CN210318393U

CN210318393U - Driving shaft and belt wheel fixing structure

Info

Publication number: CN210318393U
Application number: CN201921089905.5U
Authority: CN
Inventors: 杨雨樵; 王春晖; 陈代; 季松林
Original assignee: Jiangsu Piaoma Intelligent Equipment Co ltd
Current assignee: Jiangsu Piaoma Intelligent Equipment Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-14
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to a line machine technical field that moves especially relates to a drive shaft and band pulley fixed knot construct, including band pulley subassembly, the cover subassembly and drive shaft expand, the activity of the cover subassembly that expands is pegged graft at the inside middle part of band pulley subassembly, the drive shaft activity is pegged graft at the inside middle part of the cover subassembly that expands, the cover subassembly that expands is including outer loop and inner ring, the inner ring activity is cup jointed in the inside of outer loop, the activity of outer loop is pegged graft at the inside middle part of band pulley subassembly. The utility model discloses an use and no longer process the keyway behind the cover subassembly that expands, can improve the intensity of band pulley and drive shaft, reduce the stress concentration source, can bear variable load, variable load and certain axial load, fatigue strength improves, and is not high to processing and cooperation precision requirement in drive shaft and hole, and the manufacturing of being convenient for, it is good with the adjustability to cut interchangeability, and the centering is good, easily installs and removes, and the use is maintained conveniently, has overload protection's function, extensive applicability, and simple structure, convenient to use, low cost.

Description

Driving shaft and belt wheel fixing structure

Technical Field

The utility model relates to a line machine technical field especially relates to a drive shaft and band pulley fixed knot construct.

Background

At present, the connection between the belt wheel and the shaft is connected by key, under the condition of large load, the connection between the common key of the key and the belt wheel can not well bear variable load and impact load, and the operation requirement can not be met for the large load.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a drive shaft and band pulley fixed knot construct possesses the advantage that the cover is connected that expands, has solved under the load condition of great load, and the key that key and band pulley are ordinary can not be fine bears variable load and impact load with the connection of band pulley, can not satisfy the problem of operation requirement to great load.

(II) technical scheme

In order to realize the technical problem, the utility model provides such drive shaft and band pulley fixed knot construct, including band pulley subassembly, the cover subassembly and the drive shaft that expand, the activity of the cover subassembly that expands is pegged graft at the inside middle part of band pulley subassembly, the drive shaft activity is pegged graft at the inside middle part of the cover subassembly that expands, the cover subassembly that expands is including outer loop and inner ring, the inner ring activity is cup jointed in the inside of outer loop, the activity of outer loop is pegged graft at the inside middle part of band pulley subassembly.

Furthermore, a threaded hole is formed in the side face of the inner ring in a penetrating mode, and a screw is inserted into the inner thread of the threaded hole.

Furthermore, a second shaft groove penetrating through the middle part of the inner ring is formed, and the driving shaft is movably inserted into the second shaft groove.

Further, the belt wheel assembly comprises a belt wheel, and wheel grooves are formed in two sides of the belt wheel.

Furthermore, a first shaft groove and a clamping groove are respectively formed in the middle of the interior of the belt wheel from left to right, the outer ring is movably inserted into the clamping groove, and the inner diameters of the first shaft groove and the second shaft groove are equal.

Further, the length of the driving shaft is 4924mm, the diameter of the right end of the driving shaft is 160mm, and the diameter of the belt wheel is 499.4 mm.

(III) advantageous effects

The utility model provides a drive shaft and band pulley fixed knot construct possesses following beneficial effect:

1. this drive shaft and band pulley fixed knot construct, through the setting of the cover subassembly that expands, no longer process the keyway behind the cover subassembly that expands of use, can improve the intensity of band pulley and drive shaft, reduce the stress concentration source, can bear variable load, variable load and certain axial load, fatigue strength improves, it is not high to the processing in drive shaft and hole and the cooperation precision requirement, be convenient for manufacturing, it is good to cut interchangeability and adjustability, the centering is good, easily install and remove, the use is maintained conveniently, the function that has overload protection, wide applicability, and simple structure, high durability and convenient use, low cost.

2. According to the fixing structure of the driving shaft and the belt wheel, the expansion sleeve assembly in a loose state is assembled with the belt wheel and the driving shaft through the arrangement of the expansion sleeve assembly, a screw on the expansion sleeve assembly is screwed, an inner ring and an outer ring on the expansion sleeve assembly are expanded tightly, and huge holding force is generated between the inner ring and the driving shaft and between the outer ring and the belt wheel so as to realize keyless connection of a machine part and a shaft.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the expansion sleeve assembly of the present invention;

fig. 3 is a schematic view of the structure of the belt wheel of the present invention.

In the figure: 1. a pulley assembly; 101. a pulley; 102. a wheel groove; 103. a card slot; 104. a first shaft groove; 2. an expansion sleeve assembly; 201. an outer ring; 202. an inner ring; 203. a threaded hole; 204. a screw; 205. a second shaft groove; 3. a drive shaft.

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, a driving shaft and pulley fixing structure includes a pulley assembly 1, an expansion sleeve assembly 2 and a driving shaft 3, the expansion sleeve assembly 2 is movably inserted in the middle of the inside of the pulley assembly 1, the driving shaft 3 is movably inserted in the middle of the inside of the expansion sleeve assembly 2, the expansion sleeve assembly 2 includes an outer ring 201 and an inner ring 202, the inner ring 202 is movably sleeved inside the outer ring 201, the outer ring 201 is movably inserted in the middle of the inside of the pulley assembly 1, a through threaded hole 203 is formed in a side surface of the inner ring 202, a screw 204 is inserted in an internal thread of the threaded hole 203, a through second axial slot 205 is formed in the middle of the inner ring 202, and the driving shaft 3 is movably inserted in the second axial slot 205.

The belt pulley assembly 1 comprises a belt pulley 101, pulley grooves 102 are formed in two sides of the belt pulley 101, a first shaft groove 104 and a clamping groove 103 are formed in the middle of the inside of the belt pulley 101 from left to right, an outer ring 201 is movably inserted into the clamping groove 103, the inner diameters of the first shaft groove 104 and the second shaft groove 205 are equal, the length of a driving shaft 3 is 4924mm, the diameter of the right end of the driving shaft 3 is 160mm, and the diameter of the belt pulley 101 is 499.4 mm.

In conclusion, according to the fixing structure for the driving shaft and the belt wheel, the key groove is not machined after the expansion sleeve assembly is used through the arrangement of the expansion sleeve assembly 2, so that the strength of the belt wheel 101 and the driving shaft 3 can be improved, stress concentration sources are reduced, variable loads and certain axial loads can be borne, the fatigue resistance is improved, the requirements on machining and matching precision of the driving shaft 3 and a hole are not high, the fixing structure is convenient to machine and manufacture, good in interchangeability and adjustability, good in centering, easy to assemble and disassemble, convenient to use and maintain, wide in applicability, simple in structure, convenient to use and low in cost, and has an overload protection function.

According to the fixing structure of the driving shaft and the belt wheel, the expansion sleeve component 2, the belt wheel 101 and the driving shaft 3 are assembled together in a loose state through the arrangement of the expansion sleeve component 2, a screw 204 on the expansion sleeve component 2 is screwed, an inner ring 202 and an outer ring 201 on the expansion sleeve component 2 are expanded tightly, and a huge holding force is generated between the inner ring 202 and the driving shaft 3 and between the outer ring 201 and the belt wheel 101 so as to realize keyless connection of a machine element and a shaft.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 a drive shaft and band pulley fixed knot construct, includes band pulley subassembly (1), bloated cover subassembly (2) and drive shaft (3), its characterized in that: the belt wheel assembly is characterized in that the expansion sleeve assembly (2) is movably inserted in the middle of the interior of the belt wheel assembly (1), the driving shaft (3) is movably inserted in the middle of the interior of the expansion sleeve assembly (2), the expansion sleeve assembly (2) comprises an outer ring (201) and an inner ring (202), the inner ring (202) is movably sleeved in the outer ring (201), and the outer ring (201) is movably inserted in the middle of the interior of the belt wheel assembly (1).

2. A drive shaft and pulley fixing structure according to claim 1, wherein: the side surface of the inner ring (202) is provided with a through threaded hole (203), and the internal thread of the threaded hole (203) is inserted with a screw (204).

3. A drive shaft and pulley fixing structure according to claim 1, wherein: the middle part of the inner ring (202) is provided with a through second shaft groove (205), and the driving shaft (3) is movably inserted in the second shaft groove (205).

4. A drive shaft and pulley fixing structure according to claim 1, wherein: the belt wheel assembly (1) comprises a belt wheel (101), and two sides of the belt wheel (101) are provided with wheel grooves (102).

5. A drive shaft and pulley fixing structure according to claim 4, wherein: the middle part of the interior of the belt wheel (101) is respectively provided with a first shaft groove (104) and a clamping groove (103) from left to right, the outer ring (201) is movably inserted into the clamping groove (103), and the inner diameters of the first shaft groove (104) and the second shaft groove (205) are equal.

6. A drive shaft and pulley fixing structure according to claim 1, wherein: the length of drive shaft (3) is 4924mm, the diameter of drive shaft (3) right-hand member is 160mm, the diameter of band pulley (101) is 499.4 mm.