A high-temperature resistant friction torque limiter for heavy-duty equipment

Abstract

This utility model belongs to the field of heavy equipment transmission control technology, and in particular, it is a high-temperature resistant friction torque limiter for heavy equipment. It includes a drive motor, a gearbox, a left turntable, a right turntable, a left friction ring, a right friction ring, a support and guide assembly, a preload adjustment assembly, and an auxiliary heat dissipation assembly. The drive motor and gearbox are fixedly mounted on the same base. The left and right turntables are respectively mounted on the output shaft of the drive motor and the input shaft of the gearbox, and are located on the same axis. The left friction ring is detachably mounted on the left turntable by multiple bolts, and the support and guide assembly is located on the right turntable. This utility model has a reasonable design, is simple and convenient to operate, has reliable torque transmission and convenient preload adjustment functions, and also has good heat dissipation performance and ease of maintenance, meeting the stable operation requirements of heavy equipment under high temperature and high load environments.

Description

Technical Field

[0001] This utility model relates to the field of heavy equipment transmission control technology, and in particular to a high-temperature resistant friction torque limiter for heavy equipment. Background Technology

[0002] In heavy equipment transmission systems, friction torque limiters are core components that ensure stable torque transmission under fluctuating loads and prevent equipment overload damage. However, existing friction torque limiters generally suffer from three major problems: First, the preload adjustment structure is complex, making it difficult to synchronously and accurately control the contact pressure, and it cannot flexibly adapt to the torque transmission requirements under different load conditions. The adjustment operation is also inconvenient in complex installation sites. Second, the heat dissipation performance is insufficient. The heat generated by friction easily accumulates in the contact area, especially under high-temperature conditions, which can easily lead to a decrease in the coefficient of friction, degradation of component performance, and even equipment shutdown, thus restricting its reliability and applicability under high loads and complex operating conditions in heavy equipment.

[0003] Therefore, this utility model proposes a high-temperature resistant heavy equipment friction torque limiter to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a high-temperature resistant friction torque limiter for heavy equipment.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-temperature resistant heavy equipment friction torque limiter, comprising a drive motor, a gearbox, a left turntable, a right turntable, a left friction ring, a right friction ring, a support guide assembly, a preload adjustment assembly, and an auxiliary heat dissipation assembly;

[0007] The drive motor and gearbox are fixedly mounted on the same base. The left and right turntables are respectively mounted on the output shaft of the drive motor and the input shaft of the gearbox and are located on the same axis. The left friction ring is detachably mounted on the left turntable by multiple bolts. The support guide assembly is set on the right turntable, and the right friction ring is detachably mounted on the support guide assembly by multiple bolts and abuts against the left friction ring. A rotating housing is rotatably mounted on the side of the right turntable away from the left turntable. The preload adjustment assembly is set inside the rotating housing and connected to the right turntable and the support guide assembly. The auxiliary heat dissipation assembly is set on the side of the right turntable close to the left turntable.

[0008] Preferably, the support guide assembly includes a mounting ring, a fixing ring, multiple support rods, a limiting ring, and multiple springs. Multiple support rods are slidably mounted on the right turntable in a circular array centered on the axis of the right turntable. The same mounting ring is fixedly mounted on the end of the multiple support rods near the left turntable. A right friction ring is detachably mounted on the side of the mounting ring near the left turntable by multiple bolts. The same limiting ring is fixedly mounted on the end of the multiple support rods away from the left turntable. The same fixing ring is slidably mounted on the multiple support rods. Multiple springs are fixedly mounted on the fixing ring, each movably sleeved on the outside of the corresponding support rod. The ends of the multiple springs away from the fixing ring are all fixedly mounted on the right turntable.

[0009] Preferably, the preload adjustment assembly includes multiple lead screws, multiple gears, a gear disc, and multiple threaded sleeves. Multiple lead screws arranged in a circular array around the axis of the right turntable are rotatably mounted on the side of the right turntable away from the left turntable. Each lead screw passes through a limiting ring and is respectively fixedly fitted with a gear. A gear disc that meshes with multiple gears is fixedly mounted on the inner wall of the rotating housing. Multiple threaded sleeves that are threadedly connected to the corresponding lead screws are fixedly mounted on the fixing ring.

[0010] Preferably, the outer periphery of the rotating housing is provided with a plurality of equidistant limiting holes, and a limiting bolt is threaded onto the right turntable, the limiting bolt being inserted into the corresponding limiting hole.

[0011] Preferably, the auxiliary heat dissipation component includes multiple through holes and multiple baffles. Multiple through holes are provided on the right turntable, and multiple baffles that are inclined are fixedly installed on the side of the right turntable near the left turntable. The multiple baffles and multiple through holes are arranged in a circular array with the axis of the right turntable as the center, and the distance between the baffles and the axis of the right turntable is greater than the distance between the through holes and the axis of the right turntable.

[0012] Preferably, the axis of the through hole is curved and intersects the axis of the left turntable.

[0013] Preferably, a ring-shaped mesh plate is slidably installed on the side of the rotating housing away from the right turntable, and the gap between the mesh plate and the gearbox input shaft is 0.1-0.5mm.

[0014] Preferably, an anti-slip ring is fixedly installed on the outer periphery of the rotating housing, and the surface of the anti-slip ring is provided with uniformly distributed anti-slip patterns.

[0015] Preferably, a plurality of bolt heads are fixedly installed on the side of the rotating housing away from the right turntable.

[0016] Preferably, the output shaft of the drive motor is connected to the left turntable via a spline, and the input shaft of the gearbox is also connected to the right turntable via a spline.

[0017] The beneficial effects of this utility model are:

[0018] This invention provides effective support and cushioning for the right friction ring by incorporating a support and guide assembly. This ensures the coaxiality of the right and left friction rings and prevents rigid contact between them, effectively guaranteeing the stability and uniformity of torque transmission. Furthermore, the preload adjustment assembly allows for convenient adjustment of the preload between the left and right friction rings. Rotating the housing drives the gear disc, which in turn causes multiple gears to synchronously drive the lead screw, thereby moving the fixed ring and mounting ring. This effectively controls the contact pressure, adapting to varying load conditions in different heavy equipment. To meet the torque transmission requirements during operation, the baffle in the auxiliary heat dissipation component can force airflow when the right turntable rotates. Combined with the through holes set in the curve, it can prolong the residence time of the airflow near the friction ring and guide the airflow to flush the edge gaps of the friction ring. With the friction ring itself being made of high-temperature resistant material, it significantly improves the heat dissipation efficiency and high-temperature resistance of the device, effectively preventing component performance degradation caused by local overheating. At the same time, the spline connection ensures the stability of torque transmission between the drive motor output shaft and the left turntable, and between the gearbox input shaft and the right turntable, while facilitating component disassembly and maintenance, reducing equipment maintenance costs.

[0019] The design of the anti-slip ring and bolt head on the rotating housing improves the convenience and safety of the preload adjustment operation. The anti-slip ring prevents hand slippage, while the bolt head makes it easy to apply force with tools, which is especially suitable for complex working conditions at heavy equipment installation sites. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a high-temperature resistant friction torque limiter for heavy equipment proposed in this utility model.

[0022] Figure 2 for Figure 1 A schematic diagram of a partial three-dimensional structure;

[0023] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure;

[0024] Figure 4 for Figure 3 Front view structural diagram;

[0025] Figure 5 for Figure 2 A schematic diagram of a partial three-dimensional structure;

[0026] Figure 6 This is a schematic diagram of the rotating housing, limiting hole, anti-slip ring, bolt head, and mesh plate components proposed in this utility model.

[0027] Figure 7 This is a schematic diagram of the structure of the right turntable, spoiler, and through hole portion proposed in this utility model.

[0028] In the diagram: 1. Base; 2. Drive motor; 21. Left turntable; 3. Gearbox; 31. Right turntable; 32. Through hole; 33. Spoiler; 4. Left friction ring; 5. Mounting ring; 501. Right friction ring; 51. Support rod; 511. Limiting ring; 52. Fixing ring; 53. Spring; 6. Rotating housing; 601. Mesh plate; 602. Bolt head; 603. Anti-slip ring; 604. Limiting hole; 605. Limiting bolt; 61. Lead screw; 62. Gear; 63. Gear disc. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Reference Figure 1-7 A high-temperature resistant heavy-duty equipment friction torque limiter includes a drive motor 2, a gearbox 3, a left turntable 21, a right turntable 31, a left friction ring 4, and a right friction ring 501;

[0031] The drive motor 2 and the gearbox 3 are fixedly mounted on the same base 1. The left turntable 21 and the right turntable 31 are respectively mounted on the output shaft of the drive motor 2 and the input shaft of the gearbox 3 and are located on the same axis. The output shaft of the drive motor 2 is connected to the left turntable 21 by a spline, and the input shaft of the gearbox 3 is also connected to the right turntable 31 by a spline. The spline connection can ensure the stability and reliability of torque transmission and avoid relative slippage between the shaft and the disc during high load operation. At the same time, it is convenient to disassemble and maintain the left turntable 21 and the right turntable 31. When the left turntable 21 or the right turntable 31 is worn or damaged, it can be replaced individually, reducing the maintenance cost of the equipment.

[0032] The left friction ring 4 is detachably mounted on the left turntable 21 by multiple bolts. Multiple support rods 51 are slidably mounted on the right turntable 31 in a circular array centered on the axis of the right turntable 31. The ends of the multiple support rods 51 closest to the left turntable 21 are fixedly mounted with the same mounting ring 5. The right friction ring 501 is detachably mounted on the side of the mounting ring 5 closest to the left turntable 21 by multiple bolts. The ends of the multiple support rods 51 furthest from the left turntable 21 are fixedly mounted with the same limiting ring 511. The multiple support rods 51 are slidably mounted with the same... The fixed ring 52 has multiple springs 53 that are movably sleeved on the outside of the corresponding support rod 51. The ends of the multiple springs 53 away from the fixed ring 52 are all fixedly installed on the right turntable 31. When the right friction ring 501 contacts the left friction ring 4 to transmit torque, it can provide effective support for the right friction ring 501. This not only ensures the coaxiality of the right friction ring 501 and the left friction ring 4, but also avoids rigid contact between the left friction ring 4 and the right friction ring 501, effectively ensuring the stability and uniformity of torque transmission.

[0033] A rotating housing 6 is rotatably mounted on the side of the right turntable 31 away from the left turntable 21. Multiple lead screws 61 arranged in a circular array around the axis of the right turntable 31 are rotatably mounted on the side of the right turntable 31 away from the left turntable 21. Each lead screw 61 passes through a limiting ring 511 and is fixedly fitted with a gear 62. A gear disc 63 that meshes with the multiple gears 62 is fixedly mounted on the inner wall of the rotating housing 6. Multiple threaded sleeves that are threadedly connected to the corresponding lead screws 61 are fixedly mounted on the fixing ring 52. The multiple lead screws 61 can be driven to rotate synchronously by rotating the rotating housing 6, thereby adjusting the distance between the fixing ring 52 and the right turntable 31. This allows for adjustment of the preload between the left friction ring 4 and the right friction ring 501 to meet the torque transmission requirements of different heavy equipment under varying loads.

[0034] Meanwhile, in order to limit the rotation housing 6 after it is adjusted to the required preload position, and to prevent relative rotation between the rotation housing 6 and the right turntable 31, and to ensure that the adjustment parameters after preload adjustment remain stable during equipment operation, and to prevent unexpected changes in preload due to vibration and other factors, thereby further improving the reliability and safety of the device, multiple limit holes 604 are provided on the outer periphery of the rotation housing 6 at equal intervals. Limit bolts 605 are threaded on the right turntable 31 and are inserted into the corresponding limit holes 604.

[0035] Multiple through holes 32 are provided on the right turntable 31. Multiple inclined baffles 33 are fixedly installed on the side of the right turntable 31 near the left turntable 21. The multiple baffles 33 and multiple through holes 32 are arranged in a circumferential array with the axis of the right turntable 31 as the center. The distance between the baffles 33 and the axis of the right turntable 31 is greater than the distance between the through holes 32 and the axis of the right turntable 31. When the right turntable 31 rotates, the baffles 33 can force the surrounding air to flow, so that the airflow quickly passes through the through holes 32 and flows through the contact area between the left friction ring 4 and the right friction ring 501, which accelerates the dissipation of heat generated by friction. At the same time, the inclined baffles 33 can enhance the airflow disturbance effect. Combined with the high temperature resistant material of the left friction ring 4 and the right friction ring 501, the high temperature resistance is further improved, avoiding the decrease of friction coefficient or the degradation of component performance due to high temperature, and ensuring the stable operation of the device under long-term high load conditions.

[0036] In order to ensure that the airflow entering between the left turntable 21 and the right turntable 31 when turbulent by the spoiler 33 moves in the direction of the axis of the left friction ring 4 and the right friction ring 501, and then exits from the gap between the mounting ring 5 and the right turntable 31, the axis of the through hole 32 is set in a curve and intersects the axis of the left turntable 21. Compared with the traditional straight through hole 32, it can prolong the residence time of the airflow near the right friction ring 501 and the left friction ring 4, and at the same time guide some airflow to flush the edge gap of the left friction ring 4 and the right friction ring 501, reduce the accumulation of heat in the gap, and effectively reduce the risk of thermal deformation of the friction ring due to local overheating.

[0037] In this embodiment, in order to prevent large particles of debris from being sucked into the rotating housing 6, while allowing airflow to pass through, and to prevent the entry of debris from causing the lead screw 61, sleeve, gear 62 and gear plate 63 to jam or wear, a ring-shaped mesh plate 601 is slidably installed on the side of the rotating housing 6 away from the right turntable 31. The gap between the mesh plate 601 and the input shaft of the gearbox 3 is 0.1-0.5mm.

[0038] In this embodiment, to facilitate the operator's gripping and rotation of the rotating housing 6 for pre-tightening force adjustment, and to effectively increase the friction between the hand and the rotating housing 6, preventing slippage during adjustment, the convenience and safety of operation are improved. This is especially suitable for heavy equipment installation sites where there may be oil stains or sweaty hands, and it is also convenient to use tools such as wrenches to assist in rotating the rotating housing 6. Especially when the pre-tightening force adjustment requires a large torque, an anti-slip ring 603 is fixedly installed on the outer periphery of the rotating housing 6, and the surface of the anti-slip ring 603 is provided with evenly distributed anti-slip texture. Multiple bolt heads 602 are fixedly installed on the side of the rotating housing 6 away from the right turntable 31, and force can be applied with the help of the bolt heads 602, improving the labor-saving and efficiency of the adjustment operation and avoiding the difficulties or slippage that may occur when rotating by hand.

[0039] In practical applications, the selection of friction rings is first based on the actual operating temperature. For high-temperature scenarios ≥400℃, ceramic matrix composites are directly selected. For scenarios of 300-400℃, metal matrix composites can be selected. For scenarios of ≤300℃, special resin-based materials can be considered. Secondly, the load and impact conditions are considered. For heavy impact loads, metal matrix composites are preferred, while for stable load scenarios, ceramic matrix composites are preferred.

[0040] It is worth noting that when selecting friction rings, one should actively avoid situations where similar hard materials come into direct contact (which can easily lead to seizing and rapid wear).

[0041] Working principle: In use, first unscrew the limiting bolt 605 from the limiting hole 604. Then, the operator can rotate the rotating housing 6 by holding the anti-slip ring 603 or by using a wrench to apply force to the bolt head 602. This causes the gear plate 63 to drive multiple gears 62 to rotate synchronously, which in turn drives multiple lead screws 61 to rotate synchronously. Under the action of the lead screws 61, the screw sleeve drives the fixing ring 52 to move along the support rod 51, thereby compressing or stretching the spring 53. This adjusts the preload between the left friction ring 4 and the right friction ring 501. After the preload is adjusted to a suitable value, screw the limiting bolt 605 into the corresponding limiting hole 604 on the outer circumference of the rotating housing 6 to achieve relative fixation between the rotating housing 6 and the right turntable 31, preventing changes in the preload due to vibration during equipment operation.

[0042] Then, the power is turned on and the drive motor 2 is started. Its output shaft drives the left turntable 21 and the left friction ring 4 to rotate through the spline. The left friction ring 4 contacts the right friction ring 501 to generate friction, which transmits torque to the right turntable 31. The right turntable 31 then transmits the torque to the input shaft of the gearbox 3 through the spline. During the operation of the equipment, when the right turntable 31 rotates, the inclined baffle 33 forces the surrounding air to flow. The airflow passes through the mesh plate 601 and then through the curved through hole 32 through the right turntable 31, and then blows towards the position of the left turntable 21. This can prolong the residence time near the left friction ring 4 and the right friction ring 501 and flush the edge gaps, which can achieve an auxiliary heat dissipation effect, thereby effectively improving the high temperature resistance. At the same time, the mesh plate 601 can prevent large particles of debris from entering the interior of the rotating housing 6, ensuring the normal operation of transmission components such as the lead screw 61, gear 62 and gear plate 63.

[0043] The above provides a detailed description of a high-temperature resistant friction torque limiter for heavy equipment. Specific embodiments have been used to illustrate the principle and implementation of this invention. These embodiments are merely illustrative and are intended to aid in understanding the method and core concept of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this invention.

Claims

1. A high-temperature resistant friction torque limiter for heavy-duty equipment, characterized in that, It includes a drive motor (2), a gearbox (3), a left turntable (21), a right turntable (31), a left friction ring (4), a right friction ring (501), a support guide assembly, a preload adjustment assembly, and an auxiliary heat dissipation assembly; The drive motor (2) and the gearbox (3) are fixedly mounted on the same base (1). The left turntable (21) and the right turntable (31) are respectively mounted on the output shaft of the drive motor (2) and the input shaft of the gearbox (3) and are located on the same axis. The left friction ring (4) is detachably mounted on the left turntable (21) by multiple bolts. The support guide assembly is set on the right turntable (31), and the right friction ring (501) is detachably mounted on the support guide assembly by multiple bolts and abuts against the left friction ring (4). The right turntable (31) is rotatably mounted on the side away from the left turntable (21) with a rotating housing (6). The preload adjustment assembly is set in the rotating housing (6) and connected to the right turntable (31) and the support guide assembly. The auxiliary heat dissipation assembly is set on the side of the right turntable (31) close to the left turntable (21).

2. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: The support and guide assembly includes a mounting ring (5), a fixing ring (52), multiple support rods (51), a limiting ring (511), and multiple springs (53). Multiple support rods (51) are slidably mounted on the right turntable (31) in a circular array centered on the axis of the right turntable (31). The same mounting ring (5) is fixedly mounted on the end of the multiple support rods (51) near the left turntable (21). The right friction ring (501) is detachably mounted on the side of the mounting ring (5) near the left turntable (21) by multiple bolts. The same limiting ring (511) is fixedly mounted on the end of the multiple support rods (51) away from the left turntable (21). The same fixing ring (52) is slidably mounted on the multiple support rods (51). Multiple springs (53) are fixedly mounted on the fixing ring (52) and are respectively movably sleeved on the outside of the corresponding support rods (51). The ends of the multiple springs (53) away from the fixing ring (52) are all fixedly mounted on the right turntable (31).

3. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 2, characterized in that: The preload adjustment assembly includes multiple lead screws (61), multiple gears (62), a gear disc (63), and multiple threaded sleeves. Multiple lead screws (61) arranged in a circular array with the axis of the right turntable (31) as the center are rotatably installed on the side of the right turntable (31) away from the left turntable (21). Multiple lead screws (61) pass through the limiting ring (511) and are respectively fixedly sleeved with gears (62). A gear disc (63) that meshes with multiple gears (62) is fixedly installed on the inner wall of the rotating housing (6). Multiple threaded sleeves that are threadedly connected to the corresponding lead screws (61) are fixedly installed on the fixing ring (52).

4. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: The outer periphery of the rotating housing (6) is provided with a plurality of equidistant limiting holes (604), and a limiting bolt (605) is threaded on the right turntable (31), and the limiting bolt (605) is inserted into the corresponding limiting hole (604).

5. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: The auxiliary heat dissipation component includes multiple through holes (32) and multiple baffles (33). Multiple through holes (32) are provided on the right turntable (31). Multiple baffles (33) are fixedly installed on the side of the right turntable (31) near the left turntable (21). The multiple baffles (33) and multiple through holes (32) are arranged in a circular array with the axis of the right turntable (31) as the center. The distance between the baffles (33) and the axis of the right turntable (31) is greater than the distance between the through holes (32) and the axis of the right turntable (31).

6. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 5, characterized in that: The axis of the through hole (32) is curved and intersects the axis of the left turntable (21).

7. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: A ring-shaped mesh plate (601) is slidably installed on the side of the rotating housing (6) away from the right turntable (31), and the gap between the mesh plate (601) and the input shaft of the gearbox (3) is 0.1-0.5mm.

8. The high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: An anti-slip ring (603) is fixedly installed on the outer periphery of the rotating housing (6), and the surface of the anti-slip ring (603) is provided with uniformly distributed anti-slip texture.

9. A high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: Multiple bolt heads (602) are fixedly installed on the side of the rotating housing (6) away from the right turntable (31).

10. A high-temperature resistant heavy-duty equipment friction torque limiter according to claim 1, characterized in that: The output shaft of the drive motor (2) is connected to the left turntable (21) via a spline, and the input shaft of the gearbox (3) is also connected to the right turntable (31) via a spline.

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