Mining digging and loading all-in-one machine

Abstract

The invention relates to the technical field of coal mining equipment, in particular to a mining digging and loading all-in-one machine, an arranged dustproof ring assembly is mainly composed of an outer ring body and an inner ring body, the outer ring body is formed by splicing two arc-shaped wrapping outer rings, and the inner ring body is formed by splicing two arc-shaped wrapping inner rings; in this way, the outer ring body and the inner ring body are convenient to mount and dismount, so that the dustproof ring assembly is convenient to dismount and mount, and subsequent maintenance and replacement are facilitated; moreover, according to the scheme, the lubricating connecting fitting is matched with the dustproof ring assembly for use, so that a lubricating effect can be provided for the contact position of the inner ring body and the piston rod during dustproof work, the inner ring body is prevented from being abraded in the long-time contact process with the piston rod, the dustproof work effect is improved, and the service life of the piston rod is prolonged. And the side wall of the piston rod cannot be damaged, surface defects are avoided, and the sealing effect of the piston rod is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining equipment, in particular to a mining-use excavator-loader integrated machine. Background Art

[0002] The coal mine excavator-loader is a tunnel excavator-loader, which is used for tunnel and shaft excavation and rapid slag loading. It integrates the functions of bottom plate milling, material loading, prying and trimming. It should have the characteristics of small size, light body and high work efficiency. It is designed for tunnel leveling, especially for tunneling, rock breaking, excavation, shoveling and loading into the lifting bucket of shafts. It can also be used for laying bottom, side excavation and wall expansion, cleaning, leveling of tunnels and other tasks.

[0003] Among them, the cutting part of the coal mine excavator and loader adopts a two-section arm, and the loading part adopts a three-section arm design to achieve flexibility at different tunnel heights; a cutting swing cylinder is installed at the rear end of the cutting part's walking platform, and the cutting gun head can swing left and right ≥30° to achieve cutting without dead angles; the cutting part and the loading part can rotate 360 degrees at the same time, and the rotary reducer of the middle auxiliary arm of the loading part adopts a dual-motor design, so that the working arm can rotate ±180°, and the working arm of the loading part can realize barrier-free excavation (opening) of grooves and loading at different heights in the tunnel, complete the excavation and installation of underground equipment chambers or connecting tunnels and dilapidated tunnel roofs and floors, excavate ditches, lay bottoms, level tunnels, and load materials into lifting buckets, etc.

[0004] When the piston rod is in operation, the piston rod is extended and retracted, and the side wall of the piston rod is adhered to dust and other impurities. In order to prevent dust and other impurities from entering the cylinder, a dust ring is provided at the mouth of the cylinder, and a corresponding sealing ring is provided at the same time to seal the mouth of the cylinder to prevent oil from overflowing when the piston rod is extended and retracted. In this process, the dust ring provided on the outside contacts the piston rod, and the dust ring and the side wall of the piston rod lack corresponding oil lubrication. Under long-term operation, on the one hand, the dust ring will be worn, which will affect its dust prevention work and may enter the inner cavity of the cylinder and affect its transmission work. On the other hand, the surface of the piston rod will also have corresponding wear, and a gap will be generated between the sealing ring and the piston rod, reducing its sealing performance, which will also affect the work of the cylinder body.

[0005] To this end, the present invention proposes a mining excavator-loader integrated machine to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a mining excavator and loader integrated machine to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a mining excavator and loader integrated machine, comprising a crawler walking section, a double-layer platform main body safety shed, a two-section arm of the cutting section, a three-section swing arm of the loading section, a hydraulic system, an electrical system, and a water treatment and dust removal spray system;

[0008] The oil cylinder in the second section arm of the cutting part includes a cylinder body, a first connecting piece, a piston rod, a second connecting piece, a dust ring assembly and a lubricating connecting fitting;

[0009] The inner cavity of the cylinder body is connected to the piston rod, a first connecting piece is fixedly provided at one end of the cylinder body, a second connecting piece is provided at one end of the piston rod, and a accommodating cavity and an installation screw groove are provided on the end face of the cylinder body connected to the piston rod, and a dust ring assembly is connected in the accommodating cavity.

[0010] Preferably, the inner cavity side wall of the accommodating cavity is symmetrically provided with positioning slots, and the positioning slots are parallel to the axis of the cylinder body.

[0011] Preferably, the dustproof ring assembly consists of an outer ring body and an inner ring body, wherein the outer ring body includes an arc-shaped wrapped outer ring, a positioning card body, an auxiliary groove, a first connecting cavity and an oil inlet; a positioning card body is fixedly provided at the middle position of the outer side wall of the arc-shaped wrapped outer ring, the positioning card body and the positioning card slot body have the same number of groups, and the two are adapted to be connected, and the inner side wall of the arc-shaped wrapped outer ring is symmetrically provided with auxiliary grooves.

[0012] Preferably, two groups of arc-shaped wrapping outer rings are provided, and the two groups of arc-shaped wrapping outer rings are butt-jointed to form a wrapping outer ring.

[0013] Preferably, a first connecting cavity is provided in the arc-shaped wrapped outer ring, and the first connecting cavity is connected to the auxiliary groove, and an oil inlet is provided in the middle position of one end of the arc-shaped wrapped outer ring, and the oil inlet is connected to the first connecting cavity.

[0014] Preferably, the inner ring body includes an arc-shaped wrapped inner ring, a mounting protrusion, a second connecting cavity and a lubrication port; the outer wall of the arc-shaped wrapped inner ring is symmetrically fixed with a mounting protrusion, and the mounting protrusion corresponds to the auxiliary groove setting position on the inner wall side of the arc-shaped wrapped outer ring, the setting group number is the same, and the two are adapted to be snap-fitted.

[0015] Preferably, a second connecting cavity is provided in the arc-shaped wrapped inner ring, the second connecting cavity is connected to the mounting protrusion, and a lubrication port is provided on the inner side wall of the arc-shaped wrapped inner ring.

[0016] Preferably, two groups of arc-shaped wrapped inner rings are provided, and the two groups of arc-shaped wrapped inner rings are connected to form a dust-proof inner ring, wherein the lubrication ports on the inner arc-shaped surface of the arc-shaped wrapped inner ring are evenly arranged, and the lubrication ports adjacent to each other along the axial direction are staggered.

[0017] Preferably, an auxiliary structure is provided in the lubrication port, and the auxiliary structure includes a load-bearing ring body, an auxiliary spherical shell, an oil outlet hole, an auxiliary spring and a connecting gasket; an auxiliary spherical shell is movably embedded in the load-bearing ring body, and oil outlet holes are evenly provided on the auxiliary spherical shell, an auxiliary spring is fixedly provided at one end of the load-bearing ring body, and a connecting gasket is fixedly provided at the other end of the auxiliary spring, and the auxiliary spherical shell and the lubrication port are provided with the same number of groups.

[0018] Preferably, the lubricating connection fittings include a first arc-shaped cover body, a second arc-shaped cover body, mounting bolts, a blocking clamp, a docking slot, a connector, an oil pipeline, an output port, a filling nozzle, a communicating flow channel and a docking cannula; the first arc-shaped cover body and the second arc-shaped cover body are provided with the same number of groups, and the two are docked to form a fastening cover plate, and the inner ring of the fastening cover plate does not contact the side wall of the piston rod, the first arc-shaped cover body and the second arc-shaped cover body are both provided with mounting holes, and both are fixedly connected by the provided mounting bolts, the inner side of the first arc-shaped cover body is fixedly provided with a blocking clamp, and the blocking clamp is connected to the arc-shaped outer ring. The oil inlet is set in a position corresponding to that of the oil inlet, and the two are adapted to be plugged in. The outer wall of the second arc-shaped cover body is provided with a docking slot, the connecting head is provided at one end of the oil pipeline, and an output port is provided on one side of the connecting head. The connecting head is stuck in the docking slot and is fixedly connected by screws. A filling nozzle is provided in the docking slot, and a connecting flow channel is provided in the second arc-shaped cover body. One end of the connecting flow channel is connected with the filling nozzle, and the other end of the connecting flow channel is connected with a docking plug. The docking plug is provided on the inner side wall of the second arc-shaped cover body, and the docking plug and the oil inlet on the arc-shaped wrapped outer ring are adapted to be plugged in.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The mining excavator designed by the present invention includes an oil cylinder device used for a rotating part. In this scheme, the inner cavity of the cylinder body is connected to the piston rod. A first connecting piece is fixedly provided at one end of the cylinder body, and a second connecting piece is provided at one end of the piston rod. The cylinder body is provided with a receiving cavity and a mounting screw groove on the end face of the end connected to the piston rod, and a dust ring assembly is connected to the receiving cavity; positioning card slots are symmetrically provided on the inner cavity side walls of the receiving cavity, and the positioning card slots are parallel to the axis of the cylinder body; the dust ring assembly is mainly composed of an outer ring body and an inner ring body, and the outer ring body is composed of two arc-shaped The outer ring is wrapped and spliced together, and the inner ring body is spliced together by two arc-shaped wrapped inner rings, which facilitates the installation and disassembly of the outer ring body and the inner ring body, and makes the disassembly and assembly of the dust ring assembly convenient, and facilitates subsequent maintenance and replacement; furthermore, this solution also uses the provided lubricating connection accessories in conjunction with the dust ring assembly. When performing dust prevention work, it can also provide a lubricating effect for the contact position between the inner ring body and the piston rod, avoiding wear of the inner ring body during long-term contact with the piston rod, improving its dust prevention effect, and will not cause damage to the side wall of the piston rod, avoiding surface defects, and ensuring its sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front side of the structural connection of the mining excavator-loader integrated machine of the present invention;

[0022] Figure 2 This is a top view of the structural connection of the mining excavator-loader of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the cylinder and the piston rod in the second section arm of the cutting part of the present invention;

[0024] Figure 4 This is an exploded diagram of the connection between the dust ring assembly and the lubrication connection accessory structure of the present invention;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of the structural connection at center A;

[0026] Figure 6 This is a schematic diagram of the connection of the arc-shaped wrapped outer ring structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the front side of the connection between the arc-shaped wrapped inner ring and the auxiliary structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the rear side of the connection between the arc-shaped wrapped inner ring and the auxiliary structure of the present invention;

[0029] Figure 9 for Figure 8 A magnified schematic diagram of the structural connection at point B in the middle;

[0030] Figure 10 This is a schematic diagram of the front side of the explosion connection of the lubricating connecting fitting structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the explosion back side of the lubricating connection fitting structure of the present invention;

[0032] Figure 12 for Figure 11 A magnified schematic diagram of the structural connection at point C in the middle;

[0033] Figure 13 for Figure 12 A magnified schematic diagram of the structural connection at point D in the middle;

[0034] Figure 14 This is a partial schematic diagram of the internal structure connection of the second arc-shaped cover of the present invention;

[0035] Figure 15 for Figure 14 Enlarged schematic diagram of the structural connection at E in the middle.

[0036] In the figure: crawler walking part 1, double-layer platform body safety shed 2, cutting part two-section arm 3, loading part swing three-section arm 4, hydraulic system 5, electrical system 6, water treatment and dust removal spray system 7, cylinder body 801, first connecting piece 802, piston rod 803, second connecting piece 804, accommodating cavity 805, positioning card slot body 806, mounting screw groove 807, arc-shaped wrapped outer ring 901, positioning card body 902, auxiliary groove 903, first connecting cavity 904, oil inlet 905, arc-shaped wrapped inner ring 100 1. Mounting protrusion 1002, second connecting cavity 1003, lubrication port 1004, bearing ring 1101, auxiliary ball shell 1102, oil outlet 1103, auxiliary spring 1104, connecting gasket 1105, first arc-shaped cover 1201, second arc-shaped cover 1202, mounting bolt 1203, blocking clamp 1204, docking slot 1205, connector 1206, oil delivery pipe 1207, output port 1208, filling nozzle 1209, connecting flow channel 1210, docking plug 1211. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1-15, a mining excavator and loader, comprising a crawler walking part 1, a double-deck platform body safety shed 2, a cutting part two-section arm 3, a loading part swing three-section arm 4, a hydraulic system 5, an electrical system 6 and a water treatment and dust removal spray system 7; the upper part of the crawler walking part 1 is provided with a double-deck platform body safety shed 2 and a hydraulic system 5, the front part of the double-deck platform body safety shed 2 is provided with a cutting part two-section arm 3, the rear part of the double-deck platform body safety shed 2 is provided with a loading part swing three-section arm 4, and the inner side of the double-deck platform body safety shed 2 is provided with an electrical system 6, wherein the oil cylinder in the cutting part two-section arm 3 includes a cylinder body 801, a first connecting member 802, a piston rod 803, a second connecting member 804, a dust ring assembly and a lubrication connection accessory;

[0039] In this solution, the inner cavity of the cylinder body 801 is connected to the piston rod 803. A first connecting piece 802 is fixedly provided at one end of the cylinder body 801, and a second connecting piece 804 is provided at one end of the piston rod 803. The cylinder body 801 is provided with a accommodating cavity 805 and an installation screw groove 807 on the end face of the end connected to the piston rod 803, and a dust ring assembly is connected to the accommodating cavity 805; wherein a positioning card slot body 806 is symmetrically provided on the side wall of the inner cavity of the accommodating cavity 805, and the positioning card slot body 806 is parallel to the axis of the cylinder body 801.

[0040] The dustproof ring assembly provided therein is mainly composed of an outer ring body and an inner ring body, and the outer ring body is composed of two arc-shaped wrapped outer rings 901 spliced together, and the inner ring body is composed of two arc-shaped wrapped inner rings 1001 spliced together, which facilitates the installation and disassembly of the outer ring body and the inner ring body, thereby making the disassembly and assembly of the dustproof ring assembly convenient, and facilitates subsequent maintenance and replacement; furthermore, this scheme also uses the provided lubricating connecting accessories in conjunction with the dustproof ring assembly. When performing dustproof work, it can also provide a lubricating effect for the contact position between the inner ring body and the piston rod 803, thereby avoiding wear of the inner ring body during long-term contact with the piston rod 803, improving its dustproof work effect, and will not cause damage to the side wall of the piston rod 803, avoiding surface defects, and ensuring its sealing effect.

[0041] For the installation of the dust ring assembly, first insert one of the arc-shaped wrapped outer rings 901 into the accommodating cavity 805, and make the positioning card body 902 on the outer wall of the arc-shaped wrapped outer ring 901 snap into the positioning card slot body 806 on the inner side of the accommodating cavity 805, and then insert the other arc-shaped wrapped outer ring 901 for installation. After removal and installation, the ends of the two arc-shaped wrapped outer rings 901 are tightly attached, and then the inner ring body is installed, that is, first insert one of the arc-shaped wrapped inner rings 1001 into the accommodating cavity 805, and make the installation protrusion 1002 on the outer wall of the arc-shaped wrapped inner ring 1001 snap into the auxiliary groove 903 on the inner side of the arc-shaped wrapped outer ring 901, and then Insert and install the other arc-shaped wrapped inner ring 1001, and fit the ends of the two installed arc-shaped wrapped inner rings 1001 tightly. Finally, install and fix the first arc-shaped cover body 1201 and the second arc-shaped cover body 1202 through the installation bolts 1203. At the same time, the sealing clamp 1204 arranged on the inner side of the first arc-shaped cover body 1201 is inserted into the oil inlet 905 on one of the arc-shaped wrapped outer rings 901; the docking tube 1211 arranged on the inner side of the second arc-shaped cover body 1202 is inserted into the oil inlet 905 on the other arc-shaped wrapped outer ring 901; the outer ring body here includes the arc-shaped wrapped outer ring 901, the positioning clamp body 902, the auxiliary groove 903, the first connecting cavity 904 and the inlet Oil port 905; a positioning card body 902 is fixedly provided in the middle position of the outer wall of the arc-shaped wrapped outer ring 901, and the positioning card body 902 and the positioning card slot body 806 have the same number of groups, and the two are adapted to be clamped, and the inner wall of the arc-shaped wrapped outer ring 901 is symmetrically provided with auxiliary grooves 903; there are two groups of arc-shaped wrapped outer rings 901, and the two groups of arc-shaped wrapped outer rings 901 are connected to form a wrapped outer ring; a first connecting cavity 904 is provided in the arc-shaped wrapped outer ring 901, and the first connecting cavity 904 is connected to the auxiliary groove 903, and an oil inlet 905 is provided in the middle position of one end of the arc-shaped wrapped outer ring 901, and the oil inlet 905 is connected to the first connecting cavity 904; the inner ring body includes an arc-shaped wrapped Wrapped inner ring 1001, mounting protrusion 1002, second connecting cavity 1003 and lubrication port 1004; the outer side wall of the arc-shaped wrapped inner ring 1001 is symmetrically fixed with mounting protrusion 1002, and the mounting protrusion 1002 is corresponding to the auxiliary groove 903 on the inner wall side of the arc-shaped wrapped outer ring 901 in position, with the same number of groups, and the two are adapted to be snapped in; a second connecting cavity 1003 is provided in the arc-shaped wrapped inner ring 1001, the second connecting cavity 1003 is connected with the mounting protrusion 1002, and a lubrication port 1004 is provided on the inner side wall of the arc-shaped wrapped inner ring 1001; there are two groups of arc-shaped wrapped inner rings 1001, and the two groups of arc-shaped wrapped inner rings 1001 are docked to form a dust-proof inner ring.

[0042] In order to further improve the use effect of the dust ring assembly, the oil delivery pipe 1207 in the lubrication connection accessory provided in this scheme provides lubricating oil to it, that is, the second arc-shaped cover 1202 is supplied with oil through the oil delivery pipe 1207, and the introduced lubricating oil enters the filling nozzle 1209 from the output port 1208 of the connector 1206, and then flows out from the docking plug 1211 through the connecting flow channel 1210, and then enters the oil inlet 905 in one of the arc-shaped wrapped outer rings 901, and then enters the first connecting cavity 904 of the arc-shaped wrapped outer ring 901, wherein the auxiliary groove 903 provided therein is connected with the first connecting cavity 904, the mounting protrusion 1002 is connected with the second connecting cavity 1003, and the mounting protrusion 1002 is clamped with the auxiliary groove 903, that is, the lubricating oil then enters the second connecting cavity 1003 from the first connecting cavity 904, and finally enters through the lubrication port 1004 on the inner side of the arc-shaped wrapped inner ring 1001 The oil will overflow and then lubricate the side wall of the piston rod 803, providing a lubrication effect between the piston rod 803 and the arc-shaped wrapped inner ring 1001, forming a lubricating oil film between the two, thereby improving the working smoothness and service life of the piston rod 803, wherein the lubrication ports 1004 on the inner arc surface of the arc-shaped wrapped inner ring 1001 are evenly arranged, and the lubrication ports 1004 adjacent to each other along the axial direction are staggered, that is, the piston rod 803 moves on the axis, and the staggered lubrication ports 1004 can make the lubricating oil have a better lubrication effect and avoid the generation of lubrication dead corners as much as possible; and after the adhered lubricating oil is brought out by the piston rod 803 and during the retraction process, the oil adhered to the piston rod 803 will be blocked on the outside by the arc-shaped wrapped inner ring 1001, and the blocked lubricating oil forms a dust-proof auxiliary ring, that is, an oil ring is formed, which can better assist the dust-proof work of the arc-shaped wrapped inner ring 1001.

[0043] The first arc-shaped cover body 1201 and the second arc-shaped cover body 1202 in the lubrication connection fitting here are provided with the same number of groups, and the two are butted together to form a fastening cover plate, and the inner ring of the fastening cover plate does not contact the side wall of the piston rod 803, and the first arc-shaped cover body 1201 and the second arc-shaped cover body 1202 are both provided with mounting holes, and both are fixedly connected by the provided mounting bolts 1203, and a blocking clamp 1204 is fixedly provided on the inner side of the first arc-shaped cover body 1201, and the blocking clamp 1204 corresponds to the setting position of the oil inlet 905 on the arc-shaped wrapped outer ring 901, and the two are adapted to be plugged in, and the outer wall of the second arc-shaped cover body 1202 is provided with a docking slot 1205, and the connection The connector 1206 is arranged at one end of the oil pipeline 1207, and an output port 1208 is provided on one side of the connector 1206. The connector 1206 is stuck in the docking slot 1205 and is fixedly connected by screws. A filling nozzle 1209 is provided in the docking slot 1205, and a connecting channel 1210 is provided in the second arc-shaped cover body 1202. One end of the connecting channel 1210 is connected to the filling nozzle 1209, and the other end of the connecting channel 1210 is connected to the docking plug 1211. The docking plug 1211 is arranged on the inner wall of the second arc-shaped cover body 1202, and the docking plug 1211 and the oil inlet 905 on the arc-shaped wrapped outer ring 901 are adapted to be plugged in.

[0044] In order to better avoid friction damage and lubrication work in the contact between the arc-shaped wrapped inner ring 1001 and the piston rod 803, this solution also provides an auxiliary structure in the lubrication port 1004 on the inner side of the arc-shaped wrapped inner ring 1001, and the auxiliary ball shell 1102 is movably embedded in the load-bearing ring body 1101 in the auxiliary structure, and the auxiliary ball shell 1102 is evenly provided with oil outlet holes 1103, one end of the load-bearing ring body 1101 is fixedly provided with an auxiliary spring 1104, and the other end of the auxiliary spring 1104 is fixedly provided with a connecting gasket 1105, and the auxiliary ball shell 1102 and the lubrication port 1004 are provided with the same number of groups; for the installation of the auxiliary structure, the load-bearing ring body 1101 is directly inserted into the lubrication port 1004, and the connecting gasket 1105 is provided at the end of the auxiliary spring 1104 at one end of the load-bearing ring body 1101 It contacts the inner side of the second connecting cavity 1003 in the arc-shaped wrapped inner ring 1001, so that the initial installation state of the auxiliary ball shell 1102 exceeds the inner wall of the arc-shaped wrapped inner ring 1001, that is, after the arc-shaped wrapped inner ring 1001 is installed, the installed auxiliary ball shell 1102 can be in close contact with the side wall of the piston rod 803, and due to the auxiliary spring 1104, the auxiliary ball shell 1102 will not squeeze the side wall of the piston rod 803. Oil outlet holes 1103 are evenly arranged in the auxiliary ball shell 1102. When the piston rod 803 is running, the piston rod 803 drives the auxiliary ball shell 1102 to roll. The evenly distributed oil outlet holes 1103 can make the distribution of lubricating oil more even on the one hand, and on the other hand, it can also improve the smoothness of the contact between the piston rod 803 and the arc-shaped wrapped inner ring 1001.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A mining excavator and loader, comprising a crawler walking section (1), a double-deck platform main body safety shed (2), a two-section arm of a cutting section (3), a three-section swing arm of a loading section (4), a hydraulic system (5), an electrical system (6), and a water treatment and dust removal spray system (7); Its characteristics are: The oil cylinder in the second-section arm (3) of the cutting part comprises a cylinder body (801), a first connecting piece (802), a piston rod (803), a second connecting piece (804), a dust ring assembly and a lubricating connecting fitting; The inner cavity of the cylinder body (801) is connected to the piston rod (803), a first connecting piece (802) is fixedly provided at one end of the cylinder body (801), a second connecting piece (804) is provided at one end of the piston rod (803), and a receiving cavity (805) and a mounting screw groove (807) are provided on the end face of the cylinder body (801) connected to the piston rod (803), and a dust ring assembly is connected to the receiving cavity (805).

2. The mining excavator and loader according to claim 1, characterized in that: The inner side wall of the accommodating cavity (805) is symmetrically provided with a positioning slot body (806), and the positioning slot body (806) is parallel to the axis of the cylinder body (801).

3. The mining excavator and loader according to claim 1, characterized in that: The dust ring assembly consists of an outer ring body and an inner ring body, wherein the outer ring body includes an arc-shaped wrapped outer ring (901), a positioning card body (902), an auxiliary groove (903), a first connecting cavity (904) and an oil inlet (905); a positioning card body (902) is fixedly provided at the middle position of the outer side wall of the arc-shaped wrapped outer ring (901), the positioning card body (902) and the positioning card slot body (806) have the same number of groups, and the two are adapted to be clamped, and the inner side wall of the arc-shaped wrapped outer ring (901) is symmetrically provided with auxiliary grooves (903).

4. The mining excavator and loader according to claim 3, characterized in that: The arc-shaped wrapping outer rings (901) are provided in two groups, and the two groups of arc-shaped wrapping outer rings (901) are butt-jointed to form a wrapping outer ring.

5. The mining excavator and loader according to claim 3, characterized in that: A first communicating cavity (904) is provided in the arc-shaped wrapped outer ring (901), and the first communicating cavity (904) is connected to the auxiliary groove (903). An oil inlet (905) is provided in the middle position of one end of the arc-shaped wrapped outer ring (901), and the oil inlet (905) is connected to the first communicating cavity (904).

6. The mining excavator and loader according to claim 3, characterized in that: The inner ring body comprises an arc-shaped wrapped inner ring (1001), a mounting protrusion (1002), a second connecting cavity (1003) and a lubrication port (1004); the outer wall of the arc-shaped wrapped inner ring (1001) is symmetrically fixedly provided with the mounting protrusion (1002), and the mounting protrusion (1002) and the auxiliary groove (903) on the inner wall side of the arc-shaped wrapped outer ring (901) are arranged in corresponding positions, the number of arrangement groups is the same, and the two are adapted to be snap-fitted.

7. The mining excavator and loader according to claim 6, characterized in that: A second connecting cavity (1003) is provided in the arc-shaped wrapped inner ring (1001), the second connecting cavity (1003) is connected to the mounting protrusion (1002), and a lubrication port (1004) is provided on the inner side wall of the arc-shaped wrapped inner ring (1001).

8. The mining excavator and loader according to claim 6, characterized in that: The arc-shaped wrapped inner rings (1001) are provided in two groups, and the two groups of arc-shaped wrapped inner rings (1001) are butt-jointed to form a dustproof inner ring, wherein the lubrication ports (1004) on the inner arc-shaped surfaces of the arc-shaped wrapped inner rings (1001) are evenly arranged, and the lubrication ports (1004) adjacently arranged along the axial direction are staggered.

9. The mining excavator and loader according to claim 6, characterized in that: An auxiliary structure is provided in the lubrication port (1004), and the auxiliary structure comprises a bearing ring (1101), an auxiliary spherical shell (1102), an oil outlet hole (1103), an auxiliary spring (1104) and a connecting gasket (1105); the bearing ring (1101) is movably provided with an auxiliary spherical shell (1102), and the oil outlet holes (1103) are evenly provided on the auxiliary spherical shell (1102); one end of the bearing ring (1101) is fixedly provided with an auxiliary spring (1104), and the other end of the auxiliary spring (1104) is fixedly provided with a connecting gasket (1105); and the auxiliary spherical shell (1102) and the lubrication port (1004) are provided with the same number of groups.

10. The mining excavator and loader according to claim 1, characterized in that: The lubricating connecting fitting comprises a first arc-shaped cover (1201), a second arc-shaped cover (1202), a mounting bolt (1203), a blocking clamp (1204), a docking slot (1205), a connector (1206), an oil delivery pipe (1207), an output port (1208), a filling nozzle (1209), a communicating flow channel (1210) and a docking spigot (1211); the first arc-shaped cover (1201) and the second arc-shaped cover (1202) are provided with the same number of groups. , and the two are butted together to form a fastening cover plate, and the inner ring of the fastening cover plate does not contact the side wall of the piston rod (803), the first arc-shaped cover body (1201) and the second arc-shaped cover body (1202) are both provided with mounting holes, and both are fixedly connected by the provided mounting bolts (1203), the inner side of the first arc-shaped cover body (1201) is fixedly provided with a blocking clamp (1204), and the blocking clamp (1204) is connected to the oil inlet ( 905) are provided at corresponding positions, and the two are adapted to be plugged in. The outer wall of the second arc-shaped cover (1202) is provided with a docking slot (1205), the connector (1206) is provided at one end of the oil delivery pipe (1207), and an output port (1208) is provided on one side of the connector (1206), the connector (1206) is stuck in the docking slot (1205), and is fixedly connected by screws, and a filling nozzle (1209) is provided in the docking slot (1205). A connecting flow channel (1210) is provided in the second arc-shaped cover body (1202), one end of the connecting flow channel (1210) is connected to the filling nozzle (1209), and the other end of the connecting flow channel (1210) is connected to the docking plug (1211), and the docking plug (1211) is provided on the inner side wall of the second arc-shaped cover body (1202), and the docking plug (1211) and the oil inlet (905) on the arc-shaped wrapped outer ring (901) are adapted to be plugged in.

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