CN210290669U - Gear box capable of realizing overload protection - Google Patents
Gear box capable of realizing overload protection Download PDFInfo
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- CN210290669U CN210290669U CN201920748820.7U CN201920748820U CN210290669U CN 210290669 U CN210290669 U CN 210290669U CN 201920748820 U CN201920748820 U CN 201920748820U CN 210290669 U CN210290669 U CN 210290669U
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- gear box
- gear
- friction plate
- output shaft
- gradient surface
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Abstract
The utility model discloses a realize overload protection's gear box relates to gear box technical field. The utility model discloses a gear box, the gear box internal rotation is connected with the output shaft, is equipped with first gradient face, second gradient face and third gradient face on the output shaft, is equipped with the spacing groove on the first gradient face, and is equipped with the annular arch on it and cup joints dish bullet circle, first friction disc, gear and the second friction disc that splines on it, and the annular arch is tightly supported to the one end of dish bullet circle. The utility model discloses a set up dish bullet circle, gear, first spline friction disc, second spline friction disc and adjusting nut, the deflection of dish bullet circle when adjusting nut comes the separation and reunion moment of torsion of load and gear, and when the load of output shaft exceeded the setting value, the frictional force that first spline friction disc and second spline friction disc were overcome to the gear continued to rotate to reach overload protection's effect, solved the easy problem of damaging of the too big gear box of present load.
Description
Technical Field
The utility model belongs to the technical field of the gear box, especially, relate to a realize overload protection's gear box.
Background
The reduction gearbox is a device for reducing the rotating speed and amplifying the torque, each reduction gearbox has the maximum load allowed by the design, and under the condition of actual working conditions, when the load exceeds the maximum design torque, the reduction gearbox does not reduce the service life or even damage the gearbox and the motor due to the increase of the load.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a realize overload protection's gear box, through setting up dish bullet circle, the gear, first rotation stopping friction disc, second rotation stopping friction disc and adjusting nut, the deflection of dish bullet circle when adjusting nut, obtain the separation and reunion moment of torsion of load and gear, when the load of output shaft exceeds the setting value, the frictional force that first rotation stopping friction disc and second rotation stopping friction disc were overcome to the gear continues to rotate, the gear is still normally rotating like this, and the output shaft that is connected with the load with it continuous has stopped the operation, with the effect that reaches overload protection, the problem of the easy damage of the too big gear box of present load has been solved.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a realize overload protection's gear box, including the gear box, the one end fixed mounting of gear box has the motor, and the output of motor passes the outer wall of gear box and is in the gear box, and the gear box internal rotation is connected with the output shaft, and the one end that the output shaft is close to the motor rotates and connects in the wall of gear box, and the other end passes the wall of gear box and is in the outside for connect the load, and the output shaft has first gradient face, second gradient face and the third gradient face that the external diameter reduces gradually along the load to the length direction of the one end that is close to the motor in proper order;
the first gradient surface is provided with a limiting groove, the first gradient surface in the gear box is sequentially provided with an annular bulge fixedly arranged on the first gradient surface along the length direction of the first gradient surface, and a disc-shaped elastic ring, a first rotation stopping friction plate, a gear and a second rotation stopping friction plate which are sleeved on the annular bulge, one end of the disc-shaped elastic ring is tightly abutted against the annular bulge, the inner rings of the first rotation stopping friction plate and the second rotation stopping friction plate are provided with limiting bulges matched with the limiting groove, the gear is in clearance fit with the first gradient surface, and the gear is in transmission connection with the output end of the motor through a connecting gear;
an external thread is arranged on the second gradient surface, an adjusting nut is connected to the external thread in a threaded manner, and one end of the adjusting nut tightly abuts against the second rotation stopping friction plate;
the third gradient surface is rotationally connected to the gear box.
Further, a bearing is embedded into the wall of the gear box, the output shaft is rotatably connected to the gear box through the bearing, a clamping groove is formed in the third gradient surface of the output shaft, a clamping block is arranged on an inner ring of the bearing matched with the clamping groove, and the output shaft is connected to the bearing through the clamping groove and the clamping block in a clamping mode.
Further, the outer diameter of the disc-shaped elastic ring is smaller than the first rotation stopping friction plate and the second rotation stopping friction plate, and the outer diameters of the first rotation stopping friction plate and the second rotation stopping friction plate are smaller than the gear.
Furthermore, one end of the second rotation stopping friction plate extends out of the first gradient surface, is positioned right above the second gradient surface and is tightly attached to the adjusting nut.
The utility model discloses following beneficial effect has:
1. the utility model discloses a set up dish bullet circle, the gear, first spline friction disc, second spline friction disc and adjusting nut, the deflection of dish bullet circle when adjusting nut, obtain the separation and reunion moment of torsion of load and gear, when the load of output shaft exceeded the setting value, the gear overcomes the frictional force that first spline friction disc and second spline the friction disc and continues to rotate, the gear is still normally rotating like this, and the output shaft that is connected with the load with it continuous has the stall, in order to reach overload protection's effect, the problem of the easy damage of the too big gear box of present load has been solved.
2. The utility model discloses a set up the spacing groove to the spacing arch of cooperation is fixed first spline friction disc and second spline friction disc block on the output shaft, carries on spacingly, avoids its and output shaft to produce relative slip, also is favorable to changing the equipment of being convenient for simultaneously.
3. The utility model discloses a set up the draw-in groove, the draw-in groove is connected on the bearing with the fixture block, not only plays spacing fixed effect, is favorable to the installation and the dismantlement of gear box simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a gear box for implementing overload protection according to the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural diagram of an output shaft in the present invention;
FIG. 4 is a schematic view of a part of the structure of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the gear box comprises a gear box 1, a motor 2, an output shaft 3, an annular protrusion 31, a first gradient surface 32, a limiting groove 321, a second gradient surface 33, an external thread 331, a third gradient surface 34, a clamping groove 341, a bearing 4, a disc-shaped elastic ring 5, a first rotation stopping friction plate 6, a gear 7, a second rotation stopping friction plate 8 and an adjusting nut 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "middle", "wall", "inner", "outer", "end", "side", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1 and 3 together, a gearbox for realizing overload protection includes a gearbox 1, a motor 2 is fixedly installed at one end of the gearbox 1, an output end of the motor 2 penetrates through an outer wall of the gearbox 1 and is located in the gearbox 1, an output shaft 3 is rotatably connected to the gearbox 1, the output end of the motor 2 is in transmission connection with the output shaft 3 through a gear set, one end of the output shaft 3 close to the motor 2 is rotatably connected in a wall of the gearbox 1, the other end of the output shaft passes through the wall of the gearbox 1 and is located at an outer side for connecting a load, and a first gradient surface 32, a second gradient surface 33 and a third gradient surface 34, of which the outer diameters are gradually reduced, are sequentially arranged on the output shaft 3 along a length direction from the.
Referring to fig. 2 and 4 together, a limiting groove 321 is arranged on the first gradient surface 32, and the first gradient surface 32 in the gear box 1 is sequentially provided with an annular protrusion 31 fixedly mounted thereon, a disc-shaped elastic ring 5 sleeved thereon, a first rotation-stopping friction plate 6, a gear 7 and a second rotation-stopping friction plate 8 along the length direction thereof, one end of the disc-shaped elastic ring 5 tightly abuts against the annular protrusion 31, the disc-shaped elastic ring 5 is limited by the annular protrusion 31, the inner rings of the first rotation-stopping friction plate 6 and the second rotation-stopping friction plate 8 are provided with limiting protrusions matched with the limiting groove 321, the gear 7 is in clearance fit with the first gradient surface 32, and the gear 7 is in transmission connection with the output end of the motor 2 through a connecting gear;
the second gradient surface 33 is provided with an external thread 331, the external thread 331 is in threaded connection with an adjusting nut 9, one end of the adjusting nut 9 is tightly abutted against the second rotation-stopping friction plate 8, when in installation, the disc-shaped elastic ring 5 is sleeved on the output shaft 3 and tightly abutted against the annular bulge 31, then the first rotation-stopping friction plate 6 is arranged, the limit bulge on the first rotation-stopping friction plate 6 is inserted into the limit groove 321, then the first rotation-stopping friction plate 6 is fixed, then the gear 7 is sleeved on the first gradient surface 32, then the limit bulge on the second rotation-stopping friction plate 8 is inserted into the limit groove 321, further the second rotation-stopping friction plate 8 is fixed, then the adjusting nut 9 is in threaded connection with the second gradient surface 33, the second rotation-stopping friction plate 8 is extruded by adjusting the adjusting nut 9, and the gear 7 and the first rotation-stopping friction plate 6 are driven to approach to the disc-shaped elastic ring 5 to be tightly attached, meanwhile, the disc-shaped elastic ring 5 and the first rotation stopping friction plate 6 are extruded to deform, and the friction force among the first rotation stopping friction plate 6, the second rotation stopping friction plate 8 and the gear 7 is changed by changing the deformation of the disc-shaped elastic ring 5, so that the clutch torque of the load and the gear 7 is obtained;
when the overload protection device works, when the load of the output shaft is within a set value, the motor 2 drives the gear 7 to rotate, the gear 7 drives the first rotation stop friction plate 6 and the second rotation stop friction plate 8 which are tightly attached to the gear 7 to rotate, when the load of the output shaft 3 exceeds the set value, the gear 7 overcomes the friction force of the first rotation stop friction plate 6 and the second rotation stop friction plate 8 to continue to rotate, so that the gear 7 still normally rotates, and the output shaft 3 connected with the gear and connected with the gear stops rotating, so that the overload protection effect is achieved.
The third gradient surface 34 is rotationally connected to the gearbox 1.
Preferably, bearing 4 is installed to the embedded bearing 4 that installs in the wall of gear box 1, output shaft 3 passes through bearing 4 and rotates the connection on gear box 1, be equipped with draw-in groove 341 on the third gradient face 34 on the output shaft 3, be equipped with the fixture block on the inner ring of complex bearing 4 with it, output shaft 3 passes through the block connection of draw-in groove 341 and fixture block on bearing 4, not only play spacing fixed effect, be favorable to gear box 1's installation and dismantlement simultaneously, the later stage of being convenient for is dismantled and is changed first friction disc 6 and the second friction disc 8 that splines.
Preferably, the outer diameter of the disc-shaped elastic ring 5 is smaller than the outer diameters of the first rotation stop friction plate 6 and the second rotation stop friction plate 8, and the outer diameters of the first rotation stop friction plate 6 and the second rotation stop friction plate 8 are smaller than the outer diameter of the gear 7.
Preferably, one end of the second rotation stop friction plate 8 extends out of the first gradient surface 32, is positioned right above the second gradient surface 33 and is tightly attached to the adjusting nut 9, and the second rotation stop friction plate 8 is pressed by adjusting the adjusting nut 9 on the second gradient surface 33.
The utility model discloses a theory of operation: the second rotation stopping friction plate 8 is extruded by adjusting the adjusting nut 9, so that the gear 7 and the first rotation stopping friction plate 6 are driven to approach the disc-shaped elastic ring 5 to be tightly attached, meanwhile, the disc-shaped elastic ring 5 and the first rotation stopping friction plate 6 are extruded to deform, the friction force among the first rotation stopping friction plate 6, the second rotation stopping friction plate 8 and the gear 7 is changed by changing the deformation of the disc-shaped elastic ring 5, the clutch torque of the load and the gear 7 is obtained, and then the clutch torque is installed in the gear box 1; when the load of the output shaft 3 is within the set value, the motor 2 drives the gear 7 to rotate, the gear 7 drives the first rotation stopping friction plate 6 and the second rotation stopping friction plate 8 which are tightly attached to the gear 7 to rotate, when the load of the output shaft 3 exceeds the set value, the gear 7 overcomes the friction force of the first rotation stopping friction plate 6 and the second rotation stopping friction plate 8 to continue to rotate, so that the gear rotates normally, and the output shaft 3 connected with the gear and connected with the gear stops rotating, so that the overload protection effect is achieved.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. A gear box for realizing overload protection comprises a gear box (1), wherein a motor (2) is fixedly mounted at one end of the gear box (1), the output end of the motor (2) penetrates through the outer wall of the gear box (1) to be positioned in the gear box (1), an output shaft (3) is rotatably connected in the gear box (1), one end, close to the motor (2), of the output shaft (3) is rotatably connected in the wall of the gear box (1), the other end of the output shaft penetrates through the wall of the gear box (1) to be positioned at the outer side for connecting a load, and the gear box is characterized in that a first gradient surface (32), a second gradient surface (33) and a third gradient surface (34) with gradually reduced outer diameters are sequentially arranged on the output shaft (3) along the length direction from the load to one end close to;
the gear box is characterized in that a limiting groove (321) is formed in the first gradient surface (32), a first gradient surface (32) in the gear box (1) is sequentially provided with an annular protrusion (31) fixedly mounted on the first gradient surface, a disc-shaped elastic ring (5), a first rotation stopping friction plate (6), a gear (7) and a second rotation stopping friction plate (8) in a sleeved mode along the length direction of the first gradient surface, one end of the disc-shaped elastic ring (5) tightly abuts against the annular protrusion (31), limiting protrusions matched with the limiting groove (321) are arranged on inner rings of the first rotation stopping friction plate (6) and the second rotation stopping friction plate (8), the gear (7) is in clearance fit with the first gradient surface (32), and the gear (7) is in transmission connection with the output end of the motor (2) through a connecting gear;
an external thread (331) is arranged on the second gradient surface (33), an adjusting nut (9) is connected to the external thread (331) in a threaded manner, and one end of the adjusting nut (9) is tightly abutted to the second rotation stopping friction plate (8);
the third gradient surface (34) is rotationally connected to the gear box (1).
2. A gearbox for implementing overload protection according to claim 1 wherein: the bearing (4) is installed to the embedded bearing (4) that installs in the wall of gear box (1), and output shaft (3) rotate through bearing (4) and connect on gear box (1), are equipped with draw-in groove (341) on third gradient face (34) on output shaft (3), are equipped with the fixture block on the inner ring of bearing (4) with it complex, and output shaft (3) are connected on bearing (4) through the block of draw-in groove (341) and fixture block.
3. A gearbox for implementing overload protection according to claim 1 wherein: the outer diameter of the disc-shaped elastic ring (5) is smaller than the first rotation stopping friction plate (6) and the second rotation stopping friction plate (8), and the outer diameters of the first rotation stopping friction plate (6) and the second rotation stopping friction plate (8) are smaller than the gear (7).
4. A gearbox for implementing overload protection according to claim 1 wherein: one end of the second rotation stopping friction plate (8) extends out of the first gradient surface (32), is positioned right above the second gradient surface (33) and is tightly attached to the adjusting nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920748820.7U CN210290669U (en) | 2019-05-23 | 2019-05-23 | Gear box capable of realizing overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920748820.7U CN210290669U (en) | 2019-05-23 | 2019-05-23 | Gear box capable of realizing overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290669U true CN210290669U (en) | 2020-04-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920748820.7U Active CN210290669U (en) | 2019-05-23 | 2019-05-23 | Gear box capable of realizing overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290669U (en) |
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2019
- 2019-05-23 CN CN201920748820.7U patent/CN210290669U/en active Active
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