Brake device and air supply equipment

Abstract

The invention provides a braking device and air supply equipment, and the braking device comprises a support used for being arranged on a fan; the brake assembly is arranged on the support and has a starting state and a closing state; in the starting state, the execution end of the braking assembly abuts against a rotating shaft of the draught fan so as to apply braking force to the rotating shaft. In the closed state, the execution end of the brake assembly is separated from a rotating shaft of the fan; and the control assembly is connected to the brake assembly and used for controlling the brake assembly to be started after the brake assembly delays for a preset duration under the condition that the fan receives the shutdown instruction. The braking device can automatically brake the rotating shaft of the fan after the fan stops, so that reverse rotation of the rotating shaft of the fan is prevented or limited, the fan can be quickly recovered and started in the follow-up operation process, an operator does not need to disassemble and assemble a limiting part of the fan, the operation difficulty of limiting reverse rotation of the fan is reduced, and the working efficiency is improved. And the operation safety is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of ventilation technology, and in particular to a braking device and air supply equipment. Background Art

[0002] When a fan is stopped, it is susceptible to external airflow and reverse rotation, making it difficult to quickly restart the fan during subsequent operations, affecting its operating efficiency. In related technologies, operators typically install a stopper on the fan rotor after the fan stops to limit rotor rotation. When the fan is needed, the operator removes the stopper. However, this method is difficult to operate and carries the risk of injury. Summary of the Invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, according to a first aspect of an embodiment of the present disclosure, a braking device is provided, comprising:

[0005] A support, used for being arranged on the fan;

[0006] The brake assembly is disposed on the support, and has an activated state and a closed state. In the activated state, the actuator end of the brake assembly abuts against the rotating shaft of the fan to apply a braking force to the rotating shaft. In the closed state, the actuator end of the brake assembly is separated from the rotating shaft of the fan.

[0007] The control component is connected to the brake component and is used to control the brake component to start after a preset delay when the fan receives a stop command.

[0008] In one possible embodiment, the brake assembly includes:

[0009] A pneumatic actuator having a venting end and an actuating end;

[0010] An electrically controlled valve, used to connect or disconnect the air supply device and the ventilation end;

[0011] Among them, the electric control valve is connected to the control component, and the control component is used to control the electric control valve to delay for a preset time and then connect the air supply device and the ventilation end when the fan receives a shutdown command.

[0012] In a feasible embodiment, the pneumatic actuator includes:

[0013] a first brake pad formed with an actuating end;

[0014] a housing, the housing being formed with a venting end;

[0015] A partition is disposed in the shell, wherein a first plate side of the partition and the shell form an air cavity, the air cavity is connected to the vent end, a second plate side of the partition is away from the air cavity and is arranged toward the rotating shaft, and the partition is elastically deformable;

[0016] The first connecting rod is passed through the support and connected between the second plate side and the first brake pad. The first connecting rod is suitable for sliding relative to the support along the arrangement direction of the air cavity and the second plate side.

[0017] In a feasible embodiment, the pneumatic actuator further includes:

[0018] a second brake pad, formed with a contact end, the contact end being arranged opposite to the actuating end and being used to abut against the rotating shaft;

[0019] A mounting seat, the housing being arranged on the mounting seat;

[0020] The second connecting rod is passed through the support and connected between the mounting seat and the second brake pad. The second connecting rod is suitable for sliding relative to the support along the arrangement direction of the air cavity and the second plate side.

[0021] In a feasible embodiment, the pneumatic actuator further includes:

[0022] The first elastic member is connected between the mounting seat and the second plate side, and is used to apply an elastic force to the second plate side along a direction from the second plate side to the air cavity.

[0023] In a feasible embodiment, the pneumatic actuator further includes:

[0024] The second elastic member is connected between the second connecting rod and the support, and is used to apply an elastic force to the second connecting rod along the direction from the air cavity to the second plate side.

[0025] In a feasible embodiment, the first brake pad includes a first base plate and a first rubber pad, one side of the first base plate is connected to the first connecting rod, the first rubber pad is arranged on the other side of the first base plate, and the first rubber pad is formed with an execution end;

[0026] The second brake pad includes a second base plate and a second rubber pad. The second base plate is connected to the second connecting rod. The second rubber pad is arranged on the second base plate. The second rubber pad is formed with a contact end.

[0027] In a feasible embodiment, the electrically controlled valve has a first valve port, a second valve port, and a third valve port, wherein the first valve port is connected to the venting end, the second valve port is used to connect to the air supply device, and the third valve port is used to connect to the atmosphere, and the electrically controlled valve has a first working state and a second working state;

[0028] In the first working state, the first valve port and the second valve port are connected, and the third valve port is blocked;

[0029] In the second working state, the first valve port and the third valve port are connected, and the second valve port is blocked;

[0030] The control component is used to control the electric control valve to operate in the first working state after a preset delay when the fan receives a shutdown command, or to control the electric control valve to operate in the second working state when the fan receives a start command.

[0031] In a feasible implementation manner, the control component is further configured to control the brake component to close when the fan receives a start instruction.

[0032] According to a second aspect of an embodiment of the present disclosure, an air supply device is provided, comprising:

[0033] Fan;

[0034] For the braking device proposed in any one of the first aspects above, the support is provided on the fan.

[0035] The above description is only an overview of the technical solution provided by the present disclosure. In order to more clearly understand the technical means of the present disclosure, which can be implemented in accordance with the contents of the specification, and to make the features and effects of the present disclosure more obvious and easy to understand, the following specifically cites the implementation methods of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the exemplary embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0037] Figure 1 A schematic structural diagram of a braking device according to an embodiment of the present disclosure.

[0038] in, Figure 1 The corresponding relationship between the reference numerals and component names is as follows:

[0039] 10' rotating shaft; 10 braking device;

[0040] 100 supports; 200 brake components;

[0041] 210 pneumatic actuator; 220 electric control valve;

[0042] 211 first brake pad; 2111 first substrate; 2112 first rubber pad; 212 housing; 213 partition; 214 first connecting rod; 215 second brake pad; 2151 second substrate; 2152 second rubber pad; 216 mounting seat; 217 second connecting rod; 218 first elastic member; 219 second elastic member;

[0043] 201 actuator end; 202 contact end; 203 ventilation end; 204 air cavity;

[0044] 213a first plate side; 213b second plate side. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] like Figure 1 As shown, according to the first aspect of an embodiment of the present disclosure, a braking device 10 is proposed, comprising: a support 100 for being arranged on a fan; a brake assembly 200, arranged on the support 100, and the brake assembly 200 has an on state and a off state; in the on state, the execution end 201 of the brake assembly 200 abuts against the rotating shaft 10' of the fan to apply a braking force to the rotating shaft 10'; in the off state, the execution end 201 of the brake assembly 200 is separated from the rotating shaft 10' of the fan; a control assembly, connected to the brake assembly 200, for controlling the brake assembly 200 to start after a delay of a preset time when the fan receives a shutdown command.

[0047] The braking device 10 provided by the embodiment of the present disclosure includes the aforementioned support 100, a braking assembly 200 and a control assembly; wherein, the support 100 can be set on the fan in actual application, so that it can be in a position relatively close to the fan and be installed and fixed by the fan, and the braking assembly 200 is set on the support 100 and can be supported by the support 100; the braking assembly 200 has an execution end 201 and has an on state and a off state. When the braking assembly 200 is in the aforementioned on state, the execution end 201 can abut against the rotating shaft 10' of the aforementioned fan, thereby applying a braking force to the aforementioned rotating shaft 10' to limit the rotation of the aforementioned rotating shaft 10'. When the braking assembly 200 is in the aforementioned off state, the execution end 201 is separated from the aforementioned The rotating shaft 10', thereby the aforementioned braking force and rotation restriction are released; the control component can be connected to the aforementioned brake component 200, and can control the brake component 200 to start after a preset delay when the fan receives a stop command, that is, control the brake component 200 to enter the aforementioned start state; it can be understood that when the fan receives the aforementioned stop command, the fan's motor will stop driving the aforementioned rotating shaft 10', so that the rotation speed of the rotating shaft 10' will gradually decrease. In this case, by controlling the delayed start of the aforementioned brake component 200, the aforementioned execution end 201 can contact the aforementioned rotating shaft 10' and apply braking force to the aforementioned rotating shaft 10' when the rotation speed of the aforementioned rotating shaft 10' decreases to a certain level or reversal occurs.

[0048] Based on the above-mentioned setting, on the one hand, the braking device 10 can automatically brake the fan shaft 10' after the fan stops to limit or prevent the reversal of the fan shaft 10', which is beneficial to the rapid resumption of the fan in subsequent operations. There is no need for operators to disassemble and assemble the limit parts of the fan, which is beneficial to reducing the difficulty of limiting the reversal of the fan and improving operational safety; on the other hand, it can avoid the execution end 201 from contacting the aforementioned shaft 10' when the speed of the fan shaft 10' is high, which is beneficial to reducing the wear of the fan shaft 10' and the execution end 201, extending the service life of the fan shaft 10' and the brake assembly 200, and reducing the repair and maintenance costs of the braking device 10 and the fan.

[0049] It can be understood that, in actual applications, the braking device 10 can be provided on a fan, or used as a component of an air supply device, and the air supply device includes a fan.

[0050] It is understood that the control component and the fan can be signal-connected so that the control component and the fan can synchronously receive the aforementioned shutdown command. The control component and the brake assembly 200 can also be signal-connected so that the control component can send control commands to the brake assembly 200, thereby controlling the operation of the brake assembly 200. For example, the control component can include a delay switch connected to the fan and the brake assembly 200. Upon receiving the aforementioned shutdown command, the delay switch closes after a predetermined delay, allowing the brake assembly 200 to power on and enter the aforementioned startup state.

[0051] It is understandable that the aforementioned preset time length can be set according to actual needs, and no further restrictions are made here. For example, if the time length required for the fan shaft 10' to automatically reduce its speed to 0 when the fan receives the aforementioned shutdown command is used as a reference time length, the aforementioned preset time length may be greater than 0 and less than the aforementioned reference time length, or equal to the aforementioned reference time length, or greater than the aforementioned reference time length; in the case where the aforementioned preset time length is greater than 0 and less than the aforementioned reference time length, the execution end 201 can contact the shaft 10' during the process of the aforementioned shaft 10' speed reduction, and apply a braking force to the shaft 10', thereby braking the shaft 10', speeding up the time required for the shaft 10' speed to reduce to 0, improving the stopping efficiency of the shaft 10', and increasing the speed of the shaft 10'. After it is reduced to 0, the shaft 10' is prevented from reversing; when the aforementioned preset time length is equal to the aforementioned reference time length, the execution end 201 can contact the shaft 10' when the rotation speed of the shaft 10' is 0 or approximately 0, and apply a braking force to the shaft 10', thereby preventing the shaft 10' from reversing; when the aforementioned preset time length is greater than the aforementioned reference time length, the execution end 201 can contact the shaft 10' when the rotation speed of the shaft 10' is 0 or approximately 0, or when the shaft 10' is already in a reversing state, and apply a braking force to the shaft 10', thereby preventing the shaft 10' from reversing or limiting the reversing movement of the shaft 10'.

[0052] like Figure 1 As shown, in some examples, the brake assembly 200 includes: a pneumatic actuator 210 having a ventilation end 203 and an actuator end 201; an electric control valve 220, used to connect or cut off the air supply device and the ventilation end 203; wherein, the electric control valve 220 is connected to the control assembly, and the control assembly is used to control the electric control valve 220 to delay for a preset period of time and then connect the air supply device and the ventilation end 203 when the fan receives a shutdown command.

[0053] In this technical solution, the brake assembly 200 may include the aforementioned pneumatic actuator 210 and the aforementioned electric control valve 220; based on the aforementioned setting, the control assembly can delay the start of the pneumatic actuator 210 by controlling the electric control valve 220 to delay the connection between the pneumatic actuator 210 and the air supply device, so that the aforementioned execution end 201 can contact the aforementioned rotating shaft 10' and apply a braking force to the aforementioned rotating shaft 10' when the rotation speed of the aforementioned rotating shaft 10' is reduced to a certain level or a reversal phenomenon occurs. In addition, by adopting the method of applying a braking force to the aforementioned rotating shaft 10' by the pneumatic actuator 210, the controllability of the aforementioned braking force can be improved, which is beneficial for the execution end 201 to apply a larger braking force to the aforementioned rotating shaft 10', and further improve the limiting effect of the brake device 10 on the reversal of the aforementioned rotating shaft 10'.

[0054] It can be understood that when the electric control valve 220 is connected to the aforementioned air supply device and the aforementioned ventilation end 203, the pneumatic actuator 210 can be connected to the gas output by the air supply device through the electric control valve 220, thereby operating under the drive of the aforementioned gas to enter the aforementioned starting state. Accordingly, the actuator end 201 moves under the drive of the aforementioned gas until it abuts against the rotating shaft 10' and applies braking force to the rotating shaft 10'.

[0055] It can be understood that the aforementioned air supply device can be an air pump.

[0056] It can be understood that, in this technical solution, the control component signal is connected to the electric control valve 220 .

[0057] like Figure 1 As shown, in some examples, the pneumatic actuator 210 includes: a first brake pad 211, formed with an actuator end 201; a shell 212, the shell 212 is formed with a vent end 203; a partition 213, arranged in the shell 212, the first plate side 213a of the partition 213 and the shell 212 form an air cavity 204, the air cavity 204 is connected to the vent end 203, the second plate side 213b of the partition 213 is away from the air cavity 204 and is used to be arranged toward the rotating shaft 10', and the partition 213 is elastically deformable; a first connecting rod 214, passed through the support 100, the first connecting rod 214 is connected between the second plate side 213b and the first brake pad 211, and the first connecting rod 214 is suitable for sliding relative to the support 100 along the arrangement direction of the air cavity 204 and the second plate side 213b.

[0058] In this technical solution, the pneumatic actuator 210 may include the aforementioned first brake pad 211, a housing 212 and a partition 213; based on the aforementioned arrangement, when the electric control valve 220 is connected to the aforementioned vent port 203 and the aforementioned air supply device, the air cavity 204 can be connected to the gas output by the air supply device through the vent port 203. Since the partition 213 has the ability of elastic deformation, as the amount of gas and the air pressure in the air cavity 204 increase, the partition 213 can generate a flow along the air cavity 204 to the aforementioned second plate side 213 under the action of the air pressure. The elastic deformation in the direction of b increases the volume of the air cavity 204. Accordingly, the partition 213 can drive the first brake pad 211 to slide relative to the support 100 along the air cavity 204 to the direction of the aforementioned second plate side 213b through the first connecting rod 214, so that the first brake pad 211 approaches until it abuts the aforementioned rotating shaft 10' to apply braking force to the aforementioned rotating shaft 10', thereby being able to reduce the structural complexity of the brake assembly 200 while achieving braking of the rotating shaft 10', which is beneficial to reducing the use cost of the braking device 10.

[0059] It can be understood that in actual applications, the brake assembly 200 can be switched from the start state to the aforementioned closed state by releasing the pressure in the air cavity 204. Accordingly, the elastic deformation of the partition 213 in the start state will gradually recover as the air cavity 204 is depressurized, and can drive the gas in the air cavity 204 to be discharged during the recovery process, thereby improving the efficiency of the brake assembly 200 in switching from the start state to the aforementioned closed state.

[0060] like Figure 1 As shown, in some examples, the pneumatic actuator 210 also includes: a second brake pad 215, which is formed with a contact end 202, the contact end 202 is arranged opposite to the actuator end 201, and is used to abut the rotating shaft 10'; a mounting seat 216, and the shell 212 is arranged on the mounting seat 216; a second connecting rod 217, which is passed through the support 100, and the second connecting rod 217 is connected between the mounting seat 216 and the second brake pad 215, and the second connecting rod 217 is suitable for sliding relative to the support 100 along the arrangement direction of the air cavity 204 and the second plate side 213b.

[0061] In this technical solution, the pneumatic actuator 210 can also include the aforementioned second brake pad 215, the mounting seat 216 and the second connecting rod 217; based on the aforementioned setting, when the actuator end 201 abuts against the aforementioned rotating shaft 10', if the gas volume and pressure in the air cavity 204 continue to increase, the shell 212 will produce a displacement along the aforementioned second plate side 213b to the air cavity 204 as the volume of the air cavity 204 increases, so that the shell 212 can drive the second brake pad 215 to move along the aforementioned second plate side 213b to the air cavity 204 through the mounting seat 216 and the second connecting rod 217, so that the braking end of the second brake pad 215 is close to the rotating shaft 10' until the contact end 202 contacts the rotating shaft 10', and then the second brake pad 215 can cooperate with the first brake pad 211 to jointly apply braking force to the rotating shaft 10', which is beneficial to improving the braking effect of the braking device 10 on the rotating shaft 10' and reducing the risk of reversal of the rotating shaft 10'.

[0062] It can be understood that the contact end 202 and the execution end 201 are arranged opposite to each other and are used to abut the rotating shaft 10', which means that the contact end 202 and the execution end 201 are respectively located on opposite sides of the rotating shaft 10', and both the contact end 202 and the execution end 201 are facing the rotating shaft 10'.

[0063] like Figure 1 As shown, in some examples, the pneumatic actuator 210 further includes: a first elastic member 218, connected between the mounting seat 216 and the second plate side 213b, and the first elastic member 218 is used to apply an elastic force to the second plate side 213b along the direction from the second plate side 213b to the air cavity 204.

[0064] In this technical solution, the pneumatic actuator 210 can also include the aforementioned first elastic member 218; based on the aforementioned setting, during the process of depressurization of the aforementioned air cavity 204, the first elastic member 218 can push the partition 213 to improve the deformation recovery efficiency of the partition 213, which is conducive to the rapid separation of the first brake pad 211 from the rotating shaft 10', and improves the efficiency of switching the brake assembly 200 from the start state to the aforementioned closed state.

[0065] It can be understood that, in the aforementioned starting state, the elastic deformation amounts of the aforementioned partition 213 and the aforementioned first elastic member 218 are both greater than 0.

[0066] It can be understood that the first elastic member 218 can be a spring.

[0067] like Figure 1 As shown, in some examples, the pneumatic actuator 210 further includes: a second elastic member 219, connected between the second connecting rod 217 and the support 100, and the second elastic member 219 is used to apply an elastic force to the second connecting rod 217 along the air cavity 204 to the second plate side 213b.

[0068] In this technical solution, the pneumatic actuator 210 can also include the aforementioned first elastic member 218; based on the aforementioned setting, during the process of depressurizing the aforementioned air cavity 204, the second elastic member 219 can push the second connecting rod 217 to move along the air cavity 204 to the second plate side 213b, so as to drive the second brake pad 215 away from the aforementioned rotating shaft 10', thereby releasing the rotation restriction of the second brake pad 215 on the rotating shaft 10', which is conducive to the rapid separation of the second brake pad 215 from the rotating shaft 10', providing favorable conditions for the smooth start-up of the fan.

[0069] It can be understood that, when the contact end 202 abuts against the rotating shaft 10 ′, the elastic deformation of the second elastic member 219 is greater than zero.

[0070] It can be understood that the second elastic member 219 can be a spring.

[0071] like Figure 1 As shown, in some examples, the first brake pad 211 includes a first substrate 2111 and a first rubber pad 2112, one side of the first substrate 2111 is connected to the first connecting rod 214, the first rubber pad 2112 is arranged on the other side of the first substrate 2111, and the first rubber pad 2112 is formed with an execution end 201; the second brake pad 215 includes a second substrate 2151 and a second rubber pad 2152, the second substrate 2151 is connected to the second connecting rod 217, the second rubber pad 2152 is arranged on the second substrate 2151, and the second rubber pad 2152 is formed with a contact end 202.

[0072] In this technical solution, the first brake pad 211 may include the aforementioned first substrate 2111 and the aforementioned first rubber pad 2112, and the aforementioned second brake pad 215 may include the aforementioned second substrate 2151 and the aforementioned second rubber pad 2152; based on the aforementioned arrangement, the first brake pad 211 and the second brake pad 215 can contact the rotating shaft 10' through the first rubber pad 2112 and the second rubber pad 2152 respectively, thereby, on the one hand, ensuring that both the executing end 201 and the contact end 202 can generate a large friction force with the rotating shaft 10' to ensure the braking effect on the rotating shaft 10', and on the other hand, it can also avoid rigid contact between the executing end 201 or the contact end 202 and the rotating shaft 10', which is beneficial to further reduce the wear of the rotating shaft 10' and prevent the braking device 10 from damaging the rotating shaft 10' of the fan.

[0073] In some examples, the electrically controlled valve 220 has a first valve port, a second valve port, and a third valve port, the first valve port is connected to the ventilation end 203, the second valve port is used to connect to the air supply device, and the third valve port is used to connect to the atmosphere, and the electrically controlled valve 220 has a first working state and a second working state; in the first working state, the first valve port and the second valve port are connected, and the third valve port is cut off; in the second working state, the first valve port and the third valve port are connected, and the second valve port is cut off; the control component is used to control the electrically controlled valve 220 to operate in the first working state after a preset delay time when the fan receives a shutdown command, or to control the electrically controlled valve 220 to operate in the second working state when the fan receives a start command.

[0074] In this technical solution, the electrically controlled valve 220 may have the aforementioned first valve port, second valve port, and third valve port, and may have the aforementioned first working state and second working state. Based on the aforementioned setting, on the one hand, the control component may control the electrically controlled valve 220 to operate in the first working state after a preset delay when the fan receives a shutdown command, thereby connecting the pneumatic actuator 210 to the air supply device and receiving the gas output by the air supply device. Accordingly, the actuator end 201 may move under the drive of the aforementioned gas until it abuts against the aforementioned rotating shaft 10' and applies a braking force to the aforementioned rotating shaft 10'. On the other hand, the control component may control the electrically controlled valve 220 to operate in the second working state when the fan receives a start command, thereby connecting the pneumatic actuator 210 to the atmosphere. Accordingly, the driving force applied to the actuator end 201 is eliminated, thereby facilitating the separation of the actuator end 201 from the aforementioned rotating shaft 10', so that the brake component 200 switches to the aforementioned closed state and releases the braking force on the rotating shaft 10', providing favorable conditions for the fan to resume operation.

[0075] It is understandable that the aforementioned control component and the aforementioned fan can be connected by signal so that the control component and the fan can synchronously obtain the aforementioned start-up instruction.

[0076] Taking the case where the pneumatic actuator 210 includes the aforementioned housing 212 as an example, when the electric-controlled valve 220 is in the aforementioned first working state, the gas in the air cavity 204 can be connected to the air supply device through the aforementioned first valve port and the second valve port; when the electric-controlled valve 220 is in the aforementioned second working state, the gas in the air cavity 204 can be connected to the atmosphere through the aforementioned first valve port and the third valve port.

[0077] In some examples, the control component is further configured to control the brake component 200 to close when the wind turbine receives a start command.

[0078] In this technical solution, the control component can also be used to control the brake component 200 to close when the fan receives a start-up command; based on the above-mentioned setting, when the fan has a start-up requirement, the brake device 10 can control the brake component 200 to enter a closed state through the control component to release the braking force on the rotating shaft 10', facilitate the rotating shaft 10' to resume operation, and prevent the execution end 201 from rubbing against the rotating shaft 10', which is beneficial to reducing the operating load of the fan.

[0079] According to a second aspect of an embodiment of the present disclosure, an air supply device is proposed, including: a fan; a braking device 10 as proposed in any one of the first aspects above, and a support 100 is arranged on the fan.

[0080] The air supply equipment provided by the embodiment of the present disclosure includes a fan and a brake device 10 as proposed in any one of the first aspects above; the brake device 10 includes the aforementioned support 100, a brake assembly 200 and a control assembly; wherein the support 100 can be set on the fan, so that it can be located relatively close to the fan and be installed and fixed by the fan, and the brake assembly 200 is set on the support 100 and can be supported by the support 100; the brake assembly 200 has an execution end 201 and has an on state and a off state. When the brake assembly 200 is in the aforementioned on state, the execution end 201 can abut against the rotating shaft 10' of the fan, thereby applying a braking force to the rotating shaft 10' to limit the rotation of the rotating shaft 10'. When the brake assembly 200 is in the aforementioned off state, The aforementioned execution end 201 is separated from the aforementioned rotating shaft 10', so that the aforementioned braking force and rotation restriction are released; the control component can be connected to the aforementioned brake component 200, and when the fan receives the shutdown command, it can control the brake component 200 to start after a preset delay, that is, control the brake component 200 to enter the aforementioned startup state; it can be understood that when the fan receives the aforementioned shutdown command, the fan's motor will stop driving the aforementioned rotating shaft 10', so that the rotation speed of the rotating shaft 10' will gradually decrease. In this case, by controlling the delayed start of the aforementioned brake component 200, the aforementioned execution end 201 can contact the aforementioned rotating shaft 10' and apply braking force to the aforementioned rotating shaft 10' when the rotation speed of the aforementioned rotating shaft 10' decreases to a certain level or reversal occurs.

[0081] Based on the above-mentioned setting, on the one hand, the braking device 10 can automatically brake the fan shaft 10' after the fan stops to limit or prevent the reversal of the fan shaft 10', which is beneficial to the rapid resumption of the fan in subsequent operations. There is no need for operators to disassemble and assemble the limit parts of the fan, which is beneficial to reducing the difficulty of limiting the reversal of the fan and improving operational safety; on the other hand, it can avoid the execution end 201 from contacting the aforementioned shaft 10' when the speed of the fan shaft 10' is high, which is beneficial to reducing the wear of the fan shaft 10' and the execution end 201, extending the service life of the fan shaft 10' and the brake assembly 200, and reducing the repair and maintenance costs of the braking device 10 and the fan.

[0082] It can be understood that, in actual applications, the braking device 10 can be provided on a fan, or used as a component of an air supply device, and the air supply device includes a fan.

[0083] It is understood that the control component and the fan can be signal-connected so that the control component and the fan can synchronously receive the aforementioned shutdown command. The control component and the brake assembly 200 can also be signal-connected so that the control component can send control commands to the brake assembly 200, thereby controlling the operation of the brake assembly 200. For example, the control component can include a delay switch connected to the fan and the brake assembly 200. Upon receiving the aforementioned shutdown command, the delay switch closes after a predetermined delay, allowing the brake assembly 200 to power on and enter the aforementioned startup state.

[0084] It is understandable that the aforementioned preset time length can be set according to actual needs, and no further restrictions are made here. For example, if the time length required for the fan shaft 10' to automatically reduce its speed to 0 when the fan receives the aforementioned shutdown command is used as a reference time length, the aforementioned preset time length may be greater than 0 and less than the aforementioned reference time length, or equal to the aforementioned reference time length, or greater than the aforementioned reference time length; in the case where the aforementioned preset time length is greater than 0 and less than the aforementioned reference time length, the execution end 201 can contact the shaft 10' during the process of the aforementioned shaft 10' speed reduction, and apply a braking force to the shaft 10', thereby braking the shaft 10', speeding up the time required for the shaft 10' speed to reduce to 0, improving the stopping efficiency of the shaft 10', and increasing the speed of the shaft 10'. After it is reduced to 0, the shaft 10' is prevented from reversing; when the aforementioned preset time length is equal to the aforementioned reference time length, the execution end 201 can contact the shaft 10' when the rotation speed of the shaft 10' is 0 or approximately 0, and apply a braking force to the shaft 10', thereby preventing the shaft 10' from reversing; when the aforementioned preset time length is greater than the aforementioned reference time length, the execution end 201 can contact the shaft 10' when the rotation speed of the shaft 10' is 0 or approximately 0, or when the shaft 10' is already in a reversing state, and apply a braking force to the shaft 10', thereby preventing the shaft 10' from reversing or limiting the reversing movement of the shaft 10'.

[0085] In addition, since the air supply equipment provided by the embodiment of the present disclosure includes the braking device 10 proposed in any one of the first aspects above, it has all the beneficial effects of the braking device 10, which will not be described in detail here.

[0086] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0087] In the description of the present disclosure, it is to be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as a limitation on the present disclosure.

[0088] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0089] The above are merely preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A braking device, characterized in that: include: A support, used for being arranged on the fan; A brake assembly is provided on the support, and the brake assembly has an activated state and a closed state; In the activated state, the actuator end of the brake assembly abuts against the rotating shaft of the fan to apply a braking force to the rotating shaft; in the closed state, the actuator end of the brake assembly is separated from the rotating shaft of the fan; The control component is connected to the brake component and is used to control the brake component to start after a preset delay when the fan receives a shutdown command.

2. The braking device according to claim 1, characterized in that The brake assembly comprises: A pneumatic actuator having a venting end and the actuating end; An electrically controlled valve, used to connect or disconnect the air supply device and the venting end; The electrically controlled valve is connected to the control component, and the control component is used to control the electrically controlled valve to delay for a preset period of time and then connect the air supply device and the ventilation end when the blower receives the shutdown instruction.

3. The braking device according to claim 2, characterized in that The pneumatic actuator comprises: a first brake pad, formed with the actuating end; a housing, wherein the housing is formed with the venting end; a partition disposed in the shell, wherein a first plate side of the partition and the shell enclose an air cavity, the air cavity being in communication with the vent end, a second plate side of the partition facing away from the air cavity and arranged toward the rotating shaft, and the partition being elastically deformable; A first connecting rod is provided through the support, the first connecting rod is connected between the second plate side and the first brake pad, and the first connecting rod is suitable for sliding relative to the support along the arrangement direction of the air cavity and the second plate side.

4. The braking device according to claim 3, characterized in that The pneumatic actuator further comprises: a second brake pad, formed with a contact end, the contact end being arranged opposite to the actuating end and being configured to abut against the rotating shaft; a mounting seat, the housing being disposed on the mounting seat; A second connecting rod is provided through the support, the second connecting rod is connected between the mounting seat and the second brake pad, and the second connecting rod is suitable for sliding relative to the support along the arrangement direction of the air cavity and the second plate side.

5. The braking device according to claim 4, characterized in that The pneumatic actuator further comprises: The first elastic member is connected between the mounting seat and the second plate side, and is used to apply an elastic force to the second plate side in a direction from the second plate side to the air cavity.

6. The braking device according to claim 4, characterized in that The pneumatic actuator further comprises: The second elastic member is connected between the second connecting rod and the support, and is used to apply an elastic force to the second connecting rod along the direction from the air cavity to the second plate side.

7. The braking device according to claim 4, characterized in that The first brake pad includes a first base plate and a first rubber pad, one side of the first base plate is connected to the first connecting rod, the first rubber pad is arranged on the other side of the first base plate, and the first rubber pad is formed with the actuating end; The second brake pad includes a second base plate and a second rubber pad, the second base plate is connected to the second connecting rod, the second rubber pad is arranged on the second base plate, and the second rubber pad is formed with the contact end.

8. The braking device according to claim 2, characterized in that: The electrically controlled valve has a first valve port, a second valve port, and a third valve port. The first valve port is connected to the vent port, the second valve port is used to connect to the air supply device, and the third valve port is used to communicate with the atmosphere. The electrically controlled valve has a first working state and a second working state. In the first working state, the first valve port and the second valve port are connected, and the third valve port is blocked; In the second working state, the first valve port and the third valve port are connected, and the second valve port is blocked; The control component is used to control the electric control valve to operate in the first working state after a preset delay when the fan receives the shutdown command, or to control the electric control valve to operate in the second working state when the fan receives the start-up command.

9. The braking device according to any one of claims 1 to 8, characterized in that The control component is further configured to control the brake component to close when the fan receives a start instruction.

10. An air supply device, characterized in that: include: Fan; The braking device according to any one of claims 1 to 9, wherein the support is provided on the fan.

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