Synchronizing wheel over-twisting protection device

Abstract

The utility model provides a synchronous wheel over-twisting protection device which comprises a rotating shaft, a protection mechanism is connected outside the rotating shaft, and the rotating shaft is connected with a synchronous wheel through the protection mechanism. The protection mechanism comprises an annular permanent magnet connected to the inner ring surface of the synchronous wheel and an electromagnet inserted into the annular permanent magnet, and the electromagnet is connected to the outer surface of the rotating shaft. The protection mechanism further comprises a magnetic force control assembly connected to the outer surface of the rotating shaft, and the magnetic force control assembly is connected with the electromagnet. When the synchronizing wheel rotates too fast, the rotating shaft gradually stops rotating along with the synchronizing wheel, and the rotating shaft is protected.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of synchronous wheel equipment, in particular to a synchronous wheel over-torque protection device. Background Art

[0002] Torque refers to the force that twists an object to cause it to deform.

[0003] At present, the synchronous wheel and the rotating shaft are often connected by a key. In this way, if foreign objects are stuck in the synchronous wheel, the torque will continue to increase in order to continue to operate, which can easily cause damage to some parts in the machine. Utility Model Content

[0004] The utility model mainly provides a synchronous wheel over-torque protection device to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A synchronous wheel over-torque protection device comprises a rotating shaft, the outside of the rotating shaft is connected with a protection mechanism, and the rotating shaft is connected to the synchronous wheel through the protection mechanism;

[0007] The protection mechanism includes an annular permanent magnet connected to the inner ring surface of the synchronous wheel, and an electromagnet inserted into the annular permanent magnet, and the electromagnet is connected to the outer surface of the rotating shaft;

[0008] The protection mechanism also includes a magnetic force control component connected to the outer surface of the rotating shaft, and the magnetic force control component is connected to the electromagnet.

[0009] Furthermore, a bearing is provided between the rotating shaft and the synchronous wheel, and the rotating shaft is connected to the synchronous wheel via the bearing.

[0010] Furthermore, a gap is provided between the annular permanent magnet and the electromagnet.

[0011] Furthermore, the inner surface of the synchronous wheel is connected with a clamping ring, and the inner ring of the clamping ring is provided with a clamping groove.

[0012] Furthermore, the magnetic control component includes a guide cylinder connected to the outer surface of the rotating shaft, a spring inserted into the guide cylinder, and a lifting rod inserted into the spring. One end of the lifting rod extending to the outside is connected to a card bead, and the card bead is used to engage with the card slot.

[0013] Furthermore, one end of the spring close to the rotating shaft is bonded to the inside of the guide cylinder.

[0014] Furthermore, the magnetic force control component also includes a sliding rheostat plugged into the outer surface of the rotating shaft, and the sliding rheostat is connected to the lifting rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When the synchronous wheel rotates too fast, the synchronous wheel drives the clamping ring to rotate quickly, so that the clamping groove on the clamping ring continuously slides over the clamping bead, so that the lifting rod on the clamping bead moves, and the sliding rheostat is connected to the lifting rod so that the clamping bead on the lifting rod cannot be clamped into the inside of the clamping groove. The sliding rheostat connected to the lifting rod is adjusted by movement of the lifting rod, and the sliding rheostat is connected to the electromagnet, so as to control the magnetic force of the electromagnet. That is, when the synchronous wheel rotates too fast, the magnetic force of the electromagnet is weakened, so that the rotating shaft gradually stops rotating with the synchronous wheel, thereby protecting the rotating shaft.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 The utility model is a cross-sectional view Figure 1 ;

[0020] Figure 3 The utility model is a cross-sectional view Figure 2 ;

[0021] Figure 4 The utility model is a cross-sectional view Figure 3 .

[0022] In the figure: 1, rotating shaft; 2, protection mechanism; 21, annular permanent magnet; 22, electromagnet; 23, magnetic control assembly; 231, guide cylinder; 232, spring; 233, lifting rod; 234, card bead; 235, sliding rheostat; 24, gap; 3, synchronous wheel; 31, clamping ring; 32, card slot. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] For examples, please refer to the attached Figure 1-4 , a synchronous wheel over-torque protection device, comprising a rotating shaft 1, the rotating shaft 1 is externally connected with a protection mechanism 2, and the rotating shaft 1 is connected to a synchronous wheel 3 through the protection mechanism 2;

[0027] The protection mechanism 2 includes an annular permanent magnet 21 connected to the inner ring surface of the synchronous wheel 3, and an electromagnet 22 inserted into the annular permanent magnet 21, and the electromagnet 22 is connected to the outer surface of the rotating shaft 1;

[0028] The protection mechanism 2 further includes a magnetic force control component 23 connected to the outer surface of the rotating shaft 1 , and the magnetic force control component 23 is connected to the electromagnet 22 .

[0029] For details, please refer to the attached Figure 1 and 2 A bearing 11 is provided between the rotating shaft 1 and the synchronous wheel 3, and the rotating shaft 1 is connected to the synchronous wheel 3 through the bearing 11;

[0030] A gap 24 is provided between the annular permanent magnet 21 and the electromagnet 22;

[0031] It should be noted that, in this embodiment, the bearing 11 is provided to provide support for the synchronous wheel 3, and when the synchronous wheel 3 increases the torque, the synchronous wheel 3 is caused to idle, thereby reducing the friction between the synchronous wheel 3 and the rotating shaft 1;

[0032] Furthermore, the gap 24 between the annular permanent magnet 21 and the electromagnet 22 reduces the friction between the annular permanent magnet 21 and the electromagnet 22 .

[0033] For details, please refer to the attached Figure 3 and 4The inner surface of the synchronous wheel 3 is connected with a clamping ring 31, and the inner ring of the clamping ring 31 is provided with a clamping groove 32;

[0034] The magnetic force control assembly 23 includes a guide cylinder 231 connected to the outer surface of the rotating shaft 1, a spring 232 inserted into the guide cylinder 231, and a lifting rod 233 inserted into the spring 232. One end of the lifting rod 233 extending to the outside is connected with a card bead 234, and the card bead 234 is used to be clamped with the card slot 32.

[0035] It should be noted that, in this embodiment, when the synchronous wheel 3 rotates too fast, the synchronous wheel 3 drives the clamping ring 31 to rotate quickly, so that the clamping groove 32 on the clamping ring 31 continuously slides over the clamping bead 234. When the synchronous wheel 3 rotates smoothly, the clamping bead 234 is clamped into the clamping groove 32, and the rotating shaft 1 rotates with the synchronous wheel 3. In this way, the position of the clamping bead 234 is controlled.

[0036] Furthermore, the spring 232 pushes the locking bead 234 to maintain the abutment between the locking bead 234 and the locking ring 31 .

[0037] For details, please refer to the attached Figure 3 and 4 , one end of the spring 232 close to the rotating shaft 1 is bonded to the inside of the guide cylinder 231;

[0038] The magnetic force control assembly 23 further includes a sliding rheostat 235 plugged into the outer surface of the rotating shaft 1, and the sliding rheostat 235 is connected to the lifting rod 233;

[0039] It should be noted that, in the present embodiment, the sliding rheostat 235 is connected to the lifting rod 233 so that the card bead 234 on the lifting rod 233 cannot be inserted into the card slot 32. The sliding rheostat 235 connected thereto is adjusted by moving the lifting rod 233, and the sliding rheostat 235 is connected to the electromagnet 22, thereby controlling the magnetic force of the electromagnet 22. That is, when the synchronous wheel 3 rotates too fast, the magnetic force of the electromagnet 22 is weakened, so that the rotating shaft 1 gradually stops rotating with the synchronous wheel 3, thereby protecting the rotating shaft 1.

[0040] The specific operation mode of the utility model is as follows:

[0041] When the rotating shaft 1 needs to be driven to rotate, the synchronous wheel 3 rotates. Since the permanent magnet 21 in the synchronous wheel 3 is magnetically connected with the electromagnet 22 on the rotating shaft 1, the rotating shaft 1 rotates along with the synchronous wheel 3.

[0042] When the synchronous wheel 3 rotates too fast, the synchronous wheel 3 drives the clamping ring 31 to rotate quickly, so that the slot 32 on the clamping ring 31 continuously slides over the clamping bead 234, so that the lifting rod 233 on the clamping bead 234 moves, and the sliding rheostat 235 is connected to the lifting rod 233 so that the clamping bead 234 on the lifting rod 233 cannot be inserted into the slot 32. The sliding rheostat 235 connected to the lifting rod 233 is adjusted by moving the lifting rod 233, and the sliding rheostat 235 is connected to the electromagnet 22, so as to control the magnetic force of the electromagnet 22. That is, when the synchronous wheel 3 rotates too fast, the magnetic force of the electromagnet 22 is weakened, so that the rotating shaft 1 gradually stops rotating with the synchronous wheel 3, thereby protecting the rotating shaft 1.

[0043] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A synchronous wheel over-torque protection device, comprising a rotating shaft (1), characterized in that: The outside of the rotating shaft (1) is connected to a protection mechanism (2), and the rotating shaft (1) is connected to a synchronous wheel (3) via the protection mechanism (2); The protection mechanism (2) comprises an annular permanent magnet (21) connected to the inner ring surface of the synchronous wheel (3), and an electromagnet (22) inserted into the annular permanent magnet (21), and the electromagnet (22) is connected to the outer surface of the rotating shaft (1); The protection mechanism (2) further comprises a magnetic force control component (23) connected to the outer surface of the rotating shaft (1), and the magnetic force control component (23) is connected to the electromagnet (22).

2. A synchronous wheel over-torque protection device according to claim 1, characterized in that: A bearing (11) is provided between the rotating shaft (1) and the synchronous wheel (3), and the rotating shaft (1) is connected to the synchronous wheel (3) via the bearing (11).

3. The synchronous wheel over-torque protection device according to claim 1, characterized in that: A gap (24) is provided between the annular permanent magnet (21) and the electromagnet (22).

4. The synchronous wheel over-torque protection device according to claim 1, characterized in that: The inner surface of the synchronous wheel (3) is connected with a clamping ring (31), and the inner ring of the clamping ring (31) is provided with a clamping groove (32).

5. The synchronous wheel over-torque protection device according to claim 4, characterized in that: The magnetic force control component (23) comprises a guide cylinder (231) connected to the outer surface of the rotating shaft (1), a spring (232) inserted into the guide cylinder (231), and a lifting rod (233) inserted into the spring (232), and one end of the lifting rod (233) extending to the outside is connected to a card bead (234), and the card bead (234) is used to be locked with the card slot (32).

6. A synchronous wheel over-torque protection device according to claim 5, characterized in that: One end of the spring (232) close to the rotating shaft (1) is bonded to the inside of the guide cylinder (231).

7. A synchronous wheel over-torque protection device according to claim 6, characterized in that: The magnetic force control component (23) further comprises a sliding rheostat (235) plugged into the outer surface of the rotating shaft (1), and the sliding rheostat (235) is connected to the lifting rod (233).

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