Membrane disc coupler with overload protection function

Abstract

The utility model belongs to the technical field of membrane disc couplings, and discloses a membrane disc coupler with overload protection, which comprises a coupler main body, an overload protection component is arranged on the outer side of the coupler main body, the overload protection component comprises a fixing ring, and elastic telescopic rods are uniformly distributed on the outer side of the fixing ring. The elastic telescopic rod is connected with a centrifugal block, a brake frame matched with the centrifugal block is arranged on the outer side of the centrifugal block, the coupler body comprises an intermediate shaft, shaft sleeves are arranged at the two ends of the intermediate shaft, overload protection is achieved under the action of centrifugal force, and when the rotating speed of the diaphragm disc coupler reaches a certain value, the centrifugal block is driven to rotate. The centrifugal force generated by the centrifugal block can overcome the spring force, so that the centrifugal block moves outwards, friction is formed between the centrifugal block and the brake frame, the rotating speed is reduced, the response speed of overload protection is related to the rotating speed, the higher the rotating speed is, the faster the response is, external control signals or sensors are not needed, the structure is relatively simple, and the reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of membrane coupling, specifically a kind of membrane coupling with overload protection. BACKGROUND

[0002] Membrane coupling is a kind of high-performance metal element flexible coupling, mainly by intermediate shaft, diaphragm, shaft sleeve is formed, diaphragm is the core elastic element of membrane coupling, usually by the spring sheet of very thin thickness is made, shape has hexagonal, octagonal etc., there are several bolt holes on the circumference of diaphragm, for connecting shaft sleeve, diaphragm coupling relies on the elastic deformation of diaphragm to compensate the relative displacement of the two shafts, when there is axial, radial and angular offset between the two shafts, diaphragm will be deformed accordingly, such as bending, twisting, so that the two shafts have certain relative movement without affecting torque transmission.

[0003] In prior art, when the speed of equipment exceeds normal range to reach the set overload speed, load torque increases, and the equipment is damaged due to overload caused by high speed, and safety accidents may be caused by overload.

[0004] Therefore, a kind of membrane coupling with overload protection is provided for the above problems. INVENTION CONTENTS

[0005] To solve the problems in the above background art, the utility model provides a kind of membrane coupling with overload protection, with brake force to rotating component, the speed of membrane coupling is reduced, prevent overload damage caused by high speed, and safety accidents caused by overload can also be avoided.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of membrane coupling with overload protection, including coupling main part, the coupling main part outside is equipped with overload protection component;

[0007] The overload protection component includes fixed ring, the fixed ring outside is equipped with the elastic telescopic link of uniform distribution, the elastic telescopic link is connected with centrifugal block, the outside of centrifugal block is equipped with matched brake frame, the centrifugal force is used to realize overload protection, when the speed of membrane coupling reaches certain value, centrifugal force generated by centrifugal block can overcome spring force, so that centrifugal block moves outward, and then form friction between centrifugal block and brake frame, so that the speed is reduced, the response speed of overload protection is related to speed, the higher the speed, the faster the response, without external control signal or sensor, structure is relatively simple, high reliability, applicable to some strict speed limit, and need to be protected by overload when high-speed operation, such as wind turbine, high-speed motor etc.

[0008] Preferably, the shaft sleeve is provided with a key groove matched with the driving shaft and the driven shaft.

[0009] Preferably, the shaft sleeve is provided with a key groove matched with the driving shaft and the driven shaft.

[0010] Preferably, the elastic telescopic rod comprises a cylinder body fixedly connected with a fixed ring, a movable plate is arranged in the cylinder body, the movable plate is fixedly connected with a movable rod, one end of the movable rod away from the movable plate penetrates through the cylinder body and is fixedly connected with a centrifugal block, and a spring is sleeved on the movable rod in the cylinder body.

[0011] Preferably, the brake frame comprises a ring body, a brake ring corresponding to the centrifugal block is arranged on the inner wall of the ring body, and the ring body is fixedly connected with a fixed frame.

[0012] Preferably, the fixed ring is fixedly connected with the intermediate shaft, and the central axis of the ring body, the brake ring and the intermediate shaft are in the same straight line.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The overload protection assembly is arranged, the centrifugal force is utilized to realize overload protection, the response speed of overload protection is related to the rotating speed, the higher the rotating speed is, the faster the response is, no external control signal or sensor is needed, the structure is relatively simple, and the reliability is high.

[0015] 2. The elastic telescopic rod and the brake frame are arranged, when the rotating speed of the membrane disc coupling reaches a certain value, the centrifugal force generated by the centrifugal block can overcome the spring force, the centrifugal block moves outward, friction is formed between the centrifugal block and the brake frame, and the rotating speed is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a structure schematic view of the shaft sleeve of the utility model;

[0018] Figure 3 It is a structure schematic view of the shaft sleeve of the utility model;

[0019] Figure 4 It is a structure schematic view of the intermediate shaft position of the utility model;

[0020] Figure 5The utility model discloses elastic telescopic rod's structural schematic diagram.

[0021] In the figure: 1, coupling main body;101, intermediate shaft;102, shaft sleeve;103, diaphragm;104, bolt;105, keyway;

[0022] 2, overload protection assembly;201, fixed ring;

[0023] 202, elastic telescopic rod;2021, barrel;2022, movable plate;2023, movable rod;2024, spring;

[0024] 203, centrifugal block;

[0025] 204, brake frame;2041, ring body;2042, brake ring;2043, fixed frame. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] As Figures 1 to 5 Indicated, the utility model provides a kind of membrane disc coupling with overload protection, including coupling main body 1, coupling main body 1 outside is equipped with overload protection assembly 2;

[0028] Overload protection assembly 2 includes fixed ring 201, and the outer side of fixed ring 201 is equipped with evenly distributed elastic telescopic rod 202, and elastic telescopic rod 202 is connected with centrifugal block 203, and the outer side of centrifugal block 203 is equipped with matched brake frame 204, utilizes the effect of centrifugal force to realize overload protection, and the response speed of overload protection is related to rotational speed, and the higher the rotational speed, the faster response, without external control signal or sensor, relatively simple structure, high reliability.

[0029] Specifically, coupling main body 1 includes intermediate shaft 101, and shaft sleeve 102 is arranged at the both ends of intermediate shaft 101, and shaft sleeve 102 is connected with driving shaft and driven shaft, diaphragm 103 is fastened on shaft sleeve 102 by pin or bolt, generally does not loosen or cause recoil between diaphragm 103 and shaft sleeve 102, and diaphragm 103 is arranged between shaft sleeve 102 and intermediate shaft 101, and diaphragm 103 is the core elastic element of membrane disc coupling, is usually made of very thin spring sheet, shape has hexagon, octagon etc., and there are several bolt holes on the circumference of diaphragm 103, for connecting shaft sleeve 102, and intermediate shaft 101, diaphragm 103, shaft sleeve 102 are connected by bolt 104.

[0030] Further, the shaft sleeve 102 is provided with a key groove 105 matched with the driving shaft and the driven shaft, and the key groove 105 is matched with the keys on the driving shaft and the driven shaft, so as to connect the shaft sleeve 102 with the driving shaft and the driven shaft.

[0031] Still further, the elastic telescopic rod 202 comprises a cylinder 2021 fixedly connected with the fixed ring 201, the cylinder 2021 is provided with a movable plate 2022, the movable plate 2022 is fixedly connected with a movable rod 2023, one end of the movable rod 2023 away from the movable plate 2022 penetrates through the cylinder 2021 and is fixedly connected with a centrifugal block 203, and the movable rod 2023 in the cylinder 2021 is sleeved with a spring 2024. When the rotating speed of the diaphragm coupling reaches a certain value, the centrifugal force generated by the centrifugal block 203 can overcome the force of the spring 2024, so that the centrifugal block 203 moves outward, and then friction is formed between the centrifugal block 203 and the brake frame 204, so as to reduce the rotating speed.

[0032] It is worth noting that the brake frame 204 comprises a ring body 2041, the inner wall of the ring body 2041 is provided with a brake ring 2042 corresponding to the centrifugal block 203, the ring body 2041 is fixedly connected with a fixed frame 2043, and the brake ring 2042 and the centrifugal block 203 are in contact to form friction, so as to achieve the purpose of reducing the rotating speed of the diaphragm coupling, and the fixed frame 2043 is fixed at a position.

[0033] It is worth noting that the fixed ring 201 is fixedly connected with the intermediate shaft 101, and the central axes of the ring body 2041, the brake ring 2042 and the intermediate shaft 101 are on the same straight line.

[0034] Working principle and process: connect the two shaft sleeves 102 to the corresponding driving shaft and driven shaft, and make the keys on the driving shaft and the driven shaft be in the key grooves 105, place the brake frame 204 of the overload protection assembly 2 at the corresponding position, place the intermediate shaft 101 between the two shaft sleeves 102, place the diaphragm 103 between the intermediate shaft 101 and the shaft sleeve 102, and connect the intermediate shaft 101, the diaphragm 103 and the shaft sleeve 102 through the bolts 104, adjust the position of the brake frame 204 to correspond to the position of the centrifugal block 203, then fix the position of the brake frame 204, when the rotating speed of the coupling main body 1 reaches a certain value, the centrifugal force acting on the centrifugal block 203 is greater than the force of the spring 2024, so that the centrifugal block 203 moves outward, and then the centrifugal block 203 contacts the brake ring 2042 on the outside, and friction is formed between them, so as to reduce the rotating speed of the coupling main body 1, form overload protection, and the response speed of the overload protection is related to the rotating speed, the higher the rotating speed, the faster the response; without external control signal or sensor, the structure is relatively simple, the reliability is high, and it is suitable for some devices which have strict limitations on rotating speed and need to be protected from overload when running at high speed, such as wind driven generators, high-speed motors and the like.

[0035] It is to be noted that, in the present document, relational terms such as first and second and the like can 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. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A membrane disc coupling with overload protection comprising a coupling body (1), characterized in that: The coupling body (1) is externally provided with an overload protection assembly (2); The overload protection assembly (2) comprises a fixed ring (201), the outer side of the fixed ring (201) is provided with uniformly distributed elastic telescopic rods (202), the elastic telescopic rods (202) are connected with centrifugal blocks (203), the outer side of the centrifugal blocks (203) is provided with matched brake frames (204).

2. A membrane disc coupling with overload protection according to claim 1, characterized in that: The coupling body (1) comprises a middle shaft (101), the both ends of the middle shaft (101) are provided with shaft sleeves (102), the shaft sleeves (102) and the middle shaft (101) are provided with diaphragms (103) therebetween, the middle shaft (101), the diaphragm (103) and the shaft sleeve (102) are connected through bolts (104).

3. A membrane disc coupling with overload protection according to claim 2, characterized in that: The shaft sleeve (102) is provided with key grooves (105) matched with driving shafts and driven shafts.

4. A membrane disc coupling with overload protection according to claim 2, characterized in that: The elastic telescopic rod (202) comprises a cylinder (2021) fixedly connected with the fixed ring (201), the cylinder (2021) is provided with a movable plate (2022) therein, the movable plate (2022) is fixedly connected with a movable rod (2023), one end of the movable rod (2023) away from the movable plate (2022) penetrates through the cylinder (2021) and is fixedly connected with the centrifugal block (203), and the movable rod (2023) in the cylinder (2021) is provided with a spring (2024) thereon.

5. A membrane disc coupling with overload protection according to claim 4, characterized in that: The brake frame (204) comprises a ring body (2041), the inner wall of the ring body (2041) is provided with a brake ring (2042) corresponding to the centrifugal block (203), and the ring body (2041) is fixedly connected with a fixed frame (2043).

6. A membrane disc coupling with overload protection according to claim 5, characterized in that: The fixed ring (201) is fixedly connected with the middle shaft (101), and the central axes of the ring body (2041), the brake ring (2042) and the middle shaft (101) are on the same straight line.

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