CN202065370U

CN202065370U - Roller chain coupling

Info

Publication number: CN202065370U
Application number: CN2011201991408U
Authority: CN
Inventors: 李正峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-05
Filing date: 2011-06-05
Publication date: 2011-12-07
Anticipated expiration: 2021-06-05

Abstract

The utility model relates to a roller chain coupling, which comprises a half coupling I, a half coupling II and a roller chain. The half coupling II comprises a chain wheel body, a shaft sleeve and a pin; the outer edge of the chain wheel body is a sprocket; a radial pin hole is arranged at the bottom of the sprocket; the shaft sleeve is a step shaft sleeve with a large diameter on one end and a small diameter on the other end; the radial pin hole with the same diameter or taper is also arranged on the shaft sleeve corresponding to the position of the pin hole of the chain wheel body; the chain wheel body is sheathed on a shaft sleeve outer ring with the small diameter; the pin passes through the chain wheel body and the shaft sleeve pin hole; and the chain wheel body is connected with the shaft sleeve through a pin. When the torque during overloading exceeds the bearing capability of the pin, the pin is sheared off so as to break off transmission; therefore, the roller chain coupling and the other important parts of a machine are prevented from being damaged. In the roller chain coupling, an overloading protecting problem is effectively solved and the application range of the roller chain coupling is enlarged; moreover, the roller chain coupling has the advantages of simple structure, high reliability, convenience for mounting and dismounting, etc.

Description

A kind of double roller chain coupling

Technical field

The utility model relates to a kind of double roller chain coupling, belongs to the coupling technical field.

Background technique

Double roller chain coupling is the roller chain that utilizes standard, simultaneously with two sprocket engagement arranged side by side that the number of teeth is identical, reach the purpose that two axles are linked together, it is simple in structure, mounting or dismounting are convenient, compact dimensions, light weight, certain displacement compensation capability is arranged, and is less demanding to installation precision.Be widely used in weaving, the axle of machineries such as lifting transportation, chemical industry is transmission; be suitable for high temperature, humidity and many dirt work condition environment; but double roller chain coupling is owing to lack the overload protection ability; can not be applied to impulsive load or be easy to generate on the machine of overload; because in case overload; can cause sprocket to fracture or closed roller chain fracture, throw away, can cause serious accident such as hurt sb.'s feelings at the situation lower roller chain of high speed rotating.

The model utility content

For overcoming the deficiency that existing double roller chain coupling exists, a kind of double roller chain coupling that the utility model provides can effectively solve overload protection problem in the mechanical transmission course.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of double roller chain coupling comprises half-coupling I, half-coupling II and roller chain, and described half-coupling II comprises sprocket body, axle sleeve and pin; Described sprocket body outer rim is a sprocket, and described sprocket bottom is provided with radially pin-and-hole; Described axle sleeve is the ladder axle sleeve, and an end diameter is big, and an end diameter is little, also is provided with diameter or the identical radially pin-and-hole of tapering on the axle sleeve of described and sprocket body pin-and-hole corresponding position; Described sprocket body is sleeved on the little axle sleeve outer ring of diameter; Described pin penetrates sprocket body and axle sleeve pin-and-hole, and described sprocket body is connected by pin with axle sleeve.

Further, the number of described pin-and-hole is less than or equal to the chain number of teeth.

Further, described pin-and-hole is a taper hole.

Further, described pin is a taper pin.

Further, the big end of described taper pin is provided with tapped hole.

The beneficial effects of the utility model are, the half-coupling II that will link to each other with driven shaft is decomposed into sprocket body and axle sleeve two-part, couple together with pin again, by the pin transmitting torque, moment of torsion when overload has surpassed the bearing capacity of pin, then sell and cut off, thereby transmission is interrupted, protected that other important parts are not damaged on double roller chain coupling and the machine; Pin is arranged at the sprocket bottom, is covered on it by roller chain, and the pin of cutting off is unlikely to fly out, and avoids accident to take place; The big end of taper pin is provided with tapped hole, and being convenient to the end is that the instrument of screw rod removes it.Hence one can see that, and the utility model efficiently solves the overload protection problem, enlarged the double roller chain coupling application area, have simple in structure, reliability is high, be convenient to advantages such as installing/dismounting.Its installation dimension complies with the national standard requirements, and interchangeability is good.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the plan view of the utility model medium chain wheel body;

Fig. 4 is the A-A view of Fig. 3;

Fig. 5 is the schematic representation of taper pin.

The sequence number of marking is described as follows among the figure: 1-half-coupling I, 2-roller chain, 3-half-coupling II, 31-axle sleeve, 32-pin, 33-sprocket body.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

As shown in Figures 1 to 4, a kind of double roller chain coupling comprises half-coupling I1, half-coupling II3 and roller chain 2, and described half-coupling II3 comprises sprocket body 33, axle sleeve 31 and sells 32; Described sprocket body 33 outer rims are sprocket, and described sprocket bottom is provided with radially pin-and-hole; Described axle sleeve 31 is the ladder axle sleeve, and an end diameter is big, and an end diameter is little, and the shaft shoulder of its formation plays the effect of axially locating, also is provided with diameter or the identical radially pin-and-hole of tapering on the axle sleeve 31 of described and sprocket body 33 pin-and-hole corresponding positions; Described sprocket body 33 is sleeved on the little axle sleeve of diameter 31 outer rings; Described pin 32 penetrates sprocket body 33 and axle sleeve 31 pin-and-holes, and sprocket body 33 and axle sleeve 31 are coupled together by pin 32.

According to the theory of the mechanics of materials, the moment of torsion of transmission has surpassed the material shear strength limit at the shearing stress of the shear plane generation of pin, and pin is cut off, and calculates the diameter and the number of pin in view of the above, and the pin-and-hole number of processing should be less than or equal to the chain number of teeth.

Described pin 32 can be a straight pin, also can be taper pin, and for the ease of installation and removal, and the tightness that consider to cooperate, as preferably, the utility model is selected taper pin for use, and the pin-and-hole that is mated is a taper hole.As preferably, as shown in Figure 5, the big end of taper pin is provided with tapped hole, and being convenient to the end is that the instrument of screw rod removes it.

Half-coupling I1 links to each other with driving shaft, and half-coupling II3 links to each other with driven shaft, and driving shaft passes to driven shaft by roller chain 2 with moment of torsion.Half-coupling II3 is by sprocket body 33, axle sleeve 31 and sell 32 and form, and sprocket body 33 is linked to each other by pin 32 with axle sleeve 31, and axle sleeve 31 is along with sprocket body 33 is rotated, and axle sleeve 31 inner rings link to each other with driven shaft, thereby drive the driven shaft rotation, have realized machine run.The situation that occurs overload in working procedure, under the torque limit effect, pin 32 is cut off.Though sprocket body 33 is rotated further, because of pin 32 is cut off, thereby make sprocket body 33 idle running, axle sleeve 31 stops operating, and therefore the driven shaft that links to each other with axle sleeve 31 does not rotate, and avoids occurring causing the situation that important parts damage in double roller chain coupling and the machine because of overload.After fixing a breakdown, changing new pin can turn round again.

The structure of double roller chain coupling and size are all pressed standard GB/T6069-2002 production, the utility model just is decomposed into sprocket body and axle sleeve two-part with half-coupling II, couple together with pin, its installation dimension complies with the national standard requirements fully again, is convenient to the user and selects for use and change.

Obviously, the above is the basic elaboration to a kind of double roller chain coupling.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.

Claims

1. a double roller chain coupling comprises half-coupling I, half-coupling II and roller chain, it is characterized in that: described half-coupling II comprises sprocket body, axle sleeve and pin; Described sprocket body outer rim is a sprocket, and described sprocket bottom is provided with radially pin-and-hole; Described axle sleeve is the ladder axle sleeve, and an end diameter is big, and an end diameter is little, also is provided with diameter or the identical radially pin-and-hole of tapering on the axle sleeve of described and sprocket body pin-and-hole corresponding position; Described sprocket body is sleeved on the little axle sleeve outer ring of diameter; Described pin penetrates sprocket body and axle sleeve pin-and-hole, and described sprocket body is connected by pin with axle sleeve.

2. a kind of double roller chain coupling according to claim 1 is characterized in that: the number of described pin-and-hole is less than or equal to the chain number of teeth.

3. a kind of double roller chain coupling according to claim 1 and 2 is characterized in that: described pin-and-hole is a taper hole.

4. a kind of double roller chain coupling according to claim 1 is characterized in that: described pin is a taper pin.

5. a kind of double roller chain coupling according to claim 4 is characterized in that: the big end of described taper pin is provided with tapped hole.