Double-row ball water pump shaft connecting bearing
Technical Field
The invention relates to the technical field of bearings, in particular to a double-row ball water pump shaft connecting bearing.
Background
The water pump shaft connecting bearing is the core of a mechanical engine and comprises a shaft core, an outer ring, a retainer and a roller; the outer ring is generally fixedly arranged on the water pump shell and does not rotate; one end of the shaft core protrudes out of the outer ring and is connected with the impeller; the other end of the shaft core is connected with a pulley shaft, and the pulley shaft is connected with a pulley to transmit power to the impeller. The existing water pump shaft connecting bearing is generally of a double-row structure, when the borne load is smaller, the structure of double-row balls can meet the requirement, when the stress of a belt wheel end is larger, a cylindrical roller can be adopted at the belt wheel end to increase the load bearing capacity, the impeller end is not changed, the structure of the double-row balls is adopted, so that the belt wheel end is of a row of columns, the double-row structure of a row of balls is adopted, but the price of the cylindrical roller and the processing cost of a roller path are more expensive compared with the steel ball structure, meanwhile, higher processing precision is required, the production and processing cost of enterprises is improved, the popularization and the use of products are not facilitated, the pure double-ball form is adopted, the steel ball at the belt wheel end is larger in bearing capacity, larger in abrasion degree, the service life is influenced, the maintenance and the replacement are not facilitated, and the use cost of the products is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a double-row ball water pump shaft connecting bearing which is simple in structure and easy to process, and can meet the use requirements of high load and conventional load by adopting two modes.
In order to achieve the purpose, the invention provides a double-row ball water pump shaft connecting bearing, which comprises an outer ring and a mandrel, wherein a first track groove and a second track groove are formed between the outer ring and the mandrel, the first track groove is arranged close to the belt wheel end of the mandrel, the second track groove is arranged close to the impeller end, steel balls are arranged in the first track groove and the second track groove in a rolling manner, a positioning frame is arranged between the first track groove and the second track groove on the inner wall of the outer ring, the cross section of the positioning frame is in a T-shaped arrangement, the positioning frame comprises a substrate and a first positioning flange and a second positioning flange which are respectively arranged at two sides of the substrate, the first positioning flange is arranged close to the first track groove, a plurality of positioning grooves are arranged on the first positioning flange at intervals corresponding to the positions of the steel balls, the width of the positioning grooves is larger than the sum of the widths of the two steel balls, the second positioning flange is arranged close to the second track groove, the ball receiving groove is arranged at the middle position of the positioning groove, the outer ring is provided with a ball receiving groove used for placing the steel ball into the first raceway groove, the number of the ball receiving groove is the same as that of the positioning groove, the ball receiving groove is communicated with the first raceway groove, the ball receiving groove is arranged at the middle position of the positioning groove, the two sides of the outer ring are respectively connected with a first holding side frame and a second holding side frame in a clamping mode, the first holding side frame extends into the ball receiving groove to form a positioning protrusion, the two sides of the end portion of the positioning protrusion are formed with arc-shaped grooves, the arc-shaped grooves and the corresponding edges of the positioning grooves form a combination to position the steel ball in the positioning groove, the second holding side frame is provided with holding grooves corresponding to the intervals of the positions of the steel ball, and the holding grooves are combined to form a limit to the steel ball in the positioning groove. The structure is simple, the processing is easy, and simultaneously, the use requirements of high load and conventional load can be met by adopting two forms.
The beneficial effect who so sets up is: through the structure, the structure at the end of the belt wheel is arranged, two types of bearings can be produced by using one production line, only one set of mould is needed, under the condition of common bearing capacity, only one steel ball needs to be accommodated in the positioning groove, under the requirement of high bearing capacity, one steel ball is arranged in the positioning groove through the ball accommodating groove, so that the two steel balls are arranged in the positioning groove, the bearing capacity of the end position of the belt wheel is effectively improved, the ball accommodating groove is preferably set to be 1.6 times the diameter of the steel ball, the steel ball is convenient to arrange, simultaneously, after the steel ball is arranged, the first holding side frame is arranged, the positioning bulge on the first holding side frame can be inserted into the ball accommodating groove, meanwhile, the end part of the positioning bulge is provided with an arc-shaped groove, the two steel balls can be separated and positioned, the condition that the steel balls are mutually interfered is avoided, and simultaneously, the arc-shaped groove can form a combination with the edge of the corresponding positioning groove to position the steel ball, the steel balls are prevented from deviating, the using effect is guaranteed, the mounting mode of the side frames can be kept and fixed in a close-fitting mode, the overall using effect is guaranteed, the holding grooves are formed in the second side frame, the steel balls at the end positions of the impellers can be guaranteed to be distributed uniformly and independently, and the operating stability is guaranteed. By adopting the structure, the production is convenient, and the production and processing efficiency is improved.
As a further arrangement of the invention, the shape of the positioning bulge is matched with the shape of the ball receiving groove.
The beneficial effect who so sets up is: the ball receiving grooves can be better filled, the steel balls are prevented from shaking in the using process, the using effect of the overall structure is guaranteed, the structure is simple, the realization is facilitated, the connecting effect of the first keeping side frame is further guaranteed, and the smooth operation of the overall structure is guaranteed.
As a further arrangement of the invention, the mandrels of the first and second holding side frames are extended to form flanges, and the ends of the flanges are forked to form sealing lips.
The beneficial effect who so sets up is: the flanges are arranged on the first holding side frame and the second holding side frame, so that a dustproof effect can be effectively achieved, the leakage of internal grease is avoided, and the using effect of the whole structure is ensured.
As a further arrangement of the present invention, a positioning step is formed on the outer race at a position of the second holding side frame, and the second holding side frame is disposed to abut against the positioning step.
The beneficial effect who so sets up is: the step is arranged, so that the second holding side frame can be mounted in place, the situation of untight mounting is not easy to occur, the using effect of the holding side frame is guaranteed, and the positioning effect of the steel ball is guaranteed.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic illustration of an explosive structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an outer race pulley end in an embodiment of the present invention;
FIG. 4 is a schematic structural view of an outer ring impeller end in an embodiment of the present invention;
FIG. 5 is a schematic view of the first retaining sideframe in an embodiment of the present invention.
Detailed Description
The embodiment of the double-row ball water pump shaft connecting bearing of the invention is shown in figures 1-2: the steel ball positioning device comprises an outer ring 1 and a mandrel 2, a first rolling groove 21 and a second rolling groove 22 are formed between the outer ring 1 and the mandrel 2, the first rolling groove 21 is close to the belt wheel end of the mandrel 2, the second rolling groove 22 is close to the wheel end, steel balls 6 are arranged in the first rolling groove 21 and the second rolling groove 22 in a rolling manner, a positioning frame 3 is arranged between the first rolling groove 21 and the second rolling groove 22 on the inner wall of the outer ring 1, the cross section of the positioning frame 3 is in a T-shaped arrangement, the positioning frame 3 comprises a substrate and a first positioning flange 31 and a second positioning flange 32 which are respectively arranged on two sides of the substrate, the first positioning flange 31 is close to the first rolling groove 21, a plurality of positioning grooves 311 are arranged on the first positioning flange 31 at intervals corresponding to the positions of the steel balls 6, the width of each positioning groove 311 is larger than the sum of the widths of the two steel balls 6, the second positioning flange 32 is close to the second rolling groove 22, the second positioning flange 32 is provided with a positioning ring groove 321 corresponding to the position of the steel ball 6, the outer ring 1 is provided with a ball receiving groove 11 corresponding to the position of the first raceway groove 21 and used for placing the steel ball 6 into the first raceway groove 21, the number of the ball receiving grooves 11 is the same as that of the positioning grooves 311, the ball receiving groove 11 is communicated with the first raceway groove 21, the ball receiving groove 11 is arranged at the middle position of the positioning grooves 311, the two sides of the outer ring 1 are respectively connected with a first holding side frame 4 and a second holding side frame 5, the first holding side frame 4 extends into the ball receiving groove 11 to form a positioning protrusion 41, the two sides of the end part of the positioning protrusion 41 are formed with arc grooves 411, the arc grooves 411 and the edges of the corresponding positioning grooves 311 are combined to form the positioning of the steel ball 6 in the positioning grooves 311, the second holding side frame 5 is provided with holding grooves 51 corresponding to the positions of the steel ball 6 at intervals, the combination of the retaining groove 51 and the retainer ring groove 321 forms a limit for the steel ball 6 in the retainer ring groove 321. The beneficial effect who so sets up is: through the structure, the structure at the belt wheel end is arranged, two types of bearings can be produced by using one production line, only one set of mold is needed, under the condition of common bearing capacity, only one steel ball 6 needs to be accommodated in the positioning groove 311, under the requirement of high bearing capacity, one steel ball 6 is arranged in the positioning groove 311 through the ball accommodating groove 11, so that two steel balls 6 are arranged in the positioning groove 311, the bearing capacity of the belt wheel end position is effectively improved, the ball accommodating groove 11 is preferably set to be 1.6 times of the diameter of the steel ball 6, so that the steel ball 6 is conveniently arranged, simultaneously, after the steel ball 6 is arranged, the first holding side frame 4 is arranged, the positioning bulge 41 on the first holding side frame 4 is inserted into the ball accommodating groove 11, meanwhile, the end part of the positioning bulge 41 is provided with the arc-shaped groove 411, the two steel balls 6 can be separated and positioned, the condition that the steel balls 6 interfere with each other is avoided, simultaneously, the arc-shaped groove 411 can form a combination with the edge of the corresponding positioning groove 311 to position the positioning groove 6 to position the positioning of the steel ball 6, the steel balls 6 are prevented from deviating, the use effect is guaranteed, the installation mode of the side frames can be fixed in a close-fitting mode, the overall use effect is guaranteed, the second holding side frame 5 is further provided with the holding grooves 51, the steel balls 6 at the end positions of the impellers can be guaranteed to be distributed uniformly and independently, and the operation stability is guaranteed. By adopting the structure, the production is convenient, and the production and processing efficiency is improved.
As a further arrangement of the present invention, the positioning protrusion 41 is shaped to match the shape of the ball receiving groove 11. The beneficial effect who so sets up is: can fill ball receiving groove 11 better, avoid in the use, the steel ball 6 appears rocking, guarantees overall structure's result of use to simple structure does benefit to the realization, and the smooth and easy operation of overall structure is guaranteed to the first linkage effect who keeps side bearer 4 of further assurance.
As a further arrangement of the invention, the first holding side frame 4 and the second holding side frame 5 are extended from the mandrel 2 to form a rib 7, and the end of the rib 7 is bifurcated to form a sealing lip. The beneficial effect who so sets up is: the flanges 7 are arranged on the first holding side frame 4 and the second holding side frame 5, so that a dustproof effect can be effectively achieved, leakage of internal grease is avoided, and the using effect of the whole structure is ensured.
As a further arrangement of the present invention, a positioning step 12 is formed at the position of the second holding side frame 5 on the outer race 1, and the second holding side frame 5 is disposed to abut against the positioning step 12. The beneficial effect who so sets up is: the step is arranged, so that the second holding side frame 5 can be installed in place, the situation of untight installation is not easy to occur, the using effect of the holding side frame is guaranteed, and the positioning effect of the steel ball 6 is guaranteed.
The above example is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.