CN102278382A

CN102278382A - Roller chain coupling

Info

Publication number: CN102278382A
Application number: CN2011101599242A
Authority: CN
Inventors: 李正峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-05
Filing date: 2011-06-05
Publication date: 2011-12-14

Abstract

The invention relates to a roller chain coupling. The roller chain coupling comprises a half coupling I, a half coupling II and a roller chain, wherein the half coupling II comprises a chain wheel body, a shaft sleeve and pins; the periphery of the chain wheel body is provided with sprockets, and the bottoms of the sprockets are provided with radial pin holes; the shaft sleeve is a stepped shaft sleeve, the diameter of one end of the shaft sleeve is larger, the diameter of the other end of the shaft sleeve is small, and the parts, corresponding to the chain wheel body pin holes, on the shaft sleeve are provided with a radial pin holes with same diameter or taper; the chain wheel body is sleeved on the outer ring of the small-diameter shaft sleeve; the pins penetrates into the chain wheel body and the shaft sleeve pin hole, and the chain wheel body is connected with the shaft sleeve by virtue of the pins; when an overload torque exceeds the carrying capacity of the pins, the pins are snipped, thereby interrupting the transmission and protecting the roller chain coupling and other important parts on a machine from being damaged. The roller chain coupling provided by the invention can be used for effectively solving the overload protection problem and expanding the application area of the roller chain coupling and has the advantages of simple structure, high reliability, convenience in installation and disassembly and the like.

Description

A kind of double roller chain coupling

Technical field

The present invention relates to a kind of double roller chain coupling, belong 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.

Summary of the invention

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

The technical solution adopted for the present invention to solve the technical problems 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 invention has the beneficial effects as follows, 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 present invention 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 invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is a plan view of the present invention;

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

Fig. 3 is the plan view of medium chain wheel body of the present invention;

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 the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.

As shown in Figures 1 to 4, a kind of double roller chain coupling comprises half-coupling I 1, half-coupling II 3 and roller chain 2, and described half-coupling II 3 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 present invention selects 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 I 1 links to each other with driving shaft, and half-coupling II 3 links to each other with driven shaft, and driving shaft passes to driven shaft by roller chain 2 with moment of torsion.Half-coupling II 3 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 present invention just is decomposed into sprocket body and axle sleeve two-part with the 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 invention.

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.