An integrated torque limiting and braking component, a semi-direct drive system, and a scraper conveyor.

Abstract

This invention relates to an integrated torque-limiting and braking assembly, a semi-direct drive system, and a scraper conveyor. The integrated torque-limiting and braking assembly includes an integrated housing, a torque-limiting mechanism and coupling assembly, and a braking mechanism. The torque-limiting mechanism and coupling assembly and the braking mechanism are integrated inside the integrated housing, forming an inner and outer ring nested relationship. The torque-limiting mechanism and coupling assembly is nested inside the braking mechanism, and the outer peripheral surface of the torque-limiting mechanism and coupling assembly is connected to the inner peripheral surface of the braking mechanism via a spline. The integrated torque-limiting and braking assembly, semi-direct drive system, and scraper conveyor of this invention can simplify the structural complexity of semi-direct drive systems, reduce the size of semi-direct drive systems and scraper conveyors, and meet the demand for high space utilization efficiency in the confined space of coal mining faces.

Description

Technical Field

[0001] This invention relates to the technical field of semi-direct drive systems for scraper conveyors; specifically, this invention relates to an integrated torque limiting and braking component, a semi-direct drive system, and a scraper conveyor. Background Technology

[0002] Semi-direct drive systems in the coal mining industry are drive systems that integrate a low-speed, high-torque permanent magnet motor and a short-chain reducer into one unit. They are commonly used in scraper conveyors, coal mining machine cutting sections, and belt conveyors. In the operation of existing semi-direct drive systems, the torque overload control module and the power braking function module are often installed at different positions on the transmission chain of the integrated machine by the torque limiter module and the brake module, respectively, to perform their respective functions.

[0003] This traditional design separates the torque limiter module and the brake module, which has the following disadvantages: the overall structure of the semi-direct drive system is complex and the installation space is large. In the environment of downhole where space is limited and space utilization efficiency is extremely important, it increases the difficulty of equipment installation and maintenance. Summary of the Invention

[0004] In view of this, the present invention provides an integrated torque limiting and braking component, a semi-direct drive system, and a scraper conveyor, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] To achieve the aforementioned objective, a first aspect of the present invention provides an integrated torque limiting and braking assembly, wherein the integrated torque limiting and braking assembly includes an integrated housing, a torque limiting mechanism and coupling assembly, and a braking mechanism. The torque limiting mechanism and coupling assembly and the braking mechanism are integrated inside the integrated housing, and the torque limiting mechanism and coupling assembly and the braking mechanism are in an inner and outer ring nested relationship. The torque limiting mechanism and coupling assembly is nested inside the braking mechanism, and the outer peripheral surface of the torque limiting mechanism and coupling assembly is connected to the inner peripheral surface of the braking mechanism by a spline.

[0006] In the torque limiting and braking integrated assembly described above, optionally, the integrated housing includes a main housing, a positioning bearing, and a positioning bearing seat cover plate. The main housing is a hollow cylindrical shape, and flanges are respectively provided at both ends of the outer surface of the main housing. The flanges have connecting through holes. The positioning bearing seat cover plate is a disc shape with a shaft hole. The positioning bearing seat cover plate is installed at one end of the main housing through its outer periphery. The positioning bearing is installed in the shaft hole of the positioning bearing seat cover plate. The integrated housing constitutes a cavity structure for accommodating the torque limiting mechanism and coupling assembly and the braking mechanism.

[0007] In the aforementioned torque limiting and braking integrated assembly, optionally, the torque limiting mechanism and coupling assembly includes a torque limiting mechanism, which includes an input shaft, a locking bolt, a torque limiting locking disc, an elastic component, a friction plate group, a driven plate group, an axial locking disc, and a torque limiting output disc. The friction plate group and the driven plate group are annular, with the outer ring diameter of the friction plate group being smaller than that of the driven plate group. The friction plate group and the driven plate group are arranged in a staggered pattern, with each plate fitting against the others. The locking bolt sequentially connects the torque limiting locking disc, the driven plate group, and the torque limiting output disc. The torque limiting locking disc and the axial locking disc axially press the friction plate group and the driven plate group together via the elastic component. The inner circumferential surfaces of the input shaft and the friction plate group are connected by a spline, and the inner ring diameter of the driven plate group is larger than the outer diameter of the input shaft.

[0008] In the aforementioned torque limiting and braking integrated assembly, optionally, the torque limiting mechanism and coupling assembly further includes a coupling, the coupling including the torque limiting output disc, the coupling output disc and a buffer block, the coupling output disc having an external tooth shape, the torque limiting output disc having an internal tooth shape structure, the coupling output disc and the torque limiting output disc being mutually connected and fitted, and the buffer block being disposed in the gap between the external teeth of the coupling output disc and the internal teeth of the torque limiting output disc.

[0009] In the torque-limiting braking integrated assembly described above, the buffer block may optionally be a rubber block.

[0010] In the torque limiting and braking integrated assembly described above, optionally, the elastic component includes an adjusting spring and a spring cup. The adjusting spring is disposed inside the spring cup. One end of the adjusting spring abuts against the torque limiting locking disc, and the other end abuts against the bottom of the spring cup. The opening of the spring cup is provided with a pressing edge, which abuts against the driven plate assembly and applies a preload.

[0011] In the torque limiting and braking integrated assembly described above, optionally, the braking mechanism includes a housing end cover, a double roller self-aligning bearing, and an electromagnetic braking drive unit. The housing end cover is fixedly connected to the integrated housing. The housing end cover is disc-shaped with a shaft hole. The double roller self-aligning bearing is installed in the shaft hole. The housing end cover and the integrated housing form a cavity structure that can accommodate the electromagnetic braking drive unit. The electromagnetic braking drive unit is connected to the output side of the torque limiting mechanism and coupling assembly to realize the braking function.

[0012] In the aforementioned torque-limiting braking integrated assembly, optionally, the braking mechanism is a jaw brake. The electromagnetic braking drive unit includes an electromagnetic induction coil, a jaw ring assembly, a jaw ring connecting disc, a return spring, and a return spring seat cover. The electromagnetic induction coil is embedded in the housing end cover. The jaw ring assembly includes a first jaw ring and a second jaw ring that are normally open and facing each other. The first jaw ring is fixed to the housing end cover, and the second jaw ring is fixed to the jaw ring connecting disc. The return spring is disposed inside the return spring seat cover. The first end of the return spring abuts against the jaw ring connecting disc, and the second end of the return spring abuts against the bottom of the return spring seat cover. The return spring seat cover is fixed to the torque-limiting mechanism and coupling assembly. When the electromagnetic induction coil is energized, it attracts the jaw ring connecting disc, driving the first jaw ring and the second jaw ring to engage. The inner circumferential surface of the jaw ring connecting disc is connected to the outer circumferential surface of the torque-limiting mechanism and coupling assembly via a spline.

[0013] To achieve the aforementioned objective, a second aspect of the present invention provides a semi-direct drive system, the semi-direct drive system comprising a motor, a reducer, and an integrated torque limiting and braking assembly as described in any one of the first aspects above, wherein the coupling in the torque limiting mechanism and coupling assembly is connected to the motor, the torque limiting mechanism in the torque limiting mechanism and coupling assembly is connected to the reducer, and the integrated housing of the integrated torque limiting and braking assembly is fixed between the housing of the motor and the housing of the reducer.

[0014] To achieve the aforementioned objective, a third aspect of the present invention provides a scraper conveyor comprising a semi-direct drive system as described in the second aspect above.

[0015] The torque limiting and braking integrated component of the present invention integrates the torque limiting mechanism, coupling and braking mechanism in an integrated housing. The torque limiting mechanism and braking mechanism are nested together to form a parallel power transmission structure, which simplifies the number of components, reduces the complexity of the combined structure of the semi-direct drive system, and reduces the overall size of the semi-direct drive system and scraper conveyor, thus meeting the needs of system integration and equipment miniaturization design.

[0016] In further optional technical solutions of the present invention, a friction torque limiter is used to protect the system for smooth operation and avoid overload impact; a jaw brake is used to quickly respond to braking commands and improve the dynamic performance of the system; and a buffer block is used to absorb system impact, thereby improving the reliability of the semi-direct drive system. In other optional technical solutions, the torque limiting mechanism and coupling assembly, along with the braking mechanism, are mounted in an integrated housing using double roller self-aligning bearings and positioning bearings. The coupling enables automatic alignment of the integrated torque limiting and braking assembly with the motor shaft, improving the operational stability and service life of the semi-direct drive system. In other optional technical solutions, the torque limiting mechanism achieves fine adjustment of the torque limiting force through elastic components and locking bolts, improving the adaptability of the device structure to different application scenarios and making it widely applicable to various industrial fields with strict performance requirements for semi-direct drive systems.

[0017] The present invention further provides a semi-direct drive system comprising an integrated torque limiting and braking assembly as described in any one of the first aspects above, and a scraper conveyor comprising a semi-direct drive system as described in the second aspect above, thus the semi-direct drive system and the scraper conveyor also have the above-mentioned advantages. Attached Figure Description

[0018] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0019] Figure 1 This is a structural diagram of an embodiment of the torque-limiting and braking integrated assembly according to the present invention;

[0020] Figure 2 This is a structural diagram of an embodiment of the integrated housing according to the present invention;

[0021] Figure 3 This is a structural diagram of an embodiment of the torque limiting mechanism and coupling assembly according to the present invention;

[0022] Figure 4 This is a structural diagram of an embodiment of the braking mechanism according to the present invention;

[0023] Figure 5 This is a schematic diagram showing the normally open state and braking state of a braking mechanism according to an embodiment of the present invention;

[0024] Figure 6 This is a cross-sectional view of an embodiment of the torque-limiting braking integrated assembly according to the present invention;

[0025] Figure 7 This is a structural diagram of an embodiment of the semi-direct drive system according to the present invention.

[0026] Reference numerals: 31-Integrated housing; 32-Torque limiting mechanism and coupling assembly; 33-Brake mechanism; 311-Main housing; 312-Positioning bearing seat cover plate; 313-Positioning bearing; 321-Torque limiting locking disc; 322-Locking bolt; 323-Input shaft; 324-Adjusting spring; 325-Spring cup; 326-Friction pad assembly; 327-Driven pad assembly; 328-Axial locking disc; 329-Torque limiting output disc; 330-Coupling output disc; 340-Buffer block; 331-Housing end cover; 332-Double roller self-aligning bearing; 333-Electromagnetic induction coil; 334-Reset spring; 335-Dog clutch assembly; 336-Dog clutch connecting disc; 337-Reset spring seat cover; 338-Bolt; 01-Connecting transition plate; 02-Reducer; 03-Torque limiting and braking integrated assembly; 04-Motor; 05-Variable frequency cabinet. Detailed Implementation

[0027] Scraper conveyors are commonly used conveying devices in coal mine working faces and tunneling faces. Due to the limited effective working space underground in coal mines, there are high requirements for the size of scraper conveyors. Among them, the scraper head is the largest component of the entire machine. For semi-direct drive systems located at the scraper head, its size parameters have become a key factor restricting the adaptability of the scraper conveyor to different working environments.

[0028] In existing technologies, semi-direct drive systems often install the torque limiting mechanism and braking mechanism at different positions in the drive chain, achieving their respective functions through series transmission and braking on the drive chain. This design results in an excessively large axial dimension for the semi-direct drive system, reducing its compatibility with scraper conveyors and occupying significant underground working space, causing inconvenience for personnel passage and material transportation at coal mine working faces and tunneling faces. Therefore, the traditional axial series arrangement of the torque limiting and braking mechanisms is insufficient to meet the target requirements for underground coal mine applications.

[0029] Based on this, the main design concept of this invention lies in changing the existing arrangement of the torque limiting mechanism and the braking mechanism, integrating the torque limiting mechanism, coupling, and braking mechanism into a single housing. The torque limiting mechanism and the braking mechanism are nested together to form a parallel power transmission structure. This not only simplifies the number of components and reduces the complexity of the combined structure and axial dimensions of the semi-direct drive system, but also reduces the overall volume of the semi-direct drive system and the scraper conveyor, thus meeting the needs of coal mine working faces and tunneling faces for system integration and equipment miniaturization design.

[0030] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the torque-limiting braking integrated component, semi-direct drive system, and scraper conveyor of the present invention will be described by way of example below. However, all descriptions should not be construed as limiting the present invention in any way.

[0031] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of this description.

[0032] It should also be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship of an embodiment of the torque limiting braking integrated component according to the present invention shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this disclosure.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0034] Figure 1 This is a structural diagram of an embodiment of the torque-limiting braking integrated assembly according to the present invention.

[0035] like Figure 1 As shown, the torque limiting and braking integrated assembly may include an integrated housing 31, a torque limiting mechanism and coupling assembly 32, and a braking mechanism 33. The figure shows the integrated housing 31, torque limiting mechanism and coupling assembly 32, and braking mechanism 33 of the integrated device in exploded view.

[0036] As shown in the figure, the integrated housing 31 is cylindrical, with one end open and the other end being a positioning bearing seat cover plate with a shaft hole. The outer periphery of both end faces of the integrated housing 31 is provided with flange structures with through holes for connecting reducers or motors via bolts or other components. The integrated housing 31 has an internal cavity structure that can accommodate the torque limiting mechanism and coupling assembly 32 and the braking mechanism 33; that is, the torque limiting mechanism and coupling assembly 32 and the braking mechanism 33 are integrated inside the integrated housing 31.

[0037] In an optional embodiment, the integrated housing 31 can be made of high-strength alloy material, which has good heat dissipation performance and mechanical protection capabilities, improving the safety of the entire device and thus improving the operational stability of the drive system and the whole machine.

[0038] Meanwhile, this highly integrated and reliable integrated structure can adjust the size of the integrated housing 31 and its internal torque limiting mechanism, coupling assembly 32 and braking mechanism 33 according to the interface conditions and operational requirements of different systems, thereby adapting to various industries and working environments.

[0039] Figure 2 This is a structural diagram of an embodiment of the integrated housing according to the present invention. In this figure, the left side shows the assembled integrated housing, and the right side shows the disassembled integrated housing.

[0040] As shown in the figure, the integrated housing 31 may include a positioning bearing seat cover plate 312, a positioning bearing 313, and a main housing 311. Referring to the assembly and exploded views in the figure, it can be seen that the main housing 311 is a hollow cylindrical shape, the positioning bearing seat cover plate 312 is a disc shape with a shaft hole, the positioning bearing 313 is installed in the shaft hole of the positioning bearing seat cover plate 312, and the positioning bearing seat cover plate 312 is connected to the main housing 311 through its outer periphery, forming a cylindrical cavity structure with through holes.

[0041] In an optional embodiment, the positioning bearing seat cover 312 and the main housing 311 are connected together by bolts. In other optional embodiments, different fixing connection methods may also be used.

[0042] As can be seen from the figure, flanges are provided on the outer periphery of both end faces of the main housing 311. The flanges have multiple through holes for connection and installation with other components of the drive system.

[0043] This structure provides reliable protection and positioning for the components inside the integrated housing 31, which helps improve the operational stability of the drive system and the whole machine.

[0044] Figure 3 This is a structural diagram of an embodiment of the torque limiting mechanism and coupling assembly according to the present invention. The diagram shows the disassembled torque limiting mechanism and coupling assembly, and a partially enlarged view of the assembled coupling assembly is shown in the upper right leader box.

[0045] As shown in the figure, the torque limiting mechanism of this embodiment may include a locking bolt 322, a torque limiting locking disc 321, an input shaft 323, an adjusting spring 324, a spring cup 325, a friction plate assembly 326, a driven plate assembly 327, an axial locking disc 328, and a torque limiting output disc 329. The coupling may include a torque limiting output disc 329, a buffer block 340, and a coupling output disc 330, wherein the torque limiting output disc 329 is a shared element of the torque limiting mechanism and the coupling. This structural composition integrates the torque limiting mechanism and the coupling into one unit, simplifying the number of parts and reducing the size and weight.

[0046] According to the illustrated example, the torque limiting locking disc 321, the driven plate group 327, and the torque limiting output disc 329 in the torque limiting mechanism are sequentially connected by locking bolts 322. The locking bolts 322 serve as an adjustment device, allowing for fine adjustment of the torque limiting force during installation according to actual needs. In other optional embodiments, other components can also be used as adjustment devices.

[0047] Both the friction plate assembly 326 and the driven plate assembly 327 are annular, placed at intervals and in close contact with each other. The outer diameter of the driven plate assembly 327 is larger than that of the friction plate assembly 326. The friction plate assembly 326 can be made of a high-temperature resistant, high-friction coefficient composite material. The input shaft 323 passes through the inner circumference of the friction plate assembly 326, and is connected to the inner circumference of the friction plate assembly 326 via splines on its outer circumference surface, thereby driving the friction plate assembly 326 to rotate with the input shaft. The inner diameter of the driven plate assembly 327 is larger than that of the input shaft 323, and there is no direct power transmission relationship between them.

[0048] The axial locking disc 328 is connected and fixed to the input shaft 323, thereby axially locking the friction plate assembly 326 to the input shaft 323 and preventing the friction plate assembly 326 from falling off the input shaft 323. The torque limiting locking disc 321 and the axial locking disc 328 axially press the friction plate assembly 326 and the driven plate assembly 327 together. The adjusting spring 324 is disposed inside the spring cup 325. One end of the spring cup 325 has a bottom end, and the outer periphery of the opening at the other end has a pressing edge. One end of the adjusting spring 324 abuts against the bottom end of the spring cup 325, and the other end abuts against the torque limiting locking disc 321. The spring cup 325 abuts against the driven plate assembly 327 through the pressing edge of the opening, thereby applying an axial preload to the friction plate assembly 326 and the driven plate assembly 327. During the torque limiting process, if the torque is too large, the friction plate group 326 and the driven plate group 327 will automatically adjust their relative frictional sliding to ensure the smooth operation of the system and avoid overload impact.

[0049] In this embodiment, one end of the adjusting spring 324 rests against the torque limiting locking disc 321, and the other end rests against the bottom of the spring cup 325. Then, the friction plate assembly 326 is pressed against the pressing edge of the spring cup opening. The adjusting bolt can be fixed while the height of the spring can be adjusted to generate different pressure compensations. At the same time, different spring combinations can also obtain corresponding pressures.

[0050] During the module assembly stage, the friction plate group 326 and the driven plate group 327 of the torque limiting mechanism are first installed in the corresponding cavities of the integrated housing 31 in a predetermined order. This ensures the accurate positioning of the adjusting spring 324 and the spring cup 325. The adjusting device is then adjusted to its initial setting state, enabling the friction plate group 326 and the driven plate group 327 to possess the set torque limiting capability. In other optional embodiments, other elastic elements or components can also be used to achieve the same effect. For example... Figure 3 The adjustment device and elastic components shown can flexibly adjust the required limiting torque during installation, improving adaptability to different working environments and operating requirements.

[0051] like Figure 3 As shown, the torque limiting output disc 329 in the coupling has an internal tooth structure, and the coupling output disc 330 has an external tooth structure. The torque limiting output disc 329 and the coupling output disc 330 are fitted together by end faces, with the internal and external teeth interlocking. A buffer block 340 is provided in the gap between the internal and external teeth to absorb system impacts. The assembled coupling is as follows: Figure 3 The enlarged view is shown in the image.

[0052] In an optional embodiment, the buffer block 340 is not connected to the torque limiting output disc 329 and the coupling output disc 330, and is freely placed in the fitting gap, facilitating timely replacement according to different working environments and requirements. In other optional embodiments, the buffer block 340 can also be connected to the torque limiting output disc 329 or the coupling output disc 330, as long as it meets the requirements for shock absorption. The material of the buffer block 340 can be rubber, polyurethane, or other materials that meet the working requirements. Compared to the existing integrated plum blossom-shaped buffer pad, the individually set buffer blocks in the illustrated example are easy to replace and can be combined in different types, which can reduce axial friction.

[0053] Incorporating a buffer-equipped coupling into the torque limiting mechanism facilitates automatic alignment between the torque limiting mechanism and the rotating shaft, and mitigates impacts. Furthermore, the use of different buffer materials allows for the absorption of complex impacts, making it widely applicable to various industrial fields with stringent performance requirements for semi-direct drive systems, ensuring the smooth operation of the drive system and the entire machine.

[0054] Figure 4 This is a structural diagram of an embodiment of the braking mechanism according to the present invention. Figure 5 This is a schematic diagram showing the normally open state and the braking state of an embodiment of the braking mechanism according to the present invention. Figure 4 In the diagram, the upper left image shows the assembled braking mechanism, and the right image shows the disassembled braking mechanism; the lower left image is a cross-sectional view of the assembled braking mechanism.

[0055] In an optional embodiment, the braking mechanism may include a toothed ring connecting disc 336, a toothed ring assembly 335, a return spring 334, a return spring seat cover 337, a bolt 338, an electromagnetic induction coil 333, a double roller self-aligning bearing 332, and a housing end cover 331.

[0056] The toothed ring assembly 335 may include a first toothed ring and a second toothed ring arranged opposite each other. An annular groove is provided on the housing end cap 331. The electromagnetic induction coil 333 and the first toothed ring are embedded in the annular groove. The housing end cap 331 and the double roller self-aligning bearing 332 are tightly fitted together. The second toothed ring is connected to the toothed ring connecting plate 336. A return spring 334 is disposed inside the return spring seat cover 337. One end of the return spring 334 abuts against the toothed ring connecting plate 336, and the other end abuts against the bottom of the return spring seat cover 337. The return spring seat cover 337 is connected to the torque limiting mechanism and coupling assembly 32 by bolts 338.

[0057] In other alternative embodiments, the return spring 334 and the return spring seat cover 337 can be replaced with other elastic elements or components that can achieve the reset effect on the toothed ring connecting disc 336. The bolt 338 can also be replaced with other fixing connection methods. The toothed ring assembly 335 can be made of lightweight high-strength alloy, which can reduce the overall weight while ensuring braking performance.

[0058] Combination Figure 6 As can be seen, the housing end cover 331 can be fixedly connected to the main housing 311 of the integrated housing 31 by bolts or other means to form a complete housing, enclosing a cavity structure that can accommodate these components. The inner circumferential surface of the toothed ring connecting disc 336 is provided with splines, which are connected to the splines on the outer circumferential surface of the torque limiting output disc 329 in the torque limiting mechanism and coupling assembly 32 to complete the transmission of power and braking. The housing end cover 331 is a disc with a shaft hole, and the double roller self-aligning bearing 332 is installed on the shaft hole. The double roller self-aligning bearing 332 and the positioning bearing 313 of the integrated housing 31 serve as front and rear positioning bearings, which can realize the automatic alignment of the torque limiting mechanism and coupling assembly 32, the braking mechanism 33 and the motor shaft, improving the operational stability, reliability and service life of the drive system and the whole machine.

[0059] like Figure 5 As shown, the braking mechanism is in the normally open state by default. The gap between the first and second toothed rings is limited to a set position by the return spring 334 and the spline on the toothed ring connecting disc 336. A small gap is maintained between the toothed ring groups. In an optional embodiment, the gap size is 1~1.5mm. In other optional embodiments, the gap size is selected according to the actual working conditions.

[0060] When energized, the braking mechanism switches to a braking state. In an optional embodiment, the electromagnetic induction coil 333 is connected to the controller via a cable. When energized, it generates an attractive force. In other optional embodiments, other energizing and control methods can also be used. When the electromagnetic induction coil 333 is energized, the engaging toothed ring connecting plate 336 slides along the spline. The toothed ring connecting plate 336 drives the second toothed ring to engage with the first toothed ring, synchronizing the housing end cover 331 with the toothed ring connecting plate 336, generating a braking torque to brake the system.

[0061] When the brakes are released, the electromagnetic induction coil 333 is de-energized, releasing the toothed ring connecting plate 336. Under the action of the return spring 334, the first toothed ring disengages from the second toothed ring while maintaining a gap, returning to the normally open mode. This braking mode can quickly respond to braking commands and effectively improve the dynamic performance of the system.

[0062] Figure 6 This is a cross-sectional view of an embodiment of the torque-limiting braking integrated assembly according to the present invention.

[0063] from Figure 6 As can be seen, the torque limiting mechanism and coupling assembly 32 and the braking mechanism 33 are integrated inside the integrated housing 31. Furthermore, the torque limiting mechanism and coupling assembly 32 and the braking mechanism 33 are nested in an inner-outer ring relationship, with the torque limiting mechanism and coupling assembly 32 nested inside the braking mechanism 33. Both the outer circumferential surface of the torque limiting mechanism and coupling assembly 32 and the inner circumferential surface of the braking mechanism 33 are provided with splines, and the two components are connected by splines. A spline is a mechanical connection structure composed of internal and external splines, and the transmission function is achieved by machining multi-tooth structures on the inner and outer circumferential surfaces of the two connecting parts.

[0064] This integrated relationship transforms the original serial distributed power transmission structure into a parallel power transmission structure, reducing the power transmission path and energy loss between the torque limiting mechanism and the braking mechanism. At the same time, it can quickly and accurately achieve effective braking of the system in emergency braking needs, better meeting the needs of some application scenarios with demanding dynamic performance requirements, such as semi-direct drive scraper integrated machines, wind power generator reducers, and industrial robot joint drives, for efficient and stable semi-direct drive systems.

[0065] In addition, this power transmission structure reduces the requirements for the precision of the fit between the components, and is less likely to cause problems such as reduced transmission efficiency, delayed braking response, and reduced sealing due to loose connections or wear between components, thus improving the stability and reliability of the entire semi-direct drive system.

[0066] At the same time, such a connection simplifies the overall structural complexity, reduces the size of the device, and achieves miniaturization. In environments like mines where space is extremely limited and space utilization efficiency is critical, it can reduce the difficulty of equipment installation and maintenance.

[0067] Figure 7 This is a structural diagram of an embodiment of the semi-direct drive system according to the present invention.

[0068] In this embodiment, the semi-direct drive system may include a connecting transition plate 01, a reducer 02, a torque limiting and braking integrated assembly 03, a motor 04, and a frequency converter cabinet 05. Combined with... Figure 6 It is understood that the torque limiting and braking integrated component 03 is connected to the reducer 02 via the spline of the input shaft 323, and to the motor 04 via the spline of the coupling output disc 330. The frequency converter cabinet 05 is connected to the motor 04. The semi-direct drive system is fixedly connected to the whole machine via the through hole on the integrated housing 31 of the torque limiting and braking integrated component 03 and the connecting transition plate 01. The integrated housing 31 of the torque limiting and braking integrated component 03 is fixed between the housing of the motor 04 and the housing of the reducer 02. In other optional embodiments, other connection methods that meet the requirements can also be used. Installing the torque limiting and braking integrated component 03 on the power output shaft of the semi-direct drive system can meet the coaxiality requirements. At the same time, when the system receives a stop command or an emergency fault requires braking, the output shaft can be braked, improving the reliability and stability of the drive system and the whole machine.

[0069] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. An integrated assembly of torque limiting brake (03) characterized by, The torque-limiting brake integrated assembly (03) comprises an integrated shell (31), a torque-limiting mechanism and a shaft coupling combination (32), and a brake mechanism (33), wherein the torque-limiting mechanism and the shaft coupling combination (32) and the brake mechanism (33) are integrated inside the integrated shell (31), the torque-limiting mechanism and the shaft coupling combination (32) and the brake mechanism (33) are in an inner-outer ring nesting relationship, the torque-limiting mechanism and the shaft coupling combination (32) are nested on the inner side of the brake mechanism (33), and the outer peripheral surface of the torque-limiting mechanism and the shaft coupling combination (32) is connected with the inner peripheral surface of the brake mechanism (33) through a spline connection; The brake mechanism (33) comprises a shell end cover (331), a double-roller self-aligning bearing (332), and an electromagnetic brake driving unit, the shell end cover (331) is fixedly connected with the integrated shell (31), the shell end cover (331) is in the shape of a disc with an axle hole, the double-roller self-aligning bearing (332) is installed in the axle hole, and the shell end cover (331) and the integrated shell (31) form a cavity structure capable of accommodating the electromagnetic brake driving unit, and the electromagnetic brake driving unit is connected to the output side of the torque-limiting mechanism and the shaft coupling combination (32) for realizing the brake function; The brake mechanism (33) is a toothed clamping brake, the electromagnetic brake driving unit comprises an electromagnetic induction coil (333), a toothed clamping ring group (335), a toothed clamping ring connecting disc (336), a reset spring (334), and a reset spring seat cover (337), the electromagnetic induction coil (333) is embedded in the shell end cover (331), the toothed clamping ring group (335) comprises a first toothed clamping ring and a second toothed clamping ring which are oppositely arranged in an open state, the first toothed clamping ring is fixed to the shell end cover (331), the second toothed clamping ring is fixed to the toothed clamping ring connecting disc (336), the reset spring (334) is arranged inside the reset spring seat cover (337), a first end of the reset spring (334) abuts against the toothed clamping ring connecting disc (336), a second end of the reset spring (334) abuts against the bottom of the reset spring seat cover (337), the reset spring seat cover (337) is fixed to the torque-limiting mechanism and the shaft coupling combination (32), and the electromagnetic induction coil (333) attracts the toothed clamping ring connecting disc (336) when energized, drives the first toothed clamping ring to engage with the second toothed clamping ring, and the inner peripheral surface of the toothed clamping ring connecting disc (336) is connected with the outer peripheral surface of the torque-limiting mechanism and the shaft coupling combination (32) through a spline connection.

2. The torque-limiting brake integrated assembly (03) according to claim 1, characterized in that, The integrated housing (31) comprises a main shell (311), a locating bearing (313) and a locating bearing cover plate (312), the main shell (311) is a hollow cylinder, the outer surface of the main shell (311) is provided with a flange at both ends, the flange has a connecting through hole, the locating bearing cover plate (312) is disc-shaped with a shaft hole, the locating bearing cover plate (312) is mounted on one end of the main shell (311) through the outer periphery, and the locating bearing (313) is mounted in the shaft hole of the locating bearing cover plate (312). The integrated housing (31) constitutes a cavity structure for accommodating the torque limiting mechanism and coupling combination (32) and the brake mechanism (33).

3. The torque-limiting brake integrated assembly (03) according to claim 1, characterized in that, The torque limiting mechanism and coupling combination (32) comprises a torque limiting mechanism, the torque limiting mechanism comprises an input shaft (323), a locking bolt (322), a torque limiting locking disc (321), an elastic assembly, a friction plate group (326), a driven plate group (327), an axial locking disc (328) and a torque limiting output disc (329), wherein the friction plate group (326) and the driven plate group (327) are circular rings, the outer ring diameter of the friction plate group (326) is smaller than the outer ring diameter of the driven plate group (327), the friction plate group (326) and the driven plate group (327) are arranged in sequence with the plates being spaced apart, and each plate is in contact with each other, the locking bolt (322) is connected to the torque limiting locking disc (321), the driven plate group (327) and the torque limiting output disc (329) in sequence, the torque limiting locking disc (321) and the axial locking disc (328) axially press the friction plate group (326) and the driven plate group (327) through the elastic assembly, and the inner peripheral surface of the input shaft (323) and the friction plate group (326) are connected through splines, and the inner ring diameter of the driven plate group (327) is greater than the outer diameter of the input shaft (323).

4. The torque-limiting brake integrated assembly (03) according to claim 3, characterized in that, The torque limiting mechanism and coupling combination (32) further comprises a coupling, the coupling comprises the torque limiting output disc (329), a coupling output disc (330) and a buffer block (340), the coupling output disc (330) is externally toothed, the torque limiting output disc (329) has an internally toothed structure, the coupling output disc (330) and the torque limiting output disc (329) are connected and fitted with each other, and the buffer block (340) is arranged in the gap between the external teeth of the coupling output disc (330) and the internal teeth of the torque limiting output disc (329).

5. The torque-limiting brake integrated assembly (03) according to claim 4, characterized in that, The buffer block (340) is a rubber block.

6. The torque-limiting brake integrated assembly (03) according to claim 3, characterized in that, The elastic assembly comprises an adjusting spring (324) and a spring cup (325), the adjusting spring (324) is arranged in the spring cup (325), one end of the adjusting spring (324) is in abutment with the torque limiting locking disc (321), the other end is in abutment with the bottom of the spring cup (325), and the cup opening of the spring cup (325) is provided with a pressing edge, the pressing edge is in abutment with the driven plate group (327) and applies a pre-tightening force.

7. A semi-direct drive system, characterized by, The semi-direct drive system comprises a motor (04), a reducer (02), and the torque-limited brake integrated assembly (03) as claimed in any one of claims 1 to 6, wherein the motor (04) is connected by the shaft coupling in the torque-limited mechanism and shaft coupling combination (32), the reducer (02) is connected by the torque-limited mechanism in the torque-limited mechanism and shaft coupling combination (32), and the integrated shell (31) of the torque-limited brake integrated assembly (03) is fixed between the shell of the motor (04) and the shell of the reducer (02).

8. A screed machine characterized by The scraper machine comprises the semi-direct drive system as claimed in claim 7.

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