Synchronous belt tensioning mechanism in winder

Abstract

The utility model discloses a synchronous belt tensioning mechanism in a winder, which comprises a winder hub, a turntable is axially arranged at the center of the winder hub, an inner gear is arranged on the winder hub, a driven belt wheel is arranged on the inner gear, a mounting frame is arranged on the turntable, a motor is arranged on the mounting frame, and the driven belt wheel is arranged on the mounting frame. A driving belt wheel is arranged on a working shaft of the motor, a synchronous belt is wound on the driving belt wheel and the driven belt wheel, a tensioning elastic piece is arranged on the installation frame, a tensioning shaft is arranged at one end of the tensioning elastic piece, and the peripheral face of the tensioning shaft abuts against the outer side face of the synchronous belt. According to the synchronous belt tensioning mechanism in the winder, the synchronous belt in the winder can be tensioned, so that the synchronous belt can be kept in a good working state.

Description

Technical Field

[0001] The utility model relates to a synchronous belt tensioning mechanism in a wire reel, belonging to the technical field of wire reel products. Background Art

[0002] The cable reel is used to wind up a relatively long cable. The cable is wound on the reel, and the cable is pulled out when in use. After use, the cable is reeled up and wound up on the reel again. In order to save effort when reeling in, a motor can be set on the reel hub to assist in reeling in. The motor drives the reel hub to rotate and reel in. A pulley can be used for transmission, but the pulley will expand and contract under extreme cold and hot conditions, and the synchronization will become loose, etc., which may lead to a decrease in transmission efficiency or transmission failure. Therefore, it is necessary to consider a mechanism for tensioning the synchronization. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a synchronous belt tensioning mechanism in a wire reel, which can tension the synchronous belt in the wire reel to keep it in a good working state.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: to provide a synchronous belt tensioning mechanism in a cable reel, which includes a cable reel hub, a turntable is arranged on the central axis of the cable reel hub, an internal gear is arranged on the cable reel hub, a passive pulley is arranged on the internal gear, a mounting frame is arranged on the turntable, a motor is arranged on the mounting frame, a driving pulley is arranged on the working shaft of the motor, a synchronous belt is wound around the driving pulley and the passive pulley, a tensioning spring is arranged on the mounting frame, a tensioning shaft is arranged at one end of the tensioning spring, and the outer peripheral surface of the tensioning shaft is against the outer side surface of the synchronous belt.

[0005] Preferably, the diameter of the driving pulley is smaller than the diameter of the driven pulley.

[0006] Preferably, the diameter of the driven pulley is smaller than the diameter of the internal gear.

[0007] Preferably, the central axis of the driven pulley is parallel to the central axis of the internal gear.

[0008] The beneficial effects of the present invention are as follows: the synchronous belt tensioning mechanism in the wire reel of the present invention can tension the synchronous belt in the wire reel to keep it in a good working state, and has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0010] Figure 1 It is a structural schematic diagram of the synchronous belt tensioning mechanism in the wire reel of the utility model. DETAILED DESCRIPTION

[0011] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0012] See also Figure 1 A synchronous belt tensioning mechanism in a cable reel comprises a cable reel hub 1, a turntable 2 is arranged on the central axis of the cable reel hub 1, an internal gear 3 is arranged on the cable reel hub 1, a passive pulley 4 is arranged on the internal gear 3, a mounting frame 5 is arranged on the turntable 3, a motor 6 is arranged on the mounting frame 5, a driving pulley 7 is arranged on the working shaft of the motor 6, a synchronous belt 8 is wound around the driving pulley 7 and the passive pulley 4, a tensioning spring 9 is arranged on the mounting frame 5, a tensioning shaft 10 is arranged at one end of the tensioning spring 9, and the outer peripheral surface of the tensioning shaft 10 is against the outer side surface of the synchronous belt 8.

[0013] Preferably, the diameter of the driving pulley 7 is smaller than the diameter of the driven pulley 4 .

[0014] Preferably, the diameter of the driven pulley 4 is smaller than the diameter of the internal gear 3 .

[0015] Preferably, the central axis of the driven pulley 4 is parallel to the central axis of the internal gear 3 .

[0016] When the synchronous belt tensioning mechanism in the cable reel of the present invention is in operation, the motor 6 drives the active pulley 7 to rotate during cable reeling, which in turn drives the passive pulley 4 to rotate via the synchronous belt 8. The passive pulley 4 drives the internal gear 3 to rotate, and the internal gear 3 drives the cable reel hub 1 to rotate, thereby reeling the cable 11 onto the cable reel hub 1. The tensioning spring 9 causes the outer circumference of the tensioning shaft 10 to always contact the outer surface of the synchronous belt 8, thereby tightening the synchronous belt 8. This allows the synchronous belt 8 and the pulleys to continue to operate normally in extremely cold or hot environments, maintaining good transmission performance.

[0017] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A synchronous belt tensioning mechanism in a wire reel, comprising a wire reel hub, wherein a rotating disk is provided in the central axial direction of the wire reel hub, characterized in that: An internal gear is provided on the reel hub, a passive pulley is provided on the internal gear, a mounting frame is provided on the turntable, a motor is provided on the mounting frame, a driving pulley is provided on the working shaft of the motor, a synchronous belt is wound around the driving pulley and the driven pulley, a tensioning spring is provided on the mounting frame, a tensioning shaft is provided at one end of the tensioning spring, and the outer peripheral surface of the tensioning shaft is against the outer side surface of the synchronous belt.

2. The synchronous belt tensioning mechanism in the cable reel according to claim 1, characterized in that: The diameter of the driving pulley is smaller than the diameter of the driven pulley.

3. The synchronous belt tensioning mechanism in the cable reel according to claim 1 or 2, characterized in that: The diameter of the driven pulley is smaller than the diameter of the internal gear.

4. The synchronous belt tensioning mechanism in the cable reel according to claim 3, characterized in that: The central axis of the driven pulley is parallel to the central axis of the internal gear.

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