Coupling with brake

Abstract

The utility model belongs to mechanical transmission auxiliary equipment technical field relates to a coupling with brake braking, including drive motor drive end passes through brake coupling and connects bearing box one end portion, and bearing box other end portion links to each other with machine head, brake coupling includes coupling brake end and coupling non -brake end, coupling brake end can be detached and installed in bearing box drive end, and coupling non -brake end links to each other with drive motor, and coupling brake end flange connects coupling non -brake end, and coupling brake end is external to brake. The utility model discloses a coupling brake end, removes and increases brake device, the influence to the main shaft, makes the design more convenient, and high -efficient transmission is passed to the transmission system, reduces the torque loss caused by the deformation of intermediate component etc., ensures the brake reliability, reduces the risk of impeller reverse, and effectively reduces the transformation cost, effectively solves the industry pain point such as the large inertia of ventilating fan shutdown, the high risk of impeller reverse, the conventional brake device reform difficulty.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission auxiliary equipment technology, and in particular to a coupling with brake. Background Technology

[0002] During the operation and maintenance of ventilation equipment, shutdown and inspection are crucial for ensuring the long-term stable operation of the equipment. Due to the inertia of the fan impeller during rotation, it often takes a long time to completely stop the rotation after the equipment is shut down, usually up to an hour. The long shutdown waiting process greatly slows down the maintenance progress and reduces the overall work efficiency. In addition, some on-site system pipelines have no valves or the valves are not sealed properly. Under such circumstances, gas in the pipeline is prone to backflow after shutdown, which in turn causes the impeller to rotate in reverse.

[0003] Reversing the impeller not only damages the ventilation equipment itself, affecting its service life and performance, but also poses a great safety hazard to maintenance work, seriously threatening the personal safety of maintenance personnel.

[0004] Given the above problems, it is particularly necessary to equip the ventilation fan with a braking device. The braking device can effectively fix the rotor, prevent the impeller from reversing, and ensure the safety and efficiency of maintenance work. However, conventional braking devices on the market have obvious limitations. They usually require the drive shaft to have a dedicated brake disc or brake wheel. If a brake disc or brake wheel is to be added, the conventional practice is to lengthen the drive shaft. However, lengthening the drive shaft will reduce the safety factor of the shaft.

[0005] Secondly, some users did not consider adding a braking device initially, but later wanted to add one. However, there was insufficient space on the drive shaft to install brake discs or brake wheels, making the modification difficult. To solve this modification and design difficulty, this paper proposes a structure that can solve this problem. Utility Model Content

[0006] To address the technical problem of excessively long downtime caused by inertia in existing ventilators, this invention provides a coupling with a brake.

[0007] The technical solution of this utility model is achieved through the following scheme: a coupling with brake, including a drive motor, a brake coupling, a bearing housing and a machine head, wherein the drive end of the drive motor is connected to one end of the bearing housing through the brake coupling, and the other end of the bearing housing is connected to the machine head; The brake coupling includes a brake end and a non-brake end. The brake end is detachably mounted on the transmission end of the bearing housing. The non-brake end is connected to the drive motor. The brake end is flange-connected to the non-brake end. An external brake is connected to the brake end.

[0008] By using the above technical solutions, the impact of adding a braking device on the main shaft is eliminated through the coupling braking end, making the design more convenient and efficient in transmitting torque to the transmission system. This reduces torque loss caused by deformation of intermediate components, ensures braking reliability, reduces the risk of impeller reversal, and effectively reduces the cost of modification. It effectively solves industry pain points such as large inertia when the fan stops, high risk of impeller reversal, and difficulty in modifying conventional braking devices.

[0009] Preferably, the coupling braking end includes a drum brake wheel flange and drum brake pads, with the drum brake pads symmetrically disposed on the outer surface of the drum brake wheel flange. The drum brake wheel flange includes a wheel flange part and a drive shaft sleeve. The wheel flange part is sleeved on one end of the drive shaft sleeve, and the drum brake pads are symmetrically arranged on the radial side of the wheel flange part. The wheel flange part and the drive shaft sleeve are integrally constructed.

[0010] Preferably, the drum brake pads are connected to an external brake, the wheel flange is screwed to the non-braking end of the coupling, and the drive shaft is keyed to the bearing housing drive shaft.

[0011] Preferably, the braking end of the coupling includes a disc brake flange and a disc brake pad, wherein the disc brake pad is symmetrically clamped on the disc brake flange.

[0012] Preferably, the disc brake disc flange includes a coupling drive unit and a flange extension disc. The flange extension disc is sleeved on the outer ring end face of the coupling drive unit flange, and the disc brake pads are symmetrically clamped on the flange extension disc. The flange extension disc and the coupling drive unit are integrally constructed.

[0013] Preferably, one end of the transmission part of the coupling is flanged and connected to the non-braking end of the coupling, and the other end of the transmission part of the coupling is keyed and connected to the bearing housing drive shaft, and the disc brake pad is connected to an external brake.

[0014] In summary, this utility model has the following beneficial effects: 1. This utility model eliminates the impact of adding a braking device on the main shaft by using the coupling braking end, making the design more convenient and efficiently transmitting torque to the transmission system. It reduces torque loss caused by deformation of intermediate components, ensures braking reliability, reduces the risk of impeller reversal, and effectively reduces the modification cost. It effectively solves industry pain points such as large inertia when the fan stops, high risk of impeller reversal, and difficulty in modifying conventional braking devices.

[0015] 2. The use of both drum brake and disc brake allows this coupling with brake to be applied to a wider range of ventilation equipment. When braking the ventilation fan, it can effectively suppress the rotation of the impeller, prevent the impeller from continuing to rotate or reverse due to inertia, avoid damage to the ventilation equipment itself, and extend the service life of the equipment. Users can flexibly choose between drum brake or disc brake structures according to the specific working conditions, performance requirements, and usage environment of the ventilation fan to meet different braking needs.

[0016] 3. Both the wheel flange of the drum brake wheel flange and the flange extension disc of the disc brake flange are modifications to the coupling structure flange, making the entire coupling braking end more compact in axial and radial space, reducing additional space occupation, lowering manufacturing costs, and ensuring good compatibility with the overall coupling structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly structure of this utility model; Figure 2 This is a schematic diagram of the drum brake structure of the coupling brake flange of this utility model; Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure from the AA perspective; Figure 4 This is a schematic diagram of the disc brake structure of the coupling brake flange of this utility model; Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure from a BB perspective.

[0018] Explanation of reference numerals in the attached drawings: 1. Drive motor; 2. Non-braking end of coupling; 3. Braking end of coupling; 31. Drum brake wheel flange; 311. Wheel flange section; 312. Drive shaft sleeve; 32. Drum brake pad; 33. Disc brake disc flange; 331. Coupling drive section; 332. Flange extension disc; 34. Disc brake pad; 4. Bearing housing; 5. Machine head. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: A coupling with brake, such as Figures 1-3As shown, the device includes a drive motor 1, a brake coupling, a bearing housing 4, and a machine head 5. The drive end of the drive motor 1 is connected to one end of the bearing housing 4 via the brake coupling, and the other end of the bearing housing 4 is connected to the machine head 5. The brake coupling includes a brake end 3 and a non-brake end 2. The brake end 3 is detachably installed on the drive end of the bearing housing 4. The non-brake end 2 is connected to the drive motor 1. The brake end 3 is flange-connected to the non-brake end 2. The brake end 3 is externally connected to a brake. The coupling generally consists of two parts, one on the left and one on the right. The single-sided coupling structure connected to the bearing housing 4 is combined with the braking structure to form the brake end 3. The braking structure is directly integrated into the brake end 3, and the braking function acts directly on the coupling. No additional transmission components (such as brake discs, brake shafts, etc.) are required, reducing intermediate links, shortening the power transmission path, reducing energy loss, reducing the number of parts and material usage, and eliminating the need to manufacture brake discs or brake shafts separately, thus reducing processing costs.

[0022] Based on existing braking methods, brakes can be divided into drum brakes and disc brakes. Therefore, the coupling structure is modified accordingly based on the characteristics of these two types of brakes. Drum brakes have the characteristics of large braking force and smooth braking, making them suitable for use in ventilation fan scenarios that require large braking force and relatively stable operating conditions. They can stop the impeller from rotating in a short time thanks to their large braking torque. Disc brakes, on the other hand, have advantages such as good heat dissipation and fast braking response. For ventilation fans that require high braking response speed and frequently start and stop during operation, disc brakes can quickly generate braking force to suppress the rotation of the impeller in time and avoid adverse effects caused by inertia.

[0023] The coupling braking end 3 includes a drum brake wheel flange 31 and drum brake pads 32, with the drum brake pads 32 symmetrically disposed on the outer surface of the drum brake wheel flange 31. The drum brake wheel flange 31 includes a wheel flange portion 311 and a drive shaft sleeve 312, with the wheel flange portion 311 fitted onto one end of the drive shaft sleeve 312. The drum brake pads 32 are symmetrically disposed on the radial side of the wheel flange portion 311. The wheel flange portion 311 and the drive shaft sleeve 312 are integrally constructed. The larger the contact area between the drum brake wheel and the brake pads, the less friction... The greater the friction, the better the braking effect. The brake wheel of a drum brake must have a certain width. Therefore, for drum brake braking, the structure of a single-sided coupling is combined with the brake wheel, that is, the coupling flange is changed to a wheel type. The wheel type flange 311 is equivalent to the combined drum brake brake wheel. Two drum brake pads 32 are symmetrically arranged on both radial sides of the wheel type flange 311, which is a standard drum brake structure. They are used to contact the outer surface of the wheel type flange 311 and apply braking action to the rotating mechanism through frictional resistance.

[0024] like Figure 3As shown, the wheel flange 311 itself is a recessed cylindrical shape. The wheel flange 311 is sleeved on the drive shaft sleeve 312 in the opposite direction. The integral molding ensures structural strength and coaxiality, forming a mushroom shape with a large axial dimension. The outer surface of the wheel flange 311 (i.e. the surface in contact with the brake pad) has a large width, which is conducive to enhancing friction.

[0025] The drum brake pad 32 is an external brake. The wheel flange 311 is screwed to the non-braking end 2 of the coupling. Multiple bolts fix the two flanges to achieve a tight connection between the flanges at both ends. The drive shaft sleeve 312 is keyed to the bearing housing 4 drive shaft to effectively transmit torque and bear axial and radial loads.

[0026] Neither the drum brake pad 32 nor the disc brake pad 34 is usually fixed to the coupling. Instead, their outer surfaces are pressed together by an external brake to achieve controllable braking.

[0027] All parts and equipment use conventional models in the existing technology. In addition, the circuit connection and communication connection adopt conventional connection methods in the existing technology, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art, such as brakes (such as brake calipers or hydraulic / pneumatic brakes). The function of the brake is to drive the brake pads through hydraulic or pneumatic devices to realize remote control and rapid response, and drive the brake pads to brake the coupling.

[0028] Working principle: The drum brake principle mainly relies on the friction between the drum brake pads 32 and the wheel flange portion 311 of the drum brake wheel flange 31 to generate braking force. When the machine needs to be stopped, the operator activates the brake. Under the action of the brake, the drum brake pads 32 on both radial sides of the wheel flange portion 311 press against the brake wheel. When the two come into contact, friction is generated. As the force of the adjusting device continues to increase, the friction gradually increases until the coupling and the rotor connected to it stop rotating.

[0029] Example 2: A coupling with brake, such as Figure 1 , Figure 4 and Figure 5As shown, the coupling braking end 3 includes a disc brake flange 33 and a disc brake pad 34. The disc brake pad 34 is symmetrically clamped on the disc brake flange 33. The disc brake flange 33 includes a coupling drive part 331 and a flange extension disc 332. The flange extension disc 332 is sleeved on the outer ring end face of the flange of the coupling drive part 331. The disc brake pad 34 is symmetrically clamped on the flange extension disc 332. The flange extension disc 332 and the coupling drive part 331 are integrally constructed, i.e., integrally cast or machined, to ensure concentricity and structural strength. This design enables the disc brake and drum brake to operate simultaneously. Both operate on the same principle of friction braking. Unlike drum brakes, disc brake pads 34 do not enclose the rotating body but instead clamp the rotating disc brake disc flanges 33 from both sides. For disc brakes, based on the lever principle, the larger the diameter of the brake disc, the larger the braking radius and the better the braking effect. Therefore, the structure of the single-sided coupling is combined with the disc, that is, the outer circle of the coupling flange is increased to replace the traditional independent disc brake disc. This is the disc brake disc flange 33 formed by the flange extension disc 332 and the coupling transmission part 331 flange. The disc brake disc flange 33 has a large outer diameter and axial thickness. The flange extension disc 332 is the part that actually contacts the brake pad and generates friction.

[0030] One end of the coupling transmission part 331 is flanged and connected to the non-braking end 2 of the coupling. The central area of ​​the coupling transmission part 331 is the transmission part connection section. Multiple screw holes are screwed and fixed to the non-braking end 2 of the coupling. The other end of the coupling transmission part 331 is keyed and connected to the drive shaft of the bearing housing 4. The disc brake pad 34 is connected to the external brake.

[0031] Working principle: The basic braking principle of disc brake is also friction braking. When the machine is stopped and working, there is a set of brake pads on each side of the flange extension disc 332 of the disc brake disc flange 33. Under the pressure of the brake, the disc brake disc flange 33 is clamped. As the brake force continues to increase, the friction gradually increases until the coupling and the rotor connected to it stop rotating.

[0032] 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 or equivalent changes 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. A coupling with a brake, characterized in that: It includes a drive motor (1), a brake coupling, a bearing housing (4) and a machine head (5). The drive end of the drive motor (1) is connected to one end of the bearing housing (4) through the brake coupling, and the other end of the bearing housing (4) is connected to the machine head (5). The brake coupling includes a brake end (3) and a non-brake end (2). The brake end (3) is detachably installed on the transmission end of the bearing housing (4). The non-brake end (2) is connected to the drive motor (1). The brake end (3) is flange-connected to the non-brake end (2). The brake end (3) is externally connected to a brake.

2. The coupling with brake according to claim 1, characterized in that: The coupling braking end (3) includes a drum brake wheel flange (31) and a drum brake pad (32), and the drum brake pad (32) is symmetrically arranged on the outer surface of the drum brake wheel flange (31). The drum brake wheel flange (31) includes a wheel flange part (311) and a drive shaft sleeve (312). The wheel flange part (311) is sleeved on one end of the drive shaft sleeve (312). The drum brake pads (32) are symmetrically arranged on the radial side of the wheel flange part (311). The wheel flange part (311) and the drive shaft sleeve (312) are integrally constructed.

3. The coupling with brake according to claim 2, characterized in that: The drum brake pad (32) is connected to an external brake, the wheel flange (311) is screwed to the non-braking end (2) of the coupling, and the transmission shaft sleeve (312) is keyed to the transmission shaft of the bearing housing (4).

4. The coupling with brake according to claim 1, characterized in that: The coupling braking end (3) includes a disc brake flange (33) and a disc brake pad (34), the disc brake pad (34) being symmetrically clamped on the disc brake flange (33).

5. The coupling with brake according to claim 4, characterized in that: The disc brake disc flange (33) includes a coupling drive unit (331) and a flange extension disc (332). The flange extension disc (332) is sleeved on the outer ring end face of the flange of the coupling drive unit (331). The disc brake pad (34) is symmetrically clamped on the flange extension disc (332). The flange extension disc (332) and the coupling drive unit (331) are integrally constructed.

6. The coupling with brake according to claim 5, characterized in that: One end of the coupling transmission part (331) is flanged and connected to the non-braking end (2) of the coupling, and the other end of the coupling transmission part (331) is keyed and connected to the transmission shaft of the bearing housing (4). The disc brake pad (34) is connected to an external brake.

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