Torque transmission system with double-side protection and automatic reset function

Abstract

The invention belongs to the technical field of large-torque hosts, and particularly relates to a double-side protection torque transmission system with an automatic reset function, which comprises an elastic coupling positioned in the middle, an overrun clutch positioned on one side of the elastic coupling and a torque limiter positioned on the other side of the elastic coupling, the elastic coupling is connected with the overrun clutch and the torque limiter through a left flange plate and a right flange plate respectively; the torque limiter can be used for protecting the main engine from being influenced by overload torque in the main engine starting stage, and the main engine is effectively prevented from being damaged; energy saving is achieved, auxiliary equipment is protected, and energy waste and auxiliary equipment loss are avoided; axial displacement can be compensated in the torque transmission process, and the reliability of the system is improved; the service life of the system is prolonged, the maintenance cost is reduced, meanwhile, multiple functions are integrated, the structure is compact, and the use requirement of a large-torque main engine can be met.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-torque main engines, and relates to a torque transmission system with axial compensation function, torque limitation function, overrunning clutch function and easy maintenance, specifically to a torque transmission system with double-sided protection and automatic reset function. Background Art

[0002] With the development of science and technology, high-torque main engines have been widely used in various fields. For high-torque main engines powered by engines or motors, during the start-up phase, the rotational speed of the main engine increases slowly, and auxiliary equipment is required to drive the main engine. However, the torque transmission systems in the prior art cannot effectively protect the main engine from the influence of overload torque, and are prone to damage the main engine.

[0003] In addition, after the main engine operates normally, the existing torque transmission systems cannot cut off the connection with the auxiliary equipment, resulting in energy waste and loss of the auxiliary equipment. At the same time, the replacement and maintenance of elastic elements in the existing torque transmission systems are relatively difficult, affecting the service life and maintenance cost of the systems.

[0004] Therefore, a new type of torque transmission system is needed, which can protect the main engine by using a torque limiter during the start-up phase of the main engine, and cut off the connection with the auxiliary equipment by using an overrunning clutch after the main engine operates normally, so as to achieve energy conservation and protect the auxiliary equipment. The torque transmission system should also have an axial compensation function, and be able to conveniently replace elastic elements, extend the service life and reduce the maintenance cost.

[0005] Disadvantages of the prior art:

[0006] 1. The existing torque transmission systems cannot effectively protect the main engine from the influence of overload torque, and are prone to damage the main engine.

[0007] 2. After the main engine operates normally, the existing torque transmission systems cannot cut off the connection with the auxiliary equipment, resulting in energy waste and loss of the auxiliary equipment.

[0008] 3. The replacement and maintenance of elastic elements in the existing torque transmission systems are relatively difficult, affecting the service life and maintenance cost of the systems.

[0009] 4. The manufacturing process of the structure of the existing elastic couplings is complex and the cost is high.

[0010] 5. The structural layout of the existing torque limiters needs to be optimized, and the overload protection ability and service life need to be improved. Summary of the Invention

[0011] Objective of the Invention: To provide a torque transmission system with bilateral protection and an automatic reset function, and to solve the problems in the existing technology mentioned above, such as the inability to effectively protect the main engine from overload torque, the inability to cut off the connection with auxiliary equipment for energy-saving protection, and the difficulty in replacing and maintaining elastic elements.

[0012] Technical Solution: A torque transmission system with bilateral protection and an automatic reset function, the torque transmission system includes: an elastic coupling (1) located in the middle, an overrunning clutch (2) located on one side of the elastic coupling (1), and a torque limiter (3) located on the other side of the elastic coupling (1);

[0013] The elastic coupling (1) is respectively connected to the overrunning clutch (2) and the torque limiter (3) through a left flange (4) and a right flange (6).

[0014] In a further embodiment, the elastic coupling (1) adopts a flange connection structure, including: an elastic body (5);

[0015] The elastic body (5) is arranged between the left flange (4) and the right flange (6), and can provide an axial compensation function during torque transmission.

[0016] In a further embodiment, when the elastic body (5) needs to be replaced, the left flange (4) and the right flange (6) are disassembled together with the elastic body (5).

[0017] In a further embodiment, the overrunning clutch (2) includes: an outer ring (7) and a first ratchet wheel (10);

[0018] A roller (8) is arranged between the outer ring (7) and the first ratchet wheel (10), a spring pin (9) is arranged between the roller (8) and the first ratchet wheel (10), and the end of the first ratchet wheel (10) is connected to an auxiliary diesel engine.

[0019] In a further embodiment, the overrunning clutch (2) is arranged on the right side of the elastic coupling (1). When the main engine is just started, the rotational speed increases slowly. Start the right-side auxiliary diesel engine. At this time, the first ratchet wheel (10) rotates counterclockwise relative to the outer ring (7), and the roller (8) is stuck in the slots of the outer ring (7) and the first ratchet wheel (10). The first ratchet wheel (10) drives the outer ring (7) to rotate, thereby providing a boosting function for the main engine.

[0020] In a further embodiment, when the rotational speed of the left main engine increases to the normal operating state, the right diesel engine is shut down. At this time, the outer ring (7) rotates counterclockwise relative to the first ratchet wheel (10), and the roller (8) compresses the spring latch (9) to achieve free rolling. At this time, the first ratchet wheel (10) and the outer ring (7) are independent of each other, and the overrunning clutch (2) is used to cut off the connection between the left main engine and the right auxiliary diesel engine, achieving energy conservation and protecting the right auxiliary diesel engine.

[0021] In a further embodiment, the torque limiter (3) is arranged on the left side of the elastic coupling and includes a connecting shaft (11) and a preloading plate (12).

[0022] The connecting shaft (11) is connected to the main engine. The outer side of the connecting shaft (11) is provided with threads. The preloading plate (12) is threadedly connected to the connecting shaft (11). A disc spring (13) is arranged on the right side of the preloading plate (12). By rotating the preloading plate (12), the compression of the disc spring (13) is adjusted to adjust the pre-tightening force so as to set the safety torque. A second ratchet wheel (14) is arranged on the right side of the disc spring (13). A fixing plate (15) is arranged on the right side of the second ratchet wheel (14). Steel balls (16) are arranged between the second ratchet wheel (14) and the fixing plate (15). The fixing plate (15) is provided with a counterbore for placing the steel balls (16).

[0023] In a further embodiment, when the auxiliary diesel engine is working and the transmitted torque exceeds the set safety value, the disc spring (13) will be compressed, and the steel balls (16) will roll out of the counterbore of the fixing plate (15). The second ratchet wheel (14) and the fixing plate (15) will have relative displacement, thereby preventing the torque from being transmitted to the main engine. After continuing to run for a certain angle, the steel balls (16) fall into the next counterbore. If the torque returns to below the safety value at this time, the disc spring (13) resumes its working state, and the steel balls (16) drive the second ratchet wheel (14) and the fixing plate (15) to rotate together to re-transmit the torque.

[0024] Beneficial effects: A torque transmission system with an axial compensation function, a torque limiting function, an overrunning clutch function and convenient replacement of elastic elements is provided. The present invention mainly solves the following technical problems:

[0025] 1. During the starting stage of the main engine, the torque limiter can be used to protect the main engine from the influence of overload torque and effectively prevent damage to the main engine.

[0026] 2. After the main engine runs normally, the connection with the auxiliary equipment can be cut off by using the overrunning clutch to achieve energy conservation and protect the auxiliary equipment, avoiding energy waste and loss of the auxiliary equipment.

[0027] 3. The intermediate elastic coupling has an axial compensation function, which can compensate for axial displacement during torque transmission, improving the reliability of the system;

[0028] 4. Due to the use of the flange connection structure, when replacing the elastomer, the left and right flanges of the elastic coupling can be disassembled together with the elastomer, facilitating maintenance and replacement, extending the service life of the system, and reducing the maintenance cost;

[0029] 5. This torque transmission system integrates multiple functions and has a compact structure, capable of meeting the usage requirements of high-torque main engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the present invention.

[0031] Figure 2 is a schematic diagram of the overrunning clutch of the present invention.

[0032] Figure 3 is a schematic diagram of the torque limiter of the present invention.

[0033] Reference Signs: Side A - right side, Side B - left side.

[0034] Elastic coupling (1), overrunning clutch (2), torque limiter (3), left flange (4), elastomer (5), right flange (6), outer ring (7), roller (8), spring pin (9), first ratchet wheel (10), connecting shaft (11), preloading plate (12), disc spring (13), second ratchet wheel (14), fixing plate (15), steel ball (16). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] A torque transmission system is provided with an axial compensation function, a torque limiting function, an overrunning clutch function, and can conveniently replace elastic elements.

[0037] This torque transmission system includes an intermediate elastic coupling (1), an overrunning clutch (2) on Side A, and a torque limiter (3) on Side B. The elastic coupling (1), the overrunning clutch (2), and the torque limiter (3) are all connected through the left flange (4) and the right flange (6).

[0038] Embodiment 1:

[0039] As Figure 1As shown in the figure, the elastic coupling (1) adopts a flange connection structure, where the elastomer (5) is arranged between the left flange (4) and the right flange (6), and can provide the function of axial compensation during torque transmission. When the elastomer (5) needs to be replaced, the left flange (4) and the right flange (6) can be disassembled together with the elastomer (5), which is convenient for customers to maintain and replace.

[0040] Embodiment 2:

[0041] As Figures 1 to 2 shown in the figure, the core parts of the overrunning clutch (2) are the outer ring (7) and the first ratchet wheel (10). Between the outer ring (7) and the first ratchet wheel (10), there are rollers (8), and between the rollers (8) and the first ratchet wheel (10), there is a spring detent (9). The end of the first ratchet wheel (10) is connected to the A-side booster diesel engine.

[0042] The overrunning clutch (2) is arranged on the A side of the elastic coupling (1). When the main engine just starts, the rotational speed increases slowly. Start the A-side booster diesel engine. At this time, the first ratchet wheel (10) rotates counterclockwise relative to the outer ring (7), and the rollers (8) are stuck in the grooves of the outer ring (7) and the ratchet wheel (10). The first ratchet wheel (10) drives the outer ring (7) to rotate, thereby providing a boosting function for the main engine.

[0043] When the rotational speed of the B-side main engine increases to the normal operating state, the A-side diesel engine can be shut down. At this time, the outer ring (7) rotates counterclockwise relative to the first ratchet wheel (10), and the rollers (8) compress the spring detent (9) to achieve free rolling. At this time, the first ratchet wheel (10) and the outer ring (7) are independent of each other, so that the connection between the B-side main engine and the A-side booster diesel engine is cut off by using the overrunning clutch (2), achieving energy saving and protecting the A-side booster diesel engine.

[0044] Embodiment 3:

[0045] As Figures 1 to 3 shown in the figure, the torque limiter (3) is arranged on the B side of the elastic coupling. The connecting shaft (11) is connected to the main engine. The outside of the connecting shaft (11) is provided with threads, and the preloading plate (12) is connected to the connecting shaft (11) through the threads. A disc spring (13) is arranged on the right side of the preloading plate. By rotating the preloading plate (12), the compression of the disc spring (13) can be adjusted, and the pre-tightening force can be adjusted to set the safety torque. A second ratchet wheel (14) is arranged on the right side of the disc spring (13), a fixing plate (15) is arranged on the right side of the second ratchet wheel (14), steel balls (16) are arranged between the second ratchet wheel (14) and the fixing plate (15), and the fixing plate (15) is provided with a counterbore for placing the steel balls (16).

[0046] When the booster diesel engine is working, if the transmitted torque exceeds the set safety value, the disc spring (13) will be compressed, and the steel ball (16) will roll out of the sinking groove of the fixed plate (15). The second ratchet wheel (14) and the fixed plate (15) will have relative displacement, thus preventing the torque from being transmitted to the main engine. After running a certain angle continuously, the steel ball (16) falls into the next sinking groove. If the torque returns to below the safety value at this time, the disc spring (13) resumes its working state, and the steel ball (16) drives the second ratchet wheel (14) and the fixed plate (15) to rotate together to transmit the torque again. Therefore, the main engine can be effectively prevented from being damaged during this process.

[0047] The safety and economy of the technical solution enable it to have a wide range of applications in application fields that require large main engines, such as mechanical equipment manufacturing, mining, and large ships.

[0048] Firstly, the large main engine itself has a high value, so a device with high safety like this is needed.

[0049] Secondly, the design of disconnecting the force-increasing transmission device from the main engine by the overrunning clutch can reduce the operating cost during normal operation.

[0050] Generally speaking, the torque transmission system of the present invention has broad market demand and application prospects.

[0051] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A torque transmission system with double-side protection and automatic reset function, characterized in that: The torque transmission system comprises: an elastic coupling (1) located in the middle, an overrunning clutch (2) located on one side of the elastic coupling (1), and a torque limiter (3) located on the other side of the elastic coupling (1); The elastic coupling (1) is connected to the overrunning clutch (2) and the torque limiter (3) respectively via a left flange (4) and a right flange (6).

2. A torque transmission system with double-side protection and automatic reset function according to claim 1, characterized in that: The elastic coupling (1) adopts a flange connection structure and comprises: an elastic body (5); The elastic body (5) is arranged between the left flange (4) and the right flange (6), and can provide an axial compensation function during the torque transmission process.

3. A torque transmission system with double-side protection and automatic reset function according to claim 2, characterized in that: When the elastic body (5) needs to be replaced, the left flange (4) and the right flange (6) are disassembled together with the elastic body (5).

4. A torque transmission system with double-side protection and automatic reset function according to claim 1, characterized in that: The overrunning clutch (2) comprises: an outer ring (7) and a first ratchet (10); A roller (8) is provided between the outer ring (7) and the first ratchet (10), a spring lock (9) is provided between the roller (8) and the first ratchet (10), and the first ratchet (10) is connected to the power-assisted diesel engine at one end.

5. A torque transmission system with double-side protection and automatic reset function according to claim 4, characterized in that: The overrunning clutch (2) is arranged on the right side of the elastic coupling (1). When the main engine is just started, the speed increases slowly, and the right-side power-assisted diesel engine is started. At this time, the first ratchet (10) rotates counterclockwise relative to the outer ring (7), and the roller (8) is stuck in the grooves of the outer ring (7) and the first ratchet (10). The first ratchet (10) drives the outer ring (7) to rotate, thereby providing a power-assisted function for the main engine.

6. A torque transmission system with double-side protection and automatic reset function according to claim 4, characterized in that: When the speed of the left main engine is increased to a normal operating state, the right diesel engine is turned off, and the outer ring (7) rotates counterclockwise relative to the first ratchet (10), and the roller (8) compresses the spring (9) to achieve free rolling; at this time, the first ratchet (10) and the outer ring (7) are independent of each other, and the overrunning clutch (2) is used to cut off the connection between the left main engine and the right power-assisted diesel engine, thereby achieving energy saving and protecting the right power-assisted diesel engine.

7. A torque transmission system with double-side protection and automatic reset function according to claim 1, characterized in that: The torque limiter (3) is arranged on the left side of the elastic coupling, and comprises: a connecting shaft (11) and a pre-compression plate (12); The connecting shaft (11) is connected to the main machine, and the outer side of the connecting shaft (11) is provided with a thread. The pre-stressing plate (12) is connected to the connecting shaft (11) by a thread. A disc spring (13) is provided on the right side of the pre-stressing plate (12). The compression of the disc spring (13) is adjusted by rotating the pre-stressing plate (12), and the pre-tightening force is adjusted to set the safety torque. A second ratchet (14) is provided on the right side of the disc spring (13), and a fixing plate (15) is provided on the right side of the second ratchet (14). A steel ball (16) is provided between the second ratchet (14) and the fixing plate (15), and a sink is provided on the fixing plate (15) to place the steel ball (16).

8. A torque transmission system with double-side protection and automatic reset function according to claim 7, characterized in that: When the diesel engine is assisted, when the transmitted torque exceeds the set safety value, the disc spring (13) will be compressed, the steel ball (16) will roll out of the groove of the fixed plate (15), and the second ratchet (14) and the fixed plate (15) will be relatively displaced, thereby preventing the torque from being transmitted to the main engine; after continuing to run for a certain angle, the steel ball (16) falls into the next groove. If the torque returns to the safety value at this time, the disc spring (13) resumes the working state, and the steel ball (16) drives the second ratchet (14) and the fixed plate (15) to rotate together, and the torque is transmitted again.

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