CN201705820U

CN201705820U - Expansion sleeve for delivering torque between hole and shaft

Info

Publication number: CN201705820U
Application number: CN2010201574195U
Authority: CN
Inventors: 李学茹
Original assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Current assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Priority date: 2010-04-14
Filing date: 2010-04-14
Publication date: 2011-01-12
Anticipated expiration: 2020-04-14

Abstract

The utility model discloses an expansion sleeve for delivering a torque between a hole and a shaft, comprising an outer ring, an inner ring, a front press ring, a back press ring and a bolt, wherein the front press ring and the back press ring are arranged between the outer ring and the inner ring; inclined planes inclining from the middle end surface to both side end surface are both arranged on the inner circle of the outer ring and the outer circle of the inner ring, and the inclined planes inclining to both sides are in the shape that the outer parts are large and the inner parts are small; the inclined planes on the two sides of the outer ring and the inner ring are respectively pressed on the inclined planes of the front press ring and the back press ring; and the bolt passes through the press rings and then are screwed in a screw hole of the front press ring. The expansion sleeve has the advantages of simple structure and convenient assembly and disassembly. The expansion sleeve also has a large action on equipment maintenance, for example, the damages on key slots, the shaft or the hole all can be rescued in the connection mode that the expansion sleeve is used between the key slots or between the shaft and the hole. The expansion sleeve saves manpower, time and expenses and improves the working efficiency.

Description

The expansion set of transmitting torque between hole and axle

Technical field

The utility model relates to the linkage structure between hole and the axle, particularly be the hole with spool between the expansion set of transmitting torque.

Background technique

In machinery, be unable to do without being connected of hole and axle, this connection is the most frequently used see be that the key connection is connected with interference.

Fig. 1 is the structural representation that is connected with key between hole and the axle of prior art coupling; Fig. 2 is the structural representation that is connected with interference between hole and the axle of prior art coupling.

As shown in Figure 1, key connects need process keyway on axle and hole, the intensity that this just needs to strengthen axle and hole, and that is to say increases axle journal and increases pore wall thickness, satisfies the loss of strength that keyway brings.So, the weight of workpiece can increase a lot, and if the precision of keyway do not guarantee that the damage frequency of key can increase, this will cause a series of economic losses such as changing spare part, shut-down, stopping production.

As shown in Figure 2, the interference connection need be carried out the processing of point-device calculating, precision and the strictness control of heating-up temperature in advance, and magnitude of interference Xiao Yi causes connection unreliable, the excessive plastic deformation that easily causes the attachment portion of magnitude of interference.High-precision processing to junction plane before assembling has increased a large amount of processing costs, and assembly process has increased the input of auxiliary establishing to the strict demand of temperature, and in case the some parts that connect need to change, it just dismantles very trouble.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, provide a kind of and between hole and axle, transmit corresponding moment of torsion, easy accessibility, only need with torque wrench with bolt quantitatively tighten the hole with spool between the expansion set of transmitting torque.

The technological scheme that solves the problems of the technologies described above is: a kind of between hole and axle the expansion set of transmitting torque, described expansion set comprises: outer shroud, interior ring, preceding pressure ring, back pressure ring and bolt; Pressure ring and back pressure ring are arranged between outer shroud and the interior ring before described; Be provided with on the inner ring of described outer shroud and the outer ring of interior ring from the middle part to the inclined-plane of two side ends face tilt, the shape on the inclined-plane that described both sides tilt is outer big, interior little; The inclined-plane of described outer shroud and interior ring both sides is pressed in respectively on the inclined-plane of preceding pressure ring and back pressure ring; Pressure ring is tightened in the screw of preceding pressure ring behind the bolt-through.

The beneficial effects of the utility model are: simple in structure, the easy accessibility of the utility model.

The utility model also has very big effect aspect device maintenance, damage as keyway, and the damage of axle or hole surface all can use the Placement of expansion set to be saved in the centre.

The utility model is with its reliable performance, and that installs and uses is easy, for enterprise saves a large amount of manpowers and time, increases work efficiency, for enterprise saves substantial contribution.

Description of drawings

Fig. 1 is the structural representation that is connected with key between hole and the axle of prior art coupling;

Fig. 2 is the structural representation that is connected with interference between hole and the axle of prior art coupling;

Fig. 3 is the utility model structure sectional view;

Fig. 4 is the structural representation that Fig. 3 is installed in embodiment in the coupling.

" sequence number explanation in the accompanying drawing "

1: outer shroud; 2: interior ring; 3: preceding pressure ring; 4: the back pressure ring; 5: expansion set; 6: driving shaft; 7: driven shaft; 8: flange outer sleeve; 9: cover in the flange; 10: bolt.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 3 is the utility model structure sectional view; Fig. 4 is that Fig. 3 is installed in the structural representation in the coupling.

As shown in Figure 3, the utility model provide a kind of between hole and axle the expansion set 5 of transmitting torque, described expansion set 5 comprises: outer shroud 1, interior ring 2, preceding pressure ring 3, back pressure ring 4 and bolt 10.

Pressure ring 3 and back pressure ring 4 are arranged between outer shroud 1 and the interior ring 2 before described; Be provided with on the outer ring of the inner ring of described outer shroud 1 and interior ring 2 from the middle part to the inclined-plane of two side ends face tilt, the shape on the inclined-plane that described both sides tilt is outer big, interior little; The inclined-plane of described outer shroud 1 and interior ring 2 both sides is pressed in respectively on the inclined-plane of preceding pressure ring 3 and back pressure ring 4.

Described bolt 10 is tightened in the screw of preceding pressure ring 3 after running through back pressure ring 4.

Described bolt 10 also has following mounting structure: be tightened on behind the pressure ring 3 in the screw of back pressure ring 4 before bolt 10 runs through.

Described outer shroud 1 is contained in the hole; Ring 2 is contained on the axle in described.

As shown in Figure 4, coupling comprises: cover 9 in flange outer sleeve 8 and the flange.The outer shroud 1 of expansion set 5 is housed in the cover 9 in the described flange; The interior ring 2 of expansion set 5 is sleeved on driving shaft 6.High-strength bolt 10 is bestowed pretightening force just produce pulling force, by preceding pressure ring 3 and back pressure ring 4 and the component that outer shroud 1 and interior ring 2 inclined-planes are produced, the huge positive pressure that produces between ring and axle, outer shroud and the hole in making.When bearing load, by the frictional force that positive pressure produced of expansion set and parts junction plane, come transmitting torque, axial force and combined load exactly.

The interior ring 2 of paired expansion set 5 is respectively installed with driving shaft 6 and driven shaft 7 in the coupling, and by swivel bolt 10, coupling can link together transmitting torque with driving shaft 6 and driven shaft 7.

Claims

1. an expansion set that is positioned at transmitting torque between hole and the axle is characterized in that described expansion set (5) comprising: outer shroud (1), interior ring (2), preceding pressure ring (3), back pressure ring (4) and bolt (10); Pressure ring (3) and back pressure ring (4) are arranged between outer shroud (1) and the interior ring (2) before described; Be provided with on the outer ring of the inner ring of described outer shroud (1) and interior ring (2) from the middle part to the inclined-plane of two side ends face tilt, the shape on the inclined-plane that described both sides tilt is outer big, interior little; The inclined-plane of described outer shroud (1) and interior ring (2) both sides is pressed in respectively on the inclined-plane of preceding pressure ring (3) and back pressure ring (4); Bolt (10) is tightened in the screw of preceding pressure ring (3) after running through back pressure ring (4).

2. according to the expansion set of transmitting torque between hole and axle described in the claim 1, it is characterized in that described outer shroud (1) is contained in the hole; Ring (2) is contained on the axle in described.