the bucket cylinder housing 41; it can also cool the extrusion rod 42 to prevent the extrusion rod 42 from being overly hot for a long time, thereby reducing the service life of the extrusion rod 42.

[0053] All possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An excavator for mining and having a protective device, characterized in that: The invention comprises a moving assembly (10), a control assembly (20) and an excavating mechanism (30), wherein the moving assembly (10) is placed on the ground, the control assembly (20) is mounted on the top of the moving assembly (10), the excavating mechanism (30) is mounted on one end of the control assembly (20), and the excavating mechanism (30) comprises a swing arm (31), a bucket (32) and a bucket hydraulic assembly (33), wherein one end of the swing arm (31) is hingedly connected to one end of the control assembly (20), the bucket (32) is hingedly connected to the other end of the swing arm (31), and the bucket hydraulic assembly (33) is mounted on the swing arm (31). The bucket hydraulic component (33) is mounted on the other side wall of the swing arm (31), and comprises a bucket hydraulic component (40), a protective airbag component (50), two cleaning and cooling components (60) and an extrusion component (70). The bucket hydraulic component (40) is mounted on the other side wall of the swing arm (31), the protective airbag component (50) is fixedly sleeved on the outside of one end of the bucket hydraulic component (40), the two cleaning and cooling components (60) are respectively mounted on two side walls of the protective airbag component (50), and one end of the extrusion component (70) is connected to the bucket hydraulic component (40), and the other end is connected to the protective airbag component (50).

2. The excavator for mine excavation with a protective device according to claim 1, characterized in that: The moving assembly (10) comprises two track members (11) and a support base (12); the two track members (11) are placed on the ground, and two ends of the support base (12) are respectively abutted against the inside of the two track members (11).

3. The excavator for mine excavation with a protective device according to claim 2, characterized in that: The control assembly (20) comprises a counterweight rotating platform (21) and a driver's seat (22); the bottom of the counterweight rotating platform (21) is rotatably clamped on the top of the support base (12); and the driver's seat (22) is mounted on one end of the top of the counterweight rotating platform (21).

4. The excavator for mine excavation with a protective device according to claim 3, characterized in that: The swing arm member (31) comprises a boom (310), an arm (311), two boom hydraulic cylinders (312) and an arm hydraulic cylinder (313); a counterweight rotating platform (21) is provided with a hinge groove (210) at the top of one end adjacent to the boom (310); two fixing blocks (211) are installed on the bottom side wall of the hinge groove (210); two side walls at one end of the boom (310) are hinged to the two fixing blocks (211); one end of the arm (311) is hinged to the other end of the boom (310); and the bucket (32) is hinged to the other end of the arm (311). A hinge block (212) is installed at one end of the counterweight rotating platform (21) adjacent to the bucket (32), two boom hydraulic cylinders (312) are respectively located on two side walls of the boom (310), and one end of the two boom hydraulic cylinders (312) is respectively hingedly connected to the two hinge blocks (212), the other end of the two boom hydraulic cylinders (312) is hingedly connected to the middle of the boom (310), one end of the arm hydraulic cylinder (313) is hingedly connected to the middle of the boom (310), and the other end of the arm hydraulic cylinder (313) is hingedly connected to one end of the arm (311).

5. The excavator for mine excavation with a protective device according to claim 4, characterized in that: The bucket hydraulic component (40) comprises a bucket cylinder housing (41), an extrusion rod (42) and a plurality of anti-collision ribs (43); one end of the bucket cylinder housing (41) is hingedly connected to one end of the bucket rod (311) and the bucket (32); one end of the extrusion rod (42) is slidably inserted into the interior of the bucket cylinder housing (41), and the other end of the extrusion rod (42) is hingedly connected to the bucket rod (311); and the plurality of anti-collision ribs (43) are all mounted on a side wall of the bucket cylinder housing (41) away from the bucket rod (311).

6. The excavator for mine excavation with a protective device according to claim 5, characterized in that: The extrusion member (70) comprises an L-shaped push rod (71) and an extrusion plate (72); one end of the push rod (71) is fixedly connected to an end of the extrusion rod (42) away from the bucket cylinder housing (41); and a side wall of the extrusion plate (72) is fixedly connected to the other end of the push rod (71).

7. The excavator for mine excavation with a protective device according to claim 6, characterized in that: The protective airbag component (50) comprises a protective cover (51), a partition plate (52) and a self-restoring airbag (53); the protective cover (51) is arranged outside the bucket cylinder housing (41); the partition plate (52) and the self-restoring airbag (53) are both installed inside the protective cover (51); the bucket cylinder housing (41) and the self-restoring airbag (53) are respectively located on both sides of the partition plate (52); and the self-restoring airbag (53) is located on a side of the bucket cylinder housing (41) away from the bucket cylinder housing (41).

8. The excavator with a protective device for mine excavation according to claim 7, characterized in that: One end of the self-restoring airbag (53) away from the partition plate (52) is fixedly connected to the inner side wall of the protective cover (51), an end of the self-restoring airbag (53) adjacent to the partition plate (52) is provided with an air inlet (54), and the end of the self-restoring airbag (53) adjacent to the partition plate (52) is in a tensioned state, and a spring (55) is installed at the end of the self-restoring airbag (53) away from the partition plate (52).

9. The excavator for mine excavation with a protective device according to claim 8, characterized in that: The two cleaning and cooling components (60) are respectively fixedly mounted on the two side walls of the protective cover (51), and each cleaning and cooling component (60) comprises a protective support shell (61) and an exhaust pipe (62) made of a metal material. The protective support shell (61) is mounted on the side wall of the protective cover (51), one end of the exhaust pipe (62) is inserted into the side wall of the self-recovering airbag (53) away from the partition plate (52), and the middle part of the exhaust pipe (62) is received in the interior of the protective support shell (61).

10. The excavator with a protective device for mine excavation according to claim 9, characterized in that: A scraper rubber ring (80) is sleeved on one end of the push rod (71) adjacent to the extrusion plate (72), and both sides of the scraper rubber ring (80) are respectively communicated with the other ends of the two exhaust pipes (62). Two cooling components (81) are installed on one side of the scraper rubber ring (80) adjacent to the extrusion plate (72), and the two cooling components (81) are respectively located on both sides of the push rod (71), and each cooling component (81) includes a support rod (810) and a cooling pipe (811), one end of the support rod (810) is fixedly connected to the side wall of the protective support shell (61), one end of the cooling pipe (811) is connected to the scraper rubber ring (80), and the other end of the cooling pipe (811) is connected to the scraper rubber ring (80), and the other end of the cooling pipe (811) is connected to the scraper rubber ring (80). The end of the support rod (810) faces the push rod (71), the other end of the support rod (810) is fixedly connected to the middle of the cooling tube (811), two bendable and deformable plastic cleaning tubes (82) are installed on the side of the scraping rubber ring (80) away from the extrusion plate (72), the two plastic cleaning tubes (82) are respectively located on both sides of the push rod (71), one end of each plastic cleaning tube (82) is connected to the scraping rubber ring (80), and the other end of each plastic cleaning tube (82) faces the middle of the push rod (71), and the inner tube diameter length of the exhaust pipe (62) is greater than the sum of the inner tube diameter lengths of the two cooling tubes (811) and the inner tube diameter lengths of the two plastic cleaning tubes (82).

Images