Reduction gearbox with safe self-locking function

Abstract

The invention discloses a reduction gearbox with a safe self-locking function, which comprises a motor main body, a reduction gearbox, a turntable, a locking device and a turntable braking device, and is characterized in that the reduction gearbox is arranged at the front end of the motor main body, a mounting flange is fixedly mounted on an output shaft of the reduction gearbox, and the turntable is fixedly mounted on the mounting flange through bolts; the locking device is arranged at the tail of the motor body and comprises a connecting shaft rotating disc and a locking shaft assembly used for clamping the connecting shaft rotating disc, the rotating disc braking device is installed at the front end of the reduction gearbox, and the rotating disc braking device can enable the rotating disc to decelerate and brake by tightly holding the rotating disc. According to the reduction gearbox, the locking device is installed at the tail of the motor body, the rotating disc braking device is installed at the position of the rotating disc, the locking device and the rotating disc braking device are combined, the front-back dual-braking self-locking effect is achieved, and therefore the time of a load object from a high-speed rotating state to a stopping state is greatly shortened; and the safety of the reduction gearbox in application is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a reduction box with a safety self-locking function. Background Art

[0002] As an important power device, motors are widely used in industries, homes, transportation and other fields. Their high efficiency and reliability make them a core component of modern mechanical systems. However, with the increasing requirements for motor performance and safety, the design of existing motors is still insufficient in some aspects, especially in terms of braking ability.

[0003] In the application of motors, especially in automation and control systems, quickly stopping the rotation of motors is an important technical requirement. Most current motors continue to run by inertia after power failure, which results in a long time for them to stop. This not only affects the efficiency of the equipment, but may also cause safety hazards in emergency situations. For example, in some application scenarios that require fast response (such as elevators, cranes, etc.), slow stopping of motors may cause equipment loss of control or casualties.

[0004] Existing motors usually lack effective auxiliary braking structures, resulting in the rotating parts continuing to rotate for a period of time after the motor is powered off. This is due to inertia and the limitations of the motor's own design. Some motors cannot immediately generate braking force to stop rotation when the power is off. This situation is particularly obvious in high-speed motors, because their rotational inertia is large and the braking effect is not obvious, resulting in delayed downtime, so there are certain safety hazards. Summary of the invention

[0005] The purpose of the present invention is to overcome the defect in the prior art that the motor cannot immediately generate braking force to stop rotation when the power is cut off, so the braking effect is not obvious, resulting in a delay in the shutdown time, and thus there are certain safety hazards. A reduction gearbox with a safe self-locking function is provided. The motor is provided by installing a locking device at the tail of the motor body. The locking shaft assembly in the locking device can quickly slow down the motor body to stop rotation by clamping the connecting shaft turntable when the motor body stops. Therefore, when the load object on the turntable is abnormal and needs to be quickly decelerated and stopped, the locking device can quickly decelerate and brake the output shaft of the motor body, thereby greatly reducing the time for the load object to go from a high-speed rotation state to a stopped state, achieving the effect of safe self-locking braking, and improving the safety of the motor when it is used.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The invention discloses a reduction box with a safety self-locking function, comprising a motor body;

[0008] A reduction box is arranged at the front end of the motor body and is drivingly connected to the motor body, and a mounting flange is fixedly mounted on the output shaft of the reduction box;

[0009] A rotating disk is fixedly mounted on the mounting flange by bolts so that the rotating disk is synchronized with the output shaft of the reduction box;

[0010] A locking device, which is arranged at the tail of the motor body, and comprises a coupling rotating disk and a locking shaft assembly for clamping the coupling rotating disk;

[0011] A turntable brake device is installed at the front end of the reduction box, and the turntable brake device can decelerate and brake the turntable by holding the turntable tightly;

[0012] The output shaft of the motor body extends from the end of the motor body to the outside and is fixedly connected to the coupling turntable, so that when the motor body is running, the coupling turntable and the output shaft of the motor body rotate synchronously, and the locking shaft assembly is installed at the tail of the motor body, and the locking shaft assembly can reduce the speed of the coupling turntable by clamping the coupling turntable;

[0013] When the motor is used, the load object is first fixed on the turntable, and the turntable is driven to rotate by the motor body and the reduction gear box, thereby driving the load object installed on the turntable to rotate synchronously. The device installs a locking device at the tail of the motor body. The locking shaft assembly in the locking device can quickly slow down the motor body to stop rotating by clamping the connecting shaft turntable when the motor body stops. Therefore, when the load object on the turntable is abnormal and needs to be quickly slowed down and stopped, the locking device can quickly decelerate and brake the output shaft of the motor body, thereby greatly reducing the time for the load object to stop from a high-speed rotation state, thereby improving the safety of the device when used. A turntable brake device is also provided at the position of the turntable. The turntable brake device can slow down and brake the turntable by clamping it, and cooperate with the locking device to brake the motor body to achieve front and rear dual braking effects, thereby greatly reducing the time for the load object to stop from a high-speed rotation state.

[0014] As a further description of the above technical solution: the locking shaft assembly includes:

[0015] A holding shoe, which is arranged at the edge of the coupling rotating disk and can move in the radial direction of the coupling rotating disk, and a clamping groove is arranged at one end of the holding shoe close to the coupling rotating disk;

[0016] A fixing plate, which is fixed to the tail of the motor body, and the fixing plate is fixedly connected to the bushing via a return spring;

[0017] A driving mechanism is arranged at the tail of the motor body and is used to control the radial movement of the brake shoe along the coupling turntable.

[0018] Based on this, the return spring can always provide a pulling force to the brake shoe, and this pulling force makes the brake shoe have a tendency to move away from the coupling turntable. Therefore, when braking and decelerating are not required, the brake shoe does not contact the coupling turntable. When it is necessary to brake and decelerate the coupling turntable, the driving mechanism controls the radial movement of the brake shoe along the coupling turntable, so that the clamping groove of the brake shoe gradually clamps the coupling turntable for braking. After the braking stops, the driving mechanism resets, and the brake shoe resets to be separated from the coupling turntable under the elastic force of the return spring, ending the braking.

[0019] As a further description of the above technical solution: A tail housing is arranged at the bottom of the motor body, and the driving mechanism includes:

[0020] A cylinder is fixedly installed on the tail housing;

[0021] A chuck is arranged inside the tail housing. The center of the chuck is connected to the piston rod of the cylinder. The chuck is parallel to the coupling turntable, and there is a gap between the chuck and the coupling turntable. A wedge-shaped pin is arranged on one side edge of the chuck close to the coupling turntable;

[0022] Among them, a wedge-shaped socket is opened on one side of the brake shoe close to the chuck. The wedge-shaped pin fits with the wedge-shaped socket, so that when the wedge-shaped pin gradually inserts into the wedge-shaped socket, it can push the brake shoe to move radially along the coupling turntable towards the coupling turntable, thereby realizing the clamping and braking of the coupling turntable.

[0023] As a further description of the above technical solution: A guide groove is radially opened along the coupling turntable at the tail of the motor body. A slider adapted to the guide groove is installed on the brake shoe, and the slider is slidably assembled in the guide groove. Therefore, when the brake shoe is squeezed, it can move along the direction of the guide groove, that is, move radially along the coupling turntable.

[0024] As a further description of the above technical solution: The turntable braking device includes:

[0025] A chassis is fixed to the front end of the reduction gearbox;

[0026] A main ring frame, which adopts an annular structure, is fixed above the chassis. A cavity is opened on the inner wall of the main ring frame;

[0027] A braking member is movably assembled in the cavity and can move radially along the main ring frame;

[0028] A braking control mechanism is arranged inside the main ring frame and is used to control the movement of the braking member to realize the braking of the turntable;

[0029] Working principle: When it is necessary to brake the turntable, the braking control mechanism controls the brake member to move radially along the main ring frame, and the turntable is braked by gradually clamping the turntable with the brake member.

[0030] As a further description of the above technical solution: The brake member has an arc-shaped structure, and the brake member is connected to the inner wall of the cavity through a tension spring, so that the brake member has a tendency to move away from the turntable under the action of the tension of the tension spring, thereby ensuring that when the turntable does not need to be braked, the brake member remains separated from the turntable and does not affect the rotation of the turntable.

[0031] As a further description of the above technical solution: One side of the brake member located inside the cavity has a wedge surface A, a wedge member is provided at the wedge surface A of the brake member inside the cavity, and a wedge surface B is provided on one side of the wedge member in contact with the wedge surface A. The wedge member can rotate circumferentially along the main ring frame under the drive of the braking control mechanism. When the wedge member rotates, through the action of the wedge surface A and the wedge surface B, the brake member can be extruded to move outwards, thereby achieving the effect of gradually clamping the turntable for braking.

[0032] As a further description of the above technical solution: A rotating ring is rotatably installed below the inner wall of the main ring frame, the wedge member is fixedly installed on the rotating ring, and the braking control mechanism can drive the rotation of the rotating ring so that the wedge member can rotate circumferentially along the main ring frame.

[0033] As a further description of the above technical solution: The braking control mechanism includes:

[0034] A mounting plate, which is fixedly installed on the chassis;

[0035] A top pressing plate, which is fixedly installed on the inner wall of the rotating ring;

[0036] An electric push rod, which is fixedly installed on one side of the mounting plate, and the piston rod of the electric push rod abuts against one side of the top pressing plate. Such a structural setting enables the rotating ring to rotate by pushing the top pressing plate when the electric push rod operates, and further enables the wedge member to rotate circumferentially along the main ring frame.

[0037] As a further description of the above technical solution: Limit blocks are provided on both sides of the brake member, limit grooves are provided on the inner wall of the cavity along the moving direction of the brake member, and the limit blocks are slidably assembled in the limit grooves. Therefore, when the brake member moves, it will be restricted by the limit blocks, and the movement is more stable and will not come out.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The speed reducer installs a locking device at the tail of the motor main body. When the motor main body stops, the locking shaft assembly in the locking device can quickly decelerate and stop by clamping the coupling turntable. Therefore, when an abnormality occurs to the load object on the turntable and quick deceleration and stop are required, the locking device can quickly decelerate and brake the output shaft of the motor main body, thus greatly reducing the time for the load object to change from the high-speed rotation state to the stop state, achieving the effect of safe self-locking braking and improving the safety of the speed reducer during application;

[0040] The speed reducer is also provided with a turntable braking device at the turntable position. The turntable braking device can decelerate and brake the turntable by clamping it, and cooperate with the braking of the motor main body by the locking device to achieve the dual front and rear braking effects, thus greatly reducing the time for the load object to change from the high-speed rotation state to the stop state and improving the safety of the speed reducer during application. Brief Description of the Drawings

[0041] Figure 1 is the overall structural schematic diagram of the present invention;

[0042] Figure 2 is the structural schematic diagram of the turntable in the present invention;

[0043] Figure 3 is the exploded structural schematic diagram of the turntable in the present invention;

[0044] Figure 4 is the structural schematic diagram of the turntable after removing the braking friction parts in the present invention;

[0045] Figure 5 is the structural schematic diagram of the pressure ring in the present invention;

[0046] Figure 6 is the installation structural schematic diagram of the turntable braking device in the present invention;

[0047] Figure 7 is the installation structural schematic diagram of the braking parts in the present invention;

[0048] Figure 8 is the enlarged structural schematic diagram of the connection position between the braking parts and the wedge parts in the present invention;

[0049] Figure 9 is the installation structural schematic diagram of the connection device in the present invention;

[0050] Figure 10 is the sectional structural schematic diagram of the connection device in the present invention;

[0051] Figure 11 is the sectional schematic diagram of the connection device in the present invention;

[0052] Figure 12 is the structural schematic diagram of the sealing device in the present invention;

[0053] Figure 13 Schematic diagram of the installation structure of the sealing device in the present invention;

[0054] Figure 14 Schematic diagram of the installation structure of the locking device in the present invention;

[0055] Figure 15 Schematic diagram of the structure of the locking device in the present invention;

[0056] Figure 16 Schematic diagram of the structure of the locking shaft assembly in the present invention.

[0057] Reference numerals: 1, motor main body; 100, front ring frame; 1000, sealing groove; 1001, metal ring; 101, guide groove;

[0058] 2, speed reducer; 200, mounting flange;

[0059] 3, turntable; 301, fixed screw hole; 302, mounting screw hole; 303, pressure ring; 3030, limiting piece; 3031, compression spring; 304, clamping plate; 3040, inserting shaft; 305, braking friction member; 306, pressure groove; 307, side cavity; 308, limiting port; 309, embedding groove;

[0060] 4, turntable braking device; 400, main ring frame; 4000, cavity; 4001, limiting groove; 401, chassis; 402, braking member; 4020, wedge surface A; 4021, limiting block; 403, braking control mechanism; 4030, electric push rod; 4031, mounting plate; 4032, top pressure plate; 404, wedge member; 4040, wedge surface B; 405, rotating ring; 406, tension spring;

[0061] 5, connecting device; 500, connecting kit; 5000, socket; 501, disassembly and assembly ring; 502, plug-in; 5020, C-shaped groove; 503, hook; 504, top spring;

[0062] 6, sealing device; 600, sealing sleeve; 601, fixing hoop; 602, sealing ring; 603, soft magnetic strip; 604, lifting ear;

[0063] 7, locking device; 700, cylinder; 701, tail shell; 702, chuck; 7020, wedge-shaped plug; 703, coupling turntable; 704, locking shaft assembly; 7040, fixing plate; 7041, return spring; 7042, slider; 7043, holding block; 7044, clamping groove; 7045, wedge-shaped socket. Detailed implementation manners

[0064] The following is combined with the attached Figures 1 - 16, further illustrate the specific implementation manner of a speed reducer with a safety self-locking function according to the present invention, overcoming the defect that in the prior art, the motor cannot immediately generate braking force to stop rotation when powered off, so the braking effect is not obvious, resulting in a delay in downtime, and thus there are certain potential safety hazards. The motor is provided with a locking device at the tail of the motor body. The locking shaft assembly in the locking device can, when the motor body stops, quickly decelerate and stop it by clamping the coupling turntable. Therefore, when an abnormality occurs to the load object on the turntable and rapid deceleration and stop are required, the locking device can quickly decelerate and brake the output shaft of the motor body, thereby greatly reducing the time for the load object to change from the high-speed rotation state to the stop state, achieving the effect of safety self-locking braking and enhancing the safety during the application of the motor. The speed reducer with a safety self-locking function according to the present invention is not limited to the description of the following embodiments.

[0065] Embodiment 1:

[0066] This embodiment provides a speed reducer with a safety self-locking function, as Figure 1 , Figures 14 - 16 shown, including a motor body 1, a speed reducer 2, a turntable 3 and a locking device 7. Among them, the speed reducer 2 is arranged at the front end of the motor body 1 and is in transmission connection with the motor body 1. An installation flange 200 is fixedly installed on the output shaft of the speed reducer 2; the turntable 3 is fixedly installed on the installation flange 200 by bolts, so that the turntable 3 is synchronized with the output shaft of the speed reducer 2; the locking device 7 is arranged at the tail of the motor body 1, and the locking device 7 includes a coupling turntable 703 and a locking shaft assembly 704 for clamping the coupling turntable 703;

[0067] Among them, the output shaft of the motor body 1 extends from the end of the motor body 1 to the outside and is fixedly connected to the coupling turntable 703, so that when the motor body 1 operates, the coupling turntable 703 rotates synchronously with the output shaft of the motor body 1. The locking shaft assembly 704 is installed at the tail of the motor body 1, and the locking shaft assembly 704 can, by clamping the coupling turntable 703, decelerate and brake the coupling turntable 703;

[0068] Working principle: When this motor is applied, first, the load object is fixed on the turntable 3, and the turntable 3 is driven to rotate by the motor body 1 and the speed reducer 2, thereby driving the load object installed on the turntable 3 to rotate synchronously. And this device is provided with a locking device 7 at the tail of the motor body 1. The locking shaft assembly 704 in the locking device 7 can, when the motor body 1 stops, quickly decelerate and stop it by clamping the coupling turntable 703. Therefore, when an abnormality occurs to the load object on the turntable 3 and rapid deceleration and stop are required, the locking device 7 can quickly decelerate and brake the output shaft of the motor body 1, thereby greatly reducing the time for the load object to change from the high-speed rotation state to the stop state and enhancing the safety during the application of the device.

[0069] Specifically, as Figures 14 - 16 shown, in order to achieve efficient and rapid braking of the motor, in this embodiment, the shaft locking assembly 704 includes a brake shoe 7043, a fixing plate 7040, and a driving mechanism. Among them, the brake shoe 7043 is disposed at the edge position of the coupling turntable 703 and can move radially along the coupling turntable 703. A clamping groove 7044 is provided at one end of the brake shoe 7043 close to the coupling turntable 703. The fixing plate 7040 is fixed to the tail of the motor body 1. The fixing plate 7040 and the brake shoe 7043 are fixedly connected by a return spring 7041. The driving mechanism is disposed at the tail of the motor body 1 and is used to control the radial movement of the brake shoe 7043 along the coupling turntable 703;

[0070] Based on this, the return spring 7041 can always provide a pulling force to the brake shoe 7043, and this pulling force causes the brake shoe 7043 to have a tendency to move away from the coupling turntable 703. Therefore, when braking and decelerating are not required, the brake shoe 7043 is not in contact with the coupling turntable 703. When it is necessary to brake and decelerate the coupling turntable 703, the driving mechanism controls the brake shoe 7043 to move radially along the coupling turntable 703, so that the clamping groove 7044 of the brake shoe 7043 gradually clamps the coupling turntable 703 for braking. When the braking stops, the driving mechanism resets, and the brake shoe 7043 resets to be separated from the coupling turntable 703 under the elastic force of the return spring 7041, ending the braking.

[0071] Specifically, as Figures 14 - 16 shown, in order to achieve the braking of the coupling turntable 703, in this embodiment, a tail housing 701 is provided at the bottom of the motor body 1. The driving mechanism includes a cylinder 700 and a chuck 702. The cylinder 700 is fixedly installed on the tail housing 701. The chuck 702 is disposed inside the tail housing 701. The center of the chuck 702 is connected to the piston rod of the cylinder 700. The chuck 702 is parallel to the coupling turntable 703, and there is a gap between the chuck 702 and the coupling turntable 703. A wedge-shaped pin 7020 is provided at one side edge of the chuck 702 close to the coupling turntable 703;

[0072] Among them, a wedge-shaped socket 7045 is provided on one side of the brake shoe 7043 close to the chuck 702. The wedge-shaped pin 7020 and the wedge-shaped socket 7045 are in corresponding fit, so that when the wedge-shaped pin 7020 gradually inserts into the wedge-shaped socket 7045, it can push the brake shoe 7043 to move radially along the coupling turntable 703 towards the coupling turntable 703, thereby realizing the clamping and braking of the coupling turntable 703.

[0073] Specifically, as Figures 14 - 16As shown in the figure, in order to enable the jaw 7043 to move radially along the coaxial turntable 703, in this embodiment, a guide groove 101 is provided radially at the tail of the motor main body 1 along the coaxial turntable 703. A slider 7042 adapted to the guide groove 101 is installed on the jaw 7043, and the slider 7042 is slidably assembled in the guide groove 101. Therefore, when the jaw 7043 is squeezed, it can move along the direction of the guide groove 101, that is, move radially along the coaxial turntable 703.

[0074] Specifically, as Figures 14 - 16 shown, in order to improve the braking effect of the locking device 7, in this embodiment, multiple groups of locking shaft assemblies 704 are provided. The multiple groups of locking shaft assemblies 704 are arranged in a circular array with the axis of the coaxial turntable 703 as the center line.

[0075] Specifically, as Figures 14 - 16 shown, in order to improve the quick braking effect of the turntable 3, in this embodiment, a turntable braking device 4 is further included. It is installed at the front end of the reduction gearbox 2. The turntable braking device 4 can decelerate and brake the turntable 3 by clamping the turntable 3. Therefore, when an abnormality occurs in the load object on the turntable 3 and it is necessary to quickly decelerate and stop, the turntable braking device 4 can clamp and decelerate the turntable 3, and cooperate with the braking of the locking device 7 on the motor main body 1 to achieve a double front and rear braking effect, thereby greatly reducing the time for the load object to change from the high-speed rotation state to the stop state, and improving the safety when the device is applied.

[0076] Embodiment 2

[0077] This embodiment provides a locking mechanism for a reduction gearbox turntable. As Figure 1 、 Figures 6 - 8 shown, in order to realize the braking of the turntable 3, in this embodiment, the turntable braking device 4 includes a chassis 401, a main ring frame 400, a braking member 402 and a braking control mechanism 403. Among them, the chassis 401 is fixed to the front end of the reduction gearbox 2. The main ring frame 400 adopts a circular ring structure and is fixed above the chassis 401. A cavity 4000 is provided on the inner wall of the main ring frame 400. The braking member 402 is movably assembled in the cavity 4000 and can move radially along the main ring frame 400. The braking control mechanism 403 is arranged inside the main ring frame 400 and is used to control the movement of the braking member 402 to realize the braking of the turntable 3;

[0078] Working principle: When it is necessary to brake the turntable 3, the braking control mechanism 403 controls the braking member 402 to move radially along the main ring frame 400, and the turntable 3 is braked by gradually clamping the turntable 3 with the braking member 402.

[0079] Specifically, as Figure 1 、 Figures 6 - 8As shown, in order to brake the turntable 3, in this embodiment, the brake member 402 has an arc-shaped structure. The brake member 402 is connected to the inner wall of the cavity 4000 by a tension spring 406, so that the brake member 402 has a tendency to move away from the turntable 3 under the pulling force of the tension spring 406. Thus, when the turntable 3 does not need to be braked, the brake member 402 remains separated from the turntable 3, without affecting the rotation of the turntable 3.

[0080] Specifically, as Figure 1 、 Figures 6 - 8 shown, in order to realize the movement control of the brake member 402, in this embodiment, the surface of the brake member 402 located inside the cavity 4000 has a wedge surface A4020. A wedge member 404 is provided at the wedge surface A4020 of the brake member 402 inside the cavity 4000. A wedge surface B4040 is provided on the side of the wedge member 404 in contact with the wedge surface A4020. The wedge member 404 can rotate circumferentially along the main ring frame 400 under the drive of the brake control mechanism 403. When the wedge member 404 rotates, through the action of the wedge surface A4020 and the wedge surface B4040, the brake member 402 can be extruded to move outwards, thereby realizing the effect of gradually clamping the turntable 3 for braking.

[0081] Specifically, as Figures 6 - 8 shown, in order to realize that the wedge member 404 can rotate circumferentially along the main ring frame 400, in this embodiment, a rotating ring 405 is rotatably installed below the inner wall of the main ring frame 400. The wedge member 404 is fixedly installed on the rotating ring 405. The brake control mechanism 403 can drive the rotation of the rotating ring 405, so that the wedge member 404 can rotate circumferentially along the main ring frame 400.

[0082] Specifically, as Figures 6 - 8 shown, in order to realize the rotation control of the rotating ring 405, in this embodiment, the brake control mechanism 403 includes a mounting plate 4031, a top pressing plate 4032 and an electric push rod 4030. Among them, the mounting plate 4031 is fixedly installed on the chassis 401, the top pressing plate 4032 is fixedly installed on the inner wall of the rotating ring 405, the electric push rod 4030 is fixedly installed on one side of the mounting plate 4031, and the piston rod of the electric push rod 4030 abuts against one side of the top pressing plate 4032. Such a structural setting enables the rotating ring 405 to rotate by pushing the top pressing plate 4032 when the electric push rod 4030 operates, and further enables the wedge member 404 to rotate circumferentially along the main ring frame 400.

[0083] Specifically, as Figure 8As shown, in order to make the movement of the braking member 402 more stable, in this embodiment, limiting blocks 4021 are provided on both sides of the braking member 402, and limiting grooves 4001 are formed in the inner wall of the cavity 4000 along the moving direction of the braking member 402. The limiting blocks 4021 are slidably assembled in the limiting grooves 4001. Therefore, when the braking member 402 moves, it will be restricted by the limiting blocks 4021, and the movement is more stable and will not come out.

[0084] Embodiment 3

[0085] This embodiment provides a speed reducer load turntable structure. As Figures 1 - 5 shown, in order to improve the braking effect of the turntable 3, in this embodiment, a braking friction member 305 is provided at the edge of the turntable 3. The braking friction member 305 is detachably installed, protrudes from the edge of the turntable 3, and both ends of the braking friction member 305 are arc-transitioned. Such a structural setting enables the turntable braking device 4 to generate friction with the braking friction member 305 when braking the turntable 3, thereby avoiding direct contact with the turntable 3, making the braking effect of the device better and not causing wear to the turntable 3, improving the service life of the turntable 3. At the same time, since the braking friction member 305 adopts a detachable installation structure, when the braking friction member 305 is worn, it can be independently replaced.

[0086] Specifically, as Figures 1 - 5 shown, in order to achieve the detachable installation of the braking friction member 305, in this embodiment, a side cavity 307 is formed on the side surface of the turntable 3. The braking friction member 305 is inserted into the side cavity 307. An embedding groove 309 is formed on the upper surface of the turntable 3 at the position of the side cavity 307. A clamping plate 304 is fixedly installed in the embedding groove 309 by inserting a bolt. The bottom insertion shaft 3040 of the clamping plate 304 is inserted into the braking friction member 305 to fix the braking friction member 305. When the clamping plate 304 is disassembled, the braking friction member 305 can be taken out from the side cavity 307 to achieve the disassembly and replacement of the braking friction member 305.

[0087] Specifically, as Figures 2 - 5 shown, in order to install the turntable 3, in this embodiment, a plurality of fixing screw holes 301 are arranged in an array on the upper surface of the turntable 3. The positions of the fixing screw holes 301 correspond one-to-one to the positions of the screw holes on the mounting flange 200. The turntable 3 can be fixedly connected to the mounting flange 200 by inserting bolts into the fixing screw holes 301.

[0088] Specifically, as Figures 2 - 5 shown, in order to install the load object, in this embodiment, a plurality of mounting screw holes 302 corresponding to the load object are also arranged in an array on the upper surface of the turntable 3.

[0089] Specifically, as Figures 3 - 5As shown, in order to improve the stability of the loaded object after it is fixed, in this embodiment, a pressing groove 306 is opened on the upper surface of the turntable 3, and a pressing ring 303 is movably installed on the inner wall of the pressing groove 306, and a pressing spring 3031 is installed between the pressing ring 303 and the bottom surface of the pressing groove 306, and an outward pressing pressure can be applied to the pressing ring 303 through the pressing spring 3031. Therefore, when the loaded object is installed, as the distance between the loaded object and the turntable 3 decreases, the pressing ring 303 can gradually press the loaded object tightly, so that the entire loaded object has an outward pressure, which can reduce the loosening of the loaded object when it rotates for a long time. It should be noted that: as the loaded object rotates for a long time, the bolts for installing the loaded object often become loose, and the setting of the pressing ring 303 can provide an outward thrust to the loaded object, so even if the bolts are slightly loose, the loaded object can still remain stable.

[0090] Specifically, Figures 3 - 5 As shown, in order to prevent the pressing ring 303 from "derailing", in this embodiment, a limiting plate 3030 is set at the lower inner side of the pressing ring 303, and a limiting opening 308 is set on the inner wall of the pressing groove 306 at the position of the limiting plate 3030. The limiting plate 3030 is movably engaged in the limiting opening 308, so no matter how the pressing ring 303 moves, it will not deviate from the pressing groove 306.

[0091] Example 4

[0092] This embodiment provides a detachable reduction gearbox installation structure, such as Figures 9 - 11 As shown, in order to reduce the maintenance cost of the motor, in this embodiment, the reduction box 2 is detachably connected to the motor body 1 through a connecting device 5. Such a structure allows the reduction box 2 or the motor body 1 to be disassembled when abnormal damage occurs to the reduction box 2 or the motor body 1, and then the damaged part can be replaced without replacing the entire motor body 1 and the reduction box 2, thereby reducing the maintenance cost of the motor.

[0093] Specifically, Figures 9 - 11 As shown, in order to realize the detachable connection between the reduction box 2 and the motor body 1 through the connecting device 5, in this embodiment, the connecting device 5 includes a connecting kit 500 and a plug-in 502, wherein the connecting kit 500 is fixedly installed at the front end of the motor body 1, a socket 5000 is provided on the surface of the connecting kit 500, the plug-in 502 is fixedly installed at the bottom of the reduction box 2, the plug-in 502 is inserted into the socket 5000, and a hook 503 capable of engaging the plug-in 502 is provided in the socket 5000.

[0094] Specifically, Figures 9 - 11As shown, in order to achieve the locking of the plug 502, in this embodiment, a C-shaped groove 5020 is formed on the side of the plug 502, and a pressing spring 504 capable of pushing the hook 503 to move and engage into the C-shaped groove 5020 is arranged inside the socket 5000. Such a structural arrangement enables that when the plug 502 is inserted into the socket 5000, under the elastic force of the pressing spring 504, the hook 503 is pressed in the C-shaped groove 5020 to achieve the locking of the plug 502.

[0095] Specifically, as Figures 9 - 11 shown, in order to achieve the active control of the hook 503, thereby facilitating the disassembly of the reduction gearbox 2, in this embodiment, a disassembly and assembly ring 501 is rotatably installed outside the connection kit 500, and one end of the hook 503 is fixedly installed on the inner wall of the disassembly and assembly ring 501. Therefore, when the disassembly and assembly ring 501 is rotated externally, the position of the hook 503 changes. When the hook 503 completely moves out of the C-shaped groove 5020, the plug 502 can be pulled out and removed from the socket 5000, and thus the disassembly of the reduction gearbox 2 can be achieved.

[0096] Specifically, as Figures 9 - 11 shown, in order to ensure the stable connection between the reduction gearbox 2 and the motor main body 1, in this embodiment, a plurality of plugs 502 are provided. The plurality of plugs 502 are distributed in a circular array with the center of the reduction gearbox 2 as the axis, and the socket 5000 and the hook 503 correspond to the plugs 502 one by one.

[0097] Specifically, as Figures 9 - 11 shown, in order to facilitate the rotation of the disassembly and assembly ring 501, in this embodiment, a plurality of rubber pads are embedded on the outer wall of the disassembly and assembly ring 501 to increase the friction of rotation and avoid slipping.

[0098] Embodiment 5

[0099] This embodiment provides a sealing mechanism for the connection position of the reduction gearbox. As Figure 9 、 Figure 12 and Figure 13 shown, in order to ensure the sealing performance of the connection position between the reduction gearbox 2 and the motor main body 1, in this embodiment, a sealing device 6 is arranged at the connection position between the reduction gearbox 2 and the motor main body 1. The sealing device 6 covers the connection device 5. The sealing device 6 has elasticity, and the sealing device 6 can expose the connection device 5 by turning up.

[0100] Specifically, as Figure 9 、 Figure 12 and Figure 13As shown, in order to implement the rollable structure of the sealing device 6 and facilitate the control of the connecting device 5, in this embodiment, the sealing device 6 includes a sealing sleeve 600. The sealing sleeve 600 adopts an annular sleeve structure. A fixing hoop 601 is arranged along the circumference above the sealing sleeve 600, and the fixing hoop 601 presses and fixes the sealing sleeve 600 on the surface of the reduction gearbox 2.

[0101] Specifically, as Figure 9 , Figure 12 and Figure 13 shown, in order to improve the sealing effect at the connection position between the reduction gearbox 2 and the motor main body 1, in this embodiment, a front ring frame 100 is arranged at the outer edge of the front end of the motor main body 1. The outer diameter of the front ring frame 100 is the same as that of the connecting device 5. An annular sealing groove 1000 is formed on the surface of the front ring frame 100 along the circumference. An elastic sealing ring 602 is embedded in the inner side below the sealing sleeve 600. When the sealing sleeve 600 covers the connecting device 5, the sealing ring 602 is clamped in the sealing groove 1000, which can greatly improve the sealing effect at the connection position between the reduction gearbox 2 and the motor main body 1.

[0102] Specifically, as Figure 9 , Figure 12 and Figure 13 shown, in order to further improve the sealing effect at the connection position between the reduction gearbox 2 and the motor main body 1, in this embodiment, a metal ring 1001 is embedded and installed at the position below the sealing groove 1000 on the surface of the front ring frame 100, and a soft magnetic strip 603 is embedded in the lower part inside the sealing sleeve 600. When the sealing sleeve 600 covers the connecting device 5, the soft magnetic strip 603 is attracted and connected to the metal ring 1001, thereby further improving the sealing effect at the connection position between the reduction gearbox 2 and the motor main body 1.

[0103] Specifically, as Figure 9 , Figure 12 and Figure 13 shown, in order to facilitate the up and down rolling of the sealing sleeve 600, thereby facilitating the control of the connecting device 5, in this embodiment, the cross-section of the sealing ring 602 is in a semicircular structure. Therefore, the sealing ring 602 can be more conveniently inserted into or rolled out of the sealing groove 1000, thereby facilitating the up and down rolling of the sealing sleeve 600.

[0104] Specifically, as Figure 9 , Figure 12 and Figure 13 shown, in order to further facilitate the up and down rolling of the sealing sleeve 600, in this embodiment, a lifting ear 604 is arranged at the lower edge of the outer surface of the sealing sleeve 600. By pulling the lifting ear 604, the sealing sleeve 600 can be rolled up upward.

[0105] Specifically, in this embodiment, a plurality of lifting ears 604 are provided, and the plurality of lifting ears 604 are distributed in an annular array.

[0106] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A speed reducer with a safety self-locking function, characterized in that: Comprising: A motor main body (1); A speed reducer (2) which is arranged at the front end of the motor main body (1) and is in transmission connection with the motor main body (1), and an installation flange (200) is fixedly installed on the output shaft of the speed reducer (2); A turntable (3) which is fixedly installed on the installation flange (200) by bolts, so that the turntable (3) is synchronous with the output shaft of the speed reducer (2); A locking device (7) which is arranged at the tail of the motor main body (1), and the locking device (7) includes a coupling turntable (703) and a locking shaft assembly (704) for clamping the coupling turntable (703); A turntable braking device (4) which is installed at the front end of the speed reducer (2), and the turntable braking device (4) can decelerate and brake the turntable (3) by clamping the turntable (3); Wherein, the output shaft of the motor main body (1) extends from the end of the motor main body (1) to the outside and is fixedly connected with the coupling turntable (703), so that when the motor main body (1) operates, the coupling turntable (703) rotates synchronously with the output shaft of the motor main body (1), the locking shaft assembly (704) is installed at the tail of the motor main body (1), and the locking shaft assembly (704) can decelerate and brake the coupling turntable (703) by clamping the coupling turntable (703).

2. The speed reducer with a safety self-locking function according to claim 1, wherein: The locking shaft assembly (704) includes: A shoe (7043) which is arranged at the edge position of the coupling turntable (703) and can move radially along the coupling turntable (703), and a clamping groove (7044) is arranged at one end of the shoe (7043) close to the coupling turntable (703); A fixing plate (7040) which is fixed to the tail of the motor main body (1), and the fixing plate (7040) is fixedly connected with the shoe (7043) through a return spring (7041); A driving mechanism which is arranged at the tail of the motor main body (1) and is used for controlling the radial movement of the shoe (7043) along the coupling turntable (703).

3. The speed reducer with a safety self-locking function according to claim 2, characterized in that: Specifically, as shown in FIGS. 14-16, in order to realize the braking of the coupling turntable (703), in this embodiment, a tail housing (701) is arranged at the bottom of the motor main body (1), and the driving mechanism includes: A cylinder (700) which is fixedly installed on the tail housing (701); A chuck (702) which is arranged in the tail housing (701), the center of the chuck (702) is connected with the piston rod of the cylinder (700), the chuck (702) is parallel to the coupling turntable (703), there is a gap between the chuck (702) and the coupling turntable (703), and a wedge-shaped pin (7020) is arranged at one side edge of the chuck (702) close to the coupling turntable (703); Among them, a wedge-shaped socket (7045) is provided on one side of the jaw (7043) close to the chuck (702), and the wedge-shaped pin (7020) corresponds to the wedge-shaped socket (7045) in a fitting manner. When the wedge-shaped pin (7020) is gradually inserted into the wedge-shaped socket (7045), the jaw (7043) can be pushed to move along the radial direction of the coaxial turntable (703) towards the coaxial turntable (703).

4. A speed reducer with a safety self-locking function according to claim 3, characterized in that: A guide groove (101) is provided along the radial direction of the coaxial turntable (703) at the tail of the motor body (1). A slider (7042) adapted to the guide groove (101) is installed on the jaw (7043), and the slider (7042) is slidably assembled in the guide groove (101).

5. A speed reducer with a safety self-locking function according to claim 1, characterized in that: The turntable braking device (4) includes: A chassis (401), which is fixed to the front end of the reduction gearbox (2); A main ring frame (400), which adopts an annular structure and is fixed above the chassis (401). A cavity (4000) is provided on the inner wall of the main ring frame (400); A braking member (402), which is movably assembled in the cavity (4000) and can move along the radial direction of the main ring frame (400); A braking control mechanism (403), which is arranged inside the main ring frame (400) and is used to control the movement of the braking member (402) to realize the braking of the turntable (3).

6. The speed reducer with a safety self-locking function according to claim 5, characterized in that: The braking member (402) has an arc-shaped structure. The braking member (402) is connected to the inner wall of the cavity (4000) through a tension spring (406), so that the braking member (402) has a tendency to move away from the turntable (3) under the action of the tension of the tension spring (406).

7. A speed reducer with a safety self-locking function according to claim 6, characterized in that: One surface of the braking member (402) located inside the cavity (4000) has a wedge surface A (4020). A wedge member (404) is provided at the wedge surface A (4020) of the braking member (402) inside the cavity (4000). One side of the wedge member (404) in contact with the wedge surface A (4020) has a wedge surface B (4040). The wedge member (404) can rotate circumferentially along the main ring frame (400) under the drive of the braking control mechanism (403).

8. A speed reducer with a safety self-locking function according to claim 7, characterized in that: A rotating ring (405) is rotatably installed below the inner wall of the main ring frame (400). The wedge member (404) is fixedly installed on the rotating ring (405). The braking control mechanism (403) can drive the rotation of the rotating ring (405) so that the wedge member (404) can rotate circumferentially along the main ring frame (400).

9. A speed reducer with a safety self-locking function according to claim 8, characterized in that: The braking control mechanism (403) includes: A mounting plate (4031), which is fixedly installed on the chassis (401); A top pressing plate (4032), which is fixedly installed on the inner wall of the rotating ring (405); The electric push rod (4030) is fixedly installed on one side of the mounting plate (4031), and the piston rod of the electric push rod (4030) abuts against one side of the top pressing plate (4032). Such a structural setting enables the swivel ring (405) to rotate by pushing the top pressing plate (4032) when the electric push rod (4030) operates, and further enables the wedge-shaped member (404) to rotate circumferentially along the main ring frame (400).

10. A speed reducer with a safety self-locking function according to claim 8, characterized in that: Limiting blocks (4021) are arranged on both sides of the braking member (402), limiting grooves (4001) are formed in the inner wall of the cavity (4000) along the moving direction of the braking member (402), and the limiting blocks (4021) are slidably assembled in the limiting grooves (4001).

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