SU1681081A1 - Flexible safety coupling - Google Patents

Flexible safety coupling Download PDF

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Publication number
SU1681081A1
SU1681081A1 SU894683541A SU4683541A SU1681081A1 SU 1681081 A1 SU1681081 A1 SU 1681081A1 SU 894683541 A SU894683541 A SU 894683541A SU 4683541 A SU4683541 A SU 4683541A SU 1681081 A1 SU1681081 A1 SU 1681081A1
Authority
SU
USSR - Soviet Union
Prior art keywords
coupling
bar
groove
elastic
half
Prior art date
Application number
SU894683541A
Other languages
Russian (ru)
Inventor
Юрий Степанович Панчеха
Александр Павлович Андреев
Николай Григорьевич Спирин
Михаил Васильевич Косимовский
Людмила Федоровна Самохвалова
Original Assignee
Ю.С. Панчеха, А.П. Андреев, Н.Г. Спирин, М.В. Касимовский и Л.Ф. Самохвалова
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ю.С. Панчеха, А.П. Андреев, Н.Г. Спирин, М.В. Касимовский и Л.Ф. Самохвалова filed Critical Ю.С. Панчеха, А.П. Андреев, Н.Г. Спирин, М.В. Касимовский и Л.Ф. Самохвалова
Priority to SU894683541A priority Critical patent/SU1681081A1/en
Application granted granted Critical
Publication of SU1681081A1 publication Critical patent/SU1681081A1/en

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Abstract

The invention relates to mechanical engineering and can be used to connect displaced shafts for transmitting different magnitudes of moments during reverse rotation. The purpose of the invention is the expansion of operational capabilities by ensuring the transfer of significant ratios of moments when reversing. The elastic safety coupling consists of concentrically installed A half couplings (P) 1.2, connected by an elastic bar 3, which is installed in the hole 4 П 1 and in the slots 7 on the profiled part 8 П 2. Side walls (С) 9, 10 notches 7 inclined at different angles a, ag. Each end 5, 6 of bar 3 has faces of length I and IK opposite to the angles a and "2 slots respectively, while a ai, a I I. When rotating, the ends 5, b of bar 3 bend and adjoin C 9 or C 10 half-coupling 2 depending on the direction of rotation. The stiffness of the bar 3 when rotating clockwise is higher than when rotating counter-clockwise. In this case, various torque moments are transmitted. When overloaded, the end parts 5, 6 slip in the space between P 1 and 2. A variant of the coupling is provided, in which the shaped part 8 is made in the form of an elastic ring. 2 1 Cf.-ly, 3 Il. sl with s in about 00 about 00 8

Description

The invention relates to mechanical engineering. M can be used to connect displaced shafts for transmitting different magnitudes of moments in reverse rotation.

The purpose of the invention is the expansion of operational capabilities by ensuring the transfer of significant ratios of moments when reversing.

FIG. 1 shows the scheme of the proposed coupling; in fig. 2 - the same section; Fig. 3 is a diagram of an embodiment of the coupling.

The elastic safety coupling includes two concentric coupling halves 1 and 2 connected to each other through a safety element made of an elastic material, for example polyurethane, made in the form of a bar 3. The bar 3 is placed in the through part of the diametral hole 4 of the half-coupling 1 and the ends 5 6 is placed in the slots 7, made on the inner part 8 of the outer coupling half 2. The side walls 9, 10 of each groove 7 are inclined to the axis of the coupling at different angles, respectively, a and O2, each end, for example, 5, with a cantilever portion and greater length is located against a smaller angle b, and a face with a smaller length of And - against a larger angle Oi. Differently sized cantilevers of the faces of the ends 5, 6 of the bar are formed by grooves 11, 12 in the half-coupling 1. According to the variant of the coupling in FIG. 3, the profiled inner part 8 of the half coupling 2 is made in the form of an elastic ring 13 with grooves formed by diametrically opposite protrusions 14, 15, each in contact with side walls 16, 17 with conical parts of screws 18, 19 installed radially in the coupling half 2.

Coupling (Fig. 1, 2) works as follows.

Rotation from coupling half 1 to coupling half 2 transmits bar 3, which rests on wall 9 or wall 10 of groove 7, depending on the direction of rotation of the drive coupling half 1. Bar 3, due to its elasticity, slightly bends in the space between coupling halves 1, 2 and is held by friction against walls 9, 10, the magnitude of the deflection depends on the transmitted torque, i.e. the greater the torque, the greater the deflection of the bar 3, and the elasticity of the material. The amount of deflection of the bar 3 also depends on the length of the arms I, h of its end parts 5, 6, which determine their rigidity. Increasing the angle of inclination of the wall 10 of the groove 7 provides an increase in the deformation of the end portions 5, 8 of the bar 3 when

reduced transmitted torques (when turning clockwise). This is due to the reduction of the forces of friction holding the elastic bar 3 by the wall 10. In turn, the notches 11,12, located opposite the side walls 9 of the grooves 7 with a small angle of inclination a ag, also facilitate the process of deformation of the end parts 5, 6 of the bar 3 and reduce the transmitted torque by increasing the shoulder I of the end parts 5, 6 (I) in the clockwise direction. When rotated in the counterclockwise direction, the rigidity of the end parts 5, b increases sharply; the size of their arms decreases (Ii). The angle a, which also contributes to reducing the deflection of the end portions 5, 6 of the bar 3, since the end portions 5, 6 are pressed against the walls 9, they are not significantly deformed in space. The friction forces holding bar 3 are increased by increasing the normal pressure on the wall 9. As a result, the torque transmitted by the coupling half 1 to the coupling half 2 in the counterclockwise direction is significantly greater than in the clockwise direction. The brand of elastic material of the bar 3, its design parameters and coupling halves 2 (diameters of the inner hole, angles of inclination of the walls 9, 10, as well as the size of the grooves 11, 12 of the coupling half 1), can vary the coupling characteristic in different directions of rotation e wide limits. When the transmitted torque exceeds a predetermined (overload on the half-trunk 2), the ends 5, of the bar 3 are bent so that they slip in the space between the coupling halves 1 and 2 in the directions of rotation both clockwise and counterclockwise when the corresponding nominal torque is exceeded moments. If the load on coupling half 2 decreases, then the operation of the coupling is automatically restored.

Thus, the side walls 9, 10 of the grooves 7, along with the recesses 11, 12 on the coupling half 1, provide different ratios of transmitted torques depending on the direction of rotation of the coupling.

The coupling according to FIG. 3 has wider functional capabilities and provides smooth adjustment and adjustment of the coupling to the nominal transmitted torque.

The rotation from the half coupling 1 to the half coupling 2 is transmitted by means of an elastic bar 3 installed in the opening 4 of the half coupling 1. The elastic ring 13 of the curvilinear profile has the shape shown in FIG. 3. However, by screwing the screws 18,19 into the walls 16,17 of the elastic ring 13 this

the form can be slightly changed in small limits. As a result, it is possible to change the angles a, t by a small amount and increase the value of the transmitted torque in one or in opposite directions of rotation of the coupling halves 1, 2. The presence of adjusting screws 18, 19 installed in the driven half coupling half connected with walls 16, 17 of ring 13, provides a smooth adjustment of the coupling characteristic, which is necessary for fine adjustment of the coupling during manufacture, as well as adjustment or adjustment of the coupling during operation, since the roughness of the inner surface is olumufty 2 varies, the bar material 3 is exposed to relaxation processes over time that alter the elastic characteristics of the bar 3.

The presence of an elastic ring 13 of a curvilinear profile improves the manufacturability of the coupling, since the production of the slots 7 with side walls 9. 10 is rather complicated. Ring 13 can be obtained by stamping from tubular steel 25 or by welding from a tape.

The proposed clutch can be used in the electric drive of the armature of energy devices, where it is necessary that the increased torque be transmitted during the return stroke.

Claims (2)

1. The safety coupling consists of two concentric coupling halves and a connecting link in the form of an elastic bar; so that, in order to expand operational capabilities by increasing the range of magnitudes of the transmitted moments when reversing the rotation, the side walls of each groove are inclined at different angles and koshi clutch and the length of cantilever portion end face of each bar facing the wall of the groove at a larger angle is smaller than the length of cantilever portion faces facing the groove wall with a smaller angle of inclination.
2. The coupling according to claim 1, characterized in that it is provided with adjusting supporting elements mounted in the outer coupling half on either side of the groove in contact with the side walls of the groove, and the inner part of the outer coupling half is made in the form of an elastic equal thickness ring.
FIG. 2
18
sixteen
M
nineteen
SU894683541A 1989-04-25 1989-04-25 Flexible safety coupling SU1681081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU894683541A SU1681081A1 (en) 1989-04-25 1989-04-25 Flexible safety coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU894683541A SU1681081A1 (en) 1989-04-25 1989-04-25 Flexible safety coupling

Publications (1)

Publication Number Publication Date
SU1681081A1 true SU1681081A1 (en) 1991-09-30

Family

ID=21443920

Family Applications (1)

Application Number Title Priority Date Filing Date
SU894683541A SU1681081A1 (en) 1989-04-25 1989-04-25 Flexible safety coupling

Country Status (1)

Country Link
SU (1) SU1681081A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6623365B1 (en) * 1998-05-12 2003-09-23 Volkswagen Ag Transmission element for the transmission of power and/or torques, oscillation damper and method for oscillation damping
WO2015147668A1 (en) * 2014-03-24 2015-10-01 Андрей Андреевич БРЫЗГАЛОВ Hermetically sealed switching connector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР № 616466. кл. F 16 D 7/00, 1976. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6623365B1 (en) * 1998-05-12 2003-09-23 Volkswagen Ag Transmission element for the transmission of power and/or torques, oscillation damper and method for oscillation damping
WO2015147668A1 (en) * 2014-03-24 2015-10-01 Андрей Андреевич БРЫЗГАЛОВ Hermetically sealed switching connector

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