Flexible coupling for pipe gallery fan

Abstract

The utility model relates to the technical field of pipe gallery draught fans, and discloses a flexible coupler for a pipe gallery draught fan, which comprises a fixed seat and a motor seat, fan blades are rotatably mounted in the fixed seat, a rotating shaft is fixedly mounted on the left side of the fan blades, a motor is fixedly mounted on the top of the motor seat, and the rotating shaft is fixedly mounted on the left side of the motor seat. The motor base is located below the fixing base. And connecting sleeves are fixedly mounted at an output shaft of the motor and one end of the rotating shaft. One group of driving discs is driven to rotate through operation of the motor, when the motor operates, the two groups of driving discs start to rotate through the characteristics of materials of the multiple groups of flexible rubber belts, torque is transmitted for rotation of the fan blades, and compared with a traditional device, through the design of the multiple groups of flexible rubber belts, when the motor is started and stopped, the fan blades are driven to rotate. The flexible rubber belt can absorb large instantaneous torque generated by the output shaft of the motor, the fan blades are further protected, and the service life of the fan blades is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pipe gallery fan technology, and more specifically, to a flexible coupling for pipe gallery fans. Background Technology

[0002] Utility tunnels are integrated underground or above-ground passages used to centrally lay power, communication, water supply and drainage, gas and other pipelines, facilitating unified management and maintenance, reducing repeated excavation, and improving the efficiency of urban space utilization. The ventilation fans in the utility tunnels are the core equipment of the ventilation system, used to maintain air circulation, exhaust harmful gases, regulate temperature and humidity, ensure the normal operation of pipelines and personnel safety, and in emergencies, the fans can also assist in smoke extraction and ensure unobstructed evacuation routes.

[0003] The interior of the utility tunnel is relatively enclosed, which can easily accumulate harmful gases or moisture. In order to ensure that the air quality and temperature and humidity inside the tunnel are within a safe range, the fans need to be run regularly for ventilation. Typically, they are started twice an hour to meet daily ventilation needs. This means that the utility tunnel fans need to be started and stopped multiple times a day under normal circumstances. The instantaneous torque generated when the motor starts is large, and frequent start-stop will directly transmit the torque to the impeller, causing blade fatigue or even damage and reducing the service life of the fan. Therefore, a flexible coupling is needed to protect the fan blades and impeller. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a flexible coupling for pipe gallery fans, which has the advantages of mitigating impact and protecting the blades.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible coupling for a pipe gallery fan, comprising a fixed base and a motor base, wherein a fan blade is rotatably mounted inside the fixed base, a rotating shaft is fixedly mounted below the fan blade, and a motor is fixedly mounted inside the motor base, and the motor base is located below the fixed base;

[0006] A connecting sleeve is fixedly installed at one end of the output shaft and the rotating shaft of the motor, and a drive disk is fixedly installed at the other end of the connecting sleeve. A slot is opened on the outer wall of the drive disk, and the slot is circumferentially set on the edge of the outer wall of the drive disk. A positioning sleeve is provided inside each set of slots, and a flexible rubber strip is provided inside the positioning sleeve. Mounting holes are opened at both the upper and lower ends of the flexible rubber strip. The two sets of drive disks are flexibly connected by the flexible rubber strip.

[0007] As a preferred embodiment of this utility model, a fastening sleeve is fixedly installed on the outer wall of the drive disk, and the fastening sleeve and the slot are positioned correspondingly.

[0008] As a preferred technical solution of this utility model, it also includes a fastening bolt, one end of which passes through the positioning sleeve and the mounting hole and is threadedly connected to the fastening sleeve.

[0009] As a preferred technical solution of this utility model, the positioning sleeve is welded from iron sheets, and the positioning sleeve has locking holes on both sides.

[0010] As a preferred technical solution of this utility model, telescopic grooves are provided on both the left and right sides of the inner wall of the slot, the telescopic grooves and the slot holes are positioned correspondingly, and a limit head is movably installed inside the telescopic groove.

[0011] As a preferred technical solution of this utility model, one end of the limiting head is elastically connected to the inner wall of the telescopic groove by a compression spring, and the other end of the limiting head is dome-shaped and abuts against the card hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses the operation of a motor to drive one set of drive discs to rotate. By utilizing the inherent properties of multiple sets of flexible rubber belts, both sets of drive discs start to rotate when the motor is running, transmitting torque to the rotation of the fan blades. Compared with traditional devices, this device, through the design of multiple sets of flexible rubber belts, allows the flexible rubber belts to absorb the large instantaneous torque generated by the motor output shaft when the motor starts and stops, further protecting the fan blades, increasing their service life, and also reducing vibration and noise, thereby improving the reliability and performance of the pipe gallery fan.

[0014] 2. This utility model, through the design of the positioning sleeve, allows workers to fasten the positioning sleeve and the flexible rubber belt inside the slot by tightening the bolts and the sleeve. Furthermore, when the flexible rubber belt rotates, the positioning sleeve not only provides a uniform clamping force to the flexible rubber belt, ensuring its stability, but also reduces the stress on the mounting hole when the drive disc rotates, alleviating the risk of tearing of the flexible rubber belt and improving its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of the rotating shaft, drive disk, and motor of this utility model;

[0017] Figure 3 This is a schematic diagram of the drive disk structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the flexible rubber belt structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the disassembled structure of the drive disk and positioning sleeve of this utility model;

[0020] Figure 6 This is a schematic diagram of the limiting head structure of this utility model.

[0021] In the diagram: 1. Fixed base; 2. Motor base; 3. Motor; 4. Fan blade; 5. Rotating shaft; 6. Connecting sleeve; 7. Drive disc; 8. Fastening sleeve; 9. Fastening bolt; 10. Slot; 11. Positioning sleeve; 12. Flexible rubber belt; 13. Mounting hole; 14. Locking hole; 15. Telescopic groove; 16. Limiting head; 17. Compression spring. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 6 As shown, this utility model provides a flexible coupling for a pipe gallery fan, including a fixed base 1 and a motor base 2. A fan blade 4 is rotatably mounted inside the fixed base 1, and a rotating shaft 5 is fixedly mounted at the bottom of the fan blade 4. A motor 3 is fixedly mounted at the top of the motor base 2, and the motor base 2 is located below the fixed base 1.

[0024] A connecting sleeve 6 is fixedly installed at one end of the output shaft of motor 3 and the rotating shaft 5. A drive disk 7 is fixedly installed at the other end of the connecting sleeve 6. A slot 10 is opened on the outer wall of the drive disk 7. The slot 10 is circumferentially set on the edge of the outer wall of the drive disk 7. A positioning sleeve 11 is set inside each set of slots 10. A flexible rubber strip 12 is set inside the positioning sleeve 11. Mounting holes 13 are opened at both the upper and lower ends of the flexible rubber strip 12. The two sets of drive disks 7 are flexibly connected by the flexible rubber strip 12.

[0025] First, the workers assemble the fixed base 1 and the motor base 2 in the appropriate positions in the pipe gallery. Then, they install the flexible rubber belt 12. First, the workers insert the positioning sleeve 11 into the slot 10. When the positioning sleeve 11 is inserted, the limiting head 16 will be squeezed into the telescopic groove 15 by the outer wall of the positioning sleeve 11 due to its dome-shaped feature. After the positioning sleeve 11 is fully engaged in the slot 10, the telescopic groove 15 and the locking hole 14 are aligned, allowing the limiting head 16 to enter the locking hole 14 through the elastic potential energy of the compression spring 17. At this time, the limiting head 16 and the locking hole 14 abut against each other to ensure the stability of the positioning sleeve 11 when engaged. Then, the workers insert both ends of the flexible rubber belt 12 into the positioning sleeve 11 respectively. Then, the threaded end of the fastening bolt 9 passes through the positioning sleeve 11 and the mounting hole 13. Finally, the fastening bolt 9 is rotated to lock the threads of the fastening bolt 9 and the fastening sleeve 8. The workers can install multiple sets of flexible rubber belts 12 in sequence according to the above steps. The flexible rubber belt 12 can also be replaced after long-term use and wear.

[0026] When staff need to ventilate the pipe gallery, they start motor 3. The output shaft of motor 3 drives the connecting sleeve 6 to rotate, and then the drive disc 7 starts to rotate. Since the two sets of drive discs 7 are flexibly connected by multiple sets of flexible rubber belts 12, the flexible rubber belts 12 will twist when the drive disc 7 rotates. Through its own material properties, it absorbs the instantaneous torque generated when the motor 3 is turned on. Furthermore, as the motor 3 operates, since the two sets of drive discs 7 are connected to each other by the flexible rubber belts 12, both sets of drive discs 7 start to rotate, and drive the fan blades 4 to rotate, thus starting the ventilation operation.

[0027] The motor 3 drives one of the drive discs 7 to rotate. Due to the properties of the material of the multiple flexible rubber belts 12, both drive discs 7 start to rotate when the motor 3 is running, transmitting torque to the rotation of the fan blades 4. Compared with traditional devices, this device, through the design of multiple flexible rubber belts 12, allows the flexible rubber belts 12 to absorb the large instantaneous torque generated by the output shaft of the motor 3 when the motor 3 is started and stopped, further protecting the fan blades 4 and improving the service life of the fan blades 4.

[0028] Among them, a fastening sleeve 8 is fixedly installed on the outer wall of the drive disk 7, and the fastening sleeve 8 and the slot 10 are in corresponding positions.

[0029] It also includes a fastening bolt 9, one end of which passes through the positioning sleeve 11 and the mounting hole 13 and is threadedly connected to the fastening sleeve 8.

[0030] The positioning sleeve 11 is made of welded iron sheet, and the positioning sleeve 11 has a locking hole 14 on both the left and right sides.

[0031] When the positioning sleeve 11 is inserted, the limiting head 16 will be squeezed into the telescopic groove 15 by the outer wall of the positioning sleeve 11 due to its dome-shaped feature. After the positioning sleeve 11 is fully engaged in the slot 10, the telescopic groove 15 and the slot 14 are aligned, so that the limiting head 16 enters the slot 14 through the elastic potential energy of the compression spring 17. At this time, the limiting head 16 and the slot 14 abut against each other to ensure the stability of the positioning sleeve 11 when engaged.

[0032] The card slot 10 has expansion grooves 15 on both the left and right sides of its inner wall. The expansion grooves 15 and the card holes 14 are positioned correspondingly. A limit head 16 is installed inside the expansion groove 15.

[0033] One end of the limiting head 16 is elastically connected to the inner wall of the telescopic groove 15 by a compression spring 17, and the other end of the limiting head 16 is dome-shaped and abuts against the locking hole 14.

[0034] The design of the positioning sleeve 11 allows the operator to fasten the positioning sleeve 11 and the flexible rubber belt 12 inside the slot 10 using the fastening bolt 9 and the fastening sleeve 8. This further ensures that when the flexible rubber belt 12 rotates, the positioning sleeve 11 not only provides a uniform clamping force to the flexible rubber belt 12, ensuring its stability, but also reduces the stress on the mounting hole 13 when the drive disc 7 rotates, alleviating the risk of tearing of the flexible rubber belt 12 and improving its service life.

[0035] Working principle and usage process of this utility model:

[0036] First, the workers assemble the fixed base 1 and the motor base 2 in the appropriate positions in the pipe gallery. Then, they install the flexible rubber belt 12. First, the workers insert the positioning sleeve 11 into the slot 10. When the positioning sleeve 11 is inserted, the limiting head 16 will be squeezed into the telescopic groove 15 by the outer wall of the positioning sleeve 11 due to its dome-shaped feature. After the positioning sleeve 11 is fully engaged in the slot 10, the telescopic groove 15 and the locking hole 14 are aligned, allowing the limiting head 16 to enter the locking hole 14 through the elastic potential energy of the compression spring 17. At this time, the limiting head 16 and the locking hole 14 abut against each other to ensure the stability of the positioning sleeve 11 when engaged. Then, the workers insert both ends of the flexible rubber belt 12 into the positioning sleeve 11 respectively. Then, the threaded end of the fastening bolt 9 passes through the positioning sleeve 11 and the mounting hole 13. Finally, the fastening bolt 9 is rotated to lock the threads of the fastening bolt 9 and the fastening sleeve 8. The workers can install multiple sets of flexible rubber belts 12 in sequence according to the above steps. The flexible rubber belt 12 can also be replaced after long-term use and wear.

[0037] When staff need to ventilate the pipe gallery, they start motor 3. The output shaft of motor 3 drives the connecting sleeve 6 to rotate, and then the drive disc 7 starts to rotate. Since the upper and lower drive discs 7 are flexibly connected by multiple sets of flexible rubber belts 12, the flexible rubber belts 12 will twist when the drive disc 7 rotates. Through its own material properties, it absorbs the instantaneous torque generated when the motor 3 is turned on. Furthermore, as the motor 3 operates, since the two sets of drive discs 7 are connected to each other by the flexible rubber belts 12, both sets of drive discs 7 start to rotate, and drive the fan blades 4 to rotate, thus starting the ventilation operation.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible coupling for pipe gallery fan comprising a fixed seat (1) and a motor seat (2), characterized in that: The inside of the fixed seat (1) is rotatably installed with a fan blade (4), the lower part of the fan blade (4) is fixedly installed with a rotating shaft (5), the inside of the motor seat (2) is fixedly installed with a motor (3), and the motor seat (2) is located below the fixed seat (1); The output shaft of the motor (3) and one end of the rotating shaft (5) are fixedly installed with a connecting sleeve (6), the other end of the connecting sleeve (6) is fixedly installed with a driving disc (7), the outer wall of the driving disc (7) is provided with a clamping groove (10), the clamping groove (10) is circumferentially arranged on the outer wall edge of the driving disc (7), each group of the clamping groove (10) is provided with a positioning sleeve (11) in the inside, and the inside of the positioning sleeve (11) is provided with a flexible rubber belt (12), the upper and lower ends of the flexible rubber belt (12) are provided with mounting holes (13), and two groups of the driving discs (7) are flexibly connected through the flexible rubber belt (12).

2. A flexible coupling for a pipe rack fan as defined in claim 1, wherein: The outer wall of the driving disc (7) is fixedly installed with a fastening sleeve (8), and the fastening sleeve (8) and the clamping groove (10) are located in corresponding positions.

3. A flexible coupling for a pipe rack fan as defined in claim 1, wherein: It also includes a fastening bolt (9), one end of the fastening bolt (9) penetrates the positioning sleeve (11) and the mounting hole (13) and is threadedly connected with the fastening sleeve (8).

4. A flexible coupling for a duct bank fan as defined in claim 1, wherein: The positioning sleeve (11) is welded by an iron sheet, and the two sides of the positioning sleeve (11) are provided with clamping holes (14).

5. A flexible coupling for use with a duct bank fan as defined in claim 1, wherein: The left and right sides of the inner wall of the clamping groove (10) are provided with expansion grooves (15), the expansion grooves (15) and the clamping holes (14) are located in corresponding positions, and the inside of the expansion groove (15) is movably installed with a limiting head (16).

6. A flexible coupling for a duct bank fan as defined in claim 5 wherein: One end of the limiting head (16) and the inner wall of the expansion groove (15) are elastically connected through a compression spring (17), the other end of the limiting head (16) is in the form of a dome and abuts against the clamping hole (14).

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