CN215567428U - Ball tooth coupling for screw shaft - Google Patents
Ball tooth coupling for screw shaft Download PDFInfo
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- CN215567428U CN215567428U CN202120996948.2U CN202120996948U CN215567428U CN 215567428 U CN215567428 U CN 215567428U CN 202120996948 U CN202120996948 U CN 202120996948U CN 215567428 U CN215567428 U CN 215567428U
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Abstract
The utility model provides a ball tooth coupling for a spiral shaft, and relates to the technical field of couplings. One end of the outer spherical gear shaft is provided with a mounting sphere, one end of the mounting sphere, which is far away from the outer spherical gear shaft, is provided with a positioning plane, and the other end of the outer spherical gear shaft is provided with a first flange; one end of the inner ball gear shaft is provided with a second flange, the other end of the inner ball gear shaft is provided with an inner ball gear seat, the inner ball gear seat is provided with a mounting groove, the inner wall of the mounting groove comprises a first spherical peripheral surface and an inner end surface, the first spherical peripheral surface is suitable for being connected with a spherical spline of a mounting ball, and a positioning ball is arranged in the center of the inner end surface; the spherical tooth cap is suitable for being sleeved on the installation ball body, the inner wall of the spherical tooth cap comprises a second spherical peripheral surface and a straight peripheral surface, the second spherical peripheral surface is matched with the spherical surface of the installation ball body, the inner diameter of the straight peripheral surface is larger than the diameter of the outer spherical tooth shaft, and the spherical tooth cap is suitable for being connected with the inner spherical tooth seat to fix the installation ball body in the installation groove. The performance of the screw shaft after connection is improved.
Description
Technical Field
The utility model relates to the technical field of couplings, in particular to a ball tooth coupling for a screw shaft.
Background
In the field of bulk cargo conveying, the spiral conveying equipment is popular with users due to excellent environmental protection performance. The intermediate support and connection mode of the screw shaft is one of key technologies of screw conveying equipment, and the performance of the screw conveying equipment has a decisive influence on the energy consumption, the operation stability and the precision requirement of manufacturing and installation of the screw conveyor.
The screw shaft adopted by the existing screw conveyor is long in whole and needs to be connected in a sectional production mode, the existing connection is mainly rigid connection, and the existing connection is rigidly connected with an upper screw shaft and a lower screw shaft (or a front screw shaft and a rear screw shaft) through rigid flange plates, the structure is simple and easy to implement, but the following limitations exist: the rigid connection is a statically indeterminate structure, and the structural deformation and installation error of the screw shaft can cause the abnormal increase of the support reaction force of the supporting part, so that the energy consumption of the screw conveyor is too large; machining errors and mounting errors can cause vibratory impacts on the auger shaft.
SUMMERY OF THE UTILITY MODEL
The utility model aims to improve the torque transmission performance after the connection of the sectional type screw shaft.
In order to solve the above problems, the present invention provides a ball-tooth coupling for a screw shaft, comprising:
the mounting sphere is arranged at one end of the mounting sphere, which is far away from the outer spherical gear shaft, a positioning plane is arranged at one end of the mounting sphere, and a first flange is arranged at the other end of the outer spherical gear shaft;
the inner ball gear shaft is coaxially provided with a second flange at one end, an inner ball gear seat is arranged at the other end of the inner ball gear shaft, the inner ball gear seat is provided with an installation groove, the inner wall of the installation groove comprises a first spherical peripheral surface and an inner end surface which are connected, the first spherical peripheral surface is matched with the spherical surface of the installation ball body, the first spherical peripheral surface is suitable for being connected with a spherical surface spline of the installation ball body, a positioning ball is arranged at the center of the inner end surface and is suitable for being abutted to the positioning plane; and
the spherical tooth cap is suitable for being sleeved on the installation ball body, the inner wall of the spherical tooth cap comprises a second spherical peripheral surface and a straight peripheral surface which are connected, the second spherical peripheral surface is matched with the spherical surface of the installation ball body, the inner diameter of the straight peripheral surface is larger than the diameter of the outer spherical tooth shaft, and the spherical tooth cap is suitable for being connected with the inner spherical tooth seat to fix the installation ball body in the installation groove.
Further, the first flange is detachably connected with the outer ball gear shaft.
Further, the first flange is splined with the outer ball spline shaft.
Further, the ball-tooth coupling for the screw shaft further comprises a nut, and the nut is suitable for locking the first flange on the outer ball-tooth shaft.
Further, the outer wall of the inner spherical tooth seat is provided with a first circular table, the outer wall of the spherical tooth cap is provided with a second circular table, and the first circular table and the second circular table are suitable for being connected through a threaded piece.
Furthermore, an annular groove is formed in the second spherical circumferential surface, and a sealing ring is installed in the annular groove.
Furthermore, key grooves are formed in the surface of the inner spherical tooth shaft and the surface of the outer spherical tooth shaft, and the key grooves are suitable for being in key connection with the helical blades.
Further, the surface of the outer spherical gear shaft is provided with a first positioning step, and the positioning step is suitable for positioning when the bearing seat is installed.
Further, a second positioning step is arranged on the first flange and the second flange, and the second positioning step is suitable for positioning when the screw shaft is connected.
Furthermore, a first groove is formed in the inner end face, a positioning ball seat is arranged in the first groove, a second groove is formed in the positioning ball seat and matched with the positioning ball, and the depth of the second groove is larger than the radius of the positioning ball.
Compared with the prior art, the ball-tooth coupling for the screw shaft has the following beneficial effects that:
the first flange far away from one end of the installation ball body of the outer spherical tooth shaft is connected with one spiral shaft, the second flange far away from one end of the installation ball body of the outer spherical tooth shaft is connected with the other spiral shaft, so that the connection of the two spiral shafts is realized, the first spherical circumferential surface is connected with the spherical spline of the installation ball body, so that the outer spherical tooth shaft can transmit the torque to the inner spherical tooth shaft or the inner spherical tooth shaft transmits the torque to the outer spherical tooth shaft, and the transmission of the torque between the two spiral shafts is realized. The center department through terminal surface in the back sets up the location ball be used for with installation spheroidal location plane butt, with this guarantee location plane to the interior terminal surface have certain distance, simultaneously, spherical global with installation spheroidal sphere cooperation in order to guarantee that the installation spheroid can not break away from the mounting groove through the second of the spherical cap inner wall after being connected with interior ball tooth seat, simultaneously, the interval between the straight global of through spherical cap inner wall and the outer ball tooth axle outer wall guarantees that outer ball tooth axle can be around the rotatory certain angle of the relative interior ball tooth axle of location ball, thereby make when the installation allow appropriate deviation, the moment of torsion transmissibility after having improved two screwed shafts is connected can be realized.
Drawings
Fig. 1 is a schematic structural view of a ball-and-socket coupling for a screw shaft according to an embodiment of the present invention;
fig. 2 is an enlarged view of a point a in fig. 1.
Description of the labeling:
1-outer-button-shaft, 11-mounting-ball, 111-positioning-plane, 12-first flange, 2-inner-button-shaft, 21-second flange, 22-inner-button-seat, 221-mounting-groove, 2211-inner-end-face, 222-first circular table, 3-positioning-ball, 4-positioning-ball-seat, 5-button-cap, 51-second circular table, 52-second spherical-peripheral-face, 53-flat-peripheral-face, 6-sealing-ring, 7-nut.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1 and 2, a ball-and-socket coupling for a screw shaft according to an embodiment of the present invention includes an outer ball-and-socket shaft 1, an inner ball-and-socket shaft 2, and a ball-and-socket cap 5. One end of the outer ball gear shaft 1 is provided with a mounting ball body 11, one end of the mounting ball body 11, which is far away from the outer ball gear shaft 1, is provided with a positioning plane 111, and the other end of the outer ball gear shaft 1 is provided with a first flange 12; a second flange 21 is coaxially arranged at one end of the inner spherical tooth shaft 2, an inner spherical tooth seat 22 is arranged at the other end of the inner spherical tooth shaft 2, an installation groove 221 is formed in the inner spherical tooth seat 22, the inner wall of the installation groove 221 comprises a first spherical peripheral surface and an inner end surface 2211 which are connected, the first spherical peripheral surface is matched with the spherical surface of the installation ball 11 and is suitable for being connected with the spherical surface of the installation ball through a spline, a positioning ball 3 is arranged at the center of the inner end surface 2211, and the positioning ball 3 is suitable for being abutted to the positioning plane 111; the spherical tooth cap 5 is suitable for being sleeved on the installation sphere 11, the inner wall of the spherical tooth cap 5 comprises a second spherical peripheral surface 52 and a straight peripheral surface 53 which are connected, the second spherical peripheral surface 52 is matched with the spherical surface of the installation sphere 11, the inner diameter of the straight peripheral surface 53 is larger than the diameter of the outer spherical tooth shaft 1, and the spherical tooth cap 5 is suitable for being connected with the inner spherical tooth seat 22 to fix the installation sphere 11 in the installation groove 221.
One end of the outer ball gear shaft 1 is referred to as a front end of the outer ball gear shaft, the other end of the outer ball gear shaft 1 is referred to as a rear end of the outer ball gear shaft, one end of the inner ball gear shaft 2 is referred to as a front end of the inner ball gear shaft 2, and the other end of the inner ball gear shaft 2 is referred to as a rear end of the inner ball gear shaft 2.
The "installation sphere 11" is not a complete sphere, and can be regarded as an entity having two flat surfaces after two pieces of the complete sphere are cut off, the two flat surfaces are parallel, one flat surface is coaxially connected with one end of the outer spherical gear shaft 1, and the other flat surface is the aforementioned "positioning plane 111".
Referring to fig. 1 and fig. 2, the first spherical peripheral surface can be understood as a cylindrical surface, the distance from the cylindrical surface to the axis of the inner spline shaft 2 gradually increases from the front end to the rear end, the first spherical peripheral surface is on the cross section of the plane where the axis of any inner spline shaft 2 is located, the cross section of the first spherical peripheral surface is on a circle (referred to as a first assumed circle), and the distance from the rear end of the first spherical peripheral surface to the axis of the inner spline shaft 2 is the radius of the first assumed circle; similarly, the second spherical peripheral surface 52 can also be understood as a cylindrical surface, the distance from the cylindrical surface to the axis of the outer spline shaft 1 gradually decreases from the front end to the rear end, the cross section of the second spherical peripheral surface 52 on the plane where any one of the axes of the outer spline shaft 1 is located is also on a circle (referred to as a second assumed circle), and the distance from the front end of the second spherical peripheral surface 52 to the axis of the outer spline shaft 1 is the radius of the second assumed circle, where the first assumed circle and the second assumed circle have the same radius. The distance from the front end of the flat peripheral surface 53 to the axis of the outer ball gear shaft 1 is constant from the front end to the rear end, and the distance from the front end of the flat peripheral surface 53 to the axis of the outer ball gear shaft 1 is equal to the distance from the rear end of the second spherical peripheral surface 52 to the axis of the outer ball gear shaft 1.
Here, one screw shaft is connected to the first flange 12 at the end of the outer ball gear shaft 1 far from the mounting ball 11, and the other screw shaft is connected to the second flange 21 at the end of the inner ball gear shaft 2, so that the connection of the two screw shafts is realized, and the outer ball gear shaft 1 can transmit torque to the inner ball gear shaft 2 or the inner ball gear shaft 2 can transmit torque to the outer ball gear shaft 1 through the spherical spline coupling of the first spherical circumferential surface and the mounting ball 11, so that the transmission of torque between the two screw shafts is realized. Through set up the locating ball 3 in the center department of interior terminal surface 2211 and be used for with the locating plane 111 butt of installation spheroid 11, with this guarantee that locating plane 111 has certain distance to interior terminal surface 2211, simultaneously, through the spherical cooperation of the second global 52 of the spherical tooth cap 5 inner wall after being connected with interior spherical tooth seat 22 and the sphere of installation spheroid 11 in order to guarantee that installation spheroid 11 can not break away from mounting groove 221, simultaneously, guarantee through the interval between the straight global 53 of spherical tooth cap 5 inner wall and the outer wall of outer spherical tooth axle 1 that outer spherical tooth axle 1 can be around the relative internal spherical tooth axle 2 certain angle of locating ball 3, thereby make certain machining error and installation error of permission, the moment of torsion transmissibility after two screw axis connections has been improved.
In addition, after the second spherical peripheral surface 52 of the inner wall of the spherical tooth cap 5 is matched with the spherical surface of the mounting sphere 11, the mounting sphere 11 is limited to move along the axial direction of the outer spherical tooth shaft 1, and a large axial force can be borne.
It is understood that the spherical spline coupling of the first spherical peripheral surface with the mounting ball 11 means: the spherical surface of the installation sphere 11 is provided with a plurality of tooth sockets distributed at intervals, the plurality of tooth sockets are distributed around the axis of the outer spherical tooth shaft 1, the first spherical surface is provided with a plurality of teeth matched with the tooth sockets, and spline connection is realized through the matching of the teeth and the tooth sockets, wherein, it can be understood that the length of the teeth on the first spherical surface is less than that of the tooth sockets, so as to ensure that the installation sphere can slightly rotate in the installation groove.
Optionally, the second flange 21, the inner ball spline shaft 2 and the inner ball spline seat 22 are of an integrated structure, so that the structure is stable, the rigidity is higher, and in addition, the production cost is lower.
It is understood that, when the ball-and-socket coupling for a screw shaft of the present embodiment is assembled, it may be: firstly, the installation ball body 11 at one end of the outer spherical tooth shaft 1 is installed in the installation groove 221 in the inner spherical tooth seat 22 until the positioning plane 111 abuts against the positioning ball 3, the spherical surface of the installation ball body 11 is in spline connection with the first spherical peripheral surface of the inner wall of the installation groove 221, and then the spherical tooth cap 5 is sleeved on the installation ball body 11 exposed outside the inner spherical tooth seat 22 and the spherical tooth cap 5 is connected with the inner spherical tooth seat 22.
It will be appreciated that the angle at which the outer ball spline shaft 1 can be deflected can be adjusted by controlling the distance from the outer wall of the outer ball spline shaft 1 produced to the flat peripheral surface 53.
Optionally, the first flange 12 is detachably connected to the external ball gear shaft 1.
Here, in order to facilitate the mounting of the integrated bearing seat on the outer ball spline shaft 1, the first flange 12 and the outer ball spline shaft 1 are then designed as a split structure.
Optionally, the first flange 12 is splined to the external ball spline shaft 1.
Here, the other end of the outer ball gear shaft 1, that is, the circumferential surface of the rear end is provided with a plurality of elongated grooves in the axial direction, and the inner ring of the first flange 12 is provided with a rack that is engaged with the plurality of elongated grooves, thereby realizing spline coupling.
Optionally, the ball and socket coupling for a screw spindle further comprises a nut 7, the nut 7 being adapted to lock the first flange 12 to the outer ball and socket spindle 1.
Here, the end of the elongated slot remote from the rear end of the outer ball spline shaft 1 and the nut 7 cooperate to hold the first flange 12 in place.
And a stop gasket can be arranged between the nut 7 and the first flange 12, so that the fixing effect is better.
Optionally, the outer wall of the inner spherical tooth holder 22 is provided with a first circular truncated cone 222, the outer wall of the spherical tooth cap 5 is provided with a second circular truncated cone 51, and the first circular truncated cone 222 and the second circular truncated cone 51 are suitable for being connected through a screw.
Here, the connection between the inner socket 22 and the button cap 5 is achieved by the first round table 222 and the second round table 51 abutting against each other and then being connected together by a screw, wherein the second round table 51 is preferably configured to be integral with the button cap 5, and the second round table 51 and the inner socket 22 are preferably configured to be integral with each other.
Referring to fig. 1 and 2, optionally, an annular groove is formed at the second spherical peripheral surface 52, and the sealing ring 6 is installed in the annular groove.
Here, by providing the seal ring, dust is prevented from entering the inside of the coupling, and grease inside is prevented from overflowing.
Optionally, the surface of the inner spherical toothed shaft 2 and the surface of the outer spherical toothed shaft 1 are provided with keyways adapted to key-connect with the helical blades.
Optionally, the surface of the outer ball gear shaft 1 is provided with a first positioning step, and the positioning step is suitable for providing positioning for mounting the bearing seat.
Here, the first positioning step may be an annular protrusion provided on the surface of the outer ball gear shaft 1, and the integrated bearing seat may be inserted from the rear end of the outer ball gear shaft 1 until positioning is completed against the first positioning step.
Alternatively, the first flange 12 and the second flange 21 are provided with second positioning steps, and the second positioning steps are suitable for providing positioning when the screw shafts are connected, so that the coupling precision of the screw shafts can be ensured.
The second positioning step can be a boss arranged on the end face of the flange, when the screw shaft is connected, a cavity matched with the boss can be formed in the flange arranged at one end of the screw shaft, and positioning is achieved through the matching of the cavity and the second positioning step.
Optionally, a first groove is formed in the inner end surface 2211, a positioning ball seat 4 is arranged in the first groove, a second groove is formed in the positioning ball seat 4, the second groove is matched with the positioning ball 3, and the depth of the second groove is larger than the radius of the positioning ball 3.
Here, the locating ball 3 is installed in the second groove in a matching manner, so that subsequent replacement is facilitated. Wherein, set the degree of depth of second recess to be greater than the radius of location ball 3, like this, install location ball 3 in the second recess after, can keep the level or the state that inclines down with the one end of interior ball pinion shaft 2, location ball 3 just can not drop from the second recess like this, be convenient for follow-up cooperation with the locating plane 111 of installation spheroid 11.
In the description of the present invention, it is to be understood that the terms "front", "back", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the drawings, the X-axis indicates the front-rear position, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) indicates the front, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) indicates the rear; in the drawings, the Z-axis represents the vertical, i.e., up-down, position, and the positive direction of the Z-axis (i.e., the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; it should also be noted that the foregoing X-axis and Z-axis representations are merely intended to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be oriented, constructed or operated in a particular manner and therefore should not be considered as limiting the utility model.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A ball-tooth coupling for a screw shaft, comprising:
the outer ball gear shaft (1), one end of the outer ball gear shaft (1) is provided with a mounting ball body (11), one end, far away from the outer ball gear shaft (1), of the mounting ball body (11) is provided with a positioning plane (111), and the other end of the outer ball gear shaft (1) is coaxially provided with a first flange (12);
the inner ball tooth shaft (2), a second flange (21) is coaxially arranged at one end of the inner ball tooth shaft (2), an inner ball tooth seat (22) is arranged at the other end of the inner ball tooth shaft (2), a mounting groove (221) is formed in the inner ball tooth seat (22), the inner wall of the mounting groove (221) comprises a first spherical peripheral surface and an inner end surface (2211) which are connected, the first spherical peripheral surface is matched with the spherical surface of the mounting ball body (11), the first spherical peripheral surface is suitable for being connected with the spherical surface of the mounting ball body through a spline, a positioning ball (3) is arranged at the center of the inner end surface (2211), and the positioning ball (3) is suitable for being abutted to the positioning plane (111); and
the spherical tooth cap (5), the spherical tooth cap (5) be suitable for the cover on installation spheroid (11), the inner wall of spherical tooth cap (5) is including the spherical global (52) and the straight global (53) of second of connection, the spherical global (52) of second with the sphere phase-match of installation spheroid (11), the internal diameter of straight global (53) is greater than the diameter of outer ball tooth axle (1), spherical tooth cap (5) be suitable for with interior ball tooth seat (22) are connected in order to be fixed in installation spheroid (11) in mounting groove (221).
2. Ball and socket coupling for a screw spindle according to claim 1, characterised in that said first flange (12) is detachably connected to said outer ball and socket shaft (1).
3. Ball and socket coupling for a screw spindle according to claim 2, characterised in that said first flange (12) is splined to said external ball and socket shaft (1).
4. A ball and socket coupling for a screw spindle according to claim 3, further comprising a nut (7), said nut (7) being adapted to lock said first flange (12) to said outer ball and socket shaft (1).
5. A ball and socket coupling for a screw spindle according to claim 1, wherein said inner ball and socket (22) is provided with a first boss (222) on its outer wall, said ball and socket cap (5) is provided with a second boss (51) on its outer wall, said first boss (222) and said second boss (51) being adapted to be connected by a screw.
6. A spherical tooth coupling for a screw shaft according to claim 1, wherein said second spherical peripheral surface (52) is provided with an annular groove, and said annular groove is provided with a seal ring (6).
7. A ball and socket coupling for a screw spindle according to claim 1, wherein the surface of said inner ball and socket shaft (2) and the surface of said outer ball and socket shaft (1) are keyed, said keyways being adapted to key with the helical blades.
8. Ball and socket coupling for a screw spindle according to claim 1, characterised in that the surface of the outer ball and socket shaft (1) is provided with a first positioning step adapted to provide a positioning for mounting the bearing housing.
9. A ball coupling for a screw spindle according to claim 1, wherein said first flange (12) and said second flange (21) are provided with a second positioning step adapted to provide a positioning for connection to a screw spindle.
10. A ball and socket coupling for a screw shaft according to any one of claims 1 to 9, wherein a first recess is defined in said inner end surface (2211), a positioning ball seat (4) is disposed in said first recess, a second recess is defined in said positioning ball seat (4), said second recess is matched with said positioning ball (3), and the depth of said second recess is greater than the radius of said positioning ball (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120996948.2U CN215567428U (en) | 2021-05-11 | 2021-05-11 | Ball tooth coupling for screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120996948.2U CN215567428U (en) | 2021-05-11 | 2021-05-11 | Ball tooth coupling for screw shaft |
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| Publication Number | Publication Date |
|---|---|
| CN215567428U true CN215567428U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120996948.2U Active CN215567428U (en) | 2021-05-11 | 2021-05-11 | Ball tooth coupling for screw shaft |
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| CN (1) | CN215567428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464578A (en) * | 2021-05-11 | 2021-10-01 | 杭州南泰传动机械有限公司 | Ball tooth coupling for screw shaft |
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2021
- 2021-05-11 CN CN202120996948.2U patent/CN215567428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464578A (en) * | 2021-05-11 | 2021-10-01 | 杭州南泰传动机械有限公司 | Ball tooth coupling for screw shaft |
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