阅读说明：本技术 球座式超载保护离合器 (Ball seat type overload protection clutch ) 是由 朱威威 刘薇薇 虞军 耿峰 于 2021-09-23 设计创作，主要内容包括：本发明涉及球座式超载保护离合器,包括底盘,所述底盘与所述护圈焊接合成,所述底盘中心设置有台阶孔,所述台阶孔内设置有衬套,所述衬套内设置有轴,所述轴上设置有轮盘,所述轮盘上设置有中间压板,所述中间压板设置有限位部,所述中间压板远离所述轮盘的一面设置有压盖,所述压盖设置有环形凸起,所述底盘、中间压板、压盖贯穿设置有螺栓,所述螺栓从底盘穿入经中间压板,压盖穿出,所述压盖穿出的螺栓上设置有弹簧,所述弹簧末端设置螺母固定。本发明所述的球座式超载保护离合器,结构简单,设置轮盘、中间压板及钢球结构,实现农业机械遇到障碍物等突发状况时的过载保护,运行平稳、可靠性高,减少维护成本及时间。(The invention relates to a ball seat type overload protection clutch which comprises a chassis, wherein the chassis and a guard ring are welded together, a step hole is formed in the center of the chassis, a bushing is arranged in the step hole, a shaft is arranged in the bushing, a wheel disc is arranged on the shaft, an intermediate pressing plate is arranged on the wheel disc and provided with a limiting part, a pressing cover is arranged on one surface, away from the wheel disc, of the intermediate pressing plate, an annular bulge is arranged on the pressing cover, bolts penetrate through the chassis, the intermediate pressing plate and the pressing cover and penetrate out of the pressing cover, springs are arranged on the bolts penetrating out of the pressing cover, and nuts are arranged at the tail ends of the springs for fixation. The ball seat type overload protection clutch is simple in structure, is provided with the wheel disc, the middle pressing plate and the steel ball structure, achieves overload protection when agricultural machinery meets emergency conditions such as obstacles, is stable in operation and high in reliability, and reduces maintenance cost and time.)

1. Ball seat formula overload protection clutch, its characterized in that: including chassis (1), be provided with step (101) on chassis (1), protective shroud (2) have been cup jointed on step (101), chassis (1) with protective shroud (2) welding synthesis, chassis (1) center is provided with step hole (102), be provided with bush (3) in step hole (102), be provided with axle (4) in bush (3), be provided with rim plate (401) on axle (4), be provided with first through-hole (4011) on rim plate (401), first through-hole (4011) circumferencial direction sets up a plurality ofly, be provided with steel ball (5) in first through-hole (4011), the footpath of steel ball (5) with first through-hole (4011) diameter equals, steel ball (5) both ends are outstanding rim plate (401) set up, first through-hole (4011) correspond be provided with first spherical groove (103) on chassis (1),

the wheel disc (401) is provided with an intermediate pressure plate (6), the intermediate pressure plate (6) is provided with a second through hole (601), the second through hole (601) is arranged corresponding to the first through hole (4011), the surface of the intermediate pressure plate (6) contacting the wheel disc (401) is provided with a second spherical groove (602), the second spherical groove (602) is arranged corresponding to the first spherical groove (102),

the middle pressing plate (6) is provided with a plurality of limiting parts (603), the limiting parts (603) are arranged in the circumferential direction, a limiting groove (201) is arranged in the guard ring (2), the limiting groove (201) is arranged corresponding to the limiting parts (603), the limiting parts (603) are clamped in the limiting groove (201),

a gland (7) is arranged on one side, far away from the wheel disc (401), of the middle pressing plate (6), an annular protrusion (701) is arranged on the gland (7), the annular protrusion (701) is arranged corresponding to the second through hole (601), a flanging (702) is arranged on the gland (7), the flanging (702) is in clearance fit with the guard ring (2), a center hole (703) is arranged on the gland (7), and the center hole (703) is arranged according to the shaft (4),

the novel pressure plate is characterized in that bolts (8) penetrate through the chassis (1), the middle pressure plate (6) and the gland (7), the bolts (8) penetrate through the middle pressure plate (6) from the chassis (1), the gland (7) penetrates out, springs (9) are arranged on the bolts (8) penetrating out of the gland (7), and nuts (10) are arranged at the tail ends of the springs (9) for fixing.

2. The ball seat type overload protection clutch according to claim 1, wherein: the bush (3) is set to be a copper bush made of ZCuSn10Pb1, and the bush (3) is provided with a cutting groove (301).

3. The ball seat type overload protection clutch according to claim 1, wherein: the nut (10) is a self-locking nut.

4. The ball seat type overload protection clutch according to claim 1, wherein: the middle pressing plate (6) is made of 42 CrMo.

5. The ball seat type overload protection clutch according to claim 1, wherein: one end of the shaft (4) far away from the gland (7) is provided with a spline (402), and the spline (402) is connected with the transmission shaft.

6. The ball seat type overload protection clutch according to claim 1, wherein: the bolt (8) is provided with a step surface (801).

Technical Field

The invention belongs to the technical field of agricultural mechanical clutches, and particularly relates to a ball seat type overload protection clutch.

Background

The clutch is a common component in mechanical transmission, can separate or connect a transmission system at any time, and is matched with an agricultural machine and a tractor to complete the operation.

The friction plate clutch on the existing transmission shaft assembly adopts a ball seat structure of a conventional resin sheet, the resin friction plate clutch is unstable in operation, certain pollutants are generated in the operation process, and a protective cover arranged outside the clutch cannot completely cover the clutch, so that the clutch friction plates are easily wrapped by dust and impurities during operation, and the normal operation of the transmission shaft is influenced seriously.

The clutch is in a joint state for a long time, so that the abrasion is huge and the service life is short. Therefore, the friction clutch is widely used because of its intermittent clutch characteristic, which not only meets the motion transmission requirement, but also avoids the adverse effect of long-time engagement. However, the friction clutch is used for a long time, or under some special environments, the intermittent clutch cannot meet the motion transmission requirement, and the working risk is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the ball seat type overload protection clutch.

The invention adopts the following technical scheme:

the ball seat type overload protection clutch comprises a chassis, wherein steps are arranged on the chassis, protective rings are sleeved on the steps, the chassis and the protective rings are welded to be combined, a step hole is formed in the center of the chassis, a bushing is arranged in the step hole, a shaft is arranged in the bushing, a wheel disc is arranged on the shaft, a plurality of first through holes are arranged on the wheel disc in the circumferential direction, steel balls are arranged in the first through holes, the diameter of each steel ball is equal to the diameter of each first through hole, two ends of each steel ball protrude out of the wheel disc, each first through hole corresponds to one first spherical groove formed in the chassis,

the wheel disc is provided with an intermediate pressure plate, the intermediate pressure plate is provided with a second through hole, the second through hole is arranged corresponding to the first through hole, the surface of the intermediate pressure plate, which is in contact with the wheel disc, is provided with a second spherical groove, the second spherical groove is arranged corresponding to the first spherical groove,

the middle pressing plate is provided with a plurality of limiting parts arranged in the circumferential direction, the guard ring is internally provided with a limiting groove, the limiting groove is arranged corresponding to the limiting parts, the limiting parts are clamped in the limiting groove,

a gland is arranged on one side of the middle pressure plate, which is far away from the wheel disc, the gland is provided with an annular bulge, the annular bulge is arranged corresponding to the second through hole, the gland is provided with a flanging, the flanging is in clearance fit with the guard ring, the gland is provided with a central hole, the central hole is arranged according to the shaft,

the base plate, the middle pressing plate and the pressing cover are provided with bolts in a penetrating mode, the bolts penetrate through the middle pressing plate from the base plate, the pressing cover penetrates out of the pressing cover, springs are arranged on the bolts penetrating out of the pressing cover, and nuts are arranged at the tail ends of the springs for fixing.

Further, the bush is set to be a copper bush, the copper bush is made of ZCuSn10Pb1, and the bush is provided with a cutting groove.

Further, the nut is a self-locking nut.

Furthermore, the intermediate pressure plate is made of 42 CrMo.

Furthermore, one end of the shaft, which is far away from the gland, is provided with a spline, and the spline is connected with the transmission shaft.

Further, the bolt is provided with a step surface.

The invention has the beneficial effects that:

1. the ball seat type overload protection clutch is simple in structure, is provided with the wheel disc, the middle pressing plate and the steel ball structure, realizes overload protection when the agricultural machinery meets emergency conditions such as obstacles, is stable in operation and high in reliability, and reduces maintenance cost and time;

2. the invention designs the steel ball and spring structure, can select the proper spring according to the magnitude of the transmission torque, the number of the steel balls can be installed according to the requirement of the actual transmission torque, and the application range is wide;

3. the invention has obvious dustproof effect, realizes low carbon and environmental protection, and eliminates the traditional resin friction plate (which has pollutants on the environment).

Drawings

FIG. 1 is a schematic structural diagram of a ball seat type overload protection clutch according to the present invention;

FIG. 2 is a cross-sectional view of the ball seat overload protection clutch of the present invention;

fig. 3 is an exploded view of the ball seat type overload protection clutch according to the present invention.

In the figure: 1. a chassis; 101. a step; 102. a stepped bore; 103. a first spherical groove; 2. a retainer; 201. a limiting groove; 202. a second glue sealing surface; 203. a second reinforcing strip; 204. a second support portion; 205. a guide sleeve; 206. a gas blowing hole; 207. a second cooling channel; 3. a bushing; 301. cutting a groove; 4. a shaft; 401. a wheel disc; 4011. a first through hole; 402. a spline; 5. a steel ball; 6. an intermediate pressing plate; 601. a second through hole; 602. a second spherical groove; 603. a limiting part; 7. a gland; 701. an annular projection; 702. flanging; 703. a central bore; 8. a bolt; 801. a step surface; 9. a spring; 10. and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the ball seat type overload protection clutch includes a chassis 1, a step 101 is provided on the chassis 1, a guard ring 2 is sleeved on the step 101, the step 101 is provided to help the guard ring 2 to be positioned, the chassis 1 and the guard ring 2 are welded together, a step hole 102 is provided at the center of the chassis 1, a bushing 3 is provided in the step hole 102, the setting of the step hole 102 avoids the bushing 3 from slipping out, the position of the bushing 3 is limited, a shaft 4 is provided in the bushing 3, a wheel disc 401 is provided on the shaft 4, a first through hole 4011 is provided on the wheel disc 401, a plurality of first through holes 4011 are provided in the circumferential direction, a steel ball 5 is provided in the first through hole 4011, the ball diameter of the steel ball 5 is equal to the diameter of the first through hole 4011, two ends of the steel ball 5 protrude out of the wheel disc 401, the first through hole 4011 corresponds to a first spherical groove 103 provided on the chassis 1,

the wheel disc 401 is provided with an intermediate pressing plate 6, the intermediate pressing plate 6 is provided with a second through hole 601, the second through hole 601 is arranged corresponding to the first through hole 4011, the surface of the intermediate pressing plate 6 contacting the wheel disc 401 is provided with a second spherical groove 602, the second spherical groove 602 is arranged corresponding to the first spherical groove 102,

the middle pressing plate 6 is provided with a plurality of limiting parts 603, the limiting parts 603 are arranged in the circumferential direction, a limiting groove 201 is arranged in the guard ring 2, the limiting groove 201 is arranged corresponding to the limiting parts 603, the limiting parts 603 are clamped in the limiting groove 201 to prevent the middle pressing plate 6 from rotating in the circumferential direction,

a gland 7 is arranged on one side, far away from the wheel disc 401, of the middle pressing plate 6, an annular protrusion 701 is arranged on the gland 7, the position of the middle pressing plate 6 is limited by the annular protrusion 701, the annular protrusion 701 is arranged corresponding to the second through hole 601 to avoid the steel ball 5 from separating from the position, a flanging 702 is arranged on the gland 7, the flanging 702 is in clearance fit with the retainer 2 to effectively prevent dust and the like from entering, a central hole 703 is arranged on the gland 7, and the central hole 703 is arranged according to the shaft 4,

the chassis 1, the intermediate pressure plate 6 and the gland 7 are provided with bolts 8 in a penetrating way, the bolts 8 penetrate from the chassis 1 through the intermediate pressure plate 6, the gland 7 penetrates out, the bolts 8 penetrating out of the gland 7 are provided with springs 9, the tail ends of the springs 9 are provided with nuts 10 for fixation,

in practical application, the bushing 3 is a copper bush made of ZCuSn10Pb1, and has high hardness, good wear resistance, good corrosion resistance, and is not easy to seize, and the bushing 3 is provided with a cutting groove 301, and the cutting groove 301 is arranged to be more tightly matched with the stepped hole 102.

In practical application, the nut 10 is a self-locking nut, and the self-locking nut is anti-loose and anti-vibration and self-locked by friction.

In practical application, the intermediate pressing plate 6 is made of 42CrMo, and has high strength and toughness, and high fatigue limit and impact resistance.

In practical application, the end of the shaft 4 away from the gland 7 is provided with a spline 402, and the spline 402 is connected with a transmission shaft.

In practical application, the bolt 8 is provided with a step surface 801, and the step surface 801 is arranged to avoid interference caused by touching the outer circle of the wheel disc 401.

The working principle of the invention is as follows:

when the agricultural machine meets emergency conditions such as obstacles, overload is generated, if the agricultural machine is not stopped in time, damage can be caused to an engine, a transmission shaft and the like, and the overload protector can ensure that the transmitted torque does not exceed a limit value. According to the ball seat type overload protection clutch, the center of a chassis 1 is provided with a bushing 3, a shaft 4 is arranged in the bushing 3 in a sliding mode, the shaft 4 is provided with a wheel disc 401 and is covered by an intermediate pressing plate 6 and a pressing cover 7 and fixed by using a bolt 8, a spring 9 and a nut 10, the intermediate pressing plate 6 is provided with a limiting part 603 and is clamped with a limiting groove 201 on a guard ring 2 welded on the chassis 1, and the intermediate pressing plate 6 is oriented and cannot rotate radially. Rim plate 401 is provided with first through-hole 4011, middle clamp plate 6 is provided with second through-hole 601, rim plate 401 with the face that middle clamp plate 6 contacted is provided with the spherical groove of second 602, establishes steel ball 5 through corresponding first through-hole 4011 that sets up, the cover in the second through-hole 601, when transmission torque surpassed the limit value, spring 9 received the extrusion, steel ball 5 is in rim plate 401 with produce the circumferencial direction in the middle clamp plate 6 and skid, set up spacing portion 603 because of middle clamp plate 6 to drive rim plate 401 and produce and skid, cause axle 4 to produce and skid, protection machine and transmission shaft.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. The front, back, left and right are not specific, but are used for more intuitively explaining the technical scheme without limitation. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.