Flat push key type positioning safety chuck

Abstract

The utility model discloses a horizontal push key type positioning safety chuck which comprises a bearing seat and a rotating shaft with one end movably arranged in the bearing seat, and a hand wheel is arranged at one end of the rotating shaft. A clamping opening is formed in the hand wheel; a hand wheel reset assembly is arranged below the clamping opening. A positioning assembly is arranged between the rotating shaft and the hand wheel; the positioning assembly comprises a flat key arranged on the side face of the rotating shaft, and accurate positioning of the hand wheel and the rotating shaft is achieved through the flat key. A flat key positioning mode is adopted, positioning is more accurate and effective, and safety is higher compared with steel ball positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of a flat push key type positioning safety chuck, in particular to a flat push key type positioning safety chuck. Background Art

[0002] The winding chuck is a coupling connected to the transmission shaft, with frequent on-off actions. It is used in textile, papermaking, wire, cable, packaging, printing, plastic, leather, tire manufacturing, battery manufacturing and other industries. The winding chuck is used to wind or unwind the material. It can be connected to the motor for active rotation or passive rotation as needed. Manual or pneumatic dampers and brakes can also be installed on the output circular shaft to adjust the material tension.

[0003] The existing product steel ball positioning structure has the problem that the preload force of the steel ball positioning spring is too large, and it is difficult for people to open the hand wheel. When the spring preload force is released, the steel ball positioning effect is not good, and the hand wheel is easy to open automatically during the winding rotation process.

[0004] Therefore, it is urgent to provide a flat push key type positioning safety chuck to solve the above technical problems. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a flat push key type positioning safety chuck, comprising a bearing seat and a rotating shaft with one end movably arranged in the bearing seat, and a hand wheel is arranged at one end of the rotating shaft;

[0006] A clamping opening is arranged inside the hand wheel;

[0007] A hand wheel reset assembly is provided below the clamping opening;

[0008] A positioning assembly is arranged between the rotating shaft and the hand wheel; the positioning assembly comprises a flat key arranged on the side of the rotating shaft, and the flat key realizes the precise positioning of the hand wheel and the rotating shaft.

[0009] Preferably, the positioning assembly includes a positioning groove arranged on the rotating shaft, a through hole arranged on the handwheel, a positioning pin arranged in the through hole, a flat key arranged in the positioning groove, a tower spring arranged between the flat key and the positioning groove, a waist-shaped hole arranged on the positioning pin, and a positioning through pin arranged on the side wall of the through hole and adapted to the waist-shaped hole.

[0010] Preferably, the flat key can be received in the positioning groove; the positioning pin is pressed downward, the flat key is locked in the positioning groove, and the positioning assembly releases the connection between the hand wheel and the rotating shaft;

[0011] When the positioning pin is released, the flat key is automatically reset under the action of the conical spring.

[0012] Preferably, the diameter of one end of the conical spring close to the flat key is smaller than the diameter of the other end.

[0013] Preferably, the hand wheel and the clamp are connected by two bolt groups that are arranged at an angle relative to each other.

[0014] Preferably, the rotating shaft is connected to the bearing seat via a rolling bearing.

[0015] Preferably, the handwheel resetting assembly includes a guide groove arranged on the surface of the rotating shaft along the length direction of the rotating shaft, a guide pin arranged on the handwheel and adapted to the guide groove, and a second limit member arranged at the other end of the guide pin.

[0016] Preferably, a bolt roller bearing is provided on a side of the bearing seat close to the hand wheel, and the bolt roller bearing is connected to the bearing seat via a nut.

[0017] Preferably, an end cover is provided on the side of the bearing seat and the rotating shaft away from the hand wheel.

[0018] Beneficial effects of the utility model

[0019] The utility model provides a flat push key type positioning safety chuck, wherein a positioning component is arranged between the rotating shaft and the hand wheel; the positioning component comprises flat keys relatively arranged on two sides of the rotating shaft, and the flat keys realize accurate positioning of the hand wheel and the rotating shaft.

[0020] The flat key positioning method is adopted, which is more accurate and effective, and safer than the steel ball positioning. The positioning pin is used to press down to open the handwheel. After the handwheel is closed, the flat key is automatically reset by the force of the tower spring. The tower spring is used, the space is small, and the reset effect is better. The flat key positioning can not only play the role of closing and clamping the handwheel, but also play the role of connecting the handwheel and the rotating shaft for synchronous rotation. The positioning component can be positioned on both sides or on one side.

[0021] The utility model discloses a flat push key type positioning safety chuck which is suitable for various high and low speed winding machines and has strong universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a left-side structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the exploded structure of the positioning assembly of the utility model;

[0025] Among them, 1. bearing seat; 2. rotating shaft; 3. handwheel; 4. clamp; 5. handwheel reset assembly; 6. positioning assembly; 61. positioning groove; 62. through hole; 63. positioning pin; 64. flat key; 65. tower spring; 66. waist hole; 67. positioning pin; 7. bolt group; 8. end cover; 9. rolling bearing; 10. bolt roller bearing. DETAILED DESCRIPTION

[0026] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0027] Reference Figures 1 to 3

[0028] The utility model provides a flat push key type positioning safety chuck, comprising a bearing seat 1 and a rotating shaft 2 with one end movably arranged in the bearing seat 1, a hand wheel 3 is arranged at one end of the rotating shaft 2; a clamping opening 4 is arranged inside the hand wheel 3; a hand wheel reset assembly 5 is arranged below the clamping opening 4; a positioning assembly 6 is arranged between the rotating shaft 2 and the hand wheel 3; the positioning assembly 6 comprises a flat key 64 arranged on the side of the rotating shaft 2, and the flat key 64 realizes the precise positioning of the hand wheel 3 and the rotating shaft 2. The positioning assembly 6 can be arranged on one side or both sides. When the two sides are arranged, the positioning assembly 6 is relatively arranged on both sides of the rotating shaft 2. The flat push key type positioning safety chuck is suitable for base or flange installation. The positioning of the flat key 64 can not only play the role of closing and clamping the hand wheel 3, but also play the role of connecting the hand wheel 3 and the rotating shaft 2 for synchronous rotation. The positioning method of the flat key 64 is adopted, and the positioning is more accurate and effective, and the safety is higher than that of the steel ball positioning. The flat push key type positioning safety chuck of the utility model is suitable for various types of high and low speed winding machinery, and has strong versatility.

[0029] In one embodiment, the positioning assembly 6 includes a positioning groove 61 provided on the rotating shaft 2, a through hole 62 provided on the hand wheel 3, a positioning pin 63 provided in the through hole 62, a flat key 64 provided in the positioning groove 61, a tower spring 65 provided between the flat key 64 and the positioning groove 61, a waist-shaped hole 66 provided on the positioning pin 63, and a positioning through pin 67 provided on the side wall of the through hole 62 and adapted to the waist-shaped hole 66, one end of the positioning pin 63 abuts against the flat key 64, and the flat key 64 is adapted to the positioning groove 61. One end of the flat key 64 is clamped in the through hole 62, and the other end is clamped in the positioning groove 61, so as to realize the positioning of the hand wheel 3 and the rotating shaft 2. In another embodiment, the hand wheel 3 is provided with a groove corresponding to the positioning pin 63, so as to facilitate pressing the positioning pin 63.

[0030] In one embodiment, the flat key 64 can be accommodated in the positioning groove 61; the positioning pin 63 is pressed downward, the flat key 64 is clamped in the positioning groove 61, and the positioning assembly 6 releases the connection between the hand wheel 3 and the rotating shaft 2; the positioning pin 63 is released, and the flat key 64 is automatically reset under the action of the tower spring 65. The positioning pin 63 is used to press downward to open the hand wheel 3, and after the hand wheel 3 is closed, the flat key 64 is automatically reset by the force of the tower spring 65. The tower spring 65 is used, and the space is small and the reset effect is better.

[0031] In one embodiment, the diameter of one end of the conical spring 65 close to the flat key 64 is smaller than the diameter of the other end.

[0032] In one embodiment, the handwheel 3 and the clamp 4 are connected by two bolt groups 7 that are tilted at an angle relative to each other. The tilting angle is set at an acute angle, thereby achieving a fixed connection between the handwheel 3 and the clamp 4 and effectively preventing the clamp from loosening during use.

[0033] In one embodiment, the rotating shaft 2 is connected to the bearing seat 1 via a rolling bearing 9 .

[0034] In one embodiment, the handwheel reset assembly 5 includes a guide groove arranged on the surface of the rotating shaft 2 along the length direction of the rotating shaft 2, a guide pin arranged on the handwheel 3 and adapted to the guide groove, and a second limit member arranged at the other end of the guide pin, and the guide pin can move along the guide of the guide groove.

[0035] In one embodiment, a bolt roller bearing is provided on a side of the bearing seat 1 close to the hand wheel 3 , and the bolt roller bearing is connected to the bearing seat 1 via a nut.

[0036] In one embodiment, an end cover 8 is provided on the side of the bearing seat 1 and the rotating shaft 2 away from the hand wheel 3 .

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A flat push button type positioning safety chuck, characterized in that: It comprises a bearing seat and a rotating shaft with one end movably arranged in the bearing seat, wherein a hand wheel is arranged at one end of the rotating shaft; A clamping opening is arranged inside the hand wheel; A hand wheel reset assembly is provided below the clamping opening; A positioning assembly is arranged between the rotating shaft and the hand wheel; the positioning assembly comprises a flat key arranged on the side of the rotating shaft, and the flat key realizes the precise positioning of the hand wheel and the rotating shaft.

2. The flat push button type positioning safety chuck according to claim 1, characterized in that: The positioning assembly includes a positioning groove arranged on the rotating shaft, a through hole arranged on the hand wheel, a positioning pin arranged in the through hole, a flat key arranged in the positioning groove, a tower spring arranged between the flat key and the positioning groove, a waist-shaped hole arranged on the positioning pin, and a positioning through pin arranged on the side wall of the through hole and adapted to the waist-shaped hole.

3. The flat push button type positioning safety chuck according to claim 2, characterized in that: The flat key can be received in the positioning groove; the positioning pin is pressed downward, the flat key is locked in the positioning groove, and the positioning assembly releases the connection between the hand wheel and the rotating shaft; When the positioning pin is released, the flat key is automatically reset under the action of the conical spring.

4. The flat push button type positioning safety chuck according to claim 2, characterized in that: The diameter of one end of the conical spring close to the flat key is smaller than the diameter of the other end.

5. The flat push button type positioning safety chuck according to claim 1, characterized in that: The hand wheel is connected to the clamping opening through two bolt groups which are arranged at an angle relative to each other.

6. The flat push button type positioning safety chuck according to claim 1, characterized in that: The rotating shaft is connected to the bearing seat via a rolling bearing.

7. The flat push button type positioning safety chuck according to claim 1, characterized in that: The hand wheel reset assembly comprises a guide groove arranged on the surface of the rotating shaft along the length direction of the rotating shaft, a guide pin arranged on the hand wheel and adapted to the guide groove, and a second limiter arranged at the other end of the guide pin.

8. The flat push button type positioning safety chuck according to claim 1, characterized in that: A bolt roller bearing is arranged on one side of the bearing seat close to the hand wheel, and the bolt roller bearing is connected to the bearing seat through a nut.

9. The flat push button type positioning safety chuck according to claim 1, characterized in that: An end cover is arranged on the side of the bearing seat and the rotating shaft away from the hand wheel.

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