CN212509229U

CN212509229U - Engineering machinery bearing bush

Info

Publication number: CN212509229U
Application number: CN202020487401.5U
Authority: CN
Inventors: 曹国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-02-09
Anticipated expiration: 2030-04-07

Abstract

The utility model discloses an engineering machine tool axle bush relates to engineering machine tool axle bush technical field, including upper bearing bush and lower bearing bush, the outside of upper bearing bush is provided with the fixed block, the inboard of fixed block is provided with the screw hole, the outside of lower bearing bush is provided with the connecting block, the inboard of connecting block is provided with the counter bore, the inboard of counter bore is pegged graft and is had fastening bolt, fastening bolt's one end screw in threaded hole is inside, the side of upper bearing bush is provided with the location lug, the inboard setting in side of lower bearing bush is provided with the location shrinkage pool. The utility model has the advantages that: can lead just and fix a position upper bearing shell and lower axle bush, guarantee that upper bearing shell and lower axle bush can be in same axle center, make it obtain higher precision when the assembly, improve assembly quality, the rubber ring can form a sealed space at the middle part of upper bearing shell and lower axle bush, avoids the dust to get into the inside of axle bush from the both ends of axle bush, avoids the result of use of dust influence axle bush.

Description

Engineering machinery bearing bush

Technical Field

The utility model relates to an engineering machine tool axle bush technical field specifically is an engineering machine tool axle bush.

Background

The bearing bush is the part of the sliding bearing contacted with the shaft neck, is in the shape of a tile-shaped semi-cylindrical surface, is very smooth and is generally made of wear-resistant materials such as bronze, antifriction alloy and the like. When the existing bearing bushes are spliced, dislocation of a certain degree is easy to occur, so that after the bearing bushes are assembled, the two semi-cylindrical bearing bushes are not in the same axis, the use precision is influenced, friction high temperature is generated between the bearing bushes and the shaft necks, the bearing bushes are damaged, and dust easily enters gaps between the bearing bushes and the shaft necks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engineering machine tool axle bush to solve the axle bush when splicing, appear the dislocation of certain degree easily, lead to the axle bush after the assembly is accomplished, two semicylinder axle bushes are not in same axle center, influence use precision and lead to producing the friction high temperature between axle bush and the axle journal, lead to the damage of axle bush, and the dust gets into the problem in the clearance between axle bush and the axle journal easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an engineering machinery axle bush, includes upper shaft bush and lower bearing bush, the outside of upper shaft bush is provided with the fixed block, the inboard of fixed block is provided with the screw hole, the outside of lower bearing bush is provided with the connecting block, the inboard of connecting block is provided with the counter bore, the inboard of counter bore is pegged graft and is had fastening bolt, fastening bolt's one end screw in screw hole is inside, the side of upper shaft bush is provided with the location lug, the inboard setting in side of lower bearing bush is provided with the location shrinkage pool.

Preferably, the positioning convex block is inserted into the positioning concave hole, the positioning convex block and the positioning concave hole are in clearance fit, and the unilateral clearance between the positioning convex block and the positioning concave hole is not more than 0.02 mm.

Preferably, the side surface of the upper bearing bush and the side surface of the lower bearing bush are arranged in parallel, and the outer sides of the upper bearing bush and the lower bearing bush are in contact connection.

Preferably, the inside of upper bearing shell is provided with first seal groove, the inside of lower bearing shell is provided with the second seal groove.

Preferably, the first sealing groove and the second sealing groove are symmetrically arranged, and rubber rings are arranged in the first sealing groove and the second sealing groove.

Preferably, the upper bearing bush and the lower bearing bush are made of nylon materials, the upper bearing bush and the fixing block are of an integrally formed structure, and the lower bearing bush and the connecting block are of an integrally formed structure.

Compared with the prior art, the beneficial effects of the utility model are that: the engineering machinery bearing bush:

1. through set up location lug and location shrinkage pool on upper bearing shell and lower bearing shell, can insert in the location shrinkage pool through the location lug when the assembly, both can lead just and fix a position upper bearing shell and lower bearing shell, guarantee upper bearing shell and lower bearing shell and can be in same axle center for when assembling with the axle journal, guarantee that the axle journal is unanimous with the distance of lower bearing shell on power, improve assembly quality.

2. The leakproofness of axle bush can be guaranteed to the rubber ring that sets up, and the rubber ring can form a sealed space at the middle part of last axle bush and lower axle bush, avoids the dust to get into the inside of axle bush from the both ends of axle bush, avoids the dust to influence the result of use of axle bush.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the upper bearing shell of the present invention;

fig. 3 is the structural schematic diagram of the lower bearing bush of the present invention.

In the figure: 10. an upper bearing bush; 11. a lower bearing bush; 13. a fixed block; 14. a threaded hole; 15. connecting blocks; 16. a counter bore; 17. fastening a bolt; 18. positioning the bump; 19. positioning concave holes; 20. a first seal groove; 21. a rubber ring; 22. a second seal groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an engineering machinery bearing bush comprises an upper bearing bush 10 and a lower bearing bush 11, wherein the side surface of the upper bearing bush 10 and the side surface of the lower bearing bush 11 are arranged in parallel, the outer sides of the upper bearing bush 10 and the lower bearing bush 11 are connected in a contact manner, the upper bearing bush 10 and the lower bearing bush 11 are all tile-shaped semi-cylindrical surfaces, a hollow cylindrical structure is formed by splicing the two cylindrical surfaces, a fixed block 13 is arranged on the outer side of the upper bearing bush 10, a threaded hole 14 is formed in the inner side of the fixed block 13, the fixed block 13 is provided with two blocks, the bisector of the bearing bush 10 above the fixed block 13 is symmetrically arranged by taking the symmetry axis, a connecting block 15 is arranged on the outer side of the lower bearing bush 11, the connecting block 15 is symmetrically arranged by taking the bisector of the lower bearing bush 11 below the connecting block 15, the upper bearing bush 10 and the lower bearing bush 11 are both made, the strength of the integral forming of the upper bearing bush 10 and the fixed block 13 is high, the stability is ensured, the lower bearing bush 11 and the connecting block 15 are of an integral forming structure, the strength of the integral forming of the lower bearing bush 11 and the connecting block 15 is high, the strength of the connection of the upper bearing bush 10 and the lower bearing bush 11 is ensured, the inner side of the connecting block 15 is provided with a counter bore 16, the position of the counter bore 16 is concentric with the threaded hole 14, the inner side of the counter bore 16 is inserted with a fastening bolt 17, one end of the fastening bolt 17 is screwed into the threaded hole 14, the upper bearing bush 10 and the lower bearing bush 11 can be installed together through the limitation of the fastening bolt 17, the side surface of the upper bearing bush 10 is provided with a positioning lug 18, the inner side surface of the lower bearing bush 11 is provided with a positioning concave hole 19, the positioning lug 18 is inserted into the positioning concave hole 19, the positioning lug 18, when the upper bearing shell 10 and the lower bearing shell 11 are spliced with each other, the positioning convex block 18 is inserted into the positioning concave hole 19, so that the axes of the upper bearing shell 10 and the lower bearing shell 11 can be overlapped as much as possible, the assembly precision is improved, and the error phenomenon caused by the assembly error between the upper bearing shell 10 and the lower bearing shell 11 is avoided, the first sealing groove 20 is arranged in the upper bearing shell 10, the second sealing groove 22 is arranged in the lower bearing shell 11, the first sealing groove 20 and the second sealing groove 22 are symmetrically arranged, the first sealing groove 20 and the second sealing groove 22 which are symmetrically arranged can form a circular annular groove, the rubber rings 21 are arranged in the first sealing groove 20 and the second sealing groove 22, and a single rubber ring 21 can be embedded into the first sealing groove 20 and the second sealing groove 22 which are symmetrically arranged, when the upper bearing shell 10 and the lower bearing shell 11 are assembled with a journal, the journal belongs to the prior art, no longer describe here any more, upper bearing shell 10 and lower bearing shell 11 can cup joint outside the axle journal, can seal the clearance between upper bearing shell 10 and lower bearing shell 11 and the axle journal through rubber ring 21, and rubber ring 21 can form a sealed space in the middle part of upper bearing shell 10 and lower bearing shell 11, avoids the dust to get into the inside of upper bearing shell 10 and lower bearing shell 11 from both ends, avoids the dust to influence the result of use of upper bearing shell 10 and lower bearing shell 11.

The utility model discloses when concrete implementation: when assembling, firstly, the positioning lug 18 is aligned with the positioning concave hole 19, the upper bearing shell 10 and the lower bearing shell 11 are close to each other, the upper bearing shell 10 and the lower bearing shell 11 are close to each other, the positioning convex block 18 is inserted into the positioning concave hole 19, the axes of the upper bearing bush 10 and the lower bearing bush 11 can be superposed as much as possible, the assembly precision is improved, after the fastening bolt 17 is inserted through the counter bore 16, the fastening bolt 17 is screwed into the threaded bore 14, so that the upper bearing shell 10 and the lower bearing shell 11 can be assembled together, and then the rubber ring 21 is clamped in the first sealing groove 20 and the second sealing groove 22, so that the inner diameter of the rubber ring 21 is smaller than the inner diameters of the upper bearing shell 10 and the lower bearing shell 11, after the upper bearing shell 10 and the lower bearing shell 11 are assembled, the rubber ring 21 can form a sealed space in the middle of the upper bearing shell 10 and the lower bearing shell 11, so as to prevent dust from entering the inside of the upper bearing shell 10 and the lower bearing shell 11 from both ends.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an engineering machine tool axle bush, includes upper bearing shell (10) and lower bearing shell (11), its characterized in that: the outside of going up axle bush (10) is provided with fixed block (13), the inboard of fixed block (13) is provided with screw hole (14), the outside of axle bush (11) is provided with connecting block (15) down, the inboard of connecting block (15) is provided with counter bore (16), it has fastening bolt (17) to peg graft in the inboard of counter bore (16), inside the one end screw in screw hole (14) of fastening bolt (17), the side of going up axle bush (10) is provided with location lug (18), the inboard setting in side of axle bush (11) is provided with location shrinkage pool (19) down.

2. An engineering machinery bearing shell according to claim 1, wherein: inside location shrinkage pool (19) was inserted in location lug (18), clearance fit between location lug (18) and the location shrinkage pool (19), the unilateral clearance between location lug (18) and the location shrinkage pool (19) is not more than 0.02 millimeter.

3. An engineering machinery bearing shell according to claim 1, wherein: the side face of the upper bearing bush (10) and the side face of the lower bearing bush (11) are arranged in parallel, and the outer sides of the upper bearing bush (10) and the lower bearing bush (11) are connected in a contact mode.

4. An engineering machinery bearing shell according to claim 1, wherein: a first sealing groove (20) is formed in the upper bearing bush (10), and a second sealing groove (22) is formed in the lower bearing bush (11).

5. An engineering machinery bearing shell according to claim 4, wherein: the first sealing groove (20) and the second sealing groove (22) are symmetrically arranged, and rubber rings (21) are arranged in the first sealing groove (20) and the second sealing groove (22).

6. An engineering machinery bearing shell according to claim 1, wherein: the upper bearing bush (10) and the lower bearing bush (11) are made of nylon materials, the upper bearing bush (10) and the fixing block (13) are of an integrally formed structure, and the lower bearing bush (11) and the connecting block (15) are of an integrally formed structure.