A flexible coupling for winch encoder

Abstract

The utility model discloses a flexible coupling for a winch encoder, comprising a coupling body and a shaft sleeve, wherein the coupling body comprises a rigid part and a flexible part arranged around the rigid part in a cross shape, and a plurality of strip grooves are arranged near the rigid part. The utility model can avoid damage to the encoder caused by the coaxiality error between the output shaft and the input shaft; at the same time, due to the structure of the flexible part and the strip grooves further designed on the flexible part, a part of inertial redundancy can be appropriately provided to reduce the accumulated error generated in the long-term operation of the encoder, thereby ensuring the working accuracy of the encoder.

Description

Technical Field

[0001] The utility model relates to a flexible coupling for a winch encoder, in particular to the technical field of couplings. Background Art

[0002] When the winch needs to detect the running speed and direction of the drum during movement, a rotary encoder needs to be installed at the output shaft end of the drum. The drum output shaft and the encoder input shaft are coaxially connected. When the drum rotates, the encoder converts the rotation speed and direction of the winch output shaft into an electrical pulse signal and transmits it to the PLC.

[0003] Since the rotary encoder is a precision electrical sensor, if it is not installed properly, it will cause the encoder to not work properly or be easily damaged during use. The existing connection method usually uses a rigid coupling. On the one hand, if there is an error in the coaxiality between the encoder and the output shaft, it is easy to cause damage to the encoder during operation. On the other hand, when starting and stopping at high speed, it is easy to cause the encoder to produce cumulative errors due to inertia. Therefore, a flexible coupling is needed to ensure the long-term working accuracy of the encoder. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and proposes a flexible coupling for a winch encoder, wherein the flexible coupling comprises a coupling body and a sleeve, wherein the coupling body comprises a rigid portion and four flexible portions arranged in a cross shape around the rigid portion, wherein two of the four flexible portions are bent toward one side of the coupling body and closed to form a first connecting end, and the other two flexible portions are bent toward the other side of the coupling body and closed to form a second connecting end, a plurality of strip grooves are provided at positions of the first connecting end and the second connecting end close to the rigid portion, a connecting sleeve is provided at a side of the first connecting end and the second connecting end away from the rigid portion, a plurality of connecting sleeve through holes are opened on the side wall of the connecting sleeve, and the sleeve is coaxially sleeved in the connecting sleeve and fixedly connected by a stop screw.

[0005] Furthermore, the top of the stop screw is a plane, which can effectively increase the contact surface with the shaft sleeve, thereby preventing relative sliding.

[0006] Furthermore, a thread matching with a stop screw is provided in the through hole of the connecting sleeve.

[0007] Furthermore, the shaft sleeve includes several models with different sizes and inner wall cross-sections of round, D-shaped and square. The various models of shaft sleeves provide a stronger universal guarantee for the flexible coupling.

[0008] In order to further tightly connect the shaft sleeve and the coupling body, an optional method is to open a shaft sleeve hole on the shaft sleeve to match the fastening screw.

[0009] Furthermore, the stop screw is a headless hexagon socket machine screw.

[0010] In a preferred solution, the coupling body is made of stainless steel. In outdoor environments, the coupling body made of stainless steel can ensure connection flexibility while extending its service life.

[0011] In another preferred embodiment, the coupling body is made of ABS plastic material, which can be integrally formed to reduce production costs.

[0012] Beneficial effects: The utility model adopts a coupling body with a flexible part structure, which can avoid damage to the encoder due to coaxiality errors between the output shaft and the input shaft; at the same time, due to the structure of the flexible part and the strip grooves further designed on the flexible part, the output shaft of the encoder can be provided with tangential inertia redundancy to reduce the accumulated errors generated in the long-term operation of the encoder, thereby ensuring the working accuracy of the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an exploded schematic diagram of a flexible coupling for a winch encoder;

[0014] In the figure, 1. coupling body, 2. rigid part, 3. flexible part, 4. strip groove, 5. connecting sleeve, 6. connecting sleeve through hole, 7. stop screw, 8. shaft sleeve, 9. shaft sleeve hole, 10. first connecting end, 11. second connecting end. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, fixed connection, detachable connection, or integral connection, mechanical connection, or electrical connection; direct connection, connection through an intermediate medium, or internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0017] Example 1, see attached Figure 1A flexible coupling for a winch encoder, the flexible coupling comprises a coupling body 1 and a sleeve 8, the coupling body 1 comprises a rigid part 2 and four flexible parts 3 arranged in a cross shape around the rigid part, two of the four flexible parts 3 are bent toward one side of the coupling body 1 and closed to form a first connection end 10, and the other two flexible parts are bent toward the other side of the coupling body and closed to form a second connection end 11. This structure can avoid damage to the encoder caused by the coaxiality error of the output shaft and the input shaft;

[0018] A plurality of strip grooves 4 are provided near the rigid part at the first connection end 10 and the second connection end 12, which can provide tangential inertia redundancy for the output shaft of the encoder to reduce the accumulated error generated in the long-term operation of the encoder, thereby ensuring the working accuracy of the encoder.

[0019] In this embodiment, a connecting sleeve 5 is provided on the side of the first connecting end 10 and the second connecting end 11 away from the rigid part, and a plurality of connecting sleeve through holes 6 are provided on the side wall of the connecting sleeve 5. The shaft sleeve 8 is coaxially sleeved in the connecting sleeve 5 and fixedly connected by a stop screw 7. A thread matching the stop screw 7 is provided in the connecting sleeve through hole 6. The stop screw 7 is a headless hexagon socket machine screw. The top of the stop screw 7 is a plane. The stop screw 7 at the top of the plane can effectively increase the contact surface with the shaft sleeve 8, thereby preventing relative sliding.

[0020] In this embodiment, as shown in the attached Figure 1 The multiple shaft sleeves 8 shown in the figure include several different sizes, and the inner wall cross-sections are circular, D-shaped and square. The multiple types of shaft sleeves provide a stronger universal guarantee for the flexible coupling.

[0021] In this embodiment, the coupling body 1 is made of stainless steel. In outdoor environments, the coupling body made of stainless steel can extend its service life while ensuring connection flexibility.

[0022] Embodiment 2: In order to further tightly connect the shaft sleeve and the coupling body 1, an optional implementation method is to open a shaft sleeve hole 9 on the shaft sleeve 8 to match with the fastening screw.

[0023] In embodiment 3, the coupling body 1 is made of ABS plastic material. The use of ABS plastic material can be integrally formed to reduce production costs.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible coupling for a winch encoder, characterized in that: The flexible coupling comprises a coupling body and a sleeve, the coupling body comprises a rigid part and four flexible parts arranged in a cross shape around the rigid part, two of the four flexible parts are bent toward one side of the coupling body and closed to form a first connection end, and the other two flexible parts are bent toward the other side of the coupling body and closed to form a second connection end, the first connection end and the second connection end are both provided with a plurality of strip grooves near the rigid part, the first connection end and the second connection end are both provided with a connecting sleeve on the side away from the rigid part, a plurality of connecting sleeve through holes are opened on the side wall of the connecting sleeve, and the sleeve is coaxially sleeved in the connecting sleeve and fixedly connected by a stop screw.

2. A flexible coupling for a winch encoder according to claim 1, characterized in that: The top end of the stop screw is a plane.

3. A flexible coupling for a winch encoder according to claim 2, characterized in that: The connecting sleeve through hole is provided with a thread matched with a stop screw.

4. A flexible coupling for a winch encoder according to claim 3, characterized in that: The shaft sleeves include several models with different sizes and inner wall sections of circular, D-shaped and square shapes.

5. A flexible coupling for a winch encoder according to claim 4, characterized in that: The shaft sleeve is provided with a shaft sleeve hole matched with a fastening screw.

6. A flexible coupling for a winch encoder according to claim 1, characterized in that: The stop screw is a headless hexagon socket machine screw.

7. A flexible coupling for a winch encoder according to claim 1, characterized in that: The coupling body is made of stainless steel.

8. A flexible coupling for a winch encoder according to claim 1, characterized in that: The coupling body is made of ABS plastic material.

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