Anti-overloading safety coupling
By introducing overload protection components and heat dissipation structures into the coupling, the problems of overload and overheating in traditional couplings are solved, thereby improving the safety and economy of the equipment.
Patent Information
- Application Number
- CN202520326042.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional couplings lack effective overload protection, leading to equipment damage and economic losses. Furthermore, existing overload protection mechanisms are complex, unreliable, and costly.
An overload protection assembly consisting of a half-coupling, double-row roller chain, protective cover, inner sleeve, elastic plate, and outer sleeve is adopted. The elastic plate and centrifugal force separate the roller chain from the ratchet teeth when overloaded. Combined with air inlet and heat sink, heat dissipation and cooling are carried out to prevent overload and overheating.
It effectively avoids coupling breakage under overload, improves service life, and prevents parts from overheating through heat dissipation and cooling, thus enhancing the safety and economy of the equipment.
Smart Images
Figure CN223767966U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coupling technology, and in particular to an overload-proof safety coupling. Background Technology
[0002] In the transmission systems of various mechanical equipment, couplings are used to connect shafts in two different mechanisms, enabling them to rotate together to transmit torque;
[0003] However, in actual operation, when equipment malfunctions (such as overload, jamming, etc.), excessive torque may damage the coupling, or even further damage the connected equipment components, resulting in serious economic losses and increased downtime.
[0004] Traditional couplings often lack effective overload protection, or their overload protection mechanisms are complex, unreliable, and costly, making it difficult to meet the requirements of modern industrial production for equipment safety and economy.
[0005] Therefore, this utility model proposes an overload-proof safety coupling. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings of existing technologies and propose an overload-resistant safety coupling.
[0007] To achieve the above objectives, this utility model adopts the following technical solution: an overload-resistant safety coupling, comprising:
[0008] A coupling assembly, comprising two half-couplings and a double-row roller chain, wherein the double-row roller chain is disposed at one end of the two half-couplings that are close to each other;
[0009] An overload protection assembly consists of two protective covers disposed on both sides of a double-row roller chain. An inner sleeve, an elastic plate, and an outer sleeve are sequentially disposed between the protective covers and the double-row roller chain. The elastic plate is disposed between the inner sleeve and the outer sleeve.
[0010] Furthermore, the elastic plates are arranged in a ring, and the included angle between two adjacent elastic plates is equal.
[0011] The beneficial effects of adopting the above-mentioned further solution are: under the action of the elastic plate, the inner sleeve is assisted in limiting its movement, preventing the inner sleeve from expanding outward during normal operation, which would cause the double-row roller chain and ratchet to loosen. When the coupling is about to experience overload, the double-row roller chain, under the action of centrifugal force, squeezes the inner sleeve, causing the inner sleeve to expand outward, thus reserving space for the deformation of the double-row roller chain.
[0012] Furthermore, both of the protective covers are provided with air inlets, which are arranged in a ring shape, and the included angle between two adjacent air inlets is equal.
[0013] The beneficial effect of adopting the above-mentioned further solution is that, under the action of the air inlet, external air enters into the protective cover, which dissipates heat and cools the inside of the protective cover, and avoids overheating of the parts inside the protective cover during rotation, thus preventing overload.
[0014] Furthermore, the protective cover is provided with a heat sink on the air inlet hole, and the heat sink is provided with an air inlet that communicates with the air inlet hole.
[0015] The beneficial effect of adopting the above-mentioned further solution is that, under the action of the heat sink, the contact surface with the outside air can be increased during the rotation of the protective cover, so that the outside air can be introduced through the air inlet during the rotation of the protective cover, thereby improving the heat dissipation effect.
[0016] Furthermore, ratchet teeth are provided on the sides of the two half-couplings that are close to each other, and the half-couplings are connected to the double-row roller chain through the ratchet teeth.
[0017] The beneficial effect of adopting the above-mentioned further solution is that, under the action of the ratchet, the two half-couplings are engaged with the double-row roller chain, and under the action of the double-row roller chain, the two half-couplings achieve a linkage effect.
[0018] Furthermore, each of the two half-couplings has a locking seat at its far end.
[0019] The beneficial effect of adopting the above-mentioned further solution is that, in actual use, the snap-fit seat can be made to match the model of the linkage device shaft, so as to fix the two half-couplings between the equipment.
[0020] Furthermore, a fixing bolt is provided through the two protective covers, the fixing bolts are distributed in a ring, and the included angle between two adjacent fixing bolts is equal.
[0021] The beneficial effect of adopting the above-mentioned further solution is that, under the action of the fixing bolt, the two protective covers are limited, preventing them from separating during use, thereby improving the stability of the protective covers during use.
[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0023] 1. In this utility model, the protective cover protects the double-row roller chain, preventing external dust from entering and causing the ratchet teeth to jam. Furthermore, the inner sleeve, elastic plate, and outer sleeve limit the movement of the double-row roller chain. When the coupling assembly rotates normally, the double-row roller chain is engaged inside the inner sleeve, supported by the elastic plate to prevent expansion and deformation of the double-row roller chain. When the coupling assembly is about to overload, centrifugal force causes the double-row roller chain to loosen and expand, squeezing the inner sleeve and deforming the elastic plate, providing space for the double-row roller chain to expand. When the double-row roller chain expands and deforms, it dislocates from the two ratchet teeth, immediately separating the double-row roller chain from the half-coupling. This effectively prevents the double-row roller chain from breaking under overload conditions, improving its service life.
[0024] 2. In this utility model, under the action of the heat sink, the contact surface with the outside air can be increased during the rotation of the protective cover. During the rotation of the protective cover, the outside air is introduced into the interior of the protective cover through the air inlet, so as to dissipate heat and cool down the interior of the protective cover and avoid overheating of the internal parts of the protective cover during the rotation process, which would lead to overload. Attached Figure Description
[0025] Figure 1 This is a front view of an overload-proof safety coupling according to this utility model;
[0026] Figure 2 This is an exploded view of an overload-proof safety coupling according to the present invention;
[0027] Figure 3 This is an exploded view of the coupling assembly in the overload protection safety coupling of this utility model;
[0028] Figure 4 This is an exploded view of the overload protection component in an overload protection safety coupling of this utility model.
[0029] Figure Labels
[0030] 1. Coupling assembly; 11. Half coupling; 111. Snap-fit seat; 112. Ratchet; 12. Double-row roller chain;
[0031] 2. Overload protection components; 21. Protective cover; 211. Fixing bolt; 212. Air inlet; 22. Inner sleeve; 221. Elastic plate; 222. Outer sleeve; 23. Heat sink; 231. Air inlet. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] like Figure 1-4 As shown, this utility model provides a technical solution: an overload-resistant safety coupling, comprising:
[0034] The coupling assembly 1 consists of two half-couplings 11 and a double-row roller chain 12, with the double-row roller chain 12 positioned at one end of the two half-couplings 11 that is close to each other.
[0035] The overload protection component 2 consists of two protective covers 21 positioned on both sides of the double-row roller chain 12. Between the protective cover 21 and the double-row roller chain 12, an inner sleeve 22, a spring plate 221, and an outer sleeve 222 are sequentially arranged. The spring plates 221 are positioned between the inner sleeve 22 and the outer sleeve 222, arranged in a ring shape, with equal included angles between adjacent spring plates 221. Both half-couplings 11 have ratchet teeth 112 on their closest sides, allowing the half-couplings 11 to mesh with the double-row roller chain 12. Under the action of the protective covers 21, the double-row roller chain 12 is protected, preventing external dust from entering and causing the ratchet teeth 112 to jam. Further protection is provided by the inner sleeve 22 and the spring plate 221... Under the action of the outer sleeve 222, the double-row roller chain 12 is limited. When the coupling assembly 1 rotates normally, the double-row roller chain 12 is engaged inside the inner sleeve 22. The inner sleeve 22 is supported by the elastic plate 221 to prevent the expansion of the inner sleeve 22 from causing deformation of the double-row roller chain 12. When the coupling assembly 1 is about to be overloaded, the double-row roller chain 12 loosens and expands under the action of centrifugal force, squeezing the inner sleeve 22 and causing the elastic plate 221 to deform, reserving room for the expansion of the double-row roller chain 12. At this time, after the double-row roller chain 12 expands and deforms, it is misaligned and disengaged from the two ratchet teeth 112, and the double-row roller chain 12 is separated from the half coupling 11 in time. This can effectively prevent the double-row roller chain 12 from breaking when the coupling assembly 1 is overloaded and improve its service life.
[0036] Furthermore, such as Figure 2 - Figure 4As shown: Both protective covers 21 are provided with air inlets 212, which are arranged in a ring shape, and the included angle between two adjacent air inlets 212 is equal. A heat sink 23 is provided on the protective cover 21 at the air inlet 212. The heat sink 23 is provided with an air inlet 231 that communicates with the air inlet 212. Under the action of the heat sink 23, the contact surface with the outside air is increased through the heat sink 23 during the rotation of the protective cover 21. During the rotation of the protective cover 21, the outside air is introduced into the interior of the protective cover 21 through the air inlet 231 and the air inlet 212, so as to dissipate heat and cool down the interior of the protective cover 21 and prevent the internal parts of the protective cover 21 from overheating and causing overload during the rotation.
[0037] The above solutions still have issues with the installation of the half-coupling 11 and the equipment, such as... Figure 3 As shown: In this scheme, each of the two half-couplings 11 is provided with a snap-fit seat 111 at the ends that are far apart from each other. In actual use, the snap-fit seat 111 can be made to match the model of the shaft of the linkage device so as to fix the two half-couplings 11 between the equipment.
[0038] The above solution also has the problem of installation and disassembly between the two protective covers 21, such as... Figure 4 As shown: In this scheme, a fixing bolt 211 is installed between the two protective covers 21. The fixing bolts 211 are arranged in a ring, and the included angle between two adjacent fixing bolts 211 is equal. Under the action of the fixing bolts 211, the two protective covers 21 are limited to avoid separation between the two protective covers 21 during use, thereby improving the stability of the protective covers 21 during use.
[0039] Working principle:
[0040] like Figure 1-4 As shown, firstly, the two half-couplings 11 are connected and fixed to the output shaft or input shaft of the equipment respectively through the snap-fit seat 111. After the fixing is completed, the equipment is turned on to drive the coupling assembly 1 to rotate. At this time, when the protective cover 21 is rotating, the external air enters the interior of the protective cover 21 through the air inlet 231 under the action of the heat sink 23, and heats up and cools the interior to avoid overheating and overload of the double-row roller chain 12. When the double-row roller chain 12 is about to be overloaded, the double-row roller chain 12 loosens and expands outward, squeezing the inner sleeve 22, causing the elastic plate 221 to deform, reserving space for the expansion of the double-row roller chain 12. After the double-row roller chain 12 deforms and expands, it is displaced from the ratchet 112 to avoid the double-row roller chain 12 from breaking and being damaged.
[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An overload safety coupling comprising, The utility model relates to a kind of overloading prevention assembly and coupling assembly, including: Coupling assembly (1), the coupling assembly (1) is made of two half-couplings (11) and double-row roller chain (12), double-row roller chain (12) is arranged at the end of two half-couplings (11) close to each other; Anti-overload assembly (2), the anti-overload assembly (2) is made of two protective covers (21) arranged on the both sides of double-row roller chain (12), and the protective cover (21) and double-row roller chain (12) are sequentially provided with inner sleeve (22), elastic plate (221), outer sleeve (222) between them, the elastic plate (221) is arranged between inner sleeve (22) and outer sleeve (222).
2. An overload safety coupling according to claim 1, characterised in that: The elastic plate (221) is annularly distributed, and the included angle between adjacent two elastic plates (221) is equal.
3. An overload safety coupling according to claim 1, wherein: Two protective covers (21) are provided with air inlet hole (212) on them, the air inlet hole (212) is annularly distributed, and the included angle between adjacent two air inlet holes (212) is equal.
4. An overload safety coupling according to claim 3, wherein: The protective cover (21) is provided with heat dissipation seat (23) on air inlet hole (212), and the heat dissipation seat (23) is provided with air inlet (231) communicated with air inlet hole (212).
5. An overload safety coupling according to claim 1, wherein: Two half-couplings (11) are provided with ratchet (112) on the side close to each other, and the half-coupling (11) is connected by meshing between ratchet (112) and double-row roller chain (12).
6. An overload safety coupling according to claim 1, wherein: Two half-couplings (11) are provided with clamping seat (111) on the end away from each other.
7. An overload safety coupling according to claim 1, wherein: Two protective covers (21) are provided with fixing bolt (211) between them, the fixing bolt (211) is annularly distributed, and the included angle between adjacent two fixing bolts (211) is equal.