CN218582089U - Rational in infrastructure type rod end driven bearing device - Google Patents

Abstract

The utility model relates to a rational in infrastructure type rod end driven bearing device mainly includes middle stator module, peripheral rotating assembly, lubricated bearing assembly, front end driven connecting elements, the spacing supporting component of tail end to and the buffering of setting between fixed component and rotating member hinders and lets out the subassembly. The application aerodynamics principle, external dust or the filth that can't avoid being inhaled fixed component and rotating member handing-over department for the during operation has set up a high-efficient escape passage rationally, it is extruded the entering by inspiratory dust or filth among the prior art effectively to have overcome, and the high pressure is detained in the oil groove top, lead to destroying the oil blanket, get into in the oil groove, thereby influence ball bearing's normal operating, influence bearing device's job stabilization nature and normal working life, and still need often shut down the maintenance, influence construction progress and operating efficiency, increase the work load of maintaining the maintenance and daily use cost a great deal of not enough, rational in infrastructure and science, reliable operation and steady, there is very strong practicality.

Description

Rational-structure type rod end driven bearing device

Technical Field

The utility model relates to a mechanical transmission component technical field, especially a rational in infrastructure type rod end driven bearing device.

Background

The bearing is an important part in the modern mechanical equipment, and the main function of the bearing is to support a mechanical rotating body, reduce the friction coefficient in the motion process of the mechanical rotating body and ensure the rotation precision and the balanced operation of the mechanical rotating body. And is also a functional component for reducing the load friction coefficient in the mechanical transmission process. Greater load capacity and impact resistance, as well as a longer reliable working life, are the most fundamental requirements. Mechanical bearings are classified into two types, rolling bearings and sliding bearings according to the friction property between moving elements, and are widely used in machine equipment and instruments and meters which are suitable for the mechanical bearings. In heavy machinery, a sliding bearing is combined with other mechanical parts to form an applicable bearing device which is fixed and limited to the sliding bearing and has a certain function of resisting environmental influence, when the bearing device is arranged at two ends of a rod body, the bearing device can play a role of fixing and supporting a limit rod end and also play a role of ensuring the stable and low-resistance running of the rod body, and the bearing device is widely applied to heavy machinery which has the advantages of low requirement on concentricity, complex working environment, high surface pressure and slow-forward swinging or rotating motion, such as mechanical drilling, mining machinery, water conservancy and pollutant environmental protection treatment. The bearing device is commonly called as a rod end joint bearing device in the industry, the rod end joint bearing device is called as a rod end bearing device for short, when in use, the bearing device is arranged at two ends of a rod body in pairs, the driving and driven parts with slightly different functions and structures are arranged, the rod body is arranged at a driving end for receiving external kinetic energy and is a rod end driving bearing device, the rod body is arranged at the other end of the rod body for supporting, and a rotating rod body drives the rod body to synchronously run and is a rod end driven bearing device, and the rod body and the rod end driving bearing device are arranged in pairs and run coordinately to jointly support the rod body in a stable operation state. The utility model relates to a for overcoming the innovative design product of its not enough and development on the basis of current traditional rod end driven bearing device, along with the progress of science and technology, traditional rod end driven bearing device's structure is also perfect day by day, generally all include middle stator module, peripheral rotating assembly, lubricated bearing assembly, the front end is driven connecting elements and the spacing supporting component of tail end, initial working phase's effect is good, but along with the lapse of live time, discover its long-term job stabilization nature relatively poor gradually, reliable working life is very short in succession, the time can be because of taking place the rotational speed inequality, the dead condition of card even often needs the maintenance of shutting down, and discovery during the maintenance, it has the foreign matter to cause because of extruding in the lubricating oil annular mostly, it has the filth solidification in the inslot to seriously discover even, influence ball bearing's normal operating, thereby influence the steady operation of the body of rod, cause and influence operating efficiency, construction quality and construction cost. Therefore, the rod end driven bearing with the existing structure is not scientific and reasonable in structure, not ideal in practical effect, large in daily maintenance workload, high in construction cost and the like, and is not ideal from the aspects of economy and practicability. It is necessary to start from the perspective of rationalization and scientificity of the structure and to make innovative improvement so as to meet the special requirements of heavy mechanized operation equipment on high load, high efficiency and low cost construction in a complex environment.

Disclosure of Invention

The utility model discloses an overcome not enough that current rod end driven bearing device exists, provide a structure relatively scientific and reasonable, antipollution and interference killing feature are all strong, are favorable to reducing daily maintenance work load, improve job stabilization nature and ensure normal life, can satisfy the novel rod end driven bearing device that is suitable for equipment high efficiency and continuous operation requirement in the complex environment.

The utility model discloses rational in infrastructure type rod end driven bearing device, the main part includes middle stator module, peripheral rotating assembly, and lubricated bearing subassembly, front end are driven connecting elements and the spacing supporting component of tail end, and its characterized in that still increases and is provided with the buffering and hinders and let out the subassembly, wherein:

the middle stator component mainly comprises a stator shaft, a fixed sleeve arranged on the periphery of the stator shaft and a positioning disc arranged at the tail ends of the stator shaft and the fixed sleeve;

the peripheral rotating assembly mainly comprises a rotating shell and a rotating disk;

the lubricating bearing assembly mainly comprises a lubricating oil ring groove formed by combining an inner ring groove ring fixedly arranged on a fixed sleeve in the middle stator assembly and an outer ring groove ring correspondingly fixedly arranged on a rotating shell in the peripheral rotating assembly, a ball bearing movably arranged in the lubricating oil ring groove, a leakage-proof cap arranged at the bottom end of the lubricating oil groove and an oil seal arranged above the groove surface;

the front-end driven connecting component main body is in a stepped cylindrical shape and consists of a bottom seat ring and an upper rod end connecting sleeve, wherein a limiting concave ring is fixedly arranged on the peripheral bottom ring surface of the bottom seat ring, a plurality of pin extending limiting holes are fixedly arranged on the ring surface of the limiting concave ring as required, and a limiting snap ring B is formed by the outer ring edge of the limiting concave ring;

the tail end limiting and supporting component has the functions of pulling and reinforcing a middle stator component, adjusting and controlling the integral jacking force and improving the integral stability, and mainly comprises a threaded connecting sleeve arranged in a stator shaft, an ejector rod with one end fixedly arranged in the stator shaft and the other end rotatably arranged in the inner side end of the internal threaded connecting sleeve, a thrust box fixedly arranged on the outer surface of the positioning disc, a spring box fixedly arranged on the outer surface of the thrust box, and a compression spring arranged in a cavity of the spring box, wherein a main body extends in the spring box, a threaded lead screw with one end penetrating through the positioning disc and the thrust box is rotatably arranged in the outer side end of the internal threaded connecting sleeve, a lead screw nut which is matched and meshed with an internal thread of the threaded lead screw and is fixedly arranged at the outer front end part and is matched and meshed with an external thread of a cylinder opening of the spring box, and a reinforced frame with a support leg fixedly arranged at the outer edge of the cylinder opening of the spring box and a support leg fixedly arranged at the edge close to the back side of the positioning disc;

the buffering leakage-proof component mainly comprises a buffering movable ring arranged at the corner of the lower side of the inner ring surface of the rotating disc, a plurality of anti-rotation pins which are transversely and fixedly arranged on the inner ring surface near the buffering movable ring, the end surface of each anti-rotation pin is flush with the inner ring surface of the buffering movable ring, and the anti-rotation pins have the functions of blocking and limiting the displacement of the buffering movable ring;

the fixed sleeve is fixedly sleeved on the periphery of the stator shaft, a limit convex ring is fixedly arranged at the near front end part of the outer side sleeve surface, a bolt limit mounting hole for assembling and interconnecting a positioning disc is transversely and fixedly arranged on the near tail end outer side surface, the bottom ring surface and the middle and lower outer side sleeve surface of the limit convex ring are limit fixing surfaces of a bearing inner ring groove ring, a limit placing groove of a buffer static ring and a plurality of compression spring placing holes with elastic jacking buffer static ring function pins are arranged on the bottom ring surface of the limit convex ring in an inwards concave manner;

the positioning disc main body is disc-shaped, is covered and arranged at the tail end of the main body of the stator shaft and the fixed sleeve, and has the functions of assembling, reinforcing and interconnecting the main body of the middle stator component and the tail end limit supporting component, a screw rod extending hole is arranged in the middle of the main body, a maintenance door is fixedly arranged at a deviated position, a propping limit convex ring is fixedly arranged at the position corresponding to an inner ring groove ring on the fixed sleeve on the inner side, a plurality of bolt assembling holes corresponding to the bolt limit installing holes on the fixed sleeve are transversely and fixedly arranged on the propping limit convex ring according to requirements, a plurality of lubricating oil injecting holes are fixedly arranged at the position corresponding to a lubricating oil ring groove according to requirements, and a plurality of support legs of the reinforced frame rigidly connected with the edge of the spring box are fixedly arranged at the position close to the edge of the disc surface of the positioning disc;

the main body of the rotary shell is in a ring shape, the edge of the top of the main surface of the main body is provided with a plurality of convex assembling pillars with assembling holes at intervals as required, the inner annular surface of the main body is provided with a limiting snap ring A for limiting the outer ring groove ring and the oil seal, and the bottom surface of the main body is provided with a plurality of bolt mounting holes for limiting and mounting the leakage-proof cover as required; the main body of the rotating disk is in a disk shape with the periphery matched with the periphery of the rotating shell in an assembling way, is assembled and connected with an assembling pillar on the rotating shell through a fixing bolt, and is arranged on the front end face of the rotating shell, a limit clamp bulge is fixedly arranged on the ring surface of the inner side of the main body, one side of the limit clamp bulge is provided with the buffer moving ring, the other side of the limit clamp bulge is provided with an anti-rotation pin, the end part of the anti-rotation pin is flush with the inner side surface of the buffer moving ring and has the function of limiting the buffer moving ring, a limit groove for clamping and limiting the edge of the front end driven connecting component in a sleeving way and an outer convex driven limit bayonet lock embedded on the convex ring at the inner side of the limit groove are fixedly arranged on the front end surface of the main surface close to the inner side of the main surface;

under the assembly state during working, the middle stator assembly and the tail end limiting support assembly are assembled and interconnected from front to back by a positioning disc to form a rigid interconnection body which has adjustable jacking force and can be used for stabilizing limiting support, the peripheral rotating assembly and the front end driven connecting component are mutually inserted and connected with each other through a pin extending limiting hole on the front end driven connecting component and an outward convex driven limiting bayonet lock on the rotating disc, and the rotation kinetic energy is transmitted, so that the peripheral rotating assembly synchronously rotates around the middle stator assembly under the supporting and matching of the lubricating bearing assembly, a relative centrifugal force depending on the rotating speed is generated at the joint of the middle stator assembly and the peripheral rotating assembly, and a corresponding suction force is generated between the peripheral rotating assembly and the front end driven connecting component.

Based on the above conception, the utility model discloses rational in infrastructure type rod end driven bearing device, because the reasonable rigid support body that the top holding force is adjustable, can supply stable and reliable spacing rod end that uses the aerodynamics principle scientifically between rotator and fixed body, reasonably for can't avoid being sucked into the environmental dust or filth of the junction of middle stator module and peripheral rotating assembly, through increasing the method of setting up the buffering and leakage-proof assembly, creatively sets up a special drainage channel, makes full use of the centrifugal force when the bearing device works and produces the suction to the front end and the external drainage force to the tail end, makes the dust or filth in the surrounding environment after being sucked through the clearance between buffering fixed ring and buffering movable ring, smoothly flies through the external drainage groove and splashes outwards, thereby realize stopping that inhaled environmental dust or filth destroys the oil blanket, extrude in the lubricating oil annular, influence ball bearing's normal work or shorten life's the condition, the rod end driven bearing device among the prior art exists is inhaled and is entered into the environmental dust or the filth of handing-over department because of the nowhere discharges and high pressure rigid extrusion to the oil groove top, and pass through or destroy the oil blanket, get into the oil groove, light make ball bearing surface wear, influence the rotation homogeneity, thereby influence the rotation stationarity of operation pole, it agglomerates to be heavy then at the inslot solidification, make ball bearing unable rotation, thereby influence the operation, lead to shutting down the maintenance, seriously influence construction progress and operating efficiency, the work load of maintaining the maintenance has increased again simultaneously, construction cost is improved. Obviously, the technical scheme of the utility model, obviously have simple structure and scientific and reasonable, job stabilization is reliable, long service life, when using maintain characteristics such as the work load is little that the technical effect is showing, is the ideal renewal product of current rod end driven bearing device.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic structural view of the fixing sleeve in the embodiment of the present invention;

fig. 3 is a schematic structural view of the rotating shell in the embodiment of the present invention.

In the figure:

1. middle stator assembly 11, stator shaft 12, fixing sleeve 121, outer sleeve surface 122 and limiting convex ring

1221. Bottom ring face 1222, upper ring face 1223, stationary ring seating groove 1224, spring seating hole

123. Bolt limit mounting hole 13, positioning disc 131, maintenance door 132 and supporting limit convex ring

133. Bolt assembling hole 134, lubricating oil injecting hole 2, peripheral rotating assembly 21, and rotating shell

211. Assembling support 212, limiting snap ring A213, bolt mounting hole 22, rotating disk 221, fixing bolt 222, limiting snap projection 223, limiting groove 224 and driven limiting snap

3. Lubricating bearing assembly 31, lubricating oil ring groove 311, inner ring groove ring 312 and outer ring groove ring

32. Ball bearing 33, leak-proof cap 34, oil seal 4, front end driving assembly 41, bottom cylinder

42. Rod end limit connecting seat 43, limit concave ring 44, pin limit extending hole 45, limit snap ring B

5. Tail end limiting support assembly 51, internal thread connecting sleeve 52, ejector rod 53 and thrust box

54. Spring box 55, compression spring 56, threaded screw 57, screw nut 58 and reinforced frame

6. Buffer leakage-proof component 61, buffer moving ring 62, buffer static ring 63, anti-rotation pin 64 and leakage-proof groove

Detailed Description

The invention will be further described with reference to the drawings and the exemplary embodiments.

In fig. 1, fig. 2 and fig. 3, the utility model discloses rational in infrastructure type rod end driven bearing device, the main part includes middle stator module 1, peripheral rotating assembly 2, lubricated bearing assembly 3, front end driven connecting elements 4 and the spacing supporting component 5 of tail end, and its characterized in that still increases and is provided with the buffering and hinders and let out subassembly 6, wherein:

the middle stator assembly 1 mainly comprises a stator shaft 11, a fixed sleeve 12 arranged on the periphery of the stator shaft 11 and a positioning disc 13 arranged at the tail ends of the stator shaft 11 and the fixed sleeve 12;

the peripheral rotating assembly 2 mainly comprises a rotating shell 21 and a rotating disk 22;

the lubricating bearing assembly 3 mainly comprises a lubricating oil ring groove 31 formed by combining an inner ring groove ring 311 fixedly arranged on a fixed sleeve 12 in the middle stator assembly 1 and an outer ring groove ring 312 correspondingly fixedly arranged on a rotating shell 21 in the peripheral rotating assembly 2, a ball bearing 32 movably arranged in the lubricating oil ring groove 31, a leakage-proof close cover 33 arranged at the bottom end of the lubricating oil ring groove 31 and an oil seal 34 arranged above the groove surface;

the front end driven connecting component 4 is in a stepped cylindrical shape and comprises a bottom seat ring 41 and an upper rod end connecting sleeve 42, a limit concave ring 43 is fixedly arranged on the peripheral bottom ring surface of the bottom seat ring 41, a plurality of pin extending limit holes 44 are fixedly arranged on the ring surface of the limit concave ring 43 according to requirements, and a limit snap ring B45 is formed by the outer ring edge of the limit concave ring 43;

the tail end limiting support assembly 5 has the functions of pulling and reinforcing the middle stator assembly 1, adjusting and controlling the integral jacking force and improving the integral stability, and mainly comprises a threaded connection sleeve 51 arranged in the stator shaft 1, an ejector rod 52 with one end fixedly arranged in the stator shaft 11 and the other end screwed in the inner side end of the internal threaded connection sleeve 51, a thrust box 53 fixedly arranged on the outer surface of the positioning disc 13, a spring box 54 fixedly arranged on the outer surface of the thrust box 53, and a compression spring 55 arranged in the cavity of the spring box 54, wherein a main body extends in the spring box 54, one end of the main body passes through the positioning disc 13 and the thrust box 53 and then is screwed in the outer side end of the internal threaded connection sleeve 51, a threaded lead screw 56 which is matched and meshed with an internal thread of the threaded lead screw 56 is arranged in the main body, an internal thread nut 57 which is matched and meshed with the internal thread of the opening of the spring box 54 is fixedly arranged at the outer front end part of the lead screw, and a reinforcing frame 58 which is fixedly arranged on the outer edge of the opening of the lead screw 54 and a support leg is fixedly arranged on the edge of the back side edge of the disc 13;

the buffering leakage-proof component 6 mainly comprises a buffering moving ring 61 arranged at the lower corner of the inner ring surface of the rotating disc 22, a plurality of anti-rotation pins 63 which are transversely and fixedly arranged on the inner ring surface near the buffering moving ring 61, the end surfaces of the anti-rotation pins are flush with the inner ring surface of the buffering moving ring 61, and have the function of blocking and limiting the displacement of the buffering moving ring 61, a buffering static ring 62 which is embedded on the front end surface of the fixed sleeve 12 at the upper side in a limiting way and is supported and limited by a compression spring and a pin, and an external leakage groove 64 which is arranged at the outer side of the joint of the buffering moving ring 61 and the buffering static ring 62, is formed by a gap formed after the assembly of an assembly pillar 211 on the rotating shell 21 and the rotating disc 22, and is arranged above the lubricating oil ring groove 31;

the fixed sleeve 12 is fixedly sleeved on the periphery of the stator shaft 11, a limit convex ring 122 is fixedly arranged at the near-front end part of the outer sleeve surface 121, a bolt limit mounting hole 123 for assembling an interconnected positioning disc is transversely and fixedly arranged on the outer side surface near the tail end, a bottom ring surface 1221 and a middle-lower outer sleeve surface 121 of the limit convex ring 122 are limit fixing surfaces of the bearing inner ring groove ring 311, a limit placing groove 1223 of the buffering static ring 62 and a plurality of compression spring placing holes 1224 which are arranged at the bottom of the groove and elastically support a functional pin of the buffering static ring 62 are concavely arranged on the upper ring surface 1222 of the limit convex ring 122; the main body of the positioning disk 13 is disc-shaped, the main body is covered and installed at the main body tail end of the stator shaft 11 and the fixing sleeve 12, and has the function of assembling, reinforcing and interconnecting the main body of the middle stator assembly 1 and the tail end limit supporting assembly 5, the middle of the main body is provided with a screw rod extending hole, a deviation position is fixedly provided with a maintenance door 131, the inner side of the main body is fixedly provided with a propping limit convex ring 132 corresponding to an inner ring groove ring 311 on the fixing sleeve 12, a plurality of bolt assembling holes 133 corresponding to the bolt limit installing holes 123 on the fixing sleeve 12 are transversely and fixedly arranged on the propping limit convex ring 132 according to requirements, a plurality of lubricating oil injecting holes 134 are fixedly arranged on the corresponding position with the lubricating oil ring groove 31 according to requirements, and a plurality of support legs of the reinforced frame 58 rigidly connected with the edge of the spring box 54 are fixedly arranged on the position close to the edge of the outer surface of the disc;

the main body of the rotating shell 21 is in a ring shape, the top edge of the main surface of the main body is provided with a plurality of convex assembling pillars 211 provided with assembling holes at intervals as required, the inner ring surface of the main body is provided with a limiting snap ring A212 for limiting the outer ring groove ring 312 and the oil seal 34, and the bottom surface of the main body is provided with a plurality of bolt mounting holes 213 for limiting and mounting the leakage-proof blank cap 33 as required;

the main body of the rotating disk 22 is in a disk shape with the periphery matched with the periphery of the rotating shell 21, is assembled and connected with an assembly pillar 211 on the rotating shell 21 through a fixing bolt 221, and is arranged on the front end surface of the rotating shell 21, a limit clamp convex 222 is fixedly arranged on the inner side ring surface of the main body, one side of the limit clamp convex 222 is provided with the buffer moving ring 61, the other side of the main body is provided with an anti-rotating pin 63 with the end part being level with the inner side surface of the buffer moving ring 61 and the function of limiting the buffer moving ring 61, a limit groove 223 for sleeving and clamping and limiting the edge of the front end driven connecting component 4 and an outer convex driven limit clamp pin 224 embedded on the convex ring at the inner side of the limit groove 223 are fixedly arranged on the front end surface of the main surface close to the inner side;

under the assembly state during operation, the middle stator assembly 1 and the tail end limit support assembly 5 are assembled and interconnected from front to back by the positioning disc 13 to form a rigid interconnection body with adjustable top holding force and stable limit support, the peripheral rotating assembly 2 and the front end driven connecting member 4 are mutually inserted and connected with each other through the pin extending limit hole 44 on the front end driven connecting member 4 and the convex driven limit bayonet 224 on the rotating disc 22 to transmit the rotating kinetic energy, the peripheral rotating assembly 2 synchronously rotates around the middle stator assembly 1 under the supporting and matching of the lubricating bearing assembly 3, a relative centrifugal force depending on the rotating speed is generated at the joint of the middle stator assembly 1 and the peripheral rotating assembly 2, a corresponding suction force is generated between the peripheral rotating assembly 2 and the front end driven connecting member 4, when the rotating speed is large enough, air containing dust or dirt around the rod end is sucked into the joint of the middle stator assembly 1 and the peripheral rotating assembly 2 and is extruded into the lubricating oil ring groove 31, the air passes through the outer leakage groove 64 specially arranged above the groove surface to the outer groove surface, no oil leakage occurs, the oil leakage is extruded into the oil groove 31, the oil groove, the continuous operation of the bearing is ensured, and the working life of the ball bearing is also ensured, and the ball bearing is not broken, and the working machine is ensured.

Claims (1)

1. The utility model provides a rational in infrastructure type rod end driven bearing device, the main part includes middle stator module (1), peripheral rotating assembly (2), lubricated bearing assembly (3), front end driven connecting elements (4) and tail end spacing supporting component (5), its characterized in that still increases and is provided with the buffering and hinders subassembly (6) of leaking, wherein:

the middle stator component (1) mainly comprises a stator shaft (11), a fixed sleeve (12) arranged on the periphery of the stator shaft (11), and a positioning disc (13) arranged at the tail ends of the stator shaft (11) and the fixed sleeve (12);

the peripheral rotating assembly (2) mainly comprises a rotating shell (21) and a rotating disc (22);

the lubricating bearing assembly (3) mainly comprises a lubricating oil ring groove (31) formed by combining an inner ring groove ring (311) fixedly arranged on a fixed sleeve (12) in the middle stator assembly (1) and an outer ring groove ring (312) correspondingly fixedly arranged on a rotating shell (21) in the peripheral rotating assembly (2), a ball bearing (32) movably arranged in the lubricating oil ring groove (31), a leakage-proof close cover (33) arranged at the bottom end of the lubricating oil ring groove (31) and an oil seal (34) arranged above the groove surface;

the front end driven connecting component (4) is in a stepped cylindrical shape and comprises a bottom seat ring (41) and an upper rod end connecting sleeve (42), a limiting concave ring (43) is fixedly arranged on the peripheral bottom ring surface of the bottom seat ring (41), a plurality of pin extending limiting holes (44) are fixedly arranged on the ring surface of the limiting concave ring (43) according to needs, and a limiting snap ring B (45) is formed by the outer ring edge of the limiting concave ring (43);

the tail end limiting support assembly (5) has the functions of pulling and reinforcing the middle stator assembly (1), adjusting and controlling the integral jacking force and improving the integral stability, and mainly comprises a threaded connection sleeve (51) arranged in a stator shaft (11), a jacking rod (52) with one end fixedly arranged in the stator shaft (11) and the other end screwed in the inner side end of the internal threaded connection sleeve (51), a thrust box (53) fixedly arranged on the outer surface of the positioning disc (13), a spring box (54) fixedly arranged on the outer surface of the thrust box (53), and a compression spring (55) arranged in a cavity of the spring box (54), wherein a main body extends in the spring box (54), one end of the main body penetrates through the positioning disc (13) and the thrust box (53) and then is screwed in the outer side end of the internal threaded connection sleeve (51), a screw rod nut (57) which is matched and engaged with the internal thread of a cylinder opening of the screw rod (56) is fixedly arranged in the main body, the outer front end part of the screw rod nut (57) is fixedly arranged in the middle of the spring box (54), the screw rod nut is fixedly arranged on the outer side of the cylinder opening of the spring box (54), and a supporting leg is fixedly arranged on the back side of the positioning frame (58) along the edge of the positioning disc (13);

the buffer leakage-proof component (6) mainly comprises a buffer moving ring (61) arranged at the lower corner of the inner ring surface of the rotating disc (22), a plurality of anti-rotation pins (63) which are transversely and fixedly arranged on the inner ring surface near the buffer moving ring (61), the end surface of each anti-rotation pin is flush with the inner ring surface of the buffer moving ring (61), and the anti-rotation pins have the functions of blocking and limiting the displacement of the buffer moving ring (61), a buffer static ring (62) which is embedded on the front end surface of the fixed sleeve (12) at the upper side in a limiting way and is supported and limited by a compression spring and a pin, and an outer leakage groove (64) which is arranged outside the joint of the buffer moving ring (61) and the buffer static ring (62), consists of a gap formed after the assembly of an assembly support pillar (211) on the rotating shell (21) and the rotating disc (22), and is arranged above a lubricating oil ring groove (31);

the fixed sleeve (12) is fixedly sleeved on the periphery of the stator shaft (11), a limiting convex ring (122) is fixedly arranged at the front end part of an outer sleeve surface (121) of the fixed sleeve, a bolt limiting mounting hole (123) for assembling an interconnected positioning disc is transversely and fixedly arranged on the outer side surface close to the tail end of the fixed sleeve, a bottom ring surface (1221) and a middle-lower outer sleeve surface (121) of the limiting convex ring (122) are limiting fixing surfaces of a bearing inner ring groove ring (311), a limiting placement groove (1223) of a buffering static ring (62) is concavely arranged on an upper ring surface (1222) of the limiting convex ring (122), and a plurality of compression spring placement holes (1224) with functional pins for elastically supporting the buffering static ring (62) are arranged at the bottom of the groove;

the positioning disc (13) is disc-shaped, the main body is covered and arranged at the tail ends of the stator shaft (11) and the fixing sleeve (12), and has the functions of assembling, reinforcing and interconnecting the main body of the middle stator assembly (1) and the tail end limit supporting assembly (5), the middle of the main body is provided with a screw rod extending hole, a maintenance door (131) is fixedly arranged at a deviated position, a jacking limit convex ring (132) is fixedly arranged at the inner side corresponding to an inner ring groove ring (311) on the fixing sleeve (12), a plurality of bolt assembling holes (133) corresponding to the bolt limit mounting holes (123) on the fixing sleeve (12) are transversely and fixedly arranged on the jacking limit convex ring (132) according to requirements, a plurality of lubricating oil injection holes (134) are fixedly arranged at the position corresponding to a lubricating oil ring groove (31) according to requirements, and a plurality of support legs of the reinforced frame (58) rigidly connected with the edge of the spring box (54) are fixedly arranged at the position close to the outer surface disc edge;

the main body of the rotating shell (21) is in a circular ring shape, the top edge of the main surface of the main body is provided with a plurality of convex assembling pillars (211) provided with assembling holes at intervals as required, the inner ring surface of the main body is provided with a limiting clamp ring A (212) for limiting the outer ring groove ring (312) and the oil seal (34), and the bottom surface of the main body is provided with a plurality of bolt mounting holes (213) for limiting and mounting the leakage-proof cover (33) as required;

the main body of the rotating disk (22) is in a disk shape with the periphery matched with the periphery of the rotating shell (21), the main body is assembled and connected with an assembly support column (211) on the rotating shell (21) through a fixing bolt (221) and is arranged on the front end face of the rotating shell (21), a limit clamping protrusion (222) is fixedly arranged on the inner side ring face of the main body, one side of the limit clamping protrusion (222) is provided with the buffer moving ring (61), the other side of the main body is provided with an anti-rotation pin (63) with the end part level with the inner side face of the buffer moving ring (61) and the function of limiting the buffer moving ring (61), a limit groove (223) for sleeving and clamping and limiting the edge of the front end driven connecting component (4) is fixedly arranged on the front end face close to the inner side of the main face of the main body, and an outer convex driven limit clamping pin (224) embedded on the inner side convex ring of the limit groove (223);

under the assembly state during working, the middle stator component (1) and the tail end limit support component (5) are assembled and interconnected front and back by a positioning disc (13) to form a rigid interconnection body with adjustable jacking force and stable limit support, the peripheral rotating component (2) and the front end driven connecting component (4) are mutually inserted and connected with each other through a pin extending limiting hole (44) on the front end driven connecting component (4) and an outer convex driven limiting bayonet lock (224) on the rotating disc (22) and transmit the rotating kinetic energy to drive the peripheral rotating component (2) to synchronously rotate around the middle stator component (1) under the supporting and matching of the lubricating bearing component (3), and a related centrifugal force depending on the rotation speed is generated at the junction of the middle stator assembly (1) and the peripheral rotating assembly (2), simultaneously generates corresponding suction between the peripheral rotating component (2) and the front end driven connecting component (4), when the rotating speed is high enough, the air containing dust or dirt around the rod end is sucked and guided to the joint of the middle stator component (1) and the peripheral rotating component (2) and is extruded to enter the upper part of the lubricating oil ring groove (31), under the action of centrifugal force, the oil seal passes through an external leakage groove (64) specially arranged above the groove surface to be leaked outwards, the situation that the oil seal (34) is broken and enters a lubricating oil ring groove (31) is avoided, thereby ensure the safe operation of ball bearing in the oil groove, also ensure the unimpeded operation of the body of rod and the stability and the continuous working life of construction machinery.

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